1 #include "stdafx.h"
2 #include <windows.h>
3 #include <Wintrust.h>
4 #include <SoftPub.h>
5 #include <Mscat.h>
6
7 #pragma comment(lib,"WinTrust.lib")
8
9 BOOL CheckFileTrust( LPCWSTR lpFileName )
10 {
11 BOOL bRet = FALSE;
12 WINTRUST_DATA wd = { 0 };
13 WINTRUST_FILE_INFO wfi = { 0 };
14 WINTRUST_CATALOG_INFO wci = { 0 };
15 CATALOG_INFO ci = { 0 };
16
17 HCATADMIN hCatAdmin = NULL;
18 if ( !CryptCATAdminAcquireContext( &hCatAdmin, NULL, 0 ) )
19 {
20 return FALSE;
21 }
22
23 HANDLE hFile = CreateFileW( lpFileName, GENERIC_READ, FILE_SHARE_READ,
24 NULL, OPEN_EXISTING, 0, NULL );
25 if ( INVALID_HANDLE_VALUE == hFile )
26 {
27 CryptCATAdminReleaseContext( hCatAdmin, 0 );
28 return FALSE;
29 }
30
31 DWORD dwCnt = 100;
32 BYTE byHash[100];
33 CryptCATAdminCalcHashFromFileHandle( hFile, &dwCnt, byHash, 0 );
34 CloseHandle( hFile );
35
36 LPWSTR pszMemberTag = new WCHAR[dwCnt * 2 + 1];
37 for ( DWORD dw = 0; dw < dwCnt; ++dw )
38 {
39 wsprintfW( &pszMemberTag[dw * 2], L"%02X", byHash[dw] );
40 }
41
42 HCATINFO hCatInfo = CryptCATAdminEnumCatalogFromHash( hCatAdmin,
43 byHash, dwCnt, 0, NULL );
44 if ( NULL == hCatInfo )
45 {
46 wfi.cbStruct = sizeof( WINTRUST_FILE_INFO );
47 wfi.pcwszFilePath = lpFileName;
48 wfi.hFile = NULL;
49 wfi.pgKnownSubject = NULL;
50
51 wd.cbStruct = sizeof( WINTRUST_DATA );
52 wd.dwUnionChoice = WTD_CHOICE_FILE;
53 wd.pFile = &wfi;
54 wd.dwUIChoice = WTD_UI_NONE;
55 wd.fdwRevocationChecks = WTD_REVOKE_NONE;
56 wd.dwStateAction = WTD_STATEACTION_IGNORE;
57 wd.dwProvFlags = WTD_SAFER_FLAG;
58 wd.hWVTStateData = NULL;
59 wd.pwszURLReference = NULL;
60 }
61 else
62 {
63 CryptCATCatalogInfoFromContext( hCatInfo, &ci, 0 );
64 wci.cbStruct = sizeof( WINTRUST_CATALOG_INFO );
65 wci.pcwszCatalogFilePath = ci.wszCatalogFile;
66 wci.pcwszMemberFilePath = lpFileName;
67 wci.pcwszMemberTag = pszMemberTag;
68
69 wd.cbStruct = sizeof( WINTRUST_DATA );
70 wd.dwUnionChoice = WTD_CHOICE_CATALOG;
71 wd.pCatalog = &wci;
72 wd.dwUIChoice = WTD_UI_NONE;
73 wd.fdwRevocationChecks = WTD_STATEACTION_VERIFY;
74 wd.dwProvFlags = 0;
75 wd.hWVTStateData = NULL;
76 wd.pwszURLReference = NULL;
77 }
78 GUID action = WINTRUST_ACTION_GENERIC_VERIFY_V2;
79 HRESULT hr = WinVerifyTrust( NULL, &action, &wd );
80 bRet = SUCCEEDED( hr );
81
82 if ( NULL != hCatInfo )
83 {
84 CryptCATAdminReleaseContext( hCatInfo, 0 );
85 }
86 CryptCATAdminReleaseCatalogContext( hCatAdmin, hCatInfo, 0 );
87 delete[] pszMemberTag;
88 return bRet;
89 }
