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Vectorize ValidateHeaderCharacters
1 parent 57b3685 commit 3297a9a

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4 files changed

+95
-11
lines changed

4 files changed

+95
-11
lines changed

‎src/Microsoft.AspNetCore.Server.Kestrel/Internal/Http/FrameHeaders.Generated.cs

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -7683,7 +7683,7 @@ protected override bool TryGetValueFast(string key, out StringValues value)
76837683
}
76847684
protected override void SetValueFast(string key, StringValues value)
76857685
{
7686-
ValidateHeaderCharacters(value);
7686+
ValidateHeaderCharacters(ref value);
76877687
switch (key.Length)
76887688
{
76897689
case 13:
@@ -8025,7 +8025,7 @@ protected override void SetValueFast(string key, StringValues value)
80258025
}
80268026
protected override void AddValueFast(string key, StringValues value)
80278027
{
8028-
ValidateHeaderCharacters(value);
8028+
ValidateHeaderCharacters(ref value);
80298029
switch (key.Length)
80308030
{
80318031
case 13:

‎src/Microsoft.AspNetCore.Server.Kestrel/Internal/Http/FrameHeaders.cs

Lines changed: 82 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -5,6 +5,8 @@
55
using System.Collections;
66
using System.Collections.Generic;
77
using System.Linq;
8+
using System.Numerics;
9+
using System.Runtime.CompilerServices;
810
using Microsoft.AspNetCore.Http;
911
using Microsoft.Extensions.Primitives;
1012
using Microsoft.Net.Http.Headers;
@@ -211,25 +213,80 @@ bool IDictionary<string, StringValues>.TryGetValue(string key, out StringValues
211213
return TryGetValueFast(key, out value);
212214
}
213215

214-
public static void ValidateHeaderCharacters(StringValues headerValues)
216+
[MethodImpl(MethodImplOptions.AggressiveInlining)]
217+
public static void ValidateHeaderCharacters(ref StringValues headerValues)
215218
{
216219
var count = headerValues.Count;
217220
for (var i = 0; i < count; i++)
218-
219221
{
220222
ValidateHeaderCharacters(headerValues[i]);
221223
}
222224
}
223225

224-
public static void ValidateHeaderCharacters(string headerCharacters)
226+
public static unsafe void ValidateHeaderCharacters(string headerCharacters)
225227
{
226228
if (headerCharacters != null)
227229
{
228-
foreach (var ch in headerCharacters)
230+
fixed (char* header = headerCharacters)
229231
{
230-
if (ch < 0x20 || ch > 0x7E)
232+
// offsets and lengths are handled in byte* sizes
233+
var pHeader = (byte*)header;
234+
var offset = 0;
235+
var length = headerCharacters.Length * 2;
236+
237+
if (Vector.IsHardwareAccelerated && Vector<byte>.Count <= length)
238+
{
239+
var vSub = Vector.AsVectorUInt16(new Vector<uint>(0x00200020u));
240+
// 0x7e as highest ascii (don't include DEL)
241+
// 0x20 as lowerest ascii (space)
242+
var vTest = Vector.AsVectorUInt16(new Vector<uint>(0x007e007eu - 0x00200020u));
243+
244+
do
245+
{
246+
var stringVector = Unsafe.Read<Vector<ushort>>(pHeader + offset);
247+
offset += Vector<byte>.Count;
248+
if (Vector.GreaterThanAny(stringVector - vSub, vTest))
249+
{
250+
ThrowInvalidHeaderCharacter(pHeader + offset, Vector<byte>.Count);
251+
}
252+
} while (offset + Vector<byte>.Count <= length);
253+
}
254+
255+
// Non-vector testing:
256+
// Flag > 0x007f => Use value directly, already flagged
257+
// Flag 0x7f => Add 0x0001 to each char so DEL (0x7f) will set a high bit
258+
// Flag < 0x20 => Sub 0x0020 from each char so high bit will be set in previous char bit
259+
// Bitwise | or the above three together
260+
// Bitwise & and each char with 0xff80; result should be 0 if all tests pass
261+
if (offset + sizeof(ulong) <= length)
262+
{
263+
do
264+
{
265+
var stringUlong = (ulong*)(pHeader + offset);
266+
offset += sizeof(ulong);
267+
if (((*stringUlong | (*stringUlong + 0x0001000100010001UL) | (*stringUlong - 0x0020002000200020UL)) & 0xff80ff80ff80ff80UL) != 0)
268+
{
269+
ThrowInvalidHeaderCharacter(pHeader + offset, sizeof(ulong));
270+
}
271+
} while (offset + sizeof(ulong) <= length);
272+
}
273+
if (offset + sizeof(uint) <= length)
231274
{
232-
ThrowInvalidHeaderCharacter(ch);
275+
var stringUint = (uint*)(pHeader + offset);
276+
offset += sizeof(uint);
277+
if (((*stringUint | (*stringUint + 0x00010001u) | (*stringUint - 0x00200020u)) & 0xff80ff80u) != 0)
278+
{
279+
ThrowInvalidHeaderCharacter(pHeader + offset, sizeof(uint));
280+
}
281+
}
282+
if (offset + sizeof(ushort) <= length)
283+
{
284+
var stringUshort = (ushort*)(pHeader + offset);
285+
offset += sizeof(ushort);
286+
if (((*stringUshort | (*stringUshort + 0x0001u) | (*stringUshort - 0x0020u)) & 0xff80u) != 0)
287+
{
288+
ThrowInvalidHeaderCharacter(pHeader + offset, sizeof(ushort));
289+
}
233290
}
234291
}
235292
}
@@ -417,9 +474,26 @@ private static void ThrowInvalidContentLengthException(string value)
417474
throw new InvalidOperationException($"Invalid Content-Length: \"{value}\". Value must be a positive integral number.");
418475
}
419476

420-
private static void ThrowInvalidHeaderCharacter(char ch)
477+
private unsafe static Exception GetInvalidHeaderCharacterException(byte* end, int byteCount)
478+
{
479+
var start = end - byteCount;
480+
while (start < end)
481+
{
482+
var ch = *(char*)start;
483+
if (ch < 0x20 || ch >= 0x7f)
484+
{
485+
return new InvalidOperationException(string.Format("Invalid non-ASCII or control character in header: 0x{0:X4}", (ushort)ch));
486+
}
487+
start += sizeof(char);
488+
}
489+
490+
// Should never be reached, use different exception type so unit tests can pick it up
491+
return new ArgumentException("Invalid non-ASCII or control character in header");
492+
}
493+
494+
private unsafe static void ThrowInvalidHeaderCharacter(byte* end, int byteCount)
421495
{
422-
throw new InvalidOperationException(string.Format("Invalid non-ASCII or control character in header: 0x{0:X4}", (ushort)ch));
496+
throw GetInvalidHeaderCharacterException(end, byteCount);
423497
}
424498
}
425499
}

‎test/Microsoft.AspNetCore.Server.KestrelTests/FrameResponseHeadersTests.cs

Lines changed: 10 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -77,6 +77,16 @@ public void InitialDictionaryIsEmpty()
7777
[InlineData("Server", "Dašta")]
7878
[InlineData("Unknownš-Header", "Data")]
7979
[InlineData("Seršver", "Data")]
80+
[InlineData("Cookie", "ZGVmYXVsdC1zcmM\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")]
81+
[InlineData("Cookie", "ZGVmYXVsdC1zcmMg\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")]
82+
[InlineData("Cookie", "ZGVmYXVsdC1zcmMgJ\025vbmUnOyBiYXNlLXVyaSAnc2VsZic7IGJsb2NrLWFsbC1taXhlZC1jb250ZW50OyBjaGlsZC1zcmMgcmVuZGVyLmdpdGh1YnVzZXJjb250ZW50LmNvbTsgY29ubmVjdC1zcmMgJ3NlbGYnIHVwbG9hZHMuZ2l0aHViLmNvbSBzdGF0dXMuZ2l0aHViLmNvbSBhcGkuZ2l0aHViLmNvbSB3d3cuZ29vZ2xlLWFuYWx5dGljcy5jb20gZ2l0aHViLWNsb3VkLnMzLmFtYXpvbmF3cy5jb20gYXBpLmJyYWludHJlZWdhdGV3YXkuY29tIGNsaWVudC1hbmFseXRpY3MuYnJhaW50cmVlZ2F0ZXdheS5jb20gd3NzOi8vbGl2ZS5naXRodWIuY29tOyBmb250LXNyYyBhc3NldHMtY2RuLmdpdGh1Yi5jb207IGZvcm0tYWN0aW9uICdzZWxmJyBnaXRodWIuY29tIGdpc3QuZ2l0aHViLmNvbTsgZnJhbWUtYW5jZXN0b3JzICdub25lJzsgZnJhbWUtc3JjIHJlbmRlci5naXRodWJ1c2VyY29udGVudC5jb207IGltZy1zcmMgJ3NlbGYnIGRhdGE6IGFzc2V0cy1jZG4uZ2l0aHViLmNvbSBpZGVudGljb25zLmdpdGh1Yi5jb20gd3d3Lmdvb2dsZS1hbmFseXRpY3MuY29tIGNvbGxlY3Rvci5naXRodWJhcHAuY29tICouZ3JhdmF0YXIuY29tICoud3AuY29tIGNoZWNrb3V0LnBheXBhbC5jb20gKi5naXRodWJ1c2VyY29udGVudC5jb207IG1lZGlhLXNyYyAnbm9uZSc7IG9iamVjdC1zcmMgYXNzZXRzLWNkbi5naXRodWIuY29tOyBwbHVnaW4tdHlwZXMgYXBwbGljYXRpb24veC1zaG9ja3dhdmUtZmxhc2g7IHNjcmlwdC1zcmMgYXNzZXRzLWNkbi5naXRodWIuY29tOyBzdHlsZS1zcmMgJ3Vuc2FmZS1pbmxpbmUnIGFzc2V0cy1jZG4uZ2l0aHViLmNvbTsgcmVwb3J0LXVyaSBodHRwczovL2FwaS5naXRodWIuY29tL19wcml2YXRlL2Jyb3dzZXIvZXJyb3Jz")]
83+
[InlineData("Cookie", "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\0")]
84+
[InlineData("Content-Security-Polic\0y", "default-src 'none'; base-uri 'self'; block-all-mixed-content; child-src render.githubusercontent.com; connect-src 'self' uploads.github.com status.github.com api.github.com www.google-analytics.com github-cloud.s3.amazonaws.com api.braintreegateway.com client-analytics.braintreegateway.com wss://live.github.com; font-src assets-cdn.github.com; form-action 'self' github.com gist.github.com; frame-ancestors 'none'; frame-src render.githubusercontent.com; img-src 'self' data: assets-cdn.github.com identicons.github.com www.google-analytics.com collector.githubapp.com *.gravatar.com *.wp.com checkout.paypal.com *.githubusercontent.com; media-src 'none'; object-src assets-cdn.github.com; plugin-types application/x-shockwave-flash; script-src assets-cdn.github.com; style-src 'unsafe-inline' assets-cdn.github.com; report-uri https://api.github.com/_private/browser/errors")]
85+
[InlineData("Content-Securit\0y-Policy", "default-src 'none'; base-uri 'self'; block-all-mixed-content; child-src render.githubusercontent.com; connect-src 'self' uploads.github.com status.github.com api.github.com www.google-analytics.com github-cloud.s3.amazonaws.com api.braintreegateway.com client-analytics.braintreegateway.com wss://live.github.com; font-src assets-cdn.github.com; form-action 'self' github.com gist.github.com; frame-ancestors 'none'; frame-src render.githubusercontent.com; img-src 'self' data: assets-cdn.github.com identicons.github.com www.google-analytics.com collector.githubapp.com *.gravatar.com *.wp.com checkout.paypal.com *.githubusercontent.com; media-src 'none'; object-src assets-cdn.github.com; plugin-types application/x-shockwave-flash; script-src assets-cdn.github.com; style-src 'unsafe-inline' assets-cdn.github.com; report-uri https://api.github.com/_private/browser/errors")]
86+
[InlineData("Content-Security-Policy", "default-src 'none'; base-uri 'self'; \0block-all-mixed-content; child-src render.githubusercontent.com; connect-src 'self' uploads.github.com status.github.com api.github.com www.google-analytics.com github-cloud.s3.amazonaws.com api.braintreegateway.com client-analytics.braintreegateway.com wss://live.github.com; font-src assets-cdn.github.com; form-action 'self' github.com gist.github.com; frame-ancestors 'none'; frame-src render.githubusercontent.com; img-src 'self' data: assets-cdn.github.com identicons.github.com www.google-analytics.com collector.githubapp.com *.gravatar.com *.wp.com checkout.paypal.com *.githubusercontent.com; media-src 'none'; object-src assets-cdn.github.com; plugin-types application/x-shockwave-flash; script-src assets-cdn.github.com; style-src 'unsafe-inline' assets-cdn.github.com; report-uri https://api.github.com/_private/browser/errors")]
87+
[InlineData("Content-Security-Policy", "default-src 'none'; base-uri 'self'; šblock-all-mixed-content; child-src render.githubusercontent.com; connect-src 'self' uploads.github.com status.github.com api.github.com www.google-analytics.com github-cloud.s3.amazonaws.com api.braintreegateway.com client-analytics.braintreegateway.com wss://live.github.com; font-src assets-cdn.github.com; form-action 'self' github.com gist.github.com; frame-ancestors 'none'; frame-src render.githubusercontent.com; img-src 'self' data: assets-cdn.github.com identicons.github.com www.google-analytics.com collector.githubapp.com *.gravatar.com *.wp.com checkout.paypal.com *.githubusercontent.com; media-src 'none'; object-src assets-cdn.github.com; plugin-types application/x-shockwave-flash; script-src assets-cdn.github.com; style-src 'unsafe-inline' assets-cdn.github.com; report-uri https://api.github.com/_private/browser/errors")]
88+
[InlineData("Content-Security-Policy", "default-src 'none'; base-uri 'self'; \u0080block-all-mixed-content; child-src render.githubusercontent.com; connect-src 'self' uploads.github.com status.github.com api.github.com www.google-analytics.com github-cloud.s3.amazonaws.com api.braintreegateway.com client-analytics.braintreegateway.com wss://live.github.com; font-src assets-cdn.github.com; form-action 'self' github.com gist.github.com; frame-ancestors 'none'; frame-src render.githubusercontent.com; img-src 'self' data: assets-cdn.github.com identicons.github.com www.google-analytics.com collector.githubapp.com *.gravatar.com *.wp.com checkout.paypal.com *.githubusercontent.com; media-src 'none'; object-src assets-cdn.github.com; plugin-types application/x-shockwave-flash; script-src assets-cdn.github.com; style-src 'unsafe-inline' assets-cdn.github.com; report-uri https://api.github.com/_private/browser/errors")]
89+
[InlineData("Content-Security-Policy", "default-src 'none'; base-uri 'self'; block-all-mixed-content; child-src render.githubusercontent.com; connect-src 'self' uploads.github.com status.github.com api.github.com www.google-analytics.com github-cloud.s3.amazonaws.com api.braintreegateway.com client-analytics.braintreegateway.com wss://live.github.com; font-src assets-cdn.github.com; form-action 'self' github.com gist.github.com; frame-ancestors 'none'; frame-src render.githubusercontent.com; img-src 'self' data: assets-cdn.github.com identicons.github.com www.google-analytics.com collector.githubapp.com *.gravatar.com *.wp.com checkout.paypal.com *.githubusercontent.com; media-src 'none'; object-src assets-cdn.github.com; plugin-types application/x-shockwave-flash; script-src assets-cdn.github.com; style-src 'unsafe-inline' assets-cdn.github.com; report-uri https://api.github.com/_private/browser/errorsš")]
8090
public void AddingControlOrNonAsciiCharactersToHeadersThrows(string key, string value)
8191
{
8292
var responseHeaders = new FrameResponseHeaders();

‎tools/Microsoft.AspNetCore.Server.Kestrel.GeneratedCode/KnownHeaders.cs

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -368,7 +368,7 @@ protected override bool TryGetValueFast(string key, out StringValues value)
368368
}}
369369
protected override void SetValueFast(string key, StringValues value)
370370
{{
371-
{(loop.ClassName == "FrameResponseHeaders" ? "ValidateHeaderCharacters(value);" : "")}
371+
{(loop.ClassName == "FrameResponseHeaders" ? "ValidateHeaderCharacters(ref value);" : "")}
372372
switch (key.Length)
373373
{{{Each(loop.HeadersByLength, byLength => $@"
374374
case {byLength.Key}:

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