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Update comments in RequestUriBuilder

This commit is contained in:
Troy Dai 2016-09-06 11:01:39 -07:00
parent 93feda2b8a
commit 7592086060
1 changed files with 28 additions and 28 deletions
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56
src/Microsoft.Net.Http.Server/RequestProcessing/RequestUriBuilder.cs
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@ -57,7 +57,7 @@ namespace Microsoft.Net.Http.Server
}
/// <summary>
/// Unescape a given path string which may contain escaped char.
/// Unescape a given path string in place. The given path string may contain escaped char.
/// </summary>
/// <param name="rawPath">The raw path string to be unescaped</param>
/// <returns>The unescaped path string</returns>
@ -121,16 +121,16 @@ namespace Microsoft.Net.Http.Server
// bytes from this till the last scanned one will be copied to the memory pointed by writer.
var byte1 = UnescapePercentEncoding(ref reader, end, buffer);
if (!byte1.HasValue)
{
return false;
}
if (byte1 == 0)
{
throw new InvalidOperationException("The path contains null characters.");
}
if (byte1 == -1)
{
return false;
}
if (byte1 <= 0x7F)
{
// first byte < U+007f, it is a single byte ASCII
@ -147,21 +147,21 @@ namespace Microsoft.Net.Http.Server
if ((byte1 & 0xE0) == 0xC0)
{
// 110x xxxx, expect one more byte
currentDecodeBits = byte1 & 0x1F;
currentDecodeBits = byte1.Value & 0x1F;
byteCount = 2;
expectValueMin = 0x80;
}
else if ((byte1 & 0xF0) == 0xE0)
{
// 1110 xxxx, expect two more bytes
currentDecodeBits = byte1 & 0x0F;
currentDecodeBits = byte1.Value & 0x0F;
byteCount = 3;
expectValueMin = 0x800;
}
else if ((byte1 & 0xF8) == 0xF0)
{
// 1111 0xxx, expect three more bytes
currentDecodeBits = byte1 & 0x07;
currentDecodeBits = byte1.Value & 0x07;
byteCount = 4;
expectValueMin = 0x10000;
}
@ -182,7 +182,7 @@ namespace Microsoft.Net.Http.Server
var nextItr = reader;
var nextByte = UnescapePercentEncoding(ref nextItr, end, buffer);
if (nextByte == -1)
if (!nextByte.HasValue)
{
return false;
}
@ -193,7 +193,7 @@ namespace Microsoft.Net.Http.Server
return false;
}
currentDecodeBits = (currentDecodeBits << 6) | (nextByte & 0x3F);
currentDecodeBits = (currentDecodeBits << 6) | (nextByte.Value & 0x3F);
remainingBytes--;
if (remainingBytes == 1 && currentDecodeBits >= 0x360 && currentDecodeBits <= 0x37F)
@ -212,15 +212,15 @@ namespace Microsoft.Net.Http.Server
reader = nextItr;
if (byteCount - remainingBytes == 2)
{
byte2 = nextByte;
byte2 = nextByte.Value;
}
else if (byteCount - remainingBytes == 3)
{
byte3 = nextByte;
byte3 = nextByte.Value;
}
else if (byteCount - remainingBytes == 4)
{
byte4 = nextByte;
byte4 = nextByte.Value;
}
}
@ -278,7 +278,7 @@ namespace Microsoft.Net.Http.Server
/// <param name="scan">The value to read</param>
/// <param name="buffer">The byte array</param>
/// <returns>The unescaped byte if success. Otherwise return -1.</returns>
private static int UnescapePercentEncoding(ref int scan, int end, byte[] buffer)
private static int? UnescapePercentEncoding(ref int scan, int end, byte[] buffer)
{
if (buffer[scan++] != '%')
{
@ -287,25 +287,25 @@ namespace Microsoft.Net.Http.Server
var probe = scan;
int value1 = ReadHex(ref probe, end, buffer);
if (value1 == -1)
var value1 = ReadHex(ref probe, end, buffer);
if (!value1.HasValue)
{
return -1;
return null;
}
int value2 = ReadHex(ref probe, end, buffer);
if (value2 == -1)
var value2 = ReadHex(ref probe, end, buffer);
if (!value2.HasValue)
{
return -1;
return null;
}
if (SkipUnescape(value1, value2))
if (SkipUnescape(value1.Value, value2.Value))
{
return -1;
return null;
}
scan = probe;
return (value1 << 4) + value2;
return (value1.Value << 4) + value2.Value;
}
/// <summary>
@ -317,11 +317,11 @@ namespace Microsoft.Net.Http.Server
/// <param name="scan">The value to read</param>
/// <param name="buffer">The byte array</param>
/// <returns>The hexadecimal value if successes, otherwise -1.</returns>
private static int ReadHex(ref int scan, int end, byte[] buffer)
private static int? ReadHex(ref int scan, int end, byte[] buffer)
{
if (scan == end)
{
return -1;
return null;
}
var value = buffer[scan++];
@ -331,7 +331,7 @@ namespace Microsoft.Net.Http.Server
if (!isHead)
{
return -1;
return null;
}
if (value <= '9')
@ -350,7 +350,7 @@ namespace Microsoft.Net.Http.Server
private static bool SkipUnescape(int value1, int value2)
{
// skip %2F
// skip %2F - '/'
if (value1 == 2 && value2 == 15)
{
return true;