mirror of https://github.com/evilhero/mylar
152 lines
5.1 KiB
Python
152 lines
5.1 KiB
Python
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#!/usr/bin/env python
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# -*- encoding: UTF-8 -*-
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# This file is part of Mylar.
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#
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# Mylar is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Mylar is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Mylar. If not, see <http://www.gnu.org/licenses/>.
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#
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######
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# Form based authentication for CherryPy. Requires the
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# Session tool to be loaded.
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###### from cherrypy/tools on github
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import cherrypy
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from cherrypy.lib.static import serve_file
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from cgi import escape
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import urllib
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SESSION_KEY = '_cp_username'
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def check_credentials(username, password):
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"""Verifies credentials for username and password.
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Returns None on success or a string describing the error on failure"""
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# Adapt to your needs
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forms_user = cherrypy.request.config['auth.forms_username']
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forms_pass = cherrypy.request.config['auth.forms_password']
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if username == forms_user and password == forms_pass:
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return None
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else:
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return u"Incorrect username or password."
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def check_auth(*args, **kwargs):
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"""A tool that looks in config for 'auth.require'. If found and it
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is not None, a login is required and the entry is evaluated as a list of
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conditions that the user must fulfill"""
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conditions = cherrypy.request.config.get('auth.require', None)
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get_parmas = urllib.quote(cherrypy.request.request_line.split()[1])
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if conditions is not None:
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username = cherrypy.session.get(SESSION_KEY)
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if username:
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cherrypy.request.login = username
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for condition in conditions:
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# A condition is just a callable that returns true or false
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if not condition():
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raise cherrypy.HTTPRedirect("/auth/login")
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else:
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# Send old page as from_page parameter
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raise cherrypy.HTTPRedirect("/auth/login")
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cherrypy.tools.auth = cherrypy.Tool('before_handler', check_auth)
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def require(*conditions):
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"""A decorator that appends conditions to the auth.require config
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variable."""
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def decorate(f):
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if not hasattr(f, '_cp_config'):
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f._cp_config = dict()
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if 'auth.require' not in f._cp_config:
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f._cp_config['auth.require'] = []
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f._cp_config['auth.require'].extend(conditions)
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return f
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return decorate
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# Conditions are callables that return True
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# if the user fulfills the conditions they define, False otherwise
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#
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# They can access the current username as cherrypy.request.login
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#
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# Define those at will however suits the application.
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def member_of(groupname):
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def check():
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# replace with actual check if <username> is in <groupname>
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return cherrypy.request.login == 'joe' and groupname == 'admin'
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return check
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def name_is(reqd_username):
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return lambda: reqd_username == cherrypy.request.login
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# These might be handy
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def any_of(*conditions):
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"""Returns True if any of the conditions match"""
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def check():
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for c in conditions:
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if c():
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return True
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return False
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return check
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# By default all conditions are required, but this might still be
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# needed if you want to use it inside of an any_of(...) condition
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def all_of(*conditions):
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"""Returns True if all of the conditions match"""
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def check():
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for c in conditions:
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if not c():
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return False
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return True
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return check
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# Controller to provide login and logout actions
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class AuthController(object):
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def on_login(self, username):
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"""Called on successful login"""
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# not needed or used for Mylar currently
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def on_logout(self, username):
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"""Called on logout"""
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# not needed or used for Mylar currently
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def get_loginform(self, username, msg="Enter login information"):
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from mylar.webserve import serve_template
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username=escape(username, True)
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return serve_template(templatename="login.html", title="Login")
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@cherrypy.expose
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def login(self, username=None, password=None):
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if username is None or password is None:
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return self.get_loginform("")
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error_msg = check_credentials(username, password)
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if error_msg:
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return self.get_loginform(username, error_msg)
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else:
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cherrypy.session.regenerate()
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cherrypy.session[SESSION_KEY] = cherrypy.request.login = username
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self.on_login(username)
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raise cherrypy.HTTPRedirect("/")
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@cherrypy.expose
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def logout(self):
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sess = cherrypy.session
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username = sess.get(SESSION_KEY, None)
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sess[SESSION_KEY] = None
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if username:
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cherrypy.request.login = None
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self.on_logout(username)
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raise cherrypy.HTTPRedirect("/")
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