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authorwolfbeast <mcwerewolf@wolfbeast.com>2019-04-01 13:05:24 +0200
committerwolfbeast <mcwerewolf@wolfbeast.com>2019-04-01 13:05:24 +0200
commitff2f287f82630ab3887d7d5c1e64e5b888ea0beb (patch)
tree4e96cb32aa2320a327024942d247c6b56ef8c199 /toolkit/crashreporter/LoadLibraryRemote.cpp
parentbfc97728065cbbc7f6bbc281b654a2d1e079b48d (diff)
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Remove crashreporter toolkit files.
Resolves #20
Diffstat (limited to 'toolkit/crashreporter/LoadLibraryRemote.cpp')
-rw-r--r--toolkit/crashreporter/LoadLibraryRemote.cpp454
1 files changed, 0 insertions, 454 deletions
diff --git a/toolkit/crashreporter/LoadLibraryRemote.cpp b/toolkit/crashreporter/LoadLibraryRemote.cpp
deleted file mode 100644
index f22a6220f..000000000
--- a/toolkit/crashreporter/LoadLibraryRemote.cpp
+++ /dev/null
@@ -1,454 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#ifndef __GNUC__
-// disable warnings about pointer <-> DWORD conversions
-#pragma warning( disable : 4311 4312 )
-#endif
-
-#ifdef _WIN64
-#define POINTER_TYPE ULONGLONG
-#else
-#define POINTER_TYPE DWORD
-#endif
-
-#include <windows.h>
-#include <winnt.h>
-#include <stdlib.h>
-#ifdef DEBUG_OUTPUT
-#include <stdio.h>
-#endif
-
-#include "nsWindowsHelpers.h"
-
-typedef const unsigned char* FileView;
-
-template<>
-class nsAutoRefTraits<FileView>
-{
-public:
- typedef FileView RawRef;
- static FileView Void()
- {
- return nullptr;
- }
-
- static void Release(RawRef aView)
- {
- if (nullptr != aView)
- UnmapViewOfFile(aView);
- }
-};
-
-#ifndef IMAGE_SIZEOF_BASE_RELOCATION
-// Vista SDKs no longer define IMAGE_SIZEOF_BASE_RELOCATION!?
-#define IMAGE_SIZEOF_BASE_RELOCATION (sizeof(IMAGE_BASE_RELOCATION))
-#endif
-
-#include "LoadLibraryRemote.h"
-
-typedef struct {
- PIMAGE_NT_HEADERS headers;
- unsigned char *localCodeBase;
- unsigned char *remoteCodeBase;
- HMODULE *modules;
- int numModules;
-} MEMORYMODULE, *PMEMORYMODULE;
-
-typedef BOOL (WINAPI *DllEntryProc)(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved);
-
-#define GET_HEADER_DICTIONARY(module, idx) &(module)->headers->OptionalHeader.DataDirectory[idx]
-
-#ifdef DEBUG_OUTPUT
-static void
-OutputLastError(const char *msg)
-{
- char* tmp;
- char *tmpmsg;
- FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
- nullptr, GetLastError(),
- MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
- (LPSTR) &tmp, 0, nullptr);
- tmpmsg = (char *)LocalAlloc(LPTR, strlen(msg) + strlen(tmp) + 3);
- sprintf(tmpmsg, "%s: %s", msg, tmp);
- OutputDebugStringA(tmpmsg);
- LocalFree(tmpmsg);
- LocalFree(tmp);
-}
-#endif
-
-static void
-CopySections(const unsigned char *data, PIMAGE_NT_HEADERS old_headers, PMEMORYMODULE module)
-{
- int i;
- unsigned char *codeBase = module->localCodeBase;
- unsigned char *dest;
- PIMAGE_SECTION_HEADER section = IMAGE_FIRST_SECTION(module->headers);
- for (i=0; i<module->headers->FileHeader.NumberOfSections; i++, section++) {
- dest = codeBase + section->VirtualAddress;
- memset(dest, 0, section->Misc.VirtualSize);
- if (section->SizeOfRawData) {
- memcpy(dest, data + section->PointerToRawData, section->SizeOfRawData);
- }
- // section->Misc.PhysicalAddress = (POINTER_TYPE) module->remoteCodeBase + section->VirtualAddress;
- }
-}
-
-static bool
-CopyRegion(HANDLE hRemoteProcess, void* remoteAddress, void* localAddress, DWORD size, DWORD protect)
-{
- if (size > 0) {
- // Copy the data from local->remote and set the memory protection
- if (!VirtualAllocEx(hRemoteProcess, remoteAddress, size, MEM_COMMIT, PAGE_READWRITE))
- return false;
-
- if (!WriteProcessMemory(hRemoteProcess,
- remoteAddress,
- localAddress,
- size,
- nullptr)) {
-#ifdef DEBUG_OUTPUT
- OutputLastError("Error writing remote memory.\n");
-#endif
- return false;
- }
-
- DWORD oldProtect;
- if (VirtualProtectEx(hRemoteProcess, remoteAddress, size, protect, &oldProtect) == 0) {
-#ifdef DEBUG_OUTPUT
- OutputLastError("Error protecting memory page");
-#endif
- return false;
- }
- }
- return true;
-}
-// Protection flags for memory pages (Executable, Readable, Writeable)
-static int ProtectionFlags[2][2][2] = {
- {
- // not executable
- {PAGE_NOACCESS, PAGE_WRITECOPY},
- {PAGE_READONLY, PAGE_READWRITE},
- }, {
- // executable
- {PAGE_EXECUTE, PAGE_EXECUTE_WRITECOPY},
- {PAGE_EXECUTE_READ, PAGE_EXECUTE_READWRITE},
- },
-};
-
-static bool
-FinalizeSections(PMEMORYMODULE module, HANDLE hRemoteProcess)
-{
-#ifdef DEBUG_OUTPUT
- fprintf(stderr, "Finalizing sections: local base %p, remote base %p\n",
- module->localCodeBase, module->remoteCodeBase);
-#endif
-
- int i;
- int numSections = module->headers->FileHeader.NumberOfSections;
-
- if (numSections < 1)
- return false;
-
- PIMAGE_SECTION_HEADER section = IMAGE_FIRST_SECTION(module->headers);
-
- // Copy any data before the first section (i.e. the image header)
- if (!CopyRegion(hRemoteProcess, module->remoteCodeBase, module->localCodeBase, section->VirtualAddress, PAGE_READONLY))
- return false;
-
- // loop through all sections and change access flags
- for (i=0; i<numSections; i++, section++) {
- DWORD protect, size;
- int executable = (section->Characteristics & IMAGE_SCN_MEM_EXECUTE) != 0;
- int readable = (section->Characteristics & IMAGE_SCN_MEM_READ) != 0;
- int writeable = (section->Characteristics & IMAGE_SCN_MEM_WRITE) != 0;
-
- // determine protection flags based on characteristics
- protect = ProtectionFlags[executable][readable][writeable];
- if (section->Characteristics & IMAGE_SCN_MEM_NOT_CACHED) {
- protect |= PAGE_NOCACHE;
- }
-
- void* remoteAddress = module->remoteCodeBase + section->VirtualAddress;
- void* localAddress = module->localCodeBase + section->VirtualAddress;
-
- // determine size of region
- size = section->Misc.VirtualSize;
-#ifdef DEBUG_OUTPUT
- fprintf(stderr, "Copying section %s to %p, size %x, executable %i readable %i writeable %i\n",
- section->Name, remoteAddress, size, executable, readable, writeable);
-#endif
- if (!CopyRegion(hRemoteProcess, remoteAddress, localAddress, size, protect))
- return false;
- }
- return true;
-}
-
-static void
-PerformBaseRelocation(PMEMORYMODULE module, SIZE_T delta)
-{
- DWORD i;
- unsigned char *codeBase = module->localCodeBase;
-
- PIMAGE_DATA_DIRECTORY directory = GET_HEADER_DICTIONARY(module, IMAGE_DIRECTORY_ENTRY_BASERELOC);
- if (directory->Size > 0) {
- PIMAGE_BASE_RELOCATION relocation = (PIMAGE_BASE_RELOCATION) (codeBase + directory->VirtualAddress);
- for (; relocation->VirtualAddress > 0; ) {
- unsigned char *dest = codeBase + relocation->VirtualAddress;
- unsigned short *relInfo = (unsigned short *)((unsigned char *)relocation + IMAGE_SIZEOF_BASE_RELOCATION);
- for (i=0; i<((relocation->SizeOfBlock-IMAGE_SIZEOF_BASE_RELOCATION) / 2); i++, relInfo++) {
- DWORD *patchAddrHL;
-#ifdef _WIN64
- ULONGLONG *patchAddr64;
-#endif
- int type, offset;
-
- // the upper 4 bits define the type of relocation
- type = *relInfo >> 12;
- // the lower 12 bits define the offset
- offset = *relInfo & 0xfff;
-
- switch (type)
- {
- case IMAGE_REL_BASED_ABSOLUTE:
- // skip relocation
- break;
-
- case IMAGE_REL_BASED_HIGHLOW:
- // change complete 32 bit address
- patchAddrHL = (DWORD *) (dest + offset);
- *patchAddrHL += delta;
- break;
-
-#ifdef _WIN64
- case IMAGE_REL_BASED_DIR64:
- patchAddr64 = (ULONGLONG *) (dest + offset);
- *patchAddr64 += delta;
- break;
-#endif
-
- default:
- //printf("Unknown relocation: %d\n", type);
- break;
- }
- }
-
- // advance to next relocation block
- relocation = (PIMAGE_BASE_RELOCATION) (((char *) relocation) + relocation->SizeOfBlock);
- }
- }
-}
-
-static int
-BuildImportTable(PMEMORYMODULE module)
-{
- int result=1;
- unsigned char *codeBase = module->localCodeBase;
-
- PIMAGE_DATA_DIRECTORY directory = GET_HEADER_DICTIONARY(module, IMAGE_DIRECTORY_ENTRY_IMPORT);
- if (directory->Size > 0) {
- PIMAGE_IMPORT_DESCRIPTOR importDesc = (PIMAGE_IMPORT_DESCRIPTOR) (codeBase + directory->VirtualAddress);
- PIMAGE_IMPORT_DESCRIPTOR importEnd = (PIMAGE_IMPORT_DESCRIPTOR) (codeBase + directory->VirtualAddress + directory->Size);
-
- for (; importDesc < importEnd && importDesc->Name; importDesc++) {
- POINTER_TYPE *thunkRef;
- FARPROC *funcRef;
- HMODULE handle = GetModuleHandleA((LPCSTR) (codeBase + importDesc->Name));
- if (handle == nullptr) {
-#if DEBUG_OUTPUT
- OutputLastError("Can't load library");
-#endif
- result = 0;
- break;
- }
-
- module->modules = (HMODULE *)realloc(module->modules, (module->numModules+1)*(sizeof(HMODULE)));
- if (module->modules == nullptr) {
- result = 0;
- break;
- }
-
- module->modules[module->numModules++] = handle;
- if (importDesc->OriginalFirstThunk) {
- thunkRef = (POINTER_TYPE *) (codeBase + importDesc->OriginalFirstThunk);
- funcRef = (FARPROC *) (codeBase + importDesc->FirstThunk);
- } else {
- // no hint table
- thunkRef = (POINTER_TYPE *) (codeBase + importDesc->FirstThunk);
- funcRef = (FARPROC *) (codeBase + importDesc->FirstThunk);
- }
- for (; *thunkRef; thunkRef++, funcRef++) {
- if (IMAGE_SNAP_BY_ORDINAL(*thunkRef)) {
- *funcRef = (FARPROC)GetProcAddress(handle, (LPCSTR)IMAGE_ORDINAL(*thunkRef));
- } else {
- PIMAGE_IMPORT_BY_NAME thunkData = (PIMAGE_IMPORT_BY_NAME) (codeBase + (*thunkRef));
- *funcRef = (FARPROC)GetProcAddress(handle, (LPCSTR)&thunkData->Name);
- }
- if (*funcRef == 0) {
- result = 0;
- break;
- }
- }
-
- if (!result) {
- break;
- }
- }
- }
-
- return result;
-}
-
-static void* MemoryGetProcAddress(PMEMORYMODULE module, const char *name);
-
-void* LoadRemoteLibraryAndGetAddress(HANDLE hRemoteProcess,
- const WCHAR* library,
- const char* symbol)
-{
- // Map the DLL into memory
- nsAutoHandle hLibrary(
- CreateFile(library, GENERIC_READ, FILE_SHARE_READ, nullptr, OPEN_EXISTING,
- FILE_ATTRIBUTE_NORMAL, nullptr));
- if (INVALID_HANDLE_VALUE == hLibrary) {
-#if DEBUG_OUTPUT
- OutputLastError("Couldn't CreateFile the library.\n");
-#endif
- return nullptr;
- }
-
- nsAutoHandle hMapping(
- CreateFileMapping(hLibrary, nullptr, PAGE_READONLY, 0, 0, nullptr));
- if (!hMapping) {
-#if DEBUG_OUTPUT
- OutputLastError("Couldn't CreateFileMapping.\n");
-#endif
- return nullptr;
- }
-
- nsAutoRef<FileView> data(
- (const unsigned char*) MapViewOfFile(hMapping, FILE_MAP_READ, 0, 0, 0));
- if (!data) {
-#if DEBUG_OUTPUT
- OutputLastError("Couldn't MapViewOfFile.\n");
-#endif
- return nullptr;
- }
-
- SIZE_T locationDelta;
-
- PIMAGE_DOS_HEADER dos_header = (PIMAGE_DOS_HEADER)data.get();
- if (dos_header->e_magic != IMAGE_DOS_SIGNATURE) {
-#if DEBUG_OUTPUT
- OutputDebugStringA("Not a valid executable file.\n");
-#endif
- return nullptr;
- }
-
- PIMAGE_NT_HEADERS old_header = (PIMAGE_NT_HEADERS)(data + dos_header->e_lfanew);
- if (old_header->Signature != IMAGE_NT_SIGNATURE) {
-#if DEBUG_OUTPUT
- OutputDebugStringA("No PE header found.\n");
-#endif
- return nullptr;
- }
-
- // reserve memory for image of library in this process and the target process
- unsigned char* localCode = (unsigned char*) VirtualAlloc(nullptr,
- old_header->OptionalHeader.SizeOfImage,
- MEM_RESERVE | MEM_COMMIT,
- PAGE_READWRITE);
- if (!localCode) {
-#if DEBUG_OUTPUT
- OutputLastError("Can't reserve local memory.");
-#endif
- }
-
- unsigned char* remoteCode = (unsigned char*) VirtualAllocEx(hRemoteProcess, nullptr,
- old_header->OptionalHeader.SizeOfImage,
- MEM_RESERVE,
- PAGE_EXECUTE_READ);
- if (!remoteCode) {
-#if DEBUG_OUTPUT
- OutputLastError("Can't reserve remote memory.");
-#endif
- }
-
- MEMORYMODULE result;
- result.localCodeBase = localCode;
- result.remoteCodeBase = remoteCode;
- result.numModules = 0;
- result.modules = nullptr;
-
- // copy PE header to code
- memcpy(localCode, dos_header, dos_header->e_lfanew + old_header->OptionalHeader.SizeOfHeaders);
- result.headers = reinterpret_cast<PIMAGE_NT_HEADERS>(localCode + dos_header->e_lfanew);
-
- // update position
- result.headers->OptionalHeader.ImageBase = (POINTER_TYPE)remoteCode;
-
- // copy sections from DLL file block to new memory location
- CopySections(data, old_header, &result);
-
- // adjust base address of imported data
- locationDelta = (SIZE_T)(remoteCode - old_header->OptionalHeader.ImageBase);
- if (locationDelta != 0) {
- PerformBaseRelocation(&result, locationDelta);
- }
-
- // load required dlls and adjust function table of imports
- if (!BuildImportTable(&result)) {
- return nullptr;
- }
-
- // mark memory pages depending on section headers and release
- // sections that are marked as "discardable"
- if (!FinalizeSections(&result, hRemoteProcess)) {
- return nullptr;
- }
-
- return MemoryGetProcAddress(&result, symbol);
-}
-
-static void* MemoryGetProcAddress(PMEMORYMODULE module, const char *name)
-{
- unsigned char *localCodeBase = module->localCodeBase;
- int idx=-1;
- DWORD i, *nameRef;
- WORD *ordinal;
- PIMAGE_EXPORT_DIRECTORY exports;
- PIMAGE_DATA_DIRECTORY directory = GET_HEADER_DICTIONARY(module, IMAGE_DIRECTORY_ENTRY_EXPORT);
- if (directory->Size == 0) {
- // no export table found
- return nullptr;
- }
-
- exports = (PIMAGE_EXPORT_DIRECTORY) (localCodeBase + directory->VirtualAddress);
- if (exports->NumberOfNames == 0 || exports->NumberOfFunctions == 0) {
- // DLL doesn't export anything
- return nullptr;
- }
-
- // search function name in list of exported names
- nameRef = (DWORD *) (localCodeBase + exports->AddressOfNames);
- ordinal = (WORD *) (localCodeBase + exports->AddressOfNameOrdinals);
- for (i=0; i<exports->NumberOfNames; i++, nameRef++, ordinal++) {
- if (stricmp(name, (const char *) (localCodeBase + (*nameRef))) == 0) {
- idx = *ordinal;
- break;
- }
- }
-
- if (idx == -1) {
- // exported symbol not found
- return nullptr;
- }
-
- if ((DWORD)idx > exports->NumberOfFunctions) {
- // name <-> ordinal number don't match
- return nullptr;
- }
-
- // AddressOfFunctions contains the RVAs to the "real" functions
- return module->remoteCodeBase + (*(DWORD *) (localCodeBase + exports->AddressOfFunctions + (idx*4)));
-}