pymin/services/proxy/__init__.py

   1 # vim: set encoding=utf-8 et sw=4 sts=4 :
   2
   3 from os import path
   4
   5 from pymin.seqtools import Sequence
   6 from pymin.dispatcher import Handler, handler, HandlerError
   7 from pymin.services.util import Restorable, ConfigWriter, InitdHandler, \
   8                                 TransactionalHandler, ParametersHandler, \
   9                                 DictSubHandler
  10
  11 import crypt
  12
  13 __ALL__ = ('ProxyHandler', 'Error')
  14
  15 class Error(HandlerError):
  16     r"""
  17     Error(command) -> Error instance :: Base DnsHandler exception class.
  18
  19     All exceptions raised by the DnsHandler inherits from this one, so you can
  20     easily catch any DnsHandler exception.
  21
  22     message - A descriptive error message.
  23     """
  24     pass
  25
  26 class Host(Sequence):
  27     def __init__(self,ip):
  28         self.ip = ip
  29     def as_tuple(self):
  30         return (self.ip,)
  31
  32 # TODO convert to a SetSubHandler
  33
  34 class HostHandler(DictSubHandler):
  35
  36     handler_help = u"Manage proxy hosts"
  37
  38     _cont_subhandler_attr = 'hosts'
  39     _cont_subhandler_class = Host
  40
  41 class User(Sequence):
  42     def __init__(self, name, password):
  43         self.name = name
  44         self.password = crypt.crypt(password,'BA')
  45     def as_tuple(self):
  46         return (self.name, self.password)
  47     def update(self, password=None):
  48         if password is not None:
  49             self.password = crypt.crypt(password,'BA')
  50
  51 class UserHandler(DictSubHandler):
  52
  53     handler_help = u"Manage proxy users"
  54
  55     _cont_subhandler_attr = 'users'
  56     _cont_subhandler_class = User
  57
  58 class ProxyHandler(Restorable, ConfigWriter, InitdHandler,
  59                    TransactionalHandler, ParametersHandler):
  60
  61     handler_help = u"Manage proxy service"
  62
  63     _initd_name = 'squid'
  64
  65     _persistent_attrs = ('params', 'hosts', 'users')
  66
  67     _restorable_defaults = dict(
  68             hosts = dict(),
  69             params  = dict(
  70                 ip   = '192.168.0.1',
  71                 port = '8080',
  72             ),
  73             users = dict(),
  74     )
  75
  76     _config_writer_files = ('squid.conf','users.conf')
  77     _config_writer_tpl_dir = path.join(path.dirname(__file__), 'templates')
  78
  79     def __init__(self, pickle_dir='.', config_dir='.'):
  80         r"Initialize DhcpHandler object, see class documentation for details."
  81         self._persistent_dir = pickle_dir
  82         self._config_writer_cfg_dir = config_dir
  83         self._config_build_templates()
  84         self._restore()
  85         self.host = HostHandler(self)
  86         self.user = UserHandler(self)
  87
  88     def _get_config_vars(self, config_file):
  89         if config_file == 'squid.conf':
  90             return dict(hosts=self.hosts.values(), **self.params)
  91         return dict(users=self.users)
  92
  93
  94 if __name__ == '__main__':
  95
  96     px = ProxyHandler()
  97     px.set('ip','192.66.66.66')
  98     px.set('port','666')
  99     px.host.add('192.168.0.25.25')
 100     px.host.add('192.168.0.25.26')
 101     px.host.add('192.168.0.25.27')
 102     px.host.delete('192.168.0.25.27')
 103     px.user.add('lala','soronga')
 104     px.user.add('culo','sarasa')
 105     px.commit()