xref: /illumos-gate/usr/src/lib/libslp/clib/SAAdvert.c (revision 012e6ce759c490003aed29439cc47d3d73a99ad3)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright (c) 1999 by Sun Microsystems, Inc.
24  * All rights reserved.
25  */
26 
27 /*
28  * SAAdverts are used internally by libslp to discover scopes in the
29  * absence of configured scopes and scopes found by active and
30  * passive DA discovery. They can also be solicited by SLPFindSrv()
31  * and SLPFindAttr calls with the "service:service-agent" type.
32  * slp_unpackSAAdvert() unpacks a SAAdvert and returns SA info.
33  */
34 
35 #include <stdio.h>
36 #include <slp-internal.h>
37 
38 SLPError slp_unpackSAAdvert(char *reply, char **surl,
39 				char **scopes, char **attrs) {
40 	SLPError err = SLP_OK;
41 	size_t off, len;
42 	/* authentication components */
43 	struct iovec iov[3];
44 	size_t tmp_off;
45 	int auth_cnt;
46 	size_t abLen = 0;
47 
48 	*surl = *scopes = *attrs = NULL;
49 
50 	len = slp_get_length(reply);
51 	off = SLP_HDRLEN + slp_get_langlen(reply);
52 
53 	/* service URL */
54 	iov[0].iov_base = reply + off;
55 	tmp_off = off;
56 	if ((err = slp_get_string(reply, len, &off, surl)) != SLP_OK) {
57 	    goto fail;
58 	}
59 	iov[0].iov_len = off - tmp_off;
60 
61 	/* scope list */
62 	iov[2].iov_base = reply + off;
63 	tmp_off = off;
64 	if ((err = slp_get_string(reply, len, &off, scopes)) != SLP_OK) {
65 	    goto fail;
66 	}
67 	iov[2].iov_len = off - tmp_off;
68 
69 	/* attributes */
70 	iov[1].iov_base = reply + off;
71 	tmp_off = off;
72 	if ((err = slp_get_string(reply, len, &off, attrs)) != SLP_OK) {
73 	    goto fail;
74 	}
75 	iov[1].iov_len = off - tmp_off;
76 
77 	/* auth blocks */
78 	if ((err = slp_get_byte(reply, len, &off, &auth_cnt)) != SLP_OK) {
79 	    goto fail;
80 	}
81 	if (slp_get_security_on() || auth_cnt > 0) {
82 	    if ((err = slp_verify(iov, 3,
83 				    reply + off,
84 				    len - off,
85 				    auth_cnt,
86 				    &abLen)) != SLP_OK) {
87 		goto fail;
88 	    }
89 	}
90 
91 	return (SLP_OK);
92 
93 fail:
94 	if (*surl) free(*surl);
95 	if (*scopes) free(*scopes);
96 	if (*attrs) free(*attrs);
97 
98 	return (err);
99 }
100