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.cc: Return a unique identifier for a file |
31 | // |
32 | // See file_id.h for documentation |
33 | // |
34 | // Author: Dan Waylonis |
35 | |
36 | #include "common/mac/file_id.h" |
37 | |
38 | #include <fcntl.h> |
39 | #include <stdio.h> |
40 | #include <string.h> |
41 | |
42 | #include "common/mac/macho_id.h" |
43 | #include "common/scoped_ptr.h" |
44 | |
45 | using MacFileUtilities::MachoID; |
46 | |
47 | namespace google_breakpad { |
48 | namespace mach_o { |
49 | // Constructs a FileID given a path to a file |
50 | FileID::FileID(const char* path) : memory_(nullptr), size_(0) { |
51 | snprintf(path_, sizeof(path_), "%s" , path); |
52 | } |
53 | |
54 | // Constructs a FileID given the contents of a file and its size |
55 | FileID::FileID(void* memory, size_t size) |
56 | : path_(), memory_(memory), size_(size) {} |
57 | |
58 | bool FileID::MachoIdentifier(cpu_type_t cpu_type, |
59 | cpu_subtype_t cpu_subtype, |
60 | unsigned char identifier[16]) { |
61 | scoped_ptr<MachoID> macho; |
62 | if (memory_) { |
63 | macho.reset(new MachoID(memory_, size_)); |
64 | } else { |
65 | macho.reset(new MachoID(path_)); |
66 | } |
67 | if (macho->UUIDCommand(cpu_type, cpu_subtype, identifier)) |
68 | return true; |
69 | |
70 | return macho->MD5(cpu_type, cpu_subtype, identifier); |
71 | } |
72 | |
73 | // static |
74 | void FileID::ConvertIdentifierToString(const unsigned char identifier[16], |
75 | char *buffer, int buffer_length) { |
76 | int buffer_idx = 0; |
77 | for (int idx = 0; (buffer_idx < buffer_length) && (idx < 16); ++idx) { |
78 | int hi = (identifier[idx] >> 4) & 0x0F; |
79 | int lo = (identifier[idx]) & 0x0F; |
80 | |
81 | if (idx == 4 || idx == 6 || idx == 8 || idx == 10) |
82 | buffer[buffer_idx++] = '-'; |
83 | |
84 | buffer[buffer_idx++] = |
85 | static_cast<char>((hi >= 10) ? ('A' + hi - 10) : ('0' + hi)); |
86 | buffer[buffer_idx++] = |
87 | static_cast<char>((lo >= 10) ? ('A' + lo - 10) : ('0' + lo)); |
88 | } |
89 | |
90 | // NULL terminate |
91 | buffer[(buffer_idx < buffer_length) ? buffer_idx : buffer_idx - 1] = 0; |
92 | } |
93 | |
94 | } // namespace mach_o |
95 | } // namespace google_breakpad |
96 | |