architecture changes

README.md

@@ -8,3 +8,6 @@ Why "Sheldon Director"?
 
 Because it is the real name of that villain in _Kim Possible_ who went by the
 pseudonym "Gemini". (https://kimpossible.fandom.com/wiki/Gemini)
+
+Though you are free to imagine the shortened name stands for Sheldon Daemon.
+But in that case you'll have to come up with your own explanation.

src/main.rs

@@ -1,49 +1,6 @@
-use std::net::{TcpListener, TcpStream, SocketAddr};
-use std::sync::Arc;
-use std::thread;
-use openssl::ssl::{SslMethod, SslAcceptor, SslStream, SslFiletype};
-use url::Url;
 mod server;
 
-fn build_acceptor() -> std::sync::Arc<SslAcceptor> {
-    let mut acceptor = SslAcceptor::mozilla_intermediate_v5(SslMethod::tls()).unwrap();
-    acceptor.set_private_key_file("doc/key.pem", SslFiletype::PEM).unwrap();
-    acceptor.set_certificate_chain_file("doc/cert.pem").unwrap();
-    acceptor.check_private_key().unwrap();
-    return Arc::new(acceptor.build());
-}
-
-fn build_server() {
-}
-
-fn handle_client(mut stream: SslStream<TcpStream>) {
-    let mut buffer = [0; 1026];
-    stream.ssl_read(&mut buffer);
-    let request = String::from_utf8(buffer.to_vec()).unwrap();
-    let url = Url::parse(&request).unwrap();
-
-    let data = server::handle(&url);
-
-    stream.ssl_write(&data);
-}
-
 fn main() {
-    let addrs = [
-        SocketAddr::from(([127, 0, 0, 1], 1965)),
-    ];
-    let acceptor = build_acceptor();
-    let listener = TcpListener::bind(&addrs[..]).unwrap();
-
-    for stream in listener.incoming() {
-        match stream {
-            Ok(stream) => {
-                let acceptor = acceptor.clone();
-                thread::spawn(move || {
-                    let stream = acceptor.accept(stream).unwrap();
-                    handle_client(stream);
-                });
-            }
-            Err(e) => { /* connection failed */ }
-        }
-    }
+    let server = server::Server::new("gemini://localhost");
+    server.serve();
 }

src/server/handler.rs

@@ -1,16 +1,7 @@
 use url::Url;
-use crate::server::response::{Status, Header, Response};
+use crate::server::response;
+use crate::server::ServerConfig;
 
-pub trait Handler {
-    fn handle(&self, url : Url) -> Option<Response>;
-}
-
-pub struct TestHandler {
-}
-
-impl Handler for TestHandler {
-    fn handle(&self, url : Url) -> Option<Response> {
-        let header = Header::new(Status::Success, "text/gemini");
-        return Some(Response::new(header, Vec::new()));
-    }
+pub fn handle(config: &ServerConfig, url: Url) -> Option<response::Response> {
+    Some(response::invalid_protocol())
 }

src/server/mod.rs

@@ -1,30 +1,79 @@
-use std::vec::Vec;
+use crate::server::response::Response;
+use openssl::ssl::{SslAcceptor, SslFiletype, SslMethod, SslStream};
 use std::collections::HashMap;
+use std::net::{SocketAddr, TcpListener, TcpStream};
+use std::thread;
+use std::vec::Vec;
+use std::sync::Arc;
 use url::Url;
 
-mod handler;
-mod response;
+pub mod response;
+pub mod handler;
+
+#[derive(Clone)]
+pub struct ServerConfig {
+    defaultHost: Url,
+}
 
 pub struct Server {
-    handlers: Vec<Box<dyn handler::Handler>>,
+    acceptor: std::sync::Arc<SslAcceptor>,
+    config: ServerConfig,
 }
 
 impl Server {
-    pub fn new() -> Server {
-        Server{handlers: Vec::<Box<dyn handler::Handler>>::new()}
+    pub fn new(host: &str) -> Server {
+        let config = ServerConfig{defaultHost: Url::parse(host).unwrap()};
+
+        Server {
+            acceptor: build_acceptor(),
+            config: config,
+        }
+    }
+
+    pub fn serve(&self) {
+        let addrs = [SocketAddr::from(([127, 0, 0, 1], 1965))];
+        let listener = TcpListener::bind(&addrs[..]).unwrap();
+
+        for stream in listener.incoming() {
+            match stream {
+                Ok(stream) => {
+                    let acceptor = self.acceptor.clone();
+                    let config = self.config.clone();
+                    thread::spawn(move || {
+                        let stream = acceptor.accept(stream).unwrap();
+                        handle_client(&config, stream);
+                    });
+                }
+                Err(e) => { /* connection failed */ }
+            }
+        }
     }
 }
 
-pub fn register(host: &str, server: Server) {
-////    servers.insert(
-////        host.to_string(),
-////        server,
-////    );
+fn handle_client(config: &ServerConfig, mut stream: SslStream<TcpStream>) {
+    let mut buffer = [0; 1026];
+    stream.ssl_read(&mut buffer);
+    let request = String::from_utf8(buffer.to_vec()).unwrap();
+
+    let location = match Url::parse(&request) {
+        Ok(url) => url,
+        Err(e) => config.defaultHost.join(&request).unwrap(),
+    };
+
+    let response = match handler::handle(config, location) {
+        Some(response) => response,
+        None => response::internal_error(),
+    };
+
+    stream.ssl_write(&response.format());
 }
 
-pub fn handle(url: &Url) -> Vec<u8> {
-    return Vec::new();
+fn build_acceptor() -> std::sync::Arc<SslAcceptor> {
+    let mut acceptor = SslAcceptor::mozilla_intermediate_v5(SslMethod::tls()).unwrap();
+    acceptor
+        .set_private_key_file("doc/key.pem", SslFiletype::PEM)
+        .unwrap();
+    acceptor.set_certificate_chain_file("doc/cert.pem").unwrap();
+    acceptor.check_private_key().unwrap();
+    return Arc::new(acceptor.build());
 }
-
-//static mut servers : HashMap<String, Server> = HashMap::new();
-

src/server/response.rs

@@ -2,12 +2,12 @@ use std::vec::Vec;
 
 #[derive(Copy, Clone)]
 pub enum Status {
-    Input = 1,
-    Success = 2,
-    Redirect = 3,
-    TemporaryFailure = 4,
-    PermanentFailure = 5,
-    ClientCertificateRequired = 6,
+    Input = 10,
+    Success = 20,
+    Redirect = 30,
+    TemporaryFailure = 40,
+    PermanentFailure = 50,
+    ClientCertificateRequired = 60,
 }
 
 pub struct Header {
@@ -22,28 +22,27 @@ pub struct Response {
 
 impl Header {
     pub fn new(status: Status, meta: &str) -> Header {
-        Header{
+        Header {
             status: status,
             meta: meta.to_string(),
         }
     }
 
     pub fn format(&self) -> String {
-        let status: u8 = self.status as u8;
-        return format!("{} {}\r\n", status * 10, self.meta)
+        format!("{} {}\r\n", self.status as u8, self.meta)
     }
 }
 
 impl Response {
     pub fn new(header: Header, data: Vec<u8>) -> Response {
-        Response{
+        Response {
             header: header,
             data: data,
         }
     }
 
     pub fn new_empty(header: Header) -> Response {
-        Response{
+        Response {
             header: header,
             data: Vec::new(),
         }
@@ -56,11 +55,23 @@ impl Response {
     }
 }
 
-pub fn invalid_protocol () -> Response {
-    Response::new_empty(
-        Header::new(
-            Status::PermanentFailure,
-            "this protocol is not supported"
-        ),
-    )
+pub fn invalid_protocol() -> Response {
+    Response::new_empty(Header::new(
+        Status::PermanentFailure,
+        "this protocol is not supported",
+    ))
+}
+
+pub fn not_understood() -> Response {
+    Response::new_empty(Header::new(
+        Status::PermanentFailure,
+        "request not understood",
+    ))
+}
+
+pub fn internal_error() -> Response {
+    Response::new_empty(Header::new(
+        Status::PermanentFailure,
+        "internal server error",
+    ))
 }