Mercurial > vim
view src/testdir/test_channel_unix.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 | cdd13ed3e5cb |
children |
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#!/usr/bin/env python # # Server that will accept connections from a Vim channel. # Used by test_channel.vim. # # This requires Python 2.6 or later. from __future__ import print_function from test_channel import ThreadedTCPServer, TestingRequestHandler, \ writePortInFile import socket import threading import os try: FileNotFoundError except NameError: # Python 2 FileNotFoundError = (IOError, OSError) if not hasattr(socket, "AF_UNIX"): raise NotImplementedError("Unix sockets are not supported on this platform") class ThreadedUnixServer(ThreadedTCPServer): address_family = socket.AF_UNIX class ThreadedUnixRequestHandler(TestingRequestHandler): pass def main(path): server = ThreadedUnixServer(path, ThreadedUnixRequestHandler) # Start a thread with the server. That thread will then start a new thread # for each connection. server_thread = threading.Thread(target=server.serve_forever) server_thread.start() # Signal the test harness we're ready, the port value has no meaning. writePortInFile(1234) print("Listening on {0}".format(server.server_address)) # Main thread terminates, but the server continues running # until server.shutdown() is called. try: while server_thread.is_alive(): server_thread.join(1) except (KeyboardInterrupt, SystemExit): server.shutdown() if __name__ == "__main__": try: os.remove("Xtestsocket") except FileNotFoundError: pass main("Xtestsocket")