config.c

/*
 * config.c - configurations handling
 *
 * Copyright (C) 2019 IOPSYS Software Solutions AB. All rights reserved.
 *
 * Author: anjan.chanda@iopsys.eu
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#ifndef IFNAMSIZ
#define IFNAMSIZ 16
#endif

#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif

#include <json-c/json.h>
#include <libubox/blobmsg.h>
#include <libubox/blobmsg_json.h>
#include <libubox/uloop.h>
#include <libubox/ustream.h>
#include <libubox/utils.h>
#include <libubus.h>
#include <uci.h>

#include <i1905_wsc.h>

#include <easy/easy.h>

#include "debug.h"
#include "utils.h"
#include "config.h"
#include "steer_rules.h"
#include "comm.h"
#include "msgqueue.h"
#include "worker.h"
#include "agent.h"

// UCI sections
#define UCI_BK_AGENT "bk-iface"
#define UCI_FH_AGENT "fh-iface"
#define UCI_WLAN_IFACE "wifi-iface"
#define UCI_WL_DEVICE "wifi-device"
#define UCI_WIRELESS "wireless"
#define UCI_IEEE1905 "ieee1905"
#define UCI_AGENT "mapagent"

int verbose;

char *replace_char(char *str, char find, char replace)
{
	char *current_pos = strchr(str, find);

	while (current_pos) {
		*current_pos = replace;
		current_pos = strchr(current_pos, find);
	}

	return str;
}

int set_value(struct uci_context *ctx, struct uci_package *pkg,
		struct uci_section *section, const char *key,
		const char *value, enum uci_option_type type)
{
	struct uci_ptr ptr = {0};

	ptr.p = pkg;
	ptr.s = section;
	ptr.option = key;
	ptr.value = value;

	if (type == UCI_TYPE_STRING)
		return uci_set(ctx, &ptr);

	if (type == UCI_TYPE_LIST)
		return uci_add_list(ctx, &ptr);

	return -1;
}

int set_value_by_string(const char *package, const char *section,
		const char *key, const char *value, enum uci_option_type type)
{
	struct uci_ptr ptr = {0};
	struct uci_context *ctx;
	int rv;

	ctx = uci_alloc_context();
	if (!ctx)
		return -1;

	ptr.package = package;
	ptr.section = section;
	ptr.option = key;
	ptr.value = value;

	if (type == UCI_TYPE_STRING)
		rv = uci_set(ctx, &ptr);

	if (type == UCI_TYPE_LIST)
		rv = uci_add_list(ctx, &ptr);

	uci_commit(ctx, &ptr.p, false);

	uci_free_context(ctx);
	return rv;
}

struct uci_section *config_get_section(struct uci_context *ctx,
		struct uci_package *pkg, const char *type, const char *key,
		const char *value)
{
	struct uci_element *e;
	struct uci_section *section;

	/* get the wet iface section */
	uci_foreach_element(&pkg->sections, e) {
		const char *c_value;

		section = uci_to_section(e);
		if (strcmp(section->type, type))
			continue;

		c_value = uci_lookup_option_string(ctx, section, key);
		if (c_value && !strcmp(c_value, value))
			return section;
	}

	return NULL;
}

struct uci_package *uci_load_pkg(struct uci_context **ctx, const char *config)
{
	struct uci_package *pkg;

	if (!*ctx) {
		*ctx = uci_alloc_context();
		if (!*ctx)
			return NULL;
	}

	if (uci_load(*ctx, config, &pkg) != UCI_OK) {
		free(*ctx);
		return NULL;
	}

	return pkg;
}

/* TODO: causes segfault in disc? */
char *uci_get_bridge(char *ifname, char *bridge)
{
	struct uci_context *ctx;
	struct uci_package *pkg;
	struct uci_element *e;

	strncpy(bridge, "lan", 15);
	return bridge;

	pkg = uci_load_pkg(&ctx, UCI_WIRELESS);
	if (!pkg)
		return NULL;

	uci_foreach_element(&pkg->sections, e) {
		struct uci_section *s = uci_to_section(e);
		struct uci_option *opt;

		if (strcmp(s->type, UCI_WLAN_IFACE))
			continue;

		opt = uci_lookup_option(ctx, s,	"ifname");
		if (!opt || opt->type != UCI_TYPE_STRING)
			continue;

		if (!strncmp(opt->v.string, ifname, 16))
			continue;

		opt = uci_lookup_option(ctx, s,	"network");
		if (!opt || opt->type != UCI_TYPE_STRING)
			continue;

		strncpy(bridge, opt->v.string, 16);
		break;
	}

	uci_unload(ctx, pkg);
	uci_free_context(ctx);
	return bridge;
}


/* TODO: can it be generalized? */
int wifi_set_iface_bssid(const char *ifname, uint8_t *bssid)
{
	struct uci_context *ctx = NULL;
	struct uci_package *pkg;
	struct uci_section *section;
	char bssid_str[18] = {0};
	int ret = -1;

	pkg = uci_load_pkg(&ctx, "wireless");
	if (!pkg)
		return ret;

	section = config_get_section(ctx, pkg, "wifi-iface", "ifname", ifname);
	if (!section)
		goto out_pkg;

	if (bssid && !hwaddr_ntoa(bssid, bssid_str))
		goto out_pkg;

	ret = set_value(ctx, pkg, section, "bssid", bssid_str, UCI_TYPE_STRING);

	uci_commit(ctx, &pkg, false);

	uci_reload_services("wireless");
out_pkg:
	uci_unload(ctx, pkg);
	uci_free_context(ctx);
	return ret;
}

int config_del_iface(const char *config, const char *type, const char *ifname)
{
	struct uci_context *ctx;
	struct uci_package *pkg;
	struct uci_section *section;
	struct uci_ptr ptr = {0};
	int rv = -1;

	ctx = uci_alloc_context();
	if (!ctx)
		goto out;

	if (uci_load(ctx, config, &pkg) != UCI_OK) {
		dbg("config file 'wireless' not found!\n");
		goto out_uci;
	}

	section = config_get_section(ctx, pkg, type, "ifname", ifname);
	if (!section)
		goto out_pkg;

	ptr.p = pkg;
	ptr.s = section;

	uci_delete(ctx, &ptr);
	uci_commit(ctx, &pkg, false);
out_pkg:
	uci_unload(ctx, pkg);
out_uci:
	uci_free_context(ctx);
out:
	return rv;
}

int wifi_apply_iface_cfg(const char *ifname, const char *encryption,
		const char *ssid, const char *key)
{
	struct uci_context *ctx;
	struct uci_package *pkg;
	struct uci_section *section;
	int rv = -1;

	ctx = uci_alloc_context();
	if (!ctx)
		goto out;

	if (uci_load(ctx, "wireless", &pkg) != UCI_OK) {
		dbg("config file 'wireless' not found!\n");
		goto out_uci;
	}

	section = config_get_section(ctx, pkg, "wifi-iface", "ifname", ifname);
	if (!section)
		goto out_pkg;

	set_value(ctx, pkg, section, "encryption", encryption, UCI_TYPE_STRING);
	set_value(ctx, pkg, section, "ssid", ssid, UCI_TYPE_STRING);
	set_value(ctx, pkg, section, "key", key, UCI_TYPE_STRING);
	set_value(ctx, pkg, section, "wds", "1", UCI_TYPE_STRING);

	uci_commit(ctx, &pkg, false);
out_pkg:
	uci_unload(ctx, pkg);
out_uci:
	uci_free_context(ctx);
out:
	return rv;
}

char *agent_config_get_ethwan(char *ifname)
{
	struct uci_context *ctx;
	struct uci_ptr ptr = {0};

	ctx = uci_alloc_context();
	if (!ctx)
		return NULL;

	//ptr.value = value;
	ptr.package = "ports";
	ptr.section = "WAN";
	ptr.option = "ifname";
	ptr.target = UCI_TYPE_OPTION;

	if (uci_lookup_ptr(ctx, &ptr, NULL, false)) {
		uci_free_context(ctx);
		return NULL;
	}

	strncpy(ifname, ptr.o->v.string, 15);

	uci_free_context(ctx);
	return ifname;
}


struct uci_section *config_add_section(struct uci_context *ctx,
		struct uci_package *pkg, const char *config, const char *type,
		const char *key, const char *value)
{
	struct uci_section *section = NULL;
	struct uci_ptr ptr = {0};
	int rv = -1;

	section = config_get_section(ctx, pkg, type, key, value);
	if (!section) {
		rv = uci_add_section(ctx, pkg, type, &section);
		if (rv)
			goto out_pkg;

		rv = uci_save(ctx, pkg);
		if (rv)
			goto out_pkg;
	}

	ptr.value = value;
	ptr.package = config;
	ptr.section = section->e.name;
	ptr.option = key;
	ptr.target = UCI_TYPE_OPTION;

	uci_lookup_ptr(ctx, &ptr, NULL, false);
	uci_set(ctx, &ptr);
	uci_save(ctx, ptr.p);

out_pkg:
	return section;
}

int config_add_default_wifi_iface(const char *config, const char *type,
		const char *ifname, const char *device, const char *network,
		const char *mode)
{
	struct uci_context *ctx;
	struct uci_package *pkg;
	struct uci_section *section;
	int rv = -1;

	ctx = uci_alloc_context();
	if (!ctx)
		goto out;

	if (uci_load(ctx, config, &pkg) != UCI_OK) {
		dbg("config file 'wireless' not found!\n");
		goto out_uci;
	}

	section = config_add_section(ctx, pkg, config, type, "ifname", ifname);
	if (!section)
		return -1;


	set_value(ctx, pkg, section, "device", device, UCI_TYPE_STRING);
	set_value(ctx, pkg, section, "network", network, UCI_TYPE_STRING);
	//set_value(ctx, pkg, section, "mode", mode, UCI_TYPE_STRING);

	uci_commit(ctx, &pkg, false);

out_pkg:
	uci_unload(ctx, pkg);
out_uci:
	uci_free_context(ctx);
out:
	return 0;
}

int config_add_default_agent_iface(const char *config, const char *type,
		const char *ifname, enum wifi_band band)
{
	struct uci_context *ctx;
	struct uci_package *pkg;
	struct uci_section *section;
	int rv = -1;

	ctx = uci_alloc_context();
	if (!ctx)
		goto out;

	if (uci_load(ctx, config, &pkg) != UCI_OK) {
		dbg("config file 'wireless' not found!\n");
		goto out_uci;
	}

	section = config_add_section(ctx, pkg, config, type, "ifname", ifname);
	if (!section)
		return -1;

	trace("band = %d\n", band);

	if (band == BAND_5)
		set_value(ctx, pkg, section, "band", "5", UCI_TYPE_STRING);
	if (band == BAND_2)
		set_value(ctx, pkg, section, "band", "2", UCI_TYPE_STRING);

	uci_commit(ctx, &pkg, false);

out_pkg:
	uci_unload(ctx, pkg);
out_uci:
	uci_free_context(ctx);
out:
	return 0;
}

/* below functions are mostly taken from ieee1905d */
bool uci_check_wifi_iface(char *package_name, char *ifname,
		char *section)
{
	bool ret;
	struct uci_context *ctx;
	struct uci_package *pkg;
	struct uci_element *e;

	if (!package_name || !ifname)
		return false;

	ctx = uci_alloc_context();
	if (!ctx)
		return false;

	if (uci_load(ctx, package_name, &pkg)) {
		uci_free_context(ctx);
		return false;
	}

	ret = false;
	uci_foreach_element(&pkg->sections, e) {
		struct uci_section *s = uci_to_section(e);

		if (!strcmp(s->type, section)) {
			struct uci_option *opt = uci_lookup_option(ctx, s,
					"ifname");

			if (!opt || opt->type != UCI_TYPE_STRING)
				continue;
			if (strcmp(opt->v.string, ifname) == 0) {
				ret = true;
				break;
			}
		}
	}
	uci_unload(ctx, pkg);
	uci_free_context(ctx);

	return ret;
}

bool uci_set_wireless_interface_option(char *package_name,
		char *section_type, char *search_key, char *search_val,
		char *option, char *value)
{
	struct uci_context *ctx;
	struct uci_package *pkg;
	struct uci_element *e;

	if (!package_name || !search_val || !option || !value)
		return false;

	ctx = uci_alloc_context();
	if (!ctx)
		return false;

	if (uci_load(ctx, package_name, &pkg)) {
		uci_free_context(ctx);
		return false;
	}

	uci_foreach_element(&pkg->sections, e) {
		struct uci_section *s = uci_to_section(e);

		if (!strcmp(s->type, section_type)) {
			struct uci_option *opt = uci_lookup_option(ctx, s,
					search_key);

			if (!opt || opt->type != UCI_TYPE_STRING)
				continue;
			if (strcmp(opt->v.string, search_val) == 0) {
				struct uci_ptr ptr = {0};

				ptr.value = value;
				ptr.package = package_name;
				ptr.section = s->e.name;
				ptr.option = option;
				ptr.target = UCI_TYPE_OPTION;
				if (uci_lookup_ptr(ctx, &ptr, NULL, false) ||
						!UCI_LOOKUP_COMPLETE)
					break;
				if (uci_set(ctx, &ptr) == UCI_OK)
					uci_save(ctx, ptr.p);
				break;
			}
		}
	}
	uci_commit(ctx, &pkg, false);
	uci_unload(ctx, pkg);
	uci_free_context(ctx);
	return false;
}

static bool get_encryption_value(uint16_t auth_type, uint16_t encryption_type,
		char *encrypt_val, size_t elen)
{
	if (!encrypt_val)
		return false;

	if ((auth_type & WPS_AUTH_WPAPSK) && (auth_type & WPS_AUTH_WPA2PSK))
		strncat(encrypt_val, "psk-mixed", elen);
	else if ((auth_type & WPS_AUTH_WPA) && (auth_type & WPS_AUTH_WPA2))
		strncat(encrypt_val, "wpa-mixed", elen);
	else if (auth_type & WPS_AUTH_WPAPSK)
		strncat(encrypt_val, "psk", elen);
	else if (auth_type & WPS_AUTH_WPA2PSK)
		strncat(encrypt_val, "psk2", elen);
	else if (auth_type & WPS_AUTH_WPA)
		strncat(encrypt_val, "wpa", elen);
	else if (auth_type & WPS_AUTH_WPA2)
		strncat(encrypt_val, "wpa2", elen);
	else if (auth_type & WPS_AUTH_OPEN)
		strncat(encrypt_val, "none", elen);
	else
		return false;

	//Check for the encryption type
	if ((encryption_type & WPS_ENCR_TKIP) &&
			(encryption_type & WPS_ENCR_AES))
		strncat(encrypt_val, "+tkip+aes", elen);
	else if (encryption_type & WPS_ENCR_TKIP)
		strncat(encrypt_val, "+tkip", elen);
	else if (encryption_type & WPS_ENCR_AES)
		strncat(encrypt_val, "+aes", elen);

	return true;
}

bool uci_add_wireless_iface_sec(char *package_name, char *interface_name,
		char *section_type, char *section_name)
{
	struct uci_context *ctx;
	struct uci_package *pkg;
	struct uci_section *s;
	struct uci_ptr ptr = {0};
	bool ret = false;

	if (!interface_name || !package_name)
		return false;

	ctx = uci_alloc_context();
	if (!ctx)
		return false;

	if (uci_load(ctx, package_name, &pkg))
		goto out_ctx;

	ptr.p = pkg;

	if (section_name) {
		ptr.section = section_name;
		ptr.value = section_type;
		ptr.option = NULL;
		uci_set(ctx, &ptr);
		if (uci_save(ctx, ptr.p) != UCI_OK)
			goto out_unload;
	} else {
		if (uci_add_section(ctx, pkg, section_type, &s) != UCI_OK)
			goto out_unload;

		if (uci_save(ctx, pkg) != UCI_OK)
			goto out_unload;

		ptr.section = s->e.name;
	}

	ptr.value = interface_name;
	ptr.option = "ifname";
	ptr.target = UCI_TYPE_OPTION;
	uci_lookup_ptr(ctx, &ptr, NULL, false);

	uci_set(ctx, &ptr);
	uci_save(ctx, ptr.p);
	uci_commit(ctx, &pkg, false);

	ret = true;
out_unload:
	uci_unload(ctx, pkg);
out_ctx:
	uci_free_context(ctx);
	return ret;
}

static int ubus_call(const char *object, const char *method,
		struct blob_buf *data, void *callback, void *cb_arg)
{
	uint32_t id;
	struct ubus_context *ctx = ubus_connect(NULL);

	if (!ctx) {
		err("ubus_connect failed\n");
		return UBUS_STATUS_UNKNOWN_ERROR;
	}

	if (ubus_lookup_id(ctx, object, &id)) {
		err("(%s) not present\n", object);
		ubus_free(ctx);
		return UBUS_STATUS_UNKNOWN_ERROR;
	}

	// Invoke Ubus to get data from uspd
	if (ubus_invoke(ctx, id, method, data->head, callback, cb_arg, 1000)) {
		err("ubus call failed\n");
		ubus_free(ctx);
		return UBUS_STATUS_UNKNOWN_ERROR;
	}

	ubus_free(ctx);
	return UBUS_STATUS_OK;
}

bool uci_reload_services(char *services)
{
	struct blob_buf bb;
	int rv = 0;
	memset(&bb, 0, sizeof(struct blob_buf));
	blob_buf_init(&bb, 0);

	blobmsg_add_string(&bb, "config", services);

	rv = ubus_call("uci", "commit", &bb, NULL, NULL);

	info("## Reloading uci config %d\n", rv);
	//if (!ubus_call("uci", "reload_config", &bb, NULL, NULL))
	//	return true;

	//ubus_call("uci", "reload_config", &bb, NULL, NULL);

	blob_buf_free(&bb);

	return false;
}

#if 0 /* Deprecated for 6.1 - Possibly bring back in 6.2 with modifications */
/* TODO: introduce option and vendor extension to make this logic redundant */
int uci_apply_wps_credentials(struct agent_config *cfg, enum wifi_band band)
{
	struct netif_bkcfg *bk;
	struct netif_fhcfg *fh;

	list_for_each_entry(bk, &cfg->bklist, list) {
		if (bk->band != band)
			continue;

		list_for_each_entry(fh, &cfg->fhlist, list) {
			if (fh->band != band)
				continue;

			dbg("Applying bBSS credentials to %s:\n", fh->name);
			dbg("  - SSID            : %s\n", bk->ssid);
			dbg("  - NETWORK_KEY     : %s\n", bk->key);

			uci_set_wireless_interface_option(UCI_WIRELESS,
					UCI_WLAN_IFACE,
					"ifname",
					fh->name,
					"multi_ap_backhaul_ssid",
					bk->ssid);
			uci_set_wireless_interface_option(UCI_WIRELESS,
					UCI_WLAN_IFACE,
					"ifname",
					fh->name,
					"multi_ap_backhaul_key",
					bk->key);
			uci_set_wireless_interface_option(UCI_WIRELESS,
					UCI_WLAN_IFACE,	"ifname", fh->name, "wps", "1");
			uci_set_wireless_interface_option(UCI_WIRELESS,
					UCI_WLAN_IFACE,	"ifname", fh->name,
					"wps_pushbutton", "1");
		}

		break;
	}

	return 0;
}
#endif


/* TODO: batch the changes arther than commit oneby one */
int uci_apply_m2(struct agent_config *cfg, char *interface_name, char *device,
		struct wps_credential *out, bool onboarded)
{
	bool ret;
	char auth_type_str[20] = {0};
	char multiap_str[2] = {0};
	uint8_t multi_ap = 0;
	char band_str[2] = {0};
	char agent_section[16] = {0};
	char ipaddr_str[INET_ADDRSTRLEN] = {0};
	char ssid[33] = {0}, network_key[65] = {0}, bridge_buf[16] = {0}, *bridge;
	/* step past br- prefix if present*/

	bridge = bridge_buf;
	if (!strncmp("br-", bridge, 3))
		bridge += 3;

	dbg("%s %d band = %d\n", __func__, __LINE__, out->band);
	if (out->band == BAND_5)
		strncpy(band_str, "5", 1);
	else if (out->band == BAND_2)
		strncpy(band_str, "2", 1);
	else /* TODO: 60 */
		return M2_PROCESS_ERROR;

	memcpy(ssid, out->ssid, out->ssidlen);
	memcpy(network_key, out->key, out->keylen);
	memcpy(bridge, out->bridge, 15);

	inet_ntop(AF_INET, &out->br_ip, ipaddr_str, INET_ADDRSTRLEN);

	dbg("Applying WSC configuration (%s):\n", interface_name);
	dbg("  - SSID            : %s\n", ssid);
	dbg("  - AUTH_TYPE       : 0x%04x\n", out->auth_type);
	dbg("  - ENCRYPTION_TYPE : 0x%04x\n", out->enc_type);
	dbg("  - NETWORK_KEY     : %s\n", network_key);
	dbg("  - MAPIE_EXTENSION : 0x%02x\n", out->mapie);
	dbg("  - BRIDGE          : %s\n", bridge);
	dbg("  - PROTO           : %s\n", out->proto);
	dbg("  - VID             : 0x%02x\n", out->vid);
	dbg("  - BR_IP           : %s\n", ipaddr_str);
	dbg("  - BK_SSID         : %s\n", out->bk_ssid);
	dbg("  - BK_KEY          : %s\n", out->bk_key);
	dbg("  - BAND            : %s\n", band_str);

	// if teardown bit is set, return
	if (BIT(4, out->mapie))
		return M2_PROCESS_TEARDOWN;

	multi_ap |= (BIT(5, out->mapie) << 1);
	multi_ap |= BIT(6, out->mapie);

	snprintf(multiap_str, sizeof(multiap_str), "%d", multi_ap);

	//snprintf(ipaddr_str, sizeof(ipaddr_str), "%d.%d.%d.%d", br_ip[0],
	//		br_ip[1], br_ip[2], br_ip[3]);

	if (!get_encryption_value(out->auth_type, out->enc_type,
			auth_type_str, 20)) {
		info("Unsupported encryption or cipher received!!\n");
		return M2_PROCESS_ERROR;
	}

	ret = uci_set_bridge("network", bridge, out->proto, ipaddr_str);
	if (ret) {
		info("Error seting up bridge from M2!\n");
		return M2_PROCESS_ERROR;
	}

	strncpy(agent_section, UCI_FH_AGENT, sizeof(agent_section));

	// Set uci in agent
	ret = uci_check_wifi_iface(UCI_AGENT, interface_name,
			agent_section);
	if (!ret) {
		ret = uci_add_wireless_iface_sec(UCI_AGENT, interface_name,
				agent_section, NULL);
		if (!ret)
			return M2_PROCESS_ERROR;
	}

	uci_set_wireless_interface_option(UCI_AGENT, agent_section, "ifname",
			interface_name, "band",	band_str);
	uci_set_wireless_interface_option(UCI_AGENT, agent_section, "ifname",
			interface_name,	"device", device);
	uci_set_wireless_interface_option(UCI_AGENT, agent_section, "ifname",
			interface_name,	"ssid", ssid);
	uci_set_wireless_interface_option(UCI_AGENT, agent_section, "ifname",
			interface_name,	"key", network_key);
	uci_set_wireless_interface_option(UCI_AGENT, agent_section, "ifname",
			interface_name,	"encryption", auth_type_str);
	if (multi_ap & 0x01) {
		char disallow_str[2] = {0};

		snprintf(disallow_str, sizeof(disallow_str), "%d",
				((out->mapie >> 2) & 0x03));
		uci_set_wireless_interface_option(UCI_AGENT,
				agent_section, "ifname",
				interface_name,
				"disallow_bsta", disallow_str);
	}

	// Set uci in wireless
	ret = uci_check_wifi_iface(UCI_WIRELESS, interface_name,
			UCI_WLAN_IFACE);
	if (!ret) {
		char name[32] = {0};

		snprintf(name, sizeof(name), "%s_ap", interface_name);
		replace_char(name, '.', '_');
		ret = uci_add_wireless_iface_sec(UCI_WIRELESS, interface_name,
				UCI_WLAN_IFACE, name);
		if (!ret)
			return M2_PROCESS_ERROR;
	}

	uci_set_wireless_interface_option(UCI_WIRELESS, UCI_WLAN_IFACE, "ifname",
			interface_name, "network", bridge);
	uci_set_wireless_interface_option(UCI_WIRELESS, UCI_WLAN_IFACE, "ifname",
			interface_name, "ssid", (char *) ssid);
	uci_set_wireless_interface_option(UCI_WIRELESS, UCI_WLAN_IFACE, "ifname",
			interface_name, "key", (char *) network_key);
	uci_set_wireless_interface_option(UCI_WIRELESS, UCI_WLAN_IFACE, "ifname",
			interface_name, "encryption", auth_type_str);
	uci_set_wireless_interface_option(UCI_WIRELESS, UCI_WLAN_IFACE, "ifname",
			interface_name, "mode", "ap");
	uci_set_wireless_interface_option(UCI_WIRELESS, UCI_WLAN_IFACE, "ifname",
			interface_name, "device", device);
	uci_set_wireless_interface_option(UCI_WIRELESS, UCI_WLAN_IFACE, "ifname",
			interface_name, "multi_ap", multiap_str);
	uci_set_wireless_interface_option(UCI_WIRELESS, UCI_WLAN_IFACE, "ifname",
			interface_name, "multi_ap_backhaul_key", out->bk_key);
	uci_set_wireless_interface_option(UCI_WIRELESS, UCI_WLAN_IFACE, "ifname",
			interface_name, "multi_ap_backhaul_ssid", out->bk_ssid);
	uci_set_wireless_interface_option(UCI_WIRELESS, UCI_WLAN_IFACE,	"ifname",
			interface_name, "ieee80211k", "1");
	uci_set_wireless_interface_option(UCI_WIRELESS, UCI_WLAN_IFACE,	"ifname",
			interface_name, "ieee80211v", "1");

	do {
		char buf[512] = {0};
		char basemacstr[18] = {0};
		uint8_t basemac[6] = {0};
		//uint8_t uuid[16] = {0};

		chrCmd(buf, sizeof(buf), "db -q get hw.board.basemac");
		if (buf[0] != '\0' && strlen(buf) == 17)
			strncpy(basemacstr, buf, 17);

		dbg("basemac: %s\n", basemacstr);
		hwaddr_aton(buf, basemac);

		memset(buf, 0, sizeof(buf));
		chrCmd(buf, sizeof(buf),
		       "uuidgen -s --namespace @dns --name www.iopsys.eu");

		if (buf[0] == '\0' || strlen(buf) != 36) {
			dbg("uuidgen error!\n");
			//TODO
		}

		snprintf(buf + 24, 13, "%02x%02x%02x%02x%02x%02x", MAC2STR(basemac));
		dbg("UUID: %s\n", buf);
		uci_set_wireless_interface_option(UCI_WIRELESS, UCI_WLAN_IFACE,	"ifname",
			interface_name, "uuid", buf);
	} while(0);

	if (multi_ap == 0x01) {
		uci_set_wireless_interface_option(UCI_WIRELESS, UCI_WLAN_IFACE,
			"ifname", interface_name, "hidden", "1");
	} else {
		uci_set_wireless_interface_option(UCI_WIRELESS,
			UCI_WLAN_IFACE,	"ifname", interface_name, "wps", "1");
		uci_set_wireless_interface_option(UCI_WIRELESS,
			UCI_WLAN_IFACE,	"ifname", interface_name,
			"wps_pushbutton", "1");
	}

	/* TODO: don't support guest network for the moment */
	//uci_add_dhcp(bridge);
	//uci_add_fw(cfg, bridge);

	return M2_PROCESS_OK;
}
/* end of functions taken from ieee1905d */

static struct netif_bkcfg *get_netif_bkcfg_by_name(struct agent_config *c,
		const char *name)
{
	struct netif_bkcfg *p;

	list_for_each_entry(p, &c->bklist, list) {
		if (!strcmp(name, p->name))
			return p;
	}

	return NULL;
}

static struct netif_fhcfg *get_netif_fhcfg_by_name(struct agent_config *c,
							const char *name)
{
	struct netif_fhcfg *p;

	list_for_each_entry(p, &c->fhlist, list) {
		if (!strcmp(name, p->name))
			return p;
	}

	return NULL;
}

static struct steer_policy *get_steer_policy_by_name(struct netif_fhcfg *c,
							const char *name)
{
	struct steer_policy *p;

	if (!c)
		return NULL;

	list_for_each_entry(p, &c->steer_policylist, list) {
		if (!strcmp(name, p->name))
			return p;
	}

	return NULL;
}

static struct agent_config_radio *get_agent_config_radio(struct agent_config *c,
							const char *ifname)
{
	struct agent_config_radio *p;

	list_for_each_entry(p, &c->radiolist, list) {
		if (!strcmp(ifname, p->name))
			return p;
	}

	return NULL;
}

void stax_add_entry(struct list_head *h, char *sta_macstr)
{
	struct stax *n;

	n = calloc(1, sizeof(struct stax));
	if (n) {
		snprintf(n->macstring, 18, "%s", sta_macstr);
		list_add(&n->list, h);
	}
}

void stax_del_entry(struct list_head *h, char *sta_macstr)
{
	struct stax *s, *tmp;

	list_for_each_entry_safe(s, tmp, h, list) {
		if (!strncmp(s->macstring, sta_macstr, sizeof(s->macstring))) {
			list_del(&s->list);
			free(s);
			return;
		}
	}
}

static int clean_steer_btm_excl(struct agent_config *p)
{
	struct stax *n, *tmp;

	list_for_each_entry_safe(n, tmp, &p->steer_btm_excludelist, list) {
		list_del(&n->list);
		free(n);
	}

	return 0;
}
static int clean_steer_excl(struct agent_config *p)
{
	struct stax *n, *tmp;

	list_for_each_entry_safe(n, tmp, &p->steer_excludelist, list) {
		list_del(&n->list);
		free(n);
	}

	return 0;