Add compatibility middleware

[rbdr/olden-mail] / src / proxy.rs

diff --git a/src/proxy.rs b/src/proxy.rs
index a2f62e4bac4a8697a17e26a4bd41c6b3b023f818..2798df372642f4abf497706ab8ad9cbe8624489a 100644 (file)
--- a/src/proxy.rs
+++ b/src/proxy.rs
@@ -42,6 +42,7 @@ use std::thread::{sleep, spawn, JoinHandle};
 use std::time::Duration;
 
 use crate::configuration::Proxy;
 use std::time::Duration;
 
 use crate::configuration::Proxy;

+use crate::middleware::MIDDLEWARE;

 
 /// A proxy server that listens for plaintext connections and forwards them
 /// via TLS.
 
 /// A proxy server that listens for plaintext connections and forwards them
 /// via TLS.


@@ -72,7 +73,7 @@ impl Server {
         let running_clone = Arc::clone(&running);
 
         let thread_handle = spawn(move || {
         let running_clone = Arc::clone(&running);
 
         let thread_handle = spawn(move || {

-            run_proxy(configuration, running_clone);
+            run_proxy(&configuration, &running_clone);

         });
 
         Server {
         });
 
         Server {


@@ -93,7 +94,7 @@ impl Server {
 
 /// The main loop that listens for incoming (plaintext) connections on
 /// `configuration.bind_address:configuration.local_port`.
 
 /// The main loop that listens for incoming (plaintext) connections on
 /// `configuration.bind_address:configuration.local_port`.

-fn run_proxy(configuration: Arc<Proxy>, running: Arc<AtomicBool>) {
+fn run_proxy(configuration: &Arc<Proxy>, running: &Arc<AtomicBool>) {

     let listener = match TcpListener::bind(format!(
         "{}:{}",
         configuration.bind_address, configuration.local_port
     let listener = match TcpListener::bind(format!(
         "{}:{}",
         configuration.bind_address, configuration.local_port


@@ -119,9 +120,9 @@ fn run_proxy(configuration: Arc<Proxy>, running: Arc<AtomicBool>) {
             Ok((stream, addr)) => {
                 info!("New {} connection from {}", configuration.protocol, addr);
 
             Ok((stream, addr)) => {
                 info!("New {} connection from {}", configuration.protocol, addr);
 

-                let configuration_clone = Arc::clone(&configuration);
+                let configuration_clone = Arc::clone(configuration);

                 let handle = spawn(move || {
                 let handle = spawn(move || {

-                    handle_client(stream, configuration_clone);
+                    handle_client(stream, &configuration_clone);

                 });
                 active_threads.push(handle);
             }
                 });
                 active_threads.push(handle);
             }


@@ -152,7 +153,7 @@ fn run_proxy(configuration: Arc<Proxy>, running: Arc<AtomicBool>) {
 }
 
 /// Handles a single client connection by bridging it (plaintext) to a TLS connection.
 }
 
 /// Handles a single client connection by bridging it (plaintext) to a TLS connection.

-fn handle_client(client_stream: TcpStream, configuration: Arc<Proxy>) {
+fn handle_client(client_stream: TcpStream, configuration: &Arc<Proxy>) {

     if let Err(e) = client_stream.set_nonblocking(true) {
         error!("Failed to set client stream to nonblocking: {}", e);
         return;
     if let Err(e) = client_stream.set_nonblocking(true) {
         error!("Failed to set client stream to nonblocking: {}", e);
         return;


@@ -213,7 +214,6 @@ fn handle_client(client_stream: TcpStream, configuration: Arc<Proxy>) {
         let mut buffer = [0u8; 8192];
         let mut client_reader = client_stream;
         loop {
         let mut buffer = [0u8; 8192];
         let mut client_reader = client_stream;
         loop {

-            debug!(">");

             let bytes_read = match client_reader.read(&mut buffer) {
                 Ok(0) => break,
                 Ok(n) => n,
             let bytes_read = match client_reader.read(&mut buffer) {
                 Ok(0) => break,
                 Ok(n) => n,


@@ -227,7 +227,13 @@ fn handle_client(client_stream: TcpStream, configuration: Arc<Proxy>) {
                 }
             };
 
                 }
             };
 

-            let debug_str = String::from_utf8_lossy(&buffer[..bytes_read])
+            let mut command = buffer[..bytes_read].to_vec();
+
+            for middleware in MIDDLEWARE {
+                command = middleware(&command);
+            }
+
+            let debug_str = String::from_utf8_lossy(&command)

                 .replace('\n', "\\n")
                 .replace('\r', "\\r")
                 .replace('\t', "\\t");
                 .replace('\n', "\\n")
                 .replace('\r', "\\r")
                 .replace('\t', "\\t");


@@ -260,7 +266,6 @@ fn handle_client(client_stream: TcpStream, configuration: Arc<Proxy>) {
         let mut buffer = [0u8; 8192];
         let mut client_writer = client_stream_clone;
         loop {
         let mut buffer = [0u8; 8192];
         let mut client_writer = client_stream_clone;
         loop {

-            debug!("<");

             // Lock the TLS stream and read from the server
             let bytes_read = match tls_stream_clone.lock() {
                 Ok(mut tls_guard) => match tls_guard.read(&mut buffer) {
             // Lock the TLS stream and read from the server
             let bytes_read = match tls_stream_clone.lock() {
                 Ok(mut tls_guard) => match tls_guard.read(&mut buffer) {