Add trivial Mutter ServiceChannel impl

Makes xdp-gnome work.

2 files changed, 39 insertions, 0 deletions

diff --git a/src/dbus/mod.rs b/src/dbus/mod.rs
new file mode 100644
index 00000000..01b4c391
--- /dev/null
+++ b/src/dbus/mod.rs
@@ -0,0 +1 @@
+pub mod mutter_service_channel;
diff --git a/src/dbus/mutter_service_channel.rs b/src/dbus/mutter_service_channel.rs
new file mode 100644
index 00000000..29af6529
--- /dev/null
+++ b/src/dbus/mutter_service_channel.rs
@@ -0,0 +1,38 @@
+use std::os::fd::{FromRawFd, IntoRawFd};
+use std::os::unix::net::UnixStream;
+use std::sync::Arc;
+
+use smithay::reexports::wayland_server::DisplayHandle;
+use zbus::dbus_interface;
+
+use crate::niri::ClientState;
+
+pub struct ServiceChannel {
+    display: DisplayHandle,
+}
+
+#[dbus_interface(name = "org.gnome.Mutter.ServiceChannel")]
+impl ServiceChannel {
+    async fn open_wayland_service_connection(
+        &mut self,
+        service_client_type: u32,
+    ) -> zbus::fdo::Result<zbus::zvariant::OwnedFd> {
+        if service_client_type != 1 {
+            return Err(zbus::fdo::Error::InvalidArgs(
+                "Invalid service client type".to_owned(),
+            ));
+        }
+
+        let (sock1, sock2) = UnixStream::pair().unwrap();
+        self.display
+            .insert_client(sock2, Arc::new(ClientState::default()))
+            .unwrap();
+        Ok(unsafe { zbus::zvariant::OwnedFd::from_raw_fd(sock1.into_raw_fd()) })
+    }
+}
+
+impl ServiceChannel {
+    pub fn new(display: DisplayHandle) -> Self {
+        Self { display }
+    }
+}