Files
sync-ssh-keys/src/main.rs
2022-08-28 15:46:54 +02:00

92 lines
3.3 KiB
Rust

mod config;
use std::{net::{TcpStream, ToSocketAddrs, SocketAddr}, path::{Path, PathBuf}, io::Write, time::Duration};
use ssh2::Session;
fn upload_file(host: &str, port: u16, username: &str, private_key: &Path, passphrase: Option<&str>, content: &str) -> Result<(), Box<dyn std::error::Error>> {
let addr: SocketAddr = format!("{}:{}", host, port).to_socket_addrs().unwrap().nth(0).expect(format!("Invalid host/port in `{}:{}`", host, port).as_str());
let tcp: TcpStream = TcpStream::connect_timeout(&addr, Duration::from_secs(3))?;
let mut sess: Session = Session::new()?;
sess.set_tcp_stream(tcp);
sess.handshake()?;
let public_key: PathBuf = private_key.with_extension("pub");
sess.userauth_pubkey_file(&username, Some(&public_key), &private_key, passphrase)?;
let mut remote_file = sess.scp_send(Path::new(".ssh").join("authorized_keys2").as_path(), 0o644, content.len() as u64, None)?;
remote_file.write(content.as_bytes())?;
remote_file.send_eof()?;
remote_file.wait_eof()?;
remote_file.close()?;
remote_file.wait_close()?;
Ok(())
}
fn generate_authorized_keys(host_keys: Vec<String>) -> String {
format!("###\n# Warning this file has been generated and will be overwritten!\n###\n\n{}\n", host_keys.join("\n"))
}
fn main() {
let ssh_dir: PathBuf = dirs::home_dir().unwrap().join(".ssh");
let private_key: PathBuf = ssh_dir.join("id_ed25519");
let passphrase: Option<&str> = None;
let config = config::read();
for host in &config.hosts {
for (user_name, user_data) in &host.users {
let mut host_keys: Vec<String> = [].to_vec();
if user_data.contains_key("groups") {
for group in user_data["groups"].as_slice() {
if !config.groups.contains_key(group) {
println!("WARNING: Key-group \"{}\" not fount!", group);
continue;
}
for key_name in config.groups[group].as_slice() {
if config.keys.contains_key(key_name) {
host_keys.push(config.keys.get(key_name).unwrap().to_string())
}
}
}
}
if user_data.contains_key("keys") {
for key_name in user_data["keys"].as_slice() {
if !config.keys.contains_key(key_name) {
println!("WARNING: Key \"{}\" not found!", key_name);
continue;
}
host_keys.push(config.keys.get(key_name).unwrap().to_string())
}
}
// Remove duplicates
host_keys.sort_unstable();
host_keys.dedup();
if host_keys.is_empty() {
continue;
}
let mut port: u16 = 22;
if host.port.is_some() {
port = host.port.unwrap();
}
let content = &generate_authorized_keys(host_keys);
// TODO: Make async! TOKIO!!!
match upload_file(&host.host, port, user_name, &private_key.as_path(), passphrase, content) {
Ok(_) => println!("{}@{}", user_name, host.host),
Err(_) => println!("{}@{}", user_name, host.host)
}
}
}
}