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Unified Diff: sandbox/src/pe_image.cc

Issue 179039: Fix issue 8348: unfork pe_image.h / pe_image.cc (Closed)
Patch Set: Removed unittest file and entries in .gyp file, restored #error message Created 11 years, 3 months ago
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Index: sandbox/src/pe_image.cc
diff --git a/sandbox/src/pe_image.cc b/sandbox/src/pe_image.cc
deleted file mode 100644
index 75c22b990c4394baaa07e54c299c4cd74b609344..0000000000000000000000000000000000000000
--- a/sandbox/src/pe_image.cc
+++ /dev/null
@@ -1,543 +0,0 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// This file implements PEImage, a generic class to manipulate PE files.
-// This file was adapted from GreenBorder's Code.
-
-#include "sandbox/src/pe_image.h"
-
-namespace sandbox {
-
-// Structure to perform imports enumerations.
-struct EnumAllImportsStorage {
- sandbox::PEImage::EnumImportsFunction callback;
- PVOID cookie;
-};
-
-// Callback used to enumerate imports. See EnumImportChunksFunction.
-bool ProcessImportChunk(const PEImage &image, LPCSTR module,
- PIMAGE_THUNK_DATA name_table,
- PIMAGE_THUNK_DATA iat, PVOID cookie) {
- EnumAllImportsStorage &storage = *reinterpret_cast<EnumAllImportsStorage*>(
- cookie);
-
- return image.EnumOneImportChunk(storage.callback, module, name_table, iat,
- storage.cookie);
-}
-
-// Callback used to enumerate delay imports. See EnumDelayImportChunksFunction.
-bool ProcessDelayImportChunk(const PEImage &image,
- PImgDelayDescr delay_descriptor,
- LPCSTR module, PIMAGE_THUNK_DATA name_table,
- PIMAGE_THUNK_DATA iat, PIMAGE_THUNK_DATA bound_iat,
- PIMAGE_THUNK_DATA unload_iat, PVOID cookie) {
- EnumAllImportsStorage &storage = *reinterpret_cast<EnumAllImportsStorage*>(
- cookie);
-
- return image.EnumOneDelayImportChunk(storage.callback, delay_descriptor,
- module, name_table, iat, bound_iat,
- unload_iat, storage.cookie);
-}
-
-} // namespace
-
-namespace sandbox {
-
-void PEImage::set_module(HMODULE module) {
- module_ = module;
-}
-
-PIMAGE_DOS_HEADER PEImage::GetDosHeader() const {
- return reinterpret_cast<PIMAGE_DOS_HEADER>(module_);
-}
-
-PIMAGE_NT_HEADERS PEImage::GetNTHeaders() const {
- PIMAGE_DOS_HEADER dos_header = GetDosHeader();
-
- return reinterpret_cast<PIMAGE_NT_HEADERS>(
- reinterpret_cast<char*>(dos_header) + dos_header->e_lfanew);
-}
-
-PIMAGE_SECTION_HEADER PEImage::GetSectionHeader(UINT section) const {
- PIMAGE_NT_HEADERS nt_headers = GetNTHeaders();
- PIMAGE_SECTION_HEADER first_section = IMAGE_FIRST_SECTION(nt_headers);
-
- if (section < nt_headers->FileHeader.NumberOfSections)
- return first_section + section;
- else
- return NULL;
-}
-
-WORD PEImage::GetNumSections() const {
- return GetNTHeaders()->FileHeader.NumberOfSections;
-}
-
-DWORD PEImage::GetImageDirectoryEntrySize(UINT directory) const {
- PIMAGE_NT_HEADERS nt_headers = GetNTHeaders();
-
- return nt_headers->OptionalHeader.DataDirectory[directory].Size;
-}
-
-PVOID PEImage::GetImageDirectoryEntryAddr(UINT directory) const {
- PIMAGE_NT_HEADERS nt_headers = GetNTHeaders();
-
- return RVAToAddr(
- nt_headers->OptionalHeader.DataDirectory[directory].VirtualAddress);
-}
-
-PIMAGE_SECTION_HEADER PEImage::GetImageSectionFromAddr(PVOID address) const {
- PBYTE target = reinterpret_cast<PBYTE>(address);
- PIMAGE_SECTION_HEADER section;
-
- for (UINT i = 0; NULL != (section = GetSectionHeader(i)); i++) {
- // Don't use the virtual RVAToAddr.
- PBYTE start = reinterpret_cast<PBYTE>(
- PEImage::RVAToAddr(section->VirtualAddress));
-
- DWORD size = section->Misc.VirtualSize;
-
- if ((start <= target) && (start + size > target))
- return section;
- }
-
- return NULL;
-}
-
-PIMAGE_SECTION_HEADER PEImage::GetImageSectionHeaderByName(
- LPCSTR section_name) const {
- if (NULL == section_name)
- return NULL;
-
- PIMAGE_SECTION_HEADER ret = NULL;
- int num_sections = GetNumSections();
-
- for (int i = 0; i < num_sections; i++) {
- PIMAGE_SECTION_HEADER section = GetSectionHeader(i);
- if (0 == _strnicmp(reinterpret_cast<LPCSTR>(section->Name), section_name,
- sizeof(section->Name))) {
- ret = section;
- break;
- }
- }
-
- return ret;
-}
-
-PDWORD PEImage::GetExportEntry(LPCSTR name) const {
- PIMAGE_EXPORT_DIRECTORY exports = GetExportDirectory();
-
- if (NULL == exports)
- return NULL;
-
- WORD ordinal = 0;
- if (!GetProcOrdinal(name, &ordinal))
- return NULL;
-
- PDWORD functions = reinterpret_cast<PDWORD>(
- RVAToAddr(exports->AddressOfFunctions));
-
- return functions + ordinal - exports->Base;
-}
-
-FARPROC PEImage::GetProcAddress(LPCSTR function_name) const {
- PDWORD export_entry = GetExportEntry(function_name);
- if (NULL == export_entry)
- return NULL;
-
- PBYTE function = reinterpret_cast<PBYTE>(RVAToAddr(*export_entry));
-
- PBYTE exports = reinterpret_cast<PBYTE>(
- GetImageDirectoryEntryAddr(IMAGE_DIRECTORY_ENTRY_EXPORT));
- DWORD size = GetImageDirectoryEntrySize(IMAGE_DIRECTORY_ENTRY_EXPORT);
-
- // Check for forwarded exports as a special case.
- if (exports <= function && exports + size > function)
-#pragma warning(push)
-#pragma warning(disable: 4312)
- // This cast generates a warning because it is 32 bit specific.
- return reinterpret_cast<FARPROC>(0xFFFFFFFF);
-#pragma warning(pop)
-
- return reinterpret_cast<FARPROC>(function);
-}
-
-bool PEImage::GetProcOrdinal(LPCSTR function_name, WORD *ordinal) const {
- if (NULL == ordinal)
- return false;
-
- PIMAGE_EXPORT_DIRECTORY exports = GetExportDirectory();
-
- if (NULL == exports)
- return false;
-
- if (IsOrdinal(function_name)) {
- *ordinal = ToOrdinal(function_name);
- } else {
- PDWORD names = reinterpret_cast<PDWORD>(RVAToAddr(exports->AddressOfNames));
- PDWORD lower = names;
- PDWORD upper = names + exports->NumberOfNames;
- int cmp = -1;
-
- // Binary Search for the name.
- while (lower != upper) {
- PDWORD middle = lower + (upper - lower) / 2;
- LPCSTR name = reinterpret_cast<LPCSTR>(RVAToAddr(*middle));
-
- cmp = strcmp(function_name, name);
-
- if (cmp == 0) {
- lower = middle;
- break;
- }
-
- if (cmp > 0)
- lower = middle + 1;
- else
- upper = middle;
- }
-
- if (cmp != 0)
- return false;
-
-
- PWORD ordinals = reinterpret_cast<PWORD>(
- RVAToAddr(exports->AddressOfNameOrdinals));
-
- *ordinal = ordinals[lower - names] + static_cast<WORD>(exports->Base);
- }
-
- return true;
-}
-
-bool PEImage::EnumSections(EnumSectionsFunction callback, PVOID cookie) const {
- PIMAGE_NT_HEADERS nt_headers = GetNTHeaders();
- UINT num_sections = nt_headers->FileHeader.NumberOfSections;
- PIMAGE_SECTION_HEADER section = GetSectionHeader(0);
-
- for (UINT i = 0; i < num_sections; i++, section++) {
- PVOID section_start = RVAToAddr(section->VirtualAddress);
- DWORD size = section->Misc.VirtualSize;
-
- if (!callback(*this, section, section_start, size, cookie))
- return false;
- }
-
- return true;
-}
-
-bool PEImage::EnumExports(EnumExportsFunction callback, PVOID cookie) const {
- PVOID directory = GetImageDirectoryEntryAddr(IMAGE_DIRECTORY_ENTRY_EXPORT);
- DWORD size = GetImageDirectoryEntrySize(IMAGE_DIRECTORY_ENTRY_EXPORT);
-
- // Check if there are any exports at all.
- if (NULL == directory || 0 == size)
- return true;
-
- PIMAGE_EXPORT_DIRECTORY exports = reinterpret_cast<PIMAGE_EXPORT_DIRECTORY>(
- directory);
- UINT ordinal_base = exports->Base;
- UINT num_funcs = exports->NumberOfFunctions;
- UINT num_names = exports->NumberOfNames;
- PDWORD functions = reinterpret_cast<PDWORD>(RVAToAddr(
- exports->AddressOfFunctions));
- PDWORD names = reinterpret_cast<PDWORD>(RVAToAddr(exports->AddressOfNames));
- PWORD ordinals = reinterpret_cast<PWORD>(RVAToAddr(
- exports->AddressOfNameOrdinals));
-
- for (UINT count = 0; count < num_funcs; count++) {
- PVOID func = RVAToAddr(functions[count]);
- if (NULL == func)
- continue;
-
- // Check for a name.
- LPCSTR name = NULL;
- UINT hint;
- for (hint = 0; hint < num_names; hint++) {
- if (ordinals[hint] == count) {
- name = reinterpret_cast<LPCSTR>(RVAToAddr(names[hint]));
- break;
- }
- }
-
- if (name == NULL)
- hint = 0;
-
- // Check for forwarded exports.
- LPCSTR forward = NULL;
- if (reinterpret_cast<char*>(func) >= reinterpret_cast<char*>(directory) &&
- reinterpret_cast<char*>(func) <= reinterpret_cast<char*>(directory) +
- size) {
- forward = reinterpret_cast<LPCSTR>(func);
- func = 0;
- }
-
- if (!callback(*this, ordinal_base + count, hint, name, func, forward,
- cookie))
- return false;
- }
-
- return true;
-}
-
-bool PEImage::EnumRelocs(EnumRelocsFunction callback, PVOID cookie) const {
- PVOID directory = GetImageDirectoryEntryAddr(IMAGE_DIRECTORY_ENTRY_BASERELOC);
- DWORD size = GetImageDirectoryEntrySize(IMAGE_DIRECTORY_ENTRY_BASERELOC);
- PIMAGE_BASE_RELOCATION base = reinterpret_cast<PIMAGE_BASE_RELOCATION>(
- directory);
-
- if (directory == NULL || size < sizeof(IMAGE_BASE_RELOCATION))
- return true;
-
- while (base->SizeOfBlock) {
- PWORD reloc = reinterpret_cast<PWORD>(base + 1);
- UINT num_relocs = (base->SizeOfBlock - sizeof(IMAGE_BASE_RELOCATION)) /
- sizeof(WORD);
-
- for (UINT i = 0; i < num_relocs; i++, reloc++) {
- WORD type = *reloc >> 12;
- PVOID address = RVAToAddr(base->VirtualAddress + (*reloc & 0x0FFF));
-
- if (!callback(*this, type, address, cookie))
- return false;
- }
-
- base = reinterpret_cast<PIMAGE_BASE_RELOCATION>(
- reinterpret_cast<char*>(base) + base->SizeOfBlock);
- }
-
- return true;
-}
-
-bool PEImage::EnumImportChunks(EnumImportChunksFunction callback,
- PVOID cookie) const {
- DWORD size = GetImageDirectoryEntrySize(IMAGE_DIRECTORY_ENTRY_IMPORT);
- PIMAGE_IMPORT_DESCRIPTOR import = GetFirstImportChunk();
-
- if (import == NULL || size < sizeof(IMAGE_IMPORT_DESCRIPTOR))
- return true;
-
- for (; import->FirstThunk; import++) {
- LPCSTR module_name = reinterpret_cast<LPCSTR>(RVAToAddr(import->Name));
- PIMAGE_THUNK_DATA name_table = reinterpret_cast<PIMAGE_THUNK_DATA>(
- RVAToAddr(import->OriginalFirstThunk));
- PIMAGE_THUNK_DATA iat = reinterpret_cast<PIMAGE_THUNK_DATA>(
- RVAToAddr(import->FirstThunk));
-
- if (!callback(*this, module_name, name_table, iat, cookie))
- return false;
- }
-
- return true;
-}
-
-bool PEImage::EnumOneImportChunk(EnumImportsFunction callback,
- LPCSTR module_name,
- PIMAGE_THUNK_DATA name_table,
- PIMAGE_THUNK_DATA iat, PVOID cookie) const {
- if (NULL == name_table)
- return false;
-
- for (; name_table && name_table->u1.Ordinal; name_table++, iat++) {
- LPCSTR name = NULL;
- WORD ordinal = 0;
- WORD hint = 0;
-
- if (IMAGE_SNAP_BY_ORDINAL(name_table->u1.Ordinal)) {
- ordinal = static_cast<WORD>(IMAGE_ORDINAL32(name_table->u1.Ordinal));
- } else {
- PIMAGE_IMPORT_BY_NAME import = reinterpret_cast<PIMAGE_IMPORT_BY_NAME>(
- RVAToAddr(name_table->u1.ForwarderString));
-
- hint = import->Hint;
- name = reinterpret_cast<LPCSTR>(&import->Name);
- }
-
- if (!callback(*this, module_name, ordinal, name, hint, iat, cookie))
- return false;
- }
-
- return true;
-}
-
-bool PEImage::EnumAllImports(EnumImportsFunction callback, PVOID cookie) const {
- EnumAllImportsStorage temp = { callback, cookie };
- return EnumImportChunks(ProcessImportChunk, &temp);
-}
-
-bool PEImage::EnumDelayImportChunks(EnumDelayImportChunksFunction callback,
- PVOID cookie) const {
- PVOID directory = GetImageDirectoryEntryAddr(
- IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT);
- DWORD size = GetImageDirectoryEntrySize(IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT);
- PImgDelayDescr delay_descriptor = reinterpret_cast<PImgDelayDescr>(directory);
-
- if (directory == NULL || size == 0)
- return true;
-
- for (; delay_descriptor->rvaHmod; delay_descriptor++) {
- PIMAGE_THUNK_DATA name_table;
- PIMAGE_THUNK_DATA iat;
- PIMAGE_THUNK_DATA bound_iat; // address of the optional bound IAT
- PIMAGE_THUNK_DATA unload_iat; // address of optional copy of original IAT
- LPCSTR module_name;
-
- // check if VC7-style imports, using RVAs instead of
- // VC6-style addresses.
- bool rvas = (delay_descriptor->grAttrs & dlattrRva) != 0;
-
- if (rvas) {
- module_name = reinterpret_cast<LPCSTR>(
- RVAToAddr(delay_descriptor->rvaDLLName));
- name_table = reinterpret_cast<PIMAGE_THUNK_DATA>(
- RVAToAddr(delay_descriptor->rvaINT));
- iat = reinterpret_cast<PIMAGE_THUNK_DATA>(
- RVAToAddr(delay_descriptor->rvaIAT));
- bound_iat = reinterpret_cast<PIMAGE_THUNK_DATA>(
- RVAToAddr(delay_descriptor->rvaBoundIAT));
- unload_iat = reinterpret_cast<PIMAGE_THUNK_DATA>(
- RVAToAddr(delay_descriptor->rvaUnloadIAT));
- } else {
-#pragma warning(push)
-#pragma warning(disable: 4312)
- // These casts generate warnings because they are 32 bit specific.
- module_name = reinterpret_cast<LPCSTR>(delay_descriptor->rvaDLLName);
- name_table = reinterpret_cast<PIMAGE_THUNK_DATA>(
- delay_descriptor->rvaINT);
- iat = reinterpret_cast<PIMAGE_THUNK_DATA>(delay_descriptor->rvaIAT);
- bound_iat = reinterpret_cast<PIMAGE_THUNK_DATA>(
- delay_descriptor->rvaBoundIAT);
- unload_iat = reinterpret_cast<PIMAGE_THUNK_DATA>(
- delay_descriptor->rvaUnloadIAT);
-#pragma warning(pop)
- }
-
- if (!callback(*this, delay_descriptor, module_name, name_table, iat,
- bound_iat, unload_iat, cookie))
- return false;
- }
-
- return true;
-}
-
-bool PEImage::EnumOneDelayImportChunk(EnumImportsFunction callback,
- PImgDelayDescr delay_descriptor,
- LPCSTR module_name,
- PIMAGE_THUNK_DATA name_table,
- PIMAGE_THUNK_DATA iat,
- PIMAGE_THUNK_DATA bound_iat,
- PIMAGE_THUNK_DATA unload_iat,
- PVOID cookie) const {
- UNREFERENCED_PARAMETER(bound_iat);
- UNREFERENCED_PARAMETER(unload_iat);
-
- for (; name_table->u1.Ordinal; name_table++, iat++) {
- LPCSTR name = NULL;
- WORD ordinal = 0;
- WORD hint = 0;
-
- if (IMAGE_SNAP_BY_ORDINAL(name_table->u1.Ordinal)) {
- ordinal = static_cast<WORD>(IMAGE_ORDINAL32(name_table->u1.Ordinal));
- } else {
- PIMAGE_IMPORT_BY_NAME import;
- bool rvas = (delay_descriptor->grAttrs & dlattrRva) != 0;
-
- if (rvas) {
- import = reinterpret_cast<PIMAGE_IMPORT_BY_NAME>(
- RVAToAddr(name_table->u1.ForwarderString));
- } else {
-#pragma warning(push)
-#pragma warning(disable: 4312)
- // This cast generates a warning because it is 32 bit specific.
- import = reinterpret_cast<PIMAGE_IMPORT_BY_NAME>(
- name_table->u1.ForwarderString);
-#pragma warning(pop)
- }
-
- hint = import->Hint;
- name = reinterpret_cast<LPCSTR>(&import->Name);
- }
-
- if (!callback(*this, module_name, ordinal, name, hint, iat, cookie))
- return false;
- }
-
- return true;
-}
-
-bool PEImage::EnumAllDelayImports(EnumImportsFunction callback,
- PVOID cookie) const {
- EnumAllImportsStorage temp = { callback, cookie };
- return EnumDelayImportChunks(ProcessDelayImportChunk, &temp);
-}
-
-bool PEImage::VerifyMagic() const {
- PIMAGE_DOS_HEADER dos_header = GetDosHeader();
-
- if (dos_header->e_magic != IMAGE_DOS_SIGNATURE)
- return false;
-
- PIMAGE_NT_HEADERS nt_headers = GetNTHeaders();
-
- if (nt_headers->Signature != IMAGE_NT_SIGNATURE)
- return false;
-
- if (nt_headers->FileHeader.SizeOfOptionalHeader !=
- sizeof(IMAGE_OPTIONAL_HEADER))
- return false;
-
- if (nt_headers->OptionalHeader.Magic != IMAGE_NT_OPTIONAL_HDR_MAGIC)
- return false;
-
- return true;
-}
-
-bool PEImage::ImageRVAToOnDiskOffset(DWORD rva, DWORD *on_disk_offset) const {
- LPVOID address = RVAToAddr(rva);
- return ImageAddrToOnDiskOffset(address, on_disk_offset);
-}
-
-bool PEImage::ImageAddrToOnDiskOffset(LPVOID address,
- DWORD *on_disk_offset) const {
- if (NULL == address)
- return false;
-
- // Get the section that this address belongs to.
- PIMAGE_SECTION_HEADER section_header = GetImageSectionFromAddr(address);
- if (NULL == section_header)
- return false;
-
-#pragma warning(push)
-#pragma warning(disable: 4311)
- // These casts generate warnings because they are 32 bit specific.
- // Don't follow the virtual RVAToAddr, use the one on the base.
- DWORD offset_within_section = reinterpret_cast<DWORD>(address) -
- reinterpret_cast<DWORD>(PEImage::RVAToAddr(
- section_header->VirtualAddress));
-#pragma warning(pop)
-
- *on_disk_offset = section_header->PointerToRawData + offset_within_section;
- return true;
-}
-
-PVOID PEImage::RVAToAddr(DWORD rva) const {
- if (rva == 0)
- return NULL;
-
- return reinterpret_cast<char*>(module_) + rva;
-}
-
-PVOID PEImageAsData::RVAToAddr(DWORD rva) const {
- if (rva == 0)
- return NULL;
-
- PVOID in_memory = PEImage::RVAToAddr(rva);
- DWORD dummy;
-
- if (!ImageAddrToOnDiskOffset(in_memory, &dummy))
- return NULL;
-
- return in_memory;
-}
-
-} // namespace sandbox
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