[gssapi-openssh.git] / openssh / auth-sia.c

/*
 * Copyright (c) 2002 Chris Adams.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "includes.h"

#ifdef HAVE_OSF_SIA
#include <sia.h>
#include <siad.h>
#include <pwd.h>
#include <signal.h>
#include <setjmp.h>
#include <sys/resource.h>
#include <unistd.h>
#include <stdarg.h>
#include <string.h>
#include <sys/types.h>
#include <sys/security.h>
#include <prot.h>
#include <time.h>

#include "ssh.h"
#include "key.h"
#include "hostfile.h"
#include "auth.h"
#include "auth-sia.h"
#include "log.h"
#include "servconf.h"
#include "canohost.h"
#include "uidswap.h"

extern ServerOptions options;
extern int saved_argc;
extern char **saved_argv;

static int
sia_password_change_required(const char *user)
{
	struct es_passwd *acct;
	time_t pw_life;
	time_t pw_date;

	set_auth_parameters(saved_argc, saved_argv);

	if ((acct = getespwnam(user)) == NULL) {
		error("Couldn't access protected database entry for %s", user);
		endprpwent();
		return (0);
	}

	/* If forced password change flag is set, honor it */
	if (acct->uflg->fg_psw_chg_reqd && acct->ufld->fd_psw_chg_reqd) {
		endprpwent();
		return (1);
	}

	/* Obtain password lifetime; if none, it can't have expired */
	if (acct->uflg->fg_expire)
		pw_life = acct->ufld->fd_expire;
	else if (acct->sflg->fg_expire)
		pw_life = acct->sfld->fd_expire;
	else {
		endprpwent();
		return (0);
	}

	/* Offset from last change; if none, it must be expired */
	if (acct->uflg->fg_schange)
		pw_date = acct->ufld->fd_schange + pw_life;
	else {
		endprpwent();
		return (1);
	}

	endprpwent();

	/* If expiration date is prior to now, change password */
	
	return (pw_date <= time((time_t *) NULL));
}

int
sys_auth_passwd(Authctxt *authctxt, const char *pass)
{
	int ret;
	SIAENTITY *ent = NULL;
	const char *host;

	host = get_canonical_hostname(options.use_dns);

	if (!authctxt->user || pass == NULL || pass[0] == '\0')
		return (0);

	if (sia_ses_init(&ent, saved_argc, saved_argv, host, authctxt->user,
	    NULL, 0, NULL) != SIASUCCESS)
		return (0);

	if ((ret = sia_ses_authent(NULL, pass, ent)) != SIASUCCESS) {
		error("Couldn't authenticate %s from %s",
		    authctxt->user, host);
		if (ret & SIASTOP)
			sia_ses_release(&ent);

		return (0);
	}

	sia_ses_release(&ent);

	authctxt->force_pwchange = sia_password_change_required(
		authctxt->user);

	return (1);
}

void
session_setup_sia(struct passwd *pw, char *tty)
{
	SIAENTITY *ent = NULL;
	const char *host;

	host = get_canonical_hostname(options.use_dns);

	if (sia_ses_init(&ent, saved_argc, saved_argv, host, pw->pw_name,
	    tty, 0, NULL) != SIASUCCESS)
		fatal("sia_ses_init failed");

	if (sia_make_entity_pwd(pw, ent) != SIASUCCESS) {
		sia_ses_release(&ent);
		fatal("sia_make_entity_pwd failed");
	}

	ent->authtype = SIA_A_NONE;
	if (sia_ses_estab(sia_collect_trm, ent) != SIASUCCESS)
		fatal("Couldn't establish session for %s from %s",
		    pw->pw_name, host);

	if (sia_ses_launch(sia_collect_trm, ent) != SIASUCCESS)
		fatal("Couldn't launch session for %s from %s",
		    pw->pw_name, host);

	sia_ses_release(&ent);

	setuid(0);
	permanently_set_uid(pw);
}

#endif /* HAVE_OSF_SIA */
Commit	Line	Data
700318f3	1	/*
	2	* Copyright (c) 2002 Chris Adams. All rights reserved.
	3	*
	4	* Redistribution and use in source and binary forms, with or without
	5	* modification, are permitted provided that the following conditions
	6	* are met:
	7	* 1. Redistributions of source code must retain the above copyright
	8	* notice, this list of conditions and the following disclaimer.
	9	* 2. Redistributions in binary form must reproduce the above copyright
	10	* notice, this list of conditions and the following disclaimer in the
	11	* documentation and/or other materials provided with the distribution.
	12	*
	13	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	14	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	15	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	16	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	17	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	18	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	19	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	20	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	21	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	22	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	23	*/
	24
3c0ef626	25	#include "includes.h"
	26
	27	#ifdef HAVE_OSF_SIA
3c0ef626	28	#include <sia.h>
	29	#include <siad.h>
	30	#include <pwd.h>
	31	#include <signal.h>
	32	#include <setjmp.h>
	33	#include <sys/resource.h>
	34	#include <unistd.h>
9108f8d9	35	#include <stdarg.h>
3c0ef626	36	#include <string.h>
22616013	37	#include <sys/types.h>
	38	#include <sys/security.h>
	39	#include <prot.h>
	40	#include <time.h>
3c0ef626	41
9108f8d9	42	#include "ssh.h"
	43	#include "key.h"
	44	#include "hostfile.h"
	45	#include "auth.h"
	46	#include "auth-sia.h"
	47	#include "log.h"
	48	#include "servconf.h"
	49	#include "canohost.h"
	50	#include "uidswap.h"
	51
3c0ef626	52	extern ServerOptions options;
	53	extern int saved_argc;
	54	extern char **saved_argv;
	55
22616013	56	static int
	57	sia_password_change_required(const char *user)
	58	{
	59	struct es_passwd *acct;
	60	time_t pw_life;
	61	time_t pw_date;
	62
	63	set_auth_parameters(saved_argc, saved_argv);
	64
	65	if ((acct = getespwnam(user)) == NULL) {
	66	error("Couldn't access protected database entry for %s", user);
	67	endprpwent();
	68	return (0);
	69	}
	70
	71	/* If forced password change flag is set, honor it */
	72	if (acct->uflg->fg_psw_chg_reqd && acct->ufld->fd_psw_chg_reqd) {
	73	endprpwent();
	74	return (1);
	75	}
	76
	77	/* Obtain password lifetime; if none, it can't have expired */
	78	if (acct->uflg->fg_expire)
	79	pw_life = acct->ufld->fd_expire;
	80	else if (acct->sflg->fg_expire)
	81	pw_life = acct->sfld->fd_expire;
	82	else {
	83	endprpwent();
	84	return (0);
	85	}
	86
	87	/* Offset from last change; if none, it must be expired */
	88	if (acct->uflg->fg_schange)
	89	pw_date = acct->ufld->fd_schange + pw_life;
	90	else {
	91	endprpwent();
	92	return (1);
	93	}
	94
	95	endprpwent();
	96
	97	/* If expiration date is prior to now, change password */
	98
	99	return (pw_date <= time((time_t *) NULL));
	100	}
	101
3c0ef626	102	int
dec6d9fe	103	sys_auth_passwd(Authctxt authctxt, const char pass)
3c0ef626	104	{
	105	int ret;
	106	SIAENTITY *ent = NULL;
	107	const char *host;
	108
0fff78ff	109	host = get_canonical_hostname(options.use_dns);
3c0ef626	110
0fff78ff	111	if (!authctxt->user \|\| pass == NULL \|\| pass[0] == '\0')
0fff78ff	112	return (0);
3c0ef626	113
6a9b3198	114	if (sia_ses_init(&ent, saved_argc, saved_argv, host, authctxt->user,
6a9b3198	115	NULL, 0, NULL) != SIASUCCESS)
0fff78ff	116	return (0);
3c0ef626	117
3c0ef626	118	if ((ret = sia_ses_authent(NULL, pass, ent)) != SIASUCCESS) {
0fff78ff	119	error("Couldn't authenticate %s from %s",
0fff78ff	120	authctxt->user, host);
3c0ef626	121	if (ret & SIASTOP)
3c0ef626	122	sia_ses_release(&ent);
0fff78ff	123
0fff78ff	124	return (0);
3c0ef626	125	}
	126
	127	sia_ses_release(&ent);
	128
22616013	129	authctxt->force_pwchange = sia_password_change_required(
	130	authctxt->user);
	131
0fff78ff	132	return (1);
3c0ef626	133	}
	134
	135	void
6a9b3198	136	session_setup_sia(struct passwd pw, char tty)
3c0ef626	137	{
3c0ef626	138	SIAENTITY *ent = NULL;
	139	const char *host;
	140
0fff78ff	141	host = get_canonical_hostname(options.use_dns);
3c0ef626	142
cdd66111	143	if (sia_ses_init(&ent, saved_argc, saved_argv, host, pw->pw_name,
0fff78ff	144	tty, 0, NULL) != SIASUCCESS)
700318f3	145	fatal("sia_ses_init failed");
3c0ef626	146
3c0ef626	147	if (sia_make_entity_pwd(pw, ent) != SIASUCCESS) {
3c0ef626	148	sia_ses_release(&ent);
700318f3	149	fatal("sia_make_entity_pwd failed");
3c0ef626	150	}
	151
	152	ent->authtype = SIA_A_NONE;
6a9b3198	153	if (sia_ses_estab(sia_collect_trm, ent) != SIASUCCESS)
	154	fatal("Couldn't establish session for %s from %s",
	155	pw->pw_name, host);
3c0ef626	156
6a9b3198	157	if (sia_ses_launch(sia_collect_trm, ent) != SIASUCCESS)
0fff78ff	158	fatal("Couldn't launch session for %s from %s",
0fff78ff	159	pw->pw_name, host);
cdd66111	160
3c0ef626	161	sia_ses_release(&ent);
3c0ef626	162
cdd66111	163	setuid(0);
cdd66111	164	permanently_set_uid(pw);
3c0ef626	165	}
	166
	167	#endif /* HAVE_OSF_SIA */