1 /* $OpenBSD: misc.c,v 1.9 2001/05/19 19:43:57 stevesk Exp $ */
4 * Copyright (c) 2000 Markus Friedl. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 RCSID("$OpenBSD: misc.c,v 1.9 2001/05/19 19:43:57 stevesk Exp $");
39 if(*t == '\n' || *t == '\r') {
54 val = fcntl(fd, F_GETFL, 0);
56 error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
59 if (val & O_NONBLOCK) {
60 debug2("fd %d is O_NONBLOCK", fd);
63 debug("fd %d setting O_NONBLOCK", fd);
65 if (fcntl(fd, F_SETFL, val) == -1)
67 error("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
72 unset_nonblock(int fd)
76 val = fcntl(fd, F_GETFL, 0);
78 error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
81 if (!(val & O_NONBLOCK)) {
82 debug2("fd %d is not O_NONBLOCK", fd);
85 debug("fd %d setting O_NONBLOCK", fd);
87 if (fcntl(fd, F_SETFL, val) == -1)
89 error("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
93 /* Characters considered whitespace in strsep calls. */
94 #define WHITESPACE " \t\r\n"
107 *s = strpbrk(*s, WHITESPACE "=");
111 /* Allow only one '=' to be skipped */
116 *s += strspn(*s + 1, WHITESPACE) + 1;
117 if (*s[0] == '=' && !wspace)
118 *s += strspn(*s + 1, WHITESPACE) + 1;
124 pwcopy(struct passwd *pw)
126 struct passwd *copy = xmalloc(sizeof(*copy));
128 memset(copy, 0, sizeof(*copy));
129 copy->pw_name = xstrdup(pw->pw_name);
130 copy->pw_passwd = xstrdup(pw->pw_passwd);
131 copy->pw_gecos = xstrdup(pw->pw_gecos);
132 copy->pw_uid = pw->pw_uid;
133 copy->pw_gid = pw->pw_gid;
134 #ifdef HAVE_PW_CLASS_IN_PASSWD
135 copy->pw_class = xstrdup(pw->pw_class);
137 copy->pw_dir = xstrdup(pw->pw_dir);
138 copy->pw_shell = xstrdup(pw->pw_shell);
142 int a2port(const char *s)
148 port = strtol(s, &endp, 0);
149 if (s == endp || *endp != '\0' ||
150 (errno == ERANGE && (port == LONG_MIN || port == LONG_MAX)) ||
151 port <= 0 || port > 65535)
158 #define MINUTES (SECONDS * 60)
159 #define HOURS (MINUTES * 60)
160 #define DAYS (HOURS * 24)
161 #define WEEKS (DAYS * 7)
163 long convtime(const char *s)
173 if (p == NULL || *p == '\0')
177 secs = strtol(p, &endp, 10);
179 (errno == ERANGE && (secs == LONG_MIN || secs == LONG_MAX)) ||
218 cleanhostname(char *host)
220 if (*host == '[' && host[strlen(host) - 1] == ']') {
221 host[strlen(host) - 1] = '\0';
232 if (*cp == ':') /* Leading colon is part of file name. */
238 if (*cp == '@' && *(cp+1) == '[')
240 if (*cp == ']' && *(cp+1) == ':' && flag)
242 if (*cp == ':' && !flag)
251 addargs(arglist *args, char *fmt, ...)
257 vsnprintf(buf, sizeof(buf), fmt, ap);
260 if (args->list == NULL) {
263 } else if (args->num+2 >= args->nalloc)
266 args->list = xrealloc(args->list, args->nalloc * sizeof(char *));
267 args->list[args->num++] = xstrdup(buf);
268 args->list[args->num] = NULL;
272 mysignal(int sig, mysig_t act)
274 #ifdef HAVE_SIGACTION
275 struct sigaction sa, osa;
277 if (sigaction(sig, NULL, &osa) == -1)
279 if (osa.sa_handler != act) {
280 memset(&sa, 0, sizeof(sa));
281 sigemptyset(&sa.sa_mask);
283 #if defined(SA_RESTART)
285 sa.sa_flags |= SA_RESTART;
287 #if defined(SA_INTERRUPT)
289 sa.sa_flags |= SA_INTERRUPT;
292 if (sigaction(sig, &sa, NULL) == -1)
295 return (osa.sa_handler);
297 return (signal(sig, act));