1/*
2 * Copyright (c) 1984 through 2008, William LeFebvre
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
11 *     * Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 *
16 *     * Neither the name of William LeFebvre nor the names of other
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include "config.h"
34
35#include <sys/types.h>
36#include <sys/param.h>
37#include <stdio.h>
38
39#ifdef HAVE_LIMITS_H
40#include <limits.h>
41#endif
42
43#if TIME_WITH_SYS_TIME
44# include <sys/time.h>
45# include <time.h>
46#else
47# if HAVE_SYS_TIME_H
48#  include <sys/time.h>
49# else
50#  include <time.h>
51# endif
52#endif
53
54#ifdef __NetBSD__
55#include <util.h>
56#else
57#define emalloc malloc
58#define estrdup strdup
59#define ecalloc calloc
60#define erealloc realloc
61#endif
62
63#if STDC_HEADERS
64#include <string.h>
65#include <stdlib.h>
66#define setbuffer(f, b, s)	setvbuf((f), (b), (b) ? _IOFBF : _IONBF, (s))
67#define memzero(a, b)		memset((a), 0, (b))
68#else /* !STDC_HEADERS */
69#ifndef HAVE_STRCHR
70#define strchr(a, b)		index((a), (b))
71#define strrchr(a, b)		rindex((a), (b))
72#endif /* HAVE_STRCHR */
73#ifdef HAVE_MEMCPY
74#define memzero(a, b)		memset((a), 0, (b))
75#else
76#define memcpy(a, b, c)		bcopy((b), (a), (c))
77#define memzero(a, b)		bzero((a), (b))
78#define memcmp(a, b, c)		bcmp((a), (b), (c))
79#endif /* HAVE_MEMCPY */
80#ifdef HAVE_STRINGS_H
81#include <strings.h>
82#else
83#ifdef HAVE_STRING_H
84#include <string.h>
85#endif
86#endif
87char *getenv();
88caddr_t malloc();
89#endif /* STDC_HEADERS */
90
91/* If snprintf or vsnprintf aren't available, we substitute our own.
92   But we have to include stdarg in order to be able to define them.
93*/
94#ifdef HAVE_STDARG_H
95#include <stdarg.h>
96#ifndef HAVE_SNPRINTF
97int ap_snprintf(char *buf, size_t len, const char *format,...);
98#define snprintf ap_snprintf
99#endif
100#ifndef HAVE_VSNPRINTF
101int ap_vsnprintf(char *buf, size_t len, const char *format,va_list ap);
102#define vsnprintf ap_vsnprintf
103#endif
104#endif
105
106#if !HAVE_PID_T
107typedef long pid_t;
108#endif
109#if !HAVE_TIME_T
110typedef long time_t;
111#endif
112#if !HAVE_UID_T
113typedef long uid_t;
114#endif
115
116#ifndef INT_MAX
117#define INT_MAX (0x7fffffff)
118#endif
119
120#ifndef UINT_MAX
121#define UINT_MAX (0xffffffffU)
122#endif
123
124/* we must have both sighold and sigrelse to use them */
125#if defined(HAVE_SIGHOLD) && !defined(HAVE_SIGRELSE)
126#undef HAVE_SIGHOLD
127#endif
128
129#ifdef HAVE_UNISTD_H
130#include <unistd.h>
131#endif
132
133#ifdef HAVE_SYSEXITS_H
134#include <sysexits.h>
135#else
136#define EX_OK		0	/* successful termination */
137#define EX_USAGE	64	/* command line usage error */
138#define EX_DATAERR	65	/* data format error */
139#define EX_NOINPUT	66	/* cannot open input */
140#define EX_NOUSER	67	/* addressee unknown */
141#define EX_NOHOST	68	/* host name unknown */
142#define EX_UNAVAILABLE	69	/* service unavailable */
143#define EX_SOFTWARE	70	/* internal software error */
144#define EX_OSERR	71	/* system error (e.g., can't fork) */
145#define EX_OSFILE	72	/* critical OS file missing */
146#define EX_CANTCREAT	73	/* can't create (user) output file */
147#define EX_IOERR	74	/* input/output error */
148#define EX_TEMPFAIL	75	/* temp failure; user is invited to retry */
149#define EX_PROTOCOL	76	/* remote error in protocol */
150#define EX_NOPERM	77	/* permission denied */
151#define EX_CONFIG	78	/* configuration error */
152#endif
153