785 lines
19 KiB
C
785 lines
19 KiB
C
/* $NetBSD: lpd.c,v 1.33 2002/01/21 14:42:29 wiz Exp $ */
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/*
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* Copyright (c) 1983, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1983, 1993, 1994\n\
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The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)lpd.c 8.7 (Berkeley) 5/10/95";
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#else
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__RCSID("$NetBSD: lpd.c,v 1.33 2002/01/21 14:42:29 wiz Exp $");
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#endif
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#endif /* not lint */
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/*
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* lpd -- line printer daemon.
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*
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* Listen for a connection and perform the requested operation.
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* Operations are:
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* \1printer\n
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* check the queue for jobs and print any found.
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* \2printer\n
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* receive a job from another machine and queue it.
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* \3printer [users ...] [jobs ...]\n
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* return the current state of the queue (short form).
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* \4printer [users ...] [jobs ...]\n
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* return the current state of the queue (long form).
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* \5printer person [users ...] [jobs ...]\n
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* remove jobs from the queue.
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*
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* Strategy to maintain protected spooling area:
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* 1. Spooling area is writable only by daemon and spooling group
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* 2. lpr runs setuid root and setgrp spooling group; it uses
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* root to access any file it wants (verifying things before
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* with an access call) and group id to know how it should
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* set up ownership of files in the spooling area.
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* 3. Files in spooling area are owned by root, group spooling
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* group, with mode 660.
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* 4. lpd, lpq and lprm run setuid daemon and setgrp spooling group to
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* access files and printer. Users can't get to anything
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* w/o help of lpq and lprm programs.
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*/
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#include <sys/param.h>
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#include <sys/wait.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <sys/stat.h>
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#include <sys/file.h>
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#include <netinet/in.h>
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#include <err.h>
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#include <netdb.h>
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#include <unistd.h>
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#include <syslog.h>
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#include <signal.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <dirent.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <arpa/inet.h>
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#include "lp.h"
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#include "lp.local.h"
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#include "pathnames.h"
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#include "extern.h"
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/* XXX from libc/net/rcmd.c */
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extern int __ivaliduser_sa __P((FILE *, struct sockaddr *, socklen_t,
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const char *, const char *));
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int lflag; /* log requests flag */
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int rflag; /* allow of for remote printers */
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int sflag; /* secure (no inet) flag */
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int from_remote; /* from remote socket */
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char **blist; /* list of addresses to bind(2) to */
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int blist_size;
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int blist_addrs;
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int main __P((int, char **));
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static void reapchild __P((int));
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static void mcleanup __P((int));
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static void doit __P((void));
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static void startup __P((void));
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static void chkhost __P((struct sockaddr *, int));
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static int ckqueue __P((char *));
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static void usage __P((void));
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static int *socksetup __P((int, int, const char *));
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uid_t uid, euid;
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int child_count;
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#define LPD_NOPORTCHK 0001 /* skip reserved-port check */
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int
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main(int argc, char **argv)
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{
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fd_set defreadfds;
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struct sockaddr_un un, fromunix;
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struct sockaddr_storage frominet;
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sigset_t nmask, omask;
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int lfd, errs, i, f, funix, *finet;
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int child_max = 32; /* more than enough to hose the system */
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int options = 0, check_options = 0;
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struct servent *sp;
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const char *port = "printer";
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euid = geteuid(); /* these shouldn't be different */
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uid = getuid();
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gethostname(host, sizeof(host));
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host[sizeof(host) - 1] = '\0';
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name = argv[0];
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errs = 0;
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while ((i = getopt(argc, argv, "b:cdln:srw:W")) != -1)
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switch (i) {
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case 'b':
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if (blist_addrs >= blist_size) {
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blist_size += sizeof(char *) * 4;
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if (blist == NULL)
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blist = malloc(blist_size);
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else
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blist = realloc(blist, blist_size);
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if (blist == NULL)
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err(1, "cant allocate bind addr list");
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}
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blist[blist_addrs++] = strdup(optarg);
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break;
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case 'd':
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options |= SO_DEBUG;
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break;
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case 'l':
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lflag++;
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break;
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case 'n':
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child_max = atoi(optarg);
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if (child_max < 0 || child_max > 1024)
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errx(1, "invalid number of children: %s",
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optarg);
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break;
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case 'r':
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rflag++;
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break;
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case 's':
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sflag++;
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break;
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case 'w':
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wait_time = atoi(optarg);
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if (wait_time < 0)
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errx(1, "wait time must be postive: %s",
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optarg);
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if (wait_time < 30)
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warnx("warning: wait time less than 30 seconds");
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break;
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case 'W':/* allow connections coming from a non-reserved port */
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/* (done by some lpr-implementations for MS-Windows) */
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check_options |= LPD_NOPORTCHK;
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break;
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default:
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errs++;
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}
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argc -= optind;
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argv += optind;
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if (errs)
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usage();
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switch (argc) {
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case 1:
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if ((i = atoi(argv[0])) == 0)
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usage();
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if (i < 0 || i > USHRT_MAX)
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errx(1, "port # %d is invalid", i);
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port = argv[0];
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break;
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case 0:
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sp = getservbyname(port, "tcp");
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if (sp == NULL)
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errx(1, "%s/tcp: unknown service", port);
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break;
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default:
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usage();
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}
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#ifndef DEBUG
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/*
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* Set up standard environment by detaching from the parent.
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*/
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daemon(0, 0);
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#endif
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openlog("lpd", LOG_PID, LOG_LPR);
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syslog(LOG_INFO, "restarted");
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(void)umask(0);
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lfd = open(_PATH_MASTERLOCK, O_WRONLY|O_CREAT, 0644);
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if (lfd < 0) {
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syslog(LOG_ERR, "%s: %m", _PATH_MASTERLOCK);
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exit(1);
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}
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if (flock(lfd, LOCK_EX|LOCK_NB) < 0) {
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if (errno == EWOULDBLOCK) /* active daemon present */
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exit(0);
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syslog(LOG_ERR, "%s: %m", _PATH_MASTERLOCK);
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exit(1);
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}
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ftruncate(lfd, 0);
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/*
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* write process id for others to know
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*/
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(void)snprintf(line, sizeof(line), "%u\n", getpid());
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f = strlen(line);
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if (write(lfd, line, f) != f) {
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syslog(LOG_ERR, "%s: %m", _PATH_MASTERLOCK);
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exit(1);
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}
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signal(SIGCHLD, reapchild);
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/*
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* Restart all the printers.
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*/
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startup();
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(void)unlink(_PATH_SOCKETNAME);
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funix = socket(AF_LOCAL, SOCK_STREAM, 0);
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if (funix < 0) {
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syslog(LOG_ERR, "socket: %m");
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exit(1);
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}
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sigemptyset(&nmask);
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sigaddset(&nmask, SIGHUP);
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sigaddset(&nmask, SIGINT);
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sigaddset(&nmask, SIGQUIT);
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sigaddset(&nmask, SIGTERM);
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sigprocmask(SIG_BLOCK, &nmask, &omask);
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(void) umask(07);
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signal(SIGHUP, mcleanup);
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signal(SIGINT, mcleanup);
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signal(SIGQUIT, mcleanup);
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signal(SIGTERM, mcleanup);
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memset(&un, 0, sizeof(un));
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un.sun_family = AF_LOCAL;
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strncpy(un.sun_path, _PATH_SOCKETNAME, sizeof(un.sun_path) - 1);
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#ifndef SUN_LEN
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#define SUN_LEN(unp) (strlen((unp)->sun_path) + 2)
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#endif
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if (bind(funix, (struct sockaddr *)&un, SUN_LEN(&un)) < 0) {
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syslog(LOG_ERR, "ubind: %m");
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exit(1);
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}
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(void) umask(0);
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sigprocmask(SIG_SETMASK, &omask, (sigset_t *)0);
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FD_ZERO(&defreadfds);
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FD_SET(funix, &defreadfds);
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listen(funix, 5);
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if (!sflag || blist_addrs)
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finet = socksetup(PF_UNSPEC, options, port);
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else
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finet = NULL; /* pretend we couldn't open TCP socket. */
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if (blist != NULL) {
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for (i = 0; i < blist_addrs; i++)
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free(blist[i]);
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free(blist);
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}
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if (finet) {
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for (i = 1; i <= *finet; i++) {
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FD_SET(finet[i], &defreadfds);
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listen(finet[i], 5);
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}
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}
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/*
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* Main loop: accept, do a request, continue.
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*/
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memset(&frominet, 0, sizeof(frominet));
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memset(&fromunix, 0, sizeof(fromunix));
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for (;;) {
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int domain, nfds, s, fromlen;
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fd_set readfds;
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/* "short" so it overflows in about 2 hours */
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short sleeptime = 10;
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while (child_max < child_count) {
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syslog(LOG_WARNING,
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"too many children, sleeping for %d seconds",
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sleeptime);
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sleep(sleeptime);
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sleeptime <<= 1;
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if (sleeptime < 0) {
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syslog(LOG_CRIT, "sleeptime overflowed! help!");
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sleeptime = 10;
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}
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}
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FD_COPY(&defreadfds, &readfds);
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nfds = select(20, &readfds, 0, 0, 0);
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if (nfds <= 0) {
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if (nfds < 0 && errno != EINTR)
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syslog(LOG_WARNING, "select: %m");
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continue;
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}
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if (FD_ISSET(funix, &readfds)) {
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domain = AF_LOCAL;
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fromlen = sizeof(fromunix);
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s = accept(funix,
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(struct sockaddr *)&fromunix, &fromlen);
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} else {
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for (i = 1; i <= *finet; i++)
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if (FD_ISSET(finet[i], &readfds)) {
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domain = AF_INET, fromlen = sizeof(frominet);
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s = accept(finet[i], (struct sockaddr *)&frominet, &fromlen);
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}
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}
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if (s < 0) {
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if (errno != EINTR)
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syslog(LOG_WARNING, "accept: %m");
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continue;
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}
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switch (fork()) {
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case 0:
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signal(SIGCHLD, SIG_IGN);
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signal(SIGHUP, SIG_IGN);
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signal(SIGINT, SIG_IGN);
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signal(SIGQUIT, SIG_IGN);
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signal(SIGTERM, SIG_IGN);
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(void)close(funix);
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if (!sflag && finet)
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for (i = 1; i <= *finet; i++)
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(void)close(finet[i]);
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dup2(s, 1);
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(void)close(s);
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if (domain == AF_INET) {
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/* for both AF_INET and AF_INET6 */
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from_remote = 1;
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chkhost((struct sockaddr *)&frominet, check_options);
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} else
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from_remote = 0;
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doit();
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exit(0);
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case -1:
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syslog(LOG_WARNING, "fork: %m, sleeping for 10 seconds...");
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sleep(10);
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continue;
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default:
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child_count++;
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}
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(void)close(s);
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}
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}
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static void
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reapchild(int signo)
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{
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union wait status;
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while (wait3((int *)&status, WNOHANG, 0) > 0)
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child_count--;
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}
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static void
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mcleanup(int signo)
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{
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if (lflag)
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syslog(LOG_INFO, "exiting");
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unlink(_PATH_SOCKETNAME);
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exit(0);
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}
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/*
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* Stuff for handling job specifications
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*/
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char *user[MAXUSERS]; /* users to process */
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int users; /* # of users in user array */
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int requ[MAXREQUESTS]; /* job number of spool entries */
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int requests; /* # of spool requests */
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char *person; /* name of person doing lprm */
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char fromb[NI_MAXHOST]; /* buffer for client's machine name */
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char cbuf[BUFSIZ]; /* command line buffer */
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char *cmdnames[] = {
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"null",
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"printjob",
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"recvjob",
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"displayq short",
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"displayq long",
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"rmjob"
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};
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static void
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doit(void)
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{
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char *cp;
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int n;
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for (;;) {
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cp = cbuf;
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do {
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if (cp >= &cbuf[sizeof(cbuf) - 1])
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fatal("Command line too long");
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if ((n = read(STDOUT_FILENO, cp, 1)) != 1) {
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if (n < 0)
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fatal("Lost connection");
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return;
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}
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} while (*cp++ != '\n');
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*--cp = '\0';
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cp = cbuf;
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if (lflag) {
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if (*cp >= '\1' && *cp <= '\5') {
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syslog(LOG_INFO, "%s requests %s %s",
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from, cmdnames[(int)*cp], cp+1);
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setproctitle("serving %s: %s %s", from,
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cmdnames[(int)*cp], cp+1);
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}
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else
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syslog(LOG_INFO, "bad request (%d) from %s",
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*cp, from);
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}
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switch (*cp++) {
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case '\1': /* check the queue and print any jobs there */
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printer = cp;
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if (*printer == '\0')
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printer = DEFLP;
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printjob();
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break;
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case '\2': /* receive files to be queued */
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if (!from_remote) {
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syslog(LOG_INFO, "illegal request (%d)", *cp);
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exit(1);
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}
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printer = cp;
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if (*printer == '\0')
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printer = DEFLP;
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recvjob();
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break;
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case '\3': /* display the queue (short form) */
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case '\4': /* display the queue (long form) */
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printer = cp;
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if (*printer == '\0')
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printer = DEFLP;
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while (*cp) {
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if (*cp != ' ') {
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cp++;
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continue;
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}
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*cp++ = '\0';
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while (isspace(*cp))
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cp++;
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if (*cp == '\0')
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break;
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if (isdigit(*cp)) {
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if (requests >= MAXREQUESTS)
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fatal("Too many requests");
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requ[requests++] = atoi(cp);
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} else {
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if (users >= MAXUSERS)
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fatal("Too many users");
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user[users++] = cp;
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}
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}
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displayq(cbuf[0] - '\3');
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exit(0);
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case '\5': /* remove a job from the queue */
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if (!from_remote) {
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syslog(LOG_INFO, "illegal request (%d)", *cp);
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exit(1);
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}
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printer = cp;
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if (*printer == '\0')
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printer = DEFLP;
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while (*cp && *cp != ' ')
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cp++;
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if (!*cp)
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break;
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*cp++ = '\0';
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person = cp;
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while (*cp) {
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if (*cp != ' ') {
|
|
cp++;
|
|
continue;
|
|
}
|
|
*cp++ = '\0';
|
|
while (isspace(*cp))
|
|
cp++;
|
|
if (*cp == '\0')
|
|
break;
|
|
if (isdigit(*cp)) {
|
|
if (requests >= MAXREQUESTS)
|
|
fatal("Too many requests");
|
|
requ[requests++] = atoi(cp);
|
|
} else {
|
|
if (users >= MAXUSERS)
|
|
fatal("Too many users");
|
|
user[users++] = cp;
|
|
}
|
|
}
|
|
rmjob();
|
|
break;
|
|
}
|
|
fatal("Illegal service request");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Make a pass through the printcap database and start printing any
|
|
* files left from the last time the machine went down.
|
|
*/
|
|
static void
|
|
startup(void)
|
|
{
|
|
char *buf;
|
|
char *cp;
|
|
|
|
/*
|
|
* Restart the daemons.
|
|
*/
|
|
while (cgetnext(&buf, printcapdb) > 0) {
|
|
if (ckqueue(buf) <= 0) {
|
|
free(buf);
|
|
continue; /* no work to do for this printer */
|
|
}
|
|
for (cp = buf; *cp; cp++)
|
|
if (*cp == '|' || *cp == ':') {
|
|
*cp = '\0';
|
|
break;
|
|
}
|
|
if (lflag)
|
|
syslog(LOG_INFO, "work for %s", buf);
|
|
switch (fork()) {
|
|
case -1:
|
|
syslog(LOG_WARNING, "startup: cannot fork");
|
|
mcleanup(0);
|
|
case 0:
|
|
printer = buf;
|
|
setproctitle("working on printer %s", printer);
|
|
cgetclose();
|
|
printjob();
|
|
/* NOTREACHED */
|
|
default:
|
|
child_count++;
|
|
free(buf);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Make sure there's some work to do before forking off a child
|
|
*/
|
|
static int
|
|
ckqueue(char *cap)
|
|
{
|
|
struct dirent *d;
|
|
DIR *dirp;
|
|
char *spooldir;
|
|
|
|
if (cgetstr(cap, "sd", &spooldir) == -1)
|
|
spooldir = _PATH_DEFSPOOL;
|
|
if ((dirp = opendir(spooldir)) == NULL)
|
|
return (-1);
|
|
while ((d = readdir(dirp)) != NULL) {
|
|
if (d->d_name[0] != 'c' || d->d_name[1] != 'f')
|
|
continue; /* daemon control files only */
|
|
closedir(dirp);
|
|
return (1); /* found something */
|
|
}
|
|
closedir(dirp);
|
|
return (0);
|
|
}
|
|
|
|
#define DUMMY ":nobody::"
|
|
|
|
/*
|
|
* Check to see if the from host has access to the line printer.
|
|
*/
|
|
static void
|
|
chkhost(struct sockaddr *f, int check_opts)
|
|
{
|
|
struct addrinfo hints, *res, *r;
|
|
FILE *hostf;
|
|
int first = 1, good = 0;
|
|
char host[NI_MAXHOST], ip[NI_MAXHOST];
|
|
char serv[NI_MAXSERV];
|
|
int error;
|
|
|
|
error = getnameinfo(f, f->sa_len, NULL, 0, serv, sizeof(serv),
|
|
NI_NUMERICSERV);
|
|
if (error)
|
|
fatal("Malformed from address");
|
|
|
|
if (!(check_opts & LPD_NOPORTCHK) &&
|
|
atoi(serv) >= IPPORT_RESERVED)
|
|
fatal("Connect from invalid port (%s)", serv);
|
|
|
|
/* Need real hostname for temporary filenames */
|
|
error = getnameinfo(f, f->sa_len, host, sizeof(host), NULL, 0,
|
|
NI_NAMEREQD);
|
|
if (error) {
|
|
error = getnameinfo(f, f->sa_len, host, sizeof(host), NULL, 0,
|
|
NI_NUMERICHOST);
|
|
if (error)
|
|
fatal("Host name for your address unknown");
|
|
else
|
|
fatal("Host name for your address (%s) unknown", host);
|
|
}
|
|
|
|
(void)strncpy(fromb, host, sizeof(fromb) - 1);
|
|
fromb[sizeof(fromb) - 1] = '\0';
|
|
from = fromb;
|
|
|
|
/* need address in stringform for comparison (no DNS lookup here) */
|
|
error = getnameinfo(f, f->sa_len, host, sizeof(host), NULL, 0,
|
|
NI_NUMERICHOST);
|
|
if (error)
|
|
fatal("Cannot print address");
|
|
|
|
/* Check for spoof, ala rlogind */
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_family = PF_UNSPEC;
|
|
hints.ai_socktype = SOCK_DGRAM; /*dummy*/
|
|
error = getaddrinfo(fromb, NULL, &hints, &res);
|
|
if (error) {
|
|
fatal("hostname for your address (%s) unknown: %s", host,
|
|
gai_strerror(error));
|
|
}
|
|
good = 0;
|
|
for (r = res; good == 0 && r; r = r->ai_next) {
|
|
error = getnameinfo(r->ai_addr, r->ai_addrlen, ip, sizeof(ip),
|
|
NULL, 0, NI_NUMERICHOST);
|
|
if (!error && !strcmp(host, ip))
|
|
good = 1;
|
|
}
|
|
if (res)
|
|
freeaddrinfo(res);
|
|
if (good == 0)
|
|
fatal("address for your hostname (%s) not matched", host);
|
|
setproctitle("serving %s", from);
|
|
hostf = fopen(_PATH_HOSTSEQUIV, "r");
|
|
again:
|
|
if (hostf) {
|
|
if (__ivaliduser_sa(hostf, f, f->sa_len, DUMMY, DUMMY) == 0) {
|
|
(void)fclose(hostf);
|
|
return;
|
|
}
|
|
(void)fclose(hostf);
|
|
}
|
|
if (first == 1) {
|
|
first = 0;
|
|
hostf = fopen(_PATH_HOSTSLPD, "r");
|
|
goto again;
|
|
}
|
|
fatal("Your host does not have line printer access");
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
|
|
fprintf(stderr, "usage: %s [-dlrsW] [-b bind-address] [-n maxchild] "
|
|
"[-w maxwait] [port]\n", getprogname());
|
|
exit(1);
|
|
}
|
|
|
|
/* setup server socket for specified address family */
|
|
/* if af is PF_UNSPEC more than one socket may be returned */
|
|
/* the returned list is dynamically allocated, so caller needs to free it */
|
|
int *
|
|
socksetup(int af, int options, const char *port)
|
|
{
|
|
struct addrinfo hints, *res, *r;
|
|
int error, maxs = 0, *s, *socks = NULL, blidx = 0;
|
|
const int on = 1;
|
|
|
|
do {
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_flags = AI_PASSIVE;
|
|
hints.ai_family = af;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
error = getaddrinfo((blist_addrs == 0) ? NULL : blist[blidx],
|
|
port ? port : "printer", &hints, &res);
|
|
if (error) {
|
|
if (blist_addrs)
|
|
syslog(LOG_ERR, "%s: %s", blist[blidx],
|
|
gai_strerror(error));
|
|
else
|
|
syslog(LOG_ERR, "%s", gai_strerror(error));
|
|
mcleanup(0);
|
|
}
|
|
|
|
/* Count max number of sockets we may open */
|
|
for (r = res; r; r = r->ai_next, maxs++)
|
|
;
|
|
if (socks == NULL) {
|
|
socks = malloc((maxs + 1) * sizeof(int));
|
|
if (socks)
|
|
*socks = 0; /* num of sockets ctr at start */
|
|
} else
|
|
socks = realloc(socks, (maxs + 1) * sizeof(int));
|
|
if (!socks) {
|
|
syslog(LOG_ERR, "couldn't allocate memory for sockets");
|
|
mcleanup(0);
|
|
}
|
|
|
|
s = socks + *socks + 1;
|
|
for (r = res; r; r = r->ai_next) {
|
|
*s = socket(r->ai_family, r->ai_socktype,
|
|
r->ai_protocol);
|
|
if (*s < 0) {
|
|
syslog(LOG_DEBUG, "socket(): %m");
|
|
continue;
|
|
}
|
|
if (options & SO_DEBUG)
|
|
if (setsockopt(*s, SOL_SOCKET, SO_DEBUG,
|
|
&on, sizeof(on)) < 0) {
|
|
syslog(LOG_ERR,
|
|
"setsockopt (SO_DEBUG): %m");
|
|
close (*s);
|
|
continue;
|
|
}
|
|
if (bind(*s, r->ai_addr, r->ai_addrlen) < 0) {
|
|
syslog(LOG_DEBUG, "bind(): %m");
|
|
close (*s);
|
|
continue;
|
|
}
|
|
*socks = *socks + 1;
|
|
s++;
|
|
}
|
|
|
|
if (res)
|
|
freeaddrinfo(res);
|
|
} while (++blidx < blist_addrs);
|
|
|
|
if (socks == NULL || *socks == 0) {
|
|
syslog(LOG_ERR, "Couldn't bind to any socket");
|
|
if (socks != NULL)
|
|
free(socks);
|
|
mcleanup(0);
|
|
}
|
|
return(socks);
|
|
}
|