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Fix whitespace
[slstatus.git] / components / wifi.c
diff --git a/components/wifi.c b/components/wifi.c
index 7cd2702..8863252 100644 (file)
--- a/components/wifi.c
+++ b/components/wifi.c
@@ -1,44 +1,43 @@
 /* See LICENSE file for copyright and license details. */
 /* See LICENSE file for copyright and license details. */
+#include <ifaddrs.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include "../util.h"
+
 #if defined(__linux__)
 #if defined(__linux__)
-       #include <errno.h>
-       #include <ifaddrs.h>
-       #include <linux/wireless.h>
-       #include <sys/socket.h>
-       #include <stdio.h>
        #include <limits.h>
        #include <limits.h>
-       #include <string.h>
-       #include <sys/ioctl.h>
-       #include <unistd.h>
-
-       #include "../util.h"
+       #include <linux/wireless.h>
 
        const char *
 
        const char *
-       wifi_perc(const char *iface)
+       wifi_perc(const char *interface)
        {
        {
-               int i, cur;
-               float perc;
-               int total = 70; /* the max of /proc/net/wireless */
+               int cur;
+               size_t i;
                char *p, *datastart;
                char path[PATH_MAX];
                char status[5];
                FILE *fp;
 
                char *p, *datastart;
                char path[PATH_MAX];
                char status[5];
                FILE *fp;
 
-               snprintf(path, sizeof(path), "%s%s%s", "/sys/class/net/", iface,
-                        "/operstate");
+               if (esnprintf(path, sizeof(path), "/sys/class/net/%s/operstate",
+                             interface) < 0) {
+                       return NULL;
+               }
                if (!(fp = fopen(path, "r"))) {
                if (!(fp = fopen(path, "r"))) {
-                       fprintf(stderr, "fopen '%s': %s\n", path,
-                               strerror(errno));
+                       warn("fopen '%s':", path);
                        return NULL;
                }
                p = fgets(status, 5, fp);
                fclose(fp);
                        return NULL;
                }
                p = fgets(status, 5, fp);
                fclose(fp);
-               if(!p || strcmp(status, "up\n") != 0) {
+               if (!p || strcmp(status, "up\n") != 0) {
                        return NULL;
                }
 
                if (!(fp = fopen("/proc/net/wireless", "r"))) {
                        return NULL;
                }
 
                if (!(fp = fopen("/proc/net/wireless", "r"))) {
-                       fprintf(stderr, "fopen '/proc/net/wireless': %s\n",
-                               strerror(errno));
+                       warn("fopen '/proc/net/wireless':");
                        return NULL;
                }
 
                        return NULL;
                }
 
@@ -47,52 +46,129 @@
                                break;
                }
                fclose(fp);
                                break;
                }
                fclose(fp);
-               if (i < 2 || !p)
+               if (i < 2 || !p) {
                        return NULL;
                        return NULL;
+               }
 
 
-               if ((datastart = strstr(buf, iface)) == NULL)
+               if (!(datastart = strstr(buf, interface))) {
                        return NULL;
                        return NULL;
+               }
 
 
-               datastart = (datastart+(strlen(iface)+1));
+               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);
 
                sscanf(datastart + 1, " %*d   %d  %*d  %*d\t\t  %*d\t   "
                       "%*d\t\t%*d\t\t %*d\t  %*d\t\t %*d", &cur);
 
-               perc = (float)cur / total * 100.0;
-
-               return bprintf("%.0f", perc);
+               /* 70 is the max of /proc/net/wireless */
+               return bprintf("%d", (int)((float)cur / 70 * 100));
        }
 
        const char *
        }
 
        const char *
-       wifi_essid(const char *iface)
+       wifi_essid(const char *interface)
        {
                static char id[IW_ESSID_MAX_SIZE+1];
        {
                static char id[IW_ESSID_MAX_SIZE+1];
-               int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
+               int sockfd;
                struct iwreq wreq;
 
                memset(&wreq, 0, sizeof(struct iwreq));
                wreq.u.essid.length = IW_ESSID_MAX_SIZE+1;
                struct iwreq wreq;
 
                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);
+               if (esnprintf(wreq.ifr_name, sizeof(wreq.ifr_name), "%s",
+                             interface) < 0) {
+                       return NULL;
+               }
 
 
-               if (sockfd == -1) {
-                       fprintf(stderr, "socket 'AF_INET': %s\n",
-                               strerror(errno));
+               if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+                       warn("socket 'AF_INET':");
                        return NULL;
                }
                wreq.u.essid.pointer = id;
                        return NULL;
                }
                wreq.u.essid.pointer = id;
-               if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) {
-                       fprintf(stderr, "ioctl 'SIOCGIWESSID': %s\n",
-                               strerror(errno));
+               if (ioctl(sockfd,SIOCGIWESSID, &wreq) < 0) {
+                       warn("ioctl 'SIOCGIWESSID':");
                        close(sockfd);
                        return NULL;
                }
 
                close(sockfd);
 
                        close(sockfd);
                        return NULL;
                }
 
                close(sockfd);
 
-               if (strcmp(id, "") == 0)
+               if (!strcmp(id, "")) {
                        return NULL;
                        return NULL;
+               }
 
                return id;
        }
 #elif defined(__OpenBSD__)
 
                return id;
        }
 #elif defined(__OpenBSD__)
-       /* unimplemented */
+       #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];
+
+               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;
+       }
+
+       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 = 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 *interface)
+       {
+               struct ieee80211_nodereq nr;
+
+               if (load_ieee80211_nodereq(interface, &nr)) {
+                       return bprintf("%s", nr.nr_nwid);
+               }
+
+               return NULL;
+       }
 #endif
 #endif