[openssh.git] / auth-rhosts.c

/* $OpenBSD: auth-rhosts.c,v 1.42 2008/06/13 04:40:22 djm 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>

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

#include "packet.h"
#include "buffer.h"
#include "uidswap.h"
#include "pathnames.h"
#include "log.h"
#include "servconf.h"
#include "canohost.h"
#include "key.h"
#include "hostfile.h"
#include "auth.h"
#include "misc.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;
	char buf[1024];	/* 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 be at least as big as buf to avoid overflows. */
		char hostbuf[1024], userbuf[1024], dummy[1024], *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_rhosts(struct passwd *pw, const char *client_user)
{
	const char *hostname, *ipaddr;

	hostname = get_canonical_hostname(options.use_dns);
	ipaddr = get_remote_ipaddr();
	return auth_rhosts2(pw, client_user, hostname, ipaddr);
}

static int
auth_rhosts2_raw(struct passwd *pw, const char *client_user, const char *hostname,
    const char *ipaddr)
{
	char buf[1024];
	struct stat st;
	static const char *rhosts_files[] = {".shosts", ".rhosts", NULL};
	u_int rhosts_file_index;

	debug2("auth_rhosts2: 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, 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. */
		snprintf(buf, sizeof buf, "%.500s/%.100s",
			 pw->pw_dir, rhosts_files[rhosts_file_index]);
		if (stat(buf, &st) >= 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) < 0 &&
	    stat(_PATH_SSH_HOSTS_EQUIV, &st) < 0)
		return 0;

	/* If not logging in as superuser, try /etc/hosts.equiv and shosts.equiv. */
	if (pw->pw_uid != 0) {
		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) < 0) {
		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. */
		snprintf(buf, sizeof buf, "%.500s/%.100s",
			 pw->pw_dir, rhosts_files[rhosts_file_index]);
		if (stat(buf, &st) < 0)
			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, buf);
			auth_debug_add("Bad file modes for %.200s", buf);
			continue;
		}
		/* Check if we have been configured to ignore .rhosts and .shosts files. */
		if (options.ignore_rhosts) {
			auth_debug_add("Server has been configured to ignore %.100s.",
			    rhosts_files[rhosts_file_index]);
			continue;
		}
		/* Check if authentication is permitted by the file. */
		if (check_rhosts_file(buf, 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);
			return 1;
		}
	}

	/* Restore the privileged uid. */
	restore_uid();
	return 0;
}

int
auth_rhosts2(struct passwd *pw, const char *client_user, const char *hostname,
    const char *ipaddr)
{
	int ret;

	auth_debug_reset();
	ret = auth_rhosts2_raw(pw, client_user, hostname, ipaddr);
	if (!use_privsep)
		auth_debug_send();
	return ret;
}
Commit	Line	Data
632f2669	1	/* $OpenBSD: auth-rhosts.c,v 1.42 2008/06/13 04:40:22 djm Exp $ */
8efc0c15	2	/*
5260325f	3	* Author: Tatu Ylonen <ylo@cs.hut.fi>
5260325f	4	* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5260325f	5	* All rights reserved
5260325f	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.
6ae2364d	9	*
bcbf86ec	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".
5260325f	15	*/
8efc0c15	16
8efc0c15	17	#include "includes.h"
4095f623	18
	19	#include <sys/types.h>
	20	#include <sys/stat.h>
c38f5d19	21
	22	#ifdef HAVE_NETGROUP_H
	23	# include <netgroup.h>
	24	#endif
b1842393	25	#include <pwd.h>
cf851879	26	#include <stdio.h>
00146caa	27	#include <string.h>
31652869	28	#include <stdarg.h>
632f2669	29	#include <fcntl.h>
8efc0c15	30
8efc0c15	31	#include "packet.h"
31652869	32	#include "buffer.h"
8efc0c15	33	#include "uidswap.h"
42f11eb2	34	#include "pathnames.h"
42f11eb2	35	#include "log.h"
6fa724bc	36	#include "servconf.h"
42f11eb2	37	#include "canohost.h"
31652869	38	#include "key.h"
31652869	39	#include "hostfile.h"
5ca51e19	40	#include "auth.h"
632f2669	41	#include "misc.h"
8efc0c15	42
8002af61	43	/* import */
8002af61	44	extern ServerOptions options;
b3ad3d88	45	extern int use_privsep;
8002af61	46
aa3378df	47	/*
	48	* This function processes an rhosts-style file (.rhosts, .shosts, or
	49	* /etc/hosts.equiv). This returns true if authentication can be granted
	50	* based on the file, and returns zero otherwise.
	51	*/
8efc0c15	52
396c147e	53	static int
5260325f	54	check_rhosts_file(const char filename, const char hostname,
	55	const char ipaddr, const char client_user,
	56	const char *server_user)
8efc0c15	57	{
5260325f	58	FILE *f;
5260325f	59	char buf[1024]; /* Must not be larger than host, user, dummy below. */
632f2669	60	int fd;
632f2669	61	struct stat st;
5260325f	62
5260325f	63	/* Open the .rhosts file, deny if unreadable */
632f2669	64	if ((fd = open(filename, O_RDONLY\|O_NONBLOCK)) == -1)
5260325f	65	return 0;
632f2669	66	if (fstat(fd, &st) == -1) {
	67	close(fd);
	68	return 0;
	69	}
	70	if (!S_ISREG(st.st_mode)) {
	71	logit("User %s hosts file %s is not a regular file",
	72	server_user, filename);
	73	close(fd);
	74	return 0;
	75	}
	76	unset_nonblock(fd);
	77	if ((f = fdopen(fd, "r")) == NULL) {
	78	close(fd);
	79	return 0;
	80	}
5260325f	81	while (fgets(buf, sizeof(buf), f)) {
	82	/* All three must be at least as big as buf to avoid overflows. */
	83	char hostbuf[1024], userbuf[1024], dummy[1024], host, user, *cp;
	84	int negated;
	85
	86	for (cp = buf; cp == ' ' \|\| cp == '\t'; cp++)
	87	;
	88	if (cp == '#' \|\| cp == '\n' \|\| !*cp)
	89	continue;
	90
aa3378df	91	/*
	92	* NO_PLUS is supported at least on OSF/1. We skip it (we
	93	* don't ever support the plus syntax).
	94	*/
5260325f	95	if (strncmp(cp, "NO_PLUS", 7) == 0)
	96	continue;
	97
aa3378df	98	/*
	99	* This should be safe because each buffer is as big as the
	100	* whole string, and thus cannot be overwritten.
	101	*/
013b1214	102	switch (sscanf(buf, "%1023s %1023s %1023s", hostbuf, userbuf,
013b1214	103	dummy)) {
5260325f	104	case 0:
b3ad3d88	105	auth_debug_add("Found empty line in %.100s.", filename);
5260325f	106	continue;
	107	case 1:
	108	/* Host name only. */
	109	strlcpy(userbuf, server_user, sizeof(userbuf));
	110	break;
	111	case 2:
	112	/* Got both host and user name. */
	113	break;
	114	case 3:
b3ad3d88	115	auth_debug_add("Found garbage in %.100s.", filename);
5260325f	116	continue;
	117	default:
	118	/* Weird... */
	119	continue;
	120	}
	121
	122	host = hostbuf;
	123	user = userbuf;
	124	negated = 0;
	125
	126	/* Process negated host names, or positive netgroups. */
	127	if (host[0] == '-') {
	128	negated = 1;
	129	host++;
	130	} else if (host[0] == '+')
	131	host++;
	132
	133	if (user[0] == '-') {
	134	negated = 1;
	135	user++;
	136	} else if (user[0] == '+')
	137	user++;
	138
	139	/* Check for empty host/user names (particularly '+'). */
	140	if (!host[0] \|\| !user[0]) {
	141	/* We come here if either was '+' or '-'. */
b3ad3d88	142	auth_debug_add("Ignoring wild host/user names in %.100s.",
b3ad3d88	143	filename);
5260325f	144	continue;
	145	}
	146	/* Verify that host name matches. */
	147	if (host[0] == '@') {
	148	if (!innetgr(host + 1, hostname, NULL, NULL) &&
	149	!innetgr(host + 1, ipaddr, NULL, NULL))
	150	continue;
	151	} else if (strcasecmp(host, hostname) && strcmp(host, ipaddr) != 0)
	152	continue; /* Different hostname. */
	153
	154	/* Verify that user name matches. */
	155	if (user[0] == '@') {
	156	if (!innetgr(user + 1, NULL, client_user, NULL))
	157	continue;
	158	} else if (strcmp(user, client_user) != 0)
	159	continue; /* Different username. */
	160
	161	/* Found the user and host. */
	162	fclose(f);
	163
	164	/* If the entry was negated, deny access. */
	165	if (negated) {
b3ad3d88	166	auth_debug_add("Matched negative entry in %.100s.",
4e2e5cfd	167	filename);
5260325f	168	return 0;
	169	}
	170	/* Accept authentication. */
	171	return 1;
8efc0c15	172	}
8efc0c15	173
5260325f	174	/* Authentication using this file denied. */
	175	fclose(f);
	176	return 0;
8efc0c15	177	}
8efc0c15	178
aa3378df	179	/*
	180	* Tries to authenticate the user using the .shosts or .rhosts file. Returns
	181	* true if authentication succeeds. If ignore_rhosts is true, only
	182	* /etc/hosts.equiv will be considered (.rhosts and .shosts are ignored).
	183	*/
8efc0c15	184
6ae2364d	185	int
5260325f	186	auth_rhosts(struct passwd pw, const char client_user)
8efc0c15	187	{
5260325f	188	const char hostname, ipaddr;
8002af61	189
c5a7d788	190	hostname = get_canonical_hostname(options.use_dns);
8002af61	191	ipaddr = get_remote_ipaddr();
b3ad3d88	192	return auth_rhosts2(pw, client_user, hostname, ipaddr);
8002af61	193	}
8002af61	194
b3ad3d88	195	static int
b3ad3d88	196	auth_rhosts2_raw(struct passwd pw, const char client_user, const char *hostname,
8002af61	197	const char *ipaddr)
	198	{
	199	char buf[1024];
5260325f	200	struct stat st;
5260325f	201	static const char *rhosts_files[] = {".shosts", ".rhosts", NULL};
1e3b8b07	202	u_int rhosts_file_index;
5260325f	203
8002af61	204	debug2("auth_rhosts2: clientuser %s hostname %s ipaddr %s",
	205	client_user, hostname, ipaddr);
	206
5260325f	207	/* Switch to the user's uid. */
63bd8c36	208	temporarily_use_uid(pw);
aa3378df	209	/*
	210	* Quick check: if the user has no .shosts or .rhosts files, return
	211	* failure immediately without doing costly lookups from name
	212	* servers.
	213	*/
5260325f	214	for (rhosts_file_index = 0; rhosts_files[rhosts_file_index];
184eed6a	215	rhosts_file_index++) {
5260325f	216	/* Check users .rhosts or .shosts. */
	217	snprintf(buf, sizeof buf, "%.500s/%.100s",
	218	pw->pw_dir, rhosts_files[rhosts_file_index]);
	219	if (stat(buf, &st) >= 0)
	220	break;
8efc0c15	221	}
5260325f	222	/* Switch back to privileged uid. */
	223	restore_uid();
	224
	225	/* Deny if The user has no .shosts or .rhosts file and there are no system-wide files. */
	226	if (!rhosts_files[rhosts_file_index] &&
42f11eb2	227	stat(_PATH_RHOSTS_EQUIV, &st) < 0 &&
42f11eb2	228	stat(_PATH_SSH_HOSTS_EQUIV, &st) < 0)
5260325f	229	return 0;
5260325f	230
5260325f	231	/* If not logging in as superuser, try /etc/hosts.equiv and shosts.equiv. */
5260325f	232	if (pw->pw_uid != 0) {
184eed6a	233	if (check_rhosts_file(_PATH_RHOSTS_EQUIV, hostname, ipaddr,
184eed6a	234	client_user, pw->pw_name)) {
b3ad3d88	235	auth_debug_add("Accepted for %.100s [%.100s] by /etc/hosts.equiv.",
184eed6a	236	hostname, ipaddr);
5260325f	237	return 1;
5260325f	238	}
184eed6a	239	if (check_rhosts_file(_PATH_SSH_HOSTS_EQUIV, hostname, ipaddr,
184eed6a	240	client_user, pw->pw_name)) {
b3ad3d88	241	auth_debug_add("Accepted for %.100s [%.100s] by %.100s.",
184eed6a	242	hostname, ipaddr, _PATH_SSH_HOSTS_EQUIV);
5260325f	243	return 1;
5260325f	244	}
8efc0c15	245	}
aa3378df	246	/*
	247	* Check that the home directory is owned by root or the user, and is
	248	* not group or world writable.
	249	*/
5260325f	250	if (stat(pw->pw_dir, &st) < 0) {
bbe88b6d	251	logit("Rhosts authentication refused for %.100s: "
b3ad3d88	252	"no home directory %.200s", pw->pw_name, pw->pw_dir);
	253	auth_debug_add("Rhosts authentication refused for %.100s: "
	254	"no home directory %.200s", pw->pw_name, pw->pw_dir);
5260325f	255	return 0;
8efc0c15	256	}
5260325f	257	if (options.strict_modes &&
5260325f	258	((st.st_uid != 0 && st.st_uid != pw->pw_uid) \|\|
184eed6a	259	(st.st_mode & 022) != 0)) {
bbe88b6d	260	logit("Rhosts authentication refused for %.100s: "
b3ad3d88	261	"bad ownership or modes for home directory.", pw->pw_name);
	262	auth_debug_add("Rhosts authentication refused for %.100s: "
	263	"bad ownership or modes for home directory.", pw->pw_name);
5260325f	264	return 0;
8efc0c15	265	}
5260325f	266	/* Temporarily use the user's uid. */
63bd8c36	267	temporarily_use_uid(pw);
5260325f	268
	269	/* Check all .rhosts files (currently .shosts and .rhosts). */
	270	for (rhosts_file_index = 0; rhosts_files[rhosts_file_index];
184eed6a	271	rhosts_file_index++) {
5260325f	272	/* Check users .rhosts or .shosts. */
	273	snprintf(buf, sizeof buf, "%.500s/%.100s",
	274	pw->pw_dir, rhosts_files[rhosts_file_index]);
	275	if (stat(buf, &st) < 0)
	276	continue;
	277
aa3378df	278	/*
	279	* Make sure that the file is either owned by the user or by
	280	* root, and make sure it is not writable by anyone but the
	281	* owner. This is to help avoid novices accidentally
	282	* allowing access to their account by anyone.
	283	*/
5260325f	284	if (options.strict_modes &&
5260325f	285	((st.st_uid != 0 && st.st_uid != pw->pw_uid) \|\|
184eed6a	286	(st.st_mode & 022) != 0)) {
bbe88b6d	287	logit("Rhosts authentication refused for %.100s: bad modes for %.200s",
5260325f	288	pw->pw_name, buf);
b3ad3d88	289	auth_debug_add("Bad file modes for %.200s", buf);
5260325f	290	continue;
	291	}
	292	/* Check if we have been configured to ignore .rhosts and .shosts files. */
	293	if (options.ignore_rhosts) {
b3ad3d88	294	auth_debug_add("Server has been configured to ignore %.100s.",
b3ad3d88	295	rhosts_files[rhosts_file_index]);
5260325f	296	continue;
	297	}
	298	/* Check if authentication is permitted by the file. */
	299	if (check_rhosts_file(buf, hostname, ipaddr, client_user, pw->pw_name)) {
b3ad3d88	300	auth_debug_add("Accepted by %.100s.",
b3ad3d88	301	rhosts_files[rhosts_file_index]);
5260325f	302	/* Restore the privileged uid. */
5260325f	303	restore_uid();
b3ad3d88	304	auth_debug_add("Accepted host %s ip %s client_user %s server_user %s",
b3ad3d88	305	hostname, ipaddr, client_user, pw->pw_name);
5260325f	306	return 1;
5260325f	307	}
8efc0c15	308	}
8efc0c15	309
5260325f	310	/* Restore the privileged uid. */
	311	restore_uid();
	312	return 0;
8efc0c15	313	}
b3ad3d88	314
	315	int
	316	auth_rhosts2(struct passwd pw, const char client_user, const char *hostname,
	317	const char *ipaddr)
	318	{
	319	int ret;
	320
	321	auth_debug_reset();
	322	ret = auth_rhosts2_raw(pw, client_user, hostname, ipaddr);
	323	if (!use_privsep)
	324	auth_debug_send();
	325	return ret;
	326	}