auth-sia.c revision 113908 
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
25#include "includes.h"
26
27#ifdef HAVE_OSF_SIA
28#include "ssh.h"
29#include "auth.h"
30#include "auth-sia.h"
31#include "log.h"
32#include "servconf.h"
33#include "canohost.h"
34
35#include <sia.h>
36#include <siad.h>
37#include <pwd.h>
38#include <signal.h>
39#include <setjmp.h>
40#include <sys/resource.h>
41#include <unistd.h>
42#include <string.h>
43
44extern ServerOptions options;
45extern int saved_argc;
46extern char **saved_argv;
47
48int
49auth_sia_password(Authctxt *authctxt, char *pass)
50{
51	int ret;
52	SIAENTITY *ent = NULL;
53	const char *host;
54
55	host = get_canonical_hostname(options.verify_reverse_mapping);
56
57	if (!authctxt->user || !pass || pass[0] == '\0')
58		return(0);
59
60	if (sia_ses_init(&ent, saved_argc, saved_argv, host, authctxt->user,
61	    NULL, 0, NULL) != SIASUCCESS)
62		return(0);
63
64	if ((ret = sia_ses_authent(NULL, pass, ent)) != SIASUCCESS) {
65		error("Couldn't authenticate %s from %s", authctxt->user,
66		    host);
67		if (ret & SIASTOP)
68			sia_ses_release(&ent);
69		return(0);
70	}
71
72	sia_ses_release(&ent);
73
74	return(1);
75}
76
77void
78session_setup_sia(struct passwd *pw, char *tty)
79{
80	SIAENTITY *ent = NULL;
81	const char *host;
82
83	host = get_canonical_hostname(options.verify_reverse_mapping);
84
85	if (sia_ses_init(&ent, saved_argc, saved_argv, host, pw->pw_name, tty,
86	    0, NULL) != SIASUCCESS)
87		fatal("sia_ses_init failed");
88
89	if (sia_make_entity_pwd(pw, ent) != SIASUCCESS) {
90		sia_ses_release(&ent);
91		fatal("sia_make_entity_pwd failed");
92	}
93
94	ent->authtype = SIA_A_NONE;
95	if (sia_ses_estab(sia_collect_trm, ent) != SIASUCCESS)
96		fatal("Couldn't establish session for %s from %s",
97		    pw->pw_name, host);
98
99	if (sia_ses_launch(sia_collect_trm, ent) != SIASUCCESS)
100		fatal("Couldn't launch session for %s from %s", pw->pw_name,
101		    host);
102
103	sia_ses_release(&ent);
104
105	if (setreuid(geteuid(), geteuid()) < 0)
106		fatal("setreuid: %s", strerror(errno));
107}
108
109#endif /* HAVE_OSF_SIA */
110