[unix-history] / usr.sbin / pwd_mkdb / pwd_mkdb.c

/*-
 * Copyright (c) 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1991 The Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)pwd_mkdb.c	5.5 (Berkeley) 5/6/91";
#endif /* not lint */

#include <sys/param.h>
#include <sys/stat.h>
#include <signal.h>
#include <fcntl.h>
#include <db.h>
#include <pwd.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#define PW_COMPACT
/* Compact pwd.db/spwd.db structure by Alex G. Bulushev, bag@demos.su */
#ifdef PW_COMPACT
# define HI_BSIZE 1024
# define HI_CACHE (512 * 1024)
# define HI_SCACHE (128 * 1024)
#else
# define HI_BSIZE 4096
# define HI_CACHE (2048 * 1024)
#endif

#define	INSECURE	1
#define	SECURE		2
#define	PERM_INSECURE	(S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)
#define	PERM_SECURE	(S_IRUSR|S_IWUSR)

HASHINFO openinfo = {
      HI_BSIZE,         /* bsize */
      32,               /* ffactor */
      256,              /* nelem */
      HI_CACHE,         /* cachesize */
      NULL,             /* hash() */
      0                 /* lorder */
};

#ifdef PW_COMPACT
HASHINFO sopeninfo = {
      HI_BSIZE,         /* bsize */
      32,               /* ffactor */
      256,              /* nelem */
      HI_SCACHE,        /* cachesize */
      NULL,             /* hash() */
      0                 /* lorder */
};
#endif

char *progname = "pwd_mkdb";

static enum state { FILE_INSECURE, FILE_SECURE, FILE_ORIG } clean;
static struct passwd pwd;			/* password structure */
static char *pname;				/* password file name */
static char prefix[MAXPATHLEN];

main(argc, argv)
	int argc;
	char **argv;
{
	extern int optind;
	register int len, makeold;
	register char *p, *t;
	FILE *fp, *oldfp;
	DB *dp, *edp;
	sigset_t set;
	DBT data, key;
#ifdef PW_COMPACT
	DBT pdata, sdata;
#endif
	int ch, cnt, tfd;
	char buf[MAX(MAXPATHLEN, LINE_MAX * 2)], tbuf[1024];
	char buf2[MAXPATHLEN];

	strcpy(prefix, _PATH_PWD);
	makeold = 0;
	while ((ch = getopt(argc, argv, "d:pv")) != EOF)
		switch(ch) {
		case 'd':
			strcpy(prefix, optarg);
			break;
		case 'p':			/* create V7 "file.orig" */
			makeold = 1;
			break;
		case 'v':                       /* backward compatible */
			break;
		case '?':
		default:
			usage();
		}
	argc -= optind;
	argv += optind;

	if (argc != 1)
		usage();

	/*
	 * This could be done to allow the user to interrupt.  Probably
	 * not worth the effort.
	 */
	sigemptyset(&set);
	sigaddset(&set, SIGTSTP);
	sigaddset(&set, SIGHUP);
	sigaddset(&set, SIGINT);
	sigaddset(&set, SIGQUIT);
	sigaddset(&set, SIGTERM);
	(void)sigprocmask(SIG_BLOCK, &set, (sigset_t *)NULL);

	pname = *argv;
	/* Open the original password file */
	if (!(fp = fopen(pname, "r")))
		error(pname);

	/* Open the temporary insecure password database. */
	(void)sprintf(buf, "%s/%s.tmp", prefix, _MP_DB);
	dp = dbopen(buf,
	    O_RDWR|O_CREAT|O_EXCL, PERM_INSECURE, DB_HASH, &openinfo);
	if (!dp)
		error(buf);
	clean = FILE_INSECURE;

#ifdef PW_COMPACT
	/* Open the temporary encrypted password database. */
	(void)sprintf(buf, "%s/%s.tmp", prefix, _SMP_DB);
	edp = dbopen(buf,
	    O_RDWR|O_CREAT|O_EXCL, PERM_SECURE, DB_HASH, &sopeninfo);
	if (!edp)
		error(buf);
	clean = FILE_SECURE;
#endif

	/*
	 * Open file for old password file.  Minor trickiness -- don't want to
	 * chance the file already existing, since someone (stupidly) might
	 * still be using this for permission checking.  So, open it first and
	 * fdopen the resulting fd.  Don't really care who reads it.
	 */
	if (makeold) {
		(void)sprintf(buf, "%s.orig", pname);
		if ((tfd = open(buf,
		    O_WRONLY|O_CREAT|O_EXCL, PERM_INSECURE)) < 0)
			error(buf);
		if (!(oldfp = fdopen(tfd, "w")))
			error(buf);
		clean = FILE_ORIG;
	}

	/*
	 * The databases actually contain three copies of the original data.
	 * Each password file entry is converted into a rough approximation
	 * of a ``struct passwd'', with the strings placed inline.  This
	 * object is then stored as the data for three separate keys.  The
	 * first key * is the pw_name field prepended by the _PW_KEYBYNAME
	 * character.  The second key is the pw_uid field prepended by the
	 * _PW_KEYBYUID character.  The third key is the line number in the
	 * original file prepended by the _PW_KEYBYNUM character.  (The special
	 * characters are prepended to ensure that the keys do not collide.)
	 */
	data.data = (u_char *)buf;
	key.data = (u_char *)tbuf;
	for (cnt = 1; scan(fp, &pwd); ++cnt) {
#ifdef PW_COMPACT
		pdata.data = (u_char *)&cnt;
		pdata.size = sizeof(int);
		sdata.data = (u_char *)pwd.pw_passwd;
		sdata.size = strlen(pwd.pw_passwd) + 1;
#endif
#define	COMPACT(e)	t = e; while (*p++ = *t++);
		/* Create insecure data. */
		p = buf;
		COMPACT(pwd.pw_name);
#ifndef PW_COMPACT
		COMPACT("*");
#endif
		bcopy((char *)&pwd.pw_uid, p, sizeof(int));
		p += sizeof(int);
		bcopy((char *)&pwd.pw_gid, p, sizeof(int));
		p += sizeof(int);
		bcopy((char *)&pwd.pw_change, p, sizeof(time_t));
		p += sizeof(time_t);
		COMPACT(pwd.pw_class);
		COMPACT(pwd.pw_gecos);
		COMPACT(pwd.pw_dir);
		COMPACT(pwd.pw_shell);
		bcopy((char *)&pwd.pw_expire, p, sizeof(time_t));
		p += sizeof(time_t);
		data.size = p - buf;

		/* Store insecure by name. */
		tbuf[0] = _PW_KEYBYNAME;
		len = strlen(pwd.pw_name);
		bcopy(pwd.pw_name, tbuf + 1, len);
		key.size = len + 1;
#ifdef PW_COMPACT
		if ((dp->put)(dp, &key, &pdata, R_NOOVERWRITE) == -1)
#else
		if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
#endif
			error("put");

		/* Store insecure by uid. */
		tbuf[0] = _PW_KEYBYUID;
		bcopy((char *)&pwd.pw_uid, tbuf + 1, sizeof(pwd.pw_uid));
		key.size = sizeof(pwd.pw_uid) + 1;
#ifdef PW_COMPACT
		if ((dp->put)(dp, &key, &pdata, R_NOOVERWRITE) == -1)
#else
		if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
#endif
			error("put");

		/* Store insecure by number. */
		tbuf[0] = _PW_KEYBYNUM;
		bcopy((char *)&cnt, tbuf + 1, sizeof(cnt));
		key.size = sizeof(cnt) + 1;
		if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
			error("put");

#ifdef PW_COMPACT
		/* Store secure. */
		if ((edp->put)(edp, &key, &sdata, R_NOOVERWRITE) == -1)
			error("put");
#endif

		/* Create original format password file entry */
		if (makeold)
			(void)fprintf(oldfp, "%s:*:%d:%d:%s:%s:%s\n",
			    pwd.pw_name, pwd.pw_uid, pwd.pw_gid, pwd.pw_gecos,
			    pwd.pw_dir, pwd.pw_shell);

	}
	(void)(dp->close)(dp);
#ifdef PW_COMPACT
	(void)(edp->close)(edp);
#endif

	if (makeold) {
		(void)fflush(oldfp);
		(void)fsync(fileno(oldfp));
		(void)fclose(oldfp);
	}

#ifndef PW_COMPACT
	/* Open the temporary encrypted password database. */
	(void)sprintf(buf, "%s/%s.tmp", prefix, _SMP_DB);
	edp = dbopen(buf,
	    O_RDWR|O_CREAT|O_EXCL, PERM_SECURE, DB_HASH, &openinfo);
	if (!edp)
		error(buf);
	clean = FILE_SECURE;

	rewind(fp);
	for (cnt = 1; scan(fp, &pwd); ++cnt) {

		/* Create secure data. */
		p = buf;
		COMPACT(pwd.pw_name);
		COMPACT(pwd.pw_passwd);
		bcopy((char *)&pwd.pw_uid, p, sizeof(int));
		p += sizeof(int);
		bcopy((char *)&pwd.pw_gid, p, sizeof(int));
		p += sizeof(int);
		bcopy((char *)&pwd.pw_change, p, sizeof(time_t));
		p += sizeof(time_t);
		COMPACT(pwd.pw_class);
		COMPACT(pwd.pw_gecos);
		COMPACT(pwd.pw_dir);
		COMPACT(pwd.pw_shell);
		bcopy((char *)&pwd.pw_expire, p, sizeof(time_t));
		p += sizeof(time_t);
		data.size = p - buf;

		/* Store secure by name. */
		tbuf[0] = _PW_KEYBYNAME;
		len = strlen(pwd.pw_name);
		bcopy(pwd.pw_name, tbuf + 1, len);
		key.size = len + 1;
		if ((edp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
			error("put");

		/* Store secure by number. */
		tbuf[0] = _PW_KEYBYNUM;
		bcopy((char *)&cnt, tbuf + 1, sizeof(cnt));
		key.size = sizeof(cnt) + 1;
		if ((edp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
			error("put");

		/* Store secure by uid. */
		tbuf[0] = _PW_KEYBYUID;
		bcopy((char *)&pwd.pw_uid, tbuf + 1, sizeof(pwd.pw_uid));
		key.size = sizeof(pwd.pw_uid) + 1;
		if ((edp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
			error("put");

	}

	(void)(edp->close)(edp);
#endif

	/* Set master.passwd permissions, in case caller forgot. */
	(void)fchmod(fileno(fp), S_IRUSR|S_IWUSR);
	(void)fclose(fp);

	/* Install as the real password files. */
	(void)sprintf(buf, "%s/%s.tmp", prefix, _MP_DB);
	(void)sprintf(buf2, "%s/%s", prefix, _MP_DB);
	mv(buf, buf2);
	(void)sprintf(buf, "%s/%s.tmp", prefix, _SMP_DB);
	(void)sprintf(buf2, "%s/%s", prefix, _SMP_DB);
	mv(buf, buf2);
	if (makeold) {
		(void)sprintf(buf2, "%s/%s", prefix, _PASSWD);
		(void)sprintf(buf, "%s.orig", pname);
		mv(buf, buf2); 
	}
	/*
	 * Move the master password LAST -- chpass(1), passwd(1) and vipw(8)
	 * all use flock(2) on it to block other incarnations of themselves.
	 * The rename means that everything is unlocked, as the original file
	 * can no longer be accessed.
	 */
	(void)sprintf(buf, "%s/%s", prefix, _MASTERPASSWD);
	mv(pname, buf); 
	exit(0);
}

int
scan(fp, pw)
	FILE *fp;
	struct passwd *pw;
{
	static int lcnt;
	static char line[LINE_MAX];
	char *p;

	if (!fgets(line, sizeof(line), fp))
		return(0);
	++lcnt;
	/*
	 * ``... if I swallow anything evil, put your fingers down my
	 * throat...''
	 *	-- The Who
	 */
	if (!(p = index(line, '\n'))) {
		(void)fprintf(stderr, "pwd_mkdb: line too long\n");
		goto fmt;

	}
	*p = '\0';
	if (!pw_scan(line, pw)) {
		(void)fprintf(stderr, "pwd_mkdb: at line #%d.\n", lcnt);
fmt:		errno = EFTYPE;
		error(pname);
	}
	return(1);
}

mv(from, to)
	char *from, *to;
{
	int sverrno;
	char buf[MAXPATHLEN];

	if (rename(from, to)) {
		sverrno = errno;
		(void)sprintf(buf, "%s to %s", from, to);
		errno = sverrno;
		error(buf);
	}
}

error(name)
	char *name;
{
	(void)fprintf(stderr, "pwd_mkdb: %s: %s\n", name, strerror(errno));
	cleanup();
	exit(1);
}

cleanup()
{
	char buf[MAXPATHLEN];

	switch(clean) {
	case FILE_ORIG:
		(void)sprintf(buf, "%s.orig", pname);
		(void)unlink(buf);
		/* FALLTHROUGH */
	case FILE_SECURE:
		(void)sprintf(buf, "%s/%s.tmp", prefix, _SMP_DB);
		(void)unlink(buf);
		/* FALLTHROUGH */
	case FILE_INSECURE:
		(void)sprintf(buf, "%s/%s.tmp", prefix, _MP_DB);
		(void)unlink(buf);
	}
}

usage()
{
	(void)fprintf(stderr, "usage: pwd_mkdb [-p] [-d <dest dir>] file\n");
	exit(1);
}
Commit	Line	Data
15637ed4 RG	1	/*-
	2	* Copyright (c) 1991 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*/
	33
	34	#ifndef lint
	35	char copyright[] =
	36	"@(#) Copyright (c) 1991 The Regents of the University of California.\n\
	37	All rights reserved.\n";
	38	#endif /* not lint */
	39
	40	#ifndef lint
	41	static char sccsid[] = "@(#)pwd_mkdb.c 5.5 (Berkeley) 5/6/91";
	42	#endif /* not lint */
	43
	44	#include <sys/param.h>
	45	#include <sys/stat.h>
	46	#include <signal.h>
	47	#include <fcntl.h>
	48	#include <db.h>
	49	#include <pwd.h>
	50	#include <errno.h>
	51	#include <limits.h>
	52	#include <stdio.h>
	53	#include <string.h>
0e7b8dd7	54	#include <stdlib.h>
15637ed4	55
a312835c AC	56	#define PW_COMPACT
	57	/* Compact pwd.db/spwd.db structure by Alex G. Bulushev, bag@demos.su */
	58	#ifdef PW_COMPACT
	59	# define HI_BSIZE 1024
	60	# define HI_CACHE (512 * 1024)
	61	# define HI_SCACHE (128 * 1024)
	62	#else
	63	# define HI_BSIZE 4096
	64	# define HI_CACHE (2048 * 1024)
	65	#endif
	66
15637ed4 RG	67	#define INSECURE 1
	68	#define SECURE 2
	69	#define PERM_INSECURE (S_IRUSR\|S_IWUSR\|S_IRGRP\|S_IROTH)
	70	#define PERM_SECURE (S_IRUSR\|S_IWUSR)
	71
a312835c AC	72	HASHINFO openinfo = {
	73	HI_BSIZE, /* bsize */
	74	32, /* ffactor */
	75	256, /* nelem */
	76	HI_CACHE, /* cachesize */
	77	NULL, /* hash() */
	78	0 /* lorder */
	79	};
	80
	81	#ifdef PW_COMPACT
	82	HASHINFO sopeninfo = {
	83	HI_BSIZE, /* bsize */
	84	32, /* ffactor */
	85	256, /* nelem */
	86	HI_SCACHE, /* cachesize */
	87	NULL, /* hash() */
	88	0 /* lorder */
	89	};
	90	#endif
	91
15637ed4 RG	92	char *progname = "pwd_mkdb";
	93
	94	static enum state { FILE_INSECURE, FILE_SECURE, FILE_ORIG } clean;
	95	static struct passwd pwd; /* password structure */
	96	static char pname; / password file name */
0e7b8dd7	97	static char prefix[MAXPATHLEN];
15637ed4 RG	98
	99	main(argc, argv)
	100	int argc;
	101	char **argv;
	102	{
	103	extern int optind;
	104	register int len, makeold;
	105	register char p, t;
	106	FILE fp, oldfp;
	107	DB dp, edp;
	108	sigset_t set;
	109	DBT data, key;
a312835c AC	110	#ifdef PW_COMPACT
	111	DBT pdata, sdata;
	112	#endif
15637ed4 RG	113	int ch, cnt, tfd;
15637ed4 RG	114	char buf[MAX(MAXPATHLEN, LINE_MAX * 2)], tbuf[1024];
0e7b8dd7	115	char buf2[MAXPATHLEN];
15637ed4	116
0e7b8dd7	117	strcpy(prefix, _PATH_PWD);
15637ed4	118	makeold = 0;
0e7b8dd7	119	while ((ch = getopt(argc, argv, "d:pv")) != EOF)
15637ed4	120	switch(ch) {
0e7b8dd7 SW	121	case 'd':
	122	strcpy(prefix, optarg);
	123	break;
15637ed4 RG	124	case 'p': /* create V7 "file.orig" */
	125	makeold = 1;
	126	break;
0e7b8dd7	127	case 'v': /* backward compatible */
15637ed4 RG	128	break;
	129	case '?':
	130	default:
	131	usage();
	132	}
	133	argc -= optind;
	134	argv += optind;
	135
	136	if (argc != 1)
	137	usage();
	138
	139	/*
	140	* This could be done to allow the user to interrupt. Probably
	141	* not worth the effort.
	142	*/
	143	sigemptyset(&set);
	144	sigaddset(&set, SIGTSTP);
	145	sigaddset(&set, SIGHUP);
	146	sigaddset(&set, SIGINT);
	147	sigaddset(&set, SIGQUIT);
	148	sigaddset(&set, SIGTERM);
	149	(void)sigprocmask(SIG_BLOCK, &set, (sigset_t *)NULL);
	150
	151	pname = *argv;
	152	/* Open the original password file */
	153	if (!(fp = fopen(pname, "r")))
	154	error(pname);
	155
	156	/* Open the temporary insecure password database. */
0e7b8dd7	157	(void)sprintf(buf, "%s/%s.tmp", prefix, _MP_DB);
a312835c AC	158	dp = dbopen(buf,
a312835c AC	159	O_RDWR\|O_CREAT\|O_EXCL, PERM_INSECURE, DB_HASH, &openinfo);
15637ed4 RG	160	if (!dp)
	161	error(buf);
	162	clean = FILE_INSECURE;
	163
a312835c	164	#ifdef PW_COMPACT
15637ed4	165	/* Open the temporary encrypted password database. */
0e7b8dd7	166	(void)sprintf(buf, "%s/%s.tmp", prefix, _SMP_DB);
a312835c AC	167	edp = dbopen(buf,
a312835c AC	168	O_RDWR\|O_CREAT\|O_EXCL, PERM_SECURE, DB_HASH, &sopeninfo);
15637ed4 RG	169	if (!edp)
	170	error(buf);
	171	clean = FILE_SECURE;
a312835c	172	#endif
15637ed4 RG	173
	174	/*
	175	* Open file for old password file. Minor trickiness -- don't want to
	176	* chance the file already existing, since someone (stupidly) might
	177	* still be using this for permission checking. So, open it first and
	178	* fdopen the resulting fd. Don't really care who reads it.
	179	*/
	180	if (makeold) {
	181	(void)sprintf(buf, "%s.orig", pname);
	182	if ((tfd = open(buf,
	183	O_WRONLY\|O_CREAT\|O_EXCL, PERM_INSECURE)) < 0)
	184	error(buf);
	185	if (!(oldfp = fdopen(tfd, "w")))
	186	error(buf);
	187	clean = FILE_ORIG;
	188	}
	189
	190	/*
	191	* The databases actually contain three copies of the original data.
	192	* Each password file entry is converted into a rough approximation
	193	* of a ``struct passwd'', with the strings placed inline. This
	194	* object is then stored as the data for three separate keys. The
	195	* first key * is the pw_name field prepended by the _PW_KEYBYNAME
	196	* character. The second key is the pw_uid field prepended by the
	197	* _PW_KEYBYUID character. The third key is the line number in the
	198	* original file prepended by the _PW_KEYBYNUM character. (The special
	199	* characters are prepended to ensure that the keys do not collide.)
	200	*/
	201	data.data = (u_char *)buf;
	202	key.data = (u_char *)tbuf;
	203	for (cnt = 1; scan(fp, &pwd); ++cnt) {
a312835c AC	204	#ifdef PW_COMPACT
	205	pdata.data = (u_char *)&cnt;
	206	pdata.size = sizeof(int);
	207	sdata.data = (u_char *)pwd.pw_passwd;
	208	sdata.size = strlen(pwd.pw_passwd) + 1;
	209	#endif
15637ed4 RG	210	#define COMPACT(e) t = e; while (p++ = t++);
	211	/* Create insecure data. */
	212	p = buf;
	213	COMPACT(pwd.pw_name);
a312835c	214	#ifndef PW_COMPACT
15637ed4	215	COMPACT("*");
a312835c	216	#endif
15637ed4 RG	217	bcopy((char *)&pwd.pw_uid, p, sizeof(int));
	218	p += sizeof(int);
	219	bcopy((char *)&pwd.pw_gid, p, sizeof(int));
	220	p += sizeof(int);
	221	bcopy((char *)&pwd.pw_change, p, sizeof(time_t));
	222	p += sizeof(time_t);
	223	COMPACT(pwd.pw_class);
	224	COMPACT(pwd.pw_gecos);
	225	COMPACT(pwd.pw_dir);
	226	COMPACT(pwd.pw_shell);
	227	bcopy((char *)&pwd.pw_expire, p, sizeof(time_t));
	228	p += sizeof(time_t);
	229	data.size = p - buf;
	230
	231	/* Store insecure by name. */
	232	tbuf[0] = _PW_KEYBYNAME;
	233	len = strlen(pwd.pw_name);
	234	bcopy(pwd.pw_name, tbuf + 1, len);
	235	key.size = len + 1;
a312835c AC	236	#ifdef PW_COMPACT
	237	if ((dp->put)(dp, &key, &pdata, R_NOOVERWRITE) == -1)
	238	#else
	239	if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
	240	#endif
	241	error("put");
	242
	243	/* Store insecure by uid. */
	244	tbuf[0] = _PW_KEYBYUID;
	245	bcopy((char *)&pwd.pw_uid, tbuf + 1, sizeof(pwd.pw_uid));
	246	key.size = sizeof(pwd.pw_uid) + 1;
	247	#ifdef PW_COMPACT
	248	if ((dp->put)(dp, &key, &pdata, R_NOOVERWRITE) == -1)
	249	#else
15637ed4	250	if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
a312835c	251	#endif
15637ed4 RG	252	error("put");
	253
	254	/* Store insecure by number. */
	255	tbuf[0] = _PW_KEYBYNUM;
	256	bcopy((char *)&cnt, tbuf + 1, sizeof(cnt));
	257	key.size = sizeof(cnt) + 1;
	258	if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
	259	error("put");
	260
a312835c AC	261	#ifdef PW_COMPACT
	262	/* Store secure. */
	263	if ((edp->put)(edp, &key, &sdata, R_NOOVERWRITE) == -1)
15637ed4	264	error("put");
a312835c AC	265	#endif
	266
	267	/* Create original format password file entry */
	268	if (makeold)
	269	(void)fprintf(oldfp, "%s:*:%d:%d:%s:%s:%s\n",
	270	pwd.pw_name, pwd.pw_uid, pwd.pw_gid, pwd.pw_gecos,
	271	pwd.pw_dir, pwd.pw_shell);
	272
	273	}
	274	(void)(dp->close)(dp);
	275	#ifdef PW_COMPACT
	276	(void)(edp->close)(edp);
	277	#endif
	278
	279	if (makeold) {
	280	(void)fflush(oldfp);
	281	(void)fsync(fileno(oldfp));
	282	(void)fclose(oldfp);
	283	}
	284
	285	#ifndef PW_COMPACT
	286	/* Open the temporary encrypted password database. */
	287	(void)sprintf(buf, "%s/%s.tmp", prefix, _SMP_DB);
	288	edp = dbopen(buf,
	289	O_RDWR\|O_CREAT\|O_EXCL, PERM_SECURE, DB_HASH, &openinfo);
	290	if (!edp)
	291	error(buf);
	292	clean = FILE_SECURE;
	293
	294	rewind(fp);
	295	for (cnt = 1; scan(fp, &pwd); ++cnt) {
15637ed4 RG	296
	297	/* Create secure data. */
	298	p = buf;
	299	COMPACT(pwd.pw_name);
	300	COMPACT(pwd.pw_passwd);
	301	bcopy((char *)&pwd.pw_uid, p, sizeof(int));
	302	p += sizeof(int);
	303	bcopy((char *)&pwd.pw_gid, p, sizeof(int));
	304	p += sizeof(int);
	305	bcopy((char *)&pwd.pw_change, p, sizeof(time_t));
	306	p += sizeof(time_t);
	307	COMPACT(pwd.pw_class);
	308	COMPACT(pwd.pw_gecos);
	309	COMPACT(pwd.pw_dir);
	310	COMPACT(pwd.pw_shell);
	311	bcopy((char *)&pwd.pw_expire, p, sizeof(time_t));
	312	p += sizeof(time_t);
	313	data.size = p - buf;
	314
	315	/* Store secure by name. */
	316	tbuf[0] = _PW_KEYBYNAME;
	317	len = strlen(pwd.pw_name);
	318	bcopy(pwd.pw_name, tbuf + 1, len);
	319	key.size = len + 1;
a312835c	320	if ((edp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
15637ed4 RG	321	error("put");
	322
	323	/* Store secure by number. */
	324	tbuf[0] = _PW_KEYBYNUM;
	325	bcopy((char *)&cnt, tbuf + 1, sizeof(cnt));
	326	key.size = sizeof(cnt) + 1;
a312835c	327	if ((edp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
15637ed4 RG	328	error("put");
	329
	330	/* Store secure by uid. */
	331	tbuf[0] = _PW_KEYBYUID;
	332	bcopy((char *)&pwd.pw_uid, tbuf + 1, sizeof(pwd.pw_uid));
	333	key.size = sizeof(pwd.pw_uid) + 1;
a312835c	334	if ((edp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
15637ed4 RG	335	error("put");
15637ed4 RG	336
15637ed4	337	}
a312835c	338
15637ed4	339	(void)(edp->close)(edp);
a312835c	340	#endif
15637ed4 RG	341
	342	/* Set master.passwd permissions, in case caller forgot. */
	343	(void)fchmod(fileno(fp), S_IRUSR\|S_IWUSR);
	344	(void)fclose(fp);
	345
	346	/* Install as the real password files. */
0e7b8dd7 SW	347	(void)sprintf(buf, "%s/%s.tmp", prefix, _MP_DB);
	348	(void)sprintf(buf2, "%s/%s", prefix, _MP_DB);
	349	mv(buf, buf2);
	350	(void)sprintf(buf, "%s/%s.tmp", prefix, _SMP_DB);
	351	(void)sprintf(buf2, "%s/%s", prefix, _SMP_DB);
	352	mv(buf, buf2);
15637ed4	353	if (makeold) {
0e7b8dd7	354	(void)sprintf(buf2, "%s/%s", prefix, _PASSWD);
15637ed4	355	(void)sprintf(buf, "%s.orig", pname);
0e7b8dd7	356	mv(buf, buf2);
15637ed4 RG	357	}
	358	/*
	359	* Move the master password LAST -- chpass(1), passwd(1) and vipw(8)
	360	* all use flock(2) on it to block other incarnations of themselves.
	361	* The rename means that everything is unlocked, as the original file
	362	* can no longer be accessed.
	363	*/
0e7b8dd7 SW	364	(void)sprintf(buf, "%s/%s", prefix, _MASTERPASSWD);
0e7b8dd7 SW	365	mv(pname, buf);
15637ed4 RG	366	exit(0);
	367	}
	368
a312835c	369	int
15637ed4 RG	370	scan(fp, pw)
	371	FILE *fp;
	372	struct passwd *pw;
	373	{
	374	static int lcnt;
	375	static char line[LINE_MAX];
	376	char *p;
	377
	378	if (!fgets(line, sizeof(line), fp))
	379	return(0);
	380	++lcnt;
	381	/*
	382	* ``... if I swallow anything evil, put your fingers down my
	383	* throat...''
	384	* -- The Who
	385	*/
	386	if (!(p = index(line, '\n'))) {
	387	(void)fprintf(stderr, "pwd_mkdb: line too long\n");
	388	goto fmt;
	389
	390	}
	391	*p = '\0';
	392	if (!pw_scan(line, pw)) {
	393	(void)fprintf(stderr, "pwd_mkdb: at line #%d.\n", lcnt);
	394	fmt: errno = EFTYPE;
	395	error(pname);
15637ed4	396	}
a312835c	397	return(1);
15637ed4 RG	398	}
	399
	400	mv(from, to)
	401	char from, to;
	402	{
	403	int sverrno;
	404	char buf[MAXPATHLEN];
	405
	406	if (rename(from, to)) {
	407	sverrno = errno;
	408	(void)sprintf(buf, "%s to %s", from, to);
	409	errno = sverrno;
	410	error(buf);
	411	}
	412	}
	413
	414	error(name)
	415	char *name;
	416	{
	417	(void)fprintf(stderr, "pwd_mkdb: %s: %s\n", name, strerror(errno));
	418	cleanup();
	419	exit(1);
	420	}
	421
	422	cleanup()
	423	{
	424	char buf[MAXPATHLEN];
	425
	426	switch(clean) {
	427	case FILE_ORIG:
	428	(void)sprintf(buf, "%s.orig", pname);
	429	(void)unlink(buf);
	430	/* FALLTHROUGH */
	431	case FILE_SECURE:
0e7b8dd7	432	(void)sprintf(buf, "%s/%s.tmp", prefix, _SMP_DB);
15637ed4 RG	433	(void)unlink(buf);
	434	/* FALLTHROUGH */
	435	case FILE_INSECURE:
0e7b8dd7	436	(void)sprintf(buf, "%s/%s.tmp", prefix, _MP_DB);
15637ed4 RG	437	(void)unlink(buf);
	438	}
	439	}
	440
	441	usage()
	442	{
0e7b8dd7	443	(void)fprintf(stderr, "usage: pwd_mkdb [-p] [-d <dest dir>] file\n");
15637ed4 RG	444	exit(1);
15637ed4 RG	445	}