/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2007 - 2008 Novell, Inc.
* Copyright (C) 2007 - 2015 Red Hat, Inc.
*/
#include "nm-default.h"
#include "nm-vpn-service-plugin.h"
#include <signal.h>
#include <stdlib.h>
#include "nm-glib-aux/nm-secret-utils.h"
#include "nm-glib-aux/nm-dbus-aux.h"
#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};
NM_GOBJECT_PROPERTIES_DEFINE_BASE(PROP_DBUS_SERVICE_NAME, PROP_DBUS_WATCH_PEER, PROP_STATE, );
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);
if (priv->dbus_vpn_service_plugin)
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);
if (priv->dbus_vpn_service_plugin)
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);
if (priv->dbus_vpn_service_plugin)
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)
{
gboolean ret = FALSE;
NMVpnServiceState state;
g_return_val_if_fail(NM_IS_VPN_SERVICE_PLUGIN(plugin), FALSE);
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);
}
/**
* nm_vpn_service_plugin_shutdown:
* @plugin: the #NMVpnServicePlugin instance
*
* Shutdown the @plugin and disconnect from D-Bus. After this,
* the plugin instance is dead and should no longer be used.
* It ensures to get no more requests from D-Bus. In principle,
* you don't need to shutdown the plugin, disposing the instance
* has the same effect. However, this gives a way to deactivate
* the plugin before giving up the last reference.
*
* Since: 1.12
*/
void
nm_vpn_service_plugin_shutdown(NMVpnServicePlugin *plugin)
{
NMVpnServicePluginPrivate *priv;
NMVpnServiceState state;
GError * error = NULL;
g_return_if_fail(NM_IS_VPN_SERVICE_PLUGIN(plugin));
priv = NM_VPN_SERVICE_PLUGIN_GET_PRIVATE(plugin);
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, &error);
if (error) {
g_warning("Error disconnecting VPN connection: %s", error->message);
g_error_free(error);
}
}
if (priv->dbus_vpn_service_plugin) {
g_dbus_interface_skeleton_unexport(
G_DBUS_INTERFACE_SKELETON(priv->dbus_vpn_service_plugin));
g_clear_object(&priv->dbus_vpn_service_plugin);
}
}
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);
if (priv->dbus_vpn_service_plugin)
nmdbus_vpn_plugin_emit_config(priv->dbus_vpn_service_plugin, 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_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);
if (priv->dbus_vpn_service_plugin)
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);
if (priv->dbus_vpn_service_plugin)
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 char * sender_name,
const char * object_path,
const char * interface_name,
const char * 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 char *peer = g_dbus_message_get_sender(g_dbus_method_invocation_get_message(context));
return nm_dbus_connection_signal_subscribe_name_owner_changed(connection,
peer,
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);
if (priv->dbus_vpn_service_plugin)
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="
/**
* 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)
{
gs_unref_hashtable GHashTable *data = NULL;
gs_unref_hashtable GHashTable *secrets = NULL;
gboolean success = FALSE;
GHashTable * hash = NULL;
GString * key = NULL, *val = NULL;
nm_auto_free_gstring GString *line = NULL;
char c;
GString *str = NULL;
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(nm_str_hash, g_str_equal, g_free, g_free);
secrets =
g_hash_table_new_full(nm_str_hash, g_str_equal, g_free, (GDestroyNotify) nm_free_secret);
line = g_string_new(NULL);
/* Read stdin for data and secret items until we get a DONE */
while (1) {
ssize_t nr;
nr = read(fd, &c, 1);
if (nr < 0) {
if (errno == EAGAIN) {
g_usleep(100);
continue;
}
break;
}
if (nr > 0 && c != '\n') {
g_string_append_c(line, c);
continue;
}
if (str && *line->str == '=') {
/* continuation */
g_string_append_c(str, '\n');
g_string_append(str, line->str + 1);
} else if (key && val) {
/* done a line */
g_return_val_if_fail(hash, FALSE);
g_hash_table_insert(hash, g_string_free(key, FALSE), g_string_free(val, FALSE));
key = NULL;
val = NULL;
hash = NULL;
success = TRUE; /* Got at least one value */
}
if (strcmp(line->str, "DONE") == 0) {
/* finish marker */
break;
} else if (strncmp(line->str, DATA_KEY_TAG, strlen(DATA_KEY_TAG)) == 0) {
if (key != NULL) {
g_warning("a value expected");
g_string_free(key, TRUE);
}
key = g_string_new(line->str + strlen(DATA_KEY_TAG));
str = key;
hash = data;
} else if (strncmp(line->str, DATA_VAL_TAG, strlen(DATA_VAL_TAG)) == 0) {
if (val != NULL)
g_string_free(val, TRUE);
if (val || !key || hash != data) {
g_warning("%s not preceded by %s", DATA_VAL_TAG, DATA_KEY_TAG);
break;
}
val = g_string_new(line->str + strlen(DATA_VAL_TAG));
str = val;
} else if (strncmp(line->str, SECRET_KEY_TAG, strlen(SECRET_KEY_TAG)) == 0) {
if (key != NULL) {
g_warning("a value expected");
g_string_free(key, TRUE);
}
key = g_string_new(line->str + strlen(SECRET_KEY_TAG));
str = key;
hash = secrets;
} else if (strncmp(line->str, SECRET_VAL_TAG, strlen(SECRET_VAL_TAG)) == 0) {
if (val != NULL)
g_string_free(val, TRUE);
if (val || !key || hash != secrets) {
g_warning("%s not preceded by %s", SECRET_VAL_TAG, SECRET_KEY_TAG);
break;
}
val = g_string_new(line->str + strlen(SECRET_VAL_TAG));
str = val;
}
g_string_truncate(line, 0);
if (nr == 0)
break;
}
if (success) {
NM_SET_OUT(out_data, g_steal_pointer(&data));
NM_SET_OUT(out_secrets, g_steal_pointer(&secrets));
}
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)
{
gs_free char * flag_name_free = NULL;
const char * s;
gint64 t1;
NMSettingSecretFlags t0;
g_return_val_if_fail(data, FALSE);
g_return_val_if_fail(out_flags && *out_flags == NM_SETTING_SECRET_FLAG_NONE, FALSE);
if (!secret_name || !*secret_name)
g_return_val_if_reached(FALSE);
s = g_hash_table_lookup(data, nm_construct_name_a("%s-flags", secret_name, &flag_name_free));
if (!s)
return FALSE;
t1 = _nm_utils_ascii_str_to_int64(s, 10, 0, G_MAXINT64, -1);
if (t1 == -1)
return FALSE;
t0 = (NMSettingSecretFlags) t1;
if ((gint64) t0 != t1)
return FALSE;
NM_SET_OUT(out_flags, t0);
return TRUE;
}
/*****************************************************************************/
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
_emit_quit(gpointer data, gpointer user_data)
{
NMVpnServicePlugin *plugin = data;
nm_vpn_service_plugin_emit_quit(plugin);
}
static void
sigterm_handler(int signum)
{
g_slist_foreach(active_plugins, _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);
gs_unref_object GDBusConnection *connection = NULL;
gs_unref_object GDBusProxy *proxy = NULL;
GVariant * ret;
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)
return FALSE;
priv->dbus_vpn_service_plugin = nmdbus_vpn_plugin_skeleton_new();
_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);
if (!g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(priv->dbus_vpn_service_plugin),
connection,
NM_VPN_DBUS_PLUGIN_PATH,
error))
return FALSE;
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);
if (!ret) {
if (error && *error)
g_dbus_error_strip_remote_error(*error);
return FALSE;
}
g_variant_unref(ret);
return TRUE;
}
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)
{
nm_vpn_service_plugin_shutdown(NM_VPN_SERVICE_PLUGIN(object));
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);
nm_clear_pointer(&priv->banner, g_variant_unref);
nm_clear_pointer(&priv->tundev, g_variant_unref);
nm_clear_pointer(&priv->gateway, g_variant_unref);
nm_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);
nm_clear_g_dbus_connection_signal(nm_vpn_service_plugin_get_connection(plugin),
&priv->peer_watch_id);
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));
object_class->get_property = get_property;
object_class->set_property = set_property;
object_class->dispose = dispose;
object_class->finalize = finalize;
plugin_class->state_changed = state_changed;
/**
* NMVpnServicePlugin:service-name:
*
* The D-Bus service name of this plugin.
*
* Since: 1.2
*/
obj_properties[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
*/
obj_properties[PROP_DBUS_WATCH_PEER] =
g_param_spec_boolean(NM_VPN_SERVICE_PLUGIN_DBUS_WATCH_PEER,
"",
"",
FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
/**
* NMVpnServicePlugin:state:
*
* The state of the plugin.
*
* Since: 1.2
*/
obj_properties[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);
g_object_class_install_properties(object_class, _PROPERTY_ENUMS_LAST, obj_properties);
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 compile
* the code. */
#include "nm-utils/nm-vpn-editor-plugin-call.h"