+++ /dev/null
-/***
- This file is part of avahi.
-
- avahi is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as
- published by the Free Software Foundation; either version 2.1 of the
- License, or (at your option) any later version.
-
- avahi is distributed in the hope that it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
- Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with avahi; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- USA.
-***/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <assert.h>
-#include <stdio.h>
-
-#include "malloc.h"
-#include "timeval.h"
-#include "dbus-watch-glue.h"
-
-static AvahiWatchEvent translate_dbus_to_avahi(unsigned int f) {
- AvahiWatchEvent e = 0;
-
- if (f & DBUS_WATCH_READABLE)
- e |= AVAHI_WATCH_IN;
- if (f & DBUS_WATCH_WRITABLE)
- e |= AVAHI_WATCH_OUT;
- if (f & DBUS_WATCH_ERROR)
- e |= AVAHI_WATCH_ERR;
- if (f & DBUS_WATCH_HANGUP)
- e |= AVAHI_WATCH_HUP;
-
- return e;
-}
-
-static unsigned int translate_avahi_to_dbus(AvahiWatchEvent e) {
- unsigned int f = 0;
-
- if (e & AVAHI_WATCH_IN)
- f |= DBUS_WATCH_READABLE;
- if (e & AVAHI_WATCH_OUT)
- f |= DBUS_WATCH_WRITABLE;
- if (e & AVAHI_WATCH_ERR)
- f |= DBUS_WATCH_ERROR;
- if (e & AVAHI_WATCH_HUP)
- f |= DBUS_WATCH_HANGUP;
-
- return f;
-}
-
-typedef struct {
- DBusConnection *connection;
- const AvahiPoll *poll_api;
- AvahiTimeout *dispatch_timeout;
- int ref;
-} ConnectionData;
-
-static ConnectionData *connection_data_ref(ConnectionData *d) {
- assert(d);
- assert(d->ref >= 1);
-
- d->ref++;
- return d;
-}
-
-static void connection_data_unref(ConnectionData *d) {
- assert(d);
- assert(d->ref >= 1);
-
- if (--d->ref <= 0) {
- d->poll_api->timeout_free(d->dispatch_timeout);
- avahi_free(d);
- }
-}
-
-static void request_dispatch(ConnectionData *d, int enable) {
- static const struct timeval tv = { 0, 0 };
- assert(d);
-
- if (enable) {
- assert(dbus_connection_get_dispatch_status(d->connection) == DBUS_DISPATCH_DATA_REMAINS);
- d->poll_api->timeout_update(d->dispatch_timeout, &tv);
- } else
- d->poll_api->timeout_update(d->dispatch_timeout, NULL);
-}
-
-static void dispatch_timeout_callback(AvahiTimeout *t, void *userdata) {
- ConnectionData *d = userdata;
- assert(t);
- assert(d);
-
- connection_data_ref(d);
- dbus_connection_ref(d->connection);
-
- if (dbus_connection_dispatch(d->connection) == DBUS_DISPATCH_DATA_REMAINS)
- /* If there's still data, request that this handler is called again */
- request_dispatch(d, 1);
- else
- request_dispatch(d, 0);
-
- dbus_connection_unref(d->connection);
- connection_data_unref(d);
-}
-
-static void watch_callback(AvahiWatch *avahi_watch, AVAHI_GCC_UNUSED int fd, AvahiWatchEvent events, void *userdata) {
- DBusWatch *dbus_watch = userdata;
-
- assert(avahi_watch);
- assert(dbus_watch);
-
- dbus_watch_handle(dbus_watch, translate_avahi_to_dbus(events));
- /* Ignore the return value */
-}
-
-static dbus_bool_t update_watch(const AvahiPoll *poll_api, DBusWatch *dbus_watch) {
- AvahiWatch *avahi_watch;
- dbus_bool_t b;
-
- assert(dbus_watch);
-
- avahi_watch = dbus_watch_get_data(dbus_watch);
-
- b = dbus_watch_get_enabled(dbus_watch);
-
- if (b && !avahi_watch) {
-
- if (!(avahi_watch = poll_api->watch_new(
- poll_api,
-#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)
- dbus_watch_get_unix_fd(dbus_watch),
-#else
- dbus_watch_get_fd(dbus_watch),
-#endif
- translate_dbus_to_avahi(dbus_watch_get_flags(dbus_watch)),
- watch_callback,
- dbus_watch)))
- return FALSE;
-
- dbus_watch_set_data(dbus_watch, avahi_watch, NULL);
-
- } else if (!b && avahi_watch) {
-
- poll_api->watch_free(avahi_watch);
- dbus_watch_set_data(dbus_watch, NULL, NULL);
-
- } else if (avahi_watch) {
-
- /* Update flags */
- poll_api->watch_update(avahi_watch, dbus_watch_get_flags(dbus_watch));
- }
-
- return TRUE;
-}
-
-static dbus_bool_t add_watch(DBusWatch *dbus_watch, void *userdata) {
- ConnectionData *d = userdata;
-
- assert(dbus_watch);
- assert(d);
-
- return update_watch(d->poll_api, dbus_watch);
-}
-
-static void remove_watch(DBusWatch *dbus_watch, void *userdata) {
- ConnectionData *d = userdata;
- AvahiWatch *avahi_watch;
-
- assert(dbus_watch);
- assert(d);
-
- if ((avahi_watch = dbus_watch_get_data(dbus_watch))) {
- d->poll_api->watch_free(avahi_watch);
- dbus_watch_set_data(dbus_watch, NULL, NULL);
- }
-}
-
-static void watch_toggled(DBusWatch *dbus_watch, void *userdata) {
- ConnectionData *d = userdata;
-
- assert(dbus_watch);
- assert(d);
-
- update_watch(d->poll_api, dbus_watch);
-}
-
-typedef struct TimeoutData {
- const AvahiPoll *poll_api;
- AvahiTimeout *avahi_timeout;
- DBusTimeout *dbus_timeout;
- int ref;
-} TimeoutData;
-
-static TimeoutData* timeout_data_ref(TimeoutData *t) {
- assert(t);
- assert(t->ref >= 1);
-
- t->ref++;
- return t;
-}
-
-static void timeout_data_unref(TimeoutData *t) {
- assert(t);
- assert(t->ref >= 1);
-
- if (--t->ref <= 0) {
- if (t->avahi_timeout)
- t->poll_api->timeout_free(t->avahi_timeout);
-
- avahi_free(t);
- }
-}
-
-static void update_timeout(TimeoutData *timeout) {
- assert(timeout);
- assert(timeout->ref >= 1);
-
- if (dbus_timeout_get_enabled(timeout->dbus_timeout)) {
- struct timeval tv;
- avahi_elapse_time(&tv, dbus_timeout_get_interval(timeout->dbus_timeout), 0);
- timeout->poll_api->timeout_update(timeout->
- avahi_timeout, &tv);
- } else
- timeout->poll_api->timeout_update(timeout->avahi_timeout, NULL);
-
-}
-
-static void timeout_callback(AvahiTimeout *avahi_timeout, void *userdata) {
- TimeoutData *timeout = userdata;
-
- assert(avahi_timeout);
- assert(timeout);
-
- timeout_data_ref(timeout);
-
- dbus_timeout_handle(timeout->dbus_timeout);
- /* Ignore the return value */
-
- if (timeout->avahi_timeout)
- update_timeout(timeout);
-
- timeout_data_unref(timeout);
-}
-
-static dbus_bool_t add_timeout(DBusTimeout *dbus_timeout, void *userdata) {
- TimeoutData *timeout;
- ConnectionData *d = userdata;
- struct timeval tv;
- dbus_bool_t b;
-
- assert(dbus_timeout);
- assert(d);
-
- if (!(timeout = avahi_new(TimeoutData, 1)))
- return FALSE;
-
- timeout->dbus_timeout = dbus_timeout;
- timeout->poll_api = d->poll_api;
- timeout->ref = 1;
-
- if ((b = dbus_timeout_get_enabled(dbus_timeout)))
- avahi_elapse_time(&tv, dbus_timeout_get_interval(dbus_timeout), 0);
-
- if (!(timeout->avahi_timeout = d->poll_api->timeout_new(
- d->poll_api,
- b ? &tv : NULL,
- timeout_callback,
- timeout))) {
- avahi_free(timeout);
- return FALSE;
- }
-
- dbus_timeout_set_data(dbus_timeout, timeout, (DBusFreeFunction) timeout_data_unref);
- return TRUE;
-}
-
-static void remove_timeout(DBusTimeout *dbus_timeout, void *userdata) {
- ConnectionData *d = userdata;
- TimeoutData *timeout;
-
- assert(dbus_timeout);
- assert(d);
-
- timeout = dbus_timeout_get_data(dbus_timeout);
- assert(timeout);
-
- d->poll_api->timeout_free(timeout->avahi_timeout);
- timeout->avahi_timeout = NULL;
-}
-
-static void timeout_toggled(DBusTimeout *dbus_timeout, AVAHI_GCC_UNUSED void *userdata) {
- TimeoutData *timeout;
-
- assert(dbus_timeout);
- timeout = dbus_timeout_get_data(dbus_timeout);
- assert(timeout);
-
- update_timeout(timeout);
-}
-
-static void dispatch_status(AVAHI_GCC_UNUSED DBusConnection *connection, DBusDispatchStatus new_status, void *userdata) {
- ConnectionData *d = userdata;
-
- if (new_status == DBUS_DISPATCH_DATA_REMAINS)
- request_dispatch(d, 1);
- }
-
-int avahi_dbus_connection_glue(DBusConnection *c, const AvahiPoll *poll_api) {
- ConnectionData *d = NULL;
-
- assert(c);
- assert(poll_api);
-
- if (!(d = avahi_new(ConnectionData, 1)))
- goto fail;;
-
- d->poll_api = poll_api;
- d->connection = c;
- d->ref = 1;
-
- if (!(d->dispatch_timeout = poll_api->timeout_new(poll_api, NULL, dispatch_timeout_callback, d)))
- goto fail;
-
- if (!(dbus_connection_set_watch_functions(c, add_watch, remove_watch, watch_toggled, connection_data_ref(d), (DBusFreeFunction)connection_data_unref)))
- goto fail;
-
- if (!(dbus_connection_set_timeout_functions(c, add_timeout, remove_timeout, timeout_toggled, connection_data_ref(d), (DBusFreeFunction)connection_data_unref)))
- goto fail;
-
- dbus_connection_set_dispatch_status_function(c, dispatch_status, connection_data_ref(d), (DBusFreeFunction)connection_data_unref);
-
- if (dbus_connection_get_dispatch_status(c) == DBUS_DISPATCH_DATA_REMAINS)
- request_dispatch(d, 1);
-
- connection_data_unref(d);
-
- return 0;
-
-fail:
-
- if (d) {
- d->poll_api->timeout_free(d->dispatch_timeout);
-
- avahi_free(d);
- }
-
- return -1;
-}
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