/* See LICENSE file for copyright and license details. */
+#include <errno.h>
+#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__)
- #include <errno.h>
- #include <ifaddrs.h>
#include <limits.h>
#include <linux/wireless.h>
- #include <sys/socket.h>
- #include <stdio.h>
- #include <string.h>
- #include <sys/ioctl.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");
+ if (esnprintf(path, sizeof(path),
+ "/sys/class/net/%s/operstate",
+ iface) < 0) {
+ return NULL;
+ }
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);
}
if (!(fp = fopen("/proc/net/wireless", "r"))) {
- fprintf(stderr, "fopen '/proc/net/wireless': %s\n",
- strerror(errno));
+ warn("fopen '/proc/net/wireless':");
return NULL;
}
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);
+ return bprintf("%d", (int)((float)cur / total * 100));
}
const char *
wifi_essid(const char *iface)
{
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;
- snprintf(wreq.ifr_name, sizeof(wreq.ifr_name), "%s", iface);
+ if (esnprintf(wreq.ifr_name, sizeof(wreq.ifr_name),
+ "%s", iface) < 0) {
+ return NULL;
+ }
- if (sockfd < 0) {
- 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;
if (ioctl(sockfd,SIOCGIWESSID, &wreq) < 0) {
- fprintf(stderr, "ioctl 'SIOCGIWESSID': %s\n", strerror(errno));
+ warn("ioctl 'SIOCGIWESSID':");
close(sockfd);
return NULL;
}
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 *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)) < 0) {
+ warn("socket 'AF_INET':");
+ return 0;
+ }
+ strlcpy(bssid.i_name, iface, sizeof(bssid.i_name));
+ if ((ioctl(sockfd, SIOCG80211BSSID, &bssid)) < 0) {
+ warn("ioctl 'SIOCG80211BSSID':");
+ close(sockfd);
+ return 0;
+ }
+ strlcpy(nr->nr_ifname, iface, 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 *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