plugin_framework, add event listening

Signed-off-by: fufesou <shuanglongchen@yeah.net>

src/client/io_loop.rs

@@ -961,6 +961,14 @@ impl<T: InvokeUiSession> Remote<T> {
                                     }
                                 });
                             }
+
+                            // on connection established client
+                            #[cfg(all(feature = "flutter", feature = "plugin_framework"))]
+                            #[cfg(not(any(target_os = "android", target_os = "ios")))]
+                            crate::plugin::handle_listen_event(
+                                crate::plugin::EVENT_ON_CONN_CLIENT,
+                                &self.handler.id,
+                            );
                         }
 
                         if self.handler.is_file_transfer() {

src/plugin/desc.rs

@@ -60,6 +60,7 @@ pub struct Desc {
     github: String,
     location: Location,
     config: Config,
+    listen_events: Vec<String>,
 }
 
 impl Desc {
@@ -115,4 +116,8 @@ impl Desc {
     pub fn config(&self) -> &Config {
         &self.config
     }
+
+    pub fn listen_events(&self) -> &Vec<String> {
+        &self.listen_events
+    }
 }

src/plugin/mod.rs

@@ -5,13 +5,13 @@ mod callback_msg;
 mod config;
 pub mod desc;
 mod errno;
-mod plog;
 pub mod ipc;
+mod plog;
 mod plugins;
 
 pub use plugins::{
-    handle_client_event, handle_server_event, handle_ui_event, load_plugin, load_plugins,
+    handle_client_event, handle_listen_event, handle_server_event, handle_ui_event, load_plugin,
-    reload_plugin, sync_ui, unload_plugin, unload_plugins,
+    load_plugins, reload_plugin, sync_ui, unload_plugin, unload_plugins,
 };
 
 const MSG_TO_UI_TYPE_PLUGIN_DESC: &str = "plugin_desc";
@@ -19,6 +19,11 @@ const MSG_TO_UI_TYPE_PLUGIN_EVENT: &str = "plugin_event";
 const MSG_TO_UI_TYPE_PLUGIN_RELOAD: &str = "plugin_reload";
 const MSG_TO_UI_TYPE_PLUGIN_OPTION: &str = "plugin_option";
 
+pub const EVENT_ON_CONN_CLIENT: &str = "on_conn_client";
+pub const EVENT_ON_CONN_SERVER: &str = "on_conn_server";
+pub const EVENT_ON_CONN_CLOSE_CLIENT: &str = "on_conn_close_client";
+pub const EVENT_ON_CONN_CLOSE_SERVER: &str = "on_conn_close_server";
+
 pub use config::{ManagerConfig, PeerConfig, SharedConfig};
 
 #[inline]
@@ -29,7 +34,7 @@ fn cstr_to_string(cstr: *const c_char) -> ResultType<String> {
 }
 
 #[inline]
-pub fn str_to_cstr_ret(s: &str) -> *const c_char {
+fn str_to_cstr_ret(s: &str) -> *const c_char {
     let mut s = s.as_bytes().to_vec();
     s.push(0);
     unsafe {

src/plugin/plugins.rs

@@ -9,6 +9,7 @@ use hbb_common::{
     message_proto::{Message, Misc, PluginFailure, PluginRequest},
     ResultType,
 };
+use serde_derive::Serialize;
 use std::{
     collections::HashMap,
     ffi::{c_char, c_void},
@@ -18,6 +19,7 @@ use std::{
 
 const METHOD_HANDLE_UI: &[u8; 10] = b"handle_ui\0";
 const METHOD_HANDLE_PEER: &[u8; 12] = b"handle_peer\0";
+pub const METHOD_HANDLE_LISTEN_EVENT: &[u8; 20] = b"handle_listen_event\0";
 
 lazy_static::lazy_static! {
     static ref PLUGIN_INFO: Arc<RwLock<HashMap<String, PluginInfo>>> = Default::default();
@@ -249,6 +251,11 @@ make_plugin!(
     server_call: PluginFuncServerCall
 );
 
+#[derive(Serialize)]
+pub struct MsgListenEvent {
+    pub event: String,
+}
+
 #[cfg(target_os = "windows")]
 const DYLIB_SUFFIX: &str = ".dll";
 #[cfg(target_os = "linux")]
@@ -415,6 +422,55 @@ pub fn handle_server_event(id: &str, peer: &str, event: &[u8]) -> ResultType<()>
     handle_event(METHOD_HANDLE_PEER, id, peer, event)
 }
 
+#[inline]
+pub fn handle_listen_event(event: &str, peer: &str) {
+    let mut plugins = Vec::new();
+    for info in PLUGIN_INFO.read().unwrap().values() {
+        if info.desc.listen_events().contains(&event.to_string()) {
+            plugins.push(info.desc.id().to_string());
+        }
+    }
+
+    if plugins.is_empty() {
+        return;
+    }
+
+    if let Ok(mut evt) = serde_json::to_string(&MsgListenEvent {
+        event: event.to_string(),
+    }) {
+        let mut evt_bytes = evt.as_bytes().to_vec();
+        evt_bytes.push(0);
+        let mut peer: String = peer.to_owned();
+        peer.push('\0');
+        for id in plugins {
+            match PLUGINS.read().unwrap().get(&id) {
+                Some(plugin) => {
+                    let ret = (plugin.client_call)(
+                        METHOD_HANDLE_LISTEN_EVENT.as_ptr() as _,
+                        peer.as_ptr() as _,
+                        evt_bytes.as_ptr() as _,
+                        evt_bytes.len(),
+                    );
+                    if !ret.is_null() {
+                        let (code, msg) = get_code_msg_from_ret(ret);
+                        free_c_ptr(ret as _);
+                        log::error!(
+                            "Failed to handle plugin listen event, id: {}, event: {}, code: {}, msg: {}",
+                            id,
+                            event,
+                            code,
+                            msg
+                        );
+                    }
+                }
+                None => {
+                    log::error!("Plugin {} not found when handle_listen_event", id);
+                }
+            }
+        }
+    }
+}
+
 #[inline]
 pub fn handle_client_event(id: &str, peer: &str, event: &[u8]) -> Message {
     let mut peer: String = peer.to_owned();

src/server/connection.rs

@@ -563,6 +563,12 @@ impl Connection {
         } else if video_privacy_conn_id == 0 {
             let _ = privacy_mode::turn_off_privacy(0);
         }
+        #[cfg(all(feature = "flutter", feature = "plugin_framework"))]
+        #[cfg(not(any(target_os = "android", target_os = "ios")))]
+        crate::plugin::handle_listen_event(
+            crate::plugin::EVENT_ON_CONN_CLOSE_SERVER,
+            &conn.lr.my_id,
+        );
         video_service::notify_video_frame_fetched(id, None);
         scrap::codec::Encoder::update(id, scrap::codec::EncodingUpdate::Remove);
         video_service::VIDEO_QOS.lock().unwrap().reset();