111 lines
3.5 KiB
Python
111 lines
3.5 KiB
Python
from __future__ import annotations
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from datetime import datetime, timedelta, timezone
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from typing import Any
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import bcrypt
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import jwt
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from fastapi import Depends, HTTPException, Security, status
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from fastapi.security import APIKeyHeader, HTTPAuthorizationCredentials, HTTPBearer
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from sqlalchemy import select
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from sqlalchemy.orm import Session
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from app.core.config import get_settings
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from app.core.database import get_db
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_bearer = HTTPBearer(auto_error=False)
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_api_key = APIKeyHeader(name="X-API-Token", auto_error=False)
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def _password_bytes(password: str) -> bytes:
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# bcrypt limit is 72 bytes; truncate UTF-8 safely for hashing
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raw = password.encode("utf-8")
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return raw[:72]
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def hash_password(password: str) -> str:
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return bcrypt.hashpw(_password_bytes(password), bcrypt.gensalt()).decode("ascii")
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def verify_password(password: str, password_hash: str) -> bool:
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try:
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return bcrypt.checkpw(_password_bytes(password), password_hash.encode("ascii"))
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except Exception:
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return False
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def _jwt_secret() -> str:
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settings = get_settings()
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return (settings.jwt_secret or settings.api_token or "changeme").strip()
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def create_access_token(username: str, user_id: int) -> str:
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settings = get_settings()
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expire = datetime.now(timezone.utc) + timedelta(hours=settings.jwt_expire_hours)
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payload = {"sub": username, "uid": user_id, "exp": expire}
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return jwt.encode(payload, _jwt_secret(), algorithm="HS256")
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def decode_access_token(token: str) -> dict[str, Any]:
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try:
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return jwt.decode(token, _jwt_secret(), algorithms=["HS256"])
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except jwt.PyJWTError as e:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Invalid or expired token",
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) from e
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def require_auth(
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bearer: HTTPAuthorizationCredentials | None = Security(_bearer),
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api_key: str | None = Security(_api_key),
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db: Session = Depends(get_db),
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) -> dict[str, Any]:
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"""Accept JWT from login, or legacy shared API_TOKEN."""
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from app.models import User
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settings = get_settings()
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raw = None
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if bearer and bearer.credentials:
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raw = bearer.credentials
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elif api_key:
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raw = api_key
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if not raw:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Требуется вход",
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)
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# Legacy shared token (scripts / migration)
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if settings.api_token and raw == settings.api_token:
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return {"username": "api_token", "uid": 0, "legacy": True}
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payload = decode_access_token(raw)
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username = str(payload.get("sub") or "")
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uid = int(payload.get("uid") or 0)
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user = db.scalar(select(User).where(User.id == uid)) if uid else None
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if not user or user.username != username:
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user = db.scalar(select(User).where(User.username == username))
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if not user:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="User not found")
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return {"username": user.username, "uid": user.id, "legacy": False}
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# Back-compat alias used by older imports
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require_token = require_auth
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AuthDep = Depends(require_auth)
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def ensure_admin_user(db: Session) -> None:
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from app.models import User
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settings = get_settings()
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username = (settings.admin_username or "admin").strip() or "admin"
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password = (settings.admin_password or settings.api_token or "changeme").strip() or "changeme"
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user = db.scalar(select(User).where(User.username == username))
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if user:
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return
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db.add(User(username=username, password_hash=hash_password(password)))
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db.commit()
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