crashpad/snapshot/sanitized/memory_snapshot_sanitized.h
Peter Boström 1aa478d161 Remove DISALLOW_* macros in crashpad
This change was partially scripted and partially done manually with vim
regex + manually placing the deleted constructors.

The script change looked for destructors in the public: section of a
class, if that existed the deleted constructors would go before the
destructor.

For manual placement I looked for any constructor in the public: section
of the corresponding class. If there wasn't one, then it would ideally
have gone as the first entry except below enums, classes and typedefs.
This may not have been perfect, but is hopefully good enough. Fingers
crossed.

#include "base/macros.h" is removed from files that don't use
ignore_result, which is the only other thing defined in base/macros.h.

Bug: chromium:1010217
Change-Id: I099526255a40b1ac1264904b4ece2f3f503c9418
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3171034
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Peter Boström <pbos@chromium.org>
2021-09-21 15:09:44 +00:00

76 lines
2.6 KiB
C++

// 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_MEMORY_SNAPSHOT_SANITIZED_H_
#define CRASHPAD_SNAPSHOT_SANITIZED_MEMORY_SNAPSHOT_SANITIZED_H_
#include <stdint.h>
#include "snapshot/memory_snapshot.h"
#include "util/misc/range_set.h"
namespace crashpad {
namespace internal {
//! \brief A MemorySnapshot which wraps and filters sensitive information from
//! another MemorySnapshot.
//!
//! This class redacts all data from the wrapped MemorySnapshot unless:
//! 1. The data is pointer aligned and points into an allowed address range.
//! 2. The data is pointer aligned and is a small integer.
class MemorySnapshotSanitized final : public MemorySnapshot {
public:
//! \brief Redacted data is replaced with this value, casted to the
//! appropriate size for a pointer in the target process.
static constexpr uint64_t kDefaced = 0x0defaced0defaced;
//! \brief Pointer-aligned data smaller than this value is not redacted.
static constexpr uint64_t kSmallWordMax = 4096;
//! \brief Constructs this object.
//!
//! \param[in] snapshot The MemorySnapshot to sanitize.
//! \param[in] ranges A set of allowed address ranges.
//! \param[in] is_64_bit `true` if this memory is for a 64-bit process.
MemorySnapshotSanitized(const MemorySnapshot* snapshot,
RangeSet* ranges,
bool is_64_bit);
MemorySnapshotSanitized(const MemorySnapshotSanitized&) = delete;
MemorySnapshotSanitized& operator=(const MemorySnapshotSanitized&) = delete;
~MemorySnapshotSanitized() override;
// MemorySnapshot:
uint64_t Address() const override;
size_t Size() const override;
bool Read(Delegate* delegate) const override;
const MemorySnapshot* MergeWithOtherSnapshot(
const MemorySnapshot* other) const override {
return nullptr;
}
private:
const MemorySnapshot* snapshot_;
RangeSet* ranges_;
bool is_64_bit_;
};
} // namespace internal
} // namespace crashpad
#endif // CRASHPAD_SNAPSHOT_SANITIZED_MEMORY_SNAPSHOT_SANITIZED_H_