isle-portable/tools/patch_c2.py
Anonymous Maarten ccb6223d70
Decompiled CONFIG.EXE executable ()
* mxdirectdraw: no need to explicitly add a terminating '\0' in C

* mxstopwatch must include LIMITS.H for ULONG_MAX

* Add Config app

* 88.78%

* style fixes

* Test more CONFIG things

* Add a few assertions on MFC classes

* reformat

* actionSSSSSSSSSSSSSSS

* actions again

* decomplint needed a shebang

* Fix annotations of Message Map entries

* ci: We're building CONFIG.EXE, not CONFIG.DLL

* remove ninja.exe

* Fix CAboutDialog::GetMessageMap annotation

* format reloaded

* Fix global CConfigApp object annotation

* trigger worflows

* ci: request at least python 3

* oops :)

* curl CONFIGPROGRESS-OLD.TXT will fail

* Forget about actions/setup-python (for now)

* Annotation fixes

* Config tweaks and MxDirect3d annotations

* It's important to compare against the correct file

* Introduce common CDialog parent for CAboutDialog and CMainDialog

* format

* Remove CSerializer

---------

Co-authored-by: disinvite <disinvite@users.noreply.github.com>
2024-02-07 12:11:45 +01:00

67 lines
1.9 KiB
Python
Executable file

#!/usr/bin/env python
import argparse
import hashlib
import pathlib
import shutil
ORIGINAL_C2_MD5 = "dcd69f1dd28b02dd03dd7ed02984299a" # original C2.EXE
C2_MD5 = (
ORIGINAL_C2_MD5,
"e70acde41802ddec06c4263bb357ac30", # patched C2.EXE
)
C2_SIZE = 549888
def main():
parser = argparse.ArgumentParser(
allow_abbrev=False,
description="Path to C2.EXE of Microsoft Visual Studio 4.2.0 to disable C4786 warning",
)
parser.add_argument("path", type=pathlib.Path, help="Path of C2.EXE")
parser.add_argument(
"-f", dest="force", default=False, action="store_true", help="force"
)
args = parser.parse_args()
if not args.path.is_file():
parser.error("Input is not a file")
binary = bytearray(args.path.open("rb").read())
md5 = hashlib.md5(binary).hexdigest()
print(md5, C2_MD5)
msg_cb = parser.error if not args.force else print
if len(binary) != C2_SIZE:
msg_cb("file size is not correct")
if md5 not in C2_MD5:
msg_cb("md5 checksum does not match")
if md5 == ORIGINAL_C2_MD5:
backup = f"{args.path}.BAK"
print(f'Creating backup "{backup}"')
shutil.copyfile(args.path, backup)
def nop_patch(start, count, expected=None):
replacement = [0x90] * count
if expected:
current = list(binary[start : start + count])
assert len(expected) == count
assert current in (expected, replacement)
print(f"Nopping {count} bytes at 0x{start:08x}")
binary[start : start + count] = replacement
print(
"Disable C4786 warning: '%Fs' : identifier was truncated to '%d' characters in the debug information"
)
nop_patch(0x52F07, 5, [0xE8, 0x4F, 0xB3, 0xFE, 0xFF]) # 0x00453b07
nop_patch(0x74832, 5, [0xE8, 0x24, 0x9A, 0xFC, 0xFF]) # 0x00475432
args.path.open("wb").write(binary)
print("done")
if __name__ == "__main__":
raise SystemExit(main())