1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
// SPDX-License-Identifier: MIT
#![cfg(feature = "tokio_socket")]
use std::env;
use ipnetwork::Ipv4Network;
use rtnetlink::{new_connection, Error, Handle};
const TEST_TABLE_ID: u32 = 299;
#[tokio::main]
async fn main() -> Result<(), ()> {
let args: Vec<String> = env::args().collect();
if args.len() != 3 {
usage();
return Ok(());
}
let dest: Ipv4Network = args[1].parse().unwrap_or_else(|_| {
eprintln!("invalid destination");
std::process::exit(1);
});
let gateway: Ipv4Network = args[2].parse().unwrap_or_else(|_| {
eprintln!("invalid gateway");
std::process::exit(1);
});
let (connection, handle, _) = new_connection().unwrap();
tokio::spawn(connection);
if let Err(e) = add_route(&dest, &gateway, handle.clone()).await {
eprintln!("{e}");
} else {
println!("Route has been added to table {TEST_TABLE_ID}");
}
Ok(())
}
async fn add_route(
dest: &Ipv4Network,
gateway: &Ipv4Network,
handle: Handle,
) -> Result<(), Error> {
let route = handle.route();
route
.add()
.v4()
.destination_prefix(dest.ip(), dest.prefix())
.gateway(gateway.ip())
.table_id(TEST_TABLE_ID)
.execute()
.await?;
Ok(())
}
fn usage() {
eprintln!(
"\
usage:
cargo run --example add_route -- <destination>/<prefix_length> <gateway>
Note that you need to run this program as root:
env CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_RUNNER='sudo -E' \\
cargo run --example add_route -- <destination>/<prefix_length> \
<gateway>"
);
}
|
