xref: /illumos-gate/usr/src/lib/libslp/clib/SAAdvert.c (revision 1da57d55)

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 1999 by Sun Microsystems, Inc.
 * All rights reserved.
 */

/*
 * SAAdverts are used internally by libslp to discover scopes in the
 * absence of configured scopes and scopes found by active and
 * passive DA discovery. They can also be solicited by SLPFindSrv()
 * and SLPFindAttr calls with the "service:service-agent" type.
 * slp_unpackSAAdvert() unpacks a SAAdvert and returns SA info.
 */

#include <stdio.h>
#include <slp-internal.h>

SLPError slp_unpackSAAdvert(char *reply, char **surl,
				char **scopes, char **attrs) {
	SLPError err = SLP_OK;
	size_t off, len;
	/* authentication components */
	struct iovec iov[3];
	size_t tmp_off;
	int auth_cnt;
	size_t abLen = 0;

	*surl = *scopes = *attrs = NULL;

	len = slp_get_length(reply);
	off = SLP_HDRLEN + slp_get_langlen(reply);

	/* service URL */
	iov[0].iov_base = reply + off;
	tmp_off = off;
	if ((err = slp_get_string(reply, len, &off, surl)) != SLP_OK) {
	    goto fail;
	}
	iov[0].iov_len = off - tmp_off;

	/* scope list */
	iov[2].iov_base = reply + off;
	tmp_off = off;
	if ((err = slp_get_string(reply, len, &off, scopes)) != SLP_OK) {
	    goto fail;
	}
	iov[2].iov_len = off - tmp_off;

	/* attributes */
	iov[1].iov_base = reply + off;
	tmp_off = off;
	if ((err = slp_get_string(reply, len, &off, attrs)) != SLP_OK) {
	    goto fail;
	}
	iov[1].iov_len = off - tmp_off;

	/* auth blocks */
	if ((err = slp_get_byte(reply, len, &off, &auth_cnt)) != SLP_OK) {
	    goto fail;
	}
	if (slp_get_security_on() || auth_cnt > 0) {
	    if ((err = slp_verify(iov, 3,
				    reply + off,
				    len - off,
				    auth_cnt,
				    &abLen)) != SLP_OK) {
		goto fail;
	    }
	}

	return (SLP_OK);

fail:
	if (*surl) free(*surl);
	if (*scopes) free(*scopes);
	if (*attrs) free(*attrs);

	return (err);
}