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/*	$OpenBSD: bgpctl.c,v 1.6 2004/01/03 20:39:51 henning Exp $ */

/*
 * Copyright (c) 2003 Henning Brauer <henning@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <err.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#include "bgpd.h"
#include "session.h"

int	main(int, char *[]);
void	summary_head(void);
int	summary_msg(struct imsg *);

struct imsgbuf	ibuf;

static const char *statenames[] = {
	"None",
	"Idle",
	"Connect",
	"Active",
	"OpenSent",
	"OpenConfirm",
	"Established"
};

enum views {
	VIEW_SUMMARY
};

int
main(int argc, char *argv[])
{
	struct sockaddr_un	 sun;
	int			 fd, n, done;
	struct imsg		 imsg;
	enum views		 view = VIEW_SUMMARY;

	if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
		err(1, "control_init: socket");
		exit(1);
	}

	bzero(&sun, sizeof(sun));
	sun.sun_family = AF_UNIX;
	strlcpy(sun.sun_path, SOCKET_NAME, sizeof(sun.sun_path));
	if (connect(fd, (struct sockaddr *)&sun, sizeof(sun)) == -1) {
		err(1, "connect: %s", SOCKET_NAME);
		exit(1);
	}

	imsg_init(&ibuf, fd);
	done = 0;

	switch (view) {
	case VIEW_SUMMARY:
		imsg_compose(&ibuf, IMSG_CTL_SHOW_NEIGHBOR, 0, NULL, 0);
		summary_head();
	}

	while (!done) {
		if ((n = imsg_read(&ibuf)) == -1)
			break;
		if (n == 0)
			errx(1, "pipe closed");

		while (!done) {
			if ((n = imsg_get(&ibuf, &imsg)) == -1)
				errx(1, "imsg_get error");
			if (n == 0) {
				done = 1;
				break;
			}
			switch (view) {
			case VIEW_SUMMARY:
				done = summary_msg(&imsg);
			}
			imsg_free(&imsg);
		}
	}
	close(fd);
}

void
summary_head(void)
{
	printf("%-15s %-5s %s\n", "Neighbor", "AS", "State");
}

int
summary_msg(struct imsg *imsg)
{
	struct peer		*p;

	switch (imsg->hdr.type) {
	case IMSG_CTL_SHOW_NEIGHBOR:
		p = imsg->data;
		printf("%-15s %5u %s\n",
		    inet_ntoa(p->conf.remote_addr.sin_addr),
		    p->conf.remote_as, statenames[p->state]);
		break;
	case IMSG_CTL_END:
		return (1);
		break;
	default:
		break;
	}

	return (0);
}