170 lines
4.8 KiB
Rust
170 lines
4.8 KiB
Rust
use super::{Context, Module};
|
|
|
|
use crate::config::ModuleConfig;
|
|
use crate::configs::localip::LocalipConfig;
|
|
use crate::formatter::StringFormatter;
|
|
|
|
use std::io::Error;
|
|
use std::net::UdpSocket;
|
|
|
|
fn get_local_ipv4() -> Result<String, Error> {
|
|
let socket = UdpSocket::bind("0.0.0.0:0")?;
|
|
socket.connect("192.0.2.0:80")?;
|
|
|
|
let addr = socket.local_addr()?;
|
|
|
|
Ok(addr.ip().to_string())
|
|
}
|
|
|
|
/// Creates a module with the ipv4 address of the local machine.
|
|
///
|
|
/// The IP address is gathered from the local endpoint of an UDP socket
|
|
/// connected to a reserved IPv4 remote address, which is an accurate and fast
|
|
/// way, especially if there are multiple IP addresses available.
|
|
/// There should be no actual packets send over the wire.
|
|
///
|
|
/// Will display the ip if all of the following criteria are met:
|
|
/// - `localip.disabled` is false
|
|
/// - `localip.ssh_only` is false OR the user is currently connected as an SSH session (`$SSH_CONNECTION`)
|
|
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
|
|
let mut module = context.new_module("localip");
|
|
let config: LocalipConfig = LocalipConfig::try_load(module.config);
|
|
|
|
// As we default to disabled=true, we have to check here after loading our config module,
|
|
// before it was only checking against whatever is in the config starship.toml
|
|
if config.disabled {
|
|
return None;
|
|
};
|
|
|
|
let ssh_connection = context.get_env("SSH_CONNECTION");
|
|
if config.ssh_only && ssh_connection.is_none() {
|
|
return None;
|
|
}
|
|
|
|
let localip = match get_local_ipv4() {
|
|
Ok(ip) => ip,
|
|
Err(e) => {
|
|
// ErrorKind::NetworkUnreachable is unstable
|
|
if cfg!(target_os = "linux") && e.raw_os_error() == Some(101) {
|
|
"NetworkUnreachable".to_string()
|
|
} else {
|
|
log::warn!("unable to determine local ipv4 address: {e}");
|
|
return None;
|
|
}
|
|
}
|
|
};
|
|
|
|
let parsed = StringFormatter::new(config.format).and_then(|formatter| {
|
|
formatter
|
|
.map_style(|variable| match variable {
|
|
"style" => Some(Ok(config.style)),
|
|
_ => None,
|
|
})
|
|
.map(|variable| match variable {
|
|
"localipv4" => Some(Ok(&localip)),
|
|
_ => None,
|
|
})
|
|
.parse(None, Some(context))
|
|
});
|
|
|
|
module.set_segments(match parsed {
|
|
Ok(segments) => segments,
|
|
Err(error) => {
|
|
log::warn!("Error in module `localip`:\n{}", error);
|
|
return None;
|
|
}
|
|
});
|
|
|
|
Some(module)
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use crate::modules::localip::get_local_ipv4;
|
|
use crate::test::ModuleRenderer;
|
|
use nu_ansi_term::{Color, Style};
|
|
|
|
macro_rules! get_localip {
|
|
() => {
|
|
match get_local_ipv4() {
|
|
Ok(ip) => ip,
|
|
Err(e) => {
|
|
println!(
|
|
"localip was not tested because socket connection failed! \
|
|
This could be caused by an unconventional network setup. \
|
|
Error: {e}"
|
|
);
|
|
return;
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
#[test]
|
|
fn is_ipv4_format() {
|
|
let localip = get_localip!();
|
|
assert!(regex::Regex::new(r"^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$")
|
|
.unwrap()
|
|
.is_match(&localip));
|
|
}
|
|
|
|
#[test]
|
|
fn ssh_only_false() {
|
|
let localip = get_localip!();
|
|
let actual = ModuleRenderer::new("localip")
|
|
.config(toml::toml! {
|
|
[localip]
|
|
ssh_only = false
|
|
disabled = false
|
|
})
|
|
.collect();
|
|
let expected = Some(format!("{} ", style().paint(localip)));
|
|
|
|
assert_eq!(expected, actual);
|
|
}
|
|
|
|
#[test]
|
|
fn no_ssh() {
|
|
let actual = ModuleRenderer::new("localip")
|
|
.config(toml::toml! {
|
|
[localip]
|
|
ssh_only = true
|
|
disabled = false
|
|
})
|
|
.collect();
|
|
let expected = None;
|
|
|
|
assert_eq!(expected, actual);
|
|
}
|
|
|
|
#[test]
|
|
fn ssh() {
|
|
let localip = get_localip!();
|
|
let actual = ModuleRenderer::new("localip")
|
|
.config(toml::toml! {
|
|
[localip]
|
|
ssh_only = true
|
|
disabled = false
|
|
})
|
|
.env("SSH_CONNECTION", "something")
|
|
.collect();
|
|
let expected = Some(format!("{} ", style().paint(localip)));
|
|
|
|
assert_eq!(expected, actual);
|
|
}
|
|
|
|
#[test]
|
|
fn config_blank() {
|
|
let actual = ModuleRenderer::new("localip")
|
|
.env("SSH_CONNECTION", "something")
|
|
.collect();
|
|
|
|
let expected = None;
|
|
assert_eq!(expected, actual);
|
|
}
|
|
|
|
fn style() -> Style {
|
|
Color::Yellow.bold()
|
|
}
|
|
}
|