private static void ReadMediaTypeParameter(string text, ref int textIndex, ref KeyValuePair <string, string>[] parameters)
{
int startIndex = textIndex;
if (ReadToken(text, ref textIndex))
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_MediaTypeMissingValue);
}
string parameterName = text.Substring(startIndex, textIndex - startIndex);
if (text[textIndex] != '=')
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_MediaTypeMissingValue);
}
textIndex++;
string str2 = ReadQuotedParameterValue(parameterName, text, ref textIndex);
if (parameters == null)
{
parameters = new KeyValuePair <string, string> [1];
}
else
{
KeyValuePair <string, string>[] destinationArray = new KeyValuePair <string, string> [parameters.Length + 1];
Array.Copy(parameters, destinationArray, parameters.Length);
parameters = destinationArray;
}
parameters[parameters.Length - 1] = new KeyValuePair <string, string>(parameterName, str2);
}
private static MediaType ReadMediaType(string text)
{
Debug.Assert(text != null, "text != null");
string type;
string subType;
int textIndex = 0;
ReadMediaTypeAndSubtype(text, ref textIndex, out type, out subType);
KeyValuePair <string, string>[] parameters = null;
while (!SkipWhitespace(text, ref textIndex))
{
if (text[textIndex] != ';')
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_MediaTypeRequiresSemicolonBeforeParameter);
}
textIndex++;
if (SkipWhitespace(text, ref textIndex))
{
break;
}
ReadMediaTypeParameter(text, ref textIndex, ref parameters);
}
return(new MediaType(type, subType, parameters));
}
private static void ReadMediaTypeAndSubtype(string text, ref int textIndex, out string type, out string subType)
{
Debug.Assert(text != null, "text != null");
int textStart = textIndex;
if (ReadToken(text, ref textIndex))
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_MediaTypeUnspecified);
}
if (text[textIndex] != '/')
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_MediaTypeRequiresSlash);
}
type = text.Substring(textStart, textIndex - textStart);
textIndex++;
int subTypeStart = textIndex;
ReadToken(text, ref textIndex);
if (textIndex == subTypeStart)
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_MediaTypeRequiresSubType);
}
subType = text.Substring(subTypeStart, textIndex - subTypeStart);
}
private static Encoding EncodingFromName(string name)
{
if (name == null)
{
return(MissingEncoding);
}
name = name.Trim();
if (name.Length == 0)
{
return(MissingEncoding);
}
else
{
try
{
#if ASTORIA_LIGHT
return(Encoding.UTF8);
#else
return(Encoding.GetEncoding(name));
#endif
}
catch (ArgumentException)
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_EncodingNotSupported(name));
}
}
}
private static string ReadQuotedParameterValue(string parameterName, string headerText, ref int textIndex)
{
StringBuilder parameterValue = new StringBuilder();
bool valueIsQuoted = false;
if (textIndex < headerText.Length)
{
if (headerText[textIndex] == '\"')
{
textIndex++;
valueIsQuoted = true;
}
}
while (textIndex < headerText.Length)
{
char currentChar = headerText[textIndex];
if (currentChar == '\\' || currentChar == '\"')
{
if (!valueIsQuoted)
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_EscapeCharWithoutQuotes(parameterName));
}
textIndex++;
if (currentChar == '\"')
{
valueIsQuoted = false;
break;
}
if (textIndex >= headerText.Length)
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_EscapeCharAtEnd(parameterName));
}
currentChar = headerText[textIndex];
}
else
if (!IsHttpToken(currentChar))
{
break;
}
parameterValue.Append(currentChar);
textIndex++;
}
if (valueIsQuoted)
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_ClosingQuoteNotFound(parameterName));
}
return(parameterValue.ToString());
}
internal static KeyValuePair <string, string>[] ReadContentType(string contentType, out string mime, out Encoding encoding)
{
if (string.IsNullOrEmpty(contentType))
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_ContentTypeMissing);
}
MediaType type = ReadMediaType(contentType);
mime = type.MimeType;
encoding = type.SelectEncoding();
return(type.Parameters);
}
private static string ReadQuotedParameterValue(string parameterName, string headerText, ref int textIndex)
{
StringBuilder builder = new StringBuilder();
bool flag = false;
if ((textIndex < headerText.Length) && (headerText[textIndex] == '"'))
{
textIndex++;
flag = true;
}
while (textIndex < headerText.Length)
{
char c = headerText[textIndex];
if ((c == '\\') || (c == '"'))
{
if (!flag)
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_EscapeCharWithoutQuotes(parameterName));
}
textIndex++;
if (c == '"')
{
flag = false;
break;
}
if (textIndex >= headerText.Length)
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_EscapeCharAtEnd(parameterName));
}
c = headerText[textIndex];
}
else if (!IsHttpToken(c))
{
break;
}
builder.Append(c);
textIndex++;
}
if (flag)
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_ClosingQuoteNotFound(parameterName));
}
return(builder.ToString());
}
private static void ReadMediaTypeAndSubtype(string text, ref int textIndex, out string type, out string subType)
{
int startIndex = textIndex;
if (ReadToken(text, ref textIndex))
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_MediaTypeUnspecified);
}
if (text[textIndex] != '/')
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_MediaTypeRequiresSlash);
}
type = text.Substring(startIndex, textIndex - startIndex);
textIndex++;
int num2 = textIndex;
ReadToken(text, ref textIndex);
if (textIndex == num2)
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_MediaTypeRequiresSubType);
}
subType = text.Substring(num2, textIndex - num2);
}
private static Encoding EncodingFromName(string name)
{
Encoding encoding;
if (name == null)
{
return(MissingEncoding);
}
name = name.Trim();
if (name.Length == 0)
{
return(MissingEncoding);
}
try
{
encoding = Encoding.GetEncoding(name);
}
catch (ArgumentException)
{
throw Error.HttpHeaderFailure(400, Strings.HttpProcessUtility_EncodingNotSupported(name));
}
return(encoding);
}