1f3ea50afd
A new constant, SUDO_CONV_REPL_MAX, is defined by the plugin API as the max conversation reply length. This constant can be used as a max value for memset_s() when clearing passwords filled in by the conversation function.
416 lines
9.8 KiB
C
416 lines
9.8 KiB
C
/*
|
|
* Copyright (c) 1996, 1998-2005, 2008, 2009-2013
|
|
* 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>
|
|
#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__(2, 7)
|
|
# define __printflike(f, v) __attribute__((__format__ (__printf__, f, v)))
|
|
# else
|
|
# define __printflike(f, v)
|
|
# 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
|
|
|
|
#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
|
|
|
|
/*
|
|
* Some systems lack full limit definitions.
|
|
*/
|
|
#ifndef OPEN_MAX
|
|
# define OPEN_MAX 256
|
|
#endif
|
|
|
|
#ifndef INT_MAX
|
|
# define INT_MAX 0x7fffffff
|
|
#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))
|
|
|
|
/*
|
|
* Some systems define this in <sys/param.h> but we don't include that anymore.
|
|
*/
|
|
#ifndef howmany
|
|
# define howmany(x, y) (((x) + ((y) - 1)) / (y))
|
|
#endif
|
|
|
|
/*
|
|
* 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);
|
|
void setprogname(const char *);
|
|
# 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 */
|
|
|
|
#ifndef timevalclear
|
|
# define timevalclear(tv) ((tv)->tv_sec = (tv)->tv_usec = 0)
|
|
#endif
|
|
#ifndef timevalisset
|
|
# define timevalisset(tv) ((tv)->tv_sec || (tv)->tv_usec)
|
|
#endif
|
|
#ifndef timevalcmp
|
|
# define timevalcmp(tv1, tv2, op) \
|
|
(((tv1)->tv_sec == (tv2)->tv_sec) ? \
|
|
((tv1)->tv_usec op (tv2)->tv_usec) : \
|
|
((tv1)->tv_sec op (tv2)->tv_sec))
|
|
#endif
|
|
#ifndef timevaladd
|
|
# define timevaladd(tv1, tv2) \
|
|
do { \
|
|
(tv1)->tv_sec += (tv2)->tv_sec; \
|
|
(tv1)->tv_usec += (tv2)->tv_usec; \
|
|
if ((tv1)->tv_usec >= 1000000) { \
|
|
(tv1)->tv_sec++; \
|
|
(tv1)->tv_usec -= 1000000; \
|
|
} \
|
|
} while (0)
|
|
#endif
|
|
#ifndef timevalsub
|
|
# define timevalsub(tv1, tv2) \
|
|
do { \
|
|
(tv1)->tv_sec -= (tv2)->tv_sec; \
|
|
(tv1)->tv_usec -= (tv2)->tv_usec; \
|
|
if ((tv1)->tv_usec < 0) { \
|
|
(tv1)->tv_sec--; \
|
|
(tv1)->tv_usec += 1000000; \
|
|
} \
|
|
} while (0)
|
|
#endif
|
|
|
|
/* 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
|
|
#ifndef HAVE_SNPRINTF
|
|
int snprintf(char *, size_t, const char *, ...) __printflike(3, 4);
|
|
#endif
|
|
#ifndef HAVE_VSNPRINTF
|
|
int vsnprintf(char *, size_t, const char *, va_list) __printflike(3, 0);
|
|
#endif
|
|
#ifndef HAVE_ASPRINTF
|
|
int asprintf(char **, const char *, ...) __printflike(2, 3);
|
|
#endif
|
|
#ifndef HAVE_VASPRINTF
|
|
int vasprintf(char **, const char *, va_list) __printflike(2, 0);
|
|
#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_NANOSLEEP
|
|
int nanosleep(const struct timespec *, struct timespec *);
|
|
#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
|
|
|
|
#endif /* _SUDO_MISSING_H */
|