#include <linux/nl80211.h>
#include <netlink/genl/genl.h>

#include "ifaces.h"
#include "netlink.h"

static int iface_dump_handler(struct nl_msg *msg, void *arg) {
	struct nlattr *tb[NL80211_ATTR_MAX + 1];
	struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
	struct iface_list **last_next;

	nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL);

	if (!tb[NL80211_ATTR_WIPHY] || !tb[NL80211_ATTR_IFINDEX])
		goto skip;

	#ifdef GLUON
	if(nla_strcmp(tb[NL80211_ATTR_IFNAME], "client") == -1)
	  goto skip;
	#endif

	// TODO fix add to head list - instatt find last item
	for (last_next = arg; *last_next != NULL; last_next = &(*last_next)->next) {}

	*last_next = malloc(sizeof(**last_next));
	if (!*last_next)
		goto skip;
	(*last_next)->next = NULL;
	(*last_next)->wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
	(*last_next)->ifx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
	(*last_next)->frequency = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
	(*last_next)->txpower = nla_get_u32(tb[NL80211_ATTR_WIPHY_TX_POWER_LEVEL]);

skip:
	return NL_SKIP;
}

struct iface_list *get_ifaces() {
	struct iface_list *ifaces = NULL;
	nl_send_dump(&iface_dump_handler, &ifaces, NL80211_CMD_GET_INTERFACE, 0);
	return ifaces;
}