core: fix a few asan reported issues and a coredump on exit (#6285)

* xwayland: add destructor to CXWM and free resource

the wl_event_resource was running upon destruction of the compositor
causing a null pointer segfault in onX11Event so ensure the event is
removed upon destruction, also free the memory allocated by
xcb_errors_context_new and finally call xcb_disconnect on the connection
to free the fd and its memory.

* hyprctl: dont leak the fd on destruction

add a destructor and properly free the fd on destruction

* eventloop: add destructor and free event source

properly free the wl_event_source upon destruction.

2 files changed, 8 insertions, 1 deletions

diff --git a/src/debug/HyprCtl.cpp b/src/debug/HyprCtl.cpp
index bbe5019a..4563c5a1 100644
--- a/src/debug/HyprCtl.cpp
+++ b/src/debug/HyprCtl.cpp
@@ -1625,6 +1625,11 @@ CHyprCtl::CHyprCtl() {
     startHyprCtlSocket();
 }
 
+CHyprCtl::~CHyprCtl() {
+    if (m_eventSource)
+        wl_event_source_remove(m_eventSource);
+}
+
 SP<SHyprCtlCommand> CHyprCtl::registerCommand(SHyprCtlCommand cmd) {
     return m_vCommands.emplace_back(makeShared<SHyprCtlCommand>(cmd));
 }
@@ -1805,5 +1810,5 @@ void CHyprCtl::startHyprCtlSocket() {
 
     Debug::log(LOG, "Hypr socket started at {}", socketPath);
 
-    wl_event_loop_add_fd(g_pCompositor->m_sWLEventLoop, m_iSocketFD, WL_EVENT_READABLE, hyprCtlFDTick, nullptr);
+    m_eventSource = wl_event_loop_add_fd(g_pCompositor->m_sWLEventLoop, m_iSocketFD, WL_EVENT_READABLE, hyprCtlFDTick, nullptr);
 }
diff --git a/src/debug/HyprCtl.hpp b/src/debug/HyprCtl.hpp
index b48ea26a..21a2c5f8 100644
--- a/src/debug/HyprCtl.hpp
+++ b/src/debug/HyprCtl.hpp
@@ -8,6 +8,7 @@
 class CHyprCtl {
   public:
     CHyprCtl();
+    ~CHyprCtl();
 
     std::string         makeDynamicCall(const std::string& input);
     SP<SHyprCtlCommand> registerCommand(SHyprCtlCommand cmd);
@@ -25,6 +26,7 @@ class CHyprCtl {
     void                             startHyprCtlSocket();
 
     std::vector<SP<SHyprCtlCommand>> m_vCommands;
+    wl_event_source*                 m_eventSource = nullptr;
 };
 
 inline std::unique_ptr<CHyprCtl> g_pHyprCtl;