258 lines
8.2 KiB
Rust
258 lines
8.2 KiB
Rust
mod handler;
|
|
|
|
use {
|
|
crate::{
|
|
backend::{ConnectorId, InputDeviceId},
|
|
config::handler::ConfigProxyHandler,
|
|
ifs::wl_seat::SeatId,
|
|
state::State,
|
|
utils::{
|
|
clonecell::CloneCell, numcell::NumCell, oserror::OsError, ptr_ext::PtrExt,
|
|
unlink_on_drop::UnlinkOnDrop, xrd::xrd,
|
|
},
|
|
},
|
|
jay_config::{
|
|
_private::{
|
|
bincode_ops,
|
|
ipc::{InitMessage, ServerMessage, V1InitMessage},
|
|
ConfigEntry, VERSION,
|
|
},
|
|
drm::Connector,
|
|
input::{InputDevice, Seat},
|
|
keyboard::ModifiedKeySym,
|
|
},
|
|
libloading::Library,
|
|
std::{cell::Cell, mem, ptr, rc::Rc},
|
|
thiserror::Error,
|
|
};
|
|
#[cfg(feature = "it")]
|
|
use crate::it::test_config::TEST_CONFIG_ENTRY;
|
|
|
|
#[derive(Debug, Error)]
|
|
pub enum ConfigError {
|
|
#[error("Could not load the config library")]
|
|
CouldNotLoadLibrary(#[source] libloading::Error),
|
|
#[error("Config library does not contain the entry symbol")]
|
|
LibraryDoesNotContainEntry(#[source] libloading::Error),
|
|
#[error("Could not determine the config directory")]
|
|
ConfigDirNotSet,
|
|
#[error("Could not link the config file")]
|
|
LinkConfigFile(#[source] OsError),
|
|
#[error("XDG_RUNTIME_DIR is not set")]
|
|
XrdNotSet,
|
|
}
|
|
|
|
pub struct ConfigProxy {
|
|
handler: CloneCell<Option<Rc<ConfigProxyHandler>>>,
|
|
}
|
|
|
|
impl ConfigProxy {
|
|
fn send(&self, msg: &ServerMessage) {
|
|
if let Some(handler) = self.handler.get() {
|
|
handler.send(msg);
|
|
}
|
|
}
|
|
|
|
pub fn destroy(&self) {
|
|
if let Some(handler) = self.handler.take() {
|
|
unsafe {
|
|
handler.do_drop();
|
|
(handler.unref)(handler.client_data.get());
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn invoke_shortcut(&self, seat: SeatId, modsym: &ModifiedKeySym) {
|
|
self.send(&ServerMessage::InvokeShortcut {
|
|
seat: Seat(seat.raw() as _),
|
|
mods: modsym.mods,
|
|
sym: modsym.sym,
|
|
});
|
|
}
|
|
|
|
pub fn new_connector(&self, connector: ConnectorId) {
|
|
self.send(&ServerMessage::NewConnector {
|
|
device: Connector(connector.raw() as _),
|
|
});
|
|
}
|
|
|
|
pub fn del_connector(&self, connector: ConnectorId) {
|
|
self.send(&ServerMessage::DelConnector {
|
|
device: Connector(connector.raw() as _),
|
|
});
|
|
}
|
|
|
|
pub fn connector_connected(&self, connector: ConnectorId) {
|
|
self.send(&ServerMessage::ConnectorConnect {
|
|
device: Connector(connector.raw() as _),
|
|
});
|
|
}
|
|
|
|
pub fn connector_disconnected(&self, connector: ConnectorId) {
|
|
self.send(&ServerMessage::ConnectorDisconnect {
|
|
device: Connector(connector.raw() as _),
|
|
});
|
|
}
|
|
|
|
pub fn new_input_device(&self, dev: InputDeviceId) {
|
|
self.send(&ServerMessage::NewInputDevice {
|
|
device: InputDevice(dev.raw() as _),
|
|
});
|
|
}
|
|
|
|
pub fn del_input_device(&self, dev: InputDeviceId) {
|
|
self.send(&ServerMessage::DelInputDevice {
|
|
device: InputDevice(dev.raw() as _),
|
|
});
|
|
}
|
|
|
|
pub fn graphics_initialized(&self) {
|
|
self.send(&ServerMessage::GraphicsInitialized);
|
|
}
|
|
|
|
pub fn clear(&self) {
|
|
self.send(&ServerMessage::Clear);
|
|
}
|
|
}
|
|
|
|
impl Drop for ConfigProxy {
|
|
fn drop(&mut self) {
|
|
self.destroy();
|
|
}
|
|
}
|
|
|
|
unsafe extern "C" fn default_client_init(
|
|
srv_data: *const u8,
|
|
srv_unref: unsafe extern "C" fn(data: *const u8),
|
|
srv_handler: unsafe extern "C" fn(data: *const u8, msg: *const u8, size: usize),
|
|
msg: *const u8,
|
|
size: usize,
|
|
) -> *const u8 {
|
|
extern "C" fn configure() {
|
|
default_config::configure();
|
|
}
|
|
jay_config::_private::client::init(srv_data, srv_unref, srv_handler, msg, size, configure)
|
|
}
|
|
|
|
impl ConfigProxy {
|
|
fn new(lib: Option<Library>, entry: &ConfigEntry, state: &Rc<State>) -> Self {
|
|
let version = entry.version.min(VERSION);
|
|
let data = Rc::new(ConfigProxyHandler {
|
|
client_data: Cell::new(ptr::null()),
|
|
dropped: Cell::new(false),
|
|
_lib: lib,
|
|
_version: version,
|
|
unref: entry.unref,
|
|
handle_msg: entry.handle_msg,
|
|
state: state.clone(),
|
|
next_id: NumCell::new(1),
|
|
keymaps: Default::default(),
|
|
bufs: Default::default(),
|
|
workspace_ids: NumCell::new(1),
|
|
workspaces_by_name: Default::default(),
|
|
workspaces_by_id: Default::default(),
|
|
timer_ids: NumCell::new(1),
|
|
timers_by_name: Default::default(),
|
|
timers_by_id: Default::default(),
|
|
});
|
|
let init_msg =
|
|
bincode::encode_to_vec(&InitMessage::V1(V1InitMessage {}), bincode_ops()).unwrap();
|
|
unsafe {
|
|
let client_data = (entry.init)(
|
|
Rc::into_raw(data.clone()) as _,
|
|
unref,
|
|
handle_msg,
|
|
init_msg.as_ptr(),
|
|
init_msg.len(),
|
|
);
|
|
data.client_data.set(client_data);
|
|
}
|
|
Self {
|
|
handler: CloneCell::new(Some(data)),
|
|
}
|
|
}
|
|
|
|
pub fn configure(&self, reload: bool) {
|
|
self.send(&ServerMessage::Configure { reload });
|
|
}
|
|
|
|
pub fn default(state: &Rc<State>) -> Self {
|
|
let entry = ConfigEntry {
|
|
version: VERSION,
|
|
init: default_client_init,
|
|
unref: jay_config::_private::client::unref,
|
|
handle_msg: jay_config::_private::client::handle_msg,
|
|
};
|
|
Self::new(None, &entry, state)
|
|
}
|
|
|
|
#[cfg(feature = "it")]
|
|
pub fn for_test(state: &Rc<State>) -> Self {
|
|
Self::new(None, &TEST_CONFIG_ENTRY, state)
|
|
}
|
|
|
|
pub fn from_config_dir(state: &Rc<State>) -> Result<Self, ConfigError> {
|
|
let dir = match state.config_dir.as_deref() {
|
|
Some(d) => d,
|
|
_ => return Err(ConfigError::ConfigDirNotSet),
|
|
};
|
|
let file = format!("{}/config.so", dir);
|
|
unsafe { Self::from_file(&file, state) }
|
|
}
|
|
|
|
pub unsafe fn from_file(path: &str, state: &Rc<State>) -> Result<Self, ConfigError> {
|
|
// Here we have to do a bit of a dance to support reloading. glibc will
|
|
// never load a library twice unless it has been unloaded in between.
|
|
// glibc identifies libraries by their file path and by their inode
|
|
// number. If either of those match, glibc considers the libraries
|
|
// identical. If the inode has not changed then this is not a problem
|
|
// for us since we don't want glibc to do any unnecessary work.
|
|
// However, if the user has created a new config with a new inode, then
|
|
// glibc will still not reload the library if we try to load it from
|
|
// the canonical location ~/.config/jay/config.so since it already has
|
|
// a library with that path loaded. To work around this, create a
|
|
// temporary symlink with an incrementing number and load the library
|
|
// from there.
|
|
let xrd = match xrd() {
|
|
Some(x) => x,
|
|
_ => return Err(ConfigError::XrdNotSet),
|
|
};
|
|
let link = format!(
|
|
"{}/.jay_config.so.{}.{}",
|
|
xrd,
|
|
uapi::getpid(),
|
|
state.config_file_id.fetch_add(1)
|
|
);
|
|
let _ = uapi::unlink(link.as_str());
|
|
if let Err(e) = uapi::symlink(path, link.as_str()) {
|
|
return Err(ConfigError::LinkConfigFile(e.into()));
|
|
}
|
|
let _unlink = UnlinkOnDrop(&link);
|
|
let lib = match Library::new(&link) {
|
|
Ok(l) => l,
|
|
Err(e) => return Err(ConfigError::CouldNotLoadLibrary(e)),
|
|
};
|
|
let entry = lib.get::<&'static ConfigEntry>(b"JAY_CONFIG_ENTRY_V1\0");
|
|
let entry = match entry {
|
|
Ok(e) => *e,
|
|
Err(e) => return Err(ConfigError::LibraryDoesNotContainEntry(e)),
|
|
};
|
|
Ok(Self::new(Some(lib), entry, state))
|
|
}
|
|
}
|
|
|
|
unsafe extern "C" fn unref(data: *const u8) {
|
|
let server = data as *const ConfigProxyHandler;
|
|
drop(Rc::from_raw(server));
|
|
}
|
|
|
|
unsafe extern "C" fn handle_msg(data: *const u8, msg: *const u8, size: usize) {
|
|
let server = (data as *const ConfigProxyHandler).deref();
|
|
if server.dropped.get() {
|
|
return;
|
|
}
|
|
let rc = Rc::from_raw(server);
|
|
let msg = std::slice::from_raw_parts(msg, size);
|
|
rc.handle_request(msg);
|
|
mem::forget(rc);
|
|
}
|