wmi-1.3.16 from opsview.com
This commit is contained in:
Are Casilla
@@ -0,0 +1,835 @@
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/*
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* Copyright (c) 1997 - 2001, 2003 - 2005 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <krb5_locl.h>
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RCSID("$Id: rd_req.c,v 1.68 2006/11/07 17:11:31 lha Exp $");
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static krb5_error_code
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decrypt_tkt_enc_part (krb5_context context,
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krb5_keyblock *key,
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EncryptedData *enc_part,
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EncTicketPart *decr_part)
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{
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krb5_error_code ret;
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krb5_data plain;
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size_t len;
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krb5_crypto crypto;
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ret = krb5_crypto_init(context, key, 0, &crypto);
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if (ret)
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return ret;
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ret = krb5_decrypt_EncryptedData (context,
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crypto,
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KRB5_KU_TICKET,
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enc_part,
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&plain);
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krb5_crypto_destroy(context, crypto);
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if (ret)
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return ret;
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ret = krb5_decode_EncTicketPart(context, plain.data, plain.length,
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decr_part, &len);
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krb5_data_free (&plain);
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return ret;
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}
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static krb5_error_code
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decrypt_authenticator (krb5_context context,
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EncryptionKey *key,
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EncryptedData *enc_part,
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Authenticator *authenticator,
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krb5_key_usage usage)
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{
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krb5_error_code ret;
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krb5_data plain;
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size_t len;
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krb5_crypto crypto;
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ret = krb5_crypto_init(context, key, 0, &crypto);
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if (ret)
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return ret;
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ret = krb5_decrypt_EncryptedData (context,
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crypto,
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usage /* KRB5_KU_AP_REQ_AUTH */,
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enc_part,
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&plain);
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/* for backwards compatibility, also try the old usage */
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if (ret && usage == KRB5_KU_TGS_REQ_AUTH)
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ret = krb5_decrypt_EncryptedData (context,
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crypto,
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KRB5_KU_AP_REQ_AUTH,
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enc_part,
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&plain);
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krb5_crypto_destroy(context, crypto);
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if (ret)
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return ret;
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ret = krb5_decode_Authenticator(context, plain.data, plain.length,
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authenticator, &len);
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krb5_data_free (&plain);
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return ret;
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_decode_ap_req(krb5_context context,
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const krb5_data *inbuf,
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krb5_ap_req *ap_req)
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{
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krb5_error_code ret;
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size_t len;
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ret = decode_AP_REQ(inbuf->data, inbuf->length, ap_req, &len);
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if (ret)
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return ret;
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if (ap_req->pvno != 5){
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free_AP_REQ(ap_req);
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krb5_clear_error_string (context);
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return KRB5KRB_AP_ERR_BADVERSION;
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}
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if (ap_req->msg_type != krb_ap_req){
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free_AP_REQ(ap_req);
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krb5_clear_error_string (context);
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return KRB5KRB_AP_ERR_MSG_TYPE;
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}
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if (ap_req->ticket.tkt_vno != 5){
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free_AP_REQ(ap_req);
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krb5_clear_error_string (context);
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return KRB5KRB_AP_ERR_BADVERSION;
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}
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return 0;
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}
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static krb5_error_code
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check_transited(krb5_context context, Ticket *ticket, EncTicketPart *enc)
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{
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char **realms;
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int num_realms;
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krb5_error_code ret;
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/*
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* Windows 2000 and 2003 uses this inside their TGT so its normaly
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* not seen by others, however, samba4 joined with a Windows AD as
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* a Domain Controller gets exposed to this.
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*/
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if(enc->transited.tr_type == 0 && enc->transited.contents.length == 0)
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return 0;
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if(enc->transited.tr_type != DOMAIN_X500_COMPRESS)
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return KRB5KDC_ERR_TRTYPE_NOSUPP;
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if(enc->transited.contents.length == 0)
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return 0;
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ret = krb5_domain_x500_decode(context, enc->transited.contents,
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&realms, &num_realms,
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enc->crealm,
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ticket->realm);
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if(ret)
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return ret;
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ret = krb5_check_transited(context, enc->crealm,
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ticket->realm,
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realms, num_realms, NULL);
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free(realms);
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return ret;
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}
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static krb5_error_code
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find_etypelist(krb5_context context,
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krb5_auth_context auth_context,
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EtypeList *etypes)
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{
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krb5_error_code ret;
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krb5_authdata *ad;
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krb5_authdata adIfRelevant;
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unsigned i;
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adIfRelevant.len = 0;
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etypes->len = 0;
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etypes->val = NULL;
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ad = auth_context->authenticator->authorization_data;
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if (ad == NULL)
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return 0;
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for (i = 0; i < ad->len; i++) {
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if (ad->val[i].ad_type == KRB5_AUTHDATA_IF_RELEVANT) {
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ret = decode_AD_IF_RELEVANT(ad->val[i].ad_data.data,
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ad->val[i].ad_data.length,
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&adIfRelevant,
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NULL);
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if (ret)
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return ret;
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if (adIfRelevant.len == 1 &&
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adIfRelevant.val[0].ad_type ==
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KRB5_AUTHDATA_GSS_API_ETYPE_NEGOTIATION) {
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break;
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}
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free_AD_IF_RELEVANT(&adIfRelevant);
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adIfRelevant.len = 0;
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}
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}
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if (adIfRelevant.len == 0)
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return 0;
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ret = decode_EtypeList(adIfRelevant.val[0].ad_data.data,
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adIfRelevant.val[0].ad_data.length,
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etypes,
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NULL);
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free_AD_IF_RELEVANT(&adIfRelevant);
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return ret;
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_decrypt_ticket(krb5_context context,
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Ticket *ticket,
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krb5_keyblock *key,
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EncTicketPart *out,
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krb5_flags flags)
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{
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EncTicketPart t;
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krb5_error_code ret;
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ret = decrypt_tkt_enc_part (context, key, &ticket->enc_part, &t);
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if (ret)
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return ret;
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{
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krb5_timestamp now;
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time_t start = t.authtime;
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krb5_timeofday (context, &now);
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if(t.starttime)
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start = *t.starttime;
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if(start - now > context->max_skew
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|| (t.flags.invalid
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&& !(flags & KRB5_VERIFY_AP_REQ_IGNORE_INVALID))) {
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free_EncTicketPart(&t);
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krb5_clear_error_string (context);
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return KRB5KRB_AP_ERR_TKT_NYV;
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}
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if(now - t.endtime > context->max_skew) {
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free_EncTicketPart(&t);
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krb5_clear_error_string (context);
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return KRB5KRB_AP_ERR_TKT_EXPIRED;
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}
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if(!t.flags.transited_policy_checked) {
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ret = check_transited(context, ticket, &t);
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if(ret) {
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free_EncTicketPart(&t);
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return ret;
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}
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}
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}
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if(out)
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*out = t;
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else
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free_EncTicketPart(&t);
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return 0;
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}
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krb5_error_code KRB5_LIB_FUNCTION
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||||
krb5_verify_authenticator_checksum(krb5_context context,
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krb5_auth_context ac,
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void *data,
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||||
size_t len)
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||||
{
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||||
krb5_error_code ret;
|
||||
krb5_keyblock *key;
|
||||
krb5_authenticator authenticator;
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krb5_crypto crypto;
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||||
ret = krb5_auth_con_getauthenticator (context,
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||||
ac,
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||||
&authenticator);
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||||
if(ret)
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||||
return ret;
|
||||
if(authenticator->cksum == NULL) {
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||||
krb5_free_authenticator(context, &authenticator);
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||||
return -17;
|
||||
}
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ret = krb5_auth_con_getkey(context, ac, &key);
|
||||
if(ret) {
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||||
krb5_free_authenticator(context, &authenticator);
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||||
return ret;
|
||||
}
|
||||
ret = krb5_crypto_init(context, key, 0, &crypto);
|
||||
if(ret)
|
||||
goto out;
|
||||
ret = krb5_verify_checksum (context,
|
||||
crypto,
|
||||
KRB5_KU_AP_REQ_AUTH_CKSUM,
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||||
data,
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||||
len,
|
||||
authenticator->cksum);
|
||||
krb5_crypto_destroy(context, crypto);
|
||||
out:
|
||||
krb5_free_authenticator(context, &authenticator);
|
||||
krb5_free_keyblock(context, key);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
krb5_error_code KRB5_LIB_FUNCTION
|
||||
krb5_verify_ap_req(krb5_context context,
|
||||
krb5_auth_context *auth_context,
|
||||
krb5_ap_req *ap_req,
|
||||
krb5_const_principal server,
|
||||
krb5_keyblock *keyblock,
|
||||
krb5_flags flags,
|
||||
krb5_flags *ap_req_options,
|
||||
krb5_ticket **ticket)
|
||||
{
|
||||
return krb5_verify_ap_req2 (context,
|
||||
auth_context,
|
||||
ap_req,
|
||||
server,
|
||||
keyblock,
|
||||
flags,
|
||||
ap_req_options,
|
||||
ticket,
|
||||
KRB5_KU_AP_REQ_AUTH);
|
||||
}
|
||||
|
||||
krb5_error_code KRB5_LIB_FUNCTION
|
||||
krb5_verify_ap_req2(krb5_context context,
|
||||
krb5_auth_context *auth_context,
|
||||
krb5_ap_req *ap_req,
|
||||
krb5_const_principal server,
|
||||
krb5_keyblock *keyblock,
|
||||
krb5_flags flags,
|
||||
krb5_flags *ap_req_options,
|
||||
krb5_ticket **ticket,
|
||||
krb5_key_usage usage)
|
||||
{
|
||||
krb5_ticket *t;
|
||||
krb5_auth_context ac;
|
||||
krb5_error_code ret;
|
||||
EtypeList etypes;
|
||||
|
||||
if (ticket)
|
||||
*ticket = NULL;
|
||||
|
||||
if (auth_context && *auth_context) {
|
||||
ac = *auth_context;
|
||||
} else {
|
||||
ret = krb5_auth_con_init (context, &ac);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
|
||||
t = calloc(1, sizeof(*t));
|
||||
if (t == NULL) {
|
||||
ret = ENOMEM;
|
||||
krb5_clear_error_string (context);
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (ap_req->ap_options.use_session_key && ac->keyblock){
|
||||
ret = krb5_decrypt_ticket(context, &ap_req->ticket,
|
||||
ac->keyblock,
|
||||
&t->ticket,
|
||||
flags);
|
||||
krb5_free_keyblock(context, ac->keyblock);
|
||||
ac->keyblock = NULL;
|
||||
}else
|
||||
ret = krb5_decrypt_ticket(context, &ap_req->ticket,
|
||||
keyblock,
|
||||
&t->ticket,
|
||||
flags);
|
||||
|
||||
if(ret)
|
||||
goto out;
|
||||
|
||||
ret = _krb5_principalname2krb5_principal(context,
|
||||
&t->server,
|
||||
ap_req->ticket.sname,
|
||||
ap_req->ticket.realm);
|
||||
if (ret) goto out;
|
||||
ret = _krb5_principalname2krb5_principal(context,
|
||||
&t->client,
|
||||
t->ticket.cname,
|
||||
t->ticket.crealm);
|
||||
if (ret) goto out;
|
||||
|
||||
/* save key */
|
||||
|
||||
ret = krb5_copy_keyblock(context, &t->ticket.key, &ac->keyblock);
|
||||
if (ret) goto out;
|
||||
|
||||
ret = decrypt_authenticator (context,
|
||||
&t->ticket.key,
|
||||
&ap_req->authenticator,
|
||||
ac->authenticator,
|
||||
usage);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
{
|
||||
krb5_principal p1, p2;
|
||||
krb5_boolean res;
|
||||
|
||||
_krb5_principalname2krb5_principal(context,
|
||||
&p1,
|
||||
ac->authenticator->cname,
|
||||
ac->authenticator->crealm);
|
||||
_krb5_principalname2krb5_principal(context,
|
||||
&p2,
|
||||
t->ticket.cname,
|
||||
t->ticket.crealm);
|
||||
res = krb5_principal_compare (context, p1, p2);
|
||||
krb5_free_principal (context, p1);
|
||||
krb5_free_principal (context, p2);
|
||||
if (!res) {
|
||||
ret = KRB5KRB_AP_ERR_BADMATCH;
|
||||
krb5_clear_error_string (context);
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
/* check addresses */
|
||||
|
||||
if (t->ticket.caddr
|
||||
&& ac->remote_address
|
||||
&& !krb5_address_search (context,
|
||||
ac->remote_address,
|
||||
t->ticket.caddr)) {
|
||||
ret = KRB5KRB_AP_ERR_BADADDR;
|
||||
krb5_clear_error_string (context);
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* check timestamp in authenticator */
|
||||
{
|
||||
krb5_timestamp now;
|
||||
|
||||
krb5_timeofday (context, &now);
|
||||
|
||||
if (abs(ac->authenticator->ctime - now) > context->max_skew) {
|
||||
ret = KRB5KRB_AP_ERR_SKEW;
|
||||
krb5_clear_error_string (context);
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
if (ac->authenticator->seq_number)
|
||||
krb5_auth_con_setremoteseqnumber(context, ac,
|
||||
*ac->authenticator->seq_number);
|
||||
|
||||
/* XXX - Xor sequence numbers */
|
||||
|
||||
if (ac->authenticator->subkey) {
|
||||
ret = krb5_auth_con_setremotesubkey(context, ac,
|
||||
ac->authenticator->subkey);
|
||||
if (ret)
|
||||
goto out;
|
||||
}
|
||||
|
||||
ret = find_etypelist(context, ac, &etypes);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
ac->keytype = ETYPE_NULL;
|
||||
|
||||
if (etypes.val) {
|
||||
int i;
|
||||
|
||||
for (i = 0; i < etypes.len; i++) {
|
||||
if (krb5_enctype_valid(context, etypes.val[i]) == 0) {
|
||||
ac->keytype = etypes.val[i];
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (ap_req_options) {
|
||||
*ap_req_options = 0;
|
||||
if (ac->keytype != ETYPE_NULL)
|
||||
*ap_req_options |= AP_OPTS_USE_SUBKEY;
|
||||
if (ap_req->ap_options.use_session_key)
|
||||
*ap_req_options |= AP_OPTS_USE_SESSION_KEY;
|
||||
if (ap_req->ap_options.mutual_required)
|
||||
*ap_req_options |= AP_OPTS_MUTUAL_REQUIRED;
|
||||
}
|
||||
|
||||
if(ticket)
|
||||
*ticket = t;
|
||||
else
|
||||
krb5_free_ticket (context, t);
|
||||
if (auth_context) {
|
||||
if (*auth_context == NULL)
|
||||
*auth_context = ac;
|
||||
} else
|
||||
krb5_auth_con_free (context, ac);
|
||||
free_EtypeList(&etypes);
|
||||
return 0;
|
||||
out:
|
||||
if (t)
|
||||
krb5_free_ticket (context, t);
|
||||
if (auth_context == NULL || *auth_context == NULL)
|
||||
krb5_auth_con_free (context, ac);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
struct krb5_rd_req_in_ctx {
|
||||
krb5_keytab keytab;
|
||||
krb5_keyblock *keyblock;
|
||||
};
|
||||
|
||||
struct krb5_rd_req_out_ctx {
|
||||
krb5_keyblock *keyblock;
|
||||
krb5_flags ap_req_options;
|
||||
krb5_ticket *ticket;
|
||||
};
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
krb5_error_code KRB5_LIB_FUNCTION
|
||||
krb5_rd_req_in_ctx_alloc(krb5_context context, krb5_rd_req_in_ctx *ctx)
|
||||
{
|
||||
*ctx = calloc(1, sizeof(**ctx));
|
||||
if (*ctx == NULL) {
|
||||
krb5_set_error_string(context, "out of memory");
|
||||
return ENOMEM;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
krb5_error_code KRB5_LIB_FUNCTION
|
||||
krb5_rd_req_in_set_keytab(krb5_context context,
|
||||
krb5_rd_req_in_ctx in,
|
||||
krb5_keytab keytab)
|
||||
{
|
||||
in->keytab = keytab; /* XXX should make copy */
|
||||
return 0;
|
||||
}
|
||||
|
||||
krb5_error_code KRB5_LIB_FUNCTION
|
||||
krb5_rd_req_in_set_keyblock(krb5_context context,
|
||||
krb5_rd_req_in_ctx in,
|
||||
krb5_keyblock *keyblock)
|
||||
{
|
||||
in->keyblock = keyblock; /* XXX should make copy */
|
||||
return 0;
|
||||
}
|
||||
|
||||
krb5_error_code KRB5_LIB_FUNCTION
|
||||
krb5_rd_req_out_get_ap_req_options(krb5_context context,
|
||||
krb5_rd_req_out_ctx out,
|
||||
krb5_flags *ap_req_options)
|
||||
{
|
||||
*ap_req_options = out->ap_req_options;
|
||||
return 0;
|
||||
}
|
||||
|
||||
krb5_error_code KRB5_LIB_FUNCTION
|
||||
krb5_rd_req_out_get_ticket(krb5_context context,
|
||||
krb5_rd_req_out_ctx out,
|
||||
krb5_ticket **ticket)
|
||||
{
|
||||
return krb5_copy_ticket(context, out->ticket, ticket);
|
||||
}
|
||||
|
||||
krb5_error_code KRB5_LIB_FUNCTION
|
||||
krb5_rd_req_out_get_keyblock(krb5_context context,
|
||||
krb5_rd_req_out_ctx out,
|
||||
krb5_keyblock **keyblock)
|
||||
{
|
||||
return krb5_copy_keyblock(context, out->keyblock, keyblock);
|
||||
}
|
||||
|
||||
void KRB5_LIB_FUNCTION
|
||||
krb5_rd_req_in_ctx_free(krb5_context context, krb5_rd_req_in_ctx ctx)
|
||||
{
|
||||
free(ctx);
|
||||
}
|
||||
|
||||
krb5_error_code KRB5_LIB_FUNCTION
|
||||
_krb5_rd_req_out_ctx_alloc(krb5_context context, krb5_rd_req_out_ctx *ctx)
|
||||
{
|
||||
*ctx = calloc(1, sizeof(**ctx));
|
||||
if (*ctx == NULL) {
|
||||
krb5_set_error_string(context, "out of memory");
|
||||
return ENOMEM;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
void KRB5_LIB_FUNCTION
|
||||
krb5_rd_req_out_ctx_free(krb5_context context, krb5_rd_req_out_ctx ctx)
|
||||
{
|
||||
krb5_free_keyblock(context, ctx->keyblock);
|
||||
free(ctx);
|
||||
}
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
krb5_error_code KRB5_LIB_FUNCTION
|
||||
krb5_rd_req(krb5_context context,
|
||||
krb5_auth_context *auth_context,
|
||||
const krb5_data *inbuf,
|
||||
krb5_const_principal server,
|
||||
krb5_keytab keytab,
|
||||
krb5_flags *ap_req_options,
|
||||
krb5_ticket **ticket)
|
||||
{
|
||||
krb5_error_code ret;
|
||||
krb5_rd_req_in_ctx in;
|
||||
krb5_rd_req_out_ctx out;
|
||||
|
||||
ret = krb5_rd_req_in_ctx_alloc(context, &in);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = krb5_rd_req_in_set_keytab(context, in, keytab);
|
||||
if (ret) {
|
||||
krb5_rd_req_in_ctx_free(context, in);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = krb5_rd_req_ctx(context, auth_context, inbuf, server, in, &out);
|
||||
krb5_rd_req_in_ctx_free(context, in);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
if (ap_req_options)
|
||||
*ap_req_options = out->ap_req_options;
|
||||
if (ticket) {
|
||||
ret = krb5_copy_ticket(context, out->ticket, ticket);
|
||||
if (ret)
|
||||
goto out;
|
||||
}
|
||||
|
||||
out:
|
||||
krb5_rd_req_out_ctx_free(context, out);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
krb5_error_code KRB5_LIB_FUNCTION
|
||||
krb5_rd_req_with_keyblock(krb5_context context,
|
||||
krb5_auth_context *auth_context,
|
||||
const krb5_data *inbuf,
|
||||
krb5_const_principal server,
|
||||
krb5_keyblock *keyblock,
|
||||
krb5_flags *ap_req_options,
|
||||
krb5_ticket **ticket)
|
||||
{
|
||||
krb5_error_code ret;
|
||||
krb5_rd_req_in_ctx in;
|
||||
krb5_rd_req_out_ctx out;
|
||||
|
||||
ret = krb5_rd_req_in_ctx_alloc(context, &in);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = krb5_rd_req_in_set_keyblock(context, in, keyblock);
|
||||
if (ret) {
|
||||
krb5_rd_req_in_ctx_free(context, in);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = krb5_rd_req_ctx(context, auth_context, inbuf, server, in, &out);
|
||||
krb5_rd_req_in_ctx_free(context, in);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
if (ap_req_options)
|
||||
*ap_req_options = out->ap_req_options;
|
||||
if (ticket) {
|
||||
ret = krb5_copy_ticket(context, out->ticket, ticket);
|
||||
if (ret)
|
||||
goto out;
|
||||
}
|
||||
|
||||
out:
|
||||
krb5_rd_req_out_ctx_free(context, out);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
static krb5_error_code
|
||||
get_key_from_keytab(krb5_context context,
|
||||
krb5_auth_context *auth_context,
|
||||
krb5_ap_req *ap_req,
|
||||
krb5_const_principal server,
|
||||
krb5_keytab keytab,
|
||||
krb5_keyblock **out_key)
|
||||
{
|
||||
krb5_keytab_entry entry;
|
||||
krb5_error_code ret;
|
||||
int kvno;
|
||||
krb5_keytab real_keytab;
|
||||
|
||||
if(keytab == NULL)
|
||||
krb5_kt_default(context, &real_keytab);
|
||||
else
|
||||
real_keytab = keytab;
|
||||
|
||||
if (ap_req->ticket.enc_part.kvno)
|
||||
kvno = *ap_req->ticket.enc_part.kvno;
|
||||
else
|
||||
kvno = 0;
|
||||
|
||||
ret = krb5_kt_get_entry (context,
|
||||
real_keytab,
|
||||
server,
|
||||
kvno,
|
||||
ap_req->ticket.enc_part.etype,
|
||||
&entry);
|
||||
if(ret)
|
||||
goto out;
|
||||
ret = krb5_copy_keyblock(context, &entry.keyblock, out_key);
|
||||
krb5_kt_free_entry (context, &entry);
|
||||
out:
|
||||
if(keytab == NULL)
|
||||
krb5_kt_close(context, real_keytab);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
krb5_error_code KRB5_LIB_FUNCTION
|
||||
krb5_rd_req_ctx(krb5_context context,
|
||||
krb5_auth_context *auth_context,
|
||||
const krb5_data *inbuf,
|
||||
krb5_const_principal server,
|
||||
krb5_rd_req_in_ctx inctx,
|
||||
krb5_rd_req_out_ctx *outctx)
|
||||
{
|
||||
krb5_error_code ret;
|
||||
krb5_ap_req ap_req;
|
||||
krb5_principal service = NULL;
|
||||
krb5_rd_req_out_ctx o = NULL;
|
||||
|
||||
ret = _krb5_rd_req_out_ctx_alloc(context, &o);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
if (*auth_context == NULL) {
|
||||
ret = krb5_auth_con_init(context, auth_context);
|
||||
if (ret)
|
||||
goto out;
|
||||
}
|
||||
|
||||
ret = krb5_decode_ap_req(context, inbuf, &ap_req);
|
||||
if(ret)
|
||||
goto out;
|
||||
|
||||
if(server == NULL){
|
||||
ret = _krb5_principalname2krb5_principal(context,
|
||||
&service,
|
||||
ap_req.ticket.sname,
|
||||
ap_req.ticket.realm);
|
||||
if (ret)
|
||||
goto out;
|
||||
server = service;
|
||||
}
|
||||
if (ap_req.ap_options.use_session_key &&
|
||||
(*auth_context)->keyblock == NULL) {
|
||||
krb5_set_error_string(context, "krb5_rd_req: user to user auth "
|
||||
"without session key given");
|
||||
ret = KRB5KRB_AP_ERR_NOKEY;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if((*auth_context)->keyblock){
|
||||
ret = krb5_copy_keyblock(context,
|
||||
(*auth_context)->keyblock,
|
||||
&o->keyblock);
|
||||
if (ret)
|
||||
goto out;
|
||||
} else if(inctx->keyblock){
|
||||
ret = krb5_copy_keyblock(context,
|
||||
inctx->keyblock,
|
||||
&o->keyblock);
|
||||
if (ret)
|
||||
goto out;
|
||||
} else {
|
||||
krb5_keytab keytab = NULL;
|
||||
|
||||
if (inctx && inctx->keytab)
|
||||
keytab = inctx->keytab;
|
||||
|
||||
ret = get_key_from_keytab(context,
|
||||
auth_context,
|
||||
&ap_req,
|
||||
server,
|
||||
keytab,
|
||||
&o->keyblock);
|
||||
if(ret)
|
||||
goto out;
|
||||
}
|
||||
|
||||
ret = krb5_verify_ap_req(context,
|
||||
auth_context,
|
||||
&ap_req,
|
||||
server,
|
||||
o->keyblock,
|
||||
0,
|
||||
&o->ap_req_options,
|
||||
&o->ticket);
|
||||
|
||||
out:
|
||||
if (ret || outctx == NULL) {
|
||||
krb5_rd_req_out_ctx_free(context, o);
|
||||
} else
|
||||
*outctx = o;
|
||||
|
||||
free_AP_REQ(&ap_req);
|
||||
if(service)
|
||||
krb5_free_principal(context, service);
|
||||
return ret;
|
||||
}
|
||||
Reference in New Issue
Block a user