entropy: Use POSIX types for format specifiers

[slstatus.git] / components / wifi.c

diff --git a/components/wifi.c b/components/wifi.c
index 591f6ad..9de543b 100644 (file)
--- a/components/wifi.c
+++ b/components/wifi.c
@@ -1,5 +1,4 @@
 /* See LICENSE file for copyright and license details. */
 /* See LICENSE file for copyright and license details. */

-#include <errno.h>

 #include <ifaddrs.h>
 #include <stdio.h>
 #include <string.h>
 #include <ifaddrs.h>
 #include <stdio.h>
 #include <string.h>


@@ -14,7 +13,7 @@
        #include <linux/wireless.h>
 
        const char *
        #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 i, cur;
                int total = 70; /* the max of /proc/net/wireless */


@@ -23,8 +22,11 @@
                char status[5];
                FILE *fp;
 
                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"))) {
                        warn("fopen '%s':", path);
                        return NULL;
                if (!(fp = fopen(path, "r"))) {
                        warn("fopen '%s':", path);
                        return NULL;


@@ -49,11 +51,11 @@
                        return NULL;
                }
 
                        return NULL;
                }
 

-               if (!(datastart = strstr(buf, iface))) {
+               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);
 


@@ -61,7 +63,7 @@
        }
 
        const char *
        }
 
        const char *

-       wifi_essid(const char *iface)
+       wifi_essid(const char *interface)

        {
                static char id[IW_ESSID_MAX_SIZE+1];
                int sockfd;
        {
                static char id[IW_ESSID_MAX_SIZE+1];
                int sockfd;


@@ -69,7 +71,10 @@
 
                memset(&wreq, 0, sizeof(struct iwreq));
                wreq.u.essid.length = IW_ESSID_MAX_SIZE+1;
 
                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 = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
                        warn("socket 'AF_INET':");
 
                if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
                        warn("socket 'AF_INET':");


@@ -100,10 +105,11 @@
        #include <sys/types.h>
 
        static int
        #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;
        {
                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));
 
                memset(&bssid, 0, sizeof(bssid));
                memset(nr, 0, sizeof(struct ieee80211_nodereq));


@@ -111,13 +117,19 @@
                        warn("socket 'AF_INET':");
                        return 0;
                }
                        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) {
                        warn("ioctl 'SIOCG80211BSSID':");
                        close(sockfd);
                        return 0;
                }
                if ((ioctl(sockfd, SIOCG80211BSSID, &bssid)) < 0) {
                        warn("ioctl 'SIOCG80211BSSID':");
                        close(sockfd);
                        return 0;
                }

-               strlcpy(nr->nr_ifname, iface, sizeof(nr->nr_ifname));
+               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':");
                memcpy(&nr->nr_macaddr, bssid.i_bssid, sizeof(nr->nr_macaddr));
                if ((ioctl(sockfd, SIOCG80211NODE, nr)) < 0 && nr->nr_rssi) {
                        warn("ioctl 'SIOCG80211NODE':");


@@ -129,12 +141,12 @@
        }
 
        const char *
        }
 
        const char *

-       wifi_perc(const char *iface)
+       wifi_perc(const char *interface)

        {
                struct ieee80211_nodereq nr;
                int q;
 
        {
                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 {
                        if (nr.nr_max_rssi) {
                                q = IEEE80211_NODEREQ_RSSI(&nr);
                        } else {


@@ -148,11 +160,11 @@
        }
 
        const char *
        }
 
        const char *

-       wifi_essid(const char *iface)
+       wifi_essid(const char *interface)

        {
                struct ieee80211_nodereq nr;
 
        {
                struct ieee80211_nodereq nr;
 

-               if (load_ieee80211_nodereq(iface, &nr)) {
+               if (load_ieee80211_nodereq(interface, &nr)) {

                        return bprintf("%s", nr.nr_nwid);
                }
 
                        return bprintf("%s", nr.nr_nwid);
                }