wifi component on FreeBSD - slstatus - status monitor
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---
(DIR) commit e724907cc37749907cb8c63031d9fb35ef46a657
(DIR) parent 86849d295b1eb9e18746d8a4fa196fe7b9dce0dc
(HTM) Author: Michael Buch <michaelbuch12@gmail.com>
Date: Wed, 13 Feb 2019 00:47:23 +0000
wifi component on FreeBSD
Diffstat:
M components/wifi.c | 98 ++++++++++++++++++++++++++++++-
1 file changed, 95 insertions(+), 3 deletions(-)
---
(DIR) diff --git a/components/wifi.c b/components/wifi.c
@@ -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);
}
@@ -171,4 +174,93 @@
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