memory related fixes & adjustments

dongle.c

@@ -345,9 +345,11 @@ char *get_device_name(char *dir_name)
 	while (!list_empty(&stack) && !name) {
 		dr = pop(&stack);
 		dir = opendir(dr->path);
-		if (!dir)
+		if (!dir) {
+			free(dr->path);
+			free(dr);
 			continue;
-
+		}
 		push(dr, &visited);
 
 		while ((de = readdir(dir)) != NULL) {
@@ -531,13 +533,12 @@ char *get_device_ip(char *device_name)
 		goto fail;
 	}
 
-	route = (char *)malloc(1024);
+	route = (char *)calloc(1, 1024);
 	if (!route) {
-		perror("malloc");
+		perror("calloc");
 		goto fail_route;
 	}
 
-	memset(route, 0, 1024);
 	while ((fgets(route, 1024, fp)) != NULL) {
 		remove_newline(route);
 
@@ -559,9 +560,10 @@ char *get_device_ip(char *device_name)
 
 		addr.s_addr = strtoul(destination, NULL, IPV4_MAX);
 		inet_ntop(AF_INET, &(addr.s_addr), ipv4_addr, IPV4_MAX);
-		printf("ipv4_addr %s\n", ipv4_addr);
+		//printf("ipv4_addr %s\n", ipv4_addr);
 	}
 
+	free(route);
 	free(iface);
 	free(destination);
 	free(gateway);