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use nix::unistd;
use openssl::ssl::{SslAcceptor, SslFiletype, SslMethod};
use std::net::{SocketAddr, TcpListener};
use std::path::PathBuf;
use std::sync::Arc;
use std::thread;
use std::vec::Vec;
use url::Url;
pub mod handler;
pub mod response;
#[derive(Clone)]
pub struct ServerConfig {
default_host: Url,
gem_root: PathBuf,
addrs: Vec<SocketAddr>,
user: unistd::Uid,
group: unistd::Gid,
cert_key: String,
cert_chain: String,
}
impl ServerConfig {
pub fn new() -> ServerConfig {
ServerConfig {
default_host: Url::parse("gemini://localhost/").unwrap(),
gem_root: PathBuf::from(""),
addrs: Vec::new(),
user: unistd::getuid(),
group: unistd::getgid(),
cert_key: "".to_string(),
cert_chain: "".to_string(),
}
}
pub fn set_default_host(&mut self, default_host: String) {
let mut url = Url::parse("gemini://default/").unwrap();
match url.set_host(Some(default_host.as_str())) {
Ok(_) => {}
Err(e) => panic!(e),
};
self.default_host = url;
}
pub fn set_gem_root(&mut self, gem_root: String) {
self.gem_root = PathBuf::from(gem_root);
}
pub fn add_addr(&mut self, addr: String) {
self.addrs.push(match addr.parse() {
Ok(addr) => addr,
Err(e) => panic!(e),
});
}
pub fn set_user(&mut self, uname: String) {
self.user = match unistd::User::from_name(&uname) {
Ok(user) => match user {
Some(user) => user.uid,
None => panic!("unknown user {}", uname),
},
Err(e) => panic!(e),
};
}
pub fn set_group(&mut self, gname: String) {
self.group = match unistd::Group::from_name(&gname) {
Ok(group) => match group {
Some(group) => group.gid,
None => panic!("unknown group {}", gname),
},
Err(e) => panic!(e),
};
}
pub fn set_cert_key(&mut self, fname: String) {
self.cert_key = fname;
}
pub fn set_cert_chain(&mut self, fname: String) {
self.cert_chain = fname;
}
}
pub struct Server {
config: ServerConfig,
}
impl Server {
pub fn new(config: &ServerConfig) -> Server {
Server {
config: config.clone(),
}
}
fn build_acceptor(config: &ServerConfig) -> std::sync::Arc<SslAcceptor> {
let mut acceptor = SslAcceptor::mozilla_intermediate_v5(SslMethod::tls()).unwrap();
println!("reading certificate private key: {}", config.cert_key);
// TODO: allow more than PEM
acceptor
.set_private_key_file(config.cert_key.as_str(), SslFiletype::PEM)
.unwrap();
println!("reading certificate chain file: {}", config.cert_chain);
acceptor
.set_certificate_chain_file(config.cert_chain.as_str())
.unwrap();
acceptor.check_private_key().unwrap();
return Arc::new(acceptor.build());
}
pub fn serve(&self) {
println!("serving...");
let acceptor = Server::build_acceptor(&self.config);
let mut listeners = Vec::new();
for addr in &self.config.addrs {
let listener = match TcpListener::bind(addr) {
Ok(listener) => listener,
Err(_) => {
println!("failed listening on: {}", addr);
return;
}
};
listeners.push(listener);
println!("listening on: {}", addr);
}
if self.config.user.is_root() {
panic!("refusing to run as root");
}
println!("set gid to: {}", self.config.group);
match unistd::setgid(self.config.group) {
Ok(_) => {}
Err(e) => {
panic!(e);
}
};
println!("set uid to: {}", self.config.user);
match unistd::setuid(self.config.user) {
Ok(_) => {}
Err(e) => {
panic!(e);
}
};
let mut threads = Vec::new();
for listener in listeners {
let config = self.config.clone();
let acceptor = acceptor.clone();
let t = thread::spawn(move || listener_loop(config, listener, acceptor));
threads.push(t);
}
for t in threads {
match t.join() {
Ok(_) => {
println!("failure! one listening thread exited");
},
Err(_) => {
println!("failure! one listening thread exited");
},
};
}
}
}
fn listener_loop(config: ServerConfig, listener: TcpListener, acceptor: std::sync::Arc<SslAcceptor>) {
for stream in listener.incoming() {
println!("new connection");
match stream {
Ok(stream) => {
let acceptor = acceptor.clone();
let config = config.clone();
thread::spawn(move || {
let stream = acceptor.accept(stream).unwrap();
handler::handle_request(&config, stream);
println!("closing connection");
});
}
Err(_) => {
println!("connection failed");
}
}
}
}
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