First DBUS server

This commit is contained in:
Florian RICHER 2025-04-19 21:51:44 +02:00
parent 8ce7c1a8a5
commit 09d58154eb
Signed by: florian.richer
GPG key ID: C73D37CBED7BFC77
7 changed files with 419 additions and 6 deletions

265
Cargo.lock generated
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@ -2,6 +2,271 @@
# It is not intended for manual editing.
version = 4
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@ -4,3 +4,12 @@ version = "0.1.0"
edition = "2024"
authors = ["Florian RICHER <florian.richer@protonmail.com>"]
publish = false
build = "build.rs"
[dependencies]
dbus = "0.9"
dbus-codegen = "0.12"
dbus-tree = "0.9"
[build-dependencies]
dbus-codegen = "0.12"

27
build.rs Normal file
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@ -0,0 +1,27 @@
use dbus_codegen::{GenOpts, generate};
use std::env;
use std::fs::File;
use std::io::Write;
use std::path::Path;
fn write_to_file(code: &str, path: &Path) {
let mut f = File::create(path).unwrap();
Write::write_all(&mut f, code.as_bytes()).unwrap();
}
fn generate_code(xml: &str, opts: &GenOpts, outfile: &str) {
let code = generate(xml, opts).unwrap();
let out_dir = env::var("OUT_DIR").unwrap();
let path = Path::new(&out_dir).join(outfile);
println!("cargo::warning={:?}", path);
write_to_file(&code, &path);
}
fn main() {
let opts = GenOpts::default();
generate_code(
include_str!("dbus/com.example.mytest.xml"),
&opts,
"com_example_mytest.rs",
);
}

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@ -0,0 +1,16 @@
<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN"
"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
<node>
<interface name="com.example.mytest">
<method name="hello">
<arg name="name" direction="in" type="s"/>
<arg name="msg" direction="out" type="s"/>
</method>
<signal name="new_name">
<arg name="name" type="s"/>
</signal>
<property name="name" type="s" access="readwrite"/>
</interface>
</node>

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@ -18,12 +18,17 @@
inherit system overlays;
};
rust = pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;
nativeBuildInputs = with pkgs; [
pkg-config
dbus
];
in
{
devShells = {
default = pkgs.mkShell {
nativeBuildInputs = [
(rust.override { extensions = [ "rust-src" "rust-analyzer" ]; })
nativeBuildInputs = nativeBuildInputs ++ [
(rust.override { extensions = [ "rust-src" "rust-analyzer" ]; })
];
};
};

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@ -1,3 +1,93 @@
fn main() {
println!("Hello world");
use std::{cell::RefCell, sync::Arc};
use dbus::{Path, ffidisp::Connection};
use dbus_tree::{self as tree, Interface, MTFn};
mod mytest;
#[derive(Debug)]
struct Device {
pub name: RefCell<String>,
pub path: Path<'static>,
}
impl Device {
pub fn new(index: u32, name: String) -> Self {
Self {
name: RefCell::new(name),
path: format!("/Device{}", index).into(),
}
}
}
impl mytest::ComExampleMytest for Device {
fn hello(&self, name: &str) -> Result<String, tree::MethodErr> {
Ok(format!("Hello, {}!", name))
}
fn name(&self) -> Result<String, tree::MethodErr> {
let name = self.name.borrow();
Ok(name.clone())
}
fn setname(&self, value: String) -> Result<(), tree::MethodErr> {
self.name.replace(value);
Ok(())
}
}
#[derive(Copy, Clone, Default, Debug)]
struct TData;
impl tree::DataType for TData {
type Tree = ();
type ObjectPath = Arc<Device>;
type Property = ();
type Interface = ();
type Method = ();
type Signal = ();
}
fn create_iface() -> Interface<MTFn<TData>, TData> {
let f = tree::Factory::new_fn();
mytest::com_example_mytest_server(&f, (), |m| {
// Just provide a link from MethodInfo (m) to the &Device
// we should call.
let a: &Arc<Device> = m.path.get_data();
let b: &Device = &a;
b
})
}
fn create_tree(
devices: &[Arc<Device>],
iface: &Arc<Interface<MTFn<TData>, TData>>,
) -> tree::Tree<MTFn<TData>, TData> {
let f = tree::Factory::new_fn();
let mut tree = f.tree(());
for dev in devices {
tree = tree.add(
f.object_path(dev.path.clone(), dev.clone())
.introspectable()
.add(iface.clone()),
);
}
tree
}
fn main() -> Result<(), Box<dyn std::error::Error>> {
let device = Arc::new(Device::new(0, format!("Device{}", 0)));
// Create tree
let iface = create_iface();
let tree = create_tree(&[device], &Arc::new(iface));
let c = Connection::new_session()?;
c.register_name("com.example.mytest", 0)?;
tree.set_registered(&c, true)?;
c.add_handler(tree);
loop {
c.incoming(1000).next();
}
}

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src/mytest/mod.rs Normal file
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@ -0,0 +1 @@
include!(concat!(env!("OUT_DIR"), "/com_example_mytest.rs"));