1bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// Copyright (c) 2006, Google Inc. 2bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// All rights reserved. 3bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// 4bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// Redistribution and use in source and binary forms, with or without 5bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// modification, are permitted provided that the following conditions are 6bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// met: 7bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// 8bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// * Redistributions of source code must retain the above copyright 9bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// notice, this list of conditions and the following disclaimer. 10bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// * Redistributions in binary form must reproduce the above 11bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// copyright notice, this list of conditions and the following disclaimer 12bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// in the documentation and/or other materials provided with the 13bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// distribution. 14bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// * Neither the name of Google Inc. nor the names of its 15bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// contributors may be used to endorse or promote products derived from 16bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// this software without specific prior written permission. 17bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// 18bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// 30bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// file_id.h: Return a unique identifier for a file 31bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly// 32bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly 33bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly#ifndef COMMON_LINUX_FILE_ID_H__ 34bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly#define COMMON_LINUX_FILE_ID_H__ 35bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly 36bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly#include <limits.h> 37ce2d9075df0d7ce8b7e5de935387cef773b9bc47thestig@chromium.org#include <string> 38bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly 39b0baafc4da1f3ffb84e267dd19d176db3de1c14enealsid#include "common/linux/guid_creator.h" 40b0baafc4da1f3ffb84e267dd19d176db3de1c14enealsid 41bcd46f007919b5063164c8c5c6c2bd4dfb62681elulynamespace google_breakpad { 42bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly 43b0baafc4da1f3ffb84e267dd19d176db3de1c14enealsidstatic const size_t kMDGUIDSize = sizeof(MDGUID); 44b0baafc4da1f3ffb84e267dd19d176db3de1c14enealsid 45bcd46f007919b5063164c8c5c6c2bd4dfb62681elulyclass FileID { 46bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly public: 47b0baafc4da1f3ffb84e267dd19d176db3de1c14enealsid explicit FileID(const char* path); 48b0baafc4da1f3ffb84e267dd19d176db3de1c14enealsid ~FileID() {} 49bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly 50bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly // Load the identifier for the elf file path specified in the constructor into 51bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly // |identifier|. Return false if the identifier could not be created for the 52bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly // file. 538ade75f9558e31d25aec862a552fe78f9ba98c82ted.mielczarek // The current implementation will look for a .note.gnu.build-id 548ade75f9558e31d25aec862a552fe78f9ba98c82ted.mielczarek // section and use that as the file id, otherwise it falls back to 558ade75f9558e31d25aec862a552fe78f9ba98c82ted.mielczarek // XORing the first 4096 bytes of the .text section to generate an identifier. 56b0baafc4da1f3ffb84e267dd19d176db3de1c14enealsid bool ElfFileIdentifier(uint8_t identifier[kMDGUIDSize]); 57bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly 580a5fc5d663054eb836eafc258cc2f6792358e2c9ted.mielczarek // Load the identifier for the elf file mapped into memory at |base| into 590a5fc5d663054eb836eafc258cc2f6792358e2c9ted.mielczarek // |identifier|. Return false if the identifier could not be created for the 600a5fc5d663054eb836eafc258cc2f6792358e2c9ted.mielczarek // file. 61f058b4faa7e16838d2120564fdb627076c3137f9benchan@chromium.org static bool ElfFileIdentifierFromMappedFile(const void* base, 620a5fc5d663054eb836eafc258cc2f6792358e2c9ted.mielczarek uint8_t identifier[kMDGUIDSize]); 630a5fc5d663054eb836eafc258cc2f6792358e2c9ted.mielczarek 64bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly // Convert the |identifier| data to a NULL terminated string. The string will 65bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly // be formatted as a UUID (e.g., 22F065BB-FC9C-49F7-80FE-26A7CEBD7BCE). 66bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly // The |buffer| should be at least 37 bytes long to receive all of the data 67bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly // and termination. Shorter buffers will contain truncated data. 68b0baafc4da1f3ffb84e267dd19d176db3de1c14enealsid static void ConvertIdentifierToString(const uint8_t identifier[kMDGUIDSize], 69b0baafc4da1f3ffb84e267dd19d176db3de1c14enealsid char* buffer, int buffer_length); 70bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly 71bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly private: 72bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly // Storage for the path specified 73ce2d9075df0d7ce8b7e5de935387cef773b9bc47thestig@chromium.org std::string path_; 74bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly}; 75bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly 76bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly} // namespace google_breakpad 77bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly 78bcd46f007919b5063164c8c5c6c2bd4dfb62681eluly#endif // COMMON_LINUX_FILE_ID_H__ 79