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 "md5.h"
48 #include "blf.h"
49 #include "fnmatch.h"
50 
51 #ifndef __THROW
52 # if defined __cplusplus
53 #  define __THROW throw()
54 # else
55 #  define __THROW
56 # endif
57 #endif
58 
59 #if defined(HAVE_LOGIN_CAP) && !defined(HAVE_LOGIN_GETPWCLASS)
60 # include <login_cap.h>
61 # define login_getpwclass(pw) login_getclass(pw->pw_class)
62 #endif
63 
64 #ifndef HAVE_BASENAME
65 char *basename(const char *path);
66 #endif
67 
68 #ifndef HAVE_BINDRESVPORT_SA
69 int bindresvport_sa(int sd, struct sockaddr *sa);
70 #endif
71 
72 #ifndef HAVE_CLOSEFROM
73 void closefrom(int);
74 #endif
75 
76 #if defined(HAVE_DECL_FTRUNCATE) && HAVE_DECL_FTRUNCATE == 0
77 int ftruncate(int filedes, off_t length);
78 #endif
79 
80 #ifndef HAVE_GETLINE
81 #include <stdio.h>
82 ssize_t getline(char **, size_t *, FILE *);
83 #endif
84 
85 #ifndef HAVE_GETPAGESIZE
86 int getpagesize(void);
87 #endif
88 
89 #ifndef HAVE_GETCWD
90 char *getcwd(char *pt, size_t size);
91 #endif
92 
93 #ifndef HAVE_KILLPG
94 int killpg(pid_t, int);
95 #endif
96 
97 #if defined(HAVE_DECL_MEMMEM) && HAVE_DECL_MEMMEM == 0
98 void *memmem(const void *, size_t, const void *, size_t);
99 #endif
100 
101 #ifndef HAVE_REALLOCARRAY
102 void *reallocarray(void *, size_t, size_t);
103 #endif
104 
105 #ifndef HAVE_RECALLOCARRAY
106 void *recallocarray(void *, size_t, size_t, size_t);
107 #endif
108 
109 #ifndef HAVE_RRESVPORT_AF
110 int rresvport_af(int *alport, sa_family_t af);
111 #endif
112 
113 #ifndef HAVE_STRLCPY
114 size_t strlcpy(char *dst, const char *src, size_t siz);
115 #endif
116 
117 #ifndef HAVE_STRLCAT
118 size_t strlcat(char *dst, const char *src, size_t siz);
119 #endif
120 
121 #ifndef HAVE_STRCASESTR
122 char *strcasestr(const char *, const char *);
123 #endif
124 
125 #ifndef HAVE_STRNLEN
126 size_t strnlen(const char *, size_t);
127 #endif
128 
129 #ifndef HAVE_STRNDUP
130 char *strndup(const char *s, size_t n);
131 #endif
132 
133 #ifndef HAVE_SETENV
134 int setenv(register const char *name, register const char *value, int rewrite);
135 #endif
136 
137 #ifndef HAVE_STRMODE
138 void strmode(int mode, char *p);
139 #endif
140 
141 #ifndef HAVE_STRPTIME
142 #include  <time.h>
143 char *strptime(const char *buf, const char *fmt, struct tm *tm);
144 #endif
145 
146 #if !defined(HAVE_MKDTEMP)
147 int mkstemps(char *path, int slen);
148 int mkstemp(char *path);
149 char *mkdtemp(char *path);
150 #endif
151 
152 #define mkstemp(x) _ssh_mkstemp(x)
153 int _ssh_mkstemp(char *);
154 
155 #ifndef HAVE_DAEMON
156 int daemon(int nochdir, int noclose);
157 #endif
158 
159 #ifndef HAVE_DIRNAME
160 char *dirname(const char *path);
161 #endif
162 
163 #ifndef HAVE_FMT_SCALED
164 #define	FMT_SCALED_STRSIZE	7
165 int	fmt_scaled(long long number, char *result);
166 #endif
167 
168 #ifndef HAVE_SCAN_SCALED
169 int	scan_scaled(char *, long long *);
170 #endif
171 
172 #if defined(BROKEN_INET_NTOA) || !defined(HAVE_INET_NTOA)
173 char *inet_ntoa(struct in_addr in);
174 #endif
175 
176 #ifndef HAVE_INET_NTOP
177 const char *inet_ntop(int af, const void *src, char *dst, socklen_t size);
178 #endif
179 
180 #ifndef HAVE_INET_ATON
181 int inet_aton(const char *cp, struct in_addr *addr);
182 #endif
183 
184 #ifndef HAVE_STRSEP
185 char *strsep(char **stringp, const char *delim);
186 #endif
187 
188 #ifndef HAVE_SETPROCTITLE
189 void setproctitle(const char *fmt, ...);
190 void compat_init_setproctitle(int argc, char *argv[]);
191 #endif
192 
193 #ifndef HAVE_GETGROUPLIST
194 int getgrouplist(const char *, gid_t, gid_t *, int *);
195 #endif
196 
197 #if !defined(HAVE_GETOPT) || !defined(HAVE_GETOPT_OPTRESET)
198 int BSDgetopt(int argc, char * const *argv, const char *opts) __THROW;
199 #include "openbsd-compat/getopt.h"
200 #endif
201 
202 #if ((defined(HAVE_DECL_READV) && HAVE_DECL_READV == 0) || \
203     (defined(HAVE_DECL_WRITEV) && HAVE_DECL_WRITEV == 0))
204 # include <sys/types.h>
205 # include <sys/uio.h>
206 
207 # if defined(HAVE_DECL_READV) && HAVE_DECL_READV == 0
208 int readv(int, struct iovec *, int);
209 # endif
210 
211 # if defined(HAVE_DECL_WRITEV) && HAVE_DECL_WRITEV == 0
212 int writev(int, struct iovec *, int);
213 # endif
214 #endif
215 
216 /* Home grown routines */
217 #include "bsd-signal.h"
218 #include "bsd-misc.h"
219 #include "bsd-setres_id.h"
220 #include "bsd-statvfs.h"
221 #include "bsd-waitpid.h"
222 #include "bsd-poll.h"
223 
224 #if defined(HAVE_DECL_GETPEEREID) && HAVE_DECL_GETPEEREID == 0
225 int getpeereid(int , uid_t *, gid_t *);
226 #endif
227 
228 #ifndef HAVE_ARC4RANDOM
229 uint32_t arc4random(void);
230 #endif /* !HAVE_ARC4RANDOM */
231 
232 #ifndef HAVE_ARC4RANDOM_BUF
233 void arc4random_buf(void *, size_t);
234 #endif
235 
236 #ifndef HAVE_ARC4RANDOM_STIR
237 # define arc4random_stir()
238 #endif
239 
240 #ifndef HAVE_ARC4RANDOM_UNIFORM
241 uint32_t arc4random_uniform(uint32_t);
242 #endif
243 
244 #ifndef HAVE_ASPRINTF
245 int asprintf(char **, const char *, ...);
246 #endif
247 
248 #ifndef HAVE_OPENPTY
249 # include <sys/ioctl.h>	/* for struct winsize */
250 int openpty(int *, int *, char *, struct termios *, struct winsize *);
251 #endif /* HAVE_OPENPTY */
252 
253 #ifndef HAVE_SNPRINTF
254 int snprintf(char *, size_t, SNPRINTF_CONST char *, ...);
255 #endif
256 
257 #ifndef HAVE_STRTOLL
258 long long strtoll(const char *, char **, int);
259 #endif
260 
261 #ifndef HAVE_STRTOUL
262 unsigned long strtoul(const char *, char **, int);
263 #endif
264 
265 #ifndef HAVE_STRTOULL
266 unsigned long long strtoull(const char *, char **, int);
267 #endif
268 
269 #ifndef HAVE_STRTONUM
270 long long strtonum(const char *, long long, long long, const char **);
271 #endif
272 
273 /* multibyte character support */
274 #ifndef HAVE_MBLEN
275 # define mblen(x, y)	(1)
276 #endif
277 
278 #ifndef HAVE_WCWIDTH
279 # define wcwidth(x)	(((x) >= 0x20 && (x) <= 0x7e) ? 1 : -1)
280 /* force our no-op nl_langinfo and mbtowc */
281 # undef HAVE_NL_LANGINFO
282 # undef HAVE_MBTOWC
283 # undef HAVE_LANGINFO_H
284 #endif
285 
286 #ifndef HAVE_NL_LANGINFO
287 # define nl_langinfo(x)	""
288 #endif
289 
290 #ifndef HAVE_MBTOWC
291 int mbtowc(wchar_t *, const char*, size_t);
292 #endif
293 
294 #if !defined(HAVE_VASPRINTF) || !defined(HAVE_VSNPRINTF)
295 # include <stdarg.h>
296 #endif
297 
298 /*
299  * Some platforms unconditionally undefine va_copy() so we define VA_COPY()
300  * instead.  This is known to be the case on at least some configurations of
301  * AIX with the xlc compiler.
302  */
303 #ifndef VA_COPY
304 # ifdef HAVE_VA_COPY
305 #  define VA_COPY(dest, src) va_copy(dest, src)
306 # else
307 #  ifdef HAVE___VA_COPY
308 #   define VA_COPY(dest, src) __va_copy(dest, src)
309 #  else
310 #   define VA_COPY(dest, src) (dest) = (src)
311 #  endif
312 # endif
313 #endif
314 
315 #ifndef HAVE_VASPRINTF
316 int vasprintf(char **, const char *, va_list);
317 #endif
318 
319 #ifndef HAVE_VSNPRINTF
320 int vsnprintf(char *, size_t, const char *, va_list);
321 #endif
322 
323 #ifndef HAVE_USER_FROM_UID
324 char *user_from_uid(uid_t, int);
325 #endif
326 
327 #ifndef HAVE_GROUP_FROM_GID
328 char *group_from_gid(gid_t, int);
329 #endif
330 
331 #ifndef HAVE_TIMINGSAFE_BCMP
332 int timingsafe_bcmp(const void *, const void *, size_t);
333 #endif
334 
335 #ifndef HAVE_BCRYPT_PBKDF
336 int	bcrypt_pbkdf(const char *, size_t, const uint8_t *, size_t,
337     uint8_t *, size_t, unsigned int);
338 #endif
339 
340 #ifndef HAVE_EXPLICIT_BZERO
341 void explicit_bzero(void *p, size_t n);
342 #endif
343 
344 #ifndef HAVE_FREEZERO
345 void freezero(void *, size_t);
346 #endif
347 
348 #ifndef HAVE_LOCALTIME_R
349 struct tm *localtime_r(const time_t *, struct tm *);
350 #endif
351 
352 #ifndef HAVE_TIMEGM
353 #include <time.h>
354 time_t timegm(struct tm *);
355 #endif
356 
357 char *xcrypt(const char *password, const char *salt);
358 char *shadow_pw(struct passwd *pw);
359 
360 /* rfc2553 socket API replacements */
361 #include "fake-rfc2553.h"
362 
363 /* Routines for a single OS platform */
364 #include "bsd-cygwin_util.h"
365 
366 #include "port-aix.h"
367 #include "port-irix.h"
368 #include "port-linux.h"
369 #include "port-solaris.h"
370 #include "port-net.h"
371 #include "port-uw.h"
372 
373 /* _FORTIFY_SOURCE breaks FD_ISSET(n)/FD_SET(n) for n > FD_SETSIZE. Avoid. */
374 #if defined(HAVE_FEATURES_H) && defined(_FORTIFY_SOURCE)
375 # include <features.h>
376 # if defined(__GNU_LIBRARY__) && defined(__GLIBC_PREREQ)
377 #  if __GLIBC_PREREQ(2, 15) && (_FORTIFY_SOURCE > 0)
378 #   include <sys/socket.h>  /* Ensure include guard is defined */
379 #   undef FD_SET
380 #   undef FD_ISSET
381 #   define FD_SET(n, set)	kludge_FD_SET(n, set)
382 #   define FD_ISSET(n, set)	kludge_FD_ISSET(n, set)
383 void kludge_FD_SET(int, fd_set *);
384 int kludge_FD_ISSET(int, fd_set *);
385 #  endif /* __GLIBC_PREREQ(2, 15) && (_FORTIFY_SOURCE > 0) */
386 # endif /* __GNU_LIBRARY__ && __GLIBC_PREREQ */
387 #endif /* HAVE_FEATURES_H && _FORTIFY_SOURCE */
388 
389 #endif /* _OPENBSD_COMPAT_H */
390