| // 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 |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| // |
| // file_id.h: Return a unique identifier for a file |
| // |
| |
| #ifndef COMMON_LINUX_FILE_ID_H__ |
| #define COMMON_LINUX_FILE_ID_H__ |
| |
| #include <limits.h> |
| #include <string> |
| |
| #include "common/linux/guid_creator.h" |
| #include "common/memory_allocator.h" |
| #include "common/using_std_string.h" |
| |
| namespace google_breakpad { |
| |
| // GNU binutils' ld defaults to 'sha1', which is 160 bits == 20 bytes, |
| // so this is enough to fit that, which most binaries will use. |
| // This is just a sensible default for auto_wasteful_vector so most |
| // callers can get away with stack allocation. |
| static const size_t kDefaultBuildIdSize = 20; |
| |
| class FileID { |
| public: |
| explicit FileID(const char* path); |
| ~FileID() {} |
| |
| // Load the identifier for the elf file path specified in the constructor into |
| // |identifier|. |
| // |
| // The current implementation will look for a .note.gnu.build-id |
| // section and use that as the file id, otherwise it falls back to |
| // XORing the first 4096 bytes of the .text section to generate an identifier. |
| bool ElfFileIdentifier(wasteful_vector<uint8_t>& identifier); |
| |
| // Load the identifier for the elf file mapped into memory at |base| into |
| // |identifier|. Return false if the identifier could not be created for this |
| // file. |
| static bool ElfFileIdentifierFromMappedFile( |
| const void* base, |
| wasteful_vector<uint8_t>& identifier); |
| |
| // Convert the |identifier| data to a string. The string will |
| // be formatted as a UUID in all uppercase without dashes. |
| // (e.g., 22F065BBFC9C49F780FE26A7CEBD7BCE). |
| static string ConvertIdentifierToUUIDString( |
| const wasteful_vector<uint8_t>& identifier); |
| |
| // Convert the entire |identifier| data to a hex string. |
| static string ConvertIdentifierToString( |
| const wasteful_vector<uint8_t>& identifier); |
| |
| private: |
| // Storage for the path specified |
| string path_; |
| }; |
| |
| } // namespace google_breakpad |
| |
| #endif // COMMON_LINUX_FILE_ID_H__ |