# vim: set encoding=utf-8 et sw=4 sts=4 :
-# TODO See if it's better (more secure) to execute commands via python instead
-# of using script templates.
-
-from os import path
-from formencode import Invalid
-from formencode.validators import OneOf, CIDR, Int
-import logging ; log = logging.getLogger('pymin.services.firewall')
-
-from pymin.item import Item
-from pymin.validatedclass import Field
-from pymin.dispatcher import Handler, handler, HandlerError
-from pymin.service.util import Restorable, ConfigWriter, ServiceHandler, \
- TransactionalHandler, ListSubHandler
-
-__all__ = ('FirewallHandler', 'get_service')
-
+from formencode import validators as V
+from pymin.config import Option
+from handler import FirewallHandler
+
+def setup_service(options, config):
+ options.add_group('firewall', 'Firewall service', [
+ Option('pickle_dir', V.String, metavar='DIR',
+ help='store persistent data in DIR directory'),
+ Option('config_dir', V.String, metavar='DIR',
+ help='write config file in DIR directory'),
+ ])
def get_service(config):
return FirewallHandler(config.firewall.pickle_dir, config.firewall.config_dir)
-
-class UpOneOf(OneOf):
- def validate_python(self, value, state):
- value = value.upper()
- return OneOf.validate_python(self, value, state)
-
-class Rule(Item):
- r"""Rule(chain, target[, src[, dst[, ...]]]) -> Rule instance.
-
- chain - INPUT, OUTPUT or FORWARD.
- target - ACCEPT, REJECT or DROP.
- src - Source subnet as IP/mask.
- dst - Destination subnet as IP/mask.
- protocol - ICMP, UDP, TCP or ALL.
- src_port - Source port (only for UDP or TCP protocols).
- dst_port - Destination port (only for UDP or TCP protocols).
- """
- chain = Field(UpOneOf(['INPUT', 'OUTPUT', 'FORWARD'], not_empty=True))
- target = Field(UpOneOf(['ACCEPT', 'REJECT', 'DROP'], not_empty=True))
- src = Field(CIDR(if_empty=None, if_missing=None))
- dst = Field(CIDR(if_empty=None, if_missing=None))
- protocol = Field(UpOneOf(['ICMP', 'UDP', 'TCP', 'ALL'], if_missing=None))
- src_port = Field(Int(min=0, max=65535, if_empty=None, if_missing=None))
- dst_port = Field(Int(min=0, max=65535, if_empty=None, if_missing=None))
- def chained_validator(self, fields, state):
- errors = dict()
- if fields['protocol'] not in ('TCP', 'UDP'):
- for name in ('src_port', 'dst_port'):
- if fields[name] is not None:
- errors[name] = u"Should be None if protocol " \
- "(%(protocol)s) is not TCP or UDP" % fields
- if errors:
- raise Invalid(u"You can't specify any ports if the protocol "
- u'is not TCP or UDP', fields, state, error_dict=errors)
-
-class RuleHandler(ListSubHandler):
- r"""RuleHandler(parent) -> RuleHandler instance :: Handle a list of rules.
-
- This class is a helper for FirewallHandler to do all the work related to rules
- administration.
-
- parent - The parent service handler.
- """
-
- handler_help = u"Manage firewall rules"
-
- _cont_subhandler_attr = 'rules'
- _cont_subhandler_class = Rule
-
-class FirewallHandler(Restorable, ConfigWriter, ServiceHandler,
- TransactionalHandler):
- r"""FirewallHandler([pickle_dir[, config_dir]]) -> FirewallHandler instance.
-
- Handles firewall commands using iptables.
-
- pickle_dir - Directory where to write the persistent configuration data.
-
- config_dir - Directory where to store de generated configuration files.
-
- Both defaults to the current working directory.
- """
-
- handler_help = u"Manage firewall service"
-
- _persistent_attrs = ['rules']
-
- _restorable_defaults = dict(rules=list())
-
- _config_writer_files = 'iptables.sh'
- _config_writer_tpl_dir = path.join(path.dirname(__file__), 'templates')
-
- def __init__(self, pickle_dir='.', config_dir='.'):
- r"Initialize the object, see class documentation for details."
- log.debug(u'FirewallHandler(%r, %r)', pickle_dir, config_dir)
- self._persistent_dir = pickle_dir
- self._config_writer_cfg_dir = config_dir
- self._service_start = ('sh', path.join(self._config_writer_cfg_dir,
- self._config_writer_files))
- self._service_stop = ('iptables', '-t', 'filter', '-F')
- self._service_restart = self._service_start
- self._service_reload = self._service_start
- self._config_build_templates()
- ServiceHandler.__init__(self)
- self.rule = RuleHandler(self)
-
- def _get_config_vars(self, config_file):
- return dict(rules=self.rules)
-
-
-if __name__ == '__main__':
-
- logging.basicConfig(
- level = logging.DEBUG,
- format = '%(asctime)s %(levelname)-8s %(message)s',
- datefmt = '%H:%M:%S',
- )
-
- import os
-
- fw_handler = FirewallHandler()
-
- def dump():
- print '-' * 80
- print 'Rules:'
- print fw_handler.rule.show()
- print '-' * 80
-
- dump()
-
- fw_handler.rule.add('input', 'drop', protocol='icmp')
-
- fw_handler.rule.update(0, dst='192.168.0.188/32')
-
- fw_handler.rule.add('output', 'accept', '192.168.1.0/24')
-
- fw_handler.commit()
-
- fw_handler.stop()
-
- dump()
-
- os.system('rm -f *.pkl iptables.sh')
-
projects / software / pymin.git / blobdiff