[thirdparty/openssh-portable.git] / auth-rhosts.c

/* $OpenBSD: auth-rhosts.c,v 1.57 2022/12/09 00:17:40 dtucker Exp $ */
/*
 * Author: Tatu Ylonen <ylo@cs.hut.fi>
 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
 *                    All rights reserved
 * Rhosts authentication.  This file contains code to check whether to admit
 * the login based on rhosts authentication.  This file also processes
 * /etc/hosts.equiv.
 *
 * As far as I am concerned, the code I have written for this software
 * can be used freely for any purpose.  Any derived versions of this
 * software must be clearly marked as such, and if the derived work is
 * incompatible with the protocol description in the RFC file, it must be
 * called by a name other than "ssh" or "Secure Shell".
 */

#include "includes.h"

#include <sys/types.h>
#include <sys/stat.h>

#include <errno.h>
#include <fcntl.h>
#ifdef HAVE_NETGROUP_H
# include <netgroup.h>
#endif
#include <pwd.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>

#include "packet.h"
#include "uidswap.h"
#include "pathnames.h"
#include "log.h"
#include "misc.h"
#include "xmalloc.h"
#include "sshbuf.h"
#include "sshkey.h"
#include "servconf.h"
#include "canohost.h"
#include "hostfile.h"
#include "auth.h"

/* import */
extern ServerOptions options;
extern int use_privsep;

/*
 * This function processes an rhosts-style file (.rhosts, .shosts, or
 * /etc/hosts.equiv).  This returns true if authentication can be granted
 * based on the file, and returns zero otherwise.
 */

static int
check_rhosts_file(const char *filename, const char *hostname,
		  const char *ipaddr, const char *client_user,
		  const char *server_user)
{
	FILE *f;
#define RBUFLN 1024
	char buf[RBUFLN];/* Must not be larger than host, user, dummy below. */
	int fd;
	struct stat st;

	/* Open the .rhosts file, deny if unreadable */
	if ((fd = open(filename, O_RDONLY|O_NONBLOCK)) == -1)
		return 0;
	if (fstat(fd, &st) == -1) {
		close(fd);
		return 0;
	}
	if (!S_ISREG(st.st_mode)) {
		logit("User %s hosts file %s is not a regular file",
		    server_user, filename);
		close(fd);
		return 0;
	}
	unset_nonblock(fd);
	if ((f = fdopen(fd, "r")) == NULL) {
		close(fd);
		return 0;
	}
	while (fgets(buf, sizeof(buf), f)) {
		/* All three must have length >= buf to avoid overflows. */
		char hostbuf[RBUFLN], userbuf[RBUFLN], dummy[RBUFLN];
		char *host, *user, *cp;
		int negated;

		for (cp = buf; *cp == ' ' || *cp == '\t'; cp++)
			;
		if (*cp == '#' || *cp == '\n' || !*cp)
			continue;

		/*
		 * NO_PLUS is supported at least on OSF/1.  We skip it (we
		 * don't ever support the plus syntax).
		 */
		if (strncmp(cp, "NO_PLUS", 7) == 0)
			continue;

		/*
		 * This should be safe because each buffer is as big as the
		 * whole string, and thus cannot be overwritten.
		 */
		switch (sscanf(buf, "%1023s %1023s %1023s", hostbuf, userbuf,
		    dummy)) {
		case 0:
			auth_debug_add("Found empty line in %.100s.", filename);
			continue;
		case 1:
			/* Host name only. */
			strlcpy(userbuf, server_user, sizeof(userbuf));
			break;
		case 2:
			/* Got both host and user name. */
			break;
		case 3:
			auth_debug_add("Found garbage in %.100s.", filename);
			continue;
		default:
			/* Weird... */
			continue;
		}

		host = hostbuf;
		user = userbuf;
		negated = 0;

		/* Process negated host names, or positive netgroups. */
		if (host[0] == '-') {
			negated = 1;
			host++;
		} else if (host[0] == '+')
			host++;

		if (user[0] == '-') {
			negated = 1;
			user++;
		} else if (user[0] == '+')
			user++;

		/* Check for empty host/user names (particularly '+'). */
		if (!host[0] || !user[0]) {
			/* We come here if either was '+' or '-'. */
			auth_debug_add("Ignoring wild host/user names "
			    "in %.100s.", filename);
			continue;
		}
		/* Verify that host name matches. */
		if (host[0] == '@') {
			if (!innetgr(host + 1, hostname, NULL, NULL) &&
			    !innetgr(host + 1, ipaddr, NULL, NULL))
				continue;
		} else if (strcasecmp(host, hostname) &&
		    strcmp(host, ipaddr) != 0)
			continue;	/* Different hostname. */

		/* Verify that user name matches. */
		if (user[0] == '@') {
			if (!innetgr(user + 1, NULL, client_user, NULL))
				continue;
		} else if (strcmp(user, client_user) != 0)
			continue;	/* Different username. */

		/* Found the user and host. */
		fclose(f);

		/* If the entry was negated, deny access. */
		if (negated) {
			auth_debug_add("Matched negative entry in %.100s.",
			    filename);
			return 0;
		}
		/* Accept authentication. */
		return 1;
	}

	/* Authentication using this file denied. */
	fclose(f);
	return 0;
}

/*
 * Tries to authenticate the user using the .shosts or .rhosts file. Returns
 * true if authentication succeeds.  If ignore_rhosts is true, only
 * /etc/hosts.equiv will be considered (.rhosts and .shosts are ignored).
 */
int
auth_rhosts2(struct passwd *pw, const char *client_user, const char *hostname,
    const char *ipaddr)
{
	char *path = NULL;
	struct stat st;
	static const char * const rhosts_files[] = {".shosts", ".rhosts", NULL};
	u_int rhosts_file_index;
	int r;

	debug2_f("clientuser %s hostname %s ipaddr %s",
	    client_user, hostname, ipaddr);

	/* Switch to the user's uid. */
	temporarily_use_uid(pw);
	/*
	 * Quick check: if the user has no .shosts or .rhosts files and
	 * no system hosts.equiv/shosts.equiv files exist then return
	 * failure immediately without doing costly lookups from name
	 * servers.
	 */
	for (rhosts_file_index = 0; rhosts_files[rhosts_file_index];
	    rhosts_file_index++) {
		/* Check users .rhosts or .shosts. */
		xasprintf(&path, "%s/%s",
		    pw->pw_dir, rhosts_files[rhosts_file_index]);
		r = stat(path, &st);
		free(path);
		if (r >= 0)
			break;
	}
	/* Switch back to privileged uid. */
	restore_uid();

	/*
	 * Deny if The user has no .shosts or .rhosts file and there
	 * are no system-wide files.
	 */
	if (!rhosts_files[rhosts_file_index] &&
	    stat(_PATH_RHOSTS_EQUIV, &st) == -1 &&
	    stat(_PATH_SSH_HOSTS_EQUIV, &st) == -1) {
		debug3_f("no hosts access files exist");
		return 0;
	}

	/*
	 * If not logging in as superuser, try /etc/hosts.equiv and
	 * shosts.equiv.
	 */
	if (pw->pw_uid == 0)
		debug3_f("root user, ignoring system hosts files");
	else {
		if (check_rhosts_file(_PATH_RHOSTS_EQUIV, hostname, ipaddr,
		    client_user, pw->pw_name)) {
			auth_debug_add("Accepted for %.100s [%.100s] by "
			    "/etc/hosts.equiv.", hostname, ipaddr);
			return 1;
		}
		if (check_rhosts_file(_PATH_SSH_HOSTS_EQUIV, hostname, ipaddr,
		    client_user, pw->pw_name)) {
			auth_debug_add("Accepted for %.100s [%.100s] by "
			    "%.100s.", hostname, ipaddr, _PATH_SSH_HOSTS_EQUIV);
			return 1;
		}
	}

	/*
	 * Check that the home directory is owned by root or the user, and is
	 * not group or world writable.
	 */
	if (stat(pw->pw_dir, &st) == -1) {
		logit("Rhosts authentication refused for %.100s: "
		    "no home directory %.200s", pw->pw_name, pw->pw_dir);
		auth_debug_add("Rhosts authentication refused for %.100s: "
		    "no home directory %.200s", pw->pw_name, pw->pw_dir);
		return 0;
	}
	if (options.strict_modes &&
	    ((st.st_uid != 0 && st.st_uid != pw->pw_uid) ||
	    (st.st_mode & 022) != 0)) {
		logit("Rhosts authentication refused for %.100s: "
		    "bad ownership or modes for home directory.", pw->pw_name);
		auth_debug_add("Rhosts authentication refused for %.100s: "
		    "bad ownership or modes for home directory.", pw->pw_name);
		return 0;
	}
	/* Temporarily use the user's uid. */
	temporarily_use_uid(pw);

	/* Check all .rhosts files (currently .shosts and .rhosts). */
	for (rhosts_file_index = 0; rhosts_files[rhosts_file_index];
	    rhosts_file_index++) {
		/* Check users .rhosts or .shosts. */
		xasprintf(&path, "%s/%s",
		    pw->pw_dir, rhosts_files[rhosts_file_index]);
		if (stat(path, &st) == -1) {
			debug3_f("stat %s: %s", path, strerror(errno));
			free(path);
			continue;
		}

		/*
		 * Make sure that the file is either owned by the user or by
		 * root, and make sure it is not writable by anyone but the
		 * owner.  This is to help avoid novices accidentally
		 * allowing access to their account by anyone.
		 */
		if (options.strict_modes &&
		    ((st.st_uid != 0 && st.st_uid != pw->pw_uid) ||
		    (st.st_mode & 022) != 0)) {
			logit("Rhosts authentication refused for %.100s: "
			    "bad modes for %.200s", pw->pw_name, path);
			auth_debug_add("Bad file modes for %.200s", path);
			free(path);
			continue;
		}
		/*
		 * Check if we have been configured to ignore .rhosts
		 * and .shosts files.
		 */
		if (options.ignore_rhosts == IGNORE_RHOSTS_YES ||
		    (options.ignore_rhosts == IGNORE_RHOSTS_SHOSTS &&
		    strcmp(rhosts_files[rhosts_file_index], ".shosts") != 0)) {
			auth_debug_add("Server has been configured to "
			    "ignore %.100s.", rhosts_files[rhosts_file_index]);
			free(path);
			continue;
		}
		/* Check if authentication is permitted by the file. */
		if (check_rhosts_file(path, hostname, ipaddr,
		    client_user, pw->pw_name)) {
			auth_debug_add("Accepted by %.100s.",
			    rhosts_files[rhosts_file_index]);
			/* Restore the privileged uid. */
			restore_uid();
			auth_debug_add("Accepted host %s ip %s client_user "
			    "%s server_user %s", hostname, ipaddr,
			    client_user, pw->pw_name);
			free(path);
			return 1;
		}
		free(path);
	}

	/* Restore the privileged uid. */
	restore_uid();
	return 0;
}
Commit	Line	Data
a6183e25	1	/* $OpenBSD: auth-rhosts.c,v 1.57 2022/12/09 00:17:40 dtucker Exp $ */
d4a8b7e3	2	/*
95def098	3	* Author: Tatu Ylonen <ylo@cs.hut.fi>
95def098 DM	4	* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
95def098 DM	5	* All rights reserved
95def098 DM	6	* Rhosts authentication. This file contains code to check whether to admit
	7	* the login based on rhosts authentication. This file also processes
	8	* /etc/hosts.equiv.
4af51306	9	*
e4340be5 DM	10	* As far as I am concerned, the code I have written for this software
	11	* can be used freely for any purpose. Any derived versions of this
	12	* software must be clearly marked as such, and if the derived work is
	13	* incompatible with the protocol description in the RFC file, it must be
	14	* called by a name other than "ssh" or "Secure Shell".
95def098	15	*/
d4a8b7e3 DM	16
d4a8b7e3 DM	17	#include "includes.h"
f17883e6 DM	18
	19	#include <sys/types.h>
	20	#include <sys/stat.h>
015cd79a	21
a6183e25	22	#include <errno.h>
3383b2ca	23	#include <fcntl.h>
015cd79a DM	24	#ifdef HAVE_NETGROUP_H
	25	# include <netgroup.h>
	26	#endif
9f2abc47	27	#include <pwd.h>
a7a73ee3	28	#include <stdio.h>
e3476ed0	29	#include <string.h>
d7834353	30	#include <stdarg.h>
3383b2ca	31	#include <stdlib.h>
d9526a5e	32	#include <unistd.h>
d4a8b7e3 DM	33
d4a8b7e3 DM	34	#include "packet.h"
d4a8b7e3	35	#include "uidswap.h"
226cfa03 BL	36	#include "pathnames.h"
226cfa03 BL	37	#include "log.h"
7acefbbc	38	#include "misc.h"
bf114d6f	39	#include "xmalloc.h"
c7d39ac8	40	#include "sshbuf.h"
c7d39ac8	41	#include "sshkey.h"
6d7b2cd1	42	#include "servconf.h"
226cfa03	43	#include "canohost.h"
d7834353	44	#include "hostfile.h"
31ca54aa	45	#include "auth.h"
d4a8b7e3	46
5eabda30 BL	47	/* import */
5eabda30 BL	48	extern ServerOptions options;
bdde330d	49	extern int use_privsep;
5eabda30	50
5428f646 DM	51	/*
	52	* This function processes an rhosts-style file (.rhosts, .shosts, or
	53	* /etc/hosts.equiv). This returns true if authentication can be granted
	54	* based on the file, and returns zero otherwise.
	55	*/
d4a8b7e3	56
bba81213	57	static int
95def098 DM	58	check_rhosts_file(const char filename, const char hostname,
	59	const char ipaddr, const char client_user,
	60	const char *server_user)
d4a8b7e3	61	{
95def098	62	FILE *f;
5191df92	63	#define RBUFLN 1024
5191df92	64	char buf[RBUFLN];/* Must not be larger than host, user, dummy below. */
06db584e DT	65	int fd;
06db584e DT	66	struct stat st;
95def098 DM	67
95def098 DM	68	/* Open the .rhosts file, deny if unreadable */
06db584e	69	if ((fd = open(filename, O_RDONLY\|O_NONBLOCK)) == -1)
95def098	70	return 0;
06db584e DT	71	if (fstat(fd, &st) == -1) {
	72	close(fd);
	73	return 0;
	74	}
	75	if (!S_ISREG(st.st_mode)) {
	76	logit("User %s hosts file %s is not a regular file",
	77	server_user, filename);
	78	close(fd);
	79	return 0;
	80	}
	81	unset_nonblock(fd);
	82	if ((f = fdopen(fd, "r")) == NULL) {
	83	close(fd);
	84	return 0;
	85	}
95def098	86	while (fgets(buf, sizeof(buf), f)) {
5191df92	87	/* All three must have length >= buf to avoid overflows. */
	88	char hostbuf[RBUFLN], userbuf[RBUFLN], dummy[RBUFLN];
	89	char host, user, *cp;
95def098 DM	90	int negated;
	91
	92	for (cp = buf; cp == ' ' \|\| cp == '\t'; cp++)
	93	;
	94	if (cp == '#' \|\| cp == '\n' \|\| !*cp)
	95	continue;
	96
5428f646 DM	97	/*
	98	* NO_PLUS is supported at least on OSF/1. We skip it (we
	99	* don't ever support the plus syntax).
	100	*/
95def098 DM	101	if (strncmp(cp, "NO_PLUS", 7) == 0)
	102	continue;
	103
5428f646 DM	104	/*
	105	* This should be safe because each buffer is as big as the
	106	* whole string, and thus cannot be overwritten.
	107	*/
a9825785 DM	108	switch (sscanf(buf, "%1023s %1023s %1023s", hostbuf, userbuf,
a9825785 DM	109	dummy)) {
95def098	110	case 0:
bdde330d	111	auth_debug_add("Found empty line in %.100s.", filename);
95def098 DM	112	continue;
	113	case 1:
	114	/* Host name only. */
	115	strlcpy(userbuf, server_user, sizeof(userbuf));
	116	break;
	117	case 2:
	118	/* Got both host and user name. */
	119	break;
	120	case 3:
bdde330d	121	auth_debug_add("Found garbage in %.100s.", filename);
95def098 DM	122	continue;
	123	default:
	124	/* Weird... */
	125	continue;
	126	}
	127
	128	host = hostbuf;
	129	user = userbuf;
	130	negated = 0;
	131
	132	/* Process negated host names, or positive netgroups. */
	133	if (host[0] == '-') {
	134	negated = 1;
	135	host++;
	136	} else if (host[0] == '+')
	137	host++;
	138
	139	if (user[0] == '-') {
	140	negated = 1;
	141	user++;
	142	} else if (user[0] == '+')
	143	user++;
	144
	145	/* Check for empty host/user names (particularly '+'). */
	146	if (!host[0] \|\| !user[0]) {
	147	/* We come here if either was '+' or '-'. */
5191df92	148	auth_debug_add("Ignoring wild host/user names "
5191df92	149	"in %.100s.", filename);
95def098 DM	150	continue;
	151	}
	152	/* Verify that host name matches. */
	153	if (host[0] == '@') {
	154	if (!innetgr(host + 1, hostname, NULL, NULL) &&
	155	!innetgr(host + 1, ipaddr, NULL, NULL))
	156	continue;
5191df92	157	} else if (strcasecmp(host, hostname) &&
5191df92	158	strcmp(host, ipaddr) != 0)
95def098 DM	159	continue; /* Different hostname. */
	160
	161	/* Verify that user name matches. */
	162	if (user[0] == '@') {
	163	if (!innetgr(user + 1, NULL, client_user, NULL))
	164	continue;
	165	} else if (strcmp(user, client_user) != 0)
	166	continue; /* Different username. */
	167
	168	/* Found the user and host. */
	169	fclose(f);
	170
	171	/* If the entry was negated, deny access. */
	172	if (negated) {
bdde330d	173	auth_debug_add("Matched negative entry in %.100s.",
0dc1bef1	174	filename);
95def098 DM	175	return 0;
	176	}
	177	/* Accept authentication. */
	178	return 1;
d4a8b7e3	179	}
d4a8b7e3	180
95def098 DM	181	/* Authentication using this file denied. */
	182	fclose(f);
	183	return 0;
d4a8b7e3 DM	184	}
d4a8b7e3 DM	185
5428f646 DM	186	/*
	187	* Tries to authenticate the user using the .shosts or .rhosts file. Returns
	188	* true if authentication succeeds. If ignore_rhosts is true, only
	189	* /etc/hosts.equiv will be considered (.rhosts and .shosts are ignored).
	190	*/
4af51306	191	int
6cb6dcff	192	auth_rhosts2(struct passwd pw, const char client_user, const char *hostname,
5eabda30 BL	193	const char *ipaddr)
5eabda30 BL	194	{
bf114d6f	195	char *path = NULL;
95def098	196	struct stat st;
541667fe	197	static const char * const rhosts_files[] = {".shosts", ".rhosts", NULL};
46c16220	198	u_int rhosts_file_index;
bf114d6f	199	int r;
95def098	200
bf114d6f	201	debug2_f("clientuser %s hostname %s ipaddr %s",
5eabda30 BL	202	client_user, hostname, ipaddr);
5eabda30 BL	203
95def098	204	/* Switch to the user's uid. */
3fcf1a22	205	temporarily_use_uid(pw);
5428f646	206	/*
5191df92	207	* Quick check: if the user has no .shosts or .rhosts files and
5191df92	208	* no system hosts.equiv/shosts.equiv files exist then return
5428f646 DM	209	* failure immediately without doing costly lookups from name
	210	* servers.
	211	*/
95def098	212	for (rhosts_file_index = 0; rhosts_files[rhosts_file_index];
9f0f5c64	213	rhosts_file_index++) {
95def098	214	/* Check users .rhosts or .shosts. */
bf114d6f	215	xasprintf(&path, "%s/%s",
	216	pw->pw_dir, rhosts_files[rhosts_file_index]);
	217	r = stat(path, &st);
	218	free(path);
	219	if (r >= 0)
95def098	220	break;
d4a8b7e3	221	}
95def098 DM	222	/* Switch back to privileged uid. */
	223	restore_uid();
	224
5191df92	225	/*
	226	* Deny if The user has no .shosts or .rhosts file and there
	227	* are no system-wide files.
	228	*/
95def098	229	if (!rhosts_files[rhosts_file_index] &&
4d28fa78	230	stat(_PATH_RHOSTS_EQUIV, &st) == -1 &&
4d28fa78	231	stat(_PATH_SSH_HOSTS_EQUIV, &st) == -1) {
816036f1	232	debug3_f("no hosts access files exist");
95def098	233	return 0;
5191df92	234	}
95def098	235
5191df92	236	/*
	237	* If not logging in as superuser, try /etc/hosts.equiv and
	238	* shosts.equiv.
	239	*/
	240	if (pw->pw_uid == 0)
816036f1	241	debug3_f("root user, ignoring system hosts files");
5191df92	242	else {
9f0f5c64 DM	243	if (check_rhosts_file(_PATH_RHOSTS_EQUIV, hostname, ipaddr,
9f0f5c64 DM	244	client_user, pw->pw_name)) {
5191df92	245	auth_debug_add("Accepted for %.100s [%.100s] by "
5191df92	246	"/etc/hosts.equiv.", hostname, ipaddr);
95def098 DM	247	return 1;
95def098 DM	248	}
9f0f5c64 DM	249	if (check_rhosts_file(_PATH_SSH_HOSTS_EQUIV, hostname, ipaddr,
9f0f5c64 DM	250	client_user, pw->pw_name)) {
5191df92	251	auth_debug_add("Accepted for %.100s [%.100s] by "
5191df92	252	"%.100s.", hostname, ipaddr, _PATH_SSH_HOSTS_EQUIV);
95def098 DM	253	return 1;
95def098 DM	254	}
d4a8b7e3	255	}
5191df92	256
5428f646 DM	257	/*
	258	* Check that the home directory is owned by root or the user, and is
	259	* not group or world writable.
	260	*/
4d28fa78	261	if (stat(pw->pw_dir, &st) == -1) {
996acd24	262	logit("Rhosts authentication refused for %.100s: "
bdde330d BL	263	"no home directory %.200s", pw->pw_name, pw->pw_dir);
	264	auth_debug_add("Rhosts authentication refused for %.100s: "
	265	"no home directory %.200s", pw->pw_name, pw->pw_dir);
95def098	266	return 0;
d4a8b7e3	267	}
95def098 DM	268	if (options.strict_modes &&
95def098 DM	269	((st.st_uid != 0 && st.st_uid != pw->pw_uid) \|\|
9f0f5c64	270	(st.st_mode & 022) != 0)) {
996acd24	271	logit("Rhosts authentication refused for %.100s: "
bdde330d BL	272	"bad ownership or modes for home directory.", pw->pw_name);
	273	auth_debug_add("Rhosts authentication refused for %.100s: "
	274	"bad ownership or modes for home directory.", pw->pw_name);
95def098	275	return 0;
d4a8b7e3	276	}
95def098	277	/* Temporarily use the user's uid. */
3fcf1a22	278	temporarily_use_uid(pw);
95def098 DM	279
	280	/* Check all .rhosts files (currently .shosts and .rhosts). */
	281	for (rhosts_file_index = 0; rhosts_files[rhosts_file_index];
9f0f5c64	282	rhosts_file_index++) {
95def098	283	/* Check users .rhosts or .shosts. */
bf114d6f	284	xasprintf(&path, "%s/%s",
	285	pw->pw_dir, rhosts_files[rhosts_file_index]);
	286	if (stat(path, &st) == -1) {
a6183e25	287	debug3_f("stat %s: %s", path, strerror(errno));
bf114d6f	288	free(path);
95def098	289	continue;
bf114d6f	290	}
95def098	291
5428f646 DM	292	/*
	293	* Make sure that the file is either owned by the user or by
	294	* root, and make sure it is not writable by anyone but the
	295	* owner. This is to help avoid novices accidentally
	296	* allowing access to their account by anyone.
	297	*/
95def098 DM	298	if (options.strict_modes &&
95def098 DM	299	((st.st_uid != 0 && st.st_uid != pw->pw_uid) \|\|
9f0f5c64	300	(st.st_mode & 022) != 0)) {
bf114d6f	301	logit("Rhosts authentication refused for %.100s: "
	302	"bad modes for %.200s", pw->pw_name, path);
	303	auth_debug_add("Bad file modes for %.200s", path);
	304	free(path);
95def098 DM	305	continue;
95def098 DM	306	}
5191df92	307	/*
	308	* Check if we have been configured to ignore .rhosts
	309	* and .shosts files.
	310	*/
c90f72d2	311	if (options.ignore_rhosts == IGNORE_RHOSTS_YES \|\|
	312	(options.ignore_rhosts == IGNORE_RHOSTS_SHOSTS &&
	313	strcmp(rhosts_files[rhosts_file_index], ".shosts") != 0)) {
5191df92	314	auth_debug_add("Server has been configured to "
5191df92	315	"ignore %.100s.", rhosts_files[rhosts_file_index]);
bf114d6f	316	free(path);
95def098 DM	317	continue;
	318	}
	319	/* Check if authentication is permitted by the file. */
bf114d6f	320	if (check_rhosts_file(path, hostname, ipaddr,
5191df92	321	client_user, pw->pw_name)) {
bdde330d BL	322	auth_debug_add("Accepted by %.100s.",
bdde330d BL	323	rhosts_files[rhosts_file_index]);
95def098 DM	324	/* Restore the privileged uid. */
95def098 DM	325	restore_uid();
5191df92	326	auth_debug_add("Accepted host %s ip %s client_user "
	327	"%s server_user %s", hostname, ipaddr,
	328	client_user, pw->pw_name);
bf114d6f	329	free(path);
95def098 DM	330	return 1;
95def098 DM	331	}
bf114d6f	332	free(path);
d4a8b7e3	333	}
d4a8b7e3	334
95def098 DM	335	/* Restore the privileged uid. */
	336	restore_uid();
	337	return 0;
d4a8b7e3	338	}