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Diffstat (limited to 'src/hardware/nminfo.py')
| -rw-r--r-- | src/hardware/nminfo.py | 525 |
1 files changed, 525 insertions, 0 deletions
diff --git a/src/hardware/nminfo.py b/src/hardware/nminfo.py new file mode 100644 index 0000000..3a93120 --- /dev/null +++ b/src/hardware/nminfo.py @@ -0,0 +1,525 @@ +# vi: ts=4 ai noet +# +# Copyright (C) 2006-2007 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 +import ConfigParser +import logging + +import nmclient +import keydialog +import gtk +from sugar import env + +IW_AUTH_KEY_MGMT_802_1X = 0x1 +IW_AUTH_KEY_MGMT_PSK = 0x2 + +IW_AUTH_WPA_VERSION_DISABLED = 0x00000001 +IW_AUTH_WPA_VERSION_WPA = 0x00000002 +IW_AUTH_WPA_VERSION_WPA2 = 0x00000004 + +NM_AUTH_TYPE_WPA_PSK_AUTO = 0x00000000 +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 + +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 CanceledKeyRequestError(dbus.DBusException): + def __init__(self): + dbus.DBusException.__init__(self) + self._dbus_error_name = NM_INFO_IFACE + '.CanceledError' + + +class NetworkInvalidError(Exception): + pass + + +class NMConfig(ConfigParser.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)) + + def get_float(self, section, name): + opt = self.get(section, name) + try: + return float(opt) + except Exception: + pass + raise ValueError("Invalid format for %s/%s. Should be a valid float." % (section, name)) + + +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 + 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) + elif we_cipher == NM_AUTH_TYPE_WPA_PSK_AUTO or we_cipher == IW_AUTH_CIPHER_CCMP or we_cipher == IW_AUTH_CIPHER_TKIP: + security = WPASecurity(we_cipher) + else: + raise ValueError("Unsupported security combo") + security.read_from_config(cfg, name) + return security + new_from_config = staticmethod(new_from_config) + + def new_from_args(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) + elif we_cipher == NM_AUTH_TYPE_WPA_PSK_AUTO or we_cipher == IW_AUTH_CIPHER_CCMP or we_cipher == IW_AUTH_CIPHER_TKIP: + security = WPASecurity(we_cipher) + else: + raise ValueError("Unsupported security combo") + security.read_from_args(args) + except ValueError, e: + logging.debug("Error reading security information: %s" % e) + del security + return None + return security + new_from_args = staticmethod(new_from_args) + + def get_properties(self): + return [dbus.Int32(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") + key = args[0] + auth_alg = args[1] + if isinstance(key, unicode): + key = key.encode() + if not isinstance(key, str): + raise ValueError("wrong argument type for key") + if not isinstance(auth_alg, int): + raise ValueError("wrong argument type for auth_alg") + self._key = key + self._auth_alg = auth_alg + + 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(dbus.String(self._key)) + args.append(dbus.Int32(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 WPASecurity(Security): + def read_from_args(self, args): + if len(args) != 3: + raise ValueError("not enough arguments") + key = args[0] + if isinstance(key, unicode): + key = key.encode() + if not isinstance(key, str): + raise ValueError("wrong argument type for key") + + wpa_ver = args[1] + if not isinstance(wpa_ver, int): + raise ValueError("wrong argument type for WPA version") + + key_mgmt = args[2] + if not isinstance(key_mgmt, int): + raise ValueError("wrong argument type for WPA key management") + if not key_mgmt & IW_AUTH_KEY_MGMT_PSK: + raise ValueError("Key management types other than PSK are not supported") + + self._key = key + self._wpa_ver = wpa_ver + self._key_mgmt = key_mgmt + + def read_from_config(self, cfg, name): + # Key should be a hex encoded string + self._key = cfg.get(name, "key") + if len(self._key) != 64: + raise ValueError("Key length not right for WPA-PSK") + + try: + a = binascii.a2b_hex(self._key) + except TypeError: + raise ValueError("Key was not a hexadecimal string.") + + self._wpa_ver = cfg.get_int(name, "wpa_ver") + if self._wpa_ver != IW_AUTH_WPA_VERSION_WPA and self._wpa_ver != IW_AUTH_WPA_VERSION_WPA2: + raise ValueError("Invalid WPA version %d" % self._wpa_ver) + + self._key_mgmt = cfg.get_int(name, "key_mgmt") + if not self._key_mgmt & IW_AUTH_KEY_MGMT_PSK: + raise ValueError("Invalid WPA key management option %d" % self._key_mgmt) + + def get_properties(self): + args = Security.get_properties(self) + args.append(dbus.String(self._key)) + args.append(dbus.Int32(self._wpa_ver)) + args.append(dbus.Int32(self._key_mgmt)) + 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, "wpa_ver", self._wpa_ver) + config.set(section, "key_mgmt", self._key_mgmt) + + +class Network: + def __init__(self, ssid): + self.ssid = ssid + self.timestamp = int(time.time()) + self.bssids = [] + self.we_cipher = 0 + self._security = None + + def get_properties(self): + bssid_list = dbus.Array([], signature="s") + for item in self.bssids: + bssid_list.append(dbus.String(item)) + args = [dbus.String(self.ssid), dbus.Int32(self.timestamp), dbus.Boolean(True), bssid_list] + args += self._security.get_properties() + return tuple(args) + + def get_security(self): + return self._security.get_properties() + + def set_security(self, security): + self._security = security + + def read_from_args(self, auto, bssid, we_cipher, args): + if auto == False: + self.timestamp = int(time.time()) + if not bssid in self.bssids: + self.bssids.append(bssid) + + self._security = Security.new_from_args(we_cipher, args) + if not self._security: + raise NetworkInvalidError("Invalid security information") + + def read_from_config(self, config): + try: + self.timestamp = config.get_int(self.ssid, "timestamp") + except (ConfigParser.NoOptionError, ValueError), e: + raise NetworkInvalidError(e) + + try: + self._security = Security.new_from_config(config, self.ssid) + except Exception, e: + raise NetworkInvalidError(e) + + # The following don't need to be present + try: + self.bssids = config.get_list(self.ssid, "bssids") + except (ConfigParser.NoOptionError, ValueError), e: + pass + + def write_to_config(self, config): + try: + config.add_section(self.ssid) + config.set(self.ssid, "timestamp", self.timestamp) + if len(self.bssids) > 0: + opt = " " + opt.join(self.bssids) + config.set(self.ssid, "bssids", opt) + self._security.write_to_config(self.ssid, config) + except Exception, e: + logging.debug("Error writing '%s': %s" % (self.ssid, e)) + + +class NotFoundError(dbus.DBusException): + pass +class UnsupportedError(dbus.DBusException): + pass + +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: + logging.debug("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', async_callbacks=('async_cb', 'async_err_cb')) + def getNetworkProperties(self, ssid, net_type, async_cb, async_err_cb): + self._parent.get_network_properties(ssid, net_type, async_cb, async_err_cb) + + @dbus.service.method(NM_INFO_IFACE) + def updateNetworkInfo(self, ssid, bauto, bssid, cipher, *args): + self._parent.update_network_info(ssid, bauto, bssid, cipher, args) + + @dbus.service.method(NM_INFO_IFACE, async_callbacks=('async_cb', 'async_err_cb')) + def getKeyForNetwork(self, dev_path, net_path, ssid, attempt, new_key, async_cb, async_err_cb): + self._parent.get_key_for_network(dev_path, net_path, ssid, + attempt, new_key, async_cb, async_err_cb) + + @dbus.service.method(NM_INFO_IFACE) + def cancelGetKeyForNetwork(self): + self._parent.cancel_get_key_for_network() + +class NMInfo(object): + def __init__(self, client): + profile_path = env.get_profile_path() + self._cfg_file = os.path.join(profile_path, "nm", "networks.cfg") + self._nmclient = client + self._allowed_networks = self._read_config() + self._dbus_helper = NMInfoDBusServiceHelper(self) + self._key_dialog = None + + 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(): + try: + net = Network(name) + net.read_from_config(config) + networks[name] = net + except Exception, e: + logging.error("Error when processing config for the network %s: %r" % (name, e)) + + del config + return networks + + def _write_config(self, networks): + fp = open(self._cfg_file, 'w') + config = NMConfig() + for net in networks.values(): + 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.values(): + nets.append(net.ssid) + logging.debug("Returning networks: %s" % nets) + return nets + + def get_network_properties(self, ssid, net_type, async_cb, async_err_cb): + if not isinstance(ssid, unicode): + async_err_cb(ValueError("Invalid arguments; ssid must be unicode.")) + if net_type != NETWORK_TYPE_ALLOWED: + async_err_cb(ValueError("Bad network type")) + if not self._allowed_networks.has_key(ssid): + async_err_cb(NotFoundError("Network '%s' not found." % ssid)) + network = self._allowed_networks[ssid] + props = network.get_properties() + + # DBus workaround: the normal method return handler wraps + # the returned arguments in a tuple and then converts that to a + # struct, but NetworkManager expects a plain list of arguments. + # It turns out that the async callback method return code _doesn't_ + # wrap the returned arguments in a tuple, so as a workaround use + # the async callback stuff here even though we're not doing it + # asynchronously. + async_cb(*props) + + def update_network_info(self, ssid, auto, bssid, we_cipher, args): + if not isinstance(ssid, unicode): + raise ValueError("Invalid arguments; ssid must be unicode.") + if self._allowed_networks.has_key(ssid): + del self._allowed_networks[ssid] + net = Network(ssid) + try: + net.read_from_args(auto, bssid, we_cipher, args) + logging.debug("Updated network information for '%s'." % ssid) + self._allowed_networks[ssid] = net + self.save_config() + except NetworkInvalidError, e: + logging.debug("Error updating network information: %s" % e) + del net + + def get_key_for_network(self, dev_op, net_op, ssid, attempt, new_key, async_cb, async_err_cb): + if not isinstance(ssid, unicode): + raise ValueError("Invalid arguments; ssid must be unicode.") + if self._allowed_networks.has_key(ssid) and not new_key: + # We've got the info already + net = self._allowed_networks[ssid] + async_cb(tuple(net.get_security())) + return + + # Otherwise, ask the user for it + net = None + dev = self._nmclient.get_device(dev_op) + if not dev: + async_err_cb(NotFoundError("Device was unknown.")) + return + + if dev.get_type() == nmclient.DEVICE_TYPE_802_3_ETHERNET: + # We don't support wired 802.1x yet... + async_err_cb(UnsupportedError("Device type is unsupported by NMI.")) + return + + net = dev.get_network(net_op) + if not net: + async_err_cb(NotFoundError("Network was unknown.")) + return + + self._key_dialog = keydialog.new_key_dialog(net, async_cb, async_err_cb) + self._key_dialog.connect("response", self._key_dialog_response_cb) + self._key_dialog.connect("destroy", self._key_dialog_destroy_cb) + self._key_dialog.show_all() + + def _key_dialog_destroy_cb(self, widget, foo=None): + if widget != self._key_dialog: + return + self._key_dialog_response_cb(widget, gtk.RESPONSE_CANCEL) + + def _key_dialog_response_cb(self, widget, response_id): + if widget != self._key_dialog: + return + + (async_cb, async_err_cb) = self._key_dialog.get_callbacks() + net = self._key_dialog.get_network() + security = None + if response_id == gtk.RESPONSE_OK: + security = self._key_dialog.create_security() + self._key_dialog = None + widget.destroy() + + if response_id in [gtk.RESPONSE_CANCEL, gtk.RESPONSE_NONE]: + # key dialog dialog was canceled; send the error back to NM + async_err_cb(CanceledKeyRequestError()) + elif response_id == gtk.RESPONSE_OK: + if not security: + raise RuntimeError("Invalid security arguments.") + props = security.get_properties() + a = tuple(props) + async_cb(*a) + else: + raise RuntimeError("Unhandled key dialog response %d" % response_id) + + def cancel_get_key_for_network(self): + # Close the wireless key dialog and just have it return + # with the 'canceled' argument set to true + if not self._key_dialog: + return + self._key_dialog_destroy_cb(self._key_dialog) + |