+wifi_perc(const char *wificard)
+{
+ int bufsize = 255;
+ int strength;
+ char buf[bufsize];
+ char *datastart;
+ char path[64];
+ char status[5];
+ char needle[sizeof wificard + 1];
+ FILE *fp;
+
+ /* generate the path name */
+ memset(path, 0, sizeof path);
+ strlcat(path, "/sys/class/net/", sizeof(path));
+ strlcat(path, wificard, sizeof(path));
+ strlcat(path, "/operstate", sizeof(path));
+
+ /* open wifi file */
+ if(!(fp = fopen(path, "r"))) {
+ fprintf(stderr, "Error opening wifi operstate file.\n");
+ return smprintf(unknowntext);
+ }
+
+ /* read the status */
+ fgets(status, 5, fp);
+
+ /* close wifi file */
+ fclose(fp);
+
+ /* check if interface down */
+ if(strcmp(status, "up\n") != 0) {
+ return smprintf(unknowntext);
+ }
+
+ /* open wifi file */
+ if (!(fp = fopen("/proc/net/wireless", "r"))) {
+ fprintf(stderr, "Error opening wireless file.\n");
+ return smprintf(unknowntext);
+ }
+
+ /* extract the signal strength */
+ strlcpy(needle, wificard, sizeof(needle));
+ strlcat(needle, ":", sizeof(needle));
+ fgets(buf, bufsize, fp);
+ fgets(buf, bufsize, fp);
+ fgets(buf, bufsize, fp);
+ if ((datastart = strstr(buf, needle)) != NULL) {
+ datastart = strstr(buf, ":");
+ sscanf(datastart + 1, " %*d %d %*d %*d %*d %*d %*d %*d %*d %*d", &strength);
+ }
+
+ /* close wifi file */
+ fclose(fp);
+
+ /* return strength in percent */
+ return smprintf("%d%%", strength);
+}
+
+/* wifi essid */
+char *
+wifi_essid(const char *wificard)