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/*
* Copyright 2002 Mike McCormack for CodeWeavers
* Copyright 2005 Juan Lang
* Copyright 2006 Paul Vriens
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include <stdio.h>
#include "windef.h"
#include "winbase.h"
#include "wincrypt.h"
#include "winreg.h"
#include "winnls.h"
#include "mssip.h"
#include "winuser.h"
#include "wine/debug.h"
#include "wine/list.h"
WINE_DEFAULT_DEBUG_CHANNEL(crypt);
static const WCHAR szOID[] = {
'S','o','f','t','w','a','r','e','\\',
'M','i','c','r','o','s','o','f','t','\\',
'C','r','y','p','t','o','g','r','a','p','h','y','\\',
'O','I','D','\\',
'E','n','c','o','d','i','n','g','T','y','p','e',' ','0','\\',
'C','r','y','p','t','S','I','P','D','l','l', 0 };
static const WCHAR szPutSigned[] = {
'P','u','t','S','i','g','n','e','d','D','a','t','a','M','s','g','\\',0};
static const WCHAR szGetSigned[] = {
'G','e','t','S','i','g','n','e','d','D','a','t','a','M','s','g','\\',0};
static const WCHAR szRemoveSigned[] = {
'R','e','m','o','v','e','S','i','g','n','e','d','D','a','t','a','M','s','g','\\',0};
static const WCHAR szCreate[] = {
'C','r','e','a','t','e','I','n','d','i','r','e','c','t','D','a','t','a','\\',0};
static const WCHAR szVerify[] = {
'V','e','r','i','f','y','I','n','d','i','r','e','c','t','D','a','t','a','\\',0};
static const WCHAR szIsMyFile[] = {
'I','s','M','y','F','i','l','e','T','y','p','e','\\',0};
static const WCHAR szIsMyFile2[] = {
'I','s','M','y','F','i','l','e','T','y','p','e','2','\\',0};
static const WCHAR szDllName[] = { 'D','l','l',0 };
static const WCHAR szFuncName[] = { 'F','u','n','c','N','a','m','e',0 };
/* convert a guid to a wide character string */
static void CRYPT_guid2wstr( const GUID *guid, LPWSTR wstr )
{
char str[40];
sprintf(str, "{%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X}",
guid->Data1, guid->Data2, guid->Data3,
guid->Data4[0], guid->Data4[1], guid->Data4[2], guid->Data4[3],
guid->Data4[4], guid->Data4[5], guid->Data4[6], guid->Data4[7] );
MultiByteToWideChar( CP_ACP, 0, str, -1, wstr, 40 );
}
/***********************************************************************
* CRYPT_SIPDeleteFunction
*
* Helper function for CryptSIPRemoveProvider
*/
static LONG CRYPT_SIPDeleteFunction( const GUID *guid, LPCWSTR szKey )
{
WCHAR szFullKey[ 0x100 ];
LONG r = ERROR_SUCCESS;
/* max length of szFullKey depends on our code only, so we won't overrun */
lstrcpyW( szFullKey, szOID );
lstrcatW( szFullKey, szKey );
CRYPT_guid2wstr( guid, &szFullKey[ lstrlenW( szFullKey ) ] );
r = RegDeleteKeyW(HKEY_LOCAL_MACHINE, szFullKey);
return r;
}
/***********************************************************************
* CryptSIPRemoveProvider (CRYPT32.@)
*
* Remove a SIP provider and its functions from the registry.
*
* PARAMS
* pgProv [I] Pointer to a GUID for this SIP provider
*
* RETURNS
* Success: TRUE.
* Failure: FALSE. (Look at GetLastError()).
*
* NOTES
* Registry errors are always reported via SetLastError(). Every registry
* deletion will be tried.
*/
BOOL WINAPI CryptSIPRemoveProvider(GUID *pgProv)
{
LONG r = ERROR_SUCCESS;
LONG remove_error = ERROR_SUCCESS;
TRACE("%s\n", debugstr_guid(pgProv));
if (!pgProv)
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
#define CRYPT_SIPREMOVEPROV( key ) \
r = CRYPT_SIPDeleteFunction( pgProv, key); \
if (r != ERROR_SUCCESS) remove_error = r
CRYPT_SIPREMOVEPROV( szPutSigned);
CRYPT_SIPREMOVEPROV( szGetSigned);
CRYPT_SIPREMOVEPROV( szRemoveSigned);
CRYPT_SIPREMOVEPROV( szCreate);
CRYPT_SIPREMOVEPROV( szVerify);
CRYPT_SIPREMOVEPROV( szIsMyFile);
CRYPT_SIPREMOVEPROV( szIsMyFile2);
#undef CRYPT_SIPREMOVEPROV
if (remove_error != ERROR_SUCCESS)
{
SetLastError(remove_error);
return FALSE;
}
return TRUE;
}
/*
* Helper for CryptSIPAddProvider
*
* Add a registry key containing a dll name and function under
* "Software\\Microsoft\\Cryptography\\OID\\EncodingType 0\\<func>\\<guid>"
*/
static LONG CRYPT_SIPWriteFunction( const GUID *guid, LPCWSTR szKey,
LPCWSTR szDll, LPCWSTR szFunction )
{
WCHAR szFullKey[ 0x100 ];
LONG r = ERROR_SUCCESS;
HKEY hKey;
if( !szFunction )
return ERROR_SUCCESS;
/* max length of szFullKey depends on our code only, so we won't overrun */
lstrcpyW( szFullKey, szOID );
lstrcatW( szFullKey, szKey );
CRYPT_guid2wstr( guid, &szFullKey[ lstrlenW( szFullKey ) ] );
TRACE("key is %s\n", debugstr_w( szFullKey ) );
r = RegCreateKeyW( HKEY_LOCAL_MACHINE, szFullKey, &hKey );
if( r != ERROR_SUCCESS ) goto error_close_key;
/* write the values */
r = RegSetValueExW( hKey, szFuncName, 0, REG_SZ, (const BYTE*) szFunction,
( lstrlenW( szFunction ) + 1 ) * sizeof (WCHAR) );
if( r != ERROR_SUCCESS ) goto error_close_key;
r = RegSetValueExW( hKey, szDllName, 0, REG_SZ, (const BYTE*) szDll,
( lstrlenW( szDll ) + 1) * sizeof (WCHAR) );
error_close_key:
RegCloseKey( hKey );
return r;
}
/***********************************************************************
* CryptSIPAddProvider (CRYPT32.@)
*
* Add a SIP provider and its functions to the registry.
*
* PARAMS
* psNewProv [I] Pointer to a structure with information about
* the functions this SIP provider can perform.
*
* RETURNS
* Success: TRUE.
* Failure: FALSE. (Look at GetLastError()).
*
* NOTES
* Registry errors are always reported via SetLastError(). If a
* registry error occurs the rest of the registry write operations
* will be skipped.
*/
BOOL WINAPI CryptSIPAddProvider(SIP_ADD_NEWPROVIDER *psNewProv)
{
LONG r = ERROR_SUCCESS;
TRACE("%p\n", psNewProv);
if (!psNewProv ||
psNewProv->cbStruct != sizeof(SIP_ADD_NEWPROVIDER) ||
!psNewProv->pwszGetFuncName ||
!psNewProv->pwszPutFuncName ||
!psNewProv->pwszCreateFuncName ||
!psNewProv->pwszVerifyFuncName ||
!psNewProv->pwszRemoveFuncName)
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
TRACE("%s %s %s %s %s\n",
debugstr_guid( psNewProv->pgSubject ),
debugstr_w( psNewProv->pwszDLLFileName ),
debugstr_w( psNewProv->pwszMagicNumber ),
debugstr_w( psNewProv->pwszIsFunctionName ),
debugstr_w( psNewProv->pwszIsFunctionNameFmt2 ) );
#define CRYPT_SIPADDPROV( key, field ) \
r = CRYPT_SIPWriteFunction( psNewProv->pgSubject, key, \
psNewProv->pwszDLLFileName, psNewProv->field); \
if (r != ERROR_SUCCESS) goto end_function
CRYPT_SIPADDPROV( szPutSigned, pwszPutFuncName );
CRYPT_SIPADDPROV( szGetSigned, pwszGetFuncName );
CRYPT_SIPADDPROV( szRemoveSigned, pwszRemoveFuncName );
CRYPT_SIPADDPROV( szCreate, pwszCreateFuncName );
CRYPT_SIPADDPROV( szVerify, pwszVerifyFuncName );
CRYPT_SIPADDPROV( szIsMyFile, pwszIsFunctionName );
CRYPT_SIPADDPROV( szIsMyFile2, pwszIsFunctionNameFmt2 );
#undef CRYPT_SIPADDPROV
end_function:
if (r != ERROR_SUCCESS)
{
SetLastError(r);
return FALSE;
}
return TRUE;
}
/***********************************************************************
* CryptSIPRetrieveSubjectGuid (CRYPT32.@)
*
* Determine the right SIP GUID for the given file.
*
* PARAMS
* FileName [I] Filename.
* hFileIn [I] Optional handle to the file.
* pgSubject [O] The SIP's GUID.
*
* RETURNS
* Success: TRUE. pgSubject contains the SIP GUID.
* Failure: FALSE. (Look at GetLastError()).
*
* NOTES
* On failure pgSubject will contain a NULL GUID.
* The handle is always preferred above the filename.
*/
BOOL WINAPI CryptSIPRetrieveSubjectGuid
(LPCWSTR FileName, HANDLE hFileIn, GUID *pgSubject)
{
HANDLE hFile;
HANDLE hFilemapped;
LPVOID pMapped;
BOOL bRet = FALSE;
DWORD fileSize;
IMAGE_DOS_HEADER *dos;
/* FIXME, find out if there is a name for this GUID */
static const GUID unknown = { 0xC689AAB8, 0x8E78, 0x11D0, { 0x8C,0x47,0x00,0xC0,0x4F,0xC2,0x95,0xEE }};
TRACE("(%s %p %p)\n", wine_dbgstr_w(FileName), hFileIn, pgSubject);
if (!pgSubject || (!FileName && !hFileIn))
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
/* Set pgSubject to zero's */
memset(pgSubject, 0 , sizeof(GUID));
if (hFileIn)
/* Use the given handle, make sure not to close this one ourselves */
hFile = hFileIn;
else
{
hFile = CreateFileW(FileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
/* Last error is set by CreateFile */
if (hFile == INVALID_HANDLE_VALUE) return FALSE;
}
hFilemapped = CreateFileMappingA(hFile, NULL, PAGE_READONLY, 0, 0, NULL);
/* Last error is set by CreateFileMapping */
if (!hFilemapped) goto cleanup3;
pMapped = MapViewOfFile(hFilemapped, FILE_MAP_READ, 0, 0, 0);
/* Last error is set by MapViewOfFile */
if (!pMapped) goto cleanup2;
/* Native checks it right here */
fileSize = GetFileSize(hFile, NULL);
if (fileSize < 4)
{
SetLastError(ERROR_INVALID_PARAMETER);
goto cleanup1;
}
/* As everything is in place now we start looking at the file header */
dos = (IMAGE_DOS_HEADER *)pMapped;
if (dos->e_magic == IMAGE_DOS_SIGNATURE)
{
memcpy(pgSubject, &unknown, sizeof(GUID));
SetLastError(S_OK);
bRet = TRUE;
goto cleanup1;
}
/* FIXME
* There is a lot more to be checked:
* - Check for MSFC in the header
* - Check for the keys CryptSIPDllIsMyFileType and CryptSIPDllIsMyFileType2
* under HKLM\Software\Microsoft\Cryptography\OID\EncodingType 0. Here are
* functions listed that need check if a SIP Provider can deal with the
* given file.
*/
/* Let's set the most common error for now */
SetLastError(TRUST_E_SUBJECT_FORM_UNKNOWN);
/* The 3 different cleanups are here because we shouldn't overwrite the last error */
cleanup1:
UnmapViewOfFile(pMapped);
cleanup2:
CloseHandle(hFilemapped);
cleanup3:
/* If we didn't open this one we shouldn't close it (hFile is a copy) */
if (!hFileIn) CloseHandle(hFile);
return bRet;
}
static LONG CRYPT_OpenSIPFunctionKey(const GUID *guid, LPCWSTR function,
HKEY *key)
{
WCHAR szFullKey[ 0x100 ];
lstrcpyW(szFullKey, szOID);
lstrcatW(szFullKey, function);
CRYPT_guid2wstr(guid, &szFullKey[lstrlenW(szFullKey)]);
return RegOpenKeyExW(HKEY_LOCAL_MACHINE, szFullKey, 0, KEY_READ, key);
}
/* Loads the function named function for the SIP specified by pgSubject, and
* returns it if found. Returns NULL on error. If the function is loaded,
* *pLib is set to the library in which it is found.
*/
static void *CRYPT_LoadSIPFunc(const GUID *pgSubject, LPCWSTR function,
HMODULE *pLib)
{
LONG r;
HKEY key = NULL;
DWORD size;
WCHAR dllName[MAX_PATH];
char functionName[MAX_PATH];
HMODULE lib;
void *func = NULL;
TRACE("(%s, %s)\n", debugstr_guid(pgSubject), debugstr_w(function));
r = CRYPT_OpenSIPFunctionKey(pgSubject, function, &key);
if (r) goto error;
/* Read the DLL entry */
size = sizeof(dllName);
r = RegQueryValueExW(key, szDllName, NULL, NULL, (LPBYTE)dllName, &size);
if (r) goto error;
/* Read the Function entry */
size = sizeof(functionName);
r = RegQueryValueExA(key, "FuncName", NULL, NULL, (LPBYTE)functionName,
&size);
if (r) goto error;
lib = LoadLibraryW(dllName);
if (!lib)
goto error;
func = GetProcAddress(lib, functionName);
if (func)
*pLib = lib;
else
FreeLibrary(lib);
error:
RegCloseKey(key);
TRACE("returning %p\n", func);
return func;
}
typedef struct _WINE_SIP_PROVIDER {
GUID subject;
SIP_DISPATCH_INFO info;
struct list entry;
} WINE_SIP_PROVIDER;
static struct list providers = { &providers, &providers };
static CRITICAL_SECTION providers_cs;
static CRITICAL_SECTION_DEBUG providers_cs_debug =
{
0, 0, &providers_cs,
{ &providers_cs_debug.ProcessLocksList,
&providers_cs_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": providers_cs") }
};
static CRITICAL_SECTION providers_cs = { &providers_cs_debug, -1, 0, 0, 0, 0 };
static void CRYPT_CacheSIP(const GUID *pgSubject, SIP_DISPATCH_INFO *info)
{
WINE_SIP_PROVIDER *prov = CryptMemAlloc(sizeof(WINE_SIP_PROVIDER));
if (prov)
{
memcpy(&prov->subject, pgSubject, sizeof(prov->subject));
memcpy(&prov->info, info, sizeof(prov->info));
EnterCriticalSection(&providers_cs);
list_add_tail(&providers, &prov->entry);
LeaveCriticalSection(&providers_cs);
}
}
static WINE_SIP_PROVIDER *CRYPT_GetCachedSIP(const GUID *pgSubject)
{
WINE_SIP_PROVIDER *provider = NULL, *ret = NULL;
EnterCriticalSection(&providers_cs);
LIST_FOR_EACH_ENTRY(provider, &providers, WINE_SIP_PROVIDER, entry)
{
if (IsEqualGUID(pgSubject, &provider->subject))
break;
}
if (provider && IsEqualGUID(pgSubject, &provider->subject))
ret = provider;
LeaveCriticalSection(&providers_cs);
return ret;
}
static inline BOOL CRYPT_IsSIPCached(const GUID *pgSubject)
{
return CRYPT_GetCachedSIP(pgSubject) != NULL;
}
void crypt_sip_free(void)
{
WINE_SIP_PROVIDER *prov, *next;
LIST_FOR_EACH_ENTRY_SAFE(prov, next, &providers, WINE_SIP_PROVIDER, entry)
{
list_remove(&prov->entry);
FreeLibrary(prov->info.hSIP);
CryptMemFree(prov);
}
}
/* Loads the SIP for pgSubject into the global cache. Returns FALSE if the
* SIP isn't registered or is invalid.
*/
static BOOL CRYPT_LoadSIP(const GUID *pgSubject)
{
SIP_DISPATCH_INFO sip = { 0 };
HMODULE lib = NULL, temp = NULL;
sip.pfGet = CRYPT_LoadSIPFunc(pgSubject, szGetSigned, &lib);
if (!sip.pfGet)
goto error;
sip.pfPut = CRYPT_LoadSIPFunc(pgSubject, szPutSigned, &temp);
if (!sip.pfPut || temp != lib)
goto error;
FreeLibrary(temp);
sip.pfCreate = CRYPT_LoadSIPFunc(pgSubject, szCreate, &temp);
if (!sip.pfCreate || temp != lib)
goto error;
FreeLibrary(temp);
sip.pfVerify = CRYPT_LoadSIPFunc(pgSubject, szVerify, &temp);
if (!sip.pfVerify || temp != lib)
goto error;
FreeLibrary(temp);
sip.pfRemove = CRYPT_LoadSIPFunc(pgSubject, szRemoveSigned, &temp);
if (!sip.pfRemove || temp != lib)
goto error;
FreeLibrary(temp);
sip.hSIP = lib;
CRYPT_CacheSIP(pgSubject, &sip);
return TRUE;
error:
FreeLibrary(lib);
FreeLibrary(temp);
SetLastError(TRUST_E_SUBJECT_FORM_UNKNOWN);
return FALSE;
}
/***********************************************************************
* CryptSIPLoad (CRYPT32.@)
*
* Load some internal crypt32 functions into a SIP_DISPATCH_INFO structure.
*
* PARAMS
* pgSubject [I] The GUID.
* dwFlags [I] Flags.
* pSipDispatch [I] The loaded functions.
*
* RETURNS
* Success: TRUE. pSipDispatch contains the functions.
* Failure: FALSE. (Look at GetLastError()).
*
* NOTES
* CryptSIPLoad uses caching for the list of GUIDs and whether a SIP is
* already loaded.
*
* An application calls CryptSipLoad which will return a structure with the
* function addresses of some internal crypt32 functions. The application will
* then call these functions which will be forwarded to the appropriate SIP.
*
* CryptSIPLoad will load the needed SIP but doesn't unload this dll. The unloading
* is done when crypt32 is unloaded.
*/
BOOL WINAPI CryptSIPLoad
(const GUID *pgSubject, DWORD dwFlags, SIP_DISPATCH_INFO *pSipDispatch)
{
TRACE("(%s %d %p)\n", debugstr_guid(pgSubject), dwFlags, pSipDispatch);
if (!pgSubject || dwFlags != 0 || !pSipDispatch)
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
if (!CRYPT_IsSIPCached(pgSubject) && !CRYPT_LoadSIP(pgSubject))
return FALSE;
pSipDispatch->hSIP = NULL;
pSipDispatch->pfGet = CryptSIPGetSignedDataMsg;
pSipDispatch->pfPut = CryptSIPPutSignedDataMsg;
pSipDispatch->pfCreate = CryptSIPCreateIndirectData;
pSipDispatch->pfVerify = CryptSIPVerifyIndirectData;
pSipDispatch->pfRemove = CryptSIPRemoveSignedDataMsg;
return TRUE;
}
/***********************************************************************
* CryptSIPCreateIndirectData (CRYPT32.@)
*/
BOOL WINAPI CryptSIPCreateIndirectData(SIP_SUBJECTINFO* pSubjectInfo, DWORD* pcbIndirectData,
SIP_INDIRECT_DATA* pIndirectData)
{
WINE_SIP_PROVIDER *sip;
BOOL ret = FALSE;
TRACE("(%p %p %p)\n", pSubjectInfo, pcbIndirectData, pIndirectData);
if ((sip = CRYPT_GetCachedSIP(pSubjectInfo->pgSubjectType)))
ret = sip->info.pfCreate(pSubjectInfo, pcbIndirectData, pIndirectData);
TRACE("returning %d\n", ret);
return ret;
}
/***********************************************************************
* CryptSIPGetSignedDataMsg (CRYPT32.@)
*/
BOOL WINAPI CryptSIPGetSignedDataMsg(SIP_SUBJECTINFO* pSubjectInfo, DWORD* pdwEncodingType,
DWORD dwIndex, DWORD* pcbSignedDataMsg, BYTE* pbSignedDataMsg)
{
WINE_SIP_PROVIDER *sip;
BOOL ret = FALSE;
TRACE("(%p %p %d %p %p)\n", pSubjectInfo, pdwEncodingType, dwIndex,
pcbSignedDataMsg, pbSignedDataMsg);
if ((sip = CRYPT_GetCachedSIP(pSubjectInfo->pgSubjectType)))
ret = sip->info.pfGet(pSubjectInfo, pdwEncodingType, dwIndex,
pcbSignedDataMsg, pbSignedDataMsg);
TRACE("returning %d\n", ret);
return ret;
}
/***********************************************************************
* CryptSIPPutSignedDataMsg (CRYPT32.@)
*/
BOOL WINAPI CryptSIPPutSignedDataMsg(SIP_SUBJECTINFO* pSubjectInfo, DWORD pdwEncodingType,
DWORD* pdwIndex, DWORD cbSignedDataMsg, BYTE* pbSignedDataMsg)
{
WINE_SIP_PROVIDER *sip;
BOOL ret = FALSE;
TRACE("(%p %d %p %d %p)\n", pSubjectInfo, pdwEncodingType, pdwIndex,
cbSignedDataMsg, pbSignedDataMsg);
if ((sip = CRYPT_GetCachedSIP(pSubjectInfo->pgSubjectType)))
ret = sip->info.pfPut(pSubjectInfo, pdwEncodingType, pdwIndex,
cbSignedDataMsg, pbSignedDataMsg);
TRACE("returning %d\n", ret);
return ret;
}
/***********************************************************************
* CryptSIPRemoveSignedDataMsg (CRYPT32.@)
*/
BOOL WINAPI CryptSIPRemoveSignedDataMsg(SIP_SUBJECTINFO* pSubjectInfo,
DWORD dwIndex)
{
WINE_SIP_PROVIDER *sip;
BOOL ret = FALSE;
TRACE("(%p %d)\n", pSubjectInfo, dwIndex);
if ((sip = CRYPT_GetCachedSIP(pSubjectInfo->pgSubjectType)))
ret = sip->info.pfRemove(pSubjectInfo, dwIndex);
TRACE("returning %d\n", ret);
return ret;
}
/***********************************************************************
* CryptSIPVerifyIndirectData (CRYPT32.@)
*/
BOOL WINAPI CryptSIPVerifyIndirectData(SIP_SUBJECTINFO* pSubjectInfo,
SIP_INDIRECT_DATA* pIndirectData)
{
WINE_SIP_PROVIDER *sip;
BOOL ret = FALSE;
TRACE("(%p %p)\n", pSubjectInfo, pIndirectData);
if ((sip = CRYPT_GetCachedSIP(pSubjectInfo->pgSubjectType)))
ret = sip->info.pfVerify(pSubjectInfo, pIndirectData);
TRACE("returning %d\n", ret);
return ret;
}
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