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      1 /* $Id: openbsd-compat.h,v 1.62 2014/09/30 23:43:08 djm Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1999-2003 Damien Miller.  All rights reserved.
      5  * Copyright (c) 2003 Ben Lindstrom. All rights reserved.
      6  * Copyright (c) 2002 Tim Rice.  All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _OPENBSD_COMPAT_H
     30 #define _OPENBSD_COMPAT_H
     31 
     32 #include "includes.h"
     33 
     34 #include <sys/types.h>
     35 #include <pwd.h>
     36 
     37 #include <sys/socket.h>
     38 
     39 /* OpenBSD function replacements */
     40 #include "base64.h"
     41 #include "sigact.h"
     42 #include "glob.h"
     43 #include "readpassphrase.h"
     44 #include "vis.h"
     45 #include "getrrsetbyname.h"
     46 #include "sha1.h"
     47 #include "sha2.h"
     48 #include "rmd160.h"
     49 #include "md5.h"
     50 #include "blf.h"
     51 
     52 #ifndef HAVE_BASENAME
     53 char *basename(const char *path);
     54 #endif
     55 
     56 #ifndef HAVE_BINDRESVPORT_SA
     57 int bindresvport_sa(int sd, struct sockaddr *sa);
     58 #endif
     59 
     60 #ifndef HAVE_CLOSEFROM
     61 void closefrom(int);
     62 #endif
     63 
     64 #ifndef HAVE_GETCWD
     65 char *getcwd(char *pt, size_t size);
     66 #endif
     67 
     68 #ifndef HAVE_REALLOCARRAY
     69 void *reallocarray(void *, size_t, size_t);
     70 #endif
     71 
     72 #if !defined(HAVE_REALPATH) || defined(BROKEN_REALPATH)
     73 /*
     74  * glibc's FORTIFY_SOURCE can redefine this and prevent us picking up the
     75  * compat version.
     76  */
     77 # ifdef BROKEN_REALPATH
     78 #  define realpath(x, y) _ssh_compat_realpath(x, y)
     79 # endif
     80 
     81 char *realpath(const char *path, char *resolved);
     82 #endif
     83 
     84 #ifndef HAVE_RRESVPORT_AF
     85 int rresvport_af(int *alport, sa_family_t af);
     86 #endif
     87 
     88 #ifndef HAVE_STRLCPY
     89 /* #include <sys/types.h> XXX Still needed? */
     90 size_t strlcpy(char *dst, const char *src, size_t siz);
     91 #endif
     92 
     93 #ifndef HAVE_STRLCAT
     94 /* #include <sys/types.h> XXX Still needed? */
     95 size_t strlcat(char *dst, const char *src, size_t siz);
     96 #endif
     97 
     98 #ifndef HAVE_SETENV
     99 int setenv(register const char *name, register const char *value, int rewrite);
    100 #endif
    101 
    102 #ifndef HAVE_STRMODE
    103 void strmode(int mode, char *p);
    104 #endif
    105 
    106 #ifndef HAVE_STRPTIME
    107 #include  <time.h>
    108 char *strptime(const char *buf, const char *fmt, struct tm *tm);
    109 #endif
    110 
    111 #if !defined(HAVE_MKDTEMP) || defined(HAVE_STRICT_MKSTEMP)
    112 int mkstemps(char *path, int slen);
    113 int mkstemp(char *path);
    114 char *mkdtemp(char *path);
    115 #endif
    116 
    117 #ifndef HAVE_DAEMON
    118 int daemon(int nochdir, int noclose);
    119 #endif
    120 
    121 #ifndef HAVE_DIRNAME
    122 char *dirname(const char *path);
    123 #endif
    124 
    125 #ifndef HAVE_FMT_SCALED
    126 #define	FMT_SCALED_STRSIZE	7
    127 int	fmt_scaled(long long number, char *result);
    128 #endif
    129 
    130 #ifndef HAVE_SCAN_SCALED
    131 int	scan_scaled(char *, long long *);
    132 #endif
    133 
    134 #if defined(BROKEN_INET_NTOA) || !defined(HAVE_INET_NTOA)
    135 char *inet_ntoa(struct in_addr in);
    136 #endif
    137 
    138 #ifndef HAVE_INET_NTOP
    139 const char *inet_ntop(int af, const void *src, char *dst, socklen_t size);
    140 #endif
    141 
    142 #ifndef HAVE_INET_ATON
    143 int inet_aton(const char *cp, struct in_addr *addr);
    144 #endif
    145 
    146 #ifndef HAVE_STRSEP
    147 char *strsep(char **stringp, const char *delim);
    148 #endif
    149 
    150 #ifndef HAVE_SETPROCTITLE
    151 void setproctitle(const char *fmt, ...);
    152 void compat_init_setproctitle(int argc, char *argv[]);
    153 #endif
    154 
    155 #ifndef HAVE_GETGROUPLIST
    156 /* #include <grp.h> XXXX Still needed ? */
    157 int getgrouplist(const char *, gid_t, gid_t *, int *);
    158 #endif
    159 
    160 #if !defined(HAVE_GETOPT) || !defined(HAVE_GETOPT_OPTRESET)
    161 int BSDgetopt(int argc, char * const *argv, const char *opts);
    162 #include "openbsd-compat/getopt.h"
    163 #endif
    164 
    165 #if defined(HAVE_DECL_WRITEV) && HAVE_DECL_WRITEV == 0
    166 # include <sys/types.h>
    167 # include <sys/uio.h>
    168 int writev(int, struct iovec *, int);
    169 #endif
    170 
    171 /* Home grown routines */
    172 #include "bsd-misc.h"
    173 #include "bsd-setres_id.h"
    174 #include "bsd-statvfs.h"
    175 #include "bsd-waitpid.h"
    176 #include "bsd-poll.h"
    177 
    178 #ifndef HAVE_GETPEEREID
    179 int getpeereid(int , uid_t *, gid_t *);
    180 #endif
    181 
    182 #ifdef HAVE_ARC4RANDOM
    183 # ifndef HAVE_ARC4RANDOM_STIR
    184 #  define arc4random_stir()
    185 # endif
    186 #else
    187 unsigned int arc4random(void);
    188 void arc4random_stir(void);
    189 #endif /* !HAVE_ARC4RANDOM */
    190 
    191 #ifndef HAVE_ARC4RANDOM_BUF
    192 void arc4random_buf(void *, size_t);
    193 #endif
    194 
    195 #ifndef HAVE_ARC4RANDOM_UNIFORM
    196 u_int32_t arc4random_uniform(u_int32_t);
    197 #endif
    198 
    199 #ifndef HAVE_ASPRINTF
    200 int asprintf(char **, const char *, ...);
    201 #endif
    202 
    203 #ifndef HAVE_OPENPTY
    204 # include <sys/ioctl.h>	/* for struct winsize */
    205 int openpty(int *, int *, char *, struct termios *, struct winsize *);
    206 #endif /* HAVE_OPENPTY */
    207 
    208 /* #include <sys/types.h> XXX needed? For size_t */
    209 
    210 #ifndef HAVE_SNPRINTF
    211 int snprintf(char *, size_t, SNPRINTF_CONST char *, ...);
    212 #endif
    213 
    214 #ifndef HAVE_STRTOLL
    215 long long strtoll(const char *, char **, int);
    216 #endif
    217 
    218 #ifndef HAVE_STRTOUL
    219 unsigned long strtoul(const char *, char **, int);
    220 #endif
    221 
    222 #ifndef HAVE_STRTOULL
    223 unsigned long long strtoull(const char *, char **, int);
    224 #endif
    225 
    226 #ifndef HAVE_STRTONUM
    227 long long strtonum(const char *, long long, long long, const char **);
    228 #endif
    229 
    230 /* multibyte character support */
    231 #ifndef HAVE_MBLEN
    232 # define mblen(x, y)	(1)
    233 #endif
    234 
    235 #if !defined(HAVE_VASPRINTF) || !defined(HAVE_VSNPRINTF)
    236 # include <stdarg.h>
    237 #endif
    238 
    239 #ifndef HAVE_VASPRINTF
    240 int vasprintf(char **, const char *, va_list);
    241 #endif
    242 
    243 #ifndef HAVE_VSNPRINTF
    244 int vsnprintf(char *, size_t, const char *, va_list);
    245 #endif
    246 
    247 #ifndef HAVE_USER_FROM_UID
    248 char *user_from_uid(uid_t, int);
    249 #endif
    250 
    251 #ifndef HAVE_GROUP_FROM_GID
    252 char *group_from_gid(gid_t, int);
    253 #endif
    254 
    255 #ifndef HAVE_TIMINGSAFE_BCMP
    256 int timingsafe_bcmp(const void *, const void *, size_t);
    257 #endif
    258 
    259 #ifndef HAVE_BCRYPT_PBKDF
    260 int	bcrypt_pbkdf(const char *, size_t, const u_int8_t *, size_t,
    261     u_int8_t *, size_t, unsigned int);
    262 #endif
    263 
    264 #ifndef HAVE_EXPLICIT_BZERO
    265 void explicit_bzero(void *p, size_t n);
    266 #endif
    267 
    268 void *xmmap(size_t size);
    269 char *xcrypt(const char *password, const char *salt);
    270 char *shadow_pw(struct passwd *pw);
    271 
    272 /* rfc2553 socket API replacements */
    273 #include "fake-rfc2553.h"
    274 
    275 /* Routines for a single OS platform */
    276 #include "bsd-cray.h"
    277 #include "bsd-cygwin_util.h"
    278 
    279 #include "port-aix.h"
    280 #include "port-irix.h"
    281 #include "port-linux.h"
    282 #include "port-solaris.h"
    283 #include "port-tun.h"
    284 #include "port-uw.h"
    285 
    286 /* _FORTIFY_SOURCE breaks FD_ISSET(n)/FD_SET(n) for n > FD_SETSIZE. Avoid. */
    287 #if defined(HAVE_FEATURES_H) && defined(_FORTIFY_SOURCE)
    288 # include <features.h>
    289 # if defined(__GNU_LIBRARY__) && defined(__GLIBC_PREREQ)
    290 #  if __GLIBC_PREREQ(2, 15) && (_FORTIFY_SOURCE > 0)
    291 #   include <sys/socket.h>  /* Ensure include guard is defined */
    292 #   undef FD_SET
    293 #   undef FD_ISSET
    294 #   define FD_SET(n, set)	kludge_FD_SET(n, set)
    295 #   define FD_ISSET(n, set)	kludge_FD_ISSET(n, set)
    296 void kludge_FD_SET(int, fd_set *);
    297 int kludge_FD_ISSET(int, fd_set *);
    298 #  endif /* __GLIBC_PREREQ(2, 15) && (_FORTIFY_SOURCE > 0) */
    299 # endif /* __GNU_LIBRARY__ && __GLIBC_PREREQ */
    300 #endif /* HAVE_FEATURES_H && _FORTIFY_SOURCE */
    301 
    302 #endif /* _OPENBSD_COMPAT_H */
    303