1 files changed, 440 insertions, 0 deletions
diff --git a/openbsd-compat/bsd-misc.c b/openbsd-compat/bsd-misc.c
new file mode 100644
index 0000000..059b6d3
--- /dev/null
+++ b/openbsd-compat/bsd-misc.c
@@ -0,0 +1,440 @@
+
+/*
+ * Copyright (c) 1999-2004 Damien Miller <djm@mindrot.org>
+ *
+ * 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.
+ */
+
+#include "includes.h"
+
+#include <sys/types.h>
+#ifdef HAVE_SYS_SELECT_H
+# include <sys/select.h>
+#endif
+#ifdef HAVE_SYS_TIME_H
+# include <sys/time.h>
+#endif
+
+#include <fcntl.h>
+#include <string.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <time.h>
+#include <unistd.h>
+
+#ifndef HAVE___PROGNAME
+char *__progname;
+#endif
+
+/*
+ * NB. duplicate __progname in case it is an alias for argv[0]
+ * Otherwise it may get clobbered by setproctitle()
+ */
+char *ssh_get_progname(char *argv0)
+{
+	char *p, *q;
+#ifdef HAVE___PROGNAME
+	extern char *__progname;
+
+	p = __progname;
+#else
+	if (argv0 == NULL)
+		return ("unknown");	/* XXX */
+	p = strrchr(argv0, '/');
+	if (p == NULL)
+		p = argv0;
+	else
+		p++;
+#endif
+	if ((q = strdup(p)) == NULL) {
+		perror("strdup");
+		exit(1);
+	}
+	return q;
+}
+
+#ifndef HAVE_SETLOGIN
+int setlogin(const char *name)
+{
+	return (0);
+}
+#endif /* !HAVE_SETLOGIN */
+
+#ifndef HAVE_INNETGR
+int innetgr(const char *netgroup, const char *host,
+	    const char *user, const char *domain)
+{
+	return (0);
+}
+#endif /* HAVE_INNETGR */
+
+#if !defined(HAVE_SETEUID) && defined(HAVE_SETREUID)
+int seteuid(uid_t euid)
+{
+	return (setreuid(-1, euid));
+}
+#endif /* !defined(HAVE_SETEUID) && defined(HAVE_SETREUID) */
+
+#if !defined(HAVE_SETEGID) && defined(HAVE_SETRESGID)
+int setegid(uid_t egid)
+{
+	return(setresgid(-1, egid, -1));
+}
+#endif /* !defined(HAVE_SETEGID) && defined(HAVE_SETRESGID) */
+
+#if !defined(HAVE_STRERROR) && defined(HAVE_SYS_ERRLIST) && defined(HAVE_SYS_NERR)
+const char *strerror(int e)
+{
+	extern int sys_nerr;
+	extern char *sys_errlist[];
+
+	if ((e >= 0) && (e < sys_nerr))
+		return (sys_errlist[e]);
+
+	return ("unlisted error");
+}
+#endif
+
+#ifndef HAVE_UTIMES
+int utimes(char *filename, struct timeval *tvp)
+{
+	struct utimbuf ub;
+
+	ub.actime = tvp[0].tv_sec;
+	ub.modtime = tvp[1].tv_sec;
+
+	return (utime(filename, &ub));
+}
+#endif
+
+#ifndef HAVE_UTIMENSAT
+/*
+ * A limited implementation of utimensat() that only implements the
+ * functionality used by OpenSSH, currently only AT_FDCWD and
+ * AT_SYMLINK_NOFOLLOW.
+ */
+int
+utimensat(int fd, const char *path, const struct timespec times[2],
+    int flag)
+{
+	struct timeval tv[2];
+# ifdef HAVE_FUTIMES
+	int ret, oflags = O_WRONLY;
+# endif
+
+	tv[0].tv_sec = times[0].tv_sec;
+	tv[0].tv_usec = times[0].tv_nsec / 1000;
+	tv[1].tv_sec = times[1].tv_sec;
+	tv[1].tv_usec = times[1].tv_nsec / 1000;
+
+	if (fd != AT_FDCWD) {
+		errno = ENOSYS;
+		return -1;
+	}
+# ifndef HAVE_FUTIMES
+	return utimes(path, tv);
+# else
+#  ifdef O_NOFOLLOW
+	if (flag & AT_SYMLINK_NOFOLLOW)
+		oflags |= O_NOFOLLOW;
+#  endif /* O_NOFOLLOW */
+	if ((fd = open(path, oflags)) == -1)
+		return -1;
+	ret = futimes(fd, tv);
+	close(fd);
+	return ret;
+# endif
+}
+#endif
+
+#ifndef HAVE_FCHOWNAT
+/*
+ * A limited implementation of fchownat() that only implements the
+ * functionality used by OpenSSH, currently only AT_FDCWD and
+ * AT_SYMLINK_NOFOLLOW.
+ */
+int
+fchownat(int fd, const char *path, uid_t owner, gid_t group, int flag)
+{
+	int ret, oflags = O_WRONLY;
+
+	if (fd != AT_FDCWD) {
+		errno = ENOSYS;
+		return -1;
+	}
+# ifndef HAVE_FCHOWN
+	return chown(path, owner, group);
+# else
+#  ifdef O_NOFOLLOW
+	if (flag & AT_SYMLINK_NOFOLLOW)
+		oflags |= O_NOFOLLOW;
+#  endif /* O_NOFOLLOW */
+	if ((fd = open(path, oflags)) == -1)
+		return -1;
+	ret = fchown(fd, owner, group);
+	close(fd);
+	return ret;
+# endif
+}
+#endif
+
+#ifndef HAVE_FCHMODAT
+/*
+ * A limited implementation of fchmodat() that only implements the
+ * functionality used by OpenSSH, currently only AT_FDCWD and
+ * AT_SYMLINK_NOFOLLOW.
+ */
+int
+fchmodat(int fd, const char *path, mode_t mode, int flag)
+{
+	int ret, oflags = O_WRONLY;
+
+	if (fd != AT_FDCWD) {
+		errno = ENOSYS;
+		return -1;
+	}
+# ifndef HAVE_FCHMOD
+	return chmod(path, mode);
+# else
+#  ifdef O_NOFOLLOW
+	if (flag & AT_SYMLINK_NOFOLLOW)
+		oflags |= O_NOFOLLOW;
+#  endif /* O_NOFOLLOW */
+	if ((fd = open(path, oflags)) == -1)
+		return -1;
+	ret = fchmod(fd, mode);
+	close(fd);
+	return ret;
+# endif
+}
+#endif
+
+#ifndef HAVE_TRUNCATE
+int truncate(const char *path, off_t length)
+{
+	int fd, ret, saverrno;
+
+	fd = open(path, O_WRONLY);
+	if (fd < 0)
+		return (-1);
+
+	ret = ftruncate(fd, length);
+	saverrno = errno;
+	close(fd);
+	if (ret == -1)
+		errno = saverrno;
+
+	return(ret);
+}
+#endif /* HAVE_TRUNCATE */
+
+#if !defined(HAVE_NANOSLEEP) && !defined(HAVE_NSLEEP)
+int nanosleep(const struct timespec *req, struct timespec *rem)
+{
+	int rc, saverrno;
+	extern int errno;
+	struct timeval tstart, tstop, tremain, time2wait;
+
+	TIMESPEC_TO_TIMEVAL(&time2wait, req)
+	(void) gettimeofday(&tstart, NULL);
+	rc = select(0, NULL, NULL, NULL, &time2wait);
+	if (rc == -1) {
+		saverrno = errno;
+		(void) gettimeofday (&tstop, NULL);
+		errno = saverrno;
+		tremain.tv_sec = time2wait.tv_sec -
+			(tstop.tv_sec - tstart.tv_sec);
+		tremain.tv_usec = time2wait.tv_usec -
+			(tstop.tv_usec - tstart.tv_usec);
+		tremain.tv_sec += tremain.tv_usec / 1000000L;
+		tremain.tv_usec %= 1000000L;
+	} else {
+		tremain.tv_sec = 0;
+		tremain.tv_usec = 0;
+	}
+	if (rem != NULL)
+		TIMEVAL_TO_TIMESPEC(&tremain, rem)
+
+	return(rc);
+}
+#endif
+
+#if !defined(HAVE_USLEEP)
+int usleep(unsigned int useconds)
+{
+	struct timespec ts;
+
+	ts.tv_sec = useconds / 1000000;
+	ts.tv_nsec = (useconds % 1000000) * 1000;
+	return nanosleep(&ts, NULL);
+}
+#endif
+
+#ifndef HAVE_TCGETPGRP
+pid_t
+tcgetpgrp(int fd)
+{
+	int ctty_pgrp;
+
+	if (ioctl(fd, TIOCGPGRP, &ctty_pgrp) == -1)
+		return(-1);
+	else
+		return(ctty_pgrp);
+}
+#endif /* HAVE_TCGETPGRP */
+
+#ifndef HAVE_TCSENDBREAK
+int
+tcsendbreak(int fd, int duration)
+{
+# if defined(TIOCSBRK) && defined(TIOCCBRK)
+	struct timeval sleepytime;
+
+	sleepytime.tv_sec = 0;
+	sleepytime.tv_usec = 400000;
+	if (ioctl(fd, TIOCSBRK, 0) == -1)
+		return (-1);
+	(void)select(0, 0, 0, 0, &sleepytime);
+	if (ioctl(fd, TIOCCBRK, 0) == -1)
+		return (-1);
+	return (0);
+# else
+	return -1;
+# endif
+}
+#endif /* HAVE_TCSENDBREAK */
+
+#ifndef HAVE_STRDUP
+char *
+strdup(const char *str)
+{
+	size_t len;
+	char *cp;
+
+	len = strlen(str) + 1;
+	cp = malloc(len);
+	if (cp != NULL)
+		return(memcpy(cp, str, len));
+	return NULL;
+}
+#endif
+
+#ifndef HAVE_ISBLANK
+int
+isblank(int c)
+{
+	return (c == ' ' || c == '\t');
+}
+#endif
+
+#ifndef HAVE_GETPGID
+pid_t
+getpgid(pid_t pid)
+{
+#if defined(HAVE_GETPGRP) && !defined(GETPGRP_VOID) && GETPGRP_VOID == 0
+	return getpgrp(pid);
+#elif defined(HAVE_GETPGRP)
+	if (pid == 0)
+		return getpgrp();
+#endif
+
+	errno = ESRCH;
+	return -1;
+}
+#endif
+
+#ifndef HAVE_PLEDGE
+int
+pledge(const char *promises, const char *paths[])
+{
+	return 0;
+}
+#endif
+
+#ifndef HAVE_MBTOWC
+/* a mbtowc that only supports ASCII */
+int
+mbtowc(wchar_t *pwc, const char *s, size_t n)
+{
+	if (s == NULL || *s == '\0')
+		return 0;	/* ASCII is not state-dependent */
+	if (*s < 0 || *s > 0x7f || n < 1) {
+		errno = EOPNOTSUPP;
+		return -1;
+	}
+	if (pwc != NULL)
+		*pwc = *s;
+	return 1;
+}
+#endif
+
+#ifndef HAVE_LLABS
+long long
+llabs(long long j)
+{
+	return (j < 0 ? -j : j);
+}
+#endif
+
+#ifndef HAVE_BZERO
+void
+bzero(void *b, size_t n)
+{
+	(void)memset(b, 0, n);
+}
+#endif
+
+#ifndef HAVE_RAISE
+int
+raise(int sig)
+{
+	kill(getpid(), sig);
+}
+#endif
+
+#ifndef HAVE_GETSID
+pid_t
+getsid(pid_t pid)
+{
+	errno = ENOSYS;
+	return -1;
+}
+#endif
+
+#ifdef FFLUSH_NULL_BUG
+#undef fflush
+int _ssh_compat_fflush(FILE *f)
+{
+	int r1, r2;
+
+	if (f == NULL) {
+		r1 = fflush(stdout);
+		r2 = fflush(stderr);
+		if (r1 == -1 || r2 == -1)
+			return -1;
+		return 0;
+	}
+	return fflush(f);
+}
+#endif
+
+#ifndef HAVE_LOCALTIME_R
+struct tm *
+localtime_r(const time_t *timep, struct tm *result)
+{
+	struct tm *tm = localtime(timep);
+	*result = *tm;
+	return result;
+}
+#endif