xref: /freebsd/usr.sbin/bluetooth/sdpd/srr.c (revision 907b59d76938e654f0d040a888e8dfca3de1e222)
1 /*
2  * srr.c
3  *
4  * Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  * $Id: srr.c,v 1.1 2004/01/13 01:54:39 max Exp $
29  * $FreeBSD$
30  */
31 
32 #include <sys/queue.h>
33 #include <sys/uio.h>
34 #include <netinet/in.h>
35 #include <arpa/inet.h>
36 #include <assert.h>
37 #define L2CAP_SOCKET_CHECKED
38 #include <bluetooth.h>
39 #include <errno.h>
40 #include <sdp.h>
41 #include <string.h>
42 #include "profile.h"
43 #include "provider.h"
44 #include "server.h"
45 
46 /*
47  * Prepare Service Register response
48  */
49 
50 int32_t
51 server_prepare_service_register_response(server_p srv, int32_t fd)
52 {
53 	uint8_t const	*req = srv->req + sizeof(sdp_pdu_t);
54 	uint8_t const	*req_end = req + ((sdp_pdu_p)(srv->req))->len;
55 	uint8_t		*rsp = srv->fdidx[fd].rsp;
56 
57 	profile_t	*profile = NULL;
58 	provider_t	*provider = NULL;
59 	bdaddr_t	*bdaddr = NULL;
60 	int32_t		 uuid;
61 
62 	/*
63 	 * Minimal Service Register Request
64 	 *
65 	 * value16	- uuid 2 bytes
66 	 * bdaddr	- BD_ADDR 6 bytes
67 	 */
68 
69 	if (!srv->fdidx[fd].control ||
70 	    !srv->fdidx[fd].priv || req_end - req < 8)
71 		return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
72 
73 	/* Get ServiceClass UUID */
74 	SDP_GET16(uuid, req);
75 
76 	/* Get BD_ADDR */
77 	bdaddr = (bdaddr_p) req;
78 	req += sizeof(*bdaddr);
79 
80 	/* Lookup profile descriptror */
81 	profile = profile_get_descriptor(uuid);
82 	if (profile == NULL)
83 		return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
84 
85 	/* Validate user data */
86 	if (req_end - req < profile->dsize ||
87 	    profile->valid == NULL ||
88 	    (profile->valid)(req, req_end - req) == 0)
89 		return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
90 
91 	/* Register provider */
92 	provider = provider_register(profile, bdaddr, fd, req, req_end - req);
93 	if (provider == NULL)
94 		return (SDP_ERROR_CODE_INSUFFICIENT_RESOURCES);
95 
96 	SDP_PUT16(0, rsp);
97 	SDP_PUT32(provider->handle, rsp);
98 
99 	/* Set reply size */
100 	srv->fdidx[fd].rsp_limit = srv->fdidx[fd].omtu - sizeof(sdp_pdu_t);
101 	srv->fdidx[fd].rsp_size = rsp - srv->fdidx[fd].rsp;
102 	srv->fdidx[fd].rsp_cs = 0;
103 
104 	return (0);
105 }
106 
107 /*
108  * Send Service Register Response
109  */
110 
111 int32_t
112 server_send_service_register_response(server_p srv, int32_t fd)
113 {
114 	struct iovec	iov[2];
115 	sdp_pdu_t	pdu;
116 	int32_t		size;
117 
118 	assert(srv->fdidx[fd].rsp_size < srv->fdidx[fd].rsp_limit);
119 
120 	pdu.pid = SDP_PDU_ERROR_RESPONSE;
121 	pdu.tid = ((sdp_pdu_p)(srv->req))->tid;
122 	pdu.len = htons(srv->fdidx[fd].rsp_size);
123 
124 	iov[0].iov_base = &pdu;
125 	iov[0].iov_len = sizeof(pdu);
126 
127 	iov[1].iov_base = srv->fdidx[fd].rsp;
128 	iov[1].iov_len = srv->fdidx[fd].rsp_size;
129 
130 	do {
131 		size = writev(fd, (struct iovec const *) &iov, sizeof(iov)/sizeof(iov[0]));
132 	} while (size < 0 && errno == EINTR);
133 
134 	srv->fdidx[fd].rsp_cs = 0;
135 	srv->fdidx[fd].rsp_size = 0;
136 	srv->fdidx[fd].rsp_limit = 0;
137 
138 	return ((size < 0)? errno : 0);
139 }
140 
141