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	diff --git a/usr.sbin/pw/pw_user.c b/usr.sbin/pw/pw_user.c
	index fd5f4f090686..87ec76c7716c 100644
	--- a/usr.sbin/pw/pw_user.c
	+++ b/usr.sbin/pw/pw_user.c
	@@ -1,1111 +1,1111 @@
	/*-
	* 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[] =
	- "$Id: pw_user.c,v 1.23 1997/10/10 06:23:39 charnier Exp $";
	+ "$Id: pw_user.c,v 1.24 1999/01/02 04:37:46 billf Exp $";
	#endif /* not lint */

	#include <ctype.h>
	#include <err.h>
	#include <fcntl.h>
	#include <sys/param.h>
	#include <dirent.h>
	#include <paths.h>
	#include <termios.h>
	#include <sys/types.h>
	#include <sys/time.h>
	#include <sys/resource.h>
	#include <unistd.h>
	#include <utmp.h>
	#if defined(USE_MD5RAND)
	#include <md5.h>
	#endif
	#include "pw.h"
	#include "bitmap.h"
	#include "pwupd.h"

	#if (MAXLOGNAME-1) > UT_NAMESIZE
	#define LOGNAMESIZE UT_NAMESIZE
	#else
	#define LOGNAMESIZE (MAXLOGNAME-1)
	#endif

	static randinit;

	static int print_user(struct passwd * pwd, int pretty);
	static uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args);
	static uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer);
	static time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args);
	static time_t pw_exppolicy(struct userconf * cnf, struct cargs * args);
	static char pw_homepolicy(struct userconf cnf, struct cargs * args, char const * user);
	static char pw_shellpolicy(struct userconf cnf, struct cargs * args, char *newshell);
	static char pw_password(struct userconf cnf, struct cargs * args, char const * user);
	static char shell_path(char const path, char shells[], char sh);
	static void rmat(uid_t uid);
	static void rmskey(char const * name);

	/*-
	* -C config configuration file
	* -q quiet operation
	* -n name login name
	* -u uid user id
	* -c comment user name/comment
	* -d directory home directory
	* -e date account expiry date
	* -p date password expiry date
	* -g grp primary group
	* -G grp1,grp2 additional groups
	* -m [ -k dir ] create and set up home
	* -s shell name of login shell
	* -o duplicate uid ok
	* -L class user class
	* -l name new login name
	* -h fd password filehandle
	* -F force print or add
	* Setting defaults:
	* -D set user defaults
	* -b dir default home root dir
	* -e period default expiry period
	* -p period default password change period
	* -g group default group
	* -G grp1,grp2.. default additional groups
	* -L class default login class
	* -k dir default home skeleton
	* -s shell default shell
	* -w method default password method
	*/

	int
	pw_user(struct userconf * cnf, int mode, struct cargs * args)
	{
	int r, r1;
	char *p = NULL;
	struct carg *a_name;
	struct carg *a_uid;
	struct carg *arg;
	struct passwd *pwd = NULL;
	struct group *grp;
	struct stat st;
	char line[_PASSWORD_LEN+1];

	static struct passwd fakeuser =
	{
	NULL,
	"*",
	-1,
	-1,
	0,
	"",
	"User &",
	"/bin/sh",
	0,
	0
	};

	/*
	* With M_NEXT, we only need to return the
	* next uid to stdout
	*/
	if (mode == M_NEXT)
	{
	uid_t next = pw_uidpolicy(cnf, args);
	if (getarg(args, 'q'))
	return next;
	printf("%ld:", (long)next);
	pw_group(cnf, mode, args);
	return EXIT_SUCCESS;
	}

	/*
	* We can do all of the common legwork here
	*/

	if ((arg = getarg(args, 'b')) != NULL) {
	cnf->home = arg->val;
	}

	/*
	* If we'll need to use it or we're updating it,
	* then create the base home directory if necessary
	*/
	if (arg != NULL \|\| getarg(args, 'm') != NULL) {
	int l = strlen(cnf->home);

	if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */
	cnf->home[--l] = '\0';

	if (l < 2 \|\| cnf->home != '/') / Check for absolute path name */
	errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home);

	if (stat(cnf->home, &st) == -1) {
	char dbuf[MAXPATHLEN];

	/*
	* This is a kludge especially for Joerg :)
	* If the home directory would be created in the root partition, then
	* we really create it under /usr which is likely to have more space.
	* But we create a symlink from cnf->home -> "/usr" -> cnf->home
	*/
	if (strchr(cnf->home+1, '/') == NULL) {
	strcpy(dbuf, "/usr");
	strncat(dbuf, cnf->home, MAXPATHLEN-5);
	if (mkdir(dbuf, 0755) != -1 \|\| errno == EEXIST) {
	chown(dbuf, 0, 0);
	symlink(dbuf, cnf->home);
	}
	/* If this falls, fall back to old method */
	}
	p = strncpy(dbuf, cnf->home, sizeof dbuf);
	dbuf[MAXPATHLEN-1] = '\0';
	if (stat(dbuf, &st) == -1) {
	while ((p = strchr(++p, '/')) != NULL) {
	*p = '\0';
	if (stat(dbuf, &st) == -1) {
	if (mkdir(dbuf, 0755) == -1)
	goto direrr;
	chown(dbuf, 0, 0);
	} else if (!S_ISDIR(st.st_mode))
	errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf);
	*p = '/';
	}
	}
	if (stat(dbuf, &st) == -1) {
	if (mkdir(dbuf, 0755) == -1) {
	direrr: err(EX_OSFILE, "mkdir '%s'", dbuf);
	}
	chown(dbuf, 0, 0);
	}
	} else if (!S_ISDIR(st.st_mode))
	errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home);
	}


	if ((arg = getarg(args, 'e')) != NULL)
	cnf->expire_days = atoi(arg->val);

	if ((arg = getarg(args, 'y')) != NULL)
	cnf->nispasswd = arg->val;

	if ((arg = getarg(args, 'p')) != NULL && arg->val)
	cnf->password_days = atoi(arg->val);

	if ((arg = getarg(args, 'g')) != NULL) {
	p = arg->val;
	if ((grp = getgrnam(p)) == NULL) {
	if (!isdigit(*p) \|\| (grp = getgrgid((gid_t) atoi(p))) == NULL)
	errx(EX_NOUSER, "group `%s' does not exist", p);
	}
	cnf->default_group = newstr(grp->gr_name);
	}
	if ((arg = getarg(args, 'L')) != NULL)
	cnf->default_class = pw_checkname((u_char *)arg->val, 0);

	if ((arg = getarg(args, 'G')) != NULL && arg->val) {
	int i = 0;

	for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) {
	if ((grp = getgrnam(p)) == NULL) {
	if (!isdigit(*p) \|\| (grp = getgrgid((gid_t) atoi(p))) == NULL)
	errx(EX_NOUSER, "group `%s' does not exist", p);
	}
	if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1)
	cnf->groups[i++] = newstr(grp->gr_name);
	}
	while (i < cnf->numgroups)
	cnf->groups[i++] = NULL;
	}
	if ((arg = getarg(args, 'k')) != NULL) {
	if (stat(cnf->dotdir = arg->val, &st) == -1 \|\| !S_ISDIR(st.st_mode))
	errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir);
	}
	if ((arg = getarg(args, 's')) != NULL)
	cnf->shell_default = arg->val;

	if (mode == M_ADD && getarg(args, 'D')) {
	if (getarg(args, 'n') != NULL)
	errx(EX_DATAERR, "can't combine `-D' with `-n name'");
	if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) {
	if ((cnf->min_uid = (uid_t) atoi(p)) == 0)
	cnf->min_uid = 1000;
	if ((p = strtok(NULL, " ,\t")) == NULL \|\| (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid)
	cnf->max_uid = 32000;
	}
	if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) {
	if ((cnf->min_gid = (gid_t) atoi(p)) == 0)
	cnf->min_gid = 1000;
	if ((p = strtok(NULL, " ,\t")) == NULL \|\| (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid)
	cnf->max_gid = 32000;
	}
	if ((arg = getarg(args, 'w')) != NULL)
	cnf->default_password = boolean_val(arg->val, cnf->default_password);

	arg = getarg(args, 'C');
	if (write_userconfig(arg ? arg->val : NULL))
	return EXIT_SUCCESS;
	warn("config update");
	return EX_IOERR;
	}
	if (mode == M_PRINT && getarg(args, 'a')) {
	int pretty = getarg(args, 'P') != NULL;

	setpwent();
	while ((pwd = getpwent()) != NULL)
	print_user(pwd, pretty);
	endpwent();
	return EXIT_SUCCESS;
	}
	if ((a_name = getarg(args, 'n')) != NULL)
	pwd = getpwnam(pw_checkname((u_char *)a_name->val, 0));
	a_uid = getarg(args, 'u');

	if (a_uid == NULL) {
	if (a_name == NULL)
	errx(EX_DATAERR, "user name or id required");

	/*
	* Determine whether 'n' switch is name or uid - we don't
	* really don't really care which we have, but we need to
	* know.
	*/
	if (mode != M_ADD && pwd == NULL && isdigit(a_name->val) && atoi(a_name->val) > 0) { / Assume uid */
	(a_uid = a_name)->ch = 'u';
	a_name = NULL;
	}
	}
	/*
	* Update, delete & print require that the user exists
	*/
	if (mode == M_UPDATE \|\| mode == M_DELETE \|\| mode == M_PRINT) {
	if (a_name == NULL && pwd == NULL) /* Try harder */
	pwd = getpwuid(atoi(a_uid->val));

	if (pwd == NULL) {
	if (mode == M_PRINT && getarg(args, 'F')) {
	fakeuser.pw_name = a_name ? a_name->val : "nouser";
	fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1;
	return print_user(&fakeuser, getarg(args, 'P') != NULL);
	}
	if (a_name == NULL)
	errx(EX_NOUSER, "no such uid `%s'", a_uid->val);
	errx(EX_NOUSER, "no such user `%s'", a_name->val);
	}
	if (a_name == NULL) /* May be needed later */
	a_name = addarg(args, 'n', newstr(pwd->pw_name));

	/*
	* Handle deletions now
	*/
	if (mode == M_DELETE) {
	char file[MAXPATHLEN];
	char home[MAXPATHLEN];
	uid_t uid = pwd->pw_uid;

	if (strcmp(pwd->pw_name, "root") == 0)
	errx(EX_DATAERR, "cannot remove user 'root'");

	/*
	* Remove skey record from /etc/skeykeys
	*/

	rmskey(pwd->pw_name);

	/*
	* Remove crontabs
	*/
	sprintf(file, "/var/cron/tabs/%s", pwd->pw_name);
	if (access(file, F_OK) == 0) {
	sprintf(file, "crontab -u %s -r", pwd->pw_name);
	system(file);
	}
	/*
	* Save these for later, since contents of pwd may be
	* invalidated by deletion
	*/
	sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name);
	strncpy(home, pwd->pw_dir, sizeof home);
	home[sizeof home - 1] = '\0';

	if (!delpwent(pwd))
	err(EX_IOERR, "error updating passwd file");

	if (cnf->nispasswd && *cnf->nispasswd=='/' && !delnispwent(cnf->nispasswd, a_name->val))
	warn("WARNING: NIS passwd update");

	editgroups(a_name->val, NULL);

	pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid);

	/*
	* Remove mail file
	*/
	remove(file);

	/*
	* Remove at jobs
	*/
	if (getpwuid(uid) == NULL)
	rmat(uid);

	/*
	* Remove home directory and contents
	*/
	if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) {
	if (stat(home, &st) != -1) {
	rm_r(home, uid);
	pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved",
	a_name->val, (long) uid, home,
	stat(home, &st) == -1 ? "" : "not completely ");
	}
	}
	return EXIT_SUCCESS;
	} else if (mode == M_PRINT)
	return print_user(pwd, getarg(args, 'P') != NULL);

	/*
	* The rest is edit code
	*/
	if ((arg = getarg(args, 'l')) != NULL) {
	if (strcmp(pwd->pw_name, "root") == 0)
	errx(EX_DATAERR, "can't rename `root' account");
	pwd->pw_name = pw_checkname((u_char *)arg->val, 0);
	}
	if ((arg = getarg(args, 'u')) != NULL && isdigit(*arg->val)) {
	pwd->pw_uid = (uid_t) atol(arg->val);
	if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0)
	errx(EX_DATAERR, "can't change uid of `root' account");
	if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
	warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name);
	}
	if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) /* Already checked this */
	pwd->pw_gid = (gid_t) getgrnam(cnf->default_group)->gr_gid;

	if ((arg = getarg(args, 'p')) != NULL) {
	if (*arg->val == '\0' \|\| strcmp(arg->val, "0") == 0)
	pwd->pw_change = 0;
	else {
	time_t now = time(NULL);
	time_t expire = parse_date(now, arg->val);

	if (now == expire)
	errx(EX_DATAERR, "invalid password change date `%s'", arg->val);
	pwd->pw_change = expire;
	}
	}
	if ((arg = getarg(args, 'e')) != NULL) {
	if (*arg->val == '\0' \|\| strcmp(arg->val, "0") == 0)
	pwd->pw_expire = 0;
	else {
	time_t now = time(NULL);
	time_t expire = parse_date(now, arg->val);

	if (now == expire)
	errx(EX_DATAERR, "invalid account expiry date `%s'", arg->val);
	pwd->pw_expire = expire;
	}
	}
	if ((arg = getarg(args, 's')) != NULL)
	pwd->pw_shell = shell_path(cnf->shelldir, cnf->shells, arg->val);

	if (getarg(args, 'L'))
	pwd->pw_class = cnf->default_class;

	if ((arg = getarg(args, 'd')) != NULL) {
	if (stat(pwd->pw_dir = arg->val, &st) == -1) {
	if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0)
	warnx("WARNING: home `%s' does not exist", pwd->pw_dir);
	} else if (!S_ISDIR(st.st_mode))
	warnx("WARNING: home `%s' is not a directory", pwd->pw_dir);
	}

	if ((arg = getarg(args, 'w')) != NULL && getarg(args, 'h') == NULL)
	pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name);

	} else {
	if (a_name == NULL) /* Required */
	errx(EX_DATAERR, "login name required");
	else if ((pwd = getpwnam(a_name->val)) != NULL) /* Exists */
	errx(EX_DATAERR, "login name `%s' already exists", a_name->val);

	/*
	* Now, set up defaults for a new user
	*/
	pwd = &fakeuser;
	pwd->pw_name = a_name->val;
	pwd->pw_class = cnf->default_class ? cnf->default_class : "";
	pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name);
	pwd->pw_uid = pw_uidpolicy(cnf, args);
	pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid);
	pwd->pw_change = pw_pwdpolicy(cnf, args);
	pwd->pw_expire = pw_exppolicy(cnf, args);
	pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name);
	pwd->pw_shell = pw_shellpolicy(cnf, args, NULL);

	if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
	warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name);
	}

	/*
	* Shared add/edit code
	*/
	if ((arg = getarg(args, 'c')) != NULL)
	pwd->pw_gecos = pw_checkname((u_char *)arg->val, 1);

	if ((arg = getarg(args, 'h')) != NULL) {
	if (strcmp(arg->val, "-") == 0)
	pwd->pw_passwd = ""; / No access */
	else {
	int fd = atoi(arg->val);
	int b;
	int istty = isatty(fd);
	struct termios t;

	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 user %s:", (mode == M_UPDATE) ? "New p" : "P", pwd->pw_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_IOERR;
	}
	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);
	pwd->pw_passwd = pw_pwcrypt(line);
	}
	}

	/*
	* Special case: -N only displays & exits
	*/
	if (getarg(args, 'N') != NULL)
	return print_user(pwd, getarg(args, 'P') != NULL);

	r = r1 = 1;
	if (mode == M_ADD) {
	r = addpwent(pwd);
	if (r && cnf->nispasswd && *cnf->nispasswd=='/')
	r1 = addnispwent(cnf->nispasswd, pwd);
	} else if (mode == M_UPDATE) {
	r = chgpwent(a_name->val, pwd);
	if (r && cnf->nispasswd && *cnf->nispasswd=='/')
	r1 = chgnispwent(cnf->nispasswd, a_name->val, pwd);
	}

	if (!r) {
	warn("password update");
	return EX_IOERR;
	} else if (!r1) {
	warn("WARNING: NIS password update");
	/* Keep on trucking */
	}

	/*
	* Ok, user is created or changed - now edit group file
	*/

	if (mode == M_ADD \|\| getarg(args, 'G') != NULL)
	editgroups(pwd->pw_name, cnf->groups);

	/* pwd may have been invalidated */
	if ((pwd = getpwnam(a_name->val)) == NULL)
	errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val);

	grp = getgrgid(pwd->pw_gid);
	pw_log(cnf, mode, W_USER, "%s(%ld):%s(%d):%s:%s:%s",
	pwd->pw_name, (long) pwd->pw_uid,
	grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1),
	pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);

	/*
	* If adding, let's touch and chown the user's mail file. This is not
	* strictly necessary under BSD with a 0755 maildir but it also
	* doesn't hurt anything to create the empty mailfile
	*/
	if (mode == M_ADD) {
	FILE *fp;

	sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name);
	close(open(line, O_RDWR \| O_CREAT, 0600)); /* Preserve contents &
	* mtime */
	chown(line, pwd->pw_uid, pwd->pw_gid);

	/*
	* Send mail to the new user as well, if we are asked to
	*/
	if (cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) {
	FILE *pfp = popen(_PATH_SENDMAIL " -t", "w");

	if (pfp == NULL)
	warn("sendmail");
	else {
	fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name);
	while (fgets(line, sizeof(line), fp) != NULL) {
	/* Do substitutions? */
	fputs(line, pfp);
	}
	pclose(pfp);
	pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent",
	pwd->pw_name, (long) pwd->pw_uid);
	}
	fclose(fp);
	}
	}
	/*
	* Finally, let's create and populate the user's home directory. Note
	* that this also `works' for editing users if -m is used, but
	* existing files will not be overwritten.
	*/
	if (getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) {
	copymkdir(pwd->pw_dir, cnf->dotdir, 0755, pwd->pw_uid, pwd->pw_gid);
	pw_log(cnf, mode, W_USER, "%s(%ld) home %s made",
	pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir);
	}
	return EXIT_SUCCESS;
	}


	static uid_t
	pw_uidpolicy(struct userconf * cnf, struct cargs * args)
	{
	struct passwd *pwd;
	uid_t uid = (uid_t) - 1;
	struct carg *a_uid = getarg(args, 'u');

	/*
	* Check the given uid, if any
	*/
	if (a_uid != NULL) {
	uid = (uid_t) atol(a_uid->val);

	if ((pwd = getpwuid(uid)) != NULL && getarg(args, 'o') == NULL)
	errx(EX_DATAERR, "uid `%ld' has already been allocated", (long) pwd->pw_uid);
	} else {
	struct bitmap bm;

	/*
	* We need to allocate the next available uid under one of
	* two policies a) Grab the first unused uid b) Grab the
	* highest possible unused uid
	*/
	if (cnf->min_uid >= cnf->max_uid) { /* Sanity
	* claus^H^H^H^Hheck */
	cnf->min_uid = 1000;
	cnf->max_uid = 32000;
	}
	bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1);

	/*
	* Now, let's fill the bitmap from the password file
	*/
	setpwent();
	while ((pwd = getpwent()) != NULL)
	if (pwd->pw_uid >= (int) cnf->min_uid && pwd->pw_uid <= (int) cnf->max_uid)
	bm_setbit(&bm, pwd->pw_uid - cnf->min_uid);
	endpwent();

	/*
	* Then apply the policy, with fallback to reuse if necessary
	*/
	if (cnf->reuse_uids \|\| (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid)
	uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid);

	/*
	* Another sanity check
	*/
	if (uid < cnf->min_uid \|\| uid > cnf->max_uid)
	errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used");
	bm_dealloc(&bm);
	}
	return uid;
	}


	static uid_t
	pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer)
	{
	struct group *grp;
	gid_t gid = (uid_t) - 1;
	struct carg *a_gid = getarg(args, 'g');

	/*
	* If no arg given, see if default can help out
	*/
	if (a_gid == NULL && cnf->default_group && *cnf->default_group)
	a_gid = addarg(args, 'g', cnf->default_group);

	/*
	* Check the given gid, if any
	*/
	setgrent();
	if (a_gid != NULL) {
	if ((grp = getgrnam(a_gid->val)) == NULL) {
	gid = (gid_t) atol(a_gid->val);
	if ((gid == 0 && !isdigit(*a_gid->val)) \|\| (grp = getgrgid(gid)) == NULL)
	errx(EX_NOUSER, "group `%s' is not defined", a_gid->val);
	}
	gid = grp->gr_gid;
	} else if ((grp = getgrnam(nam)) != NULL && grp->gr_mem[0] == NULL) {
	gid = grp->gr_gid; /* Already created? Use it anyway... */
	} else {
	struct cargs grpargs;
	char tmp[32];

	LIST_INIT(&grpargs);
	addarg(&grpargs, 'n', nam);

	/*
	* We need to auto-create a group with the user's name. We
	* can send all the appropriate output to our sister routine
	* bit first see if we can create a group with gid==uid so we
	* can keep the user and group ids in sync. We purposely do
	* NOT check the gid range if we can force the sync. If the
	* user's name dups an existing group, then the group add
	* function will happily handle that case for us and exit.
	*/
	if (getgrgid(prefer) == NULL) {
	sprintf(tmp, "%lu", (unsigned long) prefer);
	addarg(&grpargs, 'g', tmp);
	}
	if (getarg(args, 'N'))
	{
	addarg(&grpargs, 'N', NULL);
	addarg(&grpargs, 'q', NULL);
	gid = pw_group(cnf, M_NEXT, &grpargs);
	}
	else
	{
	pw_group(cnf, M_ADD, &grpargs);
	if ((grp = getgrnam(nam)) != NULL)
	gid = grp->gr_gid;
	}
	a_gid = grpargs.lh_first;
	while (a_gid != NULL) {
	struct carg *t = a_gid->list.le_next;
	LIST_REMOVE(a_gid, list);
	a_gid = t;
	}
	}
	endgrent();
	return gid;
	}


	static time_t
	pw_pwdpolicy(struct userconf * cnf, struct cargs * args)
	{
	time_t result = 0;
	time_t now = time(NULL);
	struct carg *arg = getarg(args, 'p');

	if (arg != NULL) {
	if ((result = parse_date(now, arg->val)) == now)
	errx(EX_DATAERR, "invalid date/time `%s'", arg->val);
	} else if (cnf->password_days > 0)
	result = now + ((long) cnf->password_days * 86400L);
	return result;
	}


	static time_t
	pw_exppolicy(struct userconf * cnf, struct cargs * args)
	{
	time_t result = 0;
	time_t now = time(NULL);
	struct carg *arg = getarg(args, 'e');

	if (arg != NULL) {
	if ((result = parse_date(now, arg->val)) == now)
	errx(EX_DATAERR, "invalid date/time `%s'", arg->val);
	} else if (cnf->expire_days > 0)
	result = now + ((long) cnf->expire_days * 86400L);
	return result;
	}


	static char *
	pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user)
	{
	struct carg *arg = getarg(args, 'd');

	if (arg)
	return arg->val;
	else {
	static char home[128];

	if (cnf->home == NULL \|\| *cnf->home == '\0')
	errx(EX_CONFIG, "no base home directory set");
	sprintf(home, "%s/%s", cnf->home, user);
	return home;
	}
	}

	static char *
	shell_path(char const * path, char shells[], char sh)
	{
	if (sh != NULL && (sh == '/' \|\| sh == '\0'))
	return sh; /* specified full path or forced none */
	else {
	char *p;
	char paths[_UC_MAXLINE];

	/*
	* We need to search paths
	*/
	strncpy(paths, path, sizeof paths);
	paths[sizeof paths - 1] = '\0';
	for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) {
	int i;
	static char shellpath[256];

	if (sh != NULL) {
	sprintf(shellpath, "%s/%s", p, sh);
	if (access(shellpath, X_OK) == 0)
	return shellpath;
	} else
	for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) {
	sprintf(shellpath, "%s/%s", p, shells[i]);
	if (access(shellpath, X_OK) == 0)
	return shellpath;
	}
	}
	if (sh == NULL)
	errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh);
	errx(EX_CONFIG, "no default shell available or defined");
	return NULL;
	}
	}


	static char *
	pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell)
	{
	char *sh = newshell;
	struct carg *arg = getarg(args, 's');

	if (newshell == NULL && arg != NULL)
	sh = arg->val;
	return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default);
	}

	static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.";

	char *
	pw_pwcrypt(char *password)
	{
	int i;
	char salt[12];

	static char buf[256];

	/*
	* Calculate a salt value
	*/
	if (!randinit) {
	randinit = 1;
	#ifdef __FreeBSD__
	srandomdev();
	#else
	srandom((unsigned long) (time(NULL) ^ getpid()));
	#endif
	}
	for (i = 0; i < 8; i++)
	salt[i] = chars[random() % 63];
	salt[i] = '\0';

	return strcpy(buf, crypt(password, salt));
	}

	#if defined(USE_MD5RAND)
	u_char *
	pw_getrand(u_char buf, int len) / cryptographically secure rng */
	{
	int i;
	for (i=0;i<len;i+=16) {
	u_char ubuf[16];

	MD5_CTX md5_ctx;
	struct timeval tv, tvo;
	struct rusage ru;
	int n=0;
	int t;

	MD5Init (&md5_ctx);
	t=getpid();
	MD5Update (&md5_ctx, (u_char*)&t, sizeof t);
	t=getppid();
	MD5Update (&md5_ctx, (u_char*)&t, sizeof t);
	gettimeofday (&tvo, NULL);
	do {
	getrusage (RUSAGE_SELF, &ru);
	MD5Update (&md5_ctx, (u_char*)&ru, sizeof ru);
	gettimeofday (&tv, NULL);
	MD5Update (&md5_ctx, (u_char*)&tv, sizeof tv);
	} while (n++<20 \|\| tv.tv_usec-tvo.tv_usec<100*1000);
	MD5Final (ubuf, &md5_ctx);
	memcpy(buf+i, ubuf, MIN(16, len-n));
	}
	return buf;
	}

	#else /* Portable version */

	static u_char *
	pw_getrand(u_char *buf, int len)
	{
	int i;

	for (i = 0; i < len; i++) {
	unsigned long val = random();
	/* Use all bits in the random value */
	buf[i]=(u_char)((val >> 24) ^ (val >> 16) ^ (val >> 8) ^ val);
	}
	return buf;
	}

	#endif

	static char *
	pw_password(struct userconf * cnf, struct cargs * args, char const * user)
	{
	int i, l;
	char pwbuf[32];
	u_char rndbuf[sizeof pwbuf];

	switch (cnf->default_password) {
	case -1: /* Random password */
	if (!randinit) {
	randinit = 1;
	#ifdef __FreeBSD__
	srandomdev();
	#else
	srandom((unsigned long) (time(NULL) ^ getpid()));
	#endif
	}
	l = (random() % 8 + 8); /* 8 - 16 chars */
	pw_getrand(rndbuf, l);
	for (i = 0; i < l; i++)
	pwbuf[i] = chars[rndbuf[i] % (sizeof(chars)-1)];
	pwbuf[i] = '\0';

	/*
	* We give this information back to the user
	*/
	if (getarg(args, 'h') == NULL && getarg(args, 'N') == NULL) {
	if (isatty(1))
	printf("Password for '%s' is: ", user);
	printf("%s\n", pwbuf);
	fflush(stdout);
	}
	break;

	case -2: /* No password at all! */
	return "";

	case 0: /* No login - default */
	default:
	return "*";

	case 1: /* user's name */
	strncpy(pwbuf, user, sizeof pwbuf);
	pwbuf[sizeof pwbuf - 1] = '\0';
	break;
	}
	return pw_pwcrypt(pwbuf);
	}


	static int
	print_user(struct passwd * pwd, int pretty)
	{
	if (!pretty) {
	char buf[_UC_MAXLINE];

	fmtpwent(buf, pwd);
	fputs(buf, stdout);
	} else {
	int j;
	char *p;
	struct group *grp = getgrgid(pwd->pw_gid);
	char uname[60] = "User &", office[60] = "[None]",
	wphone[60] = "[None]", hphone[60] = "[None]";
	char acexpire[32] = "[None]", pwexpire[32] = "[None]";
	struct tm * tptr;

	if ((p = strtok(pwd->pw_gecos, ",")) != NULL) {
	strncpy(uname, p, sizeof uname);
	uname[sizeof uname - 1] = '\0';
	if ((p = strtok(NULL, ",")) != NULL) {
	strncpy(office, p, sizeof office);
	office[sizeof office - 1] = '\0';
	if ((p = strtok(NULL, ",")) != NULL) {
	strncpy(wphone, p, sizeof wphone);
	wphone[sizeof wphone - 1] = '\0';
	if ((p = strtok(NULL, "")) != NULL) {
	strncpy(hphone, p, sizeof hphone);
	hphone[sizeof hphone - 1] = '\0';
	}
	}
	}
	}
	/*
	* Handle '&' in gecos field
	*/
	if ((p = strchr(uname, '&')) != NULL) {
	int l = strlen(pwd->pw_name);
	int m = strlen(p);

	memmove(p + l, p + 1, m);
	memmove(p, pwd->pw_name, l);
	p = (char) toupper(p);
	}
	if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL)
	strftime(acexpire, sizeof acexpire, "%c", tptr);
	if (pwd->pw_change > (time_t)9 && (tptr = localtime(&pwd->pw_change)) != NULL)
	strftime(pwexpire, sizeof pwexpire, "%c", tptr);
	printf("Login Name: %-15s #%-12ld Group: %-15s #%ld\n"
	" Full Name: %s\n"
	" Home: %-26.26s Class: %s\n"
	" Shell: %-26.26s Office: %s\n"
	"Work Phone: %-26.26s Home Phone: %s\n"
	"Acc Expire: %-26.26s Pwd Expire: %s\n",
	pwd->pw_name, (long) pwd->pw_uid,
	grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid,
	uname, pwd->pw_dir, pwd->pw_class,
	pwd->pw_shell, office, wphone, hphone,
	acexpire, pwexpire);
	setgrent();
	j = 0;
	while ((grp=getgrent()) != NULL)
	{
	int i = 0;
	while (grp->gr_mem[i] != NULL)
	{
	if (strcmp(grp->gr_mem[i], pwd->pw_name)==0)
	{
	printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name);
	break;
	}
	++i;
	}
	}
	endgrent();
	printf("%s\n", j ? "\n" : "");
	}
	return EXIT_SUCCESS;
	}

	char *
	pw_checkname(u_char *name, int gecos)
	{
	int l = 0;
	char const notch = gecos ? ":!@" : " ,\t:+&#%$^()!@~?<>=\|\\/\"";

	while (name[l]) {
	if (strchr(notch, name[l]) != NULL \|\| name[l] < ' ' \|\| name[l] == 127 \|\|
	(!gecos && l==0 && name[l] == '-') \|\| /* leading '-' */
	(!gecos && name[l] & 0x80)) /* 8-bit */
	errx(EX_DATAERR, (name[l] >= ' ' && name[l] < 127)
	? "invalid character `%c' in field"
	: "invalid character 0x%02x in field",
	name[l]);
	++l;
	}
	if (!gecos && l > LOGNAMESIZE)
	errx(EX_DATAERR, "name too long `%s'", name);
	return (char *)name;
	}


	static void
	rmat(uid_t uid)
	{
	DIR *d = opendir("/var/at/jobs");

	if (d != NULL) {
	struct dirent *e;

	while ((e = readdir(d)) != NULL) {
	struct stat st;

	if (strncmp(e->d_name, ".lock", 5) != 0 &&
	stat(e->d_name, &st) == 0 &&
	!S_ISDIR(st.st_mode) &&
	st.st_uid == uid) {
	char tmp[MAXPATHLEN];

	sprintf(tmp, "/usr/bin/atrm %s", e->d_name);
	system(tmp);
	}
	}
	closedir(d);
	}
	}

	static void
	rmskey(char const * name)
	{
	static const char etcskey[] = "/etc/skeykeys";
	FILE *fp = fopen(etcskey, "r+");

	if (fp != NULL) {
	char tmp[1024];
	off_t atofs = 0;
	int length = strlen(name);

	while (fgets(tmp, sizeof tmp, fp) != NULL) {
	if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') {
	if (fseek(fp, atofs, SEEK_SET) == 0) {
	fwrite("#", 1, 1, fp); /* Comment username out */
	}
	break;
	}
	atofs = ftell(fp);
	}
	/*
	* If we got an error of any sort, don't update!
	*/
	fclose(fp);
	}
	}

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