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path: root/plugins/PluginUpdater/src/checksum.cpp
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Diffstat (limited to 'plugins/PluginUpdater/src/checksum.cpp')
-rw-r--r--plugins/PluginUpdater/src/checksum.cpp81
1 files changed, 32 insertions, 49 deletions
diff --git a/plugins/PluginUpdater/src/checksum.cpp b/plugins/PluginUpdater/src/checksum.cpp
index ba895515b4..5a524b7d1b 100644
--- a/plugins/PluginUpdater/src/checksum.cpp
+++ b/plugins/PluginUpdater/src/checksum.cpp
@@ -30,7 +30,7 @@ struct MFileMapping
hFile = CreateFile(ptszFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
if (hFile != INVALID_HANDLE_VALUE)
- hMap = CreateFileMapping( hFile, NULL, PAGE_WRITECOPY, 0, 0, NULL);
+ hMap = CreateFileMapping(hFile, NULL, PAGE_WRITECOPY, 0, 0, NULL);
if (hMap)
ptr = (PBYTE)MapViewOfFile(hMap, FILE_MAP_COPY, 0, 0, 0);
}
@@ -53,7 +53,7 @@ static void PatchResourcesDirectory(PIMAGE_RESOURCE_DIRECTORY pIRD, BYTE *pBase)
static void PatchResourceEntry(PIMAGE_RESOURCE_DIRECTORY_ENTRY pIRDE, BYTE *pBase)
{
if (pIRDE->DataIsDirectory)
- PatchResourcesDirectory( PIMAGE_RESOURCE_DIRECTORY(pBase + pIRDE->OffsetToDirectory), pBase);
+ PatchResourcesDirectory(PIMAGE_RESOURCE_DIRECTORY(pBase + pIRDE->OffsetToDirectory), pBase);
}
static void PatchResourcesDirectory(PIMAGE_RESOURCE_DIRECTORY pIRD, PBYTE pBase)
@@ -61,11 +61,11 @@ static void PatchResourcesDirectory(PIMAGE_RESOURCE_DIRECTORY pIRD, PBYTE pBase)
UINT i;
pIRD->TimeDateStamp = 0;
- PIMAGE_RESOURCE_DIRECTORY_ENTRY pIRDE = PIMAGE_RESOURCE_DIRECTORY_ENTRY(pIRD+1);
- for ( i=0; i < pIRD->NumberOfNamedEntries; i++, pIRDE++ )
+ PIMAGE_RESOURCE_DIRECTORY_ENTRY pIRDE = PIMAGE_RESOURCE_DIRECTORY_ENTRY(pIRD + 1);
+ for (i = 0; i < pIRD->NumberOfNamedEntries; i++, pIRDE++)
PatchResourceEntry(pIRDE, pBase);
- for ( i=0; i < pIRD->NumberOfIdEntries; i++, pIRDE++ )
+ for (i = 0; i < pIRD->NumberOfIdEntries; i++, pIRDE++)
PatchResourceEntry(pIRDE, pBase);
}
@@ -79,7 +79,7 @@ int CalculateModuleHash(const wchar_t *filename, char *szDest)
return RESULT_READERROR;
// check minimum and maximum size
- DWORD hsize = 0, filesize = GetFileSize(map.hFile, &hsize );
+ DWORD hsize = 0, filesize = GetFileSize(map.hFile, &hsize);
if (!filesize || filesize == INVALID_FILE_SIZE || hsize)
return RESULT_INVALID;
@@ -97,7 +97,7 @@ LBL_NotPE:
}
else {
PIMAGE_NT_HEADERS pINTH = (PIMAGE_NT_HEADERS)(map.ptr + pIDH->e_lfanew);
- if ((PBYTE)pINTH + sizeof(IMAGE_NT_HEADERS) >= map.ptr + filesize )
+ if ((PBYTE)pINTH + sizeof(IMAGE_NT_HEADERS) >= map.ptr + filesize)
return RESULT_CORRUPTED;
if (pINTH->Signature != IMAGE_NT_SIGNATURE)
goto LBL_NotPE;
@@ -106,27 +106,25 @@ LBL_NotPE:
DWORD sections = pINTH->FileHeader.NumberOfSections;
if (!sections)
return RESULT_INVALID;
+ PIMAGE_DATA_DIRECTORY pIDD = 0;
+ PIMAGE_DEBUG_DIRECTORY pDBG = 0;
+ PBYTE pRealloc = nullptr;
+ ULONGLONG base = 0;
// try to found correct offset independent of architectures
DWORD offset = pIDH->e_lfanew + pINTH->FileHeader.SizeOfOptionalHeader + sizeof(IMAGE_NT_HEADERS) - sizeof(IMAGE_OPTIONAL_HEADER);
- PBYTE pRealloc = 0;
- PIMAGE_DEBUG_DIRECTORY pDBG = 0;
- PIMAGE_DATA_DIRECTORY pIDD;
- ULONGLONG base;
if ((machine == IMAGE_FILE_MACHINE_I386) &&
(pINTH->FileHeader.SizeOfOptionalHeader >= sizeof(IMAGE_OPTIONAL_HEADER32)) &&
- (pINTH->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC))
- {
+ (pINTH->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC)) {
pIDD = (PIMAGE_DATA_DIRECTORY)((PBYTE)pINTH + offsetof(IMAGE_NT_HEADERS32, OptionalHeader.DataDirectory));
- base = *(DWORD*)((PBYTE)pINTH + offsetof( IMAGE_NT_HEADERS32, OptionalHeader.ImageBase ));
+ base = *(DWORD*)((PBYTE)pINTH + offsetof(IMAGE_NT_HEADERS32, OptionalHeader.ImageBase));
}
else if ((machine == IMAGE_FILE_MACHINE_AMD64) &&
(pINTH->FileHeader.SizeOfOptionalHeader >= sizeof(IMAGE_OPTIONAL_HEADER64)) &&
- (pINTH->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC))
- {
+ (pINTH->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC)) {
pIDD = (PIMAGE_DATA_DIRECTORY)((PBYTE)pINTH + offsetof(IMAGE_NT_HEADERS64, OptionalHeader.DataDirectory));
- base = *(ULONGLONG*)((PBYTE)pINTH + offsetof( IMAGE_NT_HEADERS64, OptionalHeader.ImageBase ));
+ base = *(ULONGLONG*)((PBYTE)pINTH + offsetof(IMAGE_NT_HEADERS64, OptionalHeader.ImageBase));
}
else return RESULT_CORRUPTED;
@@ -147,54 +145,43 @@ LBL_NotPE:
DWORD relocSize = pIDD[IMAGE_DIRECTORY_ENTRY_BASERELOC].Size;
// verify image integrity
- for (DWORD idx=0; idx < sections; idx++) {
+ for (DWORD idx = 0; idx < sections; idx++) {
PIMAGE_SECTION_HEADER pISH = (PIMAGE_SECTION_HEADER)(map.ptr + offset + idx * sizeof(IMAGE_SECTION_HEADER));
if (((PBYTE)pISH + sizeof(IMAGE_SECTION_HEADER) > map.ptr + filesize) || (pISH->PointerToRawData + pISH->SizeOfRawData > filesize))
return RESULT_CORRUPTED;
// erase timestamp
- if (( dbgSize >= sizeof(IMAGE_DEBUG_DIRECTORY)) &&
- (dbgAddr >= pISH->VirtualAddress) &&
- (dbgAddr + dbgSize <= pISH->VirtualAddress + pISH->SizeOfRawData))
- {
+ if ((dbgSize >= sizeof(IMAGE_DEBUG_DIRECTORY)) && (dbgAddr >= pISH->VirtualAddress) && (dbgAddr + dbgSize <= pISH->VirtualAddress + pISH->SizeOfRawData)) {
DWORD shift = dbgAddr - pISH->VirtualAddress;
pDBG = (PIMAGE_DEBUG_DIRECTORY)(map.ptr + shift + pISH->PointerToRawData);
- pDBG->TimeDateStamp = 0;
+ for (int i = dbgSize / sizeof(IMAGE_DEBUG_DIRECTORY); i > 0; i--)
+ pDBG[i - 1].TimeDateStamp = 0;
}
// erase export timestamp
- if ((expSize >= sizeof(IMAGE_EXPORT_DIRECTORY)) &&
- (expAddr >= pISH->VirtualAddress) &&
- (expAddr + expSize <= pISH->VirtualAddress + pISH->SizeOfRawData))
- {
+ if ((expSize >= sizeof(IMAGE_EXPORT_DIRECTORY)) && (expAddr >= pISH->VirtualAddress) && (expAddr + expSize <= pISH->VirtualAddress + pISH->SizeOfRawData)) {
DWORD shift = expAddr - pISH->VirtualAddress;
PIMAGE_EXPORT_DIRECTORY pEXP = (PIMAGE_EXPORT_DIRECTORY)(map.ptr + shift + pISH->PointerToRawData);
pEXP->TimeDateStamp = 0;
}
// find realocation table
- if ((relocSize >= sizeof(IMAGE_BASE_RELOCATION)) &&
- (relocAddr >= pISH->VirtualAddress) &&
- (relocAddr + relocSize <= pISH->VirtualAddress + pISH->SizeOfRawData))
- {
+ if ((relocSize >= sizeof(IMAGE_BASE_RELOCATION)) && (relocAddr >= pISH->VirtualAddress) && (relocAddr + relocSize <= pISH->VirtualAddress + pISH->SizeOfRawData)) {
DWORD shift = relocAddr - pISH->VirtualAddress;
pRealloc = map.ptr + shift + pISH->PointerToRawData;
}
}
- for (size_t idx=0; idx < sections; idx++) {
+ for (size_t idx = 0; idx < sections; idx++) {
PIMAGE_SECTION_HEADER pISH = (PIMAGE_SECTION_HEADER)(map.ptr + offset + idx * sizeof(IMAGE_SECTION_HEADER));
- if (((PBYTE)pISH + sizeof(IMAGE_SECTION_HEADER) > map.ptr + filesize) || ( pISH->PointerToRawData + pISH->SizeOfRawData > filesize))
+ if (((PBYTE)pISH + sizeof(IMAGE_SECTION_HEADER) > map.ptr + filesize) || (pISH->PointerToRawData + pISH->SizeOfRawData > filesize))
return RESULT_CORRUPTED;
// erase debug information
- if (pDBG && pDBG->SizeOfData > 0 &&
- pDBG->PointerToRawData >= pISH->PointerToRawData &&
- pDBG->PointerToRawData + pDBG->SizeOfData <= pISH->PointerToRawData + pISH->SizeOfRawData)
- {
- memset((map.ptr + pDBG->PointerToRawData), 0, pDBG->SizeOfData);
- }
+ if (pDBG && pDBG->SizeOfData > 0)
+ if (pDBG->PointerToRawData >= pISH->PointerToRawData && pDBG->PointerToRawData + pDBG->SizeOfData <= pISH->PointerToRawData + pISH->SizeOfRawData)
+ ZeroMemory(map.ptr + pDBG->PointerToRawData, pDBG->SizeOfData);
// patch resources
if (resSize > 0 && resAddr >= pISH->VirtualAddress && resAddr + resSize <= pISH->VirtualAddress + pISH->SizeOfRawData) {
@@ -207,28 +194,24 @@ LBL_NotPE:
if (pRealloc) {
DWORD blocklen = relocSize;
PIMAGE_BASE_RELOCATION pIBR = (PIMAGE_BASE_RELOCATION)pRealloc;
-
- while(pIBR) {
- if ((pIBR->VirtualAddress >= pISH->VirtualAddress) &&
- (pIBR->VirtualAddress < pISH->VirtualAddress + pISH->SizeOfRawData) &&
- (pIBR->SizeOfBlock <= blocklen))
- {
+ while (pIBR) {
+ if ((pIBR->VirtualAddress >= pISH->VirtualAddress) && (pIBR->VirtualAddress < pISH->VirtualAddress + pISH->SizeOfRawData) && (pIBR->SizeOfBlock <= blocklen)) {
DWORD shift = pIBR->VirtualAddress - pISH->VirtualAddress + pISH->PointerToRawData;
int len = pIBR->SizeOfBlock - sizeof(IMAGE_BASE_RELOCATION);
PWORD pw = (PWORD)((PBYTE)pIBR + sizeof(IMAGE_BASE_RELOCATION));
- while(len > 0) {
+ while (len > 0) {
DWORD type = *pw >> 12;
DWORD addr = (*pw & 0x0FFF);
PBYTE pAddr = map.ptr + shift + addr;
- switch(type) {
+ switch (type) {
case IMAGE_REL_BASED_HIGHLOW:
if (addr + pIBR->VirtualAddress + sizeof(DWORD) >= pISH->VirtualAddress + pISH->SizeOfRawData) {
len = 0;
break;
}
- *(PDWORD)pAddr = (DWORD)((*(PDWORD)pAddr) - (DWORD)base );
+ *(PDWORD)pAddr = (DWORD)((*(PDWORD)pAddr) - (DWORD)base);
break;
case IMAGE_REL_BASED_DIR64:
@@ -236,7 +219,7 @@ LBL_NotPE:
len = 0;
break;
}
- *(ULONGLONG*)pAddr = (ULONGLONG)((*(ULONGLONG*)pAddr) - base );
+ *(ULONGLONG*)pAddr = (ULONGLONG)((*(ULONGLONG*)pAddr) - base);
break;
case IMAGE_REL_BASED_ABSOLUTE:
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-20 12:31:25 +0000