220 lines
8.2 KiB
C#
220 lines
8.2 KiB
C#
// SparkleShare, a collaboration and sharing tool.
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// Copyright (C) 2010 Hylke Bons <hylkebons@gmail.com>
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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using System;
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using System.Text;
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using System.Threading;
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using System.Security.Cryptography;
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using Meebey.SmartIrc4net;
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namespace SparkleLib {
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public class SparkleListenerIrc : SparkleListenerBase {
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private Thread thread;
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private IrcClient client;
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private string nick;
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private string announcements_password;
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private bool allow_passwordless_join;
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public SparkleListenerIrc (Uri server, string folder_identifier) :
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base (server, folder_identifier)
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{
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// Try to get a uniqueish nickname
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this.nick = SHA1 (DateTime.Now.ToString ("ffffff") + "sparkles");
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// Most irc servers don't allow nicknames starting
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// with a number, so prefix an alphabetic character
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this.nick = "s" + this.nick.Substring (0, 7);
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// Optional password to make the channel access more safe
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this.announcements_password =
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SparkleConfig.DefaultConfig.GetConfigOption ("announcements_password");
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// Option to allow access to channel when no password is defined
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try {
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this.allow_passwordless_join = Convert.ToBoolean (
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SparkleConfig.DefaultConfig.GetConfigOption ("allow_passwordless_join"));
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} catch (Exception) {
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this.allow_passwordless_join = true;
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}
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base.channels.Add ("#" + folder_identifier);
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this.client = new IrcClient () {
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PingTimeout = 180,
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PingInterval = 60
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};
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string proxy = Environment.GetEnvironmentVariable ("http_proxy");
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Uri proxy_uri = null;
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if (!String.IsNullOrEmpty (proxy) &&
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Uri.TryCreate (proxy, UriKind.Absolute, out proxy_uri)) {
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#if __MonoCS__
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if (proxy_uri.Scheme == "http") {
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this.client.ProxyType = ProxyType.Http;
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this.client.ProxyHost = proxy_uri.Host;
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this.client.ProxyPort = proxy_uri.Port;
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}
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#endif
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}
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this.client.OnConnected += delegate {
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base.is_connecting = false;
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OnConnected ();
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};
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this.client.OnDisconnected += delegate {
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base.is_connecting = false;
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OnDisconnected ();
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};
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this.client.OnError += delegate {
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base.is_connecting = false;
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OnDisconnected ();
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};
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this.client.OnChannelMessage += delegate (object o, IrcEventArgs args) {
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string message = args.Data.Message.Trim ();
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string folder_id = args.Data.Channel.Substring (1); // remove the starting hash
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OnAnnouncement (new SparkleAnnouncement (folder_id, message));
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};
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}
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public override bool IsConnected {
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get {
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return this.client.IsConnected;
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}
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}
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// Starts a new thread and listens to the channel
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public override void Connect ()
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{
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SparkleHelpers.DebugInfo ("ListenerIrc", "Connecting to " + Server);
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base.is_connecting = true;
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this.thread = new Thread (
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new ThreadStart (delegate {
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try {
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// Connect, login, and join the channel
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int port = base.server.Port;
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if (port < 0)
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port = 6667;
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this.client.Connect (base.server.Host, port);
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this.client.Login (this.nick, this.nick, 8, this.nick);
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foreach (string channel in base.channels) {
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SparkleHelpers.DebugInfo ("ListenerIrc", "Joining channel " + channel);
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if (!string.IsNullOrEmpty (this.announcements_password)) {
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SparkleHelpers.DebugInfo ("ListenerIrc", "Password set to access the channel");
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this.client.RfcJoin (channel, this.announcements_password);
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this.client.RfcMode (channel, "+k " + this.announcements_password);
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} else {
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if (this.allow_passwordless_join) {
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SparkleHelpers.DebugInfo ("ListenerIrc", "Accessing a dangerous channel, change the setting to not access");
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this.client.RfcJoin (channel);
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} else {
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SparkleHelpers.DebugInfo ("ListenerIrc", "Dangerous channel, change the setting to access");
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}
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}
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this.client.RfcMode (channel, "+s");
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}
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// List to the channel, this blocks the thread
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this.client.Listen ();
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// Disconnect when we time out
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this.client.Disconnect ();
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} catch (ConnectionException e) {
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SparkleHelpers.DebugInfo ("ListenerIrc", "Could not connect to " + Server + ": " + e.Message);
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}
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})
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);
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this.thread.Start ();
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}
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public override void AlsoListenTo (string folder_identifier)
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{
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string channel = "#" + folder_identifier;
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if (!base.channels.Contains (channel)) {
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base.channels.Add (channel);
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if (IsConnected) {
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SparkleHelpers.DebugInfo ("ListenerIrc", "Joining channel " + channel);
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if (this.announcements_password != null) {
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SparkleHelpers.DebugInfo ("ListenerIrc", "Password set to access the channel");
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this.client.RfcJoin (channel, this.announcements_password);
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this.client.RfcMode (channel, "+k " + this.announcements_password);
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} else {
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if (allow_passwordless_join) {
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SparkleHelpers.DebugInfo ("ListenerIrc", "Accessing a dangerous channel change the setting to not access");
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this.client.RfcJoin (channel);
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} else {
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SparkleHelpers.DebugInfo ("ListenerIrc", "Dangerous channel, change the setting to access");
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}
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}
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this.client.RfcMode (channel, "+s");
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}
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}
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}
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public override void Announce (SparkleAnnouncement announcement)
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{
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string channel = "#" + announcement.FolderIdentifier;
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this.client.SendMessage (SendType.Message, channel, announcement.Message);
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// Also announce to ourselves for debugging purposes
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// base.OnAnnouncement (announcement);
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}
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public override void Dispose ()
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{
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this.thread.Abort ();
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this.thread.Join ();
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base.Dispose ();
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}
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// Creates a SHA-1 hash of input
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private string SHA1 (string s)
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{
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SHA1 sha1 = new SHA1CryptoServiceProvider ();
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Byte[] bytes = ASCIIEncoding.Default.GetBytes (s);
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Byte[] encoded_bytes = sha1.ComputeHash (bytes);
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return BitConverter.ToString (encoded_bytes).ToLower ().Replace ("-", "");
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}
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}
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}
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