Make legacy sendxmpp config handling more robust.

parseconfig.go

@@ -123,21 +123,25 @@ func parseConfig(configPath string) (configuration, error) {
 			output.alias = column[1]
 		default:
 			// Try to parse legacy sendxmpp config files.
+			if len(column) >= defaultConfigColumnSep {
 				if strings.Contains(scanner.Text(), ";") {
 					output.username = strings.Split(column[0], ";")[0]
 					output.jserver = strings.Split(column[0], ";")[1]
 					output.password = column[1]
 				} else {
 					output.username = strings.Split(column[0], ":")[0]
-				jserver := strings.Split(column[0], "@")[1]
+					if strings.Contains(output.username, "@") {
+						jserver := strings.SplitAfter(output.username, "@")[1]
 						if len(jserver) < defaultLenServerConf {
 							log.Fatal("Couldn't parse config: ", column[0])
 						}
 						output.jserver = jserver
+					}
 					output.password = column[1]
 				}
 			}
 		}
+	}
 
 	// Check if the username is a valid JID
 	output.username, err = MarshalJID(output.username)