Mercurial > vim
view src/testdir/test_makeencoding.py @ 33776:9503dc55b5ed v9.0.2108
patch 9.0.2108: [security]: overflow with count for :s command
Commit: https://github.com/vim/vim/commit/ac63787734fda2e294e477af52b3bd601517fa78
Author: Christian Brabandt <cb@256bit.org>
Date: Tue Nov 14 20:45:48 2023 +0100
patch 9.0.2108: [security]: overflow with count for :s command
Problem: [security]: overflow with count for :s command
Solution: Abort the :s command if the count is too large
If the count after the :s command is larger than what fits into a
(signed) long variable, abort with e_value_too_large.
Adds a test with INT_MAX as count and verify it correctly fails.
It seems the return value on Windows using mingw compiler wraps around,
so the initial test using :s/./b/9999999999999999999999999990 doesn't
fail there, since the count is wrapping around several times and finally
is no longer larger than 2147483647. So let's just use 2147483647 in the
test, which hopefully will always cause a failure
Signed-off-by: Christian Brabandt <cb@256bit.org>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Thu, 16 Nov 2023 22:15:10 +0100 |
parents | e71d3bdf3bc3 |
children |
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#!/usr/bin/python # -*- coding: utf-8 -*- # Test program for :make, :grep and :cgetfile. from __future__ import print_function, unicode_literals import locale import io import sys def set_output_encoding(enc=None): """Set the encoding of stdout and stderr arguments: enc -- Encoding name. If omitted, locale.getpreferredencoding() is used. """ if enc is None: enc = locale.getpreferredencoding() def get_text_writer(fo, **kwargs): kw = dict(kwargs) kw.setdefault('errors', 'backslashreplace') # use \uXXXX style kw.setdefault('closefd', False) if sys.version_info[0] < 3: # Work around for Python 2.x # New line conversion isn't needed here. Done in somewhere else. writer = io.open(fo.fileno(), mode='w', newline='', **kw) write = writer.write # save the original write() function enc = locale.getpreferredencoding() def convwrite(s): if isinstance(s, bytes): write(s.decode(enc)) # convert to unistr else: write(s) try: writer.flush() # needed on Windows except IOError: pass writer.write = convwrite else: writer = io.open(fo.fileno(), mode='w', **kw) return writer sys.stdout = get_text_writer(sys.stdout, encoding=enc) sys.stderr = get_text_writer(sys.stderr, encoding=enc) def main(): enc = 'utf-8' if len(sys.argv) > 1: enc = sys.argv[1] set_output_encoding(enc) message_tbl = { 'utf-8': 'ÀÈÌÒÙ こんにちは 你好', 'latin1': 'ÀÈÌÒÙ', 'cp932': 'こんにちは', 'cp936': '你好', } print('Xfoobar.c(10) : %s (%s)' % (message_tbl[enc], enc)) if __name__ == "__main__": main()