NetBSD/libexec/talkd/extern.h
itojun 89b1e287f7 find_user() in process.c does an unbounded copy into a destination
buffer that is smaller in size than the source buffer.

also, there is no guarantee that any of the string components of
the request packet are null terminated.

in some cases, not all elements of the response buffer are
explicitly set. specifically pad and addr. a talk client can spy to
see which host is talking to which host by sending out regular
packets, to which talkd responds without clearing the addr element.

from xs@kittenz.org
2002-09-19 14:39:51 +00:00

55 lines
2.3 KiB
C

/* $NetBSD: extern.h,v 1.3 2002/09/19 14:39:51 itojun Exp $ */
/*
* Copyright (c) 1997 Christos Zoulas. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christos Zoulas.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/* announce.c */
int announce __P((CTL_MSG *, char *));
int print_mesg __P((char *, CTL_MSG *, char *));
/* print.c */
void print_request __P((char *, CTL_MSG *));
void print_response __P((char *, CTL_RESPONSE *));
/* process.c */
void process_request __P((CTL_MSG *, CTL_RESPONSE *));
void do_announce __P((CTL_MSG *, CTL_RESPONSE *));
int find_user __P((char *, char *, size_t));
/* table.c */
CTL_MSG *find_match __P((CTL_MSG *));
CTL_MSG *find_request __P((CTL_MSG *));
void insert_table __P((CTL_MSG *, CTL_RESPONSE *));
int new_id __P((void));
int delete_invite __P((int));
/* talkd.c */
extern int debug;
extern int logging;