1 /* $OpenBSD: misc.c,v 1.6 2001/05/03 23:09:52 mouring 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 1.6 2001/05/03 23:09:52 mouring Exp $");
39 if(*t == '\n' || *t == '\r') {
53 val = fcntl(fd, F_GETFL, 0);
55 error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
58 if (val & O_NONBLOCK) {
59 debug("fd %d IS O_NONBLOCK", fd);
62 debug("fd %d setting O_NONBLOCK", fd);
64 if (fcntl(fd, F_SETFL, val) == -1)
66 error("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
70 /* Characters considered whitespace in strsep calls. */
71 #define WHITESPACE " \t\r\n"
84 *s = strpbrk(*s, WHITESPACE "=");
88 /* Allow only one '=' to be skipped */
93 *s += strspn(*s + 1, WHITESPACE) + 1;
94 if (*s[0] == '=' && !wspace)
95 *s += strspn(*s + 1, WHITESPACE) + 1;
101 pwcopy(struct passwd *pw)
103 struct passwd *copy = xmalloc(sizeof(*copy));
105 memset(copy, 0, sizeof(*copy));
106 copy->pw_name = xstrdup(pw->pw_name);
107 copy->pw_passwd = xstrdup(pw->pw_passwd);
108 copy->pw_gecos = xstrdup(pw->pw_gecos);
109 copy->pw_uid = pw->pw_uid;
110 copy->pw_gid = pw->pw_gid;
111 #ifdef HAVE_PW_CLASS_IN_PASSWD
112 copy->pw_class = xstrdup(pw->pw_class);
114 copy->pw_dir = xstrdup(pw->pw_dir);
115 copy->pw_shell = xstrdup(pw->pw_shell);
119 int a2port(const char *s)
125 port = strtol(s, &endp, 0);
126 if (s == endp || *endp != '\0' ||
127 (errno == ERANGE && (port == LONG_MIN || port == LONG_MAX)) ||
128 port <= 0 || port > 65535)
135 cleanhostname(char *host)
137 if (*host == '[' && host[strlen(host) - 1] == ']') {
138 host[strlen(host) - 1] = '\0';
149 if (*cp == ':') /* Leading colon is part of file name. */
155 if (*cp == '@' && *(cp+1) == '[')
157 if (*cp == ']' && *(cp+1) == ':' && flag)
159 if (*cp == ':' && !flag)
168 mysignal(int sig, mysig_t act)
170 #ifdef HAVE_SIGACTION
171 struct sigaction sa, osa;
173 if (sigaction(sig, NULL, &osa) == -1)
175 if (osa.sa_handler != act) {
176 memset(&sa, 0, sizeof(sa));
177 sigemptyset(&sa.sa_mask);
179 #if defined(SA_RESTART)
181 sa.sa_flags |= SA_RESTART;
183 #if defined(SA_INTERRUPT)
185 sa.sa_flags |= SA_INTERRUPT;
188 if (sigaction(sig, &sa, NULL) == -1)
191 return (osa.sa_handler);
193 return (signal(sig, act));