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
37 static char sccsid[] = "@(#)util.c 8.2 (Berkeley) 4/2/94";
38 #endif
39 static const char rcsid[] =
40 "$FreeBSD$";
41 #endif /* not lint */
42 #endif
43
44 #include "rcp_locl.h"
45
46 RCSID("$Id$");
47
48 char *
colon(cp)49 colon(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
64 char *
unbracket(char * cp)65 unbracket(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
79 void
verifydir(cp)80 verifydir(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
94 int
okname(cp0)95 okname(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
111 bad: warnx("%s: invalid user name", cp0);
112 return (0);
113 }
114
115 int
susystem(s)116 susystem(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
145 BUF *
allocbuf(bp,fd,blksize)146 allocbuf(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
177 void
lostconn(signo)178 lostconn(signo)
179 int signo;
180 {
181 if (!iamremote)
182 warnx("lost connection");
183 exit(1);
184 }
185