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/*
* Copyright (c) 2003 - 2005 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 "gssapi_locl.h"
RCSID("$Id: compat.c,v 1.10 2005/05/30 20:51:51 lha Exp $");
krb5_error_code
_gss_check_compat(OM_uint32 *minor_status, gss_name_t name,
const char *option, krb5_boolean *compat,
krb5_boolean match_val)
{
krb5_error_code ret = 0;
char **p, **q;
krb5_principal match;
p = krb5_config_get_strings(gssapi_krb5_context, NULL, "gssapi",
option, NULL);
if(p == NULL)
return 0;
match = NULL;
for(q = p; *q; q++) {
ret = krb5_parse_name(gssapi_krb5_context, *q, &match);
if (ret)
break;
if (krb5_principal_match(gssapi_krb5_context, name, match)) {
*compat = match_val;
break;
}
krb5_free_principal(gssapi_krb5_context, match);
match = NULL;
}
if (match)
krb5_free_principal(gssapi_krb5_context, match);
krb5_config_free_strings(p);
if (ret) {
if (minor_status)
*minor_status = ret;
return GSS_S_FAILURE;
}
return 0;
}
/*
* ctx->ctx_id_mutex is assumed to be locked
*/
OM_uint32
_gss_DES3_get_mic_compat(OM_uint32 *minor_status, gss_ctx_id_t ctx)
{
krb5_boolean use_compat = FALSE;
OM_uint32 ret;
if ((ctx->more_flags & COMPAT_OLD_DES3_SELECTED) == 0) {
ret = _gss_check_compat(minor_status, ctx->target,
"broken_des3_mic", &use_compat, TRUE);
if (ret)
return ret;
ret = _gss_check_compat(minor_status, ctx->target,
"correct_des3_mic", &use_compat, FALSE);
if (ret)
return ret;
if (use_compat)
ctx->more_flags |= COMPAT_OLD_DES3;
ctx->more_flags |= COMPAT_OLD_DES3_SELECTED;
}
return 0;
}
OM_uint32
gss_krb5_compat_des3_mic(OM_uint32 *minor_status, gss_ctx_id_t ctx, int on)
{
*minor_status = 0;
HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex);
if (on) {
ctx->more_flags |= COMPAT_OLD_DES3;
} else {
ctx->more_flags &= ~COMPAT_OLD_DES3;
}
ctx->more_flags |= COMPAT_OLD_DES3_SELECTED;
HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
return 0;
}
/*
* For compatability with the Windows SPNEGO implementation, the
* default is to ignore the mechListMIC unless the initiator specified
* CFX or configured in krb5.conf with the option
* [gssapi]require_mechlist_mic=target-principal-pattern.
* The option is valid for both initiator and acceptor.
*/
OM_uint32
_gss_spnego_require_mechlist_mic(OM_uint32 *minor_status,
gss_ctx_id_t ctx,
krb5_boolean *require_mic)
{
OM_uint32 ret;
int is_cfx = 0;
gsskrb5_is_cfx(ctx, &is_cfx);
if (is_cfx) {
/* CFX session key was used */
*require_mic = TRUE;
} else {
*require_mic = FALSE;
ret = _gss_check_compat(minor_status, ctx->target,
"require_mechlist_mic",
require_mic, TRUE);
if (ret)
return ret;
}
*minor_status = 0;
return GSS_S_COMPLETE;
}
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