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Use the sioctl_open(3) OpenBSD API to access vol
[slstatus.git] / components / wifi.c
diff --git a/components/wifi.c b/components/wifi.c
index 9ecb8e1..92c252e 100644 (file)
--- a/components/wifi.c
+++ b/components/wifi.c
@@ -1,89 +1,272 @@
 /* See LICENSE file for copyright and license details. */
 /* See LICENSE file for copyright and license details. */
-#include <err.h>
 #include <ifaddrs.h>
 #include <ifaddrs.h>
-#include <linux/wireless.h>
-#include <sys/socket.h>
 #include <stdio.h>
 #include <stdio.h>
-#include <limits.h>
 #include <string.h>
 #include <sys/ioctl.h>
 #include <string.h>
 #include <sys/ioctl.h>
+#include <sys/socket.h>
 #include <unistd.h>
 
 #include "../util.h"
 
 #include <unistd.h>
 
 #include "../util.h"
 
-const char *
-wifi_perc(const char *iface)
-{
-       int i, cur;
-       float perc;
-       int total = 70; /* the max of /proc/net/wireless */
-       char *p, *datastart;
-       char path[PATH_MAX];
-       char status[5];
-       FILE *fp;
-
-       snprintf(path, sizeof(path), "%s%s%s", "/sys/class/net/", iface, "/operstate");
-       fp = fopen(path, "r");
-       if (fp == NULL) {
-               warn("Failed to open file %s", path);
-               return NULL;
-       }
-       p = fgets(status, 5, fp);
-       fclose(fp);
-       if(!p || strcmp(status, "up\n") != 0) {
-               return NULL;
+#define RSSI_TO_PERC(rssi) \
+                       rssi >= -50 ? 100 : \
+                       (rssi <= -100 ? 0 : \
+                       (2 * (rssi + 100)))
+
+#if defined(__linux__)
+       #include <limits.h>
+       #include <linux/wireless.h>
+
+       const char *
+       wifi_perc(const char *interface)
+       {
+               int cur;
+               size_t i;
+               char *p, *datastart;
+               char path[PATH_MAX];
+               char status[5];
+               FILE *fp;
+
+               if (esnprintf(path, sizeof(path), "/sys/class/net/%s/operstate",
+                             interface) < 0) {
+                       return NULL;
+               }
+               if (!(fp = fopen(path, "r"))) {
+                       warn("fopen '%s':", path);
+                       return NULL;
+               }
+               p = fgets(status, 5, fp);
+               fclose(fp);
+               if (!p || strcmp(status, "up\n") != 0) {
+                       return NULL;
+               }
+
+               if (!(fp = fopen("/proc/net/wireless", "r"))) {
+                       warn("fopen '/proc/net/wireless':");
+                       return NULL;
+               }
+
+               for (i = 0; i < 3; i++) {
+                       if (!(p = fgets(buf, sizeof(buf) - 1, fp)))
+                               break;
+               }
+               fclose(fp);
+               if (i < 2 || !p) {
+                       return NULL;
+               }
+
+               if (!(datastart = strstr(buf, interface))) {
+                       return NULL;
+               }
+
+               datastart = (datastart+(strlen(interface)+1));
+               sscanf(datastart + 1, " %*d   %d  %*d  %*d\t\t  %*d\t   "
+                      "%*d\t\t%*d\t\t %*d\t  %*d\t\t %*d", &cur);
+
+               /* 70 is the max of /proc/net/wireless */
+               return bprintf("%d", (int)((float)cur / 70 * 100));
        }
 
        }
 
-       fp = fopen("/proc/net/wireless", "r");
-       if (fp == NULL) {
-               warn("Failed to open file /proc/net/wireless");
-               return NULL;
+       const char *
+       wifi_essid(const char *interface)
+       {
+               static char id[IW_ESSID_MAX_SIZE+1];
+               int sockfd;
+               struct iwreq wreq;
+
+               memset(&wreq, 0, sizeof(struct iwreq));
+               wreq.u.essid.length = IW_ESSID_MAX_SIZE+1;
+               if (esnprintf(wreq.ifr_name, sizeof(wreq.ifr_name), "%s",
+                             interface) < 0) {
+                       return NULL;
+               }
+
+               if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+                       warn("socket 'AF_INET':");
+                       return NULL;
+               }
+               wreq.u.essid.pointer = id;
+               if (ioctl(sockfd,SIOCGIWESSID, &wreq) < 0) {
+                       warn("ioctl 'SIOCGIWESSID':");
+                       close(sockfd);
+                       return NULL;
+               }
+
+               close(sockfd);
+
+               if (!strcmp(id, "")) {
+                       return NULL;
+               }
+
+               return id;
        }
        }
+#elif defined(__OpenBSD__)
+       #include <net/if.h>
+       #include <net/if_media.h>
+       #include <net80211/ieee80211.h>
+       #include <sys/select.h> /* before <sys/ieee80211_ioctl.h> for NBBY */
+       #include <net80211/ieee80211_ioctl.h>
+       #include <stdlib.h>
+       #include <sys/types.h>
+
+       static int
+       load_ieee80211_nodereq(const char *interface, struct ieee80211_nodereq *nr)
+       {
+               struct ieee80211_bssid bssid;
+               int sockfd;
+               uint8_t zero_bssid[IEEE80211_ADDR_LEN];
 
 
-       for (i = 0; i < 3; i++) {
-               if (!(p = fgets(buf, sizeof(buf) - 1, fp)))
-                       break;
+               memset(&bssid, 0, sizeof(bssid));
+               memset(nr, 0, sizeof(struct ieee80211_nodereq));
+               if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+                       warn("socket 'AF_INET':");
+                       return 0;
+               }
+               strlcpy(bssid.i_name, interface, sizeof(bssid.i_name));
+               if ((ioctl(sockfd, SIOCG80211BSSID, &bssid)) < 0) {
+                       warn("ioctl 'SIOCG80211BSSID':");
+                       close(sockfd);
+                       return 0;
+               }
+               memset(&zero_bssid, 0, sizeof(zero_bssid));
+               if (memcmp(bssid.i_bssid, zero_bssid,
+                   IEEE80211_ADDR_LEN) == 0) {
+                       close(sockfd);
+                       return 0;
+               }
+               strlcpy(nr->nr_ifname, interface, sizeof(nr->nr_ifname));
+               memcpy(&nr->nr_macaddr, bssid.i_bssid, sizeof(nr->nr_macaddr));
+               if ((ioctl(sockfd, SIOCG80211NODE, nr)) < 0 && nr->nr_rssi) {
+                       warn("ioctl 'SIOCG80211NODE':");
+                       close(sockfd);
+                       return 0;
+               }
+
+               return close(sockfd), 1;
        }
        }
-       fclose(fp);
-       if (i < 2 || !p)
-               return NULL;
 
 
-       if ((datastart = strstr(buf, iface)) == NULL)
+       const char *
+       wifi_perc(const char *interface)
+       {
+               struct ieee80211_nodereq nr;
+               int q;
+
+               if (load_ieee80211_nodereq(interface, &nr)) {
+                       if (nr.nr_max_rssi) {
+                               q = IEEE80211_NODEREQ_RSSI(&nr);
+                       } else {
+                               q = RSSI_TO_PERC(nr.nr_rssi);
+                       }
+                       return bprintf("%d", q);
+               }
+
                return NULL;
                return NULL;
+       }
 
 
-       datastart = (datastart+(strlen(iface)+1));
-       sscanf(datastart + 1, " %*d   %d  %*d  %*d                %*d      %*d          %*d              %*d      %*d            %*d", &cur);
+       const char *
+       wifi_essid(const char *interface)
+       {
+               struct ieee80211_nodereq nr;
 
 
-       perc = (float)cur / total * 100.0;
+               if (load_ieee80211_nodereq(interface, &nr)) {
+                       return bprintf("%s", nr.nr_nwid);
+               }
 
 
-       return bprintf("%.0f", perc);
-}
+               return NULL;
+       }
+#elif defined(__FreeBSD__)
+       #include <net/if.h>
+       #include <net80211/ieee80211_ioctl.h>
 
 
-const char *
-wifi_essid(const char *iface)
-{
-       static char id[IW_ESSID_MAX_SIZE+1];
-       int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
-       struct iwreq wreq;
+       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;
 
 
-       memset(&wreq, 0, sizeof(struct iwreq));
-       wreq.u.essid.length = IW_ESSID_MAX_SIZE+1;
-       snprintf(wreq.ifr_name, sizeof(wreq.ifr_name), "%s", iface);
+               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;
+               }
 
 
-       if (sockfd == -1) {
-               warn("Failed to get ESSID for interface %s", iface);
-               return NULL;
+               *len = ireq.i_len;
+               return 1;
        }
        }
-       wreq.u.essid.pointer = id;
-       if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) {
-               warn("Failed to get ESSID for interface %s", iface);
-               return NULL;
+
+       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;
+               const char *fmt;
+
+               if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+                       warn("socket 'AF_INET':");
+                       return NULL;
+               }
+
+               /* Retreive MAC address of interface */
+               len = IEEE80211_ADDR_LEN;
+               fmt = NULL;
+               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;
+
+                               fmt = bprintf("%d", RSSI_TO_PERC(rssi_dbm));
+                       }
+               }
+
+               close(sockfd);
+               return fmt;
        }
 
        }
 
-       close(sockfd);
+       const char *
+       wifi_essid(const char *interface)
+       {
+               char ssid[IEEE80211_NWID_LEN + 1];
+               size_t len;
+               int sockfd;
+               const char *fmt;
 
 
-       if (strcmp(id, "") == 0)
-               return NULL;
-       else
-               return id;
-}
+               if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+                       warn("socket 'AF_INET':");
+                       return NULL;
+               }
+
+               fmt = NULL;
+               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';
+                       fmt = bprintf("%s", ssid);
+               }
+
+               close(sockfd);
+               return fmt;
+       }
+#endif