I hate encryption

.gitignore

@@ -1,14 +1,2 @@
-# Generated by Cargo
-# will have compiled files and executables
-debug/
+a/
 target/
-
-# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
-# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
-Cargo.lock
-
-# These are backup files generated by rustfmt
-**/*.rs.bk
-
-# MSVC Windows builds of rustc generate these, which store debugging information
-*.pdb

Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "ew"
+version = "0.0.1"
+edition = "2021"
+
+[dependencies]
+actix-web = { version = "4.5.1", features = [ "openssl" ] }
+openssl = { version = "0.10" }
+base64 = "0.21.5"
+reqwest = { version = "0.11", features = ["blocking"] }

cert.pem

@@ -0,0 +1,29 @@
+-----BEGIN CERTIFICATE-----
+MIIFCTCCAvGgAwIBAgIUPwpd0f3pYA4pKar2Qg9IGfuM4x0wDQYJKoZIhvcNAQEL
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+vhyD2hWLAPVt2gGp0t/lF1NWwJy/xCJnti2lLYGc23BJJhKXmT5D8WnxMYnK
+-----END CERTIFICATE-----

key.pem

@@ -0,0 +1,52 @@
+-----BEGIN PRIVATE KEY-----
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+Ulo31znSDnAUYFEHQo/FadDUm5xCpiY=
+-----END PRIVATE KEY-----

src/encryption.rs

@@ -0,0 +1,24 @@
+use openssl::symm::{Cipher, Crypter, Mode};
+use openssl::error::ErrorStack;
+use base64::{Engine as _, engine::general_purpose};
+
+const IV_LENGTH: usize = 16;
+const KEY: &str = "3559b435f24b297a79c68b9709ef2125";
+
+pub fn decrypt_packet(base64_input: &str) -> Result<String, ErrorStack> {
+    let base64_buffer = general_purpose::STANDARD.decode(base64_input).unwrap();
+
+    let decryption_iv = &base64_buffer[..IV_LENGTH];
+    let ciphertext = &base64_buffer[IV_LENGTH..];
+
+    let cipher = Cipher::aes_256_cbc();
+    let mut decrypter = Crypter::new(cipher, Mode::Decrypt, KEY.as_bytes(), Some(decryption_iv))?;
+
+    let mut decrypted_data = vec![0u8; ciphertext.len() + cipher.block_size()];
+    let mut decrypted_len = decrypter.update(ciphertext, &mut decrypted_data)?;
+    decrypted_len += decrypter.finalize(&mut decrypted_data[decrypted_len..])?;
+    
+    decrypted_data.truncate(decrypted_len);
+
+    Ok(String::from_utf8(decrypted_data).unwrap())
+}

src/main.rs

@@ -0,0 +1,101 @@
+mod encryption;
+use actix_web::{
+   // post,
+   // get,
+    HttpResponse,
+    HttpRequest,
+    http::header::HeaderMap,
+    web,
+    dev::Service
+};
+use openssl::ssl::{SslAcceptor, SslFiletype, SslMethod};
+
+async fn make_post_request(url: &str, body: &str, headers: &HeaderMap) -> Result<String, reqwest::Error> {
+    let client = reqwest::Client::new();
+    let mut response = client
+        .post(url)
+        .body(body.to_string());
+    
+    for (name, value) in headers.iter() {
+        if name == "Accept-Encoding" {continue;};
+        if name == "host" {
+            response = response.header("host", "api.app.lovelive-sif2.bushimo.jp");
+            continue;
+        };
+        response = response.header(name, value.to_str().unwrap());
+    }
+    
+    let response_body = response.send().await?.text().await?;
+    
+    Ok(response_body)
+}
+
+async fn make_get_request(url: &str, headers: &HeaderMap) -> Result<String, reqwest::Error> {
+    let client = reqwest::Client::new();
+    let mut response = client.get(url);
+    for (name, value) in headers.iter() {
+        if name == "Accept-Encoding" {continue;};
+        if name == "host" {
+            response = response.header("host", "api.app.lovelive-sif2.bushimo.jp");
+            continue;
+        };
+        response = response.header(name, value.to_str().unwrap());
+    }
+    let response_body = response.send().await?.text().await?;
+    Ok(response_body)
+}
+
+async fn log_unknown_request(req: HttpRequest, body: String) -> HttpResponse {
+    if body != String::new() {
+        println!("req: {}", encryption::decrypt_packet(&body).unwrap_or(String::new()));
+        let resp = make_post_request(&format!("https://api.app.lovelive-sif2.bushimo.jp{}", req.path()), &body, req.headers()).await.unwrap();
+        
+        //println!("Unhandled request: {} {}", req.path(), body);
+        println!("resp: {}", encryption::decrypt_packet(&resp).unwrap_or(String::new()));
+        HttpResponse::Ok().body(resp)
+    } else {
+        let resp = make_get_request(&format!("https://api.app.lovelive-sif2.bushimo.jp{}", req.path()), req.headers()).await.unwrap();
+        
+        //println!("Unhandled request: {} {}", req.path(), body);
+        println!("resp: {}", encryption::decrypt_packet(&resp).unwrap_or(String::new()));
+        HttpResponse::Ok().body(resp)
+        
+    }
+}
+
+#[actix_web::main]
+async fn main() -> std::io::Result<()> {
+    use actix_web::{App, HttpServer};
+
+    let mut builder = SslAcceptor::mozilla_intermediate(SslMethod::tls()).unwrap();
+    builder
+        .set_private_key_file("key.pem", SslFiletype::PEM)
+        .unwrap();
+    builder.set_certificate_chain_file("cert.pem").unwrap();
+
+    let rv = HttpServer::new(|| App::new()
+        .wrap_fn(|req, srv| {
+            println!("Request: {}", req.path());
+            srv.call(req)
+        })
+        .default_service(web::route().to(log_unknown_request)))
+        .bind_openssl("0.0.0.0:8080", builder)?
+        .run();
+    println!("Server started: http://127.0.0.1:{}", 8080);
+    rv.await
+}
+/*
+fn main() {
+    let base64_input = "MX2tzmKTxY7EsV46rYFZuAfxeY0tPHuZ0etG15WsK1MAzs/U0WUXE4bJZINrEvCxqqUbvCYxhDtXp3HoeH/zDXtnW183aF/aYycmUW3aAF6zyio4/PJoqFl7EGET37ruotoQ9Teof2PXpXraF94diw==";
+    match decrypt_packet(base64_input) {
+        Ok(decrypted_json) => {
+            // Process the decrypted JSON
+            println!("Decrypted JSON: {}", decrypted_json);
+        }
+        Err(err) => {
+            eprintln!("Error decrypting packet: {}", err);
+        }
+    }
+}
+
+*/