| public static AcquireCredentialsHandle ( System.Net.Security.SSPIInterface secModule, string package, System.Net.Interop intent, System.Net.Interop &authdata ) : SafeFreeCredentials | ||
| secModule | System.Net.Security.SSPIInterface | |
| package | string | |
| intent | System.Net.Interop | |
| authdata | System.Net.Interop | |
| return | SafeFreeCredentials | |
//
// Security: we temporarily reset thread token to open the handle under process account.
//
private static SafeFreeCredentials AcquireCredentialsHandle(Interop.Secur32.CredentialUse credUsage, Interop.Secur32.SecureCredential secureCredential)
{
// First try without impersonation, if it fails, then try the process account.
// I.E. We don't know which account the certificate context was created under.
try
{
//
// For app-compat we want to ensure the credential are accessed under >>process<< acount.
//
return(WindowsIdentity.RunImpersonated <SafeFreeCredentials>(SafeAccessTokenHandle.InvalidHandle, () => {
return SSPIWrapper.AcquireCredentialsHandle(GlobalSSPI.SSPISecureChannel, SecurityPackage, credUsage, secureCredential);
}));
}
catch
{
return(SSPIWrapper.AcquireCredentialsHandle(GlobalSSPI.SSPISecureChannel, SecurityPackage, credUsage, secureCredential));
}
}
private void Initialize(bool isServer, string package, NetworkCredential credential, string spn, ContextFlags requestedContextFlags, System.Security.Authentication.ExtendedProtection.ChannelBinding channelBinding)
{
this.m_TokenSize = SSPIWrapper.GetVerifyPackageInfo(GlobalSSPI.SSPIAuth, package, true).MaxToken;
this.m_IsServer = isServer;
this.m_Spn = spn;
this.m_SecurityContext = null;
this.m_RequestedContextFlags = requestedContextFlags;
this.m_Package = package;
this.m_ChannelBinding = channelBinding;
if (credential is SystemNetworkCredential)
{
this.m_CredentialsHandle = SSPIWrapper.AcquireDefaultCredential(GlobalSSPI.SSPIAuth, package, this.m_IsServer ? CredentialUse.Inbound : CredentialUse.Outbound);
this.m_UniqueUserId = "/S";
}
else
{
string userName = credential.InternalGetUserName();
string domain = credential.InternalGetDomain();
AuthIdentity authdata = new AuthIdentity(userName, credential.InternalGetPassword(), ((package == "WDigest") && ((domain == null) || (domain.Length == 0))) ? null : domain);
this.m_UniqueUserId = domain + "/" + userName + "/U";
this.m_CredentialsHandle = SSPIWrapper.AcquireCredentialsHandle(GlobalSSPI.SSPIAuth, package, this.m_IsServer ? CredentialUse.Inbound : CredentialUse.Outbound, ref authdata);
}
}
private void Initialize(bool isServer, string package, NetworkCredential credential, string spn, Interop.SspiCli.ContextFlags requestedContextFlags, ChannelBinding channelBinding)
{
GlobalLog.Print("NTAuthentication#" + LoggingHash.HashString(this) + "::.ctor() package:" + LoggingHash.ObjectToString(package) + " spn:" + LoggingHash.ObjectToString(spn) + " flags :" + requestedContextFlags.ToString());
_tokenSize = SSPIWrapper.GetVerifyPackageInfo(GlobalSSPI.SSPIAuth, package, true).MaxToken;
_isServer = isServer;
_spn = spn;
_securityContext = null;
_requestedContextFlags = requestedContextFlags;
_package = package;
_channelBinding = channelBinding;
GlobalLog.Print("Peer SPN-> '" + _spn + "'");
//
// Check if we're using DefaultCredentials.
//
Debug.Assert(CredentialCache.DefaultCredentials == CredentialCache.DefaultNetworkCredentials);
if (credential == CredentialCache.DefaultCredentials)
{
GlobalLog.Print("NTAuthentication#" + LoggingHash.HashString(this) + "::.ctor(): using DefaultCredentials");
_credentialsHandle = SSPIWrapper.AcquireDefaultCredential(
GlobalSSPI.SSPIAuth,
package,
(_isServer ? Interop.SspiCli.CredentialUse.Inbound : Interop.SspiCli.CredentialUse.Outbound));
}
else
{
unsafe
{
SafeSspiAuthDataHandle authData = null;
try
{
Interop.SecurityStatus result = Interop.SspiCli.SspiEncodeStringsAsAuthIdentity(
credential.UserName, credential.Domain,
credential.Password, out authData);
if (result != Interop.SecurityStatus.OK)
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.PrintError(
NetEventSource.ComponentType.Security,
SR.Format(
SR.net_log_operation_failed_with_error,
"SspiEncodeStringsAsAuthIdentity()",
String.Format(CultureInfo.CurrentCulture, "0x{0:X}", (int)result)));
}
throw new Win32Exception((int)result);
}
_credentialsHandle = SSPIWrapper.AcquireCredentialsHandle(GlobalSSPI.SSPIAuth,
package, (_isServer ? Interop.SspiCli.CredentialUse.Inbound : Interop.SspiCli.CredentialUse.Outbound), ref authData);
}
finally
{
if (authData != null)
{
authData.Dispose();
}
}
}
}
}
//
// NTAuthentication::NTAuthentication()
// Created: 12-01-1999: L.M.
// Parameters:
// package - security package to use (kerberos/ntlm/negotiate)
// networkCredential - credentials we're using for authentication
// remotePeerId - for a server session:
// ignored (except when delegating, in which case this has the same rules as the client session.)
// for a client session:
// for kerberos: specifies the expected account under which the server
// is supposed to be running (KDC). If the server runs under a
// different account an exception is thrown during the blob
// exchange. (this allows mutual authentication.)
// One can specify a fully qualified account name (domain\userName)
// or just a username, in which case the domain is assumed
// to be the same as the client.
// for ntlm: ignored
//
// Description: Initializes SSPI
//
public NTAuthentication(string package, NetworkCredential networkCredential, string remotePeerId, DelegationFix delegationFix)
{
GlobalLog.Print("NTAuthentication::.ctor() package:" + package);
#if SERVER_SIDE_SSPI
m_SecureSessionType = SecureSessionType.ClientSession;
#endif
m_RemotePeerId = remotePeerId; // only needed for Kerberos, it's the KDC
m_Endianness = Endianness.Network;
m_SecurityContext = new SecurityContext(GlobalSSPI.SSPIAuth);
bool found = false;
GlobalLog.Print("NTAuthentication::.ctor() searching for name: " + package);
if (m_SupportedSecurityPackages != null)
{
for (int i = 0; i < m_SupportedSecurityPackages.Length; i++)
{
GlobalLog.Print("NTAuthentication::.ctor() supported name: " + m_SupportedSecurityPackages[i].Name);
if (string.Compare(m_SupportedSecurityPackages[i].Name, package, true, CultureInfo.InvariantCulture) == 0)
{
GlobalLog.Print("NTAuthentication::.ctor(): found SecurityPackage(" + package + ")");
m_TokenSize = m_SupportedSecurityPackages[i].MaxToken;
m_Capabilities = m_SupportedSecurityPackages[i].Capabilities;
found = true;
break;
}
}
}
if (!found)
{
GlobalLog.Print("NTAuthentication::.ctor(): initialization failed: SecurityPackage(" + package + ") NOT FOUND");
throw new WebException(SR.GetString(SR.net_securitypackagesupport), WebExceptionStatus.SecureChannelFailure);
}
//
// In order to prevent a race condition where one request could
// steal a connection from another request, before a handshake is
// complete, we create a new Group for each authentication request.
//
if (package == NtlmClient.AuthType || package == NegotiateClient.AuthType)
{
m_UniqueUserId = (Interlocked.Increment(ref s_UniqueGroupId)).ToString();
}
//
// check if we're using DefaultCredentials
//
if (networkCredential is SystemNetworkCredential)
{
//
// we're using DefaultCredentials
//
GlobalLog.Print("NTAuthentication::.ctor(): using DefaultCredentials");
m_UniqueUserId += "/S"; // save off for unique connection marking
// DELEGATION:
// The fix is implemented in cooperation with HttpWebRequest class
// Remove from both places and change the constructor of NTAuthentication class
// once the Common Language Runtime will start propagating the Thread token with their stack
// compression stuff.
//
GlobalLog.Assert(delegationFix != null, "DelegationFix ==NULL -> request Credentials has been changed after the request submission!", "");
if (delegationFix != null)
{
delegationFix.SetToken();
}
GlobalLog.Print("DELEGATION for peer-> '" + m_RemotePeerId + "', SetToken = " + delegationFix.Token.ToString());
try {
m_CredentialsHandle =
SSPIWrapper.AcquireCredentialsHandle(
GlobalSSPI.SSPIAuth,
package,
CredentialUse.Outgoing);
}
finally {
if (delegationFix != null)
{
delegationFix.RevertToken();
}
GlobalLog.Print("DELEGATION for peer-> '" + m_RemotePeerId + "', UNSetToken = " + delegationFix.Token.ToString());
}
return;
}
//
// we're not using DefaultCredentials, we need a
// AuthIdentity struct to contain credentials
// SECREVIEW:
// we'll save username/domain in temp strings, to avoid decrypting multiple times.
// password is only used once
//
string username = networkCredential.UserName;
string domain = networkCredential.Domain;
m_UniqueUserId += domain + "/" + username + "/U"; // save off for unique connection marking
AuthIdentity authIdentity = new AuthIdentity(username, networkCredential.Password, domain);
GlobalLog.Print("NTAuthentication::.ctor(): using authIdentity:" + authIdentity.ToString());
m_CredentialsHandle = SSPIWrapper.AcquireCredentialsHandle(
GlobalSSPI.SSPIAuth,
package,
CredentialUse.Outgoing,
authIdentity
);
}