Use libutil and libypclnt for all passwd manipulation and NIS needs.

Sponsored by:	DARPA, NAI Labs

4 files changed, 47 insertions, 353 deletions

diff --git a/usr.sbin/vipw/Makefile b/usr.sbin/vipw/Makefile
index ca9f2f5..1dd091a 100644
--- a/usr.sbin/vipw/Makefile
+++ b/usr.sbin/vipw/Makefile
@@ -3,7 +3,8 @@
 
 PROG=	vipw
 MAN=	vipw.8
-SRCS=	pw_util.c vipw.c
+DPADD=	${LIBUTIL}
+LDADD=	-lutil
 WARNS?=	4
 
 .include <bsd.prog.mk>
diff --git a/usr.sbin/vipw/pw_util.c b/usr.sbin/vipw/pw_util.c
deleted file mode 100644
index 1c163d2..0000000
--- a/usr.sbin/vipw/pw_util.c
+++ /dev/null
@@ -1,258 +0,0 @@
-/*-
- * Copyright (c) 1990, 1993, 1994
- *	The Regents of the University of California.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef lint
-#if 0
-static const char sccsid[] = "@(#)pw_util.c	8.3 (Berkeley) 4/2/94";
-#endif
-static const char rcsid[] =
-  "$FreeBSD$";
-#endif /* not lint */
-
-/*
- * This file is used by all the "password" programs; vipw(8), chpass(1),
- * and passwd(1).
- */
-
-#include <sys/param.h>
-#include <sys/errno.h>
-#include <sys/time.h>
-#include <sys/resource.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-
-#include <err.h>
-#include <fcntl.h>
-#include <paths.h>
-#include <pwd.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "pw_util.h"
-
-extern char *tempname;
-static pid_t editpid = -1;
-static int lockfd;
-static char _default_editor[] = _PATH_VI;
-static char _default_mppath[] = _PATH_PWD;
-static char _default_masterpasswd[] = _PATH_MASTERPASSWD;
-char *mppath = _default_mppath;
-char *masterpasswd = _default_masterpasswd;
-
-void		 pw_cont(int);
-
-void
-pw_cont(int sig)
-{
-
-	if (editpid != -1)
-		kill(editpid, sig);
-}
-
-void
-pw_init(void)
-{
-	struct rlimit rlim;
-
-	/* Unlimited resource limits. */
-	rlim.rlim_cur = rlim.rlim_max = RLIM_INFINITY;
-	(void)setrlimit(RLIMIT_CPU, &rlim);
-	(void)setrlimit(RLIMIT_FSIZE, &rlim);
-	(void)setrlimit(RLIMIT_STACK, &rlim);
-	(void)setrlimit(RLIMIT_DATA, &rlim);
-	(void)setrlimit(RLIMIT_RSS, &rlim);
-
-	/* Don't drop core (not really necessary, but GP's). */
-	rlim.rlim_cur = rlim.rlim_max = 0;
-	(void)setrlimit(RLIMIT_CORE, &rlim);
-
-	/* Turn off signals. */
-	(void)signal(SIGALRM, SIG_IGN);
-	(void)signal(SIGHUP, SIG_IGN);
-	(void)signal(SIGINT, SIG_IGN);
-	(void)signal(SIGPIPE, SIG_IGN);
-	(void)signal(SIGQUIT, SIG_IGN);
-	(void)signal(SIGTERM, SIG_IGN);
-	(void)signal(SIGCONT, pw_cont);
-
-	/* Create with exact permissions. */
-	(void)umask(0);
-}
-
-int
-pw_lock(void)
-{
-	/*
-	 * If the master password file doesn't exist, the system is hosed.
-	 * Might as well try to build one.  Set the close-on-exec bit so
-	 * that users can't get at the encrypted passwords while editing.
-	 * Open should allow flock'ing the file; see 4.4BSD.	XXX
-	 */
-	for (;;) {
-		struct stat st;
-
-		lockfd = open(masterpasswd, O_RDONLY, 0);
-		if (lockfd < 0 || fcntl(lockfd, F_SETFD, 1) == -1)
-			err(1, "%s", masterpasswd);
-		if (flock(lockfd, LOCK_EX|LOCK_NB))
-			errx(1, "the password db file is busy");
-
-		/*
-		 * If the password file was replaced while we were trying to
-		 * get the lock, our hardlink count will be 0 and we have to
-		 * close and retry.
-		 */
-		if (fstat(lockfd, &st) < 0)
-			errx(1, "fstat() failed");
-		if (st.st_nlink != 0)
-			break;
-		close(lockfd);
-		lockfd = -1;
-	}
-	return (lockfd);
-}
-
-int
-pw_tmp(void)
-{
-	static char path[MAXPATHLEN];
-	int fd;
-	char *p;
-
-	strncpy(path, masterpasswd, MAXPATHLEN - 1);
-	path[MAXPATHLEN] = '\0';
-
-	if ((p = strrchr(path, '/')))
-		++p;
-	else
-		p = path;
-	strcpy(p, "pw.XXXXXX");
-	if ((fd = mkstemp(path)) == -1)
-		err(1, "%s", path);
-	tempname = path;
-	return (fd);
-}
-
-int
-pw_mkdb(const char *username)
-{
-	int pstat;
-	pid_t pid;
-
-	(void)fflush(stderr);
-	if (!(pid = fork())) {
-		if(!username) {
-			warnx("rebuilding the database...");
-			execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", "-d", mppath,
-			    tempname, (char *)NULL);
-		} else {
-			warnx("updating the database...");
-			execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", "-d", mppath,
-			    "-u", username, tempname, (char *)NULL);
-		}
-		pw_error(_PATH_PWD_MKDB, 1, 1);
-	}
-	pid = waitpid(pid, &pstat, 0);
-	if (pid == -1 || !WIFEXITED(pstat) || WEXITSTATUS(pstat) != 0)
-		return (0);
-	warnx("done");
-	return (1);
-}
-
-void
-pw_edit(int notsetuid)
-{
-	int pstat;
-	char *p, *editor;
-
-	if (!(editor = getenv("EDITOR")))
-		editor = _default_editor;
-	if ((p = strrchr(editor, '/')))
-		++p;
-	else
-		p = editor;
-
-	if (!(editpid = fork())) {
-		if (notsetuid) {
-			(void)setgid(getgid());
-			(void)setuid(getuid());
-		}
-		errno = 0;
-		execlp(editor, p, tempname, (char *)NULL);
-		_exit(errno);
-	}
-	for (;;) {
-		editpid = waitpid(editpid, (int *)&pstat, WUNTRACED);
-		errno = WEXITSTATUS(pstat);
-		if (editpid == -1)
-			pw_error(editor, 1, 1);
-		else if (WIFSTOPPED(pstat))
-			raise(WSTOPSIG(pstat));
-		else if (WIFEXITED(pstat) && errno == 0)
-			break;
-		else
-			pw_error(editor, 1, 1);
-	}
-	editpid = -1;
-}
-
-void
-pw_prompt(void)
-{
-	int c, first;
-
-	(void)printf("re-edit the password file? [y]: ");
-	(void)fflush(stdout);
-	first = c = getchar();
-	while (c != '\n' && c != EOF)
-		c = getchar();
-	if (first == 'n')
-		pw_error(NULL, 0, 0);
-}
-
-void
-pw_error(const char *name, int error, int eval)
-{
-	if (error) {
-		if (name != NULL)
-			warn("%s", name);
-		else
-			warn(NULL);
-	}
-	warnx("password information unchanged");
-	(void)unlink(tempname);
-	exit(eval);
-}
diff --git a/usr.sbin/vipw/pw_util.h b/usr.sbin/vipw/pw_util.h
deleted file mode 100644
index 1000a9a..0000000
--- a/usr.sbin/vipw/pw_util.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/*-
- * Copyright (c) 1994
- *	The Regents of the University of California.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- *	@(#)pw_util.h	8.2 (Berkeley) 4/1/94
- *
- * $FreeBSD$
- */
-
-void	pw_edit(int);
-void	pw_error(const char *, int, int);
-void	pw_init(void);
-int	pw_lock(void);
-int	pw_mkdb(const char *);
-void	pw_prompt(void);
-int	pw_tmp(void);
diff --git a/usr.sbin/vipw/vipw.c b/usr.sbin/vipw/vipw.c
index 6d84990..5914b62 100644
--- a/usr.sbin/vipw/vipw.c
+++ b/usr.sbin/vipw/vipw.c
@@ -1,6 +1,13 @@
 /*
  * Copyright (c) 1987, 1993, 1994
  *	The Regents of the University of California.  All rights reserved.
+ * Copyright (c) 2002 Networks Associates Technology, Inc.
+ * All rights reserved.
+ *
+ * Portions of this software were developed for the FreeBSD Project by
+ * ThinkSec AS and NAI Labs, the Security Research Division of Network
+ * Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
+ * ("CBOSS"), as part of the DARPA CHATS research program.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -55,37 +62,22 @@ static const char rcsid[] =
 #include <string.h>
 #include <unistd.h>
 
-#include "pw_util.h"
-
-extern char *mppath;
-extern char *masterpasswd;
-char *tempname;
+#include <libutil.h>		/* must be after pwd.h */
 
-static void	copyfile(int, int);
 static void	usage(void);
 
 int
 main(int argc, char *argv[])
 {
-	int pfd, tfd;
-	struct stat begin, end;
-	int ch;
+	const char *passwd_dir = NULL;
+	int ch, pfd, tfd;
+	char *line;
+	size_t len;
 
 	while ((ch = getopt(argc, argv, "d:")) != -1)
 		switch (ch) {
 		case 'd':
-			if ((masterpasswd = malloc(strlen(optarg) +
-			    strlen(_MASTERPASSWD) + 2)) == NULL)
-				err(1, NULL);
-			strcpy(masterpasswd, optarg);
-			if (masterpasswd[strlen(masterpasswd) - 1] != '/')
-				strcat(masterpasswd, "/" _MASTERPASSWD);
-			else
-				strcat(masterpasswd, _MASTERPASSWD);
-			if ((mppath = strdup(optarg)) == NULL)
-				err(1, NULL);
-			if (mppath[strlen(mppath) - 1] == '/')
-				mppath[strlen(mppath) - 1] = '\0';
+			passwd_dir = optarg;
 			break;
 		case '?':
 		default:
@@ -98,49 +90,52 @@ main(int argc, char *argv[])
 	if (argc != 0)
 		usage();
 
-	pw_init();
-	pfd = pw_lock();
-	tfd = pw_tmp();
-	copyfile(pfd, tfd);
+	if (pw_init(passwd_dir, NULL) == -1)
+		err(1, "pw_init()");
+	if ((pfd = pw_lock()) == -1) {
+		pw_fini();
+		err(1, "pw_lock()");
+	}
+	if ((tfd = pw_tmp(pfd)) == -1) {
+		pw_fini();
+		err(1, "pw_tmp()");
+	}
 	(void)close(tfd);
 	/* Force umask for partial writes made in the edit phase */
 	(void)umask(077);
 
 	for (;;) {
-		if (stat(tempname, &begin))
-			pw_error(tempname, 1, 1);
-		pw_edit(0);
-		if (stat(tempname, &end))
-			pw_error(tempname, 1, 1);
-		if (begin.st_mtime == end.st_mtime) {
-			warnx("no changes made");
-			pw_error((char *)NULL, 0, 0);
+		switch (pw_edit(NULL)) {
+		case -1:
+			pw_fini();
+			err(1, "pw_edit()");
+		case 0:
+			pw_fini();
+			errx(0, "no changes made");
+		default:
+			break;
+		}
+		if (pw_mkdb(NULL) == 0) {
+			pw_fini();
+			errx(0, "password list updated");
 		}
-		if (pw_mkdb((char *)NULL))
+		printf("re-edit the password file? ");
+		fflush(stdout);
+		if ((line = fgetln(stdin, &len)) == NULL) {
+			pw_fini();
+			err(1, "fgetln()");
+		}
+		if (len > 0 && (*line == 'N' || *line == 'n'))
 			break;
-		pw_prompt();
 	}
+	pw_fini();
 	exit(0);
 }
 
 static void
-copyfile(int from, int to)
-{
-	int nr, nw, off;
-	char buf[8*1024];
-
-	while ((nr = read(from, buf, sizeof(buf))) > 0)
-		for (off = 0; off < nr; nr -= nw, off += nw)
-			if ((nw = write(to, buf + off, nr)) < 0)
-				pw_error(tempname, 1, 1);
-	if (nr < 0)
-		pw_error(masterpasswd, 1, 1);
-}
-
-static void
 usage(void)
 {
 
-	(void)fprintf(stderr, "usage: vipw [ -d directory ]\n");
+	(void)fprintf(stderr, "usage: vipw [-d directory]\n");
 	exit(1);
 }