diff options
Diffstat (limited to 'services/nm/nminfo.py')
| -rw-r--r-- | services/nm/nminfo.py | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/services/nm/nminfo.py b/services/nm/nminfo.py new file mode 100644 index 0000000..746ed7f --- /dev/null +++ b/services/nm/nminfo.py @@ -0,0 +1,346 @@ +# vi: ts=4 ai noet +# +# Copyright (C) 2006, Red Hat, Inc. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + +import dbus +import dbus.service +import time +import os +import binascii +from ConfigParser import ConfigParser +try: + from sugar import env +except ImportError: + pass + +NM_INFO_IFACE='org.freedesktop.NetworkManagerInfo' +NM_INFO_PATH='/org/freedesktop/NetworkManagerInfo' + + +class NoNetworks(dbus.DBusException): + def __init__(self): + dbus.DBusException.__init__(self) + self._dbus_error_name = NM_INFO_IFACE + '.NoNetworks' + + +class NetworkInvalidError(Exception): + pass + + +class NMConfig(ConfigParser): + def get_bool(self, section, name): + opt = self.get(section, name) + if type(opt) == type(""): + if opt.lower() == 'yes' or opt.lower() == 'true': + return True + elif opt.lower() == 'no' or opt.lower() == 'false': + return False + raise ValueError("Invalid format for %s/%s. Should be one of [yes, no, true, false]." % (section, name)) + + def get_list(self, section, name): + opt = self.get(section, name) + if type(opt) == type(""): + if not len(opt): + return [] + try: + return opt.split() + except Exception: + pass + raise ValueError("Invalid format for %s/%s. Should be a space-separate list." % (section, name)) + + def get_int(self, section, name): + opt = self.get(section, name) + try: + return int(opt) + except Exception: + pass + raise ValueError("Invalid format for %s/%s. Should be a valid integer." % (section, name)) + + +IW_AUTH_CIPHER_NONE = 0x00000001 +IW_AUTH_CIPHER_WEP40 = 0x00000002 +IW_AUTH_CIPHER_TKIP = 0x00000004 +IW_AUTH_CIPHER_CCMP = 0x00000008 +IW_AUTH_CIPHER_WEP104 = 0x00000010 + +IW_AUTH_ALG_OPEN_SYSTEM = 0x00000001 +IW_AUTH_ALG_SHARED_KEY = 0x00000002 + +NETWORK_TYPE_UNKNOWN = 0 +NETWORK_TYPE_ALLOWED = 1 +NETWORK_TYPE_INVALID = 2 + + +class Security(object): + def __init__(self, we_cipher): + self._we_cipher = we_cipher + + def read_from_config(self, cfg, name): + pass + + def read_from_args(self, args): + pass + + def new_from_config(cfg, name): + security = None + try: + we_cipher = cfg.get_int(name, "we_cipher") + if we_cipher == IW_AUTH_CIPHER_NONE: + security = Security(we_cipher) + elif we_cipher == IW_AUTH_CIPHER_WEP40 or we_cipher == IW_AUTH_CIPHER_WEP104: + security = WEPSecurity(we_cipher) + else: + # FIXME: find a way to make WPA config option matrix not + # make you want to throw up + raise ValueError("Unsupported security combo") + security.read_from_config(cfg, name) + except (NoOptionError, ValueError), e: + return None + return security + new_from_config = staticmethod(new_from_config) + + def new_from_args(cfg, we_cipher, args): + security = None + try: + if we_cipher == IW_AUTH_CIPHER_NONE: + security = Security(we_cipher) + elif we_cipher == IW_AUTH_CIPHER_WEP40 or we_cipher == IW_AUTH_CIPHER_WEP104: + security = WEPSecurity(we_cipher) + else: + # FIXME: find a way to make WPA config option matrix not + # make you want to throw up + raise ValueError("Unsupported security combo") + security.read_from_args(args) + except (NoOptionError, ValueError), e: + del security + return None + return security + new_from_args = staticmethod(new_from_args) + + def get_properties(self): + return [self._we_cipher] + + def write_to_config(self, section, config): + config.set(section, "we_cipher", self._we_cipher) + + +class WEPSecurity(Security): + def read_from_args(self, *args): + if len(args) != 2: + raise ValueError("not enough arguments") + if not isinstance(args[0], str): + raise ValueError("wrong argument type for key") + if not isinstance(args[1], int): + raise ValueError("wrong argument type for auth_alg") + self._key = args[0] + self._auth_alg = args[1] + + def read_from_config(self, cfg, name): + # Key should be a hex encoded string + self._key = cfg.get(name, "key") + if self._we_cipher == IW_AUTH_CIPHER_WEP40 and len(self._key) != 10: + raise ValueError("Key length not right for 40-bit WEP") + if self._we_cipher == IW_AUTH_CIPHER_WEP104 and len(self._key) != 26: + raise ValueError("Key length not right for 104-bit WEP") + + try: + a = binascii.a2b_hex(self._key) + except TypeError: + raise ValueError("Key was not a hexadecimal string.") + + self._auth_alg = cfg.get_int(name, "auth_alg") + if self._auth_alg != IW_AUTH_ALG_OPEN_SYSTEM and self._auth_alg != IW_AUTH_ALG_SHARED_KEY: + raise ValueError("Invalid authentication algorithm %d" % self._auth_alg) + + def get_properties(self): + args = Security.get_properties(self) + args.append(self._key) + args.append(self._auth_alg) + return args + + def write_to_config(self, section, config): + Security.write_to_config(self, section, config) + config.set(section, "key", self._key) + config.set(section, "auth_alg", self._auth_alg) + + +class Network: + def __init__(ssid): + self.ssid = ssid + self.timestamp = time.now() + self.fallback = False + self.bssids = [] + self.we_cipher = 0 + self._security = None + + def get_properties(self): + args = [network.ssid, network.timestamp, network.fallback, network.bssids] + args += self._security.get_properties() + return tuple(args) + + def read_from_args(self, auto, fallback, bssid, we_cipher, *args): + if auto == False: + self.timestamp = time.now() + self.fallback = True + if not self.bssids.contains(bssid): + self.bssids.append(bssid) + + self._security = Security.new_from_args(we_cipher, args) + if not self._security: + raise NetworkInvalidError(e) + + def read_from_config(self, config): + try: + self.timestamp = config.get_int(self.ssid, "timestamp") + self.fallback = config.get_bool(self.ssid, "fallback") + except (NoOptionError, ValueError), e: + raise NetworkInvalidError(e) + + self._security = Security.new_from_config(config, self.ssid) + if not self._security: + raise NetworkInvalidError(e) + + # The following don't need to be present + try: + self.bssids = config.get_list(self.ssid, "bssids") + except (NoOptionError, ValueError), e: + pass + + def write_to_config(self, config): + config.add_section(self.ssid) + config.set(self.ssid, "timestamp", self.timestamp) + config.set(self.ssid, "fallback", self.fallback) + if len(self.bssids) > 0: + opt = "" + opt.join(self.bssids, " ") + config.set(self.ssid, "bssids", opt) + self._security.write_to_config(self.ssid, config) + + +class NMInfoDBusServiceHelper(dbus.service.Object): + def __init__(self, parent): + self._parent = parent + bus = dbus.SystemBus() + + # If NMI is already around, don't grab the NMI service + bus_object = bus.get_object('org.freedesktop.DBus', '/org/freedesktop/DBus') + name = None + try: + name = bus_object.GetNameOwner("org.freedesktop.NetworkManagerInfo", \ + dbus_interface='org.freedesktop.DBus') + except dbus.DBusException: + pass + if name: + print "NMI service already owned by %s, won't claim it." % name + raise RuntimeError + + bus_name = dbus.service.BusName(NM_INFO_IFACE, bus=bus) + dbus.service.Object.__init__(self, bus_name, NM_INFO_PATH) + + @dbus.service.method(NM_INFO_IFACE, in_signature='i', out_signature='as') + def getNetworks(self, net_type): + ssids = self._parent.get_networks(net_type) + if len(ssids) > 0: + return dbus.Array(ssids) + + raise NoNetworks + + @dbus.service.method(NM_INFO_IFACE, in_signature='si', out_signature='sibbas') + def getNetworkProperties(self, ssid, net_type): + props = self._parent.get_network_properties(ssid, net_type) + if not props: + raise NoNetworks + return props + + @dbus.service.method(NM_INFO_IFACE) + def updateNetworkInfo(self, ssid, bauto, bfallback, bssid, cipher, *args): + self._parent.update_network_info(ssid, bauto, bfallback, bssid, cipher, args) + + +class NMInfo(object): + def __init__(self): + try: + profile_path = env.get_profile_path() + except NameError: + home = os.path.expanduser("~") + profile_path = os.path.join(home, ".sugar", "default") + self._cfg_file = os.path.join(profile_path, "nm", "networks.cfg") + self._allowed_networks = self._read_config() + self._dbus_helper = NMInfoDBusServiceHelper(self) + + def save_config(self): + self._write_config(self._allowed_networks) + + def _read_config(self): + if not os.path.exists(os.path.dirname(self._cfg_file)): + os.makedirs(os.path.dirname(self._cfg_file), 0755) + if not os.path.exists(self._cfg_file): + self._write_config({}) + return {} + + config = NMConfig() + config.read(self._cfg_file) + networks = {} + for name in config.sections(): + net = Network(name) + try: + net.read_from_config(config) + networks[name] = net + except NetworkInvalidError, e: + print "Bad network!! %s" % e + del net + del config + return networks + + def _write_config(self, networks): + fp = open(self._cfg_file, 'w') + config = NMConfig() + for net in networks: + net.write_to_config(config) + config.write(fp) + fp.close() + del config + + def get_networks(self, net_type): + if net_type != NETWORK_TYPE_ALLOWED: + raise ValueError("Bad network type") + nets = [] + for net in self._allowed_networks: + nets.append(net.ssid) + print "Returning networks: %s" % nets + return nets + + def get_network_properties(self, ssid, net_type): + if net_type != NETWORK_TYPE_ALLOWED: + raise ValueError("Bad network type") + if not self._allowed_networks.has_key(ssid): + return None + network = self._allowed_networks[ssid] + props = network.get_properties() + print "Returning props for %s: %s" % (ssid, props) + return props + + def update_network_info(self, ssid, bauto, bfallback, bssid, we_cipher, *args): + if self._allowed_networks.has_key(ssid): + del self._allowed_networks[ssid] + net = Network(ssid) + try: + net.read_from_args(auto, fallback, bssid, we_cipher, args) + self._allowed_networks[ssid] = net + except InvalidNetworkError, e: + print "Bad network!! %s" % e + del net |