75 lines
3.0 KiB
Python
75 lines
3.0 KiB
Python
"""goods 侧(web_save / web_new_encrypt,goodsBiz CHAOS VM 116 opcode)高层 API。
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与 mall 侧(pyvm/mall.py)同属 YYB 加密体系。goods 侧 E3 已验证:
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会话态(xMidasOps 59640 + key16/key1) + 订单参数
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→ build_plaintext 21 字段明文(528 字符)
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→ a:8 变换(Te0-3 + key16 按块轮转)
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→ webSave(33 块变换)
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→ encrypt_msg(1056 hex)
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"""
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from __future__ import annotations
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import json
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from pathlib import Path
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from typing import Any
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from .algorithm import generate_encrypt_msg_offline
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REPLAY = Path(__file__).resolve().parent.parent / "replay"
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ORDER_FIELDS = ["token_id", "openid", "openkey", "session_id", "session_type", "zoneid",
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"pay_method", "buy_quantity", "mb_pwd", "pay_id", "auth_key",
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"card_value", "accounttype", "provide_uin", "extend", "ts",
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"from_h5", "webversion"]
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class GoodsSession:
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"""goods 会话态:xMidasOps(59640,服务端生成)+ key16/key1 + args_template。"""
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def __init__(self, xmidas_ops: list, key16: list, key1: list,
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args_template_d: str = "", xmidas_token: str = ""):
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self.xmidas_ops = xmidas_ops
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self.key16 = key16
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self.key1 = key1
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self.args_template_d = args_template_d
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self.xmidas_token = xmidas_token
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self.validate()
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def validate(self) -> None:
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if len(self.xmidas_ops) != 59640:
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raise ValueError(f"goods xMidasOps 应为 59640,实际 {len(self.xmidas_ops)}")
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if len(self.key16) != 16 or len(self.key1) != 16:
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raise ValueError("key16/key1 应为 16 字节")
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@classmethod
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def from_session_state(cls, path: str | Path) -> "GoodsSession":
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"""从 scripts/capture-session.mjs 生成的 session-state.json 加载。"""
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d = json.loads(Path(path).read_text(encoding="utf-8"))
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return cls(d["xmidas_ops"], d["key16"], d["key1"],
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d.get("args_template_d", ""), d.get("xmidas_token", ""))
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def to_json(self) -> dict:
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return {
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"xmidas_ops": self.xmidas_ops,
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"key16": self.key16,
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"key1": self.key1,
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"args_template_d": self.args_template_d,
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"xmidas_token": self.xmidas_token,
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}
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@classmethod
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def from_json(cls, d: dict) -> "GoodsSession":
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return cls(d["xmidas_ops"], d["key16"], d["key1"],
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d.get("args_template_d", ""), d.get("xmidas_token", ""))
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def generate_encrypt_msg(session: GoodsSession, order: dict) -> str:
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"""用会话态 + 订单参数生成 goods encrypt_msg(1056 hex)。"""
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from .algorithm import decode_d
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params = {k: order.get(k, "") for k in ORDER_FIELDS}
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args_tpl = decode_d(session.args_template_d) if session.args_template_d else None
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return generate_encrypt_msg_offline(
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params, order.get("fk_extend", ""), order.get("ts", ""), order.get("_rand", ""),
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xmidas=session.xmidas_ops, xmidas_token=session.xmidas_token,
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args_template=args_tpl, key16=session.key16, key1=session.key1,
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)
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