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// 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.
#ifndef CRASHPAD_SNAPSHOT_SANITIZED_PROCESS_SNAPSHOT_SANITIZED_H_
#define CRASHPAD_SNAPSHOT_SANITIZED_PROCESS_SNAPSHOT_SANITIZED_H_
#include <memory>
#include <string>
#include <vector>
#include "base/macros.h"
#include "snapshot/exception_snapshot.h"
#include "snapshot/process_snapshot.h"
#include "snapshot/sanitized/module_snapshot_sanitized.h"
#include "snapshot/sanitized/thread_snapshot_sanitized.h"
#include "snapshot/thread_snapshot.h"
#include "snapshot/unloaded_module_snapshot.h"
#include "util/misc/address_types.h"
#include "util/misc/initialization_state_dcheck.h"
#include "util/misc/range_set.h"
#include "util/process/process_id.h"
#include "util/process/process_memory_sanitized.h"
namespace crashpad {
//! \brief A ProcessSnapshot which wraps and filters sensitive information from
//! another ProcessSnapshot.
class ProcessSnapshotSanitized final : public ProcessSnapshot {
public:
ProcessSnapshotSanitized();
~ProcessSnapshotSanitized() override;
//! \brief Initializes this object.
//!
//! This method must be successfully called before calling any other method on
//! this object.
//!
//! \param[in] snapshot The ProcessSnapshot to sanitize.
//! \param[in] annotations_whitelist A list of annotations names to allow to
//! be returned by AnnotationsSimpleMap() or from this object's module
//! snapshots. If `nullptr`, all annotations will be returned.
//! \param[in] target_module_address An address in the target process'
//! address space within the bounds of a module to target. If the
//! crashing thread's context and stack do not contain any pointers into
//! this module's address range, this method will return `false`. If this
//! value is 0, this method will not check the context or stack for
//! references to any particular module.
//! \param[in] sanitize_stacks If `true`, the MemorySnapshots for each
//! thread's stack will be filtered using an
//! internal::StackSnapshotSanitized.
//! \return `false` if \a snapshot does not meet sanitization requirements and
//! should be filtered entirely. Otherwise `true`.
bool Initialize(
const ProcessSnapshot* snapshot,
std::unique_ptr<const std::vector<std::string>> annotations_whitelist,
std::unique_ptr<const std::vector<std::pair<VMAddress, VMAddress>>>
memory_range_whitelist,
VMAddress target_module_address,
bool sanitize_stacks);
// ProcessSnapshot:
crashpad::ProcessID ProcessID() const override;
crashpad::ProcessID ParentProcessID() const override;
void SnapshotTime(timeval* snapshot_time) const override;
void ProcessStartTime(timeval* start_time) const override;
void ProcessCPUTimes(timeval* user_time, timeval* system_time) const override;
void ReportID(UUID* report_id) const override;
void ClientID(UUID* client_id) const override;
const std::map<std::string, std::string>& AnnotationsSimpleMap()
const override;
const SystemSnapshot* System() const override;
std::vector<const ThreadSnapshot*> Threads() const override;
std::vector<const ModuleSnapshot*> Modules() const override;
std::vector<UnloadedModuleSnapshot> UnloadedModules() const override;
const ExceptionSnapshot* Exception() const override;
std::vector<const MemoryMapRegionSnapshot*> MemoryMap() const override;
std::vector<HandleSnapshot> Handles() const override;
std::vector<const MemorySnapshot*> ExtraMemory() const override;
const ProcessMemory* Memory() const override;
private:
// Only used when annotations_whitelist_ != nullptr.
std::vector<std::unique_ptr<internal::ModuleSnapshotSanitized>> modules_;
// Only used when sanitize_stacks_ == true.
std::vector<std::unique_ptr<internal::ThreadSnapshotSanitized>> threads_;
RangeSet address_ranges_;
const ProcessSnapshot* snapshot_;
ProcessMemorySanitized process_memory_;
std::unique_ptr<const std::vector<std::string>> annotations_whitelist_;
bool sanitize_stacks_;
InitializationStateDcheck initialized_;
DISALLOW_COPY_AND_ASSIGN(ProcessSnapshotSanitized);
};
} // namespace crashpad
#endif // CRASHPAD_SNAPSHOT_SANITIZED_PROCESS_SNAPSHOT_SANITIZED_H_