system/tkey/keycreate.c

	keycreate.c revision d58e33bfabfee19a035031dac633d36659738d56
/*
 * Copyright (C) 2004, 2005, 2007, 2009, 2011, 2012, 2014  Internet Systems Consortium, Inc. ("ISC")
 * Copyright (C) 2001  Internet Software Consortium.
 *
 * Permission to use, copy, modify, and/or 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 ISC DISCLAIMS ALL WARRANTIES WITH
 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS.  IN NO EVENT SHALL ISC 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.
 */

/* $Id: keycreate.c,v 1.20 2011/01/11 23:47:13 tbox Exp $ */

#include <config.h>

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

#include <isc/app.h>
#include <isc/base64.h>
#include <isc/entropy.h>
#include <isc/hash.h>
#include <isc/log.h>
#include <isc/mem.h>
#include <isc/sockaddr.h>
#include <isc/socket.h>
#include <isc/task.h>
#include <isc/timer.h>
#include <isc/util.h>

#include <dns/dispatch.h>
#include <dns/fixedname.h>
#include <dns/keyvalues.h>
#include <dns/message.h>
#include <dns/name.h>
#include <dns/request.h>
#include <dns/result.h>
#include <dns/tkey.h>
#include <dns/tsig.h>
#include <dns/view.h>

#include <dst/result.h>

#define CHECK(str, x) { \
    if ((x) != ISC_R_SUCCESS) { \
        fprintf(stderr, "I:%s: %s\n", (str), isc_result_totext(x)); \
        exit(-1); \
    } \
}

#define RUNCHECK(x) RUNTIME_CHECK((x) == ISC_R_SUCCESS)

#define PORT 5300
#define TIMEOUT 30

static dst_key_t *ourkey;
static isc_mem_t *mctx;
static dns_tsigkey_t *tsigkey, *initialkey;
static dns_tsig_keyring_t *ring;
static unsigned char noncedata[16];
static isc_buffer_t nonce;
static dns_requestmgr_t *requestmgr;
static const char *ownername_str = ".";

static void
recvquery(isc_task_t *task, isc_event_t *event) {
    dns_requestevent_t *reqev = (dns_requestevent_t *)event;
    isc_result_t result;
    dns_message_t *query, *response;
    char keyname[256];
    isc_buffer_t keynamebuf;
    int type;

    UNUSED(task);

    REQUIRE(reqev != NULL);

    if (reqev->result != ISC_R_SUCCESS) {
        fprintf(stderr, "I:request event result: %s\n",
            isc_result_totext(reqev->result));
        exit(-1);
    }

    query = reqev->ev_arg;

    response = NULL;
    result = dns_message_create(mctx, DNS_MESSAGE_INTENTPARSE, &response);
    CHECK("dns_message_create", result);

    result = dns_request_getresponse(reqev->request, response,
                     DNS_MESSAGEPARSE_PRESERVEORDER);
    CHECK("dns_request_getresponse", result);

    if (response->rcode != dns_rcode_noerror) {
        result = ISC_RESULTCLASS_DNSRCODE + response->rcode;
        fprintf(stderr, "I:response rcode: %s\n",
            isc_result_totext(result));
            exit(-1);
    }

    result = dns_tkey_processdhresponse(query, response, ourkey, &nonce,
                        &tsigkey, ring);
    CHECK("dns_tkey_processdhresponse", result);

    /*
     * Yes, this is a hack.
     */
    isc_buffer_init(&keynamebuf, keyname, sizeof(keyname));
    result = dst_key_buildfilename(tsigkey->key, 0, "", &keynamebuf);
    CHECK("dst_key_buildfilename", result);
    printf("%.*s\n", (int)isc_buffer_usedlength(&keynamebuf),
           (char *)isc_buffer_base(&keynamebuf));
    type = DST_TYPE_PRIVATE | DST_TYPE_PUBLIC | DST_TYPE_KEY;
    result = dst_key_tofile(tsigkey->key, type, "");
    CHECK("dst_key_tofile", result);

    dns_message_destroy(&query);
    dns_message_destroy(&response);
    dns_request_destroy(&reqev->request);
    isc_event_free(&event);
    isc_app_shutdown();
    return;
}

static void
sendquery(isc_task_t *task, isc_event_t *event) {
    struct in_addr inaddr;
    isc_sockaddr_t address;
    isc_region_t r;
    isc_result_t result;
    dns_fixedname_t keyname;
    dns_fixedname_t ownername;
    isc_buffer_t namestr, keybuf;
    unsigned char keydata[9];
    dns_message_t *query;
    dns_request_t *request;
    static char keystr[] = "0123456789ab";

    isc_event_free(&event);

    result = ISC_R_FAILURE;
    if (inet_pton(AF_INET, "10.53.0.1", &inaddr) != 1)
        CHECK("inet_pton", result);
    isc_sockaddr_fromin(&address, &inaddr, PORT);

    dns_fixedname_init(&keyname);
    isc_buffer_constinit(&namestr, "tkeytest.", 9);
    isc_buffer_add(&namestr, 9);
    result = dns_name_fromtext(dns_fixedname_name(&keyname), &namestr,
                   NULL, 0, NULL);
    CHECK("dns_name_fromtext", result);

    dns_fixedname_init(&ownername);
    isc_buffer_constinit(&namestr, ownername_str, strlen(ownername_str));
    isc_buffer_add(&namestr, strlen(ownername_str));
    result = dns_name_fromtext(dns_fixedname_name(&ownername), &namestr,
                   NULL, 0, NULL);
    CHECK("dns_name_fromtext", result);

    isc_buffer_init(&keybuf, keydata, 9);
    result = isc_base64_decodestring(keystr, &keybuf);
    CHECK("isc_base64_decodestring", result);

    isc_buffer_usedregion(&keybuf, &r);

    initialkey = NULL;
    result = dns_tsigkey_create(dns_fixedname_name(&keyname),
                    DNS_TSIG_HMACMD5_NAME,
                    isc_buffer_base(&keybuf),
                    isc_buffer_usedlength(&keybuf),
                    ISC_FALSE, NULL, 0, 0, mctx, ring,
                    &initialkey);
    CHECK("dns_tsigkey_create", result);

    query = NULL;
    result = dns_message_create(mctx, DNS_MESSAGE_INTENTRENDER, &query);
    CHECK("dns_message_create", result);

    result = dns_tkey_builddhquery(query, ourkey,
                       dns_fixedname_name(&ownername),
                       DNS_TSIG_HMACMD5_NAME, &nonce, 3600);
    CHECK("dns_tkey_builddhquery", result);

    request = NULL;
    result = dns_request_create(requestmgr, query, &address,
                    0, initialkey, TIMEOUT, task,
                    recvquery, query, &request);
    CHECK("dns_request_create", result);
}

int
main(int argc, char *argv[]) {
    char *ourkeyname;
    isc_taskmgr_t *taskmgr;
    isc_timermgr_t *timermgr;
    isc_socketmgr_t *socketmgr;
    isc_socket_t *sock;
    unsigned int attrs, attrmask;
    isc_sockaddr_t bind_any;
    dns_dispatchmgr_t *dispatchmgr;
    dns_dispatch_t *dispatchv4;
    dns_view_t *view;
    isc_entropy_t *ectx;
    dns_tkeyctx_t *tctx;
    isc_log_t *log;
    isc_logconfig_t *logconfig;
    isc_task_t *task;
    isc_result_t result;
    int type;

    RUNCHECK(isc_app_start());

    if (argc < 2) {
        fprintf(stderr, "I:no DH key provided\n");
        exit(-1);
    }
    ourkeyname = argv[1];

    if (argc >= 3)
        ownername_str = argv[2];

    dns_result_register();

    mctx = NULL;
    isc_mem_debugging = ISC_MEM_DEBUGRECORD;
    RUNCHECK(isc_mem_create(0, 0, &mctx));

    ectx = NULL;
    RUNCHECK(isc_entropy_create(mctx, &ectx));
    RUNCHECK(isc_entropy_createfilesource(ectx, "../random.data"));
    RUNCHECK(isc_hash_create(mctx, ectx, DNS_NAME_MAXWIRE));

    log = NULL;
    logconfig = NULL;
    RUNCHECK(isc_log_create(mctx, &log, &logconfig));

    RUNCHECK(dst_lib_init(mctx, ectx, ISC_ENTROPY_GOODONLY));

    taskmgr = NULL;
    RUNCHECK(isc_taskmgr_create(mctx, 1, 0, &taskmgr));
    task = NULL;
    RUNCHECK(isc_task_create(taskmgr, 0, &task));
    timermgr = NULL;
    RUNCHECK(isc_timermgr_create(mctx, &timermgr));
    socketmgr = NULL;
    RUNCHECK(isc_socketmgr_create(mctx, &socketmgr));
    dispatchmgr = NULL;
    RUNCHECK(dns_dispatchmgr_create(mctx, NULL, &dispatchmgr));
    isc_sockaddr_any(&bind_any);
    attrs = DNS_DISPATCHATTR_UDP |
        DNS_DISPATCHATTR_MAKEQUERY |
        DNS_DISPATCHATTR_IPV4;
    attrmask = DNS_DISPATCHATTR_UDP |
           DNS_DISPATCHATTR_TCP |
           DNS_DISPATCHATTR_IPV4 |
           DNS_DISPATCHATTR_IPV6;
    dispatchv4 = NULL;
    RUNCHECK(dns_dispatch_getudp(dispatchmgr, socketmgr, taskmgr,
                      &bind_any, 4096, 4, 2, 3, 5,
                      attrs, attrmask, &dispatchv4));
    requestmgr = NULL;
    RUNCHECK(dns_requestmgr_create(mctx, timermgr, socketmgr, taskmgr,
                        dispatchmgr, dispatchv4, NULL,
                        &requestmgr));

    ring = NULL;
    RUNCHECK(dns_tsigkeyring_create(mctx, &ring));
    tctx = NULL;
    RUNCHECK(dns_tkeyctx_create(mctx, ectx, &tctx));

    view = NULL;
    RUNCHECK(dns_view_create(mctx, 0, "_test", &view));
    dns_view_setkeyring(view, ring);
    dns_tsigkeyring_detach(&ring);

    sock = NULL;
    RUNCHECK(isc_socket_create(socketmgr, PF_INET, isc_sockettype_udp,
                   &sock));

    RUNCHECK(isc_app_onrun(mctx, task, sendquery, NULL));

    ourkey = NULL;
    type = DST_TYPE_PUBLIC | DST_TYPE_PRIVATE | DST_TYPE_KEY;
    result = dst_key_fromnamedfile(ourkeyname, NULL, type, mctx, &ourkey);
    CHECK("dst_key_fromnamedfile", result);

    isc_buffer_init(&nonce, noncedata, sizeof(noncedata));
    result = isc_entropy_getdata(ectx, noncedata, sizeof(noncedata),
                     NULL, ISC_ENTROPY_BLOCKING);
    CHECK("isc_entropy_getdata", result);
    isc_buffer_add(&nonce, sizeof(noncedata));

    (void)isc_app_run();

    dns_requestmgr_shutdown(requestmgr);
    dns_requestmgr_detach(&requestmgr);
    dns_dispatch_detach(&dispatchv4);
    dns_dispatchmgr_destroy(&dispatchmgr);
    isc_task_shutdown(task);
    isc_task_detach(&task);
    isc_taskmgr_destroy(&taskmgr);
    isc_socket_detach(&sock);
    isc_socketmgr_destroy(&socketmgr);
    isc_timermgr_destroy(&timermgr);

    dst_key_free(&ourkey);
    dns_tsigkey_detach(&initialkey);
    dns_tsigkey_detach(&tsigkey);

    dns_tkeyctx_destroy(&tctx);

    dns_view_detach(&view);

    isc_log_destroy(&log);

    dst_lib_destroy();
    isc_hash_destroy();
    isc_entropy_detach(&ectx);

    isc_mem_destroy(&mctx);

    isc_app_finish();

    return (0);
}