1 /*-
2 * srr.c
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 *
6 * Copyright (c) 2004 Maksim Yevmenkin <[email protected]>
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * $Id: srr.c,v 1.1 2004/01/13 01:54:39 max Exp $
31 */
32
33 #include <sys/queue.h>
34 #include <sys/uio.h>
35 #include <netinet/in.h>
36 #include <arpa/inet.h>
37 #include <assert.h>
38 #define L2CAP_SOCKET_CHECKED
39 #include <bluetooth.h>
40 #include <errno.h>
41 #include <sdp.h>
42 #include <string.h>
43 #include "profile.h"
44 #include "provider.h"
45 #include "server.h"
46
47 /*
48 * Prepare Service Register response
49 */
50
51 int32_t
server_prepare_service_register_response(server_p srv,int32_t fd)52 server_prepare_service_register_response(server_p srv, int32_t fd)
53 {
54 uint8_t const *req = srv->req + sizeof(sdp_pdu_t);
55 uint8_t const *req_end = req + ((sdp_pdu_p)(srv->req))->len;
56 uint8_t *rsp = srv->fdidx[fd].rsp;
57
58 profile_t *profile = NULL;
59 provider_t *provider = NULL;
60 bdaddr_t *bdaddr = NULL;
61 int32_t uuid;
62
63 /*
64 * Minimal Service Register Request
65 *
66 * value16 - uuid 2 bytes
67 * bdaddr - BD_ADDR 6 bytes
68 */
69
70 if (!srv->fdidx[fd].control ||
71 !srv->fdidx[fd].priv || req_end - req < 8)
72 return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
73
74 /* Get ServiceClass UUID */
75 SDP_GET16(uuid, req);
76
77 /* Get BD_ADDR */
78 bdaddr = (bdaddr_p) req;
79 req += sizeof(*bdaddr);
80
81 /* Lookup profile descriptror */
82 profile = profile_get_descriptor(uuid);
83 if (profile == NULL)
84 return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
85
86 /* Validate user data */
87 if (req_end - req < profile->dsize ||
88 profile->valid == NULL ||
89 (profile->valid)(req, req_end - req) == 0)
90 return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
91
92 /* Register provider */
93 provider = provider_register(profile, bdaddr, fd, req, req_end - req);
94 if (provider == NULL)
95 return (SDP_ERROR_CODE_INSUFFICIENT_RESOURCES);
96
97 SDP_PUT16(0, rsp);
98 SDP_PUT32(provider->handle, rsp);
99
100 /* Set reply size */
101 srv->fdidx[fd].rsp_limit = srv->fdidx[fd].omtu - sizeof(sdp_pdu_t);
102 srv->fdidx[fd].rsp_size = rsp - srv->fdidx[fd].rsp;
103 srv->fdidx[fd].rsp_cs = 0;
104
105 return (0);
106 }
107
108 /*
109 * Send Service Register Response
110 */
111
112 int32_t
server_send_service_register_response(server_p srv,int32_t fd)113 server_send_service_register_response(server_p srv, int32_t fd)
114 {
115 struct iovec iov[2];
116 sdp_pdu_t pdu;
117 int32_t size;
118
119 assert(srv->fdidx[fd].rsp_size < srv->fdidx[fd].rsp_limit);
120
121 pdu.pid = SDP_PDU_ERROR_RESPONSE;
122 pdu.tid = ((sdp_pdu_p)(srv->req))->tid;
123 pdu.len = htons(srv->fdidx[fd].rsp_size);
124
125 iov[0].iov_base = &pdu;
126 iov[0].iov_len = sizeof(pdu);
127
128 iov[1].iov_base = srv->fdidx[fd].rsp;
129 iov[1].iov_len = srv->fdidx[fd].rsp_size;
130
131 do {
132 size = writev(fd, (struct iovec const *) &iov, sizeof(iov)/sizeof(iov[0]));
133 } while (size < 0 && errno == EINTR);
134
135 srv->fdidx[fd].rsp_cs = 0;
136 srv->fdidx[fd].rsp_size = 0;
137 srv->fdidx[fd].rsp_limit = 0;
138
139 return ((size < 0)? errno : 0);
140 }
141
142