blob: ede08d7dd1f6e58e484b5bd2f147b90e6ebdfe59 [file] [log] [blame]
// Copyright 2015 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 "components/crash/content/app/crashpad.h"
#include <stddef.h>
#include <string.h>
#include <algorithm>
#include <map>
#include <vector>
#include "base/auto_reset.h"
#include "base/base_paths.h"
#include "base/command_line.h"
#include "base/debug/crash_logging.h"
#include "base/debug/dump_without_crashing.h"
#include "base/logging.h"
#include "base/macros.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_piece.h"
#include "base/strings/stringprintf.h"
#include "base/strings/sys_string_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "build/build_config.h"
#include "components/crash/content/app/crash_reporter_client.h"
#include "third_party/crashpad/crashpad/client/crash_report_database.h"
#include "third_party/crashpad/crashpad/client/crashpad_client.h"
#include "third_party/crashpad/crashpad/client/crashpad_info.h"
#include "third_party/crashpad/crashpad/client/settings.h"
#include "third_party/crashpad/crashpad/client/simple_string_dictionary.h"
#include "third_party/crashpad/crashpad/client/simulate_crash.h"
#if defined(OS_POSIX)
#include <unistd.h>
#endif // OS_POSIX
namespace crash_reporter {
namespace {
crashpad::SimpleStringDictionary* g_simple_string_dictionary;
crashpad::CrashReportDatabase* g_database;
void SetCrashKeyValue(const base::StringPiece& key,
const base::StringPiece& value) {
void ClearCrashKey(const base::StringPiece& key) {
bool LogMessageHandler(int severity,
const char* file,
int line,
size_t message_start,
const std::string& string) {
// Only handle FATAL.
if (severity != logging::LOG_FATAL) {
return false;
// In case of an out-of-memory condition, this code could be reentered when
// constructing and storing the key. Using a static is not thread-safe, but if
// multiple threads are in the process of a fatal crash at the same time, this
// should work.
static bool guarded = false;
if (guarded) {
return false;
base::AutoReset<bool> guard(&guarded, true);
// Only log last path component. This matches
if (file) {
const char* slash = strrchr(file, '/');
if (slash) {
file = slash + 1;
CHECK_LE(message_start, string.size());
std::string message = base::StringPrintf("%s:%d: %s", file, line,
string.c_str() + message_start);
SetCrashKeyValue("LOG_FATAL", message);
// Rather than including the code to force the crash here, allow the caller to
// do it.
return false;
void InitializeCrashpadImpl(bool initial_client,
const std::string& process_type,
const std::string& user_data_dir,
bool embedded_handler) {
static bool initialized = false;
initialized = true;
const bool browser_process = process_type.empty();
CrashReporterClient* crash_reporter_client = GetCrashReporterClient();
if (initial_client) {
#if defined(OS_MACOSX)
// "relauncher" is hard-coded because it's a Chrome --type, but this
// component can't see Chrome's switches. This is only used for argument
// sanitization.
DCHECK(browser_process || process_type == "relauncher");
#elif defined(OS_WIN)
// "Chrome Installer" is the name historically used for installer binaries
// as processed by the backend.
DCHECK(browser_process || process_type == "Chrome Installer");
#error Port.
#endif // OS_MACOSX
} else {
// database_path is only valid in the browser process.
base::FilePath database_path = internal::PlatformCrashpadInitialization(
initial_client, browser_process, embedded_handler, user_data_dir);
crashpad::CrashpadInfo* crashpad_info =
#if defined(OS_MACOSX)
#if defined(NDEBUG)
const bool is_debug_build = false;
const bool is_debug_build = true;
// Disable forwarding to the system's crash reporter in processes other than
// the browser process. For the browser, the system's crash reporter presents
// the crash UI to the user, so it's desirable there. Additionally, having
// crash reports appear in ~/Library/Logs/DiagnosticReports provides a
// fallback. Forwarding is turned off for debug-mode builds even for the
// browser process, because the system's crash reporter can take a very long
// time to chew on symbols.
if (!browser_process || is_debug_build) {
#endif // OS_MACOSX
g_simple_string_dictionary = new crashpad::SimpleStringDictionary();
// On Windows chrome_elf registers crash keys. This should work identically
// for component and non component builds.
base::debug::SetCrashKeyReportingFunctions(SetCrashKeyValue, ClearCrashKey);
SetCrashKeyValue("ptype", browser_process ? base::StringPiece("browser")
: base::StringPiece(process_type));
#if defined(OS_POSIX)
SetCrashKeyValue("pid", base::IntToString(getpid()));
#elif defined(OS_WIN)
SetCrashKeyValue("pid", base::IntToString(::GetCurrentProcessId()));
// If clients called CRASHPAD_SIMULATE_CRASH() instead of
// base::debug::DumpWithoutCrashing(), these dumps would appear as crashes in
// the correct function, at the correct file and line. This would be
// preferable to having all occurrences show up in DumpWithoutCrashing() at
// the same file and line.
#if defined(OS_MACOSX)
// On Mac, we only want the browser to initialize the database, but not the
// relauncher.
const bool should_initialize_database_and_set_upload_policy = browser_process;
#elif defined(OS_WIN)
// On Windows, we want both the browser process and the installer and any
// other "main, first process" to initialize things. There is no "relauncher"
// on Windows, so this is synonymous with initial_client.
const bool should_initialize_database_and_set_upload_policy = initial_client;
if (should_initialize_database_and_set_upload_policy) {
g_database =
} // namespace
void InitializeCrashpad(bool initial_client, const std::string& process_type) {
InitializeCrashpadImpl(initial_client, process_type, std::string(), false);
#if defined(OS_WIN)
void InitializeCrashpadWithEmbeddedHandler(bool initial_client,
const std::string& process_type,
const std::string& user_data_dir) {
InitializeCrashpadImpl(initial_client, process_type, user_data_dir, true);
#endif // OS_WIN
crashpad::CrashpadClient& GetCrashpadClient() {
static crashpad::CrashpadClient* const client =
new crashpad::CrashpadClient();
return *client;
void SetUploadConsent(bool consent) {
if (!g_database)
bool enable_uploads = false;
CrashReporterClient* crash_reporter_client = GetCrashReporterClient();
if (!crash_reporter_client->ReportingIsEnforcedByPolicy(&enable_uploads)) {
// Breakpad provided a --disable-breakpad switch to disable crash dumping
// (not just uploading) here. Crashpad doesn't need it: dumping is enabled
// unconditionally and uploading is gated on consent, which tests/bots
// shouldn't have. As a precaution, uploading is also disabled on bots even
// if consent is present.
enable_uploads = consent && !crash_reporter_client->IsRunningUnattended();
crashpad::Settings* settings = g_database->GetSettings();
settings->SetUploadsEnabled(enable_uploads &&
bool GetUploadsEnabled() {
if (g_database) {
crashpad::Settings* settings = g_database->GetSettings();
bool enable_uploads;
if (settings->GetUploadsEnabled(&enable_uploads)) {
return enable_uploads;
return false;
void GetReports(std::vector<Report>* reports) {
if (!g_database) {
std::vector<crashpad::CrashReportDatabase::Report> completed_reports;
crashpad::CrashReportDatabase::OperationStatus status =
if (status != crashpad::CrashReportDatabase::kNoError) {
std::vector<crashpad::CrashReportDatabase::Report> pending_reports;
status = g_database->GetPendingReports(&pending_reports);
if (status != crashpad::CrashReportDatabase::kNoError) {
for (const crashpad::CrashReportDatabase::Report& completed_report :
completed_reports) {
Report report;
report.local_id = completed_report.uuid.ToString();
report.capture_time = completed_report.creation_time;
report.remote_id =;
if (completed_report.uploaded) {
report.upload_time = completed_report.last_upload_attempt_time;
report.state = ReportUploadState::Uploaded;
} else {
report.upload_time = 0;
report.state = ReportUploadState::NotUploaded;
for (const crashpad::CrashReportDatabase::Report& pending_report :
pending_reports) {
Report report;
report.local_id = pending_report.uuid.ToString();
report.capture_time = pending_report.creation_time;
report.upload_time = 0;
report.state = pending_report.upload_explicitly_requested
? ReportUploadState::Pending_UserRequested
: report.state = ReportUploadState::Pending;
std::sort(reports->begin(), reports->end(),
[](const Report& a, const Report& b) {
return a.capture_time > b.capture_time;
void RequestSingleCrashUpload(const std::string& local_id) {
if (!g_database)
crashpad::UUID uuid;
void DumpWithoutCrashing() {
} // namespace crash_reporter
#if defined(OS_WIN)
extern "C" {
// This function is used in to trigger
// changes to the upload-enabled state. This is done when the metrics services
// are initialized, and when the user changes their consent for uploads. See
// crash_reporter::SetUploadConsent for effects. The given consent value should
// be consistent with
// crash_reporter::GetCrashReporterClient()->GetCollectStatsConsent(), but it's
// not enforced to avoid blocking startup code on synchronizing them.
void __declspec(dllexport) __cdecl SetUploadConsentImpl(bool consent) {
// NOTE: This function is used by SyzyASAN to annotate crash reports. If you
// change the name or signature of this function you will break SyzyASAN
// instrumented releases of Chrome. Please contact
// before doing so! See also
void __declspec(dllexport) __cdecl SetCrashKeyValueImpl(const wchar_t* key,
const wchar_t* value) {
void __declspec(dllexport) __cdecl ClearCrashKeyValueImpl(const wchar_t* key) {
// This helper is invoked by code in chrome.dll to request a single crash report
// upload. See CrashUploadListCrashpad.
void __declspec(dllexport)
RequestSingleCrashUploadImpl(const std::string& local_id) {
} // extern "C"
#endif // OS_WIN