source: source/ariba/utility/bootstrap/modules/bluetoothsdp/BluetoothSdp.cpp@ 5633

Last change on this file since 5633 was 5633, checked in by Christoph Mayer, 15 years ago
File size: 11.9 KB
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1// [License]
2// The Ariba-Underlay Copyright
3//
4// Copyright (c) 2008-2009, Institute of Telematics, UniversitÀt Karlsruhe (TH)
5//
6// Institute of Telematics
7// UniversitÀt Karlsruhe (TH)
8// Zirkel 2, 76128 Karlsruhe
9// Germany
10//
11// Redistribution and use in source and binary forms, with or without
12// modification, are permitted provided that the following conditions are
13// met:
14//
15// 1. Redistributions of source code must retain the above copyright
16// notice, this list of conditions and the following disclaimer.
17// 2. Redistributions in binary form must reproduce the above copyright
18// notice, this list of conditions and the following disclaimer in the
19// documentation and/or other materials provided with the distribution.
20//
21// THIS SOFTWARE IS PROVIDED BY THE INSTITUTE OF TELEMATICS ``AS IS'' AND
22// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE ARIBA PROJECT OR
25// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
26// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
27// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
28// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
29// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
30// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
31// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32//
33// The views and conclusions contained in the software and documentation
34// are those of the authors and should not be interpreted as representing
35// official policies, either expressed or implied, of the Institute of
36// Telematics.
37// [License]
38
39#include "BluetoothSdp.h"
40
41#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
42
43 // Attribute descriptors for SDP
44 // base was chosen randomly
45 #define SDP_SPOVNET_BASE 0x4000
46 #define SDP_ATTR_SPOVNET_NAME 0x0000 + SDP_SPOVNET_BASE
47 #define SDP_ATTR_SPOVNET_INFO1 0x0001 + SDP_SPOVNET_BASE
48 #define SDP_ATTR_SPOVNET_INFO2 0x0002 + SDP_SPOVNET_BASE
49 #define SDP_ATTR_SPOVNET_INFO3 0x0003 + SDP_SPOVNET_BASE
50
51 // The SpoVNet unique identifier, this should be the same for all SpoVNet implementations
52 const uint8_t svc_uuid_int[] = {0x59, 0x29, 0x24, 0x34, 0x69, 0x42, 0x11, 0xde, 0x94,
53 0x3e, 0x00, 0x21, 0x5d, 0xb4, 0xd8, 0x54};
54
55 const char *service_name = "SpoVNet";
56 const char *svc_dsc = "www.ariba-underlay.org";
57 const char *service_prov = "ITM Uni Karlsruhe";
58
59#endif // HAVE_BLUETOOTH_BLUETOOTH_H
60
61
62namespace ariba {
63namespace utility {
64use_logging_cpp(BluetoothSdp);
65
66BluetoothSdp::BluetoothSdp(BootstrapInformationCallback* _callback) :
67 BootstrapModule(_callback), scan_timer_(io_service_) {
68 srand( time(NULL) );
69 found = false;
70#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
71
72 // This can be ignored, as the channel we really be saved in one
73 // of the info strings (as an attribute)
74 channel_ = 1;
75
76#endif // HAVE_BLUETOOTH_BLUETOOTH_H
77}
78
79BluetoothSdp::~BluetoothSdp() {
80}
81
82string BluetoothSdp::getName() {
83 return "BluetoothSdp";
84}
85
86string BluetoothSdp::getInformation() {
87 return "bootstrap module based on bluetooth service discovery protocol";
88}
89
90bool BluetoothSdp::isFunctional() {
91#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
92 return true;
93#else
94 return false;
95#endif
96}
97
98void BluetoothSdp::start() {
99#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
100
101 /*
102 * Initializes and forks the scanner.
103 */
104
105 io_service_.post(boost::bind(&BluetoothSdp::bt_scan, this));
106 t_ = boost::thread(boost::bind(&boost::asio::io_service::run, &io_service_));
107
108#endif // HAVE_BLUETOOTH_BLUETOOTH_H
109}
110
111void BluetoothSdp::stop() {
112#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
113
114 /*
115 * Stops the scanner.
116 */
117
118 // not sure if this is thread safe
119 io_service_.stop();
120 t_.join();
121
122 if(sdp_session_ != NULL)
123 sdp_close(sdp_session_);
124
125#endif // HAVE_BLUETOOTH_BLUETOOTH_H
126}
127
128void BluetoothSdp::publishService(string name, string info1, string info2,
129 string info3) {
130#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
131
132 /*
133 * Publishes an SpoVNet SDP Service and
134 * adds the arguments as info attributes.
135 */
136
137 logging_debug("registering SDP service");
138
139 uint8_t rfcomm_channel = channel_;
140
141 uuid_t root_uuid, l2cap_uuid, rfcomm_uuid, svc_uuid, svc_class_uuid;
142 sdp_list_t *l2cap_list = 0, *rfcomm_list = 0, *root_list = 0, *proto_list =
143 0, *access_proto_list = 0, *svc_class_list = 0, *profile_list = 0;
144 sdp_data_t *channel = 0;
145 sdp_profile_desc_t profile;
146 sdp_record_t record = {0};
147 sdp_session_ = 0;
148
149 if((name.length() > 256) || (info1.length() > 256) || (info2.length() > 256) || (info3.length() > 256)) {
150 logging_error("string argument too long, max size is 256");
151 return;
152 }
153
154 // prepare the info attribute buffers
155 //string namebuf, info1buf, info2buf, info3buf;
156 uint8_t namelen, info1len, info2len, info3len;
157
158 namelen = (uint8_t)name.length();
159 info1len = (uint8_t)info1.length();
160 info2len = (uint8_t)info2.length();
161 info3len = (uint8_t)info3.length();
162
163 // set the general service ID
164 sdp_uuid128_create(&svc_uuid, &svc_uuid_int);
165 sdp_set_service_id(&record, svc_uuid);
166
167 // set the service class
168 sdp_uuid16_create(&svc_class_uuid, SERIAL_PORT_SVCLASS_ID);
169 svc_class_list = sdp_list_append(0, &svc_class_uuid);
170 sdp_set_service_classes(&record, svc_class_list);
171
172 // set the Bluetooth profile information
173 sdp_uuid16_create(&profile.uuid, SERIAL_PORT_PROFILE_ID);
174 profile.version = 0x0100;
175 profile_list = sdp_list_append(0, &profile);
176 sdp_set_profile_descs(&record, profile_list);
177
178 // make the service record publicly browsable
179 sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP);
180 root_list = sdp_list_append(0, &root_uuid);
181 sdp_set_browse_groups(&record, root_list);
182
183 // set l2cap informatiint argc, char* argv[]on
184 sdp_uuid16_create(&l2cap_uuid, L2CAP_UUID);
185 l2cap_list = sdp_list_append(0, &l2cap_uuid);
186 proto_list = sdp_list_append(0, l2cap_list);
187
188 // register the RFCOMM channel for RFCOMM sockets
189 sdp_uuid16_create(&rfcomm_uuid, RFCOMM_UUID);
190 channel = sdp_data_alloc(SDP_UINT8, &rfcomm_channel);
191 rfcomm_list = sdp_list_append(0, &rfcomm_uuid);
192 sdp_list_append(rfcomm_list, channel);
193 sdp_list_append(proto_list, rfcomm_list);
194
195 access_proto_list = sdp_list_append(0, proto_list);
196 sdp_set_access_protos(&record, access_proto_list);
197
198 // set the name, provider, and description
199 sdp_set_info_attr(&record, service_name, service_prov, svc_dsc);
200
201 // add the spovnet attributes
202 sdp_attr_add_new(&record, SDP_ATTR_SPOVNET_NAME, SDP_TEXT_STR8,
203 name.data());
204
205 sdp_attr_add_new(&record, SDP_ATTR_SPOVNET_INFO1, SDP_TEXT_STR8,
206 info1.data());
207
208 sdp_attr_add_new(&record, SDP_ATTR_SPOVNET_INFO2, SDP_TEXT_STR8,
209 info2.data());
210
211 sdp_attr_add_new(&record, SDP_ATTR_SPOVNET_INFO3, SDP_TEXT_STR8,
212 info3.data());
213
214 // connect to the local SDP server, register the service record
215 if( sdp_session_ == NULL ){
216 sdp_session_ = sdp_connect(BDADDR_ANY, BDADDR_LOCAL, SDP_RETRY_IF_BUSY);
217 }
218
219 if (sdp_session_ == NULL) {
220 logging_error( "something is wrong with your SDP server, nothing registered: " << strerror(errno) );
221 } else {
222 int ret = sdp_record_register(sdp_session_, &record, 0);
223
224 if(ret < 0){
225 logging_error("failed registering sdp record: " << strerror(errno));
226 }else{
227 logging_debug("sdp record registered using session " << sdp_session_);
228 }
229 }
230
231 // cleanup
232 sdp_data_free(channel);
233 sdp_list_free(l2cap_list, 0);
234 sdp_list_free(rfcomm_list, 0);
235 sdp_list_free(root_list, 0);
236 sdp_list_free(access_proto_list, 0);
237 sdp_list_free(svc_class_list, 0);
238 sdp_list_free(profile_list, 0);
239
240#endif // HAVE_BLUETOOTH_BLUETOOTH_H
241}
242
243void BluetoothSdp::revokeService(string name) {
244#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
245
246 logging_debug("unregistering SDP service");
247 sdp_close(sdp_session_);
248
249#endif // HAVE_BLUETOOTH_BLUETOOTH_H
250}
251
252#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
253
254void BluetoothSdp::bt_scan() {
255 /*
256 * Scans for other bluetooth devices and starts a SDP search on them.
257 */
258
259 logging_debug("scanning for peers");
260
261 inquiry_info *ii = NULL;
262 int max_rsp, num_rsp;
263 int dev_id, sock, len, flags;
264 int i;
265
266 bdaddr_t address;
267 uint8_t channel;
268
269 dev_id = hci_get_route(NULL);
270 sock = hci_open_dev(dev_id);
271 if (dev_id < 0 || sock < 0) {
272 logging_error("opening socket for device "
273 << dev_id << " failed. can not scan for peers: " << strerror(errno));
274 return;
275 }
276
277 len = 8;
278 max_rsp = 255;
279 flags = IREQ_CACHE_FLUSH;
280 ii = (inquiry_info*) malloc(max_rsp * sizeof(inquiry_info));
281
282 num_rsp = hci_inquiry(dev_id, len, max_rsp, NULL, &ii, flags);
283 if (num_rsp < 0)
284 logging_error("hci_inquiry failed with " << num_rsp << ": " << strerror(errno));
285
286 for (i = 0; i < num_rsp; i++) {
287 address = (ii + i)->bdaddr;
288
289 string saddress = ba2string(&address);
290 string sname = ba2name(&address, sock);
291
292 logging_debug("found peer [" << saddress << "] [" << sname << "]");
293 sdp_search( address, sname );
294 }
295
296 free(ii);
297 close(sock);
298
299 if(!found){
300 int nextscan = (rand() % 30) + 5;
301 logging_debug("next sdp scan in " << nextscan << " seconds");
302
303
304 scan_timer_.expires_from_now( boost::posix_time::seconds(nextscan) );
305 scan_timer_.async_wait( boost::bind(&BluetoothSdp::bt_scan, this) );
306 }
307}
308
309void BluetoothSdp::sdp_search(bdaddr_t target, string devicename) {
310
311 /*
312 * Searches target for SDP records with the SpoVnet uuid
313 * and extracts its info attributes.
314 */
315
316 int status;
317 uuid_t svc_uuid;
318 sdp_list_t *response_list, *search_list, *attrid_list;
319 sdp_session_t *session = NULL;
320 uint32_t range = 0x0000ffff;
321 uint8_t port = 0;
322
323 // connect to the SDP server running on the remote machine
324 logging_debug("querying services from bt device ["
325 << ba2string(&target) << "] [" << devicename << "]");
326
327 // prepare the buffers for the attributes
328 char name[256], info1[256], info2[256], info3[256];
329
330 session = sdp_connect(BDADDR_ANY, &target, SDP_RETRY_IF_BUSY);
331
332 if (session == NULL) {
333 logging_error("failed to connect to SDP server at "
334 << ba2string(&target) << ": " << strerror(errno));
335 return;
336 }
337
338 sdp_uuid128_create(&svc_uuid, &svc_uuid_int);
339 search_list = sdp_list_append(0, &svc_uuid);
340 attrid_list = sdp_list_append(0, &range);
341
342 // get a list of service records that have UUID uuid_
343 response_list = NULL;
344 status = sdp_service_search_attr_req(session, search_list,
345 SDP_ATTR_REQ_RANGE, attrid_list, &response_list);
346
347 if (status == 0) {
348 sdp_list_t *proto_list = NULL;
349 sdp_list_t *r = response_list;
350
351 // go through each of the service records
352 for ( ; r != NULL; r = r->next) {
353 sdp_record_t *rec = (sdp_record_t*) r->data;
354
355 // get a list of the protocol sequences
356 if (sdp_get_access_protos(rec, &proto_list) == 0) {
357
358 // get the RFCOMM port number
359 port = sdp_get_proto_port(proto_list, RFCOMM_UUID);
360
361 sdp_list_free(proto_list, 0);
362
363 sdp_get_string_attr(rec, SDP_ATTR_SPOVNET_NAME, (char*)&name, 256);
364 sdp_get_string_attr(rec, SDP_ATTR_SPOVNET_INFO1, (char*)&info1, 256);
365 sdp_get_string_attr(rec, SDP_ATTR_SPOVNET_INFO2, (char*)&info2, 256);
366 sdp_get_string_attr(rec, SDP_ATTR_SPOVNET_INFO3, (char*)&info3, 256);
367
368 logging_info("Remote peer name is: " << name);
369 logging_info("Remote peer info1 is: " << info1);
370 logging_info("Remote peer info2 is: " << info2);
371 logging_info("Remote peer info3 is: " << info3);
372
373 // Callback
374 found = true;
375 callback->onBootstrapServiceFound(name, info1, info2, info3);
376 }
377 sdp_record_free(rec);
378 }
379 } else {
380 logging_error("sdp_service_search_attr_req failed with timeout: " << strerror(errno));
381 }
382
383 sdp_list_free(response_list, 0);
384 sdp_list_free(search_list, 0);
385 sdp_list_free(attrid_list, 0);
386 sdp_close(session);
387}
388
389string BluetoothSdp::ba2string(bdaddr_t* ba) {
390 /*
391 * Returns a string holding the bt adress in human readable form.
392 */
393 char addr[32] = { 0 };
394 char str[32] = { 0 };
395 ba2str(ba, str);
396 string result = str;
397 return result;
398}
399
400string BluetoothSdp::ba2name(bdaddr_t* ba, int sock){
401
402 char name[256] = {0};
403 memset(name, 0, sizeof(name));
404
405 if( hci_read_remote_name(sock, ba, sizeof(name), name, 0) < 0 )
406 strcpy(name, "unknown");
407
408 string result = name;
409 return result;
410}
411
412#endif // HAVE_BLUETOOTH_BLUETOOTH_H
413
414}} //namespace ariba, utility
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