feat: add cb for ffi

src/plugin/native.rs

@@ -1,16 +1,40 @@
-use std::{ffi::{c_char, c_void}, os::raw::c_uint};
+use std::{
+    ffi::{c_char, c_int, c_void},
+    os::raw::c_uint,
+};
 
+use hbb_common::log::error;
+
+use super::{
+    cstr_to_string,
+    errno::ERR_NOT_HANDLED,
+    native_handlers::{Callable, NATIVE_HANDLERS_REGISTRAR},
+};
 /// The native returned value from librustdesk native.
-/// 
+///
 /// [Note]
 /// The data is owned by librustdesk.
 #[repr(C)]
-pub struct NativeReturnValue{
-    pub return_type: c_uint,
-    pub data: *const c_void
+pub struct NativeReturnValue {
+    pub return_type: c_int,
+    pub data: *const c_void,
 }
 
-pub(super) extern "C" fn cb_native_data(method: *const c_char, json: *const c_char, raw: *const c_void, raw_len: usize) -> NativeReturnValue {
-    // TODO: cb for native data.
-    return NativeReturnValue { return_type: 0, data: std::ptr::null() };
-}
+pub(super) extern "C" fn cb_native_data(
+    method: *const c_char,
+    json: *const c_char,
+    raw: *const c_void,
+    raw_len: usize,
+) -> NativeReturnValue {
+    let ret = match cstr_to_string(method) {
+        Ok(method) => NATIVE_HANDLERS_REGISTRAR.call(&method, json, raw, raw_len),
+        Err(err) => {
+            error!("cb_native_data error: {}", err);
+            None
+        }
+    };
+    return ret.unwrap_or(NativeReturnValue {
+        return_type: ERR_NOT_HANDLED,
+        data: std::ptr::null(),
+    });
+}