| // Copyright 2018 The Crashpad Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "handler/linux/crash_report_exception_handler.h" |
| |
| #include <vector> |
| |
| #include "base/logging.h" |
| #include "client/settings.h" |
| #include "minidump/minidump_file_writer.h" |
| #include "snapshot/crashpad_info_client_options.h" |
| #include "snapshot/linux/process_snapshot_linux.h" |
| #include "util/linux/direct_ptrace_connection.h" |
| #include "util/linux/ptrace_client.h" |
| #include "util/misc/metrics.h" |
| #include "util/misc/tri_state.h" |
| #include "util/misc/uuid.h" |
| |
| namespace crashpad { |
| |
| CrashReportExceptionHandler::CrashReportExceptionHandler( |
| CrashReportDatabase* database, |
| CrashReportUploadThread* upload_thread, |
| const std::map<std::string, std::string>* process_annotations, |
| const UserStreamDataSources* user_stream_data_sources) |
| : database_(database), |
| upload_thread_(upload_thread), |
| process_annotations_(process_annotations), |
| user_stream_data_sources_(user_stream_data_sources) {} |
| |
| CrashReportExceptionHandler::~CrashReportExceptionHandler() = default; |
| |
| bool CrashReportExceptionHandler::HandleException( |
| pid_t client_process_id, |
| VMAddress exception_info_address) { |
| Metrics::ExceptionEncountered(); |
| |
| DirectPtraceConnection connection; |
| if (!connection.Initialize(client_process_id)) { |
| Metrics::ExceptionCaptureResult( |
| Metrics::CaptureResult::kDirectPtraceFailed); |
| return false; |
| } |
| |
| return HandleExceptionWithConnection(&connection, exception_info_address); |
| } |
| |
| bool CrashReportExceptionHandler::HandleExceptionWithBroker( |
| pid_t client_process_id, |
| VMAddress exception_info_address, |
| int broker_sock) { |
| Metrics::ExceptionEncountered(); |
| |
| PtraceClient client; |
| if (client.Initialize(broker_sock, client_process_id)) { |
| Metrics::ExceptionCaptureResult( |
| Metrics::CaptureResult::kBrokeredPtraceFailed); |
| return false; |
| } |
| |
| return HandleExceptionWithConnection(&client, exception_info_address); |
| } |
| |
| bool CrashReportExceptionHandler::HandleExceptionWithConnection( |
| PtraceConnection* connection, |
| VMAddress exception_info_address) { |
| ProcessSnapshotLinux process_snapshot; |
| if (!process_snapshot.Initialize(connection)) { |
| Metrics::ExceptionCaptureResult(Metrics::CaptureResult::kSnapshotFailed); |
| return false; |
| } |
| |
| if (!process_snapshot.InitializeException(exception_info_address)) { |
| Metrics::ExceptionCaptureResult( |
| Metrics::CaptureResult::kExceptionInitializationFailed); |
| return false; |
| } |
| |
| Metrics::ExceptionCode(process_snapshot.Exception()->Exception()); |
| |
| CrashpadInfoClientOptions client_options; |
| process_snapshot.GetCrashpadOptions(&client_options); |
| if (client_options.crashpad_handler_behavior != TriState::kDisabled) { |
| UUID client_id; |
| Settings* const settings = database_->GetSettings(); |
| if (settings) { |
| // If GetSettings() or GetClientID() fails, something else will log a |
| // message and client_id will be left at its default value, all zeroes, |
| // which is appropriate. |
| settings->GetClientID(&client_id); |
| } |
| |
| process_snapshot.SetClientID(client_id); |
| process_snapshot.SetAnnotationsSimpleMap(*process_annotations_); |
| |
| std::unique_ptr<CrashReportDatabase::NewReport> new_report; |
| CrashReportDatabase::OperationStatus database_status = |
| database_->PrepareNewCrashReport(&new_report); |
| if (database_status != CrashReportDatabase::kNoError) { |
| LOG(ERROR) << "PrepareNewCrashReport failed"; |
| Metrics::ExceptionCaptureResult( |
| Metrics::CaptureResult::kPrepareNewCrashReportFailed); |
| return false; |
| } |
| |
| process_snapshot.SetReportID(new_report->ReportID()); |
| |
| MinidumpFileWriter minidump; |
| minidump.InitializeFromSnapshot(&process_snapshot); |
| AddUserExtensionStreams( |
| user_stream_data_sources_, &process_snapshot, &minidump); |
| |
| if (!minidump.WriteEverything(new_report->Writer())) { |
| LOG(ERROR) << "WriteEverything failed"; |
| Metrics::ExceptionCaptureResult( |
| Metrics::CaptureResult::kMinidumpWriteFailed); |
| return false; |
| } |
| |
| UUID uuid; |
| database_status = |
| database_->FinishedWritingCrashReport(std::move(new_report), &uuid); |
| if (database_status != CrashReportDatabase::kNoError) { |
| LOG(ERROR) << "FinishedWritingCrashReport failed"; |
| Metrics::ExceptionCaptureResult( |
| Metrics::CaptureResult::kFinishedWritingCrashReportFailed); |
| return false; |
| } |
| |
| if (upload_thread_) { |
| upload_thread_->ReportPending(uuid); |
| } else { |
| database_->SkipReportUpload( |
| uuid, Metrics::CrashSkippedReason::kUploadsDisabled); |
| } |
| } |
| |
| Metrics::ExceptionCaptureResult(Metrics::CaptureResult::kSuccess); |
| return true; |
| } |
| |
| } // namespace crashpad |