proxmox-backup/src/bin/proxmox-backup-banner.rs
Thomas Lamprecht b69b8af26b s/pbsbanner/proxmox-backup-banner/ + move to /usr/lib
We want to avoid pbs if possible and also avoid placing internal
binaries, not intended for human direct use, in /bin or /sbin paths.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
2020-02-10 14:43:28 +01:00

50 lines
1.3 KiB
Rust

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:
",
""
);
let msg = match addr.to_socket_addrs() {
Ok(saddrs) => {
let saddrs: Vec<_> = saddrs
.filter_map(|s| match !s.ip().is_loopback() {
true => Some(format!(" https://{}/", s)),
false => None,
})
.collect();
if !saddrs.is_empty() {
saddrs.join("\n")
} else {
format!(
"hostname '{}' does not resolves to any non-loopback address",
nodename
)
}
}
Err(e) => format!("could not resolve hostname '{}': {}", nodename, e),
};
banner += &msg;
// 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\n{:-<78}\n\n", "").unwrap();
fs::write("/etc/issue", banner.as_bytes()).expect("Unable to write banner to issue file");
}