39 lines
1.0 KiB
C
39 lines
1.0 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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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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int wiphy;
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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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wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
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for (last_next = arg; *last_next != NULL; last_next = &(*last_next)->next) {
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if ((*last_next)->wiphy == wiphy)
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goto skip;
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}
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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)->ifx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
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(*last_next)->wiphy = wiphy;
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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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