xref: /freebsd/crypto/openssh/auth-sia.c (revision d0ba1baed3f6e4936a0c1b89c25f6c59168ef6de)
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 <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>
35 #include <stdarg.h>
36 #include <string.h>
37 
38 #include "ssh.h"
39 #include "ssh_api.h"
40 #include "key.h"
41 #include "hostfile.h"
42 #include "auth.h"
43 #include "auth-sia.h"
44 #include "log.h"
45 #include "servconf.h"
46 #include "canohost.h"
47 #include "uidswap.h"
48 
49 extern ServerOptions options;
50 extern int saved_argc;
51 extern char **saved_argv;
52 
53 int
54 sys_auth_passwd(struct ssh *ssh, const char *pass)
55 {
56 	int ret;
57 	SIAENTITY *ent = NULL;
58 	const char *host;
59 	Authctxt *authctxt = ssh->authctxt;
60 
61 	host = get_canonical_hostname(options.use_dns);
62 
63 	if (!authctxt->user || pass == NULL || pass[0] == '\0')
64 		return (0);
65 
66 	if (sia_ses_init(&ent, saved_argc, saved_argv, host, authctxt->user,
67 	    NULL, 0, NULL) != SIASUCCESS)
68 		return (0);
69 
70 	if ((ret = sia_ses_authent(NULL, pass, ent)) != SIASUCCESS) {
71 		error("Couldn't authenticate %s from %s",
72 		    authctxt->user, host);
73 		if (ret & SIASTOP)
74 			sia_ses_release(&ent);
75 
76 		return (0);
77 	}
78 
79 	sia_ses_release(&ent);
80 
81 	return (1);
82 }
83 
84 void
85 session_setup_sia(struct passwd *pw, char *tty)
86 {
87 	SIAENTITY *ent = NULL;
88 	const char *host;
89 
90 	host = get_canonical_hostname(options.use_dns);
91 
92 	if (sia_ses_init(&ent, saved_argc, saved_argv, host, pw->pw_name,
93 	    tty, 0, NULL) != SIASUCCESS)
94 		fatal("sia_ses_init failed");
95 
96 	if (sia_make_entity_pwd(pw, ent) != SIASUCCESS) {
97 		sia_ses_release(&ent);
98 		fatal("sia_make_entity_pwd failed");
99 	}
100 
101 	ent->authtype = SIA_A_NONE;
102 	if (sia_ses_estab(sia_collect_trm, ent) != SIASUCCESS)
103 		fatal("Couldn't establish session for %s from %s",
104 		    pw->pw_name, host);
105 
106 	if (sia_ses_launch(sia_collect_trm, ent) != SIASUCCESS)
107 		fatal("Couldn't launch session for %s from %s",
108 		    pw->pw_name, host);
109 
110 	sia_ses_release(&ent);
111 
112 	setuid(0);
113 	permanently_set_uid(pw);
114 }
115 
116 #endif /* HAVE_OSF_SIA */
117