todo: prepare for 1.53 API support

sdgb-api/src/title/encryption/mod.rs

@@ -9,7 +9,7 @@ use flate2::write::{ZlibDecoder, ZlibEncoder};
 use spdlog::debug;
 
 use crate::error::ApiError;
-use crate::title::{MaiVersion, MaiVersionExt, Sdgb1_50};
+use crate::title::{MaiVersion, MaiVersionExt, Sdgb1_50, Sdgb1_53};
 
 impl MaiVersionExt for Sdgb1_50 {
     fn decode(mut data: impl AsMut<[u8]>) -> Result<Vec<u8>, ApiError> {
@@ -29,6 +29,24 @@ impl MaiVersionExt for Sdgb1_50 {
     }
 }
 
+impl MaiVersionExt for Sdgb1_53 {
+    fn decode(mut data: impl AsMut<[u8]>) -> Result<Vec<u8>, ApiError> {
+        if data.as_mut().is_empty() {
+            return Err(ApiError::EmptyResponse);
+        }
+
+        debug!("data size: {}", data.as_mut().len());
+        let decrypted = decrypt(&mut data, Self::AES_KEY, Self::AES_IV)?;
+        Ok(decompress(decrypted))
+    }
+
+    fn encode(data: impl AsRef<[u8]>) -> Result<Vec<u8>, ApiError> {
+        let compressed = compress(data)?;
+        let enc = encrypt(compressed, Self::AES_KEY, Self::AES_IV)?;
+        Ok(enc)
+    }
+}
+
 type Aes256CbcEnc = cbc::Encryptor<aes::Aes256>;
 type Aes256CbcDec = cbc::Decryptor<aes::Aes256>;
 

sdgb-api/src/title/mod.rs

@@ -13,7 +13,7 @@ use super::ApiError;
 use nyquest::{
     AsyncClient, Body,
     r#async::Request,
-    header::{ACCEPT_ENCODING, CONTENT_ENCODING, EXPECT, USER_AGENT},
+    header::{ACCEPT_ENCODING, CONTENT_ENCODING, COOKIE, EXPECT, USER_AGENT},
 };
 use serde::{Deserialize, Serialize};
 use spdlog::debug;
@@ -48,7 +48,7 @@ pub trait MaiVersionExt: MaiVersion {
         let payload = Self::encode(json)?;
 
         let api_hash = Self::api_hash(api);
-        let req = Request::post(format!(
+        let mut req = Request::post(format!(
             "https://maimai-gm.wahlap.com:42081/Maimai2Servlet/{api_hash}"
         ))
         .with_body(Body::json_bytes(payload))
@@ -59,6 +59,11 @@ pub trait MaiVersionExt: MaiVersion {
         .with_header(CONTENT_ENCODING, "deflate")
         .with_header(EXPECT, "100-continue");
 
+        // TODO: userid, token
+        if Self::VERSION >= "1.53" {
+            req = req.with_header(COOKIE, format!(""))
+        }
+
         debug!("request: {req:?}");
 
         Ok(req)
@@ -122,6 +127,7 @@ pub trait MaiVersionExt: MaiVersion {
 }
 
 pub struct Sdgb1_50;
+pub struct Sdgb1_53;
 
 impl MaiVersion for Sdgb1_50 {
     const AES_KEY: &[u8; 32] = b"a>32bVP7v<63BVLkY[xM>daZ1s9MBP<R";
@@ -130,3 +136,11 @@ impl MaiVersion for Sdgb1_50 {
 
     const VERSION: &str = "1.50";
 }
+
+impl MaiVersion for Sdgb1_53 {
+    const AES_KEY: &[u8; 32] = b"o2U8F6<adcYl25f_qwx_n]5_qxRcbLN>";
+    const AES_IV: &[u8; 16] = b"AL<G:k:X6Vu7@_U]";
+    const OBFUSECATE_SUFFIX: &str = "MaimaiChnLatuAa81";
+
+    const VERSION: &str = "1.53";
+}