#!/usr/bin/python3
# -*- coding: utf-8 -*-

# Copyright (c) 2009-2025, 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.

from winappdbg.win32 import (
    DWORD,
    SIZE_T,
    TH32CS_SNAPHEAPLIST,
    CreateToolhelp32Snapshot,
    Heap32First,
    Heap32ListFirst,
    Heap32ListNext,
    Heap32Next,
    sizeof,
)


def print_heap_blocks(pid):
    # Determine if we have 32 bit or 64 bit pointers.
    if sizeof(SIZE_T) == sizeof(DWORD):
        fmt = "%.8x\t%.8x\t%.8x"
        hdr = "%-8s\t%-8s\t%-8s"
    else:
        fmt = "%.16x\t%.16x\t%.16x"
        hdr = "%-16s\t%-16s\t%-16s"

    # Print a banner.
    print("Heaps for process %d:" % pid)
    print(hdr % ("Heap ID", "Address", "Size"))

    # Create a snapshot of the process, only take the heap list.
    hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPHEAPLIST, pid)

    # Enumerate the heaps.
    heap = Heap32ListFirst(hSnapshot)
    while heap is not None:
        # For each heap, enumerate the entries.
        entry = Heap32First(heap.th32ProcessID, heap.th32HeapID)
        while entry is not None:
            # Print the heap id and the entry address and size.
            print(fmt % (entry.th32HeapID, entry.dwAddress, entry.dwBlockSize))

            # Next entry in the heap.
            entry = Heap32Next(entry)

        # Next heap in the list.
        heap = Heap32ListNext(hSnapshot)

    # No need to call CloseHandle, the handle is closed automatically when it goes out of scope.
    return


# When invoked from the command line,
# take the first argument as a process ID.
if __name__ == "__main__":
    import sys

    print_heap_blocks(int(sys.argv[1]))