Move pe_image and registry from base to base/win and use the namespace. It re...

base/pe_image.cc

Index: base/pe_image.cc
===================================================================
--- base/pe_image.cc	(revision 62848)
+++ base/pe_image.cc	(working copy)
@@ -1,564 +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 "base/pe_image.h"
-
-#if defined(_WIN64) && !defined(NACL_WIN64)
-// TODO(rvargas): Bug 27218. Make sure this is ok.
-#error This code is not tested on x64. Please make sure all the base unit tests\
- pass before doing any real work. The current unit tests don't test the\
- differences between 32- and 64-bits implementations. Bugs may slip through.\
- You need to improve the coverage before continuing.
-#endif
-
-// Structure to perform imports enumerations.
-struct EnumAllImportsStorage {
-  PEImage::EnumImportsFunction callback;
-  PVOID cookie;
-};
-
-namespace {
-
-  // Compare two strings byte by byte on an unsigned basis.
-  //   if s1 == s2, return 0
-  //   if s1 < s2, return negative
-  //   if s1 > s2, return positive
-  // Exception if inputs are invalid.
-  int StrCmpByByte(LPCSTR s1, LPCSTR s2) {
-    while (*s1 != '\0' && *s1 == *s2) {
-      ++s1;
-      ++s2;
-    }
-
-    return (*reinterpret_cast<const unsigned char*>(s1) -
-            *reinterpret_cast<const unsigned char*>(s2));
-  }
-
-}  // namespace
-
-// 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);
-}
-
-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));
-
-      // This may be called by sandbox before MSVCRT dll loads, so can't use
-      // CRT function here.
-      cmp = StrCmpByByte(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;
-}