/// <summary>
/// Parse a message value.
/// </summary>
/// <param name="name">Name of header being parsed.</param>
/// <param name="reader">Reader containing the string that should be parsed.</param>
/// <returns>Newly created header.</returns>
/// <exception cref="ParseException">Header value is malformed.</exception>
public IHeader Parse(string name, ITextReader reader)
{
string type = reader.ReadUntil("/");
reader.Consume('/');
string subType = reader.ReadToEnd(';');
reader.Consume(';', ' ', '\t');
var contentType = new ContentType {
SubType = subType, Type = type
};
UriParser.ParseParameters(contentType.Parameters, reader);
return(contentType);
}
/// <summary>
/// Parse a message value.
/// </summary>
/// <param name="name">Name of header being parsed.</param>
/// <param name="reader">Reader containing the string that should be parsed.</param>
/// <returns>Newly created header.</returns>
/// <exception cref="ParseException">Header value is malformed.</exception>
/// <example>
/// Authorization: Digest username="******",
/// realm="biloxi.com",
/// nonce="dcd98b7102dd2f0e8b11d0f600bfb0c093",
/// uri="sip:[email protected]",
/// qop=auth,
/// nc=00000001,
/// cnonce="0a4f113b",
/// response="6629fae49393a05397450978507c4ef1",
/// opaque="5ccc069c403ebaf9f0171e9517f40e41"
/// </example>
public IHeader Parse(string name, ITextReader reader)
{
reader.ConsumeWhiteSpaces();
string digest = reader.ReadWord().ToLower();
if (digest != "digest")
{
throw new ParseException("Authorization header is not digest authentication");
}
reader.ConsumeWhiteSpaces();
var parameters = new KeyValueCollection();
UriParser.ParseParameters(parameters, reader, ',');
var header = new Authorization(name)
{
UserName = parameters["username"],
Realm = parameters["realm"],
Nonce = parameters["nonce"],
Qop = parameters["qop"],
ClientNonce = parameters["cnonce"],
Opaque = parameters["opaque"],
Response = parameters["response"],
Uri = UriParser.Parse(parameters["uri"])
};
try
{
header.NonceCounter = int.Parse(parameters["nc"]);
}
catch (Exception err)
{
throw new ParseException("Failed to parse 'nc' in Authorization header.", err);
}
return(header);
}
/// <summary>
/// Parse a message value.
/// </summary>
/// <param name="name">Name of header being parsed.</param>
/// <param name="reader">Reader containing the string that should be parsed.</param>
/// <returns>Newly created header.</returns>
/// <exception cref="ParseException">Header value is malformed.</exception>
/// <example>
/// Digest realm="atlanta.com",
/// domain="sip:boxesbybob.com", qop="auth",
/// nonce="f84f1cec41e6cbe5aea9c8e88d359",
/// opaque="", stale=FALSE, algorithm=MD5
/// </example>
public IHeader Parse(string name, ITextReader reader)
{
reader.ConsumeWhiteSpaces();
string digest = reader.ReadWord().ToLower();
if (digest != "digest")
{
throw new ParseException("Authorization header is not digest authentication");
}
reader.ConsumeWhiteSpaces();
var parameters = new KeyValueCollection();
UriParser.ParseParameters(parameters, reader, ',');
var header = new Authenticate(name)
{
Algortihm = parameters["algorithm"],
Domain = UriParser.Parse(parameters["domain"]),
Realm = parameters["realm"],
Nonce = parameters["nonce"],
Qop = parameters["qop"],
Opaque = parameters["opaque"]
};
try
{
header.Stale = bool.Parse(parameters["stale"]);
}
catch (Exception err)
{
throw new ParseException("Failed to parse 'stale' in WWW-Authenticate header.", err);
}
return(header);
}
public static ViaEntry ParseEntry(ITextReader reader)
{
//SIP/2.0/UDP erlang.bell-telephone.com:5060;branch=z9hG4bK87asdks7
var entry = new ViaEntry();
// read SIP/
reader.ConsumeWhiteSpaces();
entry.Protocol = reader.ReadUntil("/ \t");
if (entry.Protocol == null)
{
throw new FormatException("Expected Via header to start with 'SIP' or 'SIPS'.");
}
reader.ConsumeWhiteSpaces('/');
// read 2.0/
entry.SipVersion = reader.ReadUntil("/ \t");
if (entry.SipVersion == null)
{
throw new FormatException("Expected to find sip version in Via header.");
}
reader.ConsumeWhiteSpaces('/');
// read UDP or TCP
entry.Transport = reader.ReadWord();
if (entry.Transport == null)
{
throw new FormatException("Expected to find transport protocol after sip version in Via header.");
}
reader.ConsumeWhiteSpaces();
entry.Domain = reader.ReadUntil(";: \t");
if (entry.Domain == null)
{
throw new FormatException("Failed to find domain in via header.");
}
reader.ConsumeWhiteSpaces();
if (reader.Current == ':')
{
reader.Read();
reader.ConsumeWhiteSpaces();
string temp = reader.ReadToEnd("; \t");
reader.ConsumeWhiteSpaces();
int port;
if (!int.TryParse(temp, out port))
{
throw new FormatException("Invalid port specified.");
}
entry.Port = port;
}
UriParser.ParseParameters(entry.Parameters, reader);
string rport = entry.Parameters["rport"];
if (!string.IsNullOrEmpty(rport)) //parameter can exist, but be empty. = rport requested.
{
int value;
if (!int.TryParse(rport, out value))
{
throw new FormatException("RPORT is not a number.");
}
entry.Rport = value;
}
return(entry);
}
