bin/tests/lwres_test.c

	lwres_test.c revision 70e5a7403f0e0a3bd292b8287c5fed5772c15270
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews/*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Copyright (C) 2000, 2001  Internet Software Consortium.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt *
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Permission to use, copy, modify, and/or distribute this software for any
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * purpose with or without fee is hereby granted, provided that the above
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * copyright notice and this permission notice appear in all copies.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt *
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * PERFORMANCE OF THIS SOFTWARE.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt/* $Id: lwres_test.c,v 1.31 2007/06/19 23:46:59 tbox Exp $ */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <config.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <assert.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <stdlib.h>
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#include <string.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <isc/mem.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <isc/netaddr.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <isc/util.h>
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt#include <lwres/lwres.h>
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt#define USE_ISC_MEM
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntstatic inline void
ef421f66f47224a42073deaf087378c5d0c9952eEvan HuntCHECK(int val, const char *msg) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    if (val != 0) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        fprintf(stderr, "%s returned %d\n", msg, val);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        exit(1);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntstatic void
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunthexdump(const char *msg, void *base, size_t len) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    unsigned char *p;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    unsigned int cnt;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    p = base;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    cnt = 0;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    printf("*** %s (%lu bytes @ %p)\n", msg, (unsigned long)len, base);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    while (cnt < len) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        if (cnt % 16 == 0)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt            printf("%p: ", p);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        else if (cnt % 8 == 0)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt            printf(" |");
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        printf(" %02x", *p++);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        cnt++;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        if (cnt % 16 == 0)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt            printf("\n");
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    if (cnt % 16 != 0)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        printf("\n");
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntstatic const char *TESTSTRING = "This is a test.  This is only a test.  !!!";
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntstatic lwres_context_t *ctx;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntstatic void
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunttest_noop(void) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    int ret;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    lwres_lwpacket_t pkt, pkt2;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    lwres_nooprequest_t nooprequest, *nooprequest2;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    lwres_noopresponse_t noopresponse, *noopresponse2;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    lwres_buffer_t b;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt    pkt.pktflags = 0;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    pkt.serial = 0x11223344;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    pkt.recvlength = 0x55667788;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    pkt.result = 0;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    nooprequest.datalength = strlen(TESTSTRING);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    /* XXXDCL maybe "nooprequest.data" should be const. */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    DE_CONST(TESTSTRING, nooprequest.data);
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt    ret = lwres_nooprequest_render(ctx, &nooprequest, &pkt, &b);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    CHECK(ret, "lwres_nooprequest_render");
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    hexdump("rendered noop request", b.base, b.used);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt     * Now, parse it into a new structure.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt     */
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt    lwres_buffer_first(&b);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ret = lwres_lwpacket_parseheader(&b, &pkt2);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    CHECK(ret, "lwres_lwpacket_parseheader");
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    hexdump("parsed pkt2", &pkt2, sizeof(pkt2));
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    nooprequest2 = NULL;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ret = lwres_nooprequest_parse(ctx, &b, &pkt2, &nooprequest2);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    CHECK(ret, "lwres_nooprequest_parse");
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    assert(nooprequest.datalength == nooprequest2->datalength);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    assert(memcmp(nooprequest.data, nooprequest2->data,
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt               nooprequest.datalength) == 0);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    lwres_nooprequest_free(ctx, &nooprequest2);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    lwres_context_freemem(ctx, b.base, b.length);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    b.base = NULL;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    b.length = 0;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    pkt.pktflags = 0;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    pkt.serial = 0x11223344;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    pkt.recvlength = 0x55667788;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    pkt.result = 0xdeadbeef;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    noopresponse.datalength = strlen(TESTSTRING);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    /* XXXDCL maybe "noopresponse.data" should be const. */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    DE_CONST(TESTSTRING, noopresponse.data);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ret = lwres_noopresponse_render(ctx, &noopresponse, &pkt, &b);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    CHECK(ret, "lwres_noopresponse_render");
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    hexdump("rendered noop response", b.base, b.used);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    /*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt     * Now, parse it into a new structure.
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews     */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    lwres_buffer_first(&b);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews    ret = lwres_lwpacket_parseheader(&b, &pkt2);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    CHECK(ret, "lwres_lwpacket_parseheader");
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    hexdump("parsed pkt2", &pkt2, sizeof(pkt2));
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    noopresponse2 = NULL;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews    ret = lwres_noopresponse_parse(ctx, &b, &pkt2, &noopresponse2);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    CHECK(ret, "lwres_noopresponse_parse");
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    assert(noopresponse.datalength == noopresponse2->datalength);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews    assert(memcmp(noopresponse.data, noopresponse2->data,
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt               noopresponse.datalength) == 0);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews    lwres_noopresponse_free(ctx, &noopresponse2);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    lwres_context_freemem(ctx, b.base, b.length);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    b.base = NULL;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews    b.length = 0;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewsstatic void
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrewstest_gabn(const char *target) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    lwres_gabnresponse_t *res;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    lwres_addr_t *addr;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews    int ret;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews    unsigned int i;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    char outbuf[64];
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews    res = NULL;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ret = lwres_getaddrsbyname(ctx, target,
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews                   LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6,
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews                   &res);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews    printf("gabn %s ret == %d\n", target, ret);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    if (ret != 0) {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews        printf("FAILURE!\n");
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews        if (res != NULL)
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews            lwres_gabnresponse_free(ctx, &res);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        return;
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews    }
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews    printf("Returned real name: (%u, %s)\n",
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt           res->realnamelen, res->realname);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews    printf("%u aliases:\n", res->naliases);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews    for (i = 0; i < res->naliases; i++)
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews        printf("\t(%u, %s)\n", res->aliaslen[i], res->aliases[i]);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    printf("%u addresses:\n", res->naddrs);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews    addr = LWRES_LIST_HEAD(res->addrs);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews    for (i = 0; i < res->naddrs; i++) {
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews        INSIST(addr != NULL);
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        if (addr->family == LWRES_ADDRTYPE_V4)
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews            (void)inet_ntop(AF_INET, addr->address,
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews                    outbuf, sizeof(outbuf));
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews        else
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews            (void)inet_ntop(AF_INET6, addr->address,
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt                    outbuf, sizeof(outbuf));
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt        printf("\tAddr len %u family %08x %s\n",
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt               addr->length, addr->family, outbuf);
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt        addr = LWRES_LIST_NEXT(addr, link);
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt    }
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt    lwres_gabnresponse_free(ctx, &res);
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt}
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Huntstatic void
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunttest_gnba(const char *target, lwres_uint32_t af) {
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt    lwres_gnbaresponse_t *res;
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt    int ret;
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt    unsigned int i;
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt    unsigned char addrbuf[16];
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt    unsigned int len;
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt    if (af == LWRES_ADDRTYPE_V4) {
a747113422afaa29ce72d2c5ba7f0b7ea9ec2054Evan Hunt        len = 4;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        ret = inet_pton(AF_INET, target, addrbuf);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        assert(ret == 1);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    } else {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        len = 16;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        ret = inet_pton(AF_INET6, target, addrbuf);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        assert(ret == 1);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    }

    res = NULL;
    ret = lwres_getnamebyaddr(ctx, af, len, addrbuf, &res);
    printf("gnba %s ret == %d\n", target, ret);
    assert(ret == 0);
    assert(res != NULL);

    printf("Returned real name: (%u, %s)\n",
           res->realnamelen, res->realname);
    printf("%u aliases:\n", res->naliases);
    for (i = 0; i < res->naliases; i++)
        printf("\t(%u, %s)\n", res->aliaslen[i], res->aliases[i]);

    lwres_gnbaresponse_free(ctx, &res);
}

#ifdef USE_ISC_MEM
/*
 * Wrappers around our memory management stuff, for the lwres functions.
 */
static void *
mem_alloc(void *arg, size_t size) {
    return (isc_mem_get(arg, size));
}

static void
mem_free(void *arg, void *mem, size_t size) {
    isc_mem_put(arg, mem, size);
}
#endif

int
main(int argc, char *argv[]) {
    int ret;
#ifdef USE_ISC_MEM
    isc_mem_t *mem;
    isc_result_t result;
#endif

    (void)argc;
    (void)argv;

#ifdef USE_ISC_MEM
    mem = NULL;
    result = isc_mem_create(0, 0, &mem);
    INSIST(result == ISC_R_SUCCESS);
#endif

    ctx = NULL;
#ifdef USE_ISC_MEM
    ret = lwres_context_create(&ctx, mem, mem_alloc, mem_free, 0);
#else
    ret = lwres_context_create(&ctx, NULL, NULL, NULL, 0);
#endif

    CHECK(ret, "lwres_context_create");

    ret = lwres_conf_parse(ctx, "/etc/resolv.conf");
    CHECK(ret, "lwres_conf_parse");

    lwres_conf_print(ctx, stdout);

    test_noop();

    /*
     * The following comments about tests all assume your search path is
     *  nominum.com isc.org flame.org
     * and ndots is the default of 1.
     */
    test_gabn("alias-05.test"); /* exact, then search. */
    test_gabn("f.root-servers.net.");
    test_gabn("poofball.flame.org.");
    test_gabn("foo.ip6.int.");
    test_gabn("notthereatall.flame.org");  /* exact, then search (!found)*/
    test_gabn("shell"); /* search (found in nominum.com), then exact */
    test_gabn("kechara"); /* search (found in flame.org), then exact */
    test_gabn("lkasdjlaksjdlkasjdlkasjdlkasjd"); /* search, exact(!found)*/

    test_gnba("198.133.199.1", LWRES_ADDRTYPE_V4);
    test_gnba("204.152.184.79", LWRES_ADDRTYPE_V4);
    test_gnba("3ffe:8050:201:1860:42::1", LWRES_ADDRTYPE_V6);

    lwres_conf_clear(ctx);
    lwres_context_destroy(&ctx);

#ifdef USE_ISC_MEM
    isc_mem_stats(mem, stdout);
    isc_mem_destroy(&mem);
#endif

    return (0);
}