public Authorization Authenticate(string challenge, NetworkCredential credential, object sessionCookie, string spn, ChannelBinding channelBindingToken)
{
Authorization authorization;
if (Logging.On)
{
Logging.Enter(Logging.Web, this, "Authenticate", (string) null);
}
try
{
lock (this.sessions)
{
NTAuthentication clientContext = this.sessions[sessionCookie] as NTAuthentication;
if (clientContext == null)
{
if (credential == null)
{
return null;
}
this.sessions[sessionCookie] = clientContext = new NTAuthentication(false, "Negotiate", credential, spn, ContextFlags.AcceptStream | ContextFlags.Connection, channelBindingToken);
}
string token = null;
if (!clientContext.IsCompleted)
{
SecurityStatus status;
byte[] incomingBlob = null;
if (challenge != null)
{
incomingBlob = Convert.FromBase64String(challenge);
}
byte[] inArray = clientContext.GetOutgoingBlob(incomingBlob, false, out status);
if (clientContext.IsCompleted && (inArray == null))
{
token = "\r\n";
}
if (inArray != null)
{
token = Convert.ToBase64String(inArray);
}
}
else
{
token = this.GetSecurityLayerOutgoingBlob(challenge, clientContext);
}
authorization = new Authorization(token, clientContext.IsCompleted);
}
}
finally
{
if (Logging.On)
{
Logging.Exit(Logging.Web, this, "Authenticate", (string) null);
}
}
return authorization;
}
protected override void OnCreateDependencies()
{
// create a user
var userResponse = Client.Post("/user", new { login = "******", password = NewUserPassword, role = 1, status = 0 }, auth: Admin);
Assert.That(userResponse.Status, Is.EqualTo(ExpectedCreatedStatus));
var userId = (int)userResponse.Json["id"];
User = new Authorization("User", "_ut", NewUserPassword, userId);
RegisterForDeletion("/user/" + userId);
// create a client
var clientResponse = Client.Post("/oauth/client", new { name = "_ut", oauthId = "_ut_", domain = "_ut.com", redirectUri = "_ut.com", subnet = "127.0.0.0/24" }, auth: Admin);
Assert.That(clientResponse.Status, Is.EqualTo(ExpectedCreatedStatus));
ClientID = (int)clientResponse.Json["id"];
ClientSecret = (string)clientResponse.Json["oauthSecret"];
RegisterForDeletion("/oauth/client/" + ClientID);
}
internal static void BindModule(Uri uri, Authorization response, IAuthenticationModule module)
{
if (response.ProtectionRealm != null)
{
string[] protectionRealm = response.ProtectionRealm;
for (int i = 0; i < protectionRealm.Length; i++)
{
s_ModuleBinding.Add(protectionRealm[i], module.AuthenticationType);
}
}
else
{
string prefix = generalize(uri);
s_ModuleBinding.Add(prefix, module.AuthenticationType);
}
}
public Authorization Authenticate(string challenge, NetworkCredential credential, object sessionCookie, string spn, ChannelBinding channelBindingToken)
{
Authorization authorization;
if (Logging.On)
{
Logging.Enter(Logging.Web, this, "Authenticate", (string) null);
}
try
{
lock (this.sessions)
{
NetworkCredential credential2 = this.sessions[sessionCookie] as NetworkCredential;
if (credential2 == null)
{
if ((credential == null) || (credential is SystemNetworkCredential))
{
return null;
}
this.sessions[sessionCookie] = credential;
string userName = credential.UserName;
string domain = credential.Domain;
if ((domain != null) && (domain.Length > 0))
{
userName = domain + @"\" + userName;
}
return new Authorization(Convert.ToBase64String(Encoding.UTF8.GetBytes(userName)), false);
}
this.sessions.Remove(sessionCookie);
authorization = new Authorization(Convert.ToBase64String(Encoding.UTF8.GetBytes(credential2.Password)), true);
}
}
finally
{
if (Logging.On)
{
Logging.Exit(Logging.Web, this, "Authenticate", (string) null);
}
}
return authorization;
}
//
// CONSIDER V.NEXT
// creating a static hashtable for server nonces and keep track of nonce count
//
internal static Authorization Authenticate(HttpDigestChallenge digestChallenge, NetworkCredential NC, string spn, ChannelBinding binding) {
string username = NC.InternalGetUserName();
if (ValidationHelper.IsBlankString(username)) {
return null;
}
string password = NC.InternalGetPassword();
bool upgraded = IsUpgraded(digestChallenge.Nonce, binding);
if (upgraded)
{
digestChallenge.ServiceName = spn;
digestChallenge.ChannelBinding = hashChannelBinding(binding, digestChallenge.MD5provider);
}
if (digestChallenge.QopPresent) {
if (digestChallenge.ClientNonce==null || digestChallenge.Stale) {
GlobalLog.Print("HttpDigest::Authenticate() QopPresent:True, need new nonce. digestChallenge.ClientNonce:" + ValidationHelper.ToString(digestChallenge.ClientNonce) + " digestChallenge.Stale:" + digestChallenge.Stale.ToString());
if (upgraded)
{
digestChallenge.ClientNonce = createUpgradedNonce(digestChallenge);
}
else
{
digestChallenge.ClientNonce = createNonce(32);
}
digestChallenge.NonceCount = 1;
}
else {
GlobalLog.Print("HttpDigest::Authenticate() QopPresent:True, reusing nonce. digestChallenge.NonceCount:" + digestChallenge.NonceCount.ToString());
digestChallenge.NonceCount++;
}
}
StringBuilder authorization = new StringBuilder();
//
// look at username & password, if it's not ASCII we need to attempt some
// kind of encoding because we need to calculate the hash on byte[]
//
Charset usernameCharset = DetectCharset(username);
if (!digestChallenge.UTF8Charset && usernameCharset==Charset.UTF8) {
GlobalLog.Print("HttpDigest::Authenticate() can't authenticate with UNICODE username. failing auth.");
return null;
}
Charset passwordCharset = DetectCharset(password);
if (!digestChallenge.UTF8Charset && passwordCharset==Charset.UTF8) {
GlobalLog.Print("HttpDigest::Authenticate() can't authenticate with UNICODE password. failing auth.");
return null;
}
if (digestChallenge.UTF8Charset) {
// on the wire always use UTF8 when the server supports it
authorization.Append(pair(DA_charset, "utf-8", false));
authorization.Append(",");
if (usernameCharset==Charset.UTF8) {
username = CharsetEncode(username, Charset.UTF8);
authorization.Append(pair(DA_username, username, true));
authorization.Append(",");
}
else {
authorization.Append(pair(DA_username, CharsetEncode(username, Charset.UTF8), true));
authorization.Append(",");
username = CharsetEncode(username, usernameCharset);
}
}
else {
// otherwise UTF8 is not required
username = CharsetEncode(username, usernameCharset);
authorization.Append(pair(DA_username, username, true));
authorization.Append(",");
}
password = CharsetEncode(password, passwordCharset);
// no special encoding for the realm since we're just going to echo it back (encoding must have happened on the server).
authorization.Append(pair(DA_realm, digestChallenge.Realm, true));
authorization.Append(",");
authorization.Append(pair(DA_nonce, digestChallenge.Nonce, true));
authorization.Append(",");
authorization.Append(pair(DA_uri, digestChallenge.Uri, true));
if (digestChallenge.QopPresent) {
if (digestChallenge.Algorithm!=null) {
// consider: should we default to "MD5" here? IE does
authorization.Append(",");
authorization.Append(pair(DA_algorithm, digestChallenge.Algorithm, true)); // IE sends quotes - IIS needs them
}
authorization.Append(",");
authorization.Append(pair(DA_cnonce, digestChallenge.ClientNonce, true));
authorization.Append(",");
authorization.Append(pair(DA_nc, digestChallenge.NonceCount.ToString("x8", NumberFormatInfo.InvariantInfo), false));
// RAID#47397
// send only the QualityOfProtection we're using
// since we support only "auth" that's what we will send out
authorization.Append(",");
authorization.Append(pair(DA_qop, SupportedQuality, true)); // IE sends quotes - IIS needs them
if (upgraded)
{
authorization.Append(",");
authorization.Append(pair(DA_hasheddirs, HashedDirs, true));
authorization.Append(",");
authorization.Append(pair(DA_servicename, digestChallenge.ServiceName, true));
authorization.Append(",");
authorization.Append(pair(DA_channelbinding, digestChallenge.ChannelBinding, true));
}
}
// warning: this must be computed here
string responseValue = HttpDigest.responseValue(digestChallenge, username, password);
if (responseValue==null) {
return null;
}
authorization.Append(",");
authorization.Append(pair(DA_response, responseValue, true)); // IE sends quotes - IIS needs them
if (digestChallenge.Opaque!=null) {
authorization.Append(",");
authorization.Append(pair(DA_opaque, digestChallenge.Opaque, true));
}
GlobalLog.Print("HttpDigest::Authenticate() digestChallenge.Stale:" + digestChallenge.Stale.ToString());
// completion is decided in Update()
Authorization finalAuthorization = new Authorization(DigestClient.AuthType + " " + authorization.ToString(), false);
return finalAuthorization;
}
// On Windows XP and up, WDigest.dll supports the Digest authentication scheme (in addition to
// support for HTTP client sides, it also supports HTTP server side and SASL) through SSPI.
private Authorization XPDoAuthenticate(string challenge, HttpWebRequest httpWebRequest, ICredentials credentials, bool preAuthenticate) {
GlobalLog.Print("DigestClient::XPDoAuthenticate() challenge:[" + ValidationHelper.ToString(challenge) + "] httpWebRequest#" + ValidationHelper.HashString(httpWebRequest) + " credentials#" + ValidationHelper.HashString(credentials) + " preAuthenticate:" + preAuthenticate.ToString());
NTAuthentication authSession = null;
string incoming = null;
int index;
if (!preAuthenticate) {
index = AuthenticationManager.FindSubstringNotInQuotes(challenge, Signature);
if (index < 0) {
return null;
}
authSession = httpWebRequest.CurrentAuthenticationState.GetSecurityContext(this);
GlobalLog.Print("DigestClient::XPDoAuthenticate() key:" + ValidationHelper.HashString(httpWebRequest.CurrentAuthenticationState) + " retrieved authSession:" + ValidationHelper.HashString(authSession));
incoming = RefineDigestChallenge(challenge, index);
}
else {
#if WDIGEST_PREAUTH
GlobalLog.Print("DigestClient::XPDoAuthenticate() looking up digestChallenge for prefix:" + httpWebRequest.ChallengedUri.AbsoluteUri);
authSession = challengeCache.Lookup(httpWebRequest.ChallengedUri.AbsoluteUri) as NTAuthentication;
if (authSession==null) {
return null;
}
#else
GlobalLog.Print("DigestClient::XPDoAuthenticate() looking up digestChallenge for prefix:" + httpWebRequest.ChallengedUri.AbsoluteUri);
HttpDigestChallenge digestChallenge = challengeCache.Lookup(httpWebRequest.ChallengedUri.AbsoluteUri) as HttpDigestChallenge;
if (digestChallenge==null) {
return null;
}
GlobalLog.Print("DigestClient::XPDoAuthenticate() retrieved digestChallenge#" + ValidationHelper.HashString(digestChallenge) + " digestChallenge for prefix:" + httpWebRequest.ChallengedUri.AbsoluteUri);
digestChallenge = digestChallenge.CopyAndIncrementNonce();
digestChallenge.SetFromRequest(httpWebRequest);
incoming = digestChallenge.ToBlob();
#endif
}
UriComponents uriParts = 0;
Uri remoteUri = httpWebRequest.GetRemoteResourceUri();
if (httpWebRequest.CurrentMethod.ConnectRequest) {
uriParts = UriComponents.HostAndPort;
// Use the orriginal request Uri, not the proxy Uri
remoteUri = httpWebRequest.RequestUri;
}
else {
uriParts = UriComponents.PathAndQuery;
}
// here we use Address instead of ChallengedUri. This is because the
// Digest hash is generated using the uri as it is present on the wire
string rawUri = remoteUri.GetParts(uriParts, UriFormat.UriEscaped);
GlobalLog.Print("DigestClient::XPDoAuthenticate() rawUri:" + ValidationHelper.ToString(rawUri));
if (authSession==null) {
NetworkCredential NC = credentials.GetCredential(httpWebRequest.ChallengedUri, Signature);
GlobalLog.Print("DigestClient::XPDoAuthenticate() GetCredential() returns:" + ValidationHelper.ToString(NC));
if (NC == null || (!(NC is SystemNetworkCredential) && NC.InternalGetUserName().Length == 0))
{
return null;
}
ICredentialPolicy policy = AuthenticationManager.CredentialPolicy;
if (policy != null && !policy.ShouldSendCredential(httpWebRequest.ChallengedUri, httpWebRequest, NC, this))
return null;
SpnToken spn = httpWebRequest.CurrentAuthenticationState.GetComputeSpn(httpWebRequest);
GlobalLog.Print("NtlmClient::Authenticate() ChallengedSpn:" + ValidationHelper.ToString(spn));
ChannelBinding binding = null;
if (httpWebRequest.CurrentAuthenticationState.TransportContext != null)
{
binding = httpWebRequest.CurrentAuthenticationState.TransportContext.GetChannelBinding(ChannelBindingKind.Endpoint);
}
authSession =
new NTAuthentication(
NegotiationInfoClass.WDigest,
NC,
spn,
httpWebRequest,
binding);
GlobalLog.Print("DigestClient::XPDoAuthenticate() setting SecurityContext for:" + ValidationHelper.HashString(httpWebRequest.CurrentAuthenticationState) + " to authSession:" + ValidationHelper.HashString(authSession));
httpWebRequest.CurrentAuthenticationState.SetSecurityContext(authSession, this);
}
SecurityStatus statusCode;
string clientResponse;
GlobalLog.Print("DigestClient::XPDoAuthenticate() incoming:" + ValidationHelper.ToString(incoming));
#if WDIGEST_PREAUTH
clientResponse = authSession.GetOutgoingDigestBlob(incoming, httpWebRequest.CurrentMethod.Name, rawUri, null, preAuthenticate, true, out statusCode);
#else
clientResponse = authSession.GetOutgoingDigestBlob(incoming, httpWebRequest.CurrentMethod.Name, rawUri, null, false, false, out statusCode);
#endif
if (clientResponse == null)
return null;
GlobalLog.Print("DigestClient::XPDoAuthenticate() GetOutgoingDigestBlob(" + incoming + ") returns:" + ValidationHelper.ToString(clientResponse));
Authorization digestResponse = new Authorization(AuthType + " " + clientResponse, authSession.IsCompleted, string.Empty, authSession.IsMutualAuthFlag);
if (!preAuthenticate && httpWebRequest.PreAuthenticate) {
// add this to the cache of challenges so we can preauthenticate
// use this DCR when avaialble to do this without calling HttpDigest.Interpret():
// 762115 3 WDigest should allow an application to retrieve the parsed domain directive
HttpDigestChallenge digestChallenge = HttpDigest.Interpret(incoming, -1, httpWebRequest);
string[] prefixes = digestChallenge.Domain==null ?
new string[]{httpWebRequest.ChallengedUri.GetParts(UriComponents.SchemeAndServer, UriFormat.UriEscaped)}
: digestChallenge.Domain.Split(singleSpaceArray);
// If Domain property is not set we associate Digest only with the server Uri namespace (used to do with whole server)
digestResponse.ProtectionRealm = digestChallenge.Domain==null ? null: prefixes;
for (int i=0; i<prefixes.Length; i++) {
GlobalLog.Print("DigestClient::XPDoAuthenticate() adding authSession#" + ValidationHelper.HashString(authSession) + " for prefix:" + prefixes[i]);
#if WDIGEST_PREAUTH
challengeCache.Add(prefixes[i], authSession);
#else
challengeCache.Add(prefixes[i], digestChallenge);
#endif
}
}
return digestResponse;
}
internal AuthenticateCallbackContext(SmtpConnection thisPtr, ISmtpAuthenticationModule module, NetworkCredential credential, string spn, ChannelBinding Token)
{
this.thisPtr = thisPtr;
this.module = module;
this.credential = credential;
this.spn = spn;
this.token = Token;
this.result = null;
}
/// <devdoc> /// <para> /// Binds an authentication response to a request for pre-authentication. /// </para> /// </devdoc> // Create binding between an authorization response and the module // generating that response // This association is used for deciding which module to invoke // for preauthentication purposes public abstract void BindModule(Uri uri, Authorization response, IAuthenticationModule module);
public Authorization Authenticate(string challenge, WebRequest webRequest, ICredentials credentials)
{
GlobalLog.Print("DigestClient::Authenticate(): " + challenge);
#if XP_WDIGEST
if (ComNetOS.IsPostWin2K)
{
return(XPDigestClient.Authenticate(challenge, webRequest, credentials));
}
#endif // #if XP_WDIGEST
GlobalLog.Assert(credentials != null, "DigestClient::Authenticate() credentials==null", "");
if (credentials == null || credentials is SystemNetworkCredential)
{
return(null);
}
HttpWebRequest httpWebRequest = webRequest as HttpWebRequest;
GlobalLog.Assert(httpWebRequest != null, "DigestClient::Authenticate() httpWebRequest==null", "");
if (httpWebRequest == null || httpWebRequest.ChallengedUri == null)
{
//
// there has been no challenge:
// 1) the request never went on the wire
// 2) somebody other than us is calling into AuthenticationManager
//
return(null);
}
int index = AuthenticationManager.FindSubstringNotInQuotes(challenge.ToLower(CultureInfo.InvariantCulture), Signature);
if (index < 0)
{
return(null);
}
string[] prefixes = null;
string rootPath = httpWebRequest.ChallengedUri.Scheme + "://" + httpWebRequest.ChallengedUri.Host;
HttpDigestChallenge digestChallenge = HttpDigest.Interpret(challenge, index, httpWebRequest);
if (digestChallenge == null)
{
return(null);
}
if (digestChallenge.Domain == null)
{
challengeCache.Add(rootPath, digestChallenge);
}
else
{
prefixes = digestChallenge.Domain.Split(" ".ToCharArray());
for (int i = 0; i < prefixes.Length; i++)
{
challengeCache.Add(prefixes[i], digestChallenge);
}
}
Authorization digestResponse = HttpDigest.Authenticate(digestChallenge, credentials);
if (digestResponse != null)
{
if (prefixes == null)
{
digestResponse.ProtectionRealm = new string[1];
digestResponse.ProtectionRealm[0] = rootPath;
}
else
{
digestResponse.ProtectionRealm = prefixes;
}
}
return(digestResponse);
}
private Authorization XPDoAuthenticate(string challenge, HttpWebRequest httpWebRequest, ICredentials credentials, bool preAuthenticate)
{
NTAuthentication securityContext = null;
string incomingBlob = null;
SecurityStatus status;
if (!preAuthenticate)
{
int index = AuthenticationManager.FindSubstringNotInQuotes(challenge, Signature);
if (index < 0)
{
return null;
}
securityContext = httpWebRequest.CurrentAuthenticationState.GetSecurityContext(this);
incomingBlob = RefineDigestChallenge(challenge, index);
}
else
{
HttpDigestChallenge challenge2 = challengeCache.Lookup(httpWebRequest.ChallengedUri.AbsoluteUri) as HttpDigestChallenge;
if (challenge2 == null)
{
return null;
}
challenge2 = challenge2.CopyAndIncrementNonce();
challenge2.SetFromRequest(httpWebRequest);
incomingBlob = challenge2.ToBlob();
}
UriComponents uriParts = 0;
if (httpWebRequest.CurrentMethod.ConnectRequest)
{
uriParts = UriComponents.HostAndPort;
}
else if (httpWebRequest.UsesProxySemantics)
{
uriParts = UriComponents.HttpRequestUrl;
}
else
{
uriParts = UriComponents.PathAndQuery;
}
string parts = httpWebRequest.GetRemoteResourceUri().GetParts(uriParts, UriFormat.UriEscaped);
if (securityContext == null)
{
NetworkCredential credential = credentials.GetCredential(httpWebRequest.ChallengedUri, Signature);
if ((credential == null) || (!(credential is SystemNetworkCredential) && (credential.InternalGetUserName().Length == 0)))
{
return null;
}
ICredentialPolicy credentialPolicy = AuthenticationManager.CredentialPolicy;
if ((credentialPolicy != null) && !credentialPolicy.ShouldSendCredential(httpWebRequest.ChallengedUri, httpWebRequest, credential, this))
{
return null;
}
string computeSpn = httpWebRequest.CurrentAuthenticationState.GetComputeSpn(httpWebRequest);
ChannelBinding channelBinding = null;
if (httpWebRequest.CurrentAuthenticationState.TransportContext != null)
{
channelBinding = httpWebRequest.CurrentAuthenticationState.TransportContext.GetChannelBinding(ChannelBindingKind.Endpoint);
}
securityContext = new NTAuthentication("WDigest", credential, computeSpn, httpWebRequest, channelBinding);
httpWebRequest.CurrentAuthenticationState.SetSecurityContext(securityContext, this);
}
string str4 = securityContext.GetOutgoingDigestBlob(incomingBlob, httpWebRequest.CurrentMethod.Name, parts, null, false, false, out status);
if (str4 == null)
{
return null;
}
Authorization authorization = new Authorization("Digest " + str4, securityContext.IsCompleted, string.Empty, securityContext.IsMutualAuthFlag);
if (!preAuthenticate && httpWebRequest.PreAuthenticate)
{
HttpDigestChallenge challenge3 = HttpDigest.Interpret(incomingBlob, -1, httpWebRequest);
string[] strArray = (challenge3.Domain == null) ? new string[] { httpWebRequest.ChallengedUri.GetParts(UriComponents.SchemeAndServer, UriFormat.UriEscaped) } : challenge3.Domain.Split(singleSpaceArray);
authorization.ProtectionRealm = (challenge3.Domain == null) ? null : strArray;
for (int i = 0; i < strArray.Length; i++)
{
challengeCache.Add(strArray[i], challenge3);
}
}
return authorization;
}
// Create binding between an authorization response and the module
// generating that response
// This association is used for deciding which module to invoke
// for preauthentication purposes
private static void createModuleBinding(WebRequest request, Authorization response, IAuthenticationModule module) {
if (!module.CanPreAuthenticate) {
return;
}
if (response.ProtectionRealm!=null) {
// The authentication module specified which Uri prefixes
// will be preauthenticated
string[] prefix = response.ProtectionRealm;
for (int k=0; k<prefix.Length; k++) {
//
// PrefixLookup is thread-safe
//
s_ModuleBinding.Add(prefix[k], module.AuthenticationType);
}
}
else {
// Otherwise use the default policy for "fabricating"
// some protection realm generalizing the particular Uri
// Consider: should this be ChallengedUri?
string prefix = generalize(request.RequestUri);
//
// PrefixLookup is thread-safe
//
s_ModuleBinding.Add(prefix, module.AuthenticationType);
}
return;
}
/// <devdoc>
/// <para>
/// Binds an authentication response to a request for pre-authentication.
/// </para>
/// </devdoc>
// Create binding between an authorization response and the module
// generating that response
// This association is used for deciding which module to invoke
// for preauthentication purposes
internal static void BindModule(Uri uri, Authorization response, IAuthenticationModule module)
{
Instance.BindModule(uri, response, module);
}
/// <devdoc> /// <para> /// Binds an authentication response to a request for pre-authentication. /// </para> /// </devdoc> // Create binding between an authorization response and the module // generating that response // This association is used for deciding which module to invoke // for preauthentication purposes public abstract void BindModule(Uri uri, Authorization response, IAuthenticationModule module);
bool CreateTunnel(HttpWebRequest request, Stream stream, out byte [] buffer)
{
StringBuilder sb = new StringBuilder();
sb.Append("CONNECT ");
sb.Append(request.Address.Host);
sb.Append(':');
sb.Append(request.Address.Port);
sb.Append(" HTTP/");
if (request.ServicePoint.ProtocolVersion == HttpVersion.Version11)
{
sb.Append("1.1");
}
else
{
sb.Append("1.0");
}
sb.Append("\r\nHost: ");
sb.Append(request.Address.Authority);
string challenge = Data.Challenge;
Data.Challenge = null;
bool have_auth = (request.Headers ["Proxy-Authorization"] != null);
if (have_auth)
{
sb.Append("\r\nProxy-Authorization: ");
sb.Append(request.Headers ["Proxy-Authorization"]);
}
else if (challenge != null && Data.StatusCode == 407)
{
have_auth = true;
ICredentials creds = request.Proxy.Credentials;
Authorization auth = AuthenticationManager.Authenticate(challenge, request, creds);
if (auth != null)
{
sb.Append("\r\nProxy-Authorization: ");
sb.Append(auth.Message);
}
}
sb.Append("\r\n\r\n");
Data.StatusCode = 0;
byte [] connectBytes = Encoding.Default.GetBytes(sb.ToString());
stream.Write(connectBytes, 0, connectBytes.Length);
int status;
WebHeaderCollection result = ReadHeaders(request, stream, out buffer, out status);
if (!have_auth && result != null && status == 407) // Needs proxy auth
{
Data.StatusCode = status;
Data.Challenge = result ["Proxy-Authenticate"];
return(false);
}
else if (status != 200)
{
string msg = String.Format("The remote server returned a {0} status code.", status);
HandleError(WebExceptionStatus.SecureChannelFailure, null, msg);
return(false);
}
return(result != null);
}
private Authorization DoAuthenticate(string challenge, WebRequest webRequest, ICredentials credentials, bool preAuthenticate)
{
HttpDigestChallenge challenge2;
if (credentials == null)
{
return(null);
}
HttpWebRequest httpWebRequest = webRequest as HttpWebRequest;
NetworkCredential credential = credentials.GetCredential(httpWebRequest.ChallengedUri, Signature);
if (credential is SystemNetworkCredential)
{
if (WDigestAvailable)
{
return(this.XPDoAuthenticate(challenge, httpWebRequest, credentials, preAuthenticate));
}
return(null);
}
if (!preAuthenticate)
{
int startingPoint = AuthenticationManager.FindSubstringNotInQuotes(challenge, Signature);
if (startingPoint < 0)
{
return(null);
}
challenge2 = HttpDigest.Interpret(challenge, startingPoint, httpWebRequest);
}
else
{
challenge2 = challengeCache.Lookup(httpWebRequest.ChallengedUri.AbsoluteUri) as HttpDigestChallenge;
}
if (challenge2 == null)
{
return(null);
}
if (!CheckQOP(challenge2))
{
if (Logging.On)
{
Logging.PrintError(Logging.Web, SR.GetString("net_log_digest_qop_not_supported", new object[] { challenge2.QualityOfProtection }));
}
return(null);
}
if (preAuthenticate)
{
challenge2 = challenge2.CopyAndIncrementNonce();
challenge2.SetFromRequest(httpWebRequest);
}
if (credential == null)
{
return(null);
}
ICredentialPolicy credentialPolicy = AuthenticationManager.CredentialPolicy;
if ((credentialPolicy != null) && !credentialPolicy.ShouldSendCredential(httpWebRequest.ChallengedUri, httpWebRequest, credential, this))
{
return(null);
}
string computeSpn = httpWebRequest.CurrentAuthenticationState.GetComputeSpn(httpWebRequest);
ChannelBinding channelBinding = null;
if (httpWebRequest.CurrentAuthenticationState.TransportContext != null)
{
channelBinding = httpWebRequest.CurrentAuthenticationState.TransportContext.GetChannelBinding(ChannelBindingKind.Endpoint);
}
Authorization authorization = HttpDigest.Authenticate(challenge2, credential, computeSpn, channelBinding);
if ((!preAuthenticate && webRequest.PreAuthenticate) && (authorization != null))
{
string[] strArray = (challenge2.Domain == null) ? new string[] { httpWebRequest.ChallengedUri.GetParts(UriComponents.SchemeAndServer, UriFormat.UriEscaped) } : challenge2.Domain.Split(singleSpaceArray);
authorization.ProtectionRealm = (challenge2.Domain == null) ? null : strArray;
for (int i = 0; i < strArray.Length; i++)
{
challengeCache.Add(strArray[i], challenge2);
}
}
return(authorization);
}
/// <summary>
/// Authenticate the web request.
/// </summary>
/// <param name="request">Current web request.</param>
/// <param name="credentials">OAuthCredentials object.</param>
/// <returns>Populated Authorization object.</returns>
static Authorization Auth(WebRequest request, ICredentials credentials)
{
OAuthCredentialsStandard cred = credentials as OAuthCredentialsStandard;
if (cred != null)
{
NameValueCollection postArgs = new NameValueCollection();
string realm = OAuthUtility.Realm(request.RequestUri);
string authstr = "OAuth realm=\"" + realm + "\", " + OAuthClient.GetAuthParameters(request.RequestUri, cred.Token, cred.Arguments, cred.Consumer.ConsumerKey, cred.Consumer.ConsumerSecret, cred.RsaCertificate, AuthenticationMethod.Header, request.Method, cred.Consumer.SignatureType);
Trace.WriteLine(authstr, "Credentials");
Authorization auth = new Authorization(authstr);
return auth;
}
OAuthCredentialsTwoLegged tcred = credentials as OAuthCredentialsTwoLegged;
if (tcred != null)
{
string realm = OAuthUtility.Realm(request.RequestUri);
string authstr = "OAuth realm=\"" + realm + "\", " + OAuthClient.GetAuthParameters(request.RequestUri, tcred.RequestorId, tcred.Arguments, tcred.Consumer.ConsumerKey, tcred.Consumer.ConsumerSecret, tcred.RsaCertificate, AuthenticationMethod.Header, request.Method, tcred.Consumer.SignatureType);
Trace.WriteLine(authstr, "Credentials");
Authorization auth = new Authorization(authstr);
return auth;
}
return null;
}
public static Authorization Authenticate(string challenge, WebRequest webRequest, ICredentials credentials)
{
GlobalLog.Print("XPDigestClient::Authenticate(): " + challenge);
GlobalLog.Assert(credentials != null, "XPDigestClient::Authenticate() credentials==null", "");
if (credentials == null)
{
return(null);
}
HttpWebRequest httpWebRequest = webRequest as HttpWebRequest;
GlobalLog.Assert(httpWebRequest != null, "XPDigestClient::Authenticate() httpWebRequest==null", "");
if (httpWebRequest == null || httpWebRequest.ChallengedUri == null)
{
//
// there has been no challenge:
// 1) the request never went on the wire
// 2) somebody other than us is calling into AuthenticationManager
//
return(null);
}
int index = AuthenticationManager.FindSubstringNotInQuotes(challenge.ToLower(CultureInfo.InvariantCulture), DigestClient.Signature);
if (index < 0)
{
return(null);
}
int blobBegin = index + DigestClient.SignatureSize;
string incoming = null;
//
// there may be multiple challenges. If the next character after the
// package name is not a comma then it is challenge data
//
if (challenge.Length > blobBegin && challenge[blobBegin] != ',')
{
++blobBegin;
}
else
{
index = -1;
}
if (index >= 0 && challenge.Length > blobBegin)
{
incoming = challenge.Substring(blobBegin);
}
NTAuthentication authSession = sessions[httpWebRequest.CurrentAuthenticationState] as NTAuthentication;
GlobalLog.Print("XPDigestClient::Authenticate() key:" + ValidationHelper.HashString(httpWebRequest.CurrentAuthenticationState) + " retrieved authSession:" + ValidationHelper.HashString(authSession));
if (authSession == null)
{
NetworkCredential NC = credentials.GetCredential(httpWebRequest.ChallengedUri, DigestClient.Signature);
GlobalLog.Print("XPDigestClient::Authenticate() GetCredential() returns:" + ValidationHelper.ToString(NC));
if (NC == null)
{
return(null);
}
string username = NC.UserName;
if (username == null || (username.Length == 0 && !(NC is SystemNetworkCredential)))
{
return(null);
}
authSession =
new NTAuthentication(
"WDigest",
NC,
httpWebRequest.ChallengedUri.AbsolutePath,
httpWebRequest.DelegationFix);
GlobalLog.Print("XPDigestClient::Authenticate() adding authSession:" + ValidationHelper.HashString(authSession) + " for:" + ValidationHelper.HashString(httpWebRequest.CurrentAuthenticationState));
sessions.Add(httpWebRequest.CurrentAuthenticationState, authSession);
}
bool handshakeComplete;
string clientResponse = authSession.GetOutgoingDigestBlob(incoming, httpWebRequest.CurrentMethod, out handshakeComplete);
GlobalLog.Print("XPDigestClient::Authenticate() GetOutgoingDigestBlob(" + incoming + ") returns:" + ValidationHelper.ToString(clientResponse));
GlobalLog.Assert(handshakeComplete, "XPDigestClient::Authenticate() handshakeComplete==false", "");
if (!handshakeComplete)
{
return(null);
}
// completion is decided in Update()
Authorization finalAuthorization = new Authorization(DigestClient.AuthType + " " + clientResponse, false);
return(finalAuthorization);
}
//
// CONSIDER V.NEXT
// creating a static hashtable for server nonces and keep track of nonce count
//
public static Authorization Authenticate(HttpDigestChallenge digestChallenge, ICredentials credentials)
{
NetworkCredential NC = credentials.GetCredential(digestChallenge.ChallengedUri, DigestClient.Signature);
GlobalLog.Print("HttpDigest::Authenticate() GetCredential() returns:" + ValidationHelper.ToString(NC));
if (NC == null)
{
return(null);
}
string username = NC.UserName;
if (ValidationHelper.IsBlankString(username))
{
return(null);
}
string password = NC.Password;
if (digestChallenge.QopPresent)
{
if (digestChallenge.ClientNonce == null || digestChallenge.Stale)
{
GlobalLog.Print("HttpDigest::Authenticate() QopPresent:True, need new nonce. digestChallenge.ClientNonce:" + ValidationHelper.ToString(digestChallenge.ClientNonce) + " digestChallenge.Stale:" + digestChallenge.Stale.ToString());
digestChallenge.ClientNonce = createNonce(32);
digestChallenge.NonceCount = 1;
}
else
{
GlobalLog.Print("HttpDigest::Authenticate() QopPresent:True, reusing nonce. digestChallenge.NonceCount:" + digestChallenge.NonceCount.ToString());
digestChallenge.NonceCount++;
}
}
StringBuilder authorization = new StringBuilder();
//
// look at username & password, if it's not ASCII we need to attempt some
// kind of encoding because we need to calculate the hash on byte[]
//
Charset usernameCharset = DetectCharset(username);
if (!digestChallenge.UTF8Charset && usernameCharset == Charset.UTF8)
{
GlobalLog.Print("HttpDigest::Authenticate() can't authenticate with UNICODE username. failing auth.");
return(null);
}
Charset passwordCharset = DetectCharset(password);
if (!digestChallenge.UTF8Charset && passwordCharset == Charset.UTF8)
{
GlobalLog.Print("HttpDigest::Authenticate() can't authenticate with UNICODE password. failing auth.");
return(null);
}
if (digestChallenge.UTF8Charset)
{
// on the wire always use UTF8 when the server supports it
authorization.Append(pair(DA_charset, "utf-8", false));
authorization.Append(",");
if (usernameCharset == Charset.UTF8)
{
username = CharsetEncode(username, Charset.UTF8);
authorization.Append(pair(DA_username, username, true));
authorization.Append(",");
}
else
{
authorization.Append(pair(DA_username, CharsetEncode(username, Charset.UTF8), true));
authorization.Append(",");
username = CharsetEncode(username, usernameCharset);
}
}
else
{
// otherwise UTF8 is not required
username = CharsetEncode(username, usernameCharset);
authorization.Append(pair(DA_username, username, true));
authorization.Append(",");
}
password = CharsetEncode(password, passwordCharset);
// no special encoding for the realm since we're just going to echo it back (encoding must have happened on the server).
authorization.Append(pair(DA_realm, digestChallenge.Realm, true));
authorization.Append(",");
authorization.Append(pair(DA_nonce, digestChallenge.Nonce, true));
authorization.Append(",");
authorization.Append(pair(DA_uri, digestChallenge.Uri, true));
if (digestChallenge.QopPresent)
{
//
// RAID#47397
// send only the QualityOfProtection we're using
// since we support only "auth" that's what we will send out
//
if (digestChallenge.Algorithm != null)
{
//
// consider: should we default to "MD5" here? IE does
//
authorization.Append(",");
authorization.Append(pair(DA_algorithm, digestChallenge.Algorithm, true)); // IE sends quotes - IIS needs them
}
authorization.Append(",");
authorization.Append(pair(DA_cnonce, digestChallenge.ClientNonce, true));
authorization.Append(",");
authorization.Append(pair(DA_nc, digestChallenge.NonceCount.ToString("x8"), false));
authorization.Append(",");
authorization.Append(pair(DA_qop, SupportedQuality, true)); // IE sends quotes - IIS needs them
}
// warning: this must be computed here
string responseValue = HttpDigest.responseValue(digestChallenge, username, password);
if (responseValue == null)
{
return(null);
}
authorization.Append(",");
authorization.Append(pair(DA_response, responseValue, true)); // IE sends quotes - IIS needs them
if (digestChallenge.Opaque != null)
{
authorization.Append(",");
authorization.Append(pair(DA_opaque, digestChallenge.Opaque, true));
}
GlobalLog.Print("HttpDigest::Authenticate() digestChallenge.Stale:" + digestChallenge.Stale.ToString());
// completion is decided in Update()
Authorization finalAuthorization = new Authorization(DigestClient.AuthType + " " + authorization.ToString(), false);
return(finalAuthorization);
}
/// <devdoc>
/// <para>
/// Binds an authentication response to a request for pre-authentication.
/// </para>
/// </devdoc>
// Create binding between an authorization response and the module
// generating that response
// This association is used for deciding which module to invoke
// for preauthentication purposes
public override void BindModule(Uri uri, Authorization response, IAuthenticationModule module)
{
GlobalLog.Assert(
module.CanPreAuthenticate,
"AuthenticationManager::BindModule()|module.CanPreAuthenticate == false");
if (response.ProtectionRealm != null)
{
// The authentication module specified which Uri prefixes
// will be preauthenticated
string[] prefix = response.ProtectionRealm;
for (int k = 0; k < prefix.Length; k++)
{
//
// PrefixLookup is thread-safe
//
moduleBinding.Add(prefix[k], module.AuthenticationType.ToUpperInvariant());
}
}
else
{
// Otherwise use the default policy for "fabricating"
// some protection realm generalizing the particular Uri
string prefix = generalize(uri);
//
// PrefixLookup is thread-safe
//
moduleBinding.Add(prefix, module.AuthenticationType);
}
}
/// <include file='doc\AuthenticationManager.uex' path='docs/doc[@for="AuthenticationManager.BindModule"]/*' />
/// <devdoc>
/// <para>
/// Binds an authentication response to a request for pre-authentication.
/// </para>
/// </devdoc>
internal static void BindModule(WebRequest request, Authorization response) {
createModuleBinding(request, response, response.Module);
}
internal void ClearAuthReq(HttpWebRequest httpWebRequest) {
//
// if we are authenticating and we're being redirected to
// another authentication space then remove the current
// authentication header
//
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::ClearAuthReq() httpWebRequest#" + ValidationHelper.HashString(httpWebRequest) + " " + AuthorizationHeader.ToString() + ": " + ValidationHelper.ToString(httpWebRequest.Headers[AuthorizationHeader]));
TriedPreAuth = false;
Authorization = null;
UniqueGroupId = null;
httpWebRequest.Headers.Remove(AuthorizationHeader);
}
private Authorization XPDoAuthenticate(string challenge, HttpWebRequest httpWebRequest, ICredentials credentials, bool preAuthenticate)
{
NTAuthentication securityContext = null;
string incomingBlob = null;
SecurityStatus status;
if (!preAuthenticate)
{
int index = AuthenticationManager.FindSubstringNotInQuotes(challenge, Signature);
if (index < 0)
{
return(null);
}
securityContext = httpWebRequest.CurrentAuthenticationState.GetSecurityContext(this);
incomingBlob = RefineDigestChallenge(challenge, index);
}
else
{
HttpDigestChallenge challenge2 = challengeCache.Lookup(httpWebRequest.ChallengedUri.AbsoluteUri) as HttpDigestChallenge;
if (challenge2 == null)
{
return(null);
}
challenge2 = challenge2.CopyAndIncrementNonce();
challenge2.SetFromRequest(httpWebRequest);
incomingBlob = challenge2.ToBlob();
}
UriComponents uriParts = 0;
if (httpWebRequest.CurrentMethod.ConnectRequest)
{
uriParts = UriComponents.HostAndPort;
}
else if (httpWebRequest.UsesProxySemantics)
{
uriParts = UriComponents.HttpRequestUrl;
}
else
{
uriParts = UriComponents.PathAndQuery;
}
string parts = httpWebRequest.GetRemoteResourceUri().GetParts(uriParts, UriFormat.UriEscaped);
if (securityContext == null)
{
NetworkCredential credential = credentials.GetCredential(httpWebRequest.ChallengedUri, Signature);
if ((credential == null) || (!(credential is SystemNetworkCredential) && (credential.InternalGetUserName().Length == 0)))
{
return(null);
}
ICredentialPolicy credentialPolicy = AuthenticationManager.CredentialPolicy;
if ((credentialPolicy != null) && !credentialPolicy.ShouldSendCredential(httpWebRequest.ChallengedUri, httpWebRequest, credential, this))
{
return(null);
}
string computeSpn = httpWebRequest.CurrentAuthenticationState.GetComputeSpn(httpWebRequest);
ChannelBinding channelBinding = null;
if (httpWebRequest.CurrentAuthenticationState.TransportContext != null)
{
channelBinding = httpWebRequest.CurrentAuthenticationState.TransportContext.GetChannelBinding(ChannelBindingKind.Endpoint);
}
securityContext = new NTAuthentication("WDigest", credential, computeSpn, httpWebRequest, channelBinding);
httpWebRequest.CurrentAuthenticationState.SetSecurityContext(securityContext, this);
}
string str4 = securityContext.GetOutgoingDigestBlob(incomingBlob, httpWebRequest.CurrentMethod.Name, parts, null, false, false, out status);
if (str4 == null)
{
return(null);
}
Authorization authorization = new Authorization("Digest " + str4, securityContext.IsCompleted, string.Empty, securityContext.IsMutualAuthFlag);
if (!preAuthenticate && httpWebRequest.PreAuthenticate)
{
HttpDigestChallenge challenge3 = HttpDigest.Interpret(incomingBlob, -1, httpWebRequest);
string[] strArray = (challenge3.Domain == null) ? new string[] { httpWebRequest.ChallengedUri.GetParts(UriComponents.SchemeAndServer, UriFormat.UriEscaped) } : challenge3.Domain.Split(singleSpaceArray);
authorization.ProtectionRealm = (challenge3.Domain == null) ? null : strArray;
for (int i = 0; i < strArray.Length; i++)
{
challengeCache.Add(strArray[i], challenge3);
}
}
return(authorization);
}
//
// attempts to authenticate the request:
// returns true only if it succesfully called into the AuthenticationManager
// and got back a valid Authorization and succesfully set the appropriate auth headers
//
internal bool AttemptAuthenticate(HttpWebRequest httpWebRequest, ICredentials authInfo) {
//
// Check for previous authentication attempts or the presence of credentials
//
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() httpWebRequest#" + ValidationHelper.HashString(httpWebRequest) + " AuthorizationHeader:" + AuthorizationHeader.ToString());
if (Authorization!=null && Authorization.Complete) {
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() Authorization!=null Authorization.Complete:" + Authorization.Complete.ToString());
if (IsProxyAuth) {
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() ProxyAuth cleaning up auth status");
ClearAuthReq(httpWebRequest);
}
return false;
}
if (authInfo==null) {
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() authInfo==null Authorization#" + ValidationHelper.HashString(Authorization));
return false;
}
string challenge = httpWebRequest.AuthHeader(AuthenticateHeader);
if (challenge==null) {
//
// the server sent no challenge, but this might be the case
// in which we're succeeding an authorization handshake to
// a proxy while a handshake with the server is still in progress.
// if the handshake with the proxy is complete and we actually have
// a handshake with the server in progress we can send the authorization header for the server as well.
//
if (!IsProxyAuth && Authorization!=null && httpWebRequest.ProxyAuthenticationState.Authorization!=null) {
httpWebRequest.Headers.Set(AuthorizationHeader, Authorization.Message);
}
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() challenge==null Authorization#" + ValidationHelper.HashString(Authorization));
return false;
}
//
// if the AuthenticationManager throws on Authenticate,
// bubble up that Exception to the user
//
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() challenge:" + challenge);
PrepareState(httpWebRequest);
try {
Authorization = AuthenticationManager.Authenticate(challenge, httpWebRequest, authInfo);
}
catch (Exception exception) {
Authorization = null;
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::PreAuthIfNeeded() PreAuthenticate() returned exception:" + exception.Message);
ClearSession(httpWebRequest);
throw;
}
catch {
Authorization = null;
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::PreAuthIfNeeded() PreAuthenticate() returned exception: Non-CLS Compliant Exception");
ClearSession(httpWebRequest);
throw;
}
if (Authorization==null) {
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() Authorization==null");
return false;
}
if (Authorization.Message==null) {
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() Authorization.Message==null");
Authorization = null;
return false;
}
UniqueGroupId = Authorization.ConnectionGroupId;
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() AuthorizationHeader:" + AuthorizationHeader + " blob: " + Authorization.Message.Length + "bytes Complete:" + Authorization.Complete.ToString());
try {
//
// a "bad" module could try sending bad characters in the HTTP headers.
// catch the exception from WebHeaderCollection.CheckBadChars()
// fail the auth process
// and return the exception to the user as InnerException
//
httpWebRequest.Headers.Set(AuthorizationHeader, Authorization.Message);
}
catch {
Authorization = null;
ClearSession(httpWebRequest);
throw;
}
return true;
}
//
// attempts to authenticate the request:
// returns true only if it succesfully called into the AuthenticationManager
// and got back a valid Authorization and succesfully set the appropriate auth headers
//
internal bool AttemptAuthenticate(HttpWebRequest httpWebRequest, ICredentials authInfo) {
//
// Check for previous authentication attempts or the presence of credentials
//
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() httpWebRequest#" + ValidationHelper.HashString(httpWebRequest) + " AuthorizationHeader:" + AuthorizationHeader.ToString());
if (Authorization!=null && Authorization.Complete) {
//
// here the design gets "dirty".
// if this is proxy auth, we might have been challenged by an external
// server as well. in this case we will have to clear our previous proxy
// auth state before we go any further. this will be broken if the handshake
// requires more than one dropped connection (which NTLM is a border case for,
// since it droppes the connection on the 1st challenge but not on the second)
//
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() Authorization!=null Authorization.Complete:" + Authorization.Complete.ToString());
if (IsProxyAuth) {
//
// so, we got passed a 407 but now we got a 401, the proxy probably
// dropped the connection on us so we need to reset our proxy handshake
// Consider: this should have been taken care by Update()
//
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() ProxyAuth cleaning up auth status");
ClearAuthReq(httpWebRequest);
}
return false;
}
if (authInfo==null) {
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() authInfo==null Authorization#" + ValidationHelper.HashString(Authorization));
return false;
}
string challenge = httpWebRequest.AuthHeader(AuthenticateHeader);
if (challenge==null) {
//
// the server sent no challenge, but this might be the case
// in which we're succeeding an authorization handshake to
// a proxy while a handshake with the server is still in progress.
// if the handshake with the proxy is complete and we actually have
// a handshake with the server in progress we can send the authorization header for the server as well.
//
if (!IsProxyAuth && Authorization!=null && httpWebRequest.ProxyAuthenticationState.Authorization!=null) {
httpWebRequest.Headers.Set(AuthorizationHeader, Authorization.Message);
}
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() challenge==null Authorization#" + ValidationHelper.HashString(Authorization));
return false;
}
//
// if the AuthenticationManager throws on Authenticate,
// bubble up that Exception to the user
//
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() challenge:" + challenge);
PrepareState(httpWebRequest);
try {
Authorization = AuthenticationManager.Authenticate(challenge, httpWebRequest, authInfo);
}
catch (Exception exception) {
Authorization = null;
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::PreAuthIfNeeded() PreAuthenticate() returned exception:" + exception.Message);
ClearSession(httpWebRequest);
throw;
}
if (Authorization==null) {
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() Authorization==null");
return false;
}
if (Authorization.Message==null) {
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() Authorization.Message==null");
Authorization = null;
return false;
}
UniqueGroupId = Authorization.ConnectionGroupId;
GlobalLog.Print("AuthenticationState#" + ValidationHelper.HashString(this) + "::AttemptAuthenticate() AuthorizationHeader:" + AuthorizationHeader + " blob: " + Authorization.Message.Length + "bytes Complete:" + Authorization.Complete.ToString());
try {
//
// a "bad" module could try sending bad characters in the HTTP headers.
// catch the exception from WebHeaderCollection.CheckBadChars()
// fail the auth process
// and return the exception to the user as InnerException
//
httpWebRequest.Headers.Set(AuthorizationHeader, Authorization.Message);
}
catch {
Authorization = null;
ClearSession(httpWebRequest);
throw;
}
return true;
}
/// <devdoc>
/// <para>Call each registered authentication module to determine the first module that
/// can respond to the authentication request.</para>
/// </devdoc>
public static Authorization Authenticate(string challenge, WebRequest request, ICredentials credentials)
{
//
// parameter validation
//
if (request == null)
{
throw new ArgumentNullException("request");
}
if (credentials == null)
{
throw new ArgumentNullException("credentials");
}
if (challenge == null)
{
throw new ArgumentNullException("challenge");
}
GlobalLog.Print("AuthenticationManager::Authenticate() challenge:[" + challenge + "]");
Authorization response = null;
HttpWebRequest httpWebRequest = request as HttpWebRequest;
if (httpWebRequest != null && httpWebRequest.CurrentAuthenticationState.Module != null)
{
response = httpWebRequest.CurrentAuthenticationState.Module.Authenticate(challenge, request, credentials);
}
else
{
// This is the case where we would try to find the module on the first server challenge
lock (s_ModuleBinding) {
//
// fastest way of iterating on the ArryList
//
for (int i = 0; i < ModuleList.Count; i++)
{
IAuthenticationModule authenticationModule = (IAuthenticationModule)ModuleList[i];
//
// the AuthenticationModule will
// 1) return a valid string on success
// 2) return null if it knows it cannot respond
// 3) throw if it could have responded but unexpectedly failed to do so
//
if (httpWebRequest != null)
{
httpWebRequest.CurrentAuthenticationState.Module = authenticationModule;
}
response = authenticationModule.Authenticate(challenge, request, credentials);
if (response != null)
{
//
// found the Authentication Module, return it
//
GlobalLog.Print("AuthenticationManager::Authenticate() found IAuthenticationModule:[" + authenticationModule.AuthenticationType + "]");
break;
}
}
}
}
return(response);
}
/// <devdoc>
/// <para>
/// Binds an authentication response to a request for pre-authentication.
/// </para>
/// </devdoc>
// Create binding between an authorization response and the module
// generating that response
// This association is used for deciding which module to invoke
// for preauthentication purposes
internal static void BindModule(Uri uri, Authorization response, IAuthenticationModule module)
{
Instance.BindModule(uri, response, module);
}
/// <include file='doc\AuthenticationManager.uex' path='docs/doc[@for="AuthenticationManager.BindModule"]/*' />
/// <devdoc>
/// <para>
/// Binds an authentication response to a request for pre-authentication.
/// </para>
/// </devdoc>
internal static void BindModule(WebRequest request, Authorization response)
{
createModuleBinding(request, response, response.Module);
}