/**
* WinPR: Windows Portable Runtime
* Schannel Security Package
*
* Copyright 2012-2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
*
* 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 <winpr/crt.h>
#include <winpr/sspi.h>
#include "schannel.h"
#include "../sspi.h"
static char* SCHANNEL_PACKAGE_NAME = "Schannel";
SCHANNEL_CONTEXT* schannel_ContextNew(void)
{
SCHANNEL_CONTEXT* context;
context = (SCHANNEL_CONTEXT*)calloc(1, sizeof(SCHANNEL_CONTEXT));
if (!context)
return NULL;
context->openssl = schannel_openssl_new();
if (!context->openssl)
{
free(context);
return NULL;
}
return context;
}
void schannel_ContextFree(SCHANNEL_CONTEXT* context)
{
if (!context)
return;
schannel_openssl_free(context->openssl);
free(context);
}
static SCHANNEL_CREDENTIALS* schannel_CredentialsNew(void)
{
SCHANNEL_CREDENTIALS* credentials;
credentials = (SCHANNEL_CREDENTIALS*)calloc(1, sizeof(SCHANNEL_CREDENTIALS));
return credentials;
}
static void schannel_CredentialsFree(SCHANNEL_CREDENTIALS* credentials)
{
free(credentials);
}
static ALG_ID schannel_SupportedAlgs[] = { CALG_AES_128,
CALG_AES_256,
CALG_RC4,
CALG_DES,
CALG_3DES,
CALG_MD5,
CALG_SHA1,
CALG_SHA_256,
CALG_SHA_384,
CALG_SHA_512,
CALG_RSA_SIGN,
CALG_DH_EPHEM,
(ALG_CLASS_KEY_EXCHANGE | ALG_TYPE_RESERVED7 |
6), /* what is this? */
CALG_DSS_SIGN,
CALG_ECDSA };
static SECURITY_STATUS SEC_ENTRY schannel_QueryCredentialsAttributesW(PCredHandle phCredential,
ULONG ulAttribute,
void* pBuffer)
{
if (ulAttribute == SECPKG_ATTR_SUPPORTED_ALGS)
{
PSecPkgCred_SupportedAlgs SupportedAlgs = (PSecPkgCred_SupportedAlgs)pBuffer;
SupportedAlgs->cSupportedAlgs = sizeof(schannel_SupportedAlgs) / sizeof(ALG_ID);
SupportedAlgs->palgSupportedAlgs = (ALG_ID*)schannel_SupportedAlgs;
return SEC_E_OK;
}
else if (ulAttribute == SECPKG_ATTR_CIPHER_STRENGTHS)
{
PSecPkgCred_CipherStrengths CipherStrengths = (PSecPkgCred_CipherStrengths)pBuffer;
CipherStrengths->dwMinimumCipherStrength = 40;
CipherStrengths->dwMaximumCipherStrength = 256;
return SEC_E_OK;
}
else if (ulAttribute == SECPKG_ATTR_SUPPORTED_PROTOCOLS)
{
PSecPkgCred_SupportedProtocols SupportedProtocols = (PSecPkgCred_SupportedProtocols)pBuffer;
/* Observed SupportedProtocols: 0x208A0 */
SupportedProtocols->grbitProtocol = (SP_PROT_CLIENTS | SP_PROT_SERVERS);
return SEC_E_OK;
}
return SEC_E_UNSUPPORTED_FUNCTION;
}
static SECURITY_STATUS SEC_ENTRY schannel_QueryCredentialsAttributesA(PCredHandle phCredential,
ULONG ulAttribute,
void* pBuffer)
{
return schannel_QueryCredentialsAttributesW(phCredential, ulAttribute, pBuffer);
}
static SECURITY_STATUS SEC_ENTRY schannel_AcquireCredentialsHandleW(
SEC_WCHAR* pszPrincipal, SEC_WCHAR* pszPackage, ULONG fCredentialUse, void* pvLogonID,
void* pAuthData, SEC_GET_KEY_FN pGetKeyFn, void* pvGetKeyArgument, PCredHandle phCredential,
PTimeStamp ptsExpiry)
{
SCHANNEL_CREDENTIALS* credentials;
if (fCredentialUse == SECPKG_CRED_OUTBOUND)
{
SCHANNEL_CRED* cred;
credentials = schannel_CredentialsNew();
credentials->fCredentialUse = fCredentialUse;
cred = (SCHANNEL_CRED*)pAuthData;
if (cred)
{
CopyMemory(&credentials->cred, cred, sizeof(SCHANNEL_CRED));
}
sspi_SecureHandleSetLowerPointer(phCredential, (void*)credentials);
sspi_SecureHandleSetUpperPointer(phCredential, (void*)SCHANNEL_PACKAGE_NAME);
return SEC_E_OK;
}
else if (fCredentialUse == SECPKG_CRED_INBOUND)
{
credentials = schannel_CredentialsNew();
credentials->fCredentialUse = fCredentialUse;
sspi_SecureHandleSetLowerPointer(phCredential, (void*)credentials);
sspi_SecureHandleSetUpperPointer(phCredential, (void*)SCHANNEL_PACKAGE_NAME);
return SEC_E_OK;
}
return SEC_E_OK;
}
static SECURITY_STATUS SEC_ENTRY schannel_AcquireCredentialsHandleA(
SEC_CHAR* pszPrincipal, SEC_CHAR* pszPackage, ULONG fCredentialUse, void* pvLogonID,
void* pAuthData, SEC_GET_KEY_FN pGetKeyFn, void* pvGetKeyArgument, PCredHandle phCredential,
PTimeStamp ptsExpiry)
{
SECURITY_STATUS status;
SEC_WCHAR* pszPrincipalW = NULL;
SEC_WCHAR* pszPackageW = NULL;
ConvertToUnicode(CP_UTF8, 0, pszPrincipal, -1, &pszPrincipalW, 0);
ConvertToUnicode(CP_UTF8, 0, pszPackage, -1, &pszPackageW, 0);
status = schannel_AcquireCredentialsHandleW(pszPrincipalW, pszPackageW, fCredentialUse,
pvLogonID, pAuthData, pGetKeyFn, pvGetKeyArgument,
phCredential, ptsExpiry);
free(pszPrincipalW);
free(pszPackageW);
return status;
}
static SECURITY_STATUS SEC_ENTRY schannel_FreeCredentialsHandle(PCredHandle phCredential)
{
SCHANNEL_CREDENTIALS* credentials;
if (!phCredential)
return SEC_E_INVALID_HANDLE;
credentials = (SCHANNEL_CREDENTIALS*)sspi_SecureHandleGetLowerPointer(phCredential);
if (!credentials)
return SEC_E_INVALID_HANDLE;
schannel_CredentialsFree(credentials);
return SEC_E_OK;
}
static SECURITY_STATUS SEC_ENTRY schannel_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;
SCHANNEL_CONTEXT* context;
SCHANNEL_CREDENTIALS* credentials;
context = sspi_SecureHandleGetLowerPointer(phContext);
if (!context)
{
context = schannel_ContextNew();
if (!context)
return SEC_E_INSUFFICIENT_MEMORY;
credentials = (SCHANNEL_CREDENTIALS*)sspi_SecureHandleGetLowerPointer(phCredential);
context->server = FALSE;
CopyMemory(&context->cred, &credentials->cred, sizeof(SCHANNEL_CRED));
sspi_SecureHandleSetLowerPointer(phNewContext, context);
sspi_SecureHandleSetUpperPointer(phNewContext, (void*)SCHANNEL_PACKAGE_NAME);
schannel_openssl_client_init(context->openssl);
}
status = schannel_openssl_client_process_tokens(context->openssl, pInput, pOutput);
return status;
}
static SECURITY_STATUS SEC_ENTRY schannel_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;
SEC_WCHAR* pszTargetNameW = NULL;
if (pszTargetName != NULL)
{
ConvertToUnicode(CP_UTF8, 0, pszTargetName, -1, &pszTargetNameW, 0);
}
status = schannel_InitializeSecurityContextW(
phCredential, phContext, pszTargetNameW, fContextReq, Reserved1, TargetDataRep, pInput,
Reserved2, phNewContext, pOutput, pfContextAttr, ptsExpiry);
free(pszTargetNameW);
return status;
}
static SECURITY_STATUS SEC_ENTRY schannel_AcceptSecurityContext(
PCredHandle phCredential, PCtxtHandle phContext, PSecBufferDesc pInput, ULONG fContextReq,
ULONG TargetDataRep, PCtxtHandle phNewContext, PSecBufferDesc pOutput, PULONG pfContextAttr,
PTimeStamp ptsTimeStamp)
{
SECURITY_STATUS status;
SCHANNEL_CONTEXT* context;
context = (SCHANNEL_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext);
if (!context)
{
context = schannel_ContextNew();
if (!context)
return SEC_E_INSUFFICIENT_MEMORY;
context->server = TRUE;
sspi_SecureHandleSetLowerPointer(phNewContext, context);
sspi_SecureHandleSetUpperPointer(phNewContext, (void*)SCHANNEL_PACKAGE_NAME);
schannel_openssl_server_init(context->openssl);
}
status = schannel_openssl_server_process_tokens(context->openssl, pInput, pOutput);
return status;
}
static SECURITY_STATUS SEC_ENTRY schannel_DeleteSecurityContext(PCtxtHandle phContext)
{
SCHANNEL_CONTEXT* context;
context = (SCHANNEL_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext);
if (!context)
return SEC_E_INVALID_HANDLE;
schannel_ContextFree(context);
return SEC_E_OK;
}
static SECURITY_STATUS SEC_ENTRY schannel_QueryContextAttributes(PCtxtHandle phContext,
ULONG ulAttribute, void* pBuffer)
{
if (!phContext)
return SEC_E_INVALID_HANDLE;
if (!pBuffer)
return SEC_E_INSUFFICIENT_MEMORY;
if (ulAttribute == SECPKG_ATTR_SIZES)
{
SecPkgContext_Sizes* Sizes = (SecPkgContext_Sizes*)pBuffer;
Sizes->cbMaxToken = 0x6000;
Sizes->cbMaxSignature = 16;
Sizes->cbBlockSize = 0;
Sizes->cbSecurityTrailer = 16;
return SEC_E_OK;
}
else if (ulAttribute == SECPKG_ATTR_STREAM_SIZES)
{
SecPkgContext_StreamSizes* StreamSizes = (SecPkgContext_StreamSizes*)pBuffer;
StreamSizes->cbHeader = 5;
StreamSizes->cbTrailer = 36;
StreamSizes->cbMaximumMessage = 0x4000;
StreamSizes->cBuffers = 4;
StreamSizes->cbBlockSize = 16;
return SEC_E_OK;
}
return SEC_E_UNSUPPORTED_FUNCTION;
}
static SECURITY_STATUS SEC_ENTRY schannel_MakeSignature(PCtxtHandle phContext, ULONG fQOP,
PSecBufferDesc pMessage, ULONG MessageSeqNo)
{
return SEC_E_OK;
}
static SECURITY_STATUS SEC_ENTRY schannel_VerifySignature(PCtxtHandle phContext,
PSecBufferDesc pMessage,
ULONG MessageSeqNo, ULONG* pfQOP)
{
return SEC_E_OK;
}
static SECURITY_STATUS SEC_ENTRY schannel_EncryptMessage(PCtxtHandle phContext, ULONG fQOP,
PSecBufferDesc pMessage,
ULONG MessageSeqNo)
{
SECURITY_STATUS status;
SCHANNEL_CONTEXT* context;
context = (SCHANNEL_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext);
if (!context)
return SEC_E_INVALID_HANDLE;
status = schannel_openssl_encrypt_message(context->openssl, pMessage);
return status;
}
static SECURITY_STATUS SEC_ENTRY schannel_DecryptMessage(PCtxtHandle phContext,
PSecBufferDesc pMessage,
ULONG MessageSeqNo, ULONG* pfQOP)
{
SECURITY_STATUS status;
SCHANNEL_CONTEXT* context;
context = (SCHANNEL_CONTEXT*)sspi_SecureHandleGetLowerPointer(phContext);
if (!context)
return SEC_E_INVALID_HANDLE;
status = schannel_openssl_decrypt_message(context->openssl, pMessage);
return status;
}
const SecurityFunctionTableA SCHANNEL_SecurityFunctionTableA = {
1, /* dwVersion */
NULL, /* EnumerateSecurityPackages */
schannel_QueryCredentialsAttributesA, /* QueryCredentialsAttributes */
schannel_AcquireCredentialsHandleA, /* AcquireCredentialsHandle */
schannel_FreeCredentialsHandle, /* FreeCredentialsHandle */
NULL, /* Reserved2 */
schannel_InitializeSecurityContextA, /* InitializeSecurityContext */
schannel_AcceptSecurityContext, /* AcceptSecurityContext */
NULL, /* CompleteAuthToken */
schannel_DeleteSecurityContext, /* DeleteSecurityContext */
NULL, /* ApplyControlToken */
schannel_QueryContextAttributes, /* QueryContextAttributes */
NULL, /* ImpersonateSecurityContext */
NULL, /* RevertSecurityContext */
schannel_MakeSignature, /* MakeSignature */
schannel_VerifySignature, /* VerifySignature */
NULL, /* FreeContextBuffer */
NULL, /* QuerySecurityPackageInfo */
NULL, /* Reserved3 */
NULL, /* Reserved4 */
NULL, /* ExportSecurityContext */
NULL, /* ImportSecurityContext */
NULL, /* AddCredentials */
NULL, /* Reserved8 */
NULL, /* QuerySecurityContextToken */
schannel_EncryptMessage, /* EncryptMessage */
schannel_DecryptMessage, /* DecryptMessage */
NULL, /* SetContextAttributes */
};
const SecurityFunctionTableW SCHANNEL_SecurityFunctionTableW = {
1, /* dwVersion */
NULL, /* EnumerateSecurityPackages */
schannel_QueryCredentialsAttributesW, /* QueryCredentialsAttributes */
schannel_AcquireCredentialsHandleW, /* AcquireCredentialsHandle */
schannel_FreeCredentialsHandle, /* FreeCredentialsHandle */
NULL, /* Reserved2 */
schannel_InitializeSecurityContextW, /* InitializeSecurityContext */
schannel_AcceptSecurityContext, /* AcceptSecurityContext */
NULL, /* CompleteAuthToken */
schannel_DeleteSecurityContext, /* DeleteSecurityContext */
NULL, /* ApplyControlToken */
schannel_QueryContextAttributes, /* QueryContextAttributes */
NULL, /* ImpersonateSecurityContext */
NULL, /* RevertSecurityContext */
schannel_MakeSignature, /* MakeSignature */
schannel_VerifySignature, /* VerifySignature */
NULL, /* FreeContextBuffer */
NULL, /* QuerySecurityPackageInfo */
NULL, /* Reserved3 */
NULL, /* Reserved4 */
NULL, /* ExportSecurityContext */
NULL, /* ImportSecurityContext */
NULL, /* AddCredentials */
NULL, /* Reserved8 */
NULL, /* QuerySecurityContextToken */
schannel_EncryptMessage, /* EncryptMessage */
schannel_DecryptMessage, /* DecryptMessage */
NULL, /* SetContextAttributes */
};
const SecPkgInfoA SCHANNEL_SecPkgInfoA = {
0x000107B3, /* fCapabilities */
1, /* wVersion */
0x000E, /* wRPCID */
SCHANNEL_CB_MAX_TOKEN, /* cbMaxToken */
"Schannel", /* Name */
"Schannel Security Package" /* Comment */
};
WCHAR SCHANNEL_SecPkgInfoW_Name[] = { 'S', 'c', 'h', 'a', 'n', 'n', 'e', 'l', '\0' };
WCHAR SCHANNEL_SecPkgInfoW_Comment[] = { 'S', 'c', 'h', 'a', 'n', 'n', 'e', 'l', ' ',
'S', 'e', 'c', 'u', 'r', 'i', 't', 'y', ' ',
'P', 'a', 'c', 'k', 'a', 'g', 'e', '\0' };
const SecPkgInfoW SCHANNEL_SecPkgInfoW = {
0x000107B3, /* fCapabilities */
1, /* wVersion */
0x000E, /* wRPCID */
SCHANNEL_CB_MAX_TOKEN, /* cbMaxToken */
SCHANNEL_SecPkgInfoW_Name, /* Name */
SCHANNEL_SecPkgInfoW_Comment /* Comment */
};