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-rw-r--r--src/zeroconf/AvahiPoll.cxx146
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diff --git a/src/zeroconf/AvahiPoll.cxx b/src/zeroconf/AvahiPoll.cxx
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+++ b/src/zeroconf/AvahiPoll.cxx
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+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "AvahiPoll.hxx"
+#include "event/SocketMonitor.hxx"
+#include "event/TimeoutMonitor.hxx"
+
+static unsigned
+FromAvahiWatchEvent(AvahiWatchEvent e)
+{
+ return (e & AVAHI_WATCH_IN ? SocketMonitor::READ : 0) |
+ (e & AVAHI_WATCH_OUT ? SocketMonitor::WRITE : 0) |
+ (e & AVAHI_WATCH_ERR ? SocketMonitor::ERROR : 0) |
+ (e & AVAHI_WATCH_HUP ? SocketMonitor::HANGUP : 0);
+}
+
+static AvahiWatchEvent
+ToAvahiWatchEvent(unsigned e)
+{
+ return AvahiWatchEvent((e & SocketMonitor::READ ? AVAHI_WATCH_IN : 0) |
+ (e & SocketMonitor::WRITE ? AVAHI_WATCH_OUT : 0) |
+ (e & SocketMonitor::ERROR ? AVAHI_WATCH_ERR : 0) |
+ (e & SocketMonitor::HANGUP ? AVAHI_WATCH_HUP : 0));
+}
+
+struct AvahiWatch final : private SocketMonitor {
+private:
+ const AvahiWatchCallback callback;
+ void *const userdata;
+
+ AvahiWatchEvent received;
+
+public:
+ AvahiWatch(int _fd, AvahiWatchEvent _event,
+ AvahiWatchCallback _callback, void *_userdata,
+ EventLoop &_loop)
+ :SocketMonitor(_fd, _loop),
+ callback(_callback), userdata(_userdata),
+ received(AvahiWatchEvent(0)) {
+ Schedule(FromAvahiWatchEvent(_event));
+ }
+
+ static void WatchUpdate(AvahiWatch *w, AvahiWatchEvent event) {
+ w->Schedule(FromAvahiWatchEvent(event));
+ }
+
+ static AvahiWatchEvent WatchGetEvents(AvahiWatch *w) {
+ return w->received;
+ }
+
+ static void WatchFree(AvahiWatch *w) {
+ delete w;
+ }
+
+protected:
+ virtual bool OnSocketReady(unsigned flags) {
+ received = ToAvahiWatchEvent(flags);
+ callback(this, Get(), received, userdata);
+ received = AvahiWatchEvent(0);
+ return true;
+ }
+};
+
+static constexpr unsigned
+TimevalToMS(const timeval &tv)
+{
+ return tv.tv_sec * 1000 + (tv.tv_usec + 500) / 1000;
+}
+
+struct AvahiTimeout final : private TimeoutMonitor {
+private:
+ const AvahiTimeoutCallback callback;
+ void *const userdata;
+
+public:
+ AvahiTimeout(const struct timeval *tv,
+ AvahiTimeoutCallback _callback, void *_userdata,
+ EventLoop &_loop)
+ :TimeoutMonitor(_loop),
+ callback(_callback), userdata(_userdata) {
+ if (tv != nullptr)
+ Schedule(TimevalToMS(*tv));
+ }
+
+ static void TimeoutUpdate(AvahiTimeout *t, const struct timeval *tv) {
+ if (tv != nullptr)
+ t->Schedule(TimevalToMS(*tv));
+ else
+ t->Cancel();
+ }
+
+ static void TimeoutFree(AvahiTimeout *t) {
+ delete t;
+ }
+
+protected:
+ virtual void OnTimeout() {
+ callback(this, userdata);
+ }
+};
+
+MyAvahiPoll::MyAvahiPoll(EventLoop &_loop):event_loop(_loop)
+{
+ watch_new = WatchNew;
+ watch_update = AvahiWatch::WatchUpdate;
+ watch_get_events = AvahiWatch::WatchGetEvents;
+ watch_free = AvahiWatch::WatchFree;
+ timeout_new = TimeoutNew;
+ timeout_update = AvahiTimeout::TimeoutUpdate;
+ timeout_free = AvahiTimeout::TimeoutFree;
+}
+
+AvahiWatch *
+MyAvahiPoll::WatchNew(const AvahiPoll *api, int fd, AvahiWatchEvent event,
+ AvahiWatchCallback callback, void *userdata) {
+ const MyAvahiPoll &poll = *(const MyAvahiPoll *)api;
+
+ return new AvahiWatch(fd, event, callback, userdata,
+ poll.event_loop);
+}
+
+AvahiTimeout *
+MyAvahiPoll::TimeoutNew(const AvahiPoll *api, const struct timeval *tv,
+ AvahiTimeoutCallback callback, void *userdata) {
+ const MyAvahiPoll &poll = *(const MyAvahiPoll *)api;
+
+ return new AvahiTimeout(tv, callback, userdata,
+ poll.event_loop);
+}