crypto/openssh/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
 100 #ifndef PATH_MAX
 101 # ifdef _POSIX_PATH_MAX
 102 # define PATH_MAX _POSIX_PATH_MAX
 103 # endif
 104 #endif
 105
 106 #ifndef MAXPATHLEN
 107 # ifdef PATH_MAX
 108 #  define MAXPATHLEN PATH_MAX
 109 # else /* PATH_MAX */
 110 #  define MAXPATHLEN 64
 111 /* realpath uses a fixed buffer of size MAXPATHLEN, so force use of ours */
 112 #  ifndef BROKEN_REALPATH
 113 #   define BROKEN_REALPATH 1
 114 #  endif /* BROKEN_REALPATH */
 115 # endif /* PATH_MAX */
 116 #endif /* MAXPATHLEN */
 117
 118 #ifndef HOST_NAME_MAX
 119 # include "netdb.h" /* for MAXHOSTNAMELEN */
 120 # if defined(_POSIX_HOST_NAME_MAX)
 121 #  define HOST_NAME_MAX _POSIX_HOST_NAME_MAX
 122 # elif defined(MAXHOSTNAMELEN)
 123 #  define HOST_NAME_MAX MAXHOSTNAMELEN
 124 # else
 125 #  define HOST_NAME_MAX 255
 126 # endif
 127 #endif /* HOST_NAME_MAX */
 128
 129 #if defined(HAVE_DECL_MAXSYMLINKS) && HAVE_DECL_MAXSYMLINKS == 0
 130 # define MAXSYMLINKS 5
 131 #endif
 132
 133 #ifndef STDIN_FILENO
 134 # define STDIN_FILENO    0
 135 #endif
 136 #ifndef STDOUT_FILENO
 137 # define STDOUT_FILENO   1
 138 #endif
 139 #ifndef STDERR_FILENO
 140 # define STDERR_FILENO   2
 141 #endif
 142
 143 #ifndef NGROUPS_MAX     /* Disable groupaccess if NGROUP_MAX is not set */
 144 #ifdef NGROUPS
 145 #define NGROUPS_MAX NGROUPS
 146 #else
 147 #define NGROUPS_MAX 0
 148 #endif
 149 #endif
 150
 151 #if defined(HAVE_DECL_O_NONBLOCK) && HAVE_DECL_O_NONBLOCK == 0
 152 # define O_NONBLOCK      00004  /* Non Blocking Open */
 153 #endif
 154
 155 #ifndef S_IFSOCK
 156 # define S_IFSOCK 0
 157 #endif /* S_IFSOCK */
 158
 159 #ifndef S_ISDIR
 160 # define S_ISDIR(mode)  (((mode) & (_S_IFMT)) == (_S_IFDIR))
 161 #endif /* S_ISDIR */
 162
 163 #ifndef S_ISREG
 164 # define S_ISREG(mode)  (((mode) & (_S_IFMT)) == (_S_IFREG))
 165 #endif /* S_ISREG */
 166
 167 #ifndef S_ISLNK
 168 # define S_ISLNK(mode)  (((mode) & S_IFMT) == S_IFLNK)
 169 #endif /* S_ISLNK */
 170
 171 #ifndef S_IXUSR
 172 # define S_IXUSR                        0000100 /* execute/search permission, */
 173 # define S_IXGRP                        0000010 /* execute/search permission, */
 174 # define S_IXOTH                        0000001 /* execute/search permission, */
 175 # define _S_IWUSR                       0000200 /* write permission, */
 176 # define S_IWUSR                        _S_IWUSR        /* write permission, owner */
 177 # define S_IWGRP                        0000020 /* write permission, group */
 178 # define S_IWOTH                        0000002 /* write permission, other */
 179 # define S_IRUSR                        0000400 /* read permission, owner */
 180 # define S_IRGRP                        0000040 /* read permission, group */
 181 # define S_IROTH                        0000004 /* read permission, other */
 182 # define S_IRWXU                        0000700 /* read, write, execute */
 183 # define S_IRWXG                        0000070 /* read, write, execute */
 184 # define S_IRWXO                        0000007 /* read, write, execute */
 185 #endif /* S_IXUSR */
 186
 187 #if !defined(MAP_ANON) && defined(MAP_ANONYMOUS)
 188 #define MAP_ANON MAP_ANONYMOUS
 189 #endif
 190
 191 #ifndef MAP_FAILED
 192 # define MAP_FAILED ((void *)-1)
 193 #endif
 194
 195 /*
 196 SCO Open Server 3 has INADDR_LOOPBACK defined in rpc/rpc.h but
 197 including rpc/rpc.h breaks Solaris 6
 198 */
 199 #ifndef INADDR_LOOPBACK
 200 #define INADDR_LOOPBACK ((u_long)0x7f000001)
 201 #endif
 202
 203 /* Types */
 204
 205 /* If sys/types.h does not supply intXX_t, supply them ourselves */
 206 /* (or die trying) */
 207
 208 #ifndef HAVE_U_INT
 209 typedef unsigned int u_int;
 210 #endif
 211
 212 #ifndef HAVE_INTXX_T
 213 typedef signed char int8_t;
 214 # if (SIZEOF_SHORT_INT == 2)
 215 typedef short int int16_t;
 216 # else
 217 #  ifdef _UNICOS
 218 #   if (SIZEOF_SHORT_INT == 4)
 219 typedef short int16_t;
 220 #   else
 221 typedef long  int16_t;
 222 #   endif
 223 #  else
 224 #   error "16 bit int type not found."
 225 #  endif /* _UNICOS */
 226 # endif
 227 # if (SIZEOF_INT == 4)
 228 typedef int int32_t;
 229 # else
 230 #  ifdef _UNICOS
 231 typedef long  int32_t;
 232 #  else
 233 #   error "32 bit int type not found."
 234 #  endif /* _UNICOS */
 235 # endif
 236 #endif
 237
 238 /* If sys/types.h does not supply u_intXX_t, supply them ourselves */
 239 #ifndef HAVE_U_INTXX_T
 240 # ifdef HAVE_UINTXX_T
 241 typedef uint8_t u_int8_t;
 242 typedef uint16_t u_int16_t;
 243 typedef uint32_t u_int32_t;
 244 # define HAVE_U_INTXX_T 1
 245 # else
 246 typedef unsigned char u_int8_t;
 247 #  if (SIZEOF_SHORT_INT == 2)
 248 typedef unsigned short int u_int16_t;
 249 #  else
 250 #   ifdef _UNICOS
 251 #    if (SIZEOF_SHORT_INT == 4)
 252 typedef unsigned short u_int16_t;
 253 #    else
 254 typedef unsigned long  u_int16_t;
 255 #    endif
 256 #   else
 257 #    error "16 bit int type not found."
 258 #   endif
 259 #  endif
 260 #  if (SIZEOF_INT == 4)
 261 typedef unsigned int u_int32_t;
 262 #  else
 263 #   ifdef _UNICOS
 264 typedef unsigned long  u_int32_t;
 265 #   else
 266 #    error "32 bit int type not found."
 267 #   endif
 268 #  endif
 269 # endif
 270 #define __BIT_TYPES_DEFINED__
 271 #endif
 272
 273 /* 64-bit types */
 274 #ifndef HAVE_INT64_T
 275 # if (SIZEOF_LONG_INT == 8)
 276 typedef long int int64_t;
 277 # else
 278 #  if (SIZEOF_LONG_LONG_INT == 8)
 279 typedef long long int int64_t;
 280 #  endif
 281 # endif
 282 #endif
 283 #ifndef HAVE_U_INT64_T
 284 # if (SIZEOF_LONG_INT == 8)
 285 typedef unsigned long int u_int64_t;
 286 # else
 287 #  if (SIZEOF_LONG_LONG_INT == 8)
 288 typedef unsigned long long int u_int64_t;
 289 #  endif
 290 # endif
 291 #endif
 292
 293 #ifndef HAVE_UINTXX_T
 294 typedef u_int8_t uint8_t;
 295 typedef u_int16_t uint16_t;
 296 typedef u_int32_t uint32_t;
 297 typedef u_int64_t uint64_t;
 298 #endif
 299
 300 #ifndef HAVE_INTMAX_T
 301 typedef long long intmax_t;
 302 #endif
 303
 304 #ifndef HAVE_UINTMAX_T
 305 typedef unsigned long long uintmax_t;
 306 #endif
 307
 308 #ifndef HAVE_U_CHAR
 309 typedef unsigned char u_char;
 310 # define HAVE_U_CHAR
 311 #endif /* HAVE_U_CHAR */
 312
 313 #ifndef ULLONG_MAX
 314 # define ULLONG_MAX ((unsigned long long)-1)
 315 #endif
 316
 317 #ifndef SIZE_T_MAX
 318 #define SIZE_T_MAX ULONG_MAX
 319 #endif /* SIZE_T_MAX */
 320
 321 #ifndef HAVE_SIZE_T
 322 typedef unsigned int size_t;
 323 # define HAVE_SIZE_T
 324 # define SIZE_T_MAX UINT_MAX
 325 #endif /* HAVE_SIZE_T */
 326
 327 #ifndef SIZE_MAX
 328 #define SIZE_MAX SIZE_T_MAX
 329 #endif
 330
 331 #ifndef INT32_MAX
 332 # if (SIZEOF_INT == 4)
 333 #  define INT32_MAX INT_MAX
 334 # elif (SIZEOF_LONG == 4)
 335 #  define INT32_MAX LONG_MAX
 336 # else
 337 #  error "need INT32_MAX"
 338 # endif
 339 #endif
 340
 341 #ifndef INT64_MAX
 342 # if (SIZEOF_INT == 8)
 343 #  define INT64_MAX INT_MAX
 344 # elif (SIZEOF_LONG == 8)
 345 #  define INT64_MAX LONG_MAX
 346 # elif (SIZEOF_LONG_LONG_INT == 8)
 347 #  define INT64_MAX LLONG_MAX
 348 # else
 349 #  error "need INT64_MAX"
 350 # endif
 351 #endif
 352
 353 #ifndef HAVE_SSIZE_T
 354 typedef int ssize_t;
 355 # define HAVE_SSIZE_T
 356 #endif /* HAVE_SSIZE_T */
 357
 358 #ifndef HAVE_CLOCK_T
 359 typedef long clock_t;
 360 # define HAVE_CLOCK_T
 361 #endif /* HAVE_CLOCK_T */
 362
 363 #ifndef HAVE_SA_FAMILY_T
 364 typedef int sa_family_t;
 365 # define HAVE_SA_FAMILY_T
 366 #endif /* HAVE_SA_FAMILY_T */
 367
 368 #ifndef HAVE_PID_T
 369 typedef int pid_t;
 370 # define HAVE_PID_T
 371 #endif /* HAVE_PID_T */
 372
 373 #ifndef HAVE_SIG_ATOMIC_T
 374 typedef int sig_atomic_t;
 375 # define HAVE_SIG_ATOMIC_T
 376 #endif /* HAVE_SIG_ATOMIC_T */
 377
 378 #ifndef HAVE_MODE_T
 379 typedef int mode_t;
 380 # define HAVE_MODE_T
 381 #endif /* HAVE_MODE_T */
 382
 383 #if !defined(HAVE_SS_FAMILY_IN_SS) && defined(HAVE___SS_FAMILY_IN_SS)
 384 # define ss_family __ss_family
 385 #endif /* !defined(HAVE_SS_FAMILY_IN_SS) && defined(HAVE_SA_FAMILY_IN_SS) */
 386
 387 #ifndef HAVE_SYS_UN_H
 388 struct  sockaddr_un {
 389         short   sun_family;             /* AF_UNIX */
 390         char    sun_path[108];          /* path name (gag) */
 391 };
 392 #endif /* HAVE_SYS_UN_H */
 393
 394 #ifndef HAVE_IN_ADDR_T
 395 typedef u_int32_t       in_addr_t;
 396 #endif
 397 #ifndef HAVE_IN_PORT_T
 398 typedef u_int16_t       in_port_t;
 399 #endif
 400
 401 #if defined(BROKEN_SYS_TERMIO_H) && !defined(_STRUCT_WINSIZE)
 402 #define _STRUCT_WINSIZE
 403 struct winsize {
 404       unsigned short ws_row;          /* rows, in characters */
 405       unsigned short ws_col;          /* columns, in character */
 406       unsigned short ws_xpixel;       /* horizontal size, pixels */
 407       unsigned short ws_ypixel;       /* vertical size, pixels */
 408 };
 409 #endif
 410
 411 /* bits needed for select that may not be in the system headers */
 412 #ifndef HAVE_FD_MASK
 413  typedef unsigned long int      fd_mask;
 414 #endif
 415
 416 #if defined(HAVE_DECL_NFDBITS) && HAVE_DECL_NFDBITS == 0
 417 # define        NFDBITS (8 * sizeof(unsigned long))
 418 #endif
 419
 420 #if defined(HAVE_DECL_HOWMANY) && HAVE_DECL_HOWMANY == 0
 421 # define howmany(x,y)   (((x)+((y)-1))/(y))
 422 #endif
 423
 424 /* Paths */
 425
 426 #ifndef _PATH_BSHELL
 427 # define _PATH_BSHELL "/bin/sh"
 428 #endif
 429
 430 #ifdef USER_PATH
 431 # ifdef _PATH_STDPATH
 432 #  undef _PATH_STDPATH
 433 # endif
 434 # define _PATH_STDPATH USER_PATH
 435 #endif
 436
 437 #ifndef _PATH_STDPATH
 438 # define _PATH_STDPATH "/usr/bin:/bin:/usr/sbin:/sbin"
 439 #endif
 440
 441 #ifndef SUPERUSER_PATH
 442 # define SUPERUSER_PATH _PATH_STDPATH
 443 #endif
 444
 445 #ifndef _PATH_DEVNULL
 446 # define _PATH_DEVNULL "/dev/null"
 447 #endif
 448
 449 /* user may have set a different path */
 450 #if defined(_PATH_MAILDIR) && defined(MAIL_DIRECTORY)
 451 # undef _PATH_MAILDIR
 452 #endif /* defined(_PATH_MAILDIR) && defined(MAIL_DIRECTORY) */
 453
 454 #ifdef MAIL_DIRECTORY
 455 # define _PATH_MAILDIR MAIL_DIRECTORY
 456 #endif
 457
 458 #ifndef _PATH_NOLOGIN
 459 # define _PATH_NOLOGIN "/etc/nologin"
 460 #endif
 461
 462 /* Define this to be the path of the xauth program. */
 463 #ifdef XAUTH_PATH
 464 #define _PATH_XAUTH XAUTH_PATH
 465 #endif /* XAUTH_PATH */
 466
 467 /* derived from XF4/xc/lib/dps/Xlibnet.h */
 468 #ifndef X_UNIX_PATH
 469 #  ifdef __hpux
 470 #    define X_UNIX_PATH "/var/spool/sockets/X11/%u"
 471 #  else
 472 #    define X_UNIX_PATH "/tmp/.X11-unix/X%u"
 473 #  endif
 474 #endif /* X_UNIX_PATH */
 475 #define _PATH_UNIX_X X_UNIX_PATH
 476
 477 #ifndef _PATH_TTY
 478 # define _PATH_TTY "/dev/tty"
 479 #endif
 480
 481 /* Macros */
 482
 483 #if defined(HAVE_LOGIN_GETCAPBOOL) && defined(HAVE_LOGIN_CAP_H)
 484 # define HAVE_LOGIN_CAP
 485 #endif
 486
 487 #ifndef MAX
 488 # define MAX(a,b) (((a)>(b))?(a):(b))
 489 # define MIN(a,b) (((a)<(b))?(a):(b))
 490 #endif
 491
 492 #ifndef roundup
 493 # define roundup(x, y)   ((((x)+((y)-1))/(y))*(y))
 494 #endif
 495
 496 #ifndef timersub
 497 #define timersub(a, b, result)                                  \
 498    do {                                                         \
 499       (result)->tv_sec = (a)->tv_sec - (b)->tv_sec;             \
 500       (result)->tv_usec = (a)->tv_usec - (b)->tv_usec;          \
 501       if ((result)->tv_usec < 0) {                              \
 502          --(result)->tv_sec;                                    \
 503          (result)->tv_usec += 1000000;                          \
 504       }                                                         \
 505    } while (0)
 506 #endif
 507
 508 #ifndef TIMEVAL_TO_TIMESPEC
 509 #define TIMEVAL_TO_TIMESPEC(tv, ts) {                                   \
 510         (ts)->tv_sec = (tv)->tv_sec;                                    \
 511         (ts)->tv_nsec = (tv)->tv_usec * 1000;                           \
 512 }
 513 #endif
 514
 515 #ifndef TIMESPEC_TO_TIMEVAL
 516 #define TIMESPEC_TO_TIMEVAL(tv, ts) {                                   \
 517         (tv)->tv_sec = (ts)->tv_sec;                                    \
 518         (tv)->tv_usec = (ts)->tv_nsec / 1000;                           \
 519 }
 520 #endif
 521
 522 #ifndef timespeccmp
 523 #define timespeccmp(tsp, usp, cmp)                                      \
 524         (((tsp)->tv_sec == (usp)->tv_sec) ?                             \
 525             ((tsp)->tv_nsec cmp (usp)->tv_nsec) :                       \
 526             ((tsp)->tv_sec cmp (usp)->tv_sec))
 527 #endif
 528
 529 #ifndef __P
 530 # define __P(x) x
 531 #endif
 532
 533 #if !defined(IN6_IS_ADDR_V4MAPPED)
 534 # define IN6_IS_ADDR_V4MAPPED(a) \
 535         ((((u_int32_t *) (a))[0] == 0) && (((u_int32_t *) (a))[1] == 0) && \
 536          (((u_int32_t *) (a))[2] == htonl (0xffff)))
 537 #endif /* !defined(IN6_IS_ADDR_V4MAPPED) */
 538
 539 #if !defined(__GNUC__) || (__GNUC__ < 2)
 540 # define __attribute__(x)
 541 #endif /* !defined(__GNUC__) || (__GNUC__ < 2) */
 542
 543 #if !defined(HAVE_ATTRIBUTE__SENTINEL__) && !defined(__sentinel__)
 544 # define __sentinel__
 545 #endif
 546
 547 #if !defined(HAVE_ATTRIBUTE__BOUNDED__) && !defined(__bounded__)
 548 # define __bounded__(x, y, z)
 549 #endif
 550
 551 #if !defined(HAVE_ATTRIBUTE__NONNULL__) && !defined(__nonnull__)
 552 # define __nonnull__(x)
 553 #endif
 554
 555 #ifndef OSSH_ALIGNBYTES
 556 #define OSSH_ALIGNBYTES (sizeof(int) - 1)
 557 #endif
 558 #ifndef __CMSG_ALIGN
 559 #define __CMSG_ALIGN(p) (((u_int)(p) + OSSH_ALIGNBYTES) &~ OSSH_ALIGNBYTES)
 560 #endif
 561
 562 /* Length of the contents of a control message of length len */
 563 #ifndef CMSG_LEN
 564 #define CMSG_LEN(len)   (__CMSG_ALIGN(sizeof(struct cmsghdr)) + (len))
 565 #endif
 566
 567 /* Length of the space taken up by a padded control message of length len */
 568 #ifndef CMSG_SPACE
 569 #define CMSG_SPACE(len) (__CMSG_ALIGN(sizeof(struct cmsghdr)) + __CMSG_ALIGN(len))
 570 #endif
 571
 572 /* given pointer to struct cmsghdr, return pointer to data */
 573 #ifndef CMSG_DATA
 574 #define CMSG_DATA(cmsg) ((u_char *)(cmsg) + __CMSG_ALIGN(sizeof(struct cmsghdr)))
 575 #endif /* CMSG_DATA */
 576
 577 /*
 578  * RFC 2292 requires to check msg_controllen, in case that the kernel returns
 579  * an empty list for some reasons.
 580  */
 581 #ifndef CMSG_FIRSTHDR
 582 #define CMSG_FIRSTHDR(mhdr) \
 583         ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \
 584          (struct cmsghdr *)(mhdr)->msg_control : \
 585          (struct cmsghdr *)NULL)
 586 #endif /* CMSG_FIRSTHDR */
 587
 588 #if defined(HAVE_DECL_OFFSETOF) && HAVE_DECL_OFFSETOF == 0
 589 # define offsetof(type, member) ((size_t) &((type *)0)->member)
 590 #endif
 591
 592 /* Set up BSD-style BYTE_ORDER definition if it isn't there already */
 593 /* XXX: doesn't try to cope with strange byte orders (PDP_ENDIAN) */
 594 #ifndef BYTE_ORDER
 595 # ifndef LITTLE_ENDIAN
 596 #  define LITTLE_ENDIAN  1234
 597 # endif /* LITTLE_ENDIAN */
 598 # ifndef BIG_ENDIAN
 599 #  define BIG_ENDIAN     4321
 600 # endif /* BIG_ENDIAN */
 601 # ifdef WORDS_BIGENDIAN
 602 #  define BYTE_ORDER BIG_ENDIAN
 603 # else /* WORDS_BIGENDIAN */
 604 #  define BYTE_ORDER LITTLE_ENDIAN
 605 # endif /* WORDS_BIGENDIAN */
 606 #endif /* BYTE_ORDER */
 607
 608 /* Function replacement / compatibility hacks */
 609
 610 #if !defined(HAVE_GETADDRINFO) && (defined(HAVE_OGETADDRINFO) || defined(HAVE_NGETADDRINFO))
 611 # define HAVE_GETADDRINFO
 612 #endif
 613
 614 #ifndef HAVE_GETOPT_OPTRESET
 615 # undef getopt
 616 # undef opterr
 617 # undef optind
 618 # undef optopt
 619 # undef optreset
 620 # undef optarg
 621 # define getopt(ac, av, o)  BSDgetopt(ac, av, o)
 622 # define opterr             BSDopterr
 623 # define optind             BSDoptind
 624 # define optopt             BSDoptopt
 625 # define optreset           BSDoptreset
 626 # define optarg             BSDoptarg
 627 #endif
 628
 629 #if defined(BROKEN_GETADDRINFO) && defined(HAVE_GETADDRINFO)
 630 # undef HAVE_GETADDRINFO
 631 #endif
 632 #if defined(BROKEN_GETADDRINFO) && defined(HAVE_FREEADDRINFO)
 633 # undef HAVE_FREEADDRINFO
 634 #endif
 635 #if defined(BROKEN_GETADDRINFO) && defined(HAVE_GAI_STRERROR)
 636 # undef HAVE_GAI_STRERROR
 637 #endif
 638
 639 #if defined(HAVE_GETADDRINFO)
 640 # if defined(HAVE_DECL_AI_NUMERICSERV) && HAVE_DECL_AI_NUMERICSERV == 0
 641 #   define AI_NUMERICSERV       0
 642 # endif
 643 #endif
 644
 645 #if defined(BROKEN_UPDWTMPX) && defined(HAVE_UPDWTMPX)
 646 # undef HAVE_UPDWTMPX
 647 #endif
 648
 649 #if defined(BROKEN_SHADOW_EXPIRE) && defined(HAS_SHADOW_EXPIRE)
 650 # undef HAS_SHADOW_EXPIRE
 651 #endif
 652
 653 #if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT) && \
 654     defined(SYSLOG_R_SAFE_IN_SIGHAND)
 655 # define DO_LOG_SAFE_IN_SIGHAND
 656 #endif
 657
 658 #if !defined(HAVE_MEMMOVE) && defined(HAVE_BCOPY)
 659 # define memmove(s1, s2, n) bcopy((s2), (s1), (n))
 660 #endif /* !defined(HAVE_MEMMOVE) && defined(HAVE_BCOPY) */
 661
 662 #ifndef GETPGRP_VOID
 663 # include <unistd.h>
 664 # define getpgrp() getpgrp(0)
 665 #endif
 666
 667 #ifdef USE_BSM_AUDIT
 668 # define SSH_AUDIT_EVENTS
 669 # define CUSTOM_SSH_AUDIT_EVENTS
 670 #endif
 671
 672 #ifdef USE_LINUX_AUDIT
 673 # define SSH_AUDIT_EVENTS
 674 # define CUSTOM_SSH_AUDIT_EVENTS
 675 #endif
 676
 677 #if !defined(HAVE___func__) && defined(HAVE___FUNCTION__)
 678 #  define __func__ __FUNCTION__
 679 #elif !defined(HAVE___func__)
 680 #  define __func__ ""
 681 #endif
 682
 683 #if defined(KRB5) && !defined(HEIMDAL)
 684 #  define krb5_get_err_text(context,code) error_message(code)
 685 #endif
 686
 687 #if defined(SKEYCHALLENGE_4ARG)
 688 # define _compat_skeychallenge(a,b,c,d) skeychallenge(a,b,c,d)
 689 #else
 690 # define _compat_skeychallenge(a,b,c,d) skeychallenge(a,b,c)
 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
 740 /**
 741  ** login recorder definitions
 742  **/
 743
 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
 832 /** end of login recorder definitions */
 833
 834 #ifdef BROKEN_GETGROUPS
 835 # define getgroups(a,b) ((a)==0 && (b)==NULL ? NGROUPS_MAX : getgroups((a),(b)))
 836 #endif
 837
 838 #if defined(HAVE_MMAP) && defined(BROKEN_MMAP)
 839 # undef HAVE_MMAP
 840 #endif
 841
 842 #ifndef IOV_MAX
 843 # if defined(_XOPEN_IOV_MAX)
 844 #  define       IOV_MAX         _XOPEN_IOV_MAX
 845 # elif defined(DEF_IOV_MAX)
 846 #  define       IOV_MAX         DEF_IOV_MAX
 847 # else
 848 #  define       IOV_MAX         16
 849 # endif
 850 #endif
 851
 852 #ifndef EWOULDBLOCK
 853 # define EWOULDBLOCK EAGAIN
 854 #endif
 855
 856 #ifndef INET6_ADDRSTRLEN        /* for non IPv6 machines */
 857 #define INET6_ADDRSTRLEN 46
 858 #endif
 859
 860 #ifndef SSH_IOBUFSZ
 861 # define SSH_IOBUFSZ 8192
 862 #endif
 863
 864 /*
 865  * We want functions in openbsd-compat, if enabled, to override system ones.
 866  * We no-op out the weak symbol definition rather than remove it to reduce
 867  * future sync problems.
 868  */
 869 #define DEF_WEAK(x)
 870
 871 /*
 872  * Platforms that have arc4random_uniform() and not arc4random_stir()
 873  * shouldn't need the latter.
 874  */
 875 #if defined(HAVE_ARC4RANDOM) && defined(HAVE_ARC4RANDOM_UNIFORM) && \
 876     !defined(HAVE_ARC4RANDOM_STIR)
 877 # define arc4random_stir()
 878 #endif
 879
 880 #ifndef HAVE_VA_COPY
 881 # ifdef HAVE___VA_COPY
 882 #  define va_copy(dest, src) __va_copy(dest, src)
 883 # else
 884 #  define va_copy(dest, src) (dest) = (src)
 885 # endif
 886 #endif
 887
 888 #ifndef __predict_true
 889 # if defined(__GNUC__) && \
 890      ((__GNUC__ > (2)) || (__GNUC__ == (2) && __GNUC_MINOR__ >= (96)))
 891 #  define __predict_true(exp)     __builtin_expect(((exp) != 0), 1)
 892 #  define __predict_false(exp)    __builtin_expect(((exp) != 0), 0)
 893 # else
 894 #  define __predict_true(exp)     ((exp) != 0)
 895 #  define __predict_false(exp)    ((exp) != 0)
 896 # endif /* gcc version */
 897 #endif /* __predict_true */
 898
 899 #if defined(HAVE_GLOB_H) && defined(GLOB_HAS_ALTDIRFUNC) && \
 900     defined(GLOB_HAS_GL_MATCHC) && defined(GLOB_HAS_GL_STATV) && \
 901     defined(HAVE_DECL_GLOB_NOMATCH) &&  HAVE_DECL_GLOB_NOMATCH != 0 && \
 902     !defined(BROKEN_GLOB)
 903 # define USE_SYSTEM_GLOB
 904 #endif
 905
 906 #endif /* _DEFINES_H */