1 /*
2  * Copyright (c) 2021 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 #ifndef COMPAT_H
18 #define COMPAT_H
19 
20 #include "config.h"
21 
22 #include <sys/types.h>
23 #include <sys/uio.h>
24 
25 #include <stdarg.h>
26 #include <stddef.h>
27 #include <stdint.h>
28 #include <stdio.h>
29 
30 #if HAVE_ENDIAN_H
31 # include <endian.h>
32 #elif HAVE_SYS_ENDIAN_H
33 # include <sys/endian.h>
34 #elif HAVE_LIBKERN_OSBYTEORDER_H
35 # include <machine/endian.h>
36 # include <libkern/OSByteOrder.h>
37 
38 # define htobe16(x) OSSwapHostToBigInt16(x)
39 # define htole16(x) OSSwapHostToLittleInt16(x)
40 # define be16toh(x) OSSwapBigToHostInt16(x)
41 # define le16toh(x) OSSwapLittleToHostInt16(x)
42 
43 # define htobe32(x) OSSwapHostToBigInt32(x)
44 # define htole32(x) OSSwapHostToLittleInt32(x)
45 # define be32toh(x) OSSwapBigToHostInt32(x)
46 # define le32toh(x) OSSwapLittleToHostInt32(x)
47 
48 # define htobe64(x) OSSwapHostToBigInt64(x)
49 # define htole64(x) OSSwapHostToLittleInt64(x)
50 # define be64toh(x) OSSwapBigToHostInt64(x)
51 # define le64toh(x) OSSwapLittleToHostInt64(x)
52 #else
53 # error no compatible endian.h header found
54 #endif
55 
56 #ifdef HAVE_QUEUE_H
57 # include <sys/queue.h>
58 #else
59 # include "compat/queue.h"
60 #endif
61 
62 #ifdef HAVE_IMSG
63 # include <imsg.h>
64 #else
65 # include "compat/imsg.h"
66 #endif
67 
68 #ifdef HAVE_LIBUTIL
69 # include <ohash.h>
70 # include <util.h>
71 #else
72 # include "compat/ohash.h"
73 # define FMT_SCALED_STRSIZE      7       /* minus sign, 4 digits, suffix, null byte */
74 int		 scan_scaled(char *, long long *);
75 int		 fmt_scaled(long long, char *);
76 #endif
77 
78 #ifndef HAVE_ASPRINTF
79 int		 asprintf(char**, const char*, ...);
80 int		 vasprintf(char**, const char*, va_list);
81 #endif
82 
83 #ifndef HAVE_ERR
84 void		 err(int, const char*, ...);
85 void		 errx(int, const char*, ...);
86 void		 warn(int, const char*, ...);
87 void		 warnx(int, const char*, ...);
88 #else
89 # include <err.h>
90 #endif
91 
92 #ifndef HAVE_EXPLICIT_BZERO
93 void		 explicit_bzero(void *, size_t);
94 #endif
95 
96 #ifndef HAVE_FREEZERO
97 void		 freezero(void*, size_t);
98 #endif
99 
100 #ifndef HAVE_GETDTABLECOUNT
101 int		 getdtablecount(void);
102 #endif
103 
104 #ifndef HAVE_GETDTABLESIZE
105 int		 getdtablesize(void);
106 #endif
107 
108 #ifndef HAVE_FGETLN
109 char 		*fgetln(FILE *, size_t *);
110 #endif
111 
112 #ifndef HAVE_FPARSELN
113 char 		*fparseln(FILE *, size_t *, size_t *, const char [3], int);
114 #endif
115 
116 #ifndef HAVE_GETPROGNAME
117 const char	*getprogname(void);
118 #endif
119 
120 #ifdef HAVE_LIBUTIL_H
121 #include <libutil.h>
122 #endif
123 
124 #ifndef HAVE_MEMMEM
125 void		*memmem(const void*, size_t, const void*, size_t);
126 #endif
127 
128 #ifndef HAVE_REALLOCARRAY
129 void		*reallocarray(void*, size_t, size_t);
130 #endif
131 
132 #ifndef HAVE_RECALLOCARRAY
133 void		*recallocarray(void*, size_t, size_t, size_t);
134 #endif
135 
136 #ifndef HAVE_STRCASESTR
137 char		*strcasestr(const char *, const char *);
138 #endif
139 
140 #ifndef HAVE_STRLCPY
141 size_t		 strlcpy(char*, const char*, size_t);
142 #endif
143 
144 #ifndef HAVE_STRLCAT
145 size_t		 strlcat(char*, const char*, size_t);
146 #endif
147 
148 #ifndef HAVE_STRSEP
149 char		*strsep(char**, const char*);
150 #endif
151 
152 #ifndef HAVE_STRTONUM
153 long long	 strtonum(const char*, long long, long long, const char**);
154 #endif
155 
156 #ifndef HAVE_SETPROCTITLE
157 void		 setproctitle(const char*, ...);
158 #endif
159 
160 /* Needed for Darwin (MacOS) to keep fparseln() happy -- but could also be
161  * used elsewhere in the future.
162  */
163 #ifdef HAVE_UTIL_H
164 #include <util.h>
165 #endif
166 
167 #ifndef __dead
168 #define __dead __attribute__((__noreturn__))
169 #endif
170 
171 /*
172  * The following time-related macros from sys/time.h are subject to:
173  * 
174  * Copyright (c) 1982, 1986, 1993
175  *	The Regents of the University of California.  All rights reserved.
176  *
177  * Redistribution and use in source and binary forms, with or without
178  * modification, are permitted provided that the following conditions
179  * are met:
180  * 1. Redistributions of source code must retain the above copyright
181  *    notice, this list of conditions and the following disclaimer.
182  * 2. Redistributions in binary form must reproduce the above copyright
183  *    notice, this list of conditions and the following disclaimer in the
184  *    documentation and/or other materials provided with the distribution.
185  * 3. Neither the name of the University nor the names of its contributors
186  *    may be used to endorse or promote products derived from this software
187  *    without specific prior written permission.
188  *
189  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
190  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
191  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
192  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
193  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
194  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
195  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
196  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
197  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
198  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
199  * SUCH DAMAGE.
200  *
201  *	@(#)time.h	8.2 (Berkeley) 7/10/94
202  */
203 
204 #ifndef HAVE_TIMESPECSUB
205 #define	timespecsub(tsp, usp, vsp)					\
206 	do {								\
207 		(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;		\
208 		(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec;	\
209 		if ((vsp)->tv_nsec < 0) {				\
210 			(vsp)->tv_sec--;				\
211 			(vsp)->tv_nsec += 1000000000L;			\
212 		}							\
213 	} while (0)
214 #endif
215 
216 #ifndef HAVE_TIMERCMP
217 #define	timercmp(tvp, uvp, cmp)						\
218 	(((tvp)->tv_sec == (uvp)->tv_sec) ?				\
219 	    ((tvp)->tv_usec cmp (uvp)->tv_usec) :			\
220 	    ((tvp)->tv_sec cmp (uvp)->tv_sec))
221 #endif
222 
223 #ifndef HAVE_TIMEVAL_TO_TIMESPEC
224 #define	TIMEVAL_TO_TIMESPEC(tv, ts) do {				\
225 	(ts)->tv_sec = (tv)->tv_sec;					\
226 	(ts)->tv_nsec = (tv)->tv_usec * 1000;				\
227 } while (0)
228 #define	TIMESPEC_TO_TIMEVAL(tv, ts) do {				\
229 	(tv)->tv_sec = (ts)->tv_sec;					\
230 	(tv)->tv_usec = (ts)->tv_nsec / 1000;				\
231 } while (0)
232 #endif
233 
234 #endif /* COMPAT_H */