Add banned keywords feature

Author: Ruoshi.Ling

README.md

@@ -78,7 +78,7 @@ var config = {
   serverPort: 80
 };
 
-// The channels wanna be sync messages. 
+// The channels wanna be sync messages.
 config.channels = {
   '#<IRC channel> [password, option]': '#<Slack channgel>',
   '#sample' : '#general'
@@ -90,12 +90,17 @@ config.users = {
   'ircuser': 'slackuser'
 };
 
-// Baned list of IRC Nicks
+// Baned list of IRC Nicks. Usually are bots.
 config.bannedIRCNicks = [
   '<IRC Nick>',
   'ircNick'
 ];
 
+// To filter messages has bad word or dirty word
+config.bannedKeywords = [
+  'keyword'
+];
+
 // -- Setting end on this line
 
 App( config ).start();

README_zh-tw.md

@@ -97,6 +97,11 @@ config.bannedIRCNicks = [
   'ircNick'
 ];
 
+// 關鍵字黑名單，擁有以下關鍵字的訊息將會被篩選掉。
+config.bannedKeywords = [
+  'keyword'
+];
+
 // -- 到此行結束設定。
 
 App( config ).start();

config.js.sample

@@ -23,4 +23,8 @@ config.bannedIRCNicks = [
   'ircNick'
 ];
 
+config.bannedKeywords = [
+  // 'keyword'
+];
+
 App( config ).start();

lib/irc-to-slack.js

@@ -10,7 +10,8 @@ var IrcToSlack = function(config) {
   }
 
   this.config = _.defaults(config, {
-    'bannedIRCNicks': []
+    'bannedIRCNicks': [],
+    'bannedKeywords': []
   });
 
   return this;
@@ -29,11 +30,18 @@ IrcToSlack.prototype._sentToSlack = function(type, from, to, message) {
   var avatars = this.config.avatarMap;
   var hasAvatar = false;
   var isNickExist = !!this.nameMap.getSlackNameByIrcNick(from);
+  var bannedKeywords = this.config.bannedKeywords;
 
   if (_.contains(this.config.bannedIRCNicks, username)) {
     return;
   }
 
+  for (var i=0,  len=bannedKeywords.length; i < len; i++) {
+    if (message.toLowerCase().indexOf(bannedKeywords[i].toLowerCase()) > -1) {
+      return;
+    }
+  }
+
   if (this.config.isMapName && isNickExist) {
     username = this.nameMap.getSlackNameByIrcNick(from);
     hasAvatar = typeof avatars[username] !== 'undefined';