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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/crash/core/app/fallback_crash_handler_win.h"
#include <dbghelp.h>
#include <psapi.h>
#include <algorithm>
#include <map>
#include <memory>
#include <string>
#include "base/command_line.h"
#include "base/files/file.h"
#include "base/numerics/safe_conversions.h"
#include "base/process/process_handle.h"
#include "base/strings/string_number_conversions.h"
#include "base/win/scoped_handle.h"
#include "base/win/windows_handle_util.h"
#include "build/build_config.h"
#include "components/crash/core/app/minidump_with_crashpad_info.h"
namespace crash_reporter {
namespace {
void AcquireMemoryMetrics(const base::Process& process,
StringStringMap* crash_keys) {
// Grab the process private memory.
// This is best effort, though really shouldn't ever fail.
PROCESS_MEMORY_COUNTERS_EX process_memory = {sizeof(process_memory)};
if (GetProcessMemoryInfo(
process.Handle(),
reinterpret_cast<PROCESS_MEMORY_COUNTERS*>(&process_memory),
sizeof(process_memory))) {
// This is in units of bytes, re-scale to pages for consistency with
// system metrics.
const uint64_t kPageSize = 4096;
crash_keys->insert(std::make_pair(
"ProcessPrivateUsage",
base::NumberToString(process_memory.PrivateUsage / kPageSize)));
crash_keys->insert(std::make_pair(
"ProcessPeakWorkingSetSize",
base::NumberToString(process_memory.PeakWorkingSetSize / kPageSize)));
crash_keys->insert(std::make_pair(
"ProcessPeakPagefileUsage",
base::NumberToString(process_memory.PeakPagefileUsage / kPageSize)));
}
// Grab system commit memory. Also best effort.
PERFORMANCE_INFORMATION perf_info = {sizeof(perf_info)};
if (GetPerformanceInfo(&perf_info, sizeof(perf_info))) {
// Record the remaining committable memory and the limit. This is in units
// of system pages.
crash_keys->insert(std::make_pair(
"SystemCommitRemaining",
base::NumberToString(perf_info.CommitLimit - perf_info.CommitTotal)));
crash_keys->insert(std::make_pair(
"SystemCommitLimit", base::NumberToString(perf_info.CommitLimit)));
}
}
} // namespace
FallbackCrashHandler::FallbackCrashHandler()
: thread_id_(base::kInvalidThreadId), exception_ptrs_(0UL) {}
FallbackCrashHandler::~FallbackCrashHandler() = default;
bool FallbackCrashHandler::ParseCommandLine(const base::CommandLine& cmd_line) {
// Retrieve the handle to the process to dump.
unsigned int uint_process;
if (!base::StringToUint(cmd_line.GetSwitchValueASCII("process"),
&uint_process)) {
return false;
}
// Before taking ownership of the supposed handle, see whether it's really
// a process handle.
base::ProcessHandle process_handle = base::win::Uint32ToHandle(uint_process);
if (base::GetProcId(process_handle) == base::kNullProcessId)
return false;
// Retrieve the thread id argument.
unsigned int thread_id = 0;
if (!base::StringToUint(cmd_line.GetSwitchValueASCII("thread"), &thread_id)) {
return false;
}
thread_id_ = base::PlatformThreadId(
static_cast<base::PlatformThreadId::UnderlyingType>(thread_id));
// Retrieve the "exception-pointers" argument.
uint64_t uint_exc_ptrs = 0;
if (!base::StringToUint64(cmd_line.GetSwitchValueASCII("exception-pointers"),
&uint_exc_ptrs)) {
return false;
}
exception_ptrs_ = static_cast<uintptr_t>(uint_exc_ptrs);
// Retrieve the "database" argument.
database_dir_ = cmd_line.GetSwitchValuePath("database");
if (database_dir_.empty())
return false;
// Everything checks out, take ownership of the process handle.
process_ = base::Process(process_handle);
return true;
}
bool FallbackCrashHandler::GenerateCrashDump(const std::string& product,
const std::string& version,
const std::string& channel,
const std::string& process_type) {
MINIDUMP_EXCEPTION_INFORMATION exc_info = {};
exc_info.ThreadId = thread_id_.raw();
exc_info.ExceptionPointers =
reinterpret_cast<EXCEPTION_POINTERS*>(exception_ptrs_);
exc_info.ClientPointers = TRUE; // ExceptionPointers in client.
// Mandatory crash keys. These will be read by Crashpad and used as
// http request parameters for the upload. Keys and values need to match
// server side configuration.
#if defined(ARCH_CPU_64_BITS)
const char* platform = "Win64";
#else
const char* platform = "Win32";
#endif
std::map<std::string, std::string> crash_keys = {{"prod", product},
{"ver", version},
{"channel", channel},
{"plat", platform},
{"ptype", process_type}};
// Add memory metrics relating to system-wide and target process memory usage.
AcquireMemoryMetrics(process_, &crash_keys);
uint32_t minidump_type = MiniDumpWithUnloadedModules |
MiniDumpWithProcessThreadData |
MiniDumpWithFullMemoryInfo |
MiniDumpWithThreadInfo;
// Capture more detail for canary and dev channels. The prefix search caters
// for the legacy "-m" suffixed multi-install channels.
if (channel.find("canary") == 0 || channel.find("dev") == 0)
minidump_type |= MiniDumpWithIndirectlyReferencedMemory;
return DumpAndReportProcess(process_, minidump_type, &exc_info, crash_keys,
database_dir_);
}
} // namespace crash_reporter
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