106 lines
2.7 KiB
Rust
106 lines
2.7 KiB
Rust
use std::{
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collections::HashMap,
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ffi::CStr,
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path::Path,
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sync::{Arc, RwLock},
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};
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use hbb_common::anyhow::{anyhow, Error};
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use lazy_static::lazy_static;
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use libloading::Library;
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lazy_static! {
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pub static ref PLUGIN_REGISTRAR: Arc<PluginRegistar<PluginImpl>> =
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Arc::new(PluginRegistar::<PluginImpl>::default());
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}
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// API needed to be implemented by plugins.
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pub type PluginInitFunc = fn() -> i32;
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// API needed to be implemented by plugins.
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pub type PluginDisposeFunc = fn() -> i32;
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pub trait Plugin {
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// Return: the unique ID which identifies this plugin.
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fn plugin_id(&self) -> String;
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// Return: the name which is human-readable.
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fn plugin_name(&self) -> String;
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// Return: the virtual table of the plugin.
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fn plugin_vt(&self) -> &RustDeskPluginTable;
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}
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#[repr(C)]
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#[derive(Default, Clone)]
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pub struct RustDeskPluginTable {
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pub init: Option<PluginInitFunc>,
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pub dispose: Option<PluginDisposeFunc>,
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}
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#[derive(Default, Clone)]
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pub struct PluginImpl {
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vt: RustDeskPluginTable,
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id: String,
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name: String,
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}
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impl Plugin for PluginImpl {
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fn plugin_id(&self) -> String {
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self.id.to_owned()
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}
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fn plugin_name(&self) -> String {
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self.name.to_owned()
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}
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fn plugin_vt(&self) -> &RustDeskPluginTable {
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&self.vt
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}
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}
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#[derive(Default, Clone)]
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pub struct PluginRegistar<P: Plugin> {
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plugins: Arc<RwLock<HashMap<String, P>>>,
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}
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impl<P: Plugin> PluginRegistar<P> {
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pub fn load_plugin(&self, path: *const i8) -> i32 {
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let p = unsafe { CStr::from_ptr(path) };
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let lib_path = p.to_str().unwrap_or("").to_owned();
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let lib = unsafe { libloading::Library::new(lib_path.as_str()) };
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match lib {
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Ok(lib) => match lib.try_into() {
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Ok(plugin) => {
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PLUGIN_REGISTRAR
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.plugins
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.write()
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.unwrap()
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.insert(lib_path, plugin);
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return 0;
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}
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Err(err) => {
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eprintln!("Load plugin failed: {}", err);
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}
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},
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Err(err) => {
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eprintln!("Load plugin failed: {}", err);
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}
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}
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-1
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}
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pub fn unload_plugin(&self, path: *const i8) -> i32 {
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let p = unsafe { CStr::from_ptr(path) };
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let lib_path = p.to_str().unwrap_or("").to_owned();
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match PLUGIN_REGISTRAR.plugins.write().unwrap().remove(&lib_path) {
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Some(_) => 0,
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None => -1,
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}
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}
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}
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impl TryFrom<Library> for PluginImpl {
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type Error = Error;
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fn try_from(library: Library) -> Result<Self, Self::Error> {
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todo!()
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}
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}
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