PAGE_PROTECTION.hh

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/*
 * Copyright 2021 Assured Information Security, Inc.
 *
 * 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.
 */
#pragma once
 
#include <introvirt/util/json/json.hh>
 
#include <cstdint>
#include <memory>
#include <string>
 
namespace introvirt {
namespace windows {
namespace nt {
 
/* TODO(papes): Clean up the PAGE_PROTECTION class */
 
class PAGE_PROTECTION final {
  public:
    enum PageProtectionFlag {
        UNKNOWN = 0x00,
        PAGE_NOACCESS = 0x01,
        PAGE_READONLY = 0x02,
        PAGE_READWRITE = 0x04,
        PAGE_WRITECOPY = 0x08,
        PAGE_EXECUTE = 0x10,
        PAGE_EXECUTE_READ = 0x20,
        PAGE_EXECUTE_READWRITE = 0x40,
        PAGE_EXECUTE_WRITECOPY = 0x80,
        PAGE_GUARD = 0x100,
        PAGE_NOCACHE = 0x200,
        PAGE_WRITECOMBINE = 0x400
    };
 
    static PAGE_PROTECTION fromVadProtection(uint32_t protection);
 
    bool operator==(const PAGE_PROTECTION& other) const;
 
    PAGE_PROTECTION& operator=(const PAGE_PROTECTION& other);
 
    bool isExecutable() const;
 
    bool isWritable() const;
 
    bool isReadable() const;
 
    bool isCopyOnWrite() const;
 
    bool isRWX() const;
 
    void clearExecutable();
 
    void clearWritable();
 
    void changeToCopyOnWrite();
 
    uint32_t value() const;
 
    operator uint32_t() const;
 
    std::string string() const;
 
    PAGE_PROTECTION(uint32_t protection = 0);
 
    PAGE_PROTECTION(PageProtectionFlag flag);
 
    PAGE_PROTECTION(const PAGE_PROTECTION& other);
 
    ~PAGE_PROTECTION();
 
  private:
    uint32_t protection_;
};
 
std::string to_string(PAGE_PROTECTION prot);
 
std::ostream& operator<<(std::ostream&, PAGE_PROTECTION prot);
 
} // namespace nt
} // namespace windows
} // namespace introvirt