added wifi functionality for openbsd

display ESSID and signal strength percentage

diff --git a/components/wifi.c b/components/wifi.c
index 24dca362fd5348af2c81dea11cf3af5597c13ff9..edbcc01701d186f6e876c0ac3559f0938314ef9a 100644 (file)
--- a/components/wifi.c
+++ b/components/wifi.c
@@ -93,5 +93,79 @@
                return id;
        }
 #elif defined(__OpenBSD__)
-       /* unimplemented */
+       #include <stdio.h>
+       #include <stdlib.h>
+       #include <string.h>
+       #include <errno.h>
+       #include <ifaddrs.h>
+       #include <unistd.h>
+       #include <sys/ioctl.h>
+       #include <sys/types.h>
+       #include <sys/socket.h>
+       #include <net/if.h>
+       #include <net/if_media.h>
+       #include <net80211/ieee80211.h>
+       #include <net80211/ieee80211_ioctl.h>
+
+       #include "../util.h"
+
+       static int
+       load_ieee80211_nodereq(const char *iface, struct ieee80211_nodereq *nr)
+       {
+               struct ieee80211_bssid bssid;
+               int sockfd;
+               memset(&bssid, 0, sizeof(bssid);
+               memset(nr, 0, sizeof(struct ieee80211_nodereq));
+               if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) {
+                       fprintf(stderr, "socket 'AF_INET': %s\n",
+                               strerror(errno));
+                       return 0;
+               }
+               strlcpy(bssid.i_name, iface, sizeof(bssid.i_name));
+               if ((ioctl(sockfd, SIOCG80211BSSID, &bssid)) == -1) {
+                       fprintf(stderr, "ioctl 'SIOCG80211BSSID': %s\n",
+                               strerror(errno));
+                       close(sockfd);
+                       return 0;
+               }
+               strlcpy(nr->nr_ifname, iface, sizeof(nr->nr_ifname));
+               memmove(&nr->nr_macaddr, bssid.i_bssid, sizeof(nr->nr_macaddr));
+               if ((ioctl(sockfd, SIOCG80211NODE, nr)) == -1 && nr->nr_rssi) {
+                       fprintf(stderr, "ioctl 'SIOCG80211NODE': %s\n",
+                               strerror(errno));
+                       close(sockfd);
+                       return 0;
+               }
+               return close(sockfd), 1;
+
+       }
+
+       const char *
+       wifi_perc(const char *iface)
+       {
+               struct ieee80211_nodereq nr;
+               int q;
+
+               if (load_ieee80211_nodereq(iface, &nr)) {
+                       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)));
+                       return bprintf("%d", q);
+               }
+               return NULL;
+       }
+
+       const char *
+       wifi_essid(const char *iface)
+       {
+               struct ieee80211_nodereq nr;
+
+               if (load_ieee80211_nodereq(iface, &nr)) {
+                       return bprintf("%s", nr.nr_nwid);
+               }
+               return NULL;
+       }
+
 #endif