public static CredentialsRequest Parse(XmlReader reader)
{
CredentialsRequest credentialsRequest = new CredentialsRequest();
reader.MoveToContent();
credentialsRequest.CredentialsRequestID = reader.GetAttribute(@"credentialsRequestID");
reader.Read();
reader.MoveToContent();
credentialsRequest.Identity =
reader.ReadElementContentAsString(@"identity", @"http://schemas.microsoft.com/2006/09/sip/mrasp");
if (reader.IsStartElement(@"location"))
{
credentialsRequest.Location = Common.ParseLocation(reader.ReadElementContentAsString());
}
if (reader.IsStartElement(@"duration"))
{
credentialsRequest.Duration = (uint)reader.ReadElementContentAsInt();
}
reader.MoveToContent();
reader.ReadEndElement();
return(credentialsRequest);
}
public static Request Parse(XmlReader reader)
{
try
{
Request request = new Request();
if (reader.IsStartElement(@"request") == false)
{
throw new MrasException();
}
request.RequestId = reader.GetAttribute(@"requestID");
request.Version = reader.GetAttribute(@"version");
request.To = reader.GetAttribute(@"to");
request.From = reader.GetAttribute(@"from");
request.Route = Common.ParseRoute(reader.GetAttribute(@"route"));
request.CredentialsRequests = new List <CredentialsRequest>();
reader.Read();
while (CredentialsRequest.CanParse(reader))
{
request.CredentialsRequests.Add(CredentialsRequest.Parse(reader));
}
if (request.CredentialsRequests.Count <= 0)
{
throw new MrasException();
}
if (request.CredentialsRequests.Count > 100)
{
throw new MrasException(ReasonPhrase.RequestTooLarge);
}
return(request);
}
catch (XmlException ex)
{
throw WrapException(ex);
}
catch (InvalidOperationException ex)
{
throw WrapException(ex);
}
catch (ArgumentException ex)
{
throw WrapException(ex);
}
catch (Exception)
{
throw;
}
}
public static CredentialsRequest Parse(XmlReader reader)
{
CredentialsRequest credentialsRequest = new CredentialsRequest();
reader.MoveToContent();
credentialsRequest.CredentialsRequestID = reader.GetAttribute(@"credentialsRequestID");
reader.Read();
reader.MoveToContent();
credentialsRequest.Identity =
reader.ReadElementContentAsString(@"identity", @"http://schemas.microsoft.com/2006/09/sip/mrasp");
if (reader.IsStartElement(@"location"))
credentialsRequest.Location = Common.ParseLocation(reader.ReadElementContentAsString());
if (reader.IsStartElement(@"duration"))
credentialsRequest.Duration = (uint)reader.ReadElementContentAsInt();
reader.MoveToContent();
reader.ReadEndElement();
return credentialsRequest;
}
private CredentialsResponse Process(CredentialsRequest credentialsRequest, int versionMajor)
{
TokenBlob1 tokenBlob = (versionMajor == 1) ? new TokenBlob1() : new TokenBlob2();
using (HMACSHA1 sha1 = new HMACSHA1(key0))
{
UTF8Encoding utf8 = new UTF8Encoding();
tokenBlob.ClientID = sha1.ComputeHash(utf8.GetBytes(credentialsRequest.Identity));
}
byte[] username = Username.GetBytes(Key1, tokenBlob);
byte[] password = Password.GetBytes(Key2, username);
IEnumerable<MediaRelay> mediaRelays1 = null, mediaRelays2 = null;
if (credentialsRequest.Location == null || credentialsRequest.Location == Location.Intranet)
mediaRelays2 = intranetServers.Select<TurnServerInfo, MediaRelay>(
turnServer => new MediaRelay()
{
Location = Location.Intranet,
HostName = turnServer.Fqdn,
TcpPort = turnServer.TcpPort,
UdpPort = turnServer.UdpPort,
});
if (credentialsRequest.Location == null || credentialsRequest.Location == Location.Internet)
mediaRelays2 = internetServers.Select <TurnServerInfo, MediaRelay>(
turnServer => new MediaRelay()
{
Location = Location.Internet,
HostName = turnServer.Fqdn,
TcpPort = turnServer.TcpPort,
UdpPort = turnServer.UdpPort,
});
return new CredentialsResponse()
{
CredentialsRequestID = credentialsRequest.CredentialsRequestID,
Duration = Math.Min(credentialsRequest.Duration, Duration),
Username = Convert.ToBase64String(username),
Password = Convert.ToBase64String(password),
MediaRelays1 = mediaRelays1,
MediaRelays2 = mediaRelays2,
};
}
