/*
 * Copyright (C) 2010-2023 Red Hat, Inc.  All rights reserved.
 *
 * Author: Fabio M. Di Nitto <fabbione@kronosnet.org>
 *
 * This software licensed under GPL-2.0+
 */

#include "config.h"

#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <stdint.h>
#include <limits.h>
#include <sys/socket.h>

#include "test-common.h"

char testipv4_1[IPBUFSIZE];
char testipv4_2[IPBUFSIZE];
char testipv6_1[IPBUFSIZE];
char testipv6_2[IPBUFSIZE];

static int test(void)
{
	char device_name[IFNAMSIZ];
	size_t size = IFNAMSIZ;
	char verifycmd[2048];
	int err = 0;
	nozzle_t nozzle;
	char *error_string = NULL;

	printf("Testing interface del ip\n");

	memset(device_name, 0, size);

	nozzle = nozzle_open(device_name, size, NULL);
	if (!nozzle) {
		printf("Unable to init %s\n", device_name);
		return -1;
	}

	printf("Testing error conditions\n");

	printf("Testing invalid nozzle handle\n");
	err = nozzle_del_ip(NULL, testipv4_1, "24");
	if ((!err) || (errno != EINVAL)) {
		printf("nozzle_del_ip accepted invalid nozzle handle\n");
		err = -1;
		goto out_clean;
	}

	printf("Testing empty ip address\n");
	err = nozzle_del_ip(nozzle, NULL, "24");
	if ((!err) || (errno != EINVAL)) {
		printf("nozzle_del_ip accepted invalid ip address\n");
		err = -1;
		goto out_clean;
	}


	printf("Testing empty netmask\n");
	err = nozzle_del_ip(nozzle, testipv4_1, NULL);
	if ((!err) || (errno != EINVAL)) {
		printf("nozzle_del_ip accepted invalid netmask\n");
		err = -1;
		goto out_clean;
	}

	printf("Adding ip: %s/24\n", testipv4_1);

	err = nozzle_add_ip(nozzle, testipv4_1, "24");
	if (err < 0) {
		printf("Unable to assign IP address\n");
		err = -1;
		goto out_clean;
	}

	printf("Checking ip: %s/24\n", testipv4_1);

	memset(verifycmd, 0, sizeof(verifycmd));
	snprintf(verifycmd, sizeof(verifycmd)-1,
#ifdef KNET_LINUX
		 "ip addr show dev %s | grep -q %s/24", nozzle->name, testipv4_1);
#endif
#ifdef KNET_BSD
		 "ifconfig %s | grep -q %s", nozzle->name, testipv4_1);
#endif
	err = execute_bin_sh_command(verifycmd, &error_string);
	if (error_string) {
		printf("Error string: %s\n", error_string);
		free(error_string);
		error_string = NULL;
	}
	if (err) {
		printf("Unable to verify IP address\n");
		err = -1;
		goto out_clean;
	}

	printf("Deleting ip: %s/24\n", testipv4_1);

	err = nozzle_del_ip(nozzle, testipv4_1, "24");
	if (err < 0) {
		printf("Unable to delete IP address\n");
		err = -1;
		goto out_clean;
	}

	printf("Checking ip: %s/24\n", testipv4_1);

	memset(verifycmd, 0, sizeof(verifycmd));
	snprintf(verifycmd, sizeof(verifycmd)-1,
#ifdef KNET_LINUX
		 "ip addr show dev %s | grep -q %s/24", nozzle->name, testipv4_1);
#endif
#ifdef KNET_BSD
		 "ifconfig %s | grep -q %s", nozzle->name, testipv4_1);
#endif
	err = execute_bin_sh_command(verifycmd, &error_string);
	if (error_string) {
		printf("Error string: %s\n", error_string);
		free(error_string);
		error_string = NULL;
	}
	if (!err) {
		printf("Unable to verify IP address\n");
		err = -1;
		goto out_clean;
	}

	printf("Deleting ip: %s/24 again\n", testipv4_1);

	err = nozzle_del_ip(nozzle, testipv4_1, "24");
	if (err < 0) {
		printf("Unable to delete IP address\n");
		err = -1;
		goto out_clean;
	}

	printf("Adding ip: %s/64\n", testipv6_1);

	err = nozzle_add_ip(nozzle, testipv6_1, "64");
	if (err < 0) {
		printf("Unable to assign IP address\n");
		err = -1;
		goto out_clean;
	}

	memset(verifycmd, 0, sizeof(verifycmd));
	snprintf(verifycmd, sizeof(verifycmd)-1,
#ifdef KNET_LINUX
		 "ip addr show dev %s | grep -q %s/64", nozzle->name, testipv6_1);
#endif
#ifdef KNET_BSD
		 "ifconfig %s | grep -q %s", nozzle->name, testipv6_1);
#endif
	err = execute_bin_sh_command(verifycmd, &error_string);
	if (error_string) {
		printf("Error string: %s\n", error_string);
		free(error_string);
		error_string = NULL;
	}
	if (err) {
		printf("Unable to verify IP address\n");
		err = -1;
		goto out_clean;
	}

	printf("Deleting ip: %s/64\n", testipv6_1);

	err = nozzle_del_ip(nozzle, testipv6_1, "64");
	if (err) {
		printf("Unable to delete IP address\n");
		err = -1;
		goto out_clean;
	}

	memset(verifycmd, 0, sizeof(verifycmd));
	snprintf(verifycmd, sizeof(verifycmd)-1,
#ifdef KNET_LINUX
		 "ip addr show dev %s | grep -q %s/64", nozzle->name, testipv6_1);
#endif
#ifdef KNET_BSD
		 "ifconfig %s | grep -q %s", nozzle->name, testipv6_1);
#endif
	err = execute_bin_sh_command(verifycmd, &error_string);
	if (error_string) {
		printf("Error string: %s\n", error_string);
		free(error_string);
		error_string = NULL;
	}
	if (!err) {
		printf("Unable to verify IP address\n");
		err = -1;
		goto out_clean;
	}

	printf("Testing deleting an IPv6 address with mtu < 1280 (in db, not on interface)\n");
	printf("Lowering interface MTU\n");

	err = nozzle_set_mtu(nozzle, 1200);
	if (err) {
		printf("Unable to set MTU to 1200\n");
		err = -1;
		goto out_clean;
	}

	printf("Adding ip: %s/64\n", testipv6_1);

	err = nozzle_add_ip(nozzle, testipv6_1, "64");
	if (err < 0) {
		printf("Unable to assign IP address\n");
		err = -1;
		goto out_clean;
	}

	memset(verifycmd, 0, sizeof(verifycmd));
	snprintf(verifycmd, sizeof(verifycmd)-1,
#ifdef KNET_LINUX
		 "ip addr show dev %s | grep -q %s/64", nozzle->name, testipv6_1);
#endif
#ifdef KNET_BSD
		 "ifconfig %s | grep -q %s", nozzle->name, testipv6_1);
#endif
	err = execute_bin_sh_command(verifycmd, &error_string);
	if (error_string) {
		printf("Error string: %s\n", error_string);
		free(error_string);
		error_string = NULL;
	}
	if (!err) {
		printf("Unable to verify IP address\n");
		err = -1;
		goto out_clean;
	}

	printf("Deleting ip: %s/64 with low mtu\n", testipv6_1);

	err = nozzle_del_ip(nozzle, testipv6_1, "64");
	if (err) {
		printf("Unable to delete IP address\n");
		err = -1;
		goto out_clean;
	}

out_clean:
	nozzle_close(nozzle);

	return err;
}

int main(void)
{
	need_root();
	need_tun();

	make_local_ips(testipv4_1, testipv4_2, testipv6_1, testipv6_2);

	if (test() < 0)
		return FAIL;

	return PASS;
}
