wifi component on FreeBSD
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@ -8,6 +8,11 @@
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#include "../util.h"
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#define RSSI_TO_PERC(rssi) \
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rssi >= -50 ? 100 : \
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(rssi <= -100 ? 0 : \
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(2 * (rssi + 100)))
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#if defined(__linux__)
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#include <limits.h>
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#include <linux/wireless.h>
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@ -150,9 +155,7 @@
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if (nr.nr_max_rssi) {
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q = IEEE80211_NODEREQ_RSSI(&nr);
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} else {
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q = nr.nr_rssi >= -50 ? 100 :
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(nr.nr_rssi <= -100 ? 0 :
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(2 * (nr.nr_rssi + 100)));
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q = RSSI_TO_PERC(nr.nr_rssi);
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}
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return bprintf("%d", q);
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}
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@ -169,6 +172,95 @@
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return bprintf("%s", nr.nr_nwid);
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}
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return NULL;
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}
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#elif defined(__FreeBSD__)
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#include <net/if.h>
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#include <net80211/ieee80211_ioctl.h>
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int
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load_ieee80211req(int sock, const char *interface, void *data, int type, size_t *len)
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{
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char warn_buf[256];
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struct ieee80211req ireq;
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memset(&ireq, 0, sizeof(ireq));
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ireq.i_type = type;
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ireq.i_data = (caddr_t) data;
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ireq.i_len = *len;
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strlcpy(ireq.i_name, interface, sizeof(ireq.i_name));
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if (ioctl(sock, SIOCG80211, &ireq) < 0) {
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snprintf(warn_buf, sizeof(warn_buf),
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"ioctl: 'SIOCG80211': %d", type);
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warn(warn_buf);
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return 0;
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}
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*len = ireq.i_len;
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return 1;
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}
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const char *
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wifi_perc(const char *interface)
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{
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union {
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struct ieee80211req_sta_req sta;
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uint8_t buf[24 * 1024];
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} info;
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uint8_t bssid[IEEE80211_ADDR_LEN];
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int rssi_dbm;
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int sockfd;
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size_t len;
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if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
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warn("socket 'AF_INET':");
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return 0;
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}
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/* Retreive MAC address of interface */
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len = IEEE80211_ADDR_LEN;
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if (load_ieee80211req(sockfd, interface, &bssid, IEEE80211_IOC_BSSID, &len))
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{
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/* Retrieve info on station with above BSSID */
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memset(&info, 0, sizeof(info));
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memcpy(info.sta.is_u.macaddr, bssid, sizeof(bssid));
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len = sizeof(info);
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if (load_ieee80211req(sockfd, interface, &info, IEEE80211_IOC_STA_INFO, &len)) {
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rssi_dbm = info.sta.info[0].isi_noise +
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info.sta.info[0].isi_rssi / 2;
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return bprintf("%d", RSSI_TO_PERC(rssi_dbm));
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}
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}
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close(sockfd);
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return NULL;
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}
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const char *
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wifi_essid(const char *interface)
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{
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char ssid[IEEE80211_NWID_LEN + 1];
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size_t len;
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int sockfd;
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if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
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warn("socket 'AF_INET':");
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return 0;
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}
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len = sizeof(ssid);
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memset(&ssid, 0, len);
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if (load_ieee80211req(sockfd, interface, &ssid, IEEE80211_IOC_SSID, &len )) {
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if (len < sizeof(ssid))
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len += 1;
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else
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len = sizeof(ssid);
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ssid[len - 1] = '\0';
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return bprintf("%s", ssid);
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}
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return NULL;
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}
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#endif
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