66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
#include <linux/nl80211.h>
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#include <netlink/genl/genl.h>
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#include "ifaces.h"
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#include "netlink.h"
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//https://github.com/torvalds/linux/blob/master/include/uapi/linux/nl80211.h#L4031
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static const int chanwidth[NL80211_SURVEY_INFO_MAX + 1] = {
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[NL80211_CHAN_WIDTH_20_NOHT] = 20,
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[NL80211_CHAN_WIDTH_20] = 20,
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[NL80211_CHAN_WIDTH_40] = 40,
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[NL80211_CHAN_WIDTH_80] = 80,
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[NL80211_CHAN_WIDTH_80P80] = 160,
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[NL80211_CHAN_WIDTH_160] = 160,
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[NL80211_CHAN_WIDTH_5] = 5,
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[NL80211_CHAN_WIDTH_10] = 10,
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};
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static int iface_dump_handler(struct nl_msg *msg, void *arg) {
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struct nlattr *tb[NL80211_ATTR_MAX + 1];
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struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
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struct iface_list **last_next;
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nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL);
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if (!tb[NL80211_ATTR_WIPHY] || !tb[NL80211_ATTR_IFINDEX])
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goto skip;
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#ifdef GLUON
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if(nla_strcmp(tb[NL80211_ATTR_IFNAME], "client") == -1 || nla_strcmp(tb[NL80211_ATTR_IFNAME], "ibss") == -1 || nla_strcmp(tb[NL80211_ATTR_IFNAME], "mesh") == -1)
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goto skip;
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#endif
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// TODO fix add to head list - instatt find last item
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for (last_next = arg; *last_next != NULL; last_next = &(*last_next)->next) {}
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*last_next = malloc(sizeof(**last_next));
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if (!*last_next)
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goto skip;
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(*last_next)->next = NULL;
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(*last_next)->wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
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(*last_next)->ifx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
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(*last_next)->frequency = tb[NL80211_ATTR_WIPHY_FREQ] ? nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]) : 0;
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(*last_next)->txpower = tb[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] ? nla_get_u32(tb[NL80211_ATTR_WIPHY_TX_POWER_LEVEL]) : 0;
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(*last_next)->type = tb[NL80211_ATTR_IFTYPE] ? nla_get_u32(tb[NL80211_ATTR_IFTYPE]) : 0;
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if(tb[NL80211_ATTR_MAC]) {
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mac_addr_n2a((*last_next)->mac_addr, nla_data(tb[NL80211_ATTR_MAC]));
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}
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int chanwidth_id = nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]);
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if(chanwidth[chanwidth_id])
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(*last_next)->chanwidth = tb[NL80211_ATTR_CHANNEL_WIDTH] ? chanwidth[chanwidth_id] : 0;
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skip:
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return NL_SKIP;
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}
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struct iface_list *get_ifaces() {
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struct iface_list *ifaces = NULL;
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nl_send_dump(&iface_dump_handler, &ifaces, NL80211_CMD_GET_INTERFACE, 0);
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return ifaces;
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}
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