Adding upstream version 1:4.13+dfsg1.upstream/1%4.13+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

10 files changed, 2767 insertions, 0 deletions

diff --git a/contrib/Makefile.am b/contrib/Makefile.am
new file mode 100644
index 0000000..5c45cb7
--- /dev/null
+++ b/contrib/Makefile.am
@@ -0,0 +1,6 @@
+# This is a dummy Makefile.am to get automake work flawlessly,
+# and also cooperate to make a distribution for `make dist'
+
+EXTRA_DIST = README adduser.c adduser.sh adduser2.sh \
+ atudel groupmems.shar pwdauth.c shadow-anonftp.patch \
+ udbachk.tgz
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new file mode 100644
index 0000000..84f3e30
--- /dev/null
+++ b/contrib/Makefile.in
@@ -0,0 +1,496 @@
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diff --git a/contrib/README b/contrib/README
new file mode 100644
index 0000000..c4d1bc0
--- /dev/null
+++ b/contrib/README
@@ -0,0 +1,10 @@
+People keep sending various adduser programs and scripts...  They are
+all in this directory.  I haven't tested them, use at your own risk.
+Anyway, the best one I've seen so far is adduser-3.x from Debian.
+
+atudel is a perl script to remove at jobs owned by the specified user
+(atrm in at-2.9 for Linux can't do that).
+
+udbachk.tgz is a passwd/group/shadow file integrity checker.
+
+--marekm
diff --git a/contrib/adduser.c b/contrib/adduser.c
new file mode 100644
index 0000000..deebd4c
--- /dev/null
+++ b/contrib/adduser.c
@@ -0,0 +1,502 @@
+/****
+** 04/21/96
+** hacked even more, replaced gets() with something slightly harder to buffer
+** overflow. Added support for setting a default quota on new account, with
+** edquota -p. Other cleanups for security, I let some users run adduser suid
+** root to add new accounts. (overflow checks, clobber environment, valid 
+** shell checks, restrictions on gid + home dir settings).
+
+** Added max. username length. Used syslog() a bit for important events. 
+** Support to immediately expire account with passwd -e.
+
+** Called it version 2.0! Because I felt like it!
+
+** -- Chris, chris@ferret.lmh.ox.ac.uk
+
+** 03/17/96
+** hacked a bit more, removed unused code, cleaned up for gcc -Wall.
+** --marekm
+**
+** 02/26/96
+** modified to call shadow utils (useradd,chage,passwd) on shadowed 
+** systems - Cristian Gafton, gafton@sorosis.ro
+**
+** 6/27/95
+** shadow-adduser 1.4:
+**
+** now it copies the /etc/skel dir into the person's dir, 
+** makes the mail folders, changed some defaults and made a 'make 
+** install' just for the hell of it.
+**
+** Greg Gallagher
+** CIN.Net
+**
+** 1/28/95
+** shadow-adduser 1.3:
+** 
+** Basically a bug-fix on my additions in 1.2.  Thanks to Terry Stewart 
+** (stew@texas.net) for pointing out one of the many idiotic bugs I introduced.
+** It was such a stupid bug that I would have never seen it myself.
+**
+**                                Brandon
+*****
+** 01/27/95
+** 
+** shadow-adduser 1.2:
+** I took the C source from adduser-shadow (credits are below) and made
+** it a little more worthwhile.  Many small changes... Here's
+** the ones I can remember:
+** 
+** Removed support for non-shadowed systems (if you don't have shadow,
+**     use the original adduser, don't get this shadow version!)
+** Added support for the correct /etc/shadow fields (Min days before
+**     password change, max days before password change, Warning days,
+**     and how many days from expiry date does the account go invalid)
+**     The previous version just left all of those fields blank.
+**     There is still one field left (expiry date for the account, period)
+**     which I have left blank because I do not use it and didn't want to
+**     spend any more time on this.  I'm sure someone will put it in and
+**     tack another plethora of credits on here. :)
+** Added in the password date field, which should always reflect the last
+**     date the password was changed, for expiry purposes.  "passwd" always
+**     updates this field, so the adduser program should set it up right
+**     initially (or a user could keep thier initial password forever ;)
+**     The number is in days since Jan 1st, 1970.
+**
+**                       Have fun with it, and someone please make
+**                       a real version(this is still just a hack)
+**                       for us all to use (and Email it to me???)
+**
+**                               Brandon
+**                                  photon@usis.com
+**
+***** 
+** adduser 1.0: add a new user account (For systems not using shadow)
+** With a nice little interface and a will to do all the work for you.
+**
+** Craig Hagan
+** hagan@opine.cs.umass.edu
+**
+** Modified to really work, look clean, and find unused uid by Chris Cappuccio
+** chris@slinky.cs.umass.edu
+**
+*****
+**
+** 01/19/95
+**
+** FURTHER modifications to enable shadow passwd support (kludged, but
+** no more so than the original)  by Dan Crowson - dcrowson@mo.net
+**
+** Search on DAN for all changes...
+**
+*****
+**
+** cc -O -o adduser adduser.c
+** Use gcc if you have it... (political reasons beyond my control) (chris)
+**
+** I've gotten this program to work with success under Linux (without
+** shadow) and SunOS 4.1.3. I would assume it should work pretty well
+** on any system that uses no shadow. (chris)
+**
+** If you have no crypt() then try
+** cc -DNO_CRYPT -O -o adduser adduser.c xfdes.c
+** I'm not sure how login operates with no crypt()... I guess
+** the same way we're doing it here.
+*/
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <pwd.h>
+#include <grp.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/timeb.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+#include <syslog.h>
+
+#define IMMEDIATE_CHANGE	/* Expire newly created password, must be changed
+				 * immediately upon next login */
+#define HAVE_QUOTAS		/* Obvious */
+#define EXPIRE_VALS_SET		/* If defined, 'normal' users can't change 
+				 * password expiry values (if running suid root) */
+
+#define HAVE_GETUSERSHELL	/* FIXME: Isn't this defined in config.h too? */
+#define LOGGING			/* If we want to log various things to syslog */
+#define MAX_USRNAME  8		/* Longer usernames seem to work on my system....
+				 * But they're probably a poor idea */
+
+
+#define DEFAULT_SHELL	"/bin/bash"	/* because BASH is your friend */
+#define DEFAULT_HOME	"/home"
+#define USERADD_PATH	"/usr/sbin/useradd"
+#define CHAGE_PATH	"/usr/bin/chage"
+#define PASSWD_PATH	"/usr/bin/passwd"
+#define EDQUOTA_PATH	"/usr/sbin/edquota"
+#define QUOTA_DEFAULT	"defuser"
+#define DEFAULT_GROUP	100
+
+#define DEFAULT_MIN_PASS 0
+#define DEFAULT_MAX_PASS 100
+#define DEFAULT_WARN_PASS 14
+#define DEFAULT_USER_DIE 366
+
+void safeget (char *, int);
+
+void 
+main (void)
+{
+  char foo[32];
+  char usrname[32], person[32], dir[32], shell[32];
+  unsigned int group, min_pass, max_pass, warn_pass, user_die;
+  /* the group and uid of the new user */
+  int bad = 0, done = 0, correct = 0, olduid;
+  char cmd[255];
+  struct group *grp;
+
+  /* flags, in order:
+   * bad to see if the username is in /etc/passwd, or if strange stuff has
+   * been typed if the user might be put in group 0
+   * done allows the program to exit when a user has been added
+   * correct loops until a username is found that isn't in /etc/passwd
+   */
+
+  /* The real program starts HERE! */
+
+  if (geteuid () != 0)
+    {
+      printf ("It seems you don't have access to add a new user.  Try\n");
+      printf ("logging in as root or su root to gain superuser access.\n");
+      exit (1);
+    }
+
+  /* Sanity checks
+   */
+
+#ifdef LOGGING
+  openlog ("adduser", LOG_PID | LOG_CONS | LOG_NOWAIT, LOG_AUTH);
+  syslog (LOG_INFO, "invoked by user %s\n", getpwuid (getuid ())->pw_name);
+#endif
+
+  if (!(grp = getgrgid (DEFAULT_GROUP)))
+    {
+      printf ("Error: the default group %d does not exist on this system!\n",
+	      DEFAULT_GROUP);
+      printf ("adduser must be recompiled.\n");
+#ifdef LOGGING
+      syslog (LOG_ERR, "warning: failed. no such default group\n");
+      closelog ();
+#endif
+      exit (1);
+    };
+
+  while (!correct)
+    {				/* loop until a "good" usrname is chosen */
+      while (!done)
+	{
+	  printf ("\nLogin to add (^C to quit): ");
+	  fflush (stdout);
+
+	  safeget (usrname, sizeof (usrname));
+
+	  if (!strlen (usrname))
+	    {
+	      printf ("Empty input.\n");
+	      done = 0;
+	      continue;
+	    };
+
+	  /* what I saw here before made me think maybe I was running DOS */
+	  /* might this be a solution? (chris) */
+	  if (strlen (usrname) > MAX_USRNAME)
+	    {
+	      printf ("That name is longer than the maximum of %d characters. Choose another.\n", MAX_USRNAME);
+	      done = 0;
+	    }
+	  else if (getpwnam (usrname) != NULL)
+	    {
+	      printf ("That name is in use, choose another.\n");
+	      done = 0;
+	    }
+	  else if (strchr (usrname, ' ') != NULL)
+	    {
+	      printf ("No spaces in username!!\n");
+	      done = 0;
+	    }
+	  else
+	    done = 1;
+	};			/* done, we have a valid new user name */
+
+      /* all set, get the rest of the stuff */
+      printf ("\nEditing information for new user [%s]\n", usrname);
+
+      printf ("\nFull Name [%s]: ", usrname);
+      fflush (stdout);
+      safeget (person, sizeof (person));
+      if (!strlen (person))
+	{
+	  bzero (person, sizeof (person));
+	  strcpy (person, usrname);
+	};
+
+      if (getuid () == 0)
+	{
+	  do
+	    {
+	      bad = 0;
+	      printf ("GID [%d]: ", DEFAULT_GROUP);
+	      fflush (stdout);
+	      safeget (foo, sizeof (foo));
+	      if (!strlen (foo))
+		group = DEFAULT_GROUP;
+	      else if (isdigit (*foo))
+		{
+		  group = atoi (foo);
+		  if (!(grp = getgrgid (group)))
+		    {
+		      printf ("unknown gid %s\n", foo);
+		      group = DEFAULT_GROUP;
+		      bad = 1;
+		    };
+		}
+	      else if ((grp = getgrnam (foo)))
+		group = grp->gr_gid;
+	      else
+		{
+		  printf ("unknown group %s\n", foo);
+		  group = DEFAULT_GROUP;
+		  bad = 1;
+		}
+	      if (group == 0)
+		{		/* You're not allowed to make root group users! */
+		  printf ("Creation of root group users not allowed (must be done by hand)\n");
+		  group = DEFAULT_GROUP;
+		  bad = 1;
+		};
+	    }
+	  while (bad);
+	}
+      else
+	{
+	  printf ("Group will be default of: %d\n", DEFAULT_GROUP);
+	  group = DEFAULT_GROUP;
+	}
+
+      if (getuid () == 0)
+	{
+	  printf ("\nIf home dir ends with a / then '%s' will be appended to it\n", usrname);
+	  printf ("Home Directory [%s/%s]: ", DEFAULT_HOME, usrname);
+	  fflush (stdout);
+	  safeget (dir, sizeof (dir));
+	  if (!strlen (dir))
+	    {			/* hit return */
+	      sprintf (dir, "%s/%s", DEFAULT_HOME, usrname);
+	    }
+	  else if (dir[strlen (dir) - 1] == '/')
+	    sprintf (dir+strlen(dir), "%s", usrname);
+	}
+      else
+	{
+	  printf ("\nHome directory will be %s/%s\n", DEFAULT_HOME, usrname);
+	  sprintf (dir, "%s/%s", DEFAULT_HOME, usrname);
+	}
+
+      printf ("\nShell [%s]: ", DEFAULT_SHELL);
+      fflush (stdout);
+      safeget (shell, sizeof (shell));
+      if (!strlen (shell))
+	sprintf (shell, "%s", DEFAULT_SHELL);
+      else
+	{
+	  char *sh;
+	  int ok = 0;
+#ifdef HAVE_GETUSERSHELL
+	  setusershell ();
+	  while ((sh = getusershell ()) != NULL)
+	    if (!strcmp (shell, sh))
+	      ok = 1;
+	  endusershell ();
+#endif
+	  if (!ok)
+	    {
+	      if (getuid () == 0)
+		printf ("Warning: root allowed non standard shell\n");
+	      else
+		{
+		  printf ("Shell NOT in /etc/shells, DEFAULT used\n");
+		  sprintf (shell, "%s", DEFAULT_SHELL);
+		}
+	    }
+	}
+
+#ifdef EXPIRE_VALS_SET
+      if (getuid () == 0)
+	{
+#endif
+	  printf ("\nMin. Password Change Days [%d]: ", DEFAULT_MIN_PASS);
+	  fflush (stdout);
+	  safeget (foo, sizeof (foo));
+	  if (strlen (foo) > 1)
+	    min_pass = DEFAULT_MIN_PASS;
+	  else
+	    min_pass = atoi (foo);
+
+	  printf ("Max. Password Change Days [%d]: ", DEFAULT_MAX_PASS);
+	  fflush (stdout);
+	  safeget (foo, sizeof (foo));
+	  if (strlen (foo) > 1)
+	    max_pass = atoi (foo);
+	  else
+	    max_pass = DEFAULT_MAX_PASS;
+
+	  printf ("Password Warning Days [%d]: ", DEFAULT_WARN_PASS);
+	  fflush (stdout);
+	  safeget (foo, sizeof (foo));
+	  warn_pass = atoi (foo);
+	  if (warn_pass == 0)
+
+	    warn_pass = DEFAULT_WARN_PASS;
+
+	  printf ("Days after Password Expiry for Account Locking [%d]: ", DEFAULT_USER_DIE);
+	  fflush (stdout);
+	  safeget (foo, sizeof (foo));
+	  user_die = atoi (foo);
+	  if (user_die == 0)
+	    user_die = DEFAULT_USER_DIE;
+
+#ifdef EXPIRE_VALS_SET
+	}
+      else
+	{
+	  printf ("\nSorry, account expiry values are set.\n");
+	  user_die = DEFAULT_USER_DIE;
+	  warn_pass = DEFAULT_WARN_PASS;
+	  max_pass = DEFAULT_MAX_PASS;
+	  min_pass = DEFAULT_MIN_PASS;
+	}
+#endif
+
+      printf ("\nInformation for new user [%s] [%s]:\n", usrname, person);
+      printf ("Home directory: [%s] Shell: [%s]\n", dir, shell);
+      printf ("GID: [%d]\n", group);
+      printf ("MinPass: [%d] MaxPass: [%d] WarnPass: [%d] UserExpire: [%d]\n",
+	      min_pass, max_pass, warn_pass, user_die);
+      printf ("\nIs this correct? [y/N]: ");
+      fflush (stdout);
+      safeget (foo, sizeof (foo));
+
+      done = bad = correct = (foo[0] == 'y' || foo[0] == 'Y');
+
+      if (bad != 1)
+	printf ("\nUser [%s] not added\n", usrname);
+    }
+
+  /* Clobber the environment, I run this suid root sometimes to let 
+   * non root privileged accounts add users --chris */
+
+  *environ = NULL;
+
+  bzero (cmd, sizeof (cmd));
+  sprintf (cmd, "%s -g %d -d %s -s %s -c \"%s\" -m -k /etc/skel %s",
+	   USERADD_PATH, group, dir, shell, person, usrname);
+  printf ("Calling useradd to add new user:\n%s\n", cmd);
+  if (system (cmd))
+    {
+      printf ("User add failed!\n");
+#ifdef LOGGING
+      syslog (LOG_ERR, "could not add new user\n");
+      closelog ();
+#endif
+      exit (errno);
+    };
+
+  olduid = getuid ();	/* chage, passwd, edquota etc. require ruid = root
+			 */
+  setuid (0);
+
+  bzero (cmd, sizeof (cmd));
+
+  /* Chage runs suid root. => we need ruid root to run it with
+   * anything other than chage -l
+   */
+
+  sprintf (cmd, "%s -m %d -M %d -W %d -I %d %s", CHAGE_PATH,
+	   min_pass, max_pass, warn_pass, user_die, usrname);
+  printf ("%s\n", cmd);
+  if (system (cmd))
+    {
+      printf ("There was an error setting password expire values\n");
+#ifdef LOGGING
+      syslog (LOG_ERR, "password expire values could not be set\n");
+#endif
+    };
+
+  /* I want to add a user completely with one easy command --chris */
+
+#ifdef HAVE_QUOTAS
+  bzero (cmd, sizeof (cmd));
+  sprintf (cmd, "%s -p %s -u %s", EDQUOTA_PATH, QUOTA_DEFAULT, usrname);
+  printf ("%s\n", cmd);
+  if (system (cmd))
+    {
+      printf ("\nWarning: error setting quota\n");
+#ifdef LOGGING
+      syslog (LOG_ERR, "warning: account created but NO quotas set!\n");
+#endif /* LOGGING */
+    }
+  else
+    printf ("\nDefault quota set.\n");
+#endif /* HAVE_QUOTAS */
+
+  bzero (cmd, sizeof (cmd));
+  sprintf (cmd, "%s %s", PASSWD_PATH, usrname);
+  if (system (cmd))
+    {
+      printf ("\nWarning: error setting password\n");
+#ifdef LOGGING
+      syslog (LOG_ERR, "warning: password set failed!\n");
+#endif
+    }
+#ifdef IMMEDIATE_CHANGE
+  bzero (cmd, sizeof (cmd));
+  sprintf (cmd, "%s -e %s", PASSWD_PATH, usrname);
+  if (system (cmd))
+    {
+      printf ("\nWarning: error expiring password\n");
+#ifdef LOGGING
+      syslog (LOG_ERR, "warning: password expire failed!\n");
+#endif /* LOGGING */
+    }
+#endif /* IMMEDIATE_CHANGE */
+
+  setuid (olduid);
+
+#ifdef LOGGING
+  closelog ();
+#endif
+
+  printf ("\nDone.\n");
+}
+
+void 
+safeget (char *buf, int maxlen)
+{
+  int c, i = 0, bad = 0;
+  char *bstart = buf;
+  while ((c = getc (stdin)) != EOF && (c != '\n') && (++i < maxlen))
+    {
+      bad = (!isalnum (c) && (c != '_') && (c != ' '));
+      *(buf++) = (char) c;
+    }
+  *buf = '\0';
+
+  if (bad)
+    {
+      printf ("\nString contained banned character. Please stick to alphanumerics.\n");
+      *bstart = '\0';
+    }
+}
+
diff --git a/contrib/adduser.sh b/contrib/adduser.sh
new file mode 100755
index 0000000..0efb27a
--- /dev/null
+++ b/contrib/adduser.sh
@@ -0,0 +1,90 @@
+#!/bin/sh
+# adduser script for use with shadow passwords and useradd command.
+# by Hrvoje Dogan <hdogan@student.math.hr>, Dec 1995.
+
+echo -n "Login name for new user []:"
+read LOGIN
+if [ -z $LOGIN ]
+then echo "Come on, man, you can't leave the login field empty...";exit
+fi
+echo
+echo -n "User id for $LOGIN [ defaults to next available]:"
+read ID
+GUID="-u $ID"
+if [ -z $ID ] 
+then GUID=""
+fi
+
+echo
+echo -n "Initial group for $LOGIN [users]:"
+read GID
+GGID="-g $GID"
+if [ -z $GID ]
+then GGID=""
+fi
+
+echo
+echo -n "Additional groups for $LOGIN []:"
+read AGID
+GAGID="-G $AGID"
+if [ -z $AGID ]
+then GAGID=""
+fi
+
+echo
+echo -n "$LOGIN's home directory [/home/$LOGIN]:"
+read HME
+GHME="-d $HME"
+if [ -z $HME ]
+then GHME=""
+fi
+
+echo
+echo -n "$LOGIN's shell [/bin/bash]:"
+read SHL
+GSHL="-s $SHL"
+if [ -z $SHL ]
+then GSHL=""
+fi
+
+echo
+echo -n "$LOGIN's account expiry date (MM/DD/YY) []:"
+read EXP
+GEXP="-e $EXP"
+if [ -z $EXP ]
+then GEXP=""
+fi
+echo
+echo OK, I'm about to make a new account. Here's what you entered so far:
+echo New login name: $LOGIN
+if [ -z $GUID ] 
+then echo New UID: [Next available]
+else echo New UID: $UID
+fi
+if [ -z $GGID ]
+then echo Initial group: users
+else echo Initial group: $GID
+fi
+if [ -z $GAGID ]
+then echo Additional groups: [none]
+else echo Additional groups: $AGID
+fi
+if [ -z $GHME ]
+then echo Home directory: /home/$LOGIN
+else echo Home directory: $HME
+fi
+if [ -z $GSHL ]
+then echo Shell: /bin/bash
+else echo Shell: $SHL
+fi
+if [ -z $GEXP ]
+then echo Expiry date: [no expiration]
+else echo Expiry date: $EXP
+fi
+echo "This is it... if you want to bail out, you'd better do it now."
+read FOO
+echo Making new account...
+/usr/sbin/useradd $GHME -m $GEXP $GGID $GAGID $GSHL $GUID $LOGIN
+/usr/bin/chfn $LOGIN
+/usr/bin/passwd $LOGIN
+echo "Done..."
diff --git a/contrib/adduser2.sh b/contrib/adduser2.sh
new file mode 100755
index 0000000..7656d02
--- /dev/null
+++ b/contrib/adduser2.sh
@@ -0,0 +1,743 @@
+#!/bin/bash
+#
+#  adduser			Interactive user adding program.
+#
+#  Copyright (C) 1996		Petri Mattila, Prihateam Networks
+#				petri@prihateam.fi
+#	
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2, or (at your option)
+#  any later version.
+#
+# Changes:
+#	220496	v0.01	Initial version
+#	230496	v0.02	More checks, embolden summary
+#	240496		Even more checks
+#	250496 		Help with ?
+#	040596	v0.03	Cleanups
+#	050596	v0.04	Bug fixes, expire date checks
+#	070596	v0.05	Iso-latin-1 names
+#
+
+## Defaults
+
+# default groups
+def_group="users"
+def_other_groups=""
+
+# default home directory
+def_home_dir=/home/users
+
+# default shell
+def_shell=/bin/tcsh
+
+# Default expiration date (mm/dd/yy)
+def_expire=""
+
+# default dates
+def_pwd_min=0
+def_pwd_max=90
+def_pwd_warn=14
+def_pwd_iact=14
+
+
+# possible UIDs
+uid_low=1000
+uid_high=64000
+
+# skel directory
+skel=/etc/skel
+
+# default mode for home directory
+def_mode=711
+
+# Regex, that the login name must meet, only ANSI characters
+login_regex='^[0-9a-zA-Z_-]*$'
+
+# Regex, that the user name must meet
+# ANSI version
+##name_regex='^[0-9a-zA-Z_-\ ]*$'
+# ISO-LATIN-1 version
+name_regex='^[0-9a-zA-ZÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõöùúûüýþÿ_-\ ]*$'
+
+# set PATH
+export PATH="/bin:/sbin:/usr/bin:/usr/sbin"
+
+# Some special characters
+case "$TERM" in
+   vt*|ansi*|con*|xterm*|linux*)
+	S=''	# start embolden
+	E=''	# end embolden
+	;;
+   *)	
+	S=''
+	E=''
+	;;
+esac
+
+
+## Functions
+
+check_root() {
+	if test "$EUID" -ne 0
+	then
+		echo "You must be root to run this program."
+		exit 1
+	fi
+}
+
+check_user() {
+	local usr pwd uid gid name home sh
+
+	cat /etc/passwd | (
+		while IFS=":" read usr pwd uid gid name home sh
+		do
+			if test "$1" = "${usr}"
+			then
+				return 1
+			fi
+		done
+		return 0
+	)
+}
+
+check_group() {
+	local read grp pwd gid members
+
+	cat /etc/group | (
+		while IFS=":" read grp pwd gid members
+		do
+			if test "$1" = "${grp}"
+			then
+				return 1
+			fi
+		done
+		return 0
+	)
+}
+
+check_other_groups() {
+	local grp check IFS
+
+	check="$1"
+	IFS=","
+
+	set ${check}
+	for grp
+	do
+		if check_group "${grp}"
+		then
+			echo "Group ${grp} does not exist."
+			return 1
+		fi
+	done
+	return 0
+}		
+
+check_uid() {
+	local usr pwd uid gid name home sh
+	
+	cat /etc/passwd | (
+		while IFS=":" read usr pwd uid gid name home sh
+		do
+			if test "$1" = "${uid}"
+			then
+				return 1
+			fi
+		done
+		return 0
+	)
+}
+
+read_yn() {
+	local ans ynd
+	
+	ynd="$1"
+	
+	while :
+	do
+		read ans	
+		case "${ans}" in
+		      "") return ${ynd} ;;
+		    [nN]) return 1 ;;
+		    [yY]) return 0 ;;
+		       *) echo -n "Y or N, please ? " ;;
+		esac
+	done
+}
+
+read_login() {
+	echo
+	while :
+	do
+		echo -n "Login: ${def_login:+[${def_login}] }"
+		read login
+		
+		if test "${login}" = '?'
+		then
+			less /etc/passwd
+			echo
+			continue
+		fi
+
+		if test -z "${login}" -a -n "${def_login}"
+		then
+			login="${def_login}"
+			echo "Using ${login}"
+			return
+		fi
+		
+		if test "${#login}" -gt 8
+		then
+			echo "Login must be at most 8 characters long"
+			continue
+		fi
+		
+		if test "${#login}" -lt 2
+		then
+			echo "Login must be at least 2 characters long"
+			continue
+		fi
+		
+		if ! expr "${login}" : "${login_regex}" &> /dev/null
+		then
+			echo "Please use letters, numbers and special characters _-,."
+			continue
+		fi
+		
+		if ! check_user "${login}"
+		then
+			echo "Username ${login} is already in use"
+			continue
+		fi
+		
+		def_login="${login}"
+		return
+	done
+}
+
+read_name () {
+	echo
+	while :
+	do
+		echo -n "Real name: ${def_name:+[${def_name}] }"
+		read name
+		
+		if test "${name}" = '?'
+		then
+			less /etc/passwd
+			echo
+			continue
+		fi
+
+		if test -z "${name}" -a -n "${def_name}"
+		then
+			name="${def_name}"
+			echo "Using ${name}"
+		fi
+
+		if test "${#name}" -gt 32
+		then
+			echo "Name should be at most 32 characters long"
+			continue
+		fi
+
+		if ! expr "${name}" : "${name_regex}" &> /dev/null
+		then
+			echo "Please use letters, numbers, spaces and special characters ,._-"
+			continue
+		fi
+		
+		def_name="${name}"
+		return
+	done
+}
+
+read_home() {
+	local x
+	
+	echo
+	while :
+	do
+		echo -n "Home Directory: [${def_home_dir}/${login}] "
+		read home
+		
+		if test -z "${home}"
+		then
+			home="${def_home_dir}/${login}"
+			echo "Using ${home}"
+		fi
+		
+		if ! expr "${home}" : '^[0-9a-zA-Z,._-\/]*$' &> /dev/null
+		then
+			echo "Please use letters, numbers, spaces and special characters ,._-/"
+			continue
+		fi
+		
+		x="$(basename ${home})"
+		if test "${x}" != "${login}"
+		then
+			echo "Warning: you are about to use different login name and home directory."
+		fi
+		
+		x="$(dirname ${home})"
+		if ! test -d "${x}"
+		then
+			echo "Directory ${x} does not exist."
+			echo "If you still want to use it, please make it manually."
+			continue
+		fi
+		
+		def_home_dir="${x}"
+		return
+	done
+}
+
+read_shell () {
+	local x
+
+	echo
+	while :
+	do
+		echo -n "Shell: [${def_shell}] "
+		read shell
+		
+		if test -z "${shell}"
+		then
+			shell="${def_shell}"
+			echo "Using ${shell}"
+		fi
+		
+		for x in $(cat /etc/shells)
+		do
+			if test "${x}" = "${shell}"
+			then
+				def_shell="${shell}"
+				return
+			fi
+		done
+
+		echo "Possible shells are:"
+		cat /etc/shells
+	done
+}
+
+read_group () {
+	echo
+	while :
+	do
+		echo -n "Group: [${def_group}] "
+		read group
+		
+		if test -z "${group}"
+		then
+			group="${def_group}"
+			echo "Using ${group}"
+		fi
+		
+		if test "${group}" = '?'
+		then
+			less /etc/group
+			echo
+			continue
+		fi
+
+		if check_group "${group}"
+		then
+			echo "Group ${group} does not exist."
+			continue
+		fi
+		
+		def_group="${group}"
+		return
+	done
+}
+
+read_other_groups () {
+	echo
+	while :
+	do
+		echo -n "Other groups: [${def_og:-none}] "
+		read other_groups
+		
+		if test "${other_groups}" = '?'
+		then
+			less /etc/group
+			echo
+			continue
+		fi
+
+		if test -z "${other_groups}"
+		then
+			if test -n "${def_og}"
+			then
+				other_groups="${def_og}"
+				echo "Using ${other_groups}"
+			else	
+				echo "No other groups"
+				return
+			fi
+		fi
+		
+		
+		if ! check_other_groups "${other_groups}"
+		then
+			continue
+		fi
+		
+		def_og="${other_groups}"
+		return
+	done
+}
+
+read_uid () {
+	echo
+	while :
+	do
+		echo -n "uid: [first free] "
+		read uid
+			
+		if test -z "${uid}"
+		then
+			echo "Using first free UID."
+			return
+		fi
+		
+		if test "${uid}" = '?'
+		then
+			less /etc/passwd
+			echo
+			continue
+		fi
+
+		if ! expr "${uid}" : '^[0-9]+$' &> /dev/null
+		then
+			echo "Please use numbers only."
+			continue
+		fi
+		if test "${uid}" -lt "${uid_low}"
+		then
+			echo "UID must be greater than ${uid_low}"
+			continue
+		fi
+		if test "${uid}" -gt "${uid_high}"
+		then
+			echo "UID must be smaller than ${uid_high}"
+			continue
+		fi
+		if ! check_uid "${uid}"
+		then
+			echo "UID ${uid} is already in use"
+			continue
+		fi
+		
+		return
+	done
+}
+
+read_max_valid_days() {
+	echo
+	while :
+	do
+		echo -en "Maximum days between password changes: [${def_pwd_max}] "
+		read max_days
+		
+		if test -z "${max_days}"
+		then
+			max_days="${def_pwd_max}"
+			echo "Using ${max_days}"
+			return
+		fi
+		
+		if ! expr "${max_days}" : '^[0-9]+$' &> /dev/null
+		then
+			echo "Please use numbers only."
+			continue
+		fi
+		if test "${max_days}" -lt 7
+		then
+			echo "Warning: you are using a value shorter than a week."
+		fi
+		
+		def_pwd_max="${max_days}"
+		return	
+	done
+}
+
+read_min_valid_days() {
+	echo
+	while :
+	do
+		echo -en "Minimum days between password changes: [${def_pwd_min}] "
+		read min_days
+		
+		if test -z "${min_days}"
+		then
+			min_days="${def_pwd_min}"
+			echo "Using ${min_days}"
+			return
+		fi
+		
+		if ! expr "${min_days}" : '^[0-9]+$' &> /dev/null
+		then
+			echo "Please use numbers only."
+			continue
+		fi
+		if test "${min_days}" -gt 7
+		then
+			echo "Warning: you are using a value longer than a week."
+		fi
+		
+		def_pwd_min="${min_days}"
+		return	
+	done
+}
+
+read_warning_days() {
+	echo
+	while :
+	do
+		echo -en "Number of warning days before password expires: [${def_pwd_warn}] "
+		read warn_days
+		
+		if test -z "${warn_days}"
+		then
+			warn_days="${def_pwd_warn}"
+			echo "Using ${warn_days}"
+		fi
+
+		if ! expr "${warn_days}" : '^[0-9]+$' &> /dev/null
+		then
+			echo "Please use numbers only."
+			continue
+		fi
+		if test "${warn_days}" -gt 14
+		then
+			echo "Warning: you are using a value longer than two week."
+		fi
+		
+		def_pwd_warn="${warn_days}"
+		return	
+	done
+}
+
+
+read_inactive_days() {
+	echo
+	while :
+	do
+		echo -en "Number of usable days after expiration: [${def_pwd_iact}] "
+		read iact_days
+		
+		if test -z "${iact_days}"
+		then
+			iact_days="${def_pwd_iact}"
+			echo "Using ${iact_days}"
+			return
+		fi
+		if ! expr "${iact_days}" : '^[0-9]+$' &> /dev/null
+		then
+			echo "Please use numbers only."
+			continue
+		fi
+		if test "${iact_days}" -gt 14
+		then
+			echo "Warning: you are using a value that is more than two weeks."
+		fi
+		
+		def_pwd_iact="${iact_days}"
+		return	
+	done
+}
+
+read_expire_date() {
+	local ans
+	
+	echo
+	while :
+	do
+		echo -en "Expire date of this account (mm/dd/yy): [${def_expire:-never}] "
+		read ans
+		
+		if test -z "${ans}"
+		then
+			if test -z "${def_expire}"
+			then
+				ans="never"
+			else
+				ans="${def_expire}"
+				echo "Using ${def_expire}"
+			fi
+		fi
+		
+		if test "${ans}" = "never"
+		then
+			echo "Account will never expire."
+			def_expire=""
+			expire=""
+			return
+		fi
+
+		if ! expr "${ans}" : '^[0-9][0-9]/[0-9][0-9]/[0-9][0-9]$' &> /dev/null
+		then
+			echo "Please use format mm/dd/yy"
+			continue
+		fi
+		
+		if ! expire_date="$(date -d ${ans} '+%A, %B %d %Y')"
+		then
+			continue
+		fi
+		
+		def_expire="${expire}"
+		return	
+	done
+}
+
+read_passwd_yn() {
+	echo -en "\nDo you want to set password [Y/n] ? "
+	if read_yn 0
+	then
+		set_pwd="YES"
+	else
+		set_pwd=""
+	fi
+}
+
+
+print_values() {
+
+clear
+cat << EOM
+
+Login:        ${S}${login}${E}
+Group:        ${S}${group}${E}
+Other groups: ${S}${other_groups:-[none]}${E}
+
+Real Name:    ${S}${name}${E}
+
+uid:          ${S}${uid:-[first free]}${E}
+home:         ${S}${home}${E}
+shell:        ${S}${shell}${E}
+
+Account expiration date:                   ${S}${expire_date:-never}${E}
+Minimum days between password changes:     ${S}${min_days}${E}
+Maximum days between password changes:     ${S}${max_days}${E}
+Number of usable days after expiration:    ${S}${iact_days}${E}
+Number of warning days before expiration:  ${S}${warn_days}${E}
+
+${S}${set_pwd:+Set password for this account.}${E}
+
+EOM
+}
+
+set_user() {
+	if ! useradd \
+		-c "${name}" \
+		-d "${home}" \
+		-g "${group}" \
+		-s "${shell}" \
+		${expire:+-e ${expire}} \
+		${uid:+-u ${uid}} \
+		${other_groups:+-G ${other_groups}} \
+		${login}
+	then
+		echo "Error ($?) in useradd...exiting..."
+		exit 1
+	fi
+}
+
+set_aging() {
+	if ! passwd \
+		-x ${max_days} \
+		-n ${min_days} \
+		-w ${warn_days} \
+		-i ${iact_days} \
+		${login}
+	then
+		echo "Error ($?) in setting password aging...exiting..." 
+		exit 1
+	fi
+}
+
+set_password() {
+	if test -n "${set_pwd}"
+	then
+		echo
+		passwd ${login}
+		echo
+	fi
+}	
+
+set_system() {
+	if test -d "${home}"
+	then
+		echo "Directory ${home} already exists."
+		echo "Skeleton files not copied."
+		return
+	fi
+	
+	echo -n "Copying skeleton files..."
+	( 
+	  mkdir ${home}
+	  cd ${skel} && cp -af . ${home}
+	  chmod ${def_mode} ${home}
+	  chown -R ${login}:${group} ${home}
+	)
+	echo "done."
+
+	## Add your own stuff here:
+	echo -n "Setting up other files..."
+	(
+	  mailbox="/var/spool/mail/${login}"
+	  touch ${mailbox}
+	  chown "${login}:mail" ${mailbox}
+	  chmod 600 ${mailbox}
+	)
+	echo "done."
+}
+
+
+read_values() {
+	clear
+	echo -e "\nPlease answer the following questions about the new user to be added."
+	
+	while :
+	do
+		read_login
+		read_name
+		read_group
+		read_other_groups
+		read_home
+		read_shell
+		read_uid
+		read_expire_date
+		read_max_valid_days
+		read_min_valid_days
+		read_warning_days
+		read_inactive_days
+		read_passwd_yn
+
+		print_values
+		
+		echo -n "Is this correct [N/y] ? "
+		read_yn 1 && return
+	done
+}
+
+
+main() {
+	check_root
+	read_values
+	set_user
+	set_aging
+	set_system
+	set_password
+}
+
+
+## Run it 8-)
+main
+
+# End.
diff --git a/contrib/groupmems.shar b/contrib/groupmems.shar
new file mode 100644
index 0000000..62e9b48
--- /dev/null
+++ b/contrib/groupmems.shar
@@ -0,0 +1,465 @@
+#!/bin/sh
+# This is a shell archive (produced by GNU sharutils 4.2.1).
+# To extract the files from this archive, save it to some FILE, remove
+# everything before the `!/bin/sh' line above, then type `sh FILE'.
+#
+# Made on 2000-05-25 14:41 CDT by <gk4@gnu.austin.ibm.com>.
+# Source directory was `/home/gk4/src/groupmem'.
+#
+# Existing files will *not* be overwritten unless `-c' is specified.
+#
+# This shar contains:
+# length mode       name
+# ------ ---------- ------------------------------------------
+#   1960 -rw-r--r-- Makefile
+#   6348 -rw-r--r-- groupmems.c
+#   3372 -rw------- groupmems.8
+#
+save_IFS="${IFS}"
+IFS="${IFS}:"
+gettext_dir=FAILED
+locale_dir=FAILED
+first_param="$1"
+for dir in $PATH
+do
+  if test "$gettext_dir" = FAILED && test -f $dir/gettext \
+     && ($dir/gettext --version >/dev/null 2>&1)
+  then
+    set `$dir/gettext --version 2>&1`
+    if test "$3" = GNU
+    then
+      gettext_dir=$dir
+    fi
+  fi
+  if test "$locale_dir" = FAILED && test -f $dir/shar \
+     && ($dir/shar --print-text-domain-dir >/dev/null 2>&1)
+  then
+    locale_dir=`$dir/shar --print-text-domain-dir`
+  fi
+done
+IFS="$save_IFS"
+if test "$locale_dir" = FAILED || test "$gettext_dir" = FAILED
+then
+  echo=echo
+else
+  TEXTDOMAINDIR=$locale_dir
+  export TEXTDOMAINDIR
+  TEXTDOMAIN=sharutils
+  export TEXTDOMAIN
+  echo="$gettext_dir/gettext -s"
+fi
+if touch -am -t 200112312359.59 $$.touch >/dev/null 2>&1 && test ! -f 200112312359.59 -a -f $$.touch; then
+  shar_touch='touch -am -t $1$2$3$4$5$6.$7 "$8"'
+elif touch -am 123123592001.59 $$.touch >/dev/null 2>&1 && test ! -f 123123592001.59 -a ! -f 123123592001.5 -a -f $$.touch; then
+  shar_touch='touch -am $3$4$5$6$1$2.$7 "$8"'
+elif touch -am 1231235901 $$.touch >/dev/null 2>&1 && test ! -f 1231235901 -a -f $$.touch; then
+  shar_touch='touch -am $3$4$5$6$2 "$8"'
+else
+  shar_touch=:
+  echo
+  $echo 'WARNING: not restoring timestamps.  Consider getting and'
+  $echo "installing GNU \`touch', distributed in GNU File Utilities..."
+  echo
+fi
+rm -f 200112312359.59 123123592001.59 123123592001.5 1231235901 $$.touch
+#
+if mkdir _sh10937; then
+  $echo 'x -' 'creating lock directory'
+else
+  $echo 'failed to create lock directory'
+  exit 1
+fi
+# ============= Makefile ==============
+if test -f 'Makefile' && test "$first_param" != -c; then
+  $echo 'x -' SKIPPING 'Makefile' '(file already exists)'
+else
+  $echo 'x -' extracting 'Makefile' '(text)'
+  sed 's/^X//' << 'SHAR_EOF' > 'Makefile' &&
+/*
+# SPDX-FileCopyrightText: 2000, International Business Machines, Inc.
+# SPDX-FileCopyrightText: 2000, George Kraft IV, gk4@us.ibm.com
+# SPDX-License-Identifier: BSD-3-Clause
+# 
+X
+all: groupmems
+X
+groupmems: groupmems.c
+X	cc -g -o groupmems groupmems.c -L. -lshadow
+X
+install: groupmems
+X	-/usr/sbin/groupadd groups
+X	install -o root -g groups -m 4770 groupmems /usr/bin
+X
+install.man: groupmems.8
+X	install -o root -g root -m 644 groupmems.8 /usr/man/man8
+X
+SHAR_EOF
+  (set 20 00 05 25 14 40 28 'Makefile'; eval "$shar_touch") &&
+  chmod 0644 'Makefile' ||
+  $echo 'restore of' 'Makefile' 'failed'
+  if ( md5sum --help 2>&1 | grep 'sage: md5sum \[' ) >/dev/null 2>&1 \
+  && ( md5sum --version 2>&1 | grep -v 'textutils 1.12' ) >/dev/null; then
+    md5sum -c << SHAR_EOF >/dev/null 2>&1 \
+    || $echo 'Makefile:' 'MD5 check failed'
+b46cf7ef8d59149093c011ced3f3103c  Makefile
+SHAR_EOF
+  else
+    shar_count="`LC_ALL= LC_CTYPE= LANG= wc -c < 'Makefile'`"
+    test 1960 -eq "$shar_count" ||
+    $echo 'Makefile:' 'original size' '1960,' 'current size' "$shar_count!"
+  fi
+fi
+# ============= groupmems.c ==============
+if test -f 'groupmems.c' && test "$first_param" != -c; then
+  $echo 'x -' SKIPPING 'groupmems.c' '(file already exists)'
+else
+  $echo 'x -' extracting 'groupmems.c' '(text)'
+  sed 's/^X//' << 'SHAR_EOF' > 'groupmems.c' &&
+/*
+X * SPDX-FileCopyrightText: 2000, International Business Machines, Inc.
+X * SPDX-FileCopyrightText: 2000, George Kraft IV, gk4@us.ibm.com
+X * SPDX-License-Identifier: BSD-3-Clause
+X */
+/*
+**
+**	Utility "groupmem" adds and deletes members from a user's group.
+**	
+**	Setup (as "root"):
+**	
+**		groupadd -r groups 
+**		chmod 2770 groupmems
+**		chown root.groups groupmems
+**		groupmems -g groups -a gk4
+**	
+**	Usage (as "gk4"):
+**	
+**		groupmems -a olive
+**		groupmems -a jordan
+**		groupmems -a meghan
+**		groupmems -a morgan
+**		groupmems -a jake
+**		groupmems -l 
+**		groupmems -d jake
+**		groupmems -l 
+*/
+X
+#include <stdio.h>
+#include <pwd.h>
+#include <grp.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include "defines.h"
+#include "groupio.h"
+X
+/* Exit Status Values */
+X
+#define EXIT_SUCCESS		0	/* success */
+#define EXIT_USAGE		1	/* invalid command syntax */
+#define EXIT_GROUP_FILE		2	/* group file access problems */
+#define EXIT_NOT_ROOT		3	/* not superuser  */
+#define EXIT_NOT_EROOT		4	/* not effective superuser  */
+#define EXIT_NOT_PRIMARY	5	/* not primary owner of group  */
+#define EXIT_NOT_MEMBER		6	/* member of group does not exist */
+#define EXIT_MEMBER_EXISTS	7	/* member of group already exists */
+X
+#define TRUE 1
+#define FALSE 0
+X
+/* Globals */
+X
+extern int optind;
+extern char *optarg;
+static char *adduser = NULL;
+static char *deluser = NULL;
+static char *thisgroup = NULL;
+static int purge = FALSE;
+static int list = FALSE;
+static int exclusive = 0;
+X
+static int isroot(void) {
+X	return getuid() ? FALSE : TRUE;
+}
+X
+static int isgroup(void) {
+X	gid_t g = getgid();
+X	struct group *grp = getgrgid(g);
+X
+X	return TRUE;
+}
+X
+static char *whoami(void) {
+X	struct group *grp = getgrgid(getgid());
+X	struct passwd *usr = getpwuid(getuid());
+X
+X	if (0 == strcmp(usr->pw_name, grp->gr_name)) {
+X		return (char *)strdup(usr->pw_name);
+X	} else {
+X		return NULL;
+X	} 
+}
+X
+static void
+addtogroup(char *user, char **members) {
+X	int i;
+X	char **pmembers;
+X
+X	for (i = 0; NULL != members[i]; i++ ) {
+X		if (0 == strcmp(user, members[i])) {
+X			fprintf(stderr, "Member already exists\n");
+X			exit(EXIT_MEMBER_EXISTS);
+X		}
+X	}
+X
+X	if (0 == i) {
+X		pmembers = (char **)calloc(2, sizeof(char *));
+X	} else {
+X		pmembers = (char **)realloc(members, sizeof(char *)*(i+1));
+X	}
+X
+X	*members = *pmembers;
+X	members[i] = user;
+X	members[i+1] = NULL;
+}
+X
+static void
+rmfromgroup(char *user, char **members) {
+X	int i;
+X	int found = FALSE;
+X
+X	i = 0;
+X	while (!found && NULL != members[i]) {
+X		if (0 == strcmp(user, members[i])) {
+X			found = TRUE;
+X		} else {
+X			i++;
+X		}
+X	}
+X
+X	while (found && NULL != members[i]) {
+X		members[i] = members[++i];
+X	}
+X
+X	if (!found) {
+X		fprintf(stderr, "Member to remove could not be found\n");
+X		exit(EXIT_NOT_MEMBER);
+X	}
+}
+X
+static void
+nomembers(char **members) {
+X	int i;
+X
+X	for (i = 0; NULL != members[i]; i++ ) {
+X		members[i] = NULL;
+X	}
+}
+X
+static void
+members(char **members) {
+X	int i;
+X
+X	for (i = 0; NULL != members[i]; i++ ) {
+X		printf("%s ", members[i]);
+X
+X		if (NULL == members[i+1]) {
+X			printf("\n");
+X		} else {
+X			printf(" ");
+X		}
+X	}
+}
+X
+static void usage(void) {
+X	fprintf(stderr, "usage: groupmems -a username | -d username | -D | -l [-g groupname]\n");
+X	exit(EXIT_USAGE);
+}
+X
+main(int argc, char **argv) {
+X	int arg, i;
+X	char *name;
+X	struct group *grp;
+X
+X	while ((arg = getopt(argc, argv, "a:d:g:Dl")) != EOF) {
+X		switch (arg) {
+X		case 'a':
+X			adduser = strdup(optarg);
+X			++exclusive;
+X			break;
+X		case 'd':
+X			deluser = strdup(optarg);
+X			++exclusive;
+X			break;
+X		case 'g':
+X			thisgroup = strdup(optarg);
+X			break;
+X		case 'D':
+X			purge = TRUE;
+X			++exclusive;
+X			break;
+X		case 'l':
+X			list = TRUE;
+X			++exclusive;
+X			break;
+X		default:
+X			usage();
+X		}
+X	}
+X
+X	if (exclusive > 1 || optind < argc) {
+X		usage();
+X	}
+X
+X	if (!isroot() && NULL != thisgroup) {
+X		fprintf(stderr, "Only root can add members to different groups\n");
+X		exit(EXIT_NOT_ROOT);
+X	} else if (isroot() && NULL != thisgroup) {
+X		name = thisgroup;
+X	} else if (!isgroup()) {
+X		fprintf(stderr, "Group access is required\n");
+X		exit(EXIT_NOT_EROOT);
+X	} else if (NULL == (name = whoami())) {
+X		fprintf(stderr, "Not primary owner of current group\n");
+X		exit(EXIT_NOT_PRIMARY);
+X	}
+X
+X	if (!gr_lock()) {
+X		fprintf(stderr, "Unable to lock group file\n");
+X		exit(EXIT_GROUP_FILE);
+X	}
+X
+X	if (!gr_open(O_RDWR)) {
+X		fprintf(stderr, "Unable to open group file\n");
+X		exit(EXIT_GROUP_FILE);
+X	}
+X
+X	grp = (struct group *)gr_locate(name);
+X
+X	if (NULL != adduser) {
+X		addtogroup(adduser, grp->gr_mem);
+X		gr_update(grp);
+X	} else if (NULL != deluser) {
+X		rmfromgroup(deluser, grp->gr_mem);
+X		gr_update(grp);
+X	} else if (purge) {
+X		nomembers(grp->gr_mem);
+X		gr_update(grp);
+X	} else if (list) {
+X		members(grp->gr_mem);
+X	}
+X
+X	if (!gr_close()) {
+X		fprintf(stderr, "Cannot close group file\n");
+X		exit(EXIT_GROUP_FILE);
+X	}
+X
+X	gr_unlock();
+X
+X	exit(EXIT_SUCCESS);
+}
+X
+/* EOF */
+SHAR_EOF
+  (set 20 00 05 25 14 36 38 'groupmems.c'; eval "$shar_touch") &&
+  chmod 0644 'groupmems.c' ||
+  $echo 'restore of' 'groupmems.c' 'failed'
+  if ( md5sum --help 2>&1 | grep 'sage: md5sum \[' ) >/dev/null 2>&1 \
+  && ( md5sum --version 2>&1 | grep -v 'textutils 1.12' ) >/dev/null; then
+    md5sum -c << SHAR_EOF >/dev/null 2>&1 \
+    || $echo 'groupmems.c:' 'MD5 check failed'
+f0dd68f8d762d89d24d3ce1f4141f981  groupmems.c
+SHAR_EOF
+  else
+    shar_count="`LC_ALL= LC_CTYPE= LANG= wc -c < 'groupmems.c'`"
+    test 6348 -eq "$shar_count" ||
+    $echo 'groupmems.c:' 'original size' '6348,' 'current size' "$shar_count!"
+  fi
+fi
+# ============= groupmems.8 ==============
+if test -f 'groupmems.8' && test "$first_param" != -c; then
+  $echo 'x -' SKIPPING 'groupmems.8' '(file already exists)'
+else
+  $echo 'x -' extracting 'groupmems.8' '(text)'
+  sed 's/^X//' << 'SHAR_EOF' > 'groupmems.8' &&
+X.\"
+X.\" SPDX-FileCopyrightText: 2000, International Business Machines, Inc.
+X.\" SPDX-FileCopyrightText: 2000, George Kraft IV, gk4@us.ibm.com
+X.\" SPDX-License-Identifier: BSD-3-Clause
+X.\"
+X.\" $Id$
+X.\"
+X.TH GROUPMEMS 8
+X.SH NAME
+groupmems \- Administer members of a user's primary group
+X.SH SYNOPSIS
+X.B groupmems
+\fB-a\fI user_name \fR |
+\fB-d\fI user_name \fR |
+\fB-l\fR |
+\fB-D\fR |
+[\fB-g\fI group_name \fR]
+X.SH DESCRIPTION
+The \fBgroupmems\fR utility allows a user to administer their own
+group membership list without the requirement of superuser privileges.
+The \fBgroupmems\fR utility is for systems that configure its users to
+be in their own name sake primary group (i.e., guest / guest).
+X.P
+Only the superuser, as administrator, can use \fBgroupmems\fR to alter
+the memberships of other groups.
+X.IP "\fB-a \fIuser_name\fR"
+Add a new user to the group membership list.
+X.IP "\fB-d \fIuser_name\fR"
+Delete a user from the group membership list.
+X.IP "\fB-l\fR"
+List the group membership list.
+X.IP "\fB-D\fR"
+Delete all users from the group membership list.
+X.IP "\fB-g \fIgroup_name\fR"
+The superuser can specify which group membership list to modify.
+X.SH SETUP
+The \fBgroupmems\fR executable should be in mode \fB2770\fR as user \fBroot\fR
+and in group \fBgroups\fR.   The system administrator can add users to
+group groups to allow or disallow them using the  \fBgroupmems\fR utility
+to manager their own group membership list.
+X.P
+X     $ groupadd -r groups
+X.br
+X     $ chmod 2770 groupmems
+X.br
+X     $ chown root.groups groupmems
+X.br
+X     $ groupmems -g groups -a gk4
+X.SH FILES
+/etc/group
+X.br
+/etc/gshadow
+X.SH SEE ALSO
+X.BR chfn (1),
+X.BR chsh (1),
+X.BR useradd (8),
+X.BR userdel (8),
+X.BR usermod (8),
+X.BR passwd (1),
+X.BR groupadd (8),
+X.BR groupdel (8)
+X.SH AUTHOR
+George Kraft IV (gk4@us.ibm.com)
+X.\" EOF
+SHAR_EOF
+  (set 20 00 05 25 14 38 23 'groupmems.8'; eval "$shar_touch") &&
+  chmod 0600 'groupmems.8' ||
+  $echo 'restore of' 'groupmems.8' 'failed'
+  if ( md5sum --help 2>&1 | grep 'sage: md5sum \[' ) >/dev/null 2>&1 \
+  && ( md5sum --version 2>&1 | grep -v 'textutils 1.12' ) >/dev/null; then
+    md5sum -c << SHAR_EOF >/dev/null 2>&1 \
+    || $echo 'groupmems.8:' 'MD5 check failed'
+181e6cd3a3c9d3df320197fa2cde2b4a  groupmems.8
+SHAR_EOF
+  else
+    shar_count="`LC_ALL= LC_CTYPE= LANG= wc -c < 'groupmems.8'`"
+    test 3372 -eq "$shar_count" ||
+    $echo 'groupmems.8:' 'original size' '3372,' 'current size' "$shar_count!"
+  fi
+fi
+rm -fr _sh10937
+exit 0
diff --git a/contrib/pwdauth.c b/contrib/pwdauth.c
new file mode 100644
index 0000000..ca15495
--- /dev/null
+++ b/contrib/pwdauth.c
@@ -0,0 +1,308 @@
+/*
+ * pwdauth.c - program to verify a given username/password pair.
+ *
+ * Run it with username in argv[1] (may be omitted - default is the
+ * current user), and send it the password over a pipe on stdin.
+ * Exit status: 0 - correct password, 1 - wrong password, >1 - other
+ * errors.  For use with shadow passwords, this program should be
+ * installed setuid root.
+ *
+ * This can be used, for example, by xlock - you don't have to install
+ * this large and complex (== possibly insecure) program setuid root,
+ * just modify it to run this simple program to do the authentication.
+ *
+ * Recent versions (xlockmore-3.9) are cleaner, and drop privileges as
+ * soon as possible after getting the user's encrypted password.
+ * Using this program probably doesn't make it more secure, and has one
+ * disadvantage: since we don't get the encrypted user's password at
+ * startup (but at the time the user is authenticated), it is not clear
+ * how we should handle errors (like getpwnam() returning NULL).
+ * - fail the authentication?  Problem: no way to unlock (other than kill
+ *   the process from somewhere else) if the NIS server stops responding.
+ * - succeed and unlock?  Problem: it's too easy to unlock by unplugging
+ *   the box from the network and waiting until NIS times out...
+ *
+ * This program is Copyright (C) 1996 Marek Michalkiewicz
+ * <marekm@i17linuxb.ists.pwr.wroc.pl>.
+ *
+ * It may be used and distributed freely for any purposes.  There is no
+ * warranty - use at your own risk.  I am not liable for any damages etc.
+ * If you improve it, please send me your changes.
+ */
+
+static char rcsid[] = "$Id$";
+
+/*
+ * Define USE_SYSLOG to use syslog() to log successful and failed
+ * authentication.  This should be safe even if your system has
+ * the infamous syslog buffer overrun security problem...
+ */
+#define USE_SYSLOG
+
+/*
+ * Define HAVE_GETSPNAM to get shadow passwords using getspnam().
+ * Some systems don't have getspnam(), but getpwnam() returns
+ * encrypted passwords only if running as root.
+ *
+ * According to the xlock source (not tested, except Linux) -
+ * define: Linux, Solaris 2.x, SVR4, ...
+ * undef: HP-UX with Secured Passwords, FreeBSD, NetBSD, QNX.
+ * Known not supported (yet): Ultrix, OSF/1, SCO.
+ */
+#define HAVE_GETSPNAM
+
+/*
+ * Define HAVE_PW_ENCRYPT to use pw_encrypt() instead of crypt().
+ * pw_encrypt() is like the standard crypt(), except that it may
+ * support better password hashing algorithms.
+ *
+ * Define if linking with libshadow.a from the shadow password
+ * suite (Linux, SunOS 4.x?).
+ */
+#undef HAVE_PW_ENCRYPT
+
+/*
+ * Define HAVE_AUTH_METHODS to support the shadow suite specific
+ * extension: the encrypted password field contains a list of
+ * administrator defined authentication methods, separated by
+ * semicolons.  This program only supports the standard password
+ * authentication method (a string that doesn't start with '@').
+ */
+#undef HAVE_AUTH_METHODS
+
+/*
+ * FAIL_DELAY - number of seconds to sleep before exiting if the
+ * password was wrong, to slow down password guessing attempts.
+ */
+#define FAIL_DELAY 2
+
+/* No user-serviceable parts below :-).  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <pwd.h>
+
+#ifdef USE_SYSLOG
+#include <syslog.h>
+#ifndef LOG_AUTHPRIV
+#define LOG_AUTHPRIV LOG_AUTH
+#endif
+#endif
+
+#ifdef HAVE_GETSPNAM
+#include <shadow.h>
+#endif
+
+#ifdef HAVE_PW_ENCRYPT
+extern char *pw_encrypt();
+#define crypt pw_encrypt
+#endif
+
+/*
+ * Read the password (one line) from fp.  We don't turn off echo
+ * because we expect input from a pipe.
+ */
+static char *
+get_line(fp)
+	FILE *fp;
+{
+	static char buf[128];
+	char *cp;
+	int ch;
+
+	cp = buf;
+	while ((ch = getc(fp)) != EOF && ch != '\0' && ch != '\n') {
+		if (cp >= buf + sizeof buf - 1)
+			break;
+		*cp++ = ch;
+	}
+	*cp = '\0';
+	return buf;
+}
+
+/*
+ * Get the password file entry for the current user.  If the name
+ * returned by getlogin() is correct (matches the current real uid),
+ * return the entry for that user.  Otherwise, return the entry (if
+ * any) matching the current real uid.  Return NULL on failure.
+ */
+static struct passwd *
+get_my_pwent()
+{
+	uid_t uid = getuid();
+	char *name = getlogin();
+
+	if (name && *name) {
+		struct passwd *pw = getpwnam(name);
+
+		if (pw && pw->pw_uid == uid)
+			return pw;
+	}
+	return getpwuid(uid);
+}
+
+/*
+ * Verify the password.  The system-dependent shadow support is here.
+ */
+static int
+password_auth_ok(pw, pass)
+	const struct passwd *pw;
+	const char *pass;
+{
+	int result;
+	char *cp;
+#ifdef HAVE_AUTH_METHODS
+	char *buf;
+#endif
+#ifdef HAVE_GETSPNAM
+	struct spwd *sp;
+#endif
+
+	if (pw) {
+#ifdef HAVE_GETSPNAM
+		sp = getspnam(pw->pw_name);
+		if (sp)
+			cp = sp->sp_pwdp;
+		else
+#endif
+			cp = pw->pw_passwd;
+	} else
+		cp = "xx";
+
+#ifdef HAVE_AUTH_METHODS
+	buf = strdup(cp);  /* will be modified by strtok() */
+	if (!buf) {
+		fprintf(stderr, "Out of memory.\n");
+		exit(13);
+	}
+	cp = strtok(buf, ";");
+	while (cp && *cp == '@')
+		cp = strtok(NULL, ";");
+
+	/* fail if no password authentication for this user */
+	if (!cp)
+		cp = "xx";
+#endif
+
+	if (*pass || *cp)
+		result = (strcmp(crypt(pass, cp), cp) == 0);
+	else
+		result = 1;  /* user with no password */
+
+#ifdef HAVE_AUTH_METHODS
+	free(buf);
+#endif
+	return result;
+}
+
+/*
+ * Main program.
+ */
+int
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	struct passwd *pw;
+	char *pass, *name;
+	char myname[32];
+
+#ifdef USE_SYSLOG
+	openlog("pwdauth", LOG_PID | LOG_CONS, LOG_AUTHPRIV);
+#endif
+	pw = get_my_pwent();
+	if (!pw) {
+#ifdef USE_SYSLOG
+		syslog(LOG_ERR, "can't get login name for uid %d.\n",
+		       (int) getuid());
+#endif
+		fprintf(stderr, "Who are you?\n");
+		exit(2);
+	}
+	strncpy(myname, pw->pw_name, sizeof myname - 1);
+	myname[sizeof myname - 1] = '\0';
+	name = myname;
+
+	if (argc > 1) {
+		name = argv[1];
+		pw = getpwnam(name);
+	}
+
+	pass = get_line(stdin);
+	if (password_auth_ok(pw, pass)) {
+#ifdef USE_SYSLOG
+		syslog(pw->pw_uid ? LOG_INFO : LOG_NOTICE,
+		       "user `%s' entered correct password for `%.32s'.\n",
+		       myname, name);
+#endif
+		exit(0);
+	}
+#ifdef USE_SYSLOG
+	/* be careful not to overrun the syslog buffer */
+	syslog((!pw || pw->pw_uid) ? LOG_NOTICE : LOG_WARNING,
+	       "user `%s' entered incorrect password for `%.32s'.\n",
+	       myname, name);
+#endif
+#ifdef FAIL_DELAY
+	sleep(FAIL_DELAY);
+#endif
+	fprintf(stderr, "Wrong password.\n");
+	exit(1);
+}
+
+#if 0
+/*
+ * You can use code similar to the following to run this program.
+ * Return values: >=0 - program exit status (use the <sys/wait.h>
+ * macros to get the exit code, it is shifted left by 8 bits),
+ * -1 - check errno.
+ */
+int
+verify_password(const char *username, const char *password)
+{
+	int pipe_fd[2];
+	int pid, wpid, status;
+
+	if (pipe(pipe_fd))
+		return -1;
+	
+	if ((pid = fork()) == 0) {
+		char *arg[3];
+		char *env[1];
+
+		/* child */
+		close(pipe_fd[1]);
+		if (pipe_fd[0] != 0) {
+			if (dup2(pipe_fd[0], 0) != 0)
+				_exit(127);
+			close(pipe_fd[0]);
+		}
+		arg[0] = "/usr/bin/pwdauth";
+		arg[1] = username;
+		arg[2] = NULL;
+		env[0] = NULL;
+		execve(arg[0], arg, env);
+		_exit(127);
+	} else if (pid == -1) {
+		/* error */
+		close(pipe_fd[0]);
+		close(pipe_fd[1]);
+		return -1;
+	}
+	/* parent */
+	close(pipe_fd[0]);
+	write(pipe_fd[1], password, strlen(password));
+	write(pipe_fd[1], "\n", 1);
+	close(pipe_fd[1]);
+
+	while ((wpid = wait(&status)) != pid) {
+		if (wpid == -1)
+			return -1;
+	}
+	return status;
+}
+#endif
diff --git a/contrib/shadow-anonftp.patch b/contrib/shadow-anonftp.patch
new file mode 100644
index 0000000..e09647d
--- /dev/null
+++ b/contrib/shadow-anonftp.patch
@@ -0,0 +1,147 @@
+Hello Marek,
+
+I have created a diffile against the 980403 release that adds
+functionality to newusers for automatic handling of users with only
+anonymous ftp login (using the guestgroup feature in ftpaccess, which
+means that the users home directory looks like '/home/user/./'). It also
+adds a commandline argument to specify an initial directory structure
+for such users, with a tarball normally containing the bin,lib,etc
+directories used in the chrooted environment.
+
+I am using it to automatically create chunks of users with only ftp
+access for a webserver.
+
+I have tried to follow your coding standards and I believe it is bug
+free but.. well, who knows. :) It's not much code however.
+
+I hope you find it useful. Do what you like with it, feel free to ask if
+anything is unclear.
+
+Best rgds,
+  Calle Karlsson
+  ckn@kash.se
+
+diff -uNr shadow-980403.orig/src/newusers.c shadow-980403/src/newusers.c
+--- shadow-980403.orig/src/newusers.c	Fri Jan 30 00:22:43 1998
++++ shadow-980403/src/newusers.c	Fri Apr 17 16:55:33 1998
+@@ -76,11 +76,35 @@
+ static void
+ usage(void)
+ {
+-	fprintf(stderr, "Usage: %s [ input ]\n", Prog);
++	fprintf (stderr, "Usage: %s [-p prototype tarfile] [ input ]\n", Prog);
++	fprintf (stderr, "The prototype tarfile is only used for users\n");
++	fprintf (stderr, "marked as anonymous ftp users. It must be a full pathname.\n");
+ 	exit(1);
+ }
+ 
+ /*
++ * createuserdir - create a directory and chmod it
++ */
++
++static int
++createuserdir (char * dir, int uid, int gid, int line)
++{
++	if (mkdir (dir, 0777 & ~getdef_num("UMASK", 077))) {
++		fprintf (stderr, "%s: line %d: mkdir %s failed\n",
++			 Prog, line, dir);
++		return -1;
++	}
++
++	if (chown (dir, uid, gid)) {
++		fprintf (stderr, "%s: line %d: chown %s failed\n",
++			 Prog, line, dir);
++		return -1;
++	}
++
++	return 0;
++}
++
++/*
+  * add_group - create a new group or add a user to an existing group
+  */
+ 
+@@ -328,6 +352,8 @@
+ main(int argc, char **argv)
+ {
+ 	char	buf[BUFSIZ];
++	char	anonproto[BUFSIZ];
++	int	flag;
+ 	char	*fields[8];
+ 	int	nfields;
+ 	char	*cp;
+@@ -340,12 +366,23 @@
+ 
+ 	Prog = Basename(argv[0]);
+ 
+-	if (argc > 1 && argv[1][0] == '-')
+-		usage ();
++	* anonproto = '\0';
++
++	while ((flag = getopt (argc, argv, "p:h")) != EOF) {
++		switch (flag) {
++		case 'p':
++			STRFCPY(anonproto, optarg);
++			break;
++		case 'h':
++		default:
++			usage ();
++			break;
++		}
++	}
+ 
+-	if (argc == 2) {
+-		if (! freopen (argv[1], "r", stdin)) {
+-			snprintf(buf, sizeof buf, "%s: %s", Prog, argv[1]);
++	if (optind < argc) {
++		if (! freopen (argv[optind], "r", stdin)) {
++			snprintf(buf, sizeof buf, "%s: %s", Prog, argv[optind]);
+ 			perror (buf);
+ 			exit (1);
+ 		}
+@@ -499,15 +536,36 @@
+ 		if (fields[6][0])
+ 			newpw.pw_shell = fields[6];
+ 
+-		if (newpw.pw_dir[0] && access(newpw.pw_dir, F_OK)) {
+-			if (mkdir (newpw.pw_dir,
+-					0777 & ~getdef_num("UMASK", 077)))
+-				fprintf (stderr, "%s: line %d: mkdir failed\n",
+-					Prog, line);
+-			else if (chown (newpw.pw_dir,
+-					newpw.pw_uid, newpw.pw_gid))
+-				fprintf (stderr, "%s: line %d: chown failed\n",
+-					Prog, line);
++		if (newpw.pw_dir[0]) {
++		        char * userdir = strdup (newpw.pw_dir);
++			char * anonpart;
++			int rc;
++
++			if ((anonpart = strstr (userdir, "/./"))) {
++			        * anonpart = '\0';
++				anonpart += 2;
++			}
++			
++			if (access(userdir, F_OK))
++				rc = createuserdir (userdir, newpw.pw_uid, newpw.pw_gid, line);
++			else
++				rc = 0;
++
++			if (rc == 0 && anonpart) {
++				if (* anonproto) {
++					char cmdbuf [BUFSIZ];
++					snprintf(cmdbuf, sizeof cmdbuf,
++						 "cd %s; tar xf %s",
++						 userdir, anonproto);
++					system (cmdbuf);
++				}
++				if (strlen (anonpart) > 1) {
++					strcat (userdir, anonpart);
++					if (access (userdir, F_OK))
++						createuserdir (userdir, newpw.pw_uid, newpw.pw_gid, line);
++				}
++			}
++			free (userdir);
+ 		}
+ 
+ 		/*
diff --git a/contrib/udbachk.tgz b/contrib/udbachk.tgz
new file mode 100644
index 0000000..605ad63
--- /dev/null
+++ b/contrib/udbachk.tgz