toolkit/crashreporter/google-breakpad/src/common/mac/file_id.cc@b8a032363ba2 (annotated)
toolkit/crashreporter/google-breakpad/src/common/mac/file_id.cc
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | // Copyright (c) 2006, Google Inc. |
| michael@0 | 2 | // All rights reserved. |
| michael@0 | 3 | // |
| michael@0 | 4 | // Redistribution and use in source and binary forms, with or without |
| michael@0 | 5 | // modification, are permitted provided that the following conditions are |
| michael@0 | 6 | // met: |
| michael@0 | 7 | // |
| michael@0 | 8 | // * Redistributions of source code must retain the above copyright |
| michael@0 | 9 | // notice, this list of conditions and the following disclaimer. |
| michael@0 | 10 | // * Redistributions in binary form must reproduce the above |
| michael@0 | 11 | // copyright notice, this list of conditions and the following disclaimer |
| michael@0 | 12 | // in the documentation and/or other materials provided with the |
| michael@0 | 13 | // distribution. |
| michael@0 | 14 | // * Neither the name of Google Inc. nor the names of its |
| michael@0 | 15 | // contributors may be used to endorse or promote products derived from |
| michael@0 | 16 | // this software without specific prior written permission. |
| michael@0 | 17 | // |
| michael@0 | 18 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| michael@0 | 19 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| michael@0 | 20 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| michael@0 | 21 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| michael@0 | 22 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| michael@0 | 23 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| michael@0 | 24 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| michael@0 | 25 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| michael@0 | 26 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| michael@0 | 27 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| michael@0 | 28 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| michael@0 | 29 | |
| michael@0 | 30 | // file_id.cc: Return a unique identifier for a file |
| michael@0 | 31 | // |
| michael@0 | 32 | // See file_id.h for documentation |
| michael@0 | 33 | // |
| michael@0 | 34 | // Author: Dan Waylonis |
| michael@0 | 35 | |
| michael@0 | 36 | #include <fcntl.h> |
| michael@0 | 37 | #include <string.h> |
| michael@0 | 38 | #include <unistd.h> |
| michael@0 | 39 | |
| michael@0 | 40 | #include "common/mac/file_id.h" |
| michael@0 | 41 | #include "common/mac/macho_id.h" |
| michael@0 | 42 | |
| michael@0 | 43 | using MacFileUtilities::MachoID; |
| michael@0 | 44 | |
| michael@0 | 45 | namespace google_breakpad { |
| michael@0 | 46 | |
| michael@0 | 47 | FileID::FileID(const char *path) { |
| michael@0 | 48 | strlcpy(path_, path, sizeof(path_)); |
| michael@0 | 49 | } |
| michael@0 | 50 | |
| michael@0 | 51 | bool FileID::FileIdentifier(unsigned char identifier[16]) { |
| michael@0 | 52 | int fd = open(path_, O_RDONLY); |
| michael@0 | 53 | if (fd == -1) |
| michael@0 | 54 | return false; |
| michael@0 | 55 | |
| michael@0 | 56 | MD5Context md5; |
| michael@0 | 57 | MD5Init(&md5); |
| michael@0 | 58 | |
| michael@0 | 59 | // Read 4k x 2 bytes at a time. This is faster than just 4k bytes, but |
| michael@0 | 60 | // doesn't seem to be an unreasonable size for the stack. |
| michael@0 | 61 | unsigned char buffer[4096 * 2]; |
| michael@0 | 62 | size_t buffer_size = sizeof(buffer); |
| michael@0 | 63 | while ((buffer_size = read(fd, buffer, buffer_size) > 0)) { |
| michael@0 | 64 | MD5Update(&md5, buffer, buffer_size); |
| michael@0 | 65 | } |
| michael@0 | 66 | |
| michael@0 | 67 | close(fd); |
| michael@0 | 68 | MD5Final(identifier, &md5); |
| michael@0 | 69 | |
| michael@0 | 70 | return true; |
| michael@0 | 71 | } |
| michael@0 | 72 | |
| michael@0 | 73 | bool FileID::MachoIdentifier(cpu_type_t cpu_type, |
| michael@0 | 74 | cpu_subtype_t cpu_subtype, |
| michael@0 | 75 | unsigned char identifier[16]) { |
| michael@0 | 76 | MachoID macho(path_); |
| michael@0 | 77 | |
| michael@0 | 78 | if (macho.UUIDCommand(cpu_type, cpu_subtype, identifier)) |
| michael@0 | 79 | return true; |
| michael@0 | 80 | |
| michael@0 | 81 | return macho.MD5(cpu_type, cpu_subtype, identifier); |
| michael@0 | 82 | } |
| michael@0 | 83 | |
| michael@0 | 84 | // static |
| michael@0 | 85 | void FileID::ConvertIdentifierToString(const unsigned char identifier[16], |
| michael@0 | 86 | char *buffer, int buffer_length) { |
| michael@0 | 87 | int buffer_idx = 0; |
| michael@0 | 88 | for (int idx = 0; (buffer_idx < buffer_length) && (idx < 16); ++idx) { |
| michael@0 | 89 | int hi = (identifier[idx] >> 4) & 0x0F; |
| michael@0 | 90 | int lo = (identifier[idx]) & 0x0F; |
| michael@0 | 91 | |
| michael@0 | 92 | if (idx == 4 || idx == 6 || idx == 8 || idx == 10) |
| michael@0 | 93 | buffer[buffer_idx++] = '-'; |
| michael@0 | 94 | |
| michael@0 | 95 | buffer[buffer_idx++] = |
| michael@0 | 96 | static_cast<char>((hi >= 10) ? ('A' + hi - 10) : ('0' + hi)); |
| michael@0 | 97 | buffer[buffer_idx++] = |
| michael@0 | 98 | static_cast<char>((lo >= 10) ? ('A' + lo - 10) : ('0' + lo)); |
| michael@0 | 99 | } |
| michael@0 | 100 | |
| michael@0 | 101 | // NULL terminate |
| michael@0 | 102 | buffer[(buffer_idx < buffer_length) ? buffer_idx : buffer_idx - 1] = 0; |
| michael@0 | 103 | } |
| michael@0 | 104 | |
| michael@0 | 105 | } // namespace google_breakpad |
