1/* 2 * Copyright (C) 2011 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "DelayLoadedModulesEnumerator.h" 28 29#include "ImportedFunctionsEnumerator.h" 30#include <delayimp.h> 31 32// See <http://msdn.microsoft.com/en-us/magazine/cc301808.aspx> and 33// <http://msdn.microsoft.com/en-us/windows/hardware/gg463119> for more information about the PE 34// image format. 35 36namespace WebCore { 37 38DelayLoadedModulesEnumerator::DelayLoadedModulesEnumerator(const PEImage& image) 39 : m_image(image) 40{ 41 if (m_image.isValid()) 42 m_descriptor = static_cast<const ImgDelayDescr*>(m_image.dataDirectoryEntryAddress(IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT)); 43 else 44 m_descriptor = 0; 45} 46 47bool DelayLoadedModulesEnumerator::isAtEnd() const 48{ 49 return !m_descriptor || !m_descriptor->rvaHmod; 50} 51 52void DelayLoadedModulesEnumerator::next() 53{ 54 ASSERT(!isAtEnd()); 55 ++m_descriptor; 56} 57 58const char* DelayLoadedModulesEnumerator::currentModuleName() const 59{ 60 ASSERT(!isAtEnd()); 61 return static_cast<const char*>(convertPotentialRVAToAddress(m_descriptor->rvaDLLName)); 62} 63 64ImportedFunctionsEnumerator DelayLoadedModulesEnumerator::functionsEnumerator() const 65{ 66 ASSERT(!isAtEnd()); 67 68 const IMAGE_THUNK_DATA* importNameTable = static_cast<const IMAGE_THUNK_DATA*>(convertPotentialRVAToAddress(m_descriptor->rvaINT)); 69 const IMAGE_THUNK_DATA* importAddressTable = static_cast<const IMAGE_THUNK_DATA*>(convertPotentialRVAToAddress(m_descriptor->rvaIAT)); 70 71 return ImportedFunctionsEnumerator(m_image, importNameTable, importAddressTable); 72} 73 74const void* DelayLoadedModulesEnumerator::convertPotentialRVAToAddress(DWORD potentialRVA) const 75{ 76 ASSERT(!isAtEnd()); 77 78 if (!(m_descriptor->grAttrs & dlattrRva)) { 79 // m_image is a pre-VC7.0 image, so addresses stored in the ImageDelayDescr are non-relative. 80 return reinterpret_cast<void*>(potentialRVA); 81 } 82 83 return m_image.convertRVAToAddress(potentialRVA); 84} 85 86} // namespace WebCore 87