fahtml.c

mobile ip 在linux下的一种实现

/* $Id: fahtml.c,v 1.3 2001/07/11 15:12:45 jm Exp $
 * Statistics information of FA in HTML format to stdout
 *
 * Dynamic hierarchial IP tunnel
 * Copyright (C) 1998-2001, Dynamics group
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation. See README and COPYING for
 * more details.
 */

#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif

#include <stdio.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <sys/param.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <signal.h>
#include <getopt.h>

#include "util.h"
#include "dyn_falib.h"

static char *default_path = "/var/run/dynamics_fa_read";

#define MAX_TUNNELS 128
#define PID_FILE "/var/run/fastatus.pid"

static void handle_request()
{
	struct dynamics_tunnel_info tinfo;
	struct dynamics_fa_status status;
	dyn_tunnel_id tunnels[MAX_TUNNELS];
	int r, c, i, len;
	char mnaddr[64], haaddr[64];

	r = dynamics_fa_get_status(&status, 1);
	if (r != API_SUCCESS) {
		printf("API call failed\n");
		return;
	}

	printf("<BIG>Dynamics Foreign Agent</BIG>\n"
	       "version %s\n<P>\n", status.version);

	printf("<TABLE BORDER=1>\n"
	       "<TR><TH>MN addr<TH>care-of addr<TH>HA addr"
	       "<TH>created<TH>expires<TH>SPI<TH>conf.\n");

	c = MAX_TUNNELS;
	r = dynamics_fa_get_tunnels(&c, tunnels, 1);
	if (r != API_SUCCESS) {
		printf("error=%i\n", r);
		return;
	}

	for (i = 0; i < c; i++) {
		len = sizeof(tinfo);
		r = dynamics_fa_get_tunnel_info(tunnels[i], &tinfo, &len, 1);
		if (r != API_SUCCESS || len != sizeof(tinfo)) {
			printf("API call failed\n");
			continue;
		}
		snprintf(mnaddr, sizeof(mnaddr), "%s",
			 inet_ntoa(tinfo.mn_addr));
		snprintf(haaddr, sizeof(haaddr), "%s",
			 inet_ntoa(tinfo.ha_addr));
		printf("<TR><TD><A HREF=\"user.php?mn=%s&ha=%s\">%s</A>\n",
		       mnaddr, haaddr, mnaddr);
		printf("<TD>%s\n",
		       inet_ntoa(tinfo.co_addr));
		printf("<TD>%s\n", haaddr);
		printf("<TD><SMALL>%s</SMALL>",
		       ctime(&tinfo.creation_time));
		printf("<TD><SMALL>%s</SMALL>",
		       ctime(&tinfo.expiration_time));
		printf("<TD>%i<TD>%i\n",
		       tinfo.spi, tinfo.confirmed);
	}

	printf("</TABLE><P>\n");

	printf("<TABLE BORDER=1><TR><TD>"
	       "current tunnels %i\n<TD>requests accepted %li"
	       "\n"
	       "<TR><TD>advertisements sent %li<TD>requests rejected %li"
	       "</TABLE><P>\n",
	       status.tunnel_count, status.req_accepted,
	       status.adv_sent, status.req_rejected);

}

int main(int argc, char *argv[])
{
	char *path = NULL;
	int c;


	while (1) {
		int option_index = 0;
		static struct option long_options[] = {
			{0, 0, 0, 0}
		};
		
		c = getopt_long (argc, argv, "s:",
				 long_options, &option_index);
		if (c == -1)
			break;
		
		switch (c) {
		case 's':
			path = malloc(MAXPATHLEN);
			if (path == NULL) {
				fprintf(stderr, "malloc for path: %s\n",
					strerror(errno));
				exit(1);
			}
			dynamics_strlcpy(path, optarg, MAXPATHLEN);
			break;
		case '?':
			fprintf(stderr, "fahtml -s [API socket]\n");
			exit(1);
		default:
			printf ("?? getopt returned character code "
				"0%o ??\n", c);
		}
	}

	if (path == NULL)
		path = default_path;

	if (dynamics_fa_init(path) != API_SUCCESS) {
		fprintf(stderr, "API initialization failed\n");
		exit(1);
	}

	handle_request();

	return 0;
}