apitest.c

mobile ip 在linux下的一种实现

/* $Id: apitest.c,v 1.8 2001/08/04 20:55:56 jm Exp $
 * Tool for sending API message - Jari Hautio
 *
 * 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.
 */

#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include "util.h"
#include "agentapi.h"

#define DEFAULT_PATH "api_rw"
#define MYNAME "api_test_socket"

int main(int argc, char *argv[])
{
	char mypath[256];
	int s;
	struct api_msg msg;
	struct sockaddr_un addr;
	socklen_t addrlen;
	unsigned int i;
	int w; /* wait for reply ? */

	addr.sun_family = AF_LOCAL;
	dynamics_strlcpy(addr.sun_path, DEFAULT_PATH, sizeof(addr.sun_path));
	addrlen = sizeof(addr.sun_family) + strlen(DEFAULT_PATH);

	if (argc <= 1) {
		printf("Usage: apitest [-path <api_path>] [-wait] <command> \n"
		       "  path - specifies path for agent api socket\n"
		       "  wait - Waits for reply from agent.\n"
		       "Available commands are:\n"
		       "  connect, locupd, abort, disconnect\n"
		       "Commands can be abbreviated.\n");

		return 0;
	}
	msg.code = API_DUMMY;
	msg.length = 0;
	msg.type = API_CALL_MSG;
	w = 0;
	/* process command line */
	for (i = 1; i < argc; i++) {
		if (strncasecmp(argv[i], "-p", 2) == 0) {
			if (i + 1 < argc) {
				dynamics_strlcpy(addr.sun_path, argv[i + 1],
						 sizeof(addr.sun_path));
				i++;
			} else {
				printf("Path name missing.\n");
				return 0;
			}
		} else if (strncasecmp(argv[i], "c", 1) == 0) {
			msg.code = API_CONNECT;
		} else if (strncasecmp(argv[i], "l", 1) == 0) {
			msg.code = API_UPDATE_LOCATION;
			if (i + 1 < argc && 
			    inet_aton(argv[i + 1],
				      (struct in_addr *) msg.params)) {
				msg.length = 4;
				i++;
			}
		} else if (strncasecmp(argv[i], "a", 1) == 0) {
			msg.code = API_CANCEL;
		} else if (strncasecmp(argv[i], "-w", 2) == 0) {
			w = 1;
		} else if (strncasecmp(argv[i], "d", 1) == 0) {
			msg.code = API_DISCONNECT;
		}
	}
	*mypath = 0;
	getcwd(mypath, sizeof(mypath));
	snprintf(&mypath[strlen(mypath)], 
		 sizeof(mypath) - strlen(mypath), "/%s",
		 MYNAME);
	printf("Sending api call (code=%d). \n\tTo: '%s' \n\tUsing: '%s'.\n",
	       msg.code, addr.sun_path, mypath);

	unlink(mypath);
	s = api_open_socket(mypath, NULL, NULL, 0777);
	if (s < 0) {
		perror("open_socket");
		return 0;
	}

	if (msg.code != API_DUMMY) {
		if (api_send(s, &addr, addrlen, &msg) < 0) {
			perror("api_send");
		} else {
			printf("Call sent.\n");
		}
	}
	if (w) {
		printf("Waiting for reply...\n");
		memset(&msg, 0, sizeof(msg));
		memset(&addr, 0, sizeof(addr));
		i = sizeof(addr);
		if (api_receive(s, &addr, &i, &msg) < 0) {
			perror("api receive");
		} else {
			printf("Reply code = %d.\n", (short int) msg.code);
		}
	}
	close(s);
	unlink(mypath);
	return 0;
}