summaryrefslogtreecommitdiffstats
path: root/toolkit/crashreporter/google-breakpad/src/processor/microdump_stackwalk.cc
blob: 220396ed933bb938842c9fd46c4492311863c342 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
// Copyright (c) 2014 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.

// microdump_stackwalk.cc: Process a microdump with MicrodumpProcessor, printing
// the results, including stack traces.

#include <stdio.h>
#include <string.h>
#include <unistd.h>

#include <fstream>
#include <string>
#include <vector>

#include "common/path_helper.h"
#include "common/scoped_ptr.h"
#include "common/using_std_string.h"
#include "google_breakpad/processor/basic_source_line_resolver.h"
#include "google_breakpad/processor/microdump.h"
#include "google_breakpad/processor/microdump_processor.h"
#include "google_breakpad/processor/process_state.h"
#include "google_breakpad/processor/stack_frame_symbolizer.h"
#include "processor/logging.h"
#include "processor/simple_symbol_supplier.h"
#include "processor/stackwalk_common.h"


namespace {

struct Options {
  bool machine_readable;
  bool output_stack_contents;

  string microdump_file;
  std::vector<string> symbol_paths;
};

using google_breakpad::BasicSourceLineResolver;
using google_breakpad::Microdump;
using google_breakpad::MicrodumpProcessor;
using google_breakpad::ProcessResult;
using google_breakpad::ProcessState;
using google_breakpad::scoped_ptr;
using google_breakpad::SimpleSymbolSupplier;
using google_breakpad::StackFrameSymbolizer;

// Processes |options.microdump_file| using
// MicrodumpProcessor. |options.symbol_path|, if non-empty, is the
// base directory of a symbol storage area, laid out in the format
// required by SimpleSymbolSupplier.  If such a storage area is
// specified, it is made available for use by the MicrodumpProcessor.
//
// Returns the value of MicrodumpProcessor::Process. If processing succeeds,
// prints identifying OS and CPU information from the microdump, crash
// information and call stacks for the crashing thread.
// All information is printed to stdout.
int PrintMicrodumpProcess(const Options& options) {
  std::ifstream file_stream(options.microdump_file);
  std::vector<char> bytes;
  file_stream.seekg(0, std::ios_base::end);
  bytes.resize(file_stream.tellg());
  if (bytes.empty()) {
    BPLOG(ERROR) << "Microdump is empty.";
    return 1;
  }
  file_stream.seekg(0, std::ios_base::beg);
  file_stream.read(&bytes[0], bytes.size());
  string microdump_content(&bytes[0], bytes.size());

  scoped_ptr<SimpleSymbolSupplier> symbol_supplier;
  if (!options.symbol_paths.empty()) {
    symbol_supplier.reset(new SimpleSymbolSupplier(options.symbol_paths));
  }

  BasicSourceLineResolver resolver;
  StackFrameSymbolizer frame_symbolizer(symbol_supplier.get(), &resolver);
  ProcessState process_state;
  MicrodumpProcessor microdump_processor(&frame_symbolizer);
  Microdump microdump(microdump_content);
  ProcessResult res = microdump_processor.Process(&microdump,
                                                  &process_state);

  if (res == google_breakpad::PROCESS_OK) {
    if (options.machine_readable) {
      PrintProcessStateMachineReadable(process_state);
    } else {
      PrintProcessState(process_state, options.output_stack_contents, &resolver);
    }
    return 0;
  }

  BPLOG(ERROR) << "MicrodumpProcessor::Process failed (code = " << res << ")";
  return 1;
}

}  // namespace

static void Usage(int argc, const char *argv[], bool error) {
  fprintf(error ? stderr : stdout,
          "Usage: %s [options] <microdump-file> [symbol-path ...]\n"
          "\n"
          "Output a stack trace for the provided microdump\n"
          "\n"
          "Options:\n"
          "\n"
          "  -m         Output in machine-readable format\n"
          "  -s         Output stack contents\n",
          google_breakpad::BaseName(argv[0]).c_str());
}

static void SetupOptions(int argc, const char *argv[], Options* options) {
  int ch;

  options->machine_readable = false;
  options->output_stack_contents = false;

  while ((ch = getopt(argc, (char * const *)argv, "hms")) != -1) {
    switch (ch) {
      case 'h':
        Usage(argc, argv, false);
        exit(0);
        break;

      case 'm':
        options->machine_readable = true;
        break;
      case 's':
        options->output_stack_contents = true;
        break;

      case '?':
        Usage(argc, argv, true);
        exit(1);
        break;
    }
  }

  if ((argc - optind) == 0) {
    fprintf(stderr, "%s: Missing microdump file\n", argv[0]);
    Usage(argc, argv, true);
    exit(1);
  }

  options->microdump_file = argv[optind];

  for (int argi = optind + 1; argi < argc; ++argi)
    options->symbol_paths.push_back(argv[argi]);
}

int main(int argc, const char* argv[]) {
  Options options;
  SetupOptions(argc, argv, &options);

  return PrintMicrodumpProcess(options);
}