From 2b408f630dcf6376c49d7889c701b6722486b1d9 Mon Sep 17 00:00:00 2001
From: Cory Chaplin <elephantman@europnet.org>
Date: Sun, 19 Mar 2017 10:46:31 +0100
Subject: [PATCH 1/2] Add banlist management

---
 src/channel.js |  5 +++++
 src/client.js  | 27 +++++++++++++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/src/channel.js b/src/channel.js
index bde7ae31..7207d18b 100644
--- a/src/channel.js
+++ b/src/channel.js
@@ -17,6 +17,11 @@ function IrcChannel(irc_client, channel_name, key) {
     // this.action = _.partial(irc_client.action.bind(irc_client), channel_name);
     this.part = _.partial(irc_client.part.bind(irc_client), channel_name);
     this.join = _.partial(irc_client.join.bind(irc_client), channel_name);
+    this.mode = _.partial(irc_client.mode.bind(irc_client), channel_name);
+    this.banlist = _.partial(irc_client.banlist.bind(irc_client), channel_name);
+    this.ban = _.partial(irc_client.ban.bind(irc_client), channel_name);
+    this.unban = _.partial(irc_client.unban.bind(irc_client), channel_name);
+
 
     this.users = [];
     irc_client.on('userlist', function(event) {
diff --git a/src/client.js b/src/client.js
index 0f31a2d8..e0230ca2 100644
--- a/src/client.js
+++ b/src/client.js
@@ -376,6 +376,33 @@ IrcClient.prototype.part = function(channel, message) {
     this.raw(raw);
 };
 
+IrcClient.prototype.mode = function(channel, mode, arguments) {
+    var raw = ['MODE', channel, mode];
+
+    if (arguments) {
+        raw.push(arguments);
+    }
+
+    this.raw(raw);
+};
+
+IrcClient.prototype.banlist = function(channel, mode) {
+    var raw = ['MODE', channel, 'b'];
+
+    this.raw(raw);
+};
+
+IrcClient.prototype.ban = function(channel, mask) {
+    var raw = ['MODE', channel, '+b', mask];
+
+    this.raw(raw);
+};
+
+IrcClient.prototype.unban = function(channel, mask) {
+    var raw = ['MODE', channel, '-b', mask];
+
+    this.raw(raw);
+};
 
 IrcClient.prototype.setTopic = function(channel, newTopic) {
     this.raw('TOPIC', channel, newTopic);

From 30ab6223db90f88b8e1318734c383bc2ac64335f Mon Sep 17 00:00:00 2001
From: Cory Chaplin <elephantman@europnet.org>
Date: Sun, 19 Mar 2017 23:11:21 +0100
Subject: [PATCH 2/2] Timed bans example middleware

---
 examples/timed-bans.js | 78 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 examples/timed-bans.js

diff --git a/examples/timed-bans.js b/examples/timed-bans.js
new file mode 100644
index 00000000..910a7449
--- /dev/null
+++ b/examples/timed-bans.js
@@ -0,0 +1,78 @@
+var IRC = require('../');
+
+var bot = new IRC.Client();
+bot.use(TimedBanMiddleware());
+bot.connect({
+    host: 'irc.network.org',
+    nick: 'unban-bot',
+    gecos: 'unban-bot',
+    account: 'unban-bot',
+    password: '***'
+});
+
+// Config
+var ignore_extbans = true, // Set true to ignore extended bans
+    chanlist = ['#testoz', '#testouille'], // List of channels for the bot
+    ban_ttl = 10800; // Ban expiry duration (in seconds)
+
+
+
+function TimedBanMiddleware() {
+    var channels = [];
+
+    setInterval(getBanlist, 60000);
+
+    return function(client, raw_events, parsed_events) {
+        parsed_events.use(theMiddleware);
+    }
+
+    function getBanlist() {
+        for(channel_index in channels) {
+            bot.banlist(channels[channel_index].name);
+        }
+    }
+
+    function expireBans(event, chan) {
+        var time = Math.floor(Date.now() / 1000);
+
+        if(ignore_extbans) {
+            var extban_regex = new RegExp("~?[a-zA-Z]{1}:");
+        }
+
+        for(ban_index in event.bans) {
+            var ban_mask = event.bans[ban_index].banned,
+                ban_time = event.bans[ban_index].banned_at;
+
+            // Check if ban has expired
+            if((time - ban_time) > ban_ttl) {
+                //console.log('EXPIRED:', chan.name, ban_mask);
+                // Only unban if the ban is not an exception type
+                if(ignore_extbans === false || (ignore_extbans && !extban_regex.test(ban_mask))) {
+                    chan.unban(ban_mask);
+                }
+            } else {
+                // Ban is still valid, do nothing
+                //console.log('NOT EXPIRED:', ban_mask);
+            }
+        }
+    }
+
+
+    function theMiddleware(command, event, client, next) {
+        if (command === 'registered') {
+            for(channel_index in chanlist) {
+                chan = bot.channel(chanlist[channel_index]);
+                chan.join();
+                channels[chan.name] = chan;
+                // Collect banlist on join
+                bot.banlist(channels[chanlist[channel_index]].name);
+            }
+        }
+
+        if (command === 'banlist') {
+            expireBans(event, channels[event.channel]);
+        }
+
+        next();
+    }
+}