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DriverLoader: fortmm: Simpify BuildImportTableLibrary() args

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Nodir Temirkhodjaev 2024-01-29 13:28:28 +03:00
parent 5dbf21d947
commit 23db9e7e39
1 changed files with 56 additions and 41 deletions
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97
src/driver/loader/fortmm.c
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@ -25,7 +25,15 @@ typedef struct
const PUCHAR lpData;
DWORD dwSize;
DWORD imageSize;
} FORT_MODULE;
} FORT_MODULE_IMAGE;
typedef struct
{
PUCHAR codeBase;
PIMAGE_IMPORT_DESCRIPTOR importDesc;
LPCSTR libName;
PLOADEDMODULE libModule;
} FORT_MODULE_IMAGE_LIB;
static VOID ZeroDataSectionTable(
PUCHAR pImage, const PIMAGE_NT_HEADERS pNtHeaders, PIMAGE_SECTION_HEADER section)
@ -46,26 +54,26 @@ static VOID ZeroDataSectionTable(
#endif
}
static NTSTATUS CopySectionTable(PUCHAR pImage, const FORT_MODULE m)
static NTSTATUS CopySectionTable(PUCHAR pImage, const FORT_MODULE_IMAGE mi)
{
PIMAGE_SECTION_HEADER section = IMAGE_FIRST_SECTION(m.pNtHeaders);
PIMAGE_SECTION_HEADER section = IMAGE_FIRST_SECTION(mi.pNtHeaders);
const int numberOfSections = m.pNtHeaders->FileHeader.NumberOfSections;
const int numberOfSections = mi.pNtHeaders->FileHeader.NumberOfSections;
for (int i = 0; i < numberOfSections; ++i, ++section) {
const DWORD sectionSize = section->SizeOfRawData;
if (sectionSize == 0) {
ZeroDataSectionTable(pImage, m.pNtHeaders, section);
ZeroDataSectionTable(pImage, mi.pNtHeaders, section);
continue;
}
if (section->VirtualAddress + sectionSize > m.imageSize
|| section->PointerToRawData + sectionSize > m.dwSize)
if (section->VirtualAddress + sectionSize > mi.imageSize
|| section->PointerToRawData + sectionSize > mi.dwSize)
return STATUS_INVALID_IMAGE_FORMAT;
/* Always use position from file to support alignments smaller than page size. */
PUCHAR dest = pImage + section->VirtualAddress;
RtlCopyMemory(dest, m.lpData + section->PointerToRawData, sectionSize);
RtlCopyMemory(dest, mi.lpData + section->PointerToRawData, sectionSize);
/* NOTE: On 64bit systems we truncate to 32bit here but expand
* again later when "PhysicalAddress" is used.
@ -152,19 +160,18 @@ static NTSTATUS PerformBaseRelocation(
}
/* Build the import address table: Library functions. */
static NTSTATUS BuildImportTableLibrary(PFORT_MODULE_IMP moduleImp, PUCHAR codeBase,
const PIMAGE_IMPORT_DESCRIPTOR importDesc, PLOADEDMODULE libModule, LPCSTR libName)
static NTSTATUS BuildImportTableLibrary(PFORT_MODULE_IMP moduleImp, const FORT_MODULE_IMAGE_LIB mil)
{
NTSTATUS status = STATUS_SUCCESS;
ModuleGetProcAddressFallbackProc moduleGetProcAddressFallback =
moduleImp->moduleGetProcAddressFallback;
const DWORD originalFirstThunk = (importDesc->OriginalFirstThunk != 0)
? importDesc->OriginalFirstThunk
: importDesc->FirstThunk;
uintptr_t *thunkRef = (uintptr_t *) (codeBase + originalFirstThunk);
FARPROC *funcRef = (FARPROC *) (codeBase + importDesc->FirstThunk);
const DWORD originalFirstThunk = (mil.importDesc->OriginalFirstThunk != 0)
? mil.importDesc->OriginalFirstThunk
: mil.importDesc->FirstThunk;
uintptr_t *thunkRef = (uintptr_t *) (mil.codeBase + originalFirstThunk);
FARPROC *funcRef = (FARPROC *) (mil.codeBase + mil.importDesc->FirstThunk);
for (; *thunkRef; ++thunkRef, ++funcRef) {
LPCSTR funcName;
@ -172,17 +179,17 @@ static NTSTATUS BuildImportTableLibrary(PFORT_MODULE_IMP moduleImp, PUCHAR codeB
funcName = (LPCSTR) IMAGE_ORDINAL(*thunkRef);
} else {
const PIMAGE_IMPORT_BY_NAME thunkData =
(PIMAGE_IMPORT_BY_NAME) (codeBase + (*thunkRef));
(PIMAGE_IMPORT_BY_NAME) (mil.codeBase + (*thunkRef));
funcName = (LPCSTR) &thunkData->Name;
}
*funcRef = moduleGetProcAddressFallback(moduleImp, libModule, funcName);
*funcRef = moduleGetProcAddressFallback(moduleImp, mil.libModule, funcName);
if (*funcRef == NULL) {
LOG("Loader Module: Error: Procedure Not Found: %s: %s\n", libName, funcName);
LOG("Loader Module: Error: Procedure Not Found: %s: %s\n", mil.libName, funcName);
status = STATUS_PROCEDURE_NOT_FOUND;
} else {
#ifdef FORT_DEBUG
LOG("Loader Module: Import: %s: %s: %p\n", libName, funcName, *funcRef);
LOG("Loader Module: Import: %s: %s: %p\n", mil.libName, funcName, *funcRef);
#endif
}
}
@ -202,6 +209,10 @@ static NTSTATUS BuildImportTableEntries(
PIMAGE_IMPORT_DESCRIPTOR importDesc =
(PIMAGE_IMPORT_DESCRIPTOR) (codeBase + directory->VirtualAddress);
FORT_MODULE_IMAGE_LIB moduleLib = {
.codeBase = codeBase,
};
for (; importDesc != NULL && importDesc->Name != 0; ++importDesc) {
LPCSTR libName = (LPCSTR) (codeBase + importDesc->Name);
@ -214,7 +225,11 @@ static NTSTATUS BuildImportTableEntries(
buildImportTableLibraryBegin(moduleImp, libName);
status = BuildImportTableLibrary(moduleImp, codeBase, importDesc, &libModule, libName);
moduleLib.importDesc = importDesc;
moduleLib.libName = libName;
moduleLib.libModule = &libModule;
status = BuildImportTableLibrary(moduleImp, moduleLib);
if (!NT_SUCCESS(status)) {
LOG("Loader Module: Library Import Error: %s\n", libName);
break;
@ -225,17 +240,17 @@ static NTSTATUS BuildImportTableEntries(
}
/* Build the import address table. */
static NTSTATUS BuildImportTable(PLOADEDMODULE pModule, PIMAGE_NT_HEADERS pHeaders)
static NTSTATUS BuildImportTable(const FORT_MODULE_IMAGE mi)
{
NTSTATUS status;
PIMAGE_DATA_DIRECTORY directory =
&(pHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT]);
&(mi.pNtHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT]);
if (directory->Size == 0)
return STATUS_SUCCESS;
DriverImportsSetupProc driverImportsSetup =
(DriverImportsSetupProc) ModuleGetProcAddress(pModule, "DriverImportsSetup");
(DriverImportsSetupProc) ModuleGetProcAddress(mi.pModule, "DriverImportsSetup");
if (driverImportsSetup == NULL)
return STATUS_DRIVER_ORDINAL_NOT_FOUND;
@ -250,14 +265,14 @@ static NTSTATUS BuildImportTable(PLOADEDMODULE pModule, PIMAGE_NT_HEADERS pHeade
driverImportsSetup(&moduleImp);
status = moduleImp.buildImportTableEntriesBegin(&moduleImp, pModule, pHeaders);
status = moduleImp.buildImportTableEntriesBegin(&moduleImp, mi.pModule, mi.pNtHeaders);
if (!NT_SUCCESS(status))
return status;
if (status == STATUS_ALREADY_COMPLETE) {
status = STATUS_SUCCESS;
} else {
status = BuildImportTableEntries(&moduleImp, pModule->codeBase, directory);
status = BuildImportTableEntries(&moduleImp, mi.pModule->codeBase, directory);
}
moduleImp.buildImportTableEntriesEnd(&moduleImp, status);
@ -332,50 +347,50 @@ inline static BOOL CheckPEHeaderOptionalValid(const PIMAGE_NT_HEADERS pNtHeaders
return CheckPEHeaderSections(pNtHeaders);
}
static BOOL IsPEHeaderValid(const FORT_MODULE m)
static BOOL IsPEHeaderValid(const FORT_MODULE_IMAGE mi)
{
const PIMAGE_DOS_HEADER pDosHeader = (PIMAGE_DOS_HEADER) m.lpData;
const PIMAGE_DOS_HEADER pDosHeader = (PIMAGE_DOS_HEADER) mi.lpData;
/* Check DOS header for valid signature */
if (pDosHeader->e_magic != IMAGE_DOS_SIGNATURE)
return FALSE;
/* Make sure size is at least size of headers */
if (m.dwSize < (sizeof(IMAGE_DOS_HEADER) + sizeof(IMAGE_OPTIONAL_HEADER)))
if (mi.dwSize < (sizeof(IMAGE_DOS_HEADER) + sizeof(IMAGE_OPTIONAL_HEADER)))
return FALSE;
if (m.dwSize < (pDosHeader->e_lfanew + sizeof(IMAGE_NT_HEADERS)))
if (mi.dwSize < (pDosHeader->e_lfanew + sizeof(IMAGE_NT_HEADERS)))
return FALSE;
/* Check for optional headers */
const PIMAGE_NT_HEADERS pNtHeaders =
(PIMAGE_NT_HEADERS) & ((PUCHAR) m.lpData)[pDosHeader->e_lfanew];
(PIMAGE_NT_HEADERS) & ((PUCHAR) mi.lpData)[pDosHeader->e_lfanew];
return CheckPEHeaderOptionalValid(pNtHeaders, m.dwSize);
return CheckPEHeaderOptionalValid(pNtHeaders, mi.dwSize);
}
static NTSTATUS InitializeModuleImage(const FORT_MODULE m)
static NTSTATUS InitializeModuleImage(const FORT_MODULE_IMAGE mi)
{
NTSTATUS status;
#ifdef FORT_DEBUG
LOG("Loader Module: Init Image: SizeOfHeaders=%d EntryPoint=%d ImageBase=%x\n",
m.pNtHeaders->OptionalHeader.SizeOfHeaders,
m.pNtHeaders->OptionalHeader.AddressOfEntryPoint,
m.pNtHeaders->OptionalHeader.ImageBase);
mi.pNtHeaders->OptionalHeader.SizeOfHeaders,
mi.pNtHeaders->OptionalHeader.AddressOfEntryPoint,
mi.pNtHeaders->OptionalHeader.ImageBase);
#endif
PUCHAR pImage = m.pModule->codeBase;
PUCHAR pImage = mi.pModule->codeBase;
/* Copy PE header */
RtlCopyMemory(pImage, m.lpData, m.pNtHeaders->OptionalHeader.SizeOfHeaders);
RtlCopyMemory(pImage, mi.lpData, mi.pNtHeaders->OptionalHeader.SizeOfHeaders);
/* Update position of the image base */
PIMAGE_NT_HEADERS pNtHeaders = GetModuleNtHeaders(pImage);
pNtHeaders->OptionalHeader.ImageBase = (uintptr_t) pImage;
/* Copy section table */
FORT_MODULE newModule = m;
FORT_MODULE_IMAGE newModule = mi;
newModule.pNtHeaders = pNtHeaders;
status = CopySectionTable(pImage, newModule);
@ -383,14 +398,14 @@ static NTSTATUS InitializeModuleImage(const FORT_MODULE m)
return status;
/* Adjust base address of imported data */
const ptrdiff_t locationDelta = pImage - (PUCHAR) m.pNtHeaders->OptionalHeader.ImageBase;
const ptrdiff_t locationDelta = pImage - (PUCHAR) mi.pNtHeaders->OptionalHeader.ImageBase;
if (locationDelta != 0) {
PerformBaseRelocation(pImage, pNtHeaders, locationDelta);
}
/* Adjust function table of imports */
status = BuildImportTable(m.pModule, pNtHeaders);
status = BuildImportTable(newModule);
if (!NT_SUCCESS(status))
return status;
@ -401,7 +416,7 @@ FORT_API NTSTATUS LoadModuleFromMemory(PLOADEDMODULE pModule, const PUCHAR lpDat
{
NTSTATUS status;
FORT_MODULE module = {
FORT_MODULE_IMAGE module = {
.pModule = pModule,
.lpData = lpData,
.dwSize = dwSize,