| // Copyright (c) 2006, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| // macho_id.h: Functions to gather identifying information from a macho file |
| // |
| // Author: Dan Waylonis |
| |
| #ifndef COMMON_MAC_MACHO_ID_H__ |
| #define COMMON_MAC_MACHO_ID_H__ |
| |
| #include <limits.h> |
| #include <mach/machine.h> |
| #include <mach-o/loader.h> |
| |
| #include "common/mac/macho_walker.h" |
| #include "common/md5.h" |
| |
| namespace MacFileUtilities { |
| |
| class MachoID { |
| public: |
| MachoID(const char* path); |
| MachoID(const char* path, void* memory, size_t size); |
| ~MachoID(); |
| |
| // For the given |cpu_type| and |cpu_subtype|, return a UUID from the LC_UUID |
| // command. |
| // Return false if there isn't a LC_UUID command. |
| bool UUIDCommand(cpu_type_t cpu_type, |
| cpu_subtype_t cpu_subtype, |
| unsigned char identifier[16]); |
| |
| // For the given |cpu_type| and |cpu_subtype|, return a UUID from the |
| // LC_ID_DYLIB command. |
| // Return false if there isn't a LC_ID_DYLIB command. |
| bool IDCommand(cpu_type_t cpu_type, |
| cpu_subtype_t cpu_subtype, |
| unsigned char identifier[16]); |
| |
| // For the given |cpu_type| and |cpu_subtype|, return the Adler32 CRC for the |
| // mach-o data segment(s). |
| // Return 0 on error (e.g., if the file is not a mach-o file) |
| uint32_t Adler32(cpu_type_t cpu_type, |
| cpu_subtype_t cpu_subtype); |
| |
| // For the given |cpu_type|, and |cpu_subtype| return the MD5 for the mach-o |
| // data segment(s). |
| // Return true on success, false otherwise |
| bool MD5(cpu_type_t cpu_type, |
| cpu_subtype_t cpu_subtype, |
| unsigned char identifier[16]); |
| |
| private: |
| // Signature of class member function to be called with data read from file |
| typedef void (MachoID::*UpdateFunction)(unsigned char* bytes, size_t size); |
| |
| // Update the CRC value by examining |size| |bytes| and applying the algorithm |
| // to each byte. |
| void UpdateCRC(unsigned char* bytes, size_t size); |
| |
| // Update the MD5 value by examining |size| |bytes| and applying the algorithm |
| // to each byte. |
| void UpdateMD5(unsigned char* bytes, size_t size); |
| |
| // Bottleneck for update routines |
| void Update(MachoWalker* walker, off_t offset, size_t size); |
| |
| // Factory for the MachoWalker |
| bool WalkHeader(cpu_type_t cpu_type, cpu_subtype_t cpu_subtype, |
| MachoWalker::LoadCommandCallback callback, void* context); |
| |
| // The callback from the MachoWalker for CRC and MD5 |
| static bool WalkerCB(MachoWalker* walker, load_command* cmd, off_t offset, |
| bool swap, void* context); |
| |
| // The callback from the MachoWalker for LC_UUID |
| static bool UUIDWalkerCB(MachoWalker* walker, load_command* cmd, off_t offset, |
| bool swap, void* context); |
| |
| // The callback from the MachoWalker for LC_ID_DYLIB |
| static bool IDWalkerCB(MachoWalker* walker, load_command* cmd, off_t offset, |
| bool swap, void* context); |
| |
| // File path |
| char path_[PATH_MAX]; |
| |
| // Memory region to read from |
| void* memory_; |
| |
| // Size of the memory region |
| size_t memory_size_; |
| |
| // The current crc value |
| uint32_t crc_; |
| |
| // The MD5 context |
| google_breakpad::MD5Context md5_context_; |
| |
| // The current update to call from the Update callback |
| UpdateFunction update_function_; |
| }; |
| |
| } // namespace MacFileUtilities |
| |
| #endif // COMMON_MAC_MACHO_ID_H__ |