119 lines
4.3 KiB
C++
119 lines
4.3 KiB
C++
// Copyright 2019 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "handler/linux/capture_snapshot.h"
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#include <utility>
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#include "snapshot/crashpad_info_client_options.h"
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#include "snapshot/sanitized/sanitization_information.h"
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#include "util/misc/metrics.h"
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#include "util/misc/tri_state.h"
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namespace crashpad {
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bool CaptureSnapshot(
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PtraceConnection* connection,
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const ExceptionHandlerProtocol::ClientInformation& info,
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const std::map<std::string, std::string>& process_annotations,
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uid_t client_uid,
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VMAddress requesting_thread_stack_address,
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pid_t* requesting_thread_id,
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std::unique_ptr<ProcessSnapshotLinux>* snapshot,
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std::unique_ptr<ProcessSnapshotSanitized>* sanitized_snapshot) {
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std::unique_ptr<ProcessSnapshotLinux> process_snapshot(
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new ProcessSnapshotLinux());
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if (!process_snapshot->Initialize(connection)) {
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Metrics::ExceptionCaptureResult(Metrics::CaptureResult::kSnapshotFailed);
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return false;
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}
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pid_t local_requesting_thread_id = -1;
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if (requesting_thread_stack_address) {
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local_requesting_thread_id = process_snapshot->FindThreadWithStackAddress(
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requesting_thread_stack_address);
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}
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if (requesting_thread_id) {
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*requesting_thread_id = local_requesting_thread_id;
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}
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if (!process_snapshot->InitializeException(info.exception_information_address,
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local_requesting_thread_id)) {
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Metrics::ExceptionCaptureResult(
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Metrics::CaptureResult::kExceptionInitializationFailed);
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return false;
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}
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Metrics::ExceptionCode(process_snapshot->Exception()->Exception());
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CrashpadInfoClientOptions client_options;
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process_snapshot->GetCrashpadOptions(&client_options);
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if (client_options.crashpad_handler_behavior == TriState::kDisabled) {
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return false;
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}
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for (auto& p : process_annotations) {
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process_snapshot->AddAnnotation(p.first, p.second);
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}
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if (info.sanitization_information_address) {
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SanitizationInformation sanitization_info;
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ProcessMemoryRange range;
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if (!range.Initialize(connection->Memory(), connection->Is64Bit()) ||
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!range.Read(info.sanitization_information_address,
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sizeof(sanitization_info),
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&sanitization_info)) {
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Metrics::ExceptionCaptureResult(
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Metrics::CaptureResult::kSanitizationInitializationFailed);
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return false;
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}
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auto allowed_annotations = std::make_unique<std::vector<std::string>>();
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auto allowed_memory_ranges =
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std::make_unique<std::vector<std::pair<VMAddress, VMAddress>>>();
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if (!ReadAllowedAnnotations(range,
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sanitization_info.allowed_annotations_address,
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allowed_annotations.get()) ||
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!ReadAllowedMemoryRanges(
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range,
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sanitization_info.allowed_memory_ranges_address,
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allowed_memory_ranges.get())) {
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Metrics::ExceptionCaptureResult(
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Metrics::CaptureResult::kSanitizationInitializationFailed);
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return false;
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}
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std::unique_ptr<ProcessSnapshotSanitized> sanitized(
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new ProcessSnapshotSanitized());
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if (!sanitized->Initialize(process_snapshot.get(),
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sanitization_info.allowed_annotations_address
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? std::move(allowed_annotations)
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: nullptr,
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std::move(allowed_memory_ranges),
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sanitization_info.target_module_address,
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sanitization_info.sanitize_stacks)) {
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Metrics::ExceptionCaptureResult(
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Metrics::CaptureResult::kSkippedDueToSanitization);
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return false;
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}
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*sanitized_snapshot = std::move(sanitized);
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}
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*snapshot = std::move(process_snapshot);
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return true;
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}
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} // namespace crashpad
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