-from subprocess import Popen, PIPE
-from os import path
-
-from seqtools import Sequence
-from dispatcher import handler, HandlerError, Handler
-from services.util import Restorable, ConfigWriter
-from services.util import InitdHandler, TransactionalHandler
-
-__ALL__ = ('IpHandler','Error','DeviceError','DeviceNotFoundError','RouteError','RouteNotFoundError',
- 'RouteAlreadyExistsError','AddressError','AddressNotFoundError','AddressAlreadyExistsError')
-
-class Error(HandlerError):
- r"""
- Error(command) -> Error instance :: Base IpHandler exception class.
-
- All exceptions raised by the IpHandler inherits from this one, so you can
- easily catch any IpHandler exception.
-
- message - A descriptive error message.
- """
-
- def __init__(self, message):
- r"Initialize the Error object. See class documentation for more info."
- self.message = message
-
- def __str__(self):
- return self.message
-
-class DeviceError(Error):
-
- def __init__(self, device):
- self.message = 'Device error : "%s"' % device
-
-class DeviceNotFoundError(DeviceError):
-
- def __init__(self, device):
- self.message = 'Device not found : "%s"' % device
-
-class AddressError(Error):
-
- def __init__(self, addr):
- self.message = 'Address error : "%s"' % addr
-
-class AddressNotFoundError(AddressError):
-
- def __init__(self, address):
- self.message = 'Address not found : "%s"' % address
-
-class AddressAlreadyExistsError(AddressError):
-
- def __init__(self, address):
- self.message = 'Address already exists : "%s"' % address
-
-class RouteError(Error):
-
- def __init__(self, route):
- self.message = 'Route error : "%s"' % route
-
-class RouteNotFoundError(RouteError):
-
- def __init__(self, route):
- self.message = 'Route not found : "%s"' % route
-
-class RouteAlreadyExistsError(RouteError):
-
- def __init__(self, route):
- self.message = 'Route already exists : "%s"' % route
-
-class Route(Sequence):
-
- def __init__(self, net_addr, prefix, gateway):
- self.net_addr = net_addr
- self.prefix = prefix
- self.gateway = gateway
-
- def as_tuple(self):
- return(self.addr, self.prefix, self.gateway)
-
- def __cmp__(self, other):
- if self.net_addr == other.net_addr \
- and self.prefix == other.prefix \
- and self.gateway == other.gateway:
- return 0
- return cmp(id(self), id(other))
-
-class RouteHandler(Handler):
-
- def __init__(self, devices):
- self.devices = devices
-
- @handler(u'Adds a route to a device')
- def add(self, device, net_addr, prefix, gateway):
- if not device in self.devices:
- raise DeviceNotFoundError(device)
- r = Route(net_addr, prefix, gateway)
- try:
- self.devices[device].routes.index(r)
- raise RouteAlreadyExistsError(net_addr + '/' + prefix + '->' + gateway)
- except ValueError:
- self.devices[device].routes.append(r)
-
- @handler(u'Deletes a route from a device')
- def delete(self, device, net_addr, prefix, gateway):
- if not device in self.devices:
- raise DeviceNotFoundError(device)
- r = Route(net_addr, prefix, gateway)
- try:
- self.devices[device].routes.remove(r)
- except ValueError:
- raise RouteNotFoundError(net_addr + '/' + prefix + '->' + gateway)
-
- @handler(u'Flushes routes from a device')
- def flush(self, device):
- if not device in self.devices:
- raise DeviceNotFoundError(device)
- self.devices[device].routes = list()
-
-
- @handler(u'List routes')
- def list(self, device):
- try:
- k = self.devices[device].routes.keys()
- except ValueError:
- k = list()
- return k
-
- @handler(u'Get information about all routes')
- def show(self):
- try:
- k = self.devices[device].routes.values()
- except ValueError:
- k = list()
- return k
-
-class Address(Sequence):
-
- def __init__(self, ip, prefix, broadcast):
- self.ip = ip
- self.prefix = prefix
- self.broadcast = broadcast
-
- def as_tuple(self):
- return (self.ip, self.prefix, self.broadcast)
-
-class AddressHandler(Handler):
-
- def __init__(self, devices):
- self.devices = devices
-
- @handler(u'Adds an address to a device')
- def add(self, device, ip, prefix, broadcast='+'):
- if not device in self.devices:
- raise DeviceNotFoundError(device)
- if ip in self.devices[device].addrs:
- raise AddressAlreadyExistsError(ip)
- self.devices[device].addrs[ip] = Address(ip, prefix, broadcast)
-
- @handler(u'Deletes an address from a device')
- def delete(self, device, ip):
- if not device in self.devices:
- raise DeviceNotFoundError(device)
- if not ip in self.devices[device].addrs:
- raise AddressNotFoundError(ip)
- del self.devices[device].addrs[ip]
-
- @handler(u'Flushes addresses from a device')
- def flush(self, device):
- if not device in self.devices:
- raise DeviceNotFoundError(device)
- self.devices[device].addrs = dict()
-
- @handler(u'List all addresses from a device')
- def list(self, device):
- try:
- k = self.devices[device].addrs.keys()
- except ValueError:
- k = list()
- return k
-
- @handler(u'Get information about addresses from a device')
- def show(self, device):
- try:
- k = self.devices[device].addrs.values()
- except ValueError:
- k = list()
- return k
-
-class Device(Sequence):
-
- def __init__(self, name, mac):
- self.name = name
- self.mac = mac
- self.addrs = dict()
- self.routes = list()
-
- def as_tuple(self):
- return (self.name, self.mac)
-
-class DeviceHandler(Handler):
-
- def __init__(self, devices):
- # FIXME remove templates to execute commands
- from mako.template import Template
- self.devices = devices
- template_dir = path.join(path.dirname(__file__), 'templates')
- dev_fn = path.join(template_dir, 'device')
- self.device_template = Template(filename=dev_fn)
-
- @handler(u'Bring the device up')
- def up(self, name):
- if name in self.devices:
- print self.device_template.render(dev=name, action='up')
- else:
- raise DeviceNotFoundError(name)
-
- @handler(u'Bring the device down')
- def down(self, name):
- if name in self.devices:
- print self.device_template.render(dev=name, action='down')
- else:
- raise DeviceNotFoundError(name)
-
- @handler(u'List all devices')
- def list(self):
- return self.devices.keys()
-
- @handler(u'Get information about a device')
- def show(self):
- return self.devices.items()
-
-def get_devices():
- p = Popen(('ip', 'link', 'list'), stdout=PIPE, close_fds=True)
- string = p.stdout.read()
- p.wait()
- d = dict()
- i = string.find('eth')
- while i != -1:
- eth = string[i:i+4]
- m = string.find('link/ether', i+4)
- mac = string[ m+11 : m+11+17]
- d[eth] = Device(eth, mac)
- i = string.find('eth', m+11+17)
- return d
-
-class IpHandler(Restorable, ConfigWriter, TransactionalHandler):
-
- _persistent_vars = 'devices'
-
- _restorable_defaults = dict(devices=get_devices())
-
- _config_writer_files = ('device', 'ip_add', 'ip_del', 'ip_flush',
- 'route_add', 'route_del', 'route_flush')
- _config_writer_tpl_dir = path.join(path.dirname(__file__), 'templates')
-
- def __init__(self, pickle_dir='.', config_dir='.'):
- r"Initialize DhcpHandler object, see class documentation for details."
- self._persistent_dir = pickle_dir
- self._config_writer_cfg_dir = config_dir
- self._config_build_templates()
- self._restore()
- self.addr = AddressHandler(self.devices)
- self.route = RouteHandler(self.devices)
- self.dev = DeviceHandler(self.devices)
-
- def _write_config(self):
- r"_write_config() -> None :: Execute all commands."
- for device in self.devices.values():
- print self._render_config('route_flush', dict(dev=device.name))
- print self._render_config('ip_flush', dict(dev=device.name))
- for address in device.addrs.values():
- print self._render_config('ip_add', dict(
- dev = device.name,
- addr = address.ip,
- prefix = address.prefix,
- broadcast = address.broadcast,
- )
- )
- for route in device.routes:
- print self._render_config('route_add', dict(
- dev = device.name,
- net_addr = route.net_addr,
- prefix = route.prefix,
- gateway = route.gateway,
- )
- )
-
-
-if __name__ == '__main__':
-
- ip = IpHandler()
- print '----------------------'
- ip.dev.up('eth0')
- ip.addr.add('eth0','192.168.0.23','24','192.168.255.255')
- ip.addr.add('eth0','192.168.0.26','24')
- ip.commit()
- ip.route.add('eth0','192.168.0.0','24','192.168.0.1')
- ip.route.add('eth0','192.168.0.5','24','192.168.0.1')
- ip.commit()
- ip.route.flush('eth0')
- ip.commit()
- ip.addr.delete('eth0','192.168.0.23')
- ip.commit()
-
-
projects / software / pymin.git / blobdiff