Security-57031.1.35.tar.gz

[apple/security.git] / libsecurity_utilities / lib / dyldcache.cpp

diff --git a/libsecurity_utilities/lib/dyldcache.cpp b/libsecurity_utilities/lib/dyldcache.cpp
deleted file mode 100644 (file)
index 267e52d..0000000
--- a/libsecurity_utilities/lib/dyldcache.cpp
+++ /dev/null
@@ -1,143 +0,0 @@
-/*
- * Copyright (c) 2009 Apple Inc. All Rights Reserved.
- * 
- * @APPLE_LICENSE_HEADER_START@
- * 
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- * 
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- * 
- * @APPLE_LICENSE_HEADER_END@
- */
-
-//
-// dyldcache - access layer to the DYLD Shared Library Cache file
-//
-#include "dyldcache.h"
-
-
-//
-// Table of supported architectures.
-// The cache file header has no direct architecture information, so we need to deduce it like this.
-//
-static const uint16_t bigEndian = 0x1200;
-static const uint16_t littleEndian = 0x0012;
-
-const DYLDCache::ArchType DYLDCache::architectures[] = {
-       { CPU_TYPE_X86_64, CPU_SUBTYPE_MULTIPLE,        "dyld_v1  x86_64", "x86_64", littleEndian },
-       { CPU_TYPE_X86, CPU_SUBTYPE_MULTIPLE,           "dyld_v1    i386", "i386", littleEndian },
-       { CPU_TYPE_POWERPC, CPU_SUBTYPE_MULTIPLE,       "dyld_v1     ppc", "rosetta", bigEndian },
-       { CPU_TYPE_ARM, CPU_SUBTYPE_ARM_V6,                     "dyld_v1   armv6", "armv6", littleEndian },
-       { CPU_TYPE_ARM, CPU_SUBTYPE_ARM_V7,                     "dyld_v1   armv7", "armv7", littleEndian },
-       { 0 }
-};
-
-const DYLDCache::ArchType DYLDCache::defaultArchitecture =
-       { 0, 0, "dyld_v1 default", "unknown", littleEndian };
-
-
-//
-// Architecture matching and lookup
-//
-std::string DYLDCache::pathFor(const Architecture &arch)
-{
-       for (const ArchType *it = architectures; it->cpu; it++)
-               if (arch.matches(it->architecture()))
-                       return it->path();
-       UnixError::throwMe(ENOEXEC);
-}
-
-const DYLDCache::ArchType *DYLDCache::matchArchitecture(const dyld_cache_header &header)
-{
-       for (const ArchType *arch = architectures; arch->cpu; arch++)
-               if (!strcmp(header.magic, arch->magic))
-                       return arch;
-       if (!strncmp(header.magic, "dyld_v1 ", 8))
-               return &defaultArchitecture;
-       return NULL;
-}
-
-
-//
-// Construction and teardown
-//
-DYLDCache::DYLDCache(const std::string &path)
-{
-       this->open(path);
-       mLength = this->fileSize();
-       mBase = this->mmap(PROT_READ, mLength);
-       mHeader = at<dyld_cache_header>(0);
-
-       if ((mArch = matchArchitecture(*mHeader)) == NULL)
-               UnixError::throwMe(ENOEXEC);
-       mFlip = *((const uint8_t *)&mArch->order) != 0x12;
-       
-       mSigStart = (size_t)flip(mHeader->codeSignatureOffset);
-       mSigLength = (size_t)flip(mHeader->codeSignatureSize);
-}
-
-
-DYLDCache::~DYLDCache()
-{
-       ::munmap((void *)mBase, mLength);
-}
-
-
-//
-// Preflight a file for file type
-//
-bool DYLDCache::validate(UnixPlusPlus::FileDesc &fd)
-{
-       dyld_cache_header header;
-       return fd.read(&header, sizeof(header), 0) == sizeof(header)
-               && matchArchitecture(header) != NULL;
-}
-
-
-//
-// Locate a mapping in the cache
-//
-DYLDCache::Mapping DYLDCache::mapping(unsigned ix) const
-{
-       assert(ix < this->mappingCount());
-       return Mapping(*this, flip(mHeader->mappingOffset) + ix * sizeof(shared_file_mapping_np));
-}
-
-
-//
-// Locate an image in the cache
-//
-DYLDCache::Image DYLDCache::image(unsigned ix) const
-{
-       assert(ix < this->imageCount());
-       return Image(*this, flip(mHeader->imagesOffset) + ix * sizeof(dyld_cache_image_info));
-}
-
-
-
-DYLDCache::Mapping DYLDCache::findMap(uint64_t address) const
-{
-       for (unsigned ix = 0; ix < mappingCount(); ix++) {
-               Mapping map = this->mapping(ix);
-               if (map.contains(address))
-                       return map;
-       }
-       UnixError::throwMe(EINVAL);
-}
-
-uint64_t DYLDCache::mapAddress(uint64_t address) const
-{
-       Mapping map = this->findMap(address);
-       return (address - map.address()) + map.offset();
-}