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getpwent.c revision 1.20
      1  1.20     lukem /*	$NetBSD: getpwent.c,v 1.20 1997/05/22 03:24:38 lukem Exp $	*/
      2  1.12       cgd 
      3   1.1       cgd /*
      4  1.12       cgd  * Copyright (c) 1988, 1993
      5  1.12       cgd  *	The Regents of the University of California.  All rights reserved.
      6  1.14      phil  * Portions Copyright (c) 1994, 1995, Jason Downs.  All rights reserved.
      7   1.1       cgd  *
      8   1.1       cgd  * Redistribution and use in source and binary forms, with or without
      9   1.1       cgd  * modification, are permitted provided that the following conditions
     10   1.1       cgd  * are met:
     11   1.1       cgd  * 1. Redistributions of source code must retain the above copyright
     12   1.1       cgd  *    notice, this list of conditions and the following disclaimer.
     13   1.1       cgd  * 2. Redistributions in binary form must reproduce the above copyright
     14   1.1       cgd  *    notice, this list of conditions and the following disclaimer in the
     15   1.1       cgd  *    documentation and/or other materials provided with the distribution.
     16   1.1       cgd  * 3. All advertising materials mentioning features or use of this software
     17   1.1       cgd  *    must display the following acknowledgement:
     18   1.1       cgd  *	This product includes software developed by the University of
     19   1.1       cgd  *	California, Berkeley and its contributors.
     20   1.1       cgd  * 4. Neither the name of the University nor the names of its contributors
     21   1.1       cgd  *    may be used to endorse or promote products derived from this software
     22   1.1       cgd  *    without specific prior written permission.
     23   1.1       cgd  *
     24   1.1       cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25   1.1       cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26   1.1       cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27   1.1       cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28   1.1       cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29   1.1       cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30   1.1       cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31   1.1       cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32   1.1       cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33   1.1       cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34   1.1       cgd  * SUCH DAMAGE.
     35   1.1       cgd  */
     36   1.1       cgd 
     37   1.1       cgd #if defined(LIBC_SCCS) && !defined(lint)
     38  1.12       cgd #if 0
     39  1.12       cgd static char sccsid[] = "@(#)getpwent.c	8.1 (Berkeley) 6/4/93";
     40  1.12       cgd #else
     41  1.20     lukem static char rcsid[] = "$NetBSD: getpwent.c,v 1.20 1997/05/22 03:24:38 lukem Exp $";
     42  1.12       cgd #endif
     43   1.1       cgd #endif /* LIBC_SCCS and not lint */
     44   1.1       cgd 
     45   1.1       cgd #include <sys/param.h>
     46   1.1       cgd #include <fcntl.h>
     47   1.1       cgd #include <db.h>
     48   1.1       cgd #include <syslog.h>
     49   1.1       cgd #include <pwd.h>
     50   1.1       cgd #include <utmp.h>
     51   1.1       cgd #include <errno.h>
     52   1.1       cgd #include <unistd.h>
     53   1.1       cgd #include <stdlib.h>
     54   1.1       cgd #include <string.h>
     55   1.1       cgd #include <limits.h>
     56  1.14      phil #include <netgroup.h>
     57   1.4   deraadt #ifdef YP
     58  1.14      phil #include <machine/param.h>
     59   1.4   deraadt #include <stdio.h>
     60   1.4   deraadt #include <rpc/rpc.h>
     61   1.4   deraadt #include <rpcsvc/yp_prot.h>
     62   1.4   deraadt #include <rpcsvc/ypclnt.h>
     63   1.4   deraadt #endif
     64   1.1       cgd 
     65   1.1       cgd static struct passwd _pw_passwd;	/* password structure */
     66   1.1       cgd static DB *_pw_db;			/* password database */
     67   1.1       cgd static int _pw_keynum;			/* key counter */
     68   1.1       cgd static int _pw_stayopen;		/* keep fd's open */
     69  1.14      phil static int _pw_flags;			/* password flags */
     70  1.14      phil static int __hashpw __P((DBT *));
     71  1.14      phil static int __initdb __P((void));
     72  1.14      phil 
     73  1.14      phil const char __yp_token[] = "__YP!";	/* Let pwd_mkdb pull this in. */
     74   1.1       cgd 
     75   1.4   deraadt #ifdef YP
     76  1.14      phil enum _ypmode { YPMODE_NONE, YPMODE_FULL, YPMODE_USER, YPMODE_NETGRP };
     77  1.14      phil static enum _ypmode __ypmode;
     78  1.14      phil 
     79   1.4   deraadt static char     *__ypcurrent, *__ypdomain;
     80  1.14      phil static int      __ypcurrentlen;
     81  1.14      phil static struct passwd *__ypproto = (struct passwd *)NULL;
     82  1.14      phil static int	__ypflags;
     83   1.4   deraadt static char	line[1024];
     84  1.14      phil static long	prbuf[1024 / sizeof(long)];
     85  1.14      phil static DB *__ypexclude = (DB *)NULL;
     86  1.14      phil 
     87  1.14      phil static int __has_yppw __P((void));
     88  1.14      phil static int __ypexclude_add __P((const char *));
     89  1.14      phil static int __ypexclude_is __P((const char *));
     90  1.14      phil static void __ypproto_set __P((void));
     91  1.14      phil 
     92  1.14      phil static int
     93  1.14      phil __ypexclude_add(name)
     94  1.14      phil const char *name;
     95  1.14      phil {
     96  1.14      phil 	DBT key, data;
     97  1.14      phil 
     98  1.14      phil 	/* initialize the exclusion table if needed. */
     99  1.14      phil 	if(__ypexclude == (DB *)NULL) {
    100  1.14      phil 		__ypexclude = dbopen(NULL, O_RDWR, 600, DB_HASH, NULL);
    101  1.14      phil 		if(__ypexclude == (DB *)NULL)
    102  1.14      phil 			return(1);
    103  1.14      phil 	}
    104  1.14      phil 
    105  1.14      phil 	/* set up the key */
    106  1.14      phil 	key.data = (char *)name;
    107  1.14      phil 	key.size = strlen(name);
    108  1.14      phil 
    109  1.14      phil 	/* data is nothing. */
    110  1.14      phil 	data.data = NULL;
    111  1.14      phil 	data.size = 0;
    112  1.14      phil 
    113  1.14      phil 	/* store it */
    114  1.14      phil 	if((__ypexclude->put)(__ypexclude, &key, &data, 0) == -1)
    115  1.14      phil 		return(1);
    116  1.14      phil 
    117  1.14      phil 	return(0);
    118  1.14      phil }
    119  1.14      phil 
    120  1.14      phil static int
    121  1.14      phil __ypexclude_is(name)
    122  1.14      phil const char *name;
    123  1.14      phil {
    124  1.14      phil 	DBT key, data;
    125  1.14      phil 
    126  1.14      phil 	if(__ypexclude == (DB *)NULL)
    127  1.14      phil 		return(0);	/* nothing excluded */
    128  1.14      phil 
    129  1.14      phil 	/* set up the key */
    130  1.14      phil 	key.data = (char *)name;
    131  1.14      phil 	key.size = strlen(name);
    132  1.14      phil 
    133  1.14      phil 	if((__ypexclude->get)(__ypexclude, &key, &data, 0) == 0)
    134  1.14      phil 		return(1);	/* excluded */
    135  1.14      phil 
    136  1.14      phil 	return(0);
    137  1.14      phil }
    138  1.14      phil 
    139  1.14      phil static void
    140  1.14      phil __ypproto_set()
    141  1.14      phil {
    142  1.17     lukem 	char *ptr;
    143  1.17     lukem 	struct passwd *pw = &_pw_passwd;
    144  1.14      phil 
    145  1.14      phil 	/* make this the new prototype */
    146  1.14      phil 	ptr = (char *)prbuf;
    147  1.14      phil 
    148  1.14      phil 	/* first allocate the struct. */
    149  1.14      phil 	__ypproto = (struct passwd *)ptr;
    150  1.14      phil 	ptr += sizeof(struct passwd);
    151  1.14      phil 
    152  1.14      phil 	/* name */
    153  1.14      phil 	if(pw->pw_name && (pw->pw_name)[0]) {
    154  1.14      phil 		ptr = (char *)ALIGN(ptr);
    155  1.14      phil 		bcopy(pw->pw_name, ptr, strlen(pw->pw_name) + 1);
    156  1.14      phil 		__ypproto->pw_name = ptr;
    157  1.14      phil 		ptr += (strlen(pw->pw_name) + 1);
    158  1.14      phil 	} else
    159  1.14      phil 		__ypproto->pw_name = (char *)NULL;
    160  1.14      phil 
    161  1.14      phil 	/* password */
    162  1.14      phil 	if(pw->pw_passwd && (pw->pw_passwd)[0]) {
    163  1.14      phil 		ptr = (char *)ALIGN(ptr);
    164  1.14      phil 		bcopy(pw->pw_passwd, ptr, strlen(pw->pw_passwd) + 1);
    165  1.14      phil 		__ypproto->pw_passwd = ptr;
    166  1.14      phil 		ptr += (strlen(pw->pw_passwd) + 1);
    167  1.14      phil 	} else
    168  1.14      phil 		__ypproto->pw_passwd = (char *)NULL;
    169  1.14      phil 
    170  1.14      phil 	/* uid */
    171  1.14      phil 	__ypproto->pw_uid = pw->pw_uid;
    172  1.14      phil 
    173  1.14      phil 	/* gid */
    174  1.14      phil 	__ypproto->pw_gid = pw->pw_gid;
    175  1.14      phil 
    176  1.14      phil 	/* change (ignored anyway) */
    177  1.14      phil 	__ypproto->pw_change = pw->pw_change;
    178  1.14      phil 
    179  1.14      phil 	/* class (ignored anyway) */
    180  1.14      phil 	__ypproto->pw_class = "";
    181  1.14      phil 
    182  1.14      phil 	/* gecos */
    183  1.14      phil 	if(pw->pw_gecos && (pw->pw_gecos)[0]) {
    184  1.14      phil 		ptr = (char *)ALIGN(ptr);
    185  1.14      phil 		bcopy(pw->pw_gecos, ptr, strlen(pw->pw_gecos) + 1);
    186  1.14      phil 		__ypproto->pw_gecos = ptr;
    187  1.14      phil 		ptr += (strlen(pw->pw_gecos) + 1);
    188  1.14      phil 	} else
    189  1.14      phil 		__ypproto->pw_gecos = (char *)NULL;
    190  1.14      phil 
    191  1.14      phil 	/* dir */
    192  1.14      phil 	if(pw->pw_dir && (pw->pw_dir)[0]) {
    193  1.14      phil 		ptr = (char *)ALIGN(ptr);
    194  1.14      phil 		bcopy(pw->pw_dir, ptr, strlen(pw->pw_dir) + 1);
    195  1.14      phil 		__ypproto->pw_dir = ptr;
    196  1.14      phil 		ptr += (strlen(pw->pw_dir) + 1);
    197  1.14      phil 	} else
    198  1.14      phil 		__ypproto->pw_dir = (char *)NULL;
    199  1.14      phil 
    200  1.14      phil 	/* shell */
    201  1.14      phil 	if(pw->pw_shell && (pw->pw_shell)[0]) {
    202  1.14      phil 		ptr = (char *)ALIGN(ptr);
    203  1.14      phil 		bcopy(pw->pw_shell, ptr, strlen(pw->pw_shell) + 1);
    204  1.14      phil 		__ypproto->pw_shell = ptr;
    205  1.14      phil 		ptr += (strlen(pw->pw_shell) + 1);
    206  1.14      phil 	} else
    207  1.14      phil 		__ypproto->pw_shell = (char *)NULL;
    208  1.14      phil 
    209  1.14      phil 	/* expire (ignored anyway) */
    210  1.14      phil 	__ypproto->pw_expire = pw->pw_expire;
    211  1.14      phil 
    212  1.14      phil 	/* flags */
    213  1.14      phil 	__ypflags = _pw_flags;
    214  1.14      phil }
    215   1.4   deraadt 
    216   1.5   deraadt static int
    217   1.5   deraadt __ypparse(pw, s)
    218   1.4   deraadt struct passwd *pw;
    219   1.4   deraadt char *s;
    220   1.4   deraadt {
    221  1.19     lukem 	char *bp, *cp, *ep;
    222  1.19     lukem 	unsigned long id;
    223   1.4   deraadt 
    224  1.14      phil 	/* since this is currently using strsep(), parse it first */
    225   1.4   deraadt 	bp = s;
    226   1.4   deraadt 	pw->pw_name = strsep(&bp, ":\n");
    227   1.4   deraadt 	pw->pw_passwd = strsep(&bp, ":\n");
    228   1.4   deraadt 	if (!(cp = strsep(&bp, ":\n")))
    229   1.4   deraadt 		return 1;
    230  1.19     lukem 	id = strtoul(cp, &ep, 10);
    231  1.19     lukem 	if (id > UID_MAX || *ep == '\0')
    232  1.19     lukem 		return 1;
    233  1.19     lukem 	pw->pw_uid = (uid_t)id;
    234   1.4   deraadt 	if (!(cp = strsep(&bp, ":\n")))
    235  1.13   mycroft 		return 1;
    236  1.19     lukem 	id = strtoul(cp, &ep, 10);
    237  1.19     lukem 	if (id > GID_MAX || *ep == '\0')
    238  1.19     lukem 		return 1;
    239  1.19     lukem 	pw->pw_gid = (gid_t)id;
    240   1.4   deraadt 	pw->pw_change = 0;
    241   1.4   deraadt 	pw->pw_class = "";
    242   1.4   deraadt 	pw->pw_gecos = strsep(&bp, ":\n");
    243   1.4   deraadt 	pw->pw_dir = strsep(&bp, ":\n");
    244   1.4   deraadt 	pw->pw_shell = strsep(&bp, ":\n");
    245   1.4   deraadt 	pw->pw_expire = 0;
    246  1.14      phil 
    247  1.14      phil 	/* now let the prototype override, if set. */
    248  1.14      phil 	if(__ypproto != (struct passwd *)NULL) {
    249  1.14      phil #ifdef YP_OVERRIDE_PASSWD
    250  1.14      phil 		if(__ypproto->pw_passwd != (char *)NULL)
    251  1.14      phil 			pw->pw_passwd = __ypproto->pw_passwd;
    252  1.14      phil #endif
    253  1.14      phil 		if(!(__ypflags & _PASSWORD_NOUID))
    254  1.14      phil 			pw->pw_uid = __ypproto->pw_uid;
    255  1.14      phil 		if(!(__ypflags & _PASSWORD_NOGID))
    256  1.14      phil 			pw->pw_gid = __ypproto->pw_gid;
    257  1.14      phil 		if(__ypproto->pw_gecos != (char *)NULL)
    258  1.14      phil 			pw->pw_gecos = __ypproto->pw_gecos;
    259  1.14      phil 		if(__ypproto->pw_dir != (char *)NULL)
    260  1.14      phil 			pw->pw_dir = __ypproto->pw_dir;
    261  1.14      phil 		if(__ypproto->pw_shell != (char *)NULL)
    262  1.14      phil 			pw->pw_shell = __ypproto->pw_shell;
    263  1.14      phil 	}
    264   1.4   deraadt 	return 0;
    265   1.4   deraadt }
    266   1.4   deraadt #endif
    267   1.4   deraadt 
    268   1.1       cgd struct passwd *
    269   1.1       cgd getpwent()
    270   1.1       cgd {
    271   1.1       cgd 	DBT key;
    272   1.1       cgd 	char bf[sizeof(_pw_keynum) + 1];
    273   1.4   deraadt #ifdef YP
    274  1.13   mycroft 	char *cp;
    275  1.14      phil 	static char *name = (char *)NULL;
    276  1.14      phil 	const char *user, *host, *dom;
    277  1.14      phil 	int has_yppw;
    278   1.4   deraadt #endif
    279   1.1       cgd 
    280   1.1       cgd 	if (!_pw_db && !__initdb())
    281   1.1       cgd 		return((struct passwd *)NULL);
    282   1.1       cgd 
    283   1.4   deraadt #ifdef YP
    284  1.14      phil 	has_yppw = __has_yppw();
    285  1.14      phil 
    286   1.4   deraadt again:
    287  1.14      phil 	if(has_yppw && (__ypmode != YPMODE_NONE)) {
    288   1.4   deraadt 		char *key, *data;
    289   1.4   deraadt 		int keylen, datalen;
    290  1.14      phil 		int r, s;
    291   1.4   deraadt 
    292   1.4   deraadt 		if(!__ypdomain) {
    293   1.4   deraadt 			if( _yp_check(&__ypdomain) == 0) {
    294  1.14      phil 				__ypmode = YPMODE_NONE;
    295   1.4   deraadt 				goto again;
    296   1.4   deraadt 			}
    297   1.4   deraadt 		}
    298  1.14      phil 		switch(__ypmode) {
    299  1.14      phil 		case YPMODE_FULL:
    300  1.17     lukem 			data = NULL;
    301  1.14      phil 			if(__ypcurrent) {
    302  1.18     lukem 				key = NULL;
    303  1.14      phil 				r = yp_next(__ypdomain, "passwd.byname",
    304  1.14      phil 					__ypcurrent, __ypcurrentlen,
    305  1.14      phil 					&key, &keylen, &data, &datalen);
    306  1.14      phil 				free(__ypcurrent);
    307  1.18     lukem 				if(r != 0) {
    308  1.14      phil 					__ypcurrent = NULL;
    309  1.18     lukem 					if (key)
    310  1.18     lukem 						free(key);
    311  1.18     lukem 				}
    312  1.17     lukem 				else {
    313  1.17     lukem 					__ypcurrent = key;
    314  1.17     lukem 					__ypcurrentlen = keylen;
    315  1.14      phil 				}
    316  1.14      phil 			} else {
    317  1.14      phil 				r = yp_first(__ypdomain, "passwd.byname",
    318  1.14      phil 					&__ypcurrent, &__ypcurrentlen,
    319  1.14      phil 					&data, &datalen);
    320  1.17     lukem 			}
    321  1.17     lukem 			if(r != 0) {
    322  1.17     lukem 				__ypmode = YPMODE_NONE;
    323  1.17     lukem 				if(data)
    324  1.17     lukem 					free(data);
    325   1.4   deraadt 				data = NULL;
    326  1.17     lukem 				goto again;
    327  1.14      phil 			}
    328  1.17     lukem 			bcopy(data, line, datalen);
    329  1.17     lukem 			free(data);
    330  1.17     lukem 			data = NULL;
    331  1.14      phil 			break;
    332  1.14      phil 		case YPMODE_NETGRP:
    333  1.14      phil 			s = getnetgrent(&host, &user, &dom);
    334  1.14      phil 			if(s == 0) {	/* end of group */
    335  1.14      phil 				endnetgrent();
    336  1.14      phil 				__ypmode = YPMODE_NONE;
    337  1.14      phil 				goto again;
    338  1.14      phil 			}
    339  1.14      phil 			if(user && *user) {
    340  1.17     lukem 				data = NULL;
    341  1.14      phil 				r = yp_match(__ypdomain, "passwd.byname",
    342  1.14      phil 					user, strlen(user),
    343  1.14      phil 					&data, &datalen);
    344  1.14      phil 			} else
    345  1.14      phil 				goto again;
    346  1.14      phil 			if(r != 0) {
    347  1.14      phil 				/*
    348  1.14      phil 				 * if the netgroup is invalid, keep looking
    349  1.14      phil 				 * as there may be valid users later on.
    350  1.14      phil 				 */
    351  1.14      phil 				if(data)
    352  1.14      phil 					free(data);
    353   1.4   deraadt 				goto again;
    354   1.4   deraadt 			}
    355   1.4   deraadt 			bcopy(data, line, datalen);
    356   1.4   deraadt 			free(data);
    357  1.17     lukem 			data = NULL;
    358  1.14      phil 			break;
    359  1.14      phil 		case YPMODE_USER:
    360  1.14      phil 			if(name != (char *)NULL) {
    361  1.17     lukem 				data = NULL;
    362  1.14      phil 				r = yp_match(__ypdomain, "passwd.byname",
    363  1.14      phil 					name, strlen(name),
    364  1.14      phil 					&data, &datalen);
    365  1.14      phil 				__ypmode = YPMODE_NONE;
    366  1.14      phil 				free(name);
    367  1.17     lukem 				name = NULL;
    368  1.14      phil 				if(r != 0) {
    369  1.14      phil 					if(data)
    370  1.14      phil 						free(data);
    371  1.14      phil 					goto again;
    372  1.14      phil 				}
    373  1.14      phil 				bcopy(data, line, datalen);
    374   1.4   deraadt 				free(data);
    375  1.14      phil 				data = (char *)NULL;
    376  1.14      phil 			} else {		/* XXX */
    377  1.14      phil 				__ypmode = YPMODE_NONE;
    378   1.4   deraadt 				goto again;
    379   1.4   deraadt 			}
    380  1.14      phil 			break;
    381   1.4   deraadt 		}
    382  1.14      phil 
    383   1.4   deraadt 		line[datalen] = '\0';
    384  1.13   mycroft 		if (__ypparse(&_pw_passwd, line))
    385  1.13   mycroft 			goto again;
    386  1.13   mycroft 		return &_pw_passwd;
    387   1.4   deraadt 	}
    388   1.4   deraadt #endif
    389   1.4   deraadt 
    390   1.1       cgd 	++_pw_keynum;
    391   1.1       cgd 	bf[0] = _PW_KEYBYNUM;
    392   1.1       cgd 	bcopy((char *)&_pw_keynum, bf + 1, sizeof(_pw_keynum));
    393   1.1       cgd 	key.data = (u_char *)bf;
    394   1.1       cgd 	key.size = sizeof(_pw_keynum) + 1;
    395   1.4   deraadt 	if(__hashpw(&key)) {
    396   1.4   deraadt #ifdef YP
    397  1.14      phil 		/* if we don't have YP at all, don't bother. */
    398  1.14      phil 		if(has_yppw) {
    399  1.14      phil 			if(_pw_passwd.pw_name[0] == '+') {
    400  1.14      phil 				/* set the mode */
    401  1.14      phil 				switch(_pw_passwd.pw_name[1]) {
    402  1.14      phil 				case '\0':
    403  1.14      phil 					__ypmode = YPMODE_FULL;
    404  1.14      phil 					break;
    405  1.14      phil 				case '@':
    406  1.14      phil 					__ypmode = YPMODE_NETGRP;
    407  1.14      phil 					setnetgrent(_pw_passwd.pw_name + 2);
    408  1.14      phil 					break;
    409  1.14      phil 				default:
    410  1.14      phil 					__ypmode = YPMODE_USER;
    411  1.14      phil 					name = strdup(_pw_passwd.pw_name + 1);
    412  1.14      phil 					break;
    413  1.14      phil 				}
    414  1.14      phil 
    415  1.14      phil 				/* save the prototype */
    416  1.14      phil 				__ypproto_set();
    417  1.14      phil 				goto again;
    418  1.14      phil 			} else if(_pw_passwd.pw_name[0] == '-') {
    419  1.14      phil 				/* an attempted exclusion */
    420  1.14      phil 				switch(_pw_passwd.pw_name[1]) {
    421  1.14      phil 				case '\0':
    422  1.14      phil 					break;
    423  1.14      phil 				case '@':
    424  1.14      phil 					setnetgrent(_pw_passwd.pw_name + 2);
    425  1.14      phil 					while(getnetgrent(&host, &user, &dom)) {
    426  1.14      phil 						if(user && *user)
    427  1.14      phil 							__ypexclude_add(user);
    428  1.14      phil 					}
    429  1.14      phil 					endnetgrent();
    430  1.14      phil 					break;
    431  1.14      phil 				default:
    432  1.14      phil 					__ypexclude_add(_pw_passwd.pw_name + 1);
    433  1.14      phil 					break;
    434  1.14      phil 				}
    435  1.14      phil 				goto again;
    436  1.14      phil 			}
    437   1.4   deraadt 		}
    438   1.4   deraadt #endif
    439   1.4   deraadt 		return &_pw_passwd;
    440   1.4   deraadt 	}
    441   1.4   deraadt 	return (struct passwd *)NULL;
    442   1.1       cgd }
    443   1.1       cgd 
    444  1.14      phil #ifdef YP
    445  1.14      phil 
    446  1.14      phil /*
    447  1.14      phil  * See if the YP token is in the database.  Only works if pwd_mkdb knows
    448  1.14      phil  * about the token.
    449  1.14      phil  */
    450  1.14      phil static int
    451  1.14      phil __has_yppw()
    452  1.14      phil {
    453  1.14      phil 	DBT key, data;
    454  1.14      phil 	DBT pkey, pdata;
    455  1.14      phil 	int len;
    456  1.15  sommerfe 	char bf[MAXLOGNAME];
    457  1.14      phil 
    458  1.14      phil 	key.data = (u_char *)__yp_token;
    459  1.14      phil 	key.size = strlen(__yp_token);
    460  1.14      phil 
    461  1.14      phil 	/* Pre-token database support. */
    462  1.14      phil 	bf[0] = _PW_KEYBYNAME;
    463  1.15  sommerfe 	bf[1] = '+';
    464  1.14      phil 	pkey.data = (u_char *)bf;
    465  1.15  sommerfe 	pkey.size = 2;
    466  1.14      phil 
    467  1.14      phil 	if ((_pw_db->get)(_pw_db, &key, &data, 0)
    468  1.14      phil 	    && (_pw_db->get)(_pw_db, &pkey, &pdata, 0))
    469  1.14      phil 		return(0);	/* No YP. */
    470  1.14      phil 	return(1);
    471  1.14      phil }
    472  1.14      phil #endif
    473  1.14      phil 
    474   1.1       cgd struct passwd *
    475   1.1       cgd getpwnam(name)
    476   1.1       cgd 	const char *name;
    477   1.1       cgd {
    478   1.1       cgd 	DBT key;
    479  1.10   deraadt 	int len, rval;
    480  1.15  sommerfe 	char bf[MAXLOGNAME + 1];
    481  1.10   deraadt 
    482  1.10   deraadt 	if (!_pw_db && !__initdb())
    483  1.10   deraadt 		return((struct passwd *)NULL);
    484   1.4   deraadt 
    485   1.4   deraadt #ifdef YP
    486  1.10   deraadt 	/*
    487  1.14      phil 	 * If YP is active, we must sequence through the passwd file
    488  1.14      phil 	 * in sequence.
    489  1.10   deraadt 	 */
    490  1.14      phil 	if (__has_yppw()) {
    491  1.10   deraadt 		int r;
    492  1.14      phil 		int s = -1;
    493  1.14      phil 		const char *host, *user, *dom;
    494   1.4   deraadt 
    495  1.10   deraadt 		for(_pw_keynum=1; _pw_keynum; _pw_keynum++) {
    496  1.10   deraadt 			bf[0] = _PW_KEYBYNUM;
    497  1.10   deraadt 			bcopy((char *)&_pw_keynum, bf + 1, sizeof(_pw_keynum));
    498  1.10   deraadt 			key.data = (u_char *)bf;
    499  1.10   deraadt 			key.size = sizeof(_pw_keynum) + 1;
    500  1.10   deraadt 			if(__hashpw(&key) == 0)
    501  1.10   deraadt 				break;
    502  1.14      phil 			switch(_pw_passwd.pw_name[0]) {
    503  1.14      phil 			case '+':
    504  1.10   deraadt 				if(!__ypdomain) {
    505  1.10   deraadt 					if(_yp_check(&__ypdomain) == 0) {
    506  1.10   deraadt 						continue;
    507  1.10   deraadt 					}
    508  1.10   deraadt 				}
    509  1.14      phil 				/* save the prototype */
    510  1.14      phil 				__ypproto_set();
    511  1.14      phil 
    512  1.14      phil 				switch(_pw_passwd.pw_name[1]) {
    513  1.14      phil 				case '\0':
    514  1.14      phil 					if(__ypcurrent) {
    515  1.14      phil 						free(__ypcurrent);
    516  1.14      phil 						__ypcurrent = NULL;
    517  1.14      phil 					}
    518  1.14      phil 					r = yp_match(__ypdomain,
    519  1.14      phil 						"passwd.byname",
    520  1.14      phil 						name, strlen(name),
    521  1.14      phil 						&__ypcurrent, &__ypcurrentlen);
    522  1.14      phil 					if(r != 0) {
    523  1.14      phil 						if(__ypcurrent)
    524  1.14      phil 							free(__ypcurrent);
    525  1.14      phil 						__ypcurrent = NULL;
    526  1.14      phil 						continue;
    527  1.14      phil 					}
    528  1.14      phil 					break;
    529  1.14      phil 				case '@':
    530  1.14      phil pwnam_netgrp:
    531  1.14      phil 					if(__ypcurrent) {
    532  1.14      phil 						free(__ypcurrent);
    533  1.14      phil 						__ypcurrent = NULL;
    534  1.14      phil 					}
    535  1.14      phil 					if(s == -1)	/* first time */
    536  1.14      phil 						setnetgrent(_pw_passwd.pw_name + 2);
    537  1.14      phil 					s = getnetgrent(&host, &user, &dom);
    538  1.14      phil 					if(s == 0) {	/* end of group */
    539  1.14      phil 						endnetgrent();
    540  1.14      phil 						s = -1;
    541  1.14      phil 						continue;
    542  1.14      phil 					} else {
    543  1.14      phil 						if(user && *user) {
    544  1.14      phil 							r = yp_match(__ypdomain,
    545  1.14      phil 							    "passwd.byname",
    546  1.14      phil 							    user, strlen(user),
    547  1.14      phil 							    &__ypcurrent,
    548  1.14      phil 							    &__ypcurrentlen);
    549  1.14      phil 						} else
    550  1.14      phil 							goto pwnam_netgrp;
    551  1.14      phil 						if(r != 0) {
    552  1.14      phil 							if(__ypcurrent)
    553  1.14      phil 							    free(__ypcurrent);
    554  1.14      phil 							__ypcurrent = NULL;
    555  1.14      phil 							/*
    556  1.14      phil 							 * just because this
    557  1.14      phil 							 * user is bad, doesn't
    558  1.14      phil 							 * mean they all are.
    559  1.14      phil 							 */
    560  1.14      phil 							goto pwnam_netgrp;
    561  1.14      phil 						}
    562  1.14      phil 					}
    563  1.10   deraadt 					break;
    564  1.10   deraadt 				default:
    565  1.14      phil 					if(__ypcurrent) {
    566  1.14      phil 						free(__ypcurrent);
    567  1.14      phil 						__ypcurrent = NULL;
    568  1.14      phil 					}
    569  1.14      phil 					user = _pw_passwd.pw_name + 1;
    570  1.14      phil 					r = yp_match(__ypdomain,
    571  1.14      phil 						"passwd.byname",
    572  1.14      phil 						user, strlen(user),
    573  1.14      phil 						&__ypcurrent,
    574  1.14      phil 						&__ypcurrentlen);
    575  1.14      phil 					if(r != 0) {
    576  1.14      phil 						if(__ypcurrent)
    577  1.14      phil 							free(__ypcurrent);
    578  1.14      phil 						__ypcurrent = NULL;
    579  1.14      phil 						continue;
    580  1.14      phil 					}
    581  1.14      phil 					break;
    582   1.4   deraadt 				}
    583  1.10   deraadt 				bcopy(__ypcurrent, line, __ypcurrentlen);
    584  1.10   deraadt 				line[__ypcurrentlen] = '\0';
    585  1.14      phil 				if(__ypparse(&_pw_passwd, line)
    586  1.14      phil 				   || __ypexclude_is(_pw_passwd.pw_name)) {
    587  1.14      phil 					if(s == 1)	/* inside netgrp */
    588  1.14      phil 						goto pwnam_netgrp;
    589  1.10   deraadt 					continue;
    590  1.14      phil 				}
    591  1.14      phil 				break;
    592  1.14      phil 			case '-':
    593  1.14      phil 				/* attempted exclusion */
    594  1.14      phil 				switch(_pw_passwd.pw_name[1]) {
    595  1.14      phil 				case '\0':
    596  1.14      phil 					break;
    597  1.14      phil 				case '@':
    598  1.14      phil 					setnetgrent(_pw_passwd.pw_name + 2);
    599  1.14      phil 					while(getnetgrent(&host, &user, &dom)) {
    600  1.14      phil 						if(user && *user)
    601  1.14      phil 							__ypexclude_add(user);
    602  1.14      phil 					}
    603  1.14      phil 					endnetgrent();
    604  1.14      phil 					break;
    605  1.14      phil 				default:
    606  1.14      phil 					__ypexclude_add(_pw_passwd.pw_name + 1);
    607  1.14      phil 					break;
    608  1.14      phil 				}
    609  1.14      phil 				break;
    610  1.14      phil 
    611  1.14      phil 				continue;
    612   1.4   deraadt 			}
    613  1.14      phil 			if(strcmp(_pw_passwd.pw_name, name) == 0) {
    614  1.10   deraadt 				if (!_pw_stayopen) {
    615  1.10   deraadt 					(void)(_pw_db->close)(_pw_db);
    616  1.10   deraadt 					_pw_db = (DB *)NULL;
    617  1.10   deraadt 				}
    618  1.14      phil 				if(__ypexclude != (DB *)NULL) {
    619  1.14      phil 					(void)(__ypexclude->close)(__ypexclude);
    620  1.14      phil 					__ypexclude = (DB *)NULL;
    621  1.14      phil 				}
    622  1.14      phil 				__ypproto = (struct passwd *)NULL;
    623  1.10   deraadt 				return &_pw_passwd;
    624   1.4   deraadt 			}
    625  1.14      phil 			if(s == 1)	/* inside netgrp */
    626  1.14      phil 				goto pwnam_netgrp;
    627  1.10   deraadt 			continue;
    628   1.4   deraadt 		}
    629  1.10   deraadt 		if (!_pw_stayopen) {
    630  1.10   deraadt 			(void)(_pw_db->close)(_pw_db);
    631  1.10   deraadt 			_pw_db = (DB *)NULL;
    632   1.4   deraadt 		}
    633  1.14      phil 		if(__ypexclude != (DB *)NULL) {
    634  1.14      phil 			(void)(__ypexclude->close)(__ypexclude);
    635  1.14      phil 			__ypexclude = (DB *)NULL;
    636  1.14      phil 		}
    637  1.14      phil 		__ypproto = (struct passwd *)NULL;
    638  1.10   deraadt 		return (struct passwd *)NULL;
    639   1.4   deraadt 	}
    640  1.10   deraadt #endif /* YP */
    641   1.1       cgd 
    642   1.1       cgd 	bf[0] = _PW_KEYBYNAME;
    643   1.1       cgd 	len = strlen(name);
    644  1.15  sommerfe 	len = MIN(len, MAXLOGNAME);
    645  1.15  sommerfe 	bcopy(name, bf + 1, len);
    646   1.1       cgd 	key.data = (u_char *)bf;
    647   1.1       cgd 	key.size = len + 1;
    648   1.1       cgd 	rval = __hashpw(&key);
    649   1.1       cgd 
    650   1.1       cgd 	if (!_pw_stayopen) {
    651   1.1       cgd 		(void)(_pw_db->close)(_pw_db);
    652   1.1       cgd 		_pw_db = (DB *)NULL;
    653   1.1       cgd 	}
    654   1.1       cgd 	return(rval ? &_pw_passwd : (struct passwd *)NULL);
    655   1.1       cgd }
    656   1.1       cgd 
    657   1.1       cgd struct passwd *
    658   1.1       cgd #ifdef __STDC__
    659   1.1       cgd getpwuid(uid_t uid)
    660   1.1       cgd #else
    661   1.1       cgd getpwuid(uid)
    662  1.20     lukem 	uid_t uid;
    663   1.1       cgd #endif
    664   1.1       cgd {
    665   1.1       cgd 	DBT key;
    666  1.10   deraadt 	char bf[sizeof(_pw_keynum) + 1];
    667  1.19     lukem 	uid_t keyuid;
    668  1.19     lukem 	int rval;
    669  1.10   deraadt 
    670  1.10   deraadt 	if (!_pw_db && !__initdb())
    671  1.10   deraadt 		return((struct passwd *)NULL);
    672   1.4   deraadt 
    673   1.4   deraadt #ifdef YP
    674  1.10   deraadt 	/*
    675  1.14      phil 	 * If YP is active, we must sequence through the passwd file
    676  1.14      phil 	 * in sequence.
    677  1.10   deraadt 	 */
    678  1.14      phil 	if (__has_yppw()) {
    679  1.10   deraadt 		char uidbuf[20];
    680  1.10   deraadt 		int r;
    681  1.14      phil 		int s = -1;
    682  1.14      phil 		const char *host, *user, *dom;
    683   1.4   deraadt 
    684  1.19     lukem 		snprintf(uidbuf, sizeof(uidbuf), "%u", uid);
    685  1.10   deraadt 		for(_pw_keynum=1; _pw_keynum; _pw_keynum++) {
    686  1.10   deraadt 			bf[0] = _PW_KEYBYNUM;
    687  1.10   deraadt 			bcopy((char *)&_pw_keynum, bf + 1, sizeof(_pw_keynum));
    688  1.10   deraadt 			key.data = (u_char *)bf;
    689  1.10   deraadt 			key.size = sizeof(_pw_keynum) + 1;
    690  1.10   deraadt 			if(__hashpw(&key) == 0)
    691  1.10   deraadt 				break;
    692  1.14      phil 			switch(_pw_passwd.pw_name[0]) {
    693  1.14      phil 			case '+':
    694  1.10   deraadt 				if(!__ypdomain) {
    695  1.10   deraadt 					if(_yp_check(&__ypdomain) == 0) {
    696  1.10   deraadt 						continue;
    697  1.10   deraadt 					}
    698  1.10   deraadt 				}
    699  1.14      phil 				/* save the prototype */
    700  1.14      phil 				__ypproto_set();
    701  1.14      phil 
    702  1.14      phil 				switch(_pw_passwd.pw_name[1]) {
    703  1.14      phil 				case '\0':
    704  1.14      phil 					if(__ypcurrent) {
    705  1.14      phil 						free(__ypcurrent);
    706  1.14      phil 						__ypcurrent = NULL;
    707  1.14      phil 					}
    708  1.14      phil 					r = yp_match(__ypdomain, "passwd.byuid",
    709  1.14      phil 						uidbuf, strlen(uidbuf),
    710  1.14      phil 						&__ypcurrent, &__ypcurrentlen);
    711  1.14      phil 					if(r != 0) {
    712  1.14      phil 						if(__ypcurrent)
    713  1.14      phil 							free(__ypcurrent);
    714  1.14      phil 						__ypcurrent = NULL;
    715  1.14      phil 						continue;
    716  1.14      phil 					}
    717  1.14      phil 					break;
    718  1.14      phil 				case '@':
    719  1.14      phil pwuid_netgrp:
    720  1.14      phil 					if(__ypcurrent) {
    721  1.14      phil 						free(__ypcurrent);
    722  1.14      phil 						__ypcurrent = NULL;
    723  1.14      phil 					}
    724  1.14      phil 					if(s == -1)	/* first time */
    725  1.14      phil 						setnetgrent(_pw_passwd.pw_name + 2);
    726  1.14      phil 					s = getnetgrent(&host, &user, &dom);
    727  1.14      phil 					if(s == 0) {	/* end of group */
    728  1.14      phil 						endnetgrent();
    729  1.14      phil 						s = -1;
    730  1.14      phil 						continue;
    731  1.14      phil 					} else {
    732  1.14      phil 						if(user && *user) {
    733  1.14      phil 							r = yp_match(__ypdomain,
    734  1.14      phil 							    "passwd.byname",
    735  1.14      phil 							    user, strlen(user),
    736  1.14      phil 							    &__ypcurrent,
    737  1.14      phil 							    &__ypcurrentlen);
    738  1.14      phil 						} else
    739  1.14      phil 							goto pwuid_netgrp;
    740  1.14      phil 						if(r != 0) {
    741  1.14      phil 							if(__ypcurrent)
    742  1.14      phil 							    free(__ypcurrent);
    743  1.14      phil 							__ypcurrent = NULL;
    744  1.14      phil 							/*
    745  1.14      phil                                                          * just because this
    746  1.14      phil 							 * user is bad, doesn't
    747  1.14      phil 							 * mean they all are.
    748  1.14      phil 							 */
    749  1.14      phil 							goto pwuid_netgrp;
    750  1.14      phil 						}
    751  1.14      phil 					}
    752  1.10   deraadt 					break;
    753  1.10   deraadt 				default:
    754  1.14      phil 					if(__ypcurrent) {
    755  1.14      phil 						free(__ypcurrent);
    756  1.14      phil 						__ypcurrent = NULL;
    757  1.14      phil 					}
    758  1.14      phil 					user = _pw_passwd.pw_name + 1;
    759  1.14      phil 					r = yp_match(__ypdomain,
    760  1.14      phil 						"passwd.byname",
    761  1.14      phil 						user, strlen(user),
    762  1.14      phil 						&__ypcurrent,
    763  1.14      phil 						&__ypcurrentlen);
    764  1.14      phil 					if(r != 0) {
    765  1.14      phil 						if(__ypcurrent)
    766  1.14      phil 							free(__ypcurrent);
    767  1.14      phil 						__ypcurrent = NULL;
    768  1.14      phil 						continue;
    769  1.14      phil 					}
    770  1.14      phil 					break;
    771   1.4   deraadt 				}
    772  1.10   deraadt 				bcopy(__ypcurrent, line, __ypcurrentlen);
    773  1.10   deraadt 				line[__ypcurrentlen] = '\0';
    774  1.14      phil 				if(__ypparse(&_pw_passwd, line)
    775  1.14      phil 				   || __ypexclude_is(_pw_passwd.pw_name)) {
    776  1.14      phil 					if(s == 1)	/* inside netgroup */
    777  1.14      phil 						goto pwuid_netgrp;
    778  1.10   deraadt 					continue;
    779  1.14      phil 				}
    780  1.14      phil 				break;
    781  1.14      phil 			case '-':
    782  1.14      phil 				/* attempted exclusion */
    783  1.14      phil 				switch(_pw_passwd.pw_name[1]) {
    784  1.14      phil 				case '\0':
    785  1.14      phil 					break;
    786  1.14      phil 				case '@':
    787  1.14      phil 					setnetgrent(_pw_passwd.pw_name + 2);
    788  1.14      phil 					while(getnetgrent(&host, &user, &dom)) {
    789  1.14      phil 						if(user && *user)
    790  1.14      phil 							__ypexclude_add(user);
    791  1.14      phil 					}
    792  1.14      phil 					endnetgrent();
    793  1.14      phil 					break;
    794  1.14      phil 				default:
    795  1.14      phil 					__ypexclude_add(_pw_passwd.pw_name + 1);
    796  1.14      phil 					break;
    797  1.14      phil 				}
    798  1.14      phil 				break;
    799  1.14      phil 
    800  1.14      phil 				continue;
    801   1.4   deraadt 			}
    802  1.10   deraadt 			if( _pw_passwd.pw_uid == uid) {
    803  1.10   deraadt 				if (!_pw_stayopen) {
    804  1.10   deraadt 					(void)(_pw_db->close)(_pw_db);
    805  1.10   deraadt 					_pw_db = (DB *)NULL;
    806  1.10   deraadt 				}
    807  1.14      phil 				if (__ypexclude != (DB *)NULL) {
    808  1.14      phil 					(void)(__ypexclude->close)(__ypexclude);
    809  1.14      phil 					__ypexclude = (DB *)NULL;
    810  1.14      phil 				}
    811  1.14      phil 				__ypproto = NULL;
    812  1.10   deraadt 				return &_pw_passwd;
    813   1.4   deraadt 			}
    814  1.14      phil 			if(s == 1)	/* inside netgroup */
    815  1.14      phil 				goto pwuid_netgrp;
    816  1.10   deraadt 			continue;
    817   1.4   deraadt 		}
    818  1.10   deraadt 		if (!_pw_stayopen) {
    819  1.10   deraadt 			(void)(_pw_db->close)(_pw_db);
    820  1.10   deraadt 			_pw_db = (DB *)NULL;
    821   1.4   deraadt 		}
    822  1.14      phil 		if(__ypexclude != (DB *)NULL) {
    823  1.14      phil 			(void)(__ypexclude->close)(__ypexclude);
    824  1.14      phil 			__ypexclude = (DB *)NULL;
    825  1.14      phil 		}
    826  1.14      phil 		__ypproto = (struct passwd *)NULL;
    827  1.10   deraadt 		return (struct passwd *)NULL;
    828   1.4   deraadt 	}
    829  1.10   deraadt #endif /* YP */
    830   1.1       cgd 
    831   1.1       cgd 	bf[0] = _PW_KEYBYUID;
    832   1.1       cgd 	keyuid = uid;
    833   1.1       cgd 	bcopy(&keyuid, bf + 1, sizeof(keyuid));
    834   1.1       cgd 	key.data = (u_char *)bf;
    835   1.1       cgd 	key.size = sizeof(keyuid) + 1;
    836   1.1       cgd 	rval = __hashpw(&key);
    837   1.1       cgd 
    838   1.1       cgd 	if (!_pw_stayopen) {
    839   1.1       cgd 		(void)(_pw_db->close)(_pw_db);
    840   1.1       cgd 		_pw_db = (DB *)NULL;
    841   1.1       cgd 	}
    842   1.1       cgd 	return(rval ? &_pw_passwd : (struct passwd *)NULL);
    843   1.1       cgd }
    844   1.1       cgd 
    845   1.1       cgd int
    846   1.1       cgd setpassent(stayopen)
    847   1.1       cgd 	int stayopen;
    848   1.1       cgd {
    849   1.1       cgd 	_pw_keynum = 0;
    850   1.1       cgd 	_pw_stayopen = stayopen;
    851   1.9       jtc #ifdef YP
    852  1.14      phil 	__ypmode = YPMODE_NONE;
    853   1.9       jtc 	if(__ypcurrent)
    854   1.9       jtc 		free(__ypcurrent);
    855   1.9       jtc 	__ypcurrent = NULL;
    856  1.14      phil 	if(__ypexclude != (DB *)NULL) {
    857  1.14      phil 		(void)(__ypexclude->close)(__ypexclude);
    858  1.14      phil 		__ypexclude = (DB *)NULL;
    859  1.14      phil 	}
    860  1.14      phil 	__ypproto = (struct passwd *)NULL;
    861   1.9       jtc #endif
    862   1.1       cgd 	return(1);
    863   1.1       cgd }
    864   1.1       cgd 
    865   1.8       jtc void
    866   1.1       cgd setpwent()
    867   1.1       cgd {
    868   1.9       jtc 	(void) setpassent(0);
    869   1.1       cgd }
    870   1.1       cgd 
    871   1.1       cgd void
    872   1.1       cgd endpwent()
    873   1.1       cgd {
    874   1.1       cgd 	_pw_keynum = 0;
    875   1.1       cgd 	if (_pw_db) {
    876   1.1       cgd 		(void)(_pw_db->close)(_pw_db);
    877   1.1       cgd 		_pw_db = (DB *)NULL;
    878   1.1       cgd 	}
    879   1.4   deraadt #ifdef YP
    880  1.14      phil 	__ypmode = YPMODE_NONE;
    881   1.4   deraadt 	if(__ypcurrent)
    882   1.4   deraadt 		free(__ypcurrent);
    883   1.4   deraadt 	__ypcurrent = NULL;
    884  1.14      phil 	if(__ypexclude != (DB *)NULL) {
    885  1.14      phil 		(void)(__ypexclude->close)(__ypexclude);
    886  1.14      phil 		__ypexclude = (DB *)NULL;
    887  1.14      phil 	}
    888  1.14      phil 	__ypproto = (struct passwd *)NULL;
    889   1.4   deraadt #endif
    890   1.1       cgd }
    891   1.1       cgd 
    892   1.4   deraadt static int
    893   1.1       cgd __initdb()
    894   1.1       cgd {
    895   1.1       cgd 	static int warned;
    896   1.1       cgd 	char *p;
    897   1.1       cgd 
    898  1.14      phil #ifdef YP
    899  1.14      phil 	__ypmode = YPMODE_NONE;
    900  1.14      phil #endif
    901   1.1       cgd 	p = (geteuid()) ? _PATH_MP_DB : _PATH_SMP_DB;
    902   1.3    proven 	_pw_db = dbopen(p, O_RDONLY, 0, DB_HASH, NULL);
    903   1.1       cgd 	if (_pw_db)
    904   1.1       cgd 		return(1);
    905   1.1       cgd 	if (!warned)
    906   1.1       cgd 		syslog(LOG_ERR, "%s: %m", p);
    907  1.11   deraadt 	warned = 1;
    908   1.1       cgd 	return(0);
    909   1.1       cgd }
    910   1.1       cgd 
    911   1.4   deraadt static int
    912   1.1       cgd __hashpw(key)
    913   1.1       cgd 	DBT *key;
    914   1.1       cgd {
    915  1.17     lukem 	char *p, *t;
    916   1.1       cgd 	static u_int max;
    917   1.1       cgd 	static char *line;
    918   1.1       cgd 	DBT data;
    919   1.1       cgd 
    920   1.1       cgd 	if ((_pw_db->get)(_pw_db, key, &data, 0))
    921   1.1       cgd 		return(0);
    922   1.1       cgd 	p = (char *)data.data;
    923  1.14      phil 	if (data.size > max && !(line = realloc(line, (max += 1024))))
    924   1.1       cgd 		return(0);
    925   1.1       cgd 
    926   1.1       cgd 	t = line;
    927  1.14      phil #define	EXPAND(e)	e = t; while ((*t++ = *p++));
    928   1.1       cgd 	EXPAND(_pw_passwd.pw_name);
    929   1.1       cgd 	EXPAND(_pw_passwd.pw_passwd);
    930   1.1       cgd 	bcopy(p, (char *)&_pw_passwd.pw_uid, sizeof(int));
    931   1.1       cgd 	p += sizeof(int);
    932   1.1       cgd 	bcopy(p, (char *)&_pw_passwd.pw_gid, sizeof(int));
    933   1.1       cgd 	p += sizeof(int);
    934   1.1       cgd 	bcopy(p, (char *)&_pw_passwd.pw_change, sizeof(time_t));
    935   1.1       cgd 	p += sizeof(time_t);
    936   1.1       cgd 	EXPAND(_pw_passwd.pw_class);
    937   1.1       cgd 	EXPAND(_pw_passwd.pw_gecos);
    938   1.1       cgd 	EXPAND(_pw_passwd.pw_dir);
    939   1.1       cgd 	EXPAND(_pw_passwd.pw_shell);
    940   1.1       cgd 	bcopy(p, (char *)&_pw_passwd.pw_expire, sizeof(time_t));
    941   1.1       cgd 	p += sizeof(time_t);
    942  1.14      phil 
    943  1.14      phil 	/* See if there's any data left.  If so, read in flags. */
    944  1.14      phil 	if (data.size > (p - (char *)data.data)) {
    945  1.14      phil 		bcopy(p, (char *)&_pw_flags, sizeof(int));
    946  1.14      phil 		p += sizeof(int);
    947  1.14      phil 	} else
    948  1.14      phil 		_pw_flags = _PASSWORD_NOUID|_PASSWORD_NOGID;	/* default */
    949  1.14      phil 
    950   1.1       cgd 	return(1);
    951   1.1       cgd }
    952