X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/ca8a146f03622149fbf9378e72b6ca02f25c5e55..7fe240856eef7b56d8ca0b57fd5642dbdc5b89b1:/components/wifi.c

diff --git a/components/wifi.c b/components/wifi.c
index 339667f..b3e1723 100644
--- a/components/wifi.c
+++ b/components/wifi.c
@@ -3,8 +3,8 @@
 #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"
@@ -23,11 +23,13 @@
 		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);
@@ -37,8 +39,7 @@
 		}
 
 		if (!(fp = fopen("/proc/net/wireless", "r"))) {
-			fprintf(stderr, "fopen '/proc/net/wireless': %s\n",
-			        strerror(errno));
+			warn("fopen '/proc/net/wireless':");
 			return NULL;
 		}
 
@@ -71,16 +72,18 @@
 
 		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 = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
-			fprintf(stderr, "socket 'AF_INET': %s\n",
-			        strerror(errno));
+			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;
 		}
@@ -97,6 +100,7 @@
 	#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>
@@ -110,22 +114,19 @@
 		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));
 		if ((ioctl(sockfd, SIOCG80211BSSID, &bssid)) < 0) {
-			fprintf(stderr, "ioctl 'SIOCG80211BSSID': %s\n",
-				strerror(errno));
+			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) {
-			fprintf(stderr, "ioctl 'SIOCG80211NODE': %s\n",
-				strerror(errno));
+			warn("ioctl 'SIOCG80211NODE':");
 			close(sockfd);
 			return 0;
 		}