/** * WinPR: Windows Portable Runtime * Negotiate Security Package * * Copyright 2011-2014 Marc-Andre Moreau * Copyright 2017 Dorian Ducournau * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include "negotiate.h" #include "../sspi.h" #include "../log.h" #define TAG WINPR_TAG("negotiate") extern const SecurityFunctionTableA NTLM_SecurityFunctionTableA; extern const SecurityFunctionTableW NTLM_SecurityFunctionTableW; extern const SecurityFunctionTableA KERBEROS_SecurityFunctionTableA; extern const SecurityFunctionTableW KERBEROS_SecurityFunctionTableW; #ifdef WITH_GSSAPI static BOOL ErrorInitContextKerberos = FALSE; #else static BOOL ErrorInitContextKerberos = TRUE; #endif const SecPkgInfoA NEGOTIATE_SecPkgInfoA = { 0x00083BB3, /* fCapabilities */ 1, /* wVersion */ 0x0009, /* wRPCID */ 0x00002FE0, /* cbMaxToken */ "Negotiate", /* Name */ "Microsoft Package Negotiator" /* Comment */ }; static WCHAR NEGOTIATE_SecPkgInfoW_Name[] = { 'N', 'e', 'g', 'o', 't', 'i', 'a', 't', 'e', '\0' }; static WCHAR NEGOTIATE_SecPkgInfoW_Comment[] = { 'M', 'i', 'c', 'r', 'o', 's', 'o', 'f', 't', ' ', 'P', 'a', 'c', 'k', 'a', 'g', 'e', ' ', 'N', 'e', 'g', 'o', 't', 'i', 'a', 't', 'o', 'r', '\0' }; const SecPkgInfoW NEGOTIATE_SecPkgInfoW = { 0x00083BB3, /* fCapabilities */ 1, /* wVersion */ 0x0009, /* wRPCID */ 0x00002FE0, /* cbMaxToken */ NEGOTIATE_SecPkgInfoW_Name, /* Name */ NEGOTIATE_SecPkgInfoW_Comment /* Comment */ }; static void negotiate_SetSubPackage(NEGOTIATE_CONTEXT* context, const TCHAR* name) { if (_tcsnccmp(name, KERBEROS_SSP_NAME, ARRAYSIZE(KERBEROS_SSP_NAME)) == 0) { context->sspiA = (SecurityFunctionTableA*)&KERBEROS_SecurityFunctionTableA; context->sspiW = (SecurityFunctionTableW*)&KERBEROS_SecurityFunctionTableW; context->kerberos = TRUE; } else { context->sspiA = (SecurityFunctionTableA*)&NTLM_SecurityFunctionTableA; context->sspiW = (SecurityFunctionTableW*)&NTLM_SecurityFunctionTableW; context->kerberos = FALSE; } } static NEGOTIATE_CONTEXT* negotiate_ContextNew(void) { NEGOTIATE_CONTEXT* context; context = (NEGOTIATE_CONTEXT*)calloc(1, sizeof(NEGOTIATE_CONTEXT)); if (!context) return NULL; context->NegotiateFlags = 0; context->state = NEGOTIATE_STATE_INITIAL; SecInvalidateHandle(&(context->SubContext)); negotiate_SetSubPackage(context, KERBEROS_SSP_NAME); return context; } static void negotiate_ContextFree(NEGOTIATE_CONTEXT* context) { free(context); } static SECURITY_STATUS SEC_ENTRY negotiate_InitializeSecurityContextW( PCredHandle phCredential, PCtxtHandle phContext, SEC_WCHAR* pszTargetName, ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep, PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext, PSecBufferDesc pOutput, PULONG pfContextAttr, PTimeStamp ptsExpiry) { SECURITY_STATUS status; NEGOTIATE_CONTEXT* context; context = (NEGOTIATE_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext); if (!context) { context = negotiate_ContextNew(); if (!context) return SEC_E_INTERNAL_ERROR; sspi_SecureHandleSetLowerPointer(phNewContext, context); sspi_SecureHandleSetUpperPointer(phNewContext, (void*)NEGO_SSP_NAME); } /* if Kerberos has previously failed or WITH_GSSAPI is not defined, we use NTLM directly */ if (ErrorInitContextKerberos == FALSE) { if (!pInput) { negotiate_SetSubPackage(context, KERBEROS_SSP_NAME); } status = context->sspiW->InitializeSecurityContextW( phCredential, &(context->SubContext), pszTargetName, fContextReq, Reserved1, TargetDataRep, pInput, Reserved2, &(context->SubContext), pOutput, pfContextAttr, ptsExpiry); if (status == SEC_E_NO_CREDENTIALS) { WLog_WARN(TAG, "No Kerberos credentials. Retry with NTLM"); ErrorInitContextKerberos = TRUE; context->sspiA->DeleteSecurityContext(&(context->SubContext)); negotiate_ContextFree(context); return status; } } else { if (!pInput) { context->sspiA->DeleteSecurityContext(&(context->SubContext)); negotiate_SetSubPackage(context, NTLM_SSP_NAME); } status = context->sspiW->InitializeSecurityContextW( phCredential, &(context->SubContext), pszTargetName, fContextReq, Reserved1, TargetDataRep, pInput, Reserved2, &(context->SubContext), pOutput, pfContextAttr, ptsExpiry); } return status; } static SECURITY_STATUS SEC_ENTRY negotiate_InitializeSecurityContextA( PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR* pszTargetName, ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep, PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext, PSecBufferDesc pOutput, PULONG pfContextAttr, PTimeStamp ptsExpiry) { SECURITY_STATUS status; NEGOTIATE_CONTEXT* context; context = (NEGOTIATE_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext); if (!context) { context = negotiate_ContextNew(); if (!context) return SEC_E_INTERNAL_ERROR; sspi_SecureHandleSetLowerPointer(phNewContext, context); sspi_SecureHandleSetUpperPointer(phNewContext, (void*)NEGO_SSP_NAME); } /* if Kerberos has previously failed or WITH_GSSAPI is not defined, we use NTLM directly */ if (ErrorInitContextKerberos == FALSE) { if (!pInput) { negotiate_SetSubPackage(context, KERBEROS_SSP_NAME); } status = context->sspiA->InitializeSecurityContextA( phCredential, &(context->SubContext), pszTargetName, fContextReq, Reserved1, TargetDataRep, pInput, Reserved2, &(context->SubContext), pOutput, pfContextAttr, ptsExpiry); if (status == SEC_E_NO_CREDENTIALS) { WLog_WARN(TAG, "No Kerberos credentials. Retry with NTLM"); ErrorInitContextKerberos = TRUE; context->sspiA->DeleteSecurityContext(&(context->SubContext)); negotiate_ContextFree(context); return status; } } else { if (!pInput) { context->sspiA->DeleteSecurityContext(&(context->SubContext)); negotiate_SetSubPackage(context, NTLM_SSP_NAME); } status = context->sspiA->InitializeSecurityContextA( phCredential, &(context->SubContext), pszTargetName, fContextReq, Reserved1, TargetDataRep, pInput, Reserved2, &(context->SubContext), pOutput, pfContextAttr, ptsExpiry); } return status; } static SECURITY_STATUS SEC_ENTRY negotiate_AcceptSecurityContext( PCredHandle phCredential, PCtxtHandle phContext, PSecBufferDesc pInput, ULONG fContextReq, ULONG TargetDataRep, PCtxtHandle phNewContext, PSecBufferDesc pOutput, PULONG pfContextAttr, PTimeStamp ptsTimeStamp) { SECURITY_STATUS status; NEGOTIATE_CONTEXT* context; context = (NEGOTIATE_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext); if (!context) { context = negotiate_ContextNew(); if (!context) return SEC_E_INTERNAL_ERROR; sspi_SecureHandleSetLowerPointer(phNewContext, context); sspi_SecureHandleSetUpperPointer(phNewContext, (void*)NEGO_SSP_NAME); } negotiate_SetSubPackage(context, NTLM_SSP_NAME); /* server-side Kerberos not yet implemented */ status = context->sspiA->AcceptSecurityContext( phCredential, &(context->SubContext), pInput, fContextReq, TargetDataRep, &(context->SubContext), pOutput, pfContextAttr, ptsTimeStamp); if (status != SEC_E_OK) { WLog_WARN(TAG, "AcceptSecurityContext status %s [0x%08" PRIX32 "]", GetSecurityStatusString(status), status); } return status; } static SECURITY_STATUS SEC_ENTRY negotiate_CompleteAuthToken(PCtxtHandle phContext, PSecBufferDesc pToken) { NEGOTIATE_CONTEXT* context; SECURITY_STATUS status = SEC_E_OK; context = (NEGOTIATE_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext); if (!context) return SEC_E_INVALID_HANDLE; if (context->sspiW->CompleteAuthToken) status = context->sspiW->CompleteAuthToken(&(context->SubContext), pToken); return status; } static SECURITY_STATUS SEC_ENTRY negotiate_DeleteSecurityContext(PCtxtHandle phContext) { NEGOTIATE_CONTEXT* context; SECURITY_STATUS status = SEC_E_OK; context = (NEGOTIATE_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext); if (!context) return SEC_E_INVALID_HANDLE; if (context->sspiW->DeleteSecurityContext) status = context->sspiW->DeleteSecurityContext(&(context->SubContext)); negotiate_ContextFree(context); return status; } static SECURITY_STATUS SEC_ENTRY negotiate_ImpersonateSecurityContext(PCtxtHandle phContext) { NEGOTIATE_CONTEXT* context; SECURITY_STATUS status = SEC_E_OK; context = (NEGOTIATE_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext); if (!phContext) return SEC_E_INVALID_HANDLE; if (context->sspiW->ImpersonateSecurityContext) status = context->sspiW->ImpersonateSecurityContext(&(context->SubContext)); return status; } static SECURITY_STATUS SEC_ENTRY negotiate_RevertSecurityContext(PCtxtHandle phContext) { NEGOTIATE_CONTEXT* context; SECURITY_STATUS status = SEC_E_OK; context = (NEGOTIATE_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext); if (!phContext) return SEC_E_INVALID_HANDLE; if (context->sspiW->RevertSecurityContext) status = context->sspiW->RevertSecurityContext(&(context->SubContext)); return status; } static SECURITY_STATUS SEC_ENTRY negotiate_QueryContextAttributesW(PCtxtHandle phContext, ULONG ulAttribute, void* pBuffer) { NEGOTIATE_CONTEXT* context; SECURITY_STATUS status = SEC_E_OK; context = (NEGOTIATE_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext); if (!phContext) return SEC_E_INVALID_HANDLE; if (!pBuffer) return SEC_E_INSUFFICIENT_MEMORY; if (context->sspiW->QueryContextAttributesW) status = context->sspiW->QueryContextAttributesW(&(context->SubContext), ulAttribute, pBuffer); return status; } static SECURITY_STATUS SEC_ENTRY negotiate_QueryContextAttributesA(PCtxtHandle phContext, ULONG ulAttribute, void* pBuffer) { NEGOTIATE_CONTEXT* context; SECURITY_STATUS status = SEC_E_OK; context = (NEGOTIATE_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext); if (!phContext) return SEC_E_INVALID_HANDLE; if (!pBuffer) return SEC_E_INSUFFICIENT_MEMORY; if (context->sspiA->QueryContextAttributesA) status = context->sspiA->QueryContextAttributesA(&(context->SubContext), ulAttribute, pBuffer); return status; } static SECURITY_STATUS SEC_ENTRY negotiate_SetContextAttributesW(PCtxtHandle phContext, ULONG ulAttribute, void* pBuffer, ULONG cbBuffer) { NEGOTIATE_CONTEXT* context; SECURITY_STATUS status = SEC_E_OK; context = (NEGOTIATE_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext); if (!phContext) return SEC_E_INVALID_HANDLE; if (!pBuffer) return SEC_E_INSUFFICIENT_MEMORY; if (context->sspiW->SetContextAttributesW) status = context->sspiW->SetContextAttributesW(&(context->SubContext), ulAttribute, pBuffer, cbBuffer); return status; } static SECURITY_STATUS SEC_ENTRY negotiate_SetContextAttributesA(PCtxtHandle phContext, ULONG ulAttribute, void* pBuffer, ULONG cbBuffer) { NEGOTIATE_CONTEXT* context; SECURITY_STATUS status = SEC_E_OK; context = (NEGOTIATE_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext); if (!phContext) return SEC_E_INVALID_HANDLE; if (!pBuffer) return SEC_E_INSUFFICIENT_MEMORY; if (context->sspiA->SetContextAttributesA) status = context->sspiA->SetContextAttributesA(&(context->SubContext), ulAttribute, pBuffer, cbBuffer); return status; } static SECURITY_STATUS SEC_ENTRY negotiate_AcquireCredentialsHandleW( SEC_WCHAR* pszPrincipal, SEC_WCHAR* pszPackage, ULONG fCredentialUse, void* pvLogonID, void* pAuthData, SEC_GET_KEY_FN pGetKeyFn, void* pvGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry) { SSPI_CREDENTIALS* credentials; SEC_WINNT_AUTH_IDENTITY* identity; if ((fCredentialUse != SECPKG_CRED_OUTBOUND) && (fCredentialUse != SECPKG_CRED_INBOUND) && (fCredentialUse != SECPKG_CRED_BOTH)) { return SEC_E_INVALID_PARAMETER; } credentials = sspi_CredentialsNew(); if (!credentials) return SEC_E_INTERNAL_ERROR; credentials->fCredentialUse = fCredentialUse; credentials->pGetKeyFn = pGetKeyFn; credentials->pvGetKeyArgument = pvGetKeyArgument; identity = (SEC_WINNT_AUTH_IDENTITY*)pAuthData; if (identity) sspi_CopyAuthIdentity(&(credentials->identity), identity); sspi_SecureHandleSetLowerPointer(phCredential, (void*)credentials); sspi_SecureHandleSetUpperPointer(phCredential, (void*)NEGO_SSP_NAME); return SEC_E_OK; } static SECURITY_STATUS SEC_ENTRY negotiate_AcquireCredentialsHandleA( SEC_CHAR* pszPrincipal, SEC_CHAR* pszPackage, ULONG fCredentialUse, void* pvLogonID, void* pAuthData, SEC_GET_KEY_FN pGetKeyFn, void* pvGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry) { SSPI_CREDENTIALS* credentials; SEC_WINNT_AUTH_IDENTITY* identity; if ((fCredentialUse != SECPKG_CRED_OUTBOUND) && (fCredentialUse != SECPKG_CRED_INBOUND) && (fCredentialUse != SECPKG_CRED_BOTH)) { return SEC_E_INVALID_PARAMETER; } credentials = sspi_CredentialsNew(); if (!credentials) return SEC_E_INTERNAL_ERROR; credentials->fCredentialUse = fCredentialUse; credentials->pGetKeyFn = pGetKeyFn; credentials->pvGetKeyArgument = pvGetKeyArgument; identity = (SEC_WINNT_AUTH_IDENTITY*)pAuthData; if (identity) sspi_CopyAuthIdentity(&(credentials->identity), identity); sspi_SecureHandleSetLowerPointer(phCredential, (void*)credentials); sspi_SecureHandleSetUpperPointer(phCredential, (void*)NEGO_SSP_NAME); return SEC_E_OK; } static SECURITY_STATUS SEC_ENTRY negotiate_QueryCredentialsAttributesW(PCredHandle phCredential, ULONG ulAttribute, void* pBuffer) { WLog_ERR(TAG, "[%s]: TODO: Implement", __FUNCTION__); return SEC_E_UNSUPPORTED_FUNCTION; } static SECURITY_STATUS SEC_ENTRY negotiate_QueryCredentialsAttributesA(PCredHandle phCredential, ULONG ulAttribute, void* pBuffer) { WLog_ERR(TAG, "[%s]: TODO: Implement", __FUNCTION__); return SEC_E_UNSUPPORTED_FUNCTION; } static SECURITY_STATUS SEC_ENTRY negotiate_FreeCredentialsHandle(PCredHandle phCredential) { SSPI_CREDENTIALS* credentials; if (!phCredential) return SEC_E_INVALID_HANDLE; credentials = (SSPI_CREDENTIALS*)sspi_SecureHandleGetLowerPointer(phCredential); if (!credentials) return SEC_E_INVALID_HANDLE; sspi_CredentialsFree(credentials); sspi_SecureHandleInvalidate(phCredential); return SEC_E_OK; } static SECURITY_STATUS SEC_ENTRY negotiate_EncryptMessage(PCtxtHandle phContext, ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo) { NEGOTIATE_CONTEXT* context; SECURITY_STATUS status = SEC_E_UNSUPPORTED_FUNCTION; context = (NEGOTIATE_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext); if (context->sspiW->EncryptMessage) status = context->sspiW->EncryptMessage(&(context->SubContext), fQOP, pMessage, MessageSeqNo); else WLog_WARN(TAG, "[%s] SSPI implementation of function is missing", __FUNCTION__); return status; } static SECURITY_STATUS SEC_ENTRY negotiate_DecryptMessage(PCtxtHandle phContext, PSecBufferDesc pMessage, ULONG MessageSeqNo, ULONG* pfQOP) { NEGOTIATE_CONTEXT* context; SECURITY_STATUS status = SEC_E_UNSUPPORTED_FUNCTION; context = (NEGOTIATE_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext); if (context->sspiW->DecryptMessage) status = context->sspiW->DecryptMessage(&(context->SubContext), pMessage, MessageSeqNo, pfQOP); else WLog_WARN(TAG, "[%s] SSPI implementation of function is missing", __FUNCTION__); return status; } static SECURITY_STATUS SEC_ENTRY negotiate_MakeSignature(PCtxtHandle phContext, ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo) { NEGOTIATE_CONTEXT* context; SECURITY_STATUS status = SEC_E_UNSUPPORTED_FUNCTION; context = (NEGOTIATE_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext); if (context->sspiW->MakeSignature) status = context->sspiW->MakeSignature(&(context->SubContext), fQOP, pMessage, MessageSeqNo); else WLog_WARN(TAG, "[%s] SSPI implementation of function is missing", __FUNCTION__); return status; } static SECURITY_STATUS SEC_ENTRY negotiate_VerifySignature(PCtxtHandle phContext, PSecBufferDesc pMessage, ULONG MessageSeqNo, ULONG* pfQOP) { NEGOTIATE_CONTEXT* context; SECURITY_STATUS status = SEC_E_UNSUPPORTED_FUNCTION; context = (NEGOTIATE_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext); if (context->sspiW->VerifySignature) status = context->sspiW->VerifySignature(&(context->SubContext), pMessage, MessageSeqNo, pfQOP); else WLog_WARN(TAG, "[%s] SSPI implementation of function is missing", __FUNCTION__); return status; } const SecurityFunctionTableA NEGOTIATE_SecurityFunctionTableA = { 1, /* dwVersion */ NULL, /* EnumerateSecurityPackages */ negotiate_QueryCredentialsAttributesA, /* QueryCredentialsAttributes */ negotiate_AcquireCredentialsHandleA, /* AcquireCredentialsHandle */ negotiate_FreeCredentialsHandle, /* FreeCredentialsHandle */ NULL, /* Reserved2 */ negotiate_InitializeSecurityContextA, /* InitializeSecurityContext */ negotiate_AcceptSecurityContext, /* AcceptSecurityContext */ negotiate_CompleteAuthToken, /* CompleteAuthToken */ negotiate_DeleteSecurityContext, /* DeleteSecurityContext */ NULL, /* ApplyControlToken */ negotiate_QueryContextAttributesA, /* QueryContextAttributes */ negotiate_ImpersonateSecurityContext, /* ImpersonateSecurityContext */ negotiate_RevertSecurityContext, /* RevertSecurityContext */ negotiate_MakeSignature, /* MakeSignature */ negotiate_VerifySignature, /* VerifySignature */ NULL, /* FreeContextBuffer */ NULL, /* QuerySecurityPackageInfo */ NULL, /* Reserved3 */ NULL, /* Reserved4 */ NULL, /* ExportSecurityContext */ NULL, /* ImportSecurityContext */ NULL, /* AddCredentials */ NULL, /* Reserved8 */ NULL, /* QuerySecurityContextToken */ negotiate_EncryptMessage, /* EncryptMessage */ negotiate_DecryptMessage, /* DecryptMessage */ negotiate_SetContextAttributesA, /* SetContextAttributes */ }; const SecurityFunctionTableW NEGOTIATE_SecurityFunctionTableW = { 1, /* dwVersion */ NULL, /* EnumerateSecurityPackages */ negotiate_QueryCredentialsAttributesW, /* QueryCredentialsAttributes */ negotiate_AcquireCredentialsHandleW, /* AcquireCredentialsHandle */ negotiate_FreeCredentialsHandle, /* FreeCredentialsHandle */ NULL, /* Reserved2 */ negotiate_InitializeSecurityContextW, /* InitializeSecurityContext */ negotiate_AcceptSecurityContext, /* AcceptSecurityContext */ negotiate_CompleteAuthToken, /* CompleteAuthToken */ negotiate_DeleteSecurityContext, /* DeleteSecurityContext */ NULL, /* ApplyControlToken */ negotiate_QueryContextAttributesW, /* QueryContextAttributes */ negotiate_ImpersonateSecurityContext, /* ImpersonateSecurityContext */ negotiate_RevertSecurityContext, /* RevertSecurityContext */ negotiate_MakeSignature, /* MakeSignature */ negotiate_VerifySignature, /* VerifySignature */ NULL, /* FreeContextBuffer */ NULL, /* QuerySecurityPackageInfo */ NULL, /* Reserved3 */ NULL, /* Reserved4 */ NULL, /* ExportSecurityContext */ NULL, /* ImportSecurityContext */ NULL, /* AddCredentials */ NULL, /* Reserved8 */ NULL, /* QuerySecurityContextToken */ negotiate_EncryptMessage, /* EncryptMessage */ negotiate_DecryptMessage, /* DecryptMessage */ negotiate_SetContextAttributesW, /* SetContextAttributes */ };