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wifi component on FreeBSD

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This commit is contained in:
Michael Buch 2019-02-13 00:47:23 +00:00 committed by Aaron Marcher
parent 86849d295b
commit e724907cc3
1 changed files with 95 additions and 3 deletions
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98
components/wifi.c
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@ -8,6 +8,11 @@
#include "../util.h"
#define RSSI_TO_PERC(rssi) \
rssi >= -50 ? 100 : \
(rssi <= -100 ? 0 : \
(2 * (rssi + 100)))
#if defined(__linux__)
#include <limits.h>
#include <linux/wireless.h>
@ -150,9 +155,7 @@
if (nr.nr_max_rssi) {
q = IEEE80211_NODEREQ_RSSI(&nr);
} else {
q = nr.nr_rssi >= -50 ? 100 :
(nr.nr_rssi <= -100 ? 0 :
(2 * (nr.nr_rssi + 100)));
q = RSSI_TO_PERC(nr.nr_rssi);
}
return bprintf("%d", q);
}
@ -169,6 +172,95 @@
return bprintf("%s", nr.nr_nwid);
}
return NULL;
}
#elif defined(__FreeBSD__)
#include <net/if.h>
#include <net80211/ieee80211_ioctl.h>
int
load_ieee80211req(int sock, const char *interface, void *data, int type, size_t *len)
{
char warn_buf[256];
struct ieee80211req ireq;
memset(&ireq, 0, sizeof(ireq));
ireq.i_type = type;
ireq.i_data = (caddr_t) data;
ireq.i_len = *len;
strlcpy(ireq.i_name, interface, sizeof(ireq.i_name));
if (ioctl(sock, SIOCG80211, &ireq) < 0) {
snprintf(warn_buf, sizeof(warn_buf),
"ioctl: 'SIOCG80211': %d", type);
warn(warn_buf);
return 0;
}
*len = ireq.i_len;
return 1;
}
const char *
wifi_perc(const char *interface)
{
union {
struct ieee80211req_sta_req sta;
uint8_t buf[24 * 1024];
} info;
uint8_t bssid[IEEE80211_ADDR_LEN];
int rssi_dbm;
int sockfd;
size_t len;
if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
warn("socket 'AF_INET':");
return 0;
}
/* Retreive MAC address of interface */
len = IEEE80211_ADDR_LEN;
if (load_ieee80211req(sockfd, interface, &bssid, IEEE80211_IOC_BSSID, &len))
{
/* Retrieve info on station with above BSSID */
memset(&info, 0, sizeof(info));
memcpy(info.sta.is_u.macaddr, bssid, sizeof(bssid));
len = sizeof(info);
if (load_ieee80211req(sockfd, interface, &info, IEEE80211_IOC_STA_INFO, &len)) {
rssi_dbm = info.sta.info[0].isi_noise +
info.sta.info[0].isi_rssi / 2;
return bprintf("%d", RSSI_TO_PERC(rssi_dbm));
}
}
close(sockfd);
return NULL;
}
const char *
wifi_essid(const char *interface)
{
char ssid[IEEE80211_NWID_LEN + 1];
size_t len;
int sockfd;
if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
warn("socket 'AF_INET':");
return 0;
}
len = sizeof(ssid);
memset(&ssid, 0, len);
if (load_ieee80211req(sockfd, interface, &ssid, IEEE80211_IOC_SSID, &len )) {
if (len < sizeof(ssid))
len += 1;
else
len = sizeof(ssid);
ssid[len - 1] = '\0';
return bprintf("%s", ssid);
}
return NULL;
}
#endif