/* vi: set sw=4 ts=4: *//* * Licensed under the GPL v2 or later, see the file LICENSE in this tarball. */#include <fcntl.h>#include <string.h>#include <stdlib.h>#include <stdio.h>#include <sys/wait.h>#include <arpa/inet.h>#include <netdb.h>#include <netinet/in.h>#include <stdio.h>#include <sys/socket.h>#include <unistd.h>#include <getopt.h>#include <time.h>#include "dhcpd.h"#include "leases.h"#include "libbb_udhcp.h"#define REMAINING 0#define ABSOLUTE 1#ifndef IN_BUSYBOXstatic void ATTRIBUTE_NORETURN show_usage(void){	printf("Usage: dumpleases -f <file> -[r|a]\n\n""  -f, --file=FILENAME             Leases file to load\n""  -r, --remaining                 Interepret lease times as time remaining\n""  -a, --absolute                  Interepret lease times as expire time\n");	exit(0);}#else#define show_usage bb_show_usage#endif#ifdef IN_BUSYBOXint dumpleases_main(int argc, char *argv[])#elseint main(int argc, char *argv[])#endif{	FILE *fp;	int i, c, mode = REMAINING;	long expires;	const char *file = LEASES_FILE;	struct dhcpOfferedAddr lease;	struct in_addr addr;	static const struct option options[] = {		{"absolute", 0, 0, 'a'},		{"remaining", 0, 0, 'r'},		{"file", 1, 0, 'f'},		{0, 0, 0, 0}	};	while (1) {		int option_index = 0;		c = getopt_long(argc, argv, "arf:", options, &option_index);		if (c == -1) break;		switch (c) {		case 'a': mode = ABSOLUTE; break;		case 'r': mode = REMAINING; break;		case 'f':			file = optarg;			break;		default:			show_usage();		}	}	fp = xfopen(file, "r");	printf("Mac Address       IP-Address      Expires %s\n", mode == REMAINING ? "in" : "at");	/*     "00:00:00:00:00:00 255.255.255.255 Wed Jun 30 21:49:08 1993" */	while (fread(&lease, sizeof(lease), 1, fp)) {		for (i = 0; i < 6; i++) {			printf("%02x", lease.chaddr[i]);			if (i != 5) printf(":");		}		addr.s_addr = lease.yiaddr;		printf(" %-15s", inet_ntoa(addr));		expires = ntohl(lease.expires);		printf(" ");		if (mode == REMAINING) {			if (!expires) printf("expired\n");			else {				if (expires > 60*60*24) {					printf("%ld days, ", expires / (60*60*24));					expires %= 60*60*24;				}				if (expires > 60*60) {					printf("%ld hours, ", expires / (60*60));					expires %= 60*60;				}				if (expires > 60) {					printf("%ld minutes, ", expires / 60);					expires %= 60;				}				printf("%ld seconds\n", expires);			}		} else printf("%s", ctime(&expires));	}	fclose(fp);	return 0;}