blob: 46cf088c72b04c3402ed338f331b3905bbcfe9de [file] [log] [blame]
Ben Lindstrome5b3fb32001-02-10 23:56:35 +00001/* $OpenBSD: misc.c,v 1.1 2001/01/21 19:05:52 markus Exp $ */
Damien Millere4340be2000-09-16 13:29:08 +11002
3/*
4 * Copyright (c) 2000 Markus Friedl. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
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.
14 *
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.
25 */
26
Damien Miller61c51502000-08-18 14:01:04 +100027#include "includes.h"
Kevin Steves2b725a02001-02-05 18:16:28 +000028RCSID("$OpenBSD: misc.c,v 1.1 2001/01/21 19:05:52 markus Exp $");
Damien Miller61c51502000-08-18 14:01:04 +100029
Kevin Stevesb6e773a2001-02-04 13:20:36 +000030#include "misc.h"
Ben Lindstrom226cfa02001-01-22 05:34:40 +000031#include "log.h"
Damien Miller61c51502000-08-18 14:01:04 +100032
33char *
34chop(char *s)
35{
36 char *t = s;
37 while (*t) {
38 if(*t == '\n' || *t == '\r') {
39 *t = '\0';
40 return s;
41 }
42 t++;
43 }
44 return s;
45
46}
47
48void
49set_nonblock(int fd)
50{
51 int val;
Damien Miller61c51502000-08-18 14:01:04 +100052 val = fcntl(fd, F_GETFL, 0);
53 if (val < 0) {
54 error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
55 return;
56 }
Damien Miller69b69aa2000-10-28 14:19:58 +110057 if (val & O_NONBLOCK) {
58 debug("fd %d IS O_NONBLOCK", fd);
Damien Miller61c51502000-08-18 14:01:04 +100059 return;
Damien Miller69b69aa2000-10-28 14:19:58 +110060 }
Damien Miller61c51502000-08-18 14:01:04 +100061 debug("fd %d setting O_NONBLOCK", fd);
62 val |= O_NONBLOCK;
63 if (fcntl(fd, F_SETFL, val) == -1)
Damien Millercaf6dd62000-08-29 11:33:50 +110064 if (errno != ENODEV)
65 error("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
66 fd, strerror(errno));
Damien Miller61c51502000-08-18 14:01:04 +100067}
68
69/* Characters considered whitespace in strsep calls. */
70#define WHITESPACE " \t\r\n"
71
72char *
73strdelim(char **s)
74{
75 char *old;
76 int wspace = 0;
77
78 if (*s == NULL)
79 return NULL;
80
81 old = *s;
82
83 *s = strpbrk(*s, WHITESPACE "=");
84 if (*s == NULL)
85 return (old);
86
87 /* Allow only one '=' to be skipped */
88 if (*s[0] == '=')
89 wspace = 1;
90 *s[0] = '\0';
91
92 *s += strspn(*s + 1, WHITESPACE) + 1;
93 if (*s[0] == '=' && !wspace)
94 *s += strspn(*s + 1, WHITESPACE) + 1;
95
96 return (old);
97}
Kevin Stevesb6e773a2001-02-04 13:20:36 +000098
99mysig_t
100mysignal(int sig, mysig_t act)
101{
102#ifdef HAVE_SIGACTION
103 struct sigaction sa, osa;
104
105 if (sigaction(sig, 0, &osa) == -1)
106 return (mysig_t) -1;
107 if (osa.sa_handler != act) {
108 memset(&sa, 0, sizeof sa);
109 sigemptyset(&sa.sa_mask);
110 sa.sa_flags = 0;
111 sa.sa_handler = act;
112 if (sigaction(sig, &sa, 0) == -1)
113 return (mysig_t) -1;
114 }
115 return (osa.sa_handler);
116#else
117 return (signal(sig, act));
118#endif
119}