2 * Copyright (c) 2000 Markus Friedl. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 RCSID("$OpenBSD: misc.c,v 1.23 2003/10/28 09:08:06 markus Exp $");
32 /* remove newline at end of string */
38 if (*t == '\n' || *t == '\r') {
48 /* set/unset filedescriptor to non-blocking */
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 debug2("fd %d setting O_NONBLOCK", fd);
65 if (fcntl(fd, F_SETFL, val) == -1)
66 debug("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
71 unset_nonblock(int fd)
75 val = fcntl(fd, F_GETFL, 0);
77 error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
80 if (!(val & O_NONBLOCK)) {
81 debug2("fd %d is not O_NONBLOCK", fd);
84 debug("fd %d clearing O_NONBLOCK", fd);
86 if (fcntl(fd, F_SETFL, val) == -1)
87 debug("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
91 /* disable nagle on socket */
99 if (getsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &opt, &optlen) == -1) {
100 debug("getsockopt TCP_NODELAY: %.100s", strerror(errno));
104 debug2("fd %d is TCP_NODELAY", fd);
108 debug2("fd %d setting TCP_NODELAY", fd);
109 if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof opt) == -1)
110 error("setsockopt TCP_NODELAY: %.100s", strerror(errno));
113 /* Characters considered whitespace in strsep calls. */
114 #define WHITESPACE " \t\r\n"
116 /* Characters considered as quotations. */
119 /* return next token in configuration line */
131 if ((q=strchr(QUOTES, (int) *old)) && *q)
133 /* find next quote character, point old to start of quoted
135 for (p = ++old;*p && *p!=*q; p++)
138 /* find start of next token */
139 *s = (*p) ? p + strspn(p + 1, WHITESPACE) + 1 : NULL;
141 /* terminate 'old' token */
146 *s = strpbrk(*s, WHITESPACE "=");
150 /* Allow only one '=' to be skipped */
155 *s += strspn(*s + 1, WHITESPACE) + 1;
156 if (*s[0] == '=' && !wspace)
157 *s += strspn(*s + 1, WHITESPACE) + 1;
163 pwcopy(struct passwd *pw)
165 struct passwd *copy = xmalloc(sizeof(*copy));
167 memset(copy, 0, sizeof(*copy));
168 copy->pw_name = xstrdup(pw->pw_name);
169 copy->pw_passwd = xstrdup(pw->pw_passwd);
170 copy->pw_gecos = xstrdup(pw->pw_gecos);
171 copy->pw_uid = pw->pw_uid;
172 copy->pw_gid = pw->pw_gid;
173 #ifdef HAVE_PW_EXPIRE_IN_PASSWD
174 copy->pw_expire = pw->pw_expire;
176 #ifdef HAVE_PW_CHANGE_IN_PASSWD
177 copy->pw_change = pw->pw_change;
179 #ifdef HAVE_PW_CLASS_IN_PASSWD
180 copy->pw_class = xstrdup(pw->pw_class);
182 copy->pw_dir = xstrdup(pw->pw_dir);
183 copy->pw_shell = xstrdup(pw->pw_shell);
188 * Convert ASCII string to TCP/IP port number.
189 * Port must be >0 and <=65535.
190 * Return 0 if invalid.
193 a2port(const char *s)
199 port = strtol(s, &endp, 0);
200 if (s == endp || *endp != '\0' ||
201 (errno == ERANGE && (port == LONG_MIN || port == LONG_MAX)) ||
202 port <= 0 || port > 65535)
209 #define MINUTES (SECONDS * 60)
210 #define HOURS (MINUTES * 60)
211 #define DAYS (HOURS * 24)
212 #define WEEKS (DAYS * 7)
215 * Convert a time string into seconds; format is
219 * Valid time qualifiers are:
233 * Return -1 if time string is invalid.
236 convtime(const char *s)
246 if (p == NULL || *p == '\0')
250 secs = strtol(p, &endp, 10);
252 (errno == ERANGE && (secs == LONG_MIN || secs == LONG_MAX)) ||
291 cleanhostname(char *host)
293 if (*host == '[' && host[strlen(host) - 1] == ']') {
294 host[strlen(host) - 1] = '\0';
305 if (*cp == ':') /* Leading colon is part of file name. */
311 if (*cp == '@' && *(cp+1) == '[')
313 if (*cp == ']' && *(cp+1) == ':' && flag)
315 if (*cp == ':' && !flag)
323 /* function to assist building execv() arguments */
325 addargs(arglist *args, char *fmt, ...)
332 vsnprintf(buf, sizeof(buf), fmt, ap);
335 nalloc = args->nalloc;
336 if (args->list == NULL) {
339 } else if (args->num+2 >= nalloc)
342 args->list = xrealloc(args->list, nalloc * sizeof(char *));
343 args->nalloc = nalloc;
344 args->list[args->num++] = xstrdup(buf);
345 args->list[args->num] = NULL;