From: ajkhoury aidankhoury@gmail.com
This commit adds implementations for the GetFilePatchSignature* routines, using NormalizeFileForPatchSignature for the bulk of the work. --- dlls/mspatcha/Makefile.in | 1 + dlls/mspatcha/md5.c | 31 +++++ dlls/mspatcha/md5.h | 21 +++ dlls/mspatcha/mspatcha_main.c | 234 +++++++++++++++++++++++++++++----- include/patchapi.h | 1 + 5 files changed, 257 insertions(+), 31 deletions(-) create mode 100644 dlls/mspatcha/md5.c create mode 100644 dlls/mspatcha/md5.h
diff --git a/dlls/mspatcha/Makefile.in b/dlls/mspatcha/Makefile.in index 9358e7a9a2a..081534f6b95 100644 --- a/dlls/mspatcha/Makefile.in +++ b/dlls/mspatcha/Makefile.in @@ -5,6 +5,7 @@ EXTRADLLFLAGS = -Wb,--prefer-native
C_SRCS = \ lzxd_dec.c \ + md5.c \ mspatcha_main.c \ pa19.c \ pecoff.c diff --git a/dlls/mspatcha/md5.c b/dlls/mspatcha/md5.c new file mode 100644 index 00000000000..8c51d84eccc --- /dev/null +++ b/dlls/mspatcha/md5.c @@ -0,0 +1,31 @@ + +/* MD5 algorithm + * + * This code is derived from ntdll/crypt.c + */ + +#include <string.h> +#include <basetsd.h> /* for WORDS_BIGENDIAN */ +#include <windef.h> + +#include "md5.h" + +struct md5_ctx { + unsigned int i[2]; + unsigned int buf[4]; + unsigned char in[64]; + unsigned char digest[MD5DIGESTLEN]; +}; + +extern void WINAPI MD5Init( struct md5_ctx * ); +extern void WINAPI MD5Update( struct md5_ctx *, const unsigned char *, unsigned int ); +extern void WINAPI MD5Final( struct md5_ctx * ); + +void ComputeMD5Hash(const void *data, unsigned int len, unsigned char digest[MD5DIGESTLEN]) +{ + struct md5_ctx ctx; + MD5Init(&ctx); + MD5Update(&ctx, data, len); + MD5Final(&ctx); + memcpy(digest, ctx.digest, MD5DIGESTLEN); +} diff --git a/dlls/mspatcha/md5.h b/dlls/mspatcha/md5.h new file mode 100644 index 00000000000..41408ea8194 --- /dev/null +++ b/dlls/mspatcha/md5.h @@ -0,0 +1,21 @@ +/* + * MD5 algorithm + * + * 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 + */ + +#define MD5DIGESTLEN 16 + +void ComputeMD5Hash(const void *data, unsigned int len, unsigned char digest[MD5DIGESTLEN]); diff --git a/dlls/mspatcha/mspatcha_main.c b/dlls/mspatcha/mspatcha_main.c index 67f62104138..78b8c5bb85c 100644 --- a/dlls/mspatcha/mspatcha_main.c +++ b/dlls/mspatcha/mspatcha_main.c @@ -25,8 +25,6 @@ * used or the old file exceeds the lzxd window size. * - APPLY_OPTION_FAIL_IF_CLOSE is ignored. Normalization of 32-bit PE files * is required for checking this. - * - GetFilePatchSignature* and NormalizeFileForPatchSignature require a - * solution to the above 32-bit exe problem. */
#include <stdarg.h> @@ -34,9 +32,11 @@ #include "windef.h" #include "winbase.h" #include "winnls.h" +#include "winternl.h" #include "patchapi.h" #include "wine/debug.h"
+#include "md5.h" #include "pa19.h"
WINE_DEFAULT_DEBUG_CHANNEL(mspatcha); @@ -54,6 +54,30 @@ static WCHAR *strdupAW(const char *src) return dst; }
+static inline char nibble2char(unsigned char n) +{ + return (char)((n) < 0xA) ? ('0' + (n)) : ('a' + ((n) - 0xA)); +} + +static inline void bin2hex(const unsigned char *bin, char *hexstr, size_t maxcount) +{ + size_t i, n = 0; + for (i = 0; i < maxcount; i++) { + hexstr[n++] = nibble2char((bin[i] >> 4) & 0xf); + hexstr[n++] = nibble2char((bin[i] & 0xf)); + } + hexstr[n] = '\0'; +} + +static inline void dword2hex(unsigned int value, char *hexstr) +{ + size_t i; + for (i = 8; i > 0; --i, value >>= 4) { + hexstr[i-1] = nibble2char((value & 0xf)); + } + hexstr[8] = '\0'; +} + /***************************************************** * TestApplyPatchToFileA (MSPATCHA.@) */ @@ -208,54 +232,202 @@ BOOL WINAPI ApplyPatchToFileByBuffers(PBYTE patch_file_view, ULONG patch_file_s /***************************************************** * GetFilePatchSignatureA (MSPATCHA.@) */ -BOOL WINAPI GetFilePatchSignatureA(LPCSTR filename, ULONG flags, PVOID data, ULONG ignore_range_count, - PPATCH_IGNORE_RANGE ignore_range, ULONG retain_range_count, - PPATCH_RETAIN_RANGE retain_range, ULONG bufsize, LPSTR buffer) +BOOL WINAPI GetFilePatchSignatureA( + LPCSTR filename, ULONG option_flags, PVOID option_data, + ULONG ignore_range_count, PPATCH_IGNORE_RANGE ignore_range_array, + ULONG retain_range_count, PPATCH_RETAIN_RANGE retain_range_array, + ULONG signature_bufsize, LPSTR signature_buf) { - FIXME("stub - %s, %lx, %p, %lu, %p, %lu, %p, %lu, %p\n", debugstr_a(filename), flags, data, - ignore_range_count, ignore_range, retain_range_count, retain_range, bufsize, buffer); - SetLastError(ERROR_CALL_NOT_IMPLEMENTED); - return FALSE; + BOOL success = FALSE; + HANDLE file_hndl; + + file_hndl = CreateFileA(filename, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, + NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL); + if (file_hndl != INVALID_HANDLE_VALUE) + { + success = GetFilePatchSignatureByHandle( + file_hndl, option_flags,option_data, + ignore_range_count, ignore_range_array, + retain_range_count, retain_range_array, + signature_bufsize, signature_buf); + + CloseHandle(file_hndl); + } + + return success; }
/***************************************************** * GetFilePatchSignatureW (MSPATCHA.@) */ -BOOL WINAPI GetFilePatchSignatureW(LPCWSTR filename, ULONG flags, PVOID data, ULONG ignore_range_count, - PPATCH_IGNORE_RANGE ignore_range, ULONG retain_range_count, - PPATCH_RETAIN_RANGE retain_range, ULONG bufsize, LPWSTR buffer) +BOOL WINAPI GetFilePatchSignatureW( + LPCWSTR filename, ULONG option_flags, PVOID option_data, + ULONG ignore_range_count, PPATCH_IGNORE_RANGE ignore_range_array, + ULONG retain_range_count, PPATCH_RETAIN_RANGE retain_range_array, + ULONG signature_bufsize, LPWSTR signature_buf) { - FIXME("stub - %s, %lx, %p, %lu, %p, %lu, %p, %lu, %p\n", debugstr_w(filename), flags, data, - ignore_range_count, ignore_range, retain_range_count, retain_range, bufsize, buffer); - SetLastError(ERROR_CALL_NOT_IMPLEMENTED); - return FALSE; + BOOL success = FALSE; + HANDLE file_hndl; + char ascii_buffer[40]; + + file_hndl = CreateFileW(filename, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, + NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL); + if (file_hndl != INVALID_HANDLE_VALUE) + { + success = GetFilePatchSignatureByHandle( + file_hndl, option_flags,option_data, + ignore_range_count, ignore_range_array, + retain_range_count, retain_range_array, + sizeof(ascii_buffer), ascii_buffer); + + if (success) { + if ((signature_bufsize / sizeof(WCHAR)) >= (strlen(ascii_buffer) + 1)) { + success = MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, + ascii_buffer, -1, signature_buf, signature_bufsize / sizeof(WCHAR)) != 0; + + } else { + SetLastError(ERROR_INSUFFICIENT_BUFFER); + success = FALSE; + } + } + + CloseHandle(file_hndl); + } + + return success; }
/***************************************************** * GetFilePatchSignatureByHandle (MSPATCHA.@) */ -BOOL WINAPI GetFilePatchSignatureByHandle(HANDLE handle, ULONG flags, PVOID options, ULONG ignore_range_count, - PPATCH_IGNORE_RANGE ignore_range, ULONG retain_range_count, - PPATCH_RETAIN_RANGE retain_range, ULONG bufsize, LPSTR buffer) +BOOL WINAPI GetFilePatchSignatureByHandle( + HANDLE file_handle, ULONG option_flags, PVOID option_data, + ULONG ignore_range_count, PPATCH_IGNORE_RANGE ignore_range_array, + ULONG retain_range_count, PPATCH_RETAIN_RANGE retain_range_array, + ULONG signature_bufsize, LPSTR signature_buf) { - FIXME("stub - %p, %lx, %p, %lu, %p, %lu, %p, %lu, %p\n", handle, flags, options, - ignore_range_count, ignore_range, retain_range_count, retain_range, bufsize, buffer); - SetLastError(ERROR_CALL_NOT_IMPLEMENTED); - return FALSE; + BOOL success = FALSE; + HANDLE file_writable_mapping = NULL; + PVOID file_writable_buf = NULL; + DWORD file_size = 0; + DWORD file_size_hi = 0; + + file_size = GetFileSize(file_handle, &file_size_hi); + + /* Cannot support files over 4GiB in size. */ + if (file_size == 0xFFFFFFFF) { + if (GetLastError() == ERROR_SUCCESS) { + SetLastError(ERROR_FILE_TOO_LARGE); + } + return FALSE; + + } else if (file_size_hi != 0) { + SetLastError(ERROR_FILE_TOO_LARGE); + return FALSE; + } + + /* No file size? Nothing to do; return success.*/ + if (file_size == 0) { + return TRUE; + } + + /* Create a writable file mapping for the given file handle. */ + file_writable_mapping = CreateFileMappingA(file_handle, NULL, PAGE_WRITECOPY, 0, 0, NULL); + if (file_writable_mapping) { + file_writable_buf = MapViewOfFile(file_writable_mapping, FILE_MAP_COPY, 0, 0, 0); + CloseHandle(file_writable_mapping); + if (file_writable_buf) { + success = TRUE; + } + } + + if (success) + { + /* Get the file patch signature for the mapped file. */ + success = GetFilePatchSignatureByBuffer( + file_writable_buf, file_size, + option_flags, option_data, + ignore_range_count, ignore_range_array, + retain_range_count, retain_range_array, + signature_bufsize, signature_buf); + + /* Unmapped the writable file buffer. */ + UnmapViewOfFile(file_writable_buf); + } + + /* Handle errors appropriately. */ + if (!success) { + if (GetLastError() == ERROR_SUCCESS) { + SetLastError(ERROR_EXTENDED_ERROR); + } + } + + return success; }
/***************************************************** * GetFilePatchSignatureByBuffer (MSPATCHA.@) */ -BOOL WINAPI GetFilePatchSignatureByBuffer(PBYTE file_buf, ULONG file_size, ULONG flags, PVOID options, - ULONG ignore_range_count, PPATCH_IGNORE_RANGE ignore_range, - ULONG retain_range_count, PPATCH_RETAIN_RANGE retain_range, - ULONG bufsize, LPSTR buffer) +BOOL WINAPI GetFilePatchSignatureByBuffer( + PBYTE file_buffer, ULONG file_size, + ULONG option_flags, PVOID option_data, + ULONG ignore_range_count, PPATCH_IGNORE_RANGE ignore_range_array, + ULONG retain_range_count, PPATCH_RETAIN_RANGE retain_range_array, + ULONG signature_bufsize, LPSTR signature_buf) { - FIXME("stub - %p, %lu, %lx, %p, %lu, %p, %lu, %p, %lu, %p\n", file_buf, file_size, flags, options, - ignore_range_count, ignore_range, retain_range_count, retain_range, bufsize, buffer); - SetLastError(ERROR_CALL_NOT_IMPLEMENTED); - return FALSE; + BOOL success; + INT result; + UINT32 filecrc; + unsigned char filehash[MD5DIGESTLEN]; + + TRACE("getting file patch signature for buffer 0x%p of size 0x%lX", file_buffer, file_size); + + /* Normalize the given mapped file image. */ + result = NormalizeFileForPatchSignature( + file_buffer, file_size, + option_flags, option_data, + 0x10000000, 0x10000000, + ignore_range_count, ignore_range_array, + retain_range_count, retain_range_array); + + if (result == NORMALIZE_RESULT_FAILURE) { + success = FALSE; + } else { + success = TRUE; + } + + if (success) { + if (option_flags & PATCH_OPTION_SIGNATURE_MD5) { + if (signature_bufsize >= (MD5DIGESTLEN*2+1)) { + /* calculate MD5 hash of file buffer. */ + ComputeMD5Hash(file_buffer, (unsigned int)file_size, filehash); + bin2hex(filehash, signature_buf, MD5DIGESTLEN); + + } else { + SetLastError(ERROR_INSUFFICIENT_BUFFER); + success = FALSE; + } + + } else { + if (signature_bufsize >= (sizeof(UINT32)*2+1)) { + /* calculate CRC32 checksum of file buffer. */ + filecrc = RtlComputeCrc32(0, file_buffer, file_size); + dword2hex(filecrc, signature_buf); + + } else { + SetLastError(ERROR_INSUFFICIENT_BUFFER); + success = FALSE; + } + } + } + + if (!success) { + if (GetLastError() == ERROR_SUCCESS) { + SetLastError(ERROR_EXTENDED_ERROR); + } + } + + return success; }
/***************************************************** diff --git a/include/patchapi.h b/include/patchapi.h index 1ccdf9dec70..95401545688 100644 --- a/include/patchapi.h +++ b/include/patchapi.h @@ -36,6 +36,7 @@ extern "C" { #define PATCH_OPTION_NO_CHECKSUM 0x00200000 #define PATCH_OPTION_NO_RESTIMEFIX 0x00400000 #define PATCH_OPTION_NO_TIMESTAMP 0x00800000 +#define PATCH_OPTION_SIGNATURE_MD5 0x01000000 #define PATCH_OPTION_INTERLEAVE_FILES 0x40000000 #define PATCH_OPTION_RESERVED1 0x80000000