1/*	$OpenBSD: cu.c,v 1.19 2006/05/25 08:41:52 jmc Exp $	*/
2/*	$NetBSD: cu.c,v 1.5 1997/02/11 09:24:05 mrg Exp $	*/
3
4/*
5 * Copyright (c) 1983, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD$");
35
36#ifndef lint
37#if 0
38static char sccsid[] = "@(#)cu.c	8.1 (Berkeley) 6/6/93";
39static const char rcsid[] = "$OpenBSD: cu.c,v 1.19 2006/05/25 08:41:52 jmc Exp $";
40#endif
41#endif /* not lint */
42
43#include "tip.h"
44
45static void	cuusage(void);
46
47/*
48 * Botch the interface to look like cu's
49 */
50void
51cumain(int argc, char *argv[])
52{
53	int ch, i, parity;
54	long l;
55	char *cp;
56	static char sbuf[12];
57
58	if (argc < 2)
59		cuusage();
60	CU = DV = NOSTR;
61	BR = DEFBR;
62	parity = 0;	/* none */
63
64	/*
65	 * We want to accept -# as a speed.  It's easiest to look through
66	 * the arguments, replace -# with -s#, and let getopt() handle it.
67	 */
68	for (i = 1; i < argc; i++) {
69		if (argv[i][0] == '-' &&
70		    argv[i][1] >= '0' && argv[i][1] <= '9') {
71			asprintf(&cp, "-s%s", argv[i] + 1);
72			if (cp == NULL) {
73				fprintf(stderr,
74				    "%s: cannot convert -# to -s#\n",
75				    __progname);
76				exit(3);
77			}
78			argv[i] = cp;
79		}
80	}
81
82	while ((ch = getopt(argc, argv, "a:l:s:htoe")) != -1) {
83		switch (ch) {
84		case 'a':
85			CU = optarg;
86			break;
87		case 'l':
88			if (DV != NULL) {
89				fprintf(stderr,
90				    "%s: cannot specificy multiple -l options\n",
91				    __progname);
92				exit(3);
93			}
94			if (strchr(optarg, '/'))
95				DV = optarg;
96			else
97				asprintf(&DV, "/dev/%s", optarg);
98			break;
99		case 's':
100			l = strtol(optarg, &cp, 10);
101			if (*cp != '\0' || l < 0 || l >= INT_MAX) {
102				fprintf(stderr, "%s: unsupported speed %s\n",
103				    __progname, optarg);
104				exit(3);
105			}
106			BR = (int)l;
107			break;
108		case 'h':
109			setboolean(value(LECHO), TRUE);
110			HD = TRUE;
111			break;
112		case 't':
113			HW = 1, DU = -1;
114			break;
115		case 'o':
116			if (parity != 0)
117				parity = 0;	/* -e -o */
118			else
119				parity = 1;	/* odd */
120			break;
121		case 'e':
122			if (parity != 0)
123				parity = 0;	/* -o -e */
124			else
125				parity = -1;	/* even */
126			break;
127		default:
128			cuusage();
129			break;
130		}
131	}
132	argc -= optind;
133	argv += optind;
134
135	switch (argc) {
136	case 1:
137		PN = argv[0];
138		break;
139	case 0:
140		break;
141	default:
142		cuusage();
143		break;
144	}
145
146	signal(SIGINT, cleanup);
147	signal(SIGQUIT, cleanup);
148	signal(SIGHUP, cleanup);
149	signal(SIGTERM, cleanup);
150	signal(SIGCHLD, SIG_DFL);
151
152	/*
153	 * The "cu" host name is used to define the
154	 * attributes of the generic dialer.
155	 */
156	(void)snprintf(sbuf, sizeof(sbuf), "cu%ld", BR);
157	if ((i = hunt(sbuf)) == 0) {
158		printf("all ports busy\n");
159		exit(3);
160	}
161	if (i == -1) {
162		printf("link down\n");
163		(void)uu_unlock(uucplock);
164		exit(3);
165	}
166	setbuf(stdout, NULL);
167	loginit();
168	user_uid();
169	vinit();
170	switch (parity) {
171	case -1:
172		setparity("even");
173		break;
174	case 1:
175		setparity("odd");
176		break;
177	default:
178		setparity("none");
179		break;
180	}
181	setboolean(value(VERBOSE), FALSE);
182	if (HW && ttysetup(BR)) {
183		fprintf(stderr, "%s: unsupported speed %ld\n",
184		    __progname, BR);
185		daemon_uid();
186		(void)uu_unlock(uucplock);
187		exit(3);
188	}
189	if (con()) {
190		printf("Connect failed\n");
191		daemon_uid();
192		(void)uu_unlock(uucplock);
193		exit(1);
194	}
195	if (!HW && ttysetup(BR)) {
196		fprintf(stderr, "%s: unsupported speed %ld\n",
197		    __progname, BR);
198		daemon_uid();
199		(void)uu_unlock(uucplock);
200		exit(3);
201	}
202}
203
204static void
205cuusage(void)
206{
207	fprintf(stderr, "usage: cu [-ehot] [-a acu] [-l line] "
208	    "[-s speed | -speed] [phone-number]\n");
209	exit(8);
210}
211