proxmox-backup/src/bin/pbsbanner.rs

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Rust
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use std::fmt::Write;
use std::fs;
use std::net::ToSocketAddrs;
use proxmox::tools;
fn main() {
let nodename = tools::nodename();
let addr = format!("{}:8007", nodename);
let mut banner = format!("
{:-<78}
Welcome to the Proxmox Backup Server. Please use your web browser to
configure this server - connect to:
",
""
);
if let Ok(saddrs) = addr.to_socket_addrs() {
let saddrs: Vec<_> = saddrs
.filter_map(|s| match !s.ip().is_loopback() {
true => Some(format!(" https://{}/", s)),
false => None,
})
.collect();
if !saddrs.is_empty() {
writeln!(&mut banner, "{}", saddrs.join("\n")).unwrap();
} else {
writeln!(
&mut banner,
"hostname '{}' does not resolves to any non-loopback address",
nodename
)
.unwrap();
}
} else {
writeln!(&mut banner, "could not resolve hostname '{}'", nodename).unwrap();
}
// unwrap will never fail for write!:
// https://github.com/rust-lang/rust/blob/1.39.0/src/liballoc/string.rs#L2318-L2331
write!(&mut banner, "\n{:-<78}\n\n", "").unwrap();
fs::write("/etc/issue", banner.as_bytes()).expect("Unable to write banner to issue file");
}