/*-
 * Copyright (c) 2014 EMC / Isilon Storage Division
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <atf-c.h>

#include <assert.h>
#include <dirent.h>
#include <err.h>
#include <fcntl.h>
#include <malloc_np.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

ATF_TC(cgetstr_leak);
ATF_TC_HEAD(cgetstr_leak, tc)
{

	atf_tc_set_md_var(tc, "descr",
	    "Check cgetstr(3) for memory leakage (Bug 195128)");
}

void
malgetuint64(char *name, uint64_t *val)
{
	size_t len;

	len = sizeof(*val);
        if (mallctl(name, val, &len, NULL, 0) == -1)
                err(2, "mallctl failed");
	if (len != sizeof(*val))
		err(2, "bad size from mallctl");
}

int64_t
malallocated(void)
{
	uint64_t allocated, deallocated;

	malgetuint64("thread.allocated", &allocated);
	malgetuint64("thread.deallocated", &deallocated);
	printf("alloc: %jd dealloc: %jd delta: %jd\n", (uintmax_t)allocated, (uintmax_t)deallocated, (uintmax_t)(allocated - deallocated));
	return ((int64_t)(allocated - deallocated));
}

ATF_TC_BODY(cgetstr_leak, tc)
{
	char *buf, *str, *dbarray[] = { "/etc/login.conf" };
	int errcode, i;
	int64_t allocated, start;

	start = malallocated();
	printf("Start %jd\n", (intmax_t)start);

	i = cgetent(&buf, dbarray, "default");
	if (i == -1)
		atf_tc_skip("Unable to find default class in login.conf");
	if (i == -2)
		atf_tc_skip("Error reading login.conf");

	allocated = malallocated();
	printf("cgetent %jd\n", (intmax_t)allocated);
	for (i = 0; i < 1000; i++) {
		if ((errcode = cgetstr(buf, "path", &str)) < 0)
			atf_tc_skip("cgetstr failed with %d", errcode);
	}
	allocated = malallocated();
	printf("cgetstr %jd\n", (intmax_t)allocated);
	free(buf);
	printf("free %jd\n", (intmax_t)allocated);
	cgetclose();

	allocated = malallocated();
	printf("cgetclose %jd\n", (intmax_t)allocated);
	if (allocated - start > 4096)
		atf_tc_fail("Failure: leaked %jd bytes", allocated - start);
	else
		(void)printf("OK: used %jd bytes\n", allocated - start);
}

ATF_TP_ADD_TCS(tp)
{

	ATF_TP_ADD_TC(tp, cgetstr_leak);

	return atf_no_error();
}