From 386c174736e3085745f9249b4a2d83b2e527d62f Mon Sep 17 00:00:00 2001
From: Nikias Bassen
Date: Sun, 7 May 2023 16:11:31 +0200
Subject: Make sure DEVICE_ADD events are sent to additional event listeners

Thanks to @parov0z for the suggestion.
---
 src/libirecovery.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/libirecovery.c b/src/libirecovery.c
index 6edb948..5b70c08 100644
--- a/src/libirecovery.c
+++ b/src/libirecovery.c
@@ -1853,6 +1853,7 @@ struct irecv_device_event_context {
 
 struct irecv_usb_device_info {
 	struct irecv_device_info device_info;
+	enum irecv_mode mode;
 	uint32_t location;
 	int alive;
 };
@@ -2044,6 +2045,7 @@ static void* _irecv_handle_device_add(void *userdata)
 	memcpy(&(usb_dev_info->device_info), &(client_loc.device_info), sizeof(struct irecv_device_info));
 	usb_dev_info->location = location;
 	usb_dev_info->alive = 1;
+	usb_dev_info->mode = client_loc.mode;
 
 	collection_add(&devices, usb_dev_info);
 
@@ -2434,9 +2436,9 @@ irecv_error_t irecv_device_event_subscribe(irecv_device_event_context_t *context
 
 	mutex_lock(&listener_mutex);
 	collection_add(&listeners, _context);
-	mutex_unlock(&listener_mutex);
 
 	if (th_event_handler == THREAD_T_NULL || !thread_alive(th_event_handler)) {
+		mutex_unlock(&listener_mutex);
 		struct _irecv_event_handler_info info;
 		cond_init(&info.startup_cond);
 		mutex_init(&info.startup_mutex);
@@ -2454,6 +2456,18 @@ irecv_error_t irecv_device_event_subscribe(irecv_device_event_context_t *context
 		mutex_unlock(&info.startup_mutex);
 		cond_destroy(&info.startup_cond);
 		mutex_destroy(&info.startup_mutex);
+	} else {
+		/* send DEVICE_ADD events to the new listener */
+		FOREACH(struct irecv_usb_device_info *devinfo, &devices) {
+			if (devinfo && devinfo->alive) {
+				irecv_device_event_t ev;
+				ev.type = IRECV_DEVICE_ADD;
+				ev.mode = devinfo->mode;
+				ev.device_info = &(devinfo->device_info);
+				_context->callback(&ev, _context->user_data);
+			}
+		} ENDFOREACH
+		mutex_unlock(&listener_mutex);
 	}
 
 	*context = _context;
-- 
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