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/*
* Copyright (c) 2004, PADL Software Pty Ltd.
* 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 PADL Software 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 PADL SOFTWARE 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 PADL SOFTWARE 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 "gsskrb5_locl.h"
static OM_uint32
import_cred(OM_uint32 *minor_status,
krb5_context context,
gss_cred_id_t *cred_handle,
const gss_buffer_t value)
{
OM_uint32 major_stat;
krb5_error_code ret;
krb5_principal keytab_principal = NULL;
krb5_keytab keytab = NULL;
krb5_storage *sp = NULL;
krb5_ccache id = NULL;
char *str;
if (cred_handle == NULL || *cred_handle != GSS_C_NO_CREDENTIAL) {
*minor_status = 0;
return GSS_S_FAILURE;
}
sp = krb5_storage_from_mem(value->value, value->length);
if (sp == NULL) {
*minor_status = 0;
return GSS_S_FAILURE;
}
/* credential cache name */
ret = krb5_ret_string(sp, &str);
if (ret) {
*minor_status = ret;
major_stat = GSS_S_FAILURE;
goto out;
}
if (str[0]) {
ret = krb5_cc_resolve(context, str, &id);
if (ret) {
*minor_status = ret;
major_stat = GSS_S_FAILURE;
goto out;
}
}
free(str);
str = NULL;
/* keytab principal name */
ret = krb5_ret_string(sp, &str);
if (ret == 0 && str[0])
ret = krb5_parse_name(context, str, &keytab_principal);
if (ret) {
*minor_status = ret;
major_stat = GSS_S_FAILURE;
goto out;
}
free(str);
str = NULL;
/* keytab principal */
ret = krb5_ret_string(sp, &str);
if (ret) {
*minor_status = ret;
major_stat = GSS_S_FAILURE;
goto out;
}
if (str[0]) {
ret = krb5_kt_resolve(context, str, &keytab);
if (ret) {
*minor_status = ret;
major_stat = GSS_S_FAILURE;
goto out;
}
}
free(str);
str = NULL;
major_stat = _gsskrb5_krb5_import_cred(minor_status, id, keytab_principal,
keytab, cred_handle);
out:
if (id)
krb5_cc_close(context, id);
if (keytab_principal)
krb5_free_principal(context, keytab_principal);
if (keytab)
krb5_kt_close(context, keytab);
if (str)
free(str);
if (sp)
krb5_storage_free(sp);
return major_stat;
}
static OM_uint32
allowed_enctypes(OM_uint32 *minor_status,
krb5_context context,
gss_cred_id_t *cred_handle,
const gss_buffer_t value)
{
OM_uint32 major_stat;
krb5_error_code ret;
size_t len, i;
krb5_enctype *enctypes = NULL;
krb5_storage *sp = NULL;
gsskrb5_cred cred;
if (cred_handle == NULL || *cred_handle == GSS_C_NO_CREDENTIAL) {
*minor_status = 0;
return GSS_S_FAILURE;
}
cred = (gsskrb5_cred)*cred_handle;
if ((value->length % 4) != 0) {
*minor_status = 0;
major_stat = GSS_S_FAILURE;
goto out;
}
len = value->length / 4;
enctypes = malloc((len + 1) * 4);
if (enctypes == NULL) {
*minor_status = ENOMEM;
major_stat = GSS_S_FAILURE;
goto out;
}
sp = krb5_storage_from_mem(value->value, value->length);
if (sp == NULL) {
*minor_status = ENOMEM;
major_stat = GSS_S_FAILURE;
goto out;
}
for (i = 0; i < len; i++) {
uint32_t e;
ret = krb5_ret_uint32(sp, &e);
if (ret) {
*minor_status = ret;
major_stat = GSS_S_FAILURE;
goto out;
}
enctypes[i] = e;
}
enctypes[i] = 0;
if (cred->enctypes)
free(cred->enctypes);
cred->enctypes = enctypes;
krb5_storage_free(sp);
return GSS_S_COMPLETE;
out:
if (sp)
krb5_storage_free(sp);
if (enctypes)
free(enctypes);
return major_stat;
}
static OM_uint32
no_ci_flags(OM_uint32 *minor_status,
krb5_context context,
gss_cred_id_t *cred_handle,
const gss_buffer_t value)
{
gsskrb5_cred cred;
if (cred_handle == NULL || *cred_handle == GSS_C_NO_CREDENTIAL) {
*minor_status = 0;
return GSS_S_FAILURE;
}
cred = (gsskrb5_cred)*cred_handle;
cred->cred_flags |= GSS_CF_NO_CI_FLAGS;
*minor_status = 0;
return GSS_S_COMPLETE;
}
OM_uint32 GSSAPI_CALLCONV
_gsskrb5_set_cred_option
(OM_uint32 *minor_status,
gss_cred_id_t *cred_handle,
const gss_OID desired_object,
const gss_buffer_t value)
{
krb5_context context;
GSSAPI_KRB5_INIT (&context);
if (value == GSS_C_NO_BUFFER) {
*minor_status = EINVAL;
return GSS_S_FAILURE;
}
if (gss_oid_equal(desired_object, GSS_KRB5_IMPORT_CRED_X))
return import_cred(minor_status, context, cred_handle, value);
if (gss_oid_equal(desired_object, GSS_KRB5_SET_ALLOWABLE_ENCTYPES_X))
return allowed_enctypes(minor_status, context, cred_handle, value);
if (gss_oid_equal(desired_object, GSS_KRB5_CRED_NO_CI_FLAGS_X)) {
return no_ci_flags(minor_status, context, cred_handle, value);
}
*minor_status = EINVAL;
return GSS_S_FAILURE;
}
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