Parse command line argument.

[rup.git] / src / main.rs

diff --git a/src/main.rs b/src/main.rs
index 24cfdbb..09965c1 100644 (file)
--- a/src/main.rs
+++ b/src/main.rs
@@ -6,7 +6,15 @@ use listenfd::ListenFd;
 use actix_files as fs;
 use actix_web::{web, middleware, App, HttpServer, HttpResponse, Responder, Result, web::Query};
 use askama::Template;
-use serde::{Deserialize};
+
+use ron::de::from_reader;
+use serde::Deserialize;
+use std::{fs::File, env::args};
+
+use itertools::Itertools;
+
+mod consts;
+mod crypto;
 
 #[derive(Template)]
 #[template(path = "main.html")]
@@ -19,20 +27,76 @@ pub struct Request {
    m: Option<String>
 }
 
+static DEFAULT_MESSAGE: &str = "Marc, roule un pet'!";
+static KEY: &str = "secret";
+
 fn main_page(query: Query<Request>) -> Result<HttpResponse> {
     let m =
         match &query.m {
-            Some(b) => &b,
-            None => "Marc, roule un pet'!"
+            Some(b) =>
+                match crypto::decrypt(KEY, b) {
+                    Some(m) => m,
+                    None => String::from(DEFAULT_MESSAGE)
+                },
+            None => String::from(DEFAULT_MESSAGE)
         };
 
-    let hello = MainTemplate { sentence: m };
+    let hello = MainTemplate { sentence: &m };
 
     let s = hello.render().unwrap();
     Ok(HttpResponse::Ok().content_type("text/html").body(s))
 }
 
+#[derive(Debug, Deserialize)]
+struct Config {
+    port: u16
+}
+
+fn get_exe_name() -> String {
+    let first_arg = std::env::args().nth(0).unwrap();
+    //dbg!(&first_arg);
+    let sep: &[_] = &['\\', '/'];
+    first_arg[first_arg.rfind(sep).unwrap()+1..].to_string()
+}
+
+fn print_usage() {
+    println!("Usage:");
+    println!(" {} [--help] [--encrypt <message>]", get_exe_name());
+}
+
 fn main() -> std::io::Result<()> {
+    let args: Vec<String> = args().collect();
+
+    if args.iter().any(|arg| arg == "--help") {
+        print_usage();
+        return Ok(());
+    } else if let Some((position_arg_encrypt, _)) = args.iter().find_position(|arg| arg == &"--encrypt") {
+        match args.iter().nth(position_arg_encrypt + 1) {
+            Some(mess_to_encrypt) => {
+                let encrypted_mess = mess_to_encrypt;
+                //let encrypted_mess = crypto::encrypt(key: &str, plain_text: &str);
+                println!("Encrypted message: {}", encrypted_mess);
+            }
+            None => print_usage()
+        }
+
+        return Ok(());
+    }
+
+    println!("Starting RUP as web server...");
+
+    let config: Config = {
+        let f = File::open(consts::FILE_CONF).expect(&format!("Failed to open configuration file {}", consts::FILE_CONF));
+        match from_reader(f) {
+            Ok(c) => c,
+            Err(e) => panic!("Failed to load config: {}", e)
+        }
+    };
+
+    let key = File::open(consts::FILE_KEY).expect(&format!("Failed to open key file: {}", consts::FILE_KEY));
+
+    println!("Configuration: {:?}", config);
+
     let mut listenfd = ListenFd::from_env();
     let mut server =
         HttpServer::new(
@@ -49,7 +113,7 @@ fn main() -> std::io::Result<()> {
         if let Some(l) = listenfd.take_tcp_listener(0).unwrap() {
             server.listen(l).unwrap()
         } else {
-            server.bind("0.0.0.0:8082").unwrap()
+            server.bind(&format!("0.0.0.0:{}", config.port)).unwrap()
         };
 
     server.run()