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import binascii
import json
import os
import secrets
from hashlib import sha1
from fastapi import Request
from passlib.context import CryptContext
from starlette.exceptions import HTTPException
from starlette.status import HTTP_102_PROCESSING, HTTP_404_NOT_FOUND, HTTP_425_TOO_EARLY
from core.config import settings
from core.db import redis_session_client
from models import User
pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
async def create_sesssion_token(user: User, remember_me: bool, request: Request) -> str:
session_token = secrets.token_hex(nbytes=16)
expire_time = (
settings.SESSION_EXPIRE_TIME_EXTENDED
if remember_me
else settings.SESSION_EXPIRE_TIME
)
active_sessions = await redis_session_client.client.get(
f"user_{user.id}_sessions", encoding="utf-8"
)
if active_sessions:
active_sessions = json.loads(active_sessions)
else:
active_sessions = {"uid": user.id, "sessions": []}
active_sessions["sessions"].append(
{
"token": session_token,
"ua": request.headers.get("user-agent"),
"ip": request.client.host,
}
)
data = {
session_token: user.id,
f"user_{user.id}_sessions": json.dumps(active_sessions),
}
await redis_session_client.client.mset(data)
await redis_session_client.client.expire(session_token, expire_time)
return session_token
async def create_2fa_temp_token(user: User, remember_me: bool) -> str:
session_token = secrets.token_hex(nbytes=16)
await redis_session_client.client.setex(
f"two_fa_temp_{session_token}",
settings.TWO_FA_TIMEOUT * 1000,
json.dumps({"user": user.id, "remember_me": remember_me}),
)
return session_token
async def create_passwordless_create_token() -> str:
token = secrets.token_hex(nbytes=16)
await redis_session_client.client.setex(
f"password_less_{token}",
settings.PASSWORD_LESS_CREATE_TIMEOUT * 1000,
"-1",
)
return token
async def authorize_passwordless_token(user: User, token: str) -> bool:
value = await redis_session_client.client.get(
f"password_less_{token}",
)
if value == None:
raise HTTPException(status_code=HTTP_404_NOT_FOUND,
detail="Invalid token!")
elif int(value) == -1:
await redis_session_client.client.setex(
f"password_less_{token}",
settings.PASSWORD_LESS_CREATE_TIMEOUT * 1000,
user.id,
)
return True
async def verify_passwordless_token(token: str) -> int:
value = (await redis_session_client.client.get(
f"password_less_{token}",
)).decode("UTF-8")
if value == None:
raise HTTPException(
status_code=HTTP_404_NOT_FOUND,
detail="Invalid token!"
)
elif value == "-1":
raise HTTPException(
status_code=HTTP_425_TOO_EARLY,
detail="Waiting for authorization!"
)
else:
await redis_session_client.client.delete(
f"password_less_{token}",
)
return int(value)
async def create_2fa_enable_temp_token(user: User, totp_secret: str):
await redis_session_client.client.setex(
f"two_fa_enable_temp_{user.id}",
settings.TWO_FA_TIMEOUT * 1000,
totp_secret
)
return
def verify_password(plain_password: str, hashed_password: str) -> bool:
return pwd_context.verify(plain_password, hashed_password)
def get_password_hash(password: str) -> str:
return pwd_context.hash(password)
def get_uid_hash(uid: str) -> str:
hasher = sha1()
hasher.update(bytes(f"uid_{uid}", "utf-8"))
return hasher.hexdigest()[3:10]
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