feat: add native session handlers

src/plugin/plugins.rs

@@ -14,7 +14,7 @@ use std::{
     collections::HashMap,
     ffi::{c_char, c_void},
     path::PathBuf,
-    sync::{Arc, RwLock},
+    sync::{Arc, RwLock}, os::raw::c_uint,
 };
 
 const METHOD_HANDLE_UI: &[u8; 10] = b"handle_ui\0";
@@ -91,6 +91,14 @@ type CallbackGetId = extern "C" fn() -> *const c_char;
 /// level: "error", "warn", "info", "debug", "trace".
 /// msg:   The message.
 type CallbackLog = extern "C" fn(level: *const c_char, msg: *const c_char);
+
+/// Callback to the librustdesk core.
+/// 
+/// method: the method name of this callback.
+/// json: the json data for the parameters. The argument *must* be non-null.
+/// raw: the binary data for this call, nullable.
+/// raw_len: the length of this binary data, only valid when we pass raw data to `raw`.
+type CallbackNative = extern "C" fn(method: *const c_char, json: *const c_char, raw: *const c_void, raw_len: usize) -> super::native::NativeReturnValue;
 /// The main function of the plugin on the client(self) side.
 ///
 /// method: The method. "handle_ui" or "handle_peer"
@@ -140,6 +148,7 @@ struct Callbacks {
     get_conf: CallbackGetConf,
     get_id: CallbackGetId,
     log: CallbackLog,
+    native: CallbackNative
 }
 
 /// The plugin initialize data.
@@ -334,6 +343,7 @@ fn load_plugin_path(path: &str) -> ResultType<()> {
             get_conf: config::cb_get_conf,
             get_id: config::cb_get_local_peer_id,
             log: super::plog::plugin_log,
+            native: super::native::cb_native_data
         },
     };
     plugin.init(&init_data, path)?;