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comparison: src/protocols/bonjour/dns_sd.c

src/protocols/bonjour/dns_sd.c

branch
gaim
changeset 20470
77693555855f
parent 13071
b98e72d4089a
parent 20469
b2836a24d81e
child 20471
1966704b3e42
equal deleted inserted replaced
13071:b98e72d4089a 20470:77693555855f
1 /*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU Library General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
15 */
16
17 #include <string.h>
18
19 #include "dns_sd.h"
20 #include "bonjour.h"
21 #include "buddy.h"
22 #include "debug.h"
23
24 /* Private data */
25
26 typedef struct _dns_sd_packet
27 {
28 gchar *name;
29 gchar *txtvers;
30 gchar *version;
31 gchar *first;
32 gchar *last;
33 gint port_p2pj;
34 gchar *phsh;
35 gchar *status;
36 gchar *message;
37 gchar *email;
38 gchar *vc;
39 gchar *jid;
40 gchar *AIM;
41 } dns_sd_packet;
42
43 /* End private data */
44
45 /* Private functions */
46
47 static sw_result HOWL_API
48 _publish_reply(sw_discovery discovery, sw_discovery_oid oid,
49 sw_discovery_publish_status status, sw_opaque extra)
50 {
51 gaim_debug_warning("bonjour", "_publish_reply --> Start\n");
52
53 /* Check the answer from the mDNS daemon */
54 switch (status)
55 {
56 case SW_DISCOVERY_PUBLISH_STARTED :
57 gaim_debug_info("bonjour", "_publish_reply --> Service started\n");
58 break;
59 case SW_DISCOVERY_PUBLISH_STOPPED :
60 gaim_debug_info("bonjour", "_publish_reply --> Service stopped\n");
61 break;
62 case SW_DISCOVERY_PUBLISH_NAME_COLLISION :
63 gaim_debug_info("bonjour", "_publish_reply --> Name collision\n");
64 break;
65 case SW_DISCOVERY_PUBLISH_INVALID :
66 gaim_debug_info("bonjour", "_publish_reply --> Service invalid\n");
67 break;
68 }
69
70 return SW_OKAY;
71 }
72
73 static sw_result HOWL_API
74 _resolve_reply(sw_discovery discovery, sw_discovery_oid oid,
75 sw_uint32 interface_index, sw_const_string name,
76 sw_const_string type, sw_const_string domain,
77 sw_ipv4_address address, sw_port port,
78 sw_octets text_record, sw_ulong text_record_len,
79 sw_opaque extra)
80 {
81 BonjourBuddy *buddy;
82 GaimAccount *account = (GaimAccount*)extra;
83 gchar *txtvers = NULL;
84 gchar *version = NULL;
85 gchar *first = NULL;
86 gint port_p2pj = -1;
87 gchar *phsh = NULL;
88 gchar *status = NULL;
89 gchar *email = NULL;
90 gchar *last = NULL;
91 gchar *jid = NULL;
92 gchar *AIM = NULL;
93 gchar *vc = NULL;
94 gchar *msg = NULL;
95 gint address_length = 16;
96 gchar *ip = NULL;
97 sw_text_record_iterator iterator;
98 char key[SW_TEXT_RECORD_MAX_LEN];
99 char value[SW_TEXT_RECORD_MAX_LEN];
100 sw_uint32 value_length;
101
102 sw_discovery_cancel(discovery, oid);
103
104 /* Get the ip as a string */
105 ip = malloc(address_length);
106 sw_ipv4_address_name(address, ip, address_length);
107
108 /* Obtain the parameters from the text_record */
109 if ((text_record_len > 0) && (text_record) && (*text_record != '\0'))
110 {
111 sw_text_record_iterator_init(&iterator, text_record, text_record_len);
112 while (sw_text_record_iterator_next(iterator, key, (sw_octet *)value, &value_length) == SW_OKAY)
113 {
114 /* Compare the keys with the possible ones and save them on */
115 /* the appropiate place of the buddy_list */
116 if (strcmp(key, "txtvers") == 0) {
117 txtvers = g_strdup(value);
118 } else if (strcmp(key, "version") == 0) {
119 version = g_strdup(value);
120 } else if (strcmp(key, "1st") == 0) {
121 first = g_strdup(value);
122 } else if (strcmp(key, "port.p2pj") == 0) {
123 port_p2pj = atoi(value);
124 } else if (strcmp(key, "status") == 0) {
125 status = g_strdup(value);
126 } else if (strcmp(key, "email") == 0) {
127 email = g_strdup(value);
128 } else if (strcmp(key, "last") == 0) {
129 last = g_strdup(value);
130 } else if (strcmp(key, "jid") == 0) {
131 jid = g_strdup(value);
132 } else if (strcmp(key, "AIM") == 0) {
133 AIM = g_strdup(value);
134 } else if (strcmp(key, "vc") == 0) {
135 vc = g_strdup(value);
136 } else if (strcmp(key, "phsh") == 0) {
137 phsh = g_strdup(value);
138 } else if (strcmp(key, "msg") == 0) {
139 msg = g_strdup(value);
140 }
141 }
142 }
143
144 /* Put the parameters of the text_record in a buddy and add the buddy to */
145 /* the buddy list */
146 buddy = bonjour_buddy_new((gchar *)name, first, port_p2pj, phsh,
147 status, email, last, jid, AIM, vc, ip, msg);
148
149 if (bonjour_buddy_check(buddy) == FALSE)
150 {
151 return SW_DISCOVERY_E_UNKNOWN;
152 }
153
154 /* Add or update the buddy in our buddy list */
155 bonjour_buddy_add_to_gaim(account, buddy);
156
157 /* Free all the temporal strings */
158 g_free(txtvers);
159 g_free(version);
160 g_free(first);
161 g_free(last);
162 g_free(status);
163 g_free(email);
164 g_free(jid);
165 g_free(AIM);
166 g_free(vc);
167 g_free(phsh);
168 g_free(msg);
169
170 return SW_OKAY;
171 }
172
173 static sw_result HOWL_API
174 _browser_reply(sw_discovery discovery, sw_discovery_oid oid,
175 sw_discovery_browse_status status,
176 sw_uint32 interface_index, sw_const_string name,
177 sw_const_string type, sw_const_string domain,
178 sw_opaque_t extra)
179 {
180 sw_discovery_resolve_id rid;
181 GaimAccount *account = (GaimAccount*)extra;
182 GaimBuddy *gb = NULL;
183
184 switch (status)
185 {
186 case SW_DISCOVERY_BROWSE_INVALID:
187 gaim_debug_warning("bonjour", "_browser_reply --> Invalid\n");
188 break;
189 case SW_DISCOVERY_BROWSE_RELEASE:
190 gaim_debug_warning("bonjour", "_browser_reply --> Release\n");
191 break;
192 case SW_DISCOVERY_BROWSE_ADD_DOMAIN:
193 gaim_debug_warning("bonjour", "_browser_reply --> Add domain\n");
194 break;
195 case SW_DISCOVERY_BROWSE_ADD_DEFAULT_DOMAIN:
196 gaim_debug_warning("bonjour", "_browser_reply --> Add default domain\n");
197 break;
198 case SW_DISCOVERY_BROWSE_REMOVE_DOMAIN:
199 gaim_debug_warning("bonjour", "_browser_reply --> Remove domain\n");
200 break;
201 case SW_DISCOVERY_BROWSE_ADD_SERVICE:
202 /* A new peer has join the network and uses iChat bonjour */
203 gaim_debug_info("bonjour", "_browser_reply --> Add service\n");
204 if (g_ascii_strcasecmp(name, account->username) != 0)
205 {
206 if (sw_discovery_resolve(discovery, interface_index, name, type,
207 domain, _resolve_reply, extra, &rid) != SW_OKAY)
208 {
209 gaim_debug_warning("bonjour", "_browser_reply --> Cannot send resolve\n");
210 }
211 }
212 break;
213 case SW_DISCOVERY_BROWSE_REMOVE_SERVICE:
214 gaim_debug_info("bonjour", "_browser_reply --> Remove service\n");
215 gb = gaim_find_buddy((GaimAccount*)extra, name);
216 if (gb != NULL)
217 {
218 bonjour_buddy_delete(gb->proto_data);
219 gaim_blist_remove_buddy(gb);
220 }
221 break;
222 case SW_DISCOVERY_BROWSE_RESOLVED:
223 gaim_debug_info("bonjour", "_browse_reply --> Resolved\n");
224 break;
225 default:
226 break;
227 }
228
229 return SW_OKAY;
230 }
231
232 static int
233 _dns_sd_publish(BonjourDnsSd *data, PublishType type)
234 {
235 sw_text_record dns_data;
236 sw_result publish_result = SW_OKAY;
237
238 /* Fill the data for the service */
239 if (sw_text_record_init(&dns_data) != SW_OKAY)
240 {
241 gaim_debug_error("bonjour", "Unable to initialize the data for the mDNS.\n");
242 return -1;
243 }
244
245 sw_text_record_add_key_and_string_value(dns_data, "txtvers", data->txtvers);
246 sw_text_record_add_key_and_string_value(dns_data, "version", data->version);
247 sw_text_record_add_key_and_string_value(dns_data, "1st", data->first);
248 sw_text_record_add_key_and_string_value(dns_data, "last", data->last);
249 /* sw_text_record_add_key_and_string_value(dns_data, "port.p2pj", itoa(data->port_p2pj)); */
250 sw_text_record_add_key_and_string_value(dns_data, "port.p2pj", BONJOUR_DEFAULT_PORT);
251 sw_text_record_add_key_and_string_value(dns_data, "phsh", data->phsh);
252 sw_text_record_add_key_and_string_value(dns_data, "status", data->status);
253 sw_text_record_add_key_and_string_value(dns_data, "msg", data->msg);
254 sw_text_record_add_key_and_string_value(dns_data, "email", data->email);
255 sw_text_record_add_key_and_string_value(dns_data, "vc", data->vc);
256 sw_text_record_add_key_and_string_value(dns_data, "jid", data->jid);
257 sw_text_record_add_key_and_string_value(dns_data, "AIM", data->AIM);
258
259 /* Publish the service */
260 switch (type)
261 {
262 case PUBLISH_START:
263 publish_result = sw_discovery_publish(data->session, 0, data->name, ICHAT_SERVICE, NULL,
264 NULL, data->port_p2pj, sw_text_record_bytes(dns_data), sw_text_record_len(dns_data),
265 _publish_reply, NULL, &data->session_id);
266 break;
267 case PUBLISH_UPDATE:
268 publish_result = sw_discovery_publish_update(data->session, data->session_id,
269 sw_text_record_bytes(dns_data), sw_text_record_len(dns_data));
270 break;
271 }
272 if (publish_result != SW_OKAY)
273 {
274 gaim_debug_error("bonjour", "Unable to publish or change the status of the _presence._tcp service.");
275 return -1;
276 }
277
278 /* Free the memory used by temp data */
279 sw_text_record_fina(dns_data);
280
281 return 0;
282 }
283
284 static void
285 _dns_sd_handle_packets(gpointer data, gint source, GaimInputCondition condition)
286 {
287 sw_discovery_read_socket((sw_discovery)data);
288 }
289
290 /* End private functions */
291
292 /**
293 * Allocate space for the dns-sd data.
294 */
295 BonjourDnsSd *
296 bonjour_dns_sd_new()
297 {
298 BonjourDnsSd *data = g_new0(BonjourDnsSd, 1);
299
300 return data;
301 }
302
303 /**
304 * Deallocate the space of the dns-sd data.
305 */
306 void
307 bonjour_dns_sd_free(BonjourDnsSd *data)
308 {
309 g_free(data->first);
310 g_free(data->last);
311 g_free(data->email);
312 g_free(data);
313 }
314
315 /**
316 * Send a new dns-sd packet updating our status.
317 */
318 void
319 bonjour_dns_sd_send_status(BonjourDnsSd *data, const char *status, const char *status_message)
320 {
321 g_free(data->status);
322 g_free(data->msg);
323
324 data->status = g_strdup(status);
325 data->msg = g_strdup(status_message);
326
327 /* Update our text record with the new status */
328 _dns_sd_publish(data, PUBLISH_UPDATE); /* <--We must control the errors */
329 }
330
331 /**
332 * Advertise our presence within the dns-sd daemon and start browsing
333 * for other bonjour peers.
334 */
335 gboolean
336 bonjour_dns_sd_start(BonjourDnsSd *data)
337 {
338 GaimAccount *account;
339 GaimConnection *gc;
340 gint dns_sd_socket;
341 sw_discovery_oid session_id;
342
343 account = data->account;
344 gc = gaim_account_get_connection(account);
345
346 /* Initialize the dns-sd data and session */
347 if (sw_discovery_init(&data->session) != SW_OKAY)
348 {
349 gaim_debug_error("bonjour", "Unable to initialize an mDNS session.\n");
350
351 /* In Avahi, sw_discovery_init frees data->session but doesn't clear it */
352 data->session = NULL;
353
354 return FALSE;
355 }
356
357 /* Publish our bonjour IM client at the mDNS daemon */
358 _dns_sd_publish(data, PUBLISH_START); /* <--We must control the errors */
359
360 /* Advise the daemon that we are waiting for connections */
361 if (sw_discovery_browse(data->session, 0, ICHAT_SERVICE, NULL, _browser_reply,
362 data->account, &session_id) != SW_OKAY)
363 {
364 gaim_debug_error("bonjour", "Unable to get service.");
365 return FALSE;
366 }
367
368 /* Get the socket that communicates with the mDNS daemon and bind it to a */
369 /* callback that will handle the dns_sd packets */
370 dns_sd_socket = sw_discovery_socket(data->session);
371 gc->inpa = gaim_input_add(dns_sd_socket, GAIM_INPUT_READ,
372 _dns_sd_handle_packets, data->session);
373
374 return TRUE;
375 }
376
377 /**
378 * Unregister the "_presence._tcp" service at the mDNS daemon.
379 */
380 void
381 bonjour_dns_sd_stop(BonjourDnsSd *data)
382 {
383 GaimAccount *account;
384 GaimConnection *gc;
385
386 if (data->session == NULL)
387 return;
388
389 sw_discovery_cancel(data->session, data->session_id);
390
391 account = data->account;
392 gc = gaim_account_get_connection(account);
393 gaim_input_remove(gc->inpa);
394
395 g_free(data->session);
396 data->session = NULL;
397 }

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