usr.sbin/sdpd/srr.c

   1 /* $NetBSD: srr.c,v 1.1 2006/06/19 15:44:56 gdamore Exp $ */
   2 /* $DragonFly: src/usr.sbin/sdpd/srr.c,v 1.1 2008/01/06 21:51:30 hasso Exp $ */
   3
   4 /*
   5  * srr.c
   6  *
   7  * Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com>
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  * $Id: srr.c,v 1.2 2007/11/30 07:39:37 griffin Exp $
  32  * $FreeBSD: src/usr.sbin/bluetooth/sdpd/srr.c,v 1.2 2005/12/06 17:56:36 emax Exp $
  33  */
  34
  35 #include <sys/queue.h>
  36 #include <sys/uio.h>
  37 #include <netinet/in.h>
  38 #include <arpa/inet.h>
  39 #include <assert.h>
  40 #include <bluetooth.h>
  41 #include <errno.h>
  42 #include <sdp.h>
  43 #include <string.h>
  44 #include "profile.h"
  45 #include "provider.h"
  46 #include "server.h"
  47
  48 /*
  49  * Prepare Service Register response
  50  */
  51
  52 int32_t
  53 server_prepare_service_register_response(server_p srv, int32_t fd)
  54 {
  55         uint8_t const   *req = srv->req + sizeof(sdp_pdu_t);
  56         uint8_t const   *req_end = req + ((sdp_pdu_p)(srv->req))->len;
  57         uint8_t         *rsp = srv->fdidx[fd].rsp;
  58
  59         profile_t       *profile = NULL;
  60         provider_t      *provider = NULL;
  61         bdaddr_t const  *bdaddr = NULL;
  62         int32_t          uuid;
  63
  64         /*
  65          * Minimal Service Register Request
  66          *
  67          * value16      - uuid 2 bytes
  68          * bdaddr       - BD_ADDR 6 bytes
  69          */
  70
  71         if (!srv->fdidx[fd].control ||
  72             !srv->fdidx[fd].priv || req_end - req < 8)
  73                 return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
  74
  75         /* Get ServiceClass UUID */
  76         SDP_GET16(uuid, req);
  77
  78         /* Get BD_ADDR */
  79         bdaddr = (bdaddr_t const *) req;
  80         req += sizeof(*bdaddr);
  81
  82         /* Lookup profile descriptror */
  83         profile = profile_get_descriptor(uuid);
  84         if (profile == NULL)
  85                 return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
  86
  87         /* Validate user data */
  88         if (req_end - req < profile->dsize ||
  89             profile->valid == NULL ||
  90             (profile->valid)(req, req_end - req) == 0)
  91                 return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
  92
  93         /* Register provider */
  94         provider = provider_register(profile, bdaddr, fd, req, req_end - req);
  95         if (provider == NULL)
  96                 return (SDP_ERROR_CODE_INSUFFICIENT_RESOURCES);
  97
  98         SDP_PUT16(0, rsp);
  99         SDP_PUT32(provider->handle, rsp);
 100
 101         /* Set reply size */
 102         srv->fdidx[fd].rsp_limit = srv->fdidx[fd].omtu - sizeof(sdp_pdu_t);
 103         srv->fdidx[fd].rsp_size = rsp - srv->fdidx[fd].rsp;
 104         srv->fdidx[fd].rsp_cs = 0;
 105
 106         return (0);
 107 }
 108
 109 /*
 110  * Send Service Register Response
 111  */
 112
 113 int32_t
 114 server_send_service_register_response(server_p srv, int32_t fd)
 115 {
 116         struct iovec    iov[2];
 117         sdp_pdu_t       pdu;
 118         int32_t         size;
 119
 120         assert(srv->fdidx[fd].rsp_size < srv->fdidx[fd].rsp_limit);
 121
 122         pdu.pid = SDP_PDU_ERROR_RESPONSE;
 123         pdu.tid = ((sdp_pdu_p)(srv->req))->tid;
 124         pdu.len = htons(srv->fdidx[fd].rsp_size);
 125
 126         iov[0].iov_base = &pdu;
 127         iov[0].iov_len = sizeof(pdu);
 128
 129         iov[1].iov_base = srv->fdidx[fd].rsp;
 130         iov[1].iov_len = srv->fdidx[fd].rsp_size;
 131
 132         do {
 133                 size = writev(fd, (struct iovec const *) &iov, sizeof(iov)/sizeof(iov[0]));
 134         } while (size < 0 && errno == EINTR);
 135
 136         srv->fdidx[fd].rsp_cs = 0;
 137         srv->fdidx[fd].rsp_size = 0;
 138         srv->fdidx[fd].rsp_limit = 0;
 139
 140         return ((size < 0)? errno : 0);
 141 }