| // 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 "components/browser_watcher/postmortem_report_collector.h" |
| |
| #include <utility> |
| |
| #include "base/debug/activity_analyzer.h" |
| #include "base/files/file_enumerator.h" |
| #include "base/files/file_util.h" |
| #include "base/logging.h" |
| #include "base/metrics/histogram_macros.h" |
| #include "base/path_service.h" |
| #include "base/strings/string_piece.h" |
| #include "base/strings/string_util.h" |
| #include "base/strings/utf_string_conversions.h" |
| #include "components/browser_watcher/postmortem_minidump_writer.h" |
| #include "components/browser_watcher/stability_data_names.h" |
| #include "components/variations/active_field_trials.h" |
| #include "third_party/crashpad/crashpad/client/settings.h" |
| #include "third_party/crashpad/crashpad/util/misc/uuid.h" |
| |
| using base::FilePath; |
| |
| namespace browser_watcher { |
| |
| using ActivitySnapshot = base::debug::ThreadActivityAnalyzer::Snapshot; |
| using base::debug::ActivityUserData; |
| using base::debug::GlobalActivityAnalyzer; |
| using base::debug::GlobalActivityTracker; |
| using base::debug::ThreadActivityAnalyzer; |
| using crashpad::CrashReportDatabase; |
| |
| namespace { |
| |
| const char kFieldTrialKeyPrefix[] = "FieldTrial."; |
| |
| // Collects stability user data from the recorded format to the collected |
| // format. |
| void CollectUserData( |
| const ActivityUserData::Snapshot& recorded_map, |
| google::protobuf::Map<std::string, TypedValue>* collected_map, |
| StabilityReport* report) { |
| DCHECK(collected_map); |
| |
| for (const auto& name_and_value : recorded_map) { |
| const std::string& key = name_and_value.first; |
| const ActivityUserData::TypedValue& recorded_value = name_and_value.second; |
| TypedValue collected_value; |
| |
| switch (recorded_value.type()) { |
| case ActivityUserData::END_OF_VALUES: |
| NOTREACHED(); |
| break; |
| case ActivityUserData::RAW_VALUE: { |
| base::StringPiece raw = recorded_value.Get(); |
| collected_value.set_bytes_value(raw.data(), raw.size()); |
| break; |
| } |
| case ActivityUserData::RAW_VALUE_REFERENCE: { |
| base::StringPiece recorded_ref = recorded_value.GetReference(); |
| TypedValue::Reference* collected_ref = |
| collected_value.mutable_bytes_reference(); |
| collected_ref->set_address( |
| reinterpret_cast<uintptr_t>(recorded_ref.data())); |
| collected_ref->set_size(recorded_ref.size()); |
| break; |
| } |
| case ActivityUserData::STRING_VALUE: { |
| base::StringPiece value = recorded_value.GetString(); |
| |
| if (report && base::StartsWith(key, kFieldTrialKeyPrefix, |
| base::CompareCase::SENSITIVE)) { |
| // This entry represents an active Field Trial. |
| std::string trial_name = |
| key.substr(std::strlen(kFieldTrialKeyPrefix)); |
| variations::ActiveGroupId group_id = |
| variations::MakeActiveGroupId(trial_name, value.as_string()); |
| FieldTrial* field_trial = report->add_field_trials(); |
| field_trial->set_name_id(group_id.name); |
| field_trial->set_group_id(group_id.group); |
| continue; |
| } |
| |
| collected_value.set_string_value(value.data(), value.size()); |
| break; |
| } |
| case ActivityUserData::STRING_VALUE_REFERENCE: { |
| base::StringPiece recorded_ref = recorded_value.GetStringReference(); |
| TypedValue::Reference* collected_ref = |
| collected_value.mutable_string_reference(); |
| collected_ref->set_address( |
| reinterpret_cast<uintptr_t>(recorded_ref.data())); |
| collected_ref->set_size(recorded_ref.size()); |
| break; |
| } |
| case ActivityUserData::CHAR_VALUE: { |
| char char_value = recorded_value.GetChar(); |
| collected_value.set_char_value(&char_value, 1); |
| break; |
| } |
| case ActivityUserData::BOOL_VALUE: |
| collected_value.set_bool_value(recorded_value.GetBool()); |
| break; |
| case ActivityUserData::SIGNED_VALUE: |
| collected_value.set_signed_value(recorded_value.GetInt()); |
| break; |
| case ActivityUserData::UNSIGNED_VALUE: |
| collected_value.set_unsigned_value(recorded_value.GetUint()); |
| break; |
| } |
| |
| (*collected_map)[key].Swap(&collected_value); |
| } |
| } |
| |
| void CollectModuleInformation( |
| const std::vector<GlobalActivityTracker::ModuleInfo>& modules, |
| ProcessState* process_state) { |
| DCHECK(process_state); |
| |
| char code_identifier[17]; |
| char debug_identifier[41]; |
| |
| for (const GlobalActivityTracker::ModuleInfo& recorded : modules) { |
| CodeModule* collected = process_state->add_modules(); |
| collected->set_base_address(recorded.address); |
| collected->set_size(recorded.size); |
| collected->set_code_file(recorded.file); |
| |
| // Compute the code identifier using the required format. |
| snprintf(code_identifier, sizeof(code_identifier), "%08X%zx", |
| recorded.timestamp, recorded.size); |
| collected->set_code_identifier(code_identifier); |
| collected->set_debug_file(recorded.debug_file); |
| |
| // Compute the debug identifier using the required format. |
| const crashpad::UUID* uuid = |
| reinterpret_cast<const crashpad::UUID*>(recorded.identifier); |
| snprintf(debug_identifier, sizeof(debug_identifier), |
| "%08X%04X%04X%02X%02X%02X%02X%02X%02X%02X%02X%x", uuid->data_1, |
| uuid->data_2, uuid->data_3, uuid->data_4[0], uuid->data_4[1], |
| uuid->data_5[0], uuid->data_5[1], uuid->data_5[2], uuid->data_5[3], |
| uuid->data_5[4], uuid->data_5[5], recorded.age); |
| collected->set_debug_identifier(debug_identifier); |
| collected->set_is_unloaded(!recorded.is_loaded); |
| } |
| } |
| |
| } // namespace |
| |
| PostmortemReportCollector::PostmortemReportCollector( |
| const std::string& product_name, |
| const std::string& version_number, |
| const std::string& channel_name) |
| : product_name_(product_name), |
| version_number_(version_number), |
| channel_name_(channel_name) {} |
| |
| int PostmortemReportCollector::CollectAndSubmitForUpload( |
| const base::FilePath& debug_info_dir, |
| const base::FilePath::StringType& debug_file_pattern, |
| const std::set<base::FilePath>& excluded_debug_files, |
| crashpad::CrashReportDatabase* report_database) { |
| DCHECK_NE(true, debug_info_dir.empty()); |
| DCHECK_NE(true, debug_file_pattern.empty()); |
| DCHECK_NE(nullptr, report_database); |
| |
| // Collect the list of files to harvest. |
| std::vector<FilePath> debug_files = GetDebugStateFilePaths( |
| debug_info_dir, debug_file_pattern, excluded_debug_files); |
| UMA_HISTOGRAM_COUNTS_100("ActivityTracker.Collect.StabilityFileCount", |
| debug_files.size()); |
| |
| // Determine the crashpad client id. |
| crashpad::UUID client_id; |
| crashpad::Settings* settings = report_database->GetSettings(); |
| if (settings) { |
| // If GetSettings() or GetClientID() fails client_id will be left at its |
| // default value, all zeroes, which is appropriate. |
| settings->GetClientID(&client_id); |
| } |
| |
| // Process each stability file. |
| int success_cnt = 0; |
| for (const FilePath& file : debug_files) { |
| CollectionStatus status = |
| CollectAndSubmit(client_id, file, report_database); |
| // TODO(manzagop): consider making this a stability metric. |
| UMA_HISTOGRAM_ENUMERATION("ActivityTracker.Collect.Status", status, |
| COLLECTION_STATUS_MAX); |
| if (status == SUCCESS) |
| ++success_cnt; |
| } |
| |
| return success_cnt; |
| } |
| |
| std::vector<FilePath> PostmortemReportCollector::GetDebugStateFilePaths( |
| const base::FilePath& debug_info_dir, |
| const base::FilePath::StringType& debug_file_pattern, |
| const std::set<FilePath>& excluded_debug_files) { |
| DCHECK_NE(true, debug_info_dir.empty()); |
| DCHECK_NE(true, debug_file_pattern.empty()); |
| |
| std::vector<FilePath> paths; |
| base::FileEnumerator enumerator(debug_info_dir, false /* recursive */, |
| base::FileEnumerator::FILES, |
| debug_file_pattern); |
| FilePath path; |
| for (path = enumerator.Next(); !path.empty(); path = enumerator.Next()) { |
| if (excluded_debug_files.find(path) == excluded_debug_files.end()) |
| paths.push_back(path); |
| } |
| return paths; |
| } |
| |
| PostmortemReportCollector::CollectionStatus |
| PostmortemReportCollector::CollectAndSubmit( |
| const crashpad::UUID& client_id, |
| const FilePath& file, |
| crashpad::CrashReportDatabase* report_database) { |
| DCHECK_NE(nullptr, report_database); |
| |
| // Note: the code below involves two notions of report: chrome internal state |
| // reports and the crashpad reports they get wrapped into. |
| |
| // Collect the data from the debug file to a proto. Note: a non-empty report |
| // is interpreted here as an unclean exit. |
| std::unique_ptr<StabilityReport> report_proto; |
| CollectionStatus status = Collect(file, &report_proto); |
| if (status != SUCCESS) { |
| // The file was empty, or there was an error collecting the data. Detailed |
| // logging happens within the Collect function. |
| if (!base::DeleteFile(file, false)) |
| DLOG(ERROR) << "Failed to delete " << file.value(); |
| return status; |
| } |
| DCHECK_NE(nullptr, report_proto.get()); |
| |
| // Prepare a crashpad report. |
| CrashReportDatabase::NewReport* new_report = nullptr; |
| CrashReportDatabase::OperationStatus database_status = |
| report_database->PrepareNewCrashReport(&new_report); |
| if (database_status != CrashReportDatabase::kNoError) { |
| // Assume this is recoverable: not deleting the file. |
| DLOG(ERROR) << "PrepareNewCrashReport failed"; |
| return PREPARE_NEW_CRASH_REPORT_FAILED; |
| } |
| CrashReportDatabase::CallErrorWritingCrashReport |
| call_error_writing_crash_report(report_database, new_report); |
| |
| // Write the report to a minidump. |
| if (!WriteReportToMinidump(report_proto.get(), client_id, new_report->uuid, |
| reinterpret_cast<FILE*>(new_report->handle))) { |
| // Assume this is not recoverable and delete the file. |
| if (!base::DeleteFile(file, false)) |
| DLOG(ERROR) << "Failed to delete " << file.value(); |
| return WRITE_TO_MINIDUMP_FAILED; |
| } |
| |
| // If the file cannot be deleted, do not report its contents. Note this can |
| // lead to under reporting and retries. However, under reporting is |
| // preferable to the over reporting that would happen with a file that |
| // cannot be deleted. |
| // TODO(manzagop): metrics for the number of non-deletable files. |
| if (!base::DeleteFile(file, false)) { |
| DLOG(ERROR) << "Failed to delete " << file.value(); |
| return DEBUG_FILE_DELETION_FAILED; |
| } |
| |
| // Finalize the report wrt the report database. Note that this doesn't trigger |
| // an immediate upload, but Crashpad will eventually upload the report (as of |
| // writing, the delay is on the order of up to 15 minutes). |
| call_error_writing_crash_report.Disarm(); |
| crashpad::UUID unused_report_id; |
| database_status = report_database->FinishedWritingCrashReport( |
| new_report, &unused_report_id); |
| if (database_status != CrashReportDatabase::kNoError) { |
| DLOG(ERROR) << "FinishedWritingCrashReport failed"; |
| return FINISHED_WRITING_CRASH_REPORT_FAILED; |
| } |
| |
| return SUCCESS; |
| } |
| |
| PostmortemReportCollector::CollectionStatus PostmortemReportCollector::Collect( |
| const base::FilePath& debug_state_file, |
| std::unique_ptr<StabilityReport>* report) { |
| DCHECK_NE(nullptr, report); |
| report->reset(); |
| |
| // Create a global analyzer. |
| std::unique_ptr<GlobalActivityAnalyzer> global_analyzer = |
| GlobalActivityAnalyzer::CreateWithFile(debug_state_file); |
| if (!global_analyzer) |
| return ANALYZER_CREATION_FAILED; |
| |
| // Early exit if there is no data. |
| std::vector<std::string> log_messages = global_analyzer->GetLogMessages(); |
| ActivityUserData::Snapshot global_data_snapshot = |
| global_analyzer->GetGlobalUserDataSnapshot(); |
| ThreadActivityAnalyzer* thread_analyzer = global_analyzer->GetFirstAnalyzer(); |
| if (log_messages.empty() && global_data_snapshot.empty() && |
| !thread_analyzer) { |
| return DEBUG_FILE_NO_DATA; |
| } |
| |
| // Create the report, then flesh it out. |
| report->reset(new StabilityReport()); |
| |
| // Collect log messages. |
| for (const std::string& message : log_messages) { |
| (*report)->add_log_messages(message); |
| } |
| |
| // Collect global user data. |
| google::protobuf::Map<std::string, TypedValue>& global_data = |
| *(*report)->mutable_global_data(); |
| CollectUserData(global_data_snapshot, &global_data, report->get()); |
| |
| // Add the reporting Chrome's details to the report. |
| global_data[kStabilityReporterChannel].set_string_value(channel_name()); |
| #if defined(ARCH_CPU_X86) |
| global_data[kStabilityReporterPlatform].set_string_value( |
| std::string("Win32")); |
| #elif defined(ARCH_CPU_X86_64) |
| global_data[kStabilityReporterPlatform].set_string_value( |
| std::string("Win64")); |
| #endif |
| global_data[kStabilityReporterProduct].set_string_value(product_name()); |
| global_data[kStabilityReporterVersion].set_string_value(version_number()); |
| |
| // Collect thread activity data. |
| // Note: a single process is instrumented. |
| ProcessState* process_state = (*report)->add_process_states(); |
| for (; thread_analyzer != nullptr; |
| thread_analyzer = global_analyzer->GetNextAnalyzer()) { |
| // Only valid analyzers are expected per contract of GetFirstAnalyzer / |
| // GetNextAnalyzer. |
| DCHECK(thread_analyzer->IsValid()); |
| |
| if (!process_state->has_process_id()) { |
| process_state->set_process_id( |
| thread_analyzer->activity_snapshot().process_id); |
| } |
| DCHECK_EQ(thread_analyzer->activity_snapshot().process_id, |
| process_state->process_id()); |
| |
| ThreadState* thread_state = process_state->add_threads(); |
| CollectThread(thread_analyzer->activity_snapshot(), thread_state); |
| } |
| |
| // Collect module information. |
| CollectModuleInformation(global_analyzer->GetModules(), process_state); |
| |
| return SUCCESS; |
| } |
| |
| void PostmortemReportCollector::CollectThread( |
| const base::debug::ThreadActivityAnalyzer::Snapshot& snapshot, |
| ThreadState* thread_state) { |
| DCHECK(thread_state); |
| |
| thread_state->set_thread_name(snapshot.thread_name); |
| thread_state->set_thread_id(snapshot.thread_id); |
| thread_state->set_activity_count(snapshot.activity_stack_depth); |
| |
| for (size_t i = 0; i < snapshot.activity_stack.size(); ++i) { |
| const base::debug::Activity& recorded = snapshot.activity_stack[i]; |
| Activity* collected = thread_state->add_activities(); |
| |
| // Collect activity |
| switch (recorded.activity_type) { |
| case base::debug::Activity::ACT_TASK_RUN: |
| collected->set_type(Activity::ACT_TASK_RUN); |
| collected->set_origin_address(recorded.origin_address); |
| collected->set_task_sequence_id(recorded.data.task.sequence_id); |
| break; |
| case base::debug::Activity::ACT_LOCK_ACQUIRE: |
| collected->set_type(Activity::ACT_LOCK_ACQUIRE); |
| collected->set_lock_address(recorded.data.lock.lock_address); |
| break; |
| case base::debug::Activity::ACT_EVENT_WAIT: |
| collected->set_type(Activity::ACT_EVENT_WAIT); |
| collected->set_event_address(recorded.data.event.event_address); |
| break; |
| case base::debug::Activity::ACT_THREAD_JOIN: |
| collected->set_type(Activity::ACT_THREAD_JOIN); |
| collected->set_thread_id(recorded.data.thread.thread_id); |
| break; |
| case base::debug::Activity::ACT_PROCESS_WAIT: |
| collected->set_type(Activity::ACT_PROCESS_WAIT); |
| collected->set_process_id(recorded.data.process.process_id); |
| break; |
| default: |
| break; |
| } |
| |
| // Collect user data |
| if (i < snapshot.user_data_stack.size()) { |
| CollectUserData(snapshot.user_data_stack[i], |
| collected->mutable_user_data(), nullptr); |
| } |
| } |
| } |
| |
| bool PostmortemReportCollector::WriteReportToMinidump( |
| StabilityReport* report, |
| const crashpad::UUID& client_id, |
| const crashpad::UUID& report_id, |
| base::PlatformFile minidump_file) { |
| DCHECK(report); |
| |
| return WritePostmortemDump(minidump_file, client_id, report_id, report); |
| } |
| |
| } // namespace browser_watcher |