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- // Copyright 2016 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include <stddef.h>
- #include <stdint.h>
- #include <string.h>
- #include <istream>
- #include <limits>
- #include <memory>
- #include <streambuf>
- #include "base/memory/free_deleter.h"
- #include "google_breakpad/processor/basic_source_line_resolver.h"
- #include "google_breakpad/processor/minidump.h"
- #include "google_breakpad/processor/minidump_processor.h"
- #include "google_breakpad/processor/process_state.h"
- #include "processor/logging.h"
- #include "processor/simple_symbol_supplier.h"
- #include "processor/stackwalk_common.h"
- namespace {
- using google_breakpad::BasicSourceLineResolver;
- using google_breakpad::Minidump;
- using google_breakpad::MinidumpProcessor;
- using google_breakpad::ProcessState;
- using google_breakpad::SimpleSymbolSupplier;
- struct membuf : std::streambuf {
- membuf(char* begin, char* end) { setg(begin, begin, end); }
- protected:
- virtual pos_type seekoff(off_type off,
- std::ios_base::seekdir dir,
- std::ios_base::openmode which = std::ios_base::in) {
- if (dir == std::ios_base::cur)
- gbump(off);
- return gptr() - eback();
- }
- };
- bool PrintMinidumpProcess(const uint8_t* data,
- size_t size,
- const std::vector<string>& symbol_paths) {
- // Signature and version number.
- static const uint8_t kHeaderPrefix[] = {'P', 'M', 'D', 'M', 0, 0, 0xa7, 0x93};
- if (size > std::numeric_limits<size_t>::max() - sizeof(kHeaderPrefix))
- return false;
- size += sizeof(kHeaderPrefix);
- std::unique_ptr<char, base::FreeDeleter> buffer(
- static_cast<char*>(malloc(size)));
- if (!buffer)
- return false;
- memcpy(buffer.get(), kHeaderPrefix, sizeof(kHeaderPrefix));
- memcpy(buffer.get() + sizeof(kHeaderPrefix), data,
- size - sizeof(kHeaderPrefix));
- membuf sbuf(buffer.get(), buffer.get() + size);
- std::istream input(&sbuf);
- std::unique_ptr<SimpleSymbolSupplier> symbol_supplier;
- if (!symbol_paths.empty())
- symbol_supplier = std::make_unique<SimpleSymbolSupplier>(symbol_paths);
- BasicSourceLineResolver resolver;
- MinidumpProcessor minidump_processor(symbol_supplier.get(), &resolver);
- // Process the minidump.
- Minidump dump(input);
- if (!dump.Read()) {
- BPLOG(ERROR) << "Minidump " << dump.path() << " could not be read";
- return false;
- }
- ProcessState process_state;
- if (minidump_processor.Process(&dump, &process_state) !=
- google_breakpad::PROCESS_OK) {
- BPLOG(ERROR) << "MinidumpProcessor::Process failed";
- return false;
- }
- PrintProcessStateMachineReadable(process_state);
- return true;
- }
- } // namespace
- extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
- // TODO(wfh): Somehow pull symbols in.
- PrintMinidumpProcess(data, size, std::vector<string>());
- return 0;
- }
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