#!~/.wine/drive_c/Python25/python.exe
# -*- coding: utf-8 -*-

# Copyright (c) 2009-2014, Mario Vilas
# 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 the copyright holder 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.

# $Id$

from winappdbg import Debug, EventHandler, HexDump, CrashDump, win32


class MyEventHandler( EventHandler ):


    # Create process events go here.
    def create_process( self, event ):

        # Start tracing the main thread.
        event.debug.start_tracing( event.get_tid() )


    # Create thread events go here.
    def create_thread( self, event ):

        # Start tracing the new thread.
        event.debug.start_tracing( event.get_tid() )


    # Single step events go here.
    def single_step( self, event ):

        # Show the user where we're running.
        thread = event.get_thread()
        pc     = thread.get_pc()
        code   = thread.disassemble( pc, 0x10 ) [0]
        bits   = event.get_process().get_bits()
        print "%s: %s" % ( HexDump.address(code[0], bits), code[2].lower() )


def simple_debugger( argv ):

    # Instance a Debug object using the "with" statement.
    # Note how we don't need to call "debug.stop()" anymore.
    with Debug( MyEventHandler(), bKillOnExit = True ) as debug:

        # Start a new process for debugging.
        debug.execv( argv )

        # Wait for the debugee to finish.
        debug.loop()


# When invoked from the command line,
# the first argument is an executable file,
# and the remaining arguments are passed to the newly created process.
if __name__ == "__main__":
    import sys
    simple_debugger( sys.argv[1:] )