69 lines
1.7 KiB
Rust
69 lines
1.7 KiB
Rust
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use std::collections::BTreeSet;
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use anyhow::Context as _;
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use common::proc::Command;
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use serde::Deserialize;
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#[derive(Debug, Deserialize)]
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struct Link {
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ifname: String,
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}
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#[derive(Debug, Deserialize)]
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struct Addr {
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addr_info: Vec<AddrInfo>,
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}
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#[derive(Debug, Deserialize)]
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struct AddrInfo {
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local: String,
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prefixlen: usize,
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}
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#[derive(Debug, Deserialize)]
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struct Route {
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dst: String,
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gateway: Option<String>,
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}
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pub fn get_link_names() -> anyhow::Result<BTreeSet<String>> {
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let mut proc = Command::new("ip");
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proc.args(["-j", "link"]);
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let out = proc.try_spawn_to_json::<Vec<Link>>()?;
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Ok(out.into_iter().map(|l| l.ifname).collect())
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}
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pub fn has_ipv6_address(dev: &str, addr: &str) -> anyhow::Result<bool> {
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let mut proc = Command::new("ip");
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proc.args(["-j", "-6", "addr", "show", dev]);
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let out: Vec<Addr> = proc.try_spawn_to_json()?;
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let idx = addr
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.char_indices()
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.find_map(|(idx, ch)| if ch == '/' { Some(idx) } else { None })
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.expect("Address should contain prefixlen");
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let prefixlen = &addr[idx + 1..];
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let addr = &addr[..idx];
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let prefixlen: usize = prefixlen
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.parse()
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.context("Ipv6 prefixlen was not a usize")?;
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Ok(out.iter().any(|a| {
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a.addr_info
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.iter()
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.any(|a| a.local == addr && a.prefixlen == prefixlen)
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}))
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}
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pub fn has_default_route(dev: &str, gateway: &str) -> anyhow::Result<bool> {
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let mut proc = Command::new("ip");
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proc.args(["-j", "-6", "route", "show", "dev", dev]);
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let out: Vec<Route> = proc.try_spawn_to_json()?;
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Ok(out
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.iter()
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.any(|r| r.dst == "default" && r.gateway.as_deref().is_some_and(|gw| gw == gateway)))
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}
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