/// <summary>
/// Initializes a new instance of the <see cref="FormUrlEncodedParser"/> class.
/// </summary>
/// <param name="nameValuePairs">The collection to which name value pairs are added as they are parsed.</param>
/// <param name="maxMessageSize">Maximum length of all the individual name value pairs.</param>
public FormUrlEncodedParser(ICollection <KeyValuePair <string, string> > nameValuePairs, long maxMessageSize)
{
// The minimum length which would be an empty buffer
if (maxMessageSize < MinMessageSize)
{
throw Error.ArgumentMustBeGreaterThanOrEqualTo("maxMessageSize", maxMessageSize, MinMessageSize);
}
if (nameValuePairs == null)
{
throw Error.ArgumentNull("nameValuePairs");
}
_nameValuePairs = nameValuePairs;
_maxMessageSize = maxMessageSize;
_currentNameValuePair = new CurrentNameValuePair();
}
/// <summary>
/// Initializes a new instance of the <see cref="FormUrlEncodedParser"/> class.
/// </summary>
/// <param name="nameValuePairs">The collection to which name value pairs are added as they are parsed.</param>
/// <param name="maxMessageSize">Maximum length of all the individual name value pairs.</param>
public FormUrlEncodedParser(ICollection<KeyValuePair<string, string>> nameValuePairs, long maxMessageSize)
{
// The minimum length which would be an empty buffer
if (maxMessageSize < MinMessageSize)
{
throw Error.ArgumentMustBeGreaterThanOrEqualTo("maxMessageSize", maxMessageSize, MinMessageSize);
}
if (nameValuePairs == null)
{
throw Error.ArgumentNull("nameValuePairs");
}
_nameValuePairs = nameValuePairs;
_maxMessageSize = maxMessageSize;
_currentNameValuePair = new CurrentNameValuePair();
}
/// <summary>
/// Initializes a new instance of the <see cref="FormUrlEncodedParser"/> class.
/// </summary>
/// <param name="nameValuePairs">The collection to which name value pairs are added as they are parsed.</param>
/// <param name="maxMessageSize">Maximum length of all the individual name value pairs.</param>
public FormUrlEncodedParser(ICollection<KeyValuePair<string, string>> nameValuePairs, long maxMessageSize)
{
// The minimum length which would be an empty buffer
if (maxMessageSize < MinMessageSize)
{
throw new ArgumentOutOfRangeException("maxMessageSize", maxMessageSize, RS.Format(Properties.Resources.ArgumentMustBeGreaterThanOrEqualTo, MinMessageSize));
}
if (nameValuePairs == null)
{
throw new ArgumentNullException("nameValuePairs");
}
_nameValuePairs = nameValuePairs;
_maxMessageSize = maxMessageSize;
_currentNameValuePair = new CurrentNameValuePair();
}
/// <summary>
/// Initializes a new instance of the <see cref="FormUrlEncodedParser"/> class.
/// </summary>
/// <param name="nameValuePairs">The collection to which name value pairs are added as they are parsed.</param>
/// <param name="maxMessageSize">Maximum length of all the individual name value pairs.</param>
public FormUrlEncodedParser(ICollection <KeyValuePair <string, string> > nameValuePairs, long maxMessageSize)
{
// The minimum length which would be an empty buffer
if (maxMessageSize < MinMessageSize)
{
throw new ArgumentOutOfRangeException("maxMessageSize", maxMessageSize, RS.Format(Properties.Resources.ArgumentMustBeGreaterThanOrEqualTo, MinMessageSize));
}
if (nameValuePairs == null)
{
throw new ArgumentNullException("nameValuePairs");
}
_nameValuePairs = nameValuePairs;
_maxMessageSize = maxMessageSize;
_currentNameValuePair = new CurrentNameValuePair();
}
/// <summary>
/// Initializes a new instance of the <see cref="FormUrlEncodedParser"/> class.
/// </summary>
/// <param name="nameValuePairs">The collection to which name value pairs are added as they are parsed.</param>
/// <param name="maxMessageSize">Maximum length of all the individual name value pairs.</param>
public FormUrlEncodedParser(ICollection<KeyValuePair<string, string>> nameValuePairs, long maxMessageSize)
{
// The minimum length which would be an empty buffer
if (maxMessageSize < MinMessageSize)
{
throw new ArgumentOutOfRangeException("maxMessageSize", maxMessageSize, "The thing was out of range... and stuff.");
}
if (nameValuePairs == null)
{
throw new ArgumentNullException("nameValuePairs");
}
_nameValuePairs = nameValuePairs;
_maxMessageSize = maxMessageSize;
_currentNameValuePair = new CurrentNameValuePair();
}
private static ParserState ParseNameValuePairs(
byte[] buffer,
int bytesReady,
ref int bytesConsumed,
ref NameValueState nameValueState,
long maximumLength,
ref long totalBytesConsumed,
CurrentNameValuePair currentNameValuePair,
ICollection <KeyValuePair <string, string> > nameValuePairs
)
{
Contract.Assert(
(bytesReady - bytesConsumed) >= 0,
"ParseNameValuePairs()|(inputBufferLength - bytesParsed) < 0"
);
Contract.Assert(
maximumLength <= 0 || totalBytesConsumed <= maximumLength,
"ParseNameValuePairs()|Headers already read exceeds limit."
);
// Remember where we started.
int initialBytesParsed = bytesConsumed;
int segmentStart;
// Set up parsing status with what will happen if we exceed the buffer.
ParserState parseStatus = ParserState.DataTooBig;
long effectiveMax =
maximumLength <= 0
? Int64.MaxValue
: maximumLength - totalBytesConsumed + initialBytesParsed;
if (bytesReady < effectiveMax)
{
parseStatus = ParserState.NeedMoreData;
effectiveMax = bytesReady;
}
Contract.Assert(
bytesConsumed < effectiveMax,
"We have already consumed more than the max buffer length."
);
switch (nameValueState)
{
case NameValueState.Name:
segmentStart = bytesConsumed;
while (buffer[bytesConsumed] != '=' && buffer[bytesConsumed] != '&')
{
if (++bytesConsumed == effectiveMax)
{
string name = Encoding.UTF8.GetString(
buffer,
segmentStart,
bytesConsumed - segmentStart
);
currentNameValuePair.Name.Append(name);
goto quit;
}
}
if (bytesConsumed > segmentStart)
{
string name = Encoding.UTF8.GetString(
buffer,
segmentStart,
bytesConsumed - segmentStart
);
currentNameValuePair.Name.Append(name);
}
// Check if we got name=value or just name
if (buffer[bytesConsumed] == '=')
{
// Move part the '='
nameValueState = NameValueState.Value;
if (++bytesConsumed == effectiveMax)
{
goto quit;
}
goto case NameValueState.Value;
}
else
{
// Copy parsed name-only to collection
currentNameValuePair.CopyNameOnlyTo(nameValuePairs);
// Move past the '&' but stay in same state
if (++bytesConsumed == effectiveMax)
{
goto quit;
}
goto case NameValueState.Name;
}
case NameValueState.Value:
segmentStart = bytesConsumed;
while (buffer[bytesConsumed] != '&')
{
if (++bytesConsumed == effectiveMax)
{
string value = Encoding.UTF8.GetString(
buffer,
segmentStart,
bytesConsumed - segmentStart
);
currentNameValuePair.Value.Append(value);
goto quit;
}
}
if (bytesConsumed > segmentStart)
{
string value = Encoding.UTF8.GetString(
buffer,
segmentStart,
bytesConsumed - segmentStart
);
currentNameValuePair.Value.Append(value);
}
// Copy parsed name value pair to collection
currentNameValuePair.CopyTo(nameValuePairs);
// Move past the '&'
nameValueState = NameValueState.Name;
if (++bytesConsumed == effectiveMax)
{
goto quit;
}
goto case NameValueState.Name;
}
quit:
totalBytesConsumed += bytesConsumed - initialBytesParsed;
return(parseStatus);
}
private static ParserState ParseNameValuePairs(
byte[] buffer,
int bytesReady,
ref int bytesConsumed,
ref NameValueState nameValueState,
long maximumLength,
ref long totalBytesConsumed,
CurrentNameValuePair currentNameValuePair,
ICollection<KeyValuePair<string, string>> nameValuePairs)
{
Contract.Assert((bytesReady - bytesConsumed) >= 0, "ParseNameValuePairs()|(inputBufferLength - bytesParsed) < 0");
Contract.Assert(maximumLength <= 0 || totalBytesConsumed <= maximumLength, "ParseNameValuePairs()|Headers already read exceeds limit.");
// Remember where we started.
int initialBytesParsed = bytesConsumed;
int segmentStart;
// Set up parsing status with what will happen if we exceed the buffer.
ParserState parseStatus = ParserState.DataTooBig;
long effectiveMax = maximumLength <= 0 ? Int64.MaxValue : maximumLength - totalBytesConsumed + initialBytesParsed;
if (bytesReady < effectiveMax)
{
parseStatus = ParserState.NeedMoreData;
effectiveMax = bytesReady;
}
Contract.Assert(bytesConsumed < effectiveMax, "We have already consumed more than the max buffer length.");
switch (nameValueState)
{
case NameValueState.Name:
segmentStart = bytesConsumed;
while (buffer[bytesConsumed] != '=' && buffer[bytesConsumed] != '&')
{
if (++bytesConsumed == effectiveMax)
{
string name = Encoding.UTF8.GetString(buffer, segmentStart, bytesConsumed - segmentStart);
currentNameValuePair.Name.Append(name);
goto quit;
}
}
if (bytesConsumed > segmentStart)
{
string name = Encoding.UTF8.GetString(buffer, segmentStart, bytesConsumed - segmentStart);
currentNameValuePair.Name.Append(name);
}
// Check if we got name=value or just name
if (buffer[bytesConsumed] == '=')
{
// Move part the '='
nameValueState = NameValueState.Value;
if (++bytesConsumed == effectiveMax)
{
goto quit;
}
goto case NameValueState.Value;
}
else
{
// Copy parsed name-only to collection
currentNameValuePair.CopyNameOnlyTo(nameValuePairs);
// Move past the '&' but stay in same state
if (++bytesConsumed == effectiveMax)
{
goto quit;
}
goto case NameValueState.Name;
}
case NameValueState.Value:
segmentStart = bytesConsumed;
while (buffer[bytesConsumed] != '&')
{
if (++bytesConsumed == effectiveMax)
{
string value = Encoding.UTF8.GetString(buffer, segmentStart, bytesConsumed - segmentStart);
currentNameValuePair.Value.Append(value);
goto quit;
}
}
if (bytesConsumed > segmentStart)
{
string value = Encoding.UTF8.GetString(buffer, segmentStart, bytesConsumed - segmentStart);
currentNameValuePair.Value.Append(value);
}
// Copy parsed name value pair to collection
currentNameValuePair.CopyTo(nameValuePairs);
// Move past the '&'
nameValueState = NameValueState.Name;
if (++bytesConsumed == effectiveMax)
{
goto quit;
}
goto case NameValueState.Name;
}
quit:
totalBytesConsumed += bytesConsumed - initialBytesParsed;
return parseStatus;
}
