470 lines
13 KiB
C
470 lines
13 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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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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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char* SCHANNEL_PACKAGE_NAME = "Schannel";
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SCHANNEL_CONTEXT* schannel_ContextNew()
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{
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SCHANNEL_CONTEXT* context;
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context = (SCHANNEL_CONTEXT*) malloc(sizeof(SCHANNEL_CONTEXT));
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if (context != NULL)
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{
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ZeroMemory(context, sizeof(SCHANNEL_CONTEXT));
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context->openssl = schannel_openssl_new();
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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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SCHANNEL_CREDENTIALS* schannel_CredentialsNew()
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{
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SCHANNEL_CREDENTIALS* credentials;
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credentials = (SCHANNEL_CREDENTIALS*) malloc(sizeof(SCHANNEL_CREDENTIALS));
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if (credentials != NULL)
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{
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ZeroMemory(credentials, sizeof(SCHANNEL_CREDENTIALS));
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}
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return credentials;
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}
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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[] =
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{
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CALG_AES_128, CALG_AES_256, CALG_RC4, CALG_DES, CALG_3DES,
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CALG_MD5, CALG_SHA1, CALG_SHA_256, CALG_SHA_384, CALG_SHA_512,
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CALG_RSA_SIGN, CALG_DH_EPHEM,
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(ALG_CLASS_KEY_EXCHANGE | ALG_TYPE_RESERVED7 | 6), /* what is this? */
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CALG_DSS_SIGN, CALG_ECDSA
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};
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SECURITY_STATUS SEC_ENTRY schannel_QueryCredentialsAttributesW(PCredHandle phCredential, ULONG ulAttribute, 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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return SEC_E_UNSUPPORTED_FUNCTION;
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}
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SECURITY_STATUS SEC_ENTRY schannel_QueryCredentialsAttributesA(PCredHandle phCredential, ULONG ulAttribute, void* pBuffer)
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{
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return schannel_QueryCredentialsAttributesW(phCredential, ulAttribute, pBuffer);
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}
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SECURITY_STATUS SEC_ENTRY schannel_AcquireCredentialsHandleW(SEC_WCHAR* pszPrincipal, SEC_WCHAR* pszPackage,
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ULONG fCredentialUse, void* pvLogonID, void* pAuthData, SEC_GET_KEY_FN pGetKeyFn,
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void* pvGetKeyArgument, PCredHandle phCredential, 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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SECURITY_STATUS SEC_ENTRY schannel_AcquireCredentialsHandleA(SEC_CHAR* pszPrincipal, SEC_CHAR* pszPackage,
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ULONG fCredentialUse, void* pvLogonID, void* pAuthData, SEC_GET_KEY_FN pGetKeyFn,
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void* pvGetKeyArgument, PCredHandle phCredential, 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, pvLogonID,
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pAuthData, pGetKeyFn, pvGetKeyArgument, phCredential, ptsExpiry);
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free(pszPrincipalW);
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free(pszPackageW);
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return SEC_E_OK;
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}
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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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SECURITY_STATUS SEC_ENTRY schannel_InitializeSecurityContextW(PCredHandle phCredential, PCtxtHandle phContext,
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SEC_WCHAR* pszTargetName, ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
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PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
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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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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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SECURITY_STATUS SEC_ENTRY schannel_InitializeSecurityContextA(PCredHandle phCredential, PCtxtHandle phContext,
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SEC_CHAR* pszTargetName, ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
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PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
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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(phCredential, phContext, pszTargetNameW, fContextReq,
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Reserved1, TargetDataRep, pInput, 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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SECURITY_STATUS SEC_ENTRY schannel_AcceptSecurityContext(PCredHandle phCredential, PCtxtHandle phContext,
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PSecBufferDesc pInput, ULONG fContextReq, ULONG TargetDataRep, PCtxtHandle phNewContext,
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PSecBufferDesc pOutput, PULONG pfContextAttr, PTimeStamp ptsTimeStamp)
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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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status = SEC_E_OK;
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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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credentials = (SCHANNEL_CREDENTIALS*) sspi_SecureHandleGetLowerPointer(phCredential);
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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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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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SECURITY_STATUS SEC_ENTRY schannel_QueryContextAttributes(PCtxtHandle phContext, 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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return SEC_E_UNSUPPORTED_FUNCTION;
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}
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SECURITY_STATUS SEC_ENTRY schannel_MakeSignature(PCtxtHandle phContext, ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo)
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{
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return SEC_E_OK;
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}
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SECURITY_STATUS SEC_ENTRY schannel_VerifySignature(PCtxtHandle phContext, PSecBufferDesc pMessage, ULONG MessageSeqNo, ULONG* pfQOP)
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{
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return SEC_E_OK;
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}
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SECURITY_STATUS SEC_ENTRY schannel_EncryptMessage(PCtxtHandle phContext, ULONG fQOP, PSecBufferDesc pMessage, 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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SECURITY_STATUS SEC_ENTRY schannel_DecryptMessage(PCtxtHandle phContext, PSecBufferDesc pMessage, 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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{
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1, /* 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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};
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const SecurityFunctionTableW SCHANNEL_SecurityFunctionTableW =
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{
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1, /* 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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};
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const SecPkgInfoA SCHANNEL_SecPkgInfoA =
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{
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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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WCHAR SCHANNEL_SecPkgInfoW_Name[] = { 'S','c','h','a','n','n','e','l','\0' };
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WCHAR SCHANNEL_SecPkgInfoW_Comment[] =
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{
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'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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};
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const SecPkgInfoW SCHANNEL_SecPkgInfoW =
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{
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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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