1 /*
2  * Copyright (c) 2025 Omar Polo <op@omarpolo.com>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #include "config.h"
18 #include <stdio.h>
19 
20 #ifndef timespecsub
21 #define timespecsub(a, b, result)				\
22    do {								\
23       (result)->tv_sec = (a)->tv_sec - (b)->tv_sec;		\
24       (result)->tv_nsec = (a)->tv_nsec - (b)->tv_nsec;		\
25       if ((result)->tv_nsec < 0) {				\
26 	 --(result)->tv_sec;					\
27 	 (result)->tv_nsec += 1000000000L;			\
28       }								\
29    } while (0)
30 #endif
31 
32 #if !defined(SA_LEN)
33 # if defined(HAVE_STRUCT_SOCKADDR_SA_LEN)
34 #  define SA_LEN(x)	((x)->sa_len)
35 # else
36 #  define SA_LEN(x)     ((x)->sa_family == AF_INET6 ? \
37 			sizeof(struct sockaddr_in6) : \
38 			sizeof(struct sockaddr_in))
39 # endif
40 #endif
41 
42 #ifndef __dead
43 #define __dead __attribute__((__noreturn__))
44 #endif
45 
46 #ifndef HAVE_FGETLN
47 char *fgetln(FILE *, size_t *);
48 #endif
49 
50 #ifndef HAVE_PLEDGE
51 #define pledge(a, b) (0)
52 #endif
53 
54 #ifndef HAVE_REALLOCARRAY
55 void *reallocarray(void *, size_t, size_t);
56 #endif
57 
58 #ifndef HAVE_RECALLOCARRAY
59 void *recallocarray(void *, size_t, size_t, size_t);
60 #endif
61 
62 #ifndef HAVE_STRCASESTR
63 char *strcasestr(const char *, const char *);
64 #endif
65 
66 #ifndef HAVE_STRTONUM
67 long long strtonum(const char *, long long, long long, const char **);
68 #endif