connman/gsupplicant/supplicant.c

/*
 *
 *  WPA supplicant library with GLib integration
 *
 *  Copyright (C) 2012-2013  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 <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <syslog.h>
#include <ctype.h>
#include <stdbool.h>
#include <netinet/if_ether.h>
#include <netinet/in.h>

#include <glib.h>
#include <gdbus.h>

#include "dbus.h"
#include "gsupplicant.h"

#define IEEE80211_CAP_ESS	0x0001
#define IEEE80211_CAP_IBSS	0x0002
#define IEEE80211_CAP_PRIVACY	0x0010

#define BSS_UNKNOWN_STRENGTH    -90

static DBusConnection *connection;

static const GSupplicantCallbacks *callbacks_pointer;

static dbus_bool_t system_available = FALSE;
static dbus_bool_t system_ready = FALSE;

static dbus_int32_t debug_level;
static dbus_bool_t debug_timestamp = FALSE;
static dbus_bool_t debug_showkeys = FALSE;

static const char *debug_strings[] = {
	"msgdump", "debug", "info", "warning", "error", NULL
};

static unsigned int eap_methods;

struct strvalmap {
	const char *str;
	unsigned int val;
};

static struct strvalmap eap_method_map[] = {
	{ "MD5",	G_SUPPLICANT_EAP_METHOD_MD5	},
	{ "TLS",	G_SUPPLICANT_EAP_METHOD_TLS	},
	{ "MSCHAPV2",	G_SUPPLICANT_EAP_METHOD_MSCHAPV2	},
	{ "PEAP",	G_SUPPLICANT_EAP_METHOD_PEAP	},
	{ "TTLS",	G_SUPPLICANT_EAP_METHOD_TTLS	},
	{ "GTC",	G_SUPPLICANT_EAP_METHOD_GTC	},
	{ "OTP",	G_SUPPLICANT_EAP_METHOD_OTP	},
	{ "LEAP",	G_SUPPLICANT_EAP_METHOD_LEAP	},
	{ "WSC",	G_SUPPLICANT_EAP_METHOD_WSC	},
	{ }
};

static struct strvalmap keymgmt_map[] = {
	{ "none",		G_SUPPLICANT_KEYMGMT_NONE		},
	{ "ieee8021x",		G_SUPPLICANT_KEYMGMT_IEEE8021X	},
	{ "wpa-none",		G_SUPPLICANT_KEYMGMT_WPA_NONE	},
	{ "wpa-psk",		G_SUPPLICANT_KEYMGMT_WPA_PSK	},
	{ "wpa-psk-sha256",	G_SUPPLICANT_KEYMGMT_WPA_PSK_256	},
	{ "wpa-ft-psk",		G_SUPPLICANT_KEYMGMT_WPA_FT_PSK	},
	{ "wpa-ft-eap",		G_SUPPLICANT_KEYMGMT_WPA_FT_EAP	},
	{ "wpa-eap",		G_SUPPLICANT_KEYMGMT_WPA_EAP	},
	{ "wpa-eap-sha256",	G_SUPPLICANT_KEYMGMT_WPA_EAP_256	},
	{ "wps",		G_SUPPLICANT_KEYMGMT_WPS		},
	{ }
};

static struct strvalmap authalg_capa_map[] = {
	{ "open",	G_SUPPLICANT_CAPABILITY_AUTHALG_OPEN	},
	{ "shared",	G_SUPPLICANT_CAPABILITY_AUTHALG_SHARED	},
	{ "leap",	G_SUPPLICANT_CAPABILITY_AUTHALG_LEAP	},
	{ }
};

static struct strvalmap proto_capa_map[] = {
	{ "wpa",	G_SUPPLICANT_CAPABILITY_PROTO_WPA		},
	{ "rsn",	G_SUPPLICANT_CAPABILITY_PROTO_RSN		},
	{ }
};

static struct strvalmap group_map[] = {
	{ "wep40",	G_SUPPLICANT_GROUP_WEP40	},
	{ "wep104",	G_SUPPLICANT_GROUP_WEP104	},
	{ "tkip",	G_SUPPLICANT_GROUP_TKIP	},
	{ "ccmp",	G_SUPPLICANT_GROUP_CCMP	},
	{ }
};

static struct strvalmap pairwise_map[] = {
	{ "none",	G_SUPPLICANT_PAIRWISE_NONE	},
	{ "tkip",	G_SUPPLICANT_PAIRWISE_TKIP	},
	{ "ccmp",	G_SUPPLICANT_PAIRWISE_CCMP	},
	{ }
};

static struct strvalmap scan_capa_map[] = {
	{ "active",	G_SUPPLICANT_CAPABILITY_SCAN_ACTIVE	},
	{ "passive",	G_SUPPLICANT_CAPABILITY_SCAN_PASSIVE	},
	{ "ssid",	G_SUPPLICANT_CAPABILITY_SCAN_SSID		},
	{ }
};

static struct strvalmap mode_capa_map[] = {
	{ "infrastructure",	G_SUPPLICANT_CAPABILITY_MODE_INFRA	},
	{ "ad-hoc",		G_SUPPLICANT_CAPABILITY_MODE_IBSS	},
	{ "ap",			G_SUPPLICANT_CAPABILITY_MODE_AP		},
	{ }
};

static GHashTable *interface_table;
static GHashTable *bss_mapping;
static GHashTable *peer_mapping;
static GHashTable *group_mapping;
static GHashTable *pending_peer_connection;

struct _GSupplicantWpsCredentials {
	unsigned char ssid[32];
	unsigned int ssid_len;
	char *key;
};

struct _GSupplicantInterface {
	char *path;
	char *network_path;
	unsigned int keymgmt_capa;
	unsigned int authalg_capa;
	unsigned int proto_capa;
	unsigned int group_capa;
	unsigned int pairwise_capa;
	unsigned int scan_capa;
	unsigned int mode_capa;
	unsigned int max_scan_ssids;
	bool p2p_support;
	bool p2p_finding;
	bool ap_create_in_progress;
	dbus_bool_t ready;
	GSupplicantState state;
	dbus_bool_t scanning;
	GSupplicantInterfaceCallback scan_callback;
	void *scan_data;
	int apscan;
	char *ifname;
	char *driver;
	char *bridge;
	struct _GSupplicantWpsCredentials wps_cred;
	GSupplicantWpsState wps_state;
	GHashTable *network_table;
	GHashTable *peer_table;
	GHashTable *group_table;
	GHashTable *net_mapping;
	GHashTable *bss_mapping;
	void *data;
	const char *pending_peer_path;
};

struct g_supplicant_bss {
	GSupplicantInterface *interface;
	char *path;
	unsigned char bssid[6];
	unsigned char ssid[32];
	unsigned int ssid_len;
	dbus_uint16_t frequency;
	dbus_uint32_t maxrate;
	dbus_int16_t signal;
	GSupplicantMode mode;
	GSupplicantSecurity security;
	dbus_bool_t rsn_selected;
	unsigned int wpa_keymgmt;
	unsigned int wpa_pairwise;
	unsigned int wpa_group;
	unsigned int rsn_keymgmt;
	unsigned int rsn_pairwise;
	unsigned int rsn_group;
	unsigned int keymgmt;
	dbus_bool_t privacy;
	dbus_bool_t psk;
	dbus_bool_t ieee8021x;
	unsigned int wps_capabilities;
};

struct _GSupplicantNetwork {
	GSupplicantInterface *interface;
	char *path;
	char *group;
	char *name;
	unsigned char ssid[32];
	unsigned int ssid_len;
	dbus_int16_t signal;
	dbus_uint16_t frequency;
	struct g_supplicant_bss *best_bss;
	GSupplicantMode mode;
	GSupplicantSecurity security;
	dbus_bool_t wps;
	unsigned int wps_capabilities;
	GHashTable *bss_table;
	GHashTable *config_table;
};

struct _GSupplicantPeer {
	GSupplicantInterface *interface;
	char *path;
	unsigned char device_address[ETH_ALEN];
	unsigned char iface_address[ETH_ALEN];
	char *name;
	unsigned char *widi_ies;
	int widi_ies_length;
	char *identifier;
	unsigned int wps_capabilities;
	GSList *groups;
	const GSupplicantInterface *current_group_iface;
	bool connection_requested;
};

struct _GSupplicantGroup {
	GSupplicantInterface *interface;
	GSupplicantInterface *orig_interface;
	char *path;
	int role;
	GSList *members;
};

static inline void debug(const char *format, ...)
{
	char str[256];
	va_list ap;

	if (!callbacks_pointer->debug)
		return;

	va_start(ap, format);

	if (vsnprintf(str, sizeof(str), format, ap) > 0)
		callbacks_pointer->debug(str);

	va_end(ap);
}

#define SUPPLICANT_DBG(fmt, arg...) \
	debug("%s:%s() " fmt, __FILE__, __FUNCTION__ , ## arg);

static GSupplicantMode string2mode(const char *mode)
{
	if (!mode)
		return G_SUPPLICANT_MODE_UNKNOWN;

	if (g_str_equal(mode, "infrastructure"))
		return G_SUPPLICANT_MODE_INFRA;
	else if (g_str_equal(mode, "ad-hoc"))
		return G_SUPPLICANT_MODE_IBSS;

	return G_SUPPLICANT_MODE_UNKNOWN;
}

static const char *mode2string(GSupplicantMode mode)
{
	switch (mode) {
	case G_SUPPLICANT_MODE_UNKNOWN:
		break;
	case G_SUPPLICANT_MODE_INFRA:
		return "managed";
	case G_SUPPLICANT_MODE_IBSS:
		return "adhoc";
	case G_SUPPLICANT_MODE_MASTER:
		return "ap";
	}

	return NULL;
}

static const char *security2string(GSupplicantSecurity security)
{
	switch (security) {
	case G_SUPPLICANT_SECURITY_UNKNOWN:
		break;
	case G_SUPPLICANT_SECURITY_NONE:
		return "none";
	case G_SUPPLICANT_SECURITY_WEP:
		return "wep";
	case G_SUPPLICANT_SECURITY_PSK:
		return "psk";
	case G_SUPPLICANT_SECURITY_IEEE8021X:
		return "ieee8021x";
	}

	return NULL;
}

static GSupplicantState string2state(const char *state)
{
	if (!state)
		return G_SUPPLICANT_STATE_UNKNOWN;

	if (g_str_equal(state, "unknown"))
		return G_SUPPLICANT_STATE_UNKNOWN;
	else if (g_str_equal(state, "interface_disabled"))
		return G_SUPPLICANT_STATE_DISABLED;
	else if (g_str_equal(state, "disconnected"))
		return G_SUPPLICANT_STATE_DISCONNECTED;
	else if (g_str_equal(state, "inactive"))
		return G_SUPPLICANT_STATE_INACTIVE;
	else if (g_str_equal(state, "scanning"))
		return G_SUPPLICANT_STATE_SCANNING;
	else if (g_str_equal(state, "authenticating"))
		return G_SUPPLICANT_STATE_AUTHENTICATING;
	else if (g_str_equal(state, "associating"))
		return G_SUPPLICANT_STATE_ASSOCIATING;
	else if (g_str_equal(state, "associated"))
		return G_SUPPLICANT_STATE_ASSOCIATED;
	else if (g_str_equal(state, "group_handshake"))
		return G_SUPPLICANT_STATE_GROUP_HANDSHAKE;
	else if (g_str_equal(state, "4way_handshake"))
		return G_SUPPLICANT_STATE_4WAY_HANDSHAKE;
	else if (g_str_equal(state, "completed"))
		return G_SUPPLICANT_STATE_COMPLETED;

	return G_SUPPLICANT_STATE_UNKNOWN;
}

static void callback_system_ready(void)
{
	if (system_ready)
		return;

	system_ready = TRUE;

	if (!callbacks_pointer)
		return;

	if (!callbacks_pointer->system_ready)
		return;

	callbacks_pointer->system_ready();
}

static void callback_system_killed(void)
{
	system_ready = FALSE;

	if (!callbacks_pointer)
		return;

	if (!callbacks_pointer->system_killed)
		return;

	callbacks_pointer->system_killed();
}

static void callback_interface_added(GSupplicantInterface *interface)
{
	SUPPLICANT_DBG("");

	if (!callbacks_pointer)
		return;

	if (!callbacks_pointer->interface_added)
		return;

	callbacks_pointer->interface_added(interface);
}

static void callback_interface_state(GSupplicantInterface *interface)
{
	if (!callbacks_pointer)
		return;

	if (!callbacks_pointer->interface_state)
		return;

	callbacks_pointer->interface_state(interface);
}

static void callback_interface_removed(GSupplicantInterface *interface)
{
	if (!callbacks_pointer)
		return;

	if (!callbacks_pointer->interface_removed)
		return;

	callbacks_pointer->interface_removed(interface);
}

static void callback_p2p_support(GSupplicantInterface *interface)
{
	SUPPLICANT_DBG("");

    return;

	if (!interface->p2p_support)
		return;

	if (callbacks_pointer && callbacks_pointer->p2p_support)
		callbacks_pointer->p2p_support(interface);
}

static void callback_scan_started(GSupplicantInterface *interface)
{
	if (!callbacks_pointer)
		return;

	if (!callbacks_pointer->scan_started)
		return;

	callbacks_pointer->scan_started(interface);
}

static void callback_ap_create_fail(GSupplicantInterface *interface)
{
	if (!callbacks_pointer)
		return;

	if (!callbacks_pointer->scan_started)
		return;

	callbacks_pointer->ap_create_fail(interface);
}

static void callback_scan_finished(GSupplicantInterface *interface)
{
	if (!callbacks_pointer)
		return;

	if (!callbacks_pointer->scan_finished)
		return;

	callbacks_pointer->scan_finished(interface);
}

static void callback_network_added(GSupplicantNetwork *network)
{
	if (!callbacks_pointer)
		return;

	if (!callbacks_pointer->network_added)
		return;

	callbacks_pointer->network_added(network);
}

static void callback_network_removed(GSupplicantNetwork *network)
{
	if (!callbacks_pointer)
		return;

	if (!callbacks_pointer->network_removed)
		return;

	callbacks_pointer->network_removed(network);
}

static void callback_network_changed(GSupplicantNetwork *network,
					const char *property)
{
	if (!callbacks_pointer)
		return;

	if (!callbacks_pointer->network_changed)
		return;

	callbacks_pointer->network_changed(network, property);
}

static void callback_peer_found(GSupplicantPeer *peer)
{
	if (!callbacks_pointer)
		return;

	if (!callbacks_pointer->peer_found)
		return;

	callbacks_pointer->peer_found(peer);
}

static void callback_peer_lost(GSupplicantPeer *peer)
{
	if (!callbacks_pointer)
		return;

	if (!callbacks_pointer->peer_lost)
		return;

	callbacks_pointer->peer_lost(peer);
}

static void callback_peer_changed(GSupplicantPeer *peer,
						GSupplicantPeerState state)
{
	if (!callbacks_pointer)
		return;

	if (!callbacks_pointer->peer_changed)
		return;

	callbacks_pointer->peer_changed(peer, state);
}

static void callback_peer_request(GSupplicantPeer *peer)
{
	if (!callbacks_pointer)
		return;

	if (!callbacks_pointer->peer_request)
		return;

	peer->connection_requested = true;

	callbacks_pointer->peer_request(peer);
}

static void remove_group(gpointer data)
{
	GSupplicantGroup *group = data;

	if (group->members)
		g_slist_free_full(group->members, g_free);

	g_free(group->path);
	g_free(group);
}

static void remove_interface(gpointer data)
{
	GSupplicantInterface *interface = data;

	g_hash_table_destroy(interface->bss_mapping);
	g_hash_table_destroy(interface->net_mapping);
	g_hash_table_destroy(interface->network_table);
	g_hash_table_destroy(interface->peer_table);
	g_hash_table_destroy(interface->group_table);

	if (interface->scan_callback) {
		SUPPLICANT_DBG("call interface %p callback %p scanning %d",
				interface, interface->scan_callback,
				interface->scanning);

		interface->scan_callback(-EIO, interface, interface->scan_data);
                interface->scan_callback = NULL;
                interface->scan_data = NULL;

		if (interface->scanning) {
			interface->scanning = FALSE;
			callback_scan_finished(interface);
		}
	}

	callback_interface_removed(interface);

	g_free(interface->wps_cred.key);
	g_free(interface->path);
	g_free(interface->network_path);
	g_free(interface->ifname);
	g_free(interface->driver);
	g_free(interface->bridge);
	g_free(interface);
}

static void remove_network(gpointer data)
{
	GSupplicantNetwork *network = data;

	g_hash_table_destroy(network->bss_table);

	callback_network_removed(network);

	g_hash_table_destroy(network->config_table);

	g_free(network->path);
	g_free(network->group);
	g_free(network->name);
	g_free(network);
}

static void remove_bss(gpointer data)
{
	struct g_supplicant_bss *bss = data;

	g_free(bss->path);
	g_free(bss);
}

static void remove_peer(gpointer data)
{
	GSupplicantPeer *peer = data;

	callback_peer_lost(peer);

	if (peer->groups)
		g_slist_free_full(peer->groups, g_free);

	if (peer_mapping)
		g_hash_table_remove(peer_mapping, peer->path);

	if (pending_peer_connection)
		g_hash_table_remove(pending_peer_connection, peer->path);

	g_free(peer->path);
	g_free(peer->name);
	g_free(peer->identifier);

	g_free(peer);
}

static void debug_strvalmap(const char *label, struct strvalmap *map,
							unsigned int val)
{
	int i;

	for (i = 0; map[i].str; i++) {
		if (val & map[i].val)
			SUPPLICANT_DBG("%s: %s", label, map[i].str);
	}
}

static void interface_capability_keymgmt(DBusMessageIter *iter, void *user_data)
{
	GSupplicantInterface *interface = user_data;
	const char *str = NULL;
	int i;

	dbus_message_iter_get_basic(iter, &str);
	if (!str)
		return;

	for (i = 0; keymgmt_map[i].str; i++)
		if (strcmp(str, keymgmt_map[i].str) == 0) {
			interface->keymgmt_capa |= keymgmt_map[i].val;
			break;
		}
}

static void interface_capability_authalg(DBusMessageIter *iter, void *user_data)
{
	GSupplicantInterface *interface = user_data;
	const char *str = NULL;
	int i;

	dbus_message_iter_get_basic(iter, &str);
	if (!str)
		return;

	for (i = 0; authalg_capa_map[i].str; i++)
		if (strcmp(str, authalg_capa_map[i].str) == 0) {
			interface->authalg_capa |= authalg_capa_map[i].val;
			break;
		}
}

static void interface_capability_proto(DBusMessageIter *iter, void *user_data)
{
	GSupplicantInterface *interface = user_data;
	const char *str = NULL;
	int i;

	dbus_message_iter_get_basic(iter, &str);
	if (!str)
		return;

	for (i = 0; proto_capa_map[i].str; i++)
		if (strcmp(str, proto_capa_map[i].str) == 0) {
			interface->proto_capa |= proto_capa_map[i].val;
			break;
		}
}

static void interface_capability_pairwise(DBusMessageIter *iter,
							void *user_data)
{
	GSupplicantInterface *interface = user_data;
	const char *str = NULL;
	int i;

	dbus_message_iter_get_basic(iter, &str);
	if (!str)
		return;

	for (i = 0; pairwise_map[i].str; i++)
		if (strcmp(str, pairwise_map[i].str) == 0) {
			interface->pairwise_capa |= pairwise_map[i].val;
			break;
		}
}

static void interface_capability_group(DBusMessageIter *iter, void *user_data)
{
	GSupplicantInterface *interface = user_data;
	const char *str = NULL;
	int i;

	dbus_message_iter_get_basic(iter, &str);
	if (!str)
		return;

	for (i = 0; group_map[i].str; i++)
		if (strcmp(str, group_map[i].str) == 0) {
			interface->group_capa |= group_map[i].val;
			break;
		}
}

static void interface_capability_scan(DBusMessageIter *iter, void *user_data)
{
	GSupplicantInterface *interface = user_data;
	const char *str = NULL;
	int i;

	dbus_message_iter_get_basic(iter, &str);
	if (!str)
		return;

	for (i = 0; scan_capa_map[i].str; i++)
		if (strcmp(str, scan_capa_map[i].str) == 0) {
			interface->scan_capa |= scan_capa_map[i].val;
			break;
		}
}

static void interface_capability_mode(DBusMessageIter *iter, void *user_data)
{
	GSupplicantInterface *interface = user_data;
	const char *str = NULL;
	int i;

	dbus_message_iter_get_basic(iter, &str);
	if (!str)
		return;

	for (i = 0; mode_capa_map[i].str; i++)
		if (strcmp(str, mode_capa_map[i].str) == 0) {
			interface->mode_capa |= mode_capa_map[i].val;
			break;
		}
}

static void interface_capability(const char *key, DBusMessageIter *iter,
							void *user_data)
{
	GSupplicantInterface *interface = user_data;

	if (!key)
		return;

	if (g_strcmp0(key, "KeyMgmt") == 0)
		supplicant_dbus_array_foreach(iter,
				interface_capability_keymgmt, interface);
	else if (g_strcmp0(key, "AuthAlg") == 0)
		supplicant_dbus_array_foreach(iter,
				interface_capability_authalg, interface);
	else if (g_strcmp0(key, "Protocol") == 0)
		supplicant_dbus_array_foreach(iter,
				interface_capability_proto, interface);
	else if (g_strcmp0(key, "Pairwise") == 0)
		supplicant_dbus_array_foreach(iter,
				interface_capability_pairwise, interface);
	else if (g_strcmp0(key, "Group") == 0)
		supplicant_dbus_array_foreach(iter,
				interface_capability_group, interface);
	else if (g_strcmp0(key, "Scan") == 0)
		supplicant_dbus_array_foreach(iter,
				interface_capability_scan, interface);
	else if (g_strcmp0(key, "Modes") == 0)
		supplicant_dbus_array_foreach(iter,
				interface_capability_mode, interface);
	else if (g_strcmp0(key, "MaxScanSSID") == 0) {
		dbus_int32_t max_scan_ssid;

		dbus_message_iter_get_basic(iter, &max_scan_ssid);
		if (max_scan_ssid < 2)
			max_scan_ssid = 0;
		interface->max_scan_ssids = max_scan_ssid;

	} else
		SUPPLICANT_DBG("key %s type %c",
				key, dbus_message_iter_get_arg_type(iter));
}

struct set_apscan_data
{
	unsigned int ap_scan;
	GSupplicantInterface *interface;
};

static void set_apscan(DBusMessageIter *iter, void *user_data)
{
	struct set_apscan_data *data = user_data;
	unsigned int ap_scan = data->ap_scan;

	dbus_message_iter_append_basic(iter, DBUS_TYPE_UINT32, &ap_scan);
}

static void set_apscan_complete(const char *error,
		DBusMessageIter *iter, void *user_data)
{
	struct set_apscan_data *data = user_data;
	GSupplicantInterface *interface = data->interface;

	if (error) {
		interface->ap_create_in_progress = false;
		SUPPLICANT_DBG("Set AP scan error %s", error);
		goto error;
	}

	interface->ap_create_in_progress = true;
error:
	dbus_free(data);
}

int g_supplicant_interface_set_apscan(GSupplicantInterface *interface,
							unsigned int ap_scan)
{
	struct set_apscan_data *data;
	int ret;

	data = dbus_malloc0(sizeof(*data));

	if (!data)
		return -ENOMEM;

	data->ap_scan = ap_scan;
	data->interface = interface;

	ret = supplicant_dbus_property_set(interface->path,
			SUPPLICANT_INTERFACE ".Interface",
			"ApScan", DBUS_TYPE_UINT32_AS_STRING,
			set_apscan, set_apscan_complete, data, NULL);
	if (ret < 0)
		dbus_free(data);

	return ret;
}

void g_supplicant_interface_set_data(GSupplicantInterface *interface,
								void *data)
{
	if (!interface)
		return;

	interface->data = data;

	if (!data)
		interface->scan_callback = NULL;
}

void *g_supplicant_interface_get_data(GSupplicantInterface *interface)
{
	if (!interface)
		return NULL;

	return interface->data;
}

const char *g_supplicant_interface_get_ifname(GSupplicantInterface *interface)
{
	if (!interface)
		return NULL;

	return interface->ifname;
}

const char *g_supplicant_interface_get_driver(GSupplicantInterface *interface)
{
	if (!interface)
		return NULL;

	return interface->driver;
}

GSupplicantState g_supplicant_interface_get_state(
					GSupplicantInterface *interface)
{
	if (!interface)
		return G_SUPPLICANT_STATE_UNKNOWN;

	return interface->state;
}

const char *g_supplicant_interface_get_wps_key(GSupplicantInterface *interface)
{
	if (!interface)
		return NULL;

	return (const char *)interface->wps_cred.key;
}

const void *g_supplicant_interface_get_wps_ssid(GSupplicantInterface *interface,
							unsigned int *ssid_len)
{
	if (!ssid_len)
		return NULL;

	if (!interface || interface->wps_cred.ssid_len == 0) {
		*ssid_len = 0;
		return NULL;
	}

	*ssid_len = interface->wps_cred.ssid_len;
	return interface->wps_cred.ssid;
}

GSupplicantWpsState g_supplicant_interface_get_wps_state(
					GSupplicantInterface *interface)
{
	if (!interface)
		return G_SUPPLICANT_WPS_STATE_UNKNOWN;

	return interface->wps_state;
}

unsigned int g_supplicant_interface_get_mode(GSupplicantInterface *interface)
{
	if (!interface)
		return 0;

	return interface->mode_capa;
}

unsigned int g_supplicant_interface_get_max_scan_ssids(
				GSupplicantInterface *interface)
{
	if (!interface)
		return 0;

	return interface->max_scan_ssids;
}

static void set_network_enabled(DBusMessageIter *iter, void *user_data)
{
	dbus_bool_t enable = *(dbus_bool_t *)user_data;

	dbus_message_iter_append_basic(iter, DBUS_TYPE_BOOLEAN, &enable);
}

int g_supplicant_interface_enable_selected_network(GSupplicantInterface *interface,
							dbus_bool_t enable)
{
	if (!interface)
		return -1;

	if (!interface->network_path)
		return -1;

	SUPPLICANT_DBG(" ");
	return supplicant_dbus_property_set(interface->network_path,
				SUPPLICANT_INTERFACE ".Network",
				"Enabled", DBUS_TYPE_BOOLEAN_AS_STRING,
				set_network_enabled, NULL, &enable, NULL);
}

dbus_bool_t g_supplicant_interface_get_ready(GSupplicantInterface *interface)
{
	if (!interface)
		return FALSE;

	return interface->ready;
}

GSupplicantInterface *g_supplicant_network_get_interface(
					GSupplicantNetwork *network)
{
	if (!network)
		return NULL;

	return network->interface;
}

const char *g_supplicant_network_get_name(GSupplicantNetwork *network)
{
	if (!network || !network->name)
		return "";

	return network->name;
}

const char *g_supplicant_network_get_identifier(GSupplicantNetwork *network)
{
	if (!network || !network->group)
		return "";

	return network->group;
}

const char *g_supplicant_network_get_path(GSupplicantNetwork *network)
{
	if (!network || !network->path)
		return NULL;

	return network->path;
}

const char *g_supplicant_network_get_mode(GSupplicantNetwork *network)
{
	if (!network)
		return G_SUPPLICANT_MODE_UNKNOWN;

	return mode2string(network->mode);
}

const char *g_supplicant_network_get_security(GSupplicantNetwork *network)
{
	if (!network)
		return G_SUPPLICANT_SECURITY_UNKNOWN;

	return security2string(network->security);
}

const void *g_supplicant_network_get_ssid(GSupplicantNetwork *network,
						unsigned int *ssid_len)
{
	if (!network) {
		*ssid_len = 0;
		return NULL;
	}

	*ssid_len = network->ssid_len;
	return network->ssid;
}

dbus_int16_t g_supplicant_network_get_signal(GSupplicantNetwork *network)
{
	if (!network)
		return 0;

	return network->signal;
}

dbus_uint16_t g_supplicant_network_get_frequency(GSupplicantNetwork *network)
{
	if (!network)
		return 0;

	return network->frequency;
}

dbus_bool_t g_supplicant_network_get_wps(GSupplicantNetwork *network)
{
	if (!network)
		return FALSE;

	return network->wps;
}

dbus_bool_t g_supplicant_network_is_wps_active(GSupplicantNetwork *network)
{
	if (!network)
		return FALSE;

	if (network->wps_capabilities & G_SUPPLICANT_WPS_CONFIGURED)
		return TRUE;

	return FALSE;
}

dbus_bool_t g_supplicant_network_is_wps_pbc(GSupplicantNetwork *network)
{
	if (!network)
		return FALSE;

	if (network->wps_capabilities & G_SUPPLICANT_WPS_PBC)
		return TRUE;

	return FALSE;
}

dbus_bool_t g_supplicant_network_is_wps_advertizing(GSupplicantNetwork *network)
{
	if (!network)
		return FALSE;

	if (network->wps_capabilities & G_SUPPLICANT_WPS_REGISTRAR)
		return TRUE;

	return FALSE;
}

GSupplicantInterface *g_supplicant_peer_get_interface(GSupplicantPeer *peer)
{
	if (!peer)
		return NULL;

	return peer->interface;
}

const char *g_supplicant_peer_get_path(GSupplicantPeer *peer)
{
	if (!peer)
		return NULL;

	return peer->path;
}

const char *g_supplicant_peer_get_identifier(GSupplicantPeer *peer)
{
	if (!peer)
		return NULL;

	return peer->identifier;
}

const void *g_supplicant_peer_get_device_address(GSupplicantPeer *peer)
{
	if (!peer)
		return NULL;

	return peer->device_address;
}

const void *g_supplicant_peer_get_iface_address(GSupplicantPeer *peer)
{
	if (!peer)
		return NULL;

	return peer->iface_address;
}

const char *g_supplicant_peer_get_name(GSupplicantPeer *peer)
{
	if (!peer)
		return NULL;

	return peer->name;
}

const unsigned char *g_supplicant_peer_get_widi_ies(GSupplicantPeer *peer,
								int *length)
{
	if (!peer || !length)
		return NULL;

	*length = peer->widi_ies_length;
	return peer->widi_ies;
}

bool g_supplicant_peer_is_wps_pbc(GSupplicantPeer *peer)
{
	if (!peer)
		return false;

	if (peer->wps_capabilities & G_SUPPLICANT_WPS_PBC)
		return true;

	return false;
}

bool g_supplicant_peer_is_wps_pin(GSupplicantPeer *peer)
{
	if (!peer)
		return false;

	if (peer->wps_capabilities & G_SUPPLICANT_WPS_PIN)
		return true;

	return false;
}

bool g_supplicant_peer_is_in_a_group(GSupplicantPeer *peer)
{
	if (!peer || !peer->groups)
		return false;

	return true;
}

GSupplicantInterface *g_supplicant_peer_get_group_interface(GSupplicantPeer *peer)
{
	if (!peer)
		return NULL;

	return (GSupplicantInterface *) peer->current_group_iface;
}

bool g_supplicant_peer_is_client(GSupplicantPeer *peer)
{
	GSupplicantGroup *group;
	GSList *list;

	if (!peer)
		return false;

	for (list = peer->groups; list; list = list->next) {
		const char *path = list->data;

		group = g_hash_table_lookup(group_mapping, path);
		if (!group)
			continue;

		if (group->role != G_SUPPLICANT_GROUP_ROLE_CLIENT ||
				group->orig_interface != peer->interface)
			continue;

		if (group->interface == peer->current_group_iface)
			return true;
	}

	return false;
}

bool g_supplicant_peer_has_requested_connection(GSupplicantPeer *peer)
{
	if (!peer)
		return false;

	return peer->connection_requested;
}

static void merge_network(GSupplicantNetwork *network)
{
	GString *str;
	const char *ssid, *mode, *key_mgmt;
	unsigned int i, ssid_len;
	char *group;

	ssid = g_hash_table_lookup(network->config_table, "ssid");
	mode = g_hash_table_lookup(network->config_table, "mode");
	key_mgmt = g_hash_table_lookup(network->config_table, "key_mgmt");

	SUPPLICANT_DBG("ssid %s mode %s", ssid, mode);

	if (ssid)
		ssid_len = strlen(ssid);
	else
		ssid_len = 0;

	str = g_string_sized_new((ssid_len * 2) + 24);
	if (!str)
		return;

	for (i = 0; i < ssid_len; i++)
		g_string_append_printf(str, "%02x", ssid[i]);

	if (g_strcmp0(mode, "0") == 0)
		g_string_append_printf(str, "_managed");
	else if (g_strcmp0(mode, "1") == 0)
		g_string_append_printf(str, "_adhoc");

	if (g_strcmp0(key_mgmt, "WPA-PSK") == 0)
		g_string_append_printf(str, "_psk");

	group = g_string_free(str, FALSE);

	SUPPLICANT_DBG("%s", group);

	g_free(group);

	g_hash_table_destroy(network->config_table);

	g_free(network->path);
	g_free(network);
}

static void network_property(const char *key, DBusMessageIter *iter,
							void *user_data)
{
	GSupplicantNetwork *network = user_data;

	if (!network->interface)
		return;

	if (!key) {
		merge_network(network);
		return;
	}

	if (g_strcmp0(key, "Enabled") == 0) {
		dbus_bool_t enabled = FALSE;

		dbus_message_iter_get_basic(iter, &enabled);
	} else if (dbus_message_iter_get_arg_type(iter) == DBUS_TYPE_STRING) {
		const char *str = NULL;

		dbus_message_iter_get_basic(iter, &str);
		if (str) {
			g_hash_table_replace(network->config_table,
						g_strdup(key), g_strdup(str));
		}
	} else
		SUPPLICANT_DBG("key %s type %c",
				key, dbus_message_iter_get_arg_type(iter));
}

static void interface_network_added(DBusMessageIter *iter, void *user_data)
{
	GSupplicantInterface *interface = user_data;
	GSupplicantNetwork *network;
	const char *path = NULL;

	SUPPLICANT_DBG("");

	dbus_message_iter_get_basic(iter, &path);
	if (!path)
		return;

	if (g_strcmp0(path, "/") == 0)
		return;

	network = g_hash_table_lookup(interface->net_mapping, path);
	if (network)
		return;

	network = g_try_new0(GSupplicantNetwork, 1);
	if (!network)
		return;

	network->interface = interface;
	network->path = g_strdup(path);

	network->config_table = g_hash_table_new_full(g_str_hash, g_str_equal,
							g_free, g_free);

	dbus_message_iter_next(iter);
	if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_INVALID) {
		supplicant_dbus_property_foreach(iter, network_property,
								network);
		network_property(NULL, NULL, network);
		return;
	}

	supplicant_dbus_property_get_all(path,
				SUPPLICANT_INTERFACE ".Network",
					network_property, network, NULL);
}

static void interface_network_removed(DBusMessageIter *iter, void *user_data)
{
	GSupplicantInterface *interface = user_data;
	GSupplicantNetwork *network;
	const char *path = NULL;

	dbus_message_iter_get_basic(iter, &path);
	if (!path)
		return;

	network = g_hash_table_lookup(interface->net_mapping, path);
	if (!network)
		return;

	g_hash_table_remove(interface->net_mapping, path);
}

static char *create_name(unsigned char *ssid, int ssid_len)
{
	GString *string;
	const gchar *remainder, *invalid;
	int valid_bytes, remaining_bytes;

	if (ssid_len < 1 || ssid[0] == '\0')
		return g_strdup("");

	string = NULL;
	remainder = (const gchar *)ssid;
	remaining_bytes = ssid_len;

	while (remaining_bytes != 0) {
		if (g_utf8_validate(remainder, remaining_bytes,
					&invalid)) {
			break;
		}

		valid_bytes = invalid - remainder;

		if (!string)
			string = g_string_sized_new(remaining_bytes);

		g_string_append_len(string, remainder, valid_bytes);

		/* append U+FFFD REPLACEMENT CHARACTER */
		g_string_append(string, "\357\277\275");

		remaining_bytes -= valid_bytes + 1;
		remainder = invalid + 1;
	}

	if (!string)
		return g_strndup((const gchar *)ssid, ssid_len + 1);

	g_string_append(string, remainder);

	return g_string_free(string, FALSE);
}

static char *create_group(struct g_supplicant_bss *bss)
{
	GString *str;
	unsigned int i;
	const char *mode, *security;

	str = g_string_sized_new((bss->ssid_len * 2) + 24);
	if (!str)
		return NULL;

	if (bss->ssid_len > 0 && bss->ssid[0] != '\0') {
		for (i = 0; i < bss->ssid_len; i++)
			g_string_append_printf(str, "%02x", bss->ssid[i]);
	} else
		g_string_append_printf(str, "hidden");

	mode = mode2string(bss->mode);
	if (mode)
		g_string_append_printf(str, "_%s", mode);

	security = security2string(bss->security);
	if (security)
		g_string_append_printf(str, "_%s", security);

	return g_string_free(str, FALSE);
}

static void add_or_replace_bss_to_network(struct g_supplicant_bss *bss)
{
	GSupplicantInterface *interface = bss->interface;
	GSupplicantNetwork *network;
	char *group;

	group = create_group(bss);
	SUPPLICANT_DBG("New group created: %s", group);

	if (!group)
		return;

	network = g_hash_table_lookup(interface->network_table, group);
	if (network) {
		g_free(group);
		SUPPLICANT_DBG("Network %s already exist", network->name);

		goto done;
	}

	network = g_try_new0(GSupplicantNetwork, 1);
	if (!network) {
		g_free(group);
		return;
	}

	network->interface = interface;
	if (!network->path)
		network->path = g_strdup(bss->path);
	network->group = group;
	network->name = create_name(bss->ssid, bss->ssid_len);
	network->mode = bss->mode;
	network->security = bss->security;
	network->ssid_len = bss->ssid_len;
	memcpy(network->ssid, bss->ssid, bss->ssid_len);
	network->signal = bss->signal;
	network->frequency = bss->frequency;
	network->best_bss = bss;

	SUPPLICANT_DBG("New network %s created", network->name);

	network->bss_table = g_hash_table_new_full(g_str_hash, g_str_equal,
							NULL, remove_bss);

	network->config_table = g_hash_table_new_full(g_str_hash, g_str_equal,
							g_free, g_free);

	g_hash_table_replace(interface->network_table,
						network->group, network);

	callback_network_added(network);

done:
	/* We update network's WPS properties if only bss provides WPS. */
	if ((bss->keymgmt & G_SUPPLICANT_KEYMGMT_WPS) != 0) {
		network->wps = TRUE;
		network->wps_capabilities |= bss->wps_capabilities;
	}

	if (bss->signal > network->signal) {
		network->signal = bss->signal;
		network->best_bss = bss;
		callback_network_changed(network, "Signal");
	}

	g_hash_table_replace(interface->bss_mapping, bss->path, network);
	g_hash_table_replace(network->bss_table, bss->path, bss);

	g_hash_table_replace(bss_mapping, bss->path, interface);
}

static void bss_rates(DBusMessageIter *iter, void *user_data)
{
	struct g_supplicant_bss *bss = user_data;
	dbus_uint32_t rate = 0;

	dbus_message_iter_get_basic(iter, &rate);
	if (rate == 0)
		return;

	if (rate > bss->maxrate)
		bss->maxrate = rate;
}

static void bss_keymgmt(DBusMessageIter *iter, void *user_data)
{
	unsigned int *keymgmt = user_data;
	const char *str = NULL;
	int i;

	dbus_message_iter_get_basic(iter, &str);
	if (!str)
		return;

	for (i = 0; keymgmt_map[i].str; i++)
		if (strcmp(str, keymgmt_map[i].str) == 0) {
			SUPPLICANT_DBG("Keymgmt: %s", str);
			*keymgmt |= keymgmt_map[i].val;
			break;
		}
}

static void bss_group(DBusMessageIter *iter, void *user_data)
{
	unsigned int *group = user_data;
	const char *str = NULL;
	int i;

	dbus_message_iter_get_basic(iter, &str);
	if (!str)
		return;

	for (i = 0; group_map[i].str; i++)
		if (strcmp(str, group_map[i].str) == 0) {
			SUPPLICANT_DBG("Group: %s", str);
			*group |= group_map[i].val;
			break;
		}
}

static void bss_pairwise(DBusMessageIter *iter, void *user_data)
{
	unsigned int *pairwise = user_data;
	const char *str = NULL;
	int i;

	dbus_message_iter_get_basic(iter, &str);
	if (!str)
		return;

	for (i = 0; pairwise_map[i].str; i++)
		if (strcmp(str, pairwise_map[i].str) == 0) {
			SUPPLICANT_DBG("Pairwise: %s", str);
			*pairwise |= pairwise_map[i].val;
			break;
		}
}

static void bss_wpa(const char *key, DBusMessageIter *iter,
			void *user_data)
{
	struct g_supplicant_bss *bss = user_data;
	unsigned int value = 0;

	SUPPLICANT_DBG("Key: %s", key);

	if (g_strcmp0(key, "KeyMgmt") == 0) {
		supplicant_dbus_array_foreach(iter, bss_keymgmt, &value);

		if (bss->rsn_selected)
			bss->rsn_keymgmt = value;
		else
			bss->wpa_keymgmt = value;
	} else if (g_strcmp0(key, "Group") == 0) {
		supplicant_dbus_array_foreach(iter, bss_group, &value);

		if (bss->rsn_selected)
			bss->rsn_group = value;
		else
			bss->wpa_group = value;
	} else if (g_strcmp0(key, "Pairwise") == 0) {
		supplicant_dbus_array_foreach(iter, bss_pairwise, &value);

		if (bss->rsn_selected)
			bss->rsn_pairwise = value;
		else
			bss->wpa_pairwise = value;
	}
}

static unsigned int get_tlv(unsigned char *ie, unsigned int ie_size,
							unsigned int type)
{
	unsigned int len = 0;

	while (len + 4 < ie_size) {
		unsigned int hi = ie[len];
		unsigned int lo = ie[len + 1];
		unsigned int tmp_type = (hi << 8) + lo;
		unsigned int v_len = 0;

		/* hi and lo are used to recreate an unsigned int
		 * based on 2 8bits length unsigned int. */

		hi = ie[len + 2];
		lo = ie[len + 3];
		v_len = (hi << 8) + lo;

		if (tmp_type == type) {
			unsigned int ret_value = 0;
			unsigned char *value = (unsigned char *)&ret_value;

			SUPPLICANT_DBG("IE: match type 0x%x", type);

			/* Verifying length relevance */
			if (v_len > sizeof(unsigned int) ||
				len + 4 + v_len > ie_size)
				break;

			memcpy(value, ie + len + 4, v_len);

			SUPPLICANT_DBG("returning 0x%x", ret_value);
			return ret_value;
		}

		len += v_len + 4;
	}

	SUPPLICANT_DBG("returning 0");
	return 0;
}

static void bss_process_ies(DBusMessageIter *iter, void *user_data)
{
	struct g_supplicant_bss *bss = user_data;
	const unsigned char WPS_OUI[] = { 0x00, 0x50, 0xf2, 0x04 };
	unsigned char *ie, *ie_end;
	DBusMessageIter array;
	unsigned int value;
	int ie_len;

#define WMM_WPA1_WPS_INFO 221
#define WPS_INFO_MIN_LEN  6
#define WPS_VERSION_TLV   0x104A
#define WPS_STATE_TLV     0x1044
#define WPS_METHODS_TLV   0x1012
#define WPS_REGISTRAR_TLV 0x1041
#define WPS_VERSION       0x10
#define WPS_PBC           0x04
#define WPS_PIN           0x00
#define WPS_CONFIGURED    0x02

	dbus_message_iter_recurse(iter, &array);
	dbus_message_iter_get_fixed_array(&array, &ie, &ie_len);

	if (!ie || ie_len < 2)
		return;

	bss->wps_capabilities = 0;
	bss->keymgmt = 0;

	for (ie_end = ie + ie_len; ie < ie_end && ie + ie[1] + 1 <= ie_end;
							ie += ie[1] + 2) {

		if (ie[0] != WMM_WPA1_WPS_INFO || ie[1] < WPS_INFO_MIN_LEN ||
			memcmp(ie+2, WPS_OUI, sizeof(WPS_OUI)) != 0)
			continue;

		SUPPLICANT_DBG("IE: match WPS_OUI");

		value = get_tlv(&ie[6], ie[1], WPS_STATE_TLV);
		if (get_tlv(&ie[6], ie[1], WPS_VERSION_TLV) == WPS_VERSION &&
								value != 0) {
			bss->keymgmt |= G_SUPPLICANT_KEYMGMT_WPS;

			if (value == WPS_CONFIGURED)
				bss->wps_capabilities |=
					G_SUPPLICANT_WPS_CONFIGURED;
		}

		value = get_tlv(&ie[6], ie[1], WPS_METHODS_TLV);
		if (value != 0) {
			if (GUINT16_FROM_BE(value) == WPS_PBC)
				bss->wps_capabilities |= G_SUPPLICANT_WPS_PBC;
			if (GUINT16_FROM_BE(value) == WPS_PIN)
				bss->wps_capabilities |= G_SUPPLICANT_WPS_PIN;
		} else
			bss->wps_capabilities |=
				G_SUPPLICANT_WPS_PBC | G_SUPPLICANT_WPS_PIN;

		/* If the AP sends this it means it's advertizing
		 * as a registrar and the WPS process is launched
		 * on its side */
		if (get_tlv(&ie[6], ie[1], WPS_REGISTRAR_TLV) != 0)
			bss->wps_capabilities |= G_SUPPLICANT_WPS_REGISTRAR;

		SUPPLICANT_DBG("WPS Methods 0x%x", bss->wps_capabilities);
	}
}

static void bss_compute_security(struct g_supplicant_bss *bss)
{
	/*
	 * Combining RSN and WPA keymgmt
	 * We combine it since parsing IEs might have set something for WPS. */
	bss->keymgmt |= bss->rsn_keymgmt | bss->wpa_keymgmt;

	bss->ieee8021x = FALSE;
	bss->psk = FALSE;

	if (bss->keymgmt &
			(G_SUPPLICANT_KEYMGMT_WPA_EAP |
				G_SUPPLICANT_KEYMGMT_WPA_FT_EAP |
				G_SUPPLICANT_KEYMGMT_WPA_EAP_256))
		bss->ieee8021x = TRUE;

	if (bss->keymgmt &
			(G_SUPPLICANT_KEYMGMT_WPA_PSK |
				G_SUPPLICANT_KEYMGMT_WPA_FT_PSK |
				G_SUPPLICANT_KEYMGMT_WPA_PSK_256))
		bss->psk = TRUE;

	if (bss->ieee8021x)
		bss->security = G_SUPPLICANT_SECURITY_IEEE8021X;
	else if (bss->psk)
		bss->security = G_SUPPLICANT_SECURITY_PSK;
	else if (bss->privacy)
		bss->security = G_SUPPLICANT_SECURITY_WEP;
	else
		bss->security = G_SUPPLICANT_SECURITY_NONE;
}


static void bss_property(const char *key, DBusMessageIter *iter,
							void *user_data)
{
	struct g_supplicant_bss *bss = user_data;

	if (!bss->interface)
		return;

	SUPPLICANT_DBG("key %s", key);

	if (!key)
		return;

	if (g_strcmp0(key, "BSSID") == 0) {
		DBusMessageIter array;
		unsigned char *addr;
		int addr_len;

		dbus_message_iter_recurse(iter, &array);
		dbus_message_iter_get_fixed_array(&array, &addr, &addr_len);

		if (addr_len == 6)
			memcpy(bss->bssid, addr, addr_len);
	} else if (g_strcmp0(key, "SSID") == 0) {
		DBusMessageIter array;
		unsigned char *ssid;
		int ssid_len;

		dbus_message_iter_recurse(iter, &array);
		dbus_message_iter_get_fixed_array(&array, &ssid, &ssid_len);

		if (ssid_len > 0 && ssid_len < 33) {
			memcpy(bss->ssid, ssid, ssid_len);
			bss->ssid_len = ssid_len;
		} else {
			memset(bss->ssid, 0, sizeof(bss->ssid));
			bss->ssid_len = 0;
		}
	} else if (g_strcmp0(key, "Capabilities") == 0) {
		dbus_uint16_t capabilities = 0x0000;

		dbus_message_iter_get_basic(iter, &capabilities);

		if (capabilities & IEEE80211_CAP_ESS)
			bss->mode = G_SUPPLICANT_MODE_INFRA;
		else if (capabilities & IEEE80211_CAP_IBSS)
			bss->mode = G_SUPPLICANT_MODE_IBSS;

		if (capabilities & IEEE80211_CAP_PRIVACY)
			bss->privacy = TRUE;
	} else if (g_strcmp0(key, "Mode") == 0) {
		const char *mode = NULL;

		dbus_message_iter_get_basic(iter, &mode);
		bss->mode = string2mode(mode);
	} else if (g_strcmp0(key, "Frequency") == 0) {
		dbus_uint16_t frequency = 0;

		dbus_message_iter_get_basic(iter, &frequency);
		bss->frequency = frequency;
	} else if (g_strcmp0(key, "Signal") == 0) {
		dbus_int16_t signal = 0;

		dbus_message_iter_get_basic(iter, &signal);

		bss->signal = signal;
		if (!bss->signal)
			bss->signal = BSS_UNKNOWN_STRENGTH;

	} else if (g_strcmp0(key, "Level") == 0) {
		dbus_int32_t level = 0;

		dbus_message_iter_get_basic(iter, &level);
	} else if (g_strcmp0(key, "Rates") == 0) {
		supplicant_dbus_array_foreach(iter, bss_rates, bss);
	} else if (g_strcmp0(key, "MaxRate") == 0) {
		dbus_uint32_t maxrate = 0;

		dbus_message_iter_get_basic(iter, &maxrate);
		if (maxrate != 0)
			bss->maxrate = maxrate;
	} else if (g_strcmp0(key, "Privacy") == 0) {
		dbus_bool_t privacy = FALSE;

		dbus_message_iter_get_basic(iter, &privacy);
		bss->privacy = privacy;
	} else if (g_strcmp0(key, "RSN") == 0) {
		bss->rsn_selected = TRUE;

		supplicant_dbus_property_foreach(iter, bss_wpa, bss);
	} else if (g_strcmp0(key, "WPA") == 0) {
		bss->rsn_selected = FALSE;

		supplicant_dbus_property_foreach(iter, bss_wpa, bss);
	} else if (g_strcmp0(key, "IEs") == 0)
		bss_process_ies(iter, bss);
	else
		SUPPLICANT_DBG("key %s type %c",
				key, dbus_message_iter_get_arg_type(iter));
}

static struct g_supplicant_bss *interface_bss_added(DBusMessageIter *iter,
							void *user_data)
{
	GSupplicantInterface *interface = user_data;
	GSupplicantNetwork *network;
	struct g_supplicant_bss *bss;
	const char *path = NULL;

	SUPPLICANT_DBG("");

	dbus_message_iter_get_basic(iter, &path);
	if (!path)
		return NULL;

	if (g_strcmp0(path, "/") == 0)
		return NULL;

	SUPPLICANT_DBG("%s", path);

	network = g_hash_table_lookup(interface->bss_mapping, path);
	if (network) {
		bss = g_hash_table_lookup(network->bss_table, path);
		if (bss)
			return NULL;
	}

	bss = g_try_new0(struct g_supplicant_bss, 1);
	if (!bss)
		return NULL;

	bss->interface = interface;
	bss->path = g_strdup(path);
	bss->signal = BSS_UNKNOWN_STRENGTH;

	return bss;
}

static void interface_bss_added_with_keys(DBusMessageIter *iter,
						void *user_data)
{
	struct g_supplicant_bss *bss;

	SUPPLICANT_DBG("");

	bss = interface_bss_added(iter, user_data);
	if (!bss)
		return;

	dbus_message_iter_next(iter);

	if (dbus_message_iter_get_arg_type(iter) == DBUS_TYPE_INVALID)
		return;

	supplicant_dbus_property_foreach(iter, bss_property, bss);

	bss_compute_security(bss);
	add_or_replace_bss_to_network(bss);
}

static void interface_bss_added_without_keys(DBusMessageIter *iter,
						void *user_data)
{
	struct g_supplicant_bss *bss;

	SUPPLICANT_DBG("");

	bss = interface_bss_added(iter, user_data);
	if (!bss)
		return;

	supplicant_dbus_property_get_all(bss->path,
					SUPPLICANT_INTERFACE ".BSS",
					bss_property, bss, NULL);

	bss_compute_security(bss);
	add_or_replace_bss_to_network(bss);
}

static void update_signal(gpointer key, gpointer value,
						gpointer user_data)
{
	struct g_supplicant_bss *bss = value;
	GSupplicantNetwork *network = user_data;

	if (bss->signal > network->signal) {
		network->signal = bss->signal;
		network->best_bss = bss;
	}
}

static void update_network_signal(GSupplicantNetwork *network)
{
	if (g_hash_table_size(network->bss_table) <= 1 && network->best_bss)
		return;

	g_hash_table_foreach(network->bss_table,
				update_signal, network);

	SUPPLICANT_DBG("New network signal %d", network->signal);
}

static void interface_bss_removed(DBusMessageIter *iter, void *user_data)
{
	GSupplicantInterface *interface = user_data;
	GSupplicantNetwork *network;
	struct g_supplicant_bss *bss = NULL;
	const char *path = NULL;

	dbus_message_iter_get_basic(iter, &path);
	if (!path)
		return;

	network = g_hash_table_lookup(interface->bss_mapping, path);
	if (!network)
		return;

	bss = g_hash_table_lookup(network->bss_table, path);
	if (network->best_bss == bss) {
		network->best_bss = NULL;
		network->signal = BSS_UNKNOWN_STRENGTH;
	}

	g_hash_table_remove(bss_mapping, path);

	g_hash_table_remove(interface->bss_mapping, path);
	g_hash_table_remove(network->bss_table, path);

	update_network_signal(network);

	if (g_hash_table_size(network->bss_table) == 0)
		g_hash_table_remove(interface->network_table, network->group);
}

static void set_config_methods(DBusMessageIter *iter, void *user_data)
{
	const char *config_methods = "push_button";

	dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING,
							&config_methods);
}

static void interface_property(const char *key, DBusMessageIter *iter,
							void *user_data)
{
	GSupplicantInterface *interface = user_data;

	if (!interface)
		return;

	SUPPLICANT_DBG("%s", key);

	if (!key) {
		debug_strvalmap("KeyMgmt capability", keymgmt_map,
						interface->keymgmt_capa);
		debug_strvalmap("AuthAlg capability", authalg_capa_map,
						interface->authalg_capa);
		debug_strvalmap("Protocol capability", proto_capa_map,
						interface->proto_capa);
		debug_strvalmap("Pairwise capability", pairwise_map,
						interface->pairwise_capa);
		debug_strvalmap("Group capability", group_map,
						interface->group_capa);
		debug_strvalmap("Scan capability", scan_capa_map,
						interface->scan_capa);
		debug_strvalmap("Mode capability", mode_capa_map,
						interface->mode_capa);


		supplicant_dbus_property_set(interface->path,
				SUPPLICANT_INTERFACE ".Interface.WPS",
				"ConfigMethods", DBUS_TYPE_STRING_AS_STRING,
				set_config_methods, NULL, NULL, NULL);

		if (interface->ready)
			callback_interface_added(interface);

		return;
	}

	if (g_strcmp0(key, "Capabilities") == 0) {
		supplicant_dbus_property_foreach(iter, interface_capability,
								interface);
		if (interface->mode_capa & G_SUPPLICANT_CAPABILITY_MODE_P2P)
			interface->p2p_support = true;
	} else if (g_strcmp0(key, "State") == 0) {
		const char *str = NULL;

		dbus_message_iter_get_basic(iter, &str);
		if (str)
			if (string2state(str) != interface->state) {
				interface->state = string2state(str);
				callback_interface_state(interface);
			}

		if (interface->ap_create_in_progress) {
			if (interface->state == G_SUPPLICANT_STATE_DISCONNECTED)
				callback_ap_create_fail(interface);

			interface->ap_create_in_progress = false;
		}

		if (interface->state == G_SUPPLICANT_STATE_DISABLED)
			interface->ready = FALSE;
		else
			interface->ready = TRUE;

		SUPPLICANT_DBG("state %s (%d)", str, interface->state);
	} else if (g_strcmp0(key, "Scanning") == 0) {
		dbus_bool_t scanning = FALSE;

		dbus_message_iter_get_basic(iter, &scanning);
		interface->scanning = scanning;

		if (interface->ready) {
			if (interface->scanning)
				callback_scan_started(interface);
			else
				callback_scan_finished(interface);
		}
	} else if (g_strcmp0(key, "ApScan") == 0) {
		int apscan = 1;

		dbus_message_iter_get_basic(iter, &apscan);
		interface->apscan = apscan;
	} else if (g_strcmp0(key, "Ifname") == 0) {
		const char *str = NULL;

		dbus_message_iter_get_basic(iter, &str);
		if (str) {
			g_free(interface->ifname);
			interface->ifname = g_strdup(str);
		}
	} else if (g_strcmp0(key, "Driver") == 0) {
		const char *str = NULL;

		dbus_message_iter_get_basic(iter, &str);
		if (str) {
			g_free(interface->driver);
			interface->driver = g_strdup(str);
		}
	} else if (g_strcmp0(key, "BridgeIfname") == 0) {
		const char *str = NULL;

		dbus_message_iter_get_basic(iter, &str);
		if (str) {
			g_free(interface->bridge);
			interface->bridge = g_strdup(str);
		}
	} else if (g_strcmp0(key, "CurrentBSS") == 0) {
		interface_bss_added_without_keys(iter, interface);
	} else if (g_strcmp0(key, "CurrentNetwork") == 0) {
		interface_network_added(iter, interface);
	} else if (g_strcmp0(key, "BSSs") == 0) {
		supplicant_dbus_array_foreach(iter,
					interface_bss_added_without_keys,
					interface);
	} else if (g_strcmp0(key, "Blobs") == 0) {
		/* Nothing */
	} else if (g_strcmp0(key, "Networks") == 0) {
		supplicant_dbus_array_foreach(iter, interface_network_added,
								interface);
	} else
		SUPPLICANT_DBG("key %s type %c",
				key, dbus_message_iter_get_arg_type(iter));
}

static void scan_network_update(DBusMessageIter *iter, void *user_data)
{
	GSupplicantInterface *interface = user_data;
	GSupplicantNetwork *network;
	char *path;

	if (!iter)
		return;

	dbus_message_iter_get_basic(iter, &path);

	if (!path)
		return;

	if (g_strcmp0(path, "/") == 0)
		return;

	/* Update the network details based on scan BSS data */
	network = g_hash_table_lookup(interface->bss_mapping, path);
	if (network)
		callback_network_added(network);
}

static void scan_bss_data(const char *key, DBusMessageIter *iter,
				void *user_data)
{
	GSupplicantInterface *interface = user_data;

	if (iter)
		supplicant_dbus_array_foreach(iter, scan_network_update,
						interface);

	if (interface->scan_callback)
		interface->scan_callback(0, interface, interface->scan_data);

	interface->scan_callback = NULL;
	interface->scan_data = NULL;
}

static GSupplicantInterface *interface_alloc(const char *path)
{
	GSupplicantInterface *interface;

	interface = g_try_new0(GSupplicantInterface, 1);
	if (!interface)
		return NULL;

	interface->path = g_strdup(path);

	interface->network_table = g_hash_table_new_full(g_str_hash,
					g_str_equal, NULL, remove_network);
	interface->peer_table = g_hash_table_new_full(g_str_hash,
					g_str_equal, NULL, remove_peer);
	interface->group_table = g_hash_table_new_full(g_str_hash,
					g_str_equal, NULL, remove_group);
	interface->net_mapping = g_hash_table_new_full(g_str_hash, g_str_equal,
								NULL, NULL);
	interface->bss_mapping = g_hash_table_new_full(g_str_hash, g_str_equal,
								NULL, NULL);

	g_hash_table_replace(interface_table, interface->path, interface);

	return interface;
}

static void interface_added(DBusMessageIter *iter, void *user_data)
{
	GSupplicantInterface *interface;
	const char *path = NULL;

	SUPPLICANT_DBG("");

	dbus_message_iter_get_basic(iter, &path);
	if (!path)
		return;

	if (g_strcmp0(path, "/") == 0)
		return;

	interface = g_hash_table_lookup(interface_table, path);
	if (interface)
		return;

	interface = interface_alloc(path);
	if (!interface)
		return;

	dbus_message_iter_next(iter);
	if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_INVALID) {
		supplicant_dbus_property_foreach(iter, interface_property,
								interface);
		interface_property(NULL, NULL, interface);
		return;
	}

	supplicant_dbus_property_get_all(path,
					SUPPLICANT_INTERFACE ".Interface",
					interface_property, interface,
					interface);
}

static void interface_removed(DBusMessageIter *iter, void *user_data)
{
	const char *path = NULL;
	GSupplicantInterface *interface = user_data;

	dbus_message_iter_get_basic(iter, &path);
	if (!path)
		return;

	interface = g_hash_table_lookup(interface_table, path);
	g_supplicant_interface_cancel(interface);

	g_hash_table_remove(interface_table, path);
}

static void eap_method(DBusMessageIter *iter, void *user_data)
{
	const char *str = NULL;
	int i;

	dbus_message_iter_get_basic(iter, &str);
	if (!str)
		return;

	for (i = 0; eap_method_map[i].str; i++)
		if (strcmp(str, eap_method_map[i].str) == 0) {
			eap_methods |= eap_method_map[i].val;
			break;
		}
}

static void service_property(const char *key, DBusMessageIter *iter,
							void *user_data)
{
	if (!key) {
		callback_system_ready();
		return;
	}

	if (g_strcmp0(key, "DebugLevel") == 0) {
		const char *str = NULL;
		int i;

		dbus_message_iter_get_basic(iter, &str);
		for (i = 0; debug_strings[i]; i++)
			if (g_strcmp0(debug_strings[i], str) == 0) {
				debug_level = i;
				break;
			}
		SUPPLICANT_DBG("Debug level %d", debug_level);
	} else if (g_strcmp0(key, "DebugTimestamp") == 0) {
		dbus_message_iter_get_basic(iter, &debug_timestamp);
		SUPPLICANT_DBG("Debug timestamp %u", debug_timestamp);
	} else if (g_strcmp0(key, "DebugShowKeys") == 0) {
		dbus_message_iter_get_basic(iter, &debug_showkeys);
		SUPPLICANT_DBG("Debug show keys %u", debug_showkeys);
	} else if (g_strcmp0(key, "Interfaces") == 0) {
		supplicant_dbus_array_foreach(iter, interface_added, NULL);
	} else if (g_strcmp0(key, "EapMethods") == 0) {
		supplicant_dbus_array_foreach(iter, eap_method, NULL);
		debug_strvalmap("EAP method", eap_method_map, eap_methods);
	} else if (g_strcmp0(key, "Country") == 0) {
		const char *country = NULL;

		dbus_message_iter_get_basic(iter, &country);
		SUPPLICANT_DBG("Country %s", country);
	} else
		SUPPLICANT_DBG("key %s type %c",
				key, dbus_message_iter_get_arg_type(iter));
}

static void signal_name_owner_changed(const char *path, DBusMessageIter *iter)
{
	const char *name = NULL, *old = NULL, *new = NULL;

	SUPPLICANT_DBG("");

	if (g_strcmp0(path, DBUS_PATH_DBUS) != 0)
		return;

	dbus_message_iter_get_basic(iter, &name);
	if (!name)
		return;

	if (g_strcmp0(name, SUPPLICANT_SERVICE) != 0)
		return;

	dbus_message_iter_next(iter);
	dbus_message_iter_get_basic(iter, &old);
	dbus_message_iter_next(iter);
	dbus_message_iter_get_basic(iter, &new);

	if (!old || !new)
		return;

	if (strlen(old) > 0 && strlen(new) == 0) {
		system_available = FALSE;
		g_hash_table_remove_all(bss_mapping);
		g_hash_table_remove_all(peer_mapping);
		g_hash_table_remove_all(group_mapping);
		g_hash_table_remove_all(interface_table);
		callback_system_killed();
	}

	if (strlen(new) > 0 && strlen(old) == 0) {
		system_available = TRUE;
		supplicant_dbus_property_get_all(SUPPLICANT_PATH,
						SUPPLICANT_INTERFACE,
						service_property, NULL, NULL);
	}
}

static void signal_properties_changed(const char *path, DBusMessageIter *iter)
{
	SUPPLICANT_DBG("");

	if (g_strcmp0(path, SUPPLICANT_PATH) != 0)
		return;

	supplicant_dbus_property_foreach(iter, service_property, NULL);
}

static void signal_interface_added(const char *path, DBusMessageIter *iter)
{
	SUPPLICANT_DBG("path %s %s", path, SUPPLICANT_PATH);

	if (g_strcmp0(path, SUPPLICANT_PATH) == 0)
		interface_added(iter, NULL);
}

static void signal_interface_removed(const char *path, DBusMessageIter *iter)
{
	SUPPLICANT_DBG("");

	if (g_strcmp0(path, SUPPLICANT_PATH) == 0)
		interface_removed(iter, NULL);
}

static void signal_interface_changed(const char *path, DBusMessageIter *iter)
{
	GSupplicantInterface *interface;

	SUPPLICANT_DBG("");

	interface = g_hash_table_lookup(interface_table, path);
	if (!interface)
		return;

	supplicant_dbus_property_foreach(iter, interface_property, interface);
}

static void signal_scan_done(const char *path, DBusMessageIter *iter)
{
	GSupplicantInterface *interface;
	dbus_bool_t success = FALSE;

	SUPPLICANT_DBG("");

	interface = g_hash_table_lookup(interface_table, path);
	if (!interface)
		return;

	dbus_message_iter_get_basic(iter, &success);

	if (interface->scanning) {
		callback_scan_finished(interface);
		interface->scanning = FALSE;
	}

	/*
	 * If scan is unsuccessful return -EIO else get the scanned BSSs
	 * and update the network details accordingly
	 */
	if (!success) {
		if (interface->scan_callback)
			interface->scan_callback(-EIO, interface,
						interface->scan_data);

		interface->scan_callback = NULL;
		interface->scan_data = NULL;

		return;
	}

	supplicant_dbus_property_get(path, SUPPLICANT_INTERFACE ".Interface",
				"BSSs", scan_bss_data, interface, interface);
}

static void signal_bss_added(const char *path, DBusMessageIter *iter)
{
	GSupplicantInterface *interface;

	SUPPLICANT_DBG("");

	interface = g_hash_table_lookup(interface_table, path);
	if (!interface)
		return;

	interface_bss_added_with_keys(iter, interface);
}

static void signal_bss_removed(const char *path, DBusMessageIter *iter)
{
	GSupplicantInterface *interface;

	SUPPLICANT_DBG("");

	interface = g_hash_table_lookup(interface_table, path);
	if (!interface)
		return;

	interface_bss_removed(iter, interface);
}

static void signal_network_added(const char *path, DBusMessageIter *iter)
{
	GSupplicantInterface *interface;

	SUPPLICANT_DBG("");

	interface = g_hash_table_lookup(interface_table, path);
	if (!interface)
		return;

	interface_network_added(iter, interface);
}

static void signal_network_removed(const char *path, DBusMessageIter *iter)
{
	GSupplicantInterface *interface;

	SUPPLICANT_DBG("");

	interface = g_hash_table_lookup(interface_table, path);
	if (!interface)
		return;

	interface_network_removed(iter, interface);
}

static void signal_bss_changed(const char *path, DBusMessageIter *iter)
{
	GSupplicantInterface *interface;
	GSupplicantNetwork *network;
	GSupplicantSecurity old_security;
	struct g_supplicant_bss *bss;

	SUPPLICANT_DBG("");

	interface = g_hash_table_lookup(bss_mapping, path);
	if (!interface)
		return;

	network = g_hash_table_lookup(interface->bss_mapping, path);
	if (!network)
		return;

	bss = g_hash_table_lookup(network->bss_table, path);
	if (!bss)
		return;

	supplicant_dbus_property_foreach(iter, bss_property, bss);

	old_security = network->security;
	bss_compute_security(bss);

	if (old_security != bss->security) {
		struct g_supplicant_bss *new_bss;

		SUPPLICANT_DBG("New network security for %s", bss->ssid);

		/* Security change policy:
		 * - we first copy the current bss into a new one with
		 * its own pointer (path)
		 * - we remove the current bss related network which will
		 * tell the plugin about such removal. This is done due
		 * to the fact that a security change means a group change
		 * so a complete network change.
		 * (current bss becomes invalid as well)
		 * - we add the new bss: it adds new network and tell the
		 * plugin about it. */

		new_bss = g_try_new0(struct g_supplicant_bss, 1);
		if (!new_bss)
			return;

		memcpy(new_bss, bss, sizeof(struct g_supplicant_bss));
		new_bss->path = g_strdup(bss->path);

		g_hash_table_remove(interface->network_table, network->group);

		add_or_replace_bss_to_network(new_bss);

		return;
	}

	if (bss->signal == network->signal)
		return;

	/*
	 * If the new signal is lower than the SSID signal, we need
	 * to check for the new maximum.
	 */
	if (bss->signal < network->signal) {
		if (bss != network->best_bss)
			return;
		network->signal = bss->signal;
		update_network_signal(network);
	} else {
		network->signal = bss->signal;
		network->best_bss = bss;
	}

	SUPPLICANT_DBG("New network signal for %s %d dBm", network->ssid,
			network->signal);

	callback_network_changed(network, "Signal");
}

static void wps_credentials(const char *key, DBusMessageIter *iter,
			void *user_data)
{
	GSupplicantInterface *interface = user_data;

	if (!key)
		return;

	SUPPLICANT_DBG("key %s", key);

	if (g_strcmp0(key, "Key") == 0) {
		DBusMessageIter array;
		unsigned char *key_val;
		int key_len;

		dbus_message_iter_recurse(iter, &array);
		dbus_message_iter_get_fixed_array(&array, &key_val, &key_len);

		g_free(interface->wps_cred.key);
		interface->wps_cred.key = g_try_malloc0(
						sizeof(char) * key_len + 1);

		if (!interface->wps_cred.key)
			return;

		memcpy(interface->wps_cred.key, key_val,
						sizeof(char) * key_len);

		SUPPLICANT_DBG("WPS key present");
	} else if (g_strcmp0(key, "SSID") == 0) {
		DBusMessageIter array;
		unsigned char *ssid;
		int ssid_len;

		dbus_message_iter_recurse(iter, &array);
		dbus_message_iter_get_fixed_array(&array, &ssid, &ssid_len);

		if (ssid_len > 0 && ssid_len < 33) {
			memcpy(interface->wps_cred.ssid, ssid, ssid_len);
			interface->wps_cred.ssid_len = ssid_len;
		} else {
			memset(interface->wps_cred.ssid, 0, 32);
			interface->wps_cred.ssid_len = 0;
		}
	}
}

static void signal_wps_credentials(const char *path, DBusMessageIter *iter)
{
	GSupplicantInterface *interface;

	SUPPLICANT_DBG("");

	interface = g_hash_table_lookup(interface_table, path);
	if (!interface)
		return;

	supplicant_dbus_property_foreach(iter, wps_credentials, interface);
}

static void wps_event_args(const char *key, DBusMessageIter *iter,
			void *user_data)
{
	GSupplicantInterface *interface = user_data;

	if (!key || !interface)
		return;

	SUPPLICANT_DBG("Arg Key %s", key);
}

static void signal_wps_event(const char *path, DBusMessageIter *iter)
{
	GSupplicantInterface *interface;
	const char *name = NULL;

	SUPPLICANT_DBG("");

	interface = g_hash_table_lookup(interface_table, path);
	if (!interface)
		return;

	dbus_message_iter_get_basic(iter, &name);

	SUPPLICANT_DBG("Name: %s", name);

	if (g_strcmp0(name, "success") == 0)
		interface->wps_state = G_SUPPLICANT_WPS_STATE_SUCCESS;
	else if (g_strcmp0(name, "fail") == 0)
		interface->wps_state = G_SUPPLICANT_WPS_STATE_FAIL;
	else
		interface->wps_state = G_SUPPLICANT_WPS_STATE_UNKNOWN;

	if (!dbus_message_iter_has_next(iter))
		return;

	dbus_message_iter_next(iter);

	supplicant_dbus_property_foreach(iter, wps_event_args, interface);
}

static void create_peer_identifier(GSupplicantPeer *peer)
{
	const unsigned char test[ETH_ALEN] = {};

	if (!peer)
		return;

	if (!memcmp(peer->device_address, test, ETH_ALEN)) {
		peer->identifier = g_strdup(peer->name);
		return;
	}

	peer->identifier = g_malloc0(19);
	snprintf(peer->identifier, 19, "%02x%02x%02x%02x%02x%02x",
						peer->device_address[0],
						peer->device_address[1],
						peer->device_address[2],
						peer->device_address[3],
						peer->device_address[4],
						peer->device_address[5]);
}

struct peer_property_data {
	GSupplicantPeer *peer;
	GSList *old_groups;
	bool groups_changed;
	bool services_changed;
};

static void peer_groups_relation(DBusMessageIter *iter, void *user_data)
{
	struct peer_property_data *data = user_data;
	GSupplicantPeer *peer = data->peer;
	GSupplicantGroup *group;
	const char *str = NULL;
	GSList *elem;

	dbus_message_iter_get_basic(iter, &str);
	if (!str)
		return;

	group = g_hash_table_lookup(group_mapping, str);
	if (!group)
		return;

	elem = g_slist_find_custom(data->old_groups, str, (GCompareFunc)g_strcmp0);
	if (elem) {
		data->old_groups = g_slist_remove_link(data->old_groups, elem);
		peer->groups = g_slist_concat(elem, peer->groups);
	} else {
		peer->groups = g_slist_prepend(peer->groups, g_strdup(str));
		data->groups_changed = true;
	}
}

static void peer_property(const char *key, DBusMessageIter *iter,
							void *user_data)
{
	GSupplicantPeer *pending_peer;
	struct peer_property_data *data = user_data;
	GSupplicantPeer *peer = data->peer;

	SUPPLICANT_DBG("key: %s", key);

	if (!peer->interface)
		return;

	if (!key) {
		if (peer->name) {
			create_peer_identifier(peer);
			callback_peer_found(peer);
			pending_peer = g_hash_table_lookup(
					pending_peer_connection, peer->path);

			if (pending_peer && pending_peer == peer) {
				callback_peer_request(peer);
				g_hash_table_remove(pending_peer_connection,
						peer->path);
			}

			dbus_free(data);
		}

		return;
	}

	if (g_strcmp0(key, "DeviceAddress") == 0) {
		unsigned char *dev_addr;
		DBusMessageIter array;
		int len;

		dbus_message_iter_recurse(iter, &array);
		dbus_message_iter_get_fixed_array(&array, &dev_addr, &len);

		if (len == ETH_ALEN)
			memcpy(peer->device_address, dev_addr, len);
	} else if (g_strcmp0(key, "DeviceName") == 0) {
		const char *str = NULL;

		dbus_message_iter_get_basic(iter, &str);
		if (str)
			peer->name = g_strdup(str);
	} else if (g_strcmp0(key, "config_method") == 0) {
		uint16_t wps_config;

		dbus_message_iter_get_basic(iter, &wps_config);

		if (wps_config & G_SUPPLICANT_WPS_CONFIG_PBC)
			peer->wps_capabilities |= G_SUPPLICANT_WPS_PBC;
		if (wps_config & ~G_SUPPLICANT_WPS_CONFIG_PBC)
			peer->wps_capabilities |= G_SUPPLICANT_WPS_PIN;
	} else if (g_strcmp0(key, "Groups") == 0) {
		data->old_groups = peer->groups;
		peer->groups = NULL;

		supplicant_dbus_array_foreach(iter,
						peer_groups_relation, data);
		if (g_slist_length(data->old_groups) > 0) {
			g_slist_free_full(data->old_groups, g_free);
			data->groups_changed = true;
		}
	} else if (g_strcmp0(key, "IEs") == 0) {
		DBusMessageIter array;
		unsigned char *ie;
		int ie_len;

		dbus_message_iter_recurse(iter, &array);
		dbus_message_iter_get_fixed_array(&array, &ie, &ie_len);

		if (!ie || ie_len < 2)
			return;

		if (peer->widi_ies) {
			if (memcmp(peer->widi_ies, ie, ie_len) == 0)
				return;

			g_free(peer->widi_ies);
			peer->widi_ies_length = 0;
		}

		peer->widi_ies = g_malloc0(ie_len * sizeof(unsigned char));

		memcpy(peer->widi_ies, ie, ie_len);
		peer->widi_ies_length = ie_len;
		data->services_changed = true;
	}
}

static void signal_peer_found(const char *path, DBusMessageIter *iter)
{
	struct peer_property_data *property_data;
	GSupplicantInterface *interface;
	const char *obj_path = NULL;
	GSupplicantPeer *peer;

	SUPPLICANT_DBG("");

	interface = g_hash_table_lookup(interface_table, path);
	if (!interface)
		return;

	dbus_message_iter_get_basic(iter, &obj_path);
	if (!obj_path || g_strcmp0(obj_path, "/") == 0)
		return;

	peer = g_hash_table_lookup(interface->peer_table, obj_path);
	if (peer)
		return;

	peer = g_try_new0(GSupplicantPeer, 1);
	if (!peer)
		return;

	peer->interface = interface;
	peer->path = g_strdup(obj_path);
	g_hash_table_insert(interface->peer_table, peer->path, peer);
	g_hash_table_replace(peer_mapping, peer->path, interface);

	property_data = dbus_malloc0(sizeof(struct peer_property_data));
	property_data->peer = peer;

	dbus_message_iter_next(iter);
	if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_INVALID) {
		supplicant_dbus_property_foreach(iter, peer_property,
							property_data);
		peer_property(NULL, NULL, property_data);
		return;
	}

	supplicant_dbus_property_get_all(obj_path,
					SUPPLICANT_INTERFACE ".Peer",
					peer_property, property_data, NULL);
}

static void signal_peer_lost(const char *path, DBusMessageIter *iter)
{
	GSupplicantInterface *interface;
	const char *obj_path = NULL;
	GSupplicantPeer *peer;

	SUPPLICANT_DBG("");

	interface = g_hash_table_lookup(interface_table, path);
	if (!interface)
		return;

	dbus_message_iter_get_basic(iter, &obj_path);
	if (!obj_path || g_strcmp0(obj_path, "/") == 0)
		return;

	peer = g_hash_table_lookup(interface->peer_table, obj_path);
	if (!peer)
		return;

	g_hash_table_remove(interface->peer_table, obj_path);
}

static void signal_peer_changed(const char *path, DBusMessageIter *iter)
{
	struct peer_property_data *property_data;
	GSupplicantInterface *interface;
	GSupplicantPeer *peer;

	SUPPLICANT_DBG("");

	interface = g_hash_table_lookup(peer_mapping, path);
	if (!interface)
		return;

	peer = g_hash_table_lookup(interface->peer_table, path);
	if (!peer) {
		g_hash_table_remove(peer_mapping, path);
		return;
	}

	property_data = dbus_malloc0(sizeof(struct peer_property_data));
	property_data->peer = peer;

	supplicant_dbus_property_foreach(iter, peer_property, property_data);
	if (property_data->services_changed)
		callback_peer_changed(peer,
					G_SUPPLICANT_PEER_SERVICES_CHANGED);

	if (property_data->groups_changed)
		callback_peer_changed(peer, G_SUPPLICANT_PEER_GROUP_CHANGED);

	dbus_free(property_data);

	if (!g_supplicant_peer_is_in_a_group(peer))
		peer->connection_requested = false;
}

struct group_sig_data {
	const char *peer_obj_path;
	unsigned char iface_address[ETH_ALEN];
	const char *interface_obj_path;
	const char *group_obj_path;
	int role;
};

static void group_sig_property(const char *key, DBusMessageIter *iter,
							void *user_data)
{
	struct group_sig_data *data = user_data;

	if (!key)
		return;

	if (g_strcmp0(key, "peer_interface_addr") == 0) {
		unsigned char *dev_addr;
		DBusMessageIter array;
		int len;

		dbus_message_iter_recurse(iter, &array);
		dbus_message_iter_get_fixed_array(&array, &dev_addr, &len);

		if (len == ETH_ALEN)
			memcpy(data->iface_address, dev_addr, len);
	} else if (g_strcmp0(key, "role") == 0) {
		const char *str = NULL;

		dbus_message_iter_get_basic(iter, &str);
		if (g_strcmp0(str, "GO") == 0)
			data->role = G_SUPPLICANT_GROUP_ROLE_GO;
		else
			data->role = G_SUPPLICANT_GROUP_ROLE_CLIENT;
	} else if (g_strcmp0(key, "peer_object") == 0)
		dbus_message_iter_get_basic(iter, &data->peer_obj_path);
	else if (g_strcmp0(key, "interface_object") == 0)
		dbus_message_iter_get_basic(iter, &data->interface_obj_path);
	else if (g_strcmp0(key, "group_object") == 0)
		dbus_message_iter_get_basic(iter, &data->group_obj_path);

}

static void signal_group_success(const char *path, DBusMessageIter *iter)
{
	GSupplicantInterface *interface;
	struct group_sig_data data = {};
	GSupplicantPeer *peer;

	SUPPLICANT_DBG("");

	interface = g_hash_table_lookup(interface_table, path);
	if (!interface)
		return;

	supplicant_dbus_property_foreach(iter, group_sig_property, &data);
	if (!data.peer_obj_path)
		return;

	peer = g_hash_table_lookup(interface->peer_table, data.peer_obj_path);
	if (!peer)
		return;

	memcpy(peer->iface_address, data.iface_address, ETH_ALEN);
	interface->pending_peer_path = peer->path;
}

static void signal_group_failure(const char *path, DBusMessageIter *iter)
{
	GSupplicantInterface *interface;
	struct group_sig_data data = {};
	GSupplicantPeer *peer;

	SUPPLICANT_DBG("");

	interface = g_hash_table_lookup(interface_table, path);
	if (!interface)
		return;

	supplicant_dbus_property_foreach(iter, group_sig_property, &data);
	if (!data.peer_obj_path)
		return;

	peer = g_hash_table_lookup(interface->peer_table, data.peer_obj_path);
	if (!peer)
		return;

	callback_peer_changed(peer, G_SUPPLICANT_PEER_GROUP_FAILED);
	peer->connection_requested = false;
}

static void signal_group_started(const char *path, DBusMessageIter *iter)
{
	GSupplicantInterface *interface, *g_interface;
	struct group_sig_data data = {};
	GSupplicantGroup *group;
	GSupplicantPeer *peer;

	SUPPLICANT_DBG("");

	interface = g_hash_table_lookup(interface_table, path);
	if (!interface)
		return;

	supplicant_dbus_property_foreach(iter, group_sig_property, &data);
	if (!data.interface_obj_path || !data.group_obj_path)
		return;

	peer = g_hash_table_lookup(interface->peer_table,
						interface->pending_peer_path);
	interface->pending_peer_path = NULL;
	if (!peer)
		return;

	g_interface = g_hash_table_lookup(interface_table,
						data.interface_obj_path);
	if (!g_interface)
		return;

	group = g_hash_table_lookup(interface->group_table,
						data.group_obj_path);
	if (group)
		return;

	group = g_try_new0(GSupplicantGroup, 1);
	if (!group)
		return;

	group->interface = g_interface;
	group->orig_interface = interface;
	group->path = g_strdup(data.group_obj_path);
	group->role = data.role;

	g_hash_table_insert(interface->group_table, group->path, group);
	g_hash_table_replace(group_mapping, group->path, group);

	peer->current_group_iface = g_interface;
	callback_peer_changed(peer, G_SUPPLICANT_PEER_GROUP_STARTED);
}

static void remove_peer_group_interface(GHashTable *group_table,
				const char* path)
{
	GSupplicantGroup *group;
	GHashTableIter iter;
	gpointer value, key;

	if (!group_table)
		return;

	group = g_hash_table_lookup(group_table, path);

	if (!group || !group->orig_interface)
		return;

	g_hash_table_iter_init(&iter, group->orig_interface->peer_table);

	while (g_hash_table_iter_next(&iter, &key, &value)) {
		GSupplicantPeer *peer = value;

		if (peer->current_group_iface == group->interface)
			peer->current_group_iface = NULL;
	}
}

static void signal_group_finished(const char *path, DBusMessageIter *iter)
{
	GSupplicantInterface *interface;
	struct group_sig_data data = {};

	SUPPLICANT_DBG("");

	interface = g_hash_table_lookup(interface_table, path);
	if (!interface)
		return;

	supplicant_dbus_property_foreach(iter, group_sig_property, &data);
	if (!data.interface_obj_path || !data.group_obj_path)
		return;

	remove_peer_group_interface(interface->group_table, data.group_obj_path);

	g_hash_table_remove(group_mapping, data.group_obj_path);

	g_hash_table_remove(interface->group_table, data.group_obj_path);
}

static void signal_group_request(const char *path, DBusMessageIter *iter)
{