2 This file is part of avahi.
4 avahi is free software; you can redistribute it and/or modify it
5 under the terms of the GNU Lesser General Public License as
6 published by the Free Software Foundation; either version 2.1 of the
7 License, or (at your option) any later version.
9 avahi is distributed in the hope that it will be useful, but WITHOUT
10 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
12 Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with avahi; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
29 #include "dbus-watch-glue.h"
31 static AvahiWatchEvent translate_dbus_to_avahi(unsigned int f) {
32 AvahiWatchEvent e = 0;
34 if (f & DBUS_WATCH_READABLE)
36 if (f & DBUS_WATCH_WRITABLE)
38 if (f & DBUS_WATCH_ERROR)
40 if (f & DBUS_WATCH_HANGUP)
46 static unsigned int translate_avahi_to_dbus(AvahiWatchEvent e) {
49 if (e & AVAHI_WATCH_IN)
50 f |= DBUS_WATCH_READABLE;
51 if (e & AVAHI_WATCH_OUT)
52 f |= DBUS_WATCH_WRITABLE;
53 if (e & AVAHI_WATCH_ERR)
54 f |= DBUS_WATCH_ERROR;
55 if (e & AVAHI_WATCH_HUP)
56 f |= DBUS_WATCH_HANGUP;
62 DBusConnection *connection;
63 const AvahiPoll *poll_api;
64 AvahiTimeout *dispatch_timeout;
68 static ConnectionData *connection_data_ref(ConnectionData *d) {
76 static void connection_data_unref(ConnectionData *d) {
81 d->poll_api->timeout_free(d->dispatch_timeout);
86 static void request_dispatch(ConnectionData *d, int enable) {
87 static const struct timeval tv = { 0, 0 };
91 assert(dbus_connection_get_dispatch_status(d->connection) == DBUS_DISPATCH_DATA_REMAINS);
92 d->poll_api->timeout_update(d->dispatch_timeout, &tv);
94 d->poll_api->timeout_update(d->dispatch_timeout, NULL);
97 static void dispatch_timeout_callback(AvahiTimeout *t, void *userdata) {
98 ConnectionData *d = userdata;
102 connection_data_ref(d);
103 dbus_connection_ref(d->connection);
105 if (dbus_connection_dispatch(d->connection) == DBUS_DISPATCH_DATA_REMAINS)
106 /* If there's still data, request that this handler is called again */
107 request_dispatch(d, 1);
109 request_dispatch(d, 0);
111 dbus_connection_unref(d->connection);
112 connection_data_unref(d);
115 static void watch_callback(AvahiWatch *avahi_watch, AVAHI_GCC_UNUSED int fd, AvahiWatchEvent events, void *userdata) {
116 DBusWatch *dbus_watch = userdata;
121 dbus_watch_handle(dbus_watch, translate_avahi_to_dbus(events));
122 /* Ignore the return value */
125 static dbus_bool_t update_watch(const AvahiPoll *poll_api, DBusWatch *dbus_watch) {
126 AvahiWatch *avahi_watch;
131 avahi_watch = dbus_watch_get_data(dbus_watch);
133 b = dbus_watch_get_enabled(dbus_watch);
135 if (b && !avahi_watch) {
137 if (!(avahi_watch = poll_api->watch_new(
139 #if (DBUS_VERSION_MAJOR == 1 && DBUS_VERSION_MINOR == 1 && DBUS_VERSION_MICRO >= 1) || (DBUS_VERSION_MAJOR == 1 && DBUS_VERSION_MINOR > 1) || (DBUS_VERSION_MAJOR > 1)
140 dbus_watch_get_unix_fd(dbus_watch),
142 dbus_watch_get_fd(dbus_watch),
144 translate_dbus_to_avahi(dbus_watch_get_flags(dbus_watch)),
149 dbus_watch_set_data(dbus_watch, avahi_watch, NULL);
151 } else if (!b && avahi_watch) {
153 poll_api->watch_free(avahi_watch);
154 dbus_watch_set_data(dbus_watch, NULL, NULL);
156 } else if (avahi_watch) {
159 poll_api->watch_update(avahi_watch, dbus_watch_get_flags(dbus_watch));
165 static dbus_bool_t add_watch(DBusWatch *dbus_watch, void *userdata) {
166 ConnectionData *d = userdata;
171 return update_watch(d->poll_api, dbus_watch);
174 static void remove_watch(DBusWatch *dbus_watch, void *userdata) {
175 ConnectionData *d = userdata;
176 AvahiWatch *avahi_watch;
181 if ((avahi_watch = dbus_watch_get_data(dbus_watch))) {
182 d->poll_api->watch_free(avahi_watch);
183 dbus_watch_set_data(dbus_watch, NULL, NULL);
187 static void watch_toggled(DBusWatch *dbus_watch, void *userdata) {
188 ConnectionData *d = userdata;
193 update_watch(d->poll_api, dbus_watch);
196 typedef struct TimeoutData {
197 const AvahiPoll *poll_api;
198 AvahiTimeout *avahi_timeout;
199 DBusTimeout *dbus_timeout;
203 static TimeoutData* timeout_data_ref(TimeoutData *t) {
211 static void timeout_data_unref(TimeoutData *t) {
216 if (t->avahi_timeout)
217 t->poll_api->timeout_free(t->avahi_timeout);
223 static void update_timeout(TimeoutData *timeout) {
225 assert(timeout->ref >= 1);
227 if (dbus_timeout_get_enabled(timeout->dbus_timeout)) {
229 avahi_elapse_time(&tv, dbus_timeout_get_interval(timeout->dbus_timeout), 0);
230 timeout->poll_api->timeout_update(timeout->
233 timeout->poll_api->timeout_update(timeout->avahi_timeout, NULL);
237 static void timeout_callback(AvahiTimeout *avahi_timeout, void *userdata) {
238 TimeoutData *timeout = userdata;
240 assert(avahi_timeout);
243 timeout_data_ref(timeout);
245 dbus_timeout_handle(timeout->dbus_timeout);
246 /* Ignore the return value */
248 if (timeout->avahi_timeout)
249 update_timeout(timeout);
251 timeout_data_unref(timeout);
254 static dbus_bool_t add_timeout(DBusTimeout *dbus_timeout, void *userdata) {
255 TimeoutData *timeout;
256 ConnectionData *d = userdata;
260 assert(dbus_timeout);
263 if (!(timeout = avahi_new(TimeoutData, 1)))
266 timeout->dbus_timeout = dbus_timeout;
267 timeout->poll_api = d->poll_api;
270 if ((b = dbus_timeout_get_enabled(dbus_timeout)))
271 avahi_elapse_time(&tv, dbus_timeout_get_interval(dbus_timeout), 0);
273 if (!(timeout->avahi_timeout = d->poll_api->timeout_new(
282 dbus_timeout_set_data(dbus_timeout, timeout, (DBusFreeFunction) timeout_data_unref);
286 static void remove_timeout(DBusTimeout *dbus_timeout, void *userdata) {
287 ConnectionData *d = userdata;
288 TimeoutData *timeout;
290 assert(dbus_timeout);
293 timeout = dbus_timeout_get_data(dbus_timeout);
296 d->poll_api->timeout_free(timeout->avahi_timeout);
297 timeout->avahi_timeout = NULL;
300 static void timeout_toggled(DBusTimeout *dbus_timeout, AVAHI_GCC_UNUSED void *userdata) {
301 TimeoutData *timeout;
303 assert(dbus_timeout);
304 timeout = dbus_timeout_get_data(dbus_timeout);
307 update_timeout(timeout);
310 static void dispatch_status(AVAHI_GCC_UNUSED DBusConnection *connection, DBusDispatchStatus new_status, void *userdata) {
311 ConnectionData *d = userdata;
313 if (new_status == DBUS_DISPATCH_DATA_REMAINS)
314 request_dispatch(d, 1);
317 int avahi_dbus_connection_glue(DBusConnection *c, const AvahiPoll *poll_api) {
318 ConnectionData *d = NULL;
323 if (!(d = avahi_new(ConnectionData, 1)))
326 d->poll_api = poll_api;
330 if (!(d->dispatch_timeout = poll_api->timeout_new(poll_api, NULL, dispatch_timeout_callback, d)))
333 if (!(dbus_connection_set_watch_functions(c, add_watch, remove_watch, watch_toggled, connection_data_ref(d), (DBusFreeFunction)connection_data_unref)))
336 if (!(dbus_connection_set_timeout_functions(c, add_timeout, remove_timeout, timeout_toggled, connection_data_ref(d), (DBusFreeFunction)connection_data_unref)))
339 dbus_connection_set_dispatch_status_function(c, dispatch_status, connection_data_ref(d), (DBusFreeFunction)connection_data_unref);
341 if (dbus_connection_get_dispatch_status(c) == DBUS_DISPATCH_DATA_REMAINS)
342 request_dispatch(d, 1);
344 connection_data_unref(d);
351 d->poll_api->timeout_free(d->dispatch_timeout);