1 /* 2 * Copyright (c) 1999-2003 Damien Miller. All rights reserved. 3 * Copyright (c) 2003 Ben Lindstrom. All rights reserved. 4 * Copyright (c) 2002 Tim Rice. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef _OPENBSD_COMPAT_H 28 #define _OPENBSD_COMPAT_H 29 30 #include "includes.h" 31 32 #include <sys/types.h> 33 #include <pwd.h> 34 35 #include <sys/socket.h> 36 37 #include <stddef.h> /* for wchar_t */ 38 39 /* OpenBSD function replacements */ 40 #include "base64.h" 41 #include "sigact.h" 42 #include "readpassphrase.h" 43 #include "vis.h" 44 #include "getrrsetbyname.h" 45 #include "sha1.h" 46 #include "sha2.h" 47 #include "rmd160.h" 48 #include "md5.h" 49 #include "blf.h" 50 51 #ifndef HAVE_BASENAME 52 char *basename(const char *path); 53 #endif 54 55 #ifndef HAVE_BINDRESVPORT_SA 56 int bindresvport_sa(int sd, struct sockaddr *sa); 57 #endif 58 59 #ifndef HAVE_CLOSEFROM 60 void closefrom(int); 61 #endif 62 63 #ifndef HAVE_GETPAGESIZE 64 int getpagesize(void); 65 #endif 66 67 #ifndef HAVE_GETCWD 68 char *getcwd(char *pt, size_t size); 69 #endif 70 71 #ifndef HAVE_REALLOCARRAY 72 void *reallocarray(void *, size_t, size_t); 73 #endif 74 75 #ifndef HAVE_RECALLOCARRAY 76 void *recallocarray(void *, size_t, size_t, size_t); 77 #endif 78 79 #if !defined(HAVE_REALPATH) || defined(BROKEN_REALPATH) 80 /* 81 * glibc's FORTIFY_SOURCE can redefine this and prevent us picking up the 82 * compat version. 83 */ 84 # ifdef BROKEN_REALPATH 85 # define realpath(x, y) _ssh_compat_realpath(x, y) 86 # endif 87 88 char *realpath(const char *path, char *resolved); 89 #endif 90 91 #ifndef HAVE_RRESVPORT_AF 92 int rresvport_af(int *alport, sa_family_t af); 93 #endif 94 95 #ifndef HAVE_STRLCPY 96 size_t strlcpy(char *dst, const char *src, size_t siz); 97 #endif 98 99 #ifndef HAVE_STRLCAT 100 size_t strlcat(char *dst, const char *src, size_t siz); 101 #endif 102 103 #ifndef HAVE_STRCASESTR 104 char *strcasestr(const char *, const char *); 105 #endif 106 107 #ifndef HAVE_SETENV 108 int setenv(register const char *name, register const char *value, int rewrite); 109 #endif 110 111 #ifndef HAVE_STRMODE 112 void strmode(int mode, char *p); 113 #endif 114 115 #ifndef HAVE_STRPTIME 116 #include <time.h> 117 char *strptime(const char *buf, const char *fmt, struct tm *tm); 118 #endif 119 120 #if !defined(HAVE_MKDTEMP) || defined(HAVE_STRICT_MKSTEMP) 121 int mkstemps(char *path, int slen); 122 int mkstemp(char *path); 123 char *mkdtemp(char *path); 124 #endif 125 126 #ifndef HAVE_DAEMON 127 int daemon(int nochdir, int noclose); 128 #endif 129 130 #ifndef HAVE_DIRNAME 131 char *dirname(const char *path); 132 #endif 133 134 #ifndef HAVE_FMT_SCALED 135 #define FMT_SCALED_STRSIZE 7 136 int fmt_scaled(long long number, char *result); 137 #endif 138 139 #ifndef HAVE_SCAN_SCALED 140 int scan_scaled(char *, long long *); 141 #endif 142 143 #if defined(BROKEN_INET_NTOA) || !defined(HAVE_INET_NTOA) 144 char *inet_ntoa(struct in_addr in); 145 #endif 146 147 #ifndef HAVE_INET_NTOP 148 const char *inet_ntop(int af, const void *src, char *dst, socklen_t size); 149 #endif 150 151 #ifndef HAVE_INET_ATON 152 int inet_aton(const char *cp, struct in_addr *addr); 153 #endif 154 155 #ifndef HAVE_STRSEP 156 char *strsep(char **stringp, const char *delim); 157 #endif 158 159 #ifndef HAVE_SETPROCTITLE 160 void setproctitle(const char *fmt, ...); 161 void compat_init_setproctitle(int argc, char *argv[]); 162 #endif 163 164 #ifndef HAVE_GETGROUPLIST 165 int getgrouplist(const char *, gid_t, gid_t *, int *); 166 #endif 167 168 #if !defined(HAVE_GETOPT) || !defined(HAVE_GETOPT_OPTRESET) 169 int BSDgetopt(int argc, char * const *argv, const char *opts); 170 #include "openbsd-compat/getopt.h" 171 #endif 172 173 #if ((defined(HAVE_DECL_READV) && HAVE_DECL_READV == 0) || \ 174 (defined(HAVE_DECL_WRITEV) && HAVE_DECL_WRITEV == 0)) 175 # include <sys/types.h> 176 # include <sys/uio.h> 177 178 # if defined(HAVE_DECL_READV) && HAVE_DECL_READV == 0 179 int readv(int, struct iovec *, int); 180 # endif 181 182 # if defined(HAVE_DECL_WRITEV) && HAVE_DECL_WRITEV == 0 183 int writev(int, struct iovec *, int); 184 # endif 185 #endif 186 187 /* Home grown routines */ 188 #include "bsd-misc.h" 189 #include "bsd-setres_id.h" 190 #include "bsd-signal.h" 191 #include "bsd-statvfs.h" 192 #include "bsd-waitpid.h" 193 #include "bsd-poll.h" 194 195 #ifndef HAVE_GETPEEREID 196 int getpeereid(int , uid_t *, gid_t *); 197 #endif 198 199 #ifdef HAVE_ARC4RANDOM 200 # ifndef HAVE_ARC4RANDOM_STIR 201 # define arc4random_stir() 202 # endif 203 #else 204 unsigned int arc4random(void); 205 void arc4random_stir(void); 206 #endif /* !HAVE_ARC4RANDOM */ 207 208 #ifndef HAVE_ARC4RANDOM_BUF 209 void arc4random_buf(void *, size_t); 210 #endif 211 212 #ifndef HAVE_ARC4RANDOM_UNIFORM 213 u_int32_t arc4random_uniform(u_int32_t); 214 #endif 215 216 #ifndef HAVE_ASPRINTF 217 int asprintf(char **, const char *, ...); 218 #endif 219 220 #ifndef HAVE_OPENPTY 221 # include <sys/ioctl.h> /* for struct winsize */ 222 int openpty(int *, int *, char *, struct termios *, struct winsize *); 223 #endif /* HAVE_OPENPTY */ 224 225 #ifndef HAVE_SNPRINTF 226 int snprintf(char *, size_t, SNPRINTF_CONST char *, ...); 227 #endif 228 229 #ifndef HAVE_STRTOLL 230 long long strtoll(const char *, char **, int); 231 #endif 232 233 #ifndef HAVE_STRTOUL 234 unsigned long strtoul(const char *, char **, int); 235 #endif 236 237 #ifndef HAVE_STRTOULL 238 unsigned long long strtoull(const char *, char **, int); 239 #endif 240 241 #ifndef HAVE_STRTONUM 242 long long strtonum(const char *, long long, long long, const char **); 243 #endif 244 245 /* multibyte character support */ 246 #ifndef HAVE_MBLEN 247 # define mblen(x, y) (1) 248 #endif 249 250 #ifndef HAVE_WCWIDTH 251 # define wcwidth(x) (((x) >= 0x20 && (x) <= 0x7e) ? 1 : -1) 252 /* force our no-op nl_langinfo and mbtowc */ 253 # undef HAVE_NL_LANGINFO 254 # undef HAVE_MBTOWC 255 # undef HAVE_LANGINFO_H 256 #endif 257 258 #ifndef HAVE_NL_LANGINFO 259 # define nl_langinfo(x) "" 260 #endif 261 262 #ifndef HAVE_MBTOWC 263 int mbtowc(wchar_t *, const char*, size_t); 264 #endif 265 266 #if !defined(HAVE_VASPRINTF) || !defined(HAVE_VSNPRINTF) 267 # include <stdarg.h> 268 #endif 269 270 /* 271 * Some platforms unconditionally undefine va_copy() so we define VA_COPY() 272 * instead. This is known to be the case on at least some configurations of 273 * AIX with the xlc compiler. 274 */ 275 #ifndef VA_COPY 276 # ifdef HAVE_VA_COPY 277 # define VA_COPY(dest, src) va_copy(dest, src) 278 # else 279 # ifdef HAVE___VA_COPY 280 # define VA_COPY(dest, src) __va_copy(dest, src) 281 # else 282 # define VA_COPY(dest, src) (dest) = (src) 283 # endif 284 # endif 285 #endif 286 287 #ifndef HAVE_VASPRINTF 288 int vasprintf(char **, const char *, va_list); 289 #endif 290 291 #ifndef HAVE_VSNPRINTF 292 int vsnprintf(char *, size_t, const char *, va_list); 293 #endif 294 295 #ifndef HAVE_USER_FROM_UID 296 char *user_from_uid(uid_t, int); 297 #endif 298 299 #ifndef HAVE_GROUP_FROM_GID 300 char *group_from_gid(gid_t, int); 301 #endif 302 303 #ifndef HAVE_TIMINGSAFE_BCMP 304 int timingsafe_bcmp(const void *, const void *, size_t); 305 #endif 306 307 #ifndef HAVE_BCRYPT_PBKDF 308 int bcrypt_pbkdf(const char *, size_t, const u_int8_t *, size_t, 309 u_int8_t *, size_t, unsigned int); 310 #endif 311 312 #ifndef HAVE_EXPLICIT_BZERO 313 void explicit_bzero(void *p, size_t n); 314 #endif 315 316 #ifndef HAVE_FREEZERO 317 void freezero(void *, size_t); 318 #endif 319 320 char *xcrypt(const char *password, const char *salt); 321 char *shadow_pw(struct passwd *pw); 322 323 /* rfc2553 socket API replacements */ 324 #include "fake-rfc2553.h" 325 326 /* Routines for a single OS platform */ 327 #include "bsd-cygwin_util.h" 328 329 #include "port-aix.h" 330 #include "port-irix.h" 331 #include "port-linux.h" 332 #include "port-solaris.h" 333 #include "port-net.h" 334 #include "port-uw.h" 335 336 /* _FORTIFY_SOURCE breaks FD_ISSET(n)/FD_SET(n) for n > FD_SETSIZE. Avoid. */ 337 #if defined(HAVE_FEATURES_H) && defined(_FORTIFY_SOURCE) 338 # include <features.h> 339 # if defined(__GNU_LIBRARY__) && defined(__GLIBC_PREREQ) 340 # if __GLIBC_PREREQ(2, 15) && (_FORTIFY_SOURCE > 0) 341 # include <sys/socket.h> /* Ensure include guard is defined */ 342 # undef FD_SET 343 # undef FD_ISSET 344 # define FD_SET(n, set) kludge_FD_SET(n, set) 345 # define FD_ISSET(n, set) kludge_FD_ISSET(n, set) 346 void kludge_FD_SET(int, fd_set *); 347 int kludge_FD_ISSET(int, fd_set *); 348 # endif /* __GLIBC_PREREQ(2, 15) && (_FORTIFY_SOURCE > 0) */ 349 # endif /* __GNU_LIBRARY__ && __GLIBC_PREREQ */ 350 #endif /* HAVE_FEATURES_H && _FORTIFY_SOURCE */ 351 352 #endif /* _OPENBSD_COMPAT_H */ 353