[PATCH v5 12/42] plugin: Add VPN plugin that will interact with vpnd

Jukka Rissanen jukka.rissanen at linux.intel.com
Mon Nov 12 04:07:28 PST 2012


---
 Makefile.plugins |    3 +
 plugins/vpn.c    | 1164 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 1167 insertions(+)
 create mode 100644 plugins/vpn.c

diff --git a/Makefile.plugins b/Makefile.plugins
index 2c5d66d..1ab0543 100644
--- a/Makefile.plugins
+++ b/Makefile.plugins
@@ -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
index 0000000..da1f982
--- /dev/null
+++ b/plugins/vpn.c
@@ -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)
-- 
1.7.11.4




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