Add decipher function.

[rup.git] / src / main.rs

diff --git a/src/main.rs b/src/main.rs
index b86ce57..2480260 100644 (file)
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,7 @@
 extern crate actix_web;
 extern crate listenfd;
 extern crate askama;
+extern crate percent_encoding;
 
 use listenfd::ListenFd;
 use actix_files as fs;
@@ -28,18 +29,15 @@ 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) =>
                 match crypto::decrypt(KEY, b) {
-                    Some(m) => m,
-                    None => String::from(DEFAULT_MESSAGE)
+                    Ok(m) => m,
+                    Err(_e) => String::from(consts::DEFAULT_MESSAGE) // TODO: log error.
                 },
-            None => String::from(DEFAULT_MESSAGE)
+            None => String::from(consts::DEFAULT_MESSAGE)
         };
 
     let hello = MainTemplate { sentence: &m };
@@ -59,12 +57,6 @@ fn get_exe_name() -> String {
     let sep: &[_] = &['\\', '/'];
     first_arg[first_arg.rfind(sep).unwrap()+1..].to_string()
 }
-
-fn print_usage() {
-    println!("Usage:");
-    println!(" {} [--help] [--encrypt <plain-text>|--decrypt <cipher-text>]", get_exe_name());
-}
-
 fn read_key() -> String {
     let mut key = String::new();
     File::open(consts::FILE_KEY)
@@ -73,44 +65,17 @@ fn read_key() -> String {
         .expect(&format!("Failed to read key file: {}", consts::FILE_KEY));
 
     String::from(
-        url::percent_encoding::percent_decode(key.as_bytes())
+        percent_encoding::percent_decode(key.as_bytes())
             .decode_utf8()
             .expect(&format!("Failed to decode key file: {}", consts::FILE_KEY))
     )
 }
 
 fn main() -> std::io::Result<()> {
-    let args: Vec<String> = args().collect();
 
     let key = read_key();
 
-    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 = crypto::encrypt(&key, mess_to_encrypt);
-                let encrypted_mess_encoded = url::percent_encoding::utf8_percent_encode(&encrypted_mess, url::percent_encoding::DEFAULT_ENCODE_SET).to_string();
-                println!("Encrypted message percent-encoded: {}", encrypted_mess_encoded);
-            }
-            None => print_usage()
-        }
-
-        return Ok(());
-    } else if let Some((position_arg_decrypt, _)) = args.iter().find_position(|arg| arg == &"--decrypt") {
-        match args.iter().nth(position_arg_decrypt + 1) {
-            Some(cipher_text) => {
-                let cipher_text_decoded = url::percent_encoding::percent_decode(cipher_text.as_bytes()).decode_utf8().expect("Unable to decode encoded cipher text");
-                let plain_text = crypto::decrypt(&key, &cipher_text_decoded).unwrap();
-                println!("Decrypted message: {}", plain_text);
-            }
-            None => print_usage()
-        }
-
-        return Ok(());
-    }
+    if process_args(&key) { return Ok(()) }
 
     println!("Starting RUP as web server...");
 
@@ -145,3 +110,49 @@ fn main() -> std::io::Result<()> {
 
     server.run()
 }
+
+fn process_args(key: &String) -> bool {
+    fn print_usage() {
+        println!("Usage:");
+        println!(" {} [--help] [--encrypt <plain-text>|--decrypt <cipher-text>]", get_exe_name());
+    }
+
+    let args: Vec<String> = args().collect();
+
+    if args.iter().any(|arg| arg == "--help") {
+        print_usage();
+        return true
+    } 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) => {
+                match crypto::encrypt(&key, mess_to_encrypt) {
+                    Ok(encrypted_mess) => {
+                        let encrypted_mess_encoded = percent_encoding::utf8_percent_encode(&encrypted_mess, percent_encoding::NON_ALPHANUMERIC).to_string();
+                        println!("Encrypted message percent-encoded: {}", encrypted_mess_encoded); },
+                    Err(error) =>
+                        println!("Unable to encrypt: {:?}", error)
+                }
+            }
+            None => print_usage()
+        }
+
+        return true
+    } else if let Some((position_arg_decrypt, _)) = args.iter().find_position(|arg| arg == &"--decrypt") {
+        match args.iter().nth(position_arg_decrypt + 1) {
+            Some(cipher_text) => {
+                let cipher_text_decoded = percent_encoding::percent_decode(cipher_text.as_bytes()).decode_utf8().expect("Unable to decode encoded cipher text");
+                match crypto::decrypt(&key, &cipher_text_decoded) {
+                    Ok(plain_text) =>
+                        println!("Decrypted message: {}", plain_text),
+                    Err(error) =>
+                        println!("Unable to decrypt: {:?}", error)
+                }
+            }
+            None => print_usage()
+        }
+
+        return true
+    }
+
+    return false
+}