diff --git a/README.md b/README.md index dbeb63bc5e..8e573315c3 100644 --- a/README.md +++ b/README.md @@ -1,95 +1,56 @@ # WordPress in the browser! -See -[the WordPress.org blog post explaining why is this useful and how does it work](https://make.wordpress.org/core/2022/09/23/client-side-webassembly-wordpress-with-no-server/) for more details. The README doc below is short&sweet for now. Also, [explore the early preview on StackBlitz](https://stackblitz.com/edit/wp-plugin-playground). - -![](demo.gif) - - -## Running the demo - -This repository ships with a pre-built demo that you can just run! +WordPress.wasm is a client-side WordPress that runs without a PHP server thanks to the magic of WebAssembly. -1. Clone this repo -2. Run `npm install && npm run dev` -3. Visit http://127.0.0.1:8777/ +[See the live demo!](https://wasm.wordpress.net/wordpress.html) -If you want to build the assembly yourself, follow the instructions below. - -This repo draws inspiration from https://github.com/seanmorris/php-wasm and uses https://github.com/aaemnnosttv/wp-sqlite-db - -## Building the assembly - -The build process is split into automated parts. The scripts below create a docker image with the necessary tools, and build PHP as WebAssembly. - -### Building WASM PHP for the web +![](demo.gif) -```bash -npm run build:php:web -``` -### Building WASM PHP for node.js +Table of contents: -```bash -npm run build:php:node -``` +- [Why is this useful?](#why-is-this-useful) +- [Getting started](#getting-started) +- [Architecture overview](#architecture-overview) -## Building custom WordPress bundle +## Why is this useful? -If you'd like to customize the packaged WordPress installation, update -the build script at `packages/wordpress-wasm/wordpress/prepare-wordpress.sh`. It generates a bundle called `wp.data`. +I'm glad you asked – WordPress.wasm is a big deal! -For example, before the comment "Prepare WordPress static files": +WordPress.wasm can power: -- Download and extract a plugin zip package -- Move it into `wp-content/mu-plugins` -- Add a file that loads the plugin +* Runeditable code examples in your documentation or course +* Plugin and theme demos in a private WordPress instance where the user is already logged in as admin +* Easily switching PHP and WordPress version when testing +* Replaying and fixing the failed CI tests right in the browser -```bash -plugin_file=example-plugin.1.0.0.zip -wget https://downloads.wordpress.org/plugin/$plugin_file -unzip $plugin_file -rm $plugin_file +WordPress.wasm provides a strong foundation for the above use-cases but does not implement them just yet. This project is still in its early days and needs contributors. Become a contributor today and help us make these tools a reality! -mv example-plugin wordpress/wp-content/plugins/ +See +[the WordPress.org blog post](https://make.wordpress.org/core/2022/09/23/client-side-webassembly-wordpress-with-no-server/) to learn about the vision, other use-cases, and the visuals. -echo " wp-content/mu-plugins/index.php -``` +### Getting started -To generate a new bundle, run: +You can run WordPress.wasm as follows: -```bash -npm run build:wp +```js +git clone https://github.com/WordPress/wordpress-wasm +cd wordpress-wasm +npm install +npm run dev ``` -## How does it work? - -This repo uses four magic ingredients to make WordPress work in the browser: - -1. A WordPress configured to use SQLite instead of MySQL. This is possible thanks to https://github.com/aaemnnosttv/wp-sqlite-db. -2. A PHP 8.0 compiled with SQLite3 support into WebAssembly. -3. A PHP + WordPress WebAssembly bundle created using the emscripten toolkit. -4. A service worker that loads the bundle and dispatches the regular HTTP traffic to the in-memory WordPress instance. - -The static files (.js, .css, etc.) are served directly from the host filesystem, not from the WebAssembly bundle. - -The work is *heavily* inspired by https://github.com/seanmorris/php-wasm. - -## Limitations - -The worker applies a series of strange patches to WordPress, it's unclear why they're needed at the moment. - -The site editor does not work at the moment. The block editor does, though. +A browser should open and take you to your very own client-side WordPress at http://127.0.0.1:8777/wordpress.html! -PHP cannot communicate with WordPress.org so the plugin directory etc does not work. +As of today, the best way to play with WordPress.wasm is to directly modify the cloned files – [packages/wordpress-wasm/](./packages/wordpress-wasm) is a good place to start. -The sqlite database lives in the memory and the changes only live as long as the service worker. +Why aren't there any npm packages? This is a new project and didn't get there yet – all the efforts were focused on getting it to work. If you'd like to see public npm packages sooner than later, you are more than welcome to contribute. -## Future work +## Architecture overview -* Fix the workarounds mentioned above -* Remove the static files from the wasm bundle -* Remove unnecessary PHP extensions to lower the bundle size +WordPress.wasm is made of the following building blocks: +* [php-wasm](./packages/php-wasm) – a configurable PHP->WebAssembly build pipeline, convenient JavaScript bindings, and a PHP server implemented in JavaScript. +* [php-wasm-browser](./packages/php-wasm-browser) – tools to run real PHP apps in the browser via `php-wasm`, like a Service Worker implementation or Worker Threads to run the PHP runtime concurrently. +* [wordpress-wasm](./packages/wordpress-wasm) – runs WordPress in the browser using the other two packages. +Consult the linked README.md files in each of these packages to learn more. diff --git a/build-docs.sh b/build-docs.sh new file mode 100644 index 0000000000..c67577b930 --- /dev/null +++ b/build-docs.sh @@ -0,0 +1,8 @@ +#!/bin/bash + +npx docgen packages/php-wasm/src/php.js --output packages/php-wasm/README.md --to-section php.js 1 ↵ +npx docgen packages/php-wasm/src/php-server.js --output packages/php-wasm/README.md --to-section php-server.js +npx docgen packages/php-wasm/src/php-browser.js --output packages/php-wasm/README.md --to-section php-browser.js + +npx docgen packages/php-wasm-browser/src/emscripten-download-monitor.js --output packages/php-wasm-browser/README.md --to-section Utilities --ignore defaul +npx docgen packages/php-wasm-browser/src/worker-thread.js --output packages/php-wasm-browser/README.md --to-section 'Worker Thread API ' --ignore 'loadPHPWithProgress|currentBackend' diff --git a/build/php.js b/build/php.js index fc9d9c3397..29bc71d66b 100644 --- a/build/php.js +++ b/build/php.js @@ -1,6 +1,6 @@ // The number of bytes to download, which is just the size of the `php.wasm` file. // Populated by the Dockerfile. -export const dependenciesTotalSize = 5644199; +export const dependenciesTotalSize = 5644149; // The final php.wasm filename – populated by the Dockerfile. export const dependencyFilename = 'php.wasm'; @@ -9,7 +9,7 @@ export const dependencyFilename = 'php.wasm'; // into an ESM module. // This replaces the Emscripten's MODULARIZE=1 which pollutes the // global namespace and does not play well with import() mechanics. -export default function(Env, PHPLoader) {var Module=typeof PHPLoader!="undefined"?PHPLoader:{};var moduleOverrides=Object.assign({},Module);var arguments_=[];var thisProgram="./this.program";var quit_=(status,toThrow)=>{throw toThrow};var ENVIRONMENT_IS_WEB=Env==="WEB";var ENVIRONMENT_IS_WORKER=Env==="WORKER";var ENVIRONMENT_IS_NODE=Env==="NODE";var scriptDirectory="";function locateFile(path){if(Module["locateFile"]){return Module["locateFile"](path,scriptDirectory)}return scriptDirectory+path}var read_,readAsync,readBinary,setWindowTitle;if(ENVIRONMENT_IS_WEB||ENVIRONMENT_IS_WORKER){if(ENVIRONMENT_IS_WORKER){scriptDirectory=self.location.href}else if(typeof document!="undefined"&&document.currentScript){scriptDirectory=document.currentScript.src}if(scriptDirectory.indexOf("blob:")!==0){scriptDirectory=scriptDirectory.substr(0,scriptDirectory.replace(/[?#].*/,"").lastIndexOf("/")+1)}else{scriptDirectory=""}{read_=url=>{var xhr=new XMLHttpRequest;xhr.open("GET",url,false);xhr.send(null);return xhr.responseText};if(ENVIRONMENT_IS_WORKER){readBinary=url=>{var xhr=new XMLHttpRequest;xhr.open("GET",url,false);xhr.responseType="arraybuffer";xhr.send(null);return new Uint8Array(xhr.response)}}readAsync=(url,onload,onerror)=>{var xhr=new XMLHttpRequest;xhr.open("GET",url,true);xhr.responseType="arraybuffer";xhr.onload=()=>{if(xhr.status==200||xhr.status==0&&xhr.response){onload(xhr.response);return}onerror()};xhr.onerror=onerror;xhr.send(null)}}setWindowTitle=title=>document.title=title}else{}var out=Module["print"]||console.log.bind(console);var err=Module["printErr"]||console.warn.bind(console);Object.assign(Module,moduleOverrides);moduleOverrides=null;if(Module["arguments"])arguments_=Module["arguments"];if(Module["thisProgram"])thisProgram=Module["thisProgram"];if(Module["quit"])quit_=Module["quit"];var wasmBinary;if(Module["wasmBinary"])wasmBinary=Module["wasmBinary"];var noExitRuntime=Module["noExitRuntime"]||true;if(typeof WebAssembly!="object"){abort("no native wasm support detected")}var wasmMemory;var ABORT=false;var EXITSTATUS;function assert(condition,text){if(!condition){abort(text)}}var UTF8Decoder=typeof TextDecoder!="undefined"?new TextDecoder("utf8"):undefined;function UTF8ArrayToString(heapOrArray,idx,maxBytesToRead){var endIdx=idx+maxBytesToRead;var endPtr=idx;while(heapOrArray[endPtr]&&!(endPtr>=endIdx))++endPtr;if(endPtr-idx>16&&heapOrArray.buffer&&UTF8Decoder){return UTF8Decoder.decode(heapOrArray.subarray(idx,endPtr))}var str="";while(idx>10,56320|ch&1023)}}return str}function UTF8ToString(ptr,maxBytesToRead){return ptr?UTF8ArrayToString(HEAPU8,ptr,maxBytesToRead):""}function stringToUTF8Array(str,heap,outIdx,maxBytesToWrite){if(!(maxBytesToWrite>0))return 0;var startIdx=outIdx;var endIdx=outIdx+maxBytesToWrite-1;for(var i=0;i=55296&&u<=57343){var u1=str.charCodeAt(++i);u=65536+((u&1023)<<10)|u1&1023}if(u<=127){if(outIdx>=endIdx)break;heap[outIdx++]=u}else if(u<=2047){if(outIdx+1>=endIdx)break;heap[outIdx++]=192|u>>6;heap[outIdx++]=128|u&63}else if(u<=65535){if(outIdx+2>=endIdx)break;heap[outIdx++]=224|u>>12;heap[outIdx++]=128|u>>6&63;heap[outIdx++]=128|u&63}else{if(outIdx+3>=endIdx)break;heap[outIdx++]=240|u>>18;heap[outIdx++]=128|u>>12&63;heap[outIdx++]=128|u>>6&63;heap[outIdx++]=128|u&63}}heap[outIdx]=0;return outIdx-startIdx}function stringToUTF8(str,outPtr,maxBytesToWrite){return stringToUTF8Array(str,HEAPU8,outPtr,maxBytesToWrite)}function lengthBytesUTF8(str){var len=0;for(var i=0;i=55296&&c<=57343){len+=4;++i}else{len+=3}}return len}var buffer,HEAP8,HEAPU8,HEAP16,HEAPU16,HEAP32,HEAPU32,HEAPF32,HEAPF64;function updateGlobalBufferAndViews(buf){buffer=buf;Module["HEAP8"]=HEAP8=new Int8Array(buf);Module["HEAP16"]=HEAP16=new Int16Array(buf);Module["HEAP32"]=HEAP32=new Int32Array(buf);Module["HEAPU8"]=HEAPU8=new Uint8Array(buf);Module["HEAPU16"]=HEAPU16=new Uint16Array(buf);Module["HEAPU32"]=HEAPU32=new Uint32Array(buf);Module["HEAPF32"]=HEAPF32=new Float32Array(buf);Module["HEAPF64"]=HEAPF64=new Float64Array(buf)}var 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addOnPreRun(cb){__ATPRERUN__.unshift(cb)}function addOnInit(cb){__ATINIT__.unshift(cb)}function addOnPostRun(cb){__ATPOSTRUN__.unshift(cb)}var runDependencies=0;var runDependencyWatcher=null;var dependenciesFulfilled=null;function getUniqueRunDependency(id){return id}function addRunDependency(id){runDependencies++;if(Module["monitorRunDependencies"]){Module["monitorRunDependencies"](runDependencies)}}function removeRunDependency(id){runDependencies--;if(Module["monitorRunDependencies"]){Module["monitorRunDependencies"](runDependencies)}if(runDependencies==0){if(runDependencyWatcher!==null){clearInterval(runDependencyWatcher);runDependencyWatcher=null}if(dependenciesFulfilled){var callback=dependenciesFulfilled;dependenciesFulfilled=null;callback()}}}function abort(what){{if(Module["onAbort"]){Module["onAbort"](what)}}what="Aborted("+what+")";err(what);ABORT=true;EXITSTATUS=1;what+=". Build with -sASSERTIONS for more info.";var e=new WebAssembly.RuntimeError(what);throw e}var dataURIPrefix="data:application/octet-stream;base64,";function isDataURI(filename){return filename.startsWith(dataURIPrefix)}var wasmBinaryFile;wasmBinaryFile="/php.wasm?801ea56ca4ae57c071feb1a88b7d05b9";if(!isDataURI(wasmBinaryFile)){wasmBinaryFile=locateFile(wasmBinaryFile)}function getBinary(file){try{if(file==wasmBinaryFile&&wasmBinary){return new Uint8Array(wasmBinary)}if(readBinary){return readBinary(file)}throw"both async and sync fetching of the wasm failed"}catch(err){abort(err)}}function getBinaryPromise(){if(!wasmBinary&&(ENVIRONMENT_IS_WEB||ENVIRONMENT_IS_WORKER)){if(typeof fetch=="function"){return fetch(wasmBinaryFile,{credentials:"same-origin"}).then(function(response){if(!response["ok"]){throw"failed to load wasm binary file at '"+wasmBinaryFile+"'"}return response["arrayBuffer"]()}).catch(function(){return getBinary(wasmBinaryFile)})}}return Promise.resolve().then(function(){return getBinary(wasmBinaryFile)})}function createWasm(){var info={"a":asmLibraryArg};function receiveInstance(instance,module){var exports=instance.exports;Module["asm"]=exports;wasmMemory=Module["asm"]["Ma"];updateGlobalBufferAndViews(wasmMemory.buffer);wasmTable=Module["asm"]["Ua"];addOnInit(Module["asm"]["Na"]);removeRunDependency("wasm-instantiate")}addRunDependency("wasm-instantiate");function receiveInstantiationResult(result){receiveInstance(result["instance"])}function instantiateArrayBuffer(receiver){return getBinaryPromise().then(function(binary){return WebAssembly.instantiate(binary,info)}).then(function(instance){return instance}).then(receiver,function(reason){err("failed to asynchronously prepare wasm: "+reason);abort(reason)})}function instantiateAsync(){if(!wasmBinary&&typeof WebAssembly.instantiateStreaming=="function"&&!isDataURI(wasmBinaryFile)&&typeof fetch=="function"){return fetch(wasmBinaryFile,{credentials:"same-origin"}).then(function(response){var result=WebAssembly.instantiateStreaming(response,info);return result.then(receiveInstantiationResult,function(reason){err("wasm streaming compile failed: "+reason);err("falling back to ArrayBuffer instantiation");return instantiateArrayBuffer(receiveInstantiationResult)})})}else{return instantiateArrayBuffer(receiveInstantiationResult)}}if(Module["instantiateWasm"]){try{var exports=Module["instantiateWasm"](info,receiveInstance);return exports}catch(e){err("Module.instantiateWasm callback failed with error: "+e);return false}}instantiateAsync();return{}}var tempDouble;var tempI64;function ExitStatus(status){this.name="ExitStatus";this.message="Program terminated with exit("+status+")";this.status=status}function callRuntimeCallbacks(callbacks){while(callbacks.length>0){callbacks.shift()(Module)}}function ___assert_fail(condition,filename,line,func){abort("Assertion failed: "+UTF8ToString(condition)+", at: "+[filename?UTF8ToString(filename):"unknown filename",line,func?UTF8ToString(func):"unknown function"])}var wasmTableMirror=[];function getWasmTableEntry(funcPtr){var func=wasmTableMirror[funcPtr];if(!func){if(funcPtr>=wasmTableMirror.length)wasmTableMirror.length=funcPtr+1;wasmTableMirror[funcPtr]=func=wasmTable.get(funcPtr)}return func}function ___call_sighandler(fp,sig){getWasmTableEntry(fp)(sig)}var PATH={isAbs:path=>path.charAt(0)==="/",splitPath:filename=>{var splitPathRe=/^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;return splitPathRe.exec(filename).slice(1)},normalizeArray:(parts,allowAboveRoot)=>{var up=0;for(var i=parts.length-1;i>=0;i--){var last=parts[i];if(last==="."){parts.splice(i,1)}else if(last===".."){parts.splice(i,1);up++}else if(up){parts.splice(i,1);up--}}if(allowAboveRoot){for(;up;up--){parts.unshift("..")}}return parts},normalize:path=>{var 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numBytesWritten=stringToUTF8Array(stringy,u8array,0,u8array.length);if(dontAddNull)u8array.length=numBytesWritten;return u8array}var TTY={ttys:[],init:function(){},shutdown:function(){},register:function(dev,ops){TTY.ttys[dev]={input:[],output:[],ops:ops};FS.registerDevice(dev,TTY.stream_ops)},stream_ops:{open:function(stream){var tty=TTY.ttys[stream.node.rdev];if(!tty){throw new FS.ErrnoError(43)}stream.tty=tty;stream.seekable=false},close:function(stream){stream.tty.ops.fsync(stream.tty)},fsync:function(stream){stream.tty.ops.fsync(stream.tty)},read:function(stream,buffer,offset,length,pos){if(!stream.tty||!stream.tty.ops.get_char){throw new FS.ErrnoError(60)}var bytesRead=0;for(var 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CAPACITY_DOUBLING_MAX=1024*1024;newCapacity=Math.max(newCapacity,prevCapacity*(prevCapacity>>0);if(prevCapacity!=0)newCapacity=Math.max(newCapacity,256);var oldContents=node.contents;node.contents=new Uint8Array(newCapacity);if(node.usedBytes>0)node.contents.set(oldContents.subarray(0,node.usedBytes),0)},resizeFileStorage:function(node,newSize){if(node.usedBytes==newSize)return;if(newSize==0){node.contents=null;node.usedBytes=0}else{var oldContents=node.contents;node.contents=new Uint8Array(newSize);if(oldContents){node.contents.set(oldContents.subarray(0,Math.min(newSize,node.usedBytes)))}node.usedBytes=newSize}},node_ops:{getattr:function(node){var attr={};attr.dev=FS.isChrdev(node.mode)?node.id:1;attr.ino=node.id;attr.mode=node.mode;attr.nlink=1;attr.uid=0;attr.gid=0;attr.rdev=node.rdev;if(FS.isDir(node.mode)){attr.size=4096}else if(FS.isFile(node.mode)){attr.size=node.usedBytes}else if(FS.isLink(node.mode)){attr.size=node.link.length}else{attr.size=0}attr.atime=new Date(node.timestamp);attr.mtime=new Date(node.timestamp);attr.ctime=new Date(node.timestamp);attr.blksize=4096;attr.blocks=Math.ceil(attr.size/attr.blksize);return attr},setattr:function(node,attr){if(attr.mode!==undefined){node.mode=attr.mode}if(attr.timestamp!==undefined){node.timestamp=attr.timestamp}if(attr.size!==undefined){MEMFS.resizeFileStorage(node,attr.size)}},lookup:function(parent,name){throw FS.genericErrors[44]},mknod:function(parent,name,mode,dev){return MEMFS.createNode(parent,name,mode,dev)},rename:function(old_node,new_dir,new_name){if(FS.isDir(old_node.mode)){var new_node;try{new_node=FS.lookupNode(new_dir,new_name)}catch(e){}if(new_node){for(var i in new_node.contents){throw new FS.ErrnoError(55)}}}delete old_node.parent.contents[old_node.name];old_node.parent.timestamp=Date.now();old_node.name=new_name;new_dir.contents[new_name]=old_node;new_dir.timestamp=old_node.parent.timestamp;old_node.parent=new_dir},unlink:function(parent,name){delete parent.contents[name];parent.timestamp=Date.now()},rmdir:function(parent,name){var node=FS.lookupNode(parent,name);for(var i in node.contents){throw new FS.ErrnoError(55)}delete parent.contents[name];parent.timestamp=Date.now()},readdir:function(node){var entries=[".",".."];for(var key in node.contents){if(!node.contents.hasOwnProperty(key)){continue}entries.push(key)}return entries},symlink:function(parent,newname,oldpath){var node=MEMFS.createNode(parent,newname,511|40960,0);node.link=oldpath;return node},readlink:function(node){if(!FS.isLink(node.mode)){throw new FS.ErrnoError(28)}return node.link}},stream_ops:{read:function(stream,buffer,offset,length,position){var contents=stream.node.contents;if(position>=stream.node.usedBytes)return 0;var size=Math.min(stream.node.usedBytes-position,length);if(size>8&&contents.subarray){buffer.set(contents.subarray(position,position+size),offset)}else{for(var i=0;i0||position+length{assert(arrayBuffer,'Loading data file "'+url+'" failed (no arrayBuffer).');onload(new Uint8Array(arrayBuffer));if(dep)removeRunDependency(dep)},event=>{if(onerror){onerror()}else{throw'Loading data file "'+url+'" failed.'}});if(dep)addRunDependency(dep)}var FS={root:null,mounts:[],devices:{},streams:[],nextInode:1,nameTable:null,currentPath:"/",initialized:false,ignorePermissions:true,ErrnoError:null,genericErrors:{},filesystems:null,syncFSRequests:0,lookupPath:(path,opts={})=>{path=PATH_FS.resolve(FS.cwd(),path);if(!path)return{path:"",node:null};var defaults={follow_mount:true,recurse_count:0};opts=Object.assign(defaults,opts);if(opts.recurse_count>8){throw new FS.ErrnoError(32)}var parts=PATH.normalizeArray(path.split("/").filter(p=>!!p),false);var current=FS.root;var current_path="/";for(var i=0;i40){throw new FS.ErrnoError(32)}}}}return{path:current_path,node:current}},getPath:node=>{var path;while(true){if(FS.isRoot(node)){var mount=node.mount.mountpoint;if(!path)return mount;return mount[mount.length-1]!=="/"?mount+"/"+path:mount+path}path=path?node.name+"/"+path:node.name;node=node.parent}},hashName:(parentid,name)=>{var hash=0;for(var i=0;i>>0)%FS.nameTable.length},hashAddNode:node=>{var hash=FS.hashName(node.parent.id,node.name);node.name_next=FS.nameTable[hash];FS.nameTable[hash]=node},hashRemoveNode:node=>{var hash=FS.hashName(node.parent.id,node.name);if(FS.nameTable[hash]===node){FS.nameTable[hash]=node.name_next}else{var current=FS.nameTable[hash];while(current){if(current.name_next===node){current.name_next=node.name_next;break}current=current.name_next}}},lookupNode:(parent,name)=>{var errCode=FS.mayLookup(parent);if(errCode){throw new FS.ErrnoError(errCode,parent)}var hash=FS.hashName(parent.id,name);for(var node=FS.nameTable[hash];node;node=node.name_next){var nodeName=node.name;if(node.parent.id===parent.id&&nodeName===name){return node}}return FS.lookup(parent,name)},createNode:(parent,name,mode,rdev)=>{var node=new FS.FSNode(parent,name,mode,rdev);FS.hashAddNode(node);return node},destroyNode:node=>{FS.hashRemoveNode(node)},isRoot:node=>{return node===node.parent},isMountpoint:node=>{return!!node.mounted},isFile:mode=>{return(mode&61440)===32768},isDir:mode=>{return(mode&61440)===16384},isLink:mode=>{return(mode&61440)===40960},isChrdev:mode=>{return(mode&61440)===8192},isBlkdev:mode=>{return(mode&61440)===24576},isFIFO:mode=>{return(mode&61440)===4096},isSocket:mode=>{return(mode&49152)===49152},flagModes:{"r":0,"r+":2,"w":577,"w+":578,"a":1089,"a+":1090},modeStringToFlags:str=>{var flags=FS.flagModes[str];if(typeof flags=="undefined"){throw new Error("Unknown file open mode: "+str)}return flags},flagsToPermissionString:flag=>{var perms=["r","w","rw"][flag&3];if(flag&512){perms+="w"}return perms},nodePermissions:(node,perms)=>{if(FS.ignorePermissions){return 0}if(perms.includes("r")&&!(node.mode&292)){return 2}else if(perms.includes("w")&&!(node.mode&146)){return 2}else if(perms.includes("x")&&!(node.mode&73)){return 2}return 0},mayLookup:dir=>{var errCode=FS.nodePermissions(dir,"x");if(errCode)return errCode;if(!dir.node_ops.lookup)return 2;return 0},mayCreate:(dir,name)=>{try{var node=FS.lookupNode(dir,name);return 20}catch(e){}return FS.nodePermissions(dir,"wx")},mayDelete:(dir,name,isdir)=>{var node;try{node=FS.lookupNode(dir,name)}catch(e){return e.errno}var errCode=FS.nodePermissions(dir,"wx");if(errCode){return errCode}if(isdir){if(!FS.isDir(node.mode)){return 54}if(FS.isRoot(node)||FS.getPath(node)===FS.cwd()){return 10}}else{if(FS.isDir(node.mode)){return 31}}return 0},mayOpen:(node,flags)=>{if(!node){return 44}if(FS.isLink(node.mode)){return 32}else if(FS.isDir(node.mode)){if(FS.flagsToPermissionString(flags)!=="r"||flags&512){return 31}}return FS.nodePermissions(node,FS.flagsToPermissionString(flags))},MAX_OPEN_FDS:4096,nextfd:(fd_start=0,fd_end=FS.MAX_OPEN_FDS)=>{for(var fd=fd_start;fd<=fd_end;fd++){if(!FS.streams[fd]){return fd}}throw new FS.ErrnoError(33)},getStream:fd=>FS.streams[fd],createStream:(stream,fd_start,fd_end)=>{if(!FS.FSStream){FS.FSStream=function(){this.shared={}};FS.FSStream.prototype={};Object.defineProperties(FS.FSStream.prototype,{object:{get:function(){return this.node},set:function(val){this.node=val}},isRead:{get:function(){return(this.flags&2097155)!==1}},isWrite:{get:function(){return(this.flags&2097155)!==0}},isAppend:{get:function(){return this.flags&1024}},flags:{get:function(){return this.shared.flags},set:function(val){this.shared.flags=val}},position:{get:function(){return this.shared.position},set:function(val){this.shared.position=val}}})}stream=Object.assign(new FS.FSStream,stream);var fd=FS.nextfd(fd_start,fd_end);stream.fd=fd;FS.streams[fd]=stream;return stream},closeStream:fd=>{FS.streams[fd]=null},chrdev_stream_ops:{open:stream=>{var device=FS.getDevice(stream.node.rdev);stream.stream_ops=device.stream_ops;if(stream.stream_ops.open){stream.stream_ops.open(stream)}},llseek:()=>{throw new FS.ErrnoError(70)}},major:dev=>dev>>8,minor:dev=>dev&255,makedev:(ma,mi)=>ma<<8|mi,registerDevice:(dev,ops)=>{FS.devices[dev]={stream_ops:ops}},getDevice:dev=>FS.devices[dev],getMounts:mount=>{var mounts=[];var check=[mount];while(check.length){var m=check.pop();mounts.push(m);check.push.apply(check,m.mounts)}return mounts},syncfs:(populate,callback)=>{if(typeof populate=="function"){callback=populate;populate=false}FS.syncFSRequests++;if(FS.syncFSRequests>1){err("warning: "+FS.syncFSRequests+" FS.syncfs operations in flight at once, probably just doing extra work")}var mounts=FS.getMounts(FS.root.mount);var completed=0;function doCallback(errCode){FS.syncFSRequests--;return callback(errCode)}function done(errCode){if(errCode){if(!done.errored){done.errored=true;return doCallback(errCode)}return}if(++completed>=mounts.length){doCallback(null)}}mounts.forEach(mount=>{if(!mount.type.syncfs){return done(null)}mount.type.syncfs(mount,populate,done)})},mount:(type,opts,mountpoint)=>{var root=mountpoint==="/";var pseudo=!mountpoint;var node;if(root&&FS.root){throw new FS.ErrnoError(10)}else if(!root&&!pseudo){var lookup=FS.lookupPath(mountpoint,{follow_mount:false});mountpoint=lookup.path;node=lookup.node;if(FS.isMountpoint(node)){throw new FS.ErrnoError(10)}if(!FS.isDir(node.mode)){throw new FS.ErrnoError(54)}}var mount={type:type,opts:opts,mountpoint:mountpoint,mounts:[]};var mountRoot=type.mount(mount);mountRoot.mount=mount;mount.root=mountRoot;if(root){FS.root=mountRoot}else if(node){node.mounted=mount;if(node.mount){node.mount.mounts.push(mount)}}return mountRoot},unmount:mountpoint=>{var lookup=FS.lookupPath(mountpoint,{follow_mount:false});if(!FS.isMountpoint(lookup.node)){throw new FS.ErrnoError(28)}var node=lookup.node;var mount=node.mounted;var mounts=FS.getMounts(mount);Object.keys(FS.nameTable).forEach(hash=>{var current=FS.nameTable[hash];while(current){var next=current.name_next;if(mounts.includes(current.mount)){FS.destroyNode(current)}current=next}});node.mounted=null;var idx=node.mount.mounts.indexOf(mount);node.mount.mounts.splice(idx,1)},lookup:(parent,name)=>{return parent.node_ops.lookup(parent,name)},mknod:(path,mode,dev)=>{var lookup=FS.lookupPath(path,{parent:true});var parent=lookup.node;var name=PATH.basename(path);if(!name||name==="."||name===".."){throw new FS.ErrnoError(28)}var errCode=FS.mayCreate(parent,name);if(errCode){throw new FS.ErrnoError(errCode)}if(!parent.node_ops.mknod){throw new FS.ErrnoError(63)}return parent.node_ops.mknod(parent,name,mode,dev)},create:(path,mode)=>{mode=mode!==undefined?mode:438;mode&=4095;mode|=32768;return FS.mknod(path,mode,0)},mkdir:(path,mode)=>{mode=mode!==undefined?mode:511;mode&=511|512;mode|=16384;return FS.mknod(path,mode,0)},mkdirTree:(path,mode)=>{var dirs=path.split("/");var d="";for(var i=0;i{if(typeof dev=="undefined"){dev=mode;mode=438}mode|=8192;return FS.mknod(path,mode,dev)},symlink:(oldpath,newpath)=>{if(!PATH_FS.resolve(oldpath)){throw new FS.ErrnoError(44)}var lookup=FS.lookupPath(newpath,{parent:true});var parent=lookup.node;if(!parent){throw new FS.ErrnoError(44)}var newname=PATH.basename(newpath);var errCode=FS.mayCreate(parent,newname);if(errCode){throw new FS.ErrnoError(errCode)}if(!parent.node_ops.symlink){throw new FS.ErrnoError(63)}return parent.node_ops.symlink(parent,newname,oldpath)},rename:(old_path,new_path)=>{var old_dirname=PATH.dirname(old_path);var new_dirname=PATH.dirname(new_path);var old_name=PATH.basename(old_path);var new_name=PATH.basename(new_path);var lookup,old_dir,new_dir;lookup=FS.lookupPath(old_path,{parent:true});old_dir=lookup.node;lookup=FS.lookupPath(new_path,{parent:true});new_dir=lookup.node;if(!old_dir||!new_dir)throw new FS.ErrnoError(44);if(old_dir.mount!==new_dir.mount){throw new FS.ErrnoError(75)}var old_node=FS.lookupNode(old_dir,old_name);var relative=PATH_FS.relative(old_path,new_dirname);if(relative.charAt(0)!=="."){throw new FS.ErrnoError(28)}relative=PATH_FS.relative(new_path,old_dirname);if(relative.charAt(0)!=="."){throw new FS.ErrnoError(55)}var new_node;try{new_node=FS.lookupNode(new_dir,new_name)}catch(e){}if(old_node===new_node){return}var isdir=FS.isDir(old_node.mode);var errCode=FS.mayDelete(old_dir,old_name,isdir);if(errCode){throw new FS.ErrnoError(errCode)}errCode=new_node?FS.mayDelete(new_dir,new_name,isdir):FS.mayCreate(new_dir,new_name);if(errCode){throw new FS.ErrnoError(errCode)}if(!old_dir.node_ops.rename){throw new FS.ErrnoError(63)}if(FS.isMountpoint(old_node)||new_node&&FS.isMountpoint(new_node)){throw new FS.ErrnoError(10)}if(new_dir!==old_dir){errCode=FS.nodePermissions(old_dir,"w");if(errCode){throw new FS.ErrnoError(errCode)}}FS.hashRemoveNode(old_node);try{old_dir.node_ops.rename(old_node,new_dir,new_name)}catch(e){throw e}finally{FS.hashAddNode(old_node)}},rmdir:path=>{var lookup=FS.lookupPath(path,{parent:true});var parent=lookup.node;var name=PATH.basename(path);var node=FS.lookupNode(parent,name);var errCode=FS.mayDelete(parent,name,true);if(errCode){throw new FS.ErrnoError(errCode)}if(!parent.node_ops.rmdir){throw new FS.ErrnoError(63)}if(FS.isMountpoint(node)){throw new FS.ErrnoError(10)}parent.node_ops.rmdir(parent,name);FS.destroyNode(node)},readdir:path=>{var lookup=FS.lookupPath(path,{follow:true});var node=lookup.node;if(!node.node_ops.readdir){throw new FS.ErrnoError(54)}return node.node_ops.readdir(node)},unlink:path=>{var lookup=FS.lookupPath(path,{parent:true});var parent=lookup.node;if(!parent){throw new FS.ErrnoError(44)}var name=PATH.basename(path);var node=FS.lookupNode(parent,name);var errCode=FS.mayDelete(parent,name,false);if(errCode){throw new FS.ErrnoError(errCode)}if(!parent.node_ops.unlink){throw new FS.ErrnoError(63)}if(FS.isMountpoint(node)){throw new FS.ErrnoError(10)}parent.node_ops.unlink(parent,name);FS.destroyNode(node)},readlink:path=>{var lookup=FS.lookupPath(path);var link=lookup.node;if(!link){throw new FS.ErrnoError(44)}if(!link.node_ops.readlink){throw new FS.ErrnoError(28)}return PATH_FS.resolve(FS.getPath(link.parent),link.node_ops.readlink(link))},stat:(path,dontFollow)=>{var lookup=FS.lookupPath(path,{follow:!dontFollow});var node=lookup.node;if(!node){throw new FS.ErrnoError(44)}if(!node.node_ops.getattr){throw new FS.ErrnoError(63)}return node.node_ops.getattr(node)},lstat:path=>{return FS.stat(path,true)},chmod:(path,mode,dontFollow)=>{var node;if(typeof path=="string"){var lookup=FS.lookupPath(path,{follow:!dontFollow});node=lookup.node}else{node=path}if(!node.node_ops.setattr){throw new FS.ErrnoError(63)}node.node_ops.setattr(node,{mode:mode&4095|node.mode&~4095,timestamp:Date.now()})},lchmod:(path,mode)=>{FS.chmod(path,mode,true)},fchmod:(fd,mode)=>{var stream=FS.getStream(fd);if(!stream){throw new FS.ErrnoError(8)}FS.chmod(stream.node,mode)},chown:(path,uid,gid,dontFollow)=>{var node;if(typeof path=="string"){var lookup=FS.lookupPath(path,{follow:!dontFollow});node=lookup.node}else{node=path}if(!node.node_ops.setattr){throw new FS.ErrnoError(63)}node.node_ops.setattr(node,{timestamp:Date.now()})},lchown:(path,uid,gid)=>{FS.chown(path,uid,gid,true)},fchown:(fd,uid,gid)=>{var stream=FS.getStream(fd);if(!stream){throw new FS.ErrnoError(8)}FS.chown(stream.node,uid,gid)},truncate:(path,len)=>{if(len<0){throw new FS.ErrnoError(28)}var node;if(typeof path=="string"){var lookup=FS.lookupPath(path,{follow:true});node=lookup.node}else{node=path}if(!node.node_ops.setattr){throw new FS.ErrnoError(63)}if(FS.isDir(node.mode)){throw new FS.ErrnoError(31)}if(!FS.isFile(node.mode)){throw new FS.ErrnoError(28)}var errCode=FS.nodePermissions(node,"w");if(errCode){throw new FS.ErrnoError(errCode)}node.node_ops.setattr(node,{size:len,timestamp:Date.now()})},ftruncate:(fd,len)=>{var stream=FS.getStream(fd);if(!stream){throw new FS.ErrnoError(8)}if((stream.flags&2097155)===0){throw new FS.ErrnoError(28)}FS.truncate(stream.node,len)},utime:(path,atime,mtime)=>{var lookup=FS.lookupPath(path,{follow:true});var node=lookup.node;node.node_ops.setattr(node,{timestamp:Math.max(atime,mtime)})},open:(path,flags,mode)=>{if(path===""){throw new FS.ErrnoError(44)}flags=typeof flags=="string"?FS.modeStringToFlags(flags):flags;mode=typeof mode=="undefined"?438:mode;if(flags&64){mode=mode&4095|32768}else{mode=0}var node;if(typeof path=="object"){node=path}else{path=PATH.normalize(path);try{var lookup=FS.lookupPath(path,{follow:!(flags&131072)});node=lookup.node}catch(e){}}var created=false;if(flags&64){if(node){if(flags&128){throw new FS.ErrnoError(20)}}else{node=FS.mknod(path,mode,0);created=true}}if(!node){throw new FS.ErrnoError(44)}if(FS.isChrdev(node.mode)){flags&=~512}if(flags&65536&&!FS.isDir(node.mode)){throw new FS.ErrnoError(54)}if(!created){var errCode=FS.mayOpen(node,flags);if(errCode){throw new FS.ErrnoError(errCode)}}if(flags&512&&!created){FS.truncate(node,0)}flags&=~(128|512|131072);var stream=FS.createStream({node:node,path:FS.getPath(node),flags:flags,seekable:true,position:0,stream_ops:node.stream_ops,ungotten:[],error:false});if(stream.stream_ops.open){stream.stream_ops.open(stream)}if(Module["logReadFiles"]&&!(flags&1)){if(!FS.readFiles)FS.readFiles={};if(!(path in FS.readFiles)){FS.readFiles[path]=1}}return stream},close:stream=>{if(FS.isClosed(stream)){throw new FS.ErrnoError(8)}if(stream.getdents)stream.getdents=null;try{if(stream.stream_ops.close){stream.stream_ops.close(stream)}}catch(e){throw e}finally{FS.closeStream(stream.fd)}stream.fd=null},isClosed:stream=>{return stream.fd===null},llseek:(stream,offset,whence)=>{if(FS.isClosed(stream)){throw new FS.ErrnoError(8)}if(!stream.seekable||!stream.stream_ops.llseek){throw new FS.ErrnoError(70)}if(whence!=0&&whence!=1&&whence!=2){throw new FS.ErrnoError(28)}stream.position=stream.stream_ops.llseek(stream,offset,whence);stream.ungotten=[];return stream.position},read:(stream,buffer,offset,length,position)=>{if(length<0||position<0){throw new FS.ErrnoError(28)}if(FS.isClosed(stream)){throw new FS.ErrnoError(8)}if((stream.flags&2097155)===1){throw new FS.ErrnoError(8)}if(FS.isDir(stream.node.mode)){throw new FS.ErrnoError(31)}if(!stream.stream_ops.read){throw new FS.ErrnoError(28)}var seeking=typeof position!="undefined";if(!seeking){position=stream.position}else if(!stream.seekable){throw new FS.ErrnoError(70)}var bytesRead=stream.stream_ops.read(stream,buffer,offset,length,position);if(!seeking)stream.position+=bytesRead;return bytesRead},write:(stream,buffer,offset,length,position,canOwn)=>{if(length<0||position<0){throw new FS.ErrnoError(28)}if(FS.isClosed(stream)){throw new FS.ErrnoError(8)}if((stream.flags&2097155)===0){throw new FS.ErrnoError(8)}if(FS.isDir(stream.node.mode)){throw new FS.ErrnoError(31)}if(!stream.stream_ops.write){throw new FS.ErrnoError(28)}if(stream.seekable&&stream.flags&1024){FS.llseek(stream,0,2)}var seeking=typeof position!="undefined";if(!seeking){position=stream.position}else if(!stream.seekable){throw new FS.ErrnoError(70)}var bytesWritten=stream.stream_ops.write(stream,buffer,offset,length,position,canOwn);if(!seeking)stream.position+=bytesWritten;return bytesWritten},allocate:(stream,offset,length)=>{if(FS.isClosed(stream)){throw new FS.ErrnoError(8)}if(offset<0||length<=0){throw new FS.ErrnoError(28)}if((stream.flags&2097155)===0){throw new FS.ErrnoError(8)}if(!FS.isFile(stream.node.mode)&&!FS.isDir(stream.node.mode)){throw new FS.ErrnoError(43)}if(!stream.stream_ops.allocate){throw new FS.ErrnoError(138)}stream.stream_ops.allocate(stream,offset,length)},mmap:(stream,length,position,prot,flags)=>{if((prot&2)!==0&&(flags&2)===0&&(stream.flags&2097155)!==2){throw new FS.ErrnoError(2)}if((stream.flags&2097155)===1){throw new FS.ErrnoError(2)}if(!stream.stream_ops.mmap){throw new FS.ErrnoError(43)}return stream.stream_ops.mmap(stream,length,position,prot,flags)},msync:(stream,buffer,offset,length,mmapFlags)=>{if(!stream.stream_ops.msync){return 0}return stream.stream_ops.msync(stream,buffer,offset,length,mmapFlags)},munmap:stream=>0,ioctl:(stream,cmd,arg)=>{if(!stream.stream_ops.ioctl){throw new FS.ErrnoError(59)}return stream.stream_ops.ioctl(stream,cmd,arg)},readFile:(path,opts={})=>{opts.flags=opts.flags||0;opts.encoding=opts.encoding||"binary";if(opts.encoding!=="utf8"&&opts.encoding!=="binary"){throw new Error('Invalid encoding type "'+opts.encoding+'"')}var ret;var stream=FS.open(path,opts.flags);var stat=FS.stat(path);var length=stat.size;var buf=new Uint8Array(length);FS.read(stream,buf,0,length,0);if(opts.encoding==="utf8"){ret=UTF8ArrayToString(buf,0)}else if(opts.encoding==="binary"){ret=buf}FS.close(stream);return ret},writeFile:(path,data,opts={})=>{opts.flags=opts.flags||577;var stream=FS.open(path,opts.flags,opts.mode);if(typeof data=="string"){var buf=new Uint8Array(lengthBytesUTF8(data)+1);var actualNumBytes=stringToUTF8Array(data,buf,0,buf.length);FS.write(stream,buf,0,actualNumBytes,undefined,opts.canOwn)}else if(ArrayBuffer.isView(data)){FS.write(stream,data,0,data.byteLength,undefined,opts.canOwn)}else{throw new Error("Unsupported data type")}FS.close(stream)},cwd:()=>FS.currentPath,chdir:path=>{var lookup=FS.lookupPath(path,{follow:true});if(lookup.node===null){throw new FS.ErrnoError(44)}if(!FS.isDir(lookup.node.mode)){throw new FS.ErrnoError(54)}var errCode=FS.nodePermissions(lookup.node,"x");if(errCode){throw new FS.ErrnoError(errCode)}FS.currentPath=lookup.path},createDefaultDirectories:()=>{FS.mkdir("/tmp");FS.mkdir("/home");FS.mkdir("/home/web_user")},createDefaultDevices:()=>{FS.mkdir("/dev");FS.registerDevice(FS.makedev(1,3),{read:()=>0,write:(stream,buffer,offset,length,pos)=>length});FS.mkdev("/dev/null",FS.makedev(1,3));TTY.register(FS.makedev(5,0),TTY.default_tty_ops);TTY.register(FS.makedev(6,0),TTY.default_tty1_ops);FS.mkdev("/dev/tty",FS.makedev(5,0));FS.mkdev("/dev/tty1",FS.makedev(6,0));var random_device=getRandomDevice();FS.createDevice("/dev","random",random_device);FS.createDevice("/dev","urandom",random_device);FS.mkdir("/dev/shm");FS.mkdir("/dev/shm/tmp")},createSpecialDirectories:()=>{FS.mkdir("/proc");var proc_self=FS.mkdir("/proc/self");FS.mkdir("/proc/self/fd");FS.mount({mount:()=>{var node=FS.createNode(proc_self,"fd",16384|511,73);node.node_ops={lookup:(parent,name)=>{var fd=+name;var stream=FS.getStream(fd);if(!stream)throw new FS.ErrnoError(8);var ret={parent:null,mount:{mountpoint:"fake"},node_ops:{readlink:()=>stream.path}};ret.parent=ret;return ret}};return node}},{},"/proc/self/fd")},createStandardStreams:()=>{if(Module["stdin"]){FS.createDevice("/dev","stdin",Module["stdin"])}else{FS.symlink("/dev/tty","/dev/stdin")}if(Module["stdout"]){FS.createDevice("/dev","stdout",null,Module["stdout"])}else{FS.symlink("/dev/tty","/dev/stdout")}if(Module["stderr"]){FS.createDevice("/dev","stderr",null,Module["stderr"])}else{FS.symlink("/dev/tty1","/dev/stderr")}var stdin=FS.open("/dev/stdin",0);var stdout=FS.open("/dev/stdout",1);var stderr=FS.open("/dev/stderr",1)},ensureErrnoError:()=>{if(FS.ErrnoError)return;FS.ErrnoError=function ErrnoError(errno,node){this.node=node;this.setErrno=function(errno){this.errno=errno};this.setErrno(errno);this.message="FS error"};FS.ErrnoError.prototype=new Error;FS.ErrnoError.prototype.constructor=FS.ErrnoError;[44].forEach(code=>{FS.genericErrors[code]=new FS.ErrnoError(code);FS.genericErrors[code].stack=""})},staticInit:()=>{FS.ensureErrnoError();FS.nameTable=new Array(4096);FS.mount(MEMFS,{},"/");FS.createDefaultDirectories();FS.createDefaultDevices();FS.createSpecialDirectories();FS.filesystems={"MEMFS":MEMFS}},init:(input,output,error)=>{FS.init.initialized=true;FS.ensureErrnoError();Module["stdin"]=input||Module["stdin"];Module["stdout"]=output||Module["stdout"];Module["stderr"]=error||Module["stderr"];FS.createStandardStreams()},quit:()=>{FS.init.initialized=false;for(var i=0;i{var mode=0;if(canRead)mode|=292|73;if(canWrite)mode|=146;return mode},findObject:(path,dontResolveLastLink)=>{var ret=FS.analyzePath(path,dontResolveLastLink);if(!ret.exists){return null}return ret.object},analyzePath:(path,dontResolveLastLink)=>{try{var lookup=FS.lookupPath(path,{follow:!dontResolveLastLink});path=lookup.path}catch(e){}var ret={isRoot:false,exists:false,error:0,name:null,path:null,object:null,parentExists:false,parentPath:null,parentObject:null};try{var lookup=FS.lookupPath(path,{parent:true});ret.parentExists=true;ret.parentPath=lookup.path;ret.parentObject=lookup.node;ret.name=PATH.basename(path);lookup=FS.lookupPath(path,{follow:!dontResolveLastLink});ret.exists=true;ret.path=lookup.path;ret.object=lookup.node;ret.name=lookup.node.name;ret.isRoot=lookup.path==="/"}catch(e){ret.error=e.errno}return ret},createPath:(parent,path,canRead,canWrite)=>{parent=typeof parent=="string"?parent:FS.getPath(parent);var parts=path.split("/").reverse();while(parts.length){var part=parts.pop();if(!part)continue;var current=PATH.join2(parent,part);try{FS.mkdir(current)}catch(e){}parent=current}return current},createFile:(parent,name,properties,canRead,canWrite)=>{var path=PATH.join2(typeof parent=="string"?parent:FS.getPath(parent),name);var mode=FS.getMode(canRead,canWrite);return FS.create(path,mode)},createDataFile:(parent,name,data,canRead,canWrite,canOwn)=>{var path=name;if(parent){parent=typeof parent=="string"?parent:FS.getPath(parent);path=name?PATH.join2(parent,name):parent}var mode=FS.getMode(canRead,canWrite);var node=FS.create(path,mode);if(data){if(typeof data=="string"){var arr=new Array(data.length);for(var i=0,len=data.length;i{var path=PATH.join2(typeof parent=="string"?parent:FS.getPath(parent),name);var mode=FS.getMode(!!input,!!output);if(!FS.createDevice.major)FS.createDevice.major=64;var dev=FS.makedev(FS.createDevice.major++,0);FS.registerDevice(dev,{open:stream=>{stream.seekable=false},close:stream=>{if(output&&output.buffer&&output.buffer.length){output(10)}},read:(stream,buffer,offset,length,pos)=>{var bytesRead=0;for(var i=0;i{for(var i=0;i{if(obj.isDevice||obj.isFolder||obj.link||obj.contents)return true;if(typeof XMLHttpRequest!="undefined"){throw new Error("Lazy loading should have been performed (contents set) in createLazyFile, but it was not. Lazy loading only works in web workers. Use --embed-file or --preload-file in emcc on the main thread.")}else if(read_){try{obj.contents=intArrayFromString(read_(obj.url),true);obj.usedBytes=obj.contents.length}catch(e){throw new FS.ErrnoError(29)}}else{throw new Error("Cannot load without read() or XMLHttpRequest.")}},createLazyFile:(parent,name,url,canRead,canWrite)=>{function LazyUint8Array(){this.lengthKnown=false;this.chunks=[]}LazyUint8Array.prototype.get=function LazyUint8Array_get(idx){if(idx>this.length-1||idx<0){return undefined}var chunkOffset=idx%this.chunkSize;var chunkNum=idx/this.chunkSize|0;return this.getter(chunkNum)[chunkOffset]};LazyUint8Array.prototype.setDataGetter=function LazyUint8Array_setDataGetter(getter){this.getter=getter};LazyUint8Array.prototype.cacheLength=function LazyUint8Array_cacheLength(){var xhr=new XMLHttpRequest;xhr.open("HEAD",url,false);xhr.send(null);if(!(xhr.status>=200&&xhr.status<300||xhr.status===304))throw new Error("Couldn't load "+url+". Status: "+xhr.status);var datalength=Number(xhr.getResponseHeader("Content-length"));var header;var hasByteServing=(header=xhr.getResponseHeader("Accept-Ranges"))&&header==="bytes";var usesGzip=(header=xhr.getResponseHeader("Content-Encoding"))&&header==="gzip";var chunkSize=1024*1024;if(!hasByteServing)chunkSize=datalength;var doXHR=(from,to)=>{if(from>to)throw new Error("invalid range ("+from+", "+to+") or no bytes requested!");if(to>datalength-1)throw new Error("only "+datalength+" bytes available! programmer error!");var xhr=new XMLHttpRequest;xhr.open("GET",url,false);if(datalength!==chunkSize)xhr.setRequestHeader("Range","bytes="+from+"-"+to);xhr.responseType="arraybuffer";if(xhr.overrideMimeType){xhr.overrideMimeType("text/plain; charset=x-user-defined")}xhr.send(null);if(!(xhr.status>=200&&xhr.status<300||xhr.status===304))throw new Error("Couldn't load "+url+". Status: "+xhr.status);if(xhr.response!==undefined){return new Uint8Array(xhr.response||[])}return intArrayFromString(xhr.responseText||"",true)};var lazyArray=this;lazyArray.setDataGetter(chunkNum=>{var start=chunkNum*chunkSize;var end=(chunkNum+1)*chunkSize-1;end=Math.min(end,datalength-1);if(typeof lazyArray.chunks[chunkNum]=="undefined"){lazyArray.chunks[chunkNum]=doXHR(start,end)}if(typeof lazyArray.chunks[chunkNum]=="undefined")throw new Error("doXHR failed!");return lazyArray.chunks[chunkNum]});if(usesGzip||!datalength){chunkSize=datalength=1;datalength=this.getter(0).length;chunkSize=datalength;out("LazyFiles on gzip forces download of the whole file when length is accessed")}this._length=datalength;this._chunkSize=chunkSize;this.lengthKnown=true};if(typeof XMLHttpRequest!="undefined"){if(!ENVIRONMENT_IS_WORKER)throw"Cannot do synchronous binary XHRs outside webworkers in modern browsers. Use --embed-file or --preload-file in emcc";var lazyArray=new LazyUint8Array;Object.defineProperties(lazyArray,{length:{get:function(){if(!this.lengthKnown){this.cacheLength()}return this._length}},chunkSize:{get:function(){if(!this.lengthKnown){this.cacheLength()}return this._chunkSize}}});var properties={isDevice:false,contents:lazyArray}}else{var properties={isDevice:false,url:url}}var node=FS.createFile(parent,name,properties,canRead,canWrite);if(properties.contents){node.contents=properties.contents}else if(properties.url){node.contents=null;node.url=properties.url}Object.defineProperties(node,{usedBytes:{get:function(){return this.contents.length}}});var stream_ops={};var keys=Object.keys(node.stream_ops);keys.forEach(key=>{var fn=node.stream_ops[key];stream_ops[key]=function forceLoadLazyFile(){FS.forceLoadFile(node);return fn.apply(null,arguments)}});function writeChunks(stream,buffer,offset,length,position){var contents=stream.node.contents;if(position>=contents.length)return 0;var size=Math.min(contents.length-position,length);if(contents.slice){for(var i=0;i{FS.forceLoadFile(node);return writeChunks(stream,buffer,offset,length,position)};stream_ops.mmap=(stream,length,position,prot,flags)=>{FS.forceLoadFile(node);var ptr=mmapAlloc(length);if(!ptr){throw new FS.ErrnoError(48)}writeChunks(stream,HEAP8,ptr,length,position);return{ptr:ptr,allocated:true}};node.stream_ops=stream_ops;return node},createPreloadedFile:(parent,name,url,canRead,canWrite,onload,onerror,dontCreateFile,canOwn,preFinish)=>{var fullname=name?PATH_FS.resolve(PATH.join2(parent,name)):parent;var dep=getUniqueRunDependency("cp "+fullname);function processData(byteArray){function finish(byteArray){if(preFinish)preFinish();if(!dontCreateFile){FS.createDataFile(parent,name,byteArray,canRead,canWrite,canOwn)}if(onload)onload();removeRunDependency(dep)}if(Browser.handledByPreloadPlugin(byteArray,fullname,finish,()=>{if(onerror)onerror();removeRunDependency(dep)})){return}finish(byteArray)}addRunDependency(dep);if(typeof url=="string"){asyncLoad(url,byteArray=>processData(byteArray),onerror)}else{processData(url)}},indexedDB:()=>{return window.indexedDB||window.mozIndexedDB||window.webkitIndexedDB||window.msIndexedDB},DB_NAME:()=>{return"EM_FS_"+window.location.pathname},DB_VERSION:20,DB_STORE_NAME:"FILE_DATA",saveFilesToDB:(paths,onload,onerror)=>{onload=onload||(()=>{});onerror=onerror||(()=>{});var indexedDB=FS.indexedDB();try{var openRequest=indexedDB.open(FS.DB_NAME(),FS.DB_VERSION)}catch(e){return onerror(e)}openRequest.onupgradeneeded=()=>{out("creating db");var db=openRequest.result;db.createObjectStore(FS.DB_STORE_NAME)};openRequest.onsuccess=()=>{var db=openRequest.result;var transaction=db.transaction([FS.DB_STORE_NAME],"readwrite");var files=transaction.objectStore(FS.DB_STORE_NAME);var ok=0,fail=0,total=paths.length;function finish(){if(fail==0)onload();else onerror()}paths.forEach(path=>{var putRequest=files.put(FS.analyzePath(path).object.contents,path);putRequest.onsuccess=()=>{ok++;if(ok+fail==total)finish()};putRequest.onerror=()=>{fail++;if(ok+fail==total)finish()}});transaction.onerror=onerror};openRequest.onerror=onerror},loadFilesFromDB:(paths,onload,onerror)=>{onload=onload||(()=>{});onerror=onerror||(()=>{});var indexedDB=FS.indexedDB();try{var openRequest=indexedDB.open(FS.DB_NAME(),FS.DB_VERSION)}catch(e){return onerror(e)}openRequest.onupgradeneeded=onerror;openRequest.onsuccess=()=>{var db=openRequest.result;try{var transaction=db.transaction([FS.DB_STORE_NAME],"readonly")}catch(e){onerror(e);return}var files=transaction.objectStore(FS.DB_STORE_NAME);var ok=0,fail=0,total=paths.length;function finish(){if(fail==0)onload();else onerror()}paths.forEach(path=>{var getRequest=files.get(path);getRequest.onsuccess=()=>{if(FS.analyzePath(path).exists){FS.unlink(path)}FS.createDataFile(PATH.dirname(path),PATH.basename(path),getRequest.result,true,true,true);ok++;if(ok+fail==total)finish()};getRequest.onerror=()=>{fail++;if(ok+fail==total)finish()}});transaction.onerror=onerror};openRequest.onerror=onerror}};var SYSCALLS={DEFAULT_POLLMASK:5,calculateAt:function(dirfd,path,allowEmpty){if(PATH.isAbs(path)){return path}var dir;if(dirfd===-100){dir=FS.cwd()}else{var dirstream=SYSCALLS.getStreamFromFD(dirfd);dir=dirstream.path}if(path.length==0){if(!allowEmpty){throw new FS.ErrnoError(44)}return dir}return PATH.join2(dir,path)},doStat:function(func,path,buf){try{var stat=func(path)}catch(e){if(e&&e.node&&PATH.normalize(path)!==PATH.normalize(FS.getPath(e.node))){return-54}throw e}HEAP32[buf>>2]=stat.dev;HEAP32[buf+8>>2]=stat.ino;HEAP32[buf+12>>2]=stat.mode;HEAPU32[buf+16>>2]=stat.nlink;HEAP32[buf+20>>2]=stat.uid;HEAP32[buf+24>>2]=stat.gid;HEAP32[buf+28>>2]=stat.rdev;tempI64=[stat.size>>>0,(tempDouble=stat.size,+Math.abs(tempDouble)>=1?tempDouble>0?(Math.min(+Math.floor(tempDouble/4294967296),4294967295)|0)>>>0:~~+Math.ceil((tempDouble-+(~~tempDouble>>>0))/4294967296)>>>0:0)],HEAP32[buf+40>>2]=tempI64[0],HEAP32[buf+44>>2]=tempI64[1];HEAP32[buf+48>>2]=4096;HEAP32[buf+52>>2]=stat.blocks;tempI64=[Math.floor(stat.atime.getTime()/1e3)>>>0,(tempDouble=Math.floor(stat.atime.getTime()/1e3),+Math.abs(tempDouble)>=1?tempDouble>0?(Math.min(+Math.floor(tempDouble/4294967296),4294967295)|0)>>>0:~~+Math.ceil((tempDouble-+(~~tempDouble>>>0))/4294967296)>>>0:0)],HEAP32[buf+56>>2]=tempI64[0],HEAP32[buf+60>>2]=tempI64[1];HEAPU32[buf+64>>2]=0;tempI64=[Math.floor(stat.mtime.getTime()/1e3)>>>0,(tempDouble=Math.floor(stat.mtime.getTime()/1e3),+Math.abs(tempDouble)>=1?tempDouble>0?(Math.min(+Math.floor(tempDouble/4294967296),4294967295)|0)>>>0:~~+Math.ceil((tempDouble-+(~~tempDouble>>>0))/4294967296)>>>0:0)],HEAP32[buf+72>>2]=tempI64[0],HEAP32[buf+76>>2]=tempI64[1];HEAPU32[buf+80>>2]=0;tempI64=[Math.floor(stat.ctime.getTime()/1e3)>>>0,(tempDouble=Math.floor(stat.ctime.getTime()/1e3),+Math.abs(tempDouble)>=1?tempDouble>0?(Math.min(+Math.floor(tempDouble/4294967296),4294967295)|0)>>>0:~~+Math.ceil((tempDouble-+(~~tempDouble>>>0))/4294967296)>>>0:0)],HEAP32[buf+88>>2]=tempI64[0],HEAP32[buf+92>>2]=tempI64[1];HEAPU32[buf+96>>2]=0;tempI64=[stat.ino>>>0,(tempDouble=stat.ino,+Math.abs(tempDouble)>=1?tempDouble>0?(Math.min(+Math.floor(tempDouble/4294967296),4294967295)|0)>>>0:~~+Math.ceil((tempDouble-+(~~tempDouble>>>0))/4294967296)>>>0:0)],HEAP32[buf+104>>2]=tempI64[0],HEAP32[buf+108>>2]=tempI64[1];return 0},doMsync:function(addr,stream,len,flags,offset){if(!FS.isFile(stream.node.mode)){throw new FS.ErrnoError(43)}if(flags&2){return 0}var buffer=HEAPU8.slice(addr,addr+len);FS.msync(stream,buffer,offset,len,flags)},varargs:undefined,get:function(){SYSCALLS.varargs+=4;var ret=HEAP32[SYSCALLS.varargs-4>>2];return ret},getStr:function(ptr){var ret=UTF8ToString(ptr);return ret},getStreamFromFD:function(fd){var stream=FS.getStream(fd);if(!stream)throw new FS.ErrnoError(8);return stream}};function ___syscall__newselect(nfds,readfds,writefds,exceptfds,timeout){try{var total=0;var srcReadLow=readfds?HEAP32[readfds>>2]:0,srcReadHigh=readfds?HEAP32[readfds+4>>2]:0;var srcWriteLow=writefds?HEAP32[writefds>>2]:0,srcWriteHigh=writefds?HEAP32[writefds+4>>2]:0;var srcExceptLow=exceptfds?HEAP32[exceptfds>>2]:0,srcExceptHigh=exceptfds?HEAP32[exceptfds+4>>2]:0;var dstReadLow=0,dstReadHigh=0;var dstWriteLow=0,dstWriteHigh=0;var dstExceptLow=0,dstExceptHigh=0;var allLow=(readfds?HEAP32[readfds>>2]:0)|(writefds?HEAP32[writefds>>2]:0)|(exceptfds?HEAP32[exceptfds>>2]:0);var allHigh=(readfds?HEAP32[readfds+4>>2]:0)|(writefds?HEAP32[writefds+4>>2]:0)|(exceptfds?HEAP32[exceptfds+4>>2]:0);var check=function(fd,low,high,val){return fd<32?low&val:high&val};for(var fd=0;fd>2]=dstReadLow;HEAP32[readfds+4>>2]=dstReadHigh}if(writefds){HEAP32[writefds>>2]=dstWriteLow;HEAP32[writefds+4>>2]=dstWriteHigh}if(exceptfds){HEAP32[exceptfds>>2]=dstExceptLow;HEAP32[exceptfds+4>>2]=dstExceptHigh}return total}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}var SOCKFS={mount:function(mount){Module["websocket"]=Module["websocket"]&&"object"===typeof Module["websocket"]?Module["websocket"]:{};Module["websocket"]._callbacks={};Module["websocket"]["on"]=function(event,callback){if("function"===typeof callback){this._callbacks[event]=callback}return this};Module["websocket"].emit=function(event,param){if("function"===typeof this._callbacks[event]){this._callbacks[event].call(this,param)}};return FS.createNode(null,"/",16384|511,0)},createSocket:function(family,type,protocol){type&=~526336;var streaming=type==1;if(streaming&&protocol&&protocol!=6){throw new FS.ErrnoError(66)}var sock={family:family,type:type,protocol:protocol,server:null,error:null,peers:{},pending:[],recv_queue:[],sock_ops:SOCKFS.websocket_sock_ops};var name=SOCKFS.nextname();var node=FS.createNode(SOCKFS.root,name,49152,0);node.sock=sock;var stream=FS.createStream({path:name,node:node,flags:2,seekable:false,stream_ops:SOCKFS.stream_ops});sock.stream=stream;return sock},getSocket:function(fd){var stream=FS.getStream(fd);if(!stream||!FS.isSocket(stream.node.mode)){return null}return stream.node.sock},stream_ops:{poll:function(stream){var sock=stream.node.sock;return sock.sock_ops.poll(sock)},ioctl:function(stream,request,varargs){var sock=stream.node.sock;return sock.sock_ops.ioctl(sock,request,varargs)},read:function(stream,buffer,offset,length,position){var sock=stream.node.sock;var msg=sock.sock_ops.recvmsg(sock,length);if(!msg){return 0}buffer.set(msg.buffer,offset);return msg.buffer.length},write:function(stream,buffer,offset,length,position){var sock=stream.node.sock;return sock.sock_ops.sendmsg(sock,buffer,offset,length)},close:function(stream){var sock=stream.node.sock;sock.sock_ops.close(sock)}},nextname:function(){if(!SOCKFS.nextname.current){SOCKFS.nextname.current=0}return"socket["+SOCKFS.nextname.current+++"]"},websocket_sock_ops:{createPeer:function(sock,addr,port){var ws;if(typeof addr=="object"){ws=addr;addr=null;port=null}if(ws){if(ws._socket){addr=ws._socket.remoteAddress;port=ws._socket.remotePort}else{var result=/ws[s]?:\/\/([^:]+):(\d+)/.exec(ws.url);if(!result){throw new Error("WebSocket URL must be in the format ws(s)://address:port")}addr=result[1];port=parseInt(result[2],10)}}else{try{var runtimeConfig=Module["websocket"]&&"object"===typeof Module["websocket"];var url="ws:#".replace("#","//");if(runtimeConfig){if("string"===typeof Module["websocket"]["url"]){url=Module["websocket"]["url"]}}if(url==="ws://"||url==="wss://"){var parts=addr.split("/");url=url+parts[0]+":"+port+"/"+parts.slice(1).join("/")}var subProtocols="binary";if(runtimeConfig){if("string"===typeof Module["websocket"]["subprotocol"]){subProtocols=Module["websocket"]["subprotocol"]}}var opts=undefined;if(subProtocols!=="null"){subProtocols=subProtocols.replace(/^ +| +$/g,"").split(/ *, */);opts=subProtocols}if(runtimeConfig&&null===Module["websocket"]["subprotocol"]){subProtocols="null";opts=undefined}var WebSocketConstructor;{WebSocketConstructor=WebSocket}ws=new WebSocketConstructor(url,opts);ws.binaryType="arraybuffer"}catch(e){throw new FS.ErrnoError(23)}}var peer={addr:addr,port:port,socket:ws,dgram_send_queue:[]};SOCKFS.websocket_sock_ops.addPeer(sock,peer);SOCKFS.websocket_sock_ops.handlePeerEvents(sock,peer);if(sock.type===2&&typeof sock.sport!="undefined"){peer.dgram_send_queue.push(new Uint8Array([255,255,255,255,"p".charCodeAt(0),"o".charCodeAt(0),"r".charCodeAt(0),"t".charCodeAt(0),(sock.sport&65280)>>8,sock.sport&255]))}return peer},getPeer:function(sock,addr,port){return sock.peers[addr+":"+port]},addPeer:function(sock,peer){sock.peers[peer.addr+":"+peer.port]=peer},removePeer:function(sock,peer){delete sock.peers[peer.addr+":"+peer.port]},handlePeerEvents:function(sock,peer){var first=true;var handleOpen=function(){Module["websocket"].emit("open",sock.stream.fd);try{var queued=peer.dgram_send_queue.shift();while(queued){peer.socket.send(queued);queued=peer.dgram_send_queue.shift()}}catch(e){peer.socket.close()}};function handleMessage(data){if(typeof data=="string"){var encoder=new TextEncoder;data=encoder.encode(data)}else{assert(data.byteLength!==undefined);if(data.byteLength==0){return}data=new Uint8Array(data)}var wasfirst=first;first=false;if(wasfirst&&data.length===10&&data[0]===255&&data[1]===255&&data[2]===255&&data[3]===255&&data[4]==="p".charCodeAt(0)&&data[5]==="o".charCodeAt(0)&&data[6]==="r".charCodeAt(0)&&data[7]==="t".charCodeAt(0)){var newport=data[8]<<8|data[9];SOCKFS.websocket_sock_ops.removePeer(sock,peer);peer.port=newport;SOCKFS.websocket_sock_ops.addPeer(sock,peer);return}sock.recv_queue.push({addr:peer.addr,port:peer.port,data:data});Module["websocket"].emit("message",sock.stream.fd)}if(ENVIRONMENT_IS_NODE){peer.socket.on("open",handleOpen);peer.socket.on("message",function(data,isBinary){if(!isBinary){return}handleMessage(new Uint8Array(data).buffer)});peer.socket.on("close",function(){Module["websocket"].emit("close",sock.stream.fd)});peer.socket.on("error",function(error){sock.error=14;Module["websocket"].emit("error",[sock.stream.fd,sock.error,"ECONNREFUSED: Connection refused"])})}else{peer.socket.onopen=handleOpen;peer.socket.onclose=function(){Module["websocket"].emit("close",sock.stream.fd)};peer.socket.onmessage=function peer_socket_onmessage(event){handleMessage(event.data)};peer.socket.onerror=function(error){sock.error=14;Module["websocket"].emit("error",[sock.stream.fd,sock.error,"ECONNREFUSED: Connection refused"])}}},poll:function(sock){if(sock.type===1&&sock.server){return sock.pending.length?64|1:0}var mask=0;var dest=sock.type===1?SOCKFS.websocket_sock_ops.getPeer(sock,sock.daddr,sock.dport):null;if(sock.recv_queue.length||!dest||dest&&dest.socket.readyState===dest.socket.CLOSING||dest&&dest.socket.readyState===dest.socket.CLOSED){mask|=64|1}if(!dest||dest&&dest.socket.readyState===dest.socket.OPEN){mask|=4}if(dest&&dest.socket.readyState===dest.socket.CLOSING||dest&&dest.socket.readyState===dest.socket.CLOSED){mask|=16}return mask},ioctl:function(sock,request,arg){switch(request){case 21531:var bytes=0;if(sock.recv_queue.length){bytes=sock.recv_queue[0].data.length}HEAP32[arg>>2]=bytes;return 0;default:return 28}},close:function(sock){if(sock.server){try{sock.server.close()}catch(e){}sock.server=null}var peers=Object.keys(sock.peers);for(var i=0;i>2]=value;return value}function inetPton4(str){var b=str.split(".");for(var i=0;i<4;i++){var tmp=Number(b[i]);if(isNaN(tmp))return null;b[i]=tmp}return(b[0]|b[1]<<8|b[2]<<16|b[3]<<24)>>>0}function jstoi_q(str){return parseInt(str)}function inetPton6(str){var words;var w,offset,z;var valid6regx=/^((?=.*::)(?!.*::.+::)(::)?([\dA-F]{1,4}:(:|\b)|){5}|([\dA-F]{1,4}:){6})((([\dA-F]{1,4}((?!\3)::|:\b|$))|(?!\2\3)){2}|(((2[0-4]|1\d|[1-9])?\d|25[0-5])\.?\b){4})$/i;var parts=[];if(!valid6regx.test(str)){return null}if(str==="::"){return[0,0,0,0,0,0,0,0]}if(str.startsWith("::")){str=str.replace("::","Z:")}else{str=str.replace("::",":Z:")}if(str.indexOf(".")>0){str=str.replace(new RegExp("[.]","g"),":");words=str.split(":");words[words.length-4]=jstoi_q(words[words.length-4])+jstoi_q(words[words.length-3])*256;words[words.length-3]=jstoi_q(words[words.length-2])+jstoi_q(words[words.length-1])*256;words=words.slice(0,words.length-2)}else{words=str.split(":")}offset=0;z=0;for(w=0;w>2]=16}HEAP16[sa>>1]=family;HEAP32[sa+4>>2]=addr;HEAP16[sa+2>>1]=_htons(port);break;case 10:addr=inetPton6(addr);zeroMemory(sa,28);if(addrlen){HEAP32[addrlen>>2]=28}HEAP32[sa>>2]=family;HEAP32[sa+8>>2]=addr[0];HEAP32[sa+12>>2]=addr[1];HEAP32[sa+16>>2]=addr[2];HEAP32[sa+20>>2]=addr[3];HEAP16[sa+2>>1]=_htons(port);break;default:return 5}return 0}var DNS={address_map:{id:1,addrs:{},names:{}},lookup_name:function(name){var res=inetPton4(name);if(res!==null){return name}res=inetPton6(name);if(res!==null){return name}var addr;if(DNS.address_map.addrs[name]){addr=DNS.address_map.addrs[name]}else{var id=DNS.address_map.id++;assert(id<65535,"exceeded max address mappings of 65535");addr="172.29."+(id&255)+"."+(id&65280);DNS.address_map.names[addr]=name;DNS.address_map.addrs[name]=addr}return addr},lookup_addr:function(addr){if(DNS.address_map.names[addr]){return DNS.address_map.names[addr]}return null}};function ___syscall_accept4(fd,addr,addrlen,flags){try{var sock=getSocketFromFD(fd);var newsock=sock.sock_ops.accept(sock);if(addr){var errno=writeSockaddr(addr,newsock.family,DNS.lookup_name(newsock.daddr),newsock.dport,addrlen)}return newsock.stream.fd}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function inetNtop4(addr){return(addr&255)+"."+(addr>>8&255)+"."+(addr>>16&255)+"."+(addr>>24&255)}function inetNtop6(ints){var str="";var word=0;var longest=0;var lastzero=0;var zstart=0;var len=0;var i=0;var parts=[ints[0]&65535,ints[0]>>16,ints[1]&65535,ints[1]>>16,ints[2]&65535,ints[2]>>16,ints[3]&65535,ints[3]>>16];var hasipv4=true;var v4part="";for(i=0;i<5;i++){if(parts[i]!==0){hasipv4=false;break}}if(hasipv4){v4part=inetNtop4(parts[6]|parts[7]<<16);if(parts[5]===-1){str="::ffff:";str+=v4part;return str}if(parts[5]===0){str="::";if(v4part==="0.0.0.0")v4part="";if(v4part==="0.0.0.1")v4part="1";str+=v4part;return str}}for(word=0;word<8;word++){if(parts[word]===0){if(word-lastzero>1){len=0}lastzero=word;len++}if(len>longest){longest=len;zstart=word-longest+1}}for(word=0;word<8;word++){if(longest>1){if(parts[word]===0&&word>=zstart&&word>1];var port=_ntohs(HEAPU16[sa+2>>1]);var addr;switch(family){case 2:if(salen!==16){return{errno:28}}addr=HEAP32[sa+4>>2];addr=inetNtop4(addr);break;case 10:if(salen!==28){return{errno:28}}addr=[HEAP32[sa+8>>2],HEAP32[sa+12>>2],HEAP32[sa+16>>2],HEAP32[sa+20>>2]];addr=inetNtop6(addr);break;default:return{errno:5}}return{family:family,addr:addr,port:port}}function getSocketAddress(addrp,addrlen,allowNull){if(allowNull&&addrp===0)return null;var info=readSockaddr(addrp,addrlen);if(info.errno)throw new FS.ErrnoError(info.errno);info.addr=DNS.lookup_addr(info.addr)||info.addr;return info}function ___syscall_bind(fd,addr,addrlen){try{var sock=getSocketFromFD(fd);var info=getSocketAddress(addr,addrlen);sock.sock_ops.bind(sock,info.addr,info.port);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_chdir(path){try{path=SYSCALLS.getStr(path);FS.chdir(path);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_chmod(path,mode){try{path=SYSCALLS.getStr(path);FS.chmod(path,mode);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_connect(fd,addr,addrlen){try{var sock=getSocketFromFD(fd);var info=getSocketAddress(addr,addrlen);sock.sock_ops.connect(sock,info.addr,info.port);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_dup(fd){try{var old=SYSCALLS.getStreamFromFD(fd);return FS.createStream(old,0).fd}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_faccessat(dirfd,path,amode,flags){try{path=SYSCALLS.getStr(path);path=SYSCALLS.calculateAt(dirfd,path);if(amode&~7){return-28}var lookup=FS.lookupPath(path,{follow:true});var node=lookup.node;if(!node){return-44}var perms="";if(amode&4)perms+="r";if(amode&2)perms+="w";if(amode&1)perms+="x";if(perms&&FS.nodePermissions(node,perms)){return-2}return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_fchmod(fd,mode){try{FS.fchmod(fd,mode);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_fchown32(fd,owner,group){try{FS.fchown(fd,owner,group);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_fchownat(dirfd,path,owner,group,flags){try{path=SYSCALLS.getStr(path);var nofollow=flags&256;flags=flags&~256;path=SYSCALLS.calculateAt(dirfd,path);(nofollow?FS.lchown:FS.chown)(path,owner,group);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_fcntl64(fd,cmd,varargs){SYSCALLS.varargs=varargs;try{var stream=SYSCALLS.getStreamFromFD(fd);switch(cmd){case 0:{var arg=SYSCALLS.get();if(arg<0){return-28}var newStream;newStream=FS.createStream(stream,arg);return newStream.fd}case 1:case 2:return 0;case 3:return stream.flags;case 4:{var arg=SYSCALLS.get();stream.flags|=arg;return 0}case 5:{var arg=SYSCALLS.get();var offset=0;HEAP16[arg+offset>>1]=2;return 0}case 6:case 7:return 0;case 16:case 8:return-28;case 9:setErrNo(28);return-1;default:{return-28}}}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_fstat64(fd,buf){try{var stream=SYSCALLS.getStreamFromFD(fd);return SYSCALLS.doStat(FS.stat,stream.path,buf)}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function convertI32PairToI53Checked(lo,hi){return hi+2097152>>>0<4194305-!!lo?(lo>>>0)+hi*4294967296:NaN}function ___syscall_ftruncate64(fd,length_low,length_high){try{var length=convertI32PairToI53Checked(length_low,length_high);if(isNaN(length))return-61;FS.ftruncate(fd,length);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_getcwd(buf,size){try{if(size===0)return-28;var cwd=FS.cwd();var cwdLengthInBytes=lengthBytesUTF8(cwd)+1;if(size>>0,(tempDouble=id,+Math.abs(tempDouble)>=1?tempDouble>0?(Math.min(+Math.floor(tempDouble/4294967296),4294967295)|0)>>>0:~~+Math.ceil((tempDouble-+(~~tempDouble>>>0))/4294967296)>>>0:0)],HEAP32[dirp+pos>>2]=tempI64[0],HEAP32[dirp+pos+4>>2]=tempI64[1];tempI64=[(idx+1)*struct_size>>>0,(tempDouble=(idx+1)*struct_size,+Math.abs(tempDouble)>=1?tempDouble>0?(Math.min(+Math.floor(tempDouble/4294967296),4294967295)|0)>>>0:~~+Math.ceil((tempDouble-+(~~tempDouble>>>0))/4294967296)>>>0:0)],HEAP32[dirp+pos+8>>2]=tempI64[0],HEAP32[dirp+pos+12>>2]=tempI64[1];HEAP16[dirp+pos+16>>1]=280;HEAP8[dirp+pos+18>>0]=type;stringToUTF8(name,dirp+pos+19,256);pos+=struct_size;idx+=1}FS.llseek(stream,idx*struct_size,0);return pos}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_getpeername(fd,addr,addrlen){try{var sock=getSocketFromFD(fd);if(!sock.daddr){return-53}var errno=writeSockaddr(addr,sock.family,DNS.lookup_name(sock.daddr),sock.dport,addrlen);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_getsockname(fd,addr,addrlen){try{err("__syscall_getsockname "+fd);var sock=getSocketFromFD(fd);var errno=writeSockaddr(addr,sock.family,DNS.lookup_name(sock.saddr||"0.0.0.0"),sock.sport,addrlen);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_getsockopt(fd,level,optname,optval,optlen){try{var sock=getSocketFromFD(fd);if(level===1){if(optname===4){HEAP32[optval>>2]=sock.error;HEAP32[optlen>>2]=4;sock.error=null;return 0}}return-50}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_ioctl(fd,op,varargs){SYSCALLS.varargs=varargs;try{var stream=SYSCALLS.getStreamFromFD(fd);switch(op){case 21509:case 21505:{if(!stream.tty)return-59;return 0}case 21510:case 21511:case 21512:case 21506:case 21507:case 21508:{if(!stream.tty)return-59;return 0}case 21519:{if(!stream.tty)return-59;var argp=SYSCALLS.get();HEAP32[argp>>2]=0;return 0}case 21520:{if(!stream.tty)return-59;return-28}case 21531:{var argp=SYSCALLS.get();return FS.ioctl(stream,op,argp)}case 21523:{if(!stream.tty)return-59;return 0}case 21524:{if(!stream.tty)return-59;return 0}default:return-28}}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_listen(fd,backlog){try{var sock=getSocketFromFD(fd);sock.sock_ops.listen(sock,backlog);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_lstat64(path,buf){try{path=SYSCALLS.getStr(path);return SYSCALLS.doStat(FS.lstat,path,buf)}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_mkdirat(dirfd,path,mode){try{path=SYSCALLS.getStr(path);path=SYSCALLS.calculateAt(dirfd,path);path=PATH.normalize(path);if(path[path.length-1]==="/")path=path.substr(0,path.length-1);FS.mkdir(path,mode,0);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_newfstatat(dirfd,path,buf,flags){try{path=SYSCALLS.getStr(path);var nofollow=flags&256;var allowEmpty=flags&4096;flags=flags&~4352;path=SYSCALLS.calculateAt(dirfd,path,allowEmpty);return SYSCALLS.doStat(nofollow?FS.lstat:FS.stat,path,buf)}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_openat(dirfd,path,flags,varargs){SYSCALLS.varargs=varargs;try{path=SYSCALLS.getStr(path);path=SYSCALLS.calculateAt(dirfd,path);var mode=varargs?SYSCALLS.get():0;return FS.open(path,flags,mode).fd}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}var PIPEFS={BUCKET_BUFFER_SIZE:8192,mount:function(mount){return FS.createNode(null,"/",16384|511,0)},createPipe:function(){var pipe={buckets:[],refcnt:2};pipe.buckets.push({buffer:new Uint8Array(PIPEFS.BUCKET_BUFFER_SIZE),offset:0,roffset:0});var rName=PIPEFS.nextname();var wName=PIPEFS.nextname();var rNode=FS.createNode(PIPEFS.root,rName,4096,0);var wNode=FS.createNode(PIPEFS.root,wName,4096,0);rNode.pipe=pipe;wNode.pipe=pipe;var readableStream=FS.createStream({path:rName,node:rNode,flags:0,seekable:false,stream_ops:PIPEFS.stream_ops});rNode.stream=readableStream;var writableStream=FS.createStream({path:wName,node:wNode,flags:1,seekable:false,stream_ops:PIPEFS.stream_ops});wNode.stream=writableStream;return{readable_fd:readableStream.fd,writable_fd:writableStream.fd}},stream_ops:{poll:function(stream){var pipe=stream.node.pipe;if((stream.flags&2097155)===1){return 256|4}if(pipe.buckets.length>0){for(var i=0;i0){return 64|1}}}return 0},ioctl:function(stream,request,varargs){return 28},fsync:function(stream){return 28},read:function(stream,buffer,offset,length,position){var pipe=stream.node.pipe;var currentLength=0;for(var i=0;i=dataLen){currBucket.buffer.set(data,currBucket.offset);currBucket.offset+=dataLen;return dataLen}else if(freeBytesInCurrBuffer>0){currBucket.buffer.set(data.subarray(0,freeBytesInCurrBuffer),currBucket.offset);currBucket.offset+=freeBytesInCurrBuffer;data=data.subarray(freeBytesInCurrBuffer,data.byteLength)}var numBuckets=data.byteLength/PIPEFS.BUCKET_BUFFER_SIZE|0;var remElements=data.byteLength%PIPEFS.BUCKET_BUFFER_SIZE;for(var i=0;i0){var newBucket={buffer:new Uint8Array(PIPEFS.BUCKET_BUFFER_SIZE),offset:data.byteLength,roffset:0};pipe.buckets.push(newBucket);newBucket.buffer.set(data)}return dataLen},close:function(stream){var pipe=stream.node.pipe;pipe.refcnt--;if(pipe.refcnt===0){pipe.buckets=null}}},nextname:function(){if(!PIPEFS.nextname.current){PIPEFS.nextname.current=0}return"pipe["+PIPEFS.nextname.current+++"]"}};function ___syscall_pipe(fdPtr){try{if(fdPtr==0){throw new FS.ErrnoError(21)}var res=PIPEFS.createPipe();HEAP32[fdPtr>>2]=res.readable_fd;HEAP32[fdPtr+4>>2]=res.writable_fd;return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_poll(fds,nfds,timeout){try{var nonzero=0;for(var i=0;i>2];var events=HEAP16[pollfd+4>>1];var mask=32;var stream=FS.getStream(fd);if(stream){mask=SYSCALLS.DEFAULT_POLLMASK;if(stream.stream_ops.poll){mask=stream.stream_ops.poll(stream)}}mask&=events|8|16;if(mask)nonzero++;HEAP16[pollfd+6>>1]=mask}return nonzero}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_readlinkat(dirfd,path,buf,bufsize){try{path=SYSCALLS.getStr(path);path=SYSCALLS.calculateAt(dirfd,path);if(bufsize<=0)return-28;var ret=FS.readlink(path);var len=Math.min(bufsize,lengthBytesUTF8(ret));var endChar=HEAP8[buf+len];stringToUTF8(ret,buf,bufsize+1);HEAP8[buf+len]=endChar;return len}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_recvfrom(fd,buf,len,flags,addr,addrlen){try{var sock=getSocketFromFD(fd);var msg=sock.sock_ops.recvmsg(sock,len);if(!msg)return 0;if(addr){var errno=writeSockaddr(addr,sock.family,DNS.lookup_name(msg.addr),msg.port,addrlen)}HEAPU8.set(msg.buffer,buf);return msg.buffer.byteLength}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_renameat(olddirfd,oldpath,newdirfd,newpath){try{oldpath=SYSCALLS.getStr(oldpath);newpath=SYSCALLS.getStr(newpath);oldpath=SYSCALLS.calculateAt(olddirfd,oldpath);newpath=SYSCALLS.calculateAt(newdirfd,newpath);FS.rename(oldpath,newpath);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_rmdir(path){try{path=SYSCALLS.getStr(path);FS.rmdir(path);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_sendto(fd,message,length,flags,addr,addr_len){try{var sock=getSocketFromFD(fd);var dest=getSocketAddress(addr,addr_len,true);if(!dest){return FS.write(sock.stream,HEAP8,message,length)}return sock.sock_ops.sendmsg(sock,HEAP8,message,length,dest.addr,dest.port)}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_socket(domain,type,protocol){try{var sock=SOCKFS.createSocket(domain,type,protocol);return sock.stream.fd}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_stat64(path,buf){try{path=SYSCALLS.getStr(path);return SYSCALLS.doStat(FS.stat,path,buf)}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_statfs64(path,size,buf){try{path=SYSCALLS.getStr(path);HEAP32[buf+4>>2]=4096;HEAP32[buf+40>>2]=4096;HEAP32[buf+8>>2]=1e6;HEAP32[buf+12>>2]=5e5;HEAP32[buf+16>>2]=5e5;HEAP32[buf+20>>2]=FS.nextInode;HEAP32[buf+24>>2]=1e6;HEAP32[buf+28>>2]=42;HEAP32[buf+44>>2]=2;HEAP32[buf+36>>2]=255;return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_symlink(target,linkpath){try{target=SYSCALLS.getStr(target);linkpath=SYSCALLS.getStr(linkpath);FS.symlink(target,linkpath);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_unlinkat(dirfd,path,flags){try{path=SYSCALLS.getStr(path);path=SYSCALLS.calculateAt(dirfd,path);if(flags===0){FS.unlink(path)}else if(flags===512){FS.rmdir(path)}else{abort("Invalid flags passed to unlinkat")}return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function readI53FromI64(ptr){return HEAPU32[ptr>>2]+HEAP32[ptr+4>>2]*4294967296}function ___syscall_utimensat(dirfd,path,times,flags){try{path=SYSCALLS.getStr(path);path=SYSCALLS.calculateAt(dirfd,path,true);if(!times){var atime=Date.now();var mtime=atime}else{var seconds=readI53FromI64(times);var nanoseconds=HEAP32[times+8>>2];atime=seconds*1e3+nanoseconds/(1e3*1e3);times+=16;seconds=readI53FromI64(times);nanoseconds=HEAP32[times+8>>2];mtime=seconds*1e3+nanoseconds/(1e3*1e3)}FS.utime(path,atime,mtime);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function __dlinit(main_dso_handle){}var dlopenMissingError="To use dlopen, you need enable dynamic linking, see https://github.com/emscripten-core/emscripten/wiki/Linking";function __dlopen_js(filename,flag){abort(dlopenMissingError)}function __dlsym_js(handle,symbol){abort(dlopenMissingError)}var nowIsMonotonic=true;function __emscripten_get_now_is_monotonic(){return nowIsMonotonic}function __emscripten_throw_longjmp(){throw Infinity}function __gmtime_js(time,tmPtr){var date=new Date(readI53FromI64(time)*1e3);HEAP32[tmPtr>>2]=date.getUTCSeconds();HEAP32[tmPtr+4>>2]=date.getUTCMinutes();HEAP32[tmPtr+8>>2]=date.getUTCHours();HEAP32[tmPtr+12>>2]=date.getUTCDate();HEAP32[tmPtr+16>>2]=date.getUTCMonth();HEAP32[tmPtr+20>>2]=date.getUTCFullYear()-1900;HEAP32[tmPtr+24>>2]=date.getUTCDay();var start=Date.UTC(date.getUTCFullYear(),0,1,0,0,0,0);var yday=(date.getTime()-start)/(1e3*60*60*24)|0;HEAP32[tmPtr+28>>2]=yday}function __localtime_js(time,tmPtr){var date=new Date(readI53FromI64(time)*1e3);HEAP32[tmPtr>>2]=date.getSeconds();HEAP32[tmPtr+4>>2]=date.getMinutes();HEAP32[tmPtr+8>>2]=date.getHours();HEAP32[tmPtr+12>>2]=date.getDate();HEAP32[tmPtr+16>>2]=date.getMonth();HEAP32[tmPtr+20>>2]=date.getFullYear()-1900;HEAP32[tmPtr+24>>2]=date.getDay();var start=new Date(date.getFullYear(),0,1);var yday=(date.getTime()-start.getTime())/(1e3*60*60*24)|0;HEAP32[tmPtr+28>>2]=yday;HEAP32[tmPtr+36>>2]=-(date.getTimezoneOffset()*60);var summerOffset=new Date(date.getFullYear(),6,1).getTimezoneOffset();var winterOffset=start.getTimezoneOffset();var dst=(summerOffset!=winterOffset&&date.getTimezoneOffset()==Math.min(winterOffset,summerOffset))|0;HEAP32[tmPtr+32>>2]=dst}function __mktime_js(tmPtr){var date=new Date(HEAP32[tmPtr+20>>2]+1900,HEAP32[tmPtr+16>>2],HEAP32[tmPtr+12>>2],HEAP32[tmPtr+8>>2],HEAP32[tmPtr+4>>2],HEAP32[tmPtr>>2],0);var dst=HEAP32[tmPtr+32>>2];var guessedOffset=date.getTimezoneOffset();var start=new Date(date.getFullYear(),0,1);var summerOffset=new Date(date.getFullYear(),6,1).getTimezoneOffset();var winterOffset=start.getTimezoneOffset();var dstOffset=Math.min(winterOffset,summerOffset);if(dst<0){HEAP32[tmPtr+32>>2]=Number(summerOffset!=winterOffset&&dstOffset==guessedOffset)}else if(dst>0!=(dstOffset==guessedOffset)){var nonDstOffset=Math.max(winterOffset,summerOffset);var trueOffset=dst>0?dstOffset:nonDstOffset;date.setTime(date.getTime()+(trueOffset-guessedOffset)*6e4)}HEAP32[tmPtr+24>>2]=date.getDay();var yday=(date.getTime()-start.getTime())/(1e3*60*60*24)|0;HEAP32[tmPtr+28>>2]=yday;HEAP32[tmPtr>>2]=date.getSeconds();HEAP32[tmPtr+4>>2]=date.getMinutes();HEAP32[tmPtr+8>>2]=date.getHours();HEAP32[tmPtr+12>>2]=date.getDate();HEAP32[tmPtr+16>>2]=date.getMonth();HEAP32[tmPtr+20>>2]=date.getYear();return date.getTime()/1e3|0}function __mmap_js(len,prot,flags,fd,off,allocated,addr){try{var stream=SYSCALLS.getStreamFromFD(fd);var res=FS.mmap(stream,len,off,prot,flags);var ptr=res.ptr;HEAP32[allocated>>2]=res.allocated;HEAPU32[addr>>2]=ptr;return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function __munmap_js(addr,len,prot,flags,fd,offset){try{var stream=SYSCALLS.getStreamFromFD(fd);if(prot&2){SYSCALLS.doMsync(addr,stream,len,flags,offset)}FS.munmap(stream)}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function allocateUTF8(str){var size=lengthBytesUTF8(str)+1;var ret=_malloc(size);if(ret)stringToUTF8Array(str,HEAP8,ret,size);return ret}function _tzset_impl(timezone,daylight,tzname){var currentYear=(new Date).getFullYear();var winter=new Date(currentYear,0,1);var summer=new Date(currentYear,6,1);var winterOffset=winter.getTimezoneOffset();var summerOffset=summer.getTimezoneOffset();var stdTimezoneOffset=Math.max(winterOffset,summerOffset);HEAP32[timezone>>2]=stdTimezoneOffset*60;HEAP32[daylight>>2]=Number(winterOffset!=summerOffset);function extractZone(date){var match=date.toTimeString().match(/\(([A-Za-z ]+)\)$/);return match?match[1]:"GMT"}var winterName=extractZone(winter);var summerName=extractZone(summer);var winterNamePtr=allocateUTF8(winterName);var summerNamePtr=allocateUTF8(summerName);if(summerOffset>2]=winterNamePtr;HEAPU32[tzname+4>>2]=summerNamePtr}else{HEAPU32[tzname>>2]=summerNamePtr;HEAPU32[tzname+4>>2]=winterNamePtr}}function __tzset_js(timezone,daylight,tzname){if(__tzset_js.called)return;__tzset_js.called=true;_tzset_impl(timezone,daylight,tzname)}function _abort(){abort("")}function _emscripten_date_now(){return Date.now()}function getHeapMax(){return 2147483648}function _emscripten_get_heap_max(){return getHeapMax()}var _emscripten_get_now;_emscripten_get_now=()=>performance.now();function _emscripten_memcpy_big(dest,src,num){HEAPU8.copyWithin(dest,src,src+num)}function emscripten_realloc_buffer(size){try{wasmMemory.grow(size-buffer.byteLength+65535>>>16);updateGlobalBufferAndViews(wasmMemory.buffer);return 1}catch(e){}}function _emscripten_resize_heap(requestedSize){var oldSize=HEAPU8.length;requestedSize=requestedSize>>>0;var maxHeapSize=getHeapMax();if(requestedSize>maxHeapSize){return false}let alignUp=(x,multiple)=>x+(multiple-x%multiple)%multiple;for(var cutDown=1;cutDown<=4;cutDown*=2){var overGrownHeapSize=oldSize*(1+.2/cutDown);overGrownHeapSize=Math.min(overGrownHeapSize,requestedSize+100663296);var newSize=Math.min(maxHeapSize,alignUp(Math.max(requestedSize,overGrownHeapSize),65536));var replacement=emscripten_realloc_buffer(newSize);if(replacement){return true}}return false}var ENV={};function getExecutableName(){return thisProgram||"./this.program"}function getEnvStrings(){if(!getEnvStrings.strings){var lang=(typeof navigator=="object"&&navigator.languages&&navigator.languages[0]||"C").replace("-","_")+".UTF-8";var env={"USER":"web_user","LOGNAME":"web_user","PATH":"/","PWD":"/","HOME":"/home/web_user","LANG":lang,"_":getExecutableName()};for(var x in ENV){if(ENV[x]===undefined)delete env[x];else env[x]=ENV[x]}var strings=[];for(var x in env){strings.push(x+"="+env[x])}getEnvStrings.strings=strings}return getEnvStrings.strings}function writeAsciiToMemory(str,buffer,dontAddNull){for(var i=0;i>0]=str.charCodeAt(i)}if(!dontAddNull)HEAP8[buffer>>0]=0}function _environ_get(__environ,environ_buf){var bufSize=0;getEnvStrings().forEach(function(string,i){var ptr=environ_buf+bufSize;HEAPU32[__environ+i*4>>2]=ptr;writeAsciiToMemory(string,ptr);bufSize+=string.length+1});return 0}function _environ_sizes_get(penviron_count,penviron_buf_size){var strings=getEnvStrings();HEAPU32[penviron_count>>2]=strings.length;var bufSize=0;strings.forEach(function(string){bufSize+=string.length+1});HEAPU32[penviron_buf_size>>2]=bufSize;return 0}function _proc_exit(code){EXITSTATUS=code;if(!keepRuntimeAlive()){if(Module["onExit"])Module["onExit"](code);ABORT=true}quit_(code,new ExitStatus(code))}function exitJS(status,implicit){EXITSTATUS=status;_proc_exit(status)}var _exit=exitJS;function _fd_close(fd){try{var stream=SYSCALLS.getStreamFromFD(fd);FS.close(stream);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return e.errno}}function _fd_fdstat_get(fd,pbuf){try{var stream=SYSCALLS.getStreamFromFD(fd);var type=stream.tty?2:FS.isDir(stream.mode)?3:FS.isLink(stream.mode)?7:4;HEAP8[pbuf>>0]=type;return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return e.errno}}function doReadv(stream,iov,iovcnt,offset){var ret=0;for(var i=0;i>2];var len=HEAPU32[iov+4>>2];iov+=8;var curr=FS.read(stream,HEAP8,ptr,len,offset);if(curr<0)return-1;ret+=curr;if(curr>2]=num;return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return e.errno}}function _fd_seek(fd,offset_low,offset_high,whence,newOffset){try{var offset=convertI32PairToI53Checked(offset_low,offset_high);if(isNaN(offset))return 61;var stream=SYSCALLS.getStreamFromFD(fd);FS.llseek(stream,offset,whence);tempI64=[stream.position>>>0,(tempDouble=stream.position,+Math.abs(tempDouble)>=1?tempDouble>0?(Math.min(+Math.floor(tempDouble/4294967296),4294967295)|0)>>>0:~~+Math.ceil((tempDouble-+(~~tempDouble>>>0))/4294967296)>>>0:0)],HEAP32[newOffset>>2]=tempI64[0],HEAP32[newOffset+4>>2]=tempI64[1];if(stream.getdents&&offset===0&&whence===0)stream.getdents=null;return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return e.errno}}function _fd_sync(fd){try{var stream=SYSCALLS.getStreamFromFD(fd);if(stream.stream_ops&&stream.stream_ops.fsync){return stream.stream_ops.fsync(stream)}return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return e.errno}}function doWritev(stream,iov,iovcnt,offset){var ret=0;for(var i=0;i>2];var len=HEAPU32[iov+4>>2];iov+=8;var curr=FS.write(stream,HEAP8,ptr,len,offset);if(curr<0)return-1;ret+=curr}return ret}function _fd_write(fd,iov,iovcnt,pnum){try{var stream=SYSCALLS.getStreamFromFD(fd);var num=doWritev(stream,iov,iovcnt);HEAPU32[pnum>>2]=num;return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return e.errno}}function _getaddrinfo(node,service,hint,out){var addr=0;var port=0;var flags=0;var family=0;var type=0;var proto=0;var ai;function allocaddrinfo(family,type,proto,canon,addr,port){var sa,salen,ai;var errno;salen=family===10?28:16;addr=family===10?inetNtop6(addr):inetNtop4(addr);sa=_malloc(salen);errno=writeSockaddr(sa,family,addr,port);assert(!errno);ai=_malloc(32);HEAP32[ai+4>>2]=family;HEAP32[ai+8>>2]=type;HEAP32[ai+12>>2]=proto;HEAP32[ai+24>>2]=canon;HEAPU32[ai+20>>2]=sa;if(family===10){HEAP32[ai+16>>2]=28}else{HEAP32[ai+16>>2]=16}HEAP32[ai+28>>2]=0;return ai}if(hint){flags=HEAP32[hint>>2];family=HEAP32[hint+4>>2];type=HEAP32[hint+8>>2];proto=HEAP32[hint+12>>2]}if(type&&!proto){proto=type===2?17:6}if(!type&&proto){type=proto===17?2:1}if(proto===0){proto=6}if(type===0){type=1}if(!node&&!service){return-2}if(flags&~(1|2|4|1024|8|16|32)){return-1}if(hint!==0&&HEAP32[hint>>2]&2&&!node){return-1}if(flags&32){return-2}if(type!==0&&type!==1&&type!==2){return-7}if(family!==0&&family!==2&&family!==10){return-6}if(service){service=UTF8ToString(service);port=parseInt(service,10);if(isNaN(port)){if(flags&1024){return-2}return-8}}if(!node){if(family===0){family=2}if((flags&1)===0){if(family===2){addr=_htonl(2130706433)}else{addr=[0,0,0,1]}}ai=allocaddrinfo(family,type,proto,null,addr,port);HEAPU32[out>>2]=ai;return 0}node=UTF8ToString(node);addr=inetPton4(node);if(addr!==null){if(family===0||family===2){family=2}else if(family===10&&flags&8){addr=[0,0,_htonl(65535),addr];family=10}else{return-2}}else{addr=inetPton6(node);if(addr!==null){if(family===0||family===10){family=10}else{return-2}}}if(addr!=null){ai=allocaddrinfo(family,type,proto,node,addr,port);HEAPU32[out>>2]=ai;return 0}if(flags&4){return-2}node=DNS.lookup_name(node);addr=inetPton4(node);if(family===0){family=2}else if(family===10){addr=[0,0,_htonl(65535),addr]}ai=allocaddrinfo(family,type,proto,null,addr,port);HEAPU32[out>>2]=ai;return 0}function _getdtablesize(){err("missing function: getdtablesize");abort(-1)}function getHostByName(name){var ret=_malloc(20);var nameBuf=_malloc(name.length+1);stringToUTF8(name,nameBuf,name.length+1);HEAPU32[ret>>2]=nameBuf;var aliasesBuf=_malloc(4);HEAPU32[aliasesBuf>>2]=0;HEAPU32[ret+4>>2]=aliasesBuf;var afinet=2;HEAP32[ret+8>>2]=afinet;HEAP32[ret+12>>2]=4;var addrListBuf=_malloc(12);HEAPU32[addrListBuf>>2]=addrListBuf+8;HEAPU32[addrListBuf+4>>2]=0;HEAP32[addrListBuf+8>>2]=inetPton4(DNS.lookup_name(name));HEAPU32[ret+16>>2]=addrListBuf;return ret}function _gethostbyaddr(addr,addrlen,type){if(type!==2){setErrNo(5);return null}addr=HEAP32[addr>>2];var host=inetNtop4(addr);var lookup=DNS.lookup_addr(host);if(lookup){host=lookup}return getHostByName(host)}function _gethostbyname(name){return getHostByName(UTF8ToString(name))}function _gethostbyname_r(name,ret,buf,buflen,out,err){var data=_gethostbyname(name);_memcpy(ret,data,20);_free(data);HEAP32[err>>2]=0;HEAPU32[out>>2]=ret;return 0}function _getloadavg(loadavg,nelem){var limit=Math.min(nelem,3);var doubleSize=8;for(var i=0;i>3]=.1}return limit}function _getnameinfo(sa,salen,node,nodelen,serv,servlen,flags){var info=readSockaddr(sa,salen);if(info.errno){return-6}var port=info.port;var addr=info.addr;var overflowed=false;if(node&&nodelen){var lookup;if(flags&1||!(lookup=DNS.lookup_addr(addr))){if(flags&8){return-2}}else{addr=lookup}var numBytesWrittenExclNull=stringToUTF8(addr,node,nodelen);if(numBytesWrittenExclNull+1>=nodelen){overflowed=true}}if(serv&&servlen){port=""+port;var numBytesWrittenExclNull=stringToUTF8(port,serv,servlen);if(numBytesWrittenExclNull+1>=servlen){overflowed=true}}if(overflowed){return-12}return 0}var Protocols={list:[],map:{}};function _setprotoent(stayopen){function allocprotoent(name,proto,aliases){var nameBuf=_malloc(name.length+1);writeAsciiToMemory(name,nameBuf);var j=0;var length=aliases.length;var aliasListBuf=_malloc((length+1)*4);for(var i=0;i>2]=aliasBuf}HEAPU32[aliasListBuf+j>>2]=0;var pe=_malloc(12);HEAPU32[pe>>2]=nameBuf;HEAPU32[pe+4>>2]=aliasListBuf;HEAP32[pe+8>>2]=proto;return pe}var list=Protocols.list;var map=Protocols.map;if(list.length===0){var entry=allocprotoent("tcp",6,["TCP"]);list.push(entry);map["tcp"]=map["6"]=entry;entry=allocprotoent("udp",17,["UDP"]);list.push(entry);map["udp"]=map["17"]=entry}_setprotoent.index=0}function _getprotobyname(name){name=UTF8ToString(name);_setprotoent(true);var result=Protocols.map[name];return result}function _getprotobynumber(number){_setprotoent(true);var result=Protocols.map[number];return result}function __isLeapYear(year){return year%4===0&&(year%100!==0||year%400===0)}function __arraySum(array,index){var sum=0;for(var i=0;i<=index;sum+=array[i++]){}return sum}var __MONTH_DAYS_LEAP=[31,29,31,30,31,30,31,31,30,31,30,31];var __MONTH_DAYS_REGULAR=[31,28,31,30,31,30,31,31,30,31,30,31];function __addDays(date,days){var newDate=new Date(date.getTime());while(days>0){var leap=__isLeapYear(newDate.getFullYear());var currentMonth=newDate.getMonth();var daysInCurrentMonth=(leap?__MONTH_DAYS_LEAP:__MONTH_DAYS_REGULAR)[currentMonth];if(days>daysInCurrentMonth-newDate.getDate()){days-=daysInCurrentMonth-newDate.getDate()+1;newDate.setDate(1);if(currentMonth<11){newDate.setMonth(currentMonth+1)}else{newDate.setMonth(0);newDate.setFullYear(newDate.getFullYear()+1)}}else{newDate.setDate(newDate.getDate()+days);return newDate}}return newDate}function writeArrayToMemory(array,buffer){HEAP8.set(array,buffer)}function _strftime(s,maxsize,format,tm){var tm_zone=HEAP32[tm+40>>2];var date={tm_sec:HEAP32[tm>>2],tm_min:HEAP32[tm+4>>2],tm_hour:HEAP32[tm+8>>2],tm_mday:HEAP32[tm+12>>2],tm_mon:HEAP32[tm+16>>2],tm_year:HEAP32[tm+20>>2],tm_wday:HEAP32[tm+24>>2],tm_yday:HEAP32[tm+28>>2],tm_isdst:HEAP32[tm+32>>2],tm_gmtoff:HEAP32[tm+36>>2],tm_zone:tm_zone?UTF8ToString(tm_zone):""};var pattern=UTF8ToString(format);var EXPANSION_RULES_1={"%c":"%a %b %d %H:%M:%S %Y","%D":"%m/%d/%y","%F":"%Y-%m-%d","%h":"%b","%r":"%I:%M:%S %p","%R":"%H:%M","%T":"%H:%M:%S","%x":"%m/%d/%y","%X":"%H:%M:%S","%Ec":"%c","%EC":"%C","%Ex":"%m/%d/%y","%EX":"%H:%M:%S","%Ey":"%y","%EY":"%Y","%Od":"%d","%Oe":"%e","%OH":"%H","%OI":"%I","%Om":"%m","%OM":"%M","%OS":"%S","%Ou":"%u","%OU":"%U","%OV":"%V","%Ow":"%w","%OW":"%W","%Oy":"%y"};for(var rule in EXPANSION_RULES_1){pattern=pattern.replace(new RegExp(rule,"g"),EXPANSION_RULES_1[rule])}var WEEKDAYS=["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"];var MONTHS=["January","February","March","April","May","June","July","August","September","October","November","December"];function leadingSomething(value,digits,character){var str=typeof value=="number"?value.toString():value||"";while(str.length0?1:0}var compare;if((compare=sgn(date1.getFullYear()-date2.getFullYear()))===0){if((compare=sgn(date1.getMonth()-date2.getMonth()))===0){compare=sgn(date1.getDate()-date2.getDate())}}return compare}function getFirstWeekStartDate(janFourth){switch(janFourth.getDay()){case 0:return new Date(janFourth.getFullYear()-1,11,29);case 1:return janFourth;case 2:return new Date(janFourth.getFullYear(),0,3);case 3:return new Date(janFourth.getFullYear(),0,2);case 4:return new Date(janFourth.getFullYear(),0,1);case 5:return new Date(janFourth.getFullYear()-1,11,31);case 6:return new Date(janFourth.getFullYear()-1,11,30)}}function getWeekBasedYear(date){var thisDate=__addDays(new Date(date.tm_year+1900,0,1),date.tm_yday);var janFourthThisYear=new Date(thisDate.getFullYear(),0,4);var janFourthNextYear=new Date(thisDate.getFullYear()+1,0,4);var firstWeekStartThisYear=getFirstWeekStartDate(janFourthThisYear);var firstWeekStartNextYear=getFirstWeekStartDate(janFourthNextYear);if(compareByDay(firstWeekStartThisYear,thisDate)<=0){if(compareByDay(firstWeekStartNextYear,thisDate)<=0){return thisDate.getFullYear()+1}return thisDate.getFullYear()}return thisDate.getFullYear()-1}var EXPANSION_RULES_2={"%a":function(date){return WEEKDAYS[date.tm_wday].substring(0,3)},"%A":function(date){return WEEKDAYS[date.tm_wday]},"%b":function(date){return MONTHS[date.tm_mon].substring(0,3)},"%B":function(date){return MONTHS[date.tm_mon]},"%C":function(date){var year=date.tm_year+1900;return leadingNulls(year/100|0,2)},"%d":function(date){return leadingNulls(date.tm_mday,2)},"%e":function(date){return leadingSomething(date.tm_mday,2," ")},"%g":function(date){return getWeekBasedYear(date).toString().substring(2)},"%G":function(date){return getWeekBasedYear(date)},"%H":function(date){return leadingNulls(date.tm_hour,2)},"%I":function(date){var twelveHour=date.tm_hour;if(twelveHour==0)twelveHour=12;else if(twelveHour>12)twelveHour-=12;return leadingNulls(twelveHour,2)},"%j":function(date){return leadingNulls(date.tm_mday+__arraySum(__isLeapYear(date.tm_year+1900)?__MONTH_DAYS_LEAP:__MONTH_DAYS_REGULAR,date.tm_mon-1),3)},"%m":function(date){return leadingNulls(date.tm_mon+1,2)},"%M":function(date){return leadingNulls(date.tm_min,2)},"%n":function(){return"\n"},"%p":function(date){if(date.tm_hour>=0&&date.tm_hour<12){return"AM"}return"PM"},"%S":function(date){return leadingNulls(date.tm_sec,2)},"%t":function(){return"\t"},"%u":function(date){return date.tm_wday||7},"%U":function(date){var days=date.tm_yday+7-date.tm_wday;return leadingNulls(Math.floor(days/7),2)},"%V":function(date){var val=Math.floor((date.tm_yday+7-(date.tm_wday+6)%7)/7);if((date.tm_wday+371-date.tm_yday-2)%7<=2){val++}if(!val){val=52;var dec31=(date.tm_wday+7-date.tm_yday-1)%7;if(dec31==4||dec31==5&&__isLeapYear(date.tm_year%400-1)){val++}}else if(val==53){var jan1=(date.tm_wday+371-date.tm_yday)%7;if(jan1!=4&&(jan1!=3||!__isLeapYear(date.tm_year)))val=1}return leadingNulls(val,2)},"%w":function(date){return date.tm_wday},"%W":function(date){var days=date.tm_yday+7-(date.tm_wday+6)%7;return leadingNulls(Math.floor(days/7),2)},"%y":function(date){return(date.tm_year+1900).toString().substring(2)},"%Y":function(date){return date.tm_year+1900},"%z":function(date){var off=date.tm_gmtoff;var ahead=off>=0;off=Math.abs(off)/60;off=off/60*100+off%60;return(ahead?"+":"-")+String("0000"+off).slice(-4)},"%Z":function(date){return date.tm_zone},"%%":function(){return"%"}};pattern=pattern.replace(/%%/g,"\0\0");for(var rule in EXPANSION_RULES_2){if(pattern.includes(rule)){pattern=pattern.replace(new RegExp(rule,"g"),EXPANSION_RULES_2[rule](date))}}pattern=pattern.replace(/\0\0/g,"%");var bytes=intArrayFromString(pattern,false);if(bytes.length>maxsize){return 0}writeArrayToMemory(bytes,s);return bytes.length-1}function _strptime(buf,format,tm){var pattern=UTF8ToString(format);var SPECIAL_CHARS="\\!@#$^&*()+=-[]/{}|:<>?,.";for(var i=0,ii=SPECIAL_CHARS.length;i=0;i=pattern.indexOf("%")){capture.push(pattern[i+1]);pattern=pattern.replace(new RegExp("\\%"+pattern[i+1],"g"),"")}var matches=new RegExp("^"+pattern,"i").exec(UTF8ToString(buf));function initDate(){function fixup(value,min,max){return typeof value!="number"||isNaN(value)?min:value>=min?value<=max?value:max:min}return{year:fixup(HEAP32[tm+20>>2]+1900,1970,9999),month:fixup(HEAP32[tm+16>>2],0,11),day:fixup(HEAP32[tm+12>>2],1,31),hour:fixup(HEAP32[tm+8>>2],0,23),min:fixup(HEAP32[tm+4>>2],0,59),sec:fixup(HEAP32[tm>>2],0,59)}}if(matches){var date=initDate();var value;var getMatch=symbol=>{var pos=capture.indexOf(symbol);if(pos>=0){return matches[pos+1]}return};if(value=getMatch("S")){date.sec=jstoi_q(value)}if(value=getMatch("M")){date.min=jstoi_q(value)}if(value=getMatch("H")){date.hour=jstoi_q(value)}else if(value=getMatch("I")){var hour=jstoi_q(value);if(value=getMatch("p")){hour+=value.toUpperCase()[0]==="P"?12:0}date.hour=hour}if(value=getMatch("Y")){date.year=jstoi_q(value)}else if(value=getMatch("y")){var year=jstoi_q(value);if(value=getMatch("C")){year+=jstoi_q(value)*100}else{year+=year<69?2e3:1900}date.year=year}if(value=getMatch("m")){date.month=jstoi_q(value)-1}else if(value=getMatch("b")){date.month=MONTH_NUMBERS[value.substring(0,3).toUpperCase()]||0}if(value=getMatch("d")){date.day=jstoi_q(value)}else if(value=getMatch("j")){var day=jstoi_q(value);var leapYear=__isLeapYear(date.year);for(var month=0;month<12;++month){var daysUntilMonth=__arraySum(leapYear?__MONTH_DAYS_LEAP:__MONTH_DAYS_REGULAR,month-1);if(day<=daysUntilMonth+(leapYear?__MONTH_DAYS_LEAP:__MONTH_DAYS_REGULAR)[month]){date.day=day-daysUntilMonth}}}else if(value=getMatch("a")){var weekDay=value.substring(0,3).toUpperCase();if(value=getMatch("U")){var weekDayNumber=DAY_NUMBERS_SUN_FIRST[weekDay];var weekNumber=jstoi_q(value);var janFirst=new Date(date.year,0,1);var endDate;if(janFirst.getDay()===0){endDate=__addDays(janFirst,weekDayNumber+7*(weekNumber-1))}else{endDate=__addDays(janFirst,7-janFirst.getDay()+weekDayNumber+7*(weekNumber-1))}date.day=endDate.getDate();date.month=endDate.getMonth()}else if(value=getMatch("W")){var weekDayNumber=DAY_NUMBERS_MON_FIRST[weekDay];var weekNumber=jstoi_q(value);var janFirst=new Date(date.year,0,1);var endDate;if(janFirst.getDay()===1){endDate=__addDays(janFirst,weekDayNumber+7*(weekNumber-1))}else{endDate=__addDays(janFirst,7-janFirst.getDay()+1+weekDayNumber+7*(weekNumber-1))}date.day=endDate.getDate();date.month=endDate.getMonth()}}var fullDate=new Date(date.year,date.month,date.day,date.hour,date.min,date.sec,0);HEAP32[tm>>2]=fullDate.getSeconds();HEAP32[tm+4>>2]=fullDate.getMinutes();HEAP32[tm+8>>2]=fullDate.getHours();HEAP32[tm+12>>2]=fullDate.getDate();HEAP32[tm+16>>2]=fullDate.getMonth();HEAP32[tm+20>>2]=fullDate.getFullYear()-1900;HEAP32[tm+24>>2]=fullDate.getDay();HEAP32[tm+28>>2]=__arraySum(__isLeapYear(fullDate.getFullYear())?__MONTH_DAYS_LEAP:__MONTH_DAYS_REGULAR,fullDate.getMonth()-1)+fullDate.getDate()-1;HEAP32[tm+32>>2]=0;return buf+intArrayFromString(matches[0]).length-1}return 0}function handleException(e){if(e instanceof ExitStatus||e=="unwind"){return EXITSTATUS}quit_(1,e)}function getCFunc(ident){var func=Module["_"+ident];return func}function ccall(ident,returnType,argTypes,args,opts){var toC={"string":str=>{var ret=0;if(str!==null&&str!==undefined&&str!==0){var len=(str.length<<2)+1;ret=stackAlloc(len);stringToUTF8(str,ret,len)}return ret},"array":arr=>{var ret=stackAlloc(arr.length);writeArrayToMemory(arr,ret);return ret}};function convertReturnValue(ret){if(returnType==="string"){return UTF8ToString(ret)}if(returnType==="boolean")return Boolean(ret);return ret}var func=getCFunc(ident);var cArgs=[];var stack=0;if(args){for(var i=0;i0){return}preRun();if(runDependencies>0){return}function doRun(){if(calledRun)return;calledRun=true;Module["calledRun"]=true;if(ABORT)return;initRuntime();preMain();if(Module["onRuntimeInitialized"])Module["onRuntimeInitialized"]();if(shouldRunNow)callMain(args);postRun()}if(Module["setStatus"]){Module["setStatus"]("Running...");setTimeout(function(){setTimeout(function(){Module["setStatus"]("")},1);doRun()},1)}else{doRun()}}if(Module["preInit"]){if(typeof Module["preInit"]=="function")Module["preInit"]=[Module["preInit"]];while(Module["preInit"].length>0){Module["preInit"].pop()()}}var shouldRunNow=false;if(Module["noInitialRun"])shouldRunNow=false;run(); +export default function(Env, PHPLoader) {var Module=typeof PHPLoader!="undefined"?PHPLoader:{};var moduleOverrides=Object.assign({},Module);var arguments_=[];var thisProgram="./this.program";var quit_=(status,toThrow)=>{throw toThrow};var ENVIRONMENT_IS_WEB=Env==="WEB";var ENVIRONMENT_IS_WORKER=Env==="WORKER";var ENVIRONMENT_IS_NODE=Env==="NODE";var scriptDirectory="";function locateFile(path){if(Module["locateFile"]){return Module["locateFile"](path,scriptDirectory)}return scriptDirectory+path}var read_,readAsync,readBinary,setWindowTitle;if(ENVIRONMENT_IS_WEB||ENVIRONMENT_IS_WORKER){if(ENVIRONMENT_IS_WORKER){scriptDirectory=self.location.href}else if(typeof document!="undefined"&&document.currentScript){scriptDirectory=document.currentScript.src}if(scriptDirectory.indexOf("blob:")!==0){scriptDirectory=scriptDirectory.substr(0,scriptDirectory.replace(/[?#].*/,"").lastIndexOf("/")+1)}else{scriptDirectory=""}{read_=url=>{var xhr=new XMLHttpRequest;xhr.open("GET",url,false);xhr.send(null);return xhr.responseText};if(ENVIRONMENT_IS_WORKER){readBinary=url=>{var xhr=new XMLHttpRequest;xhr.open("GET",url,false);xhr.responseType="arraybuffer";xhr.send(null);return new Uint8Array(xhr.response)}}readAsync=(url,onload,onerror)=>{var xhr=new XMLHttpRequest;xhr.open("GET",url,true);xhr.responseType="arraybuffer";xhr.onload=()=>{if(xhr.status==200||xhr.status==0&&xhr.response){onload(xhr.response);return}onerror()};xhr.onerror=onerror;xhr.send(null)}}setWindowTitle=title=>document.title=title}else{}var out=Module["print"]||console.log.bind(console);var err=Module["printErr"]||console.warn.bind(console);Object.assign(Module,moduleOverrides);moduleOverrides=null;if(Module["arguments"])arguments_=Module["arguments"];if(Module["thisProgram"])thisProgram=Module["thisProgram"];if(Module["quit"])quit_=Module["quit"];var wasmBinary;if(Module["wasmBinary"])wasmBinary=Module["wasmBinary"];var noExitRuntime=Module["noExitRuntime"]||true;if(typeof WebAssembly!="object"){abort("no native wasm support detected")}var wasmMemory;var ABORT=false;var EXITSTATUS;function assert(condition,text){if(!condition){abort(text)}}var UTF8Decoder=typeof TextDecoder!="undefined"?new TextDecoder("utf8"):undefined;function UTF8ArrayToString(heapOrArray,idx,maxBytesToRead){var endIdx=idx+maxBytesToRead;var endPtr=idx;while(heapOrArray[endPtr]&&!(endPtr>=endIdx))++endPtr;if(endPtr-idx>16&&heapOrArray.buffer&&UTF8Decoder){return UTF8Decoder.decode(heapOrArray.subarray(idx,endPtr))}var str="";while(idx>10,56320|ch&1023)}}return str}function UTF8ToString(ptr,maxBytesToRead){return ptr?UTF8ArrayToString(HEAPU8,ptr,maxBytesToRead):""}function stringToUTF8Array(str,heap,outIdx,maxBytesToWrite){if(!(maxBytesToWrite>0))return 0;var startIdx=outIdx;var endIdx=outIdx+maxBytesToWrite-1;for(var i=0;i=55296&&u<=57343){var u1=str.charCodeAt(++i);u=65536+((u&1023)<<10)|u1&1023}if(u<=127){if(outIdx>=endIdx)break;heap[outIdx++]=u}else if(u<=2047){if(outIdx+1>=endIdx)break;heap[outIdx++]=192|u>>6;heap[outIdx++]=128|u&63}else if(u<=65535){if(outIdx+2>=endIdx)break;heap[outIdx++]=224|u>>12;heap[outIdx++]=128|u>>6&63;heap[outIdx++]=128|u&63}else{if(outIdx+3>=endIdx)break;heap[outIdx++]=240|u>>18;heap[outIdx++]=128|u>>12&63;heap[outIdx++]=128|u>>6&63;heap[outIdx++]=128|u&63}}heap[outIdx]=0;return outIdx-startIdx}function stringToUTF8(str,outPtr,maxBytesToWrite){return stringToUTF8Array(str,HEAPU8,outPtr,maxBytesToWrite)}function lengthBytesUTF8(str){var len=0;for(var i=0;i=55296&&c<=57343){len+=4;++i}else{len+=3}}return len}var buffer,HEAP8,HEAPU8,HEAP16,HEAPU16,HEAP32,HEAPU32,HEAPF32,HEAPF64;function updateGlobalBufferAndViews(buf){buffer=buf;Module["HEAP8"]=HEAP8=new Int8Array(buf);Module["HEAP16"]=HEAP16=new Int16Array(buf);Module["HEAP32"]=HEAP32=new Int32Array(buf);Module["HEAPU8"]=HEAPU8=new Uint8Array(buf);Module["HEAPU16"]=HEAPU16=new Uint16Array(buf);Module["HEAPU32"]=HEAPU32=new Uint32Array(buf);Module["HEAPF32"]=HEAPF32=new Float32Array(buf);Module["HEAPF64"]=HEAPF64=new Float64Array(buf)}var INITIAL_MEMORY=Module["INITIAL_MEMORY"]||1073741824;var wasmTable;var __ATPRERUN__=[];var __ATINIT__=[];var __ATPOSTRUN__=[];var runtimeInitialized=false;function keepRuntimeAlive(){return noExitRuntime}function preRun(){if(Module["preRun"]){if(typeof Module["preRun"]=="function")Module["preRun"]=[Module["preRun"]];while(Module["preRun"].length){addOnPreRun(Module["preRun"].shift())}}callRuntimeCallbacks(__ATPRERUN__)}function initRuntime(){runtimeInitialized=true;if(!Module["noFSInit"]&&!FS.init.initialized)FS.init();FS.ignorePermissions=false;TTY.init();SOCKFS.root=FS.mount(SOCKFS,{},null);PIPEFS.root=FS.mount(PIPEFS,{},null);callRuntimeCallbacks(__ATINIT__)}function postRun(){if(Module["postRun"]){if(typeof Module["postRun"]=="function")Module["postRun"]=[Module["postRun"]];while(Module["postRun"].length){addOnPostRun(Module["postRun"].shift())}}callRuntimeCallbacks(__ATPOSTRUN__)}function addOnPreRun(cb){__ATPRERUN__.unshift(cb)}function addOnInit(cb){__ATINIT__.unshift(cb)}function addOnPostRun(cb){__ATPOSTRUN__.unshift(cb)}var runDependencies=0;var runDependencyWatcher=null;var dependenciesFulfilled=null;function getUniqueRunDependency(id){return id}function addRunDependency(id){runDependencies++;if(Module["monitorRunDependencies"]){Module["monitorRunDependencies"](runDependencies)}}function removeRunDependency(id){runDependencies--;if(Module["monitorRunDependencies"]){Module["monitorRunDependencies"](runDependencies)}if(runDependencies==0){if(runDependencyWatcher!==null){clearInterval(runDependencyWatcher);runDependencyWatcher=null}if(dependenciesFulfilled){var callback=dependenciesFulfilled;dependenciesFulfilled=null;callback()}}}function abort(what){{if(Module["onAbort"]){Module["onAbort"](what)}}what="Aborted("+what+")";err(what);ABORT=true;EXITSTATUS=1;what+=". Build with -sASSERTIONS for more info.";var e=new WebAssembly.RuntimeError(what);throw e}var dataURIPrefix="data:application/octet-stream;base64,";function isDataURI(filename){return filename.startsWith(dataURIPrefix)}var wasmBinaryFile;wasmBinaryFile="/php.wasm?c2b0436276836db399fff59692e4704f";if(!isDataURI(wasmBinaryFile)){wasmBinaryFile=locateFile(wasmBinaryFile)}function getBinary(file){try{if(file==wasmBinaryFile&&wasmBinary){return new Uint8Array(wasmBinary)}if(readBinary){return readBinary(file)}throw"both async and sync fetching of the wasm failed"}catch(err){abort(err)}}function getBinaryPromise(){if(!wasmBinary&&(ENVIRONMENT_IS_WEB||ENVIRONMENT_IS_WORKER)){if(typeof fetch=="function"){return fetch(wasmBinaryFile,{credentials:"same-origin"}).then(function(response){if(!response["ok"]){throw"failed to load wasm binary file at '"+wasmBinaryFile+"'"}return response["arrayBuffer"]()}).catch(function(){return getBinary(wasmBinaryFile)})}}return Promise.resolve().then(function(){return getBinary(wasmBinaryFile)})}function createWasm(){var info={"a":asmLibraryArg};function receiveInstance(instance,module){var exports=instance.exports;Module["asm"]=exports;wasmMemory=Module["asm"]["Ma"];updateGlobalBufferAndViews(wasmMemory.buffer);wasmTable=Module["asm"]["Ra"];addOnInit(Module["asm"]["Na"]);removeRunDependency("wasm-instantiate")}addRunDependency("wasm-instantiate");function receiveInstantiationResult(result){receiveInstance(result["instance"])}function instantiateArrayBuffer(receiver){return getBinaryPromise().then(function(binary){return WebAssembly.instantiate(binary,info)}).then(function(instance){return instance}).then(receiver,function(reason){err("failed to asynchronously prepare wasm: "+reason);abort(reason)})}function instantiateAsync(){if(!wasmBinary&&typeof WebAssembly.instantiateStreaming=="function"&&!isDataURI(wasmBinaryFile)&&typeof fetch=="function"){return fetch(wasmBinaryFile,{credentials:"same-origin"}).then(function(response){var result=WebAssembly.instantiateStreaming(response,info);return result.then(receiveInstantiationResult,function(reason){err("wasm streaming compile failed: "+reason);err("falling back to ArrayBuffer instantiation");return instantiateArrayBuffer(receiveInstantiationResult)})})}else{return instantiateArrayBuffer(receiveInstantiationResult)}}if(Module["instantiateWasm"]){try{var exports=Module["instantiateWasm"](info,receiveInstance);return exports}catch(e){err("Module.instantiateWasm callback failed with error: "+e);return false}}instantiateAsync();return{}}var tempDouble;var tempI64;function ExitStatus(status){this.name="ExitStatus";this.message="Program terminated with exit("+status+")";this.status=status}function callRuntimeCallbacks(callbacks){while(callbacks.length>0){callbacks.shift()(Module)}}function ___assert_fail(condition,filename,line,func){abort("Assertion failed: "+UTF8ToString(condition)+", at: "+[filename?UTF8ToString(filename):"unknown filename",line,func?UTF8ToString(func):"unknown function"])}var wasmTableMirror=[];function getWasmTableEntry(funcPtr){var func=wasmTableMirror[funcPtr];if(!func){if(funcPtr>=wasmTableMirror.length)wasmTableMirror.length=funcPtr+1;wasmTableMirror[funcPtr]=func=wasmTable.get(funcPtr)}return func}function ___call_sighandler(fp,sig){getWasmTableEntry(fp)(sig)}var PATH={isAbs:path=>path.charAt(0)==="/",splitPath:filename=>{var splitPathRe=/^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;return splitPathRe.exec(filename).slice(1)},normalizeArray:(parts,allowAboveRoot)=>{var up=0;for(var i=parts.length-1;i>=0;i--){var last=parts[i];if(last==="."){parts.splice(i,1)}else if(last===".."){parts.splice(i,1);up++}else if(up){parts.splice(i,1);up--}}if(allowAboveRoot){for(;up;up--){parts.unshift("..")}}return parts},normalize:path=>{var isAbsolute=PATH.isAbs(path),trailingSlash=path.substr(-1)==="/";path=PATH.normalizeArray(path.split("/").filter(p=>!!p),!isAbsolute).join("/");if(!path&&!isAbsolute){path="."}if(path&&trailingSlash){path+="/"}return(isAbsolute?"/":"")+path},dirname:path=>{var result=PATH.splitPath(path),root=result[0],dir=result[1];if(!root&&!dir){return"."}if(dir){dir=dir.substr(0,dir.length-1)}return root+dir},basename:path=>{if(path==="/")return"/";path=PATH.normalize(path);path=path.replace(/\/$/,"");var lastSlash=path.lastIndexOf("/");if(lastSlash===-1)return path;return path.substr(lastSlash+1)},join:function(){var paths=Array.prototype.slice.call(arguments);return PATH.normalize(paths.join("/"))},join2:(l,r)=>{return PATH.normalize(l+"/"+r)}};function getRandomDevice(){if(typeof crypto=="object"&&typeof crypto["getRandomValues"]=="function"){var randomBuffer=new Uint8Array(1);return()=>{crypto.getRandomValues(randomBuffer);return randomBuffer[0]}}else return()=>abort("randomDevice")}var PATH_FS={resolve:function(){var resolvedPath="",resolvedAbsolute=false;for(var i=arguments.length-1;i>=-1&&!resolvedAbsolute;i--){var path=i>=0?arguments[i]:FS.cwd();if(typeof path!="string"){throw new TypeError("Arguments to path.resolve must be strings")}else if(!path){return""}resolvedPath=path+"/"+resolvedPath;resolvedAbsolute=PATH.isAbs(path)}resolvedPath=PATH.normalizeArray(resolvedPath.split("/").filter(p=>!!p),!resolvedAbsolute).join("/");return(resolvedAbsolute?"/":"")+resolvedPath||"."},relative:(from,to)=>{from=PATH_FS.resolve(from).substr(1);to=PATH_FS.resolve(to).substr(1);function trim(arr){var start=0;for(;start=0;end--){if(arr[end]!=="")break}if(start>end)return[];return arr.slice(start,end-start+1)}var fromParts=trim(from.split("/"));var toParts=trim(to.split("/"));var length=Math.min(fromParts.length,toParts.length);var samePartsLength=length;for(var i=0;i0?length:lengthBytesUTF8(stringy)+1;var u8array=new Array(len);var numBytesWritten=stringToUTF8Array(stringy,u8array,0,u8array.length);if(dontAddNull)u8array.length=numBytesWritten;return u8array}var TTY={ttys:[],init:function(){},shutdown:function(){},register:function(dev,ops){TTY.ttys[dev]={input:[],output:[],ops:ops};FS.registerDevice(dev,TTY.stream_ops)},stream_ops:{open:function(stream){var tty=TTY.ttys[stream.node.rdev];if(!tty){throw new FS.ErrnoError(43)}stream.tty=tty;stream.seekable=false},close:function(stream){stream.tty.ops.fsync(stream.tty)},fsync:function(stream){stream.tty.ops.fsync(stream.tty)},read:function(stream,buffer,offset,length,pos){if(!stream.tty||!stream.tty.ops.get_char){throw new FS.ErrnoError(60)}var bytesRead=0;for(var i=0;i0){out(UTF8ArrayToString(tty.output,0));tty.output=[]}}},default_tty1_ops:{put_char:function(tty,val){if(val===null||val===10){err(UTF8ArrayToString(tty.output,0));tty.output=[]}else{if(val!=0)tty.output.push(val)}},fsync:function(tty){if(tty.output&&tty.output.length>0){err(UTF8ArrayToString(tty.output,0));tty.output=[]}}}};function zeroMemory(address,size){HEAPU8.fill(0,address,address+size);return address}function alignMemory(size,alignment){return Math.ceil(size/alignment)*alignment}function mmapAlloc(size){size=alignMemory(size,65536);var ptr=_emscripten_builtin_memalign(65536,size);if(!ptr)return 0;return zeroMemory(ptr,size)}var MEMFS={ops_table:null,mount:function(mount){return MEMFS.createNode(null,"/",16384|511,0)},createNode:function(parent,name,mode,dev){if(FS.isBlkdev(mode)||FS.isFIFO(mode)){throw new FS.ErrnoError(63)}if(!MEMFS.ops_table){MEMFS.ops_table={dir:{node:{getattr:MEMFS.node_ops.getattr,setattr:MEMFS.node_ops.setattr,lookup:MEMFS.node_ops.lookup,mknod:MEMFS.node_ops.mknod,rename:MEMFS.node_ops.rename,unlink:MEMFS.node_ops.unlink,rmdir:MEMFS.node_ops.rmdir,readdir:MEMFS.node_ops.readdir,symlink:MEMFS.node_ops.symlink},stream:{llseek:MEMFS.stream_ops.llseek}},file:{node:{getattr:MEMFS.node_ops.getattr,setattr:MEMFS.node_ops.setattr},stream:{llseek:MEMFS.stream_ops.llseek,read:MEMFS.stream_ops.read,write:MEMFS.stream_ops.write,allocate:MEMFS.stream_ops.allocate,mmap:MEMFS.stream_ops.mmap,msync:MEMFS.stream_ops.msync}},link:{node:{getattr:MEMFS.node_ops.getattr,setattr:MEMFS.node_ops.setattr,readlink:MEMFS.node_ops.readlink},stream:{}},chrdev:{node:{getattr:MEMFS.node_ops.getattr,setattr:MEMFS.node_ops.setattr},stream:FS.chrdev_stream_ops}}}var node=FS.createNode(parent,name,mode,dev);if(FS.isDir(node.mode)){node.node_ops=MEMFS.ops_table.dir.node;node.stream_ops=MEMFS.ops_table.dir.stream;node.contents={}}else if(FS.isFile(node.mode)){node.node_ops=MEMFS.ops_table.file.node;node.stream_ops=MEMFS.ops_table.file.stream;node.usedBytes=0;node.contents=null}else if(FS.isLink(node.mode)){node.node_ops=MEMFS.ops_table.link.node;node.stream_ops=MEMFS.ops_table.link.stream}else if(FS.isChrdev(node.mode)){node.node_ops=MEMFS.ops_table.chrdev.node;node.stream_ops=MEMFS.ops_table.chrdev.stream}node.timestamp=Date.now();if(parent){parent.contents[name]=node;parent.timestamp=node.timestamp}return node},getFileDataAsTypedArray:function(node){if(!node.contents)return new Uint8Array(0);if(node.contents.subarray)return node.contents.subarray(0,node.usedBytes);return new Uint8Array(node.contents)},expandFileStorage:function(node,newCapacity){var prevCapacity=node.contents?node.contents.length:0;if(prevCapacity>=newCapacity)return;var CAPACITY_DOUBLING_MAX=1024*1024;newCapacity=Math.max(newCapacity,prevCapacity*(prevCapacity>>0);if(prevCapacity!=0)newCapacity=Math.max(newCapacity,256);var oldContents=node.contents;node.contents=new Uint8Array(newCapacity);if(node.usedBytes>0)node.contents.set(oldContents.subarray(0,node.usedBytes),0)},resizeFileStorage:function(node,newSize){if(node.usedBytes==newSize)return;if(newSize==0){node.contents=null;node.usedBytes=0}else{var oldContents=node.contents;node.contents=new Uint8Array(newSize);if(oldContents){node.contents.set(oldContents.subarray(0,Math.min(newSize,node.usedBytes)))}node.usedBytes=newSize}},node_ops:{getattr:function(node){var attr={};attr.dev=FS.isChrdev(node.mode)?node.id:1;attr.ino=node.id;attr.mode=node.mode;attr.nlink=1;attr.uid=0;attr.gid=0;attr.rdev=node.rdev;if(FS.isDir(node.mode)){attr.size=4096}else if(FS.isFile(node.mode)){attr.size=node.usedBytes}else if(FS.isLink(node.mode)){attr.size=node.link.length}else{attr.size=0}attr.atime=new Date(node.timestamp);attr.mtime=new Date(node.timestamp);attr.ctime=new Date(node.timestamp);attr.blksize=4096;attr.blocks=Math.ceil(attr.size/attr.blksize);return attr},setattr:function(node,attr){if(attr.mode!==undefined){node.mode=attr.mode}if(attr.timestamp!==undefined){node.timestamp=attr.timestamp}if(attr.size!==undefined){MEMFS.resizeFileStorage(node,attr.size)}},lookup:function(parent,name){throw FS.genericErrors[44]},mknod:function(parent,name,mode,dev){return MEMFS.createNode(parent,name,mode,dev)},rename:function(old_node,new_dir,new_name){if(FS.isDir(old_node.mode)){var new_node;try{new_node=FS.lookupNode(new_dir,new_name)}catch(e){}if(new_node){for(var i in new_node.contents){throw new FS.ErrnoError(55)}}}delete old_node.parent.contents[old_node.name];old_node.parent.timestamp=Date.now();old_node.name=new_name;new_dir.contents[new_name]=old_node;new_dir.timestamp=old_node.parent.timestamp;old_node.parent=new_dir},unlink:function(parent,name){delete parent.contents[name];parent.timestamp=Date.now()},rmdir:function(parent,name){var node=FS.lookupNode(parent,name);for(var i in node.contents){throw new FS.ErrnoError(55)}delete parent.contents[name];parent.timestamp=Date.now()},readdir:function(node){var entries=[".",".."];for(var key in node.contents){if(!node.contents.hasOwnProperty(key)){continue}entries.push(key)}return entries},symlink:function(parent,newname,oldpath){var node=MEMFS.createNode(parent,newname,511|40960,0);node.link=oldpath;return node},readlink:function(node){if(!FS.isLink(node.mode)){throw new FS.ErrnoError(28)}return node.link}},stream_ops:{read:function(stream,buffer,offset,length,position){var contents=stream.node.contents;if(position>=stream.node.usedBytes)return 0;var size=Math.min(stream.node.usedBytes-position,length);if(size>8&&contents.subarray){buffer.set(contents.subarray(position,position+size),offset)}else{for(var i=0;i0||position+length{assert(arrayBuffer,'Loading data file "'+url+'" failed (no arrayBuffer).');onload(new Uint8Array(arrayBuffer));if(dep)removeRunDependency(dep)},event=>{if(onerror){onerror()}else{throw'Loading data file "'+url+'" failed.'}});if(dep)addRunDependency(dep)}var FS={root:null,mounts:[],devices:{},streams:[],nextInode:1,nameTable:null,currentPath:"/",initialized:false,ignorePermissions:true,ErrnoError:null,genericErrors:{},filesystems:null,syncFSRequests:0,lookupPath:(path,opts={})=>{path=PATH_FS.resolve(FS.cwd(),path);if(!path)return{path:"",node:null};var defaults={follow_mount:true,recurse_count:0};opts=Object.assign(defaults,opts);if(opts.recurse_count>8){throw new FS.ErrnoError(32)}var parts=PATH.normalizeArray(path.split("/").filter(p=>!!p),false);var current=FS.root;var current_path="/";for(var i=0;i40){throw new FS.ErrnoError(32)}}}}return{path:current_path,node:current}},getPath:node=>{var path;while(true){if(FS.isRoot(node)){var mount=node.mount.mountpoint;if(!path)return mount;return mount[mount.length-1]!=="/"?mount+"/"+path:mount+path}path=path?node.name+"/"+path:node.name;node=node.parent}},hashName:(parentid,name)=>{var hash=0;for(var i=0;i>>0)%FS.nameTable.length},hashAddNode:node=>{var hash=FS.hashName(node.parent.id,node.name);node.name_next=FS.nameTable[hash];FS.nameTable[hash]=node},hashRemoveNode:node=>{var hash=FS.hashName(node.parent.id,node.name);if(FS.nameTable[hash]===node){FS.nameTable[hash]=node.name_next}else{var current=FS.nameTable[hash];while(current){if(current.name_next===node){current.name_next=node.name_next;break}current=current.name_next}}},lookupNode:(parent,name)=>{var errCode=FS.mayLookup(parent);if(errCode){throw new FS.ErrnoError(errCode,parent)}var hash=FS.hashName(parent.id,name);for(var node=FS.nameTable[hash];node;node=node.name_next){var nodeName=node.name;if(node.parent.id===parent.id&&nodeName===name){return node}}return FS.lookup(parent,name)},createNode:(parent,name,mode,rdev)=>{var node=new FS.FSNode(parent,name,mode,rdev);FS.hashAddNode(node);return node},destroyNode:node=>{FS.hashRemoveNode(node)},isRoot:node=>{return node===node.parent},isMountpoint:node=>{return!!node.mounted},isFile:mode=>{return(mode&61440)===32768},isDir:mode=>{return(mode&61440)===16384},isLink:mode=>{return(mode&61440)===40960},isChrdev:mode=>{return(mode&61440)===8192},isBlkdev:mode=>{return(mode&61440)===24576},isFIFO:mode=>{return(mode&61440)===4096},isSocket:mode=>{return(mode&49152)===49152},flagModes:{"r":0,"r+":2,"w":577,"w+":578,"a":1089,"a+":1090},modeStringToFlags:str=>{var flags=FS.flagModes[str];if(typeof flags=="undefined"){throw new Error("Unknown file open mode: "+str)}return flags},flagsToPermissionString:flag=>{var perms=["r","w","rw"][flag&3];if(flag&512){perms+="w"}return perms},nodePermissions:(node,perms)=>{if(FS.ignorePermissions){return 0}if(perms.includes("r")&&!(node.mode&292)){return 2}else if(perms.includes("w")&&!(node.mode&146)){return 2}else if(perms.includes("x")&&!(node.mode&73)){return 2}return 0},mayLookup:dir=>{var errCode=FS.nodePermissions(dir,"x");if(errCode)return errCode;if(!dir.node_ops.lookup)return 2;return 0},mayCreate:(dir,name)=>{try{var node=FS.lookupNode(dir,name);return 20}catch(e){}return FS.nodePermissions(dir,"wx")},mayDelete:(dir,name,isdir)=>{var node;try{node=FS.lookupNode(dir,name)}catch(e){return e.errno}var errCode=FS.nodePermissions(dir,"wx");if(errCode){return errCode}if(isdir){if(!FS.isDir(node.mode)){return 54}if(FS.isRoot(node)||FS.getPath(node)===FS.cwd()){return 10}}else{if(FS.isDir(node.mode)){return 31}}return 0},mayOpen:(node,flags)=>{if(!node){return 44}if(FS.isLink(node.mode)){return 32}else if(FS.isDir(node.mode)){if(FS.flagsToPermissionString(flags)!=="r"||flags&512){return 31}}return FS.nodePermissions(node,FS.flagsToPermissionString(flags))},MAX_OPEN_FDS:4096,nextfd:(fd_start=0,fd_end=FS.MAX_OPEN_FDS)=>{for(var fd=fd_start;fd<=fd_end;fd++){if(!FS.streams[fd]){return fd}}throw new FS.ErrnoError(33)},getStream:fd=>FS.streams[fd],createStream:(stream,fd_start,fd_end)=>{if(!FS.FSStream){FS.FSStream=function(){this.shared={}};FS.FSStream.prototype={};Object.defineProperties(FS.FSStream.prototype,{object:{get:function(){return this.node},set:function(val){this.node=val}},isRead:{get:function(){return(this.flags&2097155)!==1}},isWrite:{get:function(){return(this.flags&2097155)!==0}},isAppend:{get:function(){return this.flags&1024}},flags:{get:function(){return this.shared.flags},set:function(val){this.shared.flags=val}},position:{get:function(){return this.shared.position},set:function(val){this.shared.position=val}}})}stream=Object.assign(new FS.FSStream,stream);var fd=FS.nextfd(fd_start,fd_end);stream.fd=fd;FS.streams[fd]=stream;return stream},closeStream:fd=>{FS.streams[fd]=null},chrdev_stream_ops:{open:stream=>{var device=FS.getDevice(stream.node.rdev);stream.stream_ops=device.stream_ops;if(stream.stream_ops.open){stream.stream_ops.open(stream)}},llseek:()=>{throw new FS.ErrnoError(70)}},major:dev=>dev>>8,minor:dev=>dev&255,makedev:(ma,mi)=>ma<<8|mi,registerDevice:(dev,ops)=>{FS.devices[dev]={stream_ops:ops}},getDevice:dev=>FS.devices[dev],getMounts:mount=>{var mounts=[];var check=[mount];while(check.length){var m=check.pop();mounts.push(m);check.push.apply(check,m.mounts)}return mounts},syncfs:(populate,callback)=>{if(typeof populate=="function"){callback=populate;populate=false}FS.syncFSRequests++;if(FS.syncFSRequests>1){err("warning: "+FS.syncFSRequests+" FS.syncfs operations in flight at once, probably just doing extra work")}var mounts=FS.getMounts(FS.root.mount);var completed=0;function doCallback(errCode){FS.syncFSRequests--;return callback(errCode)}function done(errCode){if(errCode){if(!done.errored){done.errored=true;return doCallback(errCode)}return}if(++completed>=mounts.length){doCallback(null)}}mounts.forEach(mount=>{if(!mount.type.syncfs){return done(null)}mount.type.syncfs(mount,populate,done)})},mount:(type,opts,mountpoint)=>{var root=mountpoint==="/";var pseudo=!mountpoint;var node;if(root&&FS.root){throw new FS.ErrnoError(10)}else if(!root&&!pseudo){var lookup=FS.lookupPath(mountpoint,{follow_mount:false});mountpoint=lookup.path;node=lookup.node;if(FS.isMountpoint(node)){throw new FS.ErrnoError(10)}if(!FS.isDir(node.mode)){throw new FS.ErrnoError(54)}}var mount={type:type,opts:opts,mountpoint:mountpoint,mounts:[]};var mountRoot=type.mount(mount);mountRoot.mount=mount;mount.root=mountRoot;if(root){FS.root=mountRoot}else if(node){node.mounted=mount;if(node.mount){node.mount.mounts.push(mount)}}return mountRoot},unmount:mountpoint=>{var lookup=FS.lookupPath(mountpoint,{follow_mount:false});if(!FS.isMountpoint(lookup.node)){throw new FS.ErrnoError(28)}var node=lookup.node;var mount=node.mounted;var mounts=FS.getMounts(mount);Object.keys(FS.nameTable).forEach(hash=>{var current=FS.nameTable[hash];while(current){var next=current.name_next;if(mounts.includes(current.mount)){FS.destroyNode(current)}current=next}});node.mounted=null;var idx=node.mount.mounts.indexOf(mount);node.mount.mounts.splice(idx,1)},lookup:(parent,name)=>{return parent.node_ops.lookup(parent,name)},mknod:(path,mode,dev)=>{var lookup=FS.lookupPath(path,{parent:true});var parent=lookup.node;var name=PATH.basename(path);if(!name||name==="."||name===".."){throw new FS.ErrnoError(28)}var errCode=FS.mayCreate(parent,name);if(errCode){throw new FS.ErrnoError(errCode)}if(!parent.node_ops.mknod){throw new FS.ErrnoError(63)}return parent.node_ops.mknod(parent,name,mode,dev)},create:(path,mode)=>{mode=mode!==undefined?mode:438;mode&=4095;mode|=32768;return FS.mknod(path,mode,0)},mkdir:(path,mode)=>{mode=mode!==undefined?mode:511;mode&=511|512;mode|=16384;return FS.mknod(path,mode,0)},mkdirTree:(path,mode)=>{var dirs=path.split("/");var d="";for(var i=0;i{if(typeof dev=="undefined"){dev=mode;mode=438}mode|=8192;return FS.mknod(path,mode,dev)},symlink:(oldpath,newpath)=>{if(!PATH_FS.resolve(oldpath)){throw new FS.ErrnoError(44)}var lookup=FS.lookupPath(newpath,{parent:true});var parent=lookup.node;if(!parent){throw new FS.ErrnoError(44)}var newname=PATH.basename(newpath);var errCode=FS.mayCreate(parent,newname);if(errCode){throw new FS.ErrnoError(errCode)}if(!parent.node_ops.symlink){throw new FS.ErrnoError(63)}return parent.node_ops.symlink(parent,newname,oldpath)},rename:(old_path,new_path)=>{var old_dirname=PATH.dirname(old_path);var new_dirname=PATH.dirname(new_path);var old_name=PATH.basename(old_path);var new_name=PATH.basename(new_path);var lookup,old_dir,new_dir;lookup=FS.lookupPath(old_path,{parent:true});old_dir=lookup.node;lookup=FS.lookupPath(new_path,{parent:true});new_dir=lookup.node;if(!old_dir||!new_dir)throw new FS.ErrnoError(44);if(old_dir.mount!==new_dir.mount){throw new FS.ErrnoError(75)}var old_node=FS.lookupNode(old_dir,old_name);var relative=PATH_FS.relative(old_path,new_dirname);if(relative.charAt(0)!=="."){throw new FS.ErrnoError(28)}relative=PATH_FS.relative(new_path,old_dirname);if(relative.charAt(0)!=="."){throw new FS.ErrnoError(55)}var new_node;try{new_node=FS.lookupNode(new_dir,new_name)}catch(e){}if(old_node===new_node){return}var isdir=FS.isDir(old_node.mode);var errCode=FS.mayDelete(old_dir,old_name,isdir);if(errCode){throw new FS.ErrnoError(errCode)}errCode=new_node?FS.mayDelete(new_dir,new_name,isdir):FS.mayCreate(new_dir,new_name);if(errCode){throw new FS.ErrnoError(errCode)}if(!old_dir.node_ops.rename){throw new FS.ErrnoError(63)}if(FS.isMountpoint(old_node)||new_node&&FS.isMountpoint(new_node)){throw new FS.ErrnoError(10)}if(new_dir!==old_dir){errCode=FS.nodePermissions(old_dir,"w");if(errCode){throw new FS.ErrnoError(errCode)}}FS.hashRemoveNode(old_node);try{old_dir.node_ops.rename(old_node,new_dir,new_name)}catch(e){throw e}finally{FS.hashAddNode(old_node)}},rmdir:path=>{var lookup=FS.lookupPath(path,{parent:true});var parent=lookup.node;var name=PATH.basename(path);var node=FS.lookupNode(parent,name);var errCode=FS.mayDelete(parent,name,true);if(errCode){throw new FS.ErrnoError(errCode)}if(!parent.node_ops.rmdir){throw new FS.ErrnoError(63)}if(FS.isMountpoint(node)){throw new FS.ErrnoError(10)}parent.node_ops.rmdir(parent,name);FS.destroyNode(node)},readdir:path=>{var lookup=FS.lookupPath(path,{follow:true});var node=lookup.node;if(!node.node_ops.readdir){throw new FS.ErrnoError(54)}return node.node_ops.readdir(node)},unlink:path=>{var lookup=FS.lookupPath(path,{parent:true});var parent=lookup.node;if(!parent){throw new FS.ErrnoError(44)}var name=PATH.basename(path);var node=FS.lookupNode(parent,name);var errCode=FS.mayDelete(parent,name,false);if(errCode){throw new FS.ErrnoError(errCode)}if(!parent.node_ops.unlink){throw new FS.ErrnoError(63)}if(FS.isMountpoint(node)){throw new FS.ErrnoError(10)}parent.node_ops.unlink(parent,name);FS.destroyNode(node)},readlink:path=>{var lookup=FS.lookupPath(path);var link=lookup.node;if(!link){throw new FS.ErrnoError(44)}if(!link.node_ops.readlink){throw new FS.ErrnoError(28)}return PATH_FS.resolve(FS.getPath(link.parent),link.node_ops.readlink(link))},stat:(path,dontFollow)=>{var lookup=FS.lookupPath(path,{follow:!dontFollow});var node=lookup.node;if(!node){throw new FS.ErrnoError(44)}if(!node.node_ops.getattr){throw new FS.ErrnoError(63)}return node.node_ops.getattr(node)},lstat:path=>{return FS.stat(path,true)},chmod:(path,mode,dontFollow)=>{var node;if(typeof path=="string"){var lookup=FS.lookupPath(path,{follow:!dontFollow});node=lookup.node}else{node=path}if(!node.node_ops.setattr){throw new FS.ErrnoError(63)}node.node_ops.setattr(node,{mode:mode&4095|node.mode&~4095,timestamp:Date.now()})},lchmod:(path,mode)=>{FS.chmod(path,mode,true)},fchmod:(fd,mode)=>{var stream=FS.getStream(fd);if(!stream){throw new FS.ErrnoError(8)}FS.chmod(stream.node,mode)},chown:(path,uid,gid,dontFollow)=>{var node;if(typeof path=="string"){var lookup=FS.lookupPath(path,{follow:!dontFollow});node=lookup.node}else{node=path}if(!node.node_ops.setattr){throw new FS.ErrnoError(63)}node.node_ops.setattr(node,{timestamp:Date.now()})},lchown:(path,uid,gid)=>{FS.chown(path,uid,gid,true)},fchown:(fd,uid,gid)=>{var stream=FS.getStream(fd);if(!stream){throw new FS.ErrnoError(8)}FS.chown(stream.node,uid,gid)},truncate:(path,len)=>{if(len<0){throw new FS.ErrnoError(28)}var node;if(typeof path=="string"){var lookup=FS.lookupPath(path,{follow:true});node=lookup.node}else{node=path}if(!node.node_ops.setattr){throw new FS.ErrnoError(63)}if(FS.isDir(node.mode)){throw new FS.ErrnoError(31)}if(!FS.isFile(node.mode)){throw new FS.ErrnoError(28)}var errCode=FS.nodePermissions(node,"w");if(errCode){throw new FS.ErrnoError(errCode)}node.node_ops.setattr(node,{size:len,timestamp:Date.now()})},ftruncate:(fd,len)=>{var stream=FS.getStream(fd);if(!stream){throw new FS.ErrnoError(8)}if((stream.flags&2097155)===0){throw new FS.ErrnoError(28)}FS.truncate(stream.node,len)},utime:(path,atime,mtime)=>{var lookup=FS.lookupPath(path,{follow:true});var node=lookup.node;node.node_ops.setattr(node,{timestamp:Math.max(atime,mtime)})},open:(path,flags,mode)=>{if(path===""){throw new FS.ErrnoError(44)}flags=typeof flags=="string"?FS.modeStringToFlags(flags):flags;mode=typeof mode=="undefined"?438:mode;if(flags&64){mode=mode&4095|32768}else{mode=0}var node;if(typeof path=="object"){node=path}else{path=PATH.normalize(path);try{var lookup=FS.lookupPath(path,{follow:!(flags&131072)});node=lookup.node}catch(e){}}var created=false;if(flags&64){if(node){if(flags&128){throw new FS.ErrnoError(20)}}else{node=FS.mknod(path,mode,0);created=true}}if(!node){throw new FS.ErrnoError(44)}if(FS.isChrdev(node.mode)){flags&=~512}if(flags&65536&&!FS.isDir(node.mode)){throw new FS.ErrnoError(54)}if(!created){var errCode=FS.mayOpen(node,flags);if(errCode){throw new FS.ErrnoError(errCode)}}if(flags&512&&!created){FS.truncate(node,0)}flags&=~(128|512|131072);var stream=FS.createStream({node:node,path:FS.getPath(node),flags:flags,seekable:true,position:0,stream_ops:node.stream_ops,ungotten:[],error:false});if(stream.stream_ops.open){stream.stream_ops.open(stream)}if(Module["logReadFiles"]&&!(flags&1)){if(!FS.readFiles)FS.readFiles={};if(!(path in FS.readFiles)){FS.readFiles[path]=1}}return stream},close:stream=>{if(FS.isClosed(stream)){throw new FS.ErrnoError(8)}if(stream.getdents)stream.getdents=null;try{if(stream.stream_ops.close){stream.stream_ops.close(stream)}}catch(e){throw e}finally{FS.closeStream(stream.fd)}stream.fd=null},isClosed:stream=>{return stream.fd===null},llseek:(stream,offset,whence)=>{if(FS.isClosed(stream)){throw new FS.ErrnoError(8)}if(!stream.seekable||!stream.stream_ops.llseek){throw new FS.ErrnoError(70)}if(whence!=0&&whence!=1&&whence!=2){throw new FS.ErrnoError(28)}stream.position=stream.stream_ops.llseek(stream,offset,whence);stream.ungotten=[];return stream.position},read:(stream,buffer,offset,length,position)=>{if(length<0||position<0){throw new FS.ErrnoError(28)}if(FS.isClosed(stream)){throw new FS.ErrnoError(8)}if((stream.flags&2097155)===1){throw new FS.ErrnoError(8)}if(FS.isDir(stream.node.mode)){throw new FS.ErrnoError(31)}if(!stream.stream_ops.read){throw new FS.ErrnoError(28)}var seeking=typeof position!="undefined";if(!seeking){position=stream.position}else if(!stream.seekable){throw new FS.ErrnoError(70)}var bytesRead=stream.stream_ops.read(stream,buffer,offset,length,position);if(!seeking)stream.position+=bytesRead;return bytesRead},write:(stream,buffer,offset,length,position,canOwn)=>{if(length<0||position<0){throw new FS.ErrnoError(28)}if(FS.isClosed(stream)){throw new FS.ErrnoError(8)}if((stream.flags&2097155)===0){throw new FS.ErrnoError(8)}if(FS.isDir(stream.node.mode)){throw new FS.ErrnoError(31)}if(!stream.stream_ops.write){throw new FS.ErrnoError(28)}if(stream.seekable&&stream.flags&1024){FS.llseek(stream,0,2)}var seeking=typeof position!="undefined";if(!seeking){position=stream.position}else if(!stream.seekable){throw new FS.ErrnoError(70)}var bytesWritten=stream.stream_ops.write(stream,buffer,offset,length,position,canOwn);if(!seeking)stream.position+=bytesWritten;return bytesWritten},allocate:(stream,offset,length)=>{if(FS.isClosed(stream)){throw new FS.ErrnoError(8)}if(offset<0||length<=0){throw new FS.ErrnoError(28)}if((stream.flags&2097155)===0){throw new FS.ErrnoError(8)}if(!FS.isFile(stream.node.mode)&&!FS.isDir(stream.node.mode)){throw new FS.ErrnoError(43)}if(!stream.stream_ops.allocate){throw new FS.ErrnoError(138)}stream.stream_ops.allocate(stream,offset,length)},mmap:(stream,length,position,prot,flags)=>{if((prot&2)!==0&&(flags&2)===0&&(stream.flags&2097155)!==2){throw new FS.ErrnoError(2)}if((stream.flags&2097155)===1){throw new FS.ErrnoError(2)}if(!stream.stream_ops.mmap){throw new FS.ErrnoError(43)}return stream.stream_ops.mmap(stream,length,position,prot,flags)},msync:(stream,buffer,offset,length,mmapFlags)=>{if(!stream.stream_ops.msync){return 0}return stream.stream_ops.msync(stream,buffer,offset,length,mmapFlags)},munmap:stream=>0,ioctl:(stream,cmd,arg)=>{if(!stream.stream_ops.ioctl){throw new FS.ErrnoError(59)}return stream.stream_ops.ioctl(stream,cmd,arg)},readFile:(path,opts={})=>{opts.flags=opts.flags||0;opts.encoding=opts.encoding||"binary";if(opts.encoding!=="utf8"&&opts.encoding!=="binary"){throw new Error('Invalid encoding type "'+opts.encoding+'"')}var ret;var stream=FS.open(path,opts.flags);var stat=FS.stat(path);var length=stat.size;var buf=new Uint8Array(length);FS.read(stream,buf,0,length,0);if(opts.encoding==="utf8"){ret=UTF8ArrayToString(buf,0)}else if(opts.encoding==="binary"){ret=buf}FS.close(stream);return ret},writeFile:(path,data,opts={})=>{opts.flags=opts.flags||577;var stream=FS.open(path,opts.flags,opts.mode);if(typeof data=="string"){var buf=new Uint8Array(lengthBytesUTF8(data)+1);var actualNumBytes=stringToUTF8Array(data,buf,0,buf.length);FS.write(stream,buf,0,actualNumBytes,undefined,opts.canOwn)}else if(ArrayBuffer.isView(data)){FS.write(stream,data,0,data.byteLength,undefined,opts.canOwn)}else{throw new Error("Unsupported data type")}FS.close(stream)},cwd:()=>FS.currentPath,chdir:path=>{var lookup=FS.lookupPath(path,{follow:true});if(lookup.node===null){throw new FS.ErrnoError(44)}if(!FS.isDir(lookup.node.mode)){throw new FS.ErrnoError(54)}var errCode=FS.nodePermissions(lookup.node,"x");if(errCode){throw new FS.ErrnoError(errCode)}FS.currentPath=lookup.path},createDefaultDirectories:()=>{FS.mkdir("/tmp");FS.mkdir("/home");FS.mkdir("/home/web_user")},createDefaultDevices:()=>{FS.mkdir("/dev");FS.registerDevice(FS.makedev(1,3),{read:()=>0,write:(stream,buffer,offset,length,pos)=>length});FS.mkdev("/dev/null",FS.makedev(1,3));TTY.register(FS.makedev(5,0),TTY.default_tty_ops);TTY.register(FS.makedev(6,0),TTY.default_tty1_ops);FS.mkdev("/dev/tty",FS.makedev(5,0));FS.mkdev("/dev/tty1",FS.makedev(6,0));var random_device=getRandomDevice();FS.createDevice("/dev","random",random_device);FS.createDevice("/dev","urandom",random_device);FS.mkdir("/dev/shm");FS.mkdir("/dev/shm/tmp")},createSpecialDirectories:()=>{FS.mkdir("/proc");var proc_self=FS.mkdir("/proc/self");FS.mkdir("/proc/self/fd");FS.mount({mount:()=>{var node=FS.createNode(proc_self,"fd",16384|511,73);node.node_ops={lookup:(parent,name)=>{var fd=+name;var stream=FS.getStream(fd);if(!stream)throw new FS.ErrnoError(8);var ret={parent:null,mount:{mountpoint:"fake"},node_ops:{readlink:()=>stream.path}};ret.parent=ret;return ret}};return node}},{},"/proc/self/fd")},createStandardStreams:()=>{if(Module["stdin"]){FS.createDevice("/dev","stdin",Module["stdin"])}else{FS.symlink("/dev/tty","/dev/stdin")}if(Module["stdout"]){FS.createDevice("/dev","stdout",null,Module["stdout"])}else{FS.symlink("/dev/tty","/dev/stdout")}if(Module["stderr"]){FS.createDevice("/dev","stderr",null,Module["stderr"])}else{FS.symlink("/dev/tty1","/dev/stderr")}var stdin=FS.open("/dev/stdin",0);var stdout=FS.open("/dev/stdout",1);var stderr=FS.open("/dev/stderr",1)},ensureErrnoError:()=>{if(FS.ErrnoError)return;FS.ErrnoError=function ErrnoError(errno,node){this.node=node;this.setErrno=function(errno){this.errno=errno};this.setErrno(errno);this.message="FS error"};FS.ErrnoError.prototype=new Error;FS.ErrnoError.prototype.constructor=FS.ErrnoError;[44].forEach(code=>{FS.genericErrors[code]=new FS.ErrnoError(code);FS.genericErrors[code].stack=""})},staticInit:()=>{FS.ensureErrnoError();FS.nameTable=new Array(4096);FS.mount(MEMFS,{},"/");FS.createDefaultDirectories();FS.createDefaultDevices();FS.createSpecialDirectories();FS.filesystems={"MEMFS":MEMFS}},init:(input,output,error)=>{FS.init.initialized=true;FS.ensureErrnoError();Module["stdin"]=input||Module["stdin"];Module["stdout"]=output||Module["stdout"];Module["stderr"]=error||Module["stderr"];FS.createStandardStreams()},quit:()=>{FS.init.initialized=false;for(var i=0;i{var mode=0;if(canRead)mode|=292|73;if(canWrite)mode|=146;return mode},findObject:(path,dontResolveLastLink)=>{var ret=FS.analyzePath(path,dontResolveLastLink);if(!ret.exists){return null}return ret.object},analyzePath:(path,dontResolveLastLink)=>{try{var lookup=FS.lookupPath(path,{follow:!dontResolveLastLink});path=lookup.path}catch(e){}var ret={isRoot:false,exists:false,error:0,name:null,path:null,object:null,parentExists:false,parentPath:null,parentObject:null};try{var lookup=FS.lookupPath(path,{parent:true});ret.parentExists=true;ret.parentPath=lookup.path;ret.parentObject=lookup.node;ret.name=PATH.basename(path);lookup=FS.lookupPath(path,{follow:!dontResolveLastLink});ret.exists=true;ret.path=lookup.path;ret.object=lookup.node;ret.name=lookup.node.name;ret.isRoot=lookup.path==="/"}catch(e){ret.error=e.errno}return ret},createPath:(parent,path,canRead,canWrite)=>{parent=typeof parent=="string"?parent:FS.getPath(parent);var parts=path.split("/").reverse();while(parts.length){var part=parts.pop();if(!part)continue;var current=PATH.join2(parent,part);try{FS.mkdir(current)}catch(e){}parent=current}return current},createFile:(parent,name,properties,canRead,canWrite)=>{var path=PATH.join2(typeof parent=="string"?parent:FS.getPath(parent),name);var mode=FS.getMode(canRead,canWrite);return FS.create(path,mode)},createDataFile:(parent,name,data,canRead,canWrite,canOwn)=>{var path=name;if(parent){parent=typeof parent=="string"?parent:FS.getPath(parent);path=name?PATH.join2(parent,name):parent}var mode=FS.getMode(canRead,canWrite);var node=FS.create(path,mode);if(data){if(typeof data=="string"){var arr=new Array(data.length);for(var i=0,len=data.length;i{var path=PATH.join2(typeof parent=="string"?parent:FS.getPath(parent),name);var mode=FS.getMode(!!input,!!output);if(!FS.createDevice.major)FS.createDevice.major=64;var dev=FS.makedev(FS.createDevice.major++,0);FS.registerDevice(dev,{open:stream=>{stream.seekable=false},close:stream=>{if(output&&output.buffer&&output.buffer.length){output(10)}},read:(stream,buffer,offset,length,pos)=>{var bytesRead=0;for(var i=0;i{for(var i=0;i{if(obj.isDevice||obj.isFolder||obj.link||obj.contents)return true;if(typeof XMLHttpRequest!="undefined"){throw new Error("Lazy loading should have been performed (contents set) in createLazyFile, but it was not. Lazy loading only works in web workers. Use --embed-file or --preload-file in emcc on the main thread.")}else if(read_){try{obj.contents=intArrayFromString(read_(obj.url),true);obj.usedBytes=obj.contents.length}catch(e){throw new FS.ErrnoError(29)}}else{throw new Error("Cannot load without read() or XMLHttpRequest.")}},createLazyFile:(parent,name,url,canRead,canWrite)=>{function LazyUint8Array(){this.lengthKnown=false;this.chunks=[]}LazyUint8Array.prototype.get=function LazyUint8Array_get(idx){if(idx>this.length-1||idx<0){return undefined}var chunkOffset=idx%this.chunkSize;var chunkNum=idx/this.chunkSize|0;return this.getter(chunkNum)[chunkOffset]};LazyUint8Array.prototype.setDataGetter=function LazyUint8Array_setDataGetter(getter){this.getter=getter};LazyUint8Array.prototype.cacheLength=function LazyUint8Array_cacheLength(){var xhr=new XMLHttpRequest;xhr.open("HEAD",url,false);xhr.send(null);if(!(xhr.status>=200&&xhr.status<300||xhr.status===304))throw new Error("Couldn't load "+url+". Status: "+xhr.status);var datalength=Number(xhr.getResponseHeader("Content-length"));var header;var hasByteServing=(header=xhr.getResponseHeader("Accept-Ranges"))&&header==="bytes";var usesGzip=(header=xhr.getResponseHeader("Content-Encoding"))&&header==="gzip";var chunkSize=1024*1024;if(!hasByteServing)chunkSize=datalength;var doXHR=(from,to)=>{if(from>to)throw new Error("invalid range ("+from+", "+to+") or no bytes requested!");if(to>datalength-1)throw new Error("only "+datalength+" bytes available! programmer error!");var xhr=new XMLHttpRequest;xhr.open("GET",url,false);if(datalength!==chunkSize)xhr.setRequestHeader("Range","bytes="+from+"-"+to);xhr.responseType="arraybuffer";if(xhr.overrideMimeType){xhr.overrideMimeType("text/plain; charset=x-user-defined")}xhr.send(null);if(!(xhr.status>=200&&xhr.status<300||xhr.status===304))throw new Error("Couldn't load "+url+". Status: "+xhr.status);if(xhr.response!==undefined){return new Uint8Array(xhr.response||[])}return intArrayFromString(xhr.responseText||"",true)};var lazyArray=this;lazyArray.setDataGetter(chunkNum=>{var start=chunkNum*chunkSize;var end=(chunkNum+1)*chunkSize-1;end=Math.min(end,datalength-1);if(typeof lazyArray.chunks[chunkNum]=="undefined"){lazyArray.chunks[chunkNum]=doXHR(start,end)}if(typeof lazyArray.chunks[chunkNum]=="undefined")throw new Error("doXHR failed!");return lazyArray.chunks[chunkNum]});if(usesGzip||!datalength){chunkSize=datalength=1;datalength=this.getter(0).length;chunkSize=datalength;out("LazyFiles on gzip forces download of the whole file when length is accessed")}this._length=datalength;this._chunkSize=chunkSize;this.lengthKnown=true};if(typeof XMLHttpRequest!="undefined"){if(!ENVIRONMENT_IS_WORKER)throw"Cannot do synchronous binary XHRs outside webworkers in modern browsers. Use --embed-file or --preload-file in emcc";var lazyArray=new LazyUint8Array;Object.defineProperties(lazyArray,{length:{get:function(){if(!this.lengthKnown){this.cacheLength()}return this._length}},chunkSize:{get:function(){if(!this.lengthKnown){this.cacheLength()}return this._chunkSize}}});var properties={isDevice:false,contents:lazyArray}}else{var properties={isDevice:false,url:url}}var node=FS.createFile(parent,name,properties,canRead,canWrite);if(properties.contents){node.contents=properties.contents}else if(properties.url){node.contents=null;node.url=properties.url}Object.defineProperties(node,{usedBytes:{get:function(){return this.contents.length}}});var stream_ops={};var keys=Object.keys(node.stream_ops);keys.forEach(key=>{var fn=node.stream_ops[key];stream_ops[key]=function forceLoadLazyFile(){FS.forceLoadFile(node);return fn.apply(null,arguments)}});function writeChunks(stream,buffer,offset,length,position){var contents=stream.node.contents;if(position>=contents.length)return 0;var size=Math.min(contents.length-position,length);if(contents.slice){for(var i=0;i{FS.forceLoadFile(node);return writeChunks(stream,buffer,offset,length,position)};stream_ops.mmap=(stream,length,position,prot,flags)=>{FS.forceLoadFile(node);var ptr=mmapAlloc(length);if(!ptr){throw new FS.ErrnoError(48)}writeChunks(stream,HEAP8,ptr,length,position);return{ptr:ptr,allocated:true}};node.stream_ops=stream_ops;return node},createPreloadedFile:(parent,name,url,canRead,canWrite,onload,onerror,dontCreateFile,canOwn,preFinish)=>{var fullname=name?PATH_FS.resolve(PATH.join2(parent,name)):parent;var dep=getUniqueRunDependency("cp "+fullname);function processData(byteArray){function finish(byteArray){if(preFinish)preFinish();if(!dontCreateFile){FS.createDataFile(parent,name,byteArray,canRead,canWrite,canOwn)}if(onload)onload();removeRunDependency(dep)}if(Browser.handledByPreloadPlugin(byteArray,fullname,finish,()=>{if(onerror)onerror();removeRunDependency(dep)})){return}finish(byteArray)}addRunDependency(dep);if(typeof url=="string"){asyncLoad(url,byteArray=>processData(byteArray),onerror)}else{processData(url)}},indexedDB:()=>{return window.indexedDB||window.mozIndexedDB||window.webkitIndexedDB||window.msIndexedDB},DB_NAME:()=>{return"EM_FS_"+window.location.pathname},DB_VERSION:20,DB_STORE_NAME:"FILE_DATA",saveFilesToDB:(paths,onload,onerror)=>{onload=onload||(()=>{});onerror=onerror||(()=>{});var indexedDB=FS.indexedDB();try{var openRequest=indexedDB.open(FS.DB_NAME(),FS.DB_VERSION)}catch(e){return onerror(e)}openRequest.onupgradeneeded=()=>{out("creating db");var db=openRequest.result;db.createObjectStore(FS.DB_STORE_NAME)};openRequest.onsuccess=()=>{var db=openRequest.result;var transaction=db.transaction([FS.DB_STORE_NAME],"readwrite");var files=transaction.objectStore(FS.DB_STORE_NAME);var ok=0,fail=0,total=paths.length;function finish(){if(fail==0)onload();else onerror()}paths.forEach(path=>{var putRequest=files.put(FS.analyzePath(path).object.contents,path);putRequest.onsuccess=()=>{ok++;if(ok+fail==total)finish()};putRequest.onerror=()=>{fail++;if(ok+fail==total)finish()}});transaction.onerror=onerror};openRequest.onerror=onerror},loadFilesFromDB:(paths,onload,onerror)=>{onload=onload||(()=>{});onerror=onerror||(()=>{});var indexedDB=FS.indexedDB();try{var openRequest=indexedDB.open(FS.DB_NAME(),FS.DB_VERSION)}catch(e){return onerror(e)}openRequest.onupgradeneeded=onerror;openRequest.onsuccess=()=>{var db=openRequest.result;try{var transaction=db.transaction([FS.DB_STORE_NAME],"readonly")}catch(e){onerror(e);return}var files=transaction.objectStore(FS.DB_STORE_NAME);var ok=0,fail=0,total=paths.length;function finish(){if(fail==0)onload();else onerror()}paths.forEach(path=>{var getRequest=files.get(path);getRequest.onsuccess=()=>{if(FS.analyzePath(path).exists){FS.unlink(path)}FS.createDataFile(PATH.dirname(path),PATH.basename(path),getRequest.result,true,true,true);ok++;if(ok+fail==total)finish()};getRequest.onerror=()=>{fail++;if(ok+fail==total)finish()}});transaction.onerror=onerror};openRequest.onerror=onerror}};var SYSCALLS={DEFAULT_POLLMASK:5,calculateAt:function(dirfd,path,allowEmpty){if(PATH.isAbs(path)){return path}var dir;if(dirfd===-100){dir=FS.cwd()}else{var dirstream=SYSCALLS.getStreamFromFD(dirfd);dir=dirstream.path}if(path.length==0){if(!allowEmpty){throw new FS.ErrnoError(44)}return dir}return PATH.join2(dir,path)},doStat:function(func,path,buf){try{var stat=func(path)}catch(e){if(e&&e.node&&PATH.normalize(path)!==PATH.normalize(FS.getPath(e.node))){return-54}throw e}HEAP32[buf>>2]=stat.dev;HEAP32[buf+8>>2]=stat.ino;HEAP32[buf+12>>2]=stat.mode;HEAPU32[buf+16>>2]=stat.nlink;HEAP32[buf+20>>2]=stat.uid;HEAP32[buf+24>>2]=stat.gid;HEAP32[buf+28>>2]=stat.rdev;tempI64=[stat.size>>>0,(tempDouble=stat.size,+Math.abs(tempDouble)>=1?tempDouble>0?(Math.min(+Math.floor(tempDouble/4294967296),4294967295)|0)>>>0:~~+Math.ceil((tempDouble-+(~~tempDouble>>>0))/4294967296)>>>0:0)],HEAP32[buf+40>>2]=tempI64[0],HEAP32[buf+44>>2]=tempI64[1];HEAP32[buf+48>>2]=4096;HEAP32[buf+52>>2]=stat.blocks;tempI64=[Math.floor(stat.atime.getTime()/1e3)>>>0,(tempDouble=Math.floor(stat.atime.getTime()/1e3),+Math.abs(tempDouble)>=1?tempDouble>0?(Math.min(+Math.floor(tempDouble/4294967296),4294967295)|0)>>>0:~~+Math.ceil((tempDouble-+(~~tempDouble>>>0))/4294967296)>>>0:0)],HEAP32[buf+56>>2]=tempI64[0],HEAP32[buf+60>>2]=tempI64[1];HEAPU32[buf+64>>2]=0;tempI64=[Math.floor(stat.mtime.getTime()/1e3)>>>0,(tempDouble=Math.floor(stat.mtime.getTime()/1e3),+Math.abs(tempDouble)>=1?tempDouble>0?(Math.min(+Math.floor(tempDouble/4294967296),4294967295)|0)>>>0:~~+Math.ceil((tempDouble-+(~~tempDouble>>>0))/4294967296)>>>0:0)],HEAP32[buf+72>>2]=tempI64[0],HEAP32[buf+76>>2]=tempI64[1];HEAPU32[buf+80>>2]=0;tempI64=[Math.floor(stat.ctime.getTime()/1e3)>>>0,(tempDouble=Math.floor(stat.ctime.getTime()/1e3),+Math.abs(tempDouble)>=1?tempDouble>0?(Math.min(+Math.floor(tempDouble/4294967296),4294967295)|0)>>>0:~~+Math.ceil((tempDouble-+(~~tempDouble>>>0))/4294967296)>>>0:0)],HEAP32[buf+88>>2]=tempI64[0],HEAP32[buf+92>>2]=tempI64[1];HEAPU32[buf+96>>2]=0;tempI64=[stat.ino>>>0,(tempDouble=stat.ino,+Math.abs(tempDouble)>=1?tempDouble>0?(Math.min(+Math.floor(tempDouble/4294967296),4294967295)|0)>>>0:~~+Math.ceil((tempDouble-+(~~tempDouble>>>0))/4294967296)>>>0:0)],HEAP32[buf+104>>2]=tempI64[0],HEAP32[buf+108>>2]=tempI64[1];return 0},doMsync:function(addr,stream,len,flags,offset){if(!FS.isFile(stream.node.mode)){throw new FS.ErrnoError(43)}if(flags&2){return 0}var buffer=HEAPU8.slice(addr,addr+len);FS.msync(stream,buffer,offset,len,flags)},varargs:undefined,get:function(){SYSCALLS.varargs+=4;var ret=HEAP32[SYSCALLS.varargs-4>>2];return ret},getStr:function(ptr){var ret=UTF8ToString(ptr);return ret},getStreamFromFD:function(fd){var stream=FS.getStream(fd);if(!stream)throw new FS.ErrnoError(8);return stream}};function ___syscall__newselect(nfds,readfds,writefds,exceptfds,timeout){try{var total=0;var srcReadLow=readfds?HEAP32[readfds>>2]:0,srcReadHigh=readfds?HEAP32[readfds+4>>2]:0;var srcWriteLow=writefds?HEAP32[writefds>>2]:0,srcWriteHigh=writefds?HEAP32[writefds+4>>2]:0;var srcExceptLow=exceptfds?HEAP32[exceptfds>>2]:0,srcExceptHigh=exceptfds?HEAP32[exceptfds+4>>2]:0;var dstReadLow=0,dstReadHigh=0;var dstWriteLow=0,dstWriteHigh=0;var dstExceptLow=0,dstExceptHigh=0;var allLow=(readfds?HEAP32[readfds>>2]:0)|(writefds?HEAP32[writefds>>2]:0)|(exceptfds?HEAP32[exceptfds>>2]:0);var allHigh=(readfds?HEAP32[readfds+4>>2]:0)|(writefds?HEAP32[writefds+4>>2]:0)|(exceptfds?HEAP32[exceptfds+4>>2]:0);var check=function(fd,low,high,val){return fd<32?low&val:high&val};for(var fd=0;fd>2]=dstReadLow;HEAP32[readfds+4>>2]=dstReadHigh}if(writefds){HEAP32[writefds>>2]=dstWriteLow;HEAP32[writefds+4>>2]=dstWriteHigh}if(exceptfds){HEAP32[exceptfds>>2]=dstExceptLow;HEAP32[exceptfds+4>>2]=dstExceptHigh}return total}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}var SOCKFS={mount:function(mount){Module["websocket"]=Module["websocket"]&&"object"===typeof Module["websocket"]?Module["websocket"]:{};Module["websocket"]._callbacks={};Module["websocket"]["on"]=function(event,callback){if("function"===typeof callback){this._callbacks[event]=callback}return this};Module["websocket"].emit=function(event,param){if("function"===typeof this._callbacks[event]){this._callbacks[event].call(this,param)}};return FS.createNode(null,"/",16384|511,0)},createSocket:function(family,type,protocol){type&=~526336;var streaming=type==1;if(streaming&&protocol&&protocol!=6){throw new FS.ErrnoError(66)}var sock={family:family,type:type,protocol:protocol,server:null,error:null,peers:{},pending:[],recv_queue:[],sock_ops:SOCKFS.websocket_sock_ops};var name=SOCKFS.nextname();var node=FS.createNode(SOCKFS.root,name,49152,0);node.sock=sock;var stream=FS.createStream({path:name,node:node,flags:2,seekable:false,stream_ops:SOCKFS.stream_ops});sock.stream=stream;return sock},getSocket:function(fd){var stream=FS.getStream(fd);if(!stream||!FS.isSocket(stream.node.mode)){return null}return stream.node.sock},stream_ops:{poll:function(stream){var sock=stream.node.sock;return sock.sock_ops.poll(sock)},ioctl:function(stream,request,varargs){var sock=stream.node.sock;return sock.sock_ops.ioctl(sock,request,varargs)},read:function(stream,buffer,offset,length,position){var sock=stream.node.sock;var msg=sock.sock_ops.recvmsg(sock,length);if(!msg){return 0}buffer.set(msg.buffer,offset);return msg.buffer.length},write:function(stream,buffer,offset,length,position){var sock=stream.node.sock;return sock.sock_ops.sendmsg(sock,buffer,offset,length)},close:function(stream){var sock=stream.node.sock;sock.sock_ops.close(sock)}},nextname:function(){if(!SOCKFS.nextname.current){SOCKFS.nextname.current=0}return"socket["+SOCKFS.nextname.current+++"]"},websocket_sock_ops:{createPeer:function(sock,addr,port){var ws;if(typeof addr=="object"){ws=addr;addr=null;port=null}if(ws){if(ws._socket){addr=ws._socket.remoteAddress;port=ws._socket.remotePort}else{var result=/ws[s]?:\/\/([^:]+):(\d+)/.exec(ws.url);if(!result){throw new Error("WebSocket URL must be in the format ws(s)://address:port")}addr=result[1];port=parseInt(result[2],10)}}else{try{var runtimeConfig=Module["websocket"]&&"object"===typeof Module["websocket"];var url="ws:#".replace("#","//");if(runtimeConfig){if("string"===typeof Module["websocket"]["url"]){url=Module["websocket"]["url"]}}if(url==="ws://"||url==="wss://"){var parts=addr.split("/");url=url+parts[0]+":"+port+"/"+parts.slice(1).join("/")}var subProtocols="binary";if(runtimeConfig){if("string"===typeof Module["websocket"]["subprotocol"]){subProtocols=Module["websocket"]["subprotocol"]}}var opts=undefined;if(subProtocols!=="null"){subProtocols=subProtocols.replace(/^ +| +$/g,"").split(/ *, */);opts=subProtocols}if(runtimeConfig&&null===Module["websocket"]["subprotocol"]){subProtocols="null";opts=undefined}var WebSocketConstructor;{WebSocketConstructor=WebSocket}ws=new WebSocketConstructor(url,opts);ws.binaryType="arraybuffer"}catch(e){throw new FS.ErrnoError(23)}}var peer={addr:addr,port:port,socket:ws,dgram_send_queue:[]};SOCKFS.websocket_sock_ops.addPeer(sock,peer);SOCKFS.websocket_sock_ops.handlePeerEvents(sock,peer);if(sock.type===2&&typeof sock.sport!="undefined"){peer.dgram_send_queue.push(new Uint8Array([255,255,255,255,"p".charCodeAt(0),"o".charCodeAt(0),"r".charCodeAt(0),"t".charCodeAt(0),(sock.sport&65280)>>8,sock.sport&255]))}return peer},getPeer:function(sock,addr,port){return sock.peers[addr+":"+port]},addPeer:function(sock,peer){sock.peers[peer.addr+":"+peer.port]=peer},removePeer:function(sock,peer){delete sock.peers[peer.addr+":"+peer.port]},handlePeerEvents:function(sock,peer){var first=true;var handleOpen=function(){Module["websocket"].emit("open",sock.stream.fd);try{var queued=peer.dgram_send_queue.shift();while(queued){peer.socket.send(queued);queued=peer.dgram_send_queue.shift()}}catch(e){peer.socket.close()}};function handleMessage(data){if(typeof data=="string"){var encoder=new TextEncoder;data=encoder.encode(data)}else{assert(data.byteLength!==undefined);if(data.byteLength==0){return}data=new Uint8Array(data)}var wasfirst=first;first=false;if(wasfirst&&data.length===10&&data[0]===255&&data[1]===255&&data[2]===255&&data[3]===255&&data[4]==="p".charCodeAt(0)&&data[5]==="o".charCodeAt(0)&&data[6]==="r".charCodeAt(0)&&data[7]==="t".charCodeAt(0)){var newport=data[8]<<8|data[9];SOCKFS.websocket_sock_ops.removePeer(sock,peer);peer.port=newport;SOCKFS.websocket_sock_ops.addPeer(sock,peer);return}sock.recv_queue.push({addr:peer.addr,port:peer.port,data:data});Module["websocket"].emit("message",sock.stream.fd)}if(ENVIRONMENT_IS_NODE){peer.socket.on("open",handleOpen);peer.socket.on("message",function(data,isBinary){if(!isBinary){return}handleMessage(new Uint8Array(data).buffer)});peer.socket.on("close",function(){Module["websocket"].emit("close",sock.stream.fd)});peer.socket.on("error",function(error){sock.error=14;Module["websocket"].emit("error",[sock.stream.fd,sock.error,"ECONNREFUSED: Connection refused"])})}else{peer.socket.onopen=handleOpen;peer.socket.onclose=function(){Module["websocket"].emit("close",sock.stream.fd)};peer.socket.onmessage=function peer_socket_onmessage(event){handleMessage(event.data)};peer.socket.onerror=function(error){sock.error=14;Module["websocket"].emit("error",[sock.stream.fd,sock.error,"ECONNREFUSED: Connection refused"])}}},poll:function(sock){if(sock.type===1&&sock.server){return sock.pending.length?64|1:0}var mask=0;var dest=sock.type===1?SOCKFS.websocket_sock_ops.getPeer(sock,sock.daddr,sock.dport):null;if(sock.recv_queue.length||!dest||dest&&dest.socket.readyState===dest.socket.CLOSING||dest&&dest.socket.readyState===dest.socket.CLOSED){mask|=64|1}if(!dest||dest&&dest.socket.readyState===dest.socket.OPEN){mask|=4}if(dest&&dest.socket.readyState===dest.socket.CLOSING||dest&&dest.socket.readyState===dest.socket.CLOSED){mask|=16}return mask},ioctl:function(sock,request,arg){switch(request){case 21531:var bytes=0;if(sock.recv_queue.length){bytes=sock.recv_queue[0].data.length}HEAP32[arg>>2]=bytes;return 0;default:return 28}},close:function(sock){if(sock.server){try{sock.server.close()}catch(e){}sock.server=null}var peers=Object.keys(sock.peers);for(var i=0;i>2]=value;return value}function inetPton4(str){var b=str.split(".");for(var i=0;i<4;i++){var tmp=Number(b[i]);if(isNaN(tmp))return null;b[i]=tmp}return(b[0]|b[1]<<8|b[2]<<16|b[3]<<24)>>>0}function jstoi_q(str){return parseInt(str)}function inetPton6(str){var words;var w,offset,z;var valid6regx=/^((?=.*::)(?!.*::.+::)(::)?([\dA-F]{1,4}:(:|\b)|){5}|([\dA-F]{1,4}:){6})((([\dA-F]{1,4}((?!\3)::|:\b|$))|(?!\2\3)){2}|(((2[0-4]|1\d|[1-9])?\d|25[0-5])\.?\b){4})$/i;var parts=[];if(!valid6regx.test(str)){return null}if(str==="::"){return[0,0,0,0,0,0,0,0]}if(str.startsWith("::")){str=str.replace("::","Z:")}else{str=str.replace("::",":Z:")}if(str.indexOf(".")>0){str=str.replace(new RegExp("[.]","g"),":");words=str.split(":");words[words.length-4]=jstoi_q(words[words.length-4])+jstoi_q(words[words.length-3])*256;words[words.length-3]=jstoi_q(words[words.length-2])+jstoi_q(words[words.length-1])*256;words=words.slice(0,words.length-2)}else{words=str.split(":")}offset=0;z=0;for(w=0;w>2]=16}HEAP16[sa>>1]=family;HEAP32[sa+4>>2]=addr;HEAP16[sa+2>>1]=_htons(port);break;case 10:addr=inetPton6(addr);zeroMemory(sa,28);if(addrlen){HEAP32[addrlen>>2]=28}HEAP32[sa>>2]=family;HEAP32[sa+8>>2]=addr[0];HEAP32[sa+12>>2]=addr[1];HEAP32[sa+16>>2]=addr[2];HEAP32[sa+20>>2]=addr[3];HEAP16[sa+2>>1]=_htons(port);break;default:return 5}return 0}var DNS={address_map:{id:1,addrs:{},names:{}},lookup_name:function(name){var res=inetPton4(name);if(res!==null){return name}res=inetPton6(name);if(res!==null){return name}var addr;if(DNS.address_map.addrs[name]){addr=DNS.address_map.addrs[name]}else{var id=DNS.address_map.id++;assert(id<65535,"exceeded max address mappings of 65535");addr="172.29."+(id&255)+"."+(id&65280);DNS.address_map.names[addr]=name;DNS.address_map.addrs[name]=addr}return addr},lookup_addr:function(addr){if(DNS.address_map.names[addr]){return DNS.address_map.names[addr]}return null}};function ___syscall_accept4(fd,addr,addrlen,flags){try{var sock=getSocketFromFD(fd);var newsock=sock.sock_ops.accept(sock);if(addr){var errno=writeSockaddr(addr,newsock.family,DNS.lookup_name(newsock.daddr),newsock.dport,addrlen)}return newsock.stream.fd}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function inetNtop4(addr){return(addr&255)+"."+(addr>>8&255)+"."+(addr>>16&255)+"."+(addr>>24&255)}function inetNtop6(ints){var str="";var word=0;var longest=0;var lastzero=0;var zstart=0;var len=0;var i=0;var parts=[ints[0]&65535,ints[0]>>16,ints[1]&65535,ints[1]>>16,ints[2]&65535,ints[2]>>16,ints[3]&65535,ints[3]>>16];var hasipv4=true;var v4part="";for(i=0;i<5;i++){if(parts[i]!==0){hasipv4=false;break}}if(hasipv4){v4part=inetNtop4(parts[6]|parts[7]<<16);if(parts[5]===-1){str="::ffff:";str+=v4part;return str}if(parts[5]===0){str="::";if(v4part==="0.0.0.0")v4part="";if(v4part==="0.0.0.1")v4part="1";str+=v4part;return str}}for(word=0;word<8;word++){if(parts[word]===0){if(word-lastzero>1){len=0}lastzero=word;len++}if(len>longest){longest=len;zstart=word-longest+1}}for(word=0;word<8;word++){if(longest>1){if(parts[word]===0&&word>=zstart&&word>1];var port=_ntohs(HEAPU16[sa+2>>1]);var addr;switch(family){case 2:if(salen!==16){return{errno:28}}addr=HEAP32[sa+4>>2];addr=inetNtop4(addr);break;case 10:if(salen!==28){return{errno:28}}addr=[HEAP32[sa+8>>2],HEAP32[sa+12>>2],HEAP32[sa+16>>2],HEAP32[sa+20>>2]];addr=inetNtop6(addr);break;default:return{errno:5}}return{family:family,addr:addr,port:port}}function getSocketAddress(addrp,addrlen,allowNull){if(allowNull&&addrp===0)return null;var info=readSockaddr(addrp,addrlen);if(info.errno)throw new FS.ErrnoError(info.errno);info.addr=DNS.lookup_addr(info.addr)||info.addr;return info}function ___syscall_bind(fd,addr,addrlen){try{var sock=getSocketFromFD(fd);var info=getSocketAddress(addr,addrlen);sock.sock_ops.bind(sock,info.addr,info.port);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_chdir(path){try{path=SYSCALLS.getStr(path);FS.chdir(path);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_chmod(path,mode){try{path=SYSCALLS.getStr(path);FS.chmod(path,mode);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_connect(fd,addr,addrlen){try{var sock=getSocketFromFD(fd);var info=getSocketAddress(addr,addrlen);sock.sock_ops.connect(sock,info.addr,info.port);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_dup(fd){try{var old=SYSCALLS.getStreamFromFD(fd);return FS.createStream(old,0).fd}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_faccessat(dirfd,path,amode,flags){try{path=SYSCALLS.getStr(path);path=SYSCALLS.calculateAt(dirfd,path);if(amode&~7){return-28}var lookup=FS.lookupPath(path,{follow:true});var node=lookup.node;if(!node){return-44}var perms="";if(amode&4)perms+="r";if(amode&2)perms+="w";if(amode&1)perms+="x";if(perms&&FS.nodePermissions(node,perms)){return-2}return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_fchmod(fd,mode){try{FS.fchmod(fd,mode);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_fchown32(fd,owner,group){try{FS.fchown(fd,owner,group);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_fchownat(dirfd,path,owner,group,flags){try{path=SYSCALLS.getStr(path);var nofollow=flags&256;flags=flags&~256;path=SYSCALLS.calculateAt(dirfd,path);(nofollow?FS.lchown:FS.chown)(path,owner,group);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_fcntl64(fd,cmd,varargs){SYSCALLS.varargs=varargs;try{var stream=SYSCALLS.getStreamFromFD(fd);switch(cmd){case 0:{var arg=SYSCALLS.get();if(arg<0){return-28}var newStream;newStream=FS.createStream(stream,arg);return newStream.fd}case 1:case 2:return 0;case 3:return stream.flags;case 4:{var arg=SYSCALLS.get();stream.flags|=arg;return 0}case 5:{var arg=SYSCALLS.get();var offset=0;HEAP16[arg+offset>>1]=2;return 0}case 6:case 7:return 0;case 16:case 8:return-28;case 9:setErrNo(28);return-1;default:{return-28}}}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_fstat64(fd,buf){try{var stream=SYSCALLS.getStreamFromFD(fd);return SYSCALLS.doStat(FS.stat,stream.path,buf)}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function convertI32PairToI53Checked(lo,hi){return hi+2097152>>>0<4194305-!!lo?(lo>>>0)+hi*4294967296:NaN}function ___syscall_ftruncate64(fd,length_low,length_high){try{var length=convertI32PairToI53Checked(length_low,length_high);if(isNaN(length))return-61;FS.ftruncate(fd,length);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_getcwd(buf,size){try{if(size===0)return-28;var cwd=FS.cwd();var cwdLengthInBytes=lengthBytesUTF8(cwd)+1;if(size>>0,(tempDouble=id,+Math.abs(tempDouble)>=1?tempDouble>0?(Math.min(+Math.floor(tempDouble/4294967296),4294967295)|0)>>>0:~~+Math.ceil((tempDouble-+(~~tempDouble>>>0))/4294967296)>>>0:0)],HEAP32[dirp+pos>>2]=tempI64[0],HEAP32[dirp+pos+4>>2]=tempI64[1];tempI64=[(idx+1)*struct_size>>>0,(tempDouble=(idx+1)*struct_size,+Math.abs(tempDouble)>=1?tempDouble>0?(Math.min(+Math.floor(tempDouble/4294967296),4294967295)|0)>>>0:~~+Math.ceil((tempDouble-+(~~tempDouble>>>0))/4294967296)>>>0:0)],HEAP32[dirp+pos+8>>2]=tempI64[0],HEAP32[dirp+pos+12>>2]=tempI64[1];HEAP16[dirp+pos+16>>1]=280;HEAP8[dirp+pos+18>>0]=type;stringToUTF8(name,dirp+pos+19,256);pos+=struct_size;idx+=1}FS.llseek(stream,idx*struct_size,0);return pos}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_getpeername(fd,addr,addrlen){try{var sock=getSocketFromFD(fd);if(!sock.daddr){return-53}var errno=writeSockaddr(addr,sock.family,DNS.lookup_name(sock.daddr),sock.dport,addrlen);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_getsockname(fd,addr,addrlen){try{err("__syscall_getsockname "+fd);var sock=getSocketFromFD(fd);var errno=writeSockaddr(addr,sock.family,DNS.lookup_name(sock.saddr||"0.0.0.0"),sock.sport,addrlen);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_getsockopt(fd,level,optname,optval,optlen){try{var sock=getSocketFromFD(fd);if(level===1){if(optname===4){HEAP32[optval>>2]=sock.error;HEAP32[optlen>>2]=4;sock.error=null;return 0}}return-50}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_ioctl(fd,op,varargs){SYSCALLS.varargs=varargs;try{var stream=SYSCALLS.getStreamFromFD(fd);switch(op){case 21509:case 21505:{if(!stream.tty)return-59;return 0}case 21510:case 21511:case 21512:case 21506:case 21507:case 21508:{if(!stream.tty)return-59;return 0}case 21519:{if(!stream.tty)return-59;var argp=SYSCALLS.get();HEAP32[argp>>2]=0;return 0}case 21520:{if(!stream.tty)return-59;return-28}case 21531:{var argp=SYSCALLS.get();return FS.ioctl(stream,op,argp)}case 21523:{if(!stream.tty)return-59;return 0}case 21524:{if(!stream.tty)return-59;return 0}default:return-28}}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_listen(fd,backlog){try{var sock=getSocketFromFD(fd);sock.sock_ops.listen(sock,backlog);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_lstat64(path,buf){try{path=SYSCALLS.getStr(path);return SYSCALLS.doStat(FS.lstat,path,buf)}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_mkdirat(dirfd,path,mode){try{path=SYSCALLS.getStr(path);path=SYSCALLS.calculateAt(dirfd,path);path=PATH.normalize(path);if(path[path.length-1]==="/")path=path.substr(0,path.length-1);FS.mkdir(path,mode,0);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_newfstatat(dirfd,path,buf,flags){try{path=SYSCALLS.getStr(path);var nofollow=flags&256;var allowEmpty=flags&4096;flags=flags&~4352;path=SYSCALLS.calculateAt(dirfd,path,allowEmpty);return SYSCALLS.doStat(nofollow?FS.lstat:FS.stat,path,buf)}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_openat(dirfd,path,flags,varargs){SYSCALLS.varargs=varargs;try{path=SYSCALLS.getStr(path);path=SYSCALLS.calculateAt(dirfd,path);var mode=varargs?SYSCALLS.get():0;return FS.open(path,flags,mode).fd}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}var PIPEFS={BUCKET_BUFFER_SIZE:8192,mount:function(mount){return FS.createNode(null,"/",16384|511,0)},createPipe:function(){var pipe={buckets:[],refcnt:2};pipe.buckets.push({buffer:new Uint8Array(PIPEFS.BUCKET_BUFFER_SIZE),offset:0,roffset:0});var rName=PIPEFS.nextname();var wName=PIPEFS.nextname();var rNode=FS.createNode(PIPEFS.root,rName,4096,0);var wNode=FS.createNode(PIPEFS.root,wName,4096,0);rNode.pipe=pipe;wNode.pipe=pipe;var readableStream=FS.createStream({path:rName,node:rNode,flags:0,seekable:false,stream_ops:PIPEFS.stream_ops});rNode.stream=readableStream;var writableStream=FS.createStream({path:wName,node:wNode,flags:1,seekable:false,stream_ops:PIPEFS.stream_ops});wNode.stream=writableStream;return{readable_fd:readableStream.fd,writable_fd:writableStream.fd}},stream_ops:{poll:function(stream){var pipe=stream.node.pipe;if((stream.flags&2097155)===1){return 256|4}if(pipe.buckets.length>0){for(var i=0;i0){return 64|1}}}return 0},ioctl:function(stream,request,varargs){return 28},fsync:function(stream){return 28},read:function(stream,buffer,offset,length,position){var pipe=stream.node.pipe;var currentLength=0;for(var i=0;i=dataLen){currBucket.buffer.set(data,currBucket.offset);currBucket.offset+=dataLen;return dataLen}else if(freeBytesInCurrBuffer>0){currBucket.buffer.set(data.subarray(0,freeBytesInCurrBuffer),currBucket.offset);currBucket.offset+=freeBytesInCurrBuffer;data=data.subarray(freeBytesInCurrBuffer,data.byteLength)}var numBuckets=data.byteLength/PIPEFS.BUCKET_BUFFER_SIZE|0;var remElements=data.byteLength%PIPEFS.BUCKET_BUFFER_SIZE;for(var i=0;i0){var newBucket={buffer:new Uint8Array(PIPEFS.BUCKET_BUFFER_SIZE),offset:data.byteLength,roffset:0};pipe.buckets.push(newBucket);newBucket.buffer.set(data)}return dataLen},close:function(stream){var pipe=stream.node.pipe;pipe.refcnt--;if(pipe.refcnt===0){pipe.buckets=null}}},nextname:function(){if(!PIPEFS.nextname.current){PIPEFS.nextname.current=0}return"pipe["+PIPEFS.nextname.current+++"]"}};function ___syscall_pipe(fdPtr){try{if(fdPtr==0){throw new FS.ErrnoError(21)}var res=PIPEFS.createPipe();HEAP32[fdPtr>>2]=res.readable_fd;HEAP32[fdPtr+4>>2]=res.writable_fd;return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_poll(fds,nfds,timeout){try{var nonzero=0;for(var i=0;i>2];var events=HEAP16[pollfd+4>>1];var mask=32;var stream=FS.getStream(fd);if(stream){mask=SYSCALLS.DEFAULT_POLLMASK;if(stream.stream_ops.poll){mask=stream.stream_ops.poll(stream)}}mask&=events|8|16;if(mask)nonzero++;HEAP16[pollfd+6>>1]=mask}return nonzero}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_readlinkat(dirfd,path,buf,bufsize){try{path=SYSCALLS.getStr(path);path=SYSCALLS.calculateAt(dirfd,path);if(bufsize<=0)return-28;var ret=FS.readlink(path);var len=Math.min(bufsize,lengthBytesUTF8(ret));var endChar=HEAP8[buf+len];stringToUTF8(ret,buf,bufsize+1);HEAP8[buf+len]=endChar;return len}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_recvfrom(fd,buf,len,flags,addr,addrlen){try{var sock=getSocketFromFD(fd);var msg=sock.sock_ops.recvmsg(sock,len);if(!msg)return 0;if(addr){var errno=writeSockaddr(addr,sock.family,DNS.lookup_name(msg.addr),msg.port,addrlen)}HEAPU8.set(msg.buffer,buf);return msg.buffer.byteLength}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_renameat(olddirfd,oldpath,newdirfd,newpath){try{oldpath=SYSCALLS.getStr(oldpath);newpath=SYSCALLS.getStr(newpath);oldpath=SYSCALLS.calculateAt(olddirfd,oldpath);newpath=SYSCALLS.calculateAt(newdirfd,newpath);FS.rename(oldpath,newpath);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_rmdir(path){try{path=SYSCALLS.getStr(path);FS.rmdir(path);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_sendto(fd,message,length,flags,addr,addr_len){try{var sock=getSocketFromFD(fd);var dest=getSocketAddress(addr,addr_len,true);if(!dest){return FS.write(sock.stream,HEAP8,message,length)}return sock.sock_ops.sendmsg(sock,HEAP8,message,length,dest.addr,dest.port)}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_socket(domain,type,protocol){try{var sock=SOCKFS.createSocket(domain,type,protocol);return sock.stream.fd}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_stat64(path,buf){try{path=SYSCALLS.getStr(path);return SYSCALLS.doStat(FS.stat,path,buf)}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_statfs64(path,size,buf){try{path=SYSCALLS.getStr(path);HEAP32[buf+4>>2]=4096;HEAP32[buf+40>>2]=4096;HEAP32[buf+8>>2]=1e6;HEAP32[buf+12>>2]=5e5;HEAP32[buf+16>>2]=5e5;HEAP32[buf+20>>2]=FS.nextInode;HEAP32[buf+24>>2]=1e6;HEAP32[buf+28>>2]=42;HEAP32[buf+44>>2]=2;HEAP32[buf+36>>2]=255;return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_symlink(target,linkpath){try{target=SYSCALLS.getStr(target);linkpath=SYSCALLS.getStr(linkpath);FS.symlink(target,linkpath);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function ___syscall_unlinkat(dirfd,path,flags){try{path=SYSCALLS.getStr(path);path=SYSCALLS.calculateAt(dirfd,path);if(flags===0){FS.unlink(path)}else if(flags===512){FS.rmdir(path)}else{abort("Invalid flags passed to unlinkat")}return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function readI53FromI64(ptr){return HEAPU32[ptr>>2]+HEAP32[ptr+4>>2]*4294967296}function ___syscall_utimensat(dirfd,path,times,flags){try{path=SYSCALLS.getStr(path);path=SYSCALLS.calculateAt(dirfd,path,true);if(!times){var atime=Date.now();var mtime=atime}else{var seconds=readI53FromI64(times);var nanoseconds=HEAP32[times+8>>2];atime=seconds*1e3+nanoseconds/(1e3*1e3);times+=16;seconds=readI53FromI64(times);nanoseconds=HEAP32[times+8>>2];mtime=seconds*1e3+nanoseconds/(1e3*1e3)}FS.utime(path,atime,mtime);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function __dlinit(main_dso_handle){}var dlopenMissingError="To use dlopen, you need enable dynamic linking, see https://github.com/emscripten-core/emscripten/wiki/Linking";function __dlopen_js(filename,flag){abort(dlopenMissingError)}function __dlsym_js(handle,symbol){abort(dlopenMissingError)}var nowIsMonotonic=true;function __emscripten_get_now_is_monotonic(){return nowIsMonotonic}function __emscripten_throw_longjmp(){throw Infinity}function __gmtime_js(time,tmPtr){var date=new Date(readI53FromI64(time)*1e3);HEAP32[tmPtr>>2]=date.getUTCSeconds();HEAP32[tmPtr+4>>2]=date.getUTCMinutes();HEAP32[tmPtr+8>>2]=date.getUTCHours();HEAP32[tmPtr+12>>2]=date.getUTCDate();HEAP32[tmPtr+16>>2]=date.getUTCMonth();HEAP32[tmPtr+20>>2]=date.getUTCFullYear()-1900;HEAP32[tmPtr+24>>2]=date.getUTCDay();var start=Date.UTC(date.getUTCFullYear(),0,1,0,0,0,0);var yday=(date.getTime()-start)/(1e3*60*60*24)|0;HEAP32[tmPtr+28>>2]=yday}function __localtime_js(time,tmPtr){var date=new Date(readI53FromI64(time)*1e3);HEAP32[tmPtr>>2]=date.getSeconds();HEAP32[tmPtr+4>>2]=date.getMinutes();HEAP32[tmPtr+8>>2]=date.getHours();HEAP32[tmPtr+12>>2]=date.getDate();HEAP32[tmPtr+16>>2]=date.getMonth();HEAP32[tmPtr+20>>2]=date.getFullYear()-1900;HEAP32[tmPtr+24>>2]=date.getDay();var start=new Date(date.getFullYear(),0,1);var yday=(date.getTime()-start.getTime())/(1e3*60*60*24)|0;HEAP32[tmPtr+28>>2]=yday;HEAP32[tmPtr+36>>2]=-(date.getTimezoneOffset()*60);var summerOffset=new Date(date.getFullYear(),6,1).getTimezoneOffset();var winterOffset=start.getTimezoneOffset();var dst=(summerOffset!=winterOffset&&date.getTimezoneOffset()==Math.min(winterOffset,summerOffset))|0;HEAP32[tmPtr+32>>2]=dst}function __mktime_js(tmPtr){var date=new Date(HEAP32[tmPtr+20>>2]+1900,HEAP32[tmPtr+16>>2],HEAP32[tmPtr+12>>2],HEAP32[tmPtr+8>>2],HEAP32[tmPtr+4>>2],HEAP32[tmPtr>>2],0);var dst=HEAP32[tmPtr+32>>2];var guessedOffset=date.getTimezoneOffset();var start=new Date(date.getFullYear(),0,1);var summerOffset=new Date(date.getFullYear(),6,1).getTimezoneOffset();var winterOffset=start.getTimezoneOffset();var dstOffset=Math.min(winterOffset,summerOffset);if(dst<0){HEAP32[tmPtr+32>>2]=Number(summerOffset!=winterOffset&&dstOffset==guessedOffset)}else if(dst>0!=(dstOffset==guessedOffset)){var nonDstOffset=Math.max(winterOffset,summerOffset);var trueOffset=dst>0?dstOffset:nonDstOffset;date.setTime(date.getTime()+(trueOffset-guessedOffset)*6e4)}HEAP32[tmPtr+24>>2]=date.getDay();var yday=(date.getTime()-start.getTime())/(1e3*60*60*24)|0;HEAP32[tmPtr+28>>2]=yday;HEAP32[tmPtr>>2]=date.getSeconds();HEAP32[tmPtr+4>>2]=date.getMinutes();HEAP32[tmPtr+8>>2]=date.getHours();HEAP32[tmPtr+12>>2]=date.getDate();HEAP32[tmPtr+16>>2]=date.getMonth();HEAP32[tmPtr+20>>2]=date.getYear();return date.getTime()/1e3|0}function __mmap_js(len,prot,flags,fd,off,allocated,addr){try{var stream=SYSCALLS.getStreamFromFD(fd);var res=FS.mmap(stream,len,off,prot,flags);var ptr=res.ptr;HEAP32[allocated>>2]=res.allocated;HEAPU32[addr>>2]=ptr;return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function __munmap_js(addr,len,prot,flags,fd,offset){try{var stream=SYSCALLS.getStreamFromFD(fd);if(prot&2){SYSCALLS.doMsync(addr,stream,len,flags,offset)}FS.munmap(stream)}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return-e.errno}}function allocateUTF8(str){var size=lengthBytesUTF8(str)+1;var ret=_malloc(size);if(ret)stringToUTF8Array(str,HEAP8,ret,size);return ret}function _tzset_impl(timezone,daylight,tzname){var currentYear=(new Date).getFullYear();var winter=new Date(currentYear,0,1);var summer=new Date(currentYear,6,1);var winterOffset=winter.getTimezoneOffset();var summerOffset=summer.getTimezoneOffset();var stdTimezoneOffset=Math.max(winterOffset,summerOffset);HEAP32[timezone>>2]=stdTimezoneOffset*60;HEAP32[daylight>>2]=Number(winterOffset!=summerOffset);function extractZone(date){var match=date.toTimeString().match(/\(([A-Za-z ]+)\)$/);return match?match[1]:"GMT"}var winterName=extractZone(winter);var summerName=extractZone(summer);var winterNamePtr=allocateUTF8(winterName);var summerNamePtr=allocateUTF8(summerName);if(summerOffset>2]=winterNamePtr;HEAPU32[tzname+4>>2]=summerNamePtr}else{HEAPU32[tzname>>2]=summerNamePtr;HEAPU32[tzname+4>>2]=winterNamePtr}}function __tzset_js(timezone,daylight,tzname){if(__tzset_js.called)return;__tzset_js.called=true;_tzset_impl(timezone,daylight,tzname)}function _abort(){abort("")}function _emscripten_date_now(){return Date.now()}function getHeapMax(){return 2147483648}function _emscripten_get_heap_max(){return getHeapMax()}var _emscripten_get_now;_emscripten_get_now=()=>performance.now();function _emscripten_memcpy_big(dest,src,num){HEAPU8.copyWithin(dest,src,src+num)}function emscripten_realloc_buffer(size){try{wasmMemory.grow(size-buffer.byteLength+65535>>>16);updateGlobalBufferAndViews(wasmMemory.buffer);return 1}catch(e){}}function _emscripten_resize_heap(requestedSize){var oldSize=HEAPU8.length;requestedSize=requestedSize>>>0;var maxHeapSize=getHeapMax();if(requestedSize>maxHeapSize){return false}let alignUp=(x,multiple)=>x+(multiple-x%multiple)%multiple;for(var cutDown=1;cutDown<=4;cutDown*=2){var overGrownHeapSize=oldSize*(1+.2/cutDown);overGrownHeapSize=Math.min(overGrownHeapSize,requestedSize+100663296);var newSize=Math.min(maxHeapSize,alignUp(Math.max(requestedSize,overGrownHeapSize),65536));var replacement=emscripten_realloc_buffer(newSize);if(replacement){return true}}return false}var ENV={};function getExecutableName(){return thisProgram||"./this.program"}function getEnvStrings(){if(!getEnvStrings.strings){var lang=(typeof navigator=="object"&&navigator.languages&&navigator.languages[0]||"C").replace("-","_")+".UTF-8";var env={"USER":"web_user","LOGNAME":"web_user","PATH":"/","PWD":"/","HOME":"/home/web_user","LANG":lang,"_":getExecutableName()};for(var x in ENV){if(ENV[x]===undefined)delete env[x];else env[x]=ENV[x]}var strings=[];for(var x in env){strings.push(x+"="+env[x])}getEnvStrings.strings=strings}return getEnvStrings.strings}function writeAsciiToMemory(str,buffer,dontAddNull){for(var i=0;i>0]=str.charCodeAt(i)}if(!dontAddNull)HEAP8[buffer>>0]=0}function _environ_get(__environ,environ_buf){var bufSize=0;getEnvStrings().forEach(function(string,i){var ptr=environ_buf+bufSize;HEAPU32[__environ+i*4>>2]=ptr;writeAsciiToMemory(string,ptr);bufSize+=string.length+1});return 0}function _environ_sizes_get(penviron_count,penviron_buf_size){var strings=getEnvStrings();HEAPU32[penviron_count>>2]=strings.length;var bufSize=0;strings.forEach(function(string){bufSize+=string.length+1});HEAPU32[penviron_buf_size>>2]=bufSize;return 0}function _proc_exit(code){EXITSTATUS=code;if(!keepRuntimeAlive()){if(Module["onExit"])Module["onExit"](code);ABORT=true}quit_(code,new ExitStatus(code))}function exitJS(status,implicit){EXITSTATUS=status;_proc_exit(status)}var _exit=exitJS;function _fd_close(fd){try{var stream=SYSCALLS.getStreamFromFD(fd);FS.close(stream);return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return e.errno}}function _fd_fdstat_get(fd,pbuf){try{var stream=SYSCALLS.getStreamFromFD(fd);var type=stream.tty?2:FS.isDir(stream.mode)?3:FS.isLink(stream.mode)?7:4;HEAP8[pbuf>>0]=type;return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return e.errno}}function doReadv(stream,iov,iovcnt,offset){var ret=0;for(var i=0;i>2];var len=HEAPU32[iov+4>>2];iov+=8;var curr=FS.read(stream,HEAP8,ptr,len,offset);if(curr<0)return-1;ret+=curr;if(curr>2]=num;return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return e.errno}}function _fd_seek(fd,offset_low,offset_high,whence,newOffset){try{var offset=convertI32PairToI53Checked(offset_low,offset_high);if(isNaN(offset))return 61;var stream=SYSCALLS.getStreamFromFD(fd);FS.llseek(stream,offset,whence);tempI64=[stream.position>>>0,(tempDouble=stream.position,+Math.abs(tempDouble)>=1?tempDouble>0?(Math.min(+Math.floor(tempDouble/4294967296),4294967295)|0)>>>0:~~+Math.ceil((tempDouble-+(~~tempDouble>>>0))/4294967296)>>>0:0)],HEAP32[newOffset>>2]=tempI64[0],HEAP32[newOffset+4>>2]=tempI64[1];if(stream.getdents&&offset===0&&whence===0)stream.getdents=null;return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return e.errno}}function _fd_sync(fd){try{var stream=SYSCALLS.getStreamFromFD(fd);if(stream.stream_ops&&stream.stream_ops.fsync){return stream.stream_ops.fsync(stream)}return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return e.errno}}function doWritev(stream,iov,iovcnt,offset){var ret=0;for(var i=0;i>2];var len=HEAPU32[iov+4>>2];iov+=8;var curr=FS.write(stream,HEAP8,ptr,len,offset);if(curr<0)return-1;ret+=curr}return ret}function _fd_write(fd,iov,iovcnt,pnum){try{var stream=SYSCALLS.getStreamFromFD(fd);var num=doWritev(stream,iov,iovcnt);HEAPU32[pnum>>2]=num;return 0}catch(e){if(typeof FS=="undefined"||!(e instanceof FS.ErrnoError))throw e;return e.errno}}function _getaddrinfo(node,service,hint,out){var addr=0;var port=0;var flags=0;var family=0;var type=0;var proto=0;var ai;function allocaddrinfo(family,type,proto,canon,addr,port){var sa,salen,ai;var errno;salen=family===10?28:16;addr=family===10?inetNtop6(addr):inetNtop4(addr);sa=_malloc(salen);errno=writeSockaddr(sa,family,addr,port);assert(!errno);ai=_malloc(32);HEAP32[ai+4>>2]=family;HEAP32[ai+8>>2]=type;HEAP32[ai+12>>2]=proto;HEAP32[ai+24>>2]=canon;HEAPU32[ai+20>>2]=sa;if(family===10){HEAP32[ai+16>>2]=28}else{HEAP32[ai+16>>2]=16}HEAP32[ai+28>>2]=0;return ai}if(hint){flags=HEAP32[hint>>2];family=HEAP32[hint+4>>2];type=HEAP32[hint+8>>2];proto=HEAP32[hint+12>>2]}if(type&&!proto){proto=type===2?17:6}if(!type&&proto){type=proto===17?2:1}if(proto===0){proto=6}if(type===0){type=1}if(!node&&!service){return-2}if(flags&~(1|2|4|1024|8|16|32)){return-1}if(hint!==0&&HEAP32[hint>>2]&2&&!node){return-1}if(flags&32){return-2}if(type!==0&&type!==1&&type!==2){return-7}if(family!==0&&family!==2&&family!==10){return-6}if(service){service=UTF8ToString(service);port=parseInt(service,10);if(isNaN(port)){if(flags&1024){return-2}return-8}}if(!node){if(family===0){family=2}if((flags&1)===0){if(family===2){addr=_htonl(2130706433)}else{addr=[0,0,0,1]}}ai=allocaddrinfo(family,type,proto,null,addr,port);HEAPU32[out>>2]=ai;return 0}node=UTF8ToString(node);addr=inetPton4(node);if(addr!==null){if(family===0||family===2){family=2}else if(family===10&&flags&8){addr=[0,0,_htonl(65535),addr];family=10}else{return-2}}else{addr=inetPton6(node);if(addr!==null){if(family===0||family===10){family=10}else{return-2}}}if(addr!=null){ai=allocaddrinfo(family,type,proto,node,addr,port);HEAPU32[out>>2]=ai;return 0}if(flags&4){return-2}node=DNS.lookup_name(node);addr=inetPton4(node);if(family===0){family=2}else if(family===10){addr=[0,0,_htonl(65535),addr]}ai=allocaddrinfo(family,type,proto,null,addr,port);HEAPU32[out>>2]=ai;return 0}function _getdtablesize(){err("missing function: getdtablesize");abort(-1)}function getHostByName(name){var ret=_malloc(20);var nameBuf=_malloc(name.length+1);stringToUTF8(name,nameBuf,name.length+1);HEAPU32[ret>>2]=nameBuf;var aliasesBuf=_malloc(4);HEAPU32[aliasesBuf>>2]=0;HEAPU32[ret+4>>2]=aliasesBuf;var afinet=2;HEAP32[ret+8>>2]=afinet;HEAP32[ret+12>>2]=4;var addrListBuf=_malloc(12);HEAPU32[addrListBuf>>2]=addrListBuf+8;HEAPU32[addrListBuf+4>>2]=0;HEAP32[addrListBuf+8>>2]=inetPton4(DNS.lookup_name(name));HEAPU32[ret+16>>2]=addrListBuf;return ret}function _gethostbyaddr(addr,addrlen,type){if(type!==2){setErrNo(5);return null}addr=HEAP32[addr>>2];var host=inetNtop4(addr);var lookup=DNS.lookup_addr(host);if(lookup){host=lookup}return getHostByName(host)}function _gethostbyname(name){return getHostByName(UTF8ToString(name))}function _gethostbyname_r(name,ret,buf,buflen,out,err){var data=_gethostbyname(name);_memcpy(ret,data,20);_free(data);HEAP32[err>>2]=0;HEAPU32[out>>2]=ret;return 0}function _getloadavg(loadavg,nelem){var limit=Math.min(nelem,3);var doubleSize=8;for(var i=0;i>3]=.1}return limit}function _getnameinfo(sa,salen,node,nodelen,serv,servlen,flags){var info=readSockaddr(sa,salen);if(info.errno){return-6}var port=info.port;var addr=info.addr;var overflowed=false;if(node&&nodelen){var lookup;if(flags&1||!(lookup=DNS.lookup_addr(addr))){if(flags&8){return-2}}else{addr=lookup}var numBytesWrittenExclNull=stringToUTF8(addr,node,nodelen);if(numBytesWrittenExclNull+1>=nodelen){overflowed=true}}if(serv&&servlen){port=""+port;var numBytesWrittenExclNull=stringToUTF8(port,serv,servlen);if(numBytesWrittenExclNull+1>=servlen){overflowed=true}}if(overflowed){return-12}return 0}var Protocols={list:[],map:{}};function _setprotoent(stayopen){function allocprotoent(name,proto,aliases){var nameBuf=_malloc(name.length+1);writeAsciiToMemory(name,nameBuf);var j=0;var length=aliases.length;var aliasListBuf=_malloc((length+1)*4);for(var i=0;i>2]=aliasBuf}HEAPU32[aliasListBuf+j>>2]=0;var pe=_malloc(12);HEAPU32[pe>>2]=nameBuf;HEAPU32[pe+4>>2]=aliasListBuf;HEAP32[pe+8>>2]=proto;return pe}var list=Protocols.list;var map=Protocols.map;if(list.length===0){var entry=allocprotoent("tcp",6,["TCP"]);list.push(entry);map["tcp"]=map["6"]=entry;entry=allocprotoent("udp",17,["UDP"]);list.push(entry);map["udp"]=map["17"]=entry}_setprotoent.index=0}function _getprotobyname(name){name=UTF8ToString(name);_setprotoent(true);var result=Protocols.map[name];return result}function _getprotobynumber(number){_setprotoent(true);var result=Protocols.map[number];return result}function __isLeapYear(year){return year%4===0&&(year%100!==0||year%400===0)}function __arraySum(array,index){var sum=0;for(var i=0;i<=index;sum+=array[i++]){}return sum}var __MONTH_DAYS_LEAP=[31,29,31,30,31,30,31,31,30,31,30,31];var __MONTH_DAYS_REGULAR=[31,28,31,30,31,30,31,31,30,31,30,31];function __addDays(date,days){var newDate=new Date(date.getTime());while(days>0){var leap=__isLeapYear(newDate.getFullYear());var currentMonth=newDate.getMonth();var daysInCurrentMonth=(leap?__MONTH_DAYS_LEAP:__MONTH_DAYS_REGULAR)[currentMonth];if(days>daysInCurrentMonth-newDate.getDate()){days-=daysInCurrentMonth-newDate.getDate()+1;newDate.setDate(1);if(currentMonth<11){newDate.setMonth(currentMonth+1)}else{newDate.setMonth(0);newDate.setFullYear(newDate.getFullYear()+1)}}else{newDate.setDate(newDate.getDate()+days);return newDate}}return newDate}function writeArrayToMemory(array,buffer){HEAP8.set(array,buffer)}function _strftime(s,maxsize,format,tm){var tm_zone=HEAP32[tm+40>>2];var date={tm_sec:HEAP32[tm>>2],tm_min:HEAP32[tm+4>>2],tm_hour:HEAP32[tm+8>>2],tm_mday:HEAP32[tm+12>>2],tm_mon:HEAP32[tm+16>>2],tm_year:HEAP32[tm+20>>2],tm_wday:HEAP32[tm+24>>2],tm_yday:HEAP32[tm+28>>2],tm_isdst:HEAP32[tm+32>>2],tm_gmtoff:HEAP32[tm+36>>2],tm_zone:tm_zone?UTF8ToString(tm_zone):""};var pattern=UTF8ToString(format);var EXPANSION_RULES_1={"%c":"%a %b %d %H:%M:%S %Y","%D":"%m/%d/%y","%F":"%Y-%m-%d","%h":"%b","%r":"%I:%M:%S %p","%R":"%H:%M","%T":"%H:%M:%S","%x":"%m/%d/%y","%X":"%H:%M:%S","%Ec":"%c","%EC":"%C","%Ex":"%m/%d/%y","%EX":"%H:%M:%S","%Ey":"%y","%EY":"%Y","%Od":"%d","%Oe":"%e","%OH":"%H","%OI":"%I","%Om":"%m","%OM":"%M","%OS":"%S","%Ou":"%u","%OU":"%U","%OV":"%V","%Ow":"%w","%OW":"%W","%Oy":"%y"};for(var rule in EXPANSION_RULES_1){pattern=pattern.replace(new RegExp(rule,"g"),EXPANSION_RULES_1[rule])}var WEEKDAYS=["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"];var MONTHS=["January","February","March","April","May","June","July","August","September","October","November","December"];function leadingSomething(value,digits,character){var str=typeof value=="number"?value.toString():value||"";while(str.length0?1:0}var compare;if((compare=sgn(date1.getFullYear()-date2.getFullYear()))===0){if((compare=sgn(date1.getMonth()-date2.getMonth()))===0){compare=sgn(date1.getDate()-date2.getDate())}}return compare}function getFirstWeekStartDate(janFourth){switch(janFourth.getDay()){case 0:return new Date(janFourth.getFullYear()-1,11,29);case 1:return janFourth;case 2:return new Date(janFourth.getFullYear(),0,3);case 3:return new Date(janFourth.getFullYear(),0,2);case 4:return new Date(janFourth.getFullYear(),0,1);case 5:return new Date(janFourth.getFullYear()-1,11,31);case 6:return new Date(janFourth.getFullYear()-1,11,30)}}function getWeekBasedYear(date){var thisDate=__addDays(new Date(date.tm_year+1900,0,1),date.tm_yday);var janFourthThisYear=new Date(thisDate.getFullYear(),0,4);var janFourthNextYear=new Date(thisDate.getFullYear()+1,0,4);var firstWeekStartThisYear=getFirstWeekStartDate(janFourthThisYear);var firstWeekStartNextYear=getFirstWeekStartDate(janFourthNextYear);if(compareByDay(firstWeekStartThisYear,thisDate)<=0){if(compareByDay(firstWeekStartNextYear,thisDate)<=0){return thisDate.getFullYear()+1}return thisDate.getFullYear()}return thisDate.getFullYear()-1}var EXPANSION_RULES_2={"%a":function(date){return WEEKDAYS[date.tm_wday].substring(0,3)},"%A":function(date){return WEEKDAYS[date.tm_wday]},"%b":function(date){return MONTHS[date.tm_mon].substring(0,3)},"%B":function(date){return MONTHS[date.tm_mon]},"%C":function(date){var year=date.tm_year+1900;return leadingNulls(year/100|0,2)},"%d":function(date){return leadingNulls(date.tm_mday,2)},"%e":function(date){return leadingSomething(date.tm_mday,2," ")},"%g":function(date){return getWeekBasedYear(date).toString().substring(2)},"%G":function(date){return getWeekBasedYear(date)},"%H":function(date){return leadingNulls(date.tm_hour,2)},"%I":function(date){var twelveHour=date.tm_hour;if(twelveHour==0)twelveHour=12;else if(twelveHour>12)twelveHour-=12;return leadingNulls(twelveHour,2)},"%j":function(date){return leadingNulls(date.tm_mday+__arraySum(__isLeapYear(date.tm_year+1900)?__MONTH_DAYS_LEAP:__MONTH_DAYS_REGULAR,date.tm_mon-1),3)},"%m":function(date){return leadingNulls(date.tm_mon+1,2)},"%M":function(date){return leadingNulls(date.tm_min,2)},"%n":function(){return"\n"},"%p":function(date){if(date.tm_hour>=0&&date.tm_hour<12){return"AM"}return"PM"},"%S":function(date){return leadingNulls(date.tm_sec,2)},"%t":function(){return"\t"},"%u":function(date){return date.tm_wday||7},"%U":function(date){var days=date.tm_yday+7-date.tm_wday;return leadingNulls(Math.floor(days/7),2)},"%V":function(date){var val=Math.floor((date.tm_yday+7-(date.tm_wday+6)%7)/7);if((date.tm_wday+371-date.tm_yday-2)%7<=2){val++}if(!val){val=52;var dec31=(date.tm_wday+7-date.tm_yday-1)%7;if(dec31==4||dec31==5&&__isLeapYear(date.tm_year%400-1)){val++}}else if(val==53){var jan1=(date.tm_wday+371-date.tm_yday)%7;if(jan1!=4&&(jan1!=3||!__isLeapYear(date.tm_year)))val=1}return leadingNulls(val,2)},"%w":function(date){return date.tm_wday},"%W":function(date){var days=date.tm_yday+7-(date.tm_wday+6)%7;return leadingNulls(Math.floor(days/7),2)},"%y":function(date){return(date.tm_year+1900).toString().substring(2)},"%Y":function(date){return date.tm_year+1900},"%z":function(date){var off=date.tm_gmtoff;var ahead=off>=0;off=Math.abs(off)/60;off=off/60*100+off%60;return(ahead?"+":"-")+String("0000"+off).slice(-4)},"%Z":function(date){return date.tm_zone},"%%":function(){return"%"}};pattern=pattern.replace(/%%/g,"\0\0");for(var rule in EXPANSION_RULES_2){if(pattern.includes(rule)){pattern=pattern.replace(new RegExp(rule,"g"),EXPANSION_RULES_2[rule](date))}}pattern=pattern.replace(/\0\0/g,"%");var bytes=intArrayFromString(pattern,false);if(bytes.length>maxsize){return 0}writeArrayToMemory(bytes,s);return bytes.length-1}function _strptime(buf,format,tm){var pattern=UTF8ToString(format);var SPECIAL_CHARS="\\!@#$^&*()+=-[]/{}|:<>?,.";for(var i=0,ii=SPECIAL_CHARS.length;i=0;i=pattern.indexOf("%")){capture.push(pattern[i+1]);pattern=pattern.replace(new RegExp("\\%"+pattern[i+1],"g"),"")}var 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year=jstoi_q(value);if(value=getMatch("C")){year+=jstoi_q(value)*100}else{year+=year<69?2e3:1900}date.year=year}if(value=getMatch("m")){date.month=jstoi_q(value)-1}else if(value=getMatch("b")){date.month=MONTH_NUMBERS[value.substring(0,3).toUpperCase()]||0}if(value=getMatch("d")){date.day=jstoi_q(value)}else if(value=getMatch("j")){var day=jstoi_q(value);var leapYear=__isLeapYear(date.year);for(var month=0;month<12;++month){var daysUntilMonth=__arraySum(leapYear?__MONTH_DAYS_LEAP:__MONTH_DAYS_REGULAR,month-1);if(day<=daysUntilMonth+(leapYear?__MONTH_DAYS_LEAP:__MONTH_DAYS_REGULAR)[month]){date.day=day-daysUntilMonth}}}else if(value=getMatch("a")){var weekDay=value.substring(0,3).toUpperCase();if(value=getMatch("U")){var weekDayNumber=DAY_NUMBERS_SUN_FIRST[weekDay];var weekNumber=jstoi_q(value);var janFirst=new Date(date.year,0,1);var endDate;if(janFirst.getDay()===0){endDate=__addDays(janFirst,weekDayNumber+7*(weekNumber-1))}else{endDate=__addDays(janFirst,7-janFirst.getDay()+weekDayNumber+7*(weekNumber-1))}date.day=endDate.getDate();date.month=endDate.getMonth()}else if(value=getMatch("W")){var weekDayNumber=DAY_NUMBERS_MON_FIRST[weekDay];var weekNumber=jstoi_q(value);var janFirst=new Date(date.year,0,1);var endDate;if(janFirst.getDay()===1){endDate=__addDays(janFirst,weekDayNumber+7*(weekNumber-1))}else{endDate=__addDays(janFirst,7-janFirst.getDay()+1+weekDayNumber+7*(weekNumber-1))}date.day=endDate.getDate();date.month=endDate.getMonth()}}var fullDate=new Date(date.year,date.month,date.day,date.hour,date.min,date.sec,0);HEAP32[tm>>2]=fullDate.getSeconds();HEAP32[tm+4>>2]=fullDate.getMinutes();HEAP32[tm+8>>2]=fullDate.getHours();HEAP32[tm+12>>2]=fullDate.getDate();HEAP32[tm+16>>2]=fullDate.getMonth();HEAP32[tm+20>>2]=fullDate.getFullYear()-1900;HEAP32[tm+24>>2]=fullDate.getDay();HEAP32[tm+28>>2]=__arraySum(__isLeapYear(fullDate.getFullYear())?__MONTH_DAYS_LEAP:__MONTH_DAYS_REGULAR,fullDate.getMonth()-1)+fullDate.getDate()-1;HEAP32[tm+32>>2]=0;return buf+intArrayFromString(matches[0]).length-1}return 0}function getCFunc(ident){var func=Module["_"+ident];return func}function ccall(ident,returnType,argTypes,args,opts){var toC={"string":str=>{var ret=0;if(str!==null&&str!==undefined&&str!==0){var len=(str.length<<2)+1;ret=stackAlloc(len);stringToUTF8(str,ret,len)}return ret},"array":arr=>{var ret=stackAlloc(arr.length);writeArrayToMemory(arr,ret);return ret}};function convertReturnValue(ret){if(returnType==="string"){return UTF8ToString(ret)}if(returnType==="boolean")return Boolean(ret);return ret}var func=getCFunc(ident);var cArgs=[];var stack=0;if(args){for(var i=0;i0){return}preRun();if(runDependencies>0){return}function doRun(){if(calledRun)return;calledRun=true;Module["calledRun"]=true;if(ABORT)return;initRuntime();if(Module["onRuntimeInitialized"])Module["onRuntimeInitialized"]();postRun()}if(Module["setStatus"]){Module["setStatus"]("Running...");setTimeout(function(){setTimeout(function(){Module["setStatus"]("")},1);doRun()},1)}else{doRun()}}if(Module["preInit"]){if(typeof Module["preInit"]=="function")Module["preInit"]=[Module["preInit"]];while(Module["preInit"].length>0){Module["preInit"].pop()()}}run(); // See esm-prefix.js return PHPLoader; } \ No newline at end of file diff --git a/build/php.wasm b/build/php.wasm index c78a420520..f741dd9726 100755 Binary files a/build/php.wasm and b/build/php.wasm differ diff --git a/package.json b/package.json index 59644a19d2..cf96848d1b 100644 --- a/package.json +++ b/package.json @@ -40,8 +40,8 @@ "yargs": "^17.5.1" }, "devDependencies": { + "@wordpress/docgen": "^1.29.0", "@wordpress/eslint-plugin": "^13.0.0", - "live-server": "^1.2.2", "chokidar-cli": "^3.0.0", "esbuild": "^0.15.5", "eslint": "8.22.0", @@ -53,6 +53,7 @@ "gulp": "^4.0.2", "gulp-rename": "^2.0.0", "gulp-replace": "^1.1.3", + "live-server": "^1.2.2", "npm-run-all": "^4.1.5", "prettier": "^2.7.1", "request": "^2.88.2" diff --git a/packages/php-wasm-browser/README.md b/packages/php-wasm-browser/README.md new file mode 100644 index 0000000000..03e4e244bb --- /dev/null +++ b/packages/php-wasm-browser/README.md @@ -0,0 +1,449 @@ +# Use PHP in the browser + +`php-wasm` makes running PHP code in JavaScript easy, but running PHP websites in the browser is more complex than just executing some code. + +Say a PHP script renders a link and a user clicks that link. Normally, the browser sends a HTTP request to a server and reloads the page. What should happen when there is no server and reloading the page means losing all progress? + +Enter `php-wasm-browser`! A set of tools to solve the common headaches of running PHP websites in the browser. Importantly, this package does not provide a ready-to-use app. It merely gives you the tools to build one. + +## Architecture + +- **Browser tab orchestrates the execution** – The browser tab is the main program. Closing or reloading it means destroying the entire execution environment. +- **Iframe-based rendering** – Every response produced by the PHP server must be rendered in an iframe to avoid reloading the browser tab on navigation. +- **PHP Worker Thread** – The PHP server is slow and must run in a worker thread, otherwise handling requests freezes the website UI. +- **Service Worker routing** – All HTTP requests originating in that iframe must be intercepted by a Service worker and passed on to the PHP worker thread for rendering. + +That's a lot of information to take in! Keep reading for the detailed breakdown. + +### Browser tab orchestrates the execution + +The main `index.html` ties the entire application together. It starts all the concurrent processes and displays the PHP responses. The app only lives as long as the main `index.html`. + +Keep this point in mind as you read through the rest of the docs. At this point it may seem obvious, by the lines may get blurry later on. This package runs code outside of the browser tab using Web Workers, Service Workers, and, in the future, Shared Workers. Some of these workers may keep running even after the browser tab with `index.html` is closed. + +#### Boot sequence + +Here's what a boot sequence for a minimal app looks like: + +![The boot sequence](./docs/boot-sequence.png) + +The main app initiates the Iframe, the Service Worker, and the Worker Thread. Note how the main app doesn't use the PHP stack directly – it's all handled in the Worker Thread. + +Here's what that boot sequence looks like in code: + +**/index.html**: + +```js + + +``` + +**/app.js**: + +```js +import { + registerServiceWorker, + spawnPHPWorkerThread, + getWorkerThreadFrontend +} from 'php-wasm-browser'; + +export async function startApp() { + const workerThread = await spawnPHPWorkerThread( + // Worker Thread backend – either 'iframe' or 'webworker' + 'webworker', + // Must point to a valid worker thread script: + '/worker-thread.js' + ); + // Must point to a valid Service Worker script: + await registerServiceWorker('/service-worker.js'); + + // Create a few PHP files to browse: + await workerThread.eval(`Go to page.php'); + file_put_contents('page.php', ''); + `); + + // Navigate to index.php: + document.getElementById('my-app').src = '/index.php'; +} +startApp(); +``` + +**/worker-thread.js**: + +```js +import { initializeWorkerThread } from 'php-wasm-browser'; + +// Loads /php.js and /php.wasm provided by php-wasm, +// Listens to commands issued by the main app and +// the requests from the Service Worker. +initializeWorkerThread(); +``` + +**/service-worker.js**: + +```js +import { initializeServiceWorker } from 'php-wasm-browser'; + +// Intercepts all HTTP traffic on the current domain and +// passes it to the Worker Thread. +initializeServiceWorker(); +``` + +Keep reading to learn how all these pieces fit together. + +#### Data flow + +Here's what happens whenever the iframe issues a same-domain request: + +![The data flow](./docs/data-flow.png) + +A step-by-step breakown: + +1. The request is intercepted by the Service Worker +2. The Service Worker passes it to the Worker Thread +3. The Worker Thread uses the `PHPServer` to convert that request to a response +4. The Worker Thread passes the response to the Service Worker +5. The Service Worker provides the browser with a response + +At this point, if the request was triggered by user clicking on a link, the browser will render PHPServer's response inside the iframe. + +### Iframe-based rendering + +All the PHPServer responses must be rendered in an iframe to avoid reloading the page. Remember, the entire setup only lives as long as the main `index.html`. We want to avoid reloading the main app at all cost. + +In our app example above, `index.php` renders the following HTML: + +```html +Go to page.php +``` + +Imagine our `index.html` rendered it in a `
` instead of an ` +``` + +This time, clicking the link the browser to load `page.php` **inside the iframe**. The top-level index.html where the PHP application runs remains unaffected. This is why iframes are a crucial part of the `php-wasm-browser` setup. + +#### Iframes caveats + +- `target="_top"` isn't handled yet. This means that clicking on `Click here` will reload the main browser tab. +- JavaScript popup windows originating in the iframe may not work correctly yet. + +### PHP Worker Threads + +The PHP Server is always ran in a separate thread we'll call a "Worker Thread." This happens to ensure the PHP runtime doesn't slow down the website. + +Imagine the following code: + +```js + + +``` + +As soon as you click that button the browser will freeze and you won't be able to type in the input. That's just how browsers work. Whether it's a for loop or a PHP server, running intensive tasks slows down the user interface. + +#### Initiating the worker thread + +Worker threads are separate programs that can process heavy tasks outside of the main application. They must be initiated by the main JavaScript program living in the browser tab. Here's how: + +```js +const workerThread = await spawnPHPWorkerThread( + // Worker Thread backend – either 'iframe' or 'webworker' + 'webworker', + // Must point to a valid worker thread script: + '/worker-thread.js' +); +workerThread.eval(` +``` + +**/worker-thread.js**: + +```js +import { initializeWorkerThread } from 'php-wasm-browser'; +initializeWorkerThread(); +``` + +### Service Workers + +[A Service Worker](https://developer.mozilla.org/en-US/docs/Web/API/Service_Worker_API/Using_Service_Workers) is used to handle the HTTP traffic using the in-browser PHPServer. + +Imagine your PHP script renders the following page [in the iframe viewport](#iframe-based-rendering): + +```html + + + John's Website + + + Homepage + Blog + Contact + + +``` + +When the user clicks, say the `Blog` link, the browser would normally send a HTTP request to the remote server to fetch the `/blog` page and then display it instead of the current iframe contents. However, our app isn't running on the remote server. The browser would just display a 404 page. + +Enter [Service Workers](https://developer.mozilla.org/en-US/docs/Web/API/Service_Worker_API/Using_Service_Workers) – a tool to intercept the HTTP requests and handle them inside the browser. + +#### Service Worker setup + +The main application living in `/index.html` is responsible for registering the service worker. + +Here's the minimal setup: + +**/app.js:** + +```js +import { registerServiceWorker } from 'php-wasm-browser'; + +function main() { + // Must point to a valid Service Worker implementation: + await registerServiceWorker( '/service-worker.js' ); +} +``` + +You will also need a separate `/service-worker.js` file that actually intercepts and routes the HTTP requests. Here's what a minimal implementation looks like: + +**/service-worker.js**: + +```js +import { initializeServiceWorker } from 'php-wasm-browser'; + +// Intercepts all HTTP traffic on the current domain and +// passes it to the Worker Thread. +initializeServiceWorker(); +``` + +### Cross-process communication + +`php-wasm-browser` implements request/response dynamics on top of JavaScript's `postMessage`. + +If `postMessage` sounds unfamiliar, it's what JavaScript threads use to communicate. Please review the [MDN Docs](https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage) before continuing. + +By default, `postMessage` does not offer any request/response mechanics. You may send messages to another thread and you may independently receive messages from it, but you can't send a message and await a response to that specific message. + +The idea is to include a unique `requestId` in every message sent, and then wait for a message referring to the same `requestId`. + +See the [messaging module docs](./src/messaging.js) for more details. + +### Scopes + +Scopes keep your app working when you open it in two different different browser tabs. + +The Service Worker passes the intercepted HTTP requests to the PHPServer for rendering. Technically, it sends a message through a [`BroadcastChannel`](https://developer.mozilla.org/en-US/docs/Web/API/BroadcastChannel) which then gets delivered to every browser tab where the application is open. This is undesirable, slow, and leads to unexpected behaviors. + +Unfortunately, the Service Worker cannot directly communicate with the relevant Worker Thread – see [PR #31](https://github.com/WordPress/wordpress-wasm/pull/31) and [issue #9](https://github.com/WordPress/wordpress-wasm/issues/9) for more details. + +Scopes enable each browser tab to: + +- Brand the outgoing HTTP requests with a unique tab id +- Ignore any `BroadcastChannel` messages with a different id + +Technically, a scope is a string included in the `PHPServer.absoluteUrl`. For example: + +- In an **unscoped app**, `/index.php` would be available at `http://localhost:8778/wp-login.php` +- In an **scoped app**, `/index.php` would be available at `http://localhost:8778/scope:96253/wp-login.php` + +The service worker is aware of this concept and will attach the `/scope:` found in the request URL to the related `BroadcastChannel` communication. + +To use scopes, initiate the worker thread with a scoped `absoluteUrl`: + +```js +import { startPHP, PHPServer, PHPBrowser } from 'php-wasm'; +import { initializeWorkerThread } from 'php-wasm-browser'; +import { setURLScope } from 'php-wasm-browser'; + +async function main() { + const php = await startPHP(import('/php.js')); + + // Don't use the absoluteURL directly: + const absoluteURL = 'http://127.0.0.1'; + + // Instead, set the scope first: + const scope = Math.random().toFixed(16); + const scopedURL = setURLScope(absoluteURL, scope).toString(); + + const server = new PHPServer(php, { + documentRoot: '/var/www', + absoluteUrl: scopedURL + }); + + const browser = await new PHPBrowser(server); + + await initializeWorkerThread({ + phpBrowser: browser + }); +} +``` + +## Utilities + +### cloneResponseMonitorProgress + +Clones a fetch Response object and returns a version +that calls the `onProgress` callback as the progress +changes. + +_Parameters_ + +- _response_ `Response`: The fetch Response object to clone. +- _onProgress_ `(Progress) => undefined)`: The callback to call when the download progress changes. + +### EmscriptenDownloadMonitor + +Monitors the download progress of Emscripten modules + +Usage: + +```js + const downloadMonitor = new EmscriptenDownloadMonitor(); + const php = await startPHP( + phpLoaderModule, + 'web', + downloadMonitor.phpArgs + ); + downloadMonitor.addEventListener('progress', (e) => { + console.log( e.detail.progress); + }) +``` + +_Type_ + +- `EmscriptenDownloadMonitor` diff --git a/packages/php-wasm-browser/docs/boot-sequence.png b/packages/php-wasm-browser/docs/boot-sequence.png new file mode 100644 index 0000000000..89e80cbb9e Binary files /dev/null and b/packages/php-wasm-browser/docs/boot-sequence.png differ diff --git a/packages/php-wasm-browser/docs/data-flow.png b/packages/php-wasm-browser/docs/data-flow.png new file mode 100644 index 0000000000..00f973415b Binary files /dev/null and b/packages/php-wasm-browser/docs/data-flow.png differ diff --git a/packages/php-wasm-browser/src/download-monitor.js b/packages/php-wasm-browser/src/emscripten-download-monitor.js similarity index 55% rename from packages/php-wasm-browser/src/download-monitor.js rename to packages/php-wasm-browser/src/emscripten-download-monitor.js index b598897c39..a0af8b8829 100644 --- a/packages/php-wasm-browser/src/download-monitor.js +++ b/packages/php-wasm-browser/src/emscripten-download-monitor.js @@ -1,8 +1,8 @@ -import { DEFAULT_BASE_URL } from "./urls"; +import { DEFAULT_BASE_URL } from "./"; /* - * Let's use 5MB as an approximation when the total number - * of bytes is missing. + * An approximate total file size to use when the actual + * total number of bytes is missing. * * This may happen when the files are compressed before transmission * and no content-length header is being sent. @@ -14,44 +14,73 @@ import { DEFAULT_BASE_URL } from "./urls"; const FALLBACK_FILE_SIZE = 5 * 1024 * 1024; /** - * Creates a proxy that observes updates to Emscripten's `dataFileDownloads` - * property where the file download progress information is stored. + * Monitors the download progress of Emscripten modules * * Usage: * ```js - * const progressMonitor = new DownloadMonitor(); - * const php = await PHP.create(PHPLoader, { - * dataFileDownloads: progressMonitor.dataFileDownloads - * }); - * progressMonitor.addEventListener('progress', (e) => { + * const downloadMonitor = new EmscriptenDownloadMonitor(); + * const php = await startPHP( + * phpLoaderModule, + * 'web', + * downloadMonitor.phpArgs + * ); + * downloadMonitor.addEventListener('progress', (e) => { * console.log( e.detail.progress); * }) * ``` */ -export default class DownloadMonitor extends EventTarget { +export class EmscriptenDownloadMonitor extends EventTarget { constructor(assetsSizes) { super(); this.assetsSizes = assetsSizes; - this.monitorWebAssemblyStreaming(); + this.#monitorWebAssemblyStreaming(); this.phpArgs = { - dataFileDownloads: this._createDataFileDownloadsProxy() + dataFileDownloads: this.#createDataFileDownloadsProxy() }; } - _createDataFileDownloadsProxy() { + /** + * Replaces the default WebAssembly.instantiateStreaming with a version + * that monitors the download progress. + */ + #monitorWebAssemblyStreaming() { + const self = this; + const instantiateStreaming = WebAssembly.instantiateStreaming; + WebAssembly.instantiateStreaming = (response, ...args) => { + const file = response.url.substring( + new URL(response.url).origin.length + 1 + ); + + const reportingResponse = cloneResponseMonitorProgress( + response, + ({ loaded, total }) => self.#notify(file, loaded, total) + ); + + return instantiateStreaming(reportingResponse, ...args); + }; + } + + /** + * Creates a `dataFileDownloads` Proxy object that can be passed + * to `startPHP` to monitor the download progress of the data + * dependencies. + * + * @returns {Object} + */ + #createDataFileDownloadsProxy() { const self = this; const dataFileDownloads = {}; // Monitor assignments like dataFileDownloads[file] = progress return new Proxy(dataFileDownloads, { set(obj, file, progress) { - self._notify(file, progress.loaded, progress.total); + self.#notify(file, progress.loaded, progress.total); // Monitor assignments like dataFileDownloads[file].total += delta obj[file] = new Proxy(JSON.parse(JSON.stringify(progress)), { set(nestedObj, prop, value) { nestedObj[prop] = value; - self._notify(file, nestedObj.loaded, nestedObj.total); + self.#notify(file, nestedObj.loaded, nestedObj.total); return true; }, }); @@ -60,24 +89,14 @@ export default class DownloadMonitor extends EventTarget { }); } - monitorWebAssemblyStreaming() { - const self = this; - const _instantiateStreaming = WebAssembly.instantiateStreaming; - WebAssembly.instantiateStreaming = (response, ...args) => { - const file = response.url.substring( - new URL(response.url).origin.length + 1 - ); - - const reportingResponse = cloneResponseMonitorProgress( - response, - ({ loaded, total }) => self._notify(file, loaded, total) - ); - - return _instantiateStreaming(reportingResponse, ...args); - }; - } - - _notify(file, loaded, total) { + /** + * Notifies about the download progress of a file. + * + * @param {string} file The file name. + * @param {number} loaded The number of bytes loaded so far. + * @param {number} total The total number of bytes to load. + */ + #notify(file, loaded, total) { if (!total) { const filename = new URL(file, DEFAULT_BASE_URL).pathname.split('/').pop(); total = this.assetsSizes[filename]; @@ -95,6 +114,23 @@ export default class DownloadMonitor extends EventTarget { } } +export default EmscriptenDownloadMonitor; + +/** + * @typedef {Object} Progress + * @property {number} loaded The number of bytes loaded so far. + * @property {number} total The total number of bytes to load. + */ + +/** + * Clones a fetch Response object and returns a version + * that calls the `onProgress` callback as the progress + * changes. + * + * @param {Response} response The fetch Response object to clone. + * @param {(Progress) => undefined)} onProgress The callback to call when the download progress changes. + * @returns + */ export function cloneResponseMonitorProgress(response, onProgress) { const contentLength = response.headers.get('content-length'); let total = parseInt(contentLength, 10) || FALLBACK_FILE_SIZE; diff --git a/packages/php-wasm-browser/src/worker-thread/iframe-worker.html b/packages/php-wasm-browser/src/iframe-worker.html similarity index 100% rename from packages/php-wasm-browser/src/worker-thread/iframe-worker.html rename to packages/php-wasm-browser/src/iframe-worker.html diff --git a/packages/php-wasm-browser/src/index.js b/packages/php-wasm-browser/src/index.js index 25faeaa7c8..52e7710996 100644 --- a/packages/php-wasm-browser/src/index.js +++ b/packages/php-wasm-browser/src/index.js @@ -1,5 +1,31 @@ -export { environment, initializeWorkerThread, loadPHPWithProgress } from './worker-thread'; -export { startPHPWorkerThread, getWorkerThreadBackend } from './worker-thread-api'; +import { startPHP } from 'php-wasm'; +import EmscriptenDownloadMonitor from './emscripten-download-monitor'; + +export { initializeWorkerThread, loadPHPWithProgress } from './worker-thread'; +export { spawnPHPWorkerThread } from './spawn-worker-thread'; +export { setURLScope } from './scope'; export { registerServiceWorker, initializeServiceWorker, seemsLikeAPHPServerPath } from './service-worker'; -export { postMessageExpectReply, awaitReply, responseTo, messageHandler, postMessageHandler } from './messaging'; -export { cloneResponseMonitorProgress } from './download-monitor'; +export { postMessageExpectReply, awaitReply, responseTo } from './messaging'; +export { cloneResponseMonitorProgress } from './emscripten-download-monitor'; + +/** + * The default base used to convert a path into the URL object. + */ +export const DEFAULT_BASE_URL = 'http://example.com'; + +/** + * Returns a string representing the path, query, and + * fragment of the given URL. + * + * @example + * ```js + * const url = new URL('http://example.com/foo/bar?baz=qux#quux'); + * getPathQueryFragment(url); // '/foo/bar?baz=qux#quux' + * ``` + * + * @param {URL} url The URL. + * @returns {string} The path, query, and fragment. + */ +export function getPathQueryFragment(url) { + return url.toString().substring(url.origin.length); +} diff --git a/packages/php-wasm-browser/src/messaging.js b/packages/php-wasm-browser/src/messaging.js index 9761492cf8..1a7e730cd5 100644 --- a/packages/php-wasm-browser/src/messaging.js +++ b/packages/php-wasm-browser/src/messaging.js @@ -1,76 +1,120 @@ -export const DEFAULT_REPLY_TIMEOUT = 25000; +/** + * Implements request/response dynamics on top of JavaScript's `postMessage` + * + * @example + * + * In the main app: + * + * ```js + * import { postMessageExpectReply, awaitReply } from 'php-wasm-browser'; + * const iframeWindow = iframe.contentWindow; + * const requestId = postMessageExpectReply(iframeWindow, { + * type: "get_php_version" + * }); + * const response = await awaitReply(iframeWindow, requestId); + * console.log(response); + * // "8.0.24" + * ``` + * + * In the iframe: + * + * ```js + * import { responseTo } from 'php-wasm-browser'; + * window.addEventListener('message', (event) => { + * let response = '8.0.24'; + * if(event.data.type === 'get_php_version') { + * response = '8.0.24'; + * } else { + * throw new Error(`Unexpected message type: ${event.data.type}`); + * } + * + * // When `requestId` is present, the other thread expects a response: + * if (event.data.requestId) { + * const response = responseTo(event.data.requestId, response); + * window.parent.postMessage(response, event.origin); + * } + * }); + * ``` + */ -let lastMessageId = 0; +const DEFAULT_RESPONSE_TIMEOUT = 25000; + +let lastRequestId = 0; + +/** + * Posts a message branded with a unique `requestId` to the given `target`. + * Then returns the `requestId` so it can be used to await a reply. + * + * @param {Object} target An object that has a `postMessage` method. + * @param {Object.} message A key-value object that can be serialized to JSON. + * @param {...any} postMessageArgs Optional. Additional arguments to pass to `postMessage`. + * @returns {number} The message ID for awaitReply(). + */ export function postMessageExpectReply( - messageTarget, + target, message, ...postMessageArgs ) { - const messageId = ++lastMessageId; - messageTarget.postMessage( + const requestId = ++lastRequestId; + target.postMessage( { ...message, - messageId, + requestId, }, ...postMessageArgs ); - return messageId; + return requestId; } +/** + * Awaits a reply to the message with the given ID. + * + * @throws {Error} If the reply is not received within the timeout. + * @param {Object} messageTarget EventEmitter emitting `message` events, e.g. `window` + * or a `Worker` instance. + * @param {Number} requestId The message ID returned by postMessageExpectReply(). + * @param {Number} timeout Optional. The number of milliseconds to wait for a reply before + * throwing an error. + * @returns {Promise} The reply from the messageTarget. + */ export async function awaitReply( messageTarget, - messageId, - timeout = DEFAULT_REPLY_TIMEOUT + requestId, + timeout = DEFAULT_RESPONSE_TIMEOUT ) { return new Promise((resolve, reject) => { const responseHandler = (event) => { if ( event.data.type === "response" && - event.data.messageId === messageId + event.data.requestId === requestId ) { messageTarget.removeEventListener("message", responseHandler); clearTimeout(failOntimeout); - resolve(event.data.result); + resolve(event.data.response); } }; + const failOntimeout = setTimeout(() => { reject(new Error("Request timed out")); messageTarget.removeEventListener("message", responseHandler); }, timeout); + messageTarget.addEventListener("message", responseHandler); }); } -export function responseTo(messageId, result) { +/** + * Creates a response message to the given message ID. + * + * @param {Number} requestId The message ID sent from the other thread by + * `postMessageExpectReply` in the `message` event. + * @param {Object} response The response to send back to the messageTarget. + * @returns {Object} A message object that can be sent back to the other thread. + */ +export function responseTo(requestId, response) { return { type: "response", - messageId, - result, + requestId, + response, }; } - -export function messageHandler(handler) { - return async function(event, respond) { - const result = await handler(event.data); - - // When `messageId` is present, the main thread expects a response: - if (event.data.messageId) { - respond(responseTo(event.data.messageId, result)); - } - } -} - -export function postMessageHandler(handler) { - return async function (event) { - const result = await handler(event.data); - - // When `messageId` is present, the main thread expects a response: - if (event.data.messageId) { - window.parent.postMessage( - responseTo(event.data.messageId, result), - event.origin - ); - } - } -} - diff --git a/packages/php-wasm-browser/src/scope.js b/packages/php-wasm-browser/src/scope.js new file mode 100644 index 0000000000..13ff8864e9 --- /dev/null +++ b/packages/php-wasm-browser/src/scope.js @@ -0,0 +1,116 @@ +/** + * Scopes are unique strings, like `96253`, used to uniquely brand + * the outgoing HTTP traffic from each browser tab. This helps the + * main thread distinguish between the relevant and irrelevant BroadcastChannel + * messages from the Service Worker. + * + * Scopes are included in the `PHPServer.absoluteUrl` as follows: + * + * An **unscoped** URL: http://localhost:8778/wp-login.php + * A **scoped** URL: http://localhost:8778/scope:96253/wp-login.php + * + * For more information, see the README section on scopes. + */ + +/** + * Checks if the given URL contains scope information. + * + * @example + * ```js + * isURLScoped(new URL('http://localhost/scope:96253/index.php')); + * // true + * + * isURLScoped(new URL('http://localhost/index.php')); + * // false + * ``` + * + * @param {URL} url The URL to check. + * @returns {boolean} `true` if the URL contains scope information, `false` otherwise. + */ +export function isURLScoped(url) { + return url.pathname.startsWith(`/scope:`); +} + +/** + * Returns the scope stored in the given URL. + * + * @example + * ```js + * getScopeFromURL(new URL('http://localhost/scope:96253/index.php')); + * // '96253' + * + * getScopeFromURL(new URL('http://localhost/index.php')); + * // null + * ``` + * + * @param {URL} url The URL. + * @returns {string} The scope if the URL contains a scope, `null` otherwise. + */ +export function getURLScope(url) { + if (isURLScoped(url)) { + return url.pathname.split('/')[1].split(':')[1]; + } + return null; +} + +/** + * Returns a new URL with the requested scope information. + * + * @example + * ```js + * setURLScope(new URL('http://localhost/index.php'), '96253'); + * // URL('http://localhost/scope:96253/index.php') + * + * setURLScope(new URL('http://localhost/scope:96253/index.php'), '12345'); + * // URL('http://localhost/scope:12345/index.php') + * + * setURLScope(new URL('http://localhost/index.php'), null); + * // URL('http://localhost/index.php') + * ``` + * + * @param {URL} url The URL to scope. + * @param {string} scope The scope value. + * @returns {URL} A new URL with the scope information in it. + */ +export function setURLScope(url, scope) { + if (!scope) { + return url; + } + const newUrl = new URL(url); + + if (isURLScoped(newUrl)) { + const parts = newUrl.pathname.split('/'); + parts[1] = `scope:${scope}`; + newUrl.pathname = parts.join('/'); + } else { + const suffix = newUrl.pathname === '/' ? '' : newUrl.pathname; + newUrl.pathname = `/scope:${scope}${suffix}`; + } + + return newUrl; +} + +/** + * Returns a new URL without any scope information. + * + * @example + * ```js + * removeURLScope(new URL('http://localhost/scope:96253/index.php')); + * // URL('http://localhost/index.php') + * + * removeURLScope(new URL('http://localhost/index.php')); + * // URL('http://localhost/index.php') + * ``` + * + * @param {URL} url The URL to remove scope information from. + * @returns {URL} A new URL without the scope information. + */ +export function removeURLScope(url) { + if (!isURLScoped(url)) { + return url; + } + const newUrl = new URL(url); + const parts = newUrl.pathname.split('/'); + newUrl.pathname = '/' + parts.slice(2).join('/'); + return newUrl; +} diff --git a/packages/php-wasm-browser/src/service-worker.js b/packages/php-wasm-browser/src/service-worker.js index 982d90001b..17f7c07399 100644 --- a/packages/php-wasm-browser/src/service-worker.js +++ b/packages/php-wasm-browser/src/service-worker.js @@ -1,71 +1,10 @@ import { postMessageExpectReply, awaitReply, responseTo } from './messaging.js'; -import { - getPathQueryFragment, - getURLScope, - isURLScoped, - removeURLScope, -} from './urls'; +import { getURLScope, isURLScoped, removeURLScope } from './scope'; +import { getPathQueryFragment } from './'; /** - * Run this in the main application to register the service worker. - * - * It will handle all the PHP HTTP requests the browser makes on - * the domain it's registered on. - * - * @param {Object} config - */ -export async function registerServiceWorker({ broadcastChannel, url, onRequest, scope }) { - if (!broadcastChannel) { - throw new Error('Missing the required `broadcastChannel` option.'); - } - if (!navigator.serviceWorker) { - throw new Error('Service workers are not supported in this browser.'); - } - - const registration = await navigator.serviceWorker.register(url); - await registration.update(); - broadcastChannel.addEventListener( - 'message', - async function onMessage(event) { - /** - * Ignore events meant for other PHP instances to - * avoid handling the same event twice. - * - * This is important because BroadcastChannel transmits - * events to all the listeners across all browser tabs. - */ - if (scope && event.data.scope !== scope) { - return; - } - console.debug( - `[Main] "${event.data.type}" message received from a service worker` - ); - - let result; - if (event.data.type === 'request') { - result = await onRequest(event.data.request); - } else { - throw new Error( - `[Main] Unexpected message received from the service-worker: "${event.data.type}"` - ); - } - - // The service worker expects a response when it includes a `messageId` in the message: - if (event.data.messageId) { - broadcastChannel.postMessage( - responseTo(event.data.messageId, result) - ); - } - console.debug(`[Main] "${event.data.type}" message processed`, { - result, - }); - } - ); - navigator.serviceWorker.startMessages(); -} - -/** - * Run this in the service worker to install the required event handlers. + * Run this function in the service worker to install the required event + * handlers. * * @param {Object} config */ @@ -74,7 +13,7 @@ export function initializeServiceWorker({ shouldForwardRequestToPHPServer=(request, unscopedUrl)=>seemsLikeAPHPServerPath(unscopedUrl.pathname) }) { if (!broadcastChannel) { - throw new Error('Missing the required `broadcastChannel` option.'); + broadcastChannel = new BroadcastChannel('php-wasm-browser'); } /** @@ -94,8 +33,8 @@ export function initializeServiceWorker({ }); /** - * The main method. It captures the requests and loop them back to the main - * application using the Loopback request + * The main method. It captures the requests and loop them back to the + * Worker Thread using the Loopback request */ self.addEventListener('fetch', (event) => { const url = new URL(event.request.url); @@ -157,21 +96,17 @@ export function initializeServiceWorker({ }, }; console.log( - '[ServiceWorker] Forwarding a request to the main app', - { - message, - } + '[ServiceWorker] Forwarding a request to the Worker Thread', + { message } ); - const messageId = postMessageExpectReply( + const requestId = postMessageExpectReply( broadcastChannel, message ); - phpResponse = await awaitReply(broadcastChannel, messageId); + phpResponse = await awaitReply(broadcastChannel, requestId); console.log( '[ServiceWorker] Response received from the main app', - { - phpResponse, - } + { phpResponse } ); } catch (e) { console.error(e, { requestedPath }); @@ -189,6 +124,22 @@ export function initializeServiceWorker({ }); } +/** + * Guesses whether the given path looks like a PHP file. + * + * @example + * ```js + * seemsLikeAPHPServerPath('/index.php') // true + * seemsLikeAPHPServerPath('/index.php') // true + * seemsLikeAPHPServerPath('/index.php/foo/bar') // true + * seemsLikeAPHPServerPath('/index.html') // false + * seemsLikeAPHPServerPath('/index.html/foo/bar') // false + * seemsLikeAPHPServerPath('/') // true + * ``` + * + * @param {string} path The path to check. + * @returns {boolean} Whether the path seems like a PHP server path. + */ export function seemsLikeAPHPServerPath(path) { return ( seemsLikeAPHPFile(path) || @@ -263,3 +214,18 @@ async function parsePost(request) { ...overrides, }); } + +/** + * Run this in the main application to register the service worker. + * + * @param {string} scriptUrl The URL of the service worker script. + */ + export async function registerServiceWorker( scriptUrl ) { + if (!navigator.serviceWorker) { + throw new Error('Service workers are not supported in this browser.'); + } + + const registration = await navigator.serviceWorker.register(scriptUrl); + await registration.update(); + navigator.serviceWorker.startMessages(); + } diff --git a/packages/php-wasm-browser/src/spawn-worker-thread.js b/packages/php-wasm-browser/src/spawn-worker-thread.js new file mode 100644 index 0000000000..9311db6aad --- /dev/null +++ b/packages/php-wasm-browser/src/spawn-worker-thread.js @@ -0,0 +1,165 @@ +import { postMessageExpectReply, awaitReply } from './messaging'; +import { setURLScope, removeURLScope } from './scope'; +import { getPathQueryFragment } from './'; + +const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms)); +const noop = () => {}; + +/** + * @typedef {Object} WorkerThreadConfig + * @property {Function} onDownloadProgress Optional. A function to call when a download + * progress event is received from the worker + */ + +/** + * Spawns a new Worker Thread. + * + * @property {string} backendName The Worker Thread backend to use. Either 'webworker' or 'iframe'. + * @property {string} workerScriptUrl The absolute URL of the worker script. + * @param {WorkerThreadConfig} config + * @returns {SpawnedWorkerThread} The spawned Worker Thread. + */ +export async function spawnPHPWorkerThread(backendName, workerScriptUrl, { + onDownloadProgress = noop, +}) { + let messageChannel; + if (backendName === 'webworker') { + messageChannel = spawnWebWorker(workerScriptUrl); + } else if (backendName === 'iframe') { + messageChannel = spawnIframeWorker(workerScriptUrl); + } else { + throw new Error(`Unknown backendName: ${backendName}`); + } + + messageChannel.setMessageListener((e) => { + if (e.data.type === 'download_progress') { + onDownloadProgress(e.data); + } + }); + + // Keep asking if the worker is alive until we get a response + while (true) { + try { + await messageChannel.sendMessage({ type: 'is_alive' }, 50); + break; + } catch (e) { + // Ignore timeouts + } + await sleep(50); + } + + const absoluteUrl = await messageChannel.sendMessage({ + type: 'get_absolute_url' + }); + + return new SpawnedWorkerThread(messageChannel, absoluteUrl); +} + +class SpawnedWorkerThread { + + constructor(messageChannel, serverUrl) { + this.messageChannel = messageChannel; + this.serverUrl = serverUrl; + } + + /** + * Converts a path to an absolute URL based at the PHPServer + * root. + * + * @param {string} path The server path to convert to an absolute URL. + * @returns {string} The absolute URL. + */ + pathToInternalUrl(path) { + return `${this.serverUrl}${path}`; + } + + /** + * Converts an absolute URL based at the PHPServer to a relative path + * without the server pathname and scope. + * + * @param {string} internalUrl An absolute URL based at the PHPServer root. + * @returns {string} The relative path. + */ + internalUrlToPath(internalUrl) { + return getPathQueryFragment(removeURLScope(new URL(internalUrl))); + } + + /** + * Runs PHP code. + * + * @param {string} code The PHP code to run. + * @returns {Promise} The result of the PHP code. + */ + async eval(code) { + return await this.messageChannel.sendMessage({ + type: 'run_php', + code, + }); + } + + /** + * Dispatches a request to the PHPServer. + * + * @param {Request} request The request to dispatch. + * @returns {Promise} The response from the PHPServer. + */ + async HTTPRequest(request) { + return await this.messageChannel.sendMessage({ + type: 'request', + request, + }); + } +} + +/** + * @typedef {import('php-wasm/src/php').Output} Output + */ +/** + * @typedef {import('php-wasm/src/php-server').Request} Request + */ +/** + * @typedef {import('php-wasm/src/php-server').Response} Response + */ + +function spawnWebWorker(workerURL) { + const worker = new Worker(workerURL); + return { + async sendMessage(message, timeout) { + const requestId = postMessageExpectReply(worker, message); + const response = await awaitReply(worker, requestId, timeout); + return response; + }, + setMessageListener(listener) { + worker.onmessage = listener; + }, + }; +} + +function spawnIframeWorker(workerDocumentURL) { + const iframe = document.createElement('iframe'); + iframe.src = workerDocumentURL; + iframe.style.display = 'none'; + document.body.appendChild(iframe); + return { + async sendMessage(message, timeout) { + const requestId = postMessageExpectReply( + iframe.contentWindow, + message, + '*' + ); + const response = await awaitReply(window, requestId, timeout); + return response; + }, + setMessageListener(listener) { + window.addEventListener( + 'message', + (e) => { + if (e.source === iframe.contentWindow) { + listener(e); + } + }, + false + ); + }, + }; +} diff --git a/packages/php-wasm-browser/src/urls.js b/packages/php-wasm-browser/src/urls.js deleted file mode 100644 index 89d58bccf1..0000000000 --- a/packages/php-wasm-browser/src/urls.js +++ /dev/null @@ -1,44 +0,0 @@ - -export const DEFAULT_BASE_URL = 'http://example.com'; - -export function getPathQueryFragment(url) { - return url.toString().substring(url.origin.length); -} - -export function isURLScoped(url) { - return url.pathname.startsWith(`/scope:`); -} - -export function getURLScope(url) { - if (isURLScoped(url)) { - return url.pathname.split('/')[1].split(':')[1]; - } - return null; -} - -export function setURLScope(url, scope) { - if (!scope) { - return url; - } - const newUrl = new URL(url); - - if (isURLScoped(newUrl)) { - const parts = newUrl.pathname.split('/'); - parts[1] = `scope:${scope}`; - newUrl.pathname = parts.join('/'); - } else { - const suffix = newUrl.pathname === '/' ? '' : newUrl.pathname; - newUrl.pathname = `/scope:${scope}${suffix}`; - } - - return newUrl; -} -export function removeURLScope(url) { - if (!isURLScoped(url)) { - return url; - } - const newUrl = new URL(url); - const parts = newUrl.pathname.split('/'); - newUrl.pathname = '/' + parts.slice(2).join('/'); - return newUrl; -} diff --git a/packages/php-wasm-browser/src/worker-thread-api.js b/packages/php-wasm-browser/src/worker-thread-api.js deleted file mode 100644 index cae02b6b97..0000000000 --- a/packages/php-wasm-browser/src/worker-thread-api.js +++ /dev/null @@ -1,142 +0,0 @@ -import { postMessageExpectReply, awaitReply } from './messaging'; -import { setURLScope, getPathQueryFragment, removeURLScope } from './urls'; - -const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms)); -const noop = () => {}; - -export async function startPHPWorkerThread({ - backend, - absoluteUrl, - scope, - onDownloadProgress = noop, -}) { - // Keep asking if the worker is alive until we get a response - while (true) { - try { - await backend.sendMessage({ type: 'is_alive' }, 50); - break; - } catch (e) { - // Ignore timeouts - } - await sleep(50); - } - - /** - * Scoping a PHP instance means hosting it on a - * path starting with `/scope:`. This helps WASM workers - * avoid rendering any requests meant for other WASM workers. - * - * @see registerServiceWorker for more details - */ - if (scope) { - absoluteUrl = setURLScope(new URL(absoluteUrl), scope).toString(); - } - - backend.addMessageListener((e) => { - if (e.data.type === 'download_progress') { - onDownloadProgress(e.data); - } - }); - - // Now that the worker thread is up and running, let's ask - // it to initialize PHP: - await backend.sendMessage({ - type: 'initialize_php', - absoluteUrl: absoluteUrl, - }); - - return { - pathToInternalUrl(path) { - return `${absoluteUrl}${path}`; - }, - internalUrlToPath(internalUrl) { - return getPathQueryFragment(removeURLScope(new URL(internalUrl))); - }, - async eval(code) { - return await backend.sendMessage({ - type: 'run_php', - code, - }); - }, - async HTTPRequest(request) { - return await backend.sendMessage({ - type: 'request', - request, - }); - }, - }; -} - -export function getWorkerThreadBackend(key, url) { - const backends = { - webworker: webWorkerBackend, - shared_worker: sharedWorkerBackend, - iframe: iframeBackend, - }; - const backend = backends[key]; - if (!backend) { - const availableKeys = Object.keys(backends).join(', '); - throw new Error( - `Unknown worker backend: "${key}". Choices: ${availableKeys}` - ); - } - return backend(url); -} - -export function webWorkerBackend(workerURL) { - const worker = new Worker(workerURL); - return { - async sendMessage(message, timeout) { - const messageId = postMessageExpectReply(worker, message); - const response = await awaitReply(worker, messageId, timeout); - return response; - }, - addMessageListener(listener) { - worker.onmessage = listener; - }, - }; -} - -export function sharedWorkerBackend(workerURL) { - const worker = new SharedWorker(workerURL); - worker.port.start(); - return { - async sendMessage(message, timeout) { - const messageId = postMessageExpectReply(worker.port, message); - const response = await awaitReply(worker.port, messageId, timeout); - return response; - }, - addMessageListener(listener) { - worker.port.onmessage = listener; - }, - }; -} - -export function iframeBackend(workerDocumentURL) { - const iframe = document.createElement('iframe'); - iframe.src = workerDocumentURL; - iframe.style.display = 'none'; - document.body.appendChild(iframe); - return { - async sendMessage(message, timeout) { - const messageId = postMessageExpectReply( - iframe.contentWindow, - message, - '*' - ); - const response = await awaitReply(window, messageId, timeout); - return response; - }, - addMessageListener(listener) { - window.addEventListener( - 'message', - (e) => { - if (e.source === iframe.contentWindow) { - listener(e); - } - }, - false - ); - }, - }; -} diff --git a/packages/php-wasm-browser/src/worker-thread.js b/packages/php-wasm-browser/src/worker-thread.js new file mode 100644 index 0000000000..88e8d20647 --- /dev/null +++ b/packages/php-wasm-browser/src/worker-thread.js @@ -0,0 +1,235 @@ +/* eslint-disable no-inner-declarations */ + +import { startPHP, PHPBrowser, PHPServer } from 'php-wasm'; +import { responseTo } from './messaging'; +import { DEFAULT_BASE_URL } from './'; +import EmscriptenDownloadMonitor, { cloneResponseMonitorProgress } from './emscripten-download-monitor'; +import { getURLScope } from './scope'; + +const noop = () => { }; +/** + * Call this in a worker thread script to set the stage for + * offloading the PHP processing. This function: + * + * * Initializes the PHP runtime + * * Starts PHPServer and PHPBrowser + * * Lets the main app know when its ready + * * Listens for messages from the main app + * * Runs the requested operations (like `run_php`) + * * Replies to the main app with the results using the [request/reply protocol](#request-reply-protocol) + * + * Remember: The worker thread code must live in a separate JavaScript file. + * + * A minimal worker thread script looks like this: + * + * ```js + * import { initializeWorkerThread } from 'php-wasm-browser'; + * initializeWorkerThread(); + * ``` + * + * You can customize the PHP loading flow via the first argument: + * + * ```js + * import { initializeWorkerThread, loadPHPWithProgress } from 'php-wasm-browser'; + * initializeWorkerThread( bootBrowser ); + * + * async function bootBrowser({ absoluteUrl }) { + * const [phpLoaderModule, myDependencyLoaderModule] = await Promise.all([ + * import(`/php.js`), + * import(`/wp.js`) + * ]); + * + * const php = await loadPHPWithProgress(phpLoaderModule, [myDependencyLoaderModule]); + * + * const server = new PHPServer(php, { + * documentRoot: '/www', + * absoluteUrl: absoluteUrl + * }); + * + * return new PHPBrowser(server); + * } + * ``` + * + * @param {WorkerThreadConfiguration} configuration The worker thread configuration. + * @return {Object} The backend object to communicate with the parent thread. + */ +export async function initializeWorkerThread({ + phpBrowser, + broadcastChannel +}) { + if (!phpBrowser) { + phpBrowser = await defaultBootBrowser(); + } + if (!broadcastChannel) { + broadcastChannel = new BroadcastChannel('php-wasm-browser'); + } + + const absoluteUrl = phpBrowser.server.absoluteUrl; + const scope = getURLScope(new URL(absoluteUrl)); + + // Handle postMessage communication from the main thread + currentBackend.setMessageListener(async event => { + const result = await handleMessage(event.data); + + // When `requestId` is present, the other thread expects a response: + if (event.data.requestId) { + const response = responseTo(event.data.requestId, result); + currentBackend.postMessageToParent(response); + } + }); + + broadcastChannel.addEventListener('message', async function onMessage(event) { + console.log('broadcastChannel message', event); + /** + * Ignore events meant for other PHP instances to + * avoid handling the same event twice. + * + * This is important because BroadcastChannel transmits + * events to all the listeners across all browser tabs. + */ + if (scope && event.data.scope !== scope) { + return; + } + + const result = await handleMessage(event.data); + + // The service worker expects a response when it includes a `requestId` in the message: + if (event.data.requestId) { + const response = responseTo(event.data.requestId, result); + broadcastChannel.postMessage(response); + } + }); + + async function handleMessage(message) { + console.debug( + `[Worker Thread] "${message.type}" message received from a service worker` + ); + + if (message.type === 'is_alive') { + return true; + } + else if (message.type === 'get_absolute_url') { + return phpBrowser.server.absoluteUrl; + } + else if (message.type === 'run_php') { + return await phpBrowser.server.php.run(message.code); + } + else if (message.type === 'request') { + return await renderRequest(message.request); + } + else { + throw new Error( + `[Worker Thread] Received unexpected message: "${message.type}"` + ); + } + } + + async function renderRequest(request) { + const parsedUrl = new URL(request.path, DEFAULT_BASE_URL); + return await phpBrowser.request({ + ...request, + path: parsedUrl.pathname, + queryString: parsedUrl.search, + }); + } + + return currentBackend; +} + +/** + * @typedef {Object} WorkerThreadConfiguration + * @property {PHPBrowser} [phpBrowser] Optional. The PHP browser instance to use. + * @property {BroadcastChannel} [broadcastChannel] Optional. The broadcast channel to use for communication + * with the service worker. + */ + +async function defaultBootBrowser({ absoluteUrl = location.origin } = {}) { + return new PHPBrowser( + new PHPServer( + await startPHP('/php.js', currentBackend.jsEnv), + { absoluteUrl } + ) + ) +} + +const webBackend = { + jsEnv: 'WEB', // Matches the Env argument in php.js + setMessageListener(handler) { + window.addEventListener( + 'message', + (event) => + handler(event, (response) => + event.source.postMessage(response, '*') + ), + false + ); + }, + postMessageToParent(message) { + window.parent.postMessage(message, '*'); + } +} + +const webWorkerBackend = { + jsEnv: 'WORKER', // Matches the Env argument in php.js + setMessageListener(handler) { + onmessage = (event) => { + handler(event, postMessage); + }; + }, + postMessageToParent(message) { + postMessage(message); + } +} + +/** + * @returns + */ +export const currentBackend = (function () { + /* eslint-disable no-undef */ + if (typeof window !== 'undefined') { + return webBackend; + } else if (typeof WorkerGlobalScope !== 'undefined' && + self instanceof WorkerGlobalScope) { + return webWorkerBackend; + } else { + throw new Error(`Unsupported environment`); + } + /* eslint-enable no-undef */ +})(); + + +/** + * Call this in a Worker Thread to start load the PHP runtime + * and post the progress to the main thread. + * + * @see startPHP + * @param {Module} phpLoaderModule The ESM-wrapped Emscripten module. Consult the Dockerfile for the build process. + * @param {Object} phpModuleArgs Optional. The Emscripten module arguments, see https://emscripten.org/docs/api_reference/module.html#affecting-execution. + * @param {Module[]} dataDependenciesModules. Optional. A list of the ESM-wrapped Emscripten data dependency modules. + * @returns {PHP} PHP instance. + */ + export async function loadPHPWithProgress(phpLoaderModule, dataDependenciesModules=[], phpArgs = {}) { + const modules = [phpLoaderModule, ...dataDependenciesModules]; + + const assetsSizes = modules.reduce((acc, module) => { + acc[module.dependencyFilename] = module.dependenciesTotalSize; + return acc; + }, {}); + const downloadMonitor = new EmscriptenDownloadMonitor(assetsSizes); + downloadMonitor.addEventListener('progress', (e) => + currentBackend.postMessageToParent({ + type: 'download_progress', + ...e.detail, + }) + ); + + return await startPHP( + phpLoaderModule, + currentBackend.jsEnv, + { + ...phpArgs, + ...downloadMonitor.phpArgs + }, + dataDependenciesModules + ); + } diff --git a/packages/php-wasm-browser/src/worker-thread/environment.js b/packages/php-wasm-browser/src/worker-thread/environment.js deleted file mode 100644 index d46bae65c6..0000000000 --- a/packages/php-wasm-browser/src/worker-thread/environment.js +++ /dev/null @@ -1,47 +0,0 @@ - -export const webEnvironment = { - name: 'WEB', // Matches the Env argument in php.js - setMessageListener(handler) { - window.addEventListener( - 'message', - (event) => - handler(event, (response) => - event.source.postMessage(response, '*') - ), - false - ); - }, - postMessageToParent(message) { - window.parent.postMessage(message, '*'); - } -} - -export const webWorkerEnvironment = { - name: 'WORKER', // Matches the Env argument in php.js - setMessageListener(handler) { - onmessage = (event) => { - handler(event, postMessage); - }; - }, - postMessageToParent(message) { - postMessage(message); - } -} - -/** - * @returns - */ -const currentEnvironment = (function () { - /* eslint-disable no-undef */ - if (typeof window !== 'undefined') { - return webEnvironment; - } else if (typeof WorkerGlobalScope !== 'undefined' && - self instanceof WorkerGlobalScope) { - return webWorkerEnvironment; - } else { - throw new Error(`Unsupported environment`); - } - /* eslint-enable no-undef */ -})(); - -export default currentEnvironment; diff --git a/packages/php-wasm-browser/src/worker-thread/index.js b/packages/php-wasm-browser/src/worker-thread/index.js deleted file mode 100644 index 7ea0871147..0000000000 --- a/packages/php-wasm-browser/src/worker-thread/index.js +++ /dev/null @@ -1,83 +0,0 @@ -/* eslint-disable no-inner-declarations */ - -import { startPHP, PHPBrowser, PHPServer } from 'php-wasm'; -import { responseTo, messageHandler } from '../messaging'; -import { DEFAULT_BASE_URL } from '../urls'; -import environment from './environment'; -export { environment }; -import DownloadMonitor from '../download-monitor'; - -const noop = () => {}; -export async function initializeWorkerThread(bootBrowser=defaultBootBrowser) { - // Handle postMessage communication from the main thread - environment.setMessageListener( - messageHandler(handleMessage) - ); - - let phpBrowser; - async function handleMessage(message) { - if (message.type === 'initialize_php') { - phpBrowser = await bootBrowser({ - absoluteUrl: message.absoluteUrl - }); - } - else if (message.type === 'is_alive') { - return true; - } - else if (message.type === 'run_php') { - return await phpBrowser.server.php.run(message.code); - } - else if (message.type === 'request') { - const parsedUrl = new URL( - message.request.path, - DEFAULT_BASE_URL - ); - return await phpBrowser.request({ - ...message.request, - path: parsedUrl.pathname, - _GET: parsedUrl.search, - }); - } else { - console.warn( - `[WASM Worker] "${message.type}" event received but it has no handler.` - ); - } - } -} - -async function defaultBootBrowser({ absoluteUrl }) { - return new PHPBrowser( - new PHPServer( - await PHP.create('/php.js', phpArgs), - { - absoluteUrl: absoluteUrl || location.origin - } - ) - ) -} - -export async function loadPHPWithProgress(phpLoaderModule, dataDependenciesModules=[], phpArgs = {}) { - const modules = [phpLoaderModule, ...dataDependenciesModules]; - - const assetsSizes = modules.reduce((acc, module) => { - acc[module.dependencyFilename] = module.dependenciesTotalSize; - return acc; - }, {}); - const downloadMonitor = new DownloadMonitor(assetsSizes); - downloadMonitor.addEventListener('progress', (e) => - environment.postMessageToParent({ - type: 'download_progress', - ...e.detail, - }) - ); - - return await startPHP( - phpLoaderModule, - environment.name, - { - ...phpArgs, - ...downloadMonitor.phpArgs - }, - dataDependenciesModules - ); -} diff --git a/packages/php-wasm/README.md b/packages/php-wasm/README.md new file mode 100644 index 0000000000..650dea7e79 --- /dev/null +++ b/packages/php-wasm/README.md @@ -0,0 +1,281 @@ +# Use PHP in JavaScript + +This package enables running PHP in Javascript: + +```js +import { createPHP } from 'php-wasm'; + +const PHPLoaderModule = await import('/php.js'); +const php = await createPHP(PHPLoaderModule); +console.log( + php.run(` repository when prefixed with `PHP-`. For example, `7.4.0` is valid because the branch `PHP-7.4.0` exists, but just `7` is invalid because there's no branch `PHP-7`. The PHP versions that are known to work are `7.4.*` and `8.0.*`. Others likely work as well but they haven't been tried. +- `EMSCRIPTEN_ENVIRONMENT` – `web` or `node`, default: `web`. The platform to build for. When building for `web`, two JavaScript loaders will be created: `php-web.js` and `php-webworker.js`. When building for Node.js, only one loader called `php-node.js` will be created. +- `WITH_LIBXML` – `yes` or `no`, default: `no`. Whether to build with `libxml2` and the `dom`, `xml`, and `simplexml` PHP extensions (`DOMDocument`, `SimpleXML`, ..). +- `WITH_LIBZIP` – `yes` or `no`, default: `yes`. Whether to build with `zlib`, `libzip`, and the `zip` PHP extension (`ZipArchive`). +- `WITH_VRZNO` – `yes` or `no`, default: `yes` when PHP_VERSION is 7.\*. Whether to build with [the `vrzno` PHP extension](https://github.com/seanmorris/vrzno/fork) that enables running JavaScript code from PHP. +- `WITH_NODEFS` – `yes` or `no`, default: `no`. Whether to include [the Emscripten's NODEFS JavaScript library](https://emscripten.org/docs/api_reference/Filesystem-API.html#filesystem-api-nodefs). It's useful for loading files and mounting directories from the local filesystem when running php.wasm from Node.js. + +### JavaScript module + +The `php.js` file generated by this build process is **not** a vanilla Emscripten module. Instead, it's an ESM module that wraps the regular Emscripten output and adds some extra functionality. + +Here's the API it exposes: + +```js +// php.wasm size in bytes: +export const dependenciesTotalSize = 5644199; + +// php.wasm filename: +export const dependencyFilename = 'php.wasm'; + +// Run Emscripten's generated module: +export default function(jsEnv, emscriptenModuleArgs) {} +``` + +## JavaScript bindings for the WebAssembly PHP + +`php-wasm` provides a JavaScript API to interact with the WebAssembly +module. It lives in the `src` directory and consists of: + +- A `PHP` class to directly interface with the WebAssembly module. +- A `PHPServer` class to use PHP for handling HTTP requests. +- A `PHPBrowser` class to handle cookies and redirects emitted by `PHPServer` + +### Building + +To build the JavaScript API, run `npm run build:js` in the repository root. You'll find the output files in `packages/php-wasm/build-module`. + +# API + +## php.js + +### PHP + +An environment-agnostic wrapper around the Emscripten PHP runtime +that abstracts the super low-level API and provides a more convenient +higher-level API. + +It exposes a minimal set of methods to run PHP scripts and to +interact with the PHP filesystem. + +_Related_ + +- This class is not meant to be used directly. Use `startPHP` instead. + +### startPHP + +Initializes the PHP runtime with the given arguments and data dependencies. + +This function handles the entire PHP initialization pipeline. In particular, it: + +- Instantiates the Emscripten PHP module +- Wires it together with the data dependencies and loads them +- Ensures is all happens in a correct order +- Waits until the entire loading sequence is finished + +Basic usage: + +```js + const phpLoaderModule = await import("/php.js"); + const php = await startPHP(phpLoaderModule, "web"); + console.log(php.run(`';` +3. Prepend `export const dependenciesTotalSize = ;` +4. Append `}` + +Be sure to use the \`--export-name="emscriptenPHPModule" file_packager.py option. + +You want the final output to look as follows: + +```js +export const dependenciesTotalSize = 5644199; +export const dependencyFilename = 'dependency.data'; +export default function(emscriptenPHPModule) { + // Emscripten-generated code: + var Module = typeof emscriptenPHPModule !== 'undefined' ? emscriptenPHPModule : {}; + // ... the rest of it ... +} +``` + +Such a constructions enables loading the `dependency.js` as an ES Module using +`import("/dependency.js")`. + +Once it's ready, you can load PHP and your data dependencies as follows: + +```js + const [phpLoaderModule, wordPressLoaderModule] = await Promise.all([ + import("/php.js"), + import("/wp.js") + ]); + const php = await startPHP(phpLoaderModule, "web", {}, [wordPressLoaderModule]); +``` + +_Parameters_ + +- _phpLoaderModule_ `Module`: The ESM-wrapped Emscripten module. Consult the Dockerfile for the build process. +- _jsEnv_ `string`: The current JavaScript environment. One of: NODE, WEB, or WEBWORKER. +- _phpModuleArgs_ `Object`: Optional. The Emscripten module arguments, see . +- _dataDependenciesModules._ `Module[]`: Optional. A list of the ESM-wrapped Emscripten data dependency modules. + +## php-server.js + +### default + +A fake PHP server that handles HTTP requests but does not +bind to any port. + +_Usage_ + +```js +import { createPHP, PHPServer } from 'php-wasm'; + +const PHPLoaderModule = await import('/php.js'); +const php = await createPHP(PHPLoaderModule); + +// Create a file to serve: +php.mkdirTree('/www'); +php.writeFile('/www/index.php', ' false }) { this.php = php; - this.DOCROOT = documentRoot; + this.#DOCROOT = documentRoot; this.isStaticFilePath = isStaticFilePath; const url = new URL(absoluteUrl); - this.HOSTNAME = url.hostname; - this.PORT = url.port ? url.port : url.protocol === 'https:' ? 443 : 80; - this.SCHEMA = (url.protocol || '').replace(':', ''); - this.HOST = `${this.HOSTNAME}:${this.PORT}`; - this.PATHNAME = url.pathname.replace(/\/+$/, ''); - this.ABSOLUTE_URL = `${this.SCHEMA}://${this.HOSTNAME}:${this.PORT}${this.PATHNAME}`; - } + this.#HOSTNAME = url.hostname; + this.#PORT = url.port ? url.port : url.protocol === 'https:' ? 443 : 80; + this.#PROTOCOL = (url.protocol || '').replace(':', ''); + const isNonStandardPort = this.#PORT !== 443 && this.#PORT !== 80; + this.#HOST = [ + this.#HOSTNAME, + isNonStandardPort ? `:${this.#PORT}` : '', + ].join("\n"); + this.#PATHNAME = url.pathname.replace(/\/+$/, ''); + this.#ABSOLUTE_URL = [ + `${this.#PROTOCOL}://`, + this.#HOST, + this.#PATHNAME + ].join(""); + } + + get absoluteUrl() { + return this.#ABSOLUTE_URL; + } + /** + * Serves the request – either by serving a static file, or by + * dispatching it to the PHP runtime. + * + * @param {Request} request The request. + * @returns {Response} The response. + */ async request(request) { - const unprefixedPath = this.withoutPathname(request.path); - if(this.isStaticFilePath(unprefixedPath)) { - return this.serveStaticFile(unprefixedPath); + const serverPath = this.#withoutServerPathname(request.path); + if(this.isStaticFilePath(serverPath)) { + return this.#serveStaticFile(serverPath); } else { - return await this.dispatchToPHP(request); - } - } - - withoutPathname(path) { - if (!this.PATHNAME) { - return path; + return await this.#dispatchToPHP(request); } - return path.substr(this.PATHNAME.length); } - serveStaticFile(path) { - const fsPath = `${this.DOCROOT}${path}`; + /** + * Serves a static file from the PHP filesystem. + * + * @param {string} path The requested static file path. + * @returns {Response} The response. + */ + #serveStaticFile(path) { + const fsPath = `${this.#DOCROOT}${path}`; if(!this.php.fileExists(fsPath)){ return { @@ -50,7 +102,7 @@ export default class PHPServer { headers: {}, statusCode: 404, exitCode: 0, - rawError: '', + rawError: [''], } } const arrayBuffer = this.php.readFileAsBuffer(fsPath); @@ -66,16 +118,32 @@ export default class PHPServer { 'Cache-Control': 'public, max-age=0' }, exitCode: 0, - rawError: '', + rawError: [''], }; } - async dispatchToPHP(request) { - const _FILES = await this.prepare_FILES(request.files); + /** + * Runs the requested PHP file with all the request and $_SERVER + * superglobals populated. + * + * @see #prepare_FILES for details on how JavaScript `files` are converted to $_FILES. + * @param {Request} request The request. + * @returns {Response} The response. + */ + async #dispatchToPHP(request) { + const _FILES = await this.#prepare_FILES(request.files); try { const output = await this.php.run( `_GET, 1), $_GET); + parse_str(substr($request->queryString, 1), $_GET); $_POST = $request->_POST; $_FILES = $request->_FILES; @@ -130,8 +201,6 @@ REQUEST, fwrite($stdErr, json_encode(['session' => $_SESSION]) . "\n"); - $docroot = ${JSON.stringify(this.DOCROOT)}; - $script = ltrim($request->path, '/'); $path = $request->path; @@ -139,40 +208,40 @@ REQUEST, $_SERVER['PATH'] = '/'; $_SERVER['REQUEST_URI'] = $path . ($request->_GET ?: ''); - $_SERVER['HTTP_HOST'] = ${JSON.stringify(this.HOST)}; - $_SERVER['REMOTE_ADDR'] = ${JSON.stringify(this.HOSTNAME)}; - $_SERVER['SERVER_NAME'] = ${JSON.stringify(this.ABSOLUTE_URL)}; - $_SERVER['SERVER_PORT'] = ${JSON.stringify(this.PORT)}; + $_SERVER['REQUEST_METHOD'] = $request->method; + $_SERVER['REMOTE_ADDR'] = ${JSON.stringify(this.#HOSTNAME)}; + $_SERVER['SERVER_NAME'] = ${JSON.stringify(this.#ABSOLUTE_URL)}; + $_SERVER['SERVER_PORT'] = ${JSON.stringify(this.#PORT)}; + $_SERVER['HTTPS'] = ${JSON.stringify(this.#ABSOLUTE_URL.startsWith('https://') ? 'on' : '')}; + $_SERVER['HTTP_HOST'] = ${JSON.stringify(this.#HOST)}; $_SERVER['HTTP_USER_AGENT'] = ${JSON.stringify(navigator.userAgent)}; $_SERVER['SERVER_PROTOCOL'] = 'HTTP/1.1'; - $_SERVER['REQUEST_METHOD'] = $request->method; + $_SERVER['DOCUMENT_ROOT'] = '/'; + $docroot = ${JSON.stringify(this.#DOCROOT)}; $_SERVER['SCRIPT_FILENAME'] = $docroot . '/' . $script; $_SERVER['SCRIPT_NAME'] = $docroot . '/' . $script; $_SERVER['PHP_SELF'] = $docroot . '/' . $script; - $_SERVER['DOCUMENT_ROOT'] = '/'; - $_SERVER['HTTPS'] = ${JSON.stringify(this.ABSOLUTE_URL.startsWith('https://') ? 'on' : '')}; chdir($docroot); - // === INCLUDE THE REQUESTED PHP FILE === - - // Ensure the resolved path points to an existing file. If not, - // let's fall back to index.php - $candidate_path = $docroot . '/' . ltrim('${this.resolvePHPFilePath(request.path)}', '/'); - if ( file_exists( $candidate_path ) ) { - require_once $candidate_path; - } else { - require_once $docroot . '/index.php'; - } + require_once ${JSON.stringify(this.#resolvePHPFilePath(request.path))}; ` ); - return this.parseResponse( output ); + return parseResponse( output ); } finally { - this.cleanup_FILES( _FILES ); + this.#cleanup_FILES( _FILES ); } } - resolvePHPFilePath(requestedPath) { - let filePath = this.withoutPathname(requestedPath); + /** + * Resolve the requested path to the filesystem path of the requested PHP file. + * + * Fall back to index.php as if there was a url rewriting rule in place. + * + * @param {string} requestedPath The requested pathname. + * @returns {string} The resolved filesystem path. + */ + #resolvePHPFilePath(requestedPath) { + let filePath = this.#withoutServerPathname(requestedPath); // If the path mentions a .php extension, that's our file's path. if (filePath.includes('.php')) { @@ -185,10 +254,45 @@ REQUEST, if (!filePath.endsWith('index.php')) { filePath += 'index.php'; } - } - return filePath; + } + + const resolvedFsPath = `${this.#DOCROOT}${filePath}`; + if (this.php.fileExists(resolvedFsPath)) { + return resolvedFsPath; + } else { + return `${this.#DOCROOT}/index.php`; + } } + /** + * Remove the server pathname from the requested path. + * + * This method enables including an arbitrary pathname + * in the server's absolute URL. + * + * For example, say the requestedPath is `/subdirectory/index.php` + * + * If the server's absolute URL is something like + * `http://localhost/`, this method returns the unchanged + * requestedPath. + * + * However, if the server's absolute URL is + * `http://localhost/subdirectory`, this method will return + * just `/index.php`. + * + * This way, PHPSerer can resolve just the `/index.php` instead + * of `/subdirectory/index.php` which is likely undesirable. + * + * @param {string} requestedPath The requested path. + * @returns {string} A path with the server prefix removed. + */ + #withoutServerPathname(requestedPath) { + if (!this.#PATHNAME) { + return requestedPath; + } + return requestedPath.substr(this.#PATHNAME.length); + } + /** * Prepares an object like { file1_name: File, ... } for * being processed as $_FILES in PHP. @@ -213,7 +317,7 @@ REQUEST, * @param {Object} files JavaScript files keyed by their HTTP upload name. * @return $_FILES-compatible object. */ - async prepare_FILES(files = {}) { + async #prepare_FILES(files = {}) { if(Object.keys(files).length) { this.php.initUploadedFilesHash(); } @@ -240,13 +344,13 @@ REQUEST, } /** - * Cleans up after prepare_FILES: + * Cleans up after #prepare_FILES: * * Frees the PHP's rfc1867_uploaded_files HashTable * * Removes the temporary files from the filesystem * * @param _FILES $_FILES-compatible object. */ - cleanup_FILES(_FILES={}) { + #cleanup_FILES(_FILES={}) { if(Object.keys(_FILES).length) { this.php.destroyUploadedFilesHash(); } @@ -257,59 +361,93 @@ REQUEST, } } - parseResponse(result) { - const response = { - body: result.stdout, - headers: {}, - exitCode: result.exitCode, - rawError: result.stderr, - }; - for (const row of result.stderr) { - if (!row || !row.trim()) { - continue; +} + +/** + * Turns the PHP output into a Response object. + * + * The response body is sourced from stdout, and + * the headers and status code are sourced from stderr. + * + * @param {import("./php").Output} result Raw output of PHP.run(). + * @returns {Response} Parsed response + */ +function parseResponse(result) { + const response = { + body: result.stdout, + headers: {}, + exitCode: result.exitCode, + rawError: result.stderr || [''], + }; + // Try to parse each line of stderr as JSON and + // look for familiar data structurs. + for (const row of result.stderr) { + if (!row || !row.trim()) { + continue; + } + try { + const [name, value] = JSON.parse(row); + if (name === 'headers') { + response.headers = parseHeaders(value); + break; } - try { - const [name, value] = JSON.parse(row); - if (name === 'headers') { - response.headers = this.parseHeaders(value); - break; - } - if (name === 'status_code') { - response.statusCode = value; - } - } catch (e) { - // console.error(e); - // break; + if (name === 'status_code') { + response.statusCode = value; } + } catch (e) { + // console.error(e); + // break; } - if (!response.statusCode) { - response.statusCode = 200; - } - // X-frame-options gets in a way when PHP is - // being displayed in an iframe. - // @TODO: Make it configurable. - delete response.headers['x-frame-options']; - return response; } + if (!response.statusCode) { + response.statusCode = 200; + } + // X-frame-options gets in a way when PHP is + // being displayed in an iframe. + // @TODO: Make it configurable. + delete response.headers['x-frame-options']; + return response; +} - parseHeaders(rawHeaders) { - const parsed = {}; - for (const header of rawHeaders) { - const splitAt = header.indexOf(':'); - const [name, value] = [ - header.substring(0, splitAt).toLowerCase(), - header.substring(splitAt + 2), - ]; - if (!(name in parsed)) { - parsed[name] = []; - } - parsed[name].push(value); +/** + * Parse an array of raw HTTP header lines into + * a key-value object. + * + * @example + * ```js + * parseHeaders(['Content-type: text/html', 'Content-length: 123']) + * // { 'Content-type': ['text/html'], 'Content-length': [123] } + * ``` + * + * @param {string[]} rawHeaders Raw HTTP header lines. + * @returns {Headers} Parsed headers. + */ +function parseHeaders(rawHeaders) { + const parsed = {}; + for (const header of rawHeaders) { + const splitAt = header.indexOf(':'); + const [name, value] = [ + header.substring(0, splitAt).toLowerCase(), + header.substring(splitAt + 2), + ]; + if (!(name in parsed)) { + parsed[name] = []; } - return parsed; + parsed[name].push(value); } - + return parsed; } +/** + * Naively infer a file mime type from its path. + * + * @todo Infer the mime type based on the file contents. + * A naive function like this one can be inaccurate + * and potentially have negative security consequences. + * + * @param {string} path The file path + * @returns {string} The inferred mime type. + */ function inferMimeType(path) { const extension = path.split('.').pop(); switch (extension) { @@ -351,3 +489,35 @@ function inferMimeType(path) { return 'application-octet-stream'; } } + +/** + * @typedef {Object} PHPServerConfigation + * @property {string} documentRoot The directory in the PHP filesystem where the server will look + * for the files to serve. Default: `/var/www`. + * @property {string} absoluteUrl Server URL. Used to populate $_SERVER details like HTTP_HOST. + * @property {(path: string) => boolean} isStaticFilePath Optional. Callback used by the PHPServer to decide whether + * the requested path refers to a PHP file or a static file. + */ + +/** + * @typedef {Object.} Headers + */ +/** + * @typedef {Object} Request + * @property {string} path Request path without the query string. + * @property {string} queryString Optional. Request query string. + * @property {"GET"|"POST"|"HEAD"|"OPTIONS"|"PATCH"|"PUT"|"DELETE"} method Optional. Request method. Default: `GET`. + * @property {Headers} headers Optional. Request headers. + * @property {Object.} files Optional. Request files in the {"filename": File} format. + * @property {Object.} _POST Optional. POST data. + * @property {Object.} _COOKIE Optional. Request cookies. + */ + +/** + * @typedef {Object} Response + * @property {string|ArrayBuffer} body Response body. + * @property {Headers} headers Response headers. + * @property {number} exitCode PHP exit code. Always 0 for static file responses. + * @property {string[]} rawError Lines logged to stderr. Always [''] for static file responses. + */ + diff --git a/packages/php-wasm/src/php.js b/packages/php-wasm/src/php.js index 617e8e4c07..22e0e332a1 100644 --- a/packages/php-wasm/src/php.js +++ b/packages/php-wasm/src/php.js @@ -2,19 +2,122 @@ const STR = "string"; const NUM = "number"; /** - * @typedef {Object} Output - * @property {number} exitCode Exit code of the PHP process. - * @property {string} stdout Stdout data. - * @property {string[]} stderr Stderr lines. + * Initializes the PHP runtime with the given arguments and data dependencies. + * + * This function handles the entire PHP initialization pipeline. In particular, it: + * * Instantiates the Emscripten PHP module + * * Wires it together with the data dependencies and loads them + * * Ensures is all happens in a correct order + * * Waits until the entire loading sequence is finished + * + * Basic usage: + * + * ```js + * const phpLoaderModule = await import("/php.js"); + * const php = await startPHP(phpLoaderModule, "web"); + * console.log(php.run(`'; ` + * 3. Prepend `export const dependenciesTotalSize = ;` + * 4. Append `}` + * + * Be sure to use the `--export-name="emscriptenPHPModule" file_packager.py option. + * + * You want the final output to look as follows: + * + * ```js + * export const dependenciesTotalSize = 5644199; + * export const dependencyFilename = 'dependency.data'; + * export default function(emscriptenPHPModule) { + * // Emscripten-generated code: + * var Module = typeof emscriptenPHPModule !== 'undefined' ? emscriptenPHPModule : {}; + * // ... the rest of it ... + * } + * ``` + * + * Such a constructions enables loading the `dependency.js` as an ES Module using + * `import("/dependency.js")`. + * + * Once it's ready, you can load PHP and your data dependencies as follows: + * + * ```js + * const [phpLoaderModule, wordPressLoaderModule] = await Promise.all([ + * import("/php.js"), + * import("/wp.js") + * ]); + * const php = await startPHP(phpLoaderModule, "web", {}, [wordPressLoaderModule]); + * ``` + * + * @param {Module} phpLoaderModule The ESM-wrapped Emscripten module. Consult the Dockerfile for the build process. + * @param {string} jsEnv The current JavaScript environment. One of: NODE, WEB, or WEBWORKER. + * @param {Object} phpModuleArgs Optional. The Emscripten module arguments, see https://emscripten.org/docs/api_reference/module.html#affecting-execution. + * @param {Module[]} dataDependenciesModules. Optional. A list of the ESM-wrapped Emscripten data dependency modules. + * @returns {PHP} PHP instance. */ - - /** - * - * @param {*} PHPLoader - * @param {*} param1 - * @returns - */ -export async function startPHP(phpLoaderModule, phpEnv, phpModuleArgs = {}, dataDependenciesModules = []) { +export async function startPHP(phpLoaderModule, jsEnv, phpModuleArgs = {}, dataDependenciesModules = []) { let resolvePhpReady, resolveDepsReady; const depsReady = new Promise(resolve => { resolveDepsReady = resolve; }); const phpReady = new Promise(resolve => { resolvePhpReady = resolve; }); @@ -24,7 +127,7 @@ export async function startPHP(phpLoaderModule, phpEnv, phpModuleArgs = {}, data stderr: [], }; const loadPHPRuntime = phpLoaderModule.default; - const PHPRuntime = loadPHPRuntime(phpEnv, { + const PHPRuntime = loadPHPRuntime(jsEnv, { onAbort(reason) { console.error("WASM aborted: "); console.error(reason); @@ -62,15 +165,26 @@ export async function startPHP(phpLoaderModule, phpEnv, phpModuleArgs = {}, data } /** - * Minimal, low level-ish, runtime-agnostic wrapper around the Emscripten's generated module. + * An environment-agnostic wrapper around the Emscripten PHP runtime + * that abstracts the super low-level API and provides a more convenient + * higher-level API. * + * It exposes a minimal set of methods to run PHP scripts and to + * interact with the PHP filesystem. * + * @see {startPHP} This class is not meant to be used directly. Use `startPHP` instead. */ export class PHP { - #streams; #Runtime; + #streams; + /** + * Initializes a PHP runtime. + * + * @param {Module} Runtime PHP Runtime as initialized by startPHP. + * @param {{ stdout: [], stderr: [] }} streams An object pointing to stdout and stderr streams, as initilized by startPHP. + */ constructor(Runtime, streams) { this.#Runtime = Runtime; this.#streams = streams; @@ -84,13 +198,27 @@ html_errors = 1 display_startup_errors = On session.save_path=/home/web_user `); - Runtime.ccall("pib_init", NUM, [STR], []); + Runtime.ccall("phpwasm_init_context", NUM, [STR], []); } /** - * Runs a PHP script. + * Runs a PHP script and outputs an object with three properties: + * stdout, stderr, and the exitCode. + * + * * `exitCode` – the exit code of the script. 0 is success, while 1 and 2 indicate an error. + * * `stdout` – containing the output from `echo`, `print`, inline HTML etc. + * * `stderr` – containing all the errors are logged. It can also be written + * to explicitly: + * + * ```js + * console.log(php.run(`${code}`]); + const exitCode = this.#Runtime.ccall("phpwasm_run", NUM, [STR], [`?>${code}`]); const response = { exitCode, stdout: this.#streams.stdout.join("\n"), @@ -121,7 +249,7 @@ session.save_path=/home/web_user * @private */ #refresh() { - this.#Runtime.ccall("pib_refresh", NUM, [], []); + this.#Runtime.ccall("phpwasm_refresh", NUM, [], []); this.#streams.stdout = []; this.#streams.stderr = []; } @@ -259,7 +387,7 @@ session.save_path=/home/web_user * ``` */ initUploadedFilesHash() { - this.#Runtime.ccall("pib_init_uploaded_files_hash", null, [], []); + this.#Runtime.ccall("phpwasm_init_uploaded_files_hash", null, [], []); } /** @@ -269,7 +397,7 @@ session.save_path=/home/web_user * @param {string} tmpPath The temporary path of the uploaded file. */ registerUploadedFile(tmpPath) { - this.#Runtime.ccall("pib_register_uploaded_file", null, [STR], [tmpPath]); + this.#Runtime.ccall("phpwasm_register_uploaded_file", null, [STR], [tmpPath]); } /** @@ -278,7 +406,14 @@ session.save_path=/home/web_user * @see initUploadedFilesHash() */ destroyUploadedFilesHash() { - this.#Runtime.ccall("pib_destroy_uploaded_files_hash", null, [], []); + this.#Runtime.ccall("phpwasm_destroy_uploaded_files_hash", null, [], []); } } + +/** + * @typedef {Object} Output + * @property {number} exitCode Exit code of the PHP process. 0 means success, 1 and 2 mean error. + * @property {string} stdout Stdout data. + * @property {string[]} stderr Stderr lines. + */ diff --git a/packages/php-wasm/wasm/Dockerfile b/packages/php-wasm/wasm/Dockerfile index 3c9062dbf3..14a5a6f54b 100644 --- a/packages/php-wasm/wasm/Dockerfile +++ b/packages/php-wasm/wasm/Dockerfile @@ -1,17 +1,33 @@ FROM emscripten/emsdk:3.1.24 SHELL ["/bin/bash", "-c"] +# The PHP version to build. +# This value must point to an existing branch of the +# https://github.com/php/php-src.git repository when prefixed +# with "PHP-". +# For example, "7.4.0" is valid because the branch PHP-7.4.0 exists, +# but just "7" is invalid because there's no branch PHP-7. ARG PHP_VERSION=8.0.24 ENV PHP_VERSION ${PHP_VERSION} -ARG WITH_VRZNO="yes" + +# The PHP extensions to build: +ARG WITH_VRZNO=yes ENV WITH_VRZNO ${WITH_VRZNO} ARG WITH_LIBXML=no ENV WITH_LIBXML ${WITH_LIBXML} ARG WITH_LIBZIP=yes ENV WITH_LIBZIP ${WITH_LIBZIP} + +# Whether to include the NODEFS JavaScript library. +# It's useful for loading files and mounting directories +# from the local filesystem. ARG WITH_NODEFS=no ENV WITH_NODEFS ${WITH_NODEFS} + +# The platform to build for: web or node ARG EMSCRIPTEN_ENVIRONMENT=web ENV EMSCRIPTEN_ENVIRONMENT ${EMSCRIPTEN_ENVIRONMENT} + + ENV PKG_CONFIG_PATH /root/lib/lib/pkgconfig ENV TIMER "(which pv > /dev/null && pv --name '${@}' || cat)" @@ -38,7 +54,7 @@ RUN set -euxo pipefail;\ ca-certificates RUN touch /root/.configure-flags && \ - touch /root/.emcc-pib-eval-flags && \ + touch /root/.emcc-php-wasm-flags && \ touch /root/.emcc-php-wasm-sources && \ touch /root/.emcc-php-wasm-flags && \ touch /root/.EXTRA_EXPORTED_RUNTIME_METHODS @@ -56,7 +72,7 @@ RUN if [ "$WITH_LIBXML" = "yes" ]; \ emmake make && \ emmake make install; \ echo -n ' --with-libxml --enable-dom --enable-xml --enable-simplexml' >> /root/.php-configure-flags; \ - echo -n ' -I /root/libxml2' >> /root/.emcc-pib-eval-flags; \ + echo -n ' -I /root/libxml2' >> /root/.emcc-php-wasm-flags; \ echo -n ' /root/lib/lib/libxml2.a' >> /root/.emcc-php-wasm-sources; \ else \ echo -n ' --without-libxml --disable-dom --disable-xml --disable-simplexml' >> /root/.php-configure-flags; \ @@ -88,7 +104,7 @@ RUN if [ "$WITH_LIBZIP" = "yes" ]; then \ RUN if [ "$WITH_LIBZIP" = "yes" ]; then \ echo -n ' --with-zip' >> /root/.php-configure-flags; \ - echo -n ' -I /root/zlib -I /root/libzip' >> /root/.emcc-pib-eval-flags; \ + echo -n ' -I /root/zlib -I /root/libzip' >> /root/.emcc-php-wasm-flags; \ echo -n ' /root/lib/lib/libzip.a /root/lib/lib/libz.a' >> /root/.emcc-php-wasm-sources; \ fi @@ -123,7 +139,7 @@ RUN if [ "$WITH_VRZNO" = "yes" ]; \ --single-branch \ --depth 1; \ echo -n ' --enable-vrzno' >> /root/.php-configure-flags; \ - echo -n ' -DWITH_VRZNO=1' >> /root/.emcc-pib-eval-flags; \ + echo -n ' -DWITH_VRZNO=1' >> /root/.emcc-php-wasm-flags; \ echo -n ', "_exec_callback", "_del_callback"' >> /root/.EXTRA_EXPORTED_FUNCTIONS; \ fi @@ -138,11 +154,11 @@ RUN cd php-src/ && emconfigure ./configure \ --disable-cli \ --disable-all \ --with-sqlite3 \ + --enable-pdo \ + --with-pdo-sqlite \ --enable-session \ --enable-filter \ --enable-calendar \ - --enable-pdo \ - --with-pdo-sqlite \ --disable-rpath \ --disable-phpdbg \ --without-pear \ @@ -160,7 +176,7 @@ RUN cd php-src/ && emmake make -j8 RUN cp -v php-src/.libs/libphp*.la /root/lib/libphp.la RUN cp -v php-src/.libs/libphp*.a /root/lib/libphp.a -COPY ./build-assets/pib_eval.c /root/ +COPY ./build-assets/php_wasm.c /root/ # Build the higher-level PHP bindings RUN cd php-src/ && \ @@ -171,9 +187,9 @@ RUN cd php-src/ && \ -I Zend \ -I main \ -I TSRM/ \ - $(cat /root/.emcc-pib-eval-flags) \ - /root/pib_eval.c \ - -c -o /root/lib/pib_eval.o + $(cat /root/.emcc-php-wasm-flags) \ + /root/php_wasm.c \ + -c -o /root/lib/php_wasm.o # Add nodefs when requested RUN if [ "$EMSCRIPTEN_ENVIRONMENT" = "node" ]; then \ @@ -182,7 +198,7 @@ RUN if [ "$EMSCRIPTEN_ENVIRONMENT" = "node" ]; then \ # Build the final .wasm file RUN mkdir /root/output -RUN export EXPORTED_FUNCTIONS='["_pib_init", "_pib_destroy", "_pib_run", "_pib_refresh", "_main", "_php_embed_init", "_php_embed_shutdown", "_php_embed_shutdown", "_zend_eval_string", "_pib_init_uploaded_files_hash", "_pib_register_uploaded_file", "_pib_destroy_uploaded_files_hash" '"$(cat /root/.EXTRA_EXPORTED_RUNTIME_METHODS)"']'; \ +RUN export EXPORTED_FUNCTIONS='["_phpwasm_init_context", "_phpwasm_destroy_context", "_phpwasm_run", "_phpwasm_refresh", "_phpwasm_init_uploaded_files_hash", "_phpwasm_register_uploaded_file", "_phpwasm_destroy_uploaded_files_hash" '"$(cat /root/.EXTRA_EXPORTED_RUNTIME_METHODS)"']'; \ emcc -O3 \ -o /root/output/php.js \ -s EXPORTED_FUNCTIONS="$EXPORTED_FUNCTIONS" \ @@ -193,7 +209,7 @@ RUN export EXPORTED_FUNCTIONS='["_pib_init", "_pib_destroy", "_pib_run", "_pib_r -s ERROR_ON_UNDEFINED_SYMBOLS=0 \ -s INVOKE_RUN=0 \ /root/lib/libphp.a \ - /root/lib/pib_eval.o \ + /root/lib/php_wasm.o \ $(cat /root/.emcc-php-wasm-sources) \ $(cat /root/.emcc-php-wasm-flags) \ -s ENVIRONMENT=$EMSCRIPTEN_ENVIRONMENT \ diff --git a/packages/php-wasm/wasm/build-assets/php_wasm.c b/packages/php-wasm/wasm/build-assets/php_wasm.c new file mode 100644 index 0000000000..3d13698ef8 --- /dev/null +++ b/packages/php-wasm/wasm/build-assets/php_wasm.c @@ -0,0 +1,207 @@ +/** + * Public API for php.wasm. + * + * This file abstracts the entire PHP API with the minimal set + * of functions required to run PHP code in JavaScript. + */ + +#include "sapi/embed/php_embed.h" +#include +#include + +#include "zend_globals_macros.h" +#include "zend_exceptions.h" +#include "zend_closures.h" +#include "zend_hash.h" +#include "rfc1867.h" +#include "SAPI.h" + +// The final linking step weirdly won't work without these includes: +#include "sqlite3.h" +#include "sqlite3.c" +#include "sqlite_driver.c" +#include "sqlite_statement.c" +#include "pdo_sqlite.c" + +/* + * Function: phpwasm_flush + * ---------------------------- + * Flush any buffered stdout and stderr contents. + */ +void phpwasm_flush() +{ + fflush(stdout); + fprintf(stdout, "\n"); + + fflush(stderr); + fprintf(stderr, "\n"); +} + +/* + * Function: phpwasm_run + * ---------------------------- + * Runs a PHP script. Writes the output to stdout and stderr, + * + * code: The PHP code to run. Must include the ` -#include - -#include "zend_globals_macros.h" -#include "zend_exceptions.h" -#include "zend_closures.h" -#include "zend_hash.h" -#include "rfc1867.h" -#include "SAPI.h" - -// The final linking step weirdly won't work without these includes: -#include "sqlite3.h" -#include "sqlite3.c" -#include "sqlite_driver.c" -#include "sqlite_statement.c" -#include "pdo_sqlite.c" - -int main() { return 0; } - -int EMSCRIPTEN_KEEPALIVE pib_init() -{ - putenv("USE_ZEND_ALLOC=0"); - - return php_embed_init(0, NULL); -} - -void pib_finally() -{ - fflush(stdout); - fprintf(stdout, "\n"); - - fflush(stderr); - fprintf(stderr, "\n"); -} - -int EMSCRIPTEN_KEEPALIVE pib_run(char *code) -{ - int retVal = 255; // Unknown error. - - zend_try - { - retVal = zend_eval_string(code, NULL, "php-wasm run script"); - - if(EG(exception)) - { - zend_exception_error(EG(exception), E_ERROR); - retVal = 2; - } - } - zend_catch - { - retVal = 1; // Code died. - } - - zend_end_try(); - - pib_finally(); - - return retVal; -} - -void EMSCRIPTEN_KEEPALIVE pib_destroy() -{ - return php_embed_shutdown(); -} - -int EMSCRIPTEN_KEEPALIVE pib_refresh() -{ - pib_destroy(); - - return pib_init(); -} - -// -static void free_filename(zval *el) { - // Uncommenting this code causes a runtime error in the browser: - // @TODO evaluate whether keeping it commented leads to a memory leak - // and how to fix it if it does. - // zend_string *filename = Z_STR_P(el); - // zend_string_release_ex(filename, 0); -} - -void EMSCRIPTEN_KEEPALIVE pib_init_uploaded_files_hash() -{ - zend_hash_init(&PG(rfc1867_protected_variables), 8, NULL, NULL, 0); - - HashTable *uploaded_files = NULL; - ALLOC_HASHTABLE(uploaded_files); - zend_hash_init(uploaded_files, 8, NULL, free_filename, 0); - SG(rfc1867_uploaded_files) = uploaded_files; -} - -void EMSCRIPTEN_KEEPALIVE pib_register_uploaded_file(char *tmp_path_char) -{ - zend_string *tmp_path = zend_string_init(tmp_path_char, strlen(tmp_path_char), 1); - zend_hash_add_ptr(SG(rfc1867_uploaded_files), tmp_path, tmp_path); -} - -void EMSCRIPTEN_KEEPALIVE pib_destroy_uploaded_files_hash() -{ - destroy_uploaded_files_hash(); -} -// - -#ifdef WITH_VRZNO -#include "../php-src/ext/vrzno/php_vrzno.h" - -int EMSCRIPTEN_KEEPALIVE exec_callback(zend_function *fptr) -{ - int retVal = vrzno_exec_callback(fptr); - - fflush(stdout); - - return retVal; -} - -int EMSCRIPTEN_KEEPALIVE del_callback(zend_function *fptr) -{ - return vrzno_del_callback(fptr); -} -#endif diff --git a/packages/wordpress-wasm/README.md b/packages/wordpress-wasm/README.md new file mode 100644 index 0000000000..8f5d5bc350 --- /dev/null +++ b/packages/wordpress-wasm/README.md @@ -0,0 +1,22 @@ +# Run PHP in the browser + +Uses [php-wasm](../php-wasm/) and [php-wasm-browser](../php-wasm-browser/) to run WordPress fully in the browser without any PHP server. + +The documentation for both is quite comprehensive, but this README file is still a work in progress. Fortunately, this package is rather thin and mostly uses the APIs provided by the other two. Please read the other two documents and then refer directly to the code in the [php-wasm](./src/) directory to learn more. + +## Customizing the WordPress installation + +You can customize the WordPress installation by adjusting the [Dockerfile](./wordpress/Dockerfile) that generates the `wp.data` Data Dependency bundle. + +Once you're finished, rebuild WordPress by running: + +```bash +npm run build:wp +``` + +## Other notes + +* WordPress is configured to use SQLite instead of MySQL. This is possible thanks to https://github.com/aaemnnosttv/wp-sqlite-db. +* The static files (.js, .css, etc.) are served directly from the server filesystem, not from the WebAssembly bundle. +* PHP cannot communicate with the WordPress.org API yet, so the plugin directory etc does not work. +* The sqlite database lives in the memory and the changes only live as long as the loaded page. diff --git a/packages/wordpress-wasm/src/example-app.js b/packages/wordpress-wasm/src/example-app.js index dd231877ff..d4a1e4938d 100644 --- a/packages/wordpress-wasm/src/example-app.js +++ b/packages/wordpress-wasm/src/example-app.js @@ -1,6 +1,6 @@ import { bootWordPress } from './index' import { login, installPlugin } from './macros' -import { cloneResponseMonitorProgress, postMessageHandler } from 'php-wasm-browser' +import { cloneResponseMonitorProgress } from 'php-wasm-browser' function setupAddressBar(wasmWorker) { // Manage the address bar @@ -125,15 +125,24 @@ async function main() { if (query.get('rpc')) { console.log("Registering an RPC handler"); - window.addEventListener("message", postMessageHandler(async (data) => { - if (data.type === 'rpc') { - return await workerThread[data.method](...data.args); - } else if (data.type === 'go_to') { - wpFrame.src = workerThread.pathToInternalUrl(data.path); - } else if (data.type === 'is_alive') { + async function handleMessage(event) { + if (event.data.type === 'rpc') { + return await workerThread[event.data.method](...event.data.args); + } else if (event.data.type === 'go_to') { + wpFrame.src = workerThread.pathToInternalUrl(event.data.path); + } else if (event.data.type === 'is_alive') { return true; } - })); + } + window.addEventListener("message", async event => { + const result = await handleMessage(event.data); + + // When `requestId` is present, the other thread expects a response: + if (event.data.requestId) { + const response = responseTo(event.data.requestId, result); + window.parent.postMessage(response, '*'); + } + }); } const initialUrl = query.get('url') || '/'; diff --git a/packages/wordpress-wasm/src/index.js b/packages/wordpress-wasm/src/index.js index a4b6b1852b..ce6b0d9aae 100644 --- a/packages/wordpress-wasm/src/index.js +++ b/packages/wordpress-wasm/src/index.js @@ -1,46 +1,15 @@ -import { - postMessageExpectReply, - awaitReply, - responseTo, - registerServiceWorker, - startPHPWorkerThread, - getWorkerThreadBackend -} from 'php-wasm-browser'; +import { registerServiceWorker, spawnPHPWorkerThread } from 'php-wasm-browser'; +import { wasmWorkerUrl, wasmWorkerBackend, serviceWorkerUrl } from "./config"; -import { - wasmWorkerUrl, - wasmWorkerBackend, - wordPressSiteUrl, - serviceWorkerUrl, -} from "./config"; - -const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms)); -const noop = () => {}; - -export async function bootWordPress({ - assignScope = true, - onWasmDownloadProgress, -}) { +export async function bootWordPress({ onWasmDownloadProgress }) { assertNotInfiniteLoadingLoop(); - const scope = assignScope ? Math.random().toFixed(16) : undefined; - - const workerThread = await startPHPWorkerThread({ - backend: getWorkerThreadBackend(wasmWorkerBackend, wasmWorkerUrl), - absoluteUrl: wordPressSiteUrl, - scope, - onDownloadProgress: onWasmDownloadProgress, - }); - await registerServiceWorker({ - url: serviceWorkerUrl, - broadcastChannel: new BroadcastChannel('wordpress-wasm'), - // Forward any HTTP requests to a worker to resolve them in another process. - // This way they won't slow down the UI interactions. - onRequest: async (request) => { - return await workerThread.HTTPRequest(request); - }, - scope, - }); + const workerThread = await spawnPHPWorkerThread( + wasmWorkerBackend, + wasmWorkerUrl, + { onDownloadProgress: onWasmDownloadProgress } + ); + await registerServiceWorker(serviceWorkerUrl); return workerThread; } diff --git a/packages/wordpress-wasm/src/service-worker.js b/packages/wordpress-wasm/src/service-worker.js index 5195fce6b6..02c608968a 100644 --- a/packages/wordpress-wasm/src/service-worker.js +++ b/packages/wordpress-wasm/src/service-worker.js @@ -3,7 +3,6 @@ import { initializeServiceWorker, seemsLikeAPHPServerPath } from 'php-wasm-brows import { isUploadedFilePath } from './'; initializeServiceWorker({ - broadcastChannel: new BroadcastChannel('wordpress-wasm'), shouldForwardRequestToPHPServer }); diff --git a/packages/wordpress-wasm/src/worker-thread.js b/packages/wordpress-wasm/src/worker-thread.js index cfe4fa2437..5a882d64e7 100644 --- a/packages/wordpress-wasm/src/worker-thread.js +++ b/packages/wordpress-wasm/src/worker-thread.js @@ -1,15 +1,20 @@ import { PHP, PHPServer, PHPBrowser } from 'php-wasm'; import { loadPHPWithProgress, initializeWorkerThread } from 'php-wasm-browser'; -import { phpJsCacheBuster, wpJsCacheBuster } from './config'; +import { phpJsCacheBuster, wpJsCacheBuster, wordPressSiteUrl } from './config'; import { isUploadedFilePath } from './'; +import { setURLScope } from 'php-wasm-browser'; -initializeWorkerThread(startWordPress); - +const scope = Math.random().toFixed(16); +const scopedSiteUrl = setURLScope(wordPressSiteUrl, scope).toString(); // Hardcoded in wp.js: -const DOCROOT = '/wordpress'; +const DOCROOT = '/wordpress' + +startWordPress().then(browser => initializeWorkerThread({ + phpBrowser: browser +})); -async function startWordPress({ absoluteUrl }) { +async function startWordPress() { const [phpLoaderModule, wpLoaderModule] = await Promise.all([ import(`/php.js?${phpJsCacheBuster}`), import(`/wp.js?${wpJsCacheBuster}`) @@ -17,18 +22,18 @@ async function startWordPress({ absoluteUrl }) { const php = await loadPHPWithProgress(phpLoaderModule, [wpLoaderModule]); - patchWordPressFiles(php, absoluteUrl); + patchWordPressFiles(php); const server = new PHPServer(php, { documentRoot: DOCROOT, - absoluteUrl: absoluteUrl, + absoluteUrl: scopedSiteUrl, isStaticFilePath: isUploadedFilePath }); return new PHPBrowser(server); } -function patchWordPressFiles(php, absoluteUrl) { +function patchWordPressFiles(php) { function patchFile(path, callback) { php.writeFile(path, callback(php.readFileAsText(path)) @@ -45,12 +50,12 @@ function patchWordPressFiles(php, absoluteUrl) { ` ); - // Force the site URL to be $absoluteUrl: + // Force the site URL to be $scopedSiteUrl: // Interestingly, it doesn't work when put in a mu-plugin. patchFile(`${DOCROOT}/wp-includes/plugin.php`, (contents) => contents + ` function _wasm_wp_force_site_url() { - return ${JSON.stringify(absoluteUrl)}; + return ${JSON.stringify(scopedSiteUrl)}; } add_filter( "option_home", '_wasm_wp_force_site_url', 10000 ); add_filter( "option_siteurl", '_wasm_wp_force_site_url', 10000 );