[WIP] A simple wake-on-lan service
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+4
Cargo.toml
+4
Cargo.toml
+34
src/config.rs
+34
src/config.rs
···
1
+
use serde::Deserialize;
2
+
use std::{collections::HashMap, fs::File, io::Read, path::PathBuf};
3
+
use thiserror::Error;
4
+
5
+
#[derive(Deserialize, Debug)]
6
+
pub struct Config {
7
+
#[serde(default = "default_binding")]
8
+
pub binding: String,
9
+
#[serde(deserialize_with = "crate::mac::deserialize_mac_hashmap")]
10
+
pub targets: HashMap<String, crate::mac::MacAddress>,
11
+
}
12
+
13
+
fn default_binding() -> String {
14
+
"0.0.0.0:3000".to_string()
15
+
}
16
+
17
+
impl Config {
18
+
pub fn load(path: PathBuf) -> Result<Self, ConfigError> {
19
+
let mut file = File::open(path)?;
20
+
let mut contents = String::new();
21
+
file.read_to_string(&mut contents)?;
22
+
23
+
let config: Self = toml::from_str(&contents)?;
24
+
return Ok(config);
25
+
}
26
+
}
27
+
28
+
#[derive(Error, Debug)]
29
+
pub enum ConfigError {
30
+
#[error("Io error: {}", .0)]
31
+
Io(#[from] std::io::Error),
32
+
#[error("Deserialize error: {}", .0)]
33
+
Serde(#[from] toml::de::Error),
34
+
}
+56
src/mac.rs
+56
src/mac.rs
···
1
+
use std::{collections::HashMap, fmt::Display, num::ParseIntError, str::FromStr};
2
+
3
+
use serde::{Deserialize, Deserializer, de::Error};
4
+
use thiserror::Error;
5
+
6
+
#[derive(Clone, Debug)]
7
+
pub struct MacAddress([u8; 6]);
8
+
9
+
impl Display for MacAddress {
10
+
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
11
+
write!(
12
+
f,
13
+
"{:X}:{:X}:{:X}:{:X}:{:X}:{:X}",
14
+
self.0[0], self.0[1], self.0[2], self.0[3], self.0[4], self.0[5]
15
+
)
16
+
}
17
+
}
18
+
19
+
#[derive(Error, Debug)]
20
+
pub enum MacAddressError {
21
+
#[error("Integer error: {}", .0)]
22
+
ParseInt(#[from] ParseIntError),
23
+
#[error("Mac address to short")]
24
+
TooShort,
25
+
}
26
+
27
+
impl FromStr for MacAddress {
28
+
type Err = MacAddressError;
29
+
30
+
fn from_str(s: &str) -> Result<Self, Self::Err> {
31
+
let mut parts = s.split(":");
32
+
let mut address: [u8; 6] = [0, 0, 0, 0, 0, 0];
33
+
for i in 0..address.len() {
34
+
address[i] = u8::from_str_radix(parts.next().ok_or(MacAddressError::TooShort)?, 16)?;
35
+
}
36
+
Ok(MacAddress(address))
37
+
}
38
+
}
39
+
40
+
pub fn deserialize_mac_hashmap<'de, D>(de: D) -> Result<HashMap<String, MacAddress>, D::Error>
41
+
where
42
+
D: Deserializer<'de>,
43
+
{
44
+
HashMap::<String, String>::deserialize(de)?
45
+
.into_iter()
46
+
.map::<Result<_, MacAddressError>, _>(|(k, v)| Ok((k, MacAddress::from_str(&v)?)))
47
+
.collect::<Result<_, _>>()
48
+
.map_err(Error::custom)
49
+
}
50
+
51
+
pub fn deserialize_mac<'de, D>(de: D) -> Result<MacAddress, D::Error>
52
+
where
53
+
D: Deserializer<'de>,
54
+
{
55
+
MacAddress::from_str(&String::deserialize(de)?).map_err(Error::custom)
56
+
}
+25
-2
src/main.rs
+25
-2
src/main.rs
···
1
-
fn main() {
2
-
println!("Hello, world!");
1
+
use std::path::PathBuf;
2
+
3
+
mod config;
4
+
5
+
#[derive(thiserror::Error, Debug)]
6
+
enum Error {
7
+
#[error("Config error: {}", .0)]
8
+
Config(#[from] config::ConfigError),
9
+
}
10
+
11
+
#[tokio::main]
12
+
async fn main() -> () {
13
+
async fn main() -> Result<(), Error> {
14
+
let config = config::Config::load(PathBuf::from("./wol.toml"))?;
15
+
println!("Binding to {}", config.binding);
16
+
for (k, v) in config.targets {
17
+
println!("target: {k}: {v}");
18
+
}
19
+
Ok(())
20
+
}
21
+
22
+
let res = main().await;
23
+
if let Err(err) = res {
24
+
eprintln!("{}", err);
25
+
}
3
26
}