usr/src/lib/libslp/clib/SAAdvert.c

   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 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 /*
  30  * SAAdverts are used internally by libslp to discover scopes in the
  31  * absence of configured scopes and scopes found by active and
  32  * passive DA discovery. They can also be solicited by SLPFindSrv()
  33  * and SLPFindAttr calls with the "service:service-agent" type.
  34  * slp_unpackSAAdvert() unpacks a SAAdvert and returns SA info.
  35  */
  36
  37 #include <stdio.h>
  38 #include <slp-internal.h>
  39
  40 SLPError slp_unpackSAAdvert(char *reply, char **surl,
  41                                 char **scopes, char **attrs) {
  42         SLPError err = SLP_OK;
  43         size_t off, len;
  44         /* authentication components */
  45         struct iovec iov[3];
  46         size_t tmp_off;
  47         int auth_cnt;
  48         size_t abLen = 0;
  49
  50         *surl = *scopes = *attrs = NULL;
  51
  52         len = slp_get_length(reply);
  53         off = SLP_HDRLEN + slp_get_langlen(reply);
  54
  55         /* service URL */
  56         iov[0].iov_base = reply + off;
  57         tmp_off = off;
  58         if ((err = slp_get_string(reply, len, &off, surl)) != SLP_OK) {
  59             goto fail;
  60         }
  61         iov[0].iov_len = off - tmp_off;
  62
  63         /* scope list */
  64         iov[2].iov_base = reply + off;
  65         tmp_off = off;
  66         if ((err = slp_get_string(reply, len, &off, scopes)) != SLP_OK) {
  67             goto fail;
  68         }
  69         iov[2].iov_len = off - tmp_off;
  70
  71         /* attributes */
  72         iov[1].iov_base = reply + off;
  73         tmp_off = off;
  74         if ((err = slp_get_string(reply, len, &off, attrs)) != SLP_OK) {
  75             goto fail;
  76         }
  77         iov[1].iov_len = off - tmp_off;
  78
  79         /* auth blocks */
  80         if ((err = slp_get_byte(reply, len, &off, &auth_cnt)) != SLP_OK) {
  81             goto fail;
  82         }
  83         if (slp_get_security_on() || auth_cnt > 0) {
  84             if ((err = slp_verify(iov, 3,
  85                                     reply + off,
  86                                     len - off,
  87                                     auth_cnt,
  88                                     &abLen)) != SLP_OK) {
  89                 goto fail;
  90             }
  91         }
  92
  93         return (SLP_OK);
  94
  95 fail:
  96         if (*surl) free(*surl);
  97         if (*scopes) free(*scopes);
  98         if (*attrs) free(*attrs);
  99
 100         return (err);
 101 }