Something went wrong. Try again.
Reactos
Something went wrong. Try again.
2.0 kB · 61 lines
C++
at listview
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162/* * PROJECT: ReactOS Applications Manager * LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later) * PURPOSE: Various integrity check mechanisms * COPYRIGHT: Copyright Ismael Ferreras Morezuelas (swyterzone+ros@gmail.com) * Copyright 2016 Mark Jansen <mark.jansen@reactos.org> */
#include "rapps.h"
#include <sha1.h>
BOOLVerifyInteg(LPCWSTR lpSHA1Hash, LPCWSTR lpFileName){ BOOL ret = FALSE;
/* first off, does it exist at all? */ HANDLE file = CreateFileW(lpFileName, GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_READONLY, NULL);
if (file == INVALID_HANDLE_VALUE) return FALSE;
/* let's grab the actual file size to organize the mmap'ing rounds */ LARGE_INTEGER size; GetFileSizeEx(file, &size);
/* retrieve a handle to map the file contents to memory */ HANDLE map = CreateFileMappingW(file, NULL, PAGE_READONLY, 0, 0, NULL); if (map) { /* map that thing in address space */ const unsigned char *file_map = static_cast<const unsigned char *>(MapViewOfFile(map, FILE_MAP_READ, 0, 0, 0)); if (file_map) { SHA_CTX ctx; /* initialize the SHA-1 context */ A_SHAInit(&ctx);
/* feed the data to the cookie monster */ A_SHAUpdate(&ctx, file_map, size.LowPart);
/* cool, we don't need this anymore */ UnmapViewOfFile(file_map);
/* we're done, compute the final hash */ ULONG sha[5]; A_SHAFinal(&ctx, sha);
WCHAR buf[(sizeof(sha) * 2) + 1]; for (UINT i = 0; i < sizeof(sha); i++) swprintf(buf + 2 * i, L"%02x", ((unsigned char *)sha)[i]); /* does the resulting SHA1 match with the provided one? */ if (!_wcsicmp(buf, lpSHA1Hash)) ret = TRUE; } CloseHandle(map); } CloseHandle(file); return ret;}