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// Copyright (c) 2010 Google Inc.

// All rights reserved.

//

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are

// met:

//

//     * Redistributions of source code must retain the above copyright

// notice, this list of conditions and the following disclaimer.

//     * Redistributions in binary form must reproduce the above

// copyright notice, this list of conditions and the following disclaimer

// in the documentation and/or other materials provided with the

// distribution.

//     * Neither the name of Google Inc. nor the names of its

// contributors may be used to endorse or promote products derived from

// this software without specific prior written permission.

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// exploitability_engine.h: Generic exploitability engine.

//

// The Exploitability class is an abstract base class providing common

// generic methods that apply to exploitability engines for specific platforms.

// Specific implementations will extend this class by providing run

// methods to fill in the exploitability_ enumeration of the ProcessState

// for a crash.

//

// Author: Cris Neckar

#ifndef GOOGLE_BREAKPAD_PROCESSOR_EXPLOITABILITY_H_

#define GOOGLE_BREAKPAD_PROCESSOR_EXPLOITABILITY_H_

#include "google_breakpad/common/breakpad_types.h"

#include "google_breakpad/processor/minidump.h"

#include "google_breakpad/processor/process_state.h"

namespace google_breakpad {

class Exploitability {

 public:

  virtual ~Exploitability() {}

  static Exploitability *ExploitabilityForPlatform(Minidump *dump,

                                                   ProcessState *process_state);

  // The boolean parameter signals whether the exploitability engine is

  // enabled to call out to objdump for disassembly. This is disabled by

  // default. It is used to check the identity of the instruction that

  // caused the program to crash. This should not be enabled if there are

  // portability concerns.

  static Exploitability *ExploitabilityForPlatform(Minidump *dump,

                                                   ProcessState *process_state,

                                                   bool enable_objdump);

  ExploitabilityRating CheckExploitability();

  bool AddressIsAscii(uint64_t);

 protected:

  Exploitability(Minidump *dump,

                 ProcessState *process_state);

  Minidump *dump_;

  ProcessState *process_state_;

  SystemInfo *system_info_;

 private:

  virtual ExploitabilityRating CheckPlatformExploitability() = 0;

};

}  // namespace google_breakpad

#endif  // GOOGLE_BREAKPAD_PROCESSOR_EXPLOITABILITY_H_