add $HOME/.local/share/slimevr to the possible dirs of the sockets (fix

#43) (#44)

* add $HOME/.local/share/slimevr to the possible dirs of the sockets (fix #43)

* Don't throw exception when socket fails to open

Co-authored-by: Uriel <[email protected]>

* Add path constants

Co-authored-by: Kitlith <[email protected]>

* Update src/bridge/bridge-unix-sockets.cpp

Co-authored-by: Kitlith <[email protected]>

* fixup!

---------

Co-authored-by: Kitlith <[email protected]>
Co-authored-by: Uriel <[email protected]>

src/bridge/bridge-unix-sockets.cpp

@@ -33,6 +33,8 @@
 #include <filesystem>
 
 #define TMP_DIR "/tmp"
+#define XDG_DATA_DIR_DEFAULT ".local/share"
+#define SLIMEVR_DATA_DIR "slimevr"
 #define SOCKET_NAME "SlimeVRDriver"
 
 namespace fs = std::filesystem;
@@ -156,12 +158,28 @@ bool sendBridgeMessage(messages::ProtobufMessage& message, SlimeVRDriver::VRDriv
 BridgeStatus runBridgeFrame(SlimeVRDriver::VRDriver& driver) {
     try {
         if (!client.IsOpen()) {
+            fs::path socket;
             // TODO: do this once in the constructor or something
             if(const char* ptr = std::getenv("XDG_RUNTIME_DIR")) {
                 const fs::path xdg_runtime = ptr;
-                client.Open((xdg_runtime / SOCKET_NAME).native());
-            } else {
-                client.Open((fs::path(TMP_DIR) / SOCKET_NAME).native());
+                socket = (xdg_runtime / SOCKET_NAME);
+            }
+            if(!fs::exists(socket)) {
+                socket = (fs::path(TMP_DIR) / SOCKET_NAME);
+            }
+            // try using home dir if the vrserver is run in a chroot like
+            if(!fs::exists(socket)) {
+                if (const char* ptr = std::getenv("XDG_DATA_DIR")) {
+                    const fs::path data_dir = ptr;
+                    socket = (data_dir / SLIMEVR_DATA_DIR / SOCKET_NAME);
+                } else if (const char* ptr = std::getenv("HOME")) {
+                    const fs::path home = ptr;
+                    socket = (home / XDG_DATA_DIR_DEFAULT / SLIMEVR_DATA_DIR / SOCKET_NAME);
+                }
+            }
+            if(fs::exists(socket)) {
+                driver.Log("bridge socket: " + std::string(socket));
+                client.Open(socket.native());
             }
         }
         client.UpdateOnce();