1 files changed, 531 insertions, 0 deletions
diff --git a/include/sudo_compat.h b/include/sudo_compat.h
new file mode 100644
index 0000000..5c32840
--- /dev/null
+++ b/include/sudo_compat.h
@@ -0,0 +1,531 @@
+/*
+ * Copyright (c) 1996, 1998-2005, 2008, 2009-2018
+ *	Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * 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_COMPAT_H
+#define SUDO_COMPAT_H
+
+#include <stdio.h>
+#if !defined(HAVE_VSNPRINTF) || !defined(HAVE_VASPRINTF) || \
+    !defined(HAVE_VSYSLOG) || defined(PREFER_PORTABLE_SNPRINTF)
+# include <stdarg.h>
+#endif
+#if !defined(HAVE_MEMSET_S) && !defined(rsize_t)
+# include <stddef.h>	/* for rsize_t */
+# ifdef HAVE_STRING_H
+#  include <string.h>	/* for rsize_t on AIX */
+# endif /* HAVE_STRING_H */
+#endif /* HAVE_MEMSET_S && rsize_t */
+
+/*
+ * 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
+
+/*
+ * 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.
+ */
+#if defined(HAVE_DECL_LLONG_MAX) && !HAVE_DECL_LLONG_MAX
+# if defined(HAVE_DECL_QUAD_MAX) && HAVE_DECL_QUAD_MAX
+#  define LLONG_MAX	QUAD_MAX
+# else
+#  define LLONG_MAX	0x7fffffffffffffffLL
+# endif
+#endif
+
+#if defined(HAVE_DECL_LLONG_MIN) && !HAVE_DECL_LLONG_MIN
+# if defined(HAVE_DECL_QUAD_MIN) && HAVE_DECL_QUAD_MIN
+#  define LLONG_MIN	QUAD_MIN
+# else
+#  define LLONG_MIN	(-0x7fffffffffffffffLL-1)
+# endif
+#endif
+
+#if defined(HAVE_DECL_ULLONG_MAX) && !HAVE_DECL_ULLONG_MAX
+# if defined(HAVE_DECL_UQUAD_MAX) && HAVE_DECL_UQUAD_MAX
+#  define ULLONG_MAX	UQUAD_MAX
+# else
+#  define ULLONG_MAX	0xffffffffffffffffULL
+# endif
+#endif
+
+#if defined(HAVE_DECL_SIZE_MAX) && !HAVE_DECL_SIZE_MAX
+# if defined(HAVE_DECL_SIZE_T_MAX) && HAVE_DECL_SIZE_T_MAX
+#  define SIZE_MAX	SIZE_T_MAX
+# else
+#  define SIZE_MAX	ULONG_MAX
+# endif
+#endif
+
+#if defined(HAVE_DECL_PATH_MAX) && !HAVE_DECL_PATH_MAX
+# if defined(HAVE_DECL__POSIX_PATH_MAX) && HAVE_DECL__POSIX_PATH_MAX
+#  define PATH_MAX		_POSIX_PATH_MAX
+# else
+#  define PATH_MAX		256
+# 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_IFIFO
+# define _S_IFIFO		S_IFIFO
+#endif /* _S_IFIFO */
+#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 */
+#ifndef S_ISLNK
+# define S_ISLNK(m)		(((m) & _S_IFMT) == _S_IFLNK)
+#endif /* S_ISLNK */
+#ifndef S_ISFIFO
+# define S_ISFIFO(m)		(((m) & _S_IFMT) == _S_IFIFO)
+#endif /* S_ISLNK */
+#ifndef S_ISTXT
+# define S_ISTXT		0001000
+#endif /* S_ISTXT */
+
+/*
+ * ACCESSPERMS (00777) and ALLPERMS (07777) are handy BSDisms
+ */
+#ifndef ACCESSPERMS
+# define ACCESSPERMS	(S_IRWXU|S_IRWXG|S_IRWXO)
+#endif /* ACCESSPERMS */
+#ifndef ALLPERMS
+# define ALLPERMS	(S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO)
+#endif /* ALLPERMS */
+
+/* For futimens() and utimensat() emulation. */
+#if !defined(HAVE_FUTIMENS) && !defined(HAVE_UTIMENSAT)
+# ifndef UTIME_OMIT
+#  define UTIME_OMIT	-1L
+# endif
+# ifndef UTIME_NOW
+#  define UTIME_NOW	-2L
+# endif
+#endif
+#if !defined(HAVE_OPENAT) || (!defined(HAVE_FUTIMENS) && !defined(HAVE_UTIMENSAT))
+# ifndef AT_FDCWD
+#  define AT_FDCWD	-100
+# endif
+#endif
+
+/* For pipe2() emulation. */
+#if !defined(HAVE_PIPE2) && defined(O_NONBLOCK) && !defined(O_CLOEXEC)
+# define O_CLOEXEC	0x80000000
+#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
+
+/*
+ * Simple isblank() macro and function for systems without it.
+ */
+#ifndef HAVE_ISBLANK
+__dso_public 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 */
+
+/*
+ * The nitems macro may be defined in sys/param.h
+ */
+#ifndef nitems
+# define nitems(_a)	(sizeof((_a)) / sizeof((_a)[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
+
+#if !defined(HAVE_KILLPG) && !defined(killpg)
+# define killpg(p, s)	kill(-(p), (s))
+#endif
+
+/*
+ * 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() */
+#if !defined(HAVE_DECL_SIG2STR_MAX) || !HAVE_DECL_SIG2STR_MAX
+# define SIG2STR_MAX 32
+#endif
+
+/* WCOREDUMP is not POSIX, this usually works (verified on AIX). */
+#ifndef WCOREDUMP
+# define WCOREDUMP(x)	((x) & 0x80)
+#endif
+
+/* W_EXITCODE is not POSIX but the encoding of wait status is. */
+#ifndef W_EXITCODE
+# define W_EXITCODE(ret, sig)	((ret) << 8 | (sig))
+#endif
+
+/* Number of bits in a byte. */
+#ifndef NBBY
+# ifdef __NBBY
+#  define NBBY __NBBY
+# else
+#  define NBBY 8
+# endif
+#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 */
+
+/*
+ * Older HP-UX does not declare setresuid() or setresgid().
+ */
+#if defined(HAVE_DECL_SETRESUID) && !HAVE_DECL_SETRESUID
+int setresuid(uid_t, uid_t, uid_t);
+int setresgid(gid_t, gid_t, gid_t);
+#endif
+#if defined(HAVE_DECL_GETRESUID) && !HAVE_DECL_GETRESUID
+int getresuid(uid_t *, uid_t *, uid_t *);
+int getresgid(gid_t *, gid_t *, gid_t *);
+#endif
+
+/*
+ * HP-UX does not declare innetgr() or getdomainname().
+ * Solaris does not declare getdomainname().
+ */
+#if defined(HAVE_DECL_INNETGR) && !HAVE_DECL_INNETGR
+int innetgr(const char *, const char *, const char *, const char *);
+#endif
+#if defined(HAVE_DECL__INNETGR) && !HAVE_DECL__INNETGR
+int _innetgr(const char *, const char *, const char *, const char *);
+#endif
+#if defined(HAVE_DECL_GETDOMAINNAME) && !HAVE_DECL_GETDOMAINNAME
+int getdomainname(char *, size_t);
+#endif
+
+/*
+ * HP-UX 11.00 has broken pread/pwrite that can't handle a 64-bit off_t
+ * on 32-bit machines.
+ */
+#if defined(__hpux) && !defined(__LP64__)
+# ifdef HAVE_PREAD64
+#  undef pread
+#  define pread(_a, _b, _c, _d) pread64((_a), (_b), (_c), (_d))
+# endif
+# ifdef HAVE_PWRITE64
+#  undef pwrite
+#  define pwrite(_a, _b, _c, _d) pwrite64((_a), (_b), (_c), (_d))
+# endif
+#endif /* __hpux && !__LP64__ */
+
+/* We wrap OpenBSD's strtonum() to get translatable error strings. */
+__dso_public long long sudo_strtonum(const char *, long long, long long, const char **);
+#undef strtonum
+#define strtonum(_a, _b, _c, _d) sudo_strtonum((_a), (_b), (_c), (_d))
+
+/*
+ * Functions "missing" from libc.
+ * All libc replacements are prefixed with "sudo_" to avoid namespace issues.
+ */
+
+struct passwd;
+struct timespec;
+
+#ifndef HAVE_CLOSEFROM
+__dso_public void sudo_closefrom(int);
+# undef closefrom
+# define closefrom(_a) sudo_closefrom((_a))
+#endif /* HAVE_CLOSEFROM */
+#ifdef PREFER_PORTABLE_GETCWD
+__dso_public char *sudo_getcwd(char *, size_t size);
+# undef getcwd
+# define getcwd(_a, _b) sudo_getcwd((_a), (_b))
+#endif /* PREFER_PORTABLE_GETCWD */
+#ifndef HAVE_GETGROUPLIST
+__dso_public int sudo_getgrouplist(const char *name, GETGROUPS_T basegid, GETGROUPS_T *groups, int *ngroupsp);
+# undef getgrouplist
+# define getgrouplist(_a, _b, _c, _d) sudo_getgrouplist((_a), (_b), (_c), (_d))
+#endif /* GETGROUPLIST */
+#ifndef HAVE_GETLINE
+__dso_public ssize_t sudo_getline(char **bufp, size_t *bufsizep, FILE *fp);
+# undef getline
+# define getline(_a, _b, _c) sudo_getline((_a), (_b), (_c))
+#endif /* HAVE_GETLINE */
+#ifndef HAVE_UTIMENSAT
+__dso_public int sudo_utimensat(int fd, const char *file, const struct timespec *times, int flag);
+# undef utimensat
+# define utimensat(_a, _b, _c, _d) sudo_utimensat((_a), (_b), (_c), (_d))
+#endif /* HAVE_UTIMENSAT */
+#ifndef HAVE_FUTIMENS
+__dso_public int sudo_futimens(int fd, const struct timespec *times);
+# undef futimens
+# define futimens(_a, _b) sudo_futimens((_a), (_b))
+#endif /* HAVE_FUTIMENS */
+#if !defined(HAVE_SNPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
+__dso_public int sudo_snprintf(char *str, size_t n, char const *fmt, ...) __printflike(3, 4);
+# undef snprintf
+# define snprintf sudo_snprintf
+#endif /* HAVE_SNPRINTF */
+#if !defined(HAVE_VSNPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
+__dso_public int sudo_vsnprintf(char *str, size_t n, const char *fmt, va_list ap) __printflike(3, 0);
+# undef vsnprintf
+# define vsnprintf sudo_vsnprintf
+#endif /* HAVE_VSNPRINTF */
+#if !defined(HAVE_ASPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
+__dso_public int sudo_asprintf(char **str, char const *fmt, ...) __printflike(2, 3);
+# undef asprintf
+# define asprintf sudo_asprintf
+#endif /* HAVE_ASPRINTF */
+#if !defined(HAVE_VASPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
+__dso_public int sudo_vasprintf(char **str, const char *fmt, va_list ap) __printflike(2, 0);
+# undef vasprintf
+# define vasprintf sudo_vasprintf
+#endif /* HAVE_VASPRINTF */
+#ifndef HAVE_STRLCAT
+__dso_public size_t sudo_strlcat(char *dst, const char *src, size_t siz);
+# undef strlcat
+# define strlcat(_a, _b, _c) sudo_strlcat((_a), (_b), (_c))
+#endif /* HAVE_STRLCAT */
+#ifndef HAVE_STRLCPY
+__dso_public size_t sudo_strlcpy(char *dst, const char *src, size_t siz);
+# undef strlcpy
+# define strlcpy(_a, _b, _c) sudo_strlcpy((_a), (_b), (_c))
+#endif /* HAVE_STRLCPY */
+#ifndef HAVE_STRNDUP
+__dso_public char *sudo_strndup(const char *str, size_t maxlen);
+# undef strndup
+# define strndup(_a, _b) sudo_strndup((_a), (_b))
+#endif /* HAVE_STRNDUP */
+#ifndef HAVE_STRNLEN
+__dso_public size_t sudo_strnlen(const char *str, size_t maxlen);
+# undef strnlen
+# define strnlen(_a, _b) sudo_strnlen((_a), (_b))
+#endif /* HAVE_STRNLEN */
+#ifndef HAVE_MEMRCHR
+__dso_public void *sudo_memrchr(const void *s, int c, size_t n);
+# undef memrchr
+# define memrchr(_a, _b, _c) sudo_memrchr((_a), (_b), (_c))
+#endif /* HAVE_MEMRCHR */
+#ifndef HAVE_MEMSET_S
+__dso_public errno_t sudo_memset_s(void *v, rsize_t smax, int c, rsize_t n);
+# undef memset_s
+# define memset_s(_a, _b, _c, _d) sudo_memset_s((_a), (_b), (_c), (_d))
+#endif /* HAVE_MEMSET_S */
+#if !defined(HAVE_MKDTEMP) || !defined(HAVE_MKSTEMPS)
+__dso_public char *sudo_mkdtemp(char *path);
+# undef mkdtemp
+# define mkdtemp(_a) sudo_mkdtemp((_a))
+__dso_public int sudo_mkstemps(char *path, int slen);
+# undef mkstemps
+# define mkstemps(_a, _b) sudo_mkstemps((_a), (_b))
+#endif /* !HAVE_MKDTEMP || !HAVE_MKSTEMPS */
+#ifndef HAVE_NANOSLEEP
+__dso_public int sudo_nanosleep(const struct timespec *timeout, struct timespec *remainder);
+#undef nanosleep
+# define nanosleep(_a, _b) sudo_nanosleep((_a), (_b))
+#endif
+#ifndef HAVE_PW_DUP
+__dso_public struct passwd *sudo_pw_dup(const struct passwd *pw);
+# undef pw_dup
+# define pw_dup(_a) sudo_pw_dup((_a))
+#endif /* HAVE_PW_DUP */
+#ifndef HAVE_STRSIGNAL
+__dso_public char *sudo_strsignal(int signo);
+# undef strsignal
+# define strsignal(_a) sudo_strsignal((_a))
+#endif /* HAVE_STRSIGNAL */
+#ifndef HAVE_SIG2STR
+__dso_public int sudo_sig2str(int signo, char *signame);
+# undef sig2str
+# define sig2str(_a, _b) sudo_sig2str((_a), (_b))
+#endif /* HAVE_SIG2STR */
+#if !defined(HAVE_INET_NTOP) && defined(SUDO_NET_IFS_C)
+__dso_public char *sudo_inet_ntop(int af, const void *src, char *dst, socklen_t size);
+# undef inet_ntop
+# define inet_ntop(_a, _b, _c, _d) sudo_inet_ntop((_a), (_b), (_c), (_d))
+#endif /* HAVE_INET_NTOP */
+#ifndef HAVE_INET_PTON
+__dso_public int sudo_inet_pton(int af, const char *src, void *dst);
+# undef inet_pton
+# define inet_pton(_a, _b, _c) sudo_inet_pton((_a), (_b), (_c))
+#endif /* HAVE_INET_PTON */
+#ifndef HAVE_GETPROGNAME
+__dso_public const char *sudo_getprogname(void);
+# undef getprogname
+# define getprogname() sudo_getprogname()
+#endif /* HAVE_GETPROGNAME */
+#ifndef HAVE_REALLOCARRAY
+__dso_public void *sudo_reallocarray(void *ptr, size_t nmemb, size_t size);
+# undef reallocarray
+# define reallocarray(_a, _b, _c) sudo_reallocarray((_a), (_b), (_c))
+#endif /* HAVE_REALLOCARRAY */
+#ifndef HAVE_VSYSLOG
+__dso_public void sudo_vsyslog(int pri, const char *fmt, va_list ap);
+# undef vsyslog
+# define vsyslog(_a, _b, _c) sudo_vsyslog((_a), (_b), (_c))
+#endif /* HAVE_VSYSLOG */
+#ifndef HAVE_PIPE2
+__dso_public int sudo_pipe2(int fildes[2], int flags);
+# undef pipe2
+# define pipe2(_a, _b) sudo_pipe2((_a), (_b))
+#endif /* HAVE_PIPE2 */
+
+#endif /* SUDO_COMPAT_H */