feat: add x11 clipboard support

Signed-off-by: 蔡略 <cailue@bupt.edu.cn>

libs/clipboard/src/platform/mod.rs

@@ -1,4 +1,4 @@
-use parking_lot::{Condvar, Mutex};
+use crate::{CliprdrError, CliprdrServiceContext};
 
 #[cfg(target_os = "windows")]
 pub mod windows;
@@ -19,8 +19,48 @@ pub mod linux;
 #[cfg(target_os = "linux")]
 pub fn create_cliprdr_context(
     enable_files: bool,
-    enable_others: bool,
+    _enable_others: bool,
     response_wait_timeout_secs: u32,
 ) -> crate::ResultType<Box<dyn crate::CliprdrServiceContext>> {
-    unimplemented!()
+    use std::sync::Arc;
+
+    if !enable_files {
+        return Ok(Box::new(DummyCliprdrContext {}) as Box<_>);
+    }
+
+    let timeout = std::time::Duration::from_secs(response_wait_timeout_secs as u64);
+    let mut tmp_path = std::env::temp_dir();
+    tmp_path.push("rustdesk-cliprdr");
+    let rd_mnt = tmp_path;
+    std::fs::create_dir(rd_mnt.clone())?;
+    let linux_ctx = Arc::new(linux::ClipboardContext::new(timeout, rd_mnt)?);
+
+    let fuse_ctx = linux_ctx.clone();
+    std::thread::spawn(move || fuse_ctx.mount());
+    let clipboard_listen_ctx = linux_ctx.clone();
+    std::thread::spawn(move || clipboard_listen_ctx.listen_clipboard());
+
+    Ok(Box::new(linux_ctx.client()) as Box<_>)
 }
+
+struct DummyCliprdrContext {}
+
+impl CliprdrServiceContext for DummyCliprdrContext {
+    fn set_is_stopped(&mut self) -> Result<(), CliprdrError> {
+        Ok(())
+    }
+    fn empty_clipboard(&mut self, _conn_id: i32) -> Result<bool, CliprdrError> {
+        Ok(true)
+    }
+    fn server_clip_file(
+        &mut self,
+        _conn_id: i32,
+        _msg: crate::ClipboardFile,
+    ) -> Result<(), crate::CliprdrError> {
+        Ok(())
+    }
+}
+
+// begin of epoch used by microsoft
+// 1601-01-01 00:00:00 + LDAP_EPOCH_DELTA*(100 ns) = 1970-01-01 00:00:00
+const LDAP_EPOCH_DELTA: u64 = 116444772610000000;