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d3e2aee414
On some platforms the native realpath doesn't work with non-existent files (this is actually specified in some versions of POSIX), however the sftp spec says its realpath with "canonicalize any given path name". On those platforms, use realpath from the compat library. In addition, when compiling with -DFORTIFY_SOURCE, glibc redefines the realpath symbol to the checked version, so redefine ours to something else so we pick up the compat version we want. bz#2428, ok djm@
303 lines
7.6 KiB
C
303 lines
7.6 KiB
C
/* $Id: openbsd-compat.h,v 1.62 2014/09/30 23:43:08 djm Exp $ */
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/*
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* Copyright (c) 1999-2003 Damien Miller. All rights reserved.
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* Copyright (c) 2003 Ben Lindstrom. All rights reserved.
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* Copyright (c) 2002 Tim Rice. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _OPENBSD_COMPAT_H
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#define _OPENBSD_COMPAT_H
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#include "includes.h"
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#include <sys/types.h>
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#include <pwd.h>
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#include <sys/socket.h>
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/* OpenBSD function replacements */
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#include "base64.h"
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#include "sigact.h"
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#include "glob.h"
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#include "readpassphrase.h"
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#include "vis.h"
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#include "getrrsetbyname.h"
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#include "sha1.h"
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#include "sha2.h"
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#include "rmd160.h"
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#include "md5.h"
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#include "blf.h"
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#ifndef HAVE_BASENAME
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char *basename(const char *path);
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#endif
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#ifndef HAVE_BINDRESVPORT_SA
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int bindresvport_sa(int sd, struct sockaddr *sa);
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#endif
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#ifndef HAVE_CLOSEFROM
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void closefrom(int);
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#endif
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#ifndef HAVE_GETCWD
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char *getcwd(char *pt, size_t size);
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#endif
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#ifndef HAVE_REALLOCARRAY
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void *reallocarray(void *, size_t, size_t);
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#endif
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#if !defined(HAVE_REALPATH) || defined(BROKEN_REALPATH)
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/*
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* glibc's FORTIFY_SOURCE can redefine this and prevent us picking up the
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* compat version.
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*/
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# ifdef BROKEN_REALPATH
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# define realpath(x, y) _ssh_compat_realpath(x, y)
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# endif
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char *realpath(const char *path, char *resolved);
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#endif
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#ifndef HAVE_RRESVPORT_AF
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int rresvport_af(int *alport, sa_family_t af);
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#endif
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#ifndef HAVE_STRLCPY
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/* #include <sys/types.h> XXX Still needed? */
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size_t strlcpy(char *dst, const char *src, size_t siz);
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#endif
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#ifndef HAVE_STRLCAT
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/* #include <sys/types.h> XXX Still needed? */
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size_t strlcat(char *dst, const char *src, size_t siz);
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#endif
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#ifndef HAVE_SETENV
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int setenv(register const char *name, register const char *value, int rewrite);
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#endif
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#ifndef HAVE_STRMODE
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void strmode(int mode, char *p);
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#endif
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#ifndef HAVE_STRPTIME
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#include <time.h>
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char *strptime(const char *buf, const char *fmt, struct tm *tm);
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#endif
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#if !defined(HAVE_MKDTEMP) || defined(HAVE_STRICT_MKSTEMP)
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int mkstemps(char *path, int slen);
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int mkstemp(char *path);
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char *mkdtemp(char *path);
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#endif
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#ifndef HAVE_DAEMON
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int daemon(int nochdir, int noclose);
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#endif
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#ifndef HAVE_DIRNAME
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char *dirname(const char *path);
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#endif
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#ifndef HAVE_FMT_SCALED
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#define FMT_SCALED_STRSIZE 7
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int fmt_scaled(long long number, char *result);
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#endif
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#ifndef HAVE_SCAN_SCALED
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int scan_scaled(char *, long long *);
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#endif
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#if defined(BROKEN_INET_NTOA) || !defined(HAVE_INET_NTOA)
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char *inet_ntoa(struct in_addr in);
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#endif
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#ifndef HAVE_INET_NTOP
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const char *inet_ntop(int af, const void *src, char *dst, socklen_t size);
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#endif
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#ifndef HAVE_INET_ATON
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int inet_aton(const char *cp, struct in_addr *addr);
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#endif
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#ifndef HAVE_STRSEP
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char *strsep(char **stringp, const char *delim);
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#endif
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#ifndef HAVE_SETPROCTITLE
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void setproctitle(const char *fmt, ...);
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void compat_init_setproctitle(int argc, char *argv[]);
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#endif
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#ifndef HAVE_GETGROUPLIST
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/* #include <grp.h> XXXX Still needed ? */
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int getgrouplist(const char *, gid_t, gid_t *, int *);
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#endif
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#if !defined(HAVE_GETOPT) || !defined(HAVE_GETOPT_OPTRESET)
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int BSDgetopt(int argc, char * const *argv, const char *opts);
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#include "openbsd-compat/getopt.h"
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#endif
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#if defined(HAVE_DECL_WRITEV) && HAVE_DECL_WRITEV == 0
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# include <sys/types.h>
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# include <sys/uio.h>
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int writev(int, struct iovec *, int);
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#endif
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/* Home grown routines */
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#include "bsd-misc.h"
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#include "bsd-setres_id.h"
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#include "bsd-statvfs.h"
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#include "bsd-waitpid.h"
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#include "bsd-poll.h"
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#ifndef HAVE_GETPEEREID
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int getpeereid(int , uid_t *, gid_t *);
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#endif
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#ifdef HAVE_ARC4RANDOM
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# ifndef HAVE_ARC4RANDOM_STIR
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# define arc4random_stir()
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# endif
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#else
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unsigned int arc4random(void);
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void arc4random_stir(void);
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#endif /* !HAVE_ARC4RANDOM */
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#ifndef HAVE_ARC4RANDOM_BUF
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void arc4random_buf(void *, size_t);
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#endif
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#ifndef HAVE_ARC4RANDOM_UNIFORM
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u_int32_t arc4random_uniform(u_int32_t);
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#endif
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#ifndef HAVE_ASPRINTF
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int asprintf(char **, const char *, ...);
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#endif
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#ifndef HAVE_OPENPTY
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# include <sys/ioctl.h> /* for struct winsize */
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int openpty(int *, int *, char *, struct termios *, struct winsize *);
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#endif /* HAVE_OPENPTY */
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/* #include <sys/types.h> XXX needed? For size_t */
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#ifndef HAVE_SNPRINTF
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int snprintf(char *, size_t, SNPRINTF_CONST char *, ...);
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#endif
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#ifndef HAVE_STRTOLL
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long long strtoll(const char *, char **, int);
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#endif
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#ifndef HAVE_STRTOUL
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unsigned long strtoul(const char *, char **, int);
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#endif
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#ifndef HAVE_STRTOULL
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unsigned long long strtoull(const char *, char **, int);
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#endif
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#ifndef HAVE_STRTONUM
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long long strtonum(const char *, long long, long long, const char **);
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#endif
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/* multibyte character support */
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#ifndef HAVE_MBLEN
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# define mblen(x, y) (1)
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#endif
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#if !defined(HAVE_VASPRINTF) || !defined(HAVE_VSNPRINTF)
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# include <stdarg.h>
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#endif
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#ifndef HAVE_VASPRINTF
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int vasprintf(char **, const char *, va_list);
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#endif
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#ifndef HAVE_VSNPRINTF
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int vsnprintf(char *, size_t, const char *, va_list);
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#endif
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#ifndef HAVE_USER_FROM_UID
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char *user_from_uid(uid_t, int);
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#endif
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#ifndef HAVE_GROUP_FROM_GID
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char *group_from_gid(gid_t, int);
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#endif
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#ifndef HAVE_TIMINGSAFE_BCMP
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int timingsafe_bcmp(const void *, const void *, size_t);
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#endif
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#ifndef HAVE_BCRYPT_PBKDF
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int bcrypt_pbkdf(const char *, size_t, const u_int8_t *, size_t,
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u_int8_t *, size_t, unsigned int);
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#endif
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#ifndef HAVE_EXPLICIT_BZERO
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void explicit_bzero(void *p, size_t n);
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#endif
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void *xmmap(size_t size);
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char *xcrypt(const char *password, const char *salt);
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char *shadow_pw(struct passwd *pw);
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/* rfc2553 socket API replacements */
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#include "fake-rfc2553.h"
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/* Routines for a single OS platform */
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#include "bsd-cray.h"
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#include "bsd-cygwin_util.h"
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#include "port-aix.h"
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#include "port-irix.h"
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#include "port-linux.h"
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#include "port-solaris.h"
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#include "port-tun.h"
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#include "port-uw.h"
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/* _FORTIFY_SOURCE breaks FD_ISSET(n)/FD_SET(n) for n > FD_SETSIZE. Avoid. */
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#if defined(HAVE_FEATURES_H) && defined(_FORTIFY_SOURCE)
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# include <features.h>
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# if defined(__GNU_LIBRARY__) && defined(__GLIBC_PREREQ)
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# if __GLIBC_PREREQ(2, 15) && (_FORTIFY_SOURCE > 0)
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# include <sys/socket.h> /* Ensure include guard is defined */
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# undef FD_SET
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# undef FD_ISSET
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# define FD_SET(n, set) kludge_FD_SET(n, set)
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# define FD_ISSET(n, set) kludge_FD_ISSET(n, set)
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void kludge_FD_SET(int, fd_set *);
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int kludge_FD_ISSET(int, fd_set *);
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# endif /* __GLIBC_PREREQ(2, 15) && (_FORTIFY_SOURCE > 0) */
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# endif /* __GNU_LIBRARY__ && __GLIBC_PREREQ */
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#endif /* HAVE_FEATURES_H && _FORTIFY_SOURCE */
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#endif /* _OPENBSD_COMPAT_H */
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