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

/*-
 * Copyright (c) 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#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	5.4 (Berkeley) %G%";
#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>

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

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 */

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;
	int ch, cnt, tfd;
	char buf[MAX(MAXPATHLEN, LINE_MAX * 2)], tbuf[1024];

	makeold = 0;
	while ((ch = getopt(argc, argv, "pv")) != EOF)
		switch(ch) {
		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.tmp", _PATH_MP_DB);
	dp = hash_open(buf, O_WRONLY|O_CREAT|O_EXCL, PERM_INSECURE, NULL);
	if (!dp)
		error(buf);
	clean = FILE_INSECURE;

	/* Open the temporary encrypted password database. */
	(void)sprintf(buf, "%s.tmp", _PATH_SMP_DB);
	edp = hash_open(buf, O_WRONLY|O_CREAT|O_EXCL, PERM_SECURE, NULL);
	if (!edp)
		error(buf);
	clean = FILE_SECURE;

	/*
	 * 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;
	}

	data.data = (u_char *)buf;
	key.data = (u_char *)tbuf;
	for (cnt = 1; scan(fp, &pwd); ++cnt) {
#define	COMPACT(e)	t = e; while (*p++ = *t++);
		/* Create insecure data. */
		p = buf;
		COMPACT(pwd.pw_name);
		COMPACT("*");
		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;
		if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
			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");

		/* 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;
		if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
			error("put");

		/* 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 ((dp->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 ((dp->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 ((dp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
			error("put");

		/* 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);
	(void)(edp->close)(edp);
	if (makeold) {
		(void)fsync(oldfp);
		(void)fclose(oldfp);
	}

	/* 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.tmp", _PATH_MP_DB);
	mv(buf, _PATH_MP_DB);
	(void)sprintf(buf, "%s.tmp", _PATH_SMP_DB);
	mv(buf, _PATH_SMP_DB);
	if (makeold) {
		(void)sprintf(buf, "%s.orig", pname);
		mv(buf, _PATH_PASSWD);
	}
	/*
	 * 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.
	 */
	mv(pname, _PATH_MASTERPASSWD);
	exit(0);
}

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);
		exit(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.tmp", _PATH_SMP_DB);
		(void)unlink(buf);
		/* FALLTHROUGH */
	case FILE_INSECURE:
		(void)sprintf(buf, "%s.tmp", _PATH_MP_DB);
		(void)unlink(buf);
	}
}

usage()
{
	(void)fprintf(stderr, "usage: pwd_mkdb [-p] file\n");
	exit(1);
}
Commit	Line	Data
6257c216 KB	1	/*-
	2	* Copyright (c) 1991 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* %sccs.include.redist.c%
	6	*/
	7
	8	#ifndef lint
	9	char copyright[] =
	10	"@(#) Copyright (c) 1991 The Regents of the University of California.\n\
	11	All rights reserved.\n";
	12	#endif /* not lint */
	13
	14	#ifndef lint
506c5020	15	static char sccsid[] = "@(#)pwd_mkdb.c 5.4 (Berkeley) %G%";
6257c216 KB	16	#endif /* not lint */
	17
	18	#include <sys/param.h>
	19	#include <sys/stat.h>
	20	#include <signal.h>
	21	#include <fcntl.h>
c557c546	22	#include <db.h>
6257c216 KB	23	#include <pwd.h>
	24	#include <errno.h>
	25	#include <limits.h>
	26	#include <stdio.h>
	27	#include <string.h>
	28
	29	#define INSECURE 1
	30	#define SECURE 2
	31	#define PERM_INSECURE (S_IRUSR\|S_IWUSR\|S_IRGRP\|S_IROTH)
	32	#define PERM_SECURE (S_IRUSR\|S_IWUSR)
	33
	34	char *progname = "pwd_mkdb";
	35
	36	static enum state { FILE_INSECURE, FILE_SECURE, FILE_ORIG } clean;
	37	static struct passwd pwd; /* password structure */
	38	static char pname; / password file name */
	39
	40	main(argc, argv)
	41	int argc;
	42	char **argv;
	43	{
	44	extern int optind;
	45	register int len, makeold;
	46	register char p, t;
	47	FILE fp, oldfp;
c557c546	48	DB dp, edp;
6257c216	49	sigset_t set;
c557c546	50	DBT data, key;
6257c216 KB	51	int ch, cnt, tfd;
	52	char buf[MAX(MAXPATHLEN, LINE_MAX * 2)], tbuf[1024];
	53
	54	makeold = 0;
	55	while ((ch = getopt(argc, argv, "pv")) != EOF)
	56	switch(ch) {
	57	case 'p': /* create V7 "file.orig" */
	58	makeold = 1;
	59	break;
	60	case 'v': /* backward compatible */
	61	break;
	62	case '?':
	63	default:
	64	usage();
	65	}
	66	argc -= optind;
	67	argv += optind;
	68
	69	if (argc != 1)
	70	usage();
	71
	72	/*
	73	* This could be done to allow the user to interrupt. Probably
	74	* not worth the effort.
	75	*/
	76	sigemptyset(&set);
	77	sigaddset(&set, SIGTSTP);
	78	sigaddset(&set, SIGHUP);
	79	sigaddset(&set, SIGINT);
	80	sigaddset(&set, SIGQUIT);
	81	sigaddset(&set, SIGTERM);
	82	(void)sigprocmask(SIG_BLOCK, &set, (sigset_t *)NULL);
	83
	84	pname = *argv;
	85	/* Open the original password file */
	86	if (!(fp = fopen(pname, "r")))
	87	error(pname);
	88
c557c546	89	/* Open the temporary insecure password database. */
6257c216	90	(void)sprintf(buf, "%s.tmp", _PATH_MP_DB);
c557c546 KB	91	dp = hash_open(buf, O_WRONLY\|O_CREAT\|O_EXCL, PERM_INSECURE, NULL);
c557c546 KB	92	if (!dp)
6257c216 KB	93	error(buf);
	94	clean = FILE_INSECURE;
	95
c557c546	96	/* Open the temporary encrypted password database. */
6257c216	97	(void)sprintf(buf, "%s.tmp", _PATH_SMP_DB);
c557c546 KB	98	edp = hash_open(buf, O_WRONLY\|O_CREAT\|O_EXCL, PERM_SECURE, NULL);
c557c546 KB	99	if (!edp)
6257c216 KB	100	error(buf);
	101	clean = FILE_SECURE;
	102
	103	/*
	104	* Open file for old password file. Minor trickiness -- don't want to
	105	* chance the file already existing, since someone (stupidly) might
	106	* still be using this for permission checking. So, open it first and
	107	* fdopen the resulting fd. Don't really care who reads it.
	108	*/
	109	if (makeold) {
	110	(void)sprintf(buf, "%s.orig", pname);
	111	if ((tfd = open(buf,
	112	O_WRONLY\|O_CREAT\|O_EXCL, PERM_INSECURE)) < 0)
	113	error(buf);
	114	if (!(oldfp = fdopen(tfd, "w")))
	115	error(buf);
	116	clean = FILE_ORIG;
	117	}
	118
c557c546 KB	119	data.data = (u_char *)buf;
c557c546 KB	120	key.data = (u_char *)tbuf;
6257c216 KB	121	for (cnt = 1; scan(fp, &pwd); ++cnt) {
	122	#define COMPACT(e) t = e; while (p++ = t++);
	123	/* Create insecure data. */
	124	p = buf;
	125	COMPACT(pwd.pw_name);
	126	COMPACT("*");
	127	bcopy((char *)&pwd.pw_uid, p, sizeof(int));
	128	p += sizeof(int);
	129	bcopy((char *)&pwd.pw_gid, p, sizeof(int));
	130	p += sizeof(int);
	131	bcopy((char *)&pwd.pw_change, p, sizeof(time_t));
	132	p += sizeof(time_t);
	133	COMPACT(pwd.pw_class);
	134	COMPACT(pwd.pw_gecos);
	135	COMPACT(pwd.pw_dir);
	136	COMPACT(pwd.pw_shell);
	137	bcopy((char *)&pwd.pw_expire, p, sizeof(time_t));
	138	p += sizeof(time_t);
c557c546	139	data.size = p - buf;
6257c216 KB	140
	141	/* Store insecure by name. */
	142	tbuf[0] = _PW_KEYBYNAME;
	143	len = strlen(pwd.pw_name);
	144	bcopy(pwd.pw_name, tbuf + 1, len);
c557c546 KB	145	key.size = len + 1;
	146	if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
	147	error("put");
6257c216 KB	148
	149	/* Store insecure by number. */
	150	tbuf[0] = _PW_KEYBYNUM;
	151	bcopy((char *)&cnt, tbuf + 1, sizeof(cnt));
c557c546 KB	152	key.size = sizeof(cnt) + 1;
	153	if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
	154	error("put");
6257c216 KB	155
	156	/* Store insecure by uid. */
	157	tbuf[0] = _PW_KEYBYUID;
	158	bcopy((char *)&pwd.pw_uid, tbuf + 1, sizeof(pwd.pw_uid));
c557c546 KB	159	key.size = sizeof(pwd.pw_uid) + 1;
	160	if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
	161	error("put");
6257c216 KB	162
	163	/* Create secure data. */
	164	p = buf;
	165	COMPACT(pwd.pw_name);
	166	COMPACT(pwd.pw_passwd);
	167	bcopy((char *)&pwd.pw_uid, p, sizeof(int));
	168	p += sizeof(int);
	169	bcopy((char *)&pwd.pw_gid, p, sizeof(int));
	170	p += sizeof(int);
	171	bcopy((char *)&pwd.pw_change, p, sizeof(time_t));
	172	p += sizeof(time_t);
	173	COMPACT(pwd.pw_class);
	174	COMPACT(pwd.pw_gecos);
	175	COMPACT(pwd.pw_dir);
	176	COMPACT(pwd.pw_shell);
	177	bcopy((char *)&pwd.pw_expire, p, sizeof(time_t));
	178	p += sizeof(time_t);
c557c546	179	data.size = p - buf;
6257c216 KB	180
	181	/* Store secure by name. */
	182	tbuf[0] = _PW_KEYBYNAME;
	183	len = strlen(pwd.pw_name);
	184	bcopy(pwd.pw_name, tbuf + 1, len);
c557c546 KB	185	key.size = len + 1;
	186	if ((dp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
	187	error("put");
6257c216 KB	188
	189	/* Store secure by number. */
	190	tbuf[0] = _PW_KEYBYNUM;
	191	bcopy((char *)&cnt, tbuf + 1, sizeof(cnt));
c557c546 KB	192	key.size = sizeof(cnt) + 1;
	193	if ((dp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
	194	error("put");
6257c216 KB	195
	196	/* Store secure by uid. */
	197	tbuf[0] = _PW_KEYBYUID;
	198	bcopy((char *)&pwd.pw_uid, tbuf + 1, sizeof(pwd.pw_uid));
c557c546 KB	199	key.size = sizeof(pwd.pw_uid) + 1;
	200	if ((dp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
	201	error("put");
6257c216 KB	202
	203	/* Create original format password file entry */
	204	if (makeold)
	205	(void)fprintf(oldfp, "%s:*:%d:%d:%s:%s:%s\n",
	206	pwd.pw_name, pwd.pw_uid, pwd.pw_gid, pwd.pw_gecos,
	207	pwd.pw_dir, pwd.pw_shell);
	208	}
c557c546 KB	209	(void)(dp->close)(dp);
	210	(void)(edp->close)(edp);
	211	if (makeold) {
	212	(void)fsync(oldfp);
6257c216	213	(void)fclose(oldfp);
c557c546	214	}
6257c216 KB	215
6257c216 KB	216	/* Set master.passwd permissions, in case caller forgot. */
506c5020	217	(void)fchmod(fileno(fp), S_IRUSR\|S_IWUSR);
6257c216 KB	218	(void)fclose(fp);
	219
	220	/* Install as the real password files. */
c557c546	221	(void)sprintf(buf, "%s.tmp", _PATH_MP_DB);
6257c216	222	mv(buf, _PATH_MP_DB);
c557c546	223	(void)sprintf(buf, "%s.tmp", _PATH_SMP_DB);
6257c216 KB	224	mv(buf, _PATH_SMP_DB);
	225	if (makeold) {
	226	(void)sprintf(buf, "%s.orig", pname);
	227	mv(buf, _PATH_PASSWD);
	228	}
	229	/*
	230	* Move the master password LAST -- chpass(1), passwd(1) and vipw(8)
	231	* all use flock(2) on it to block other incarnations of themselves.
	232	* The rename means that everything is unlocked, as the original file
	233	* can no longer be accessed.
	234	*/
	235	mv(pname, _PATH_MASTERPASSWD);
	236	exit(0);
	237	}
	238
	239	scan(fp, pw)
	240	FILE *fp;
	241	struct passwd *pw;
	242	{
	243	static int lcnt;
	244	static char line[LINE_MAX];
	245	char *p;
	246
	247	if (!fgets(line, sizeof(line), fp))
	248	return(0);
	249	++lcnt;
	250	/*
	251	* ``... if I swallow anything evil, put your fingers down my
	252	* throat...''
	253	* -- The Who
	254	*/
	255	if (!(p = index(line, '\n'))) {
	256	(void)fprintf(stderr, "pwd_mkdb: line too long\n");
	257	goto fmt;
	258
	259	}
	260	*p = '\0';
	261	if (!pw_scan(line, pw)) {
	262	(void)fprintf(stderr, "pwd_mkdb: at line #%d.\n", lcnt);
	263	fmt: errno = EFTYPE;
	264	error(pname);
	265	exit(1);
	266	}
	267	}
	268
	269	mv(from, to)
	270	char from, to;
	271	{
	272	int sverrno;
	273	char buf[MAXPATHLEN];
	274
	275	if (rename(from, to)) {
	276	sverrno = errno;
	277	(void)sprintf(buf, "%s to %s", from, to);
	278	errno = sverrno;
	279	error(buf);
	280	}
	281	}
	282
c557c546 KB	283	error(name)
	284	char *name;
	285	{
	286	(void)fprintf(stderr, "pwd_mkdb: %s: %s\n", name, strerror(errno));
	287	cleanup();
	288	exit(1);
	289	}
	290
6257c216 KB	291	cleanup()
	292	{
	293	char buf[MAXPATHLEN];
	294
	295	switch(clean) {
	296	case FILE_ORIG:
	297	(void)sprintf(buf, "%s.orig", pname);
	298	(void)unlink(buf);
	299	/* FALLTHROUGH */
	300	case FILE_SECURE:
	301	(void)sprintf(buf, "%s.tmp", _PATH_SMP_DB);
	302	(void)unlink(buf);
	303	/* FALLTHROUGH */
	304	case FILE_INSECURE:
	305	(void)sprintf(buf, "%s.tmp", _PATH_MP_DB);
	306	(void)unlink(buf);
	307	}
	308	}
	309
6257c216 KB	310	usage()
	311	{
	312	(void)fprintf(stderr, "usage: pwd_mkdb [-p] file\n");
	313	exit(1);
	314	}