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 
181 #define SHA512_BLOCK_LENGTH		128
182 typedef struct _SHA2_CTX {
183 	union {
184 		u_int32_t	st32[8];
185 		u_int64_t	st64[8];
186 	} state;
187 	u_int64_t	bitcount[2];
188 	u_int8_t	buffer[SHA512_BLOCK_LENGTH];
189 } SHA2_CTX;
190 #define SHA256Init SHA256_Init
191 #define SHA256Update SHA256_Update
192 #define SHA256Final SHA256_Final
193 #endif
194 
195 #ifndef __APPLE__
196 #ifdef HAVE_SHA_AS_SHA1
197 #  include <sha.h>
198 #endif
199 #ifdef HAVE_SHA1_AS_SHA1
200 #      include <sha1.h>
201 #endif
202 #ifdef HAVE_SHA2
203 #    include <sha2.h>
204 #else
205 #    include "sha2.h"
206 #endif
207 #ifdef HAVE_SHA256
208 #    include <sha256.h>
209 #endif
210 #endif
211 
212 /* Catch-all for systems where the header files don't exist and/or the below
213  * still are not defined.
214  */
215 #ifndef SHA256_DIGEST_LENGTH
216 #define SHA256_DIGEST_LENGTH 32
217 #endif
218 
219 #ifndef SHA256_DIGEST_STRING_LENGTH
220 #define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1)
221 #endif
222 
223 #if defined(__DragonFly__)
224 #include <openssl/sha.h>
225 #endif
226 
227 #ifdef NEEDS_SHA1_DEFS
228 #define SHA1_DIGEST_LENGTH		SHA_DIGEST_LENGTH
229 #define SHA1_DIGEST_STRING_LENGTH	(SHA1_DIGEST_LENGTH * 2 + 1)
230 
231 #define SHA1_CTX	SHA_CTX
232 #define SHA1Init	SHA1_Init
233 #define SHA1Update	SHA1_Update
234 #define SHA1Final	SHA1_Final
235 #endif
236 
237 /*
238  * The following SA_LEN/SS_LEN dance comes from various source, notably
239  * OpenSMTP by way of OpenNTPD and OpenBGPD (thanks everyone!).  got-portable
240  * has tweaked a lot of the following macros to suit the needs of
241  * got-portable.
242  */
243 
244 /* From OpenNTPD portable */
245 #if !defined(SA_LEN)
246 # if defined(HAVE_STRUCT_SOCKADDR_SA_LEN)
247 #  define SA_LEN(x)	((x)->sa_len)
248 # else
249 #  define SA_LEN(x)     ((x)->sa_family == AF_INET6 ? \
250 			sizeof(struct sockaddr_in6) : \
251 			sizeof(struct sockaddr_in))
252 # endif
253 
254 #endif
255 
256 /* From OpenBGPD portable */
257 #if !defined(SS_LEN)
258 # if defined(HAVE_STRUCT_SOCKADDR_STORAGE_SS_LEN)
259 #  define SS_LEN(x)  ((x)->ss_len)
260 # else
261 #  define SS_LEN(x)  SA_LEN((struct sockaddr *)(x))
262 # endif
263 #endif
264 
265 #ifndef HAVE_ASPRINTF
266 /* asprintf.c */
267 int		 asprintf(char **, const char *, ...);
268 int		 vasprintf(char **, const char *, va_list);
269 #endif
270 
271 #ifndef HAVE_EXPLICIT_BZERO
272 /* explicit_bzero.c */
273 void		 explicit_bzero(void *, size_t);
274 #endif
275 
276 #ifndef HAVE_GETDTABLECOUNT
277 /* getdtablecount.c */
278 int		 getdtablecount(void);
279 #endif
280 
281 #ifndef HAVE_CLOSEFROM
282 /* closefrom.c */
283 void		 closefrom(int);
284 #endif
285 
286 #if defined (__FreeBSD__)
287 #define closefrom(fd) (closefrom(fd), 0)
288 #endif
289 
290 #ifndef HAVE_STRSEP
291 /* strsep.c */
292 char		*strsep(char **, const char *);
293 #endif
294 
295 #ifndef HAVE_STRTONUM
296 /* strtonum.c */
297 long long	 strtonum(const char *, long long, long long, const char **);
298 #endif
299 
300 #ifndef HAVE_STRLCPY
301 /* strlcpy.c */
302 size_t	 	 strlcpy(char *, const char *, size_t);
303 #endif
304 
305 #ifndef HAVE_STRLCAT
306 /* strlcat.c */
307 size_t	 	 strlcat(char *, const char *, size_t);
308 #endif
309 
310 #ifndef HAVE_STRNLEN
311 /* strnlen.c */
312 size_t		 strnlen(const char *, size_t);
313 #endif
314 
315 #ifndef HAVE_STRNDUP
316 /* strndup.c */
317 char		*strndup(const char *, size_t);
318 #endif
319 
320 #ifndef HAVE_GETPROGNAME
321 /* getprogname.c */
322 const char	*getprogname(void);
323 #endif
324 
325 #ifndef HAVE_GETLINE
326 /* getline.c */
327 ssize_t		 getline(char **, size_t *, FILE *);
328 #endif
329 
330 #ifndef HAVE_FREEZERO
331 /* freezero.c */
332 void		 freezero(void *, size_t);
333 #endif
334 
335 #ifndef HAVE_GETDTABLECOUNT
336 /* getdtablecount.c */
337 int		 getdtablecount(void);
338 #endif
339 
340 #ifndef HAVE_REALLOCARRAY
341 /* reallocarray.c */
342 void		*reallocarray(void *, size_t, size_t);
343 #endif
344 
345 #ifndef HAVE_RECALLOCARRAY
346 /* recallocarray.c */
347 void		*recallocarray(void *, size_t, size_t, size_t);
348 #endif
349 
350 #ifndef HAVE_SETPROCTITLE
351 /* setproctitle.c */
352 void 		 setproctitle(const char *, ...);
353 #endif
354 
355 #ifndef HAVE_FMT_SCALED
356 /* fmt_scaled.c */
357 int fmt_scaled(long long, char *);
358 int scan_scaled(char *, long long *);
359 #define FMT_SCALED_STRSIZE	7  /* minus sign, 4 digits, suffix, null byte */
360 #endif
361 
362 #ifndef HAVE_LIBBSD
363 /* getopt.c */
364 extern int	BSDopterr;
365 extern int	BSDoptind;
366 extern int	BSDoptopt;
367 extern int	BSDoptreset;
368 extern char    *BSDoptarg;
369 int	BSDgetopt(int, char *const *, const char *);
370 #define getopt(ac, av, o)  BSDgetopt(ac, av, o)
371 #define opterr             BSDopterr
372 #define optind             BSDoptind
373 #define optopt             BSDoptopt
374 #define optreset           BSDoptreset
375 #define optarg             BSDoptarg
376 #endif
377 #endif
378 
379 /* Check for some of the non-portable timespec*() functions.
380  * This should largely come from libbsd for systems which
381  * aren't BSD, but this will depend on how old the library
382  * is.
383  */
384 #ifndef timespecisset
385 #define	timespecisset(tsp) \
386 	((tsp)->tv_sec || (tsp)->tv_nsec)
387 #endif
388 
389 #ifndef timespecsub
390 #define	timespecsub(tsp, usp, vsp)					\
391 	do {								\
392 		(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;		\
393 		(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec;	\
394 		if ((vsp)->tv_nsec < 0) {				\
395 			(vsp)->tv_sec--;				\
396 			(vsp)->tv_nsec += 1000000000L;			\
397 		}							\
398 	} while (0)
399 #endif
400 
401 #ifndef timespeccmp
402 #define timespeccmp(tvp, uvp, cmp) 					\
403 (((tvp)->tv_sec == (uvp)->tv_sec) ? 					\
404 	((tvp)->tv_nsec cmp (uvp)->tv_nsec) : 				\
405 	((tvp)->tv_sec cmp (uvp)->tv_sec))
406 #endif
407 
408 #ifndef HAVE_BSD_MERGESORT
409 /* mergesort.c */
410 int mergesort(void *, size_t, size_t, int (*)(const void *, const void *));
411 #endif