blob: feeacb8593b0be7ac416f5b6b579e8e5ee7ff6c8 [file] [log] [blame]
Ben Lindstrom19066a12001-04-12 23:39:26 +00001/* $OpenBSD: misc.c,v 1.5 2001/04/12 20:09:37 stevesk 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"
Ben Lindstrom19066a12001-04-12 23:39:26 +000028RCSID("$OpenBSD: misc.c,v 1.5 2001/04/12 20:09:37 stevesk 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"
Ben Lindstrom06909012001-03-05 06:09:31 +000032#include "xmalloc.h"
Damien Miller61c51502000-08-18 14:01:04 +100033
34char *
35chop(char *s)
36{
37 char *t = s;
38 while (*t) {
39 if(*t == '\n' || *t == '\r') {
40 *t = '\0';
41 return s;
42 }
43 t++;
44 }
45 return s;
46
47}
48
49void
50set_nonblock(int fd)
51{
52 int val;
Damien Miller61c51502000-08-18 14:01:04 +100053 val = fcntl(fd, F_GETFL, 0);
54 if (val < 0) {
55 error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
56 return;
57 }
Damien Miller69b69aa2000-10-28 14:19:58 +110058 if (val & O_NONBLOCK) {
59 debug("fd %d IS O_NONBLOCK", fd);
Damien Miller61c51502000-08-18 14:01:04 +100060 return;
Damien Miller69b69aa2000-10-28 14:19:58 +110061 }
Damien Miller61c51502000-08-18 14:01:04 +100062 debug("fd %d setting O_NONBLOCK", fd);
63 val |= O_NONBLOCK;
64 if (fcntl(fd, F_SETFL, val) == -1)
Damien Millercaf6dd62000-08-29 11:33:50 +110065 if (errno != ENODEV)
66 error("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
67 fd, strerror(errno));
Damien Miller61c51502000-08-18 14:01:04 +100068}
69
70/* Characters considered whitespace in strsep calls. */
71#define WHITESPACE " \t\r\n"
72
73char *
74strdelim(char **s)
75{
76 char *old;
77 int wspace = 0;
78
79 if (*s == NULL)
80 return NULL;
81
82 old = *s;
83
84 *s = strpbrk(*s, WHITESPACE "=");
85 if (*s == NULL)
86 return (old);
87
88 /* Allow only one '=' to be skipped */
89 if (*s[0] == '=')
90 wspace = 1;
91 *s[0] = '\0';
92
93 *s += strspn(*s + 1, WHITESPACE) + 1;
94 if (*s[0] == '=' && !wspace)
95 *s += strspn(*s + 1, WHITESPACE) + 1;
96
97 return (old);
98}
Kevin Stevesb6e773a2001-02-04 13:20:36 +000099
Ben Lindstrom086cf212001-03-05 05:56:40 +0000100struct passwd *
101pwcopy(struct passwd *pw)
102{
103 struct passwd *copy = xmalloc(sizeof(*copy));
Ben Lindstrom40304422001-03-05 06:22:01 +0000104
Ben Lindstrom086cf212001-03-05 05:56:40 +0000105 memset(copy, 0, sizeof(*copy));
106 copy->pw_name = xstrdup(pw->pw_name);
107 copy->pw_passwd = xstrdup(pw->pw_passwd);
Ben Lindstrom40304422001-03-05 06:22:01 +0000108 copy->pw_gecos = xstrdup(pw->pw_gecos);
Ben Lindstrom086cf212001-03-05 05:56:40 +0000109 copy->pw_uid = pw->pw_uid;
110 copy->pw_gid = pw->pw_gid;
Ben Lindstrom0f68db42001-03-05 07:57:09 +0000111#ifdef HAVE_PW_CLASS_IN_PASSWD
Ben Lindstrom086cf212001-03-05 05:56:40 +0000112 copy->pw_class = xstrdup(pw->pw_class);
Ben Lindstrom0f68db42001-03-05 07:57:09 +0000113#endif
Ben Lindstrom086cf212001-03-05 05:56:40 +0000114 copy->pw_dir = xstrdup(pw->pw_dir);
115 copy->pw_shell = xstrdup(pw->pw_shell);
116 return copy;
117}
118
Ben Lindstrom19066a12001-04-12 23:39:26 +0000119int a2port(const char *s)
120{
121 long port;
122 char *endp;
123
124 errno = 0;
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)
129 return 0;
130
131 return port;
132}
133
Kevin Stevesb6e773a2001-02-04 13:20:36 +0000134mysig_t
135mysignal(int sig, mysig_t act)
136{
137#ifdef HAVE_SIGACTION
138 struct sigaction sa, osa;
139
Kevin Stevese74ebd02001-02-17 17:10:16 +0000140 if (sigaction(sig, NULL, &osa) == -1)
Kevin Stevesb6e773a2001-02-04 13:20:36 +0000141 return (mysig_t) -1;
142 if (osa.sa_handler != act) {
Kevin Stevese74ebd02001-02-17 17:10:16 +0000143 memset(&sa, 0, sizeof(sa));
Kevin Stevesb6e773a2001-02-04 13:20:36 +0000144 sigemptyset(&sa.sa_mask);
145 sa.sa_flags = 0;
Kevin Steveseff26f22001-02-18 03:42:02 +0000146#if defined(SA_RESTART)
Damien Miller722ccb12001-02-18 15:18:43 +1100147 if (sig == SIGCHLD)
Kevin Steves799bed82001-02-16 14:58:12 +0000148 sa.sa_flags |= SA_RESTART;
Damien Miller722ccb12001-02-18 15:18:43 +1100149#endif
150#if defined(SA_INTERRUPT)
151 if (sig == SIGALRM)
Damien Miller0318e2e2001-02-18 13:04:23 +1100152 sa.sa_flags |= SA_INTERRUPT;
153#endif
Kevin Stevesb6e773a2001-02-04 13:20:36 +0000154 sa.sa_handler = act;
Kevin Stevese74ebd02001-02-17 17:10:16 +0000155 if (sigaction(sig, &sa, NULL) == -1)
Kevin Stevesb6e773a2001-02-04 13:20:36 +0000156 return (mysig_t) -1;
157 }
158 return (osa.sa_handler);
159#else
160 return (signal(sig, act));
161#endif
162}