openssh/openbsd-compat/openbsd-compat.h
Darren Tucker afffd31036 Check if memmem is declared in system headers.
If the system (or one of the dependencies) implements memmem but does
not define the header, we would not declare it either resulting in
compiler warnings.  Check for declaration explicitly.  bz#3102.
2019-12-11 13:22:06 +11:00

363 lines
8.8 KiB
C

/*
* Copyright (c) 1999-2003 Damien Miller. All rights reserved.
* Copyright (c) 2003 Ben Lindstrom. All rights reserved.
* Copyright (c) 2002 Tim Rice. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _OPENBSD_COMPAT_H
#define _OPENBSD_COMPAT_H
#include "includes.h"
#include <sys/types.h>
#include <pwd.h>
#include <sys/socket.h>
#include <stddef.h> /* for wchar_t */
/* OpenBSD function replacements */
#include "base64.h"
#include "sigact.h"
#include "readpassphrase.h"
#include "vis.h"
#include "getrrsetbyname.h"
#include "sha1.h"
#include "sha2.h"
#include "rmd160.h"
#include "md5.h"
#include "blf.h"
#include "fnmatch.h"
#ifndef HAVE_BASENAME
char *basename(const char *path);
#endif
#ifndef HAVE_BINDRESVPORT_SA
int bindresvport_sa(int sd, struct sockaddr *sa);
#endif
#ifndef HAVE_CLOSEFROM
void closefrom(int);
#endif
#ifndef HAVE_GETLINE
#include <stdio.h>
ssize_t getline(char **, size_t *, FILE *);
#endif
#ifndef HAVE_GETPAGESIZE
int getpagesize(void);
#endif
#ifndef HAVE_GETCWD
char *getcwd(char *pt, size_t size);
#endif
#if defined(HAVE_DECL_MEMMEM) && HAVE_DECL_MEMMEM == 0
void *memmem(const void *, size_t, const void *, size_t);
#endif
#ifndef HAVE_REALLOCARRAY
void *reallocarray(void *, size_t, size_t);
#endif
#ifndef HAVE_RECALLOCARRAY
void *recallocarray(void *, size_t, size_t, size_t);
#endif
#ifndef HAVE_RRESVPORT_AF
int rresvport_af(int *alport, sa_family_t af);
#endif
#ifndef HAVE_STRLCPY
size_t strlcpy(char *dst, const char *src, size_t siz);
#endif
#ifndef HAVE_STRLCAT
size_t strlcat(char *dst, const char *src, size_t siz);
#endif
#ifndef HAVE_STRCASESTR
char *strcasestr(const char *, const char *);
#endif
#ifndef HAVE_STRNLEN
size_t strnlen(const char *, size_t);
#endif
#ifndef HAVE_STRNDUP
char *strndup(const char *s, size_t n);
#endif
#ifndef HAVE_SETENV
int setenv(register const char *name, register const char *value, int rewrite);
#endif
#ifndef HAVE_STRMODE
void strmode(int mode, char *p);
#endif
#ifndef HAVE_STRPTIME
#include <time.h>
char *strptime(const char *buf, const char *fmt, struct tm *tm);
#endif
#if !defined(HAVE_MKDTEMP) || defined(HAVE_STRICT_MKSTEMP)
int mkstemps(char *path, int slen);
int mkstemp(char *path);
char *mkdtemp(char *path);
#endif
#ifndef HAVE_DAEMON
int daemon(int nochdir, int noclose);
#endif
#ifndef HAVE_DIRNAME
char *dirname(const char *path);
#endif
#ifndef HAVE_FMT_SCALED
#define FMT_SCALED_STRSIZE 7
int fmt_scaled(long long number, char *result);
#endif
#ifndef HAVE_SCAN_SCALED
int scan_scaled(char *, long long *);
#endif
#if defined(BROKEN_INET_NTOA) || !defined(HAVE_INET_NTOA)
char *inet_ntoa(struct in_addr in);
#endif
#ifndef HAVE_INET_NTOP
const char *inet_ntop(int af, const void *src, char *dst, socklen_t size);
#endif
#ifndef HAVE_INET_ATON
int inet_aton(const char *cp, struct in_addr *addr);
#endif
#ifndef HAVE_STRSEP
char *strsep(char **stringp, const char *delim);
#endif
#ifndef HAVE_SETPROCTITLE
void setproctitle(const char *fmt, ...);
void compat_init_setproctitle(int argc, char *argv[]);
#endif
#ifndef HAVE_GETGROUPLIST
int getgrouplist(const char *, gid_t, gid_t *, int *);
#endif
#if !defined(HAVE_GETOPT) || !defined(HAVE_GETOPT_OPTRESET)
int BSDgetopt(int argc, char * const *argv, const char *opts);
#include "openbsd-compat/getopt.h"
#endif
#if ((defined(HAVE_DECL_READV) && HAVE_DECL_READV == 0) || \
(defined(HAVE_DECL_WRITEV) && HAVE_DECL_WRITEV == 0))
# include <sys/types.h>
# include <sys/uio.h>
# if defined(HAVE_DECL_READV) && HAVE_DECL_READV == 0
int readv(int, struct iovec *, int);
# endif
# if defined(HAVE_DECL_WRITEV) && HAVE_DECL_WRITEV == 0
int writev(int, struct iovec *, int);
# endif
#endif
/* Home grown routines */
#include "bsd-misc.h"
#include "bsd-setres_id.h"
#include "bsd-signal.h"
#include "bsd-statvfs.h"
#include "bsd-waitpid.h"
#include "bsd-poll.h"
#ifndef HAVE_GETPEEREID
int getpeereid(int , uid_t *, gid_t *);
#endif
#ifdef HAVE_ARC4RANDOM
# ifndef HAVE_ARC4RANDOM_STIR
# define arc4random_stir()
# endif
#else
unsigned int arc4random(void);
void arc4random_stir(void);
#endif /* !HAVE_ARC4RANDOM */
#ifndef HAVE_ARC4RANDOM_BUF
void arc4random_buf(void *, size_t);
#endif
#ifndef HAVE_ARC4RANDOM_UNIFORM
u_int32_t arc4random_uniform(u_int32_t);
#endif
#ifndef HAVE_ASPRINTF
int asprintf(char **, const char *, ...);
#endif
#ifndef HAVE_OPENPTY
# include <sys/ioctl.h> /* for struct winsize */
int openpty(int *, int *, char *, struct termios *, struct winsize *);
#endif /* HAVE_OPENPTY */
#ifndef HAVE_SNPRINTF
int snprintf(char *, size_t, SNPRINTF_CONST char *, ...);
#endif
#ifndef HAVE_STRTOLL
long long strtoll(const char *, char **, int);
#endif
#ifndef HAVE_STRTOUL
unsigned long strtoul(const char *, char **, int);
#endif
#ifndef HAVE_STRTOULL
unsigned long long strtoull(const char *, char **, int);
#endif
#ifndef HAVE_STRTONUM
long long strtonum(const char *, long long, long long, const char **);
#endif
/* multibyte character support */
#ifndef HAVE_MBLEN
# define mblen(x, y) (1)
#endif
#ifndef HAVE_WCWIDTH
# define wcwidth(x) (((x) >= 0x20 && (x) <= 0x7e) ? 1 : -1)
/* force our no-op nl_langinfo and mbtowc */
# undef HAVE_NL_LANGINFO
# undef HAVE_MBTOWC
# undef HAVE_LANGINFO_H
#endif
#ifndef HAVE_NL_LANGINFO
# define nl_langinfo(x) ""
#endif
#ifndef HAVE_MBTOWC
int mbtowc(wchar_t *, const char*, size_t);
#endif
#if !defined(HAVE_VASPRINTF) || !defined(HAVE_VSNPRINTF)
# include <stdarg.h>
#endif
/*
* Some platforms unconditionally undefine va_copy() so we define VA_COPY()
* instead. This is known to be the case on at least some configurations of
* AIX with the xlc compiler.
*/
#ifndef VA_COPY
# ifdef HAVE_VA_COPY
# define VA_COPY(dest, src) va_copy(dest, src)
# else
# ifdef HAVE___VA_COPY
# define VA_COPY(dest, src) __va_copy(dest, src)
# else
# define VA_COPY(dest, src) (dest) = (src)
# endif
# endif
#endif
#ifndef HAVE_VASPRINTF
int vasprintf(char **, const char *, va_list);
#endif
#ifndef HAVE_VSNPRINTF
int vsnprintf(char *, size_t, const char *, va_list);
#endif
#ifndef HAVE_USER_FROM_UID
char *user_from_uid(uid_t, int);
#endif
#ifndef HAVE_GROUP_FROM_GID
char *group_from_gid(gid_t, int);
#endif
#ifndef HAVE_TIMINGSAFE_BCMP
int timingsafe_bcmp(const void *, const void *, size_t);
#endif
#ifndef HAVE_BCRYPT_PBKDF
int bcrypt_pbkdf(const char *, size_t, const u_int8_t *, size_t,
u_int8_t *, size_t, unsigned int);
#endif
#ifndef HAVE_EXPLICIT_BZERO
void explicit_bzero(void *p, size_t n);
#endif
#ifndef HAVE_FREEZERO
void freezero(void *, size_t);
#endif
#ifndef HAVE_LOCALTIME_R
struct tm *localtime_r(const time_t *, struct tm *);
#endif
char *xcrypt(const char *password, const char *salt);
char *shadow_pw(struct passwd *pw);
/* rfc2553 socket API replacements */
#include "fake-rfc2553.h"
/* Routines for a single OS platform */
#include "bsd-cygwin_util.h"
#include "port-aix.h"
#include "port-irix.h"
#include "port-linux.h"
#include "port-solaris.h"
#include "port-net.h"
#include "port-uw.h"
/* _FORTIFY_SOURCE breaks FD_ISSET(n)/FD_SET(n) for n > FD_SETSIZE. Avoid. */
#if defined(HAVE_FEATURES_H) && defined(_FORTIFY_SOURCE)
# include <features.h>
# if defined(__GNU_LIBRARY__) && defined(__GLIBC_PREREQ)
# if __GLIBC_PREREQ(2, 15) && (_FORTIFY_SOURCE > 0)
# include <sys/socket.h> /* Ensure include guard is defined */
# undef FD_SET
# undef FD_ISSET
# define FD_SET(n, set) kludge_FD_SET(n, set)
# define FD_ISSET(n, set) kludge_FD_ISSET(n, set)
void kludge_FD_SET(int, fd_set *);
int kludge_FD_ISSET(int, fd_set *);
# endif /* __GLIBC_PREREQ(2, 15) && (_FORTIFY_SOURCE > 0) */
# endif /* __GNU_LIBRARY__ && __GLIBC_PREREQ */
#endif /* HAVE_FEATURES_H && _FORTIFY_SOURCE */
#endif /* _OPENBSD_COMPAT_H */