Teach pw(8) about how to use pw/gr API to reduce code duplication

MFC after:	2 months

13 files changed, 1888 insertions, 88 deletions

diff --git a/pw/Makefile b/pw/Makefile
new file mode 100644
index 0000000..eae0b87
--- /dev/null
+++ b/pw/Makefile
@@ -0,0 +1,14 @@
+# $FreeBSD$
+
+PROG=	pw
+MAN=	pw.conf.5 pw.8
+SRCS=	pw.c pw_conf.c pw_user.c pw_group.c pw_log.c pw_nis.c pw_vpw.c \
+	grupd.c pwupd.c fileupd.c psdate.c \
+	bitmap.c cpdir.c rm_r.c
+
+WARNS?=	2
+
+DPADD=	${LIBCRYPT} ${LIBUTIL}
+LDADD=	-lcrypt -lutil
+
+.include <bsd.prog.mk>
diff --git a/pw/fileupd.c b/pw/fileupd.c
new file mode 100644
index 0000000..7df4bb1
--- /dev/null
+++ b/pw/fileupd.c
@@ -0,0 +1,68 @@
+/*-
+ * Copyright (C) 1996
+ *	David L. Nugent.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static const char rcsid[] =
+  "$FreeBSD$";
+#endif /* not lint */
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include "pwupd.h"
+
+int
+extendline(char **buf, int * buflen, int needed)
+{
+	if (needed > *buflen) {
+		char	*tmp = realloc(*buf, needed);
+		if (tmp == NULL)
+			return -1;
+		*buf = tmp;
+		*buflen = needed;
+	}
+	return *buflen;
+}
+
+int
+extendarray(char ***buf, int * buflen, int needed)
+{
+	if (needed > *buflen) {
+		char	**tmp = realloc(*buf, needed * sizeof(char *));
+		if (tmp == NULL)
+			return -1;
+		*buf = tmp;
+		*buflen = needed;
+	}
+	return *buflen;
+}
diff --git a/pw/grupd.c b/pw/grupd.c
new file mode 100644
index 0000000..e9f6b5e
--- /dev/null
+++ b/pw/grupd.c
@@ -0,0 +1,129 @@
+/*-
+ * Copyright (C) 1996
+ *	David L. Nugent.  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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT 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 DAVID L. NUGENT 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
+static const char rcsid[] =
+  "$FreeBSD$";
+#endif /* not lint */
+
+#include <grp.h>
+#include <libutil.h>
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+
+#include "pwupd.h"
+
+static char * grpath = _PATH_PWD;
+
+int
+setgrdir(const char * dir)
+{
+	if (dir == NULL)
+		return -1;
+	else {
+		char * d = malloc(strlen(dir)+1);
+		if (d == NULL)
+			return -1;
+		grpath = strcpy(d, dir);
+	}
+	return 0;
+}
+
+char *
+getgrpath(const char * file)
+{
+	static char pathbuf[MAXPATHLEN];
+
+	snprintf(pathbuf, sizeof pathbuf, "%s/%s", grpath, file);
+	return pathbuf;
+}
+
+static int
+gr_update(struct group * grp, char const * group)
+{
+	int pfd, tfd;
+	struct group *gr = NULL;
+	struct group *old_gr = NULL;
+
+	if (grp != NULL)
+		gr = gr_dup(grp);
+
+	if (group != NULL)
+		old_gr = GETGRNAM(group);
+
+	if (gr_init(grpath, NULL))
+		err(1, "gr_init()");
+
+	if ((pfd = gr_lock()) == -1) {
+		gr_fini();
+		err(1, "gr_lock()");
+	}
+	if ((tfd = gr_tmp(-1)) == -1) {
+		gr_fini();
+		err(1, "gr_tmp()");
+	}
+	if (gr_copy(pfd, tfd, gr, old_gr) == -1) {
+		gr_fini();
+		err(1, "gr_copy()");
+	}
+	if (gr_mkdb() == -1) {
+		gr_fini();
+		err(1, "gr_mkdb()");
+	}
+	free(gr);
+	gr_fini();
+	return 0;
+}
+
+
+int
+addgrent(struct group * grp)
+{
+	return gr_update(grp, NULL);
+}
+
+int
+chggrent(char const * login, struct group * grp)
+{
+	return gr_update(grp, login);
+}
+
+int
+delgrent(struct group * grp)
+{
+	char group[MAXLOGNAME];
+
+	strlcpy(group, grp->gr_name, MAXLOGNAME);
+
+	return gr_update(NULL, group);
+}
diff --git a/pw/pw.8 b/pw/pw.8
index 8b21107..076f2eb 100644
--- a/pw/pw.8
+++ b/pw/pw.8
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd December 21, 2011
+.Dd October 29, 2012
 .Dt PW 8
 .Os
 .Sh NAME
@@ -904,12 +904,6 @@ A Version 7 format password file
 The user capabilities database
 .It Pa /etc/group
 The group database
-.It Pa /etc/master.passwd.new
-Temporary copy of the master password file
-.It Pa /etc/passwd.new
-Temporary copy of the Version 7 password file
-.It Pa /etc/group.new
-Temporary copy of the group file
 .It Pa /etc/pw.conf
 Pw default options file
 .It Pa /var/log/userlog
diff --git a/pw/pw.c b/pw/pw.c
new file mode 100644
index 0000000..b0ac728
--- /dev/null
+++ b/pw/pw.c
@@ -0,0 +1,452 @@
+/*-
+ * Copyright (C) 1996
+ *	David L. Nugent.  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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT 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 DAVID L. NUGENT 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
+static const char rcsid[] =
+  "$FreeBSD$";
+#endif /* not lint */
+
+#include <err.h>
+#include <fcntl.h>
+#include <locale.h>
+#include <paths.h>
+#include <sys/wait.h>
+#include "pw.h"
+
+#if !defined(_PATH_YP)
+#define	_PATH_YP	"/var/yp/"
+#endif
+const char     *Modes[] = {
+  "add", "del", "mod", "show", "next",
+  NULL};
+const char     *Which[] = {"user", "group", NULL};
+static const char *Combo1[] = {
+  "useradd", "userdel", "usermod", "usershow", "usernext",
+  "lock", "unlock",
+  "groupadd", "groupdel", "groupmod", "groupshow", "groupnext",
+  NULL};
+static const char *Combo2[] = {
+  "adduser", "deluser", "moduser", "showuser", "nextuser",
+  "lock", "unlock",
+  "addgroup", "delgroup", "modgroup", "showgroup", "nextgroup",
+  NULL};
+
+struct pwf PWF =
+{
+	0,
+	setpwent,
+	endpwent,
+	getpwent,
+	getpwuid,
+	getpwnam,
+	setgrent,
+	endgrent,
+	getgrent,
+	getgrgid,
+	getgrnam,
+
+};
+struct pwf VPWF =
+{
+	1,
+	vsetpwent,
+	vendpwent,
+	vgetpwent,
+	vgetpwuid,
+	vgetpwnam,
+	vsetgrent,
+	vendgrent,
+	vgetgrent,
+	vgetgrgid,
+	vgetgrnam,
+};
+
+static struct cargs arglist;
+
+static int      getindex(const char *words[], const char *word);
+static void     cmdhelp(int mode, int which);
+
+
+int
+main(int argc, char *argv[])
+{
+	int             ch;
+	int             mode = -1;
+	int             which = -1;
+	char		*config = NULL;
+	struct userconf *cnf;
+
+	static const char *opts[W_NUM][M_NUM] =
+	{
+		{ /* user */
+			"V:C:qn:u:c:d:e:p:g:G:mM:k:s:oL:i:w:h:H:Db:NPy:Y",
+			"V:C:qn:u:rY",
+			"V:C:qn:u:c:d:e:p:g:G:mM:l:k:s:w:L:h:H:FNPY",
+			"V:C:qn:u:FPa7",
+			"V:C:q",
+			"V:C:q",
+			"V:C:q"
+		},
+		{ /* grp  */
+			"V:C:qn:g:h:H:M:opNPY",
+			"V:C:qn:g:Y",
+			"V:C:qn:d:g:l:h:H:FM:m:NPY",
+			"V:C:qn:g:FPa",
+			"V:C:q"
+		 }
+	};
+
+	static int      (*funcs[W_NUM]) (struct userconf * _cnf, int _mode, struct cargs * _args) =
+	{			/* Request handlers */
+		pw_user,
+		pw_group
+	};
+
+	LIST_INIT(&arglist);
+
+	(void)setlocale(LC_ALL, "");
+
+	/*
+	 * Break off the first couple of words to determine what exactly
+	 * we're being asked to do
+	 */
+	while (argc > 1) {
+		int             tmp;
+
+		if (*argv[1] == '-') {
+			/*
+			 * Special case, allow pw -V<dir> <operation> [args] for scripts etc.
+			 */
+			if (argv[1][1] == 'V') {
+				optarg = &argv[1][2];
+				if (*optarg == '\0') {
+					optarg = argv[2];
+					++argv;
+					--argc;
+				}
+				addarg(&arglist, 'V', optarg);
+			} else
+				break;
+		}
+		else if (mode == -1 && (tmp = getindex(Modes, argv[1])) != -1)
+			mode = tmp;
+		else if (which == -1 && (tmp = getindex(Which, argv[1])) != -1)
+			which = tmp;
+		else if ((mode == -1 && which == -1) &&
+			 ((tmp = getindex(Combo1, argv[1])) != -1 ||
+			  (tmp = getindex(Combo2, argv[1])) != -1)) {
+			which = tmp / M_NUM;
+			mode = tmp % M_NUM;
+		} else if (strcmp(argv[1], "help") == 0 && argv[2] == NULL)
+			cmdhelp(mode, which);
+		else if (which != -1 && mode != -1)
+			addarg(&arglist, 'n', argv[1]);
+		else
+			errx(EX_USAGE, "unknown keyword `%s'", argv[1]);
+		++argv;
+		--argc;
+	}
+
+	/*
+	 * Bail out unless the user is specific!
+	 */
+	if (mode == -1 || which == -1)
+		cmdhelp(mode, which);
+
+	/*
+	 * We know which mode we're in and what we're about to do, so now
+	 * let's dispatch the remaining command line args in a genric way.
+	 */
+	optarg = NULL;
+
+	while ((ch = getopt(argc, argv, opts[which][mode])) != -1) {
+		if (ch == '?')
+			errx(EX_USAGE, "unknown switch");
+		else
+			addarg(&arglist, ch, optarg);
+		optarg = NULL;
+	}
+
+	/*
+	 * Must be root to attempt an update
+	 */
+	if (geteuid() != 0 && mode != M_PRINT && mode != M_NEXT && getarg(&arglist, 'N')==NULL)
+		errx(EX_NOPERM, "you must be root to run this program");
+
+	/*
+	 * We should immediately look for the -q 'quiet' switch so that we
+	 * don't bother with extraneous errors
+	 */
+	if (getarg(&arglist, 'q') != NULL)
+		freopen(_PATH_DEVNULL, "w", stderr);
+
+	/*
+	 * Set our base working path if not overridden
+	 */
+
+	config = getarg(&arglist, 'C') ? getarg(&arglist, 'C')->val : NULL;
+
+	if (getarg(&arglist, 'V') != NULL) {
+		char * etcpath = getarg(&arglist, 'V')->val;
+		if (*etcpath) {
+			if (config == NULL) {	/* Only override config location if -C not specified */
+				config = malloc(MAXPATHLEN);
+				snprintf(config, MAXPATHLEN, "%s/pw.conf", etcpath);
+			}
+			memcpy(&PWF, &VPWF, sizeof PWF);
+			setpwdir(etcpath);
+			setgrdir(etcpath);
+		}
+	}
+
+	/*
+	 * Now, let's do the common initialisation
+	 */
+	cnf = read_userconfig(config);
+
+	ch = funcs[which] (cnf, mode, &arglist);
+
+	/*
+	 * If everything went ok, and we've been asked to update
+	 * the NIS maps, then do it now
+	 */
+	if (ch == EXIT_SUCCESS && getarg(&arglist, 'Y') != NULL) {
+		pid_t	pid;
+
+		fflush(NULL);
+		if (chdir(_PATH_YP) == -1)
+			warn("chdir(" _PATH_YP ")");
+		else if ((pid = fork()) == -1)
+			warn("fork()");
+		else if (pid == 0) {
+			/* Is make anywhere else? */
+			execlp("/usr/bin/make", "make", (char *)NULL);
+			_exit(1);
+		} else {
+			int   i;
+			waitpid(pid, &i, 0);
+			if ((i = WEXITSTATUS(i)) != 0)
+				errx(ch, "make exited with status %d", i);
+			else
+				pw_log(cnf, mode, which, "NIS maps updated");
+		}
+	}
+	return ch;
+}
+
+
+static int
+getindex(const char *words[], const char *word)
+{
+	int             i = 0;
+
+	while (words[i]) {
+		if (strcmp(words[i], word) == 0)
+			return i;
+		i++;
+	}
+	return -1;
+}
+
+
+/*
+ * This is probably an overkill for a cmdline help system, but it reflects
+ * the complexity of the command line.
+ */
+
+static void
+cmdhelp(int mode, int which)
+{
+	if (which == -1)
+		fprintf(stderr, "usage:\n  pw [user|group|lock|unlock] [add|del|mod|show|next] [help|switches/values]\n");
+	else if (mode == -1)
+		fprintf(stderr, "usage:\n  pw %s [add|del|mod|show|next] [help|switches/values]\n", Which[which]);
+	else {
+
+		/*
+		 * We need to give mode specific help
+		 */
+		static const char *help[W_NUM][M_NUM] =
+		{
+			{
+				"usage: pw useradd [name] [switches]\n"
+				"\t-V etcdir      alternate /etc location\n"
+				"\t-C config      configuration file\n"
+				"\t-q             quiet operation\n"
+				"  Adding users:\n"
+				"\t-n name        login name\n"
+				"\t-u uid         user id\n"
+				"\t-c comment     user name/comment\n"
+				"\t-d directory   home directory\n"
+				"\t-e date        account expiry date\n"
+				"\t-p date        password expiry date\n"
+				"\t-g grp         initial group\n"
+				"\t-G grp1,grp2   additional groups\n"
+				"\t-m [ -k dir ]  create and set up home\n"
+				"\t-M mode        home directory permissions\n"
+				"\t-s shell       name of login shell\n"
+				"\t-o             duplicate uid ok\n"
+				"\t-L class       user class\n"
+				"\t-h fd          read password on fd\n"
+				"\t-H fd          read encrypted password on fd\n"
+				"\t-Y             update NIS maps\n"
+				"\t-N             no update\n"
+				"  Setting defaults:\n"
+				"\t-V etcdir      alternate /etc location\n"
+			        "\t-D             set user defaults\n"
+				"\t-b dir         default home root dir\n"
+				"\t-e period      default expiry period\n"
+				"\t-p period      default password change period\n"
+				"\t-g group       default group\n"
+				"\t-G grp1,grp2   additional groups\n"
+				"\t-L class       default user class\n"
+				"\t-k dir         default home skeleton\n"
+				"\t-M mode        home directory permissions\n"
+				"\t-u min,max     set min,max uids\n"
+				"\t-i min,max     set min,max gids\n"
+				"\t-w method      set default password method\n"
+				"\t-s shell       default shell\n"
+				"\t-y path        set NIS passwd file path\n",
+				"usage: pw userdel [uid|name] [switches]\n"
+				"\t-V etcdir      alternate /etc location\n"
+				"\t-n name        login name\n"
+				"\t-u uid         user id\n"
+				"\t-Y             update NIS maps\n"
+				"\t-r             remove home & contents\n",
+				"usage: pw usermod [uid|name] [switches]\n"
+				"\t-V etcdir      alternate /etc location\n"
+				"\t-C config      configuration file\n"
+				"\t-q             quiet operation\n"
+				"\t-F             force add if no user\n"
+				"\t-n name        login name\n"
+				"\t-u uid         user id\n"
+				"\t-c comment     user name/comment\n"
+				"\t-d directory   home directory\n"
+				"\t-e date        account expiry date\n"
+				"\t-p date        password expiry date\n"
+				"\t-g grp         initial group\n"
+				"\t-G grp1,grp2   additional groups\n"
+				"\t-l name        new login name\n"
+				"\t-L class       user class\n"
+				"\t-m [ -k dir ]  create and set up home\n"
+				"\t-M mode        home directory permissions\n"
+				"\t-s shell       name of login shell\n"
+				"\t-w method      set new password using method\n"
+				"\t-h fd          read password on fd\n"
+				"\t-H fd          read encrypted password on fd\n"
+				"\t-Y             update NIS maps\n"
+				"\t-N             no update\n",
+				"usage: pw usershow [uid|name] [switches]\n"
+				"\t-V etcdir      alternate /etc location\n"
+				"\t-n name        login name\n"
+				"\t-u uid         user id\n"
+				"\t-F             force print\n"
+				"\t-P             prettier format\n"
+				"\t-a             print all users\n"
+				"\t-7             print in v7 format\n",
+				"usage: pw usernext [switches]\n"
+				"\t-V etcdir      alternate /etc location\n"
+				"\t-C config      configuration file\n"
+				"\t-q             quiet operation\n",
+				"usage pw: lock [switches]\n"
+				"\t-V etcdir      alternate /etc locations\n"
+				"\t-C config      configuration file\n"
+				"\t-q             quiet operation\n",
+				"usage pw: unlock [switches]\n"
+				"\t-V etcdir      alternate /etc locations\n"
+				"\t-C config      configuration file\n"
+				"\t-q             quiet operation\n"
+			},
+			{
+				"usage: pw groupadd [group|gid] [switches]\n"
+				"\t-V etcdir      alternate /etc location\n"
+				"\t-C config      configuration file\n"
+				"\t-q             quiet operation\n"
+				"\t-n group       group name\n"
+				"\t-g gid         group id\n"
+				"\t-M usr1,usr2   add users as group members\n"
+				"\t-o             duplicate gid ok\n"
+				"\t-Y             update NIS maps\n"
+				"\t-N             no update\n",
+				"usage: pw groupdel [group|gid] [switches]\n"
+				"\t-V etcdir      alternate /etc location\n"
+				"\t-n name        group name\n"
+				"\t-g gid         group id\n"
+				"\t-Y             update NIS maps\n",
+				"usage: pw groupmod [group|gid] [switches]\n"
+				"\t-V etcdir      alternate /etc location\n"
+				"\t-C config      configuration file\n"
+				"\t-q             quiet operation\n"
+				"\t-F             force add if not exists\n"
+				"\t-n name        group name\n"
+				"\t-g gid         group id\n"
+				"\t-M usr1,usr2   replaces users as group members\n"
+				"\t-m usr1,usr2   add users as group members\n"
+				"\t-d usr1,usr2   delete users as group members\n"
+				"\t-l name        new group name\n"
+				"\t-Y             update NIS maps\n"
+				"\t-N             no update\n",
+				"usage: pw groupshow [group|gid] [switches]\n"
+				"\t-V etcdir      alternate /etc location\n"
+				"\t-n name        group name\n"
+				"\t-g gid         group id\n"
+				"\t-F             force print\n"
+				"\t-P             prettier format\n"
+				"\t-a             print all accounting groups\n",
+				"usage: pw groupnext [switches]\n"
+				"\t-V etcdir      alternate /etc location\n"
+				"\t-C config      configuration file\n"
+				"\t-q             quiet operation\n"
+			}
+		};
+
+		fprintf(stderr, "%s", help[which][mode]);
+	}
+	exit(EXIT_FAILURE);
+}
+
+struct carg    *
+getarg(struct cargs * _args, int ch)
+{
+	struct carg    *c = LIST_FIRST(_args);
+
+	while (c != NULL && c->ch != ch)
+		c = LIST_NEXT(c, list);
+	return c;
+}
+
+struct carg    *
+addarg(struct cargs * _args, int ch, char *argstr)
+{
+	struct carg    *ca = malloc(sizeof(struct carg));
+
+	if (ca == NULL)
+		errx(EX_OSERR, "out of memory");
+	ca->ch = ch;
+	ca->val = argstr;
+	LIST_INSERT_HEAD(_args, ca, list);
+	return ca;
+}
diff --git a/pw/pw.h b/pw/pw.h
new file mode 100644
index 0000000..1ff69a6
--- /dev/null
+++ b/pw/pw.h
@@ -0,0 +1,124 @@
+/*-
+ * Copyright (C) 1996
+ *	David L. Nugent.  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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT 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 DAVID L. NUGENT 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <pwd.h>
+#include <grp.h>
+#include <sys/queue.h>
+#include <sysexits.h>
+
+#include "psdate.h"
+#include "pwupd.h"
+
+enum _mode
+{
+        M_ADD,
+        M_DELETE,
+        M_UPDATE,
+        M_PRINT,
+	M_NEXT,
+	M_LOCK,
+	M_UNLOCK,
+        M_NUM
+};
+
+enum _which
+{
+        W_USER,
+        W_GROUP,
+        W_NUM
+};
+
+struct carg
+{
+	int		  ch;
+	char		  *val;
+	LIST_ENTRY(carg)  list;
+};
+
+LIST_HEAD(cargs, carg);
+
+struct userconf
+{
+	int	default_password;	/* Default password for new users? */
+	int	reuse_uids;		/* Reuse uids? */
+	int	reuse_gids;		/* Reuse gids? */
+	char	*nispasswd;		/* Path to NIS version of the passwd file */
+	char	*dotdir;		/* Where to obtain skeleton files */
+	char	*newmail;		/* Mail to send to new accounts */
+	char	*logfile;		/* Where to log changes */
+	char	*home;			/* Where to create home directory */
+	mode_t	homemode;		/* Home directory permissions */
+	char	*shelldir;		/* Where shells are located */
+	char	**shells;		/* List of shells */
+	char	*shell_default;		/* Default shell */
+	char	*default_group;		/* Default group number */
+	char	**groups;		/* Default (additional) groups */
+	char	*default_class;		/* Default user class */
+	uid_t	min_uid, max_uid;	/* Allowed range of uids */
+	gid_t	min_gid, max_gid;	/* Allowed range of gids */
+	int	expire_days;		/* Days to expiry */
+	int	password_days;		/* Days to password expiry */
+	int	numgroups;		/* (internal) size of default_group array */
+};
+
+#define	_DEF_DIRMODE	(S_IRWXU | S_IRWXG | S_IRWXO)
+#define _PATH_PW_CONF	"/etc/pw.conf"
+#define _UC_MAXLINE	1024
+#define _UC_MAXSHELLS	32
+
+struct userconf *read_userconfig(char const * file);
+int write_userconfig(char const * file);
+struct carg *addarg(struct cargs * _args, int ch, char *argstr);
+struct carg *getarg(struct cargs * _args, int ch);
+
+int pw_user(struct userconf * cnf, int mode, struct cargs * _args);
+int pw_group(struct userconf * cnf, int mode, struct cargs * _args);
+char    *pw_checkname(u_char *name, int gecos);
+
+int addnispwent(const char *path, struct passwd *pwd);
+int delnispwent(const char *path, const char *login);
+int chgnispwent(const char *path, const char *login, struct passwd *pwd);
+
+int boolean_val(char const * str, int dflt);
+char const *boolean_str(int val);
+char *newstr(char const * p);
+
+void pw_log(struct userconf * cnf, int mode, int which, char const * fmt,...) __printflike(4, 5);
+char *pw_pwcrypt(char *password);
+
+extern const char *Modes[];
+extern const char *Which[];
diff --git a/pw/pw_group.c b/pw/pw_group.c
new file mode 100644
index 0000000..f4f2116
--- /dev/null
+++ b/pw/pw_group.c
@@ -0,0 +1,424 @@
+/*-
+ * Copyright (C) 1996
+ *	David L. Nugent.  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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT 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 DAVID L. NUGENT 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
+static const char rcsid[] =
+  "$FreeBSD$";
+#endif /* not lint */
+
+#include <ctype.h>
+#include <err.h>
+#include <termios.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <grp.h>
+#include <libutil.h>
+
+#include "pw.h"
+#include "bitmap.h"
+
+
+static struct passwd *lookup_pwent(const char *user);
+static void	delete_members(char ***members, int *grmembers, int *i,
+    struct carg *arg, struct group *grp);
+static int      print_group(struct group * grp, int pretty);
+static gid_t    gr_gidpolicy(struct userconf * cnf, struct cargs * args);
+
+int
+pw_group(struct userconf * cnf, int mode, struct cargs * args)
+{
+	int		rc;
+	struct carg    *a_name = getarg(args, 'n');
+	struct carg    *a_gid = getarg(args, 'g');
+	struct carg    *arg;
+	struct group   *grp = NULL;
+	int	        grmembers = 0;
+	char           **members = NULL;
+
+	static struct group fakegroup =
+	{
+		"nogroup",
+		"*",
+		-1,
+		NULL
+	};
+
+	if (mode == M_LOCK || mode == M_UNLOCK)
+		errx(EX_USAGE, "'lock' command is not available for groups");
+
+	/*
+	 * With M_NEXT, we only need to return the
+	 * next gid to stdout
+	 */
+	if (mode == M_NEXT) {
+		gid_t next = gr_gidpolicy(cnf, args);
+		if (getarg(args, 'q'))
+			return next;
+		printf("%ld\n", (long)next);
+		return EXIT_SUCCESS;
+	}
+
+	if (mode == M_PRINT && getarg(args, 'a')) {
+		int             pretty = getarg(args, 'P') != NULL;
+
+		SETGRENT();
+		while ((grp = GETGRENT()) != NULL)
+			print_group(grp, pretty);
+		ENDGRENT();
+		return EXIT_SUCCESS;
+	}
+	if (a_gid == NULL) {
+		if (a_name == NULL)
+			errx(EX_DATAERR, "group name or id required");
+
+		if (mode != M_ADD && grp == NULL && isdigit((unsigned char)*a_name->val)) {
+			(a_gid = a_name)->ch = 'g';
+			a_name = NULL;
+		}
+	}
+	grp = (a_name != NULL) ? GETGRNAM(a_name->val) : GETGRGID((gid_t) atoi(a_gid->val));
+
+	if (mode == M_UPDATE || mode == M_DELETE || mode == M_PRINT) {
+		if (a_name == NULL && grp == NULL)	/* Try harder */
+			grp = GETGRGID(atoi(a_gid->val));
+
+		if (grp == NULL) {
+			if (mode == M_PRINT && getarg(args, 'F')) {
+				char	*fmems[1];
+				fmems[0] = NULL;
+				fakegroup.gr_name = a_name ? a_name->val : "nogroup";
+				fakegroup.gr_gid = a_gid ? (gid_t) atol(a_gid->val) : -1;
+				fakegroup.gr_mem = fmems;
+				return print_group(&fakegroup, getarg(args, 'P') != NULL);
+			}
+			errx(EX_DATAERR, "unknown group `%s'", a_name ? a_name->val : a_gid->val);
+		}
+		if (a_name == NULL)	/* Needed later */
+			a_name = addarg(args, 'n', grp->gr_name);
+
+		/*
+		 * Handle deletions now
+		 */
+		if (mode == M_DELETE) {
+			gid_t           gid = grp->gr_gid;
+
+			rc = delgrent(grp);
+			if (rc == -1)
+				err(EX_IOERR, "group '%s' not available (NIS?)", grp->gr_name);
+			else if (rc != 0) {
+				warn("group update");
+				return EX_IOERR;
+			}
+			pw_log(cnf, mode, W_GROUP, "%s(%ld) removed", a_name->val, (long) gid);
+			return EXIT_SUCCESS;
+		} else if (mode == M_PRINT)
+			return print_group(grp, getarg(args, 'P') != NULL);
+
+		if (a_gid)
+			grp->gr_gid = (gid_t) atoi(a_gid->val);
+
+		if ((arg = getarg(args, 'l')) != NULL)
+			grp->gr_name = pw_checkname((u_char *)arg->val, 0);
+	} else {
+		if (a_name == NULL)	/* Required */
+			errx(EX_DATAERR, "group name required");
+		else if (grp != NULL)	/* Exists */
+			errx(EX_DATAERR, "group name `%s' already exists", a_name->val);
+
+		extendarray(&members, &grmembers, 200);
+		members[0] = NULL;
+		grp = &fakegroup;
+		grp->gr_name = pw_checkname((u_char *)a_name->val, 0);
+		grp->gr_passwd = "*";
+		grp->gr_gid = gr_gidpolicy(cnf, args);
+		grp->gr_mem = members;
+	}
+
+	/*
+	 * This allows us to set a group password Group passwords is an
+	 * antique idea, rarely used and insecure (no secure database) Should
+	 * be discouraged, but it is apparently still supported by some
+	 * software.
+	 */
+
+	if ((arg = getarg(args, 'h')) != NULL ||
+	    (arg = getarg(args, 'H')) != NULL) {
+		if (strcmp(arg->val, "-") == 0)
+			grp->gr_passwd = "*";	/* No access */
+		else {
+			int             fd = atoi(arg->val);
+			int		precrypt = (arg->ch == 'H');
+			int             b;
+			int             istty = isatty(fd);
+			struct termios  t;
+			char           *p, line[256];
+
+			if (istty) {
+				if (tcgetattr(fd, &t) == -1)
+					istty = 0;
+				else {
+					struct termios  n = t;
+
+					/* Disable echo */
+					n.c_lflag &= ~(ECHO);
+					tcsetattr(fd, TCSANOW, &n);
+					printf("%sassword for group %s:", (mode == M_UPDATE) ? "New p" : "P", grp->gr_name);
+					fflush(stdout);
+				}
+			}
+			b = read(fd, line, sizeof(line) - 1);
+			if (istty) {	/* Restore state */
+				tcsetattr(fd, TCSANOW, &t);
+				fputc('\n', stdout);
+				fflush(stdout);
+			}
+			if (b < 0) {
+				warn("-h file descriptor");
+				return EX_OSERR;
+			}
+			line[b] = '\0';
+			if ((p = strpbrk(line, " \t\r\n")) != NULL)
+				*p = '\0';
+			if (!*line)
+				errx(EX_DATAERR, "empty password read on file descriptor %d", fd);
+			if (precrypt) {
+				if (strchr(line, ':') != NULL)
+					return EX_DATAERR;
+				grp->gr_passwd = line;
+			} else
+				grp->gr_passwd = pw_pwcrypt(line);
+		}
+	}
+
+	if (((arg = getarg(args, 'M')) != NULL ||
+	    (arg = getarg(args, 'd')) != NULL ||
+	    (arg = getarg(args, 'm')) != NULL) && arg->val) {
+		int	i = 0;
+		char   *p;
+		struct passwd	*pwd;
+
+		/* Make sure this is not stay NULL with -M "" */
+		extendarray(&members, &grmembers, 200);
+		if (arg->ch == 'd')
+			delete_members(&members, &grmembers, &i, arg, grp);
+		else if (arg->ch == 'm') {
+			int	k = 0;
+
+			while (grp->gr_mem[k] != NULL) {
+				if (extendarray(&members, &grmembers, i + 2) != -1)
+					members[i++] = grp->gr_mem[k];
+				k++;
+			}
+		}
+
+		if (arg->ch != 'd')
+			for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) {
+				int	j;
+
+				/*
+				 * Check for duplicates
+				 */
+				pwd = lookup_pwent(p);
+				for (j = 0; j < i && strcmp(members[j], pwd->pw_name) != 0; j++)
+					;
+				if (j == i && extendarray(&members, &grmembers, i + 2) != -1)
+					members[i++] = newstr(pwd->pw_name);
+			}
+		while (i < grmembers)
+			members[i++] = NULL;
+		grp->gr_mem = members;
+	}
+
+	if (getarg(args, 'N') != NULL)
+		return print_group(grp, getarg(args, 'P') != NULL);
+
+	if (mode == M_ADD && (rc = addgrent(grp)) != 0) {
+		if (rc == -1)
+			warnx("group '%s' already exists", grp->gr_name);
+		else
+			warn("group update");
+		return EX_IOERR;
+	} else if (mode == M_UPDATE && (rc = chggrent(a_name->val, grp)) != 0) {
+		if (rc == -1)
+			warnx("group '%s' not available (NIS?)", grp->gr_name);
+		else
+			warn("group update");
+		return EX_IOERR;
+	}
+	/* grp may have been invalidated */
+	if ((grp = GETGRNAM(a_name->val)) == NULL)
+		errx(EX_SOFTWARE, "group disappeared during update");
+
+	pw_log(cnf, mode, W_GROUP, "%s(%ld)", grp->gr_name, (long) grp->gr_gid);
+
+	if (members)
+		free(members);
+
+	return EXIT_SUCCESS;
+}
+
+
+/*
+ * Lookup a passwd entry using a name or UID.
+ */
+static struct passwd *
+lookup_pwent(const char *user)
+{
+	struct passwd *pwd;
+
+	if ((pwd = GETPWNAM(user)) == NULL &&
+	    (!isdigit((unsigned char)*user) ||
+	    (pwd = getpwuid((uid_t) atoi(user))) == NULL))
+		errx(EX_NOUSER, "user `%s' does not exist", user);
+
+	return (pwd);
+}
+
+
+/*
+ * Delete requested members from a group.
+ */
+static void
+delete_members(char ***members, int *grmembers, int *i, struct carg *arg,
+    struct group *grp)
+{
+	bool matchFound;
+	char *user;
+	char *valueCopy;
+	char *valuePtr;
+	int k;
+	struct passwd *pwd;
+
+	k = 0;
+	while (grp->gr_mem[k] != NULL) {
+		matchFound = false;
+		if ((valueCopy = strdup(arg->val)) == NULL)
+			errx(EX_UNAVAILABLE, "out of memory");
+		valuePtr = valueCopy;
+		while ((user = strsep(&valuePtr, ", \t")) != NULL) {
+			pwd = lookup_pwent(user);
+			if (strcmp(grp->gr_mem[k], pwd->pw_name) == 0) {
+				matchFound = true;
+				break;
+			}
+		}
+		free(valueCopy);
+
+		if (!matchFound &&
+		    extendarray(members, grmembers, *i + 2) != -1)
+			(*members)[(*i)++] = grp->gr_mem[k];
+
+		k++;
+	}
+
+	return;
+}
+
+
+static          gid_t
+gr_gidpolicy(struct userconf * cnf, struct cargs * args)
+{
+	struct group   *grp;
+	gid_t           gid = (gid_t) - 1;
+	struct carg    *a_gid = getarg(args, 'g');
+
+	/*
+	 * Check the given gid, if any
+	 */
+	if (a_gid != NULL) {
+		gid = (gid_t) atol(a_gid->val);
+
+		if ((grp = GETGRGID(gid)) != NULL && getarg(args, 'o') == NULL)
+			errx(EX_DATAERR, "gid `%ld' has already been allocated", (long) grp->gr_gid);
+	} else {
+		struct bitmap   bm;
+
+		/*
+		 * We need to allocate the next available gid under one of
+		 * two policies a) Grab the first unused gid b) Grab the
+		 * highest possible unused gid
+		 */
+		if (cnf->min_gid >= cnf->max_gid) {	/* Sanity claus^H^H^H^Hheck */
+			cnf->min_gid = 1000;
+			cnf->max_gid = 32000;
+		}
+		bm = bm_alloc(cnf->max_gid - cnf->min_gid + 1);
+
+		/*
+		 * Now, let's fill the bitmap from the password file
+		 */
+		SETGRENT();
+		while ((grp = GETGRENT()) != NULL)
+			if ((gid_t)grp->gr_gid >= (gid_t)cnf->min_gid &&
+                            (gid_t)grp->gr_gid <= (gid_t)cnf->max_gid)
+				bm_setbit(&bm, grp->gr_gid - cnf->min_gid);
+		ENDGRENT();
+
+		/*
+		 * Then apply the policy, with fallback to reuse if necessary
+		 */
+		if (cnf->reuse_gids)
+			gid = (gid_t) (bm_firstunset(&bm) + cnf->min_gid);
+		else {
+			gid = (gid_t) (bm_lastset(&bm) + 1);
+			if (!bm_isset(&bm, gid))
+				gid += cnf->min_gid;
+			else
+				gid = (gid_t) (bm_firstunset(&bm) + cnf->min_gid);
+		}
+
+		/*
+		 * Another sanity check
+		 */
+		if (gid < cnf->min_gid || gid > cnf->max_gid)
+			errx(EX_SOFTWARE, "unable to allocate a new gid - range fully used");
+		bm_dealloc(&bm);
+	}
+	return gid;
+}
+
+
+static int
+print_group(struct group * grp, int pretty)
+{
+	if (!pretty) {
+		char           *buf = NULL;
+
+		buf = gr_make(grp);
+		fputs(buf, stdout);
+		free(buf);
+	} else {
+		int             i;
+
+		printf("Group Name: %-15s   #%lu\n"
+		       "   Members: ",
+		       grp->gr_name, (long) grp->gr_gid);
+		for (i = 0; grp->gr_mem[i]; i++)
+			printf("%s%s", i ? "," : "", grp->gr_mem[i]);
+		fputs("\n\n", stdout);
+	}
+	return EXIT_SUCCESS;
+}
diff --git a/pw/pw_log.c b/pw/pw_log.c
new file mode 100644
index 0000000..f16274f
--- /dev/null
+++ b/pw/pw_log.c
@@ -0,0 +1,68 @@
+/*-
+ * Copyright (C) 1996
+ *	David L. Nugent.  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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT 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 DAVID L. NUGENT 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
+static const char rcsid[] =
+  "$FreeBSD$";
+#endif /* not lint */
+
+#include <fcntl.h>
+
+#include "pw.h"
+
+static FILE    *logfile = NULL;
+
+void
+pw_log(struct userconf * cnf, int mode, int which, char const * fmt,...)
+{
+	if (cnf->logfile && *cnf->logfile) {
+		if (logfile == NULL) {	/* With umask==0 we need to control file access modes on create */
+			int             fd = open(cnf->logfile, O_WRONLY | O_CREAT | O_APPEND, 0600);
+
+			if (fd != -1)
+				logfile = fdopen(fd, "a");
+		}
+		if (logfile != NULL) {
+			va_list         argp;
+			int             l;
+			time_t          now = time(NULL);
+			struct tm      *t = localtime(&now);
+			char            nfmt[256];
+			const char     *name;
+
+			if ((name = getenv("LOGNAME")) == NULL && (name = getenv("USER")) == NULL)
+				name = "unknown";
+			/* ISO 8601 International Standard Date format */
+			strftime(nfmt, sizeof nfmt, "%Y-%m-%d %T ", t);
+			l = strlen(nfmt);
+			sprintf(nfmt + strlen(nfmt), "[%s:%s%s] %s\n", name, Which[which], Modes[mode], fmt);
+			va_start(argp, fmt);
+			vfprintf(logfile, nfmt, argp);
+			va_end(argp);
+			fflush(logfile);
+		}
+	}
+}
diff --git a/pw/pw_nis.c b/pw/pw_nis.c
new file mode 100644
index 0000000..af5901a
--- /dev/null
+++ b/pw/pw_nis.c
@@ -0,0 +1,94 @@
+/*-
+ * Copyright (C) 1996
+ *	David L. Nugent.  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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT 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 DAVID L. NUGENT 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
+static const char rcsid[] =
+  "$FreeBSD$";
+#endif /* not lint */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <err.h>
+#include <pwd.h>
+#include <libutil.h>
+
+#include "pw.h"
+
+static int
+pw_nisupdate(const char * path, struct passwd * pwd, char const * user)
+{
+	int pfd, tfd;
+	struct passwd *pw = NULL;
+	struct passwd *old_pw = NULL;
+
+	if (pwd != NULL)
+		pw = pw_dup(pwd);
+
+	if (user != NULL)
+		old_pw = GETPWNAM(user);
+
+	if (pw_init(NULL, path))
+		err(1,"pw_init()");
+	if ((pfd = pw_lock()) == -1) {
+		pw_fini();
+		err(1, "pw_lock()");
+	}
+	if ((tfd = pw_tmp(-1)) == -1) {
+		pw_fini();
+		err(1, "pw_tmp()");
+	}
+	if (pw_copy(pfd, tfd, pw, old_pw) == -1) {
+		pw_fini();
+		err(1, "pw_copy()");
+	}
+	if (rename(pw_tempname(), path) == -1)
+		err(1, "rename()");
+
+	free(pw);
+	pw_fini();
+
+	return (0);
+}
+
+int
+addnispwent(const char *path, struct passwd * pwd)
+{
+	return pw_nisupdate(path, pwd, NULL);
+}
+
+int
+chgnispwent(const char *path, char const * login, struct passwd * pwd)
+{
+	return pw_nisupdate(path, pwd, login);
+}
+
+int
+delnispwent(const char *path, const char *login)
+{
+	return pw_nisupdate(path, NULL, login);
+}
diff --git a/pw/pw_user.c b/pw/pw_user.c
index 1b72cbd..abf1c35 100644
--- a/pw/pw_user.c
+++ b/pw/pw_user.c
@@ -42,6 +42,9 @@ static const char rcsid[] =
 #include <sys/resource.h>
 #include <unistd.h>
 #include <login_cap.h>
+#include <pwd.h>
+#include <grp.h>
+#include <libutil.h>
 #include "pw.h"
 #include "bitmap.h"
 
@@ -292,7 +295,6 @@ pw_user(struct userconf * cnf, int mode, struct cargs * args)
 	if (mode == M_PRINT && getarg(args, 'a')) {
 		int             pretty = getarg(args, 'P') != NULL;
 		int		v7 = getarg(args, '7') != NULL;
-
 		SETPWENT();
 		while ((pwd = GETPWENT()) != NULL)
 			print_user(pwd, pretty, v7);
@@ -422,7 +424,24 @@ pw_user(struct userconf * cnf, int mode, struct cargs * args)
 				/* non-fatal */
 			}
 
-			editgroups(a_name->val, NULL);
+			grp = GETGRNAM(a_name->val);
+			if (*grp->gr_mem == NULL)
+				delgrent(GETGRNAM(a_name->val));
+			SETGRENT();
+			while ((grp = GETGRENT()) != NULL) {
+				int i;
+				char group[MAXLOGNAME];
+				for (i = 0; grp->gr_mem[i] != NULL; i++) {
+					if (!strcmp(grp->gr_mem[i], a_name->val)) {
+						while (grp->gr_mem[i] != NULL) {
+							grp->gr_mem[i] = grp->gr_mem[i+1];
+						}	
+						strlcpy(group, grp->gr_name, MAXLOGNAME);
+						chggrent(group, grp);
+					}
+				}
+			}
+			ENDGRENT();
 
 			pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid);
 
@@ -725,8 +744,29 @@ pw_user(struct userconf * cnf, int mode, struct cargs * args)
 	 * Ok, user is created or changed - now edit group file
 	 */
 
-	if (mode == M_ADD || getarg(args, 'G') != NULL)
-		editgroups(pwd->pw_name, cnf->groups);
+	if (mode == M_ADD || getarg(args, 'G') != NULL) {
+		int i, j;
+		for (i = 0; cnf->groups[i] != NULL; i++) {
+			grp = GETGRNAM(cnf->groups[i]);
+			for (j = 0; grp->gr_mem[j] != NULL; j++) {
+				if (!strcmp(grp->gr_mem[j], pwd->pw_name))
+					break;
+			}
+			if (grp->gr_mem[j] != NULL) /* user already member of group */
+				continue;
+
+			if (j == 0)
+				grp->gr_mem = NULL;
+
+			grp->gr_mem = reallocf(grp->gr_mem, sizeof(*grp->gr_mem) *
+					                    (j + 2));
+
+			grp->gr_mem[j] = pwd->pw_name;
+			grp->gr_mem[j+1] = NULL;
+			chggrent(cnf->groups[i], grp);
+		}
+	}
+
 
 	/* go get a current version of pwd */
 	pwd = GETPWNAM(a_name->val);
@@ -1090,10 +1130,14 @@ static int
 print_user(struct passwd * pwd, int pretty, int v7)
 {
 	if (!pretty) {
-		char            buf[_UC_MAXLINE];
+		char            *buf;
+
+		if (!v7)
+			pwd->pw_passwd = (pwd->pw_passwd == NULL) ? "" : "*";
 
-		fmtpwentry(buf, pwd, v7 ? PWF_PASSWD : PWF_STANDARD);
-		fputs(buf, stdout);
+		buf = v7 ? pw_make_v7(pwd) : pw_make(pwd);
+		printf("%s\n", buf);
+		free(buf);
 	} else {
 		int		j;
 		char           *p;
diff --git a/pw/pw_vpw.c b/pw/pw_vpw.c
new file mode 100644
index 0000000..674b64f
--- /dev/null
+++ b/pw/pw_vpw.c
@@ -0,0 +1,302 @@
+/*-
+ * Copyright (C) 1996
+ *	David L. Nugent.  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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT 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 DAVID L. NUGENT 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
+static const char rcsid[] =
+  "$FreeBSD$";
+#endif /* not lint */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/param.h>
+
+#include "pwupd.h"
+
+static FILE * pwd_fp = NULL;
+
+void
+vendpwent(void)
+{
+	if (pwd_fp != NULL) {
+		fclose(pwd_fp);
+		pwd_fp = NULL;
+	}
+}
+
+void
+vsetpwent(void)
+{
+	vendpwent();
+}
+
+static struct passwd *
+vnextpwent(char const * nam, uid_t uid, int doclose)
+{
+	struct passwd * pw = NULL;
+	static char pwtmp[1024];
+
+        strlcpy(pwtmp, getpwpath(_MASTERPASSWD), sizeof(pwtmp));
+
+        if (pwd_fp != NULL || (pwd_fp = fopen(pwtmp, "r")) != NULL) {
+                int done = 0;
+
+                static struct passwd pwd;
+
+                while (!done && fgets(pwtmp, sizeof pwtmp, pwd_fp) != NULL)
+                {
+                        int i, quickout = 0;
+                        char * q;
+                        char * p = strchr(pwtmp, '\n');
+
+                        if (p == NULL) {
+		  		while (fgets(pwtmp, sizeof pwtmp, pwd_fp) != NULL && strchr(pwtmp, '\n')==NULL)
+		  			; /* Skip long lines */
+		  		continue;
+                        }
+
+			/* skip comments & empty lines */
+	       		if (*pwtmp =='\n' || *pwtmp == '#')
+				continue;
+
+                        i = 0;
+                        q = p = pwtmp;
+                        bzero(&pwd, sizeof pwd);
+                        while (!quickout && (p = strsep(&q, ":\n")) != NULL) {
+                          	switch (i++)
+                          	{
+                                case 0:   /* username */
+        				pwd.pw_name = p;
+        				if (nam) {
+        					if (strcmp(nam, p) == 0)
+        						done = 1;
+        					else
+        						quickout = 1;
+        				}
+        				break;
+                                case 1:   /* password */
+        				pwd.pw_passwd = p;
+        				break;
+                                case 2:   /* uid */
+        				pwd.pw_uid = atoi(p);
+        				if (uid != (uid_t)-1) {
+        					if (uid == pwd.pw_uid)
+        						done = 1;
+        					else
+        						quickout = 1;
+        				}
+        				break;
+                                case 3:   /* gid */
+        				pwd.pw_gid = atoi(p);
+        				break;
+                                case 4:   /* class */
+					if (nam == NULL && uid == (uid_t)-1)
+						done = 1;
+        				pwd.pw_class = p;
+        				break;
+                                case 5:   /* change */
+        				pwd.pw_change = (time_t)atol(p);
+        				break;
+                                case 6:   /* expire */
+        				pwd.pw_expire = (time_t)atol(p);
+        				break;
+                                case 7:   /* gecos */
+        				pwd.pw_gecos = p;
+        				break;
+                                case 8:   /* directory */
+        				pwd.pw_dir = p;
+        				break;
+                                case 9:   /* shell */
+        				pwd.pw_shell = p;
+        				break;
+                                }
+        		}
+                }
+		if (doclose)
+			vendpwent();
+		if (done && pwd.pw_name) {
+			pw = &pwd;
+
+			#define CKNULL(s)   s = s ? s : ""
+			CKNULL(pwd.pw_passwd);
+			CKNULL(pwd.pw_class);
+			CKNULL(pwd.pw_gecos);
+			CKNULL(pwd.pw_dir);
+			CKNULL(pwd.pw_shell);
+                }
+        }
+        return pw;
+}
+
+struct passwd *
+vgetpwent(void)
+{
+  return vnextpwent(NULL, -1, 0);
+}
+
+struct passwd *
+vgetpwuid(uid_t uid)
+{
+  return vnextpwent(NULL, uid, 1);
+}
+
+struct passwd *
+vgetpwnam(const char * nam)
+{
+  return vnextpwent(nam, -1, 1);
+}
+
+
+static FILE * grp_fp = NULL;
+
+void
+vendgrent(void)
+{
+	if (grp_fp != NULL) {
+		fclose(grp_fp);
+		grp_fp = NULL;
+	}
+}
+
+RET_SETGRENT
+vsetgrent(void)
+{
+	vendgrent();
+#if defined(__FreeBSD__)
+	return 0;
+#endif
+}
+
+static struct group *
+vnextgrent(char const * nam, gid_t gid, int doclose)
+{
+	struct group * gr = NULL;
+
+	static char * grtmp = NULL;
+	static int grlen = 0;
+	static char ** mems = NULL;
+	static int memlen = 0;
+
+	extendline(&grtmp, &grlen, MAXPATHLEN);
+	strlcpy(grtmp, getgrpath(_GROUP), MAXPATHLEN);
+
+	if (grp_fp != NULL || (grp_fp = fopen(grtmp, "r")) != NULL) {
+		int done = 0;
+
+		static struct group grp;
+
+		while (!done && fgets(grtmp, grlen, grp_fp) != NULL)
+		{
+			int i, quickout = 0;
+			int mno = 0;
+			char * q, * p;
+			const char * sep = ":\n";
+
+			if ((p = strchr(grtmp, '\n')) == NULL) {
+				int l;
+				extendline(&grtmp, &grlen, grlen + PWBUFSZ);
+				l = strlen(grtmp);
+				if (fgets(grtmp + l, grlen - l, grp_fp) == NULL)
+				  break;	/* No newline terminator on last line */
+			}
+			/* Skip comments and empty lines */
+			if (*grtmp == '\n' || *grtmp == '#')
+				continue;
+			i = 0;
+			q = p = grtmp;
+			bzero(&grp, sizeof grp);
+			extendarray(&mems, &memlen, 200);
+			while (!quickout && (p = strsep(&q, sep)) != NULL) {
+				switch (i++)
+				{
+				case 0:   /* groupname */
+					grp.gr_name = p;
+					if (nam) {
+						if (strcmp(nam, p) == 0)
+							done = 1;
+						else
+							quickout = 1;
+					}
+					break;
+				case 1:   /* password */
+					grp.gr_passwd = p;
+					break;
+				case 2:   /* gid */
+					grp.gr_gid = atoi(p);
+					if (gid != (gid_t)-1) {
+						if (gid == (gid_t)grp.gr_gid)
+							done = 1;
+						else
+							quickout = 1;
+					} else if (nam == NULL)
+						done = 1;
+					break;
+				case 3:
+					q = p;
+					sep = ",\n";
+					break;
+				default:
+					if (*p) {
+						extendarray(&mems, &memlen, mno + 2);
+						mems[mno++] = p;
+					}
+					break;
+				}
+			}
+			grp.gr_mem = mems;
+			mems[mno] = NULL;
+                }
+		if (doclose)
+			vendgrent();
+		if (done && grp.gr_name) {
+			gr = &grp;
+
+			CKNULL(grp.gr_passwd);
+		}
+	}
+	return gr;
+}
+
+struct group *
+vgetgrent(void)
+{
+  return vnextgrent(NULL, -1, 0);
+}
+
+
+struct group *
+vgetgrgid(gid_t gid)
+{
+  return vnextgrent(NULL, gid, 1);
+}
+
+struct group *
+vgetgrnam(const char * nam)
+{
+  return vnextgrent(nam, -1, 1);
+}
+
diff --git a/pw/pwupd.c b/pw/pwupd.c
index 1e20cc4..4ab0f01 100644
--- a/pw/pwupd.c
+++ b/pw/pwupd.c
@@ -34,7 +34,10 @@ static const char rcsid[] =
 #include <string.h>
 #include <unistd.h>
 #include <stdarg.h>
+#include <pwd.h>
+#include <libutil.h>
 #include <errno.h>
+#include <err.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/param.h>
@@ -71,7 +74,7 @@ getpwpath(char const * file)
 	return pathbuf;
 }
 
-int
+static int
 pwdb(char *arg,...)
 {
 	int             i = 0;
@@ -106,44 +109,11 @@ pwdb(char *arg,...)
 	return i;
 }
 
-int
-fmtpwentry(char *buf, struct passwd * pwd, int type)
-{
-	int             l;
-	char           *pw;
-
-	pw = (type == PWF_MASTER) ?
-	    ((pwd->pw_passwd == NULL) ? "" : pwd->pw_passwd) : "*";
-
-	if (type == PWF_PASSWD)
-		l = sprintf(buf, "%s:*:%ld:%ld:%s:%s:%s\n",
-		       pwd->pw_name, (long) pwd->pw_uid, (long) pwd->pw_gid,
-			    pwd->pw_gecos ? pwd->pw_gecos : "User &",
-			    pwd->pw_dir, pwd->pw_shell);
-	else
-		l = sprintf(buf, "%s:%s:%ld:%ld:%s:%lu:%lu:%s:%s:%s\n",
-		   pwd->pw_name, pw, (long) pwd->pw_uid, (long) pwd->pw_gid,
-			    pwd->pw_class ? pwd->pw_class : "",
-			    (unsigned long) pwd->pw_change,
-			    (unsigned long) pwd->pw_expire,
-			    pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);
-	return l;
-}
-
-
-int
-fmtpwent(char *buf, struct passwd * pwd)
-{
-	return fmtpwentry(buf, pwd, PWF_STANDARD);
-}
-
 static int
-pw_update(struct passwd * pwd, char const * user, int mode)
+pw_update(struct passwd * pwd, char const * user)
 {
 	int             rc = 0;
 
-	ENDPWENT();
-
 	/*
 	 * First, let's check the see if the database is alright
 	 * Note: -C is only available in FreeBSD 2.2 and above
@@ -154,61 +124,57 @@ pw_update(struct passwd * pwd, char const * user, int mode)
 #else
 	{				/* No -C */
 #endif
-		char            pfx[PWBUFSZ];
-		char            pwbuf[PWBUFSZ];
-		int             l = snprintf(pfx, PWBUFSZ, "%s:", user);
-#ifdef HAVE_PWDB_U
-		int		isrename = pwd!=NULL && strcmp(user, pwd->pw_name);
-#endif
+		int pfd, tfd;
+		struct passwd *pw = NULL;
+		struct passwd *old_pw = NULL;
 
-		/*
-		 * Update the passwd file first
-		 */
-		if (pwd == NULL)
-			*pwbuf = '\0';
-		else
-			fmtpwentry(pwbuf, pwd, PWF_PASSWD);
-
-		if (l < 0)
-			l = 0;
-		rc = fileupdate(getpwpath(_PASSWD), 0644, pwbuf, pfx, l, mode);
-		if (rc == 0) {
-
-			/*
-			 * Then the master.passwd file
-			 */
-			if (pwd != NULL)
-				fmtpwentry(pwbuf, pwd, PWF_MASTER);
-			rc = fileupdate(getpwpath(_MASTERPASSWD), 0600, pwbuf, pfx, l, mode);
-			if (rc == 0) {
-#ifdef HAVE_PWDB_U
-				if (mode == UPD_DELETE || isrename)
-#endif
-					rc = pwdb(NULL);
-#ifdef HAVE_PWDB_U
-				else
-					rc = pwdb("-u", user, (char *)NULL);
-#endif
-			}
+	       	if (pwd != NULL)
+		       pw = pw_dup(pwd);
+
+		if (user != NULL)
+			old_pw = GETPWNAM(user);
+
+		if (pw_init(pwpath, NULL))
+			err(1, "pw_init()");
+		if ((pfd = pw_lock()) == -1) {
+			pw_fini();
+			err(1, "pw_lock()");
+		}
+		if ((tfd = pw_tmp(-1)) == -1) {
+			pw_fini();
+			err(1, "pw_tmp()");
+		}
+		if (pw_copy(pfd, tfd, pw, old_pw) == -1) {
+			pw_fini();
+			err(1, "pw_copy()");
 		}
+		if (pw_mkdb(user) == -1) {
+			pw_fini();
+			err(1, "pw_mkdb()");
+		}
+		free(pw);
+		pw_fini();
 	}
-	return rc;
+	return 0;
 }
 
 int
 addpwent(struct passwd * pwd)
 {
-	return pw_update(pwd, pwd->pw_name, UPD_CREATE);
+	return pw_update(pwd, NULL);
 }
 
 int
 chgpwent(char const * login, struct passwd * pwd)
 {
-	return pw_update(pwd, login, UPD_REPLACE);
+	return pw_update(pwd, login);
 }
 
 int
 delpwent(struct passwd * pwd)
 {
-	return pw_update(NULL, pwd->pw_name, UPD_DELETE);
+	char login[MAXLOGNAME];
+	
+	strlcpy(login, pwd->pw_name, MAXLOGNAME);
+	return pw_update(NULL, login);
 }
diff --git a/pw/pwupd.h b/pw/pwupd.h
new file mode 100644
index 0000000..200ffee
--- /dev/null
+++ b/pw/pwupd.h
@@ -0,0 +1,121 @@
+/*-
+ * Copyright (C) 1996
+ *	David L. Nugent.  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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT 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 DAVID L. NUGENT 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _PWUPD_H_
+#define _PWUPD_H_
+
+#include <sys/types.h>
+#include <pwd.h>
+#include <grp.h>
+
+#include <sys/cdefs.h>
+
+#if defined(__FreeBSD__)
+#define	RET_SETGRENT	int
+#else
+#define	RET_SETGRENT	void
+#endif
+
+struct pwf
+{
+	int		    _altdir;
+	void		  (*_setpwent)(void);
+	void		  (*_endpwent)(void);
+	struct passwd * (*_getpwent)(void);
+	struct passwd	* (*_getpwuid)(uid_t uid);
+	struct passwd	* (*_getpwnam)(const char * nam);
+	RET_SETGRENT	  (*_setgrent)(void);
+	void		  (*_endgrent)(void);
+	struct group  * (*_getgrent)(void);
+	struct group  * (*_getgrgid)(gid_t gid);
+	struct group  * (*_getgrnam)(const char * nam);
+};
+
+extern struct pwf PWF;
+extern struct pwf VPWF;
+
+#define SETPWENT()	PWF._setpwent()
+#define ENDPWENT()	PWF._endpwent()
+#define GETPWENT()	PWF._getpwent()
+#define GETPWUID(uid)	PWF._getpwuid(uid)
+#define GETPWNAM(nam)	PWF._getpwnam(nam)
+
+#define SETGRENT()	PWF._setgrent()
+#define ENDGRENT()	PWF._endgrent()
+#define GETGRENT()	PWF._getgrent()
+#define GETGRGID(gid)	PWF._getgrgid(gid)
+#define GETGRNAM(nam)	PWF._getgrnam(nam)
+
+#define PWALTDIR()	PWF._altdir
+#ifndef _PATH_PWD
+#define _PATH_PWD	"/etc"
+#endif
+#ifndef _GROUP
+#define _GROUP		"group"
+#endif
+#ifndef _MASTERPASSWD
+#define _MASTERPASSWD	"master.passwd"
+#endif
+
+__BEGIN_DECLS
+int addpwent(struct passwd * pwd);
+int delpwent(struct passwd * pwd);
+int chgpwent(char const * login, struct passwd * pwd);
+
+int setpwdir(const char * dir);
+char * getpwpath(char const * file);
+
+int addgrent(struct group * grp);
+int delgrent(struct group * grp);
+int chggrent(char const * name, struct group * grp);
+int editgroups(char *name, char **groups);
+
+int setgrdir(const char * dir);
+char * getgrpath(const char *file);
+
+void vsetpwent(void);
+void vendpwent(void);
+struct passwd * vgetpwent(void);
+struct passwd * vgetpwuid(uid_t uid);
+struct passwd * vgetpwnam(const char * nam);
+
+struct group * vgetgrent(void);
+struct group * vgetgrgid(gid_t gid);
+struct group * vgetgrnam(const char * nam);
+RET_SETGRENT   vsetgrent(void);
+void           vendgrent(void);
+
+void copymkdir(char const * dir, char const * skel, mode_t mode, uid_t uid, gid_t gid);
+void rm_r(char const * dir, uid_t uid);
+int extendline(char **buf, int *buflen, int needed);
+int extendarray(char ***buf, int *buflen, int needed);
+__END_DECLS
+
+#define PWBUFSZ 1024
+
+#endif				/* !_PWUPD_H */