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Diffstat (limited to 'crypto/heimdal/lib/krb5/rd_req.c')
-rw-r--r--crypto/heimdal/lib/krb5/rd_req.c465
1 files changed, 0 insertions, 465 deletions
diff --git a/crypto/heimdal/lib/krb5/rd_req.c b/crypto/heimdal/lib/krb5/rd_req.c
deleted file mode 100644
index bcf4ecf0987c7..0000000000000
--- a/crypto/heimdal/lib/krb5/rd_req.c
+++ /dev/null
@@ -1,465 +0,0 @@
-/*
- * Copyright (c) 1997 - 2000 Kungliga Tekniska Högskolan
- * (Royal Institute of Technology, Stockholm, Sweden).
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * 3. Neither the name of the Institute nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <krb5_locl.h>
-
-RCSID("$Id: rd_req.c,v 1.41 2000/02/07 13:31:55 joda Exp $");
-
-static krb5_error_code
-decrypt_tkt_enc_part (krb5_context context,
- krb5_keyblock *key,
- EncryptedData *enc_part,
- EncTicketPart *decr_part)
-{
- krb5_error_code ret;
- krb5_data plain;
- size_t len;
- krb5_crypto crypto;
-
- krb5_crypto_init(context, key, 0, &crypto);
- ret = krb5_decrypt_EncryptedData (context,
- crypto,
- KRB5_KU_TICKET,
- enc_part,
- &plain);
- krb5_crypto_destroy(context, crypto);
- if (ret)
- return ret;
-
- ret = krb5_decode_EncTicketPart(context, plain.data, plain.length,
- decr_part, &len);
- krb5_data_free (&plain);
- return ret;
-}
-
-static krb5_error_code
-decrypt_authenticator (krb5_context context,
- EncryptionKey *key,
- EncryptedData *enc_part,
- Authenticator *authenticator)
-{
- krb5_error_code ret;
- krb5_data plain;
- size_t len;
- krb5_crypto crypto;
-
- krb5_crypto_init(context, key, 0, &crypto);
- ret = krb5_decrypt_EncryptedData (context,
- crypto,
- KRB5_KU_AP_REQ_AUTH,
- enc_part,
- &plain);
- krb5_crypto_destroy(context, crypto);
- if (ret)
- return ret;
-
- ret = krb5_decode_Authenticator(context, plain.data, plain.length,
- authenticator, &len);
- krb5_data_free (&plain);
- return ret;
-}
-
-krb5_error_code
-krb5_decode_ap_req(krb5_context context,
- const krb5_data *inbuf,
- krb5_ap_req *ap_req)
-{
- krb5_error_code ret;
- size_t len;
- ret = decode_AP_REQ(inbuf->data, inbuf->length, ap_req, &len);
- if (ret)
- return ret;
- if (ap_req->pvno != 5){
- free_AP_REQ(ap_req);
- return KRB5KRB_AP_ERR_BADVERSION;
- }
- if (ap_req->msg_type != krb_ap_req){
- free_AP_REQ(ap_req);
- return KRB5KRB_AP_ERR_MSG_TYPE;
- }
- if (ap_req->ticket.tkt_vno != 5){
- free_AP_REQ(ap_req);
- return KRB5KRB_AP_ERR_BADVERSION;
- }
- return 0;
-}
-
-krb5_error_code
-krb5_decrypt_ticket(krb5_context context,
- Ticket *ticket,
- krb5_keyblock *key,
- EncTicketPart *out,
- krb5_flags flags)
-{
- EncTicketPart t;
- krb5_error_code ret;
- ret = decrypt_tkt_enc_part (context, key, &ticket->enc_part, &t);
- if (ret)
- return ret;
-
- {
- krb5_timestamp now;
- time_t start = t.authtime;
-
- krb5_timeofday (context, &now);
- if(t.starttime)
- start = *t.starttime;
- if(start - now > context->max_skew
- || (t.flags.invalid
- && !(flags & KRB5_VERIFY_AP_REQ_IGNORE_INVALID)))
- return KRB5KRB_AP_ERR_TKT_NYV;
- if(now - t.endtime > context->max_skew)
- return KRB5KRB_AP_ERR_TKT_EXPIRED;
- }
-
- if(out)
- *out = t;
- else
- free_EncTicketPart(&t);
- return 0;
-}
-
-krb5_error_code
-krb5_verify_authenticator_checksum(krb5_context context,
- krb5_auth_context ac,
- void *data,
- size_t len)
-{
- krb5_error_code ret;
- krb5_keyblock *key;
- krb5_authenticator authenticator;
- krb5_crypto crypto;
-
- ret = krb5_auth_getauthenticator (context,
- ac,
- &authenticator);
- if(ret)
- return ret;
- if(authenticator->cksum == NULL)
- return -17;
- ret = krb5_auth_con_getkey(context, ac, &key);
- if(ret) {
- krb5_free_authenticator(context, &authenticator);
- 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,
- data,
- len,
- authenticator->cksum);
- krb5_crypto_destroy(context, crypto);
-out:
- krb5_free_authenticator(context, &authenticator);
- krb5_free_keyblock(context, key);
- return ret;
-}
-
-#if 0
-static krb5_error_code
-check_transited(krb5_context context,
- krb5_ticket *ticket)
-{
- char **realms;
- int num_realms;
- krb5_error_code ret;
-
- if(ticket->ticket.transited.tr_type != DOMAIN_X500_COMPRESS)
- return KRB5KDC_ERR_TRTYPE_NOSUPP;
-
- ret = krb5_domain_x500_decode(ticket->ticket.transited.contents,
- &realms, &num_realms,
- ticket->client->realm,
- ticket->server->realm);
- if(ret)
- return ret;
- ret = krb5_check_transited_realms(context, realms, num_realms, NULL);
- free(realms);
- return ret;
-}
-#endif
-
-krb5_error_code
-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)
-{
- krb5_ticket t;
- krb5_auth_context ac;
- krb5_error_code ret;
-
- if(auth_context) {
- if(*auth_context == NULL){
- krb5_auth_con_init(context, &ac);
- *auth_context = ac;
- }else
- ac = *auth_context;
- } else
- krb5_auth_con_init(context, &ac);
-
- 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)
- return ret;
-
- principalname2krb5_principal(&t.server, ap_req->ticket.sname,
- ap_req->ticket.realm);
- principalname2krb5_principal(&t.client, t.ticket.cname,
- t.ticket.crealm);
-
- /* save key */
-
- krb5_copy_keyblock(context, &t.ticket.key, &ac->keyblock);
-
- ret = decrypt_authenticator (context,
- &t.ticket.key,
- &ap_req->authenticator,
- ac->authenticator);
- if (ret){
- /* XXX free data */
- return ret;
- }
-
- {
- krb5_principal p1, p2;
- krb5_boolean res;
-
- principalname2krb5_principal(&p1,
- ac->authenticator->cname,
- ac->authenticator->crealm);
- principalname2krb5_principal(&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)
- return KRB5KRB_AP_ERR_BADMATCH;
- }
-
- /* check addresses */
-
- if (t.ticket.caddr
- && ac->remote_address
- && !krb5_address_search (context,
- ac->remote_address,
- t.ticket.caddr))
- return KRB5KRB_AP_ERR_BADADDR;
-
- if (ac->authenticator->seq_number)
- ac->remote_seqnumber = *ac->authenticator->seq_number;
-
- /* XXX - Xor sequence numbers */
-
- /* XXX - subkeys? */
- /* And where should it be stored? */
-
- if (ac->authenticator->subkey) {
- krb5_copy_keyblock(context,
- ac->authenticator->subkey,
- &ac->remote_subkey);
- }
-
- if (ap_req_options) {
- *ap_req_options = 0;
- 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 = malloc(sizeof(**ticket));
- **ticket = t;
- } else
- krb5_free_ticket (context, &t);
- return 0;
-}
-
-
-krb5_error_code
-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_ap_req ap_req;
-
- if (*auth_context == NULL) {
- ret = krb5_auth_con_init(context, auth_context);
- if (ret)
- return ret;
- }
-
- ret = krb5_decode_ap_req(context, inbuf, &ap_req);
- if(ret)
- return ret;
-
- ret = krb5_verify_ap_req(context,
- auth_context,
- &ap_req,
- server,
- keyblock,
- 0,
- ap_req_options,
- ticket);
-
- free_AP_REQ(&ap_req);
- 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_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_ap_req ap_req;
- krb5_keyblock *keyblock = NULL;
- krb5_principal service = NULL;
-
- if (*auth_context == NULL) {
- ret = krb5_auth_con_init(context, auth_context);
- if (ret)
- return ret;
- }
-
- ret = krb5_decode_ap_req(context, inbuf, &ap_req);
- if(ret)
- return ret;
-
- if(server == NULL){
- principalname2krb5_principal(&service,
- ap_req.ticket.sname,
- ap_req.ticket.realm);
- server = service;
- }
-
- if(ap_req.ap_options.use_session_key == 0 ||
- (*auth_context)->keyblock == NULL){
- ret = get_key_from_keytab(context,
- auth_context,
- &ap_req,
- server,
- keytab,
- &keyblock);
- if(ret)
- goto out;
- }
-
-
- ret = krb5_verify_ap_req(context,
- auth_context,
- &ap_req,
- server,
- keyblock,
- 0,
- ap_req_options,
- ticket);
-
- if(keyblock != NULL)
- krb5_free_keyblock(context, keyblock);
-
-out:
- free_AP_REQ(&ap_req);
- if(service)
- krb5_free_principal(context, service);
- return ret;
-}
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