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// SparkleShare, a collaboration and sharing tool.
// Copyright (C) 2010 Hylke Bons <hylkebons@gmail.com>
//
// 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 3 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, see <http://www.gnu.org/licenses/>.
using System;
using System.Text;
using System.Threading;
using System.Security.Cryptography;
using Meebey.SmartIrc4net;
namespace SparkleLib {
public class SparkleListenerIrc : SparkleListenerBase {
private Thread thread;
private IrcClient client;
private string nick;
public SparkleListenerIrc (string server, string folder_identifier, string announcements) :
base (server, folder_identifier, announcements)
{
base.server = server;
// Try to get a uniqueish nickname
this.nick = SHA1 (DateTime.Now.ToString ("ffffff") + "sparkles");
// Most irc servers don't allow nicknames starting
// with a number, so prefix an alphabetic character
this.nick = "s" + this.nick.Substring (0, 7);
base.channels.Add ("#" + folder_identifier);
this.client = new IrcClient () {
PingTimeout = 180,
PingInterval = 60
};
this.client.OnConnected += delegate {
base.is_connecting = false;
OnConnected ();
};
this.client.OnDisconnected += delegate {
base.is_connecting = false;
OnDisconnected ();
};
this.client.OnError += delegate {
base.is_connecting = false;
OnDisconnected ();
};
this.client.OnChannelMessage += delegate (object o, IrcEventArgs args) {
string message = args.Data.Message.Trim ();
string folder_id = args.Data.Channel.Substring (1); // remove the starting hash
OnAnnouncement (new SparkleAnnouncement (folder_id, message));
};
}
public override bool IsConnected {
get {
return this.client.IsConnected;
}
}
// Starts a new thread and listens to the channel
public override void Connect ()
{
SparkleHelpers.DebugInfo ("ListenerIrc", "Connecting to " + Server);
base.is_connecting = true;
this.thread = new Thread (
new ThreadStart (delegate {
try {
// Connect, login, and join the channel
this.client.Connect (new string [] {base.server}, 6667);
this.client.Login (this.nick, this.nick);
foreach (string channel in base.channels) {
SparkleHelpers.DebugInfo ("ListenerIrc", "Joining channel " + channel);
this.client.RfcJoin (channel);
}
// List to the channel, this blocks the thread
this.client.Listen ();
// Disconnect when we time out
this.client.Disconnect ();
} catch (ConnectionException e) {
SparkleHelpers.DebugInfo ("ListenerIrc", "Could not connect to " + Server + ": " + e.Message);
}
})
);
this.thread.Start ();
}
public override void AlsoListenTo (string folder_identifier)
{
string channel = "#" + folder_identifier;
if (!base.channels.Contains (channel)) {
base.channels.Add (channel);
if (IsConnected) {
SparkleHelpers.DebugInfo ("ListenerIrc", "Joining channel " + channel);
this.client.RfcJoin (channel);
}
}
}
public override void Announce (SparkleAnnouncement announcement)
{
string channel = "#" + announcement.FolderIdentifier;
this.client.SendMessage (SendType.Message, channel, announcement.Message);
// Also announce to ourselves for debugging purposes
// base.OnAnnouncement (announcement);
}
public override void Dispose ()
{
this.thread.Abort ();
this.thread.Join ();
base.Dispose ();
}
// Creates a SHA-1 hash of input
private string SHA1 (string s)
{
SHA1 sha1 = new SHA1CryptoServiceProvider ();
Byte[] bytes = ASCIIEncoding.Default.GetBytes (s);
Byte[] encoded_bytes = sha1.ComputeHash (bytes);
return BitConverter.ToString (encoded_bytes).ToLower ().Replace ("-", "");
}
}
}
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