source: source/ariba/utility/bootstrap/modules/bluetoothsdp/BluetoothSdp.cpp@ 5945

Last change on this file since 5945 was 5649, checked in by Christoph Mayer, 15 years ago
File size: 12.9 KB
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[4840]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//
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12// modification, are permitted provided that the following conditions are
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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,
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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
[4870]41#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
42
[5638]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
[4870]50
[5638]51// The SpoVNet unique identifier, this should be the same for all SpoVNet implementations
52const uint8_t svc_uuid_int[] = {0x59, 0x29, 0x24, 0x34, 0x69, 0x42, 0x11, 0xde, 0x94,
[5316]53 0x3e, 0x00, 0x21, 0x5d, 0xb4, 0xd8, 0x54};
[4870]54
[5638]55const char *service_name = "SpoVNet";
56const char *svc_dsc = "www.ariba-underlay.org";
57const char *service_prov = "ITM Uni Karlsruhe";
[4870]58
59#endif // HAVE_BLUETOOTH_BLUETOOTH_H
60
61
[4840]62namespace ariba {
63namespace utility {
[4970]64use_logging_cpp(BluetoothSdp);
[4840]65
[4870]66BluetoothSdp::BluetoothSdp(BootstrapInformationCallback* _callback) :
67 BootstrapModule(_callback), scan_timer_(io_service_) {
[5633]68 srand( time(NULL) );
[4870]69#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
70
[4970]71 // This can be ignored, as the channel we really be saved in one
72 // of the info strings (as an attribute)
73 channel_ = 1;
[4870]74
75#endif // HAVE_BLUETOOTH_BLUETOOTH_H
[4840]76}
77
[4870]78BluetoothSdp::~BluetoothSdp() {
[4840]79}
80
[4870]81string BluetoothSdp::getName() {
[4840]82 return "BluetoothSdp";
83}
84
[4870]85string BluetoothSdp::getInformation() {
[4840]86 return "bootstrap module based on bluetooth service discovery protocol";
87}
88
[4870]89bool BluetoothSdp::isFunctional() {
90#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
[5316]91 return true;
[4870]92#else
[4840]93 return false;
[4870]94#endif
[4840]95}
96
[4870]97void BluetoothSdp::start() {
98#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
99
100 /*
101 * Initializes and forks the scanner.
102 */
103
104 io_service_.post(boost::bind(&BluetoothSdp::bt_scan, this));
105 t_ = boost::thread(boost::bind(&boost::asio::io_service::run, &io_service_));
106
107#endif // HAVE_BLUETOOTH_BLUETOOTH_H
[4840]108}
109
[4870]110void BluetoothSdp::stop() {
111#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
112
113 /*
114 * Stops the scanner.
115 */
116
117 // not sure if this is thread safe
118 io_service_.stop();
119 t_.join();
120
[5316]121 if(sdp_session_ != NULL)
122 sdp_close(sdp_session_);
123
[4870]124#endif // HAVE_BLUETOOTH_BLUETOOTH_H
[4840]125}
126
[4870]127void BluetoothSdp::publishService(string name, string info1, string info2,
128 string info3) {
129#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
130
131 /*
132 * Publishes an SpoVNet SDP Service and
133 * adds the arguments as info attributes.
134 */
135
[5316]136 logging_debug("registering SDP service");
[4870]137
138 uint8_t rfcomm_channel = channel_;
139
140 uuid_t root_uuid, l2cap_uuid, rfcomm_uuid, svc_uuid, svc_class_uuid;
141 sdp_list_t *l2cap_list = 0, *rfcomm_list = 0, *root_list = 0, *proto_list =
[5638]142 0, *access_proto_list = 0, *svc_class_list = 0, *profile_list = 0;
[4870]143 sdp_data_t *channel = 0;
144 sdp_profile_desc_t profile;
145 sdp_record_t record = {0};
146 sdp_session_ = 0;
147
[5610]148 if((name.length() > 256) || (info1.length() > 256) || (info2.length() > 256) || (info3.length() > 256)) {
149 logging_error("string argument too long, max size is 256");
150 return;
151 }
152
[4870]153 // prepare the info attribute buffers
[4970]154 //string namebuf, info1buf, info2buf, info3buf;
[4894]155 uint8_t namelen, info1len, info2len, info3len;
156
[4870]157 namelen = (uint8_t)name.length();
158 info1len = (uint8_t)info1.length();
159 info2len = (uint8_t)info2.length();
160 info3len = (uint8_t)info3.length();
161
162 // set the general service ID
163 sdp_uuid128_create(&svc_uuid, &svc_uuid_int);
164 sdp_set_service_id(&record, svc_uuid);
165
166 // set the service class
167 sdp_uuid16_create(&svc_class_uuid, SERIAL_PORT_SVCLASS_ID);
168 svc_class_list = sdp_list_append(0, &svc_class_uuid);
169 sdp_set_service_classes(&record, svc_class_list);
170
171 // set the Bluetooth profile information
172 sdp_uuid16_create(&profile.uuid, SERIAL_PORT_PROFILE_ID);
173 profile.version = 0x0100;
174 profile_list = sdp_list_append(0, &profile);
175 sdp_set_profile_descs(&record, profile_list);
176
177 // make the service record publicly browsable
178 sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP);
179 root_list = sdp_list_append(0, &root_uuid);
180 sdp_set_browse_groups(&record, root_list);
181
182 // set l2cap informatiint argc, char* argv[]on
183 sdp_uuid16_create(&l2cap_uuid, L2CAP_UUID);
184 l2cap_list = sdp_list_append(0, &l2cap_uuid);
185 proto_list = sdp_list_append(0, l2cap_list);
186
187 // register the RFCOMM channel for RFCOMM sockets
188 sdp_uuid16_create(&rfcomm_uuid, RFCOMM_UUID);
189 channel = sdp_data_alloc(SDP_UINT8, &rfcomm_channel);
190 rfcomm_list = sdp_list_append(0, &rfcomm_uuid);
191 sdp_list_append(rfcomm_list, channel);
192 sdp_list_append(proto_list, rfcomm_list);
193
194 access_proto_list = sdp_list_append(0, proto_list);
195 sdp_set_access_protos(&record, access_proto_list);
196
197 // set the name, provider, and description
198 sdp_set_info_attr(&record, service_name, service_prov, svc_dsc);
199
[4904]200 // add the spovnet attributes
201 sdp_attr_add_new(&record, SDP_ATTR_SPOVNET_NAME, SDP_TEXT_STR8,
[4970]202 name.data());
[4870]203
[4904]204 sdp_attr_add_new(&record, SDP_ATTR_SPOVNET_INFO1, SDP_TEXT_STR8,
[4970]205 info1.data());
[4870]206
[4904]207 sdp_attr_add_new(&record, SDP_ATTR_SPOVNET_INFO2, SDP_TEXT_STR8,
[4970]208 info2.data());
[4870]209
[4904]210 sdp_attr_add_new(&record, SDP_ATTR_SPOVNET_INFO3, SDP_TEXT_STR8,
[4970]211 info3.data());
[4870]212
[5316]213 // connect to the local SDP server, register the service record
214 if( sdp_session_ == NULL ){
215 sdp_session_ = sdp_connect(BDADDR_ANY, BDADDR_LOCAL, SDP_RETRY_IF_BUSY);
216 }
[4870]217
[5316]218 if (sdp_session_ == NULL) {
[5412]219 logging_error( "something is wrong with your SDP server, nothing registered: " << strerror(errno) );
[4870]220 } else {
[5316]221 int ret = sdp_record_register(sdp_session_, &record, 0);
222
223 if(ret < 0){
[5412]224 logging_error("failed registering sdp record: " << strerror(errno));
[5316]225 }else{
226 logging_debug("sdp record registered using session " << sdp_session_);
227 }
[4870]228 }
229
230 // cleanup
231 sdp_data_free(channel);
232 sdp_list_free(l2cap_list, 0);
233 sdp_list_free(rfcomm_list, 0);
234 sdp_list_free(root_list, 0);
235 sdp_list_free(access_proto_list, 0);
236 sdp_list_free(svc_class_list, 0);
237 sdp_list_free(profile_list, 0);
238
239#endif // HAVE_BLUETOOTH_BLUETOOTH_H
[4840]240}
241
[4870]242void BluetoothSdp::revokeService(string name) {
243#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
244
[5316]245 logging_debug("unregistering SDP service");
[4870]246 sdp_close(sdp_session_);
247
248#endif // HAVE_BLUETOOTH_BLUETOOTH_H
[4840]249}
250
[4870]251#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
252
253void BluetoothSdp::bt_scan() {
254
[5638]255 //
256 // scan for devices if we have no active rfcomm connections running.
257 // otherwise we would break existing connections due to chipping seq
258 //
[4870]259
[5638]260 if(!haveConnections()){
[4870]261
[5638]262 /*
263 * Scans for other bluetooth devices and starts a SDP search on them.
264 */
[4870]265
[5638]266 logging_debug("scanning for peers");
[4870]267
[5638]268 inquiry_info *ii = NULL;
269 int max_rsp, num_rsp;
270 int dev_id, sock, len, flags;
271 int i;
[4870]272
[5638]273 bdaddr_t address;
274 uint8_t channel;
[4870]275
[5638]276 dev_id = hci_get_route(NULL);
277 sock = hci_open_dev(dev_id);
278 if (dev_id < 0 || sock < 0) {
279 logging_error("opening socket for device "
280 << dev_id << " failed. can not scan for peers: " << strerror(errno));
281 return;
282 }
[4905]283
[5638]284 len = 8;
285 max_rsp = 255;
286 flags = IREQ_CACHE_FLUSH;
287 ii = (inquiry_info*) malloc(max_rsp * sizeof(inquiry_info));
[5358]288
[5638]289 num_rsp = hci_inquiry(dev_id, len, max_rsp, NULL, &ii, flags);
290 if (num_rsp < 0)
291 logging_error("hci_inquiry failed with " << num_rsp << ": " << strerror(errno));
[4870]292
[5638]293 for (i = 0; i < num_rsp; i++) {
294 address = (ii + i)->bdaddr;
[4870]295
[5638]296 string saddress = ba2string(&address);
297 string sname = ba2name(&address, sock);
[5633]298
[5638]299 logging_debug("found peer [" << saddress << "] [" << sname << "]");
300 sdp_search( address, sname );
301 }
[5633]302
[5638]303 free(ii);
304 close(sock);
305
306 } else {
307 logging_debug("have active rfcomm connectinos, not searching");
[5632]308 }
[5638]309
310 int nextscan = (rand() % 30) + 5;
311 logging_debug("next sdp scan try in " << nextscan << " seconds");
312
313 scan_timer_.expires_from_now( boost::posix_time::seconds(nextscan) );
314 scan_timer_.async_wait( boost::bind(&BluetoothSdp::bt_scan, this) );
[4870]315}
316
[5358]317void BluetoothSdp::sdp_search(bdaddr_t target, string devicename) {
[4870]318
319 /*
320 * Searches target for SDP records with the SpoVnet uuid
321 * and extracts its info attributes.
322 */
323
324 int status;
325 uuid_t svc_uuid;
326 sdp_list_t *response_list, *search_list, *attrid_list;
[5316]327 sdp_session_t *session = NULL;
[4870]328 uint32_t range = 0x0000ffff;
329 uint8_t port = 0;
330
[5358]331 // connect to the SDP server running on the remote machine
332 logging_debug("querying services from bt device ["
333 << ba2string(&target) << "] [" << devicename << "]");
334
[4870]335 // prepare the buffers for the attributes
[4905]336 char name[256], info1[256], info2[256], info3[256];
[4870]337
[5344]338 session = sdp_connect(BDADDR_ANY, &target, SDP_RETRY_IF_BUSY);
[4870]339
[5316]340 if (session == NULL) {
[5412]341 logging_error("failed to connect to SDP server at "
342 << ba2string(&target) << ": " << strerror(errno));
[4870]343 return;
344 }
345
346 sdp_uuid128_create(&svc_uuid, &svc_uuid_int);
347 search_list = sdp_list_append(0, &svc_uuid);
348 attrid_list = sdp_list_append(0, &range);
349
350 // get a list of service records that have UUID uuid_
351 response_list = NULL;
352 status = sdp_service_search_attr_req(session, search_list,
353 SDP_ATTR_REQ_RANGE, attrid_list, &response_list);
354
355 if (status == 0) {
356 sdp_list_t *proto_list = NULL;
357 sdp_list_t *r = response_list;
358
359 // go through each of the service records
[5316]360 for ( ; r != NULL; r = r->next) {
[4870]361 sdp_record_t *rec = (sdp_record_t*) r->data;
362
363 // get a list of the protocol sequences
364 if (sdp_get_access_protos(rec, &proto_list) == 0) {
365
366 // get the RFCOMM port number
367 port = sdp_get_proto_port(proto_list, RFCOMM_UUID);
368
369 sdp_list_free(proto_list, 0);
370
[4905]371 sdp_get_string_attr(rec, SDP_ATTR_SPOVNET_NAME, (char*)&name, 256);
[5316]372 sdp_get_string_attr(rec, SDP_ATTR_SPOVNET_INFO1, (char*)&info1, 256);
373 sdp_get_string_attr(rec, SDP_ATTR_SPOVNET_INFO2, (char*)&info2, 256);
374 sdp_get_string_attr(rec, SDP_ATTR_SPOVNET_INFO3, (char*)&info3, 256);
[4900]375
[4905]376 logging_info("Remote peer name is: " << name);
377 logging_info("Remote peer info1 is: " << info1);
378 logging_info("Remote peer info2 is: " << info2);
379 logging_info("Remote peer info3 is: " << info3);
[4970]380
381 // Callback
382 callback->onBootstrapServiceFound(name, info1, info2, info3);
[4870]383 }
384 sdp_record_free(rec);
385 }
[5316]386 } else {
[5412]387 logging_error("sdp_service_search_attr_req failed with timeout: " << strerror(errno));
[4870]388 }
[5316]389
[4870]390 sdp_list_free(response_list, 0);
391 sdp_list_free(search_list, 0);
392 sdp_list_free(attrid_list, 0);
393 sdp_close(session);
394}
395
[5358]396string BluetoothSdp::ba2string(bdaddr_t* ba) {
[4970]397 /*
398 * Returns a string holding the bt adress in human readable form.
399 */
[5316]400 char addr[32] = { 0 };
401 char str[32] = { 0 };
[4970]402 ba2str(ba, str);
403 string result = str;
404 return result;
405}
406
[5358]407string BluetoothSdp::ba2name(bdaddr_t* ba, int sock){
408
409 char name[256] = {0};
410 memset(name, 0, sizeof(name));
411
412 if( hci_read_remote_name(sock, ba, sizeof(name), name, 0) < 0 )
413 strcpy(name, "unknown");
414
415 string result = name;
416 return result;
417}
418
[5638]419bool BluetoothSdp::haveConnections(){
420
421 struct hci_conn_list_req* cl = NULL;
422 struct hci_conn_info* ci = NULL;
423
424 int btsock = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
425 if(btsock < 0){
426 logging_error("failed getting bluetooth raw socket");
427 return true; // return true to be safe here and not perform sdp scan
428 }
429
430 cl = (struct hci_conn_list_req*)malloc(10 * sizeof(struct hci_conn_info) + sizeof(struct hci_conn_list_req));
431
432 cl->dev_id = hci_get_route(NULL);;
433 cl->conn_num = 10;
434 ci = cl->conn_info;
435
436 if(ioctl(btsock, HCIGETCONNLIST, (void*)cl)){
437 logging_warn("could not get active rfcomm connections");
438 return true; // return true to be safe here and not perform sdp scan
439 }
440
441 bool haveconn = (cl->conn_num > 0);
[5649]442 logging_debug("we have " << cl->conn_num << " active hci connections");
[5638]443 free(cl);
444 close(btsock);
445
446 return haveconn;
447}
448
[4870]449#endif // HAVE_BLUETOOTH_BLUETOOTH_H
450
[4879]451}} //namespace ariba, utility
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