Fix charset conversion for invalid charsets

lib/irc.js

@@ -1026,18 +1026,25 @@ Client.prototype.ctcp = function(to, type, text) {
 };
 
 Client.prototype.convertEncoding = function(str) {
-    var self = this;
+    var self = this, out = str;
 
     if (self.opt.encoding) {
-        var charsetDetector = require('node-icu-charset-detector');
-        var Iconv = require('iconv').Iconv;
-        var charset = charsetDetector.detectCharset(str).toString();
-        var to = new Iconv(charset, self.opt.encoding);
-
-        return to.convert(str);
-    } else {
-        return str;
+        try {
+            var charsetDetector = require('node-icu-charset-detector');
+            var Iconv = require('iconv').Iconv;
+            var charset = charsetDetector.detectCharset(str);
+            var converter = new Iconv(charset.toString(), self.opt.encoding);
+
+            out = converter.convert(str);
+        } catch (err) {
+            if (self.opt.debug) {
+                util.log('\u001b[01;31mERROR: ' + err + '\u001b[0m');
+                util.inspect({ str: str, charset: charset });
+            }
+        }
     }
+
+    return out;
 };
 // blatantly stolen from irssi's splitlong.pl. Thanks, Bjoern Krombholz!
 Client.prototype._updateMaxLineLength = function() {

package.json

@@ -12,7 +12,8 @@
     "xAndy <[email protected]>",
     "Mischa Spiegelmock <[email protected]>",
     "Justin Gallardo <[email protected]>",
-    "Chris Nehren <[email protected]>"
+    "Chris Nehren <[email protected]>",
+    "Henri Niemeläinen <[email protected]>"
   ],
   "repository": {
     "type": "git",

test/data/fixtures.json

@@ -147,5 +147,13 @@
 			"nick is as expected after 433",
 			"maxLineLength is as expected after 433"
 		]
-	}
+	},
+    "convert-encoding": {
+        "causesException": [
+            ":ubottu!ubottu@ubuntu/bot/ubottu MODE #ubuntu -bo *!~Brian@* ubottu\r\n",
+            "Elizabeth",
+            ":sblack1!~sblack1@unaffiliated/sblack1 NICK :sblack\r\n",
+            ":[email protected] PRIVMSG #ubuntu :ThinkPad\r\n"
+        ]
+    }
 }

test/test-convert-encoding.js

@@ -0,0 +1,53 @@
+var irc = require('../lib/irc');
+var test = require('tape');
+var testHelpers = require('./helpers');
+var checks = testHelpers.getFixtures('convert-encoding');
+var bindTo = { opt: { encoding: 'utf-8' } };
+
+test('irc.Client.convertEncoding old', function(assert) {
+    var convertEncoding = function(str) {
+        var self = this;
+
+        if (self.opt.encoding) {
+            var charsetDetector = require('node-icu-charset-detector');
+            var Iconv = require('iconv').Iconv;
+            var charset = charsetDetector.detectCharset(str).toString();
+            var to = new Iconv(charset, self.opt.encoding);
+
+            return to.convert(str);
+        } else {
+            return str;
+        }
+    }.bind(bindTo);
+
+    checks.causesException.forEach(function iterate(line) {
+        var causedException = false;
+        try {
+            convertEncoding(line);
+        } catch (e) {
+            causedException = true;
+        }
+
+        assert.equal(causedException, true, line + ' caused exception');
+    });
+
+    assert.end();
+});
+
+test('irc.Client.convertEncoding', function(assert) {
+    var convertEncoding = irc.Client.prototype.convertEncoding.bind(bindTo);
+
+    checks.causesException.forEach(function iterate(line) {
+        var causedException = false;
+
+        try {
+            convertEncoding(line);
+        } catch (e) {
+            causedException = true;
+        }
+
+        assert.equal(causedException, false, line + ' didn\'t cause exception');
+    });
+
+    assert.end();
+});