/* See LICENSE file for copyright and license details. */
-#include <errno.h>
#include <ifaddrs.h>
#include <stdio.h>
#include <string.h>
-#include <sys/socket.h>
#include <sys/ioctl.h>
+#include <sys/socket.h>
#include <unistd.h>
#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>
const char *
- wifi_perc(const char *iface)
+ wifi_perc(const char *interface)
{
- int i, cur;
- 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;
- 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"))) {
- fprintf(stderr, "fopen '%s': %s\n", path,
- strerror(errno));
+ warn("fopen '%s':", path);
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"))) {
- fprintf(stderr, "fopen '/proc/net/wireless': %s\n",
- strerror(errno));
+ warn("fopen '/proc/net/wireless':");
return NULL;
}
return NULL;
}
- if (!(datastart = strstr(buf, iface))) {
+ if (!(datastart = strstr(buf, interface))) {
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);
- return bprintf("%d", (int)((float)cur / total * 100));
+ /* 70 is the max of /proc/net/wireless */
+ return bprintf("%d", (int)((float)cur / 70 * 100));
}
const char *
- wifi_essid(const char *iface)
+ wifi_essid(const char *interface)
{
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",
+ interface) < 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;
}
#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)
+ 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) {
- fprintf(stderr, "socket 'AF_INET': %s\n",
- strerror(errno));
+ warn("socket 'AF_INET':");
return 0;
}
- strlcpy(bssid.i_name, iface, sizeof(bssid.i_name));
+ strlcpy(bssid.i_name, interface, sizeof(bssid.i_name));
if ((ioctl(sockfd, SIOCG80211BSSID, &bssid)) < 0) {
- fprintf(stderr, "ioctl 'SIOCG80211BSSID': %s\n",
- strerror(errno));
+ 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, iface, sizeof(nr->nr_ifname));
- memmove(&nr->nr_macaddr, bssid.i_bssid, sizeof(nr->nr_macaddr));
+ 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) {
- fprintf(stderr, "ioctl 'SIOCG80211NODE': %s\n",
- strerror(errno));
+ warn("ioctl 'SIOCG80211NODE':");
close(sockfd);
return 0;
}
}
const char *
- wifi_perc(const char *iface)
+ wifi_perc(const char *interface)
{
struct ieee80211_nodereq nr;
int q;
- if (load_ieee80211_nodereq(iface, &nr)) {
+ 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)));
+ q = RSSI_TO_PERC(nr.nr_rssi);
}
return bprintf("%d", q);
}
}
const char *
- wifi_essid(const char *iface)
+ wifi_essid(const char *interface)
{
struct ieee80211_nodereq nr;
- if (load_ieee80211_nodereq(iface, &nr)) {
+ if (load_ieee80211_nodereq(interface, &nr)) {
return bprintf("%s", nr.nr_nwid);
}
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;
+ 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;
+ }
+
+ const char *
+ wifi_essid(const char *interface)
+ {
+ char ssid[IEEE80211_NWID_LEN + 1];
+ size_t len;
+ int sockfd;
+ const char *fmt;
+
+ 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