X-Git-Url: https://git.llucax.com/software/pymin.git/blobdiff_plain/d6dfd46ed31d985e364b9ea9a404c394f15c2348..b53a45e7e79b31d0b6b44df0405366cc8a2fd016:/services/ip/__init__.py diff --git a/services/ip/__init__.py b/services/ip/__init__.py index cf16088..8ce72f7 100644 --- a/services/ip/__init__.py +++ b/services/ip/__init__.py @@ -1,308 +1,17 @@ # vim: set encoding=utf-8 et sw=4 sts=4 : -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() - - - +from formencode import validators as V +from pymin.config import Option +from handler import IpHandler + +def setup_service(options, config): + options.add_group('ip', 'IP network interfaces', [ + Option('pickle_dir', V.String, metavar='DIR', + help='store persistent data in DIR directory'), + Option('config_dir', V.String, metavar='DIR', + help='write config files in DIR directory'), + ]) + +def get_service(config): + return IpHandler(config.ip.pickle_dir, config.ip.config_dir)