bin/tests/adb_test.c

	adb_test.c revision efa4ebbff3c9f6f38ab8b55540fb696243c1172c
/*
 * Copyright (C) 1999  Internet Software Consortium.
 *
 * 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
 * CONSORTIUM 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 <config.h>

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

#include <isc/app.h>
#include <isc/assertions.h>
#include <isc/buffer.h>
#include <isc/error.h>
#include <isc/mem.h>
#include <isc/task.h>
#include <isc/thread.h>
#include <isc/timer.h>
#include <isc/result.h>
#include <isc/sockaddr.h>
#include <isc/socket.h>
#include <isc/net.h>

#include <dns/adb.h>
#include <dns/cache.h>
#include <dns/db.h>
#include <dns/master.h>
#include <dns/log.h>
#include <dns/name.h>
#include <dns/rootns.h>

typedef struct client client_t;
struct client {
    dns_name_t      name;
    ISC_LINK(client_t)  link;
    dns_adbfind_t          *find;
};

isc_mem_t *mctx;
isc_mempool_t *cmp;
isc_log_t *lctx;
isc_taskmgr_t *taskmgr;
isc_socketmgr_t *socketmgr;
isc_timermgr_t *timermgr;
isc_task_t *t1, *t2;
dns_view_t *view;
dns_db_t *rootdb;
ISC_LIST(client_t) clients;
isc_mutex_t client_lock;
isc_stdtime_t now;
dns_adb_t *adb;

static void check_result(isc_result_t, char *, ...);
isc_result_t ns_rootns_init(void);
void create_managers(void);
static void lookup_callback(isc_task_t *, isc_event_t *);
void create_view(void);
client_t *new_client(void);
void free_client(client_t **);
static inline void CLOCK(void);
static inline void CUNLOCK(void);
void lookup(char *);
void insert(char *, char *, dns_ttl_t, isc_stdtime_t);

static void
check_result(isc_result_t result, char *format, ...)
{
    va_list args;

    if (result == ISC_R_SUCCESS)
        return;

    va_start(args, format);
    vfprintf(stderr, format, args);
    va_end(args);
    fprintf(stderr, "\n");
    exit(1);
}

client_t *
new_client(void)
{
    client_t *client;

    client = isc_mempool_get(cmp);
    INSIST(client != NULL);
    dns_name_init(&client->name, NULL);
    ISC_LINK_INIT(client, link);
    client->find = NULL;

    return (client);
}

void
free_client(client_t **c)
{
    client_t *client;

    INSIST(c != NULL);
    client = *c;
    *c = NULL;
    INSIST(client != NULL);
    dns_name_free(&client->name, mctx);
    INSIST(!ISC_LINK_LINKED(client, link));
    INSIST(client->find == NULL);

    isc_mempool_put(cmp, client);
}

static inline void
CLOCK(void)
{
    RUNTIME_CHECK(isc_mutex_lock(&client_lock) == ISC_R_SUCCESS);
}

static inline void
CUNLOCK(void)
{
    RUNTIME_CHECK(isc_mutex_unlock(&client_lock) == ISC_R_SUCCESS);
}

static void
lookup_callback(isc_task_t *task, isc_event_t *ev)
{
    client_t *client;

    client = ev->arg;
    INSIST(client->find == ev->sender);

    printf("Task %p got event %p type %08x from %p, client %p\n",
           task, ev, ev->type, client->find, client);

    isc_event_free(&ev);

    CLOCK();

    dns_adb_dumpfind(client->find, stderr);
    dns_adb_destroyfind(&client->find);

    ISC_LIST_UNLINK(clients, client, link);
    free_client(&client);

    CUNLOCK();
}

void
create_managers(void)
{
    isc_result_t result;

    taskmgr = NULL;
    result = isc_taskmgr_create(mctx, 2, 0, &taskmgr);
    check_result(result, "isc_taskmgr_create");

    timermgr = NULL;
    result = isc_timermgr_create(mctx, &timermgr);
    check_result(result, "isc_timermgr_create");

    socketmgr = NULL;
    result = isc_socketmgr_create(mctx, &socketmgr);
    check_result(result, "isc_socketmgr_create");
}

void
create_view(void)
{
    dns_cache_t *cache;
    isc_result_t result;

    /*
     * View.
     */
    view = NULL;
    result = dns_view_create(mctx, dns_rdataclass_in, "_default", &view);
    check_result(result, "dns_view_create");

    /*
     * Cache.
     */
    cache = NULL;
    result = dns_cache_create(mctx, taskmgr, timermgr, dns_rdataclass_in,
                  "rbt", 0, NULL, &cache);
    check_result(result, "dns_cache_create");
    dns_view_setcache(view, cache);
    dns_cache_detach(&cache);

    /*
     * Resolver.
     *
     * XXXRTH hardwired number of tasks.  Also, we'll need to
     * see if we are dealing with a shared dispatcher in this view.
     */
    result = dns_view_createresolver(view, taskmgr, 16, socketmgr,
                     timermgr, NULL);
    check_result(result, "dns_view_createresolver()");

    rootdb = NULL;
    result = dns_rootns_create(mctx, &rootdb);
    check_result(result, "dns_rootns_create()");
    dns_view_sethints(view, rootdb);
    dns_db_detach(&rootdb);

    dns_view_freeze(view);
}


void
insert(char *target, char *addr, dns_ttl_t ttl, isc_stdtime_t now)
{
    isc_sockaddr_t sockaddr;
    struct in_addr ina;
    dns_name_t name;
    unsigned char namedata[256];
    isc_buffer_t t, namebuf;
    isc_result_t result;

    INSIST(target != NULL);

    isc_buffer_init(&t, target, strlen(target), ISC_BUFFERTYPE_TEXT);
    isc_buffer_add(&t, strlen(target));
    isc_buffer_init(&namebuf, namedata, sizeof namedata,
            ISC_BUFFERTYPE_BINARY);
    dns_name_init(&name, NULL);
    result = dns_name_fromtext(&name, &t, dns_rootname, ISC_FALSE,
                   &namebuf);
    check_result(result, "dns_name_fromtext %s", target);

    ina.s_addr = inet_addr(addr);
    isc_sockaddr_fromin(&sockaddr, &ina, 53);
    result = _dns_adb_insert(adb, &name, &sockaddr, ttl, now);
    check_result(result, "_dns_adb_insert %s -> %s", target, addr);
    printf("Added %s -> %s\n", target, addr);
}

void
lookup(char *target)
{
    dns_name_t name;
    unsigned char namedata[256];
    client_t *client;
    isc_buffer_t t, namebuf;
    isc_result_t result;
    unsigned int options;

    INSIST(target != NULL);

    client = new_client();
    isc_buffer_init(&t, target, strlen(target), ISC_BUFFERTYPE_TEXT);
    isc_buffer_add(&t, strlen(target));
    isc_buffer_init(&namebuf, namedata, sizeof namedata,
            ISC_BUFFERTYPE_BINARY);
    dns_name_init(&name, NULL);
    result = dns_name_fromtext(&name, &t, dns_rootname, ISC_FALSE,
                   &namebuf);
    check_result(result, "dns_name_fromtext %s", target);

    result = dns_name_dup(&name, mctx, &client->name);
    check_result(result, "dns_name_dup %s", target);

    options = 0;
    options |= DNS_ADBFIND_INET;
    options |= DNS_ADBFIND_INET6;
    options |= DNS_ADBFIND_WANTEVENT;
    result = dns_adb_createfind(adb, t2, lookup_callback, client,
                    &client->name, dns_rootname, options,
                    now, NULL, &client->find);
    check_result(result, "dns_adb_lookup()");
    dns_adb_dumpfind(client->find, stderr);

    if ((client->find->options & DNS_ADBFIND_WANTEVENT) != 0)
        ISC_LIST_APPEND(clients, client, link);
    else {
        dns_adb_destroyfind(&client->find);
        free_client(&client);
    }
}

int
main(int argc, char **argv)
{
    isc_result_t result;
    isc_logdestination_t destination;

    (void)argc;
    (void)argv;

    dns_result_register();
    result = isc_app_start();
    check_result(result, "isc_app_start()");

    isc_stdtime_get(&now);

    result = isc_mutex_init(&client_lock);
    check_result(result, "isc_mutex_init(&client_lock)");
    ISC_LIST_INIT(clients);

    /*
     * EVERYTHING needs a memory context.
     */
    mctx = NULL;
    RUNTIME_CHECK(isc_mem_create(0, 0, &mctx) == ISC_R_SUCCESS);

    cmp = NULL;
    RUNTIME_CHECK(isc_mempool_create(mctx, sizeof(client_t), &cmp)
              == ISC_R_SUCCESS);
    isc_mempool_setname(cmp, "adb test clients");

    result = isc_log_create(mctx, &lctx);
    check_result(result, "isc_log_create()");

    result = dns_log_init(lctx);
    check_result(result, "dns_log_init()");

    /*
     * Create and install the default channel.
     */
    destination.file.stream = stderr;
    destination.file.name = NULL;
    destination.file.versions = ISC_LOG_ROLLNEVER;
    destination.file.maximum_size = 0;
    result = isc_log_createchannel(lctx, "_default",
                       ISC_LOG_TOFILEDESC,
                       ISC_LOG_DYNAMIC,
                       &destination, ISC_LOG_PRINTTIME);
    check_result(result, "isc_log_createchannel()");
    result = isc_log_usechannel(lctx, "_default", NULL, NULL);
    check_result(result, "isc_log_usechannel()");

    /*
     * Set the initial debug level.
     */
    isc_log_setdebuglevel(lctx, 99);

    create_managers();

    t1 = NULL;
    result = isc_task_create(taskmgr, NULL, 0, &t1);
    check_result(result, "isc_task_create t1");
    t2 = NULL;
    result = isc_task_create(taskmgr, NULL, 0, &t2);
    check_result(result, "isc_task_create t2");

    printf("task 1 = %p\n", t1);
    printf("task 2 = %p\n", t2);

    create_view();

    adb = view->adb;

    /*
     * Lock the entire client list here.  This will cause all events
     * for found names to block as well.
     */
    CLOCK();
    lookup("f.root-servers.net.");      /* Should be in hints */
    lookup("www.iengines.com");     /* should fetch */
    lookup("www.isc.org");          /* should fetch */
    lookup("www.flame.org");        /* should fetch */
    lookup("kechara.flame.org.");       /* should fetch */
    lookup("moghedien.flame.org.");     /* should fetch */
    lookup("mailrelay.flame.org.");     /* should fetch */
    lookup("ipv4v6.flame.org.");        /* should fetch */
    lookup("nonexistant.flame.org.");   /* should fail to be found */
    lookup("foobar.badns.flame.org.");  /* should fail utterly (NS) */
    lookup("i.root-servers.net.");      /* Should be in hints */
    CUNLOCK();

    sleep(5);

    dns_adb_dump(adb, stderr);

    sleep (5);

    CLOCK();
    lookup("f.root-servers.net.");      /* Should be in hints */
    lookup("www.iengines.com");     /* should fetch */
    lookup("www.isc.org");          /* should fetch */
    lookup("www.flame.org");        /* should fetch */
    lookup("kechara.flame.org.");       /* should fetch */
    lookup("moghedien.flame.org.");     /* should fetch */
    lookup("mailrelay.flame.org.");     /* should fetch */
    lookup("ipv4v6.flame.org.");        /* should fetch */
    lookup("nonexistant.flame.org.");   /* should fail to be found */
    lookup("foobar.badns.flame.org.");  /* should fail utterly (NS) */
    lookup("i.root-servers.net.");      /* Should be in hints */
    CUNLOCK();

    dns_adb_dump(adb, stderr);

    isc_task_detach(&t1);
    isc_task_detach(&t2);

    isc_mem_stats(mctx, stdout);
    dns_adb_dump(adb, stderr);

    isc_app_run();

    dns_adb_dump(adb, stderr);

    dns_view_detach(&view);
    adb = NULL;

    isc_socketmgr_destroy(&socketmgr);
    isc_timermgr_destroy(&timermgr);

    fprintf(stderr, "Destroying task manager\n");
    isc_taskmgr_destroy(&taskmgr);

    isc_log_destroy(&lctx);

    isc_mempool_destroy(&cmp);
    isc_mem_stats(mctx, stdout);
    isc_mem_destroy(&mctx);

    isc_app_finish();

    return (0);
}