An Overlay-based
Virtual Network Substrate
SpoVNet

source: source/ariba/utility/bootstrap/modules/bluetoothsdp/BluetoothSdp.cpp @ 4905

Last change on this file since 4905 was 4905, checked in by stud-florian, 11 years ago

The attribute stuff in BluetoothSdp? should be working now.

File size: 11.2 KB
Line 
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
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25// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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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
52const uint8_t svc_uuid_int[] = {0x59, 0x29, 0x24, 0x34, 0x69, 0x42, 0x11, 0xde, 0x94,
53        0x3e, 0x00, 0x21, 0x5d, 0xb4, 0xd8, 0x54};
54
55const char *service_name = "SpoVNet";
56const char *svc_dsc = "Spontaneous Virtual Network";
57const char *service_prov = "ITM Uni Karlsruhe";
58
59#endif // HAVE_BLUETOOTH_BLUETOOTH_H
60
61
62namespace ariba {
63namespace utility {
64use_logging_cpp(BluetoothSdp)
65;
66
67//TODO: figure out this compiler flag stuff
68
69BluetoothSdp::BluetoothSdp(BootstrapInformationCallback* _callback) :
70        BootstrapModule(_callback), scan_timer_(io_service_) {
71#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
72
73        // TODO: think about this!
74        channel_ = 7;
75        // TODO: what about the callback?
76
77#endif // HAVE_BLUETOOTH_BLUETOOTH_H
78}
79
80BluetoothSdp::~BluetoothSdp() {
81}
82
83string BluetoothSdp::getName() {
84        return "BluetoothSdp";
85}
86
87string BluetoothSdp::getInformation() {
88        return "bootstrap module based on bluetooth service discovery protocol";
89}
90
91bool BluetoothSdp::isFunctional() {
92#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
93        return true; // Not tested yet :)
94#else
95        return false;
96#endif
97}
98
99void BluetoothSdp::start() {
100#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
101
102        /*
103         * Initializes and forks the scanner.
104         */
105
106        io_service_.post(boost::bind(&BluetoothSdp::bt_scan, this));
107        t_ = boost::thread(boost::bind(&boost::asio::io_service::run, &io_service_));
108
109#endif // HAVE_BLUETOOTH_BLUETOOTH_H
110}
111
112void BluetoothSdp::stop() {
113#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
114
115        /*
116         * Stops the scanner.
117         */
118
119        // not sure if this is thread safe
120        io_service_.stop();
121        t_.join();
122
123#endif // HAVE_BLUETOOTH_BLUETOOTH_H
124}
125
126void BluetoothSdp::publishService(string name, string info1, string info2,
127                string info3) {
128#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
129
130        /*
131         * Publishes an SpoVNet SDP Service and
132         * adds the arguments as info attributes.
133         */
134
135        logging_info("Registering SDP service");
136
137        uint8_t rfcomm_channel = channel_;
138
139        uuid_t root_uuid, l2cap_uuid, rfcomm_uuid, svc_uuid, svc_class_uuid;
140        sdp_list_t *l2cap_list = 0, *rfcomm_list = 0, *root_list = 0, *proto_list =
141        0, *access_proto_list = 0, *svc_class_list = 0, *profile_list = 0;
142        sdp_data_t *channel = 0;
143        sdp_profile_desc_t profile;
144        sdp_record_t record = {0};
145        sdp_session_ = 0;
146
147        bdaddr_t bdaddr_any = (bdaddr_t) { {0, 0, 0, 0, 0, 0}};
148        bdaddr_t bdaddr_local = (bdaddr_t) { {0, 0, 0, 0xff, 0xff, 0xff}};
149
150        // prepare the info attribute buffers
151        string namebuf, info1buf, info2buf, info3buf;
152        uint8_t namelen, info1len, info2len, info3len;
153
154        namelen = (uint8_t)name.length();
155        info1len = (uint8_t)info1.length();
156        info2len = (uint8_t)info2.length();
157        info3len = (uint8_t)info3.length();
158
159        if((namelen > 256) || (info1len > 256) || (info2len > 256) || (info3len > 256)) {
160                logging_error("String Argument too long, max size is 256!");
161                return;
162        }
163
164        // we need to save the string len for sdp
165        namebuf = (char)namelen;
166        namebuf.append(name);
167        info1buf = (char)info1len;
168        info1buf.append(info1);
169        info2buf = (char)info2len;
170        info2buf.append(info2);
171        info3buf = (char)info3len;
172        info3buf.append(info3);
173
174        // set the general service ID
175        sdp_uuid128_create(&svc_uuid, &svc_uuid_int);
176        sdp_set_service_id(&record, svc_uuid);
177
178        // set the service class
179        sdp_uuid16_create(&svc_class_uuid, SERIAL_PORT_SVCLASS_ID);
180        svc_class_list = sdp_list_append(0, &svc_class_uuid);
181        sdp_set_service_classes(&record, svc_class_list);
182
183        // set the Bluetooth profile information
184        sdp_uuid16_create(&profile.uuid, SERIAL_PORT_PROFILE_ID);
185        profile.version = 0x0100;
186        profile_list = sdp_list_append(0, &profile);
187        sdp_set_profile_descs(&record, profile_list);
188
189        // make the service record publicly browsable
190        sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP);
191        root_list = sdp_list_append(0, &root_uuid);
192        sdp_set_browse_groups(&record, root_list);
193
194        // set l2cap informatiint argc, char* argv[]on
195        sdp_uuid16_create(&l2cap_uuid, L2CAP_UUID);
196        l2cap_list = sdp_list_append(0, &l2cap_uuid);
197        proto_list = sdp_list_append(0, l2cap_list);
198
199        // register the RFCOMM channel for RFCOMM sockets
200        sdp_uuid16_create(&rfcomm_uuid, RFCOMM_UUID);
201        channel = sdp_data_alloc(SDP_UINT8, &rfcomm_channel);
202        rfcomm_list = sdp_list_append(0, &rfcomm_uuid);
203        sdp_list_append(rfcomm_list, channel);
204        sdp_list_append(proto_list, rfcomm_list);
205
206        access_proto_list = sdp_list_append(0, proto_list);
207        sdp_set_access_protos(&record, access_proto_list);
208
209        // set the name, provider, and description
210        sdp_set_info_attr(&record, service_name, service_prov, svc_dsc);
211
212        // add the spovnet attributes
213        sdp_attr_add_new(&record, SDP_ATTR_SPOVNET_NAME, SDP_TEXT_STR8,
214                        namebuf.data());
215
216        sdp_attr_add_new(&record, SDP_ATTR_SPOVNET_INFO1, SDP_TEXT_STR8,
217                        info1buf.data());
218
219        sdp_attr_add_new(&record, SDP_ATTR_SPOVNET_INFO2, SDP_TEXT_STR8,
220                        info2buf.data());
221
222        sdp_attr_add_new(&record, SDP_ATTR_SPOVNET_INFO3, SDP_TEXT_STR8,
223                        info3buf.data());
224
225        // connect to the local SDP server, register the service record,
226        // and disconnect
227        sdp_session_ = sdp_connect(&bdaddr_any, &bdaddr_local, SDP_RETRY_IF_BUSY);
228
229        if (sdp_session_ == 0) {
230                logging_error( "Something is wrong with your SDP server, nothing registered" );
231        } else {
232                sdp_record_register(sdp_session_, &record, 0);
233        }
234
235        // cleanup
236        sdp_data_free(channel);
237        sdp_list_free(l2cap_list, 0);
238        sdp_list_free(rfcomm_list, 0);
239        sdp_list_free(root_list, 0);
240        sdp_list_free(access_proto_list, 0);
241        sdp_list_free(svc_class_list, 0);
242        sdp_list_free(profile_list, 0);
243
244#endif // HAVE_BLUETOOTH_BLUETOOTH_H
245}
246
247void BluetoothSdp::revokeService(string name) {
248#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
249
250        logging_info("Unregistering SDP service");
251        sdp_close(sdp_session_);
252
253#endif // HAVE_BLUETOOTH_BLUETOOTH_H
254}
255
256#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
257
258void BluetoothSdp::bt_scan() {
259
260
261        /*
262         * Scans for other bluetooth devices and starts a SDP search on them.
263         * Repeats 20 seconds after the end of the scan.
264         */
265
266        logging_info("Scanning for peers");
267
268        inquiry_info *ii = NULL;
269        int max_rsp, num_rsp;
270        int dev_id, sock, len, flags;
271        int i;
272
273        /*
274         char addr[19] = { 0 };
275         char name[248] = { 0 };
276         */
277        bdaddr_t address;
278        uint8_t channel;
279
280        dev_id = hci_get_route(NULL);
281        sock = hci_open_dev(dev_id);
282        if (dev_id < 0 || sock < 0) {
283                logging_error("opening socket");
284                exit(1);
285        }
286
287        len = 8;
288        max_rsp = 255;
289        flags = IREQ_CACHE_FLUSH;
290        ii = (inquiry_info*) malloc(max_rsp * sizeof(inquiry_info));
291
292        num_rsp = hci_inquiry(dev_id, len, max_rsp, NULL, &ii, flags);
293        if (num_rsp < 0)
294                logging_error("hci_inquiry");
295
296        for (i = 0; i < num_rsp; i++) {
297                /*
298                 ba2str(&(ii + i)->bdaddr, addr);
299                 memset(name, 0, sizeof(name));
300                 if (hci_read_remote_name(sock, &(ii + i)->bdaddr, sizeof(name),
301                 name, 0) < 0)
302                 strcpy(name, "[unknown]");
303                 printf("%s  %s\n", addr, name);
304                 */
305
306                address = (ii + i)->bdaddr;
307
308                logging_info("Peer found.")
309
310                // TODO: sdp_search can be very slow, fork it!
311                sdp_search(address);
312        }
313
314        free(ii);
315        close(sock);
316
317        logging_info("Next scan in 20 seconds");
318
319        scan_timer_.expires_from_now(boost::posix_time::seconds(20));
320        scan_timer_.async_wait(boost::bind(&BluetoothSdp::bt_scan, this));
321}
322
323void BluetoothSdp::sdp_search(bdaddr_t target) {
324
325        /*
326         * Searches target for SDP records with the SpoVnet uuid
327         * and extracts its info attributes.
328         */
329
330        int status;
331        uuid_t svc_uuid;
332        sdp_list_t *response_list, *search_list, *attrid_list;
333        sdp_session_t *session = 0;
334        uint32_t range = 0x0000ffff;
335        uint8_t port = 0;
336        bdaddr_t any_addr = (bdaddr_t) { {0, 0, 0, 0, 0, 0}};
337
338        // prepare the buffers for the attributes
339        char name[256], info1[256], info2[256], info3[256];
340
341        // connect to the SDP server running on the remote machine
342        session = sdp_connect(&any_addr, &target, 0);
343
344        if (session == 0) {
345                // TODO: put the remote's address here
346                logging_error("Failed to connect to remote SDP server.");
347                return;
348        }
349
350        sdp_uuid128_create(&svc_uuid, &svc_uuid_int);
351        search_list = sdp_list_append(0, &svc_uuid);
352        attrid_list = sdp_list_append(0, &range);
353
354        // get a list of service records that have UUID uuid_
355        response_list = NULL;
356        status = sdp_service_search_attr_req(session, search_list,
357                        SDP_ATTR_REQ_RANGE, attrid_list, &response_list);
358
359        if (status == 0) {
360                sdp_list_t *proto_list = NULL;
361                sdp_list_t *r = response_list;
362
363                // go through each of the service records
364                for (; r; r = r->next) {
365                        sdp_record_t *rec = (sdp_record_t*) r->data;
366
367                        // get a list of the protocol sequences
368                        if (sdp_get_access_protos(rec, &proto_list) == 0) {
369
370                                // get the RFCOMM port number
371                                port = sdp_get_proto_port(proto_list, RFCOMM_UUID);
372
373                                sdp_list_free(proto_list, 0);
374
375                                sdp_get_string_attr(rec, SDP_ATTR_SPOVNET_NAME, (char*)&name, 256);
376                                sdp_get_string_attr(rec, SDP_ATTR_SPOVNET_INFO1, (char*)&name, 256);
377                                sdp_get_string_attr(rec, SDP_ATTR_SPOVNET_INFO2, (char*)&name, 256);
378                                sdp_get_string_attr(rec, SDP_ATTR_SPOVNET_INFO3, (char*)&name, 256);
379
380                                logging_info("Remote peer name is: " << name);
381                                logging_info("Remote peer info1 is: " << info1);
382                                logging_info("Remote peer info2 is: " << info2);
383                                logging_info("Remote peer info3 is: " << info3);
384                                //TODO: callback here + extract info's and stuff
385                        }
386                        sdp_record_free(rec);
387                }
388        }
389        sdp_list_free(response_list, 0);
390        sdp_list_free(search_list, 0);
391        sdp_list_free(attrid_list, 0);
392        sdp_close(session);
393
394}
395
396#endif // HAVE_BLUETOOTH_BLUETOOTH_H
397
398}} //namespace ariba, utility
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