tkeyconf.c

Go to the documentation of this file.

/*
 * Copyright (C) 2004-2007, 2009, 2010, 2012, 2014  Internet Systems Consortium, Inc. ("ISC")
 * Copyright (C) 1999-2001  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: tkeyconf.c,v 1.33 2010/12/20 23:47:20 tbox Exp $ */

/*! \file */

#include <config.h>

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

#include <isccfg/cfg.h>

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

#include <dst/gssapi.h>

#include <named/tkeyconf.h>

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

#include<named/log.h>
#define LOG(msg) \
        isc_log_write(ns_g_lctx, \
        NS_LOGCATEGORY_GENERAL, \
        NS_LOGMODULE_SERVER, \
        ISC_LOG_ERROR, \
        "%s", msg)

isc_result_t
ns_tkeyctx_fromconfig(const cfg_obj_t *options, isc_mem_t *mctx,
                      isc_entropy_t *ectx, dns_tkeyctx_t **tctxp)
{
        isc_result_t result;
        dns_tkeyctx_t *tctx = NULL;
        const char *s;
        isc_uint32_t n;
        dns_fixedname_t fname;
        dns_name_t *name;
        isc_buffer_t b;
        const cfg_obj_t *obj;
        int type;

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

        obj = NULL;
        result = cfg_map_get(options, "tkey-dhkey", &obj);
        if (result == ISC_R_SUCCESS) {
                s = cfg_obj_asstring(cfg_tuple_get(obj, "name"));
                n = cfg_obj_asuint32(cfg_tuple_get(obj, "keyid"));
                isc_buffer_constinit(&b, s, strlen(s));
                isc_buffer_add(&b, strlen(s));
                dns_fixedname_init(&fname);
                name = dns_fixedname_name(&fname);
                RETERR(dns_name_fromtext(name, &b, dns_rootname, 0, NULL));
                type = DST_TYPE_PUBLIC|DST_TYPE_PRIVATE|DST_TYPE_KEY;
                RETERR(dst_key_fromfile(name, (dns_keytag_t) n, DNS_KEYALG_DH,
                                        type, NULL, mctx, &tctx->dhkey));
        }

        obj = NULL;
        result = cfg_map_get(options, "tkey-domain", &obj);
        if (result == ISC_R_SUCCESS) {
                s = cfg_obj_asstring(obj);
                isc_buffer_constinit(&b, s, strlen(s));
                isc_buffer_add(&b, strlen(s));
                dns_fixedname_init(&fname);
                name = dns_fixedname_name(&fname);
                RETERR(dns_name_fromtext(name, &b, dns_rootname, 0, NULL));
                tctx->domain = isc_mem_get(mctx, sizeof(dns_name_t));
                if (tctx->domain == NULL) {
                        result = ISC_R_NOMEMORY;
                        goto failure;
                }
                dns_name_init(tctx->domain, NULL);
                RETERR(dns_name_dup(name, mctx, tctx->domain));
        }

        obj = NULL;
        result = cfg_map_get(options, "tkey-gssapi-credential", &obj);
        if (result == ISC_R_SUCCESS) {
                s = cfg_obj_asstring(obj);

                isc_buffer_constinit(&b, s, strlen(s));
                isc_buffer_add(&b, strlen(s));
                dns_fixedname_init(&fname);
                name = dns_fixedname_name(&fname);
                RETERR(dns_name_fromtext(name, &b, dns_rootname, 0, NULL));
                RETERR(dst_gssapi_acquirecred(name, ISC_FALSE, &tctx->gsscred));
        }

        obj = NULL;
        result = cfg_map_get(options, "tkey-gssapi-keytab", &obj);
        if (result == ISC_R_SUCCESS) {
                s = cfg_obj_asstring(obj);
                tctx->gssapi_keytab = isc_mem_strdup(mctx, s);
                if (tctx->gssapi_keytab == NULL) {
                        result = ISC_R_NOMEMORY;
                        goto failure;
                }
        }

        *tctxp = tctx;
        return (ISC_R_SUCCESS);

 failure:
        dns_tkeyctx_destroy(&tctx);
        return (result);
}

---