bin/named/tkeyconf.c

	tkeyconf.c revision 15a44745412679c30a6d022733925af70a38b715
/*
 * Copyright (C) 1999, 2000  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.
 */

/* $Id: tkeyconf.c,v 1.12 2000/07/27 09:46:42 tale Exp $ */

#include <config.h>

#include <isc/buffer.h>
#include <isc/string.h>     /* Required for HP/UX (and others?) */
#include <isc/mem.h>

#include <dns/keyvalues.h>
#include <dns/name.h>
#include <dns/tkey.h>
#include <dns/tkeyconf.h>

#define RETERR(x) do { \
    result = (x); \
    if (result != ISC_R_SUCCESS) \
        goto failure; \
    } while (0)


isc_result_t
dns_tkeyctx_fromconfig(dns_c_ctx_t *cfg, isc_mem_t *mctx, isc_entropy_t *ectx,
               dns_tkeyctx_t **tctxp)
{
    isc_result_t result;
    dns_tkeyctx_t *tctx = NULL;
    char *s;
    isc_uint32_t n;
    isc_buffer_t b, namebuf;
    unsigned char data[1024];
    dns_name_t domain, keyname;

    result = dns_tkeyctx_create(mctx, ectx, &tctx);
    if (result != ISC_R_SUCCESS)
        return (result);

    s = NULL;
    result = dns_c_ctx_gettkeydhkey(cfg, &s, &n);
    if (result == ISC_R_NOTFOUND) {
        *tctxp = tctx;
        return (ISC_R_SUCCESS);
    }
    isc_buffer_init(&namebuf, data, sizeof(data));
    dns_name_init(&keyname, NULL);
    isc_buffer_init(&b, s, strlen(s));
    isc_buffer_add(&b, strlen(s));
    dns_name_fromtext(&keyname, &b, dns_rootname, ISC_FALSE, &namebuf);
    RETERR(dst_key_fromfile(&keyname, n, DNS_KEYALG_DH,
                DST_TYPE_PUBLIC|DST_TYPE_PRIVATE,
                NULL, mctx, &tctx->dhkey));
    s = NULL;
    RETERR(dns_c_ctx_gettkeydomain(cfg, &s));
    dns_name_init(&domain, NULL);
    tctx->domain = (dns_name_t *) isc_mem_get(mctx, sizeof(dns_name_t));
    if (tctx->domain == NULL) {
        result = ISC_R_NOMEMORY;
        goto failure;
    }
    dns_name_init(tctx->domain, NULL);
    isc_buffer_init(&b, s, strlen(s));
    isc_buffer_add(&b, strlen(s));
    RETERR(dns_name_fromtext(&domain, &b, dns_rootname, ISC_FALSE,
                 &namebuf));
    RETERR(dns_name_dup(&domain, mctx, tctx->domain));

    *tctxp = tctx;
    return (ISC_R_SUCCESS);

 failure:
    if (tctx->dhkey != NULL)
        dst_key_free(&tctx->dhkey);
    if (tctx->domain != NULL) {
        dns_name_free(tctx->domain, mctx);
        isc_mem_put(mctx, tctx->domain, sizeof(dns_name_t));
        tctx->domain = NULL;
    }
    dns_tkeyctx_destroy(&tctx);
    return (result);
}