Keep DSN params sorted

Author: julienschmidt

README.md

@@ -135,23 +135,23 @@ Default:        false
 
 `allowCleartextPasswords=true` allows using the [cleartext client side plugin](http://dev.mysql.com/doc/en/cleartext-authentication-plugin.html) if required by an account, such as one defined with the [PAM authentication plugin](http://dev.mysql.com/doc/en/pam-authentication-plugin.html). Sending passwords in clear text may be a security problem in some configurations. To avoid problems if there is any possibility that the password would be intercepted, clients should connect to MySQL Server using a method that protects the password. Possibilities include [TLS / SSL](#tls), IPsec, or a private network.
 
-##### `allowOldPasswords`
+##### `allowNativePasswords`
 
 ```
 Type:           bool
 Valid Values:   true, false
 Default:        false
 ```
-`allowOldPasswords=true` allows the usage of the insecure old password method. This should be avoided, but is necessary in some cases. See also [the old_passwords wiki page](https://github.com/go-sql-driver/mysql/wiki/old_passwords).
+`allowNativePasswords=true` allows the usage of the mysql native password method.
 
-##### `allowNativePasswords`
+##### `allowOldPasswords`
 
 ```
 Type:           bool
 Valid Values:   true, false
 Default:        false
 ```
-`allowNativePasswords=true` allows the usage of the mysql native password method.
+`allowOldPasswords=true` allows the usage of the insecure old password method. This should be avoided, but is necessary in some cases. See also [the old_passwords wiki page](https://github.com/go-sql-driver/mysql/wiki/old_passwords).
 
 ##### `charset`
 

dsn.go

@@ -46,8 +46,8 @@ type Config struct {
 
 	AllowAllFiles           bool // Allow all files to be used with LOAD DATA LOCAL INFILE
 	AllowCleartextPasswords bool // Allows the cleartext client side plugin
-	AllowOldPasswords       bool // Allows the old insecure password method
 	AllowNativePasswords    bool // Allows the native password authentication method
+	AllowOldPasswords       bool // Allows the old insecure password method
 	ClientFoundRows         bool // Return number of matching rows instead of rows changed
 	ColumnsWithAlias        bool // Prepend table alias to column names
 	InterpolateParams       bool // Interpolate placeholders into query string
@@ -382,18 +382,18 @@ func parseDSNParams(cfg *Config, params string) (err error) {
 				return errors.New("invalid bool value: " + value)
 			}
 
-		// Use old authentication mode (pre MySQL 4.1)
-		case "allowOldPasswords":
+		// Use native password authentication
+		case "allowNativePasswords":
 			var isBool bool
-			cfg.AllowOldPasswords, isBool = readBool(value)
+			cfg.AllowNativePasswords, isBool = readBool(value)
 			if !isBool {
 				return errors.New("invalid bool value: " + value)
 			}
 
-			// Use native password authentication
-		case "allowNativePasswords":
+		// Use old authentication mode (pre MySQL 4.1)
+		case "allowOldPasswords":
 			var isBool bool
-			cfg.AllowNativePasswords, isBool = readBool(value)
+			cfg.AllowOldPasswords, isBool = readBool(value)
 			if !isBool {
 				return errors.New("invalid bool value: " + value)
 			}

errors.go

@@ -22,9 +22,9 @@ var (
 	ErrInvalidConn       = errors.New("invalid connection")
 	ErrMalformPkt        = errors.New("malformed packet")
 	ErrNoTLS             = errors.New("TLS requested but server does not support TLS")
-	ErrOldPassword       = errors.New("this user requires old password authentication. If you still want to use it, please add 'allowOldPasswords=1' to your DSN. See also https://github.com/go-sql-driver/mysql/wiki/old_passwords")
 	ErrCleartextPassword = errors.New("this user requires clear text authentication. If you still want to use it, please add 'allowCleartextPasswords=1' to your DSN")
 	ErrNativePassword    = errors.New("this user requires mysql native password authentication.")
+	ErrOldPassword       = errors.New("this user requires old password authentication. If you still want to use it, please add 'allowOldPasswords=1' to your DSN. See also https://github.com/go-sql-driver/mysql/wiki/old_passwords")
 	ErrUnknownPlugin     = errors.New("this authentication plugin is not supported")
 	ErrOldProtocol       = errors.New("MySQL server does not support required protocol 41+")
 	ErrPktSync           = errors.New("commands out of sync. You can't run this command now")