plugin: Add VPN plugin that will interact with vpnd
authorJukka Rissanen <jukka.rissanen@linux.intel.com>
Mon, 12 Nov 2012 12:07:28 +0000 (14:07 +0200)
committerPatrik Flykt <patrik.flykt@linux.intel.com>
Fri, 23 Nov 2012 10:58:51 +0000 (12:58 +0200)
Makefile.plugins
plugins/vpn.c [new file with mode: 0644]

index 2c5d66d..1ab0543 100644 (file)
@@ -52,6 +52,9 @@ builtin_sources += plugins/dundee.c
 endif
 
 if VPN
+builtin_modules += vpn
+builtin_sources += plugins/vpn.c
+
 if OPENCONNECT
 if OPENCONNECT_BUILTIN
 builtin_vpn_modules += openconnect
diff --git a/plugins/vpn.c b/plugins/vpn.c
new file mode 100644 (file)
index 0000000..da1f982
--- /dev/null
@@ -0,0 +1,1164 @@
+/*
+ *
+ *  Connection Manager
+ *
+ *  Copyright (C) 2012  Intel Corporation. All rights reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  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
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string.h>
+#include <errno.h>
+#include <sys/socket.h>
+#include <stdlib.h>
+#include <glib.h>
+
+#include <gdbus.h>
+
+#define CONNMAN_API_SUBJECT_TO_CHANGE
+#include <connman/technology.h>
+#include <connman/plugin.h>
+#include <connman/log.h>
+#include <connman/dbus.h>
+#include <connman/provider.h>
+#include <connman/ipaddress.h>
+#include <connman/vpn-dbus.h>
+
+#define DBUS_TIMEOUT 10000
+
+static DBusConnection *connection;
+
+static GHashTable *vpn_connections = NULL;
+static gboolean starting_vpnd = TRUE;
+static guint watch;
+static guint added_watch;
+static guint removed_watch;
+static guint property_watch;
+
+struct connection_data {
+       char *path;
+       struct connman_provider *provider;
+       int index;
+       DBusPendingCall *call;
+
+       char *state;
+       char *type;
+       char *name;
+       char *host;
+       char *domain;
+       char **nameservers;
+
+       GHashTable *setting_strings;
+
+       struct connman_ipaddress *ip;
+};
+
+static int set_string(struct connman_provider *provider,
+                                       const char *key, const char *value)
+{
+       struct connection_data *data;
+
+       data = connman_provider_get_data(provider);
+       if (data == NULL)
+               return -EINVAL;
+
+       DBG("data %p provider %p key %s value %s", data, provider, key, value);
+
+       if (g_str_equal(key, "Type") == TRUE) {
+               g_free(data->type);
+               data->type = g_strdup(value);
+       } else if (g_str_equal(key, "Name") == TRUE) {
+               g_free(data->name);
+               data->name = g_strdup(value);
+       } else if (g_str_equal(key, "Host") == TRUE) {
+               g_free(data->host);
+               data->host = g_strdup(value);
+       } else if (g_str_equal(key, "VPN.Domain") == TRUE ||
+                               g_str_equal(key, "Domain") == TRUE) {
+               g_free(data->domain);
+               data->domain = g_strdup(value);
+       } else
+               g_hash_table_replace(data->setting_strings,
+                               g_strdup(key), g_strdup(value));
+       return 0;
+}
+
+static const char *get_string(struct connman_provider *provider,
+                                                       const char *key)
+{
+       struct connection_data *data;
+
+       data = connman_provider_get_data(provider);
+       if (data == NULL)
+               return NULL;
+
+       DBG("data %p provider %p key %s", data, provider, key);
+
+       if (g_str_equal(key, "Type") == TRUE)
+               return data->type;
+       else if (g_str_equal(key, "Name") == TRUE)
+               return data->name;
+       else if (g_str_equal(key, "Host") == TRUE)
+               return data->host;
+       else if (g_str_equal(key, "VPN.Domain") == TRUE)
+               return data->domain;
+
+       return g_hash_table_lookup(data->setting_strings, key);
+}
+
+static char *get_ident(const char *path)
+{
+       char *pos;
+
+       if (*path != '/')
+               return NULL;
+
+       pos = strrchr(path, '/');
+       if (pos == NULL)
+               return NULL;
+
+       return pos + 1;
+}
+
+static void set_provider_state(struct connection_data *data)
+{
+       if (g_str_equal(data->state, "ready") == TRUE)
+               connman_provider_set_state(data->provider,
+                                       CONNMAN_PROVIDER_STATE_READY);
+       else if (g_str_equal(data->state, "configuration") == TRUE)
+               connman_provider_set_state(data->provider,
+                                       CONNMAN_PROVIDER_STATE_CONNECT);
+       else if (g_str_equal(data->state, "idle") == TRUE)
+               connman_provider_set_state(data->provider,
+                                       CONNMAN_PROVIDER_STATE_IDLE);
+       else if (g_str_equal(data->state, "disconnect") == TRUE)
+               connman_provider_set_state(data->provider,
+                                       CONNMAN_PROVIDER_STATE_DISCONNECT);
+       else if (g_str_equal(data->state, "failure") == TRUE)
+               connman_provider_set_state(data->provider,
+                                       CONNMAN_PROVIDER_STATE_FAILURE);
+       else
+               connman_provider_set_state(data->provider,
+                                       CONNMAN_PROVIDER_STATE_UNKNOWN);
+}
+
+static int create_provider(struct connection_data *data, void *user_data)
+{
+       struct connman_provider_driver *driver = user_data;
+       char *ident;
+       int err = 0;
+
+       DBG("%s", data->path);
+
+       ident = g_strdup(get_ident(data->path));
+
+       data->provider = connman_provider_get(ident);
+       if (data->provider == NULL) {
+               err = -ENOMEM;
+               goto out;
+       }
+
+       DBG("provider %p name %s", data->provider, data->name);
+
+       connman_provider_set_data(data->provider, data);
+       connman_provider_set_driver(data->provider, driver);
+
+       err = connman_provider_create_service(data->provider);
+       if (err == 0) {
+               if (g_str_equal(data->state, "ready") == TRUE) {
+                       connman_provider_set_index(data->provider,
+                                                       data->index);
+                       if (data->ip != NULL)
+                               connman_provider_set_ipaddress(data->provider,
+                                                               data->ip);
+               }
+
+               set_provider_state(data);
+       }
+
+out:
+       g_free(ident);
+       return err;
+}
+
+static struct connection_data *create_connection_data(const char *path)
+{
+       struct connection_data *data;
+
+       data = g_try_new0(struct connection_data, 1);
+       if (data == NULL)
+               return NULL;
+
+       DBG("path %s", path);
+
+       data->path = g_strdup(path);
+       data->index = -1;
+
+       data->setting_strings = g_hash_table_new_full(g_str_hash,
+                                               g_str_equal, g_free, g_free);
+
+       return data;
+}
+
+static int extract_ip(DBusMessageIter *array, int family,
+                                               struct connection_data *data)
+{
+       DBusMessageIter dict;
+       char *address = NULL, *gateway = NULL, *netmask = NULL, *peer = NULL;
+       unsigned char prefix_len;
+
+       if (dbus_message_iter_get_arg_type(array) != DBUS_TYPE_ARRAY)
+               return -EINVAL;
+
+       dbus_message_iter_recurse(array, &dict);
+
+       while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
+               DBusMessageIter entry, value;
+               const char *key;
+
+               dbus_message_iter_recurse(&dict, &entry);
+               dbus_message_iter_get_basic(&entry, &key);
+
+               dbus_message_iter_next(&entry);
+               dbus_message_iter_recurse(&entry, &value);
+
+               if (g_str_equal(key, "Address") == TRUE) {
+                       dbus_message_iter_get_basic(&value, &address);
+                       DBG("address %s", address);
+               } else if (g_str_equal(key, "Netmask") == TRUE) {
+                       dbus_message_iter_get_basic(&value, &netmask);
+                       DBG("netmask %s", netmask);
+               } else if (g_str_equal(key, "PrefixLength") == TRUE) {
+                       dbus_message_iter_get_basic(&value, &netmask);
+                       DBG("prefix length %s", netmask);
+               } else if (g_str_equal(key, "Peer") == TRUE) {
+                       dbus_message_iter_get_basic(&value, &peer);
+                       DBG("peer %s", peer);
+               } else if (g_str_equal(key, "Gateway") == TRUE) {
+                       dbus_message_iter_get_basic(&value, &gateway);
+                       DBG("gateway %s", gateway);
+               }
+
+               dbus_message_iter_next(&dict);
+       }
+
+       data->ip = connman_ipaddress_alloc(family);
+       if (data->ip == NULL)
+               return -ENOMEM;
+
+       switch (family) {
+       case AF_INET:
+               connman_ipaddress_set_ipv4(data->ip, address, netmask,
+                                                               gateway);
+               break;
+       case AF_INET6:
+               prefix_len = atoi(netmask);
+               connman_ipaddress_set_ipv6(data->ip, address, prefix_len,
+                                                               gateway);
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       connman_ipaddress_set_peer(data->ip, peer);
+
+       return 0;
+}
+
+static int extract_nameservers(DBusMessageIter *array,
+                                               struct connection_data *data)
+{
+       DBusMessageIter entry;
+       char **nameservers = NULL;
+       int i = 0;
+
+       dbus_message_iter_recurse(array, &entry);
+
+       while (dbus_message_iter_get_arg_type(&entry) == DBUS_TYPE_STRING) {
+               const char *nameserver;
+
+               dbus_message_iter_get_basic(&entry, &nameserver);
+
+               nameservers = g_try_renew(char *, nameservers, i + 2);
+               if (nameservers == NULL)
+                       return -ENOMEM;
+
+               DBG("[%d] %s", i, nameserver);
+
+               nameservers[i] = g_strdup(nameserver);
+               if (nameservers[i] == NULL)
+                       return -ENOMEM;
+
+               nameservers[++i] = NULL;
+
+               dbus_message_iter_next(&entry);
+       }
+
+       g_strfreev(data->nameservers);
+       data->nameservers = nameservers;
+
+       return 0;
+}
+
+static void connect_reply(DBusPendingCall *call, void *user_data)
+{
+       DBusMessage *reply;
+       DBusError error;
+
+       if (dbus_pending_call_get_completed(call) == FALSE)
+               return;
+
+       DBG("user_data %p", user_data);
+
+       reply = dbus_pending_call_steal_reply(call);
+
+       dbus_error_init(&error);
+
+       if (dbus_set_error_from_message(&error, reply) == TRUE) {
+               if (dbus_error_has_name(&error, CONNMAN_ERROR_INTERFACE
+                                               ".InProgress") == FALSE) {
+                       connman_error("Connect reply: %s (%s)", error.message,
+                                                               error.name);
+                       dbus_error_free(&error);
+                       goto done;
+               }
+               dbus_error_free(&error);
+       }
+
+       /*
+        * The vpn connection is up when we get a "ready" state
+        * property so at this point we do nothing for the provider
+        * state.
+        */
+
+done:
+       dbus_message_unref(reply);
+
+       dbus_pending_call_unref(call);
+}
+
+static int connect_provider(struct connection_data *data, void *user_data)
+{
+       DBusPendingCall *call;
+       DBusMessage *message;
+
+       DBG("data %p", data);
+
+       message = dbus_message_new_method_call(VPN_SERVICE, data->path,
+                                       VPN_CONNECTION_INTERFACE,
+                                       VPN_CONNECT);
+       if (message == NULL)
+               return -ENOMEM;
+
+       if (dbus_connection_send_with_reply(connection, message,
+                                       &call, DBUS_TIMEOUT) == FALSE) {
+               connman_error("Unable to call %s.%s()",
+                       VPN_CONNECTION_INTERFACE, VPN_CONNECT);
+               dbus_message_unref(message);
+               return -EINVAL;
+       }
+
+       if (call == NULL) {
+               dbus_message_unref(message);
+               return -EINVAL;
+       }
+
+       dbus_pending_call_set_notify(call, connect_reply, NULL, NULL);
+
+       dbus_message_unref(message);
+
+       return -EINPROGRESS;
+}
+
+static void add_connection(const char *path, DBusMessageIter *properties,
+                       void *user_data)
+{
+       struct connection_data *data;
+       int err;
+
+       data = g_hash_table_lookup(vpn_connections, path);
+       if (data != NULL)
+               return;
+
+       data = create_connection_data(path);
+       if (data == NULL)
+               return;
+
+       DBG("data %p path %s", data, path);
+
+       while (dbus_message_iter_get_arg_type(properties) ==
+                       DBUS_TYPE_DICT_ENTRY) {
+               DBusMessageIter entry, value;
+               const char *key;
+               char *str;
+
+               dbus_message_iter_recurse(properties, &entry);
+               dbus_message_iter_get_basic(&entry, &key);
+
+               dbus_message_iter_next(&entry);
+               dbus_message_iter_recurse(&entry, &value);
+
+               if (g_str_equal(key, "State") == TRUE) {
+                       dbus_message_iter_get_basic(&value, &str);
+                       DBG("state %s -> %s", data->state, str);
+                       data->state = g_strdup(str);
+               } else if (g_str_equal(key, "IPv4") == TRUE) {
+                       extract_ip(&value, AF_INET, data);
+               } else if (g_str_equal(key, "IPv6") == TRUE) {
+                       extract_ip(&value, AF_INET6, data);
+               } else if (g_str_equal(key, "Name") == TRUE) {
+                       dbus_message_iter_get_basic(&value, &str);
+                       data->name = g_strdup(str);
+               } else if (g_str_equal(key, "Type") == TRUE) {
+                       dbus_message_iter_get_basic(&value, &str);
+                       data->type = g_strdup(str);
+               } else if (g_str_equal(key, "Host") == TRUE) {
+                       dbus_message_iter_get_basic(&value, &str);
+                       data->host = g_strdup(str);
+               } else if (g_str_equal(key, "Domain") == TRUE) {
+                       dbus_message_iter_get_basic(&value, &str);
+                       data->domain = g_strdup(str);
+               } else if (g_str_equal(key, "Nameservers") == TRUE) {
+                       extract_nameservers(&value, data);
+               } else if (g_str_equal(key, "Index") == TRUE) {
+                       dbus_message_iter_get_basic(&value, &data->index);
+               } else {
+                       if (dbus_message_iter_get_arg_type(&value) ==
+                                                       DBUS_TYPE_STRING) {
+                               dbus_message_iter_get_basic(&value, &str);
+                               g_hash_table_replace(data->setting_strings,
+                                               g_strdup(key), g_strdup(str));
+                       } else {
+                               DBG("unknown key %s", key);
+                       }
+               }
+
+               dbus_message_iter_next(properties);
+       }
+
+       g_hash_table_insert(vpn_connections, g_strdup(path), data);
+
+       err = create_provider(data, user_data);
+       if (err < 0)
+               goto out;
+
+       return;
+
+out:
+       DBG("removing %s", path);
+       g_hash_table_remove(vpn_connections, path);
+}
+
+static void get_connections_reply(DBusPendingCall *call, void *user_data)
+{
+       DBusMessage *reply;
+       DBusError error;
+       DBusMessageIter array, dict;
+       const char *signature = DBUS_TYPE_ARRAY_AS_STRING
+               DBUS_STRUCT_BEGIN_CHAR_AS_STRING
+               DBUS_TYPE_OBJECT_PATH_AS_STRING
+               DBUS_TYPE_ARRAY_AS_STRING
+               DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
+               DBUS_TYPE_STRING_AS_STRING
+               DBUS_TYPE_VARIANT_AS_STRING
+               DBUS_DICT_ENTRY_END_CHAR_AS_STRING
+               DBUS_STRUCT_END_CHAR_AS_STRING;
+
+       DBG("");
+
+       reply = dbus_pending_call_steal_reply(call);
+
+       if (dbus_message_has_signature(reply, signature) == FALSE) {
+               connman_error("vpnd signature \"%s\" does not match "
+                                                       "expected \"%s\"",
+                       dbus_message_get_signature(reply), signature);
+               goto done;
+       }
+
+       dbus_error_init(&error);
+
+       if (dbus_set_error_from_message(&error, reply) == TRUE) {
+               connman_error("%s", error.message);
+               dbus_error_free(&error);
+               goto done;
+       }
+
+       if (dbus_message_iter_init(reply, &array) == FALSE)
+               goto done;
+
+       dbus_message_iter_recurse(&array, &dict);
+
+       while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_STRUCT) {
+               DBusMessageIter value, properties;
+               const char *path;
+
+               dbus_message_iter_recurse(&dict, &value);
+               dbus_message_iter_get_basic(&value, &path);
+
+               dbus_message_iter_next(&value);
+               dbus_message_iter_recurse(&value, &properties);
+
+               add_connection(path, &properties, user_data);
+
+               dbus_message_iter_next(&dict);
+       }
+
+done:
+       dbus_message_unref(reply);
+
+       dbus_pending_call_unref(call);
+}
+
+static int get_connections(void *user_data)
+{
+       DBusPendingCall *call;
+       DBusMessage *message;
+
+       DBG("");
+
+       message = dbus_message_new_method_call(VPN_SERVICE, "/",
+                                       VPN_MANAGER_INTERFACE,
+                                       GET_CONNECTIONS);
+       if (message == NULL)
+               return -ENOMEM;
+
+       if (dbus_connection_send_with_reply(connection, message,
+                                       &call, DBUS_TIMEOUT) == FALSE) {
+               connman_error("Unable to call %s.%s()", VPN_MANAGER_INTERFACE,
+                                                       GET_CONNECTIONS);
+               dbus_message_unref(message);
+               return -EINVAL;
+       }
+
+       if (call == NULL) {
+               dbus_message_unref(message);
+               return -EINVAL;
+       }
+
+       dbus_pending_call_set_notify(call, get_connections_reply,
+                                                       user_data, NULL);
+
+       dbus_message_unref(message);
+
+       return -EINPROGRESS;
+}
+
+static int provider_probe(struct connman_provider *provider)
+{
+       return 0;
+}
+
+static void remove_connection_reply(DBusPendingCall *call, void *user_data)
+{
+       DBusMessage *reply;
+       DBusError error;
+
+       DBG("");
+
+       reply = dbus_pending_call_steal_reply(call);
+
+       dbus_error_init(&error);
+
+       if (dbus_set_error_from_message(&error, reply) == TRUE) {
+               /*
+                * If the returned error is NotFound, it means that we
+                * have actually removed the provider in vpnd already.
+                */
+               if (dbus_error_has_name(&error, CONNMAN_ERROR_INTERFACE
+                                               ".NotFound") == FALSE)
+                       connman_error("%s", error.message);
+
+               dbus_error_free(&error);
+       }
+
+       dbus_message_unref(reply);
+
+       dbus_pending_call_unref(call);
+}
+
+static int provider_remove(struct connman_provider *provider)
+{
+       DBusPendingCall *call;
+       DBusMessage *message;
+       struct connection_data *data;
+
+       data = connman_provider_get_data(provider);
+
+       DBG("provider %p data %p", provider, data);
+
+       /*
+        * When provider.c:provider_remove() calls this function,
+        * it will remove the provider itself after the call.
+        * This means that we cannot use the provider pointer later
+        * as it is no longer valid.
+        */
+       data->provider = NULL;
+
+       message = dbus_message_new_method_call(VPN_SERVICE, "/",
+                                       VPN_MANAGER_INTERFACE,
+                                       VPN_REMOVE);
+       if (message == NULL)
+               return -ENOMEM;
+
+       dbus_message_append_args(message, DBUS_TYPE_OBJECT_PATH, &data->path,
+                               NULL);
+
+       if (dbus_connection_send_with_reply(connection, message,
+                                       &call, DBUS_TIMEOUT) == FALSE) {
+               connman_error("Unable to call %s.%s()", VPN_MANAGER_INTERFACE,
+                                                       VPN_REMOVE);
+               dbus_message_unref(message);
+               return -EINVAL;
+       }
+
+       if (call == NULL) {
+               dbus_message_unref(message);
+               return -EINVAL;
+       }
+
+       dbus_pending_call_set_notify(call, remove_connection_reply,
+                                                       NULL, NULL);
+
+       dbus_message_unref(message);
+
+       return 0;
+}
+
+static int provider_connect(struct connman_provider *provider)
+{
+       struct connection_data *data;
+
+       data = connman_provider_get_data(provider);
+       if (data == NULL)
+               return -EINVAL;
+
+       return connect_provider(data, NULL);
+
+}
+
+static void disconnect_reply(DBusPendingCall *call, void *user_data)
+{
+       DBusMessage *reply;
+       DBusError error;
+
+       DBG("");
+
+       reply = dbus_pending_call_steal_reply(call);
+
+       dbus_error_init(&error);
+
+       if (dbus_set_error_from_message(&error, reply) == TRUE) {
+               connman_error("%s", error.message);
+               dbus_error_free(&error);
+               goto done;
+       }
+
+done:
+       dbus_message_unref(reply);
+
+       dbus_pending_call_unref(call);
+}
+
+static int disconnect_provider(struct connection_data *data)
+{
+       DBusPendingCall *call;
+       DBusMessage *message;
+
+       DBG("data %p path %s", data, data->path);
+
+       message = dbus_message_new_method_call(VPN_SERVICE, data->path,
+                                       VPN_CONNECTION_INTERFACE,
+                                       VPN_DISCONNECT);
+       if (message == NULL)
+               return -ENOMEM;
+
+       if (dbus_connection_send_with_reply(connection, message,
+                                       &call, DBUS_TIMEOUT) == FALSE) {
+               connman_error("Unable to call %s.%s()",
+                       VPN_CONNECTION_INTERFACE, VPN_DISCONNECT);
+               dbus_message_unref(message);
+               return -EINVAL;
+       }
+
+       if (call == NULL) {
+               dbus_message_unref(message);
+               return -EINVAL;
+       }
+
+       dbus_pending_call_set_notify(call, disconnect_reply, NULL, NULL);
+
+       dbus_message_unref(message);
+
+       connman_provider_set_state(data->provider,
+                                       CONNMAN_PROVIDER_STATE_DISCONNECT);
+       /*
+        * We return 0 here instead of -EINPROGRESS because
+        * __connman_service_disconnect() needs to return something
+        * to gdbus so that gdbus will not call Disconnect() more
+        * than once. This way we do not need to pass the dbus reply
+        * message around the code.
+        */
+       return 0;
+}
+
+static int provider_disconnect(struct connman_provider *provider)
+{
+       struct connection_data *data;
+
+       DBG("provider %p", provider);
+
+       data = connman_provider_get_data(provider);
+       if (data == NULL)
+               return -EINVAL;
+
+       if (g_str_equal(data->state, "ready") == TRUE ||
+                       g_str_equal(data->state, "configuration") == TRUE)
+               return disconnect_provider(data);
+
+       return 0;
+}
+
+static void configuration_create_reply(DBusPendingCall *call, void *user_data)
+{
+       DBusMessage *reply;
+       DBusError error;
+       DBusMessageIter iter;
+       const char *signature = DBUS_TYPE_OBJECT_PATH_AS_STRING;
+       const char *path;
+
+       DBG("user %p", user_data);
+
+       reply = dbus_pending_call_steal_reply(call);
+
+       if (dbus_message_has_signature(reply, signature) == FALSE) {
+               connman_error("vpn configuration signature \"%s\" does not "
+                                               "match expected \"%s\"",
+                       dbus_message_get_signature(reply), signature);
+               goto done;
+       }
+
+       dbus_error_init(&error);
+
+       if (dbus_set_error_from_message(&error, reply) == TRUE) {
+               connman_error("dbus error: %s", error.message);
+               dbus_error_free(&error);
+               goto done;
+       }
+
+       if (dbus_message_iter_init(reply, &iter) == FALSE)
+               goto done;
+
+       dbus_message_iter_get_basic(&iter, &path);
+
+       /*
+        * Then try to connect the VPN as expected by ConnectProvider API
+        */
+       // XXX:
+
+done:
+       dbus_message_unref(reply);
+
+       dbus_pending_call_unref(call);
+}
+
+static void set_dbus_ident(char *ident)
+{
+       int i, len = strlen(ident);
+
+       for (i = 0; i < len; i++) {
+               if (ident[i] >= '0' && ident[i] <= '9')
+                       continue;
+               if (ident[i] >= 'a' && ident[i] <= 'z')
+                       continue;
+               if (ident[i] >= 'A' && ident[i] <= 'Z')
+                       continue;
+               ident[i] = '_';
+       }
+}
+
+static int create_configuration(DBusMessage *msg)
+{
+       DBusMessage *new_msg;
+       DBusPendingCall *call;
+       DBusMessageIter iter, array;
+       const char *type = NULL, *name = NULL;
+       const char *host = NULL, *domain = NULL;
+       char *ident, *me;
+       int err;
+       dbus_bool_t result;
+       struct connection_data *data;
+
+       dbus_message_iter_init(msg, &iter);
+       dbus_message_iter_recurse(&iter, &array);
+
+       while (dbus_message_iter_get_arg_type(&array) == DBUS_TYPE_DICT_ENTRY) {
+               DBusMessageIter entry, value;
+               const char *key;
+
+               dbus_message_iter_recurse(&array, &entry);
+               dbus_message_iter_get_basic(&entry, &key);
+
+               dbus_message_iter_next(&entry);
+               dbus_message_iter_recurse(&entry, &value);
+
+               switch (dbus_message_iter_get_arg_type(&value)) {
+               case DBUS_TYPE_STRING:
+                       if (g_str_equal(key, "Type") == TRUE)
+                               dbus_message_iter_get_basic(&value, &type);
+                       else if (g_str_equal(key, "Name") == TRUE)
+                               dbus_message_iter_get_basic(&value, &name);
+                       else if (g_str_equal(key, "Host") == TRUE)
+                               dbus_message_iter_get_basic(&value, &host);
+                       else if (g_str_equal(key, "VPN.Domain") == TRUE)
+                               dbus_message_iter_get_basic(&value, &domain);
+                       break;
+               }
+
+               dbus_message_iter_next(&array);
+       }
+
+       DBG("VPN type %s name %s host %s domain %s", type, name, host, domain);
+
+       if (host == NULL || domain == NULL)
+               return -EINVAL;
+
+       if (type == NULL || name == NULL)
+               return -EOPNOTSUPP;
+
+       ident = g_strdup_printf("%s_%s", host, domain);
+       set_dbus_ident(ident);
+
+       DBG("ident %s", ident);
+
+       data = g_hash_table_lookup(vpn_connections, ident);
+       if (data != NULL) {
+               if (data->call != NULL) {
+                       connman_error("Dbus call already pending");
+                       return -EINPROGRESS;
+               }
+       } else {
+               data = create_connection_data(ident);
+               if (data == NULL)
+                       return -ENOMEM;
+
+               g_hash_table_insert(vpn_connections, g_strdup(ident), data);
+       }
+
+       /*
+        * User called net.connman.Manager.ConnectProvider if we are here.
+        * The config dict is already there in the original message so use it.
+        */
+       me = g_strdup(dbus_message_get_destination(msg));
+
+       new_msg = dbus_message_copy(msg);
+
+       dbus_message_set_interface(new_msg, VPN_MANAGER_INTERFACE);
+       dbus_message_set_path(new_msg, "/");
+       dbus_message_set_destination(new_msg, VPN_SERVICE);
+       dbus_message_set_sender(new_msg, me);
+       dbus_message_set_member(new_msg, "Create");
+
+       result = dbus_connection_send_with_reply(connection, new_msg,
+                                               &call, DBUS_TIMEOUT);
+       if (result == FALSE || call == NULL) {
+               err = -EIO;
+               goto done;
+       }
+
+       dbus_pending_call_set_notify(call, configuration_create_reply,
+                                                               NULL, NULL);
+       data->call = call;
+
+done:
+       dbus_message_unref(new_msg);
+
+       g_free(me);
+       return err;
+}
+
+static struct connman_provider_driver provider_driver = {
+       .name = "VPN",
+       .type = CONNMAN_PROVIDER_TYPE_VPN,
+       .probe = provider_probe,
+       .remove = provider_remove,
+       .connect = provider_connect,
+       .disconnect = provider_disconnect,
+       .set_property = set_string,
+       .get_property = get_string,
+       .create = create_configuration,
+};
+
+static void destroy_provider(struct connection_data *data)
+{
+       DBG("data %p", data);
+
+       if (g_str_equal(data->state, "ready") == TRUE ||
+                       g_str_equal(data->state, "configuration") == TRUE)
+               connman_provider_disconnect(data->provider);
+
+       if (data->call != NULL)
+               dbus_pending_call_cancel(data->call);
+
+       connman_provider_put(data->provider);
+
+       data->provider = NULL;
+}
+
+static void connection_destroy(gpointer hash_data)
+{
+       struct connection_data *data = hash_data;
+
+       DBG("data %p", data);
+
+       if (data->provider != NULL)
+               destroy_provider(data);
+
+       g_free(data->path);
+       g_free(data->state);
+       g_free(data->type);
+       g_free(data->name);
+       g_free(data->host);
+       g_free(data->domain);
+       g_strfreev(data->nameservers);
+       g_hash_table_destroy(data->setting_strings);
+       connman_ipaddress_free(data->ip);
+
+       g_free(data);
+}
+
+static void vpnd_created(DBusConnection *conn, void *user_data)
+{
+       DBG("connection %p", conn);
+
+       if (starting_vpnd == TRUE) {
+               vpn_connections = g_hash_table_new_full(g_str_hash,
+                                               g_str_equal,
+                                               g_free, connection_destroy);
+               get_connections(user_data);
+               starting_vpnd = FALSE;
+       }
+}
+
+static void vpnd_removed(DBusConnection *conn, void *user_data)
+{
+       DBG("connection %p", conn);
+
+       g_hash_table_destroy(vpn_connections);
+       vpn_connections = NULL;
+       starting_vpnd = TRUE;
+}
+
+static void remove_connection(DBusConnection *conn, const char *path)
+{
+       DBG("path %s", path);
+
+       g_hash_table_remove(vpn_connections, path);
+}
+
+static gboolean connection_removed(DBusConnection *conn, DBusMessage *message,
+                               void *user_data)
+{
+       const char *path;
+       const char *signature = DBUS_TYPE_OBJECT_PATH_AS_STRING;
+
+       if (dbus_message_has_signature(message, signature) == FALSE) {
+               connman_error("vpn removed signature \"%s\" does not match "
+                                                       "expected \"%s\"",
+                       dbus_message_get_signature(message), signature);
+               return TRUE;
+       }
+
+       dbus_message_get_args(message, NULL, DBUS_TYPE_OBJECT_PATH, &path,
+                               DBUS_TYPE_INVALID);
+       remove_connection(conn, path);
+       return TRUE;
+}
+
+static gboolean connection_added(DBusConnection *conn, DBusMessage *message,
+                               void *user_data)
+{
+       DBusMessageIter iter, properties;
+       const char *path;
+       const char *signature = DBUS_TYPE_OBJECT_PATH_AS_STRING
+               DBUS_TYPE_ARRAY_AS_STRING
+               DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
+               DBUS_TYPE_STRING_AS_STRING
+               DBUS_TYPE_VARIANT_AS_STRING
+               DBUS_DICT_ENTRY_END_CHAR_AS_STRING;
+
+       if (dbus_message_has_signature(message, signature) == FALSE) {
+               connman_error("vpn ConnectionAdded signature \"%s\" does not "
+                                               "match expected \"%s\"",
+                       dbus_message_get_signature(message), signature);
+               return TRUE;
+       }
+
+       DBG("");
+
+       if (dbus_message_iter_init(message, &iter) == FALSE)
+               return TRUE;
+
+       dbus_message_iter_get_basic(&iter, &path);
+
+       dbus_message_iter_next(&iter);
+       dbus_message_iter_recurse(&iter, &properties);
+
+       add_connection(path, &properties, user_data);
+
+       return TRUE;
+}
+
+static gboolean property_changed(DBusConnection *conn,
+                               DBusMessage *message,
+                               void *user_data)
+{
+       const char *path = dbus_message_get_path(message);
+       struct connection_data *data = NULL;
+       DBusMessageIter iter, value;
+       connman_bool_t ip_set = FALSE;
+       int err;
+       char *str;
+       const char *key;
+       const char *signature = DBUS_TYPE_STRING_AS_STRING
+               DBUS_TYPE_VARIANT_AS_STRING;
+
+       if (dbus_message_has_signature(message, signature) == FALSE) {
+               connman_error("vpn property signature \"%s\" does not match "
+                                                       "expected \"%s\"",
+                       dbus_message_get_signature(message), signature);
+               return TRUE;
+       }
+
+       data = g_hash_table_lookup(vpn_connections, path);
+       if (data == NULL)
+               return TRUE;
+
+       if (dbus_message_iter_init(message, &iter) == FALSE)
+               return TRUE;
+
+       dbus_message_iter_get_basic(&iter, &key);
+
+       dbus_message_iter_next(&iter);
+       dbus_message_iter_recurse(&iter, &value);
+
+       DBG("key %s", key);
+
+       if (g_str_equal(key, "State") == TRUE) {
+               dbus_message_iter_get_basic(&value, &str);
+
+               DBG("%s %s -> %s", data->path, data->state, str);
+
+               if (g_str_equal(data->state, str) == TRUE)
+                       return TRUE;
+
+               g_free(data->state);
+               data->state = g_strdup(str);
+
+               set_provider_state(data);
+       } else if (g_str_equal(key, "Index") == TRUE) {
+               dbus_message_iter_get_basic(&value, &data->index);
+               connman_provider_set_index(data->provider, data->index);
+       } else if (g_str_equal(key, "IPv4") == TRUE) {
+               err = extract_ip(&value, AF_INET, data);
+               ip_set = TRUE;
+       } else if (g_str_equal(key, "IPv6") == TRUE) {
+               err = extract_ip(&value, AF_INET6, data);
+               ip_set = TRUE;
+       } else if (g_str_equal(key, "ServerRoutes") == TRUE) {
+               /* XXX: TBD */
+       } else if (g_str_equal(key, "UserRoutes") == TRUE) {
+               /* XXX: TBD */
+       } else if (g_str_equal(key, "Nameservers") == TRUE) {
+               extract_nameservers(&value, data);
+       }
+
+       if (ip_set == TRUE && err == 0) {
+               err = connman_provider_set_ipaddress(data->provider, data->ip);
+               if (err < 0)
+                       DBG("setting provider IP address failed (%s/%d)",
+                               strerror(-err), -err);
+       }
+
+       return TRUE;
+}
+
+static int vpn_init(void)
+{
+       int err;
+
+       connection = connman_dbus_get_connection();
+       if (connection == NULL)
+               return -EIO;
+
+       watch = g_dbus_add_service_watch(connection, VPN_SERVICE,
+                       vpnd_created, vpnd_removed, &provider_driver, NULL);
+
+       added_watch = g_dbus_add_signal_watch(connection, VPN_SERVICE, NULL,
+                                       VPN_MANAGER_INTERFACE,
+                                       CONNECTION_ADDED, connection_added,
+                                       &provider_driver, NULL);
+
+       removed_watch = g_dbus_add_signal_watch(connection, VPN_SERVICE, NULL,
+                                       VPN_MANAGER_INTERFACE,
+                                       CONNECTION_REMOVED, connection_removed,
+                                       NULL, NULL);
+
+       property_watch = g_dbus_add_signal_watch(connection, VPN_SERVICE, NULL,
+                                       VPN_CONNECTION_INTERFACE,
+                                       PROPERTY_CHANGED, property_changed,
+                                       NULL, NULL);
+
+       if (added_watch == 0 || removed_watch == 0 || property_watch == 0) {
+               err = -EIO;
+               goto remove;
+       }
+
+       err = connman_provider_driver_register(&provider_driver);
+       if (err == 0)
+               vpnd_created(connection, &provider_driver);
+
+       return err;
+
+remove:
+       g_dbus_remove_watch(connection, watch);
+       g_dbus_remove_watch(connection, added_watch);
+       g_dbus_remove_watch(connection, removed_watch);
+       g_dbus_remove_watch(connection, property_watch);
+
+       dbus_connection_unref(connection);
+
+       return err;
+}
+
+static void vpn_exit(void)
+{
+       g_dbus_remove_watch(connection, watch);
+       g_dbus_remove_watch(connection, added_watch);
+       g_dbus_remove_watch(connection, removed_watch);
+       g_dbus_remove_watch(connection, property_watch);
+
+       connman_provider_driver_unregister(&provider_driver);
+
+       g_hash_table_destroy(vpn_connections);
+
+       dbus_connection_unref(connection);
+}
+
+CONNMAN_PLUGIN_DEFINE(vpn, "VPN plugin", VERSION,
+               CONNMAN_PLUGIN_PRIORITY_DEFAULT, vpn_init, vpn_exit)