bin/tests/lwres_test.c

/*
 * Copyright (C) 2000, 2001, 2004, 2005, 2007, 2015, 2016  Internet Systems Consortium, Inc. ("ISC")
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

/* $Id: lwres_test.c,v 1.31 2007/06/19 23:46:59 tbox Exp $ */

#include <config.h>

#include <assert.h>
#include <stdlib.h>
#include <string.h>

#include <isc/mem.h>
#include <isc/netaddr.h>
#include <isc/print.h>
#include <isc/util.h>

#include <lwres/lwres.h>

#define USE_ISC_MEM

static inline void
CHECK(int val, const char *msg) {
    if (val != 0) {
        fprintf(stderr, "%s returned %d\n", msg, val);
        exit(1);
    }
}

static void
hexdump(const char *msg, void *base, size_t len) {
    unsigned char *p;
    unsigned int cnt;

    p = base;
    cnt = 0;

    printf("*** %s (%lu bytes @ %p)\n", msg, (unsigned long)len, base);

    while (cnt < len) {
        if (cnt % 16 == 0)
            printf("%p: ", p);
        else if (cnt % 8 == 0)
            printf(" |");
        printf(" %02x", *p++);
        cnt++;

        if (cnt % 16 == 0)
            printf("\n");
    }

    if (cnt % 16 != 0)
        printf("\n");
}

static const char *TESTSTRING = "This is a test.  This is only a test.  !!!";
static lwres_context_t *ctx;

static void
test_noop(void) {
    int ret;
    lwres_lwpacket_t pkt, pkt2;
    lwres_nooprequest_t nooprequest, *nooprequest2;
    lwres_noopresponse_t noopresponse, *noopresponse2;
    lwres_buffer_t b;

    pkt.pktflags = 0;
    pkt.serial = 0x11223344;
    pkt.recvlength = 0x55667788;
    pkt.result = 0;

    nooprequest.datalength = strlen(TESTSTRING);
    /* XXXDCL maybe "nooprequest.data" should be const. */
    DE_CONST(TESTSTRING, nooprequest.data);
    ret = lwres_nooprequest_render(ctx, &nooprequest, &pkt, &b);
    CHECK(ret, "lwres_nooprequest_render");

    hexdump("rendered noop request", b.base, b.used);

    /*
     * Now, parse it into a new structure.
     */
    lwres_buffer_first(&b);
    ret = lwres_lwpacket_parseheader(&b, &pkt2);
    CHECK(ret, "lwres_lwpacket_parseheader");

    hexdump("parsed pkt2", &pkt2, sizeof(pkt2));

    nooprequest2 = NULL;
    ret = lwres_nooprequest_parse(ctx, &b, &pkt2, &nooprequest2);
    CHECK(ret, "lwres_nooprequest_parse");

    assert(nooprequest.datalength == nooprequest2->datalength);
    assert(memcmp(nooprequest.data, nooprequest2->data,
               nooprequest.datalength) == 0);

    lwres_nooprequest_free(ctx, &nooprequest2);

    lwres_context_freemem(ctx, b.base, b.length);
    b.base = NULL;
    b.length = 0;

    pkt.pktflags = 0;
    pkt.serial = 0x11223344;
    pkt.recvlength = 0x55667788;
    pkt.result = 0xdeadbeef;

    noopresponse.datalength = strlen(TESTSTRING);
    /* XXXDCL maybe "noopresponse.data" should be const. */
    DE_CONST(TESTSTRING, noopresponse.data);
    ret = lwres_noopresponse_render(ctx, &noopresponse, &pkt, &b);
    CHECK(ret, "lwres_noopresponse_render");

    hexdump("rendered noop response", b.base, b.used);

    /*
     * Now, parse it into a new structure.
     */
    lwres_buffer_first(&b);
    ret = lwres_lwpacket_parseheader(&b, &pkt2);
    CHECK(ret, "lwres_lwpacket_parseheader");

    hexdump("parsed pkt2", &pkt2, sizeof(pkt2));

    noopresponse2 = NULL;
    ret = lwres_noopresponse_parse(ctx, &b, &pkt2, &noopresponse2);
    CHECK(ret, "lwres_noopresponse_parse");

    assert(noopresponse.datalength == noopresponse2->datalength);
    assert(memcmp(noopresponse.data, noopresponse2->data,
               noopresponse.datalength) == 0);

    lwres_noopresponse_free(ctx, &noopresponse2);

    lwres_context_freemem(ctx, b.base, b.length);
    b.base = NULL;
    b.length = 0;
}

static void
test_gabn(const char *target) {
    lwres_gabnresponse_t *res;
    lwres_addr_t *addr;
    int ret;
    unsigned int i;
    char outbuf[64];

    res = NULL;
    ret = lwres_getaddrsbyname(ctx, target,
                   LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6,
                   &res);
    printf("gabn %s ret == %d\n", target, ret);
    if (ret != 0) {
        printf("FAILURE!\n");
        if (res != NULL)
            lwres_gabnresponse_free(ctx, &res);
        return;
    }

    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]);
    printf("%u addresses:\n", res->naddrs);
    addr = LWRES_LIST_HEAD(res->addrs);
    for (i = 0; i < res->naddrs; i++) {
        INSIST(addr != NULL);

        if (addr->family == LWRES_ADDRTYPE_V4)
            (void)inet_ntop(AF_INET, addr->address,
                    outbuf, sizeof(outbuf));
        else
            (void)inet_ntop(AF_INET6, addr->address,
                    outbuf, sizeof(outbuf));
        printf("\tAddr len %u family %08x %s\n",
               addr->length, addr->family, outbuf);
        addr = LWRES_LIST_NEXT(addr, link);
    }

    lwres_gabnresponse_free(ctx, &res);
}

static void
test_gnba(const char *target, lwres_uint32_t af) {
    lwres_gnbaresponse_t *res;
    int ret;
    unsigned int i;
    unsigned char addrbuf[16];
    unsigned int len;

    if (af == LWRES_ADDRTYPE_V4) {
        len = 4;
        ret = inet_pton(AF_INET, target, addrbuf);
        assert(ret == 1);
    } else {
        len = 16;
        ret = inet_pton(AF_INET6, target, addrbuf);
        assert(ret == 1);
    }

    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);
}