75 lines
1.8 KiB
Rust
75 lines
1.8 KiB
Rust
use std::{env, error::Error, io::{Read, Write}, os::unix::net::UnixStream};
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struct WlState {
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socket: UnixStream,
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current_id: u32,
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registry_id: u32,
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}
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fn wl_connect() -> Result<UnixStream, Box<dyn Error>> {
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let wl_sock_path: String = format!(
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"{}/{}",
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env::var("XDG_RUNTIME_DIR")?,
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env::var("WAYLAND_DISPLAY")?
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);
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let sock = UnixStream::connect(wl_sock_path)?;
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Ok(sock)
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}
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fn wl_display_get_registry(wl_state: &mut WlState) -> Result<(), Box<dyn Error>> {
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const OBJECT: u32 = 1;
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const OPCODE: u16 = 1;
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const MSG_SIZE: u16 = 12;
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let mut request = [0u8; MSG_SIZE as usize];
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request[0..4].copy_from_slice(&OBJECT.to_ne_bytes());
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request[4..6].copy_from_slice(&OPCODE.to_ne_bytes());
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request[6..8].copy_from_slice(&MSG_SIZE.to_ne_bytes());
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wl_state.current_id += 1;
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request[8..12].copy_from_slice(&wl_state.current_id.to_ne_bytes());
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wl_state.registry_id = wl_state.current_id;
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let written = wl_state.socket.write(&request)?;
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assert!(written == MSG_SIZE.into());
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Ok(())
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}
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fn wl_registry_global(size: u16, wl_sock: &mut UnixStream) {
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}
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fn main() ->Result<(), Box<dyn Error>> {
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let wl_sock = match wl_connect() {
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Ok(res) => res,
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Err(err) => {
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eprintln!("wl_connect failed: {}", err);
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return Err(err);
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}
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};
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let mut wl_state = WlState {
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socket: wl_sock,
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current_id: 0,
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registry_id: 0,
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};
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wl_display_get_registry(&mut wl_state)?;
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let mut header = [0u8; 8];
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wl_state.socket.read_exact(&mut header)?;
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println!(
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"Object: {}\nOpcode: {}\nSize: {}",
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u32::from_ne_bytes(header[0..4].try_into().unwrap()),
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u16::from_ne_bytes(header[4..6].try_into().unwrap()),
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u16::from_ne_bytes(header[6..8].try_into().unwrap())
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);
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Ok(())
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}
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