1 // Copyright (c) 2006, Google Inc. 2 // 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 are 6 // met: 7 // 8 // * Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // * Redistributions in binary form must reproduce the above 11 // copyright notice, this list of conditions and the following disclaimer 12 // in the documentation and/or other materials provided with the 13 // distribution. 14 // * Neither the name of Google Inc. nor the names of its 15 // contributors may be used to endorse or promote products derived from 16 // this software without specific prior written permission. 17 // 18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30 // file_id.h: Return a unique identifier for a file 31 // 32 // Author: Dan Waylonis 33 34 #ifndef COMMON_MAC_FILE_ID_H__ 35 #define COMMON_MAC_FILE_ID_H__ 36 37 #include <limits.h> 38 #include <mach/machine.h> 39 40 namespace google_breakpad { 41 42 class FileID { 43 public: 44 FileID(const char *path); ~FileID()45 ~FileID() {}; 46 47 // Load the identifier for the file path specified in the constructor into 48 // |identifier|. Return false if the identifier could not be created for the 49 // file. 50 // The current implementation will return the MD5 hash of the file's bytes. 51 bool FileIdentifier(unsigned char identifier[16]); 52 53 // Treat the file as a mach-o file that will contain one or more archicture. 54 // Accepted values for |cpu_type| and |cpu_subtype| (e.g., CPU_TYPE_X86 or 55 // CPU_TYPE_POWERPC) are listed in /usr/include/mach/machine.h. 56 // If |cpu_type| is 0, then the native cpu type is used. If |cpu_subtype| is 57 // CPU_SUBTYPE_MULTIPLE, the match is only done on |cpu_type|. 58 // Returns false if opening the file failed or if the |cpu_type|/|cpu_subtype| 59 // is not present in the file. 60 // Return the unique identifier in |identifier|. 61 // The current implementation will look for the (in order of priority): 62 // LC_UUID, LC_ID_DYLIB, or MD5 hash of the given |cpu_type|. 63 bool MachoIdentifier(cpu_type_t cpu_type, 64 cpu_subtype_t cpu_subtype, 65 unsigned char identifier[16]); 66 67 // Convert the |identifier| data to a NULL terminated string. The string will 68 // be formatted as a UUID (e.g., 22F065BB-FC9C-49F7-80FE-26A7CEBD7BCE). 69 // The |buffer| should be at least 37 bytes long to receive all of the data 70 // and termination. Shorter buffers will contain truncated data. 71 static void ConvertIdentifierToString(const unsigned char identifier[16], 72 char *buffer, int buffer_length); 73 74 private: 75 // Storage for the path specified 76 char path_[PATH_MAX]; 77 }; 78 79 } // namespace google_breakpad 80 81 #endif // COMMON_MAC_FILE_ID_H__ 82