include/got_compat2.h

   1 /*
   2  * Copyright (c) 2023 Thomas Adam <thomas@xteddy.org>
   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 _GOT_COMPAT_H_2
  18 #define _GOT_COMPAT_H_2
  19
  20 #ifdef HAVE_STDINT_H
  21 #include <stdint.h>
  22 #else
  23 #include <inttypes.h>
  24 #endif
  25
  26 #include <limits.h>
  27 #include <sys/uio.h>
  28
  29 #if defined(__FreeBSD__)
  30 #include <sys/endian.h>
  31 #include <sys/capsicum.h>
  32 #elif defined(__APPLE__)
  33 #include <machine/endian.h>
  34 #include <libkern/OSByteOrder.h>
  35 #include "compat/bsd-poll.h"
  36
  37 #define FMT_SCALED_STRSIZE      7  /* minus sign, 4 digits, suffix, null byte */
  38
  39 #define htobe16(x) OSSwapHostToBigInt16(x)
  40 #define htole16(x) OSSwapHostToLittleInt16(x)
  41 #define be16toh(x) OSSwapBigToHostInt16(x)
  42 #define le16toh(x) OSSwapLittleToHostInt16(x)
  43
  44 #define htobe32(x) OSSwapHostToBigInt32(x)
  45 #define htole32(x) OSSwapHostToLittleInt32(x)
  46 #define be32toh(x) OSSwapBigToHostInt32(x)
  47 #define le32toh(x) OSSwapLittleToHostInt32(x)
  48
  49 #define htobe64(x) OSSwapHostToBigInt64(x)
  50 #define htole64(x) OSSwapHostToLittleInt64(x)
  51 #define be64toh(x) OSSwapBigToHostInt64(x)
  52 #define le64toh(x) OSSwapLittleToHostInt64(x)
  53
  54 #define st_atim st_atimespec
  55 #define st_ctim st_ctimespec
  56 #define st_mtim st_mtimespec
  57
  58 #else /* Linux, etc... */
  59 #include <endian.h>
  60 #include <grp.h>
  61 #include <stdlib.h>
  62 #endif
  63
  64 #ifndef __GNUC__
  65 #define __attribute__(a)
  66 #endif
  67
  68
  69 #ifndef UID_MAX
  70 # define UID_MAX        UINT_MAX        /* max value for a uid_t */
  71 #endif
  72 #ifndef GID_MAX
  73 # define GID_MAX        UINT_MAX        /* max value for a gid_t */
  74 #endif
  75
  76 /* For flock. */
  77 #ifndef O_EXLOCK
  78 #define O_EXLOCK 0
  79 #endif
  80
  81 #ifndef HAVE_FLOCK
  82 #define LOCK_SH 0
  83 #define LOCK_EX 0
  84 #define LOCK_NB 0
  85 #define flock(fd, op) (0)
  86 #else
  87 #include <sys/file.h>
  88 #endif
  89
  90 /* POSIX doesn't define WAIT_ANY, so provide it if it's not found. */
  91 #ifndef WAIT_ANY
  92 #define WAIT_ANY (-1)
  93 #endif
  94
  95 /* On FreeBSD (and possibly others), EAI_NODATA was removed, in favour of
  96  * using EAI_NONAME.
  97  */
  98 #ifndef EAI_NODATA
  99 #define EAI_NODATA EAI_NONAME
 100 #endif
 101
 102 #ifndef __dead
 103 #define __dead __attribute__ ((__noreturn__))
 104 #endif
 105
 106 #ifndef __unused
 107 #define __unused __attribute__ ((__unused__))
 108 #endif
 109
 110 #if !defined(__bounded__) && !defined(__OpenBSD__)
 111 #define __bounded__(a, b, c)
 112 #endif
 113
 114 #ifndef __OpenBSD__
 115 #define pledge(s, p) (0)
 116 #define unveil(s, p) (0)
 117 #endif
 118
 119 #ifndef __FreeBSD__
 120 #define cap_enter() (0)
 121 #endif
 122
 123 #ifndef HAVE_B64_NTOP
 124 #undef b64_ntop
 125 #undef b64_pton
 126 int              b64_ntop(u_char const *, size_t, char *, size_t);
 127 int              b64_pton(char const *, u_char *, size_t);
 128 #endif
 129
 130 #ifndef HAVE_SETRESGID
 131 #define setresgid(a, b, c) (0)
 132 #endif
 133
 134 #ifndef HAVE_SETRESUID
 135 #define setresuid(a, b, c) (0)
 136 #endif
 137
 138 #ifndef HAVE_LINUX_LANDLOCK_H
 139 #define landlock_no_fs() (0)
 140 #else
 141 int     landlock_no_fs(void);
 142 #endif
 143
 144 #ifndef INFTIM
 145 #define INFTIM -1
 146 #endif
 147
 148 #ifndef HAVE_BSD_UUID
 149 #include <uuid/uuid.h>
 150 #define uuid_s_ok 0
 151 #define uuid_s_bad_version  1
 152 #define uuid_s_invalid_string_uuid 2
 153 #define uuid_s_no_memory  3
 154
 155 /* Length of a node address (an IEEE 802 address). */
 156 #define _UUID_NODE_LEN  6
 157
 158 struct uuid {
 159         uint32_t time_low;
 160         uint16_t time_mid;
 161         uint16_t time_hi_and_version;
 162         uint8_t  clock_seq_hi_and_reserved;
 163         uint8_t  clock_seq_low;
 164         uint8_t  node[_UUID_NODE_LEN];
 165 };
 166
 167 int32_t uuid_equal(struct uuid *, struct uuid *, uint32_t *);
 168 int32_t uuid_is_nil(struct uuid *, uint32_t *);
 169 void uuid_create(uuid_t *, uint32_t *);
 170 void uuid_create_nil(struct uuid *, uint32_t *);
 171 void uuid_from_string(const char *, uuid_t *, uint32_t *);
 172 void uuid_to_string(uuid_t *, char **, uint32_t *);
 173 #else
 174 #include <uuid.h>
 175 #endif
 176
 177 #ifdef HAVE_QUEUE_H
 178 #include <sys/queue.h>
 179 #endif
 180
 181 #ifndef HAVE_TREE_H
 182 #include "compat/tree.h"
 183 #else
 184 #include <sys/tree.h>
 185 #endif
 186
 187 #ifdef HAVE_UTIL_H
 188 #include <util.h>
 189 #endif
 190
 191 #ifdef HAVE_LIBUTIL_H
 192 #include <libutil.h>
 193 #endif
 194
 195 #ifndef IOV_MAX
 196 # define IOV_MAX 1024
 197 #endif
 198
 199 #ifndef HAVE_IMSG
 200 #include "compat/imsg.h"
 201 #else
 202 #include <imsg.h>
 203 #endif
 204
 205 #ifndef HAVE_SIPHASH
 206 #include "compat/siphash.h"
 207 #else
 208 #include <siphash.h>
 209 #endif
 210
 211 /* Include Apple-specific headers.  Mostly for crypto.*/
 212 #if defined(__APPLE__)
 213 #define COMMON_DIGEST_FOR_OPENSSL
 214 #include <CommonCrypto/CommonDigest.h>
 215 #endif
 216
 217 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__)
 218 #define SHA256Init SHA256_Init
 219 #define SHA256Update SHA256_Update
 220 #define SHA256Final SHA256_Final
 221 #define SHA2_CTX SHA256_CTX
 222 #endif
 223
 224 #ifndef __APPLE__
 225 #ifdef HAVE_SHA_H
 226 #  include <sha.h>
 227 #endif
 228 #ifdef HAVE_SHA1_H
 229 #      include <sha1.h>
 230 #endif
 231 #ifdef HAVE_SHA2_H
 232 #    include <sha2.h>
 233 #endif
 234 #ifdef HAVE_SHA256_H
 235 #    include <sha256.h>
 236 #endif
 237 #endif
 238
 239 /* Catch-all for systems where the header files don't exist and/or the below
 240  * still are not defined.
 241  */
 242 #ifndef SHA256_DIGEST_LENGTH
 243 #define SHA256_DIGEST_LENGTH 32
 244 #endif
 245
 246 #ifndef SHA256_DIGEST_STRING_LENGTH
 247 #define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1)
 248 #endif
 249
 250 #if defined(__DragonFly__)
 251 #include <openssl/sha.h>
 252 #endif
 253
 254 #ifndef SHA1_DIGEST_LENGTH
 255 #define SHA1_DIGEST_LENGTH              SHA_DIGEST_LENGTH
 256 #define SHA1_DIGEST_STRING_LENGTH       (SHA1_DIGEST_LENGTH * 2 + 1)
 257
 258 #define SHA1_CTX        SHA_CTX
 259 #define SHA1Init        SHA1_Init
 260 #define SHA1Update      SHA1_Update
 261 #define SHA1Final       SHA1_Final
 262 #endif
 263
 264 /* SOCK_NONBLOCK isn't available across BSDs... */
 265 #if !defined(SOCK_NONBLOCK) && !defined(__linux__)
 266 #define SOCK_NONBLOCK 00004000
 267 #endif
 268
 269 #ifndef HAVE_ASPRINTF
 270 /* asprintf.c */
 271 int              asprintf(char **, const char *, ...);
 272 int              vasprintf(char **, const char *, va_list);
 273 #endif
 274
 275 #ifndef HAVE_EXPLICIT_BZERO
 276 /* explicit_bzero.c */
 277 void             explicit_bzero(void *, size_t);
 278 #endif
 279
 280 #ifndef HAVE_GETDTABLECOUNT
 281 /* getdtablecount.c */
 282 int              getdtablecount(void);
 283 #endif
 284
 285 #ifndef HAVE_CLOSEFROM
 286 /* closefrom.c */
 287 void             closefrom(int);
 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 #if !defined(HAVE_LIBBSD) && !defined(HAVE_GETOPT_OPTRESET)
 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
 378 /* Check for some of the non-portable timespec*() functions.
 379  * This should largely come from libbsd for systems which
 380  * aren't BSD, but this will depend on how old the library
 381  * is.
 382  */
 383 #ifndef timespecisset
 384 #define timespecisset(tsp) \
 385         ((tsp)->tv_sec || (tsp)->tv_nsec)
 386 #endif
 387
 388 #ifndef timespecsub
 389 #define timespecsub(tsp, usp, vsp)                                      \
 390         do {                                                            \
 391                 (vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;          \
 392                 (vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec;       \
 393                 if ((vsp)->tv_nsec < 0) {                               \
 394                         (vsp)->tv_sec--;                                \
 395                         (vsp)->tv_nsec += 1000000000L;                  \
 396                 }                                                       \
 397         } while (0)
 398 #endif
 399
 400 #ifndef timespeccmp
 401 #define timespeccmp(tvp, uvp, cmp)                                      \
 402 (((tvp)->tv_sec == (uvp)->tv_sec) ?                                     \
 403         ((tvp)->tv_nsec cmp (uvp)->tv_nsec) :                           \
 404         ((tvp)->tv_sec cmp (uvp)->tv_sec))
 405 #endif
 406
 407 #ifndef HAVE_MERGESORT
 408 /* mergesort.c */
 409 int mergesort(void *, size_t, size_t, int (*)(const void *, const void *));
 410 #endif
 411 #endif