mirror of https://gitee.com/openkylin/qemu.git
149 lines
3.7 KiB
C
149 lines
3.7 KiB
C
/*
|
|
* QEMU PAM authorization driver
|
|
*
|
|
* Copyright (c) 2018 Red Hat, Inc.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "authz/pamacct.h"
|
|
#include "trace.h"
|
|
#include "qemu/module.h"
|
|
#include "qom/object_interfaces.h"
|
|
|
|
#include <security/pam_appl.h>
|
|
|
|
|
|
static bool qauthz_pam_is_allowed(QAuthZ *authz,
|
|
const char *identity,
|
|
Error **errp)
|
|
{
|
|
QAuthZPAM *pauthz = QAUTHZ_PAM(authz);
|
|
const struct pam_conv pam_conversation = { 0 };
|
|
pam_handle_t *pamh = NULL;
|
|
int ret;
|
|
|
|
trace_qauthz_pam_check(authz, identity, pauthz->service);
|
|
ret = pam_start(pauthz->service,
|
|
identity,
|
|
&pam_conversation,
|
|
&pamh);
|
|
if (ret != PAM_SUCCESS) {
|
|
error_setg(errp, "Unable to start PAM transaction: %s",
|
|
pam_strerror(NULL, ret));
|
|
return false;
|
|
}
|
|
|
|
ret = pam_acct_mgmt(pamh, PAM_SILENT);
|
|
pam_end(pamh, ret);
|
|
if (ret != PAM_SUCCESS) {
|
|
error_setg(errp, "Unable to authorize user '%s': %s",
|
|
identity, pam_strerror(pamh, ret));
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
static void
|
|
qauthz_pam_prop_set_service(Object *obj,
|
|
const char *service,
|
|
Error **errp G_GNUC_UNUSED)
|
|
{
|
|
QAuthZPAM *pauthz = QAUTHZ_PAM(obj);
|
|
|
|
g_free(pauthz->service);
|
|
pauthz->service = g_strdup(service);
|
|
}
|
|
|
|
|
|
static char *
|
|
qauthz_pam_prop_get_service(Object *obj,
|
|
Error **errp G_GNUC_UNUSED)
|
|
{
|
|
QAuthZPAM *pauthz = QAUTHZ_PAM(obj);
|
|
|
|
return g_strdup(pauthz->service);
|
|
}
|
|
|
|
|
|
static void
|
|
qauthz_pam_complete(UserCreatable *uc, Error **errp)
|
|
{
|
|
}
|
|
|
|
|
|
static void
|
|
qauthz_pam_finalize(Object *obj)
|
|
{
|
|
QAuthZPAM *pauthz = QAUTHZ_PAM(obj);
|
|
|
|
g_free(pauthz->service);
|
|
}
|
|
|
|
|
|
static void
|
|
qauthz_pam_class_init(ObjectClass *oc, void *data)
|
|
{
|
|
UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
|
|
QAuthZClass *authz = QAUTHZ_CLASS(oc);
|
|
|
|
ucc->complete = qauthz_pam_complete;
|
|
authz->is_allowed = qauthz_pam_is_allowed;
|
|
|
|
object_class_property_add_str(oc, "service",
|
|
qauthz_pam_prop_get_service,
|
|
qauthz_pam_prop_set_service);
|
|
}
|
|
|
|
|
|
QAuthZPAM *qauthz_pam_new(const char *id,
|
|
const char *service,
|
|
Error **errp)
|
|
{
|
|
return QAUTHZ_PAM(
|
|
object_new_with_props(TYPE_QAUTHZ_PAM,
|
|
object_get_objects_root(),
|
|
id, errp,
|
|
"service", service,
|
|
NULL));
|
|
}
|
|
|
|
|
|
static const TypeInfo qauthz_pam_info = {
|
|
.parent = TYPE_QAUTHZ,
|
|
.name = TYPE_QAUTHZ_PAM,
|
|
.instance_size = sizeof(QAuthZPAM),
|
|
.instance_finalize = qauthz_pam_finalize,
|
|
.class_size = sizeof(QAuthZPAMClass),
|
|
.class_init = qauthz_pam_class_init,
|
|
.interfaces = (InterfaceInfo[]) {
|
|
{ TYPE_USER_CREATABLE },
|
|
{ }
|
|
}
|
|
};
|
|
|
|
|
|
static void
|
|
qauthz_pam_register_types(void)
|
|
{
|
|
type_register_static(&qauthz_pam_info);
|
|
}
|
|
|
|
|
|
type_init(qauthz_pam_register_types);
|