Initial commit: Add maimaiDX API web application with AimeDB scanning and logging features
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kejiz
352
backend/API_TitleServer.py
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352
backend/API_TitleServer.py
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# 舞萌DX
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# 标题服务器通讯实现
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import zlib
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import hashlib
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import random
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import time
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import httpx
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from loguru import logger
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from ctypes import c_int32
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from Crypto.Cipher import AES
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from Crypto.Util.Padding import pad, unpad
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from Config import (
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useProxy,
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proxyUrl,
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)
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AesKey = "a>32bVP7v<63BVLkY[xM>daZ1s9MBP<R"
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AesIV = "d6xHIKq]1J]Dt^ue"
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ObfuscateParam = "B44df8yT"
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def use2024Api():
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global AesKey, AesIV, ObfuscateParam
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AesKey = "n7bx6:@Fg_:2;5E89Phy7AyIcpxEQ:R@"
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AesIV = ";;KjR1C3hgB1ovXa"
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ObfuscateParam = "BEs2D5vW"
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class SDGBApiError(Exception):
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pass
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class SDGBRequestError(SDGBApiError):
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pass
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class SDGBResponseError(SDGBApiError):
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pass
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class aes_pkcs7(object):
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def __init__(self, key: str, iv: str):
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self.key = key.encode("utf-8")
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self.iv = iv.encode("utf-8")
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self.mode = AES.MODE_CBC
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def encrypt(self, content: bytes) -> bytes:
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cipher = AES.new(self.key, self.mode, self.iv)
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content_padded = pad(content, AES.block_size)
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encrypted_bytes = cipher.encrypt(content_padded)
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return encrypted_bytes
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def decrypt(self, content):
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cipher = AES.new(self.key, self.mode, self.iv)
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decrypted_padded = cipher.decrypt(content)
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decrypted = unpad(decrypted_padded, AES.block_size)
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return decrypted
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def pkcs7unpadding(self, text):
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length = len(text)
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unpadding = ord(text[length - 1])
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return text[0 : length - unpadding]
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def pkcs7padding(self, text):
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bs = 16
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length = len(text)
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bytes_length = len(text.encode("utf-8"))
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padding_size = length if (bytes_length == length) else bytes_length
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padding = bs - padding_size % bs
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padding_text = chr(padding) * padding
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return text + padding_text
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def getSDGBApiHash(api):
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# API 的 Hash 的生成
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# 有空做一下 Hash 的彩虹表？
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return hashlib.md5((api + "MaimaiChn" + ObfuscateParam).encode()).hexdigest()
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def apiSDGB(
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data: str,
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targetApi: str,
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userAgentExtraData: str,
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noLog: bool = False,
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timeout: int = 5,
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maxRetries: int = 3,
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) -> str:
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"""
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舞萌DX 2025 API 通讯用函数
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:param data: 请求数据
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:param targetApi: 使用的 API
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:param userAgentExtraData: UA 附加信息，机台相关则为狗号（如A63E01E9564），用户相关则为 UID
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:param noLog: 是否不记录日志
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:param timeout: 请求超时时间（秒）
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:return: 解码后的响应数据
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"""
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# 处理参数
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agentExtra = str(userAgentExtraData)
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aes = aes_pkcs7(AesKey, AesIV)
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endpoint = "https://maimai-gm.wahlap.com:42081/Maimai2Servlet/"
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# 准备好请求数据
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requestDataFinal = aes.encrypt(zlib.compress(data.encode("utf-8")))
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if not noLog:
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logger.debug(f"[Stage 1] 准备开始请求 {targetApi}，以 {data}")
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retries = 0
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while retries < maxRetries:
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try:
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# 配置 HTTP 客户端
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if useProxy and proxyUrl:
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logger.debug("使用代理")
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httpClient = httpx.Client(proxy=proxyUrl, verify=False)
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else:
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httpClient = httpx.Client(verify=False)
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api_hash = getSDGBApiHash(targetApi)
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logger.info(f"hash: {api_hash}")
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# 发送请求
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response = httpClient.post(
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url=endpoint + api_hash,
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headers={
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"User-Agent": f"{api_hash}#{agentExtra}",
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"Content-Type": "application/json",
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"Mai-Encoding": "1.50",
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"Accept-Encoding": "",
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"Charset": "UTF-8",
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"Content-Encoding": "deflate",
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"Expect": "100-continue",
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},
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content=requestDataFinal, # 数据
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timeout=timeout,
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)
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if not noLog:
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logger.info(f"[Stage 2] {targetApi} 请求结果: {response.status_code}")
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if response.status_code != 200:
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errorMessage = f"[Stage 2] 请求失败: {response.status_code}"
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logger.error(errorMessage)
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raise SDGBRequestError(errorMessage)
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# 处理响应内容
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responseContentRaw = response.content
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# 先尝试解密
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try:
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responseContentDecrypted = aes.decrypt(responseContentRaw)
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if not noLog:
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logger.debug("[Stage 3] Decryption SUCCESS.")
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except Exception as e:
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logger.warning(
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f"[Stage 3] Decryption FAILED. Raw Content: {responseContentRaw}, Error: {e}"
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)
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raise SDGBResponseError("Decryption failed")
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# 然后尝试解压
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try:
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# 看看文件头是否是压缩过的
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if responseContentDecrypted.startswith(b"\x78\x9c"):
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logger.debug("[Stage 4] Zlib detected, decompressing...")
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responseContentFinal = zlib.decompress(
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responseContentDecrypted
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).decode("utf-8")
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else:
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logger.warning(
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f"[Stage 4] Not Zlib Format!! using raw content: {responseContentDecrypted}"
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)
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responseContentFinal = responseContentDecrypted.decode("utf-8")
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# 完成解压
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if not noLog:
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logger.debug(
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f"[Stage 4] Process OK, Content: {responseContentFinal}"
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)
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# 最终处理，检查是否是 JSON 格式
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if responseContentFinal.startswith(
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"{"
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) and responseContentFinal.endswith("}"):
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# 如果是 JSON 格式，直接返回
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logger.debug("[Stage 5] Response is JSON, returning.")
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return responseContentFinal
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else:
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# 如果不是 JSON 格式，直接返回但是警告
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logger.warning(
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"[Stage 5] Response is not JSON, returning as is, take care!"
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)
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return responseContentFinal
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except Exception:
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logger.warning(f"解压失败，原始响应: {responseContentDecrypted}")
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raise SDGBResponseError("解压失败")
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except SDGBRequestError as e:
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logger.error(f"请求格式错误: {e}")
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raise
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except SDGBResponseError as e:
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logger.warning(f"响应错误，将重试: {e}")
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retries += 1
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time.sleep(2)
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except Exception as e:
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logger.warning(f"请求失败，将重试: {e}")
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retries += 1
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time.sleep(2)
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finally:
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if "httpClient" in locals():
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httpClient.close()
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raise SDGBApiError("重试多次仍然无法成功请求服务器")
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def calcPlaySpecial():
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"""使用 c_int32 实现的 SpecialNumber 算法"""
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rng = random.SystemRandom()
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num2 = rng.randint(1, 1037933) * 2069
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num2 += 1024 # GameManager.CalcSpecialNum()
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num2 = c_int32(num2).value
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result = c_int32(0)
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for _ in range(32):
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result.value <<= 1
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result.value += num2 & 1
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num2 >>= 1
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return c_int32(result.value).value
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class AESPKCS7_2024:
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# 实现了 maimai 通讯所用的 AES 加密的类
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def __init__(self, key: str, iv: str):
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self.key = key.encode("utf-8")
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self.iv = iv.encode("utf-8")
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self.mode = AES.MODE_CBC
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# 加密
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def encrypt(self, content) -> bytes:
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# if content is str, convert to bytes
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if isinstance(content, str):
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encodedData = content.encode("utf-8")
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cipher = AES.new(self.key, self.mode, self.iv)
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content_padded = pad(encodedData, AES.block_size)
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encrypted_bytes = cipher.encrypt(content_padded)
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return encrypted_bytes
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# 解密
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def decrypt(self, encrypted_content: bytes) -> str:
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cipher = AES.new(self.key, self.mode, self.iv)
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decrypted_padded = cipher.decrypt(encrypted_content)
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decrypted = unpad(decrypted_padded, AES.block_size)
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return decrypted
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def apiSDGB_2024(
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data: str,
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targetApi: str,
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userAgentExtraData: str,
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noLog: bool = False,
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timeout: int = 5,
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):
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"""
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舞萌DX 2024 API 通讯用函数
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:param data: 请求数据
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:param targetApi: 使用的 API
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:param userAgentExtraData: UA 附加信息，机台相关则为狗号（如A63E01E9564），用户相关则为 UID
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:param noLog: 是否不记录日志
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"""
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maxRetries = 3
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agentExtra = str(userAgentExtraData)
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aes = AESPKCS7_2024(AesKey, AesIV)
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reqData_encrypted = aes.encrypt(data)
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reqData_deflated = zlib.compress(reqData_encrypted)
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endpoint = "https://maimai-gm.wahlap.com:42081/Maimai2Servlet/"
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if not noLog:
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logger.debug(f"开始请求 {targetApi}，以 {data}")
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retries = 0
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while retries < maxRetries:
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try:
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if useProxy:
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# 使用代理
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logger.debug("使用代理")
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httpClient = httpx.Client(proxy=proxyUrl, verify=False)
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else:
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# 不使用代理
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logger.debug("不使用代理")
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httpClient = httpx.Client(verify=False)
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responseOriginal = httpClient.post(
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url=endpoint + getSDGBApiHash(targetApi),
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headers={
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"User-Agent": f"{getSDGBApiHash(targetApi)}#{agentExtra}",
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"Content-Type": "application/json",
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"Mai-Encoding": "1.40",
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"Accept-Encoding": "",
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"Charset": "UTF-8",
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"Content-Encoding": "deflate",
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"Expect": "100-continue",
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},
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content=reqData_deflated,
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# 经测试，加 Verify 之后速度慢好多，因此建议选择性开
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# verify=certifi.where(),
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# verify=False,
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timeout=timeout,
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)
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if not noLog:
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logger.info(f"{targetApi} 请求结果: {responseOriginal.status_code}")
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if responseOriginal.status_code == 200:
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logger.debug("200 OK!")
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else:
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errorMessage = f"请求失败: {responseOriginal.status_code}"
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logger.error(errorMessage)
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raise SDGBRequestError(errorMessage)
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responseRAWContent = responseOriginal.content
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try:
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responseDecompressed = zlib.decompress(responseRAWContent)
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logger.debug("成功解压响应！")
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except Exception:
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logger.warning(f"无法解压，得到的原始响应: {responseRAWContent}")
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raise SDGBResponseError("解压失败")
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try:
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resultResponse = aes.decrypt(responseDecompressed)
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logger.debug("成功解密响应！")
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except Exception:
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logger.warning(f"解密失败，得到的原始响应: {responseDecompressed}")
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raise SDGBResponseError("解密失败")
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if not noLog:
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logger.debug(f"响应: {resultResponse}")
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return resultResponse
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# 异常处理
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except SDGBRequestError:
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# 请求格式错误，不需要重试
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raise SDGBRequestError("请求格式错误")
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except SDGBResponseError as e:
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# 响应解析错误，这种有一定可能是我们的问题，所以只重试一次
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logger.warning(f"将重试一次 Resp Err: {e}")
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retries += 2
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time.sleep(2)
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except Exception as e:
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# 其他错误，重试多次
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logger.warning(f"将开始重试请求. {e}")
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retries += 1
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time.sleep(2)
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raise SDGBApiError("重试多次仍然无法成功请求服务器")
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