freebsd-skq/libexec/ftpd/blacklist.c
Kurt Lidl 504422fab3 Update blacklist support in ftpd to clarify fd usage
The ftp daemon dups the control socket to stdin and uses that fd
throughout the code.  Clarify this usage slightly by changing from
explicit use of "0" for the fd to a variable, to make it clear what
the zero represents in the non-blacklist code. Make the
blacklist_notify routine use STDIN_FILENO so as to have less of a
"magic number" feel to the code.

Reviewed by:	cem
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D6716
2016-06-06 20:00:13 +00:00

54 lines
1.8 KiB
C

/*-
* Copyright (c) 2016 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Kurt Lidl under sponsorship from the
* FreeBSD Foundation.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. */
/* $FreeBSD$ */
#include <ctype.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>
#include "blacklist_client.h"
#include <blacklist.h>
static struct blacklist *blstate;
void
blacklist_init(void)
{
blstate = blacklist_open();
}
void
blacklist_notify(int action, int fd, char *msg)
{
if (blstate == NULL)
return;
(void)blacklist_r(blstate, action, fd, msg);
}