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defines.h
1 /*
2  * Copyright (c) 1999-2003 Damien Miller. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  * notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  * notice, this list of conditions and the following disclaimer in the
11  * documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23  */
24 
25 #ifndef _DEFINES_H
26 #define _DEFINES_H
27 
28 /* Constants */
29 
30 #if defined(HAVE_DECL_SHUT_RD) && HAVE_DECL_SHUT_RD == 0
31 enum
32 {
33  SHUT_RD = 0, /* No more receptions. */
34  SHUT_WR, /* No more transmissions. */
35  SHUT_RDWR /* No more receptions or transmissions. */
36 };
37 # define SHUT_RD SHUT_RD
38 # define SHUT_WR SHUT_WR
39 # define SHUT_RDWR SHUT_RDWR
40 #endif
41 
42 /*
43  * Cygwin doesn't really have a notion of reserved ports. It is still
44  * is useful on the client side so for compatibility it defines as 1024 via
45  * netinet/in.h inside an enum. We * don't actually want that restriction
46  * so we want to set that to zero, but we can't do it direct in config.h
47  * because it'll cause a conflicting definition the first time we include
48  * netinet/in.h.
49  */
50 
51 #ifdef HAVE_CYGWIN
52 #define IPPORT_RESERVED 0
53 #endif
54 
55 /*
56  * Definitions for IP type of service (ip_tos)
57  */
58 #include <netinet/in_systm.h>
59 #include <netinet/ip.h>
60 #ifndef IPTOS_LOWDELAY
61 # define IPTOS_LOWDELAY 0x10
62 # define IPTOS_THROUGHPUT 0x08
63 # define IPTOS_RELIABILITY 0x04
64 # define IPTOS_LOWCOST 0x02
65 # define IPTOS_MINCOST IPTOS_LOWCOST
66 #endif /* IPTOS_LOWDELAY */
67 
68 /*
69  * Definitions for DiffServ Codepoints as per RFC2474
70  */
71 #ifndef IPTOS_DSCP_AF11
72 # define IPTOS_DSCP_AF11 0x28
73 # define IPTOS_DSCP_AF12 0x30
74 # define IPTOS_DSCP_AF13 0x38
75 # define IPTOS_DSCP_AF21 0x48
76 # define IPTOS_DSCP_AF22 0x50
77 # define IPTOS_DSCP_AF23 0x58
78 # define IPTOS_DSCP_AF31 0x68
79 # define IPTOS_DSCP_AF32 0x70
80 # define IPTOS_DSCP_AF33 0x78
81 # define IPTOS_DSCP_AF41 0x88
82 # define IPTOS_DSCP_AF42 0x90
83 # define IPTOS_DSCP_AF43 0x98
84 # define IPTOS_DSCP_EF 0xb8
85 #endif /* IPTOS_DSCP_AF11 */
86 #ifndef IPTOS_DSCP_CS0
87 # define IPTOS_DSCP_CS0 0x00
88 # define IPTOS_DSCP_CS1 0x20
89 # define IPTOS_DSCP_CS2 0x40
90 # define IPTOS_DSCP_CS3 0x60
91 # define IPTOS_DSCP_CS4 0x80
92 # define IPTOS_DSCP_CS5 0xa0
93 # define IPTOS_DSCP_CS6 0xc0
94 # define IPTOS_DSCP_CS7 0xe0
95 #endif /* IPTOS_DSCP_CS0 */
96 #ifndef IPTOS_DSCP_EF
97 # define IPTOS_DSCP_EF 0xb8
98 #endif /* IPTOS_DSCP_EF */
99 #ifndef IPTOS_DSCP_LE
100 # define IPTOS_DSCP_LE 0x01
101 #endif /* IPTOS_DSCP_LE */
102 #ifndef IPTOS_PREC_CRITIC_ECP
103 # define IPTOS_PREC_CRITIC_ECP 0xa0
104 #endif
105 #ifndef IPTOS_PREC_INTERNETCONTROL
106 # define IPTOS_PREC_INTERNETCONTROL 0xc0
107 #endif
108 #ifndef IPTOS_PREC_NETCONTROL
109 # define IPTOS_PREC_NETCONTROL 0xe0
110 #endif
111 
112 #ifndef PATH_MAX
113 # ifdef _POSIX_PATH_MAX
114 # define PATH_MAX _POSIX_PATH_MAX
115 # endif
116 #endif
117 
118 #ifndef MAXPATHLEN
119 # ifdef PATH_MAX
120 # define MAXPATHLEN PATH_MAX
121 # else /* PATH_MAX */
122 # define MAXPATHLEN 64
123 # endif /* PATH_MAX */
124 #endif /* MAXPATHLEN */
125 
126 #ifndef HOST_NAME_MAX
127 # include "netdb.h" /* for MAXHOSTNAMELEN */
128 # if defined(_POSIX_HOST_NAME_MAX)
129 # define HOST_NAME_MAX _POSIX_HOST_NAME_MAX
130 # elif defined(MAXHOSTNAMELEN)
131 # define HOST_NAME_MAX MAXHOSTNAMELEN
132 # else
133 # define HOST_NAME_MAX 255
134 # endif
135 #endif /* HOST_NAME_MAX */
136 
137 #if defined(HAVE_DECL_MAXSYMLINKS) && HAVE_DECL_MAXSYMLINKS == 0
138 # define MAXSYMLINKS 5
139 #endif
140 
141 #ifndef STDIN_FILENO
142 # define STDIN_FILENO 0
143 #endif
144 #ifndef STDOUT_FILENO
145 # define STDOUT_FILENO 1
146 #endif
147 #ifndef STDERR_FILENO
148 # define STDERR_FILENO 2
149 #endif
150 
151 #ifndef NGROUPS_MAX /* Disable groupaccess if NGROUP_MAX is not set */
152 #ifdef NGROUPS
153 #define NGROUPS_MAX NGROUPS
154 #else
155 #define NGROUPS_MAX 0
156 #endif
157 #endif
158 
159 #if defined(HAVE_DECL_O_NONBLOCK) && HAVE_DECL_O_NONBLOCK == 0
160 # define O_NONBLOCK 00004 /* Non Blocking Open */
161 #endif
162 
163 #ifndef S_IFSOCK
164 # define S_IFSOCK 0
165 #endif /* S_IFSOCK */
166 
167 #ifndef S_ISDIR
168 # define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR))
169 #endif /* S_ISDIR */
170 
171 #ifndef S_ISREG
172 # define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))
173 #endif /* S_ISREG */
174 
175 #ifndef S_ISLNK
176 # define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
177 #endif /* S_ISLNK */
178 
179 #ifndef S_IXUSR
180 # define S_IXUSR 0000100 /* execute/search permission, */
181 # define S_IXGRP 0000010 /* execute/search permission, */
182 # define S_IXOTH 0000001 /* execute/search permission, */
183 # define _S_IWUSR 0000200 /* write permission, */
184 # define S_IWUSR _S_IWUSR /* write permission, owner */
185 # define S_IWGRP 0000020 /* write permission, group */
186 # define S_IWOTH 0000002 /* write permission, other */
187 # define S_IRUSR 0000400 /* read permission, owner */
188 # define S_IRGRP 0000040 /* read permission, group */
189 # define S_IROTH 0000004 /* read permission, other */
190 # define S_IRWXU 0000700 /* read, write, execute */
191 # define S_IRWXG 0000070 /* read, write, execute */
192 # define S_IRWXO 0000007 /* read, write, execute */
193 #endif /* S_IXUSR */
194 
195 #if !defined(MAP_ANON) && defined(MAP_ANONYMOUS)
196 #define MAP_ANON MAP_ANONYMOUS
197 #endif
198 
199 #ifndef MAP_FAILED
200 # define MAP_FAILED ((void *)-1)
201 #endif
202 
203 /*
204 SCO Open Server 3 has INADDR_LOOPBACK defined in rpc/rpc.h but
205 including rpc/rpc.h breaks Solaris 6
206 */
207 #ifndef INADDR_LOOPBACK
208 #define INADDR_LOOPBACK ((u_long)0x7f000001)
209 #endif
210 
211 /* Types */
212 
213 /* If sys/types.h does not supply intXX_t, supply them ourselves */
214 /* (or die trying) */
215 
216 #ifndef HAVE_U_INT
217 typedef unsigned int u_int;
218 #endif
219 
220 #ifndef HAVE_INTXX_T
221 typedef signed char int8_t;
222 # if (SIZEOF_SHORT_INT == 2)
223 typedef short int int16_t;
224 # else
225 # error "16 bit int type not found."
226 # endif
227 # if (SIZEOF_INT == 4)
228 typedef int int32_t;
229 # else
230 # error "32 bit int type not found."
231 # endif
232 #endif
233 
234 /* If sys/types.h does not supply u_intXX_t, supply them ourselves */
235 #ifndef HAVE_U_INTXX_T
236 # ifdef HAVE_UINTXX_T
237 typedef uint8_t u_int8_t;
238 typedef uint16_t u_int16_t;
239 typedef uint32_t u_int32_t;
240 # define HAVE_U_INTXX_T 1
241 # else
242 typedef unsigned char u_int8_t;
243 # if (SIZEOF_SHORT_INT == 2)
244 typedef unsigned short int u_int16_t;
245 # else
246 # error "16 bit int type not found."
247 # endif
248 # if (SIZEOF_INT == 4)
249 typedef unsigned int u_int32_t;
250 # else
251 # error "32 bit int type not found."
252 # endif
253 # endif
254 #define __BIT_TYPES_DEFINED__
255 #endif
256 
257 #if !defined(LLONG_MIN) && defined(LONG_LONG_MIN)
258 #define LLONG_MIN LONG_LONG_MIN
259 #endif
260 #if !defined(LLONG_MAX) && defined(LONG_LONG_MAX)
261 #define LLONG_MAX LONG_LONG_MAX
262 #endif
263 
264 #ifndef UINT32_MAX
265 # if defined(HAVE_DECL_UINT32_MAX) && (HAVE_DECL_UINT32_MAX == 0)
266 # if (SIZEOF_INT == 4)
267 # define UINT32_MAX UINT_MAX
268 # endif
269 # endif
270 #endif
271 
272 /* 64-bit types */
273 #ifndef HAVE_INT64_T
274 # if (SIZEOF_LONG_INT == 8)
275 typedef long int int64_t;
276 # else
277 # if (SIZEOF_LONG_LONG_INT == 8)
278 typedef long long int int64_t;
279 # endif
280 # endif
281 #endif
282 #ifndef HAVE_U_INT64_T
283 # if (SIZEOF_LONG_INT == 8)
284 typedef unsigned long int u_int64_t;
285 # else
286 # if (SIZEOF_LONG_LONG_INT == 8)
287 typedef unsigned long long int u_int64_t;
288 # endif
289 # endif
290 #endif
291 
292 #ifndef HAVE_UINTXX_T
293 typedef u_int8_t uint8_t;
294 typedef u_int16_t uint16_t;
295 typedef u_int32_t uint32_t;
296 typedef u_int64_t uint64_t;
297 #endif
298 
299 #ifndef HAVE_INTMAX_T
300 typedef long long intmax_t;
301 #endif
302 
303 #ifndef HAVE_UINTMAX_T
304 typedef unsigned long long uintmax_t;
305 #endif
306 
307 #if SIZEOF_TIME_T == SIZEOF_LONG_LONG_INT
308 # define SSH_TIME_T_MAX LLONG_MAX
309 #else
310 # define SSH_TIME_T_MAX INT_MAX
311 #endif
312 
313 #ifndef HAVE_U_CHAR
314 typedef unsigned char u_char;
315 # define HAVE_U_CHAR
316 #endif /* HAVE_U_CHAR */
317 
318 #ifndef ULLONG_MAX
319 # define ULLONG_MAX ((unsigned long long)-1)
320 #endif
321 
322 #ifndef SIZE_T_MAX
323 #define SIZE_T_MAX ULONG_MAX
324 #endif /* SIZE_T_MAX */
325 
326 #ifndef HAVE_SIZE_T
327 typedef unsigned int size_t;
328 # define HAVE_SIZE_T
329 # define SIZE_T_MAX UINT_MAX
330 #endif /* HAVE_SIZE_T */
331 
332 #ifndef SIZE_MAX
333 #define SIZE_MAX SIZE_T_MAX
334 #endif
335 
336 #ifndef INT32_MAX
337 # if (SIZEOF_INT == 4)
338 # define INT32_MAX INT_MAX
339 # elif (SIZEOF_LONG == 4)
340 # define INT32_MAX LONG_MAX
341 # else
342 # error "need INT32_MAX"
343 # endif
344 #endif
345 
346 #ifndef INT64_MAX
347 # if (SIZEOF_INT == 8)
348 # define INT64_MAX INT_MAX
349 # elif (SIZEOF_LONG == 8)
350 # define INT64_MAX LONG_MAX
351 # elif (SIZEOF_LONG_LONG_INT == 8)
352 # define INT64_MAX LLONG_MAX
353 # else
354 # error "need INT64_MAX"
355 # endif
356 #endif
357 
358 #ifndef HAVE_SSIZE_T
359 typedef int ssize_t;
360 #define SSIZE_MAX INT_MAX
361 # define HAVE_SSIZE_T
362 #endif /* HAVE_SSIZE_T */
363 
364 #ifndef HAVE_CLOCK_T
365 typedef long clock_t;
366 # define HAVE_CLOCK_T
367 #endif /* HAVE_CLOCK_T */
368 
369 #ifndef HAVE_SA_FAMILY_T
370 typedef int sa_family_t;
371 # define HAVE_SA_FAMILY_T
372 #endif /* HAVE_SA_FAMILY_T */
373 
374 #ifndef HAVE_PID_T
375 typedef int pid_t;
376 # define HAVE_PID_T
377 #endif /* HAVE_PID_T */
378 
379 #ifndef HAVE_SIG_ATOMIC_T
380 typedef int sig_atomic_t;
381 # define HAVE_SIG_ATOMIC_T
382 #endif /* HAVE_SIG_ATOMIC_T */
383 
384 #ifndef HAVE_MODE_T
385 typedef int mode_t;
386 # define HAVE_MODE_T
387 #endif /* HAVE_MODE_T */
388 
389 #if !defined(HAVE_SS_FAMILY_IN_SS) && defined(HAVE___SS_FAMILY_IN_SS)
390 # define ss_family __ss_family
391 #endif /* !defined(HAVE_SS_FAMILY_IN_SS) && defined(HAVE_SA_FAMILY_IN_SS) */
392 
393 #ifndef HAVE_SYS_UN_H
394 struct sockaddr_un {
395  short sun_family; /* AF_UNIX */
396  char sun_path[108]; /* path name (gag) */
397 };
398 #endif /* HAVE_SYS_UN_H */
399 
400 #ifndef HAVE_IN_ADDR_T
401 typedef u_int32_t in_addr_t;
402 #endif
403 #ifndef HAVE_IN_PORT_T
404 typedef u_int16_t in_port_t;
405 #endif
406 
407 #if defined(BROKEN_SYS_TERMIO_H) && !defined(_STRUCT_WINSIZE)
408 #define _STRUCT_WINSIZE
409 struct winsize {
410  unsigned short ws_row; /* rows, in characters */
411  unsigned short ws_col; /* columns, in character */
412  unsigned short ws_xpixel; /* horizontal size, pixels */
413  unsigned short ws_ypixel; /* vertical size, pixels */
414 };
415 #endif
416 
417 /* bits needed for select that may not be in the system headers */
418 #ifndef HAVE_FD_MASK
419  typedef unsigned long int fd_mask;
420 #endif
421 
422 #if defined(HAVE_DECL_NFDBITS) && HAVE_DECL_NFDBITS == 0
423 # define NFDBITS (8 * sizeof(unsigned long))
424 #endif
425 
426 #if defined(HAVE_DECL_HOWMANY) && HAVE_DECL_HOWMANY == 0
427 # define howmany(x,y) (((x)+((y)-1))/(y))
428 #endif
429 
430 /* Paths */
431 
432 #ifndef _PATH_BSHELL
433 # define _PATH_BSHELL "/bin/sh"
434 #endif
435 
436 #ifdef USER_PATH
437 # ifdef _PATH_STDPATH
438 # undef _PATH_STDPATH
439 # endif
440 # define _PATH_STDPATH USER_PATH
441 #endif
442 
443 #ifndef _PATH_STDPATH
444 # define _PATH_STDPATH "/usr/bin:/bin:/usr/sbin:/sbin"
445 #endif
446 
447 #ifndef SUPERUSER_PATH
448 # define SUPERUSER_PATH _PATH_STDPATH
449 #endif
450 
451 #ifndef _PATH_DEVNULL
452 # define _PATH_DEVNULL "/dev/null"
453 #endif
454 
455 /* user may have set a different path */
456 #if defined(_PATH_MAILDIR) && defined(MAIL_DIRECTORY)
457 # undef _PATH_MAILDIR
458 #endif /* defined(_PATH_MAILDIR) && defined(MAIL_DIRECTORY) */
459 
460 #ifdef MAIL_DIRECTORY
461 # define _PATH_MAILDIR MAIL_DIRECTORY
462 #endif
463 
464 #ifndef _PATH_NOLOGIN
465 # define _PATH_NOLOGIN "/etc/nologin"
466 #endif
467 
468 /* Define this to be the path of the xauth program. */
469 #ifdef XAUTH_PATH
470 #define _PATH_XAUTH XAUTH_PATH
471 #endif /* XAUTH_PATH */
472 
473 /* derived from XF4/xc/lib/dps/Xlibnet.h */
474 #ifndef X_UNIX_PATH
475 # ifdef __hpux
476 # define X_UNIX_PATH "/var/spool/sockets/X11/%u"
477 # else
478 # define X_UNIX_PATH "/tmp/.X11-unix/X%u"
479 # endif
480 #endif /* X_UNIX_PATH */
481 #define _PATH_UNIX_X X_UNIX_PATH
482 
483 #ifndef _PATH_TTY
484 # define _PATH_TTY "/dev/tty"
485 #endif
486 
487 /* Macros */
488 
489 #if defined(HAVE_LOGIN_GETCAPBOOL) && defined(HAVE_LOGIN_CAP_H)
490 # define HAVE_LOGIN_CAP
491 #endif
492 
493 #ifndef MAX
494 # define MAX(a,b) (((a)>(b))?(a):(b))
495 # define MIN(a,b) (((a)<(b))?(a):(b))
496 #endif
497 
498 #ifndef roundup
499 # define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
500 #endif
501 
502 #ifndef timersub
503 #define timersub(a, b, result) \
504  do { \
505  (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \
506  (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \
507  if ((result)->tv_usec < 0) { \
508  --(result)->tv_sec; \
509  (result)->tv_usec += 1000000; \
510  } \
511  } while (0)
512 #endif
513 
514 #ifndef TIMEVAL_TO_TIMESPEC
515 #define TIMEVAL_TO_TIMESPEC(tv, ts) { \
516  (ts)->tv_sec = (tv)->tv_sec; \
517  (ts)->tv_nsec = (tv)->tv_usec * 1000; \
518 }
519 #endif
520 
521 #ifndef TIMESPEC_TO_TIMEVAL
522 #define TIMESPEC_TO_TIMEVAL(tv, ts) { \
523  (tv)->tv_sec = (ts)->tv_sec; \
524  (tv)->tv_usec = (ts)->tv_nsec / 1000; \
525 }
526 #endif
527 
528 #ifndef timespeccmp
529 #define timespeccmp(tsp, usp, cmp) \
530  (((tsp)->tv_sec == (usp)->tv_sec) ? \
531  ((tsp)->tv_nsec cmp (usp)->tv_nsec) : \
532  ((tsp)->tv_sec cmp (usp)->tv_sec))
533 #endif
534 
535 #ifndef __P
536 # define __P(x) x
537 #endif
538 
539 #if !defined(IN6_IS_ADDR_V4MAPPED)
540 # define IN6_IS_ADDR_V4MAPPED(a) \
541  ((((u_int32_t *) (a))[0] == 0) && (((u_int32_t *) (a))[1] == 0) && \
542  (((u_int32_t *) (a))[2] == htonl (0xffff)))
543 #endif /* !defined(IN6_IS_ADDR_V4MAPPED) */
544 
545 #if !defined(__GNUC__) || (__GNUC__ < 2)
546 # define __attribute__(x)
547 #endif /* !defined(__GNUC__) || (__GNUC__ < 2) */
548 
549 #if !defined(HAVE_ATTRIBUTE__SENTINEL__) && !defined(__sentinel__)
550 # define __sentinel__
551 #endif
552 
553 #if !defined(HAVE_ATTRIBUTE__BOUNDED__) && !defined(__bounded__)
554 # define __bounded__(x, y, z)
555 #endif
556 
557 #if !defined(HAVE_ATTRIBUTE__NONNULL__) && !defined(__nonnull__)
558 # define __nonnull__(x)
559 #endif
560 
561 #ifndef OSSH_ALIGNBYTES
562 #define OSSH_ALIGNBYTES (sizeof(int) - 1)
563 #endif
564 #ifndef __CMSG_ALIGN
565 #define __CMSG_ALIGN(p) (((u_int)(p) + OSSH_ALIGNBYTES) &~ OSSH_ALIGNBYTES)
566 #endif
567 
568 /* Length of the contents of a control message of length len */
569 #ifndef CMSG_LEN
570 #define CMSG_LEN(len) (__CMSG_ALIGN(sizeof(struct cmsghdr)) + (len))
571 #endif
572 
573 /* Length of the space taken up by a padded control message of length len */
574 #ifndef CMSG_SPACE
575 #define CMSG_SPACE(len) (__CMSG_ALIGN(sizeof(struct cmsghdr)) + __CMSG_ALIGN(len))
576 #endif
577 
578 /* given pointer to struct cmsghdr, return pointer to data */
579 #ifndef CMSG_DATA
580 #define CMSG_DATA(cmsg) ((u_char *)(cmsg) + __CMSG_ALIGN(sizeof(struct cmsghdr)))
581 #endif /* CMSG_DATA */
582 
583 /*
584  * RFC 2292 requires to check msg_controllen, in case that the kernel returns
585  * an empty list for some reasons.
586  */
587 #ifndef CMSG_FIRSTHDR
588 #define CMSG_FIRSTHDR(mhdr) \
589  ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \
590  (struct cmsghdr *)(mhdr)->msg_control : \
591  (struct cmsghdr *)NULL)
592 #endif /* CMSG_FIRSTHDR */
593 
594 #if defined(HAVE_DECL_OFFSETOF) && HAVE_DECL_OFFSETOF == 0
595 # define offsetof(type, member) ((size_t) &((type *)0)->member)
596 #endif
597 
598 /* Set up BSD-style BYTE_ORDER definition if it isn't there already */
599 /* XXX: doesn't try to cope with strange byte orders (PDP_ENDIAN) */
600 #ifndef BYTE_ORDER
601 # ifndef LITTLE_ENDIAN
602 # define LITTLE_ENDIAN 1234
603 # endif /* LITTLE_ENDIAN */
604 # ifndef BIG_ENDIAN
605 # define BIG_ENDIAN 4321
606 # endif /* BIG_ENDIAN */
607 # ifdef WORDS_BIGENDIAN
608 # define BYTE_ORDER BIG_ENDIAN
609 # else /* WORDS_BIGENDIAN */
610 # define BYTE_ORDER LITTLE_ENDIAN
611 # endif /* WORDS_BIGENDIAN */
612 #endif /* BYTE_ORDER */
613 
614 /* Function replacement / compatibility hacks */
615 
616 #if !defined(HAVE_GETADDRINFO) && (defined(HAVE_OGETADDRINFO) || defined(HAVE_NGETADDRINFO))
617 # define HAVE_GETADDRINFO
618 #endif
619 
620 #ifndef HAVE_GETOPT_OPTRESET
621 # undef getopt
622 # undef opterr
623 # undef optind
624 # undef optopt
625 # undef optreset
626 # undef optarg
627 # define getopt(ac, av, o) BSDgetopt(ac, av, o)
628 # define opterr BSDopterr
629 # define optind BSDoptind
630 # define optopt BSDoptopt
631 # define optreset BSDoptreset
632 # define optarg BSDoptarg
633 #endif
634 
635 #if defined(BROKEN_GETADDRINFO) && defined(HAVE_GETADDRINFO)
636 # undef HAVE_GETADDRINFO
637 #endif
638 #if defined(BROKEN_GETADDRINFO) && defined(HAVE_FREEADDRINFO)
639 # undef HAVE_FREEADDRINFO
640 #endif
641 #if defined(BROKEN_GETADDRINFO) && defined(HAVE_GAI_STRERROR)
642 # undef HAVE_GAI_STRERROR
643 #endif
644 
645 #if defined(HAVE_GETADDRINFO)
646 # if defined(HAVE_DECL_AI_NUMERICSERV) && HAVE_DECL_AI_NUMERICSERV == 0
647 # define AI_NUMERICSERV 0
648 # endif
649 #endif
650 
651 #if defined(BROKEN_UPDWTMPX) && defined(HAVE_UPDWTMPX)
652 # undef HAVE_UPDWTMPX
653 #endif
654 
655 #if defined(BROKEN_SHADOW_EXPIRE) && defined(HAS_SHADOW_EXPIRE)
656 # undef HAS_SHADOW_EXPIRE
657 #endif
658 
659 #if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT) && \
660  defined(SYSLOG_R_SAFE_IN_SIGHAND)
661 # define DO_LOG_SAFE_IN_SIGHAND
662 #endif
663 
664 #if !defined(HAVE_MEMMOVE) && defined(HAVE_BCOPY)
665 # define memmove(s1, s2, n) bcopy((s2), (s1), (n))
666 #endif /* !defined(HAVE_MEMMOVE) && defined(HAVE_BCOPY) */
667 
668 #ifndef GETPGRP_VOID
669 # include <unistd.h>
670 # define getpgrp() getpgrp(0)
671 #endif
672 
673 #ifdef USE_BSM_AUDIT
674 # define SSH_AUDIT_EVENTS
675 # define CUSTOM_SSH_AUDIT_EVENTS
676 #endif
677 
678 #ifdef USE_LINUX_AUDIT
679 # define SSH_AUDIT_EVENTS
680 # define CUSTOM_SSH_AUDIT_EVENTS
681 #endif
682 
683 #if !defined(HAVE___func__) && defined(HAVE___FUNCTION__)
684 # define __func__ __FUNCTION__
685 #elif !defined(HAVE___func__)
686 # define __func__ ""
687 #endif
688 
689 #if defined(KRB5) && !defined(HEIMDAL)
690 # define krb5_get_err_text(context,code) error_message(code)
691 #endif
692 
693 /* Maximum number of file descriptors available */
694 #ifdef HAVE_SYSCONF
695 # define SSH_SYSFDMAX sysconf(_SC_OPEN_MAX)
696 #else
697 # define SSH_SYSFDMAX 10000
698 #endif
699 
700 #ifdef FSID_HAS_VAL
701 /* encode f_fsid into a 64 bit value */
702 #define FSID_TO_ULONG(f) \
703  ((((u_int64_t)(f).val[0] & 0xffffffffUL) << 32) | \
704  ((f).val[1] & 0xffffffffUL))
705 #elif defined(FSID_HAS___VAL)
706 #define FSID_TO_ULONG(f) \
707  ((((u_int64_t)(f).__val[0] & 0xffffffffUL) << 32) | \
708  ((f).__val[1] & 0xffffffffUL))
709 #else
710 # define FSID_TO_ULONG(f) ((f))
711 #endif
712 
713 #if defined(__Lynx__)
714  /*
715  * LynxOS defines these in param.h which we do not want to include since
716  * it will also pull in a bunch of kernel definitions.
717  */
718 # define ALIGNBYTES (sizeof(int) - 1)
719 # define ALIGN(p) (((unsigned)p + ALIGNBYTES) & ~ALIGNBYTES)
720  /* Missing prototypes on LynxOS */
721  int snprintf (char *, size_t, const char *, ...);
722  int mkstemp (char *);
723  char *crypt (const char *, const char *);
724  int seteuid (uid_t);
725  int setegid (gid_t);
726  char *mkdtemp (char *);
727  int rresvport_af (int *, sa_family_t);
728  int innetgr (const char *, const char *, const char *, const char *);
729 #endif
730 
731 /*
732  * Define this to use pipes instead of socketpairs for communicating with the
733  * client program. Socketpairs do not seem to work on all systems.
734  *
735  * configure.ac sets this for a few OS's which are known to have problems
736  * but you may need to set it yourself
737  */
738 /* #define USE_PIPES 1 */
739 
744 /* FIXME: put default paths back in */
745 #ifndef UTMP_FILE
746 # ifdef _PATH_UTMP
747 # define UTMP_FILE _PATH_UTMP
748 # else
749 # ifdef CONF_UTMP_FILE
750 # define UTMP_FILE CONF_UTMP_FILE
751 # endif
752 # endif
753 #endif
754 #ifndef WTMP_FILE
755 # ifdef _PATH_WTMP
756 # define WTMP_FILE _PATH_WTMP
757 # else
758 # ifdef CONF_WTMP_FILE
759 # define WTMP_FILE CONF_WTMP_FILE
760 # endif
761 # endif
762 #endif
763 /* pick up the user's location for lastlog if given */
764 #ifndef LASTLOG_FILE
765 # ifdef _PATH_LASTLOG
766 # define LASTLOG_FILE _PATH_LASTLOG
767 # else
768 # ifdef CONF_LASTLOG_FILE
769 # define LASTLOG_FILE CONF_LASTLOG_FILE
770 # endif
771 # endif
772 #endif
773 
774 #if defined(HAVE_SHADOW_H) && !defined(DISABLE_SHADOW)
775 # define USE_SHADOW
776 #endif
777 
778 /* The login() library function in libutil is first choice */
779 #if defined(HAVE_LOGIN) && !defined(DISABLE_LOGIN)
780 # define USE_LOGIN
781 
782 #else
783 /* Simply select your favourite login types. */
784 /* Can't do if-else because some systems use several... <sigh> */
785 # if !defined(DISABLE_UTMPX)
786 # define USE_UTMPX
787 # endif
788 # if defined(UTMP_FILE) && !defined(DISABLE_UTMP)
789 # define USE_UTMP
790 # endif
791 # if defined(WTMPX_FILE) && !defined(DISABLE_WTMPX)
792 # define USE_WTMPX
793 # endif
794 # if defined(WTMP_FILE) && !defined(DISABLE_WTMP)
795 # define USE_WTMP
796 # endif
797 
798 #endif
799 
800 #ifndef UT_LINESIZE
801 # define UT_LINESIZE 8
802 #endif
803 
804 /* I hope that the presence of LASTLOG_FILE is enough to detect this */
805 #if defined(LASTLOG_FILE) && !defined(DISABLE_LASTLOG)
806 # define USE_LASTLOG
807 #endif
808 
809 #ifdef HAVE_OSF_SIA
810 # ifdef USE_SHADOW
811 # undef USE_SHADOW
812 # endif
813 # define CUSTOM_SYS_AUTH_PASSWD 1
814 #endif
815 
816 #if defined(HAVE_LIBIAF) && defined(HAVE_SET_ID) && !defined(HAVE_SECUREWARE)
817 # define CUSTOM_SYS_AUTH_PASSWD 1
818 #endif
819 #if defined(HAVE_LIBIAF) && defined(HAVE_SET_ID) && !defined(BROKEN_LIBIAF)
820 # define USE_LIBIAF
821 #endif
822 
823 /* HP-UX 11.11 */
824 #ifdef BTMP_FILE
825 # define _PATH_BTMP BTMP_FILE
826 #endif
827 
828 #if defined(USE_BTMP) && defined(_PATH_BTMP)
829 # define CUSTOM_FAILED_LOGIN
830 #endif
831 
834 #ifdef BROKEN_GETGROUPS
835 # define getgroups(a,b) ((a)==0 && (b)==NULL ? NGROUPS_MAX : getgroups((a),(b)))
836 #endif
837 
838 #ifndef IOV_MAX
839 # if defined(_XOPEN_IOV_MAX)
840 # define IOV_MAX _XOPEN_IOV_MAX
841 # elif defined(DEF_IOV_MAX)
842 # define IOV_MAX DEF_IOV_MAX
843 # else
844 # define IOV_MAX 16
845 # endif
846 #endif
847 
848 #ifndef EWOULDBLOCK
849 # define EWOULDBLOCK EAGAIN
850 #endif
851 
852 #ifndef INET6_ADDRSTRLEN /* for non IPv6 machines */
853 #define INET6_ADDRSTRLEN 46
854 #endif
855 
856 #ifndef SSH_IOBUFSZ
857 # define SSH_IOBUFSZ 32*1024
858 #endif
859 
860 /*
861  * We want functions in openbsd-compat, if enabled, to override system ones.
862  * We no-op out the weak symbol definition rather than remove it to reduce
863  * future sync problems. Some compilers (eg Unixware) do not allow an
864  * empty statement, so we use a bogus function declaration.
865  */
866 #define DEF_WEAK(x) void __ssh_compat_weak_##x(void)
867 
868 /*
869  * Platforms that have arc4random_uniform() and not arc4random_stir()
870  * shouldn't need the latter.
871  */
872 #if defined(HAVE_ARC4RANDOM) && defined(HAVE_ARC4RANDOM_UNIFORM) && \
873  !defined(HAVE_ARC4RANDOM_STIR)
874 # define arc4random_stir()
875 #endif
876 
877 #ifndef HAVE_VA_COPY
878 # ifdef HAVE___VA_COPY
879 # define va_copy(dest, src) __va_copy(dest, src)
880 # else
881 # define va_copy(dest, src) (dest) = (src)
882 # endif
883 #endif
884 
885 #ifndef __predict_true
886 # if defined(__GNUC__) && \
887  ((__GNUC__ > (2)) || (__GNUC__ == (2) && __GNUC_MINOR__ >= (96)))
888 # define __predict_true(exp) __builtin_expect(((exp) != 0), 1)
889 # define __predict_false(exp) __builtin_expect(((exp) != 0), 0)
890 # else
891 # define __predict_true(exp) ((exp) != 0)
892 # define __predict_false(exp) ((exp) != 0)
893 # endif /* gcc version */
894 #endif /* __predict_true */
895 
896 #if defined(HAVE_GLOB_H) && defined(GLOB_HAS_ALTDIRFUNC) && \
897  defined(GLOB_HAS_GL_MATCHC) && defined(GLOB_HAS_GL_STATV) && \
898  defined(HAVE_DECL_GLOB_NOMATCH) && HAVE_DECL_GLOB_NOMATCH != 0 && \
899  !defined(BROKEN_GLOB)
900 # define USE_SYSTEM_GLOB
901 #endif
902 
903 /*
904  * sntrup761 uses variable length arrays and c99-style declarations after code,
905  * so only enable if the compiler supports them.
906  */
907 #if defined(VARIABLE_LENGTH_ARRAYS) && defined(VARIABLE_DECLARATION_AFTER_CODE)
908 # define USE_SNTRUP761X25519 1
909 #endif
910 #endif /* _DEFINES_H */