1 #ifndef _GOT_COMPAT_H
2 #define _GOT_COMPAT_H
3 
4 #include <sys/types.h>
5 #include <sys/ioctl.h>
6 #include <sys/uio.h>
7 #if defined(__FreeBSD__)
8 #include <sys/endian.h>
9 #include <sys/capsicum.h>
10 #elif defined(__APPLE__)
11 #include <machine/endian.h>
12 #include <libkern/OSByteOrder.h>
13 #include "compat/bsd-poll.h"
14 
15 #define FMT_SCALED_STRSIZE	7  /* minus sign, 4 digits, suffix, null byte */
16 
17 #define htobe16(x) OSSwapHostToBigInt16(x)
18 #define htole16(x) OSSwapHostToLittleInt16(x)
19 #define be16toh(x) OSSwapBigToHostInt16(x)
20 #define le16toh(x) OSSwapLittleToHostInt16(x)
21 
22 #define htobe32(x) OSSwapHostToBigInt32(x)
23 #define htole32(x) OSSwapHostToLittleInt32(x)
24 #define be32toh(x) OSSwapBigToHostInt32(x)
25 #define le32toh(x) OSSwapLittleToHostInt32(x)
26 
27 #define htobe64(x) OSSwapHostToBigInt64(x)
28 #define htole64(x) OSSwapHostToLittleInt64(x)
29 #define be64toh(x) OSSwapBigToHostInt64(x)
30 #define le64toh(x) OSSwapLittleToHostInt64(x)
31 
32 #define st_atim st_atimespec
33 #define st_ctim st_ctimespec
34 #define st_mtim st_mtimespec
35 
36 #else /* Linux, etc... */
37 #include <endian.h>
38 #include <grp.h>
39 #endif
40 
41 #include <fnmatch.h>
42 #include <limits.h>
43 #include <stdio.h>
44 #include <stdint.h>
45 
46 /* For flock. */
47 #ifndef O_EXLOCK
48 #define O_EXLOCK 0
49 #endif
50 
51 #ifndef HAVE_FLOCK
52 #define LOCK_SH 0
53 #define LOCK_EX 0
54 #define LOCK_NB 0
55 #define flock(fd, op) (0)
56 #else
57 #include <sys/file.h>
58 #endif
59 
60 /* POSIX doesn't define WAIT_ANY, so provide it if it's not found. */
61 #ifndef WAIT_ANY
62 #define WAIT_ANY (-1)
63 #endif
64 
65 /* SOCK_NONBLOCK isn't available across BSDs... */
66 #ifndef SOCK_NONBLOCK
67 #define SOCK_NONBLOCK 00004000
68 #endif
69 
70 /* On FreeBSD (and possibly others), EAI_NODATA was removed, in favour of
71  * using EAI_NONAME.
72  */
73 #ifndef EAI_NODATA
74 #define EAI_NODATA EAI_NONAME
75 #endif
76 
77 #ifndef __dead
78 #define __dead __attribute__ ((__noreturn__))
79 #endif
80 
81 #ifndef __unused
82 #define __unused __attribute__ ((__unused__))
83 #endif
84 
85 #ifndef __OpenBSD__
86 #define pledge(s, p) (0)
87 #define unveil(s, p) (0)
88 #endif
89 
90 #ifndef __FreeBSD__
91 #define cap_enter() (0)
92 #endif
93 
94 #ifndef HAVE_SETRESGID
95 #define setresgid(a, b, c) (0)
96 #endif
97 
98 #ifndef HAVE_SETRESUID
99 #define setresuid(a, b, c) (0)
100 #endif
101 
102 #ifndef HAVE_LINUX_LANDLOCK_H
103 #define landlock_no_fs() (0)
104 #else
105 int	landlock_no_fs(void);
106 #endif
107 
108 #ifndef INFTIM
109 #define INFTIM -1
110 #endif
111 
112 #ifndef HAVE_BSD_UUID
113 #include <uuid/uuid.h>
114 #define uuid_s_ok 0
115 #define uuid_s_bad_version  1
116 #define uuid_s_invalid_string_uuid 2
117 #define uuid_s_no_memory  3
118 
119 /* Length of a node address (an IEEE 802 address). */
120 #define _UUID_NODE_LEN  6
121 
122 struct uuid {
123 	uint32_t time_low;
124 	uint16_t time_mid;
125 	uint16_t time_hi_and_version;
126 	uint8_t  clock_seq_hi_and_reserved;
127 	uint8_t  clock_seq_low;
128 	uint8_t  node[_UUID_NODE_LEN];
129 };
130 
131 int32_t uuid_equal(struct uuid *, struct uuid *, uint32_t *);
132 int32_t uuid_is_nil(struct uuid *, uint32_t *);
133 void uuid_create(uuid_t *, uint32_t *);
134 void uuid_create_nil(struct uuid *, uint32_t *);
135 void uuid_from_string(const char *, uuid_t *, uint32_t *);
136 void uuid_to_string(uuid_t *, char **, uint32_t *);
137 #else
138 #include <uuid.h>
139 #endif
140 
141 #ifdef HAVE_STDINT_H
142 #include <stdint.h>
143 #else
144 #include <inttypes.h>
145 #endif
146 
147 #ifdef HAVE_QUEUE_H
148 #include <sys/queue.h>
149 #endif
150 
151 #ifdef HAVE_TREE_H
152 #include <sys/tree.h>
153 #else
154 #include "compat/tree.h"
155 #endif
156 
157 #ifdef HAVE_UTIL_H
158 #include <util.h>
159 #endif
160 
161 #ifdef HAVE_LIBUTIL_H
162 #include <libutil.h>
163 #endif
164 
165 #ifdef HAVE_IMSG
166 #else
167 #include "compat/imsg.h"
168 #endif
169 
170 #ifdef HAVE_SIPHASH
171 #include <siphash.h>
172 #else
173 #include "compat/siphash.h"
174 #endif
175 
176 /* Include Apple-specific headers.  Mostly for crypto.*/
177 #if defined(__APPLE__)
178 #define COMMON_DIGEST_FOR_OPENSSL
179 #include <CommonCrypto/CommonDigest.h>
180 #endif
181 
182 #ifdef HAVE_SHA_AS_SHA1
183 #  include <sha.h>
184 #endif
185 #ifdef HAVE_SHA1_AS_SHA1
186 #      include <sha1.h>
187 #endif
188 #ifdef HAVE_SHA2
189 #    include <sha2.h>
190 #endif
191 #ifdef HAVE_SHA256
192 #    include <sha256.h>
193 #endif
194 
195 /* Catch-all for systems where the header files don't exist and/or the below
196  * still are not defined.
197  */
198 #ifndef SHA256_DIGEST_LENGTH
199 #define SHA256_DIGEST_LENGTH 32
200 #endif
201 
202 #ifndef SHA256_DIGEST_STRING_LENGTH
203 #define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1)
204 #endif
205 
206 #if defined(__DragonFly__)
207 #include <openssl/sha.h>
208 #endif
209 
210 #ifdef NEEDS_SHA1_DEFS
211 #define SHA1_DIGEST_LENGTH		SHA_DIGEST_LENGTH
212 #define SHA1_DIGEST_STRING_LENGTH	(SHA1_DIGEST_LENGTH * 2 + 1)
213 
214 #define SHA1_CTX	SHA_CTX
215 #define SHA1Init	SHA1_Init
216 #define SHA1Update	SHA1_Update
217 #define SHA1Final	SHA1_Final
218 #endif
219 
220 /*
221  * The following SA_LEN/SS_LEN dance comes from various source, notably
222  * OpenSMTP by way of OpenNTPD and OpenBGPD (thanks everyone!).  got-portable
223  * has tweaked a lot of the following macros to suit the needs of
224  * got-portable.
225  */
226 
227 /* From OpenNTPD portable */
228 #if !defined(SA_LEN)
229 # if defined(HAVE_STRUCT_SOCKADDR_SA_LEN)
230 #  define SA_LEN(x)	((x)->sa_len)
231 # else
232 #  define SA_LEN(x)     ((x)->sa_family == AF_INET6 ? \
233 			sizeof(struct sockaddr_in6) : \
234 			sizeof(struct sockaddr_in))
235 # endif
236 
237 #endif
238 
239 /* From OpenBGPD portable */
240 #if !defined(SS_LEN)
241 # if defined(HAVE_STRUCT_SOCKADDR_STORAGE_SS_LEN)
242 #  define SS_LEN(x)  ((x)->ss_len)
243 # else
244 #  define SS_LEN(x)  SA_LEN((struct sockaddr *)(x))
245 # endif
246 #endif
247 
248 #ifndef HAVE_ASPRINTF
249 /* asprintf.c */
250 int		 asprintf(char **, const char *, ...);
251 int		 vasprintf(char **, const char *, va_list);
252 #endif
253 
254 #ifndef HAVE_EXPLICIT_BZERO
255 /* explicit_bzero.c */
256 void		 explicit_bzero(void *, size_t);
257 #endif
258 
259 #ifndef HAVE_GETDTABLECOUNT
260 /* getdtablecount.c */
261 int		 getdtablecount(void);
262 #endif
263 
264 #ifndef HAVE_CLOSEFROM
265 /* closefrom.c */
266 void		 closefrom(int);
267 #endif
268 
269 #if defined (__FreeBSD__)
270 #define closefrom(fd) (closefrom(fd), 0)
271 #endif
272 
273 #ifndef HAVE_STRSEP
274 /* strsep.c */
275 char		*strsep(char **, const char *);
276 #endif
277 
278 #ifndef HAVE_STRTONUM
279 /* strtonum.c */
280 long long	 strtonum(const char *, long long, long long, const char **);
281 #endif
282 
283 #ifndef HAVE_STRLCPY
284 /* strlcpy.c */
285 size_t	 	 strlcpy(char *, const char *, size_t);
286 #endif
287 
288 #ifndef HAVE_STRLCAT
289 /* strlcat.c */
290 size_t	 	 strlcat(char *, const char *, size_t);
291 #endif
292 
293 #ifndef HAVE_STRNLEN
294 /* strnlen.c */
295 size_t		 strnlen(const char *, size_t);
296 #endif
297 
298 #ifndef HAVE_STRNDUP
299 /* strndup.c */
300 char		*strndup(const char *, size_t);
301 #endif
302 
303 #ifndef HAVE_GETPROGNAME
304 /* getprogname.c */
305 const char	*getprogname(void);
306 #endif
307 
308 #ifndef HAVE_GETLINE
309 /* getline.c */
310 ssize_t		 getline(char **, size_t *, FILE *);
311 #endif
312 
313 #ifndef HAVE_FREEZERO
314 /* freezero.c */
315 void		 freezero(void *, size_t);
316 #endif
317 
318 #ifndef HAVE_GETDTABLECOUNT
319 /* getdtablecount.c */
320 int		 getdtablecount(void);
321 #endif
322 
323 #ifndef HAVE_REALLOCARRAY
324 /* reallocarray.c */
325 void		*reallocarray(void *, size_t, size_t);
326 #endif
327 
328 #ifndef HAVE_RECALLOCARRAY
329 /* recallocarray.c */
330 void		*recallocarray(void *, size_t, size_t, size_t);
331 #endif
332 
333 #ifndef HAVE_SETPROCTITLE
334 /* setproctitle.c */
335 void 		 setproctitle(const char *, ...);
336 #endif
337 
338 #ifndef HAVE_FMT_SCALED
339 /* fmt_scaled.c */
340 int fmt_scaled(long long, char *);
341 int scan_scaled(char *, long long *);
342 #define FMT_SCALED_STRSIZE	7  /* minus sign, 4 digits, suffix, null byte */
343 #endif
344 
345 #ifndef HAVE_LIBBSD
346 /* getopt.c */
347 extern int	BSDopterr;
348 extern int	BSDoptind;
349 extern int	BSDoptopt;
350 extern int	BSDoptreset;
351 extern char    *BSDoptarg;
352 int	BSDgetopt(int, char *const *, const char *);
353 #define getopt(ac, av, o)  BSDgetopt(ac, av, o)
354 #define opterr             BSDopterr
355 #define optind             BSDoptind
356 #define optopt             BSDoptopt
357 #define optreset           BSDoptreset
358 #define optarg             BSDoptarg
359 #endif
360 #endif
361 
362 /* Check for some of the non-portable timespec*() functions.
363  * This should largely come from libbsd for systems which
364  * aren't BSD, but this will depend on how old the library
365  * is.
366  */
367 #ifndef timespecisset
368 #define	timespecisset(tsp) \
369 	((tsp)->tv_sec || (tsp)->tv_nsec)
370 #endif
371 
372 #ifndef timespecsub
373 #define	timespecsub(tsp, usp, vsp)					\
374 	do {								\
375 		(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;		\
376 		(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec;	\
377 		if ((vsp)->tv_nsec < 0) {				\
378 			(vsp)->tv_sec--;				\
379 			(vsp)->tv_nsec += 1000000000L;			\
380 		}							\
381 	} while (0)
382 #endif
383 
384 #ifndef timespeccmp
385 #define timespeccmp(tvp, uvp, cmp) 					\
386 (((tvp)->tv_sec == (uvp)->tv_sec) ? 					\
387 	((tvp)->tv_nsec cmp (uvp)->tv_nsec) : 				\
388 	((tvp)->tv_sec cmp (uvp)->tv_sec))
389 #endif
390 
391 #ifndef HAVE_BSD_MERGESORT
392 /* mergesort.c */
393 int mergesort(void *, size_t, size_t, int (*)(const void *, const void *));
394 #endif