feat: Add an option to randomize the username used to login to join t…

…he conference. (#535)

doc/example_xmpp_envs.conf

@@ -29,6 +29,8 @@
                 port = 6222
                 username = "username"
                 password = "password"
+                // Whether to use `username` as is or add a random suffix to it.
+                randomize-username = false
             }
 
             // An (optional) MUC configuration where we'll

src/main/kotlin/org/jitsi/jibri/config/JibriConfig.kt

@@ -33,7 +33,8 @@ data class XmppCredentials(
     val domain: String = "",
     val port: Int? = null,
     val username: String = "",
-    val password: String = ""
+    val password: String = "",
+    val randomizeUsername: Boolean = false
 ) {
     override fun toString(): String {
         return "XmppCredentials(domain=$domain, port=$port, username=$username, password=*****)"
@@ -44,7 +45,8 @@ fun com.typesafe.config.Config.toXmppCredentials(): XmppCredentials = XmppCreden
     domain = getString("domain"),
     port = if (hasPath("port")) getInt("port") else null,
     username = getString("username"),
-    password = getString("password")
+    password = getString("password"),
+    randomizeUsername = getBoolean("randomize-username")
 )
 
 data class XmppMuc(

src/main/kotlin/org/jitsi/jibri/selenium/JibriSelenium.kt

@@ -32,6 +32,7 @@ import org.jitsi.jibri.util.StatusPublisher
 import org.jitsi.jibri.util.TaskPools
 import org.jitsi.jibri.util.extensions.scheduleAtFixedRate
 import org.jitsi.jibri.util.getLoggerWithHandler
+import org.jitsi.jibri.util.randomAlphaNum
 import org.jitsi.metaconfig.config
 import org.jitsi.metaconfig.from
 import org.jitsi.utils.logging2.Logger
@@ -307,8 +308,12 @@ class JibriSelenium(
                     "callStatsUserName" to callStatsUsername
                 )
                 xmppCredentials?.let {
-                    localStorageValues["xmpp_username_override"] =
-                        "${xmppCredentials.username}@${xmppCredentials.domain}"
+                    val username = if (xmppCredentials.randomizeUsername) {
+                        "${xmppCredentials.username}-${randomAlphaNum(8)}"
+                    } else {
+                        xmppCredentials.username
+                    }
+                    localStorageValues["xmpp_username_override"] = "$username@${xmppCredentials.domain}"
                     localStorageValues["xmpp_password_override"] = xmppCredentials.password
                 }
                 passcode?.let {

src/main/kotlin/org/jitsi/jibri/util/RandomUtils.kt

@@ -0,0 +1,23 @@
+/*
+ * Copyright @ 2024 - present 8x8, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jitsi.jibri.util
+
+import kotlin.random.Random
+
+val alphaNum = ('a'..'z') + ('0'..'9')
+fun randomAlphaNum(len: Int): String {
+    return List(len) { alphaNum[Random.nextInt(0, alphaNum.size)] }.joinToString("")
+}