/// <summary>
/// Default constructor.
/// </summary>
/// <param name="challenge">Client challenge.</param>
/// <param name="realm">Realm value. This must be one value of the challenge Realm.</param>
/// <param name="userName">User name.</param>
/// <param name="password">User password.</param>
/// <param name="cnonce">Client nonce value.</param>
/// <param name="nonceCount">Nonce count. One-based client authentication attempt number. Normally this value is 1.</param>
/// <param name="qop">Indicates what "quality of protection" the client accepted. This must be one value of the challenge QopOptions.</param>
/// <param name="digestUri">Digest URI.</param>
/// <exception cref="ArgumentNullException">Is raised when <b>challenge</b>,<b>realm</b>,<b>password</b>,<b>nonce</b>,<b>qop</b> or <b>digestUri</b> is null reference.</exception>
public AUTH_SASL_DigestMD5_Response(AUTH_SASL_DigestMD5_Challenge challenge,string realm,string userName,string password,string cnonce,int nonceCount,string qop,string digestUri)
{
if(challenge == null){
throw new ArgumentNullException("challenge");
}
if(realm == null){
throw new ArgumentNullException("realm");
}
if(userName == null){
throw new ArgumentNullException("userName");
}
if(password == null){
throw new ArgumentNullException("password");
}
if(cnonce == null){
throw new ArgumentNullException("cnonce");
}
if(qop == null){
throw new ArgumentNullException("qop");
}
if(digestUri == null){
throw new ArgumentNullException("digestUri");
}
m_pChallenge = challenge;
m_Realm = realm;
m_UserName = userName;
m_Password = password;
m_Nonce = m_pChallenge.Nonce;
m_Cnonce = cnonce;
m_NonceCount = nonceCount;
m_Qop = qop;
m_DigestUri = digestUri;
m_Response = CalculateResponse(userName,password);
m_Charset = challenge.Charset;
}
/// <summary>
/// Parses DIGEST-MD5 challenge from challenge-string.
/// </summary>
/// <param name="challenge">Challenge string.</param>
/// <returns>Returns DIGEST-MD5 challenge.</returns>
/// <exception cref="ArgumentNullException">Is raised when <b>challenge</b> is null reference.</exception>
/// <exception cref="ParseException">Is raised when challenge parsing + validation fails.</exception>
public static AUTH_SASL_DigestMD5_Challenge Parse(string challenge)
{
if(challenge == null){
throw new ArgumentNullException("challenge");
}
AUTH_SASL_DigestMD5_Challenge retVal = new AUTH_SASL_DigestMD5_Challenge();
string[] parameters = TextUtils.SplitQuotedString(challenge,',');
foreach(string parameter in parameters){
string[] name_value = parameter.Split(new char[]{'='},2);
string name = name_value[0].Trim();
if(name_value.Length == 2){
if(name.ToLower() == "realm"){
retVal.m_Realm = TextUtils.UnQuoteString(name_value[1]).Split(',');
}
else if(name.ToLower() == "nonce"){
retVal.m_Nonce = TextUtils.UnQuoteString(name_value[1]);
}
else if(name.ToLower() == "qop"){
retVal.m_QopOptions = TextUtils.UnQuoteString(name_value[1]).Split(',');
}
else if(name.ToLower() == "stale"){
retVal.m_Stale = Convert.ToBoolean(TextUtils.UnQuoteString(name_value[1]));
}
else if(name.ToLower() == "maxbuf"){
retVal.m_Maxbuf = Convert.ToInt32(TextUtils.UnQuoteString(name_value[1]));
}
else if(name.ToLower() == "charset"){
retVal.m_Charset = TextUtils.UnQuoteString(name_value[1]);
}
else if(name.ToLower() == "algorithm"){
retVal.m_Algorithm = TextUtils.UnQuoteString(name_value[1]);
}
else if(name.ToLower() == "cipher-opts"){
retVal.m_CipherOpts = TextUtils.UnQuoteString(name_value[1]);
}
//else if(name.ToLower() == "auth-param"){
// retVal.m_AuthParam = TextUtils.UnQuoteString(name_value[1]);
//}
}
}
/* Validate required fields.
Per RFC 2831 2.1.1. Only [nonce algorithm] parameters are required.
*/
if(string.IsNullOrEmpty(retVal.Nonce)){
throw new ParseException("The challenge-string doesn't contain required parameter 'nonce' value.");
}
if(string.IsNullOrEmpty(retVal.Algorithm)){
throw new ParseException("The challenge-string doesn't contain required parameter 'algorithm' value.");
}
return retVal;
}