OpenBSD-4.6/kerberosV/src/lib/gssapi/add_cred.c
/*
* Copyright (c) 2003 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("$KTH: add_cred.c,v 1.4 2003/10/07 04:08:57 lha Exp $");
OM_uint32 gss_add_cred (
OM_uint32 *minor_status,
const gss_cred_id_t input_cred_handle,
const gss_name_t desired_name,
const gss_OID desired_mech,
gss_cred_usage_t cred_usage,
OM_uint32 initiator_time_req,
OM_uint32 acceptor_time_req,
gss_cred_id_t *output_cred_handle,
gss_OID_set *actual_mechs,
OM_uint32 *initiator_time_rec,
OM_uint32 *acceptor_time_rec)
{
OM_uint32 ret, lifetime;
gss_cred_id_t cred, handle;
handle = NULL;
cred = input_cred_handle;
if (gss_oid_equal(desired_mech, GSS_KRB5_MECHANISM) == 0) {
*minor_status = 0;
return GSS_S_BAD_MECH;
}
if (cred == GSS_C_NO_CREDENTIAL && output_cred_handle == NULL) {
*minor_status = 0;
return GSS_S_NO_CRED;
}
/* check if requested output usage is compatible with output usage */
if (output_cred_handle != NULL) {
HEIMDAL_MUTEX_lock(&cred->cred_id_mutex);
if (cred->usage != cred_usage && cred->usage != GSS_C_BOTH) {
HEIMDAL_MUTEX_unlock(&cred->cred_id_mutex);
*minor_status = GSS_KRB5_S_G_BAD_USAGE;
return(GSS_S_FAILURE);
}
}
/* check that we have the same name */
if (desired_name != GSS_C_NO_NAME &&
krb5_principal_compare(gssapi_krb5_context, desired_name,
cred->principal) != FALSE) {
if (output_cred_handle)
HEIMDAL_MUTEX_unlock(&cred->cred_id_mutex);
*minor_status = 0;
return GSS_S_BAD_NAME;
}
/* make a copy */
if (output_cred_handle) {
handle = (gss_cred_id_t)malloc(sizeof(*handle));
if (handle == GSS_C_NO_CREDENTIAL) {
HEIMDAL_MUTEX_unlock(&cred->cred_id_mutex);
*minor_status = ENOMEM;
return (GSS_S_FAILURE);
}
memset(handle, 0, sizeof (*handle));
handle->usage = cred_usage;
handle->lifetime = cred->lifetime;
handle->principal = NULL;
handle->keytab = NULL;
handle->ccache = NULL;
handle->mechanisms = NULL;
HEIMDAL_MUTEX_init(&handle->cred_id_mutex);
ret = GSS_S_FAILURE;
ret = gss_duplicate_name(minor_status, cred->principal,
&handle->principal);
if (ret) {
HEIMDAL_MUTEX_unlock(&cred->cred_id_mutex);
free(handle);
*minor_status = ENOMEM;
return GSS_S_FAILURE;
}
if (cred->keytab) {
krb5_error_code kret;
char name[KRB5_KT_PREFIX_MAX_LEN + MAXPATHLEN];
int len;
ret = GSS_S_FAILURE;
kret = krb5_kt_get_type(gssapi_krb5_context, cred->keytab,
name, KRB5_KT_PREFIX_MAX_LEN);
if (kret) {
*minor_status = kret;
goto failure;
}
len = strlen(name);
name[len++] = ':';
kret = krb5_kt_get_name(gssapi_krb5_context, cred->keytab,
name + len,
sizeof(name) - len);
if (kret) {
*minor_status = kret;
goto failure;
}
kret = krb5_kt_resolve(gssapi_krb5_context, name,
&handle->keytab);
if (kret){
*minor_status = kret;
goto failure;
}
}
if (cred->ccache) {
krb5_error_code kret;
const char *type, *name;
char *type_name;
ret = GSS_S_FAILURE;
type = krb5_cc_get_type(gssapi_krb5_context, cred->ccache);
if (type == NULL){
*minor_status = ENOMEM;
goto failure;
}
if (strcmp(type, "MEMORY") == 0) {
ret = krb5_cc_gen_new(gssapi_krb5_context, &krb5_mcc_ops,
&handle->ccache);
if (ret) {
*minor_status = ret;
goto failure;
}
ret = krb5_cc_copy_cache(gssapi_krb5_context, cred->ccache,
handle->ccache);
if (ret) {
*minor_status = ret;
goto failure;
}
} else {
name = krb5_cc_get_name(gssapi_krb5_context, cred->ccache);
if (name == NULL) {
*minor_status = ENOMEM;
goto failure;
}
asprintf(&type_name, "%s:%s", type, name);
if (type_name == NULL) {
*minor_status = ENOMEM;
goto failure;
}
kret = krb5_cc_resolve(gssapi_krb5_context, type_name,
&handle->ccache);
free(type_name);
if (kret) {
*minor_status = kret;
goto failure;
}
}
}
ret = gss_create_empty_oid_set(minor_status, &handle->mechanisms);
if (ret)
goto failure;
ret = gss_add_oid_set_member(minor_status, GSS_KRB5_MECHANISM,
&handle->mechanisms);
if (ret)
goto failure;
}
ret = gss_inquire_cred(minor_status, cred, NULL, &lifetime,
NULL, actual_mechs);
if (ret)
goto failure;
if (initiator_time_rec)
*initiator_time_rec = lifetime;
if (acceptor_time_rec)
*acceptor_time_rec = lifetime;
if (output_cred_handle) {
*output_cred_handle = handle;
HEIMDAL_MUTEX_unlock(&cred->cred_id_mutex);
}
*minor_status = 0;
return ret;
failure:
if (handle) {
if (handle->principal)
gss_release_name(NULL, &handle->principal);
if (handle->keytab)
krb5_kt_close(gssapi_krb5_context, handle->keytab);
if (handle->ccache)
krb5_cc_destroy(gssapi_krb5_context, handle->ccache);
if (handle->mechanisms)
gss_release_oid_set(NULL, &handle->mechanisms);
free(handle);
}
if (output_cred_handle)
HEIMDAL_MUTEX_unlock(&cred->cred_id_mutex);
return ret;
}