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98 lines
3.1 KiB
98 lines
3.1 KiB
import cherrypy
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from cherrypy.lib import httpauth
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def check_auth(users, encrypt=None, realm=None):
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"""If an authorization header contains credentials, return True or False.
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"""
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request = cherrypy.serving.request
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if 'authorization' in request.headers:
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# make sure the provided credentials are correctly set
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ah = httpauth.parseAuthorization(request.headers['authorization'])
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if ah is None:
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raise cherrypy.HTTPError(400, 'Bad Request')
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if not encrypt:
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encrypt = httpauth.DIGEST_AUTH_ENCODERS[httpauth.MD5]
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if hasattr(users, '__call__'):
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try:
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# backward compatibility
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users = users() # expect it to return a dictionary
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if not isinstance(users, dict):
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raise ValueError(
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"Authentication users must be a dictionary")
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# fetch the user password
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password = users.get(ah["username"], None)
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except TypeError:
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# returns a password (encrypted or clear text)
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password = users(ah["username"])
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else:
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if not isinstance(users, dict):
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raise ValueError("Authentication users must be a dictionary")
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# fetch the user password
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password = users.get(ah["username"], None)
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# validate the authorization by re-computing it here
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# and compare it with what the user-agent provided
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if httpauth.checkResponse(ah, password, method=request.method,
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encrypt=encrypt, realm=realm):
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request.login = ah["username"]
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return True
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request.login = False
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return False
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def basic_auth(realm, users, encrypt=None, debug=False):
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"""If auth fails, raise 401 with a basic authentication header.
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realm
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A string containing the authentication realm.
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users
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A dict of the form: {username: password} or a callable returning
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a dict.
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encrypt
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callable used to encrypt the password returned from the user-agent.
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if None it defaults to a md5 encryption.
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"""
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if check_auth(users, encrypt):
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if debug:
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cherrypy.log('Auth successful', 'TOOLS.BASIC_AUTH')
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return
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# inform the user-agent this path is protected
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cherrypy.serving.response.headers[
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'www-authenticate'] = httpauth.basicAuth(realm)
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raise cherrypy.HTTPError(
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401, "You are not authorized to access that resource")
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def digest_auth(realm, users, debug=False):
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"""If auth fails, raise 401 with a digest authentication header.
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realm
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A string containing the authentication realm.
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users
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A dict of the form: {username: password} or a callable returning
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a dict.
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"""
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if check_auth(users, realm=realm):
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if debug:
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cherrypy.log('Auth successful', 'TOOLS.DIGEST_AUTH')
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return
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# inform the user-agent this path is protected
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cherrypy.serving.response.headers[
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'www-authenticate'] = httpauth.digestAuth(realm)
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raise cherrypy.HTTPError(
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401, "You are not authorized to access that resource")
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