Kris
37493b6da6
新增了Alexa渠道的所有核心功能模块，包括配置管理、请求校验、会话管理、安全验证、去重、响应格式化、渐进式响应、主动推送、提醒功能、配对绑定以及Webhook端点，并完成了插件注册和配置项定义。
58 lines
1.6 KiB
Python
58 lines
1.6 KiB
Python
import random
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import time
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CODE_LENGTH = 6
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CODE_TTL_SECONDS = 600
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PENDING_MAX = 3
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RATE_LIMIT_SECONDS = 3600
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class AlexaPairing:
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def __init__(self):
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self._pending: dict[str, dict] = {}
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self._userid_last_code_at: dict[str, float] = {}
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def generate_code(self, user_id: str) -> str | None:
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now = time.time()
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if user_id in self._userid_last_code_at:
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elapsed = now - self._userid_last_code_at[user_id]
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if elapsed < RATE_LIMIT_SECONDS:
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return None
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if len(self._pending) >= PENDING_MAX:
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oldest = min(self._pending.values(), key=lambda p: p["created_at"])
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if now - oldest["created_at"] < CODE_TTL_SECONDS:
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return None
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expired_userid = next(
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k for k, v in self._pending.items()
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if v == oldest
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)
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del self._pending[expired_userid]
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code = _generate_code()
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self._pending[user_id] = {"code": code, "created_at": now}
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self._userid_last_code_at[user_id] = now
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return code
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def verify(self, user_id: str, code: str) -> bool:
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entry = self._pending.get(user_id)
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if not entry:
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return False
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if time.time() - entry["created_at"] > CODE_TTL_SECONDS:
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del self._pending[user_id]
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return False
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if entry["code"] != code.upper().strip():
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return False
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del self._pending[user_id]
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return True
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def _generate_code() -> str:
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no_ambiguous = "ABCDEFGHJKLMNPQRSTUVWXYZ23456789"
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return "".join(random.choices(no_ambiguous, k=CODE_LENGTH)) |