1 /*
2 * session.c
3 *
4 * Copyright (c) 2001-2003 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: session.c,v 1.2 2003/09/04 22:12:13 max Exp $
29 * $FreeBSD$
30 */
31 #define L2CAP_SOCKET_CHECKED
32 #include <bluetooth.h>
33 #include <errno.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <unistd.h>
37
38 #include <sdp-int.h>
39 #include <sdp.h>
40
41 void *
sdp_open(bdaddr_t const * l,bdaddr_t const * r)42 sdp_open(bdaddr_t const *l, bdaddr_t const *r)
43 {
44 sdp_session_p ss = NULL;
45 struct sockaddr_l2cap sa;
46 socklen_t size;
47
48 if ((ss = calloc(1, sizeof(*ss))) == NULL)
49 goto fail;
50
51 if (l == NULL || r == NULL) {
52 ss->error = EINVAL;
53 goto fail;
54 }
55
56 ss->s = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BLUETOOTH_PROTO_L2CAP);
57 if (ss->s < 0) {
58 ss->error = errno;
59 goto fail;
60 }
61
62 sa.l2cap_len = sizeof(sa);
63 sa.l2cap_family = AF_BLUETOOTH;
64 sa.l2cap_psm = 0;
65 sa.l2cap_cid = 0;
66 sa.l2cap_bdaddr_type = BDADDR_BREDR;
67
68 memcpy(&sa.l2cap_bdaddr, l, sizeof(sa.l2cap_bdaddr));
69 if (bind(ss->s, (struct sockaddr *) &sa, sizeof(sa)) < 0) {
70 ss->error = errno;
71 goto fail;
72 }
73
74 sa.l2cap_psm = htole16(NG_L2CAP_PSM_SDP);
75 memcpy(&sa.l2cap_bdaddr, r, sizeof(sa.l2cap_bdaddr));
76 if (connect(ss->s, (struct sockaddr *) &sa, sizeof(sa)) < 0) {
77 ss->error = errno;
78 goto fail;
79 }
80
81 size = sizeof(ss->omtu);
82 if (getsockopt(ss->s, SOL_L2CAP, SO_L2CAP_OMTU, &ss->omtu, &size) < 0) {
83 ss->error = errno;
84 goto fail;
85 }
86 if ((ss->req = malloc(ss->omtu)) == NULL) {
87 ss->error = ENOMEM;
88 goto fail;
89 }
90 ss->req_e = ss->req + ss->omtu;
91
92 size = sizeof(ss->imtu);
93 if (getsockopt(ss->s, SOL_L2CAP, SO_L2CAP_IMTU, &ss->imtu, &size) < 0) {
94 ss->error = errno;
95 goto fail;
96 }
97 if ((ss->rsp = malloc(ss->imtu)) == NULL) {
98 ss->error = ENOMEM;
99 goto fail;
100 }
101 ss->rsp_e = ss->rsp + ss->imtu;
102 ss->error = 0;
103 fail:
104 return ((void *) ss);
105 }
106
107 void *
sdp_open_local(char const * control)108 sdp_open_local(char const *control)
109 {
110 sdp_session_p ss = NULL;
111 struct sockaddr_un sa;
112
113 if ((ss = calloc(1, sizeof(*ss))) == NULL)
114 goto fail;
115
116 ss->s = socket(PF_UNIX, SOCK_STREAM, 0);
117 if (ss->s < 0) {
118 ss->error = errno;
119 goto fail;
120 }
121
122 if (control == NULL)
123 control = SDP_LOCAL_PATH;
124
125 sa.sun_len = sizeof(sa);
126 sa.sun_family = AF_UNIX;
127 strlcpy(sa.sun_path, control, sizeof(sa.sun_path));
128
129 if (connect(ss->s, (struct sockaddr *) &sa, sizeof(sa)) < 0) {
130 ss->error = errno;
131 goto fail;
132 }
133
134 ss->flags |= SDP_SESSION_LOCAL;
135 ss->imtu = ss->omtu = SDP_LOCAL_MTU;
136
137 if ((ss->req = malloc(ss->omtu)) == NULL) {
138 ss->error = ENOMEM;
139 goto fail;
140 }
141 ss->req_e = ss->req + ss->omtu;
142
143 if ((ss->rsp = malloc(ss->imtu)) == NULL) {
144 ss->error = ENOMEM;
145 goto fail;
146 }
147 ss->rsp_e = ss->rsp + ss->imtu;
148 ss->error = 0;
149 fail:
150 return ((void *) ss);
151 }
152
153 int32_t
sdp_close(void * xss)154 sdp_close(void *xss)
155 {
156 sdp_session_p ss = (sdp_session_p) xss;
157
158 if (ss != NULL) {
159 if (ss->s >= 0)
160 close(ss->s);
161
162 if (ss->req != NULL)
163 free(ss->req);
164 if (ss->rsp != NULL)
165 free(ss->rsp);
166
167 memset(ss, 0, sizeof(*ss));
168 free(ss);
169 }
170
171 return (0);
172 }
173
174 int32_t
sdp_error(void * xss)175 sdp_error(void *xss)
176 {
177 sdp_session_p ss = (sdp_session_p) xss;
178
179 return ((ss != NULL)? ss->error : EINVAL);
180 }
181