/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */ /* * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301 USA. * * Copyright 2007 - 2008 Novell, Inc. * Copyright 2007 - 2015 Red Hat, Inc. */ #include "nm-default.h" #include "nm-vpn-service-plugin.h" #include #include #include #include "nm-enum-types.h" #include "nm-utils.h" #include "nm-connection.h" #include "nm-dbus-helpers.h" #include "nm-core-internal.h" #include "nm-simple-connection.h" #include "introspection/org.freedesktop.NetworkManager.VPN.Plugin.h" #define NM_VPN_SERVICE_PLUGIN_QUIT_TIMER 180 static void nm_vpn_service_plugin_initable_iface_init (GInitableIface *iface); G_DEFINE_ABSTRACT_TYPE_WITH_CODE (NMVpnServicePlugin, nm_vpn_service_plugin, G_TYPE_OBJECT, G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE, nm_vpn_service_plugin_initable_iface_init); ) typedef struct { NMVpnServiceState state; /* DBUS-y stuff */ GDBusConnection *connection; NMDBusVpnPlugin *dbus_vpn_service_plugin; char *dbus_service_name; gboolean dbus_watch_peer; /* Temporary stuff */ guint connect_timer; guint quit_timer; guint fail_stop_id; guint peer_watch_id; gboolean interactive; gboolean got_config; gboolean has_ip4, got_ip4; gboolean has_ip6, got_ip6; /* Config stuff copied from config to ip4config */ GVariant *banner, *tundev, *gateway, *mtu; } NMVpnServicePluginPrivate; #define NM_VPN_SERVICE_PLUGIN_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NM_TYPE_VPN_SERVICE_PLUGIN, NMVpnServicePluginPrivate)) enum { STATE_CHANGED, CONFIG, IP4_CONFIG, IP6_CONFIG, LOGIN_BANNER, FAILURE, QUIT, SECRETS_REQUIRED, LAST_SIGNAL }; static guint signals[LAST_SIGNAL] = { 0 }; enum { PROP_0, PROP_DBUS_SERVICE_NAME, PROP_DBUS_WATCH_PEER, PROP_STATE, LAST_PROP }; static GSList *active_plugins = NULL; static void nm_vpn_service_plugin_set_connection (NMVpnServicePlugin *plugin, GDBusConnection *connection) { NMVpnServicePluginPrivate *priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin); g_clear_object (&priv->connection); if (connection) priv->connection = g_object_ref (connection); } /** * nm_vpn_service_plugin_get_connection: * * Returns: (transfer full): * * Since: 1.2 */ GDBusConnection * nm_vpn_service_plugin_get_connection (NMVpnServicePlugin *plugin) { GDBusConnection *connection; g_return_val_if_fail (NM_IS_VPN_SERVICE_PLUGIN (plugin), NULL); connection = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin)->connection; if (connection) g_object_ref (connection); return connection; } static NMVpnServiceState nm_vpn_service_plugin_get_state (NMVpnServicePlugin *plugin) { g_return_val_if_fail (NM_IS_VPN_SERVICE_PLUGIN (plugin), NM_VPN_SERVICE_STATE_UNKNOWN); return NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin)->state; } static void nm_vpn_service_plugin_set_state (NMVpnServicePlugin *plugin, NMVpnServiceState state) { NMVpnServicePluginPrivate *priv; g_return_if_fail (NM_IS_VPN_SERVICE_PLUGIN (plugin)); priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin); if (priv->state != state) { priv->state = state; g_signal_emit (plugin, signals[STATE_CHANGED], 0, state); nmdbus_vpn_plugin_emit_state_changed (priv->dbus_vpn_service_plugin, state); } } void nm_vpn_service_plugin_set_login_banner (NMVpnServicePlugin *plugin, const char *banner) { NMVpnServicePluginPrivate *priv; g_return_if_fail (NM_IS_VPN_SERVICE_PLUGIN (plugin)); g_return_if_fail (banner != NULL); priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin); g_signal_emit (plugin, signals[LOGIN_BANNER], 0, banner); nmdbus_vpn_plugin_emit_login_banner (priv->dbus_vpn_service_plugin, banner); } static void _emit_failure (NMVpnServicePlugin *plugin, NMVpnPluginFailure reason) { NMVpnServicePluginPrivate *priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin); g_signal_emit (plugin, signals[FAILURE], 0, reason); nmdbus_vpn_plugin_emit_failure (priv->dbus_vpn_service_plugin, reason); } void nm_vpn_service_plugin_failure (NMVpnServicePlugin *plugin, NMVpnPluginFailure reason) { g_return_if_fail (NM_IS_VPN_SERVICE_PLUGIN (plugin)); _emit_failure (plugin, reason); nm_vpn_service_plugin_disconnect (plugin, NULL); } gboolean nm_vpn_service_plugin_disconnect (NMVpnServicePlugin *plugin, GError **err) { NMVpnServicePluginPrivate *priv; gboolean ret = FALSE; NMVpnServiceState state; g_return_val_if_fail (NM_IS_VPN_SERVICE_PLUGIN (plugin), FALSE); priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin); state = nm_vpn_service_plugin_get_state (plugin); switch (state) { case NM_VPN_SERVICE_STATE_STOPPING: g_set_error (err, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_STOPPING_IN_PROGRESS, "%s", "Could not process the request because the VPN connection is already being stopped."); break; case NM_VPN_SERVICE_STATE_STOPPED: g_set_error (err, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_ALREADY_STOPPED, "%s", "Could not process the request because no VPN connection was active."); break; case NM_VPN_SERVICE_STATE_STARTING: _emit_failure (plugin, NM_VPN_PLUGIN_FAILURE_CONNECT_FAILED); /* fall through */ case NM_VPN_SERVICE_STATE_STARTED: nm_vpn_service_plugin_set_state (plugin, NM_VPN_SERVICE_STATE_STOPPING); ret = NM_VPN_SERVICE_PLUGIN_GET_CLASS (plugin)->disconnect (plugin, err); nm_vpn_service_plugin_set_state (plugin, NM_VPN_SERVICE_STATE_STOPPED); break; case NM_VPN_SERVICE_STATE_INIT: ret = TRUE; nm_vpn_service_plugin_set_state (plugin, NM_VPN_SERVICE_STATE_STOPPED); break; default: g_warning ("Unhandled VPN service state %d", state); g_assert_not_reached (); break; } return ret; } static void nm_vpn_service_plugin_emit_quit (NMVpnServicePlugin *plugin) { g_signal_emit (plugin, signals[QUIT], 0); } static gboolean connect_timer_expired (gpointer data) { NMVpnServicePlugin *plugin = NM_VPN_SERVICE_PLUGIN (data); GError *err = NULL; NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin)->connect_timer = 0; g_message ("Connect timer expired, disconnecting."); nm_vpn_service_plugin_disconnect (plugin, &err); if (err) { g_warning ("Disconnect failed: %s", err->message); g_error_free (err); } return G_SOURCE_REMOVE; } static gboolean quit_timer_expired (gpointer data) { NMVpnServicePlugin *self = NM_VPN_SERVICE_PLUGIN (data); NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (self)->quit_timer = 0; nm_vpn_service_plugin_emit_quit (self); return G_SOURCE_REMOVE; } static void schedule_quit_timer (NMVpnServicePlugin *self) { NMVpnServicePluginPrivate *priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (self); nm_clear_g_source (&priv->quit_timer); priv->quit_timer = g_timeout_add_seconds (NM_VPN_SERVICE_PLUGIN_QUIT_TIMER, quit_timer_expired, self); } static gboolean fail_stop (gpointer data) { NMVpnServicePlugin *self = NM_VPN_SERVICE_PLUGIN (data); NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (self)->fail_stop_id = 0; nm_vpn_service_plugin_set_state (self, NM_VPN_SERVICE_STATE_STOPPED); return G_SOURCE_REMOVE; } static void schedule_fail_stop (NMVpnServicePlugin *plugin, guint timeout_secs) { NMVpnServicePluginPrivate *priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin); nm_clear_g_source (&priv->fail_stop_id); if (timeout_secs) priv->fail_stop_id = g_timeout_add_seconds (timeout_secs, fail_stop, plugin); else priv->fail_stop_id = g_idle_add (fail_stop, plugin); } void nm_vpn_service_plugin_set_config (NMVpnServicePlugin *plugin, GVariant *config) { NMVpnServicePluginPrivate *priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin); g_return_if_fail (NM_IS_VPN_SERVICE_PLUGIN (plugin)); g_return_if_fail (config != NULL); priv->got_config = TRUE; (void) g_variant_lookup (config, NM_VPN_PLUGIN_CONFIG_HAS_IP4, "b", &priv->has_ip4); (void) g_variant_lookup (config, NM_VPN_PLUGIN_CONFIG_HAS_IP6, "b", &priv->has_ip6); /* Record the items that need to also be inserted into the * ip4config, for compatibility with older daemons. */ if (priv->banner) g_variant_unref (priv->banner); priv->banner = g_variant_lookup_value (config, NM_VPN_PLUGIN_CONFIG_BANNER, G_VARIANT_TYPE ("s")); if (priv->tundev) g_variant_unref (priv->tundev); priv->tundev = g_variant_lookup_value (config, NM_VPN_PLUGIN_CONFIG_TUNDEV, G_VARIANT_TYPE ("s")); if (priv->gateway) g_variant_unref (priv->gateway); priv->gateway = g_variant_lookup_value (config, NM_VPN_PLUGIN_CONFIG_EXT_GATEWAY, G_VARIANT_TYPE ("u")); if (priv->mtu) g_variant_unref (priv->mtu); priv->mtu = g_variant_lookup_value (config, NM_VPN_PLUGIN_CONFIG_MTU, G_VARIANT_TYPE ("u")); g_signal_emit (plugin, signals[CONFIG], 0, config); nmdbus_vpn_plugin_emit_config (priv->dbus_vpn_service_plugin, config); } void nm_vpn_service_plugin_set_ip4_config (NMVpnServicePlugin *plugin, GVariant *ip4_config) { NMVpnServicePluginPrivate *priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin); GVariant *combined_config; GVariantBuilder builder; GVariantIter iter; const char *key; GVariant *value; g_return_if_fail (NM_IS_VPN_SERVICE_PLUGIN (plugin)); g_return_if_fail (ip4_config != NULL); priv->got_ip4 = TRUE; /* Old plugins won't send the "config" signal and thus can't send * NM_VPN_SERVICE_PLUGIN_CONFIG_HAS_IP4 either. But since they don't support IPv6, * we can safely assume that, if we don't receive a "config" signal but do * receive an "ip4-config" signal, the old plugin supports IPv4. */ if (!priv->got_config) priv->has_ip4 = TRUE; /* Older NetworkManager daemons expect all config info to be in * the ip4 config, so they won't even notice the "config" signal * being emitted. So just copy all of that data into the ip4 * config too. */ g_variant_builder_init (&builder, G_VARIANT_TYPE ("a{sv}")); g_variant_iter_init (&iter, ip4_config); while (g_variant_iter_next (&iter, "{&sv}", &key, &value)) { g_variant_builder_add (&builder, "{sv}", key, value); g_variant_unref (value); } if (priv->banner) g_variant_builder_add (&builder, "{sv}", NM_VPN_PLUGIN_IP4_CONFIG_BANNER, priv->banner); if (priv->tundev) g_variant_builder_add (&builder, "{sv}", NM_VPN_PLUGIN_IP4_CONFIG_TUNDEV, priv->tundev); if (priv->gateway) g_variant_builder_add (&builder, "{sv}", NM_VPN_PLUGIN_IP4_CONFIG_EXT_GATEWAY, priv->gateway); if (priv->mtu) g_variant_builder_add (&builder, "{sv}", NM_VPN_PLUGIN_IP4_CONFIG_MTU, priv->mtu); combined_config = g_variant_builder_end (&builder); g_variant_ref_sink (combined_config); g_signal_emit (plugin, signals[IP4_CONFIG], 0, combined_config); nmdbus_vpn_plugin_emit_ip4_config (priv->dbus_vpn_service_plugin, combined_config); g_variant_unref (combined_config); if ( priv->has_ip4 == priv->got_ip4 && priv->has_ip6 == priv->got_ip6) nm_vpn_service_plugin_set_state (plugin, NM_VPN_SERVICE_STATE_STARTED); } void nm_vpn_service_plugin_set_ip6_config (NMVpnServicePlugin *plugin, GVariant *ip6_config) { NMVpnServicePluginPrivate *priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin); g_return_if_fail (NM_IS_VPN_SERVICE_PLUGIN (plugin)); g_return_if_fail (ip6_config != NULL); g_variant_ref_sink (ip6_config); priv->got_ip6 = TRUE; g_signal_emit (plugin, signals[IP6_CONFIG], 0, ip6_config); nmdbus_vpn_plugin_emit_ip6_config (priv->dbus_vpn_service_plugin, ip6_config); g_variant_unref (ip6_config); if ( priv->has_ip4 == priv->got_ip4 && priv->has_ip6 == priv->got_ip6) nm_vpn_service_plugin_set_state (plugin, NM_VPN_SERVICE_STATE_STARTED); } static void connect_timer_start (NMVpnServicePlugin *plugin) { NMVpnServicePluginPrivate *priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin); nm_clear_g_source (&priv->connect_timer); priv->connect_timer = g_timeout_add_seconds (60, connect_timer_expired, plugin); } static void peer_vanished (GDBusConnection *connection, const gchar *sender_name, const gchar *object_path, const gchar *interface_name, const gchar *signal_name, GVariant *parameters, gpointer user_data) { nm_vpn_service_plugin_disconnect (NM_VPN_SERVICE_PLUGIN (user_data), NULL); } static guint watch_peer (NMVpnServicePlugin *plugin, GDBusMethodInvocation *context) { GDBusConnection *connection = g_dbus_method_invocation_get_connection (context); const gchar *peer = g_dbus_message_get_sender (g_dbus_method_invocation_get_message (context)); return g_dbus_connection_signal_subscribe (connection, "org.freedesktop.DBus", "org.freedesktop.DBus", "NameOwnerChanged", "/org/freedesktop/DBus", peer, G_DBUS_SIGNAL_FLAGS_NONE, peer_vanished, plugin, NULL); } static void _connect_generic (NMVpnServicePlugin *plugin, GDBusMethodInvocation *context, GVariant *properties, GVariant *details) { NMVpnServicePluginPrivate *priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin); NMVpnServicePluginClass *vpn_class = NM_VPN_SERVICE_PLUGIN_GET_CLASS (plugin); NMConnection *connection; gboolean success = FALSE; GError *error = NULL; guint fail_stop_timeout = 0; if (priv->state != NM_VPN_SERVICE_STATE_STOPPED && priv->state != NM_VPN_SERVICE_STATE_INIT) { g_dbus_method_invocation_return_error (context, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_WRONG_STATE, "Could not start connection: wrong plugin state %d", priv->state); return; } connection = _nm_simple_connection_new_from_dbus (properties, NM_SETTING_PARSE_FLAGS_BEST_EFFORT, &error); if (!connection) { g_dbus_method_invocation_return_error (context, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS, "Invalid connection: %s", error->message); g_clear_error (&error); return; } priv->interactive = FALSE; if (details && !vpn_class->connect_interactive) { g_dbus_method_invocation_return_error (context, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_INTERACTIVE_NOT_SUPPORTED, "Plugin does not implement ConnectInteractive()"); return; } nm_clear_g_source (&priv->fail_stop_id); if (priv->dbus_watch_peer) priv->peer_watch_id = watch_peer (plugin, context); if (details) { priv->interactive = TRUE; success = vpn_class->connect_interactive (plugin, connection, details, &error); if (g_error_matches (error, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_INTERACTIVE_NOT_SUPPORTED)) { /* Give NetworkManager a bit of time to fall back to Connect() */ fail_stop_timeout = 5; } } else success = vpn_class->connect (plugin, connection, &error); if (success) { nm_vpn_service_plugin_set_state (plugin, NM_VPN_SERVICE_STATE_STARTING); g_dbus_method_invocation_return_value (context, NULL); /* Add a timer to make sure we do not wait indefinitely for the successful connect. */ connect_timer_start (plugin); } else { g_dbus_method_invocation_take_error (context, error); /* Stop the plugin from an idle handler so that the Connect * method return gets sent before the STOP StateChanged signal. */ schedule_fail_stop (plugin, fail_stop_timeout); } g_object_unref (connection); } static void impl_vpn_service_plugin_connect (NMVpnServicePlugin *plugin, GDBusMethodInvocation *context, GVariant *connection, gpointer user_data) { _connect_generic (plugin, context, connection, NULL); } static void impl_vpn_service_plugin_connect_interactive (NMVpnServicePlugin *plugin, GDBusMethodInvocation *context, GVariant *connection, GVariant *details, gpointer user_data) { _connect_generic (plugin, context, connection, details); } /*****************************************************************************/ static void impl_vpn_service_plugin_need_secrets (NMVpnServicePlugin *plugin, GDBusMethodInvocation *context, GVariant *properties, gpointer user_data) { NMConnection *connection; const char *setting_name; gboolean needed; GError *error = NULL; connection = _nm_simple_connection_new_from_dbus (properties, NM_SETTING_PARSE_FLAGS_BEST_EFFORT, &error); if (!connection) { g_dbus_method_invocation_return_error (context, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_INVALID_CONNECTION, "The connection was invalid: %s", error->message); g_error_free (error); return; } if (!NM_VPN_SERVICE_PLUGIN_GET_CLASS (plugin)->need_secrets) { g_dbus_method_invocation_return_value (context, g_variant_new ("(s)", "")); return; } needed = NM_VPN_SERVICE_PLUGIN_GET_CLASS (plugin)->need_secrets (plugin, connection, &setting_name, &error); if (error) { g_dbus_method_invocation_take_error (context, error); return; } if (needed) { /* Push back the quit timer so the VPN plugin doesn't quit in the * middle of asking the user for secrets. */ schedule_quit_timer (plugin); g_assert (setting_name); g_dbus_method_invocation_return_value (context, g_variant_new ("(s)", setting_name)); } else { /* No secrets required */ g_dbus_method_invocation_return_value (context, g_variant_new ("(s)", "")); } } static void impl_vpn_service_plugin_new_secrets (NMVpnServicePlugin *plugin, GDBusMethodInvocation *context, GVariant *properties, gpointer user_data) { NMVpnServicePluginPrivate *priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin); NMConnection *connection; GError *error = NULL; gboolean success; if (priv->state != NM_VPN_SERVICE_STATE_STARTING) { g_dbus_method_invocation_return_error (context, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_WRONG_STATE, "Could not accept new secrets: wrong plugin state %d", priv->state); return; } connection = _nm_simple_connection_new_from_dbus (properties, NM_SETTING_PARSE_FLAGS_BEST_EFFORT, &error); if (!connection) { g_dbus_method_invocation_return_error (context, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS, "Invalid connection: %s", error->message); g_clear_error (&error); return; } if (!NM_VPN_SERVICE_PLUGIN_GET_CLASS (plugin)->new_secrets) { g_dbus_method_invocation_return_error (context, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_INTERACTIVE_NOT_SUPPORTED, "Could not accept new secrets: plugin cannot process interactive secrets"); g_object_unref (connection); return; } success = NM_VPN_SERVICE_PLUGIN_GET_CLASS (plugin)->new_secrets (plugin, connection, &error); if (success) { g_dbus_method_invocation_return_value (context, NULL); /* Add a timer to make sure we do not wait indefinitely for the successful connect. */ connect_timer_start (plugin); } else { g_dbus_method_invocation_take_error (context, error); /* Stop the plugin from and idle handler so that the NewSecrets * method return gets sent before the STOP StateChanged signal. */ schedule_fail_stop (plugin, 0); } g_object_unref (connection); } /** * nm_vpn_service_plugin_secrets_required: * @plugin: the #NMVpnServicePlugin * @message: an information message about why secrets are required, if any * @hints: VPN specific secret names for required new secrets * * Called by VPN plugin implementations to signal to NetworkManager that secrets * are required during the connection process. This signal may be used to * request new secrets when the secrets originally provided by NetworkManager * are insufficient, or the VPN process indicates that it needs additional * information to complete the request. * * Since: 1.2 */ void nm_vpn_service_plugin_secrets_required (NMVpnServicePlugin *plugin, const char *message, const char **hints) { NMVpnServicePluginPrivate *priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin); /* Plugin must be able to accept the new secrets if it calls this method */ g_return_if_fail (NM_VPN_SERVICE_PLUGIN_GET_CLASS (plugin)->new_secrets); /* Plugin cannot call this method if NetworkManager didn't originally call * ConnectInteractive(). */ g_return_if_fail (priv->interactive == TRUE); /* Cancel the connect timer since secrets might take a while. It'll * get restarted when the secrets come back via NewSecrets(). */ nm_clear_g_source (&priv->connect_timer); g_signal_emit (plugin, signals[SECRETS_REQUIRED], 0, message, hints); nmdbus_vpn_plugin_emit_secrets_required (priv->dbus_vpn_service_plugin, message, hints); } /*****************************************************************************/ #define DATA_KEY_TAG "DATA_KEY=" #define DATA_VAL_TAG "DATA_VAL=" #define SECRET_KEY_TAG "SECRET_KEY=" #define SECRET_VAL_TAG "SECRET_VAL=" static void free_secret (gpointer data) { char *secret = data; memset (secret, 0, strlen (secret)); g_free (secret); } /** * nm_vpn_service_plugin_read_vpn_details: * @fd: file descriptor to read from, usually stdin (0) * @out_data: (out) (transfer full): on successful return, a hash table * (mapping char*:char*) containing the key/value pairs of VPN data items * @out_secrets: (out) (transfer full): on successful return, a hash table * (mapping char*:char*) containing the key/value pairsof VPN secrets * * Parses key/value pairs from a file descriptor (normally stdin) passed by * an applet when the applet calls the authentication dialog of the VPN plugin. * * Returns: %TRUE if reading values was successful, %FALSE if not * * Since: 1.2 **/ gboolean nm_vpn_service_plugin_read_vpn_details (int fd, GHashTable **out_data, GHashTable **out_secrets) { GHashTable *data, *secrets; gboolean success = FALSE; char *key = NULL, *val = NULL; GString *line; gchar c; if (out_data) g_return_val_if_fail (*out_data == NULL, FALSE); if (out_secrets) g_return_val_if_fail (*out_secrets == NULL, FALSE); data = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free); secrets = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, free_secret); line = g_string_new (NULL); /* Read stdin for data and secret items until we get a DONE */ while (1) { ssize_t nr; GHashTable *hash = NULL; errno = 0; nr = read (fd, &c, 1); if (nr == -1) { if (errno == EAGAIN) { g_usleep (100); continue; } break; } if (c != '\n') { g_string_append_c (line, c); continue; } /* Check for the finish marker */ if (strcmp (line->str, "DONE") == 0) break; /* Otherwise it's a data/secret item */ if (strncmp (line->str, DATA_KEY_TAG, strlen (DATA_KEY_TAG)) == 0) { hash = data; key = g_strdup (line->str + strlen (DATA_KEY_TAG)); } else if (strncmp (line->str, DATA_VAL_TAG, strlen (DATA_VAL_TAG)) == 0) { hash = data; val = g_strdup (line->str + strlen (DATA_VAL_TAG)); } else if (strncmp (line->str, SECRET_KEY_TAG, strlen (SECRET_KEY_TAG)) == 0) { hash = secrets; key = g_strdup (line->str + strlen (SECRET_KEY_TAG)); } else if (strncmp (line->str, SECRET_VAL_TAG, strlen (SECRET_VAL_TAG)) == 0) { hash = secrets; val = g_strdup (line->str + strlen (SECRET_VAL_TAG)); } g_string_truncate (line, 0); if (key && val && hash) { g_hash_table_insert (hash, key, val); key = NULL; val = NULL; success = TRUE; /* Got at least one value */ } } if (success) { if (out_data) *out_data = data; else g_hash_table_destroy (data); if (out_secrets) *out_secrets = secrets; else g_hash_table_destroy (secrets); } else { g_hash_table_destroy (data); g_hash_table_destroy (secrets); } g_string_free (line, TRUE); return success; } /** * nm_vpn_service_plugin_get_secret_flags: * @data: hash table containing VPN key/value pair data items * @secret_name: VPN secret key name for which to retrieve flags for * @out_flags: (out): on success, the flags associated with @secret_name * * Given a VPN secret key name, attempts to find the corresponding flags data * item in @data. If found, converts the flags data item to * #NMSettingSecretFlags and returns it. * * Returns: %TRUE if the flag data item was found and successfully converted * to flags, %FALSE if not * * Since: 1.2 **/ gboolean nm_vpn_service_plugin_get_secret_flags (GHashTable *data, const char *secret_name, NMSettingSecretFlags *out_flags) { char *flag_name; const char *val; unsigned long tmp; gboolean success = FALSE; g_return_val_if_fail (data != NULL, FALSE); g_return_val_if_fail (secret_name != NULL, FALSE); g_return_val_if_fail (out_flags != NULL, FALSE); g_return_val_if_fail (*out_flags == NM_SETTING_SECRET_FLAG_NONE, FALSE); flag_name = g_strdup_printf ("%s-flags", secret_name); /* Try new flags value first */ val = g_hash_table_lookup (data, flag_name); if (val) { errno = 0; tmp = strtoul (val, NULL, 10); if (errno == 0 && tmp <= NM_SETTING_SECRET_FLAGS_ALL) { *out_flags = (NMSettingSecretFlags) tmp; success = TRUE; } } g_free (flag_name); return success; } /*****************************************************************************/ static void impl_vpn_service_plugin_disconnect (NMVpnServicePlugin *plugin, GDBusMethodInvocation *context, gpointer user_data) { GError *error = NULL; if (nm_vpn_service_plugin_disconnect (plugin, &error)) g_dbus_method_invocation_return_value (context, NULL); else g_dbus_method_invocation_take_error (context, error); } static void impl_vpn_service_plugin_set_config (NMVpnServicePlugin *plugin, GDBusMethodInvocation *context, GVariant *config, gpointer user_data) { nm_vpn_service_plugin_set_config (plugin, config); g_dbus_method_invocation_return_value (context, NULL); } static void impl_vpn_service_plugin_set_ip4_config (NMVpnServicePlugin *plugin, GDBusMethodInvocation *context, GVariant *config, gpointer user_data) { nm_vpn_service_plugin_set_ip4_config (plugin, config); g_dbus_method_invocation_return_value (context, NULL); } static void impl_vpn_service_plugin_set_ip6_config (NMVpnServicePlugin *plugin, GDBusMethodInvocation *context, GVariant *config, gpointer user_data) { nm_vpn_service_plugin_set_ip6_config (plugin, config); g_dbus_method_invocation_return_value (context, NULL); } static void impl_vpn_service_plugin_set_failure (NMVpnServicePlugin *plugin, GDBusMethodInvocation *context, char *reason, gpointer user_data) { nm_vpn_service_plugin_failure (plugin, NM_VPN_PLUGIN_FAILURE_BAD_IP_CONFIG); g_dbus_method_invocation_return_value (context, NULL); } /*****************************************************************************/ static void sigterm_handler (int signum) { g_slist_foreach (active_plugins, (GFunc) nm_vpn_service_plugin_emit_quit, NULL); } static void setup_unix_signal_handler (void) { struct sigaction action; sigset_t block_mask; action.sa_handler = sigterm_handler; sigemptyset (&block_mask); action.sa_mask = block_mask; action.sa_flags = 0; sigaction (SIGINT, &action, NULL); sigaction (SIGTERM, &action, NULL); } /*****************************************************************************/ static void one_plugin_destroyed (gpointer data, GObject *object) { active_plugins = g_slist_remove (active_plugins, object); } static void nm_vpn_service_plugin_init (NMVpnServicePlugin *plugin) { active_plugins = g_slist_append (active_plugins, plugin); g_object_weak_ref (G_OBJECT (plugin), one_plugin_destroyed, NULL); } static gboolean init_sync (GInitable *initable, GCancellable *cancellable, GError **error) { NMVpnServicePlugin *plugin = NM_VPN_SERVICE_PLUGIN (initable); NMVpnServicePluginPrivate *priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin); GDBusConnection *connection = NULL; GDBusProxy *proxy; GVariant *ret; gboolean success = FALSE; if (!priv->dbus_service_name) { g_set_error_literal (error, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS, _("No service name specified")); return FALSE; } connection = g_bus_get_sync (G_BUS_TYPE_SYSTEM, NULL, error); if (!connection) return FALSE; proxy = g_dbus_proxy_new_sync (connection, G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES | G_DBUS_PROXY_FLAGS_DO_NOT_CONNECT_SIGNALS, NULL, DBUS_SERVICE_DBUS, DBUS_PATH_DBUS, DBUS_INTERFACE_DBUS, cancellable, error); if (!proxy) goto out; priv->dbus_vpn_service_plugin = nmdbus_vpn_plugin_skeleton_new (); if (!g_dbus_interface_skeleton_export (G_DBUS_INTERFACE_SKELETON (priv->dbus_vpn_service_plugin), connection, NM_VPN_DBUS_PLUGIN_PATH, error)) goto out; _nm_dbus_bind_properties (plugin, priv->dbus_vpn_service_plugin); _nm_dbus_bind_methods (plugin, priv->dbus_vpn_service_plugin, "Connect", impl_vpn_service_plugin_connect, "ConnectInteractive", impl_vpn_service_plugin_connect_interactive, "NeedSecrets", impl_vpn_service_plugin_need_secrets, "NewSecrets", impl_vpn_service_plugin_new_secrets, "Disconnect", impl_vpn_service_plugin_disconnect, "SetConfig", impl_vpn_service_plugin_set_config, "SetIp4Config", impl_vpn_service_plugin_set_ip4_config, "SetIp6Config", impl_vpn_service_plugin_set_ip6_config, "SetFailure", impl_vpn_service_plugin_set_failure, NULL); nm_vpn_service_plugin_set_connection (plugin, connection); nm_vpn_service_plugin_set_state (plugin, NM_VPN_SERVICE_STATE_INIT); ret = g_dbus_proxy_call_sync (proxy, "RequestName", g_variant_new ("(su)", priv->dbus_service_name, 0), G_DBUS_CALL_FLAGS_NONE, -1, cancellable, error); g_object_unref (proxy); if (!ret) { if (error && *error) g_dbus_error_strip_remote_error (*error); goto out; } g_variant_unref (ret); success = TRUE; out: g_clear_object (&connection); return success; } static void set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { NMVpnServicePluginPrivate *priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (object); switch (prop_id) { case PROP_DBUS_SERVICE_NAME: /* construct-only */ priv->dbus_service_name = g_value_dup_string (value); break; case PROP_DBUS_WATCH_PEER: /* construct-only */ priv->dbus_watch_peer = g_value_get_boolean (value); break; case PROP_STATE: nm_vpn_service_plugin_set_state (NM_VPN_SERVICE_PLUGIN (object), (NMVpnServiceState) g_value_get_enum (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { NMVpnServicePluginPrivate *priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (object); switch (prop_id) { case PROP_DBUS_SERVICE_NAME: g_value_set_string (value, priv->dbus_service_name); break; case PROP_DBUS_WATCH_PEER: g_value_set_boolean (value, priv->dbus_watch_peer); break; case PROP_STATE: g_value_set_enum (value, nm_vpn_service_plugin_get_state (NM_VPN_SERVICE_PLUGIN (object))); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void dispose (GObject *object) { NMVpnServicePlugin *plugin = NM_VPN_SERVICE_PLUGIN (object); NMVpnServicePluginPrivate *priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin); NMVpnServiceState state; GError *err = NULL; nm_clear_g_source (&priv->fail_stop_id); nm_clear_g_source (&priv->quit_timer); nm_clear_g_source (&priv->connect_timer); state = nm_vpn_service_plugin_get_state (plugin); if (state == NM_VPN_SERVICE_STATE_STARTED || state == NM_VPN_SERVICE_STATE_STARTING) nm_vpn_service_plugin_disconnect (plugin, &err); if (err) { g_warning ("Error disconnecting VPN connection: %s", err->message); g_error_free (err); } G_OBJECT_CLASS (nm_vpn_service_plugin_parent_class)->dispose (object); } static void finalize (GObject *object) { NMVpnServicePlugin *plugin = NM_VPN_SERVICE_PLUGIN (object); NMVpnServicePluginPrivate *priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin); nm_vpn_service_plugin_set_connection (plugin, NULL); g_free (priv->dbus_service_name); g_clear_pointer (&priv->banner, g_variant_unref); g_clear_pointer (&priv->tundev, g_variant_unref); g_clear_pointer (&priv->gateway, g_variant_unref); g_clear_pointer (&priv->mtu, g_variant_unref); G_OBJECT_CLASS (nm_vpn_service_plugin_parent_class)->finalize (object); } static void state_changed (NMVpnServicePlugin *plugin, NMVpnServiceState state) { NMVpnServicePluginPrivate *priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE (plugin); switch (state) { case NM_VPN_SERVICE_STATE_STARTING: nm_clear_g_source (&priv->quit_timer); nm_clear_g_source (&priv->fail_stop_id); break; case NM_VPN_SERVICE_STATE_STOPPED: if (priv->dbus_watch_peer) nm_vpn_service_plugin_emit_quit (plugin); else schedule_quit_timer (plugin); if (priv->peer_watch_id) { g_dbus_connection_signal_unsubscribe (nm_vpn_service_plugin_get_connection (plugin), priv->peer_watch_id); priv->peer_watch_id = 0; } break; default: /* Clean up all timers we might have set up. */ nm_clear_g_source (&priv->connect_timer); nm_clear_g_source (&priv->quit_timer); nm_clear_g_source (&priv->fail_stop_id); break; } } static void nm_vpn_service_plugin_class_init (NMVpnServicePluginClass *plugin_class) { GObjectClass *object_class = G_OBJECT_CLASS (plugin_class); g_type_class_add_private (object_class, sizeof (NMVpnServicePluginPrivate)); /* virtual methods */ object_class->set_property = set_property; object_class->get_property = get_property; object_class->dispose = dispose; object_class->finalize = finalize; plugin_class->state_changed = state_changed; /* properties */ /** * NMVpnServicePlugin:service-name: * * The D-Bus service name of this plugin. * * Since: 1.2 */ g_object_class_install_property (object_class, PROP_DBUS_SERVICE_NAME, g_param_spec_string (NM_VPN_SERVICE_PLUGIN_DBUS_SERVICE_NAME, "", "", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS)); /** * NMVpnServicePlugin:watch-peer: * * Whether to watch for D-Bus peer's changes. * * Since: 1.2 */ g_object_class_install_property (object_class, PROP_DBUS_WATCH_PEER, g_param_spec_boolean (NM_VPN_SERVICE_PLUGIN_DBUS_WATCH_PEER, "", "", FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); /** * NMVpnServicePlugin:state: * * The state of the plugin. * * Since: 1.2 */ g_object_class_install_property (object_class, PROP_STATE, g_param_spec_enum (NM_VPN_SERVICE_PLUGIN_STATE, "", "", NM_TYPE_VPN_SERVICE_STATE, NM_VPN_SERVICE_STATE_INIT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); /* signals */ signals[STATE_CHANGED] = g_signal_new ("state-changed", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (NMVpnServicePluginClass, state_changed), NULL, NULL, NULL, G_TYPE_NONE, 1, G_TYPE_UINT); signals[SECRETS_REQUIRED] = g_signal_new ("secrets-required", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_FIRST, 0, NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_STRING, G_TYPE_STRV); signals[CONFIG] = g_signal_new ("config", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (NMVpnServicePluginClass, config), NULL, NULL, NULL, G_TYPE_NONE, 1, G_TYPE_VARIANT); signals[IP4_CONFIG] = g_signal_new ("ip4-config", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (NMVpnServicePluginClass, ip4_config), NULL, NULL, NULL, G_TYPE_NONE, 1, G_TYPE_VARIANT); signals[IP6_CONFIG] = g_signal_new ("ip6-config", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (NMVpnServicePluginClass, ip6_config), NULL, NULL, NULL, G_TYPE_NONE, 1, G_TYPE_VARIANT); signals[LOGIN_BANNER] = g_signal_new ("login-banner", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (NMVpnServicePluginClass, login_banner), NULL, NULL, NULL, G_TYPE_NONE, 1, G_TYPE_STRING); signals[FAILURE] = g_signal_new ("failure", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (NMVpnServicePluginClass, failure), NULL, NULL, NULL, G_TYPE_NONE, 1, G_TYPE_UINT); signals[QUIT] = g_signal_new ("quit", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (NMVpnServicePluginClass, quit), NULL, NULL, NULL, G_TYPE_NONE, 0, G_TYPE_NONE); setup_unix_signal_handler (); } static void nm_vpn_service_plugin_initable_iface_init (GInitableIface *iface) { iface->init = init_sync; } /*****************************************************************************/ /* this header is intended to be copied to users of nm_vpn_editor_plugin_call(), * to simplify invocation of generic functions. Include it here, to complile * the code. */ #include "nm-utils/nm-vpn-editor-plugin-call.h"