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comparison: libpurple/protocols/bonjour/dns_sd.c

libpurple/protocols/bonjour/dns_sd.c

branch
release-2.1.0
changeset 18110
ca7451f64bdf
parent 18109
93a1d6658446
parent 17616
89da87084d2f
child 18111
afb39fa5ca87
equal deleted inserted replaced
18109:93a1d6658446 18110:ca7451f64bdf
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 functions */
25
26 static sw_result HOWL_API
27 _publish_reply(sw_discovery discovery, sw_discovery_oid oid,
28 sw_discovery_publish_status status, sw_opaque extra)
29 {
30 purple_debug_warning("bonjour", "_publish_reply --> Start\n");
31
32 /* Check the answer from the mDNS daemon */
33 switch (status)
34 {
35 case SW_DISCOVERY_PUBLISH_STARTED :
36 purple_debug_info("bonjour", "_publish_reply --> Service started\n");
37 break;
38 case SW_DISCOVERY_PUBLISH_STOPPED :
39 purple_debug_info("bonjour", "_publish_reply --> Service stopped\n");
40 break;
41 case SW_DISCOVERY_PUBLISH_NAME_COLLISION :
42 purple_debug_info("bonjour", "_publish_reply --> Name collision\n");
43 break;
44 case SW_DISCOVERY_PUBLISH_INVALID :
45 purple_debug_info("bonjour", "_publish_reply --> Service invalid\n");
46 break;
47 }
48
49 return SW_OKAY;
50 }
51
52 static sw_result HOWL_API
53 _resolve_reply(sw_discovery discovery, sw_discovery_oid oid,
54 sw_uint32 interface_index, sw_const_string name,
55 sw_const_string type, sw_const_string domain,
56 sw_ipv4_address address, sw_port port,
57 sw_octets text_record, sw_ulong text_record_len,
58 sw_opaque extra)
59 {
60 BonjourBuddy *buddy;
61 PurpleAccount *account = (PurpleAccount*)extra;
62 gchar *txtvers = NULL;
63 gchar *version = NULL;
64 gchar *first = NULL;
65 gchar *phsh = NULL;
66 gchar *status = NULL;
67 gchar *email = NULL;
68 gchar *last = NULL;
69 gchar *jid = NULL;
70 gchar *AIM = NULL;
71 gchar *vc = NULL;
72 gchar *msg = NULL;
73 gint address_length = 16;
74 gchar *ip = NULL;
75 sw_text_record_iterator iterator;
76 char key[SW_TEXT_RECORD_MAX_LEN];
77 char value[SW_TEXT_RECORD_MAX_LEN];
78 sw_uint32 value_length;
79
80 sw_discovery_cancel(discovery, oid);
81
82 /* Get the ip as a string */
83 ip = malloc(address_length);
84 sw_ipv4_address_name(address, ip, address_length);
85
86 /* Obtain the parameters from the text_record */
87 if ((text_record_len > 0) && (text_record) && (*text_record != '\0'))
88 {
89 sw_text_record_iterator_init(&iterator, text_record, text_record_len);
90 while (sw_text_record_iterator_next(iterator, key, (sw_octet *)value, &value_length) == SW_OKAY)
91 {
92 /* Compare the keys with the possible ones and save them on */
93 /* the appropiate place of the buddy_list */
94 if (strcmp(key, "txtvers") == 0) {
95 txtvers = g_strdup(value);
96 } else if (strcmp(key, "version") == 0) {
97 version = g_strdup(value);
98 } else if (strcmp(key, "1st") == 0) {
99 first = g_strdup(value);
100 } else if (strcmp(key, "status") == 0) {
101 status = g_strdup(value);
102 } else if (strcmp(key, "email") == 0) {
103 email = g_strdup(value);
104 } else if (strcmp(key, "last") == 0) {
105 last = g_strdup(value);
106 } else if (strcmp(key, "jid") == 0) {
107 jid = g_strdup(value);
108 } else if (strcmp(key, "AIM") == 0) {
109 AIM = g_strdup(value);
110 } else if (strcmp(key, "vc") == 0) {
111 vc = g_strdup(value);
112 } else if (strcmp(key, "phsh") == 0) {
113 phsh = g_strdup(value);
114 } else if (strcmp(key, "msg") == 0) {
115 msg = g_strdup(value);
116 }
117 }
118 }
119
120 /* Put the parameters of the text_record in a buddy and add the buddy to */
121 /* the buddy list */
122 buddy = bonjour_buddy_new(name, first, port, phsh,
123 status, email, last, jid, AIM, vc, ip, msg);
124
125 if (bonjour_buddy_check(buddy) == FALSE)
126 {
127 bonjour_buddy_delete(buddy);
128 return SW_DISCOVERY_E_UNKNOWN;
129 }
130
131 /* Add or update the buddy in our buddy list */
132 bonjour_buddy_add_to_purple(account, buddy);
133
134 /* Free all the temporal strings */
135 g_free(txtvers);
136 g_free(version);
137 g_free(first);
138 g_free(last);
139 g_free(status);
140 g_free(email);
141 g_free(jid);
142 g_free(AIM);
143 g_free(vc);
144 g_free(phsh);
145 g_free(msg);
146
147 return SW_OKAY;
148 }
149
150 static sw_result HOWL_API
151 _browser_reply(sw_discovery discovery, sw_discovery_oid oid,
152 sw_discovery_browse_status status,
153 sw_uint32 interface_index, sw_const_string name,
154 sw_const_string type, sw_const_string domain,
155 sw_opaque_t extra)
156 {
157 sw_discovery_resolve_id rid;
158 PurpleAccount *account = (PurpleAccount*)extra;
159 PurpleBuddy *gb = NULL;
160
161 switch (status)
162 {
163 case SW_DISCOVERY_BROWSE_INVALID:
164 purple_debug_warning("bonjour", "_browser_reply --> Invalid\n");
165 break;
166 case SW_DISCOVERY_BROWSE_RELEASE:
167 purple_debug_warning("bonjour", "_browser_reply --> Release\n");
168 break;
169 case SW_DISCOVERY_BROWSE_ADD_DOMAIN:
170 purple_debug_warning("bonjour", "_browser_reply --> Add domain\n");
171 break;
172 case SW_DISCOVERY_BROWSE_ADD_DEFAULT_DOMAIN:
173 purple_debug_warning("bonjour", "_browser_reply --> Add default domain\n");
174 break;
175 case SW_DISCOVERY_BROWSE_REMOVE_DOMAIN:
176 purple_debug_warning("bonjour", "_browser_reply --> Remove domain\n");
177 break;
178 case SW_DISCOVERY_BROWSE_ADD_SERVICE:
179 /* A new peer has joined the network and uses iChat bonjour */
180 purple_debug_info("bonjour", "_browser_reply --> Add service\n");
181 if (g_ascii_strcasecmp(name, account->username) != 0)
182 {
183 if (sw_discovery_resolve(discovery, interface_index, name, type,
184 domain, _resolve_reply, extra, &rid) != SW_OKAY)
185 {
186 purple_debug_warning("bonjour", "_browser_reply --> Cannot send resolve\n");
187 }
188 }
189 break;
190 case SW_DISCOVERY_BROWSE_REMOVE_SERVICE:
191 purple_debug_info("bonjour", "_browser_reply --> Remove service\n");
192 gb = purple_find_buddy((PurpleAccount*)extra, name);
193 if (gb != NULL)
194 {
195 bonjour_buddy_delete(gb->proto_data);
196 purple_blist_remove_buddy(gb);
197 }
198 break;
199 case SW_DISCOVERY_BROWSE_RESOLVED:
200 purple_debug_info("bonjour", "_browse_reply --> Resolved\n");
201 break;
202 default:
203 break;
204 }
205
206 return SW_OKAY;
207 }
208
209 static int
210 _dns_sd_publish(BonjourDnsSd *data, PublishType type)
211 {
212 sw_text_record dns_data;
213 sw_result publish_result = SW_OKAY;
214 char portstring[6];
215
216 /* Fill the data for the service */
217 if (sw_text_record_init(&dns_data) != SW_OKAY)
218 {
219 purple_debug_error("bonjour", "Unable to initialize the data for the mDNS.\n");
220 return -1;
221 }
222
223 /* Convert the port to a string */
224 snprintf(portstring, sizeof(portstring), "%d", data->port_p2pj);
225
226 /* Publish standard records */
227 sw_text_record_add_key_and_string_value(dns_data, "txtvers", data->txtvers);
228 sw_text_record_add_key_and_string_value(dns_data, "version", data->version);
229 sw_text_record_add_key_and_string_value(dns_data, "1st", data->first);
230 sw_text_record_add_key_and_string_value(dns_data, "last", data->last);
231 sw_text_record_add_key_and_string_value(dns_data, "port.p2pj", portstring);
232 sw_text_record_add_key_and_string_value(dns_data, "phsh", data->phsh);
233 sw_text_record_add_key_and_string_value(dns_data, "status", data->status);
234 sw_text_record_add_key_and_string_value(dns_data, "vc", data->vc);
235
236 /* Publish extra records */
237 if ((data->email != NULL) && (*data->email != '\0'))
238 sw_text_record_add_key_and_string_value(dns_data, "email", data->email);
239
240 if ((data->jid != NULL) && (*data->jid != '\0'))
241 sw_text_record_add_key_and_string_value(dns_data, "jid", data->jid);
242
243 if ((data->AIM != NULL) && (*data->AIM != '\0'))
244 sw_text_record_add_key_and_string_value(dns_data, "AIM", data->AIM);
245
246 if ((data->msg != NULL) && (*data->msg != '\0'))
247 sw_text_record_add_key_and_string_value(dns_data, "msg", data->msg);
248
249 /* Publish the service */
250 switch (type)
251 {
252 case PUBLISH_START:
253 publish_result = sw_discovery_publish(data->session, 0, data->name, ICHAT_SERVICE, NULL,
254 NULL, data->port_p2pj, sw_text_record_bytes(dns_data), sw_text_record_len(dns_data),
255 _publish_reply, NULL, &data->session_id);
256 break;
257 case PUBLISH_UPDATE:
258 publish_result = sw_discovery_publish_update(data->session, data->session_id,
259 sw_text_record_bytes(dns_data), sw_text_record_len(dns_data));
260 break;
261 }
262 if (publish_result != SW_OKAY)
263 {
264 purple_debug_error("bonjour", "Unable to publish or change the status of the _presence._tcp service.\n");
265 return -1;
266 }
267
268 /* Free the memory used by temp data */
269 sw_text_record_fina(dns_data);
270
271 return 0;
272 }
273
274 static void
275 _dns_sd_handle_packets(gpointer data, gint source, PurpleInputCondition condition)
276 {
277 sw_discovery_read_socket((sw_discovery)data);
278 }
279
280 /* End private functions */
281
282 /**
283 * Allocate space for the dns-sd data.
284 */
285 BonjourDnsSd *
286 bonjour_dns_sd_new()
287 {
288 BonjourDnsSd *data = g_new0(BonjourDnsSd, 1);
289
290 return data;
291 }
292
293 /**
294 * Deallocate the space of the dns-sd data.
295 */
296 void
297 bonjour_dns_sd_free(BonjourDnsSd *data)
298 {
299 g_free(data->first);
300 g_free(data->last);
301 g_free(data->email);
302 g_free(data);
303 }
304
305 /**
306 * Send a new dns-sd packet updating our status.
307 */
308 void
309 bonjour_dns_sd_send_status(BonjourDnsSd *data, const char *status, const char *status_message)
310 {
311 g_free(data->status);
312 g_free(data->msg);
313
314 data->status = g_strdup(status);
315 data->msg = g_strdup(status_message);
316
317 /* Update our text record with the new status */
318 _dns_sd_publish(data, PUBLISH_UPDATE); /* <--We must control the errors */
319 }
320
321 /**
322 * Advertise our presence within the dns-sd daemon and start browsing
323 * for other bonjour peers.
324 */
325 gboolean
326 bonjour_dns_sd_start(BonjourDnsSd *data)
327 {
328 PurpleAccount *account;
329 PurpleConnection *gc;
330 gint dns_sd_socket;
331 sw_discovery_oid session_id;
332
333 account = data->account;
334 gc = purple_account_get_connection(account);
335
336 /* Initialize the dns-sd data and session */
337 if (sw_discovery_init(&data->session) != SW_OKAY)
338 {
339 purple_debug_error("bonjour", "Unable to initialize an mDNS session.\n");
340
341 /* In Avahi, sw_discovery_init frees data->session but doesn't clear it */
342 data->session = NULL;
343
344 return FALSE;
345 }
346
347 /* Publish our bonjour IM client at the mDNS daemon */
348 _dns_sd_publish(data, PUBLISH_START); /* <--We must control the errors */
349
350 /* Advise the daemon that we are waiting for connections */
351 if (sw_discovery_browse(data->session, 0, ICHAT_SERVICE, NULL, _browser_reply,
352 data->account, &session_id) != SW_OKAY)
353 {
354 purple_debug_error("bonjour", "Unable to get service.");
355 return FALSE;
356 }
357
358 /* Get the socket that communicates with the mDNS daemon and bind it to a */
359 /* callback that will handle the dns_sd packets */
360 dns_sd_socket = sw_discovery_socket(data->session);
361 gc->inpa = purple_input_add(dns_sd_socket, PURPLE_INPUT_READ,
362 _dns_sd_handle_packets, data->session);
363
364 return TRUE;
365 }
366
367 /**
368 * Unregister the "_presence._tcp" service at the mDNS daemon.
369 */
370 void
371 bonjour_dns_sd_stop(BonjourDnsSd *data)
372 {
373 PurpleAccount *account;
374 PurpleConnection *gc;
375
376 if (data->session == NULL)
377 return;
378
379 sw_discovery_cancel(data->session, data->session_id);
380
381 account = data->account;
382 gc = purple_account_get_connection(account);
383 purple_input_remove(gc->inpa);
384
385 g_free(data->session);
386 data->session = NULL;
387 }

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