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use std::env::var;
use std::io::{self, Read, Write};
use std::net::Shutdown;
use std::os::unix::net::UnixStream;
use std::sync::atomic::Ordering;
use std::sync::mpsc::Sender;
use crate::ipc::discord::client::{Connection, RichClient};
use crate::ipc::discord::error::DiscordError;
use crate::ipc::discord::opcodes::Opcode;
use crate::ipc::discord::utils;
use crate::messages::events::local::ErrorEvent;
use crate::messages::message::Message;
use crate::{local_event, server_event};
impl Connection for RichClient {
/// Pipe path can be in any of the following directories:
/// * `XDG_RUNTIME_DIR`
/// * `TMPDIR`
/// * `TMP`
/// * `TEMP`
/// * `/tmp`
///
/// Followed by:
/// * `/app/com.discordapp.Discord` - for flatpak
/// * `/snap.discord` - for snap
///
/// Followed by:
/// * `/discord-ipc-{i}` - where `i` is a number from 0 to 9
fn connect(&mut self) -> crate::Result<()> {
let dirs = ["XDG_RUNTIME_DIR", "TMPDIR", "TMP", "TEMP"]
.iter()
.filter_map(|&dir| var(dir).ok())
.chain(["/tmp".to_string()])
.flat_map(|base| {
[
base.to_string(),
format!("{}/app/com.discordapp.Discord", base),
format!("{}/snap.discord", base),
]
});
for dir in dirs {
for i in 0..10 {
match UnixStream::connect(format!("{dir}/discord-ipc-{i}")) {
Ok(pipe) => {
let read_pipe =
pipe.try_clone().map_err(DiscordError::Io)?;
self.read_pipe = Some(read_pipe);
self.write_pipe = Some(pipe);
return Ok(());
}
Err(e) => match e.kind() {
io::ErrorKind::NotFound => continue,
_ => return Err(DiscordError::Io(e).into()),
},
}
}
}
Err(DiscordError::PipeNotFound.into())
}
fn close(&mut self) {
if let Some(pipe) = self.read_pipe.take() {
let _ = pipe.shutdown(Shutdown::Both);
}
if let Some(pipe) = self.write_pipe.take() {
let _ = pipe.shutdown(Shutdown::Both);
}
let _ = self.thread_handle.take();
}
fn start_read_thread(&mut self, tx: Sender<Message>) -> crate::Result<()> {
if let Some(mut read_pipe) = self.read_pipe.take() {
let client_id = self.client_id;
let is_ready = self.is_ready.clone();
let handle = std::thread::spawn(move || {
let mut buf = [0u8; 8192];
loop {
match read_pipe.read(&mut buf) {
Ok(0) => {
tx.send(local_event!(
0,
Error,
ErrorEvent::new(Box::new(
DiscordError::ConnectionClosed
))
))
.ok();
break;
}
Ok(bytes_transferred) => {
if bytes_transferred >= 8 {
if let Some((opcode, size)) =
utils::decode(&buf[..bytes_transferred])
{
if size > 0
&& bytes_transferred
>= 8 + size as usize
{
let data = &buf[8..8 + size as usize];
let data_str =
String::from_utf8_lossy(data);
match Opcode::from(opcode) {
Opcode::Frame => {
if data_str.contains(
"Invalid Client ID",
) {
tx.send(local_event!(
0,
Error,
ErrorEvent::new(Box::new(
DiscordError::InvalidClientId(
client_id.to_string()
)
))
))
.ok();
break;
}
if !is_ready.swap(
true,
Ordering::SeqCst,
) {
tx.send(server_event!(
0, Ready
))
.ok();
}
}
Opcode::Close => {
tx.send(local_event!(
0,
Error,
ErrorEvent::new(Box::new(
DiscordError::ConnectionClosed
))
))
.ok();
break;
}
_ => {}
}
}
}
}
}
Err(_) => {
tx.send(local_event!(
0,
Error,
ErrorEvent::new(Box::new(
DiscordError::ConnectionClosed
))
))
.ok();
break;
}
}
}
});
self.thread_handle = Some(handle);
Ok(())
} else {
Err(DiscordError::PipeNotFound.into())
}
}
fn write(&self, opcode: u32, data: Option<&[u8]>) -> crate::Result<()> {
self.write_pipe.as_ref().map_or(Ok(()), |mut pipe| {
let payload = match data {
Some(packet) => {
let mut payload =
utils::encode(opcode, packet.len() as u32);
payload.extend_from_slice(packet);
payload
}
None => utils::encode(opcode, 0),
};
match pipe.write_all(&payload) {
Ok(_) => Ok(()),
Err(_) => Err(DiscordError::ConnectionClosed.into()),
}
})
}
}