146 lines
4.2 KiB
Rust
146 lines
4.2 KiB
Rust
/*
|
|
* This file is part of espanso.
|
|
*
|
|
* Copyright (C) 2019-2021 Federico Terzi
|
|
*
|
|
* espanso is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* espanso is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with espanso. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
use crate::{EventHandlerResponse, IPCClientError, util::read_line};
|
|
use anyhow::Result;
|
|
use log::{error, info};
|
|
use serde::{de::DeserializeOwned, Serialize};
|
|
use std::{
|
|
io::{Write},
|
|
os::unix::net::{UnixListener, UnixStream},
|
|
path::{Path},
|
|
};
|
|
|
|
use crate::{EventHandler, IPCClient, IPCServer};
|
|
|
|
pub struct UnixIPCServer {
|
|
listener: UnixListener,
|
|
}
|
|
|
|
impl UnixIPCServer {
|
|
pub fn new(id: &str, parent_dir: &Path) -> Result<Self> {
|
|
let socket_path = parent_dir.join(format!("{}.sock", id));
|
|
|
|
// Remove previous Unix socket
|
|
if socket_path.exists() {
|
|
std::fs::remove_file(&socket_path)?;
|
|
}
|
|
|
|
let listener = UnixListener::bind(&socket_path)?;
|
|
|
|
info!(
|
|
"binded to IPC unix socket: {}",
|
|
socket_path.to_string_lossy()
|
|
);
|
|
|
|
Ok(Self { listener })
|
|
}
|
|
}
|
|
|
|
impl<Event: Send + Sync + DeserializeOwned + Serialize> IPCServer<Event> for UnixIPCServer {
|
|
fn run(self, handler: EventHandler<Event>) -> Result<()> {
|
|
loop {
|
|
let (mut stream, _) = self.listener.accept()?;
|
|
|
|
// Read multiple commands from the client
|
|
loop {
|
|
match read_line(&mut stream) {
|
|
Ok(Some(line)) => {
|
|
let event: Result<Event, serde_json::Error> = serde_json::from_str(&line);
|
|
match event {
|
|
Ok(event) => match handler(event) {
|
|
EventHandlerResponse::Response(response) => {
|
|
let mut json_event = serde_json::to_string(&response)?;
|
|
json_event.push('\n');
|
|
stream.write_all(json_event.as_bytes())?;
|
|
stream.flush()?;
|
|
}
|
|
EventHandlerResponse::NoResponse => {
|
|
// Async event, no need to reply
|
|
}
|
|
EventHandlerResponse::Error(err) => {
|
|
error!("ipc handler reported an error: {}", err);
|
|
}
|
|
EventHandlerResponse::Exit => {
|
|
return Ok(());
|
|
}
|
|
},
|
|
Err(error) => {
|
|
error!("received malformed event from ipc stream: {}", error);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
Ok(None) => {
|
|
// EOF reached
|
|
break;
|
|
}
|
|
Err(error) => {
|
|
error!("error reading ipc stream: {}", error);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
pub struct UnixIPCClient {
|
|
stream: UnixStream,
|
|
}
|
|
|
|
impl UnixIPCClient {
|
|
pub fn new(id: &str, parent_dir: &Path) -> Result<Self> {
|
|
let socket_path = parent_dir.join(format!("{}.sock", id));
|
|
let stream = UnixStream::connect(&socket_path)?;
|
|
|
|
Ok(Self { stream })
|
|
}
|
|
}
|
|
|
|
impl<Event: Serialize + DeserializeOwned> IPCClient<Event> for UnixIPCClient {
|
|
fn send_sync(&mut self, event: Event) -> Result<Event> {
|
|
{
|
|
let mut json_event = serde_json::to_string(&event)?;
|
|
json_event.push('\n');
|
|
self.stream.write_all(json_event.as_bytes())?;
|
|
self.stream.flush()?;
|
|
}
|
|
|
|
// Read the response
|
|
if let Some(line) = read_line(&mut self.stream)? {
|
|
let event: Result<Event, serde_json::Error> = serde_json::from_str(&line);
|
|
match event {
|
|
Ok(response) => Ok(response),
|
|
Err(err) => Err(IPCClientError::MalformedResponse(err.into()).into()),
|
|
}
|
|
} else {
|
|
Err(IPCClientError::EmptyResponse.into())
|
|
}
|
|
}
|
|
|
|
fn send_async(&mut self, event: Event) -> Result<()> {
|
|
let mut json_event = serde_json::to_string(&event)?;
|
|
json_event.push('\n');
|
|
self.stream.write_all(json_event.as_bytes())?;
|
|
self.stream.flush()?;
|
|
|
|
Ok(())
|
|
}
|
|
} |