1/*-
2 * Copyright (c) 1992, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#if 0
35#ifndef lint
36#if 0
37static char sccsid[] = "@(#)util.c	8.2 (Berkeley) 4/2/94";
38#endif
39static const char rcsid[] =
40  "$FreeBSD$";
41#endif /* not lint */
42#endif
43
44#include "rcp_locl.h"
45
46RCSID("$Id$");
47
48char *
49colon(cp)
50	char *cp;
51{
52	if (*cp == ':')		/* Leading colon is part of file name. */
53		return (0);
54
55	for (; *cp; ++cp) {
56		if (*cp == ':')
57			return (cp);
58		if (*cp == '/')
59			return (0);
60	}
61	return (0);
62}
63
64char *
65unbracket(char *cp)
66{
67	char *ep;
68
69	if (*cp == '[') {
70		ep = cp + (strlen(cp) - 1);
71		if (*ep == ']') {
72			*ep = '\0';
73			++cp;
74		}
75	}
76	return (cp);
77}
78
79void
80verifydir(cp)
81	char *cp;
82{
83	struct stat stb;
84
85	if (!stat(cp, &stb)) {
86		if (S_ISDIR(stb.st_mode))
87			return;
88		errno = ENOTDIR;
89	}
90	run_err("%s: %s", cp, strerror(errno));
91	exit(1);
92}
93
94int
95okname(cp0)
96	char *cp0;
97{
98	int c;
99	unsigned char *cp;
100
101	cp = (unsigned char *)cp0;
102	do {
103		c = *cp;
104		if (c & 0200)
105			goto bad;
106		if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-')
107			goto bad;
108	} while (*++cp);
109	return (1);
110
111bad:	warnx("%s: invalid user name", cp0);
112	return (0);
113}
114
115int
116susystem(s)
117	char *s;
118{
119	void (*istat)(int), (*qstat)(int);
120	int status;
121	pid_t pid;
122
123	pid = fork();
124	switch (pid) {
125	case -1:
126		return (127);
127
128	case 0:
129		execl(_PATH_BSHELL, "sh", "-c", s, NULL);
130		_exit(127);
131	}
132	istat = signal(SIGINT, SIG_IGN);
133	qstat = signal(SIGQUIT, SIG_IGN);
134	if (waitpid(pid, &status, 0) < 0)
135		status = -1;
136	(void)signal(SIGINT, istat);
137	(void)signal(SIGQUIT, qstat);
138	return (status);
139}
140
141#ifndef roundup
142#define	roundup(x, y)	((((x)+((y)-1))/(y))*(y))
143#endif
144
145BUF *
146allocbuf(bp, fd, blksize)
147	BUF *bp;
148	int fd, blksize;
149{
150	struct stat stb;
151	size_t size;
152	char *p;
153
154	if (fstat(fd, &stb) < 0) {
155		run_err("fstat: %s", strerror(errno));
156		return (0);
157	}
158	size = roundup(stb.st_blksize, blksize);
159	if (size == 0)
160		size = blksize;
161	if (bp->cnt >= size)
162		return (bp);
163	if ((p = realloc(bp->buf, size)) == NULL) {
164		if (bp->buf)
165			free(bp->buf);
166		bp->buf = NULL;
167		bp->cnt = 0;
168		run_err("%s", strerror(errno));
169		return (0);
170	}
171	memset(p, 0, size);
172	bp->buf = p;
173	bp->cnt = size;
174	return (bp);
175}
176
177void
178lostconn(signo)
179	int signo;
180{
181	if (!iamremote)
182		warnx("lost connection");
183	exit(1);
184}
185