Shadow Login Suite, version 3 (part 5 of 8)

[John F Haugh II]

#! /bin/sh
# This is a shell archive, meaning:
# 1. Remove everything above the #! /bin/sh line.
# 2. Save the resulting text in a file.
# 3. Execute the file with /bin/sh (not csh) to create:
#	pwio.c
#	encrypt.c
#	chpasswd.c
#	newusers.c
#	rad64.c
#	dialchk.c
#	faillog.h
#	pwdbm.c
#	grdbm.c
#	gshadow.c
#	sppack.c
# This archive created: Sun Mar  3 13:27:28 1991
# By:	John F Haugh II (River Parishes Programming, Austin TX)
export PATH; PATH=/bin:/usr/bin:$PATH
echo shar: "extracting 'pwio.c'" '(11009 characters)'
if test -f 'pwio.c'
then
	echo shar: "will not over-write existing file 'pwio.c'"
else
sed 's/^X//' << \SHAR_EOF > 'pwio.c'
X/*
X * Copyright 1990, John F. Haugh II
X * All rights reserved.
X *
X * Permission is granted to copy and create derivative works for any
X * non-commercial purpose, provided this copyright notice is preserved
X * in all copies of source code, or included in human readable form
X * and conspicuously displayed on all copies of object code or
X * distribution media.
X *
X *	This file implements a transaction oriented password database
X *	library.  The password file is updated one entry at a time.
X *	After each transaction the file must be logically closed and
X *	transferred to the existing password file.  The sequence of
X *	events is
X *
X *	pw_lock				-- lock password file
X *	pw_open				-- logically open password file
X *	while transaction to process
X *		pw_(locate,update,remove) -- perform transaction
X *	done
X *	pw_close			-- commit transactions
X *	pw_unlock			-- remove password lock
X */
X
X#include <sys/stat.h>
X#include <fcntl.h>
X#include <errno.h>
X#include "pwd.h"
X#include <stdio.h>
X
X#ifndef lint
Xstatic	char	sccsid[] = "@(#)pwio.c	3.6	12:31:19	12/12/90";
X#endif
X
Xstatic	int	islocked;
Xstatic	int	isopen;
Xstatic	int	open_modes;
Xstatic	FILE	*pwfp;
X
Xstruct	pw_file_entry {
X	char	*pwf_line;
X	int	pwf_changed;
X	struct	passwd	*pwf_entry;
X	struct	pw_file_entry *pwf_next;
X};
X
Xstatic	struct	pw_file_entry	*pwf_head;
Xstatic	struct	pw_file_entry	*pwf_tail;
Xstatic	struct	pw_file_entry	*pwf_cursor;
Xstatic	int	pw_changed;
Xstatic	int	lock_pid;
X
X#define	PW_LOCK	"/etc/passwd.lock"
X#define	PW_TEMP "/etc/pwd.%d"
X#define	PASSWD	"/etc/passwd"
X
Xstatic	char	pw_filename[BUFSIZ] = PASSWD;
X
Xextern	char	*strdup();
Xextern	struct	passwd	*sgetpwent();
X
X/*
X * pw_dup - duplicate a password file entry
X *
X *	pw_dup() accepts a pointer to a password file entry and
X *	returns a pointer to a password file entry in allocated
X *	memory.
X */
X
Xstatic struct passwd *
Xpw_dup (pwent)
Xstruct	passwd	*pwent;
X{
X	struct	passwd	*pw;
X
X	if (! (pw = (struct passwd *) malloc (sizeof *pw)))
X		return 0;
X
X	if ((pw->pw_name = strdup (pwent->pw_name)) == 0 ||
X			(pw->pw_passwd = strdup (pwent->pw_passwd)) == 0 ||
X#ifdef	ATT_AGE
X			(pw->pw_age = strdup (pwent->pw_age)) == 0 ||
X#endif	/* ATT_AGE */
X#ifdef	ATT_COMMENT
X			(pw->pw_comment = strdup (pwent->pw_comment)) == 0 ||
X#endif	/* ATT_COMMENT */
X			(pw->pw_gecos = strdup (pwent->pw_gecos)) == 0 ||
X			(pw->pw_dir = strdup (pwent->pw_dir)) == 0 ||
X			(pw->pw_shell = strdup (pwent->pw_shell)) == 0)
X		return 0;
X
X	pw->pw_uid = pwent->pw_uid;
X	pw->pw_gid = pwent->pw_gid;
X
X	return pw;
X}
X
X/*
X * pw_free - free a dynamically allocated password file entry
X *
X *	pw_free() frees up the memory which was allocated for the
X *	pointed to entry.
X */
X
Xstatic void
Xpw_free (pwent)
Xstruct	passwd	*pwent;
X{
X	free (pwent->pw_name);
X	free (pwent->pw_passwd);
X	free (pwent->pw_gecos);
X	free (pwent->pw_dir);
X	free (pwent->pw_shell);
X}
X
X/*
X * pw_name - change the name of the password file
X */
X
Xint
Xpw_name (name)
Xchar	*name;
X{
X	if (isopen || strlen (name) > (BUFSIZ-10))
X		return -1;
X
X	strcpy (pw_filename, name);
X	return 0;
X}
X
X/*
X * pw_lock - lock a password file
X *
X *	pw_lock() encapsulates the lock operation.  it returns
X *	TRUE or FALSE depending on the password file being
X *	properly locked.  the lock is set by creating a semaphore
X *	file, PW_LOCK.
X */
X
Xint
Xpw_lock ()
X{
X	int	fd;
X	int	pid;
X	int	len;
X	char	file[BUFSIZ];
X	char	buf[32];
X	struct	stat	sb;
X
X	if (islocked)
X		return 1;
X
X	if (strcmp (pw_filename, PASSWD) != 0)
X		return 0;
X
X	/*
X	 * Create a lock file which can be switched into place
X	 */
X
X	sprintf (file, PW_TEMP, lock_pid = getpid ());
X	if ((fd = open (file, O_CREAT|O_EXCL|O_WRONLY, 0600)) == -1)
X		return 0;
X
X	sprintf (buf, "%d", lock_pid);
X	if (write (fd, buf, strlen (buf) + 1) != strlen (buf) + 1) {
X		(void) close (fd);
X		(void) unlink (file);
X		return 0;
X	}
X	close (fd);
X
X	/*
X	 * Simple case first -
X	 *	Link fails (in a sane environment ...) if the target
X	 *	exists already.  So we try to switch in a new lock
X	 *	file.  If that succeeds, we assume we have the only
X	 *	valid lock.  Needs work for NFS where this assumption
X	 *	may not hold.  The simple hack is to check the link
X	 *	count on the source file, which should be 2 iff the
X	 *	link =really= worked.
X	 */
X
X	if (link (file, PW_LOCK) == 0) {
X		if (stat (file, &sb) != 0)
X			return 0;
X
X		if (sb.st_nlink != 2)
X			return 0;
X
X		(void) unlink (file);
X		islocked = 1;
X		return 1;
X	}
X
X	/*
X	 * Invalid lock test -
X	 *	Open the lock file and see if the lock is valid.
X	 *	The PID of the lock file is checked, and if the PID
X	 *	is not valid, the lock file is removed.  If the unlink
X	 *	of the lock file fails, it should mean that someone
X	 *	else is executing this code.  They will get success,
X	 *	and we will fail.
X	 */
X
X	if ((fd = open (PW_LOCK, O_RDWR)) == -1 ||
X			(len = read (fd, buf, BUFSIZ)) <= 0) {
X		errno = EINVAL;
X		return 0;
X	}
X	buf[len] = '\0';
X	if ((pid = strtol (buf, (char **) 0, 10)) == 0) {
X		errno = EINVAL;
X		return 0;
X	}
X	if (kill (pid, 0) == 0)  {
X		errno = EEXIST;
X		return 0;
X	}
X	if (unlink (PW_LOCK)) {
X		(void) close (fd);
X		(void) unlink (file);
X
X		return 0;
X	}
X
X	/*
X	 * Re-try lock -
X	 *	The invalid lock has now been removed and I should
X	 *	be able to acquire a lock for myself just fine.  If
X	 *	this fails there will be no retry.  The link count
X	 *	test here makes certain someone executing the previous
X	 *	block of code didn't just remove the lock we just
X	 *	linked to.
X	 */
X
X	if (link (file, PW_LOCK) == 0) {
X		if (stat (file, &sb) != 0)
X			return 0;
X
X		if (sb.st_nlink != 2)
X			return 0;
X
X		(void) unlink (file);
X		islocked = 1;
X		return 1;
X	}
X	(void) unlink (file);
X	return 0;
X}
X
X/*
X * pw_unlock - logically unlock a password file
X *
X *	pw_unlock() removes the lock which was set by an earlier
X *	invocation of pw_lock().
X */
X
Xint
Xpw_unlock ()
X{
X	if (isopen) {
X		open_modes = O_RDONLY;
X		if (! pw_close ())
X			return 0;
X	}
X  	if (islocked) {
X  		islocked = 0;
X		if (lock_pid != getpid ())
X			return 0;
X
X		(void) unlink (PW_LOCK);
X  		return 1;
X	}
X	return 0;
X}
X
X/*
X * pw_open - open a password file
X *
X *	pw_open() encapsulates the open operation.  it returns
X *	TRUE or FALSE depending on the password file being
X *	properly opened.
X */
X
Xint
Xpw_open (mode)
Xint	mode;
X{
X	char	buf[8192];
X	char	*cp;
X	struct	pw_file_entry	*pwf;
X	struct	passwd	*pwent;
X
X	if (isopen || (mode != O_RDONLY && mode != O_RDWR))
X		return 0;
X
X	if (mode != O_RDONLY && ! islocked &&
X			strcmp (pw_filename, PASSWD) == 0)
X		return 0;
X
X	if ((pwfp = fopen (pw_filename, mode == O_RDONLY ? "r":"r+")) == 0)
X		return 0;
X
X	pwf_head = pwf_tail = pwf_cursor = 0;
X	pw_changed = 0;
X
X	while (fgets (buf, sizeof buf, pwfp) != (char *) 0) {
X		if (cp = strrchr (buf, '\n'))
X			*cp = '\0';
X
X		if (! (pwf = (struct pw_file_entry *) malloc (sizeof *pwf)))
X			return 0;
X
X		pwf->pwf_changed = 0;
X		pwf->pwf_line = strdup (buf);
X		if ((pwent = sgetpwent (buf)) && ! (pwent = pw_dup (pwent)))
X			return 0;
X
X		pwf->pwf_entry = pwent;
X
X		if (pwf_head == 0) {
X			pwf_head = pwf_tail = pwf;
X			pwf->pwf_next = 0;
X		} else {
X			pwf_tail->pwf_next = pwf;
X			pwf->pwf_next = 0;
X			pwf_tail = pwf;
X		}
X	}
X	isopen++;
X	open_modes = mode;
X
X	return 1;
X}
X
X/*
X * pw_close - close the password file
X *
X *	pw_close() outputs any modified password file entries and
X *	frees any allocated memory.
X */
X
Xint
Xpw_close ()
X{
X	char	backup[BUFSIZ];
X	int	fd;
X	int	mask;
X	int	c;
X	int	i;
X	int	errors = 0;
X	FILE	*bkfp;
X	struct	pw_file_entry *pwf;
X	struct	pw_file_entry *opwf;
X
X	if (! isopen) {
X		errno = EINVAL;
X		return 0;
X	}
X	if (islocked && lock_pid != getpid ()) {
X		isopen = 0;
X		islocked = 0;
X		errno = EACCES;
X		return 0;
X	}
X	strcpy (backup, pw_filename);
X	strcat (backup, "-");
X
X	if (open_modes == O_RDWR && pw_changed) {
X		mask = umask (022);
X		if ((bkfp = fopen (backup, "w")) == 0) {
X			umask (mask);
X			return 0;
X		}
X		umask (mask);
X
X		rewind (pwfp);
X		while ((c = getc (pwfp)) != EOF) {
X			if (putc (c, bkfp) == EOF) {
X				fclose (bkfp);
X				return 0;
X			}
X		}
X		if (fclose (bkfp))
X			return 0;
X
X		isopen = 0;
X		(void) fclose (pwfp);
X
X		mask = umask (022);
X		if (! (pwfp = fopen (pw_filename, "w"))) {
X			umask (mask);
X			return 0;
X		}
X		umask (mask);
X
X		for (pwf = pwf_head;errors == 0 && pwf;pwf = pwf->pwf_next) {
X			if (pwf->pwf_changed) {
X				if (putpwent (pwf->pwf_entry, pwfp))
X					errors++;
X			} else {
X				if (fputs (pwf->pwf_line, pwfp) == EOF)
X					errors++;
X				if (putc ('\n', pwfp) == EOF)
X					errors++;
X			}
X		}
X		if (fflush (pwfp))
X			errors++;
X
X		if (errors) {
X			unlink (pw_filename);
X			link (backup, pw_filename);
X			unlink (backup);
X			return 0;
X		}
X	}
X	if (fclose (pwfp))
X		return 0;
X
X	pwfp = 0;
X
X	while (pwf_head != 0) {
X		pwf = pwf_head;
X		pwf_head = pwf->pwf_next;
X
X		if (pwf->pwf_entry) {
X			pw_free (pwf->pwf_entry);
X			free (pwf->pwf_entry);
X		}
X		if (pwf->pwf_line)
X			free (pwf->pwf_line);
X
X		free (pwf);
X	}
X	pwf_tail = 0;
X	return 1;
X}
X
Xint
Xpw_update (pwent)
Xstruct	passwd	*pwent;
X{
X	struct	pw_file_entry	*pwf;
X	struct	passwd	*npw;
X
X	if (! isopen || open_modes == O_RDONLY) {
X		errno = EINVAL;
X		return 0;
X	}
X	for (pwf = pwf_head;pwf != 0;pwf = pwf->pwf_next) {
X		if (pwf->pwf_entry == 0)
X			continue;
X
X		if (strcmp (pwent->pw_name, pwf->pwf_entry->pw_name) != 0)
X			continue;
X
X		if (! (npw = pw_dup (pwent)))
X			return 0;
X		else {
X			pw_free (pwf->pwf_entry);
X			*(pwf->pwf_entry) = *npw;
X		}
X		pwf->pwf_changed = 1;
X		pwf_cursor = pwf;
X		return pw_changed = 1;
X	}
X	pwf = (struct pw_file_entry *) malloc (sizeof *pwf);
X	if (! (pwf->pwf_entry = pw_dup (pwent)))
X		return 0;
X
X	pwf->pwf_changed = 1;
X	pwf->pwf_next = 0;
X	pwf->pwf_line = 0;
X
X	if (pwf_tail)
X		pwf_tail->pwf_next = pwf;
X
X	if (! pwf_head)
X		pwf_head = pwf;
X
X	pwf_tail = pwf;
X
X	return pw_changed = 1;
X}
X
Xint
Xpw_remove (name)
Xchar	*name;
X{
X	struct	pw_file_entry	*pwf;
X	struct	pw_file_entry	*opwf;
X
X	if (! isopen || open_modes == O_RDONLY) {
X		errno = EINVAL;
X		return 0;
X	}
X	for (opwf = 0, pwf = pwf_head;pwf != 0;
X			opwf = pwf, pwf = pwf->pwf_next) {
X		if (! pwf->pwf_entry)
X			continue;
X
X		if (strcmp (name, pwf->pwf_entry->pw_name) != 0)
X			continue;
X
X		if (pwf == pwf_cursor)
X			pwf_cursor = opwf;
X
X		if (opwf != 0)
X			opwf->pwf_next = pwf->pwf_next;
X		else
X			pwf_head = pwf->pwf_next;
X
X		if (pwf == pwf_tail)
X			pwf_tail = opwf;
X
X		return pw_changed = 1;
X	}
X	errno = ENOENT;
X	return 0;
X}
X
Xstruct passwd *
Xpw_locate (name)
Xchar	*name;
X{
X	struct	pw_file_entry	*pwf;
X
X	if (! isopen) {
X		errno = EINVAL;
X		return 0;
X	}
X	for (pwf = pwf_head;pwf != 0;pwf = pwf->pwf_next) {
X		if (pwf->pwf_entry == 0)
X			continue;
X
X		if (strcmp (name, pwf->pwf_entry->pw_name) == 0) {
X			pwf_cursor = pwf;
X			return pwf->pwf_entry;
X		}
X	}
X	errno = ENOENT;
X	return 0;
X}
X
Xint
Xpw_rewind ()
X{
X	if (! isopen) {
X		errno = EINVAL;
X		return 0;
X	}
X	pwf_cursor = 0;
X	return 1;
X}
X
Xstruct passwd *
Xpw_next ()
X{
X	if (! isopen) {
X		errno = EINVAL;
X		return 0;
X	}
X	if (pwf_cursor == 0)
X		pwf_cursor = pwf_head;
X	else
X		pwf_cursor = pwf_cursor->pwf_next;
X
X	while (pwf_cursor) {
X		if (pwf_cursor->pwf_entry)
X			return pwf_cursor->pwf_entry;
X
X		pwf_cursor = pwf_cursor->pwf_next;
X	}
X	return 0;
X}
SHAR_EOF
if test 11009 -ne "`wc -c < 'pwio.c'`"
then
	echo shar: "error transmitting 'pwio.c'" '(should have been 11009 characters)'
fi
fi
echo shar: "extracting 'encrypt.c'" '(1287 characters)'
if test -f 'encrypt.c'
then
	echo shar: "will not over-write existing file 'encrypt.c'"
else
sed 's/^X//' << \SHAR_EOF > 'encrypt.c'
X/*
X * Copyright 1990, John F. Haugh II
X * All rights reserved.
X *
X * Permission is granted to copy and create derivative works for any
X * non-commercial purpose, provided this copyright notice is preserved
X * in all copies of source code, or included in human readable form
X * and conspicuously displayed on all copies of object code or
X * distribution media.
X */
X
X#include <string.h>
X#include "config.h"
X
X#ifndef lint
Xstatic	char	sccsid[] = "@(#)encrypt.c	3.4	19:44:23	12/10/90";
X#endif
X
Xextern	char	*crypt();
X
Xchar *
Xpw_encrypt (clear, salt)
Xchar	*clear;
Xchar	*salt;
X{
X	static	char	cipher[32];
X	static	int	count;
X	char	newsalt[2];
X	char	*cp;
X	long	now;
X
X	/*
X	 * See if a new salt is needed and get a few random
X	 * bits of information.  The amount of randomness is
X	 * probably not all that crucial since the salt only
X	 * serves to thwart a dictionary attack.
X	 */
X
X	if (salt == (char *) 0) {
X		now = time ((long *) 0) + count++;
X		now ^= clock ();
X		now ^= getpid ();
X		now = ((now >> 12) ^ (now)) & 07777;
X		newsalt[0] = i64c ((now >> 6) & 077);
X		newsalt[1] = i64c (now & 077);
X		salt = newsalt;
X	}
X	cp = crypt (clear, salt);
X	strcpy (cipher, cp);
X
X#ifdef	DOUBLESIZE
X	if (strlen (clear) > 8) {
X		cp = crypt (clear + 8, salt);
X		strcat (cipher, cp + 2);
X	}
X#endif
X	return cipher;
X}
SHAR_EOF
if test 1287 -ne "`wc -c < 'encrypt.c'`"
then
	echo shar: "error transmitting 'encrypt.c'" '(should have been 1287 characters)'
fi
fi
echo shar: "extracting 'chpasswd.c'" '(5114 characters)'
if test -f 'chpasswd.c'
then
	echo shar: "will not over-write existing file 'chpasswd.c'"
else
sed 's/^X//' << \SHAR_EOF > 'chpasswd.c'
X/*
X * Copyright 1990, John F. Haugh II
X * All rights reserved.
X *
X * Permission is granted to copy and create derivative works for any
X * non-commercial purpose, provided this copyright notice is preserved
X * in all copies of source code, or included in human readable form
X * and conspicuously displayed on all copies of object code or
X * distribution media.
X *
X * chpass - update passwords in batch
X *
X *	chpass reads standard input for a list of colon separated
X *	user names and new passwords.  the appropriate password
X *	files are updated to reflect the changes.  because the
X *	changes are made in a batch fashion, the user must run
X *	the mkpasswd command after this command terminates since
X *	no password updates occur until the very end.
X */
X
X#include <stdio.h>
X#include "pwd.h"
X#include <fcntl.h>
X#include <string.h>
X#include "config.h"
X#ifdef	SHADOWPWD
X#include "shadow.h"
X#endif
X
X#ifndef	lint
Xstatic	char	sccsid[] = "@(#)chpasswd.c	3.2	12:30:30	12/12/90";
X#endif
X
Xchar	*Prog;
X
Xextern	char	*pw_encrypt();
X
X/* 
X * If it weren't for the different structures and differences in how
X * certain fields were manipulated, I could just use macros to replace
X * the function calls for the different file formats.  So I make the
X * best of things and just use macros to replace a few of the calls.
X */
X
X#ifdef	SHADOWPWD
X#define	pw_lock		spw_lock
X#define	pw_open		spw_open
X#define	pw_close	spw_close
X#define	pw_unlock	spw_unlock
X#endif
X
X/*
X * usage - display usage message and exit
X */
X
Xusage ()
X{
X	fprintf (stderr, "usage: %s\n", Prog);
X	exit (1);
X}
X
Xmain (argc, argv)
Xint	argc;
Xchar	**argv;
X{
X	char	buf[BUFSIZ];
X	char	*name;
X	char	*newpwd;
X	char	*cp;
X#ifdef	SHADOWPWD
X	struct	spwd	*sp;
X	struct	spwd	newsp;
X	struct	spwd	*spw_locate();
X#else
X	struct	passwd	*pw;
X	struct	passwd	newpw;
X	struct	passwd	*pw_locate();
X	char	newage[5];
X#endif
X	int	errors = 0;
X	int	line = 0;
X	long	now = time ((long *) 0) / (24L*3600L);
X
X	if (Prog = strrchr (argv[0], '/'))
X		Prog++;
X	else
X		Prog = argv[0];
X
X	if (argc != 1)
X		usage ();
X
X	/*
X	 * Lock the password file and open it for reading.  This will
X	 * bring all of the entries into memory where they may be
X	 * updated.
X	 */
X
X	if (! pw_lock ()) {
X		fprintf (stderr, "%s: can't lock password file\n", Prog);
X		exit (1);
X	}
X	if (! pw_open (O_RDWR)) {
X		fprintf (stderr, "%s: can't open password file\n", Prog);
X		exit (1);
X	}
X
X	/*
X	 * Read each line, separating the user name from the password.
X	 * The password entry for each user will be looked up in the
X	 * appropriate file (shadow or passwd) and the password changed.
X	 * For shadow files the last change date is set directly, for
X	 * passwd files the last change date is set in the age only if
X	 * aging information is present.
X	 */
X
X	while (fgets (buf, sizeof buf, stdin) != (char *) 0) {
X		line++;
X		if (cp = strrchr (buf, '\n')) {
X			*cp = '\0';
X		} else {
X			fprintf (stderr, "%s: line %d: line too long\n",
X				Prog, line);
X			errors++;
X			continue;
X		}
X
X		/*
X		 * The username is the first field.  It is separated
X		 * from the password with a ":" character which is
X		 * replaced with a NUL to give the new password.  The
X		 * new password will then be encrypted in the normal
X		 * fashion with a new salt generated.
X		 */
X
X		name = buf;
X		if (cp = strchr (name, ':')) {
X			*cp++ = '\0';
X		} else {
X			fprintf (stderr, "%s: line %d: missing new password\n",
X				Prog, line);
X			errors++;
X			continue;
X		}
X		newpwd = cp;
X		cp = pw_encrypt (newpwd, (char *) 0);
X
X		/*
X		 * Get the password file entry for this user.  The user
X		 * must already exist.
X		 */
X
X#ifdef	SHADOWPWD
X		if (! (sp = spw_locate (name)))
X#else
X		if (! (pw = pw_locate (name)))
X#endif
X		{
X			fprintf (stderr, "%s: line %d: unknown user %s\n",
X				Prog, line, name);
X			errors++;
X			continue;
X		}
X
X		/*
X		 * The freshly encrypted new password is merged into
X		 * the user's password file entry and the last password
X		 * change date is set to the current date.
X		 */
X
X#ifdef	SHADOWPWD
X		newsp = *sp;
X		newsp.sp_pwdp = cp;
X		newsp.sp_lstchg = now;
X#else
X		newpw = *pw;
X		newpw.pw_passwd = cp;
X#ifdef	ATT_AGE
X		if (newpw.pw_age[0]) {
X			strcpy (newage, newpw.pw_age);
X			strcpy (newage + 2, l64a (now / 7));
X			newpw.pw_age = newage;
X		}
X#endif
X#endif
X
X		/* 
X		 * The updated password file entry is then put back
X		 * and will be written to the password file later, after
X		 * all the other entries have been updated as well.
X		 */
X
X#ifdef	SHADOWPWD
X		if (! spw_update (&newsp))
X#else
X		if (! pw_update (&newpw))
X#endif
X		{
X			fprintf (stderr, "%s: line %d: cannot update password entry\n",
X				Prog, line);
X			errors++;
X			continue;
X		}
X	}
X
X	/*
X	 * Any detected errors will cause the entire set of changes
X	 * to be aborted.  Unlocking the password file will cause
X	 * all of the changes to be ignored.  Otherwise the file is
X	 * closed, causing the changes to be written out all at
X	 * once, and then unlocked afterwards.
X	 */
X
X	if (errors) {
X		fprintf ("%s: error detected, changes ignored\n", Prog);
X		pw_unlock ();
X		exit (1);
X	}
X	if (! pw_close ()) {
X		fprintf ("%s: error updating password file\n", Prog);
X		exit (1);
X	}
X	(void) pw_unlock ();
X}
SHAR_EOF
if test 5114 -ne "`wc -c < 'chpasswd.c'`"
then
	echo shar: "error transmitting 'chpasswd.c'" '(should have been 5114 characters)'
fi
fi
echo shar: "extracting 'newusers.c'" '(13360 characters)'
if test -f 'newusers.c'
then
	echo shar: "will not over-write existing file 'newusers.c'"
else
sed 's/^X//' << \SHAR_EOF > 'newusers.c'
X/*
X * Copyright 1990, John F. Haugh II
X * All rights reserved.
X *
X * Permission is granted to copy and create derivative works for any
X * non-commercial purpose, provided this copyright notice is preserved
X * in all copies of source code, or included in human readable form
X * and conspicuously displayed on all copies of object code or
X * distribution media.
X *
X *	newusers - create users from a batch file
X *
X *	newusers creates a collection of entries in /etc/passwd
X *	and related files by reading a passwd-format file and
X *	adding entries in the related directories.
X */
X
X#include <stdio.h>
X#include "pwd.h"
X#include <grp.h>
X#include <fcntl.h>
X#include <string.h>
X#include "config.h"
X#ifdef	SHADOWPWD
X#include "shadow.h"
X#endif
X
X#ifndef	lint
Xstatic	char	sccsid[] = "@(#)newusers.c	3.2	12:31:02	12/12/90";
X#endif
X
Xchar	*Prog;
X
Xextern	char	*pw_encrypt();
X
Xint	pw_lock(), gr_lock();
Xint	pw_open(), gr_open();
Xstruct	passwd	*pw_locate(), *pw_next();
Xstruct	group	*gr_locate(), *gr_next();
Xint	pw_update(), gr_update();
Xint	pw_close(), gr_close();
Xint	pw_unlock(), gr_unlock();
X
X#ifdef	SHADOWPWD
Xint	spw_lock(), spw_open(), spw_update(), spw_close(), spw_unlock();
Xstruct	spwd	*spw_locate(), *spw_next();
X#endif
X
X#ifndef	MKDIR
X
X/*
X * mkdir - for those of us with no mkdir() system call.
X */
X
Xmkdir (dir, mode)
Xchar	*dir;
Xint	mode;
X{
X	int	mask;
X	int	status;
X	int	pid;
X	int	i;
X	char	buf[BUFSIZ];
X
X	mode = (~mode & 0777);
X	mask = umask (mode);
X	if ((pid = fork ()) == 0) {
X		execl ("/bin/mkdir", "mkdir", dir, (char *) 0);
X		perror ("/bin/mkdir");
X		_exit (1);
X	} else {
X		while ((i = wait (&status)) != pid && i != -1)
X			;
X	}
X	umask (mask);
X	return status;
X}
X#endif
X
X/*
X * usage - display usage message and exit
X */
X
Xusage ()
X{
X	fprintf (stderr, "Usage: %s [ input ]\n", Prog);
X	exit (1);
X}
X
X/*
X * add_group - create a new group or add a user to an existing group
X */
X
Xint
Xadd_group (name, uid, gid, ngid)
Xchar	*name;
Xchar	*uid;
Xchar	*gid;
Xint	*ngid;
X{
X	struct	passwd	*pwd;
X	struct	group	*grp;
X	struct	group	grent;
X	char	*members[2];
X	int	i;
X
X	/*
X	 * Start by seeing if the named group already exists.  This
X	 * will be very easy to deal with if it does.
X	 */
X
X	if (grp = gr_locate (gid)) {
Xadd_member:
X		grent = *grp;
X		*ngid = grent.gr_gid;
X		for (i = 0;grent.gr_mem[i] != (char *) 0;i++)
X			if (strcmp (grent.gr_mem[i], name) == 0)
X				return 0;
X
X		if (! (grent.gr_mem = (char **)
X				malloc (sizeof (char *) * (i + 2)))) {
X			fprintf (stderr, "%s: Out of Memory\n", Prog);
X			return -1;
X		}
X		memcpy (grent.gr_mem, grp->gr_mem, sizeof (char *) * (i + 2));
X		grent.gr_mem[i] = strdup (name);
X		grent.gr_mem[i + 1] = (char *) 0;
X
X		return ! gr_update (&grent);
X	}
X
X	/*
X	 * The group did not exist, so I try to figure out what the
X	 * GID is going to be.  The gid parameter is probably "", meaning
X	 * I figure out the GID from the password file.  I want the UID
X	 * and GID to match, unless the GID is already used.
X	 */
X
X	if (gid[0] == '\0') {
X		i = 100;
X		for (pw_rewind ();pwd = pw_next ();) {
X			if (pwd->pw_uid >= i)
X				i = pwd->pw_uid + 1;
X		}
X		for (gr_rewind ();grp = gr_next ();) {
X			if (grp->gr_gid == i) {
X				i = -1;
X				break;
X			}
X		}
X	} else if (gid[0] >= '0' && gid[0] <= '9') {
X
X	/*
X	 * The GID is a number, which means either this is a brand new
X	 * group, or an existing group.  For existing groups I just add
X	 * myself as a member, just like I did earlier.
X	 */
X
X		i = atoi (gid);
X		for (gr_rewind ();grp = gr_next ();)
X			if (grp->gr_gid == i)
X				goto add_member;
X	} else
X
X	/*
X	 * The last alternative is that the GID is a name which is not
X	 * already the name of an existing group, and I need to figure
X	 * out what group ID that group name is going to have.
X	 */
X
X		i = -1;
X
X	/*
X	 * If I don't have a group ID by now, I'll go get the
X	 * next one.
X	 */
X
X	if (i == -1) {
X		for (i = 100, gr_rewind;grp = gr_next ();)
X			if (grp->gr_gid >= i)
X				i = grp->gr_gid + 1;
X	}
X
X	/*
X	 * Now I have all of the fields required to create the new
X	 * group.
X	 */
X
X	if (gid[0] && (gid[0] <= '0' || gid[0] >= '9'))
X		grent.gr_name = gid;
X	else
X		grent.gr_name = name;
X
X	grent.gr_passwd = "!";
X	grent.gr_gid = i;
X	members[0] = name;
X	members[1] = (char *) 0;
X	grent.gr_mem = members;
X
X	*ngid = grent.gr_gid;
X	return ! gr_update (&grent);
X}
X
X/*
X * add_user - create a new user ID
X */
X
Xadd_user (name, uid, nuid, gid)
Xchar	*name;
Xchar	*uid;
Xint	*nuid;
Xint	gid;
X{
X	struct	passwd	*pwd;
X	struct	passwd	pwent;
X	int	i;
X
X	/*
X	 * The first guess for the UID is either the numerical UID
X	 * that the caller provided, or the next available UID.
X	 */
X
X	if (uid[0] >= '0' && uid[0] <= '9') {
X		i = atoi (uid);
X	} if (uid[0] && (pwd = pw_locate (uid))) {
X		i = pwd->pw_uid;
X	} else {
X		i = 100;
X		for (pw_rewind ();pwd = pw_next ();)
X			if (pwd->pw_uid >= i)
X				i = pwd->pw_uid + 1;
X	}
X
X	/*
X	 * I don't want to fill in the entire password structure
X	 * members JUST YET, since there is still more data to be
X	 * added.  So, I fill in the parts that I have.
X	 */
X
X	pwent.pw_name = name;
X	pwent.pw_passwd = "!";
X#ifdef	ATT_AGE
X	pwent.pw_age = "";
X#endif
X#ifdef	ATT_COMMENT
X	pwent.pw_comment = "";
X#endif
X#ifdef	BSD_QUOTAS
X	pwent.pw_quota = 0;
X#endif
X	pwent.pw_uid = i;
X	pwent.pw_gid = gid;
X	pwent.pw_gecos = "";
X	pwent.pw_dir = "";
X	pwent.pw_shell = "";
X
X	*nuid = i;
X	return ! pw_update (&pwent);
X}
X
X/*
X * add_passwd - add or update the encrypted password
X */
X
Xadd_passwd (pwd, passwd)
Xstruct	passwd	*pwd;
Xchar	*passwd;
X{
X#ifdef	SHADOWPWD
X	struct	spwd	*sp;
X	struct	spwd	spent;
X#endif
X	struct	passwd	*pw;
X	struct	passwd	pwent;
X	static	char	newage[5];
X
X	/*
X	 * In the case of regular password files, this is real
X	 * easy - pwd points to the entry in the password file.
X	 * Shadow files are harder since there are zillions of
X	 * things to do ...
X	 */
X
X#ifndef	SHADOWPWD
X	pwd->pw_passwd = pw_encrypt (passwd, (char *) 0);
X#ifdef	ATT_AGE
X	if (strlen (pwd->pw_age) == 4) {
X		strcpy (newage, pwd->pw_age);
X		strcpy (newage + 2,
X			l64a (time ((long *) 0) / (7L*24L*3600L)));
X		pwd->pw_age = newage;
X	}
X#endif	/* ATT_AGE */
X	return 0;
X#else
X
X	/*
X	 * Do the first and easiest shadow file case.  The user
X	 * already exists in the shadow password file.
X	 */
X
X	if (sp = spw_locate (pwd->pw_name)) {
X		spent = *sp;
X		spent.sp_pwdp = pw_encrypt (passwd, (char *) 0);
X		return ! spw_update (sp);
X	}
X
X	/*
X	 * Pick the next easiest case - the user has an encrypted
X	 * password which isn't equal to "!".  The password was set
X	 * to "!" earlier when the entry was created, so this user
X	 * would have to have had the password set someplace else.
X	 */
X
X	if (strcmp (pwd->pw_passwd, "!") != 0) {
X		pwd->pw_passwd = pw_encrypt (passwd, (char *) 0);
X#ifdef	ATT_AGE
X		if (strlen (pwd->pw_age) == 4) {
X			strcpy (newage, pwd->pw_age);
X			strcpy (newage + 2,
X				l64a (time ((long *) 0) / (7L*24L*3600L)));
X			pwd->pw_age = newage;
X		}
X#endif	/* ATT_AGE */
X		return 0;
X	}
X
X	/*
X	 * Now the really hard case - I need to create an entirely
X	 * shadow password file entry.
X	 */
X
X	spent.sp_namp = pwd->pw_name;
X	spent.sp_pwdp = pw_encrypt (passwd, (char *) 0);
X	spent.sp_lstchg = time ((long *) 0) / (24L*3600L);
X#ifdef	MINDAYS
X	spent.sp_min = MINDAYS;
X#else
X	spent.sp_min = 0;
X#endif
X#ifdef	MAXDAYS
X	spent.sp_max = MAXDAYS;
X#else
X	spent.sp_max = 10000;		/* 10000 is infinity this week */
X#endif
X#ifdef	WARNAGE
X	spent.sp_warn = WARNAGE;
X#else
X	spent.sp_warn = -1;
X#endif
X	spent.sp_inact = -1;
X	spent.sp_expire = -1;
X	spent.sp_flag = -1;
X
X	return ! spw_update (&spent);
X#endif
X}
X
Xmain (argc, argv)
Xint	argc;
Xchar	**argv;
X{
X	char	buf[BUFSIZ];
X	char	*fields[8];
X	int	nfields;
X	char	*name;
X	char	*newpwd;
X	char	*cp;
X#ifdef	SHADOWPWD
X	struct	spwd	*sp;
X	struct	spwd	newsp;
X	struct	spwd	*spw_locate();
X#endif
X	struct	passwd	*pw;
X	struct	passwd	newpw;
X	struct	passwd	*pw_locate();
X	char	newage[5];
X	int	errors = 0;
X	int	line = 0;
X	long	now = time ((long *) 0) / (24L*3600L);
X	int	uid;
X	int	gid;
X	int	i;
X
X	if (Prog = strrchr (argv[0], '/'))
X		Prog++;
X	else
X		Prog = argv[0];
X
X	if (argc > 1 && argv[1][0] == '-')
X		usage ();
X
X	if (argc == 2) {
X		if (! freopen (argv[1], "r", stdin)) {
X			sprintf (buf, "%s: %s", Prog, argv[1]);
X			perror (buf);
X			exit (1);
X		}
X	}
X
X	/*
X	 * Lock the password files and open them for update.  This will
X	 * bring all of the entries into memory where they may be
X	 * searched for an modified, or new entries added.  The password
X	 * file is the key - if it gets locked, assume the others can
X	 * be locked right away.
X	 */
X
X	for (i = 0;i < 30;i++) {
X		if (pw_lock ())
X			break;
X	}
X	if (i == 30) {
X		fprintf (stderr, "%s: can't lock /etc/passwd.\n", Prog);
X		exit (1);
X	}
X#ifdef	SHADOWPWD
X	if (! spw_lock () || ! gr_lock ())
X#else
X	if (! gr_lock ())
X#endif
X	{
X		fprintf (stderr, "%s: can't lock files, try again later\n",
X			Prog);
X		(void) pw_unlock ();
X#ifdef	SHADOWPWD
X		(void) spw_unlock ();
X#endif
X		exit (1);
X	}
X#ifdef	SHADOWPWD
X	if (! pw_open (O_RDWR) || ! spw_open (O_RDWR) || ! gr_open (O_RDWR))
X#else
X	if (! pw_open (O_RDWR) || ! gr_open (O_RDWR))
X#endif
X	{
X		fprintf (stderr, "%s: can't open files\n", Prog);
X		(void) pw_unlock ();
X#ifdef	SHADOWPWD
X		(void) spw_unlock ();
X#endif
X		(void) gr_unlock ();
X		exit (1);
X	}
X
X	/*
X	 * Read each line.  The line has the same format as a password
X	 * file entry, except that certain fields are not contrained to
X	 * be numerical values.  If a group ID is entered which does
X	 * not already exist, an attempt is made to allocate the same
X	 * group ID as the numerical user ID.  Should that fail, the
X	 * next available group ID over 100 is allocated.  The pw_gid
X	 * field will be updated with that value.
X	 */
X
X	while (fgets (buf, sizeof buf, stdin) != (char *) 0) {
X		line++;
X		if (cp = strrchr (buf, '\n')) {
X			*cp = '\0';
X		} else {
X			fprintf (stderr, "%s: line %d: line too long\n",
X				Prog, line);
X			errors++;
X			continue;
X		}
X
X		/*
X		 * Break the string into fields and screw around with
X		 * them.  There MUST be 7 colon separated fields,
X		 * although the values aren't that particular.
X		 */
X
X		for (cp = buf, nfields = 0;nfields < 7;nfields++) {
X			fields[nfields] = cp;
X			if (cp = strchr (cp, ':'))
X				*cp++ = '\0';
X			else
X				break;
X		}
X		if (*cp || nfields != 6) {
X			fprintf (stderr, "%s: line %d: invalid line\n",
X				Prog, line);
X			continue;
X		}
X
X		/*
X		 * Now the fields are processed one by one.  The first
X		 * field to be processed is the group name.  A new
X		 * group will be created if the group name is non-numeric
X		 * and does not already exist.  The named user will be
X		 * the only member.  If there is no named group to be a
X		 * member of, the UID will be figured out and that value
X		 * will be a candidate for a new group, if that group ID
X		 * exists, a whole new group ID will be made up.
X		 */
X		
X		if (! (pw = pw_locate (fields[0])) &&
X			add_group (fields[0], fields[2], fields[3], &gid)) {
X			fprintf (stderr, "%s: %d: can't create GID\n",
X				Prog, line);
X			errors++;
X			continue;
X		}
X
X		/*
X		 * Now we work on the user ID.  It has to be specified
X		 * either as a numerical value, or left blank.  If it
X		 * is a numerical value, that value will be used, otherwise
X		 * the next available user ID is computed and used.  After
X		 * this there will at least be a (struct passwd) for the
X		 * user.
X		 */
X
X		if (! pw && add_user (fields[0], fields[2], &uid, gid)) {
X			fprintf (stderr, "%s: line %d: can't create UID\n",
X				Prog, line);
X			errors++;
X			continue;
X		}
X
X		/*
X		 * The password, gecos field, directory, and shell fields
X		 * all come next.
X		 */
X
X		if (! (pw = pw_locate (fields[0]))) {
X			fprintf (stderr, "%s: line %d: cannot find user %s\n",
X				Prog, line, fields[0]);
X			errors++;
X			continue;
X		}
X		newpw = *pw;
X
X		if (add_passwd (&newpw, fields[1])) {
X			fprintf (stderr, "%s: line %d: can't update password\n",
X				Prog, line);
X			errors++;
X			continue;
X		}
X		if (fields[4][0])
X			newpw.pw_gecos = fields[4];
X
X		if (fields[5][0])
X			newpw.pw_dir = fields[5];
X
X		if (fields[6][0])
X			newpw.pw_shell = fields[6];
X
X		if (newpw.pw_dir[0] && access (newpw.pw_dir, 0)) {
X#ifdef	UMASK
X			if (mkdir (newpw.pw_dir, 0777 & (~UMASK)))
X#else
X			if (mkdir (newpw.pw_dir, 0777))
X#endif
X				fprintf (stderr, "%s: line %d: mkdir failed\n",
X					Prog, line);
X			else if (chown (newpw.pw_dir,
X					newpw.pw_uid, newpw.pw_gid))
X				fprintf (stderr, "%s: line %d: chown failed\n",
X					Prog, line);
X		}
X
X		/*
X		 * Update the password entry with the new changes made.
X		 */
X
X		if (! pw_update (&newpw)) {
X			fprintf (stderr, "%s: line %d: can't update entry\n",
X				Prog, line);
X			errors++;
X			continue;
X		}
X	}
X
X	/*
X	 * Any detected errors will cause the entire set of changes
X	 * to be aborted.  Unlocking the password file will cause
X	 * all of the changes to be ignored.  Otherwise the file is
X	 * closed, causing the changes to be written out all at
X	 * once, and then unlocked afterwards.
X	 */
X
X	if (errors) {
X		fprintf ("%s: error detected, changes ignored\n", Prog);
X		(void) gr_unlock ();
X#ifdef	SHADOWPWD
X		(void) spw_unlock ();
X#endif
X		(void) pw_unlock ();
X		exit (1);
X	}
X#ifdef	SHADOWPWD
X	if (! pw_close () || ! spw_close () || ! gr_close ())
X#else
X	if (! pw_close () || ! gr_close ())
X#endif
X	{
X		fprintf ("%s: error updating files\n", Prog);
X		(void) gr_unlock ();
X#ifdef	SHADOWPWD
X		(void) spw_unlock ();
X#endif
X		(void) pw_unlock ();
X		exit (1);
X	}
X	(void) gr_unlock ();
X#ifdef	SHADOWPWD
X	(void) spw_unlock ();
X#endif
X	(void) pw_unlock ();
X
X	exit (0);
X}
SHAR_EOF
if test 13360 -ne "`wc -c < 'newusers.c'`"
then
	echo shar: "error transmitting 'newusers.c'" '(should have been 13360 characters)'
fi
fi
echo shar: "extracting 'rad64.c'" '(1670 characters)'
if test -f 'rad64.c'
then
	echo shar: "will not over-write existing file 'rad64.c'"
else
sed 's/^X//' << \SHAR_EOF > 'rad64.c'
X/*
X * Copyright 1989, 1990, John F. Haugh II
X * All rights reserved.
X *
X * Permission is granted to copy and create derivative works for any
X * non-commercial purpose, provided this copyright notice is preserved
X * in all copies of source code, or included in human readable form
X * and conspicuously displayed on all copies of object code or
X * distribution media.
X */
X
X#ifndef	lint
Xstatic	char	sccsid[] = "@(#)rad64.c	3.2	19:44:25	12/10/90";
X#endif
X
X/*
X * c64i - convert a radix 64 character to an integer
X */
X
Xint	c64i (c)
Xchar	c;
X{
X	if (c == '.')
X		return (0);
X
X	if (c == '/')
X		return (1);
X
X	if (c >= '0' && c <= '9')
X		return (c - '0' + 2);
X
X	if (c >= 'A' && c <= 'Z')
X		return (c - 'A' + 12);
X
X	if (c >= 'a' && c <= 'z')
X		return (c - 'a' + 38);
X	else
X		return (-1);
X}
X
X/*
X * i64c - convert an integer to a radix 64 character
X */
X
Xint	i64c (i)
Xint	i;
X{
X	if (i < 0)
X		return ('.');
X	else if (i > 63)
X		return ('z');
X
X	if (i == 0)
X		return ('.');
X
X	if (i == 1)
X		return ('/');
X
X	if (i >= 2 && i <= 11)
X		return ('0' - 2 + i);
X
X	if (i >= 12 && i <= 37)
X		return ('A' - 12 + i);
X
X	if (i >= 38 && i <= 63)
X		return ('a' - 38 + i);
X
X	return ('\0');
X}
X
X/*
X * l64a - convert a long to a string of radix 64 characters
X */
X
Xchar	*l64a (l)
Xlong	l;
X{
X	static	char	buf[8];
X	int	i = 0;
X
X	if (i < 0L)
X		return ((char *) 0);
X
X	do {
X		buf[i++] = i64c ((int) (l % 64));
X		buf[i] = '\0';
X	} while (l /= 64L, l > 0 && i < 6);
X
X	return (buf);
X}
X
X/*
X * a64l - convert a radix 64 string to a long integer
X */
X
Xlong	a64l (s)
Xchar	*s;
X{
X	int	i;
X	long	value;
X	long	shift = 0;
X
X	for (i = 0, value = 0L;i < 6 && *s;s++) {
X		value += (c64i (*s) << shift);
X		shift += 6;
X	}
X	return (value);
X}
SHAR_EOF
if test 1670 -ne "`wc -c < 'rad64.c'`"
then
	echo shar: "error transmitting 'rad64.c'" '(should have been 1670 characters)'
fi
fi
echo shar: "extracting 'dialchk.c'" '(1328 characters)'
if test -f 'dialchk.c'
then
	echo shar: "will not over-write existing file 'dialchk.c'"
else
sed 's/^X//' << \SHAR_EOF > 'dialchk.c'
X/*
X * Copyright 1989, 1990, John F. Haugh II
X * All rights reserved.
X *
X * Permission is granted to copy and create derivative works for any
X * non-commercial purpose, provided this copyright notice is preserved
X * in all copies of source code, or included in human readable form
X * and conspicuously displayed on all copies of object code or
X * distribution media.
X */
X
X#include <stdio.h>
X#ifdef	BSD
X#include <strings.h>
X#else
X#include <string.h>
X#endif
X#include "config.h"
X#include "dialup.h"
X
X#ifndef	lint
Xstatic	char	sccsid[] = "@(#)dialchk.c	3.2	19:44:18	12/10/90";
X#endif
X
Xextern	char	*pw_encrypt();
X
X/*
X * Check for dialup password
X *
X *	dialcheck tests to see if tty is listed as being a dialup
X *	line.  If so, a dialup password may be required if the shell
X *	is listed as one which requires a second password.
X */
X
Xint	dialcheck (tty, shell)
Xchar	*tty;
Xchar	*shell;
X{
X	char	*crypt ();
X	char	*getpass ();
X	struct	dialup	*dialup;
X	char	*pass;
X	char	*cp;
X
X	setduent ();
X
X	if (! isadialup (tty)) {
X		endduent ();
X		return (1);
X	}
X	if (! (dialup = getdushell (shell))) {
X		endduent ();
X		return (1);
X	}
X	endduent ();
X
X	if (dialup->du_passwd[0] == '\0')
X		return (1);
X
X	if (! (pass = getpass ("Dialup Password:")))
X		return (0);
X
X	cp = pw_encrypt (pass, dialup->du_passwd);
X	return (strcmp (cp, dialup->du_passwd) == 0);
X}
SHAR_EOF
if test 1328 -ne "`wc -c < 'dialchk.c'`"
then
	echo shar: "error transmitting 'dialchk.c'" '(should have been 1328 characters)'
fi
fi
echo shar: "extracting 'faillog.h'" '(715 characters)'
if test -f 'faillog.h'
then
	echo shar: "will not over-write existing file 'faillog.h'"
else
sed 's/^X//' << \SHAR_EOF > 'faillog.h'
X/*
X * Copyright 1989, 1990, John F. Haugh II
X * All rights reserved.
X *
X * Use, duplication, and disclosure prohibited without
X * the express written permission of the author.
X */
X
X/*
X * faillog.h - login failure logging file format
X *
X *	@(#)faillog.h	2.2	19:23:46	7/29/90
X *
X * The login failure file is maintained by login(1) and fail(1L)
X * Each record in the file represents a separate UID and the file
X * is indexed in that fashion.
X */
X
X#define	FAILFILE	"/usr/adm/faillog"
X
Xstruct	faillog {
X	short	fail_cnt;	/* failures since last success */
X	short	fail_max;	/* failures before turning account off */
X	char	fail_line[12];	/* last failure occured here */
X	time_t	fail_time;	/* last failure occured then */
X};
SHAR_EOF
if test 715 -ne "`wc -c < 'faillog.h'`"
then
	echo shar: "error transmitting 'faillog.h'" '(should have been 715 characters)'
fi
fi
echo shar: "extracting 'pwdbm.c'" '(1637 characters)'
if test -f 'pwdbm.c'
then
	echo shar: "will not over-write existing file 'pwdbm.c'"
else
sed 's/^X//' << \SHAR_EOF > 'pwdbm.c'
X/*
X * Copyright 1990, John F. Haugh II
X * All rights reserved.
X *
X * Permission is granted to copy and create derivative works for any
X * non-commercial purpose, provided this copyright notice is preserved
X * in all copies of source code, or included in human readable form
X * and conspicuously displayed on all copies of object code or
X * distribution media.
X */
X
X#ifndef	lint
Xstatic	char	sccsid[] = "@(#)pwdbm.c	3.3	12:31:13	12/12/90";
X#endif
X
X#ifdef	BSD
X#include <strings.h>
X#define	strchr	index
X#define	strrchr	rindex
X#else
X#include <string.h>
X#endif
X#include <stdio.h>
X#include "pwd.h"
X#include "config.h"
X
X#ifdef	DBM
X#include <dbm.h>
X#endif
X#ifdef	NDBM
X#include <ndbm.h>
XDBM	*pw_dbm;
X#endif
X
X/*
X * pw_dbm_update
X *
X * Updates the DBM password files, if they exist.
X */
X
Xint
Xpw_dbm_update (pw)
Xstruct	passwd	*pw;
X{
X	datum	key;
X	datum	content;
X	char	data[BUFSIZ];
X	int	len;
X	static	int	once;
X
X	if (! once) {
X#ifdef	NDBM
X		if (! pw_dbm)
X			setpwent ();
X#else
X		setpwent ();
X#endif
X		once++;
X	}
X#ifdef	DBM
X	strcpy (data, PWDFILE);
X	strcat (data, ".pag");
X	if (access (data, 0))
X		return 0;
X#endif
X#ifdef	NDBM
X	if (! pw_dbm)
X		return 0;
X#endif
X	len = pw_pack (pw, data);
X	content.dsize = len;
X	content.dptr = data;
X
X	key.dsize = strlen (pw->pw_name);
X	key.dptr = pw->pw_name;
X#ifdef	DBM
X	if (store (key, content))
X		return 0;
X#endif
X#ifdef	NDBM
X	if (dbm_store (pw_dbm, key, content, DBM_REPLACE))
X		return 0;
X#endif
X
X	key.dsize = sizeof pw->pw_uid;
X	key.dptr = (char *) &pw->pw_uid;
X#ifdef	DBM
X	if (store (key, content))
X		return 0;
X#endif
X#ifdef	NDBM
X	if (dbm_store (pw_dbm, key, content, DBM_REPLACE))
X		return 0;
X#endif
X	return 1;
X}
SHAR_EOF
if test 1637 -ne "`wc -c < 'pwdbm.c'`"
then
	echo shar: "error transmitting 'pwdbm.c'" '(should have been 1637 characters)'
fi
fi
echo shar: "extracting 'grdbm.c'" '(2117 characters)'
if test -f 'grdbm.c'
then
	echo shar: "will not over-write existing file 'grdbm.c'"
else
sed 's/^X//' << \SHAR_EOF > 'grdbm.c'
X/*
X * Copyright 1990, John F. Haugh II
X * All rights reserved.
X *
X * Use, duplication, and disclosure prohibited without
X * the express written permission of the author.
X */
X
X#ifndef	lint
Xstatic	char	sccsid[] = "@(#)grdbm.c	3.1	08:11:52	11/21/90";
X#endif
X
X#include <string.h>
X#include <stdio.h>
X#include <grp.h>
X#include "config.h"
X
X#ifdef	NDBM
X#include <ndbm.h>
XDBM	*gr_dbm;
X
X#define	GRP_FRAG	256
X
X/*
X * gr_dbm_update
X *
X * Updates the DBM password files, if they exist.
X */
X
Xint
Xgr_dbm_update (gr)
Xstruct	group	*gr;
X{
X	datum	key;
X	datum	content;
X	char	data[BUFSIZ*8];
X	char	grpkey[60];
X	char	*cp;
X	int	len;
X	int	i;
X	int	cnt;
X	static	int	once;
X
X	if (! once) {
X		if (! gr_dbm)
X			setgrent ();
X
X		once++;
X	}
X	if (! gr_dbm)
X		return 0;
X
X	len = gr_pack (gr, data);
X
X	if (len <= GRP_FRAG) {
X		content.dsize = len;
X		content.dptr = data;
X
X		key.dsize = strlen (gr->gr_name);
X		key.dptr = gr->gr_name;
X		if (dbm_store (gr_dbm, key, content, DBM_REPLACE))
X			return 0;
X
X		key.dsize = sizeof gr->gr_gid;
X		key.dptr = (char *) &gr->gr_gid;
X		if (dbm_store (gr_dbm, key, content, DBM_REPLACE))
X			return 0;
X
X	} else {
X		content.dsize = sizeof cnt;
X		content.dptr = (char *) &cnt;
X		cnt = (len + (GRP_FRAG-1)) / GRP_FRAG;
X
X		key.dsize = strlen (gr->gr_name);
X		key.dptr = gr->gr_name;
X		if (dbm_store (gr_dbm, key, content, DBM_REPLACE))
X			return 0;
X
X		key.dsize = sizeof gr->gr_gid;
X		key.dptr = (char *) &gr->gr_gid;
X		if (dbm_store (gr_dbm, key, content, DBM_REPLACE))
X			return 0;
X
X		for (cp = data, i = 0;i < cnt;i++) {
X			content.dsize = len > GRP_FRAG ? GRP_FRAG:len;
X			len -= content.dsize;
X			content.dptr = cp;
X			cp += content.dsize;
X
X			key.dsize = sizeof i + strlen (gr->gr_name);
X			key.dptr = grpkey;
X			memcpy (grpkey, &i, sizeof i);
X			strcpy (grpkey + sizeof i, gr->gr_name);
X			if (dbm_store (gr_dbm, key, content, DBM_REPLACE))
X				return 0;
X
X			key.dsize = sizeof i + sizeof gr->gr_gid;
X			key.dptr = grpkey;
X			memcpy (grpkey, &i, sizeof i);
X			memcpy (grpkey + sizeof i, &gr->gr_gid,
X				sizeof gr->gr_gid);
X			if (dbm_store (gr_dbm, key, content, DBM_REPLACE))
X				return 0;
X		}
X	}
X	return 1;
X}
X#endif
SHAR_EOF
if test 2117 -ne "`wc -c < 'grdbm.c'`"
then
	echo shar: "error transmitting 'grdbm.c'" '(should have been 2117 characters)'
fi
fi
echo shar: "extracting 'gshadow.c'" '(4652 characters)'
if test -f 'gshadow.c'
then
	echo shar: "will not over-write existing file 'gshadow.c'"
else
sed 's/^X//' << \SHAR_EOF > 'gshadow.c'
X/*
X * Copyright 1990, John F. Haugh II
X * All rights reserved.
X *
X * Permission is granted to copy and create derivative works for any
X * non-commercial purpose, provided this copyright notice is preserved
X * in all copies of source code, or included in human readable form
X * and conspicuously displayed on all copies of object code or
X * distribution media.
X */
X
X#include "shadow.h"
X#include "config.h"
X#include <stdio.h>
X#ifndef	BSD
X#include <string.h>
X#include <memory.h>
X#else
X#include <strings.h>
X#define	strchr	index
X#define	strrchr	rindex
X#endif
X
X#ifdef	NDBM
X#include <ndbm.h>
X#include <fcntl.h>
XDBM	*sg_dbm;
Xint	sg_dbm_mode;
Xstatic	int	dbmopened;
Xstatic	int	dbmerror;
X#endif
X
X
X#ifndef	lint
Xstatic	char	sccsid[] = "@(#)gshadow.c	3.3	11:25:55	12/19/90";
X#endif
X
X#define	MAXMEM	1024
X
Xstatic	FILE	*shadow;
Xstatic	char	*sgrpfile = "/etc/gshadow";
Xstatic	char	sgrbuf[BUFSIZ*4];
Xstatic	char	*members[MAXMEM+1];
Xstatic	char	*admins[MAXMEM+1];
Xstatic	struct	sgrp	sgroup;
X
Xextern	char	*fgetsx();
Xextern	int	fputsx();
X
X#define	FIELDS	4
X
Xstatic char **
Xlist (s, l)
Xchar	*s;
Xchar	**l;
X{
X	int	nmembers = 0;
X
X	while (*s) {
X		l[nmembers++] = s;
X		if (s = strchr (s, ','))
X			*s++ = '\0';
X	}
X	l[nmembers] = (char *) 0;
X	return l;
X}
X
Xvoid
Xsetsgent ()
X{
X#ifdef	NDBM
X	int	mode;
X#endif	/* NDBM */
X
X	if (shadow)
X		rewind (shadow);
X	else
X		shadow = fopen (GSHADOW, "r");
X
X	/*
X	 * Attempt to open the DBM files if they have never been opened
X	 * and an error has never been returned.
X	 */
X
X#ifdef NDBM
X	if (! dbmerror && ! dbmopened) {
X		char	dbmfiles[BUFSIZ];
X
X		strcpy (dbmfiles, sgrpfile);
X		strcat (dbmfiles, ".pag");
X		if (sg_dbm_mode != -1)
X			mode = O_RDONLY;
X		else
X			mode = (sg_dbm_mode == O_RDONLY ||
X				sg_dbm_mode == O_RDWR) ? sg_dbm_mode:O_RDONLY;
X
X		if (access (dbmfiles, 0) ||
X			(! (sg_dbm = dbm_open (sgrpfile, mode, 0))))
X			dbmerror = 1;
X		else
X			dbmopened = 1;
X	}
X#endif	/* NDBM */
X}
X
Xvoid
Xendsgent ()
X{
X	if (shadow)
X		(void) fclose (shadow);
X
X	shadow = (FILE *) 0;
X#ifdef	NDBM
X	if (dbmopened && sg_dbm) {
X		dbm_close (sg_dbm);
X		dbmopened = 0;
X		sg_dbm = 0;
X	}
X#endif
X}
X
Xstruct sgrp *
Xsgetsgent (string)
Xchar	*string;
X{
X	char	*fields[FIELDS];
X	char	*cp;
X	char	*cpp;
X	int	atoi ();
X	long	atol ();
X	int	i;
X
X	strncpy (sgrbuf, string, sizeof sgrbuf - 1);
X	sgrbuf[sizeof sgrbuf - 1] = '\0';
X
X	if (cp = strrchr (sgrbuf, '\n'))
X		*cp = '\0';
X
X	for (cp = sgrbuf, i = 0;*cp && i < FIELDS;i++) {
X		fields[i] = cp;
X		while (*cp && *cp != ':')
X			cp++;
X
X		if (*cp)
X			*cp++ = '\0';
X	}
X	if (*cp || i != FIELDS)
X		return 0;
X
X	sgroup.sg_name = fields[0];
X	sgroup.sg_passwd = fields[1];
X	sgroup.sg_adm = list (fields[2], admins);
X	sgroup.sg_mem = list (fields[3], members);
X
X	return &sgroup;
X}
X
Xstruct sgrp
X*fgetsgent (fp)
XFILE	*fp;
X{
X	char	buf[sizeof sgrbuf];
X
X	if (! fp)
X		return (0);
X
X	if (fgetsx (buf, sizeof buf, fp) == (char *) 0)
X		return (0);
X
X	return sgetsgent (buf);
X}
X
Xstruct sgrp
X*getsgent ()
X{
X	if (! shadow)
X		setsgent ();
X
X	return (fgetsgent (shadow));
X}
X
Xstruct sgrp *
Xgetsgnam (name)
Xchar	*name;
X{
X	struct	sgrp	*sgrp;
X#ifdef NDBM
X	datum	key;
X	datum	content;
X#endif
X
X	setsgent ();
X
X#ifdef NDBM
X
X	/*
X	 * If the DBM file are now open, create a key for this group and
X	 * try to fetch the entry from the database.  A matching record
X	 * will be unpacked into a static structure and returned to
X	 * the user.
X	 */
X
X	if (dbmopened) {
X		key.dsize = strlen (name);
X		key.dptr = name;
X
X		content = dbm_fetch (sg_dbm, key);
X		if (content.dptr != 0) {
X			memcpy (sgrbuf, content.dptr, content.dsize);
X			sgroup.sg_mem = members;
X			sgroup.sg_adm = admins;
X			sgr_unpack (sgrbuf, content.dsize, &sgroup);
X			return &sgroup;
X		}
X	}
X#endif
X	while ((sgrp = getsgent ()) != (struct sgrp *) 0) {
X		if (strcmp (name, sgrp->sg_name) == 0)
X			return (sgrp);
X	}
X	return (0);
X}
X
Xint
Xputsgent (sgrp, fp)
Xstruct	sgrp	*sgrp;
XFILE	*fp;
X{
X	char	buf[sizeof sgrbuf];
X	char	*cp = buf;
X	int	errors = 0;
X	int	i;
X
X	if (! fp || ! sgrp)
X		return -1;
X
X	/*
X	 * Copy the group name and passwd.
X	 */
X
X	strcpy (cp, sgrp->sg_name);
X	cp += strlen (cp);
X	*cp++ = ':';
X
X	strcpy (cp, sgrp->sg_passwd);
X	cp += strlen (cp);
X	*cp++ = ':';
X
X	/*
X	 * Copy the administrators, separating each from the other
X	 * with a ",".
X	 */
X
X	for (i = 0;sgrp->sg_adm[i];i++) {
X		if (i > 0)
X			*cp++ = ',';
X
X		strcpy (cp, sgrp->sg_adm[i]);
X		cp += strlen (cp);
X	}
X	*cp++ = ':';
X
X	/*
X	 * Now do likewise with the group members.
X	 */
X
X	for (i = 0;sgrp->sg_mem[i];i++) {
X		if (i > 0)
X			*cp++ = ',';
X
X		strcpy (cp, sgrp->sg_mem[i]);
X		cp += strlen (cp);
X	}
X	*cp++ = '\n';
X	*cp = '\0';
X
X	/*
X	 * Output using the function which understands the line
X	 * continuation conventions.
X	 */
X
X	return fputsx (buf, fp);
X}
SHAR_EOF
if test 4652 -ne "`wc -c < 'gshadow.c'`"
then
	echo shar: "error transmitting 'gshadow.c'" '(should have been 4652 characters)'
fi
fi
echo shar: "extracting 'sppack.c'" '(2142 characters)'
if test -f 'sppack.c'
then
	echo shar: "will not over-write existing file 'sppack.c'"
else
sed 's/^X//' << \SHAR_EOF > 'sppack.c'
X/*
X * Copyright 1990, John F. Haugh II
X * All rights reserved.
X *
X * Use, duplication, and disclosure prohibited without
X * the express written permission of the author.
X *
X * Duplication is permitted for non-commercial [ profit making ]
X * purposes provided this and other copyright notices remain
X * intact.
X */
X
X#include <stdio.h>
X#ifdef	BSD
X#include <strings.h>
X#else
X#include <string.h>
X#endif
X
X#include "shadow.h"
X
X#ifndef	lint
Xstatic	char	sccsid[] = "@(#)sppack.c	3.1	08:16:27	11/21/90";
X#endif
X
Xint	spw_pack (spwd, buf)
Xstruct	spwd	*spwd;
Xchar	*buf;
X{
X	char	*cp;
X
X	cp = buf;
X	strcpy (cp, spwd->sp_namp);
X	cp += strlen (cp) + 1;
X
X	strcpy (cp, spwd->sp_pwdp);
X	cp += strlen (cp) + 1;
X
X	memcpy (cp, &spwd->sp_min, sizeof spwd->sp_min);
X	cp += sizeof spwd->sp_min;
X
X	memcpy (cp, &spwd->sp_max, sizeof spwd->sp_max);
X	cp += sizeof spwd->sp_max;
X
X	memcpy (cp, &spwd->sp_lstchg, sizeof spwd->sp_lstchg);
X	cp += sizeof spwd->sp_lstchg;
X
X	memcpy (cp, &spwd->sp_warn, sizeof spwd->sp_warn);
X	cp += sizeof spwd->sp_warn;
X
X	memcpy (cp, &spwd->sp_inact, sizeof spwd->sp_inact);
X	cp += sizeof spwd->sp_inact;
X
X	memcpy (cp, &spwd->sp_expire, sizeof spwd->sp_expire);
X	cp += sizeof spwd->sp_expire;
X
X	memcpy (cp, &spwd->sp_flag, sizeof spwd->sp_flag);
X	cp += sizeof spwd->sp_flag;
X
X	return cp - buf;
X}
X
Xint	spw_unpack (buf, len, spwd)
Xchar	*buf;
Xint	len;
Xstruct	spwd	*spwd;
X{
X	char	*org = buf;
X	char	*cp;
X
X	spwd->sp_namp = buf;
X	buf += strlen (buf) + 1;
X
X	spwd->sp_pwdp = buf;
X	buf += strlen (buf) + 1;
X
X	memcpy (&spwd->sp_min, buf, sizeof spwd->sp_min);
X	buf += sizeof spwd->sp_min;
X
X	memcpy (&spwd->sp_max, buf, sizeof spwd->sp_max);
X	buf += sizeof spwd->sp_max;
X
X	memcpy (&spwd->sp_lstchg, buf, sizeof spwd->sp_lstchg);
X	buf += sizeof spwd->sp_lstchg;
X
X	memcpy (&spwd->sp_warn, buf, sizeof spwd->sp_warn);
X	buf += sizeof spwd->sp_warn;
X
X	memcpy (&spwd->sp_inact, buf, sizeof spwd->sp_inact);
X	buf += sizeof spwd->sp_inact;
X
X	memcpy (&spwd->sp_expire, buf, sizeof spwd->sp_expire);
X	buf += sizeof spwd->sp_expire;
X
X	memcpy (&spwd->sp_flag, buf, sizeof spwd->sp_flag);
X	buf += sizeof spwd->sp_flag;
X
X	if (buf - org > len)
X		return -1;
X
X	return 0;
X}
SHAR_EOF
if test 2142 -ne "`wc -c < 'sppack.c'`"
then
	echo shar: "error transmitting 'sppack.c'" '(should have been 2142 characters)'
fi
fi
exit 0
#	End of shell archive
-- 
John F. Haugh II        | Distribution to  | UUCP: ...!cs.utexas.edu!rpp386!jfh
Ma Bell: (512) 255-8251 | GEnie PROHIBITED :-) |  Domain: jfh at rpp386.cactus.org
"If liberals interpreted the 2nd Amendment the same way they interpret the
 rest of the Constitution, gun ownership would be mandatory."