/*
* Copyright (c) 1996, 1998-2005, 2008, 2009-2014
* Todd C. Miller <Todd.Miller@courtesan.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Sponsored in part by the Defense Advanced Research Projects
* Agency (DARPA) and Air Force Research Laboratory, Air Force
* Materiel Command, USAF, under agreement number F39502-99-1-0512.
*/
#ifndef _SUDO_MISSING_H
#define _SUDO_MISSING_H
#include <stdio.h>
#ifdef STDC_HEADERS
# include <stddef.h>
#endif
#include <stdarg.h>
/*
* Macros and functions that may be missing on some operating systems.
*/
#ifndef __GNUC_PREREQ__
# ifdef __GNUC__
# define __GNUC_PREREQ__(ma, mi) \
((__GNUC__ > (ma)) || (__GNUC__ == (ma) && __GNUC_MINOR__ >= (mi)))
# else
# define __GNUC_PREREQ__(ma, mi) 0
# endif
#endif
/* Define away __attribute__ for non-gcc or old gcc */
#if !defined(__attribute__) && !__GNUC_PREREQ__(2, 5)
# define __attribute__(x)
#endif
/* For catching format string mismatches */
#ifndef __printflike
# if __GNUC_PREREQ__(3, 3)
# define __printflike(f, v) __attribute__((__format__ (__printf__, f, v))) __attribute__((__nonnull__ (f)))
# elif __GNUC_PREREQ__(2, 7)
# define __printflike(f, v) __attribute__((__format__ (__printf__, f, v)))
# else
# define __printflike(f, v)
# endif
#endif
#ifndef __printf0like
# if __GNUC_PREREQ__(2, 7)
# define __printf0like(f, v) __attribute__((__format__ (__printf__, f, v)))
# else
# define __printf0like(f, v)
# endif
#endif
#ifndef __format_arg
# if __GNUC_PREREQ__(2, 7)
# define __format_arg(f) __attribute__((__format_arg__ (f)))
# else
# define __format_arg(f)
# endif
#endif
/* Hint to compiler that returned pointer is unique (malloc but not realloc). */
#ifndef __malloc_like
# if __GNUC_PREREQ__(2, 96)
# define __malloc_like __attribute__((__malloc__))
# else
# define __malloc_like
# endif
#endif
/*
* Given the pointer x to the member m of the struct s, return
* a pointer to the containing structure.
*/
#ifndef __containerof
# define __containerof(x, s, m) ((s *)((char *)(x) - offsetof(s, m)))
#endif
#ifndef __dso_public
# ifdef HAVE_DSO_VISIBILITY
# if defined(__GNUC__)
# define __dso_public __attribute__((__visibility__("default")))
# define __dso_hidden __attribute__((__visibility__("hidden")))
# elif defined(__SUNPRO_C)
# define __dso_public __global
# define __dso_hidden __hidden
# else
# define __dso_public __declspec(dllexport)
# define __dso_hidden
# endif
# else
# define __dso_public
# define __dso_hidden
# endif
#endif
/*
* Pre-C99 compilers may lack a va_copy macro.
*/
#ifndef va_copy
# ifdef __va_copy
# define va_copy(d, s) __va_copy(d, s)
# else
# define va_copy(d, s) memcpy(&(d), &(s), sizeof(d));
# endif
#endif
/*
* Some systems lack full limit definitions.
*/
#ifndef OPEN_MAX
# define OPEN_MAX 256
#endif
#ifndef LLONG_MAX
# if defined(QUAD_MAX)
# define LLONG_MAX QUAD_MAX
# else
# define LLONG_MAX 0x7fffffffffffffffLL
# endif
#endif
#ifndef LLONG_MIN
# if defined(QUAD_MIN)
# define LLONG_MIN QUAD_MIN
# else
# define LLONG_MIN (-0x7fffffffffffffffLL-1)
# endif
#endif
#ifndef ULLONG_MAX
# if defined(UQUAD_MAX)
# define ULLONG_MAX UQUAD_MAX
# else
# define ULLONG_MAX 0xffffffffffffffffULL
# endif
#endif
#ifndef PATH_MAX
# ifdef _POSIX_PATH_MAX
# define PATH_MAX _POSIX_PATH_MAX
# else
# define PATH_MAX 256
# endif
#endif
#ifndef HOST_NAME_MAX
# ifdef _POSIX_HOST_NAME_MAX
# define HOST_NAME_MAX _POSIX_HOST_NAME_MAX
# else
# define HOST_NAME_MAX 255
# endif
#endif
/*
* Posix versions for those without...
*/
#ifndef _S_IFMT
# define _S_IFMT S_IFMT
#endif /* _S_IFMT */
#ifndef _S_IFREG
# define _S_IFREG S_IFREG
#endif /* _S_IFREG */
#ifndef _S_IFDIR
# define _S_IFDIR S_IFDIR
#endif /* _S_IFDIR */
#ifndef _S_IFLNK
# define _S_IFLNK S_IFLNK
#endif /* _S_IFLNK */
#ifndef S_ISREG
# define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
#endif /* S_ISREG */
#ifndef S_ISDIR
# define S_ISDIR(m) (((m) & _S_IFMT) == _S_IFDIR)
#endif /* S_ISDIR */
/*
* Some OS's may not have this.
*/
#ifndef S_IRWXU
# define S_IRWXU 0000700 /* rwx for owner */
#endif /* S_IRWXU */
/*
* These should be defined in <unistd.h> but not everyone has them.
*/
#ifndef STDIN_FILENO
# define STDIN_FILENO 0
#endif
#ifndef STDOUT_FILENO
# define STDOUT_FILENO 1
#endif
#ifndef STDERR_FILENO
# define STDERR_FILENO 2
#endif
/*
* BSD defines these in <sys/param.h> but we don't include that anymore.
*/
#ifndef MIN
# define MIN(a,b) (((a)<(b))?(a):(b))
#endif
#ifndef MAX
# define MAX(a,b) (((a)>(b))?(a):(b))
#endif
/* Macros to set/clear/test flags. */
#undef SET
#define SET(t, f) ((t) |= (f))
#undef CLR
#define CLR(t, f) ((t) &= ~(f))
#undef ISSET
#define ISSET(t, f) ((t) & (f))
/*
* Older systems may be missing stddef.h and/or offsetof macro
*/
#ifndef offsetof
# ifdef __offsetof
# define offsetof(type, field) __offsetof(type, field)
# else
# define offsetof(type, field) ((size_t)(&((type *)0)->field))
# endif
#endif
/*
* Simple isblank() macro and function for systems without it.
*/
#ifndef HAVE_ISBLANK
int isblank(int);
# define isblank(_x) ((_x) == ' ' || (_x) == '\t')
#endif
/*
* NCR's SVr4 has _innetgr(3) instead of innetgr(3) for some reason.
*/
#ifdef HAVE__INNETGR
# define innetgr(n, h, u, d) (_innetgr(n, h, u, d))
# define HAVE_INNETGR 1
#endif /* HAVE__INNETGR */
/*
* On POSIX systems, O_NOCTTY is the default so some OS's may lack this define.
*/
#ifndef O_NOCTTY
# define O_NOCTTY 0
#endif /* O_NOCTTY */
/*
* Add IRIX-like sigaction_t for those without it.
* SA_RESTART is not required by POSIX; SunOS has SA_INTERRUPT instead.
*/
#ifndef HAVE_SIGACTION_T
typedef struct sigaction sigaction_t;
#endif
#ifndef SA_INTERRUPT
# define SA_INTERRUPT 0
#endif
#ifndef SA_RESTART
# define SA_RESTART 0
#endif
/*
* If dirfd() does not exists, hopefully dd_fd does.
*/
#if !defined(HAVE_DIRFD) && defined(HAVE_DD_FD)
# define dirfd(_d) ((_d)->dd_fd)
# define HAVE_DIRFD
#endif
/*
* Define futimes() in terms of futimesat() if needed.
*/
#if !defined(HAVE_FUTIMES) && defined(HAVE_FUTIMESAT)
# define futimes(_f, _tv) futimesat(_f, NULL, _tv)
# define HAVE_FUTIMES
#endif
#if !defined(HAVE_KILLPG) && !defined(killpg)
# define killpg(s) kill(-(s))
#endif
/*
* If we lack getprogname(), emulate with __progname if possible.
* Otherwise, add a prototype for use with our own getprogname.c.
*/
#ifndef HAVE_GETPROGNAME
# ifdef HAVE___PROGNAME
extern const char *__progname;
# define getprogname() (__progname)
# else
const char *getprogname(void);
# endif /* HAVE___PROGNAME */
#endif /* !HAVE_GETPROGNAME */
/*
* Declare errno if errno.h doesn't do it for us.
*/
#if defined(HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO
extern int errno;
#endif /* !HAVE_DECL_ERRNO */
/* Not all systems define NSIG in signal.h */
#if !defined(NSIG)
# if defined(_NSIG)
# define NSIG _NSIG
# elif defined(__NSIG)
# define NSIG __NSIG
# else
# define NSIG 64
# endif
#endif
/* For sig2str() */
#ifndef SIG2STR_MAX
# define SIG2STR_MAX 32
#endif
#ifndef WCOREDUMP
# define WCOREDUMP(x) ((x) & 0x80)
#endif
#ifndef HAVE_SETEUID
# if defined(HAVE_SETRESUID)
# define seteuid(u) setresuid(-1, (u), -1)
# define setegid(g) setresgid(-1, (g), -1)
# define HAVE_SETEUID 1
# elif defined(HAVE_SETREUID)
# define seteuid(u) setreuid(-1, (u))
# define setegid(g) setregid(-1, (g))
# define HAVE_SETEUID 1
# endif
#endif /* HAVE_SETEUID */
/*
* HP-UX does not declare innetgr() or getdomainname().
* Solaris does not declare getdomainname().
*/
#if defined(__hpux)
int innetgr(const char *, const char *, const char *, const char *);
#endif
#if defined(__hpux) || defined(__sun)
int getdomainname(char *, size_t);
#endif
/* Functions "missing" from libc. */
struct timeval;
struct timespec;
#ifndef HAVE_CLOSEFROM
void closefrom(int);
#endif
#ifndef HAVE_GETCWD
char *getcwd(char *, size_t size);
#endif
#ifndef HAVE_GETGROUPLIST
int getgrouplist(const char *, gid_t, gid_t *, int *);
#endif
#ifndef HAVE_GETLINE
ssize_t getline(char **, size_t *, FILE *);
#endif
#ifndef HAVE_UTIMES
int utimes(const char *, const struct timeval *);
#endif
#ifdef HAVE_FUTIME
int futimes(int, const struct timeval *);
#endif
#if !defined(HAVE_SNPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
int rpl_snprintf(char *, size_t, const char *, ...) __printflike(3, 4);
# undef snprintf
# define snprintf rpl_snprintf
#endif
#if !defined(HAVE_VSNPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
int rpl_vsnprintf(char *, size_t, const char *, va_list) __printflike(3, 0);
# undef vsnprintf
# define vsnprintf rpl_vsnprintf
#endif
#if !defined(HAVE_ASPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
int rpl_asprintf(char **, const char *, ...) __printflike(2, 3);
# undef asprintf
# define asprintf rpl_asprintf
#endif
#if !defined(HAVE_VASPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
int rpl_vasprintf(char **, const char *, va_list) __printflike(2, 0);
# undef vasprintf
# define vasprintf rpl_vasprintf
#endif
#ifndef HAVE_STRLCAT
size_t strlcat(char *, const char *, size_t);
#endif
#ifndef HAVE_STRLCPY
size_t strlcpy(char *, const char *, size_t);
#endif
#ifndef HAVE_MEMRCHR
void *memrchr(const void *, int, size_t);
#endif
#ifndef HAVE_MEMSET_S
errno_t memset_s(void *, rsize_t, int, rsize_t);
#endif
#ifndef HAVE_MKDTEMP
char *mkdtemp(char *);
#endif
#ifndef HAVE_MKSTEMPS
int mkstemps(char *, int);
#endif
#ifndef HAVE_PW_DUP
struct passwd *pw_dup(const struct passwd *);
#endif
#ifndef HAVE_SETENV
int setenv(const char *, const char *, int);
#endif
#ifndef HAVE_UNSETENV
int unsetenv(const char *);
#endif
#ifndef HAVE_STRSIGNAL
char *strsignal(int);
#endif
#ifndef HAVE_SIG2STR
int sig2str(int, char *);
#endif
#ifndef HAVE_STRTONUM
long long rpl_strtonum(const char *, long long, long long, const char **);
# undef strtonum
# define strtonum rpl_strtonum
#endif
#ifndef HAVE_CLOCK_GETTIME
# define CLOCK_REALTIME 0
# ifdef __MACH__
# define CLOCK_MONOTONIC 1
# endif
int clock_gettime(clockid_t clock_id, struct timespec *tp);
#endif
#ifndef HAVE_INET_PTON
int inet_pton(int af, const char *src, void *dst);
#endif
#endif /* _SUDO_MISSING_H */
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