flutter-auto: Work-around for key keyboard event crash

This is a work-around to still allowing key keyboard go through but
avoid passing an invalid messenger pointer to the flutter engine which
would ultimately crash flutter-auto. Initially we had a workaround to
avoid sending the key event altogether.

Bug-AGL: SPEC-5272
Change-Id: I4df9f298e26470b5edd039b31346e2dc8e788a01
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/30509
ci-image-boot-test: Jenkins Job builder account
ci-image-build: Jenkins Job builder account
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Tested-by: Jenkins Job builder account
Reviewed-by: Joel Winarske <joel.winarske@gmail.com>

2 files changed, 97 insertions, 0 deletions

diff --git a/meta-agl-flutter/recipes-graphics/toyota/files/0001-flutter_desktop-Remove-asio-post-call.patch b/meta-agl-flutter/recipes-graphics/toyota/files/0001-flutter_desktop-Remove-asio-post-call.patch
new file mode 100644
index 000000000..f9cfea44d
--- /dev/null
+++ b/meta-agl-flutter/recipes-graphics/toyota/files/0001-flutter_desktop-Remove-asio-post-call.patch
@@ -0,0 +1,94 @@
+From a69dfff93b41b30ae8e237817548baf50d0c1287 Mon Sep 17 00:00:00 2001
+From: Marius Vlad <marius.vlad@collabora.com>
+Date: Thu, 24 Oct 2024 14:45:35 +0300
+Subject: [PATCH] flutter_desktop: Remove asio::post call
+
+Do not dispatch/post the key event keycode using asio::post as that
+seems to cause crashes as the messenger pointer seems to be go out of
+scope or seems to be invalid.
+
+Bug-AGL: SPEC-5272
+Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
+---
+ shell/platform/homescreen/flutter_desktop.cc | 65 ++++++++++----------
+ 1 file changed, 31 insertions(+), 34 deletions(-)
+
+diff --git a/shell/platform/homescreen/flutter_desktop.cc b/shell/platform/homescreen/flutter_desktop.cc
+index bb5be4b..5d26dd9 100644
+--- a/shell/platform/homescreen/flutter_desktop.cc
++++ b/shell/platform/homescreen/flutter_desktop.cc
+@@ -161,40 +161,37 @@ std::future<bool> PostMessengerSendWithReply(
+     void* user_data) {
+   const auto promise(std::make_shared<std::promise<bool>>());
+   auto promise_future(promise->get_future());
+-  asio::post(*messenger->GetEngine()->platform_task_runner->GetStrandContext(),
+-             [&, promise, channel, message, message_size, reply, user_data]() {
+-               FlutterPlatformMessageResponseHandle* response_handle = nullptr;
+-               if (reply != nullptr && user_data != nullptr) {
+-                 const FlutterEngineResult result =
+-                     LibFlutterEngine->PlatformMessageCreateResponseHandle(
+-                         messenger->GetEngine()->flutter_engine, reply,
+-                         user_data, &response_handle);
+-                 if (result != kSuccess) {
+-                   spdlog::error("Failed to create response handle");
+-                   promise->set_value(false);
+-                   return;
+-                 }
+-               }
+-
+-               auto platform_message = std::make_unique<FlutterPlatformMessage>();
+-               platform_message->struct_size = sizeof(FlutterPlatformMessage);
+-               platform_message->channel = channel;
+-               platform_message->message = message;
+-               platform_message->message_size = message_size;
+-               platform_message->response_handle = response_handle;
+-
+-               const FlutterEngineResult message_result =
+-                   LibFlutterEngine->SendPlatformMessage(
+-                       messenger->GetEngine()->flutter_engine,
+-                       platform_message.release());
+-
+-               if (response_handle != nullptr) {
+-                 LibFlutterEngine->PlatformMessageReleaseResponseHandle(
+-                     messenger->GetEngine()->flutter_engine, response_handle);
+-               }
+-
+-               promise->set_value(message_result == kSuccess);
+-             });
++
++  FlutterPlatformMessageResponseHandle* response_handle = nullptr;
++  if (reply != nullptr && user_data != nullptr) {
++    const FlutterEngineResult result =
++        LibFlutterEngine->PlatformMessageCreateResponseHandle(
++            messenger->GetEngine()->flutter_engine, reply, user_data,
++            &response_handle);
++    if (result != kSuccess) {
++      spdlog::error("Failed to create response handle");
++      promise->set_value(false);
++      return promise_future;
++    }
++  }
++
++  auto platform_message = std::make_unique<FlutterPlatformMessage>();
++  platform_message->struct_size = sizeof(FlutterPlatformMessage);
++  platform_message->channel = channel;
++  platform_message->message = message;
++  platform_message->message_size = message_size;
++  platform_message->response_handle = response_handle;
++
++  const FlutterEngineResult message_result =
++      LibFlutterEngine->SendPlatformMessage(
++          messenger->GetEngine()->flutter_engine, platform_message.release());
++
++  if (response_handle != nullptr) {
++    LibFlutterEngine->PlatformMessageReleaseResponseHandle(
++        messenger->GetEngine()->flutter_engine, response_handle);
++  }
++
++  promise->set_value(message_result == kSuccess);
+   return promise_future;
+ }
+ 
+-- 
+2.43.0
+
diff --git a/meta-agl-flutter/recipes-graphics/toyota/flutter-auto_aglflutter.inc b/meta-agl-flutter/recipes-graphics/toyota/flutter-auto_aglflutter.inc
index 6c1503024..29c023fca 100644
--- a/meta-agl-flutter/recipes-graphics/toyota/flutter-auto_aglflutter.inc
+++ b/meta-agl-flutter/recipes-graphics/toyota/flutter-auto_aglflutter.inc
@@ -4,6 +4,9 @@ EGLCONFIG_FALLBACK = "${@bb.utils.contains_any('AGL_FEATURES', 'agl-rdp agl-kvm-
 SRC_URI:append:use-nxp-bsp = " file://0001-Disable-on_frame_base_surface-wl_surface_commit.patch"
 SRC_URI:append = " ${EGLCONFIG_FALLBACK}"
 
+# necessary to avoid crashing flutter-auto when a key keyboard event is emitted
+SRC_URI:append = " file://0001-flutter_desktop-Remove-asio-post-call.patch"
+
 # Disable WIP webview plugin on 32-bit ARM platforms for now, as build
 # failures have been seen on qemuarm and beaglebone.
 PACKAGECONFIG:remove:arm = "webview_flutter_view"