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https://github.com/alerta/alerta.git
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43 lines
1.4 KiB
Python
43 lines
1.4 KiB
Python
import base64
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import hashlib
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import hmac
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import os
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from typing import List
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from flask import Flask
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from alerta.models.enums import ADMIN_SCOPES, Scope
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class ApiKeyHelper:
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def __init__(self, app: Flask = None) -> None:
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self.app = app
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if app is not None:
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self.init_app(app)
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def init_app(self, app: Flask) -> None:
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self.secret_key = app.config['SECRET_KEY']
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self.admin_users = app.config['ADMIN_USERS']
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self.user_default_scopes = [Scope(s) for s in app.config['USER_DEFAULT_SCOPES']] # type: List[str]
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self.api_key_expire_days = app.config['API_KEY_EXPIRE_DAYS']
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def generate(self) -> str:
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random = str(os.urandom(32)).encode('utf-8')
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digest = hmac.new(self.secret_key.encode('utf-8'), msg=random, digestmod=hashlib.sha256).digest()
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return base64.urlsafe_b64encode(digest).decode('utf-8')[:40]
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def scopes_to_type(self, scopes: List[str]) -> str:
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for scope in scopes:
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if scope.startswith(Scope.write) or scope.startswith(Scope.admin):
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return 'read-write'
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return 'read-only'
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def type_to_scopes(self, user: str, key_type: str) -> List[str]:
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if user in self.admin_users:
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return ADMIN_SCOPES
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if key_type == 'read-write':
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return [Scope.read, Scope.write]
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if key_type == 'read-only':
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return [Scope.read]
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return []
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