c734cd40a1
The requirement to specify the parent class type makes the macro harder to use and easy to misuse (silent bugs can be introduced if the wrong struct type is specified). Simplify the macro by just not declaring any class struct, allowing us to remove the class_size field from the TypeInfo variables for those types. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200916182519.415636-3-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
148 lines
3.7 KiB
C
148 lines
3.7 KiB
C
/*
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* QEMU PAM authorization driver
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*
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* Copyright (c) 2018 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "qemu/osdep.h"
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#include "authz/pamacct.h"
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#include "trace.h"
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#include "qemu/module.h"
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#include "qom/object_interfaces.h"
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#include <security/pam_appl.h>
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static bool qauthz_pam_is_allowed(QAuthZ *authz,
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const char *identity,
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Error **errp)
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{
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QAuthZPAM *pauthz = QAUTHZ_PAM(authz);
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const struct pam_conv pam_conversation = { 0 };
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pam_handle_t *pamh = NULL;
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int ret;
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trace_qauthz_pam_check(authz, identity, pauthz->service);
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ret = pam_start(pauthz->service,
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identity,
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&pam_conversation,
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&pamh);
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if (ret != PAM_SUCCESS) {
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error_setg(errp, "Unable to start PAM transaction: %s",
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pam_strerror(NULL, ret));
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return false;
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}
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ret = pam_acct_mgmt(pamh, PAM_SILENT);
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pam_end(pamh, ret);
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if (ret != PAM_SUCCESS) {
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error_setg(errp, "Unable to authorize user '%s': %s",
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identity, pam_strerror(pamh, ret));
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return false;
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}
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return true;
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}
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static void
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qauthz_pam_prop_set_service(Object *obj,
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const char *service,
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Error **errp G_GNUC_UNUSED)
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{
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QAuthZPAM *pauthz = QAUTHZ_PAM(obj);
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g_free(pauthz->service);
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pauthz->service = g_strdup(service);
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}
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static char *
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qauthz_pam_prop_get_service(Object *obj,
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Error **errp G_GNUC_UNUSED)
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{
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QAuthZPAM *pauthz = QAUTHZ_PAM(obj);
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return g_strdup(pauthz->service);
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}
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static void
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qauthz_pam_complete(UserCreatable *uc, Error **errp)
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{
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}
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static void
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qauthz_pam_finalize(Object *obj)
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{
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QAuthZPAM *pauthz = QAUTHZ_PAM(obj);
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g_free(pauthz->service);
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}
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static void
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qauthz_pam_class_init(ObjectClass *oc, void *data)
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{
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UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
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QAuthZClass *authz = QAUTHZ_CLASS(oc);
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ucc->complete = qauthz_pam_complete;
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authz->is_allowed = qauthz_pam_is_allowed;
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object_class_property_add_str(oc, "service",
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qauthz_pam_prop_get_service,
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qauthz_pam_prop_set_service);
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}
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QAuthZPAM *qauthz_pam_new(const char *id,
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const char *service,
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Error **errp)
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{
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return QAUTHZ_PAM(
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object_new_with_props(TYPE_QAUTHZ_PAM,
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object_get_objects_root(),
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id, errp,
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"service", service,
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NULL));
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}
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static const TypeInfo qauthz_pam_info = {
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.parent = TYPE_QAUTHZ,
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.name = TYPE_QAUTHZ_PAM,
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.instance_size = sizeof(QAuthZPAM),
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.instance_finalize = qauthz_pam_finalize,
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.class_init = qauthz_pam_class_init,
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.interfaces = (InterfaceInfo[]) {
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{ TYPE_USER_CREATABLE },
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{ }
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}
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};
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static void
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qauthz_pam_register_types(void)
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{
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type_register_static(&qauthz_pam_info);
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}
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type_init(qauthz_pam_register_types);
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