457 lines
17 KiB
C
457 lines
17 KiB
C
/**
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* WinPR: Windows Portable Runtime
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* Schannel Security Package
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*
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* Copyright 2012-2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <winpr/config.h>
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#include <winpr/crt.h>
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#include <winpr/sspi.h>
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#include "schannel.h"
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#include "../sspi.h"
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#include "../../log.h"
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static char* SCHANNEL_PACKAGE_NAME = "Schannel";
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#define TAG WINPR_TAG("sspi.Schannel")
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SCHANNEL_CONTEXT* schannel_ContextNew(void)
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{
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SCHANNEL_CONTEXT* context;
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context = (SCHANNEL_CONTEXT*)calloc(1, sizeof(SCHANNEL_CONTEXT));
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if (!context)
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return NULL;
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context->openssl = schannel_openssl_new();
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if (!context->openssl)
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{
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free(context);
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return NULL;
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}
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return context;
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}
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void schannel_ContextFree(SCHANNEL_CONTEXT* context)
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{
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if (!context)
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return;
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schannel_openssl_free(context->openssl);
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free(context);
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}
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static SCHANNEL_CREDENTIALS* schannel_CredentialsNew(void)
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{
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SCHANNEL_CREDENTIALS* credentials;
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credentials = (SCHANNEL_CREDENTIALS*)calloc(1, sizeof(SCHANNEL_CREDENTIALS));
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return credentials;
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}
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static void schannel_CredentialsFree(SCHANNEL_CREDENTIALS* credentials)
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{
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free(credentials);
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}
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static ALG_ID schannel_SupportedAlgs[] = { CALG_AES_128,
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CALG_AES_256,
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CALG_RC4,
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CALG_DES,
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CALG_3DES,
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CALG_MD5,
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CALG_SHA1,
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CALG_SHA_256,
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CALG_SHA_384,
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CALG_SHA_512,
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CALG_RSA_SIGN,
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CALG_DH_EPHEM,
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(ALG_CLASS_KEY_EXCHANGE | ALG_TYPE_RESERVED7 |
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6), /* what is this? */
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CALG_DSS_SIGN,
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CALG_ECDSA };
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static SECURITY_STATUS SEC_ENTRY schannel_QueryCredentialsAttributesW(PCredHandle phCredential,
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ULONG ulAttribute,
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void* pBuffer)
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{
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if (ulAttribute == SECPKG_ATTR_SUPPORTED_ALGS)
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{
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PSecPkgCred_SupportedAlgs SupportedAlgs = (PSecPkgCred_SupportedAlgs)pBuffer;
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SupportedAlgs->cSupportedAlgs = sizeof(schannel_SupportedAlgs) / sizeof(ALG_ID);
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SupportedAlgs->palgSupportedAlgs = (ALG_ID*)schannel_SupportedAlgs;
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return SEC_E_OK;
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}
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else if (ulAttribute == SECPKG_ATTR_CIPHER_STRENGTHS)
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{
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PSecPkgCred_CipherStrengths CipherStrengths = (PSecPkgCred_CipherStrengths)pBuffer;
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CipherStrengths->dwMinimumCipherStrength = 40;
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CipherStrengths->dwMaximumCipherStrength = 256;
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return SEC_E_OK;
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}
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else if (ulAttribute == SECPKG_ATTR_SUPPORTED_PROTOCOLS)
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{
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PSecPkgCred_SupportedProtocols SupportedProtocols = (PSecPkgCred_SupportedProtocols)pBuffer;
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/* Observed SupportedProtocols: 0x208A0 */
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SupportedProtocols->grbitProtocol = (SP_PROT_CLIENTS | SP_PROT_SERVERS);
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return SEC_E_OK;
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}
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WLog_ERR(TAG, "[%s]: TODO: Implement ulAttribute=%08" PRIx32, __FUNCTION__, ulAttribute);
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return SEC_E_UNSUPPORTED_FUNCTION;
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}
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static SECURITY_STATUS SEC_ENTRY schannel_QueryCredentialsAttributesA(PCredHandle phCredential,
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ULONG ulAttribute,
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void* pBuffer)
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{
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return schannel_QueryCredentialsAttributesW(phCredential, ulAttribute, pBuffer);
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}
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static SECURITY_STATUS SEC_ENTRY schannel_AcquireCredentialsHandleW(
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SEC_WCHAR* pszPrincipal, SEC_WCHAR* pszPackage, ULONG fCredentialUse, void* pvLogonID,
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void* pAuthData, SEC_GET_KEY_FN pGetKeyFn, void* pvGetKeyArgument, PCredHandle phCredential,
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PTimeStamp ptsExpiry)
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{
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SCHANNEL_CREDENTIALS* credentials;
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if (fCredentialUse == SECPKG_CRED_OUTBOUND)
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{
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SCHANNEL_CRED* cred;
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credentials = schannel_CredentialsNew();
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credentials->fCredentialUse = fCredentialUse;
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cred = (SCHANNEL_CRED*)pAuthData;
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if (cred)
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{
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CopyMemory(&credentials->cred, cred, sizeof(SCHANNEL_CRED));
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}
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sspi_SecureHandleSetLowerPointer(phCredential, (void*)credentials);
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sspi_SecureHandleSetUpperPointer(phCredential, (void*)SCHANNEL_PACKAGE_NAME);
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return SEC_E_OK;
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}
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else if (fCredentialUse == SECPKG_CRED_INBOUND)
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{
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credentials = schannel_CredentialsNew();
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credentials->fCredentialUse = fCredentialUse;
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sspi_SecureHandleSetLowerPointer(phCredential, (void*)credentials);
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sspi_SecureHandleSetUpperPointer(phCredential, (void*)SCHANNEL_PACKAGE_NAME);
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return SEC_E_OK;
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}
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return SEC_E_OK;
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}
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static SECURITY_STATUS SEC_ENTRY schannel_AcquireCredentialsHandleA(
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SEC_CHAR* pszPrincipal, SEC_CHAR* pszPackage, ULONG fCredentialUse, void* pvLogonID,
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void* pAuthData, SEC_GET_KEY_FN pGetKeyFn, void* pvGetKeyArgument, PCredHandle phCredential,
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PTimeStamp ptsExpiry)
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{
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SECURITY_STATUS status;
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SEC_WCHAR* pszPrincipalW = NULL;
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SEC_WCHAR* pszPackageW = NULL;
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ConvertToUnicode(CP_UTF8, 0, pszPrincipal, -1, &pszPrincipalW, 0);
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ConvertToUnicode(CP_UTF8, 0, pszPackage, -1, &pszPackageW, 0);
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status = schannel_AcquireCredentialsHandleW(pszPrincipalW, pszPackageW, fCredentialUse,
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pvLogonID, pAuthData, pGetKeyFn, pvGetKeyArgument,
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phCredential, ptsExpiry);
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free(pszPrincipalW);
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free(pszPackageW);
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return status;
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}
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static SECURITY_STATUS SEC_ENTRY schannel_FreeCredentialsHandle(PCredHandle phCredential)
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{
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SCHANNEL_CREDENTIALS* credentials;
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if (!phCredential)
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return SEC_E_INVALID_HANDLE;
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credentials = (SCHANNEL_CREDENTIALS*)sspi_SecureHandleGetLowerPointer(phCredential);
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if (!credentials)
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return SEC_E_INVALID_HANDLE;
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schannel_CredentialsFree(credentials);
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return SEC_E_OK;
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}
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static SECURITY_STATUS SEC_ENTRY schannel_InitializeSecurityContextW(
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PCredHandle phCredential, PCtxtHandle phContext, SEC_WCHAR* pszTargetName, ULONG fContextReq,
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ULONG Reserved1, ULONG TargetDataRep, PSecBufferDesc pInput, ULONG Reserved2,
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PCtxtHandle phNewContext, PSecBufferDesc pOutput, PULONG pfContextAttr, PTimeStamp ptsExpiry)
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{
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SECURITY_STATUS status;
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SCHANNEL_CONTEXT* context;
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SCHANNEL_CREDENTIALS* credentials;
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/* behave like windows SSPIs that don't want empty context */
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if (phContext && !phContext->dwLower && !phContext->dwUpper)
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return SEC_E_INVALID_HANDLE;
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context = sspi_SecureHandleGetLowerPointer(phContext);
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if (!context)
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{
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context = schannel_ContextNew();
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if (!context)
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return SEC_E_INSUFFICIENT_MEMORY;
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credentials = (SCHANNEL_CREDENTIALS*)sspi_SecureHandleGetLowerPointer(phCredential);
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context->server = FALSE;
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CopyMemory(&context->cred, &credentials->cred, sizeof(SCHANNEL_CRED));
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sspi_SecureHandleSetLowerPointer(phNewContext, context);
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sspi_SecureHandleSetUpperPointer(phNewContext, (void*)SCHANNEL_PACKAGE_NAME);
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schannel_openssl_client_init(context->openssl);
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}
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status = schannel_openssl_client_process_tokens(context->openssl, pInput, pOutput);
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return status;
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}
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static SECURITY_STATUS SEC_ENTRY schannel_InitializeSecurityContextA(
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PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR* pszTargetName, ULONG fContextReq,
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ULONG Reserved1, ULONG TargetDataRep, PSecBufferDesc pInput, ULONG Reserved2,
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PCtxtHandle phNewContext, PSecBufferDesc pOutput, PULONG pfContextAttr, PTimeStamp ptsExpiry)
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{
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SECURITY_STATUS status;
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SEC_WCHAR* pszTargetNameW = NULL;
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if (pszTargetName != NULL)
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{
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ConvertToUnicode(CP_UTF8, 0, pszTargetName, -1, &pszTargetNameW, 0);
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}
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status = schannel_InitializeSecurityContextW(
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phCredential, phContext, pszTargetNameW, fContextReq, Reserved1, TargetDataRep, pInput,
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Reserved2, phNewContext, pOutput, pfContextAttr, ptsExpiry);
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free(pszTargetNameW);
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return status;
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}
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static SECURITY_STATUS SEC_ENTRY schannel_AcceptSecurityContext(
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PCredHandle phCredential, PCtxtHandle phContext, PSecBufferDesc pInput, ULONG fContextReq,
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ULONG TargetDataRep, PCtxtHandle phNewContext, PSecBufferDesc pOutput, PULONG pfContextAttr,
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PTimeStamp ptsTimeStamp)
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{
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SECURITY_STATUS status;
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SCHANNEL_CONTEXT* context;
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/* behave like windows SSPIs that don't want empty context */
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if (phContext && !phContext->dwLower && !phContext->dwUpper)
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return SEC_E_INVALID_HANDLE;
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context = (SCHANNEL_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext);
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if (!context)
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{
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context = schannel_ContextNew();
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if (!context)
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return SEC_E_INSUFFICIENT_MEMORY;
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context->server = TRUE;
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sspi_SecureHandleSetLowerPointer(phNewContext, context);
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sspi_SecureHandleSetUpperPointer(phNewContext, (void*)SCHANNEL_PACKAGE_NAME);
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schannel_openssl_server_init(context->openssl);
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}
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status = schannel_openssl_server_process_tokens(context->openssl, pInput, pOutput);
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return status;
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}
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static SECURITY_STATUS SEC_ENTRY schannel_DeleteSecurityContext(PCtxtHandle phContext)
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{
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SCHANNEL_CONTEXT* context;
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context = (SCHANNEL_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext);
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if (!context)
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return SEC_E_INVALID_HANDLE;
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schannel_ContextFree(context);
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return SEC_E_OK;
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}
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static SECURITY_STATUS SEC_ENTRY schannel_QueryContextAttributes(PCtxtHandle phContext,
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ULONG ulAttribute, void* pBuffer)
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{
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if (!phContext)
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return SEC_E_INVALID_HANDLE;
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if (!pBuffer)
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return SEC_E_INSUFFICIENT_MEMORY;
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if (ulAttribute == SECPKG_ATTR_SIZES)
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{
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SecPkgContext_Sizes* Sizes = (SecPkgContext_Sizes*)pBuffer;
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Sizes->cbMaxToken = 0x6000;
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Sizes->cbMaxSignature = 16;
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Sizes->cbBlockSize = 0;
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Sizes->cbSecurityTrailer = 16;
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return SEC_E_OK;
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}
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else if (ulAttribute == SECPKG_ATTR_STREAM_SIZES)
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{
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SecPkgContext_StreamSizes* StreamSizes = (SecPkgContext_StreamSizes*)pBuffer;
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StreamSizes->cbHeader = 5;
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StreamSizes->cbTrailer = 36;
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StreamSizes->cbMaximumMessage = 0x4000;
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StreamSizes->cBuffers = 4;
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StreamSizes->cbBlockSize = 16;
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return SEC_E_OK;
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}
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WLog_ERR(TAG, "[%s]: TODO: Implement ulAttribute=%08" PRIx32, __FUNCTION__, ulAttribute);
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return SEC_E_UNSUPPORTED_FUNCTION;
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}
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static SECURITY_STATUS SEC_ENTRY schannel_MakeSignature(PCtxtHandle phContext, ULONG fQOP,
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PSecBufferDesc pMessage, ULONG MessageSeqNo)
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{
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return SEC_E_OK;
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}
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static SECURITY_STATUS SEC_ENTRY schannel_VerifySignature(PCtxtHandle phContext,
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PSecBufferDesc pMessage,
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ULONG MessageSeqNo, ULONG* pfQOP)
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{
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return SEC_E_OK;
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}
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static SECURITY_STATUS SEC_ENTRY schannel_EncryptMessage(PCtxtHandle phContext, ULONG fQOP,
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PSecBufferDesc pMessage,
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ULONG MessageSeqNo)
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{
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SECURITY_STATUS status;
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SCHANNEL_CONTEXT* context;
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context = (SCHANNEL_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext);
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if (!context)
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return SEC_E_INVALID_HANDLE;
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status = schannel_openssl_encrypt_message(context->openssl, pMessage);
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return status;
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}
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static SECURITY_STATUS SEC_ENTRY schannel_DecryptMessage(PCtxtHandle phContext,
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PSecBufferDesc pMessage,
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ULONG MessageSeqNo, ULONG* pfQOP)
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{
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SECURITY_STATUS status;
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SCHANNEL_CONTEXT* context;
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context = (SCHANNEL_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext);
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if (!context)
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return SEC_E_INVALID_HANDLE;
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status = schannel_openssl_decrypt_message(context->openssl, pMessage);
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return status;
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}
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const SecurityFunctionTableA SCHANNEL_SecurityFunctionTableA = {
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3, /* dwVersion */
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NULL, /* EnumerateSecurityPackages */
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schannel_QueryCredentialsAttributesA, /* QueryCredentialsAttributes */
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schannel_AcquireCredentialsHandleA, /* AcquireCredentialsHandle */
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schannel_FreeCredentialsHandle, /* FreeCredentialsHandle */
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NULL, /* Reserved2 */
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schannel_InitializeSecurityContextA, /* InitializeSecurityContext */
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schannel_AcceptSecurityContext, /* AcceptSecurityContext */
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NULL, /* CompleteAuthToken */
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schannel_DeleteSecurityContext, /* DeleteSecurityContext */
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NULL, /* ApplyControlToken */
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schannel_QueryContextAttributes, /* QueryContextAttributes */
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NULL, /* ImpersonateSecurityContext */
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NULL, /* RevertSecurityContext */
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schannel_MakeSignature, /* MakeSignature */
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schannel_VerifySignature, /* VerifySignature */
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NULL, /* FreeContextBuffer */
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NULL, /* QuerySecurityPackageInfo */
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NULL, /* Reserved3 */
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NULL, /* Reserved4 */
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NULL, /* ExportSecurityContext */
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NULL, /* ImportSecurityContext */
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NULL, /* AddCredentials */
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NULL, /* Reserved8 */
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NULL, /* QuerySecurityContextToken */
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schannel_EncryptMessage, /* EncryptMessage */
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schannel_DecryptMessage, /* DecryptMessage */
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NULL, /* SetContextAttributes */
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NULL, /* SetCredentialsAttributes */
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};
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const SecurityFunctionTableW SCHANNEL_SecurityFunctionTableW = {
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3, /* dwVersion */
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NULL, /* EnumerateSecurityPackages */
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schannel_QueryCredentialsAttributesW, /* QueryCredentialsAttributes */
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schannel_AcquireCredentialsHandleW, /* AcquireCredentialsHandle */
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schannel_FreeCredentialsHandle, /* FreeCredentialsHandle */
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NULL, /* Reserved2 */
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schannel_InitializeSecurityContextW, /* InitializeSecurityContext */
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schannel_AcceptSecurityContext, /* AcceptSecurityContext */
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NULL, /* CompleteAuthToken */
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schannel_DeleteSecurityContext, /* DeleteSecurityContext */
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NULL, /* ApplyControlToken */
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schannel_QueryContextAttributes, /* QueryContextAttributes */
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NULL, /* ImpersonateSecurityContext */
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NULL, /* RevertSecurityContext */
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schannel_MakeSignature, /* MakeSignature */
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schannel_VerifySignature, /* VerifySignature */
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NULL, /* FreeContextBuffer */
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NULL, /* QuerySecurityPackageInfo */
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NULL, /* Reserved3 */
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NULL, /* Reserved4 */
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NULL, /* ExportSecurityContext */
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NULL, /* ImportSecurityContext */
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NULL, /* AddCredentials */
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NULL, /* Reserved8 */
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NULL, /* QuerySecurityContextToken */
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schannel_EncryptMessage, /* EncryptMessage */
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schannel_DecryptMessage, /* DecryptMessage */
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NULL, /* SetContextAttributes */
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NULL, /* SetCredentialsAttributes */
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};
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const SecPkgInfoA SCHANNEL_SecPkgInfoA = {
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0x000107B3, /* fCapabilities */
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1, /* wVersion */
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0x000E, /* wRPCID */
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SCHANNEL_CB_MAX_TOKEN, /* cbMaxToken */
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"Schannel", /* Name */
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"Schannel Security Package" /* Comment */
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};
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static WCHAR SCHANNEL_SecPkgInfoW_Name[] = { 'S', 'c', 'h', 'a', 'n', 'n', 'e', 'l', '\0' };
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static WCHAR SCHANNEL_SecPkgInfoW_Comment[] = { 'S', 'c', 'h', 'a', 'n', 'n', 'e', 'l', ' ',
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'S', 'e', 'c', 'u', 'r', 'i', 't', 'y', ' ',
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'P', 'a', 'c', 'k', 'a', 'g', 'e', '\0' };
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const SecPkgInfoW SCHANNEL_SecPkgInfoW = {
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0x000107B3, /* fCapabilities */
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1, /* wVersion */
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0x000E, /* wRPCID */
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SCHANNEL_CB_MAX_TOKEN, /* cbMaxToken */
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SCHANNEL_SecPkgInfoW_Name, /* Name */
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SCHANNEL_SecPkgInfoW_Comment /* Comment */
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};
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