From 6e544e0b4cda0e9fd896c3aebd398f7065f9c1a8 Mon Sep 17 00:00:00 2001
From: adnanel <adnanel94@gmail.com>
Date: Thu, 13 Jul 2023 15:08:38 +0200
Subject: [PATCH] leave all joined rooms when destroying session

---
 src/plugins/janus_textroom.c | 69 ++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)

diff --git a/src/plugins/janus_textroom.c b/src/plugins/janus_textroom.c
index 4d9d694559..f0fadccdd7 100644
--- a/src/plugins/janus_textroom.c
+++ b/src/plugins/janus_textroom.c
@@ -1157,6 +1157,75 @@ void janus_textroom_destroy_session(janus_plugin_session *handle, int *error) {
 		*error = -2;
 		return;
 	}
+	janus_mutex_lock(&session->mutex);
+	if(session->rooms) {
+		GHashTableIter iter;
+		gpointer value;
+		janus_mutex_lock(&rooms_mutex);
+		g_hash_table_iter_init(&iter, session->rooms);
+		while(g_hash_table_iter_next(&iter, NULL, &value)) {
+			janus_textroom_participant *participant = value;
+			janus_mutex_lock(&participant->mutex);
+			janus_refcount_increase(&participant->ref);
+			janus_textroom_room *textroom = participant->room;
+			if(textroom) {
+				janus_mutex_lock(&textroom->mutex);
+				janus_refcount_increase(&textroom->ref);
+				int *room_id_str = textroom->room_id_str;
+				int room_id = textroom->room_id;
+				g_hash_table_remove(session->rooms, string_ids ? (gpointer)room_id_str : (gpointer)&room_id);
+				g_hash_table_remove(textroom->participants, participant->username);
+				participant->session = NULL;
+				participant->room = NULL;
+
+				/* Notify all participants */
+				JANUS_LOG(LOG_VERB, "Notifying all participants about the new leave\n");
+				if(textroom->participants) {
+					/* Prepare event */
+					json_t *event = json_object();
+					json_object_set_new(event, "textroom", json_string("leave"));
+					json_object_set_new(event, "room", string_ids ? json_string(textroom->room_id_str) : json_integer(textroom->room_id));
+					json_object_set_new(event, "username", json_string(participant->username));
+					char *event_text = json_dumps(event, json_format);
+					json_decref(event);
+					if(event_text != NULL) {
+						janus_plugin_data data = { .label = NULL, .protocol = NULL, .binary = FALSE, .buffer = event_text, .length = strlen(event_text) };
+						gateway->relay_data(handle, &data);
+						/* Broadcast */
+						GHashTableIter iter;
+						gpointer value;
+						g_hash_table_iter_init(&iter, textroom->participants);
+						while(g_hash_table_iter_next(&iter, NULL, &value)) {
+							janus_textroom_participant *top = value;
+							if(top == participant)
+								continue;	/* Skip us */
+							janus_refcount_increase(&top->ref);
+							JANUS_LOG(LOG_VERB, "  >> To %s in %s\n", top->username, room_id_str);
+							gateway->relay_data(top->session->handle, &data);
+							janus_refcount_decrease(&top->ref);
+						}
+						free(event_text);
+					}
+				}
+				/* Also notify event handlers */
+				if(notify_events && gateway->events_is_enabled()) {
+					json_t *info = json_object();
+					json_object_set_new(info, "event", json_string("leave"));
+					json_object_set_new(info, "room", string_ids ? json_string(room_id_str) : json_integer(room_id));
+					json_object_set_new(info, "username", json_string(participant->username));
+					gateway->notify_event(&janus_textroom_plugin, session->handle, info);
+				}
+				janus_mutex_unlock(&textroom->mutex);
+				janus_refcount_decrease(&textroom->ref);
+				janus_textroom_participant_destroy(participant);
+			}
+			janus_refcount_decrease(&participant->ref);
+			janus_mutex_unlock(&participant->mutex);
+		}
+		janus_mutex_unlock(&rooms_mutex);
+	}
+	janus_mutex_unlock(&session->mutex);
+
 	JANUS_LOG(LOG_VERB, "Removing TextRoom session...\n");
 	janus_textroom_hangup_media_internal(handle);
 	g_hash_table_remove(sessions, handle);