270 lines
8.0 KiB
C
270 lines
8.0 KiB
C
/*
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* Copyright (c) 1997 - 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: creds.c 22062 2007-11-11 15:41:50Z lha $");
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#undef __attribute__
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#define __attribute__(X)
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/* keep this for compatibility with older code */
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krb5_error_code KRB5_LIB_FUNCTION __attribute__((deprecated))
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krb5_free_creds_contents (krb5_context context, krb5_creds *c)
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{
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return krb5_free_cred_contents (context, c);
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}
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/**
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* Free content of krb5_creds.
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*
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* @param context Kerberos 5 context.
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* @param c krb5_creds to free.
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*
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* @return Returns 0 to indicate success. Otherwise an kerberos et
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* error code is returned, see krb5_get_error_message().
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*
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* @ingroup krb5
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_free_cred_contents (krb5_context context, krb5_creds *c)
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{
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krb5_free_principal (context, c->client);
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c->client = NULL;
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krb5_free_principal (context, c->server);
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c->server = NULL;
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krb5_free_keyblock_contents (context, &c->session);
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krb5_data_free (&c->ticket);
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krb5_data_free (&c->second_ticket);
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free_AuthorizationData (&c->authdata);
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krb5_free_addresses (context, &c->addresses);
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memset(c, 0, sizeof(*c));
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return 0;
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}
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/**
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* Copy content of krb5_creds.
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*
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* @param context Kerberos 5 context.
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* @param incred source credential
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* @param c destination credential, free with krb5_free_cred_contents().
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*
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* @return Returns 0 to indicate success. Otherwise an kerberos et
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* error code is returned, see krb5_get_error_message().
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*
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* @ingroup krb5
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_copy_creds_contents (krb5_context context,
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const krb5_creds *incred,
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krb5_creds *c)
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{
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krb5_error_code ret;
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memset(c, 0, sizeof(*c));
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ret = krb5_copy_principal (context, incred->client, &c->client);
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if (ret)
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goto fail;
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ret = krb5_copy_principal (context, incred->server, &c->server);
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if (ret)
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goto fail;
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ret = krb5_copy_keyblock_contents (context, &incred->session, &c->session);
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if (ret)
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goto fail;
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c->times = incred->times;
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ret = krb5_data_copy (&c->ticket,
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incred->ticket.data,
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incred->ticket.length);
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if (ret)
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goto fail;
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ret = krb5_data_copy (&c->second_ticket,
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incred->second_ticket.data,
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incred->second_ticket.length);
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if (ret)
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goto fail;
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ret = copy_AuthorizationData(&incred->authdata, &c->authdata);
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if (ret)
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goto fail;
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ret = krb5_copy_addresses (context,
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&incred->addresses,
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&c->addresses);
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if (ret)
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goto fail;
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c->flags = incred->flags;
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return 0;
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fail:
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krb5_free_cred_contents (context, c);
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return ret;
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}
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/**
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* Copy krb5_creds.
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*
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* @param context Kerberos 5 context.
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* @param incred source credential
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* @param outcred destination credential, free with krb5_free_creds().
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*
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* @return Returns 0 to indicate success. Otherwise an kerberos et
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* error code is returned, see krb5_get_error_message().
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*
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* @ingroup krb5
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_copy_creds (krb5_context context,
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const krb5_creds *incred,
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krb5_creds **outcred)
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{
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krb5_creds *c;
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c = malloc (sizeof (*c));
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if (c == NULL) {
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krb5_set_error_string (context, "malloc: out of memory");
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return ENOMEM;
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}
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memset (c, 0, sizeof(*c));
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*outcred = c;
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return krb5_copy_creds_contents (context, incred, c);
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}
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/**
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* Free krb5_creds.
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*
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* @param context Kerberos 5 context.
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* @param c krb5_creds to free.
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*
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* @return Returns 0 to indicate success. Otherwise an kerberos et
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* error code is returned, see krb5_get_error_message().
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*
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* @ingroup krb5
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_free_creds (krb5_context context, krb5_creds *c)
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{
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krb5_free_cred_contents (context, c);
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free (c);
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return 0;
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}
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/* XXX this do not belong here */
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static krb5_boolean
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krb5_times_equal(const krb5_times *a, const krb5_times *b)
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{
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return a->starttime == b->starttime &&
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a->authtime == b->authtime &&
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a->endtime == b->endtime &&
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a->renew_till == b->renew_till;
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}
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/**
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* Return TRUE if `mcreds' and `creds' are equal (`whichfields'
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* determines what equal means).
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*
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* @param context Kerberos 5 context.
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* @param whichfields which fields to compare.
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* @param mcreds cred to compare with.
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* @param creds cred to compare with.
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*
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* @return return TRUE if mcred and creds are equal, FALSE if not.
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*
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* @ingroup krb5
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*/
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krb5_boolean KRB5_LIB_FUNCTION
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krb5_compare_creds(krb5_context context, krb5_flags whichfields,
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const krb5_creds * mcreds, const krb5_creds * creds)
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{
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krb5_boolean match = TRUE;
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if (match && mcreds->server) {
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if (whichfields & (KRB5_TC_DONT_MATCH_REALM | KRB5_TC_MATCH_SRV_NAMEONLY))
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match = krb5_principal_compare_any_realm (context, mcreds->server,
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creds->server);
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else
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match = krb5_principal_compare (context, mcreds->server,
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creds->server);
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}
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if (match && mcreds->client) {
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if(whichfields & KRB5_TC_DONT_MATCH_REALM)
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match = krb5_principal_compare_any_realm (context, mcreds->client,
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creds->client);
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else
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match = krb5_principal_compare (context, mcreds->client,
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creds->client);
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}
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if (match && (whichfields & KRB5_TC_MATCH_KEYTYPE))
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match = krb5_enctypes_compatible_keys(context,
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mcreds->session.keytype,
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creds->session.keytype);
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if (match && (whichfields & KRB5_TC_MATCH_FLAGS_EXACT))
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match = mcreds->flags.i == creds->flags.i;
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if (match && (whichfields & KRB5_TC_MATCH_FLAGS))
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match = (creds->flags.i & mcreds->flags.i) == mcreds->flags.i;
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if (match && (whichfields & KRB5_TC_MATCH_TIMES_EXACT))
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match = krb5_times_equal(&mcreds->times, &creds->times);
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if (match && (whichfields & KRB5_TC_MATCH_TIMES))
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/* compare only expiration times */
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match = (mcreds->times.renew_till <= creds->times.renew_till) &&
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(mcreds->times.endtime <= creds->times.endtime);
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if (match && (whichfields & KRB5_TC_MATCH_AUTHDATA)) {
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unsigned int i;
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if(mcreds->authdata.len != creds->authdata.len)
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match = FALSE;
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else
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for(i = 0; match && i < mcreds->authdata.len; i++)
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match = (mcreds->authdata.val[i].ad_type ==
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creds->authdata.val[i].ad_type) &&
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(krb5_data_cmp(&mcreds->authdata.val[i].ad_data,
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&creds->authdata.val[i].ad_data) == 0);
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}
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if (match && (whichfields & KRB5_TC_MATCH_2ND_TKT))
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match = (krb5_data_cmp(&mcreds->second_ticket, &creds->second_ticket) == 0);
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if (match && (whichfields & KRB5_TC_MATCH_IS_SKEY))
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match = ((mcreds->second_ticket.length == 0) ==
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(creds->second_ticket.length == 0));
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return match;
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}
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