Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / Net / System / Net / _NativeSSPI.cs / 1 / _NativeSSPI.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Net { using System.Net.Sockets; using System.Runtime.InteropServices; using System.Runtime.CompilerServices; using System.Runtime.ConstrainedExecution; using System.Globalization; // need a global so we can pass the interfaces as variables, // is there a better way? internal static class GlobalSSPI { internal static SSPIInterface SSPIAuth = new SSPIAuthType(); internal static SSPIInterface SSPISecureChannel = new SSPISecureChannelType(); } // used to define the interface for security to use. internal interface SSPIInterface { SecurityPackageInfoClass[] SecurityPackages { get; set; } int EnumerateSecurityPackages(out int pkgnum, out SafeFreeContextBuffer pkgArray); int AcquireCredentialsHandle(string moduleName, CredentialUse usage, ref AuthIdentity authdata, out SafeFreeCredentials outCredential); int AcquireDefaultCredential(string moduleName, CredentialUse usage, out SafeFreeCredentials outCredential); int AcquireCredentialsHandle(string moduleName, CredentialUse usage, ref SecureCredential authdata, out SafeFreeCredentials outCredential); int AcceptSecurityContext(ref SafeFreeCredentials credential, ref SafeDeleteContext context, SecurityBuffer inputBuffer, ContextFlags inFlags, Endianness endianness, SecurityBuffer outputBuffer, ref ContextFlags outFlags); int AcceptSecurityContext(SafeFreeCredentials credential, ref SafeDeleteContext context, SecurityBuffer[] inputBuffers, ContextFlags inFlags, Endianness endianness, SecurityBuffer outputBuffer, ref ContextFlags outFlags); int InitializeSecurityContext(ref SafeFreeCredentials credential, ref SafeDeleteContext context, string targetName, ContextFlags inFlags, Endianness endianness, SecurityBuffer inputBuffer, SecurityBuffer outputBuffer, ref ContextFlags outFlags); int InitializeSecurityContext(SafeFreeCredentials credential, ref SafeDeleteContext context, string targetName, ContextFlags inFlags, Endianness endianness, SecurityBuffer[] inputBuffers, SecurityBuffer outputBuffer, ref ContextFlags outFlags); int EncryptMessage(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber); int DecryptMessage(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber); int MakeSignature(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber); int VerifySignature(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber); int QueryContextAttributes(SafeDeleteContext phContext, ContextAttribute attribute, byte[] buffer, Type handleType, out SafeHandle refHandle); int QuerySecurityContextToken(SafeDeleteContext phContext, out SafeCloseHandle phToken); int CompleteAuthToken(ref SafeDeleteContext refContext, SecurityBuffer[] inputBuffers); } // For SSL connections: // on Win9x use schannel.dll, on NT we don't care, since its the same DLL internal class SSPISecureChannelType : SSPIInterface { private static readonly SecurDll Library = ComNetOS.IsWin9x ? SecurDll.SCHANNEL : SecurDll.SECURITY; private static SecurityPackageInfoClass[] m_SecurityPackages; public SecurityPackageInfoClass[] SecurityPackages { get { return m_SecurityPackages; } set { m_SecurityPackages = value; } } public int EnumerateSecurityPackages(out int pkgnum, out SafeFreeContextBuffer pkgArray) { GlobalLog.Print("SSPISecureChannelType::EnumerateSecurityPackages()"); return SafeFreeContextBuffer.EnumeratePackages(Library, out pkgnum, out pkgArray); } public int AcquireCredentialsHandle(string moduleName, CredentialUse usage, ref AuthIdentity authdata, out SafeFreeCredentials outCredential) { return SafeFreeCredentials.AcquireCredentialsHandle(Library, moduleName, usage, ref authdata, out outCredential); } public int AcquireDefaultCredential(string moduleName, CredentialUse usage, out SafeFreeCredentials outCredential) { return SafeFreeCredentials.AcquireDefaultCredential(Library, moduleName, usage, out outCredential); } public int AcquireCredentialsHandle(string moduleName, CredentialUse usage, ref SecureCredential authdata, out SafeFreeCredentials outCredential) { return SafeFreeCredentials.AcquireCredentialsHandle(Library, moduleName, usage, ref authdata, out outCredential); } public int AcceptSecurityContext(ref SafeFreeCredentials credential, ref SafeDeleteContext context, SecurityBuffer inputBuffer, ContextFlags inFlags, Endianness endianness, SecurityBuffer outputBuffer, ref ContextFlags outFlags) { return SafeDeleteContext.AcceptSecurityContext(Library, ref credential, ref context, inFlags, endianness, inputBuffer, null, outputBuffer, ref outFlags); } public int AcceptSecurityContext(SafeFreeCredentials credential, ref SafeDeleteContext context, SecurityBuffer[] inputBuffers, ContextFlags inFlags, Endianness endianness, SecurityBuffer outputBuffer, ref ContextFlags outFlags) { return SafeDeleteContext.AcceptSecurityContext(Library, ref credential, ref context, inFlags, endianness, null, inputBuffers, outputBuffer, ref outFlags); } public int InitializeSecurityContext(ref SafeFreeCredentials credential, ref SafeDeleteContext context, string targetName, ContextFlags inFlags, Endianness endianness, SecurityBuffer inputBuffer, SecurityBuffer outputBuffer, ref ContextFlags outFlags) { return SafeDeleteContext.InitializeSecurityContext(Library, ref credential, ref context, targetName, inFlags, endianness, inputBuffer, null, outputBuffer, ref outFlags); } public int InitializeSecurityContext(SafeFreeCredentials credential, ref SafeDeleteContext context, string targetName, ContextFlags inFlags, Endianness endianness, SecurityBuffer[] inputBuffers, SecurityBuffer outputBuffer, ref ContextFlags outFlags) { return SafeDeleteContext.InitializeSecurityContext(Library, ref credential, ref context, targetName, inFlags, endianness, null, inputBuffers, outputBuffer, ref outFlags); } private int EncryptMessageHelper9x(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber) { int status = (int)SecurityStatus.InvalidHandle; bool b = false; RuntimeHelpers.PrepareConstrainedRegions(); try { context.DangerousAddRef(ref b); } catch(Exception e) { if (b) { context.DangerousRelease(); b = false; } if (!(e is ObjectDisposedException)) throw; } catch { if (b) { context.DangerousRelease(); b = false; } throw; } finally { if (b) { status = UnsafeNclNativeMethods.NativeSSLWin9xSSPI.SealMessage(ref context._handle, 0, inputOutput, sequenceNumber); context.DangerousRelease(); } } return status; } private int EncryptMessageHelper(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber) { int status = (int)SecurityStatus.InvalidHandle; bool b = false; RuntimeHelpers.PrepareConstrainedRegions(); try { context.DangerousAddRef(ref b); } catch(Exception e) { if (b) { context.DangerousRelease(); b = false; } if (!(e is ObjectDisposedException)) throw; } catch { if (b) { context.DangerousRelease(); b = false; } throw; } finally { if (b) { status = UnsafeNclNativeMethods.NativeNTSSPI.EncryptMessage(ref context._handle, 0, inputOutput, sequenceNumber); context.DangerousRelease(); } } return status; } //get around the constrained region requirements public int EncryptMessage(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber) { if (ComNetOS.IsWin9x){ return EncryptMessageHelper9x(context,inputOutput,sequenceNumber); } else{ return EncryptMessageHelper(context,inputOutput,sequenceNumber); } } private int DecryptMessageHelper9x(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber) { int status = (int)SecurityStatus.InvalidHandle; bool b = false; RuntimeHelpers.PrepareConstrainedRegions(); try { context.DangerousAddRef(ref b); } catch(Exception e) { if (b) { context.DangerousRelease(); b = false; } if (!(e is ObjectDisposedException)) throw; } catch { if (b) { context.DangerousRelease(); b = false; } throw; } finally { if (b) { status = UnsafeNclNativeMethods.NativeSSLWin9xSSPI.UnsealMessage(ref context._handle, inputOutput, IntPtr.Zero, sequenceNumber); context.DangerousRelease(); } } return status; } private unsafe int DecryptMessageHelper(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber) { int status = (int)SecurityStatus.InvalidHandle; bool b = false; RuntimeHelpers.PrepareConstrainedRegions(); try { context.DangerousAddRef(ref b); } catch(Exception e) { if (b) { context.DangerousRelease(); b = false; } if (!(e is ObjectDisposedException)) throw; } catch { if (b) { context.DangerousRelease(); b = false; } throw; } finally { if (b) { status = UnsafeNclNativeMethods.NativeNTSSPI.DecryptMessage(ref context._handle, inputOutput, sequenceNumber, null); context.DangerousRelease(); } } return status; } public int DecryptMessage(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber) { if (ComNetOS.IsWin9x){ return DecryptMessageHelper9x(context,inputOutput,sequenceNumber); } else{ return DecryptMessageHelper(context,inputOutput,sequenceNumber); } } public int MakeSignature(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber) { throw ExceptionHelper.MethodNotSupportedException; } public int VerifySignature(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber) { throw ExceptionHelper.MethodNotSupportedException; } public unsafe int QueryContextAttributes(SafeDeleteContext phContext, ContextAttribute attribute, byte[] buffer, Type handleType, out SafeHandle refHandle) { refHandle = null; if (handleType != null) { if (handleType == typeof(SafeFreeContextBuffer)) { refHandle = SafeFreeContextBuffer.CreateEmptyHandle(Library); } else if (handleType == typeof(SafeFreeCertContext)) { refHandle = new SafeFreeCertContext(); } else { throw new ArgumentException(SR.GetString(SR.SSPIInvalidHandleType, handleType.FullName), "handleType"); } } fixed (byte* bufferPtr = buffer) { return SafeFreeContextBuffer.QueryContextAttributes(Library, phContext, attribute, bufferPtr, refHandle); } } public int QuerySecurityContextToken(SafeDeleteContext phContext, out SafeCloseHandle phToken) { throw new NotSupportedException(); } public int CompleteAuthToken(ref SafeDeleteContext refContext, SecurityBuffer[] inputBuffers) { throw new NotSupportedException(); } } // For Authentication (Kerberos, NTLM, Negotiate and WDigest): // on Win9x use schannel.dll, on NT we don't care, since its the same DLL internal class SSPIAuthType : SSPIInterface { private static readonly SecurDll Library = ComNetOS.IsWin9x ? SecurDll.SECUR32 : SecurDll.SECURITY; private static SecurityPackageInfoClass[] m_SecurityPackages; public SecurityPackageInfoClass[] SecurityPackages { get { return m_SecurityPackages; } set { m_SecurityPackages = value; } } public int EnumerateSecurityPackages(out int pkgnum, out SafeFreeContextBuffer pkgArray) { GlobalLog.Print("SSPIAuthType::EnumerateSecurityPackages()"); return SafeFreeContextBuffer.EnumeratePackages(Library, out pkgnum, out pkgArray); } public int AcquireCredentialsHandle(string moduleName, CredentialUse usage, ref AuthIdentity authdata, out SafeFreeCredentials outCredential) { return SafeFreeCredentials.AcquireCredentialsHandle(Library, moduleName, usage, ref authdata, out outCredential); } public int AcquireDefaultCredential(string moduleName, CredentialUse usage, out SafeFreeCredentials outCredential) { return SafeFreeCredentials.AcquireDefaultCredential(Library, moduleName, usage, out outCredential); } public int AcquireCredentialsHandle(string moduleName, CredentialUse usage, ref SecureCredential authdata, out SafeFreeCredentials outCredential) { return SafeFreeCredentials.AcquireCredentialsHandle(Library, moduleName, usage, ref authdata, out outCredential); } public int AcceptSecurityContext(ref SafeFreeCredentials credential, ref SafeDeleteContext context, SecurityBuffer inputBuffer, ContextFlags inFlags, Endianness endianness, SecurityBuffer outputBuffer, ref ContextFlags outFlags) { return SafeDeleteContext.AcceptSecurityContext(Library, ref credential, ref context, inFlags, endianness, inputBuffer, null, outputBuffer, ref outFlags); } public int AcceptSecurityContext(SafeFreeCredentials credential, ref SafeDeleteContext context, SecurityBuffer[] inputBuffers, ContextFlags inFlags, Endianness endianness, SecurityBuffer outputBuffer, ref ContextFlags outFlags) { return SafeDeleteContext.AcceptSecurityContext(Library, ref credential, ref context, inFlags, endianness, null, inputBuffers, outputBuffer, ref outFlags); } public int InitializeSecurityContext(ref SafeFreeCredentials credential, ref SafeDeleteContext context, string targetName, ContextFlags inFlags, Endianness endianness, SecurityBuffer inputBuffer, SecurityBuffer outputBuffer, ref ContextFlags outFlags) { return SafeDeleteContext.InitializeSecurityContext(Library, ref credential, ref context, targetName, inFlags, endianness, inputBuffer, null, outputBuffer, ref outFlags); } public int InitializeSecurityContext(SafeFreeCredentials credential, ref SafeDeleteContext context, string targetName, ContextFlags inFlags, Endianness endianness, SecurityBuffer[] inputBuffers, SecurityBuffer outputBuffer, ref ContextFlags outFlags) { return SafeDeleteContext.InitializeSecurityContext(Library, ref credential, ref context, targetName, inFlags, endianness, null, inputBuffers, outputBuffer, ref outFlags); } private int EncryptMessageHelper(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber) { int status = (int)SecurityStatus.InvalidHandle; bool b = false; RuntimeHelpers.PrepareConstrainedRegions(); try { context.DangerousAddRef(ref b); } catch(Exception e) { if (b) { context.DangerousRelease(); b = false; } if (!(e is ObjectDisposedException)) throw; } catch { if (b) { context.DangerousRelease(); b = false; } throw; } finally { if (b) { status = UnsafeNclNativeMethods.NativeNTSSPI.EncryptMessage(ref context._handle, 0, inputOutput, sequenceNumber); context.DangerousRelease(); } } return status; } public int EncryptMessage(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber) { if (ComNetOS.IsWin9x){ throw ExceptionHelper.MethodNotImplementedException; } else{ return EncryptMessageHelper(context,inputOutput,sequenceNumber); } } private unsafe int DecryptMessageHelper(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber) { int status = (int)SecurityStatus.InvalidHandle; bool b = false; uint qop = 0; RuntimeHelpers.PrepareConstrainedRegions(); try { context.DangerousAddRef(ref b); } catch(Exception e) { if (b) { context.DangerousRelease(); b = false; } if (!(e is ObjectDisposedException)) throw; } catch { if (b) { context.DangerousRelease(); b = false; } throw; } finally { if (b) { status = UnsafeNclNativeMethods.NativeNTSSPI.DecryptMessage(ref context._handle, inputOutput, sequenceNumber, &qop); context.DangerousRelease(); } } const uint SECQOP_WRAP_NO_ENCRYPT = 0x80000001; if (status == 0 && qop == SECQOP_WRAP_NO_ENCRYPT) { GlobalLog.Assert("NativeNTSSPI.DecryptMessage", "Expected qop = 0, returned value = " + qop.ToString("x", CultureInfo.InvariantCulture)); throw new InvalidOperationException(SR.GetString(SR.net_auth_message_not_encrypted)); } return status; } public int DecryptMessage(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber) { if (ComNetOS.IsWin9x){ throw ExceptionHelper.MethodNotImplementedException; } else{ return DecryptMessageHelper(context,inputOutput,sequenceNumber); } } private int MakeSignatureHelper(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber) { int status = (int)SecurityStatus.InvalidHandle; bool b = false; RuntimeHelpers.PrepareConstrainedRegions(); try { context.DangerousAddRef(ref b); } catch(Exception e) { if (b) { context.DangerousRelease(); b = false; } if (!(e is ObjectDisposedException)) throw; } catch { if (b) { context.DangerousRelease(); b = false; } throw; } finally { if (b) { const uint SECQOP_WRAP_NO_ENCRYPT = 0x80000001; status = UnsafeNclNativeMethods.NativeNTSSPI.EncryptMessage(ref context._handle, SECQOP_WRAP_NO_ENCRYPT, inputOutput, sequenceNumber); context.DangerousRelease(); } } return status; } public int MakeSignature(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber) { if (ComNetOS.IsWin9x){ throw ExceptionHelper.MethodNotImplementedException; } else{ return MakeSignatureHelper(context,inputOutput,sequenceNumber); } } private unsafe int VerifySignatureHelper(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber) { int status = (int)SecurityStatus.InvalidHandle; bool b = false; uint qop = 0; RuntimeHelpers.PrepareConstrainedRegions(); try { context.DangerousAddRef(ref b); } catch(Exception e) { if (b) { context.DangerousRelease(); b = false; } if (!(e is ObjectDisposedException)) throw; } catch { if (b) { context.DangerousRelease(); b = false; } throw; } finally { if (b) { status = UnsafeNclNativeMethods.NativeNTSSPI.DecryptMessage(ref context._handle, inputOutput, sequenceNumber, &qop); context.DangerousRelease(); } } return status; } public int VerifySignature(SafeDeleteContext context, SecurityBufferDescriptor inputOutput, uint sequenceNumber) { if (ComNetOS.IsWin9x){ throw ExceptionHelper.MethodNotImplementedException; } else{ return VerifySignatureHelper(context,inputOutput,sequenceNumber); } } public unsafe int QueryContextAttributes(SafeDeleteContext context, ContextAttribute attribute, byte[] buffer, Type handleType, out SafeHandle refHandle) { refHandle = null; if (handleType != null) { if (handleType == typeof(SafeFreeContextBuffer)) { refHandle = SafeFreeContextBuffer.CreateEmptyHandle(Library); } else if (handleType == typeof(SafeFreeCertContext)) { refHandle = new SafeFreeCertContext(); } else { throw new ArgumentException(SR.GetString(SR.SSPIInvalidHandleType, handleType.FullName), "handleType"); } } fixed (byte* bufferPtr = buffer) { return SafeFreeContextBuffer.QueryContextAttributes(Library, context, attribute, bufferPtr, refHandle); } } public int QuerySecurityContextToken(SafeDeleteContext phContext, out SafeCloseHandle phToken) { if (ComNetOS.IsWin9x) { throw new NotSupportedException(); } else { return SafeCloseHandle.GetSecurityContextToken(phContext, out phToken); } } public int CompleteAuthToken(ref SafeDeleteContext refContext, SecurityBuffer[] inputBuffers) { if (ComNetOS.IsWin9x) { throw new NotSupportedException(); } else { return SafeDeleteContext.CompleteAuthToken(Library, ref refContext, inputBuffers); } } } }
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