// Copyright 2018 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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#ifndef CRASHPAD_UTIL_PROCESS_PROCESS_MEMORY_WIN_H_
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#define CRASHPAD_UTIL_PROCESS_PROCESS_MEMORY_WIN_H_
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#include <windows.h>
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#include "base/macros.h"
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#include "util/misc/address_types.h"
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#include "util/misc/initialization_state_dcheck.h"
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#include "util/process/process_memory.h"
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#include "util/win/process_info.h"
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namespace crashpad {
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//! \brief Accesses the memory of another Windows process.
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class ProcessMemoryWin final : public ProcessMemory {
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public:
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ProcessMemoryWin();
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~ProcessMemoryWin();
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//! \brief Initializes this object to read the memory of a process with the
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//! provided handle.
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//!
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//! This method must be called successfully prior to calling any other method
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//! in this class.
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//!
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//! \param[in] handle The HANDLE of a target process.
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//!
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//! \return `true` on success, `false` on failure with a message logged.
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bool Initialize(HANDLE handle);
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//! \brief Attempts to read \a size bytes from the target process starting at
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//! address \a address into \a buffer. If some of the specified range is
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//! not accessible, reads up to the first inaccessible byte.
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//!
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//! \return The actual number of bytes read.
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size_t ReadAvailableMemory(VMAddress address,
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size_t num_bytes,
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void* buffer) const;
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private:
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ssize_t ReadUpTo(VMAddress address, size_t size, void* buffer) const override;
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HANDLE handle_;
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ProcessInfo process_info_;
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InitializationStateDcheck initialized_;
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DISALLOW_COPY_AND_ASSIGN(ProcessMemoryWin);
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};
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} // namespace crashpad
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#endif // CRASHPAD_UTIL_PROCESS_PROCESS_MEMORY_WIN_H_
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