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