// Copyright (c) 2014 Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// microdump_stackwalk.cc: Process a microdump with MicrodumpProcessor, printing
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// the results, including stack traces.
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#include <stdio.h>
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#include <string.h>
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#include <fstream>
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#include <string>
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#include <vector>
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#include "common/scoped_ptr.h"
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#include "common/using_std_string.h"
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#include "google_breakpad/processor/basic_source_line_resolver.h"
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#include "google_breakpad/processor/microdump_processor.h"
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#include "google_breakpad/processor/process_state.h"
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#include "google_breakpad/processor/stack_frame_symbolizer.h"
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#include "processor/logging.h"
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#include "processor/simple_symbol_supplier.h"
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#include "processor/stackwalk_common.h"
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namespace {
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using google_breakpad::BasicSourceLineResolver;
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using google_breakpad::MicrodumpProcessor;
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using google_breakpad::ProcessResult;
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using google_breakpad::ProcessState;
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using google_breakpad::scoped_ptr;
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using google_breakpad::SimpleSymbolSupplier;
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using google_breakpad::StackFrameSymbolizer;
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// Processes |microdump_file| using MicrodumpProcessor. |symbol_path|, if
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// non-empty, is the base directory of a symbol storage area, laid out in
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// the format required by SimpleSymbolSupplier. If such a storage area
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// is specified, it is made available for use by the MicrodumpProcessor.
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//
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// Returns the value of MicrodumpProcessor::Process. If processing succeeds,
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// prints identifying OS and CPU information from the microdump, crash
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// information and call stacks for the crashing thread.
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// All information is printed to stdout.
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int PrintMicrodumpProcess(const char* microdump_file,
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const std::vector<string>& symbol_paths,
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bool machine_readable) {
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std::ifstream file_stream(microdump_file);
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std::vector<char> bytes;
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file_stream.seekg(0, std::ios_base::end);
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bytes.resize(file_stream.tellg());
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file_stream.seekg(0, std::ios_base::beg);
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file_stream.read(&bytes[0], bytes.size());
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string microdump_content(&bytes[0], bytes.size());
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scoped_ptr<SimpleSymbolSupplier> symbol_supplier;
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if (!symbol_paths.empty()) {
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symbol_supplier.reset(new SimpleSymbolSupplier(symbol_paths));
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}
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BasicSourceLineResolver resolver;
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StackFrameSymbolizer frame_symbolizer(symbol_supplier.get(), &resolver);
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ProcessState process_state;
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MicrodumpProcessor microdump_processor(&frame_symbolizer);
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ProcessResult res = microdump_processor.Process(microdump_content,
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&process_state);
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if (res == google_breakpad::PROCESS_OK) {
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if (machine_readable) {
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PrintProcessStateMachineReadable(process_state);
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} else {
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PrintProcessState(process_state, false, &resolver);
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}
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return 0;
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}
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BPLOG(ERROR) << "MicrodumpProcessor::Process failed (code = " << res << ")";
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return 1;
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}
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void usage(const char *program_name) {
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fprintf(stderr, "usage: %s [-m] <microdump-file> [symbol-path ...]\n"
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" -m : Output in machine-readable format\n",
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program_name);
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}
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} // namespace
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int main(int argc, char** argv) {
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BPLOG_INIT(&argc, &argv);
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if (argc < 2) {
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usage(argv[0]);
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return 1;
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}
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const char* microdump_file;
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bool machine_readable;
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int symbol_path_arg;
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if (strcmp(argv[1], "-m") == 0) {
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if (argc < 3) {
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usage(argv[0]);
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return 1;
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}
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machine_readable = true;
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microdump_file = argv[2];
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symbol_path_arg = 3;
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} else {
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machine_readable = false;
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microdump_file = argv[1];
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symbol_path_arg = 2;
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}
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// extra arguments are symbol paths
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std::vector<string> symbol_paths;
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if (argc > symbol_path_arg) {
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for (int argi = symbol_path_arg; argi < argc; ++argi)
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symbol_paths.push_back(argv[argi]);
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}
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return PrintMicrodumpProcess(microdump_file,
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symbol_paths,
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machine_readable);
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}
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