There is no "version 2" of the "Lesser" General Public License. It is either "GPL version 2.0" or "Lesser GPL version 2.1". This patch replaces all occurrences of "Lesser GPL version 2" with "Lesser GPL version 2.1" in comment section. Signed-off-by: Chetan Pant <chetan4windows@gmail.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
287 lines
7.3 KiB
C
287 lines
7.3 KiB
C
/*
|
|
* QEMU access control list file 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 2.1 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/listfile.h"
|
|
#include "trace.h"
|
|
#include "qemu/error-report.h"
|
|
#include "qemu/main-loop.h"
|
|
#include "qemu/module.h"
|
|
#include "qemu/sockets.h"
|
|
#include "qemu/filemonitor.h"
|
|
#include "qom/object_interfaces.h"
|
|
#include "qapi/qapi-visit-authz.h"
|
|
#include "qapi/qmp/qjson.h"
|
|
#include "qapi/qmp/qobject.h"
|
|
#include "qapi/qmp/qerror.h"
|
|
#include "qapi/qobject-input-visitor.h"
|
|
|
|
|
|
static bool
|
|
qauthz_list_file_is_allowed(QAuthZ *authz,
|
|
const char *identity,
|
|
Error **errp)
|
|
{
|
|
QAuthZListFile *fauthz = QAUTHZ_LIST_FILE(authz);
|
|
if (fauthz->list) {
|
|
return qauthz_is_allowed(fauthz->list, identity, errp);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
static QAuthZ *
|
|
qauthz_list_file_load(QAuthZListFile *fauthz, Error **errp)
|
|
{
|
|
GError *err = NULL;
|
|
gchar *content = NULL;
|
|
gsize len;
|
|
QObject *obj = NULL;
|
|
QDict *pdict;
|
|
Visitor *v = NULL;
|
|
QAuthZ *ret = NULL;
|
|
|
|
trace_qauthz_list_file_load(fauthz, fauthz->filename);
|
|
if (!g_file_get_contents(fauthz->filename, &content, &len, &err)) {
|
|
error_setg(errp, "Unable to read '%s': %s",
|
|
fauthz->filename, err->message);
|
|
goto cleanup;
|
|
}
|
|
|
|
obj = qobject_from_json(content, errp);
|
|
if (!obj) {
|
|
goto cleanup;
|
|
}
|
|
|
|
pdict = qobject_to(QDict, obj);
|
|
if (!pdict) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "obj", "dict");
|
|
goto cleanup;
|
|
}
|
|
|
|
v = qobject_input_visitor_new(obj);
|
|
|
|
ret = (QAuthZ *)user_creatable_add_type(TYPE_QAUTHZ_LIST,
|
|
NULL, pdict, v, errp);
|
|
|
|
cleanup:
|
|
visit_free(v);
|
|
qobject_unref(obj);
|
|
if (err) {
|
|
g_error_free(err);
|
|
}
|
|
g_free(content);
|
|
return ret;
|
|
}
|
|
|
|
|
|
static void
|
|
qauthz_list_file_event(int64_t wd G_GNUC_UNUSED,
|
|
QFileMonitorEvent ev G_GNUC_UNUSED,
|
|
const char *name G_GNUC_UNUSED,
|
|
void *opaque)
|
|
{
|
|
QAuthZListFile *fauthz = opaque;
|
|
Error *err = NULL;
|
|
|
|
if (ev != QFILE_MONITOR_EVENT_MODIFIED &&
|
|
ev != QFILE_MONITOR_EVENT_CREATED) {
|
|
return;
|
|
}
|
|
|
|
object_unref(OBJECT(fauthz->list));
|
|
fauthz->list = qauthz_list_file_load(fauthz, &err);
|
|
trace_qauthz_list_file_refresh(fauthz,
|
|
fauthz->filename, fauthz->list ? 1 : 0);
|
|
if (!fauthz->list) {
|
|
error_report_err(err);
|
|
}
|
|
}
|
|
|
|
static void
|
|
qauthz_list_file_complete(UserCreatable *uc, Error **errp)
|
|
{
|
|
QAuthZListFile *fauthz = QAUTHZ_LIST_FILE(uc);
|
|
gchar *dir = NULL, *file = NULL;
|
|
|
|
if (!fauthz->filename) {
|
|
error_setg(errp, "filename not provided");
|
|
return;
|
|
}
|
|
|
|
fauthz->list = qauthz_list_file_load(fauthz, errp);
|
|
|
|
if (!fauthz->refresh) {
|
|
return;
|
|
}
|
|
|
|
fauthz->file_monitor = qemu_file_monitor_new(errp);
|
|
if (!fauthz->file_monitor) {
|
|
return;
|
|
}
|
|
|
|
dir = g_path_get_dirname(fauthz->filename);
|
|
if (g_str_equal(dir, ".")) {
|
|
error_setg(errp, "Filename must be an absolute path");
|
|
goto cleanup;
|
|
}
|
|
file = g_path_get_basename(fauthz->filename);
|
|
if (g_str_equal(file, ".")) {
|
|
error_setg(errp, "Path has no trailing filename component");
|
|
goto cleanup;
|
|
}
|
|
|
|
fauthz->file_watch = qemu_file_monitor_add_watch(
|
|
fauthz->file_monitor, dir, file,
|
|
qauthz_list_file_event, fauthz, errp);
|
|
if (fauthz->file_watch < 0) {
|
|
goto cleanup;
|
|
}
|
|
|
|
cleanup:
|
|
g_free(file);
|
|
g_free(dir);
|
|
}
|
|
|
|
|
|
static void
|
|
qauthz_list_file_prop_set_filename(Object *obj,
|
|
const char *value,
|
|
Error **errp G_GNUC_UNUSED)
|
|
{
|
|
QAuthZListFile *fauthz = QAUTHZ_LIST_FILE(obj);
|
|
|
|
g_free(fauthz->filename);
|
|
fauthz->filename = g_strdup(value);
|
|
}
|
|
|
|
|
|
static char *
|
|
qauthz_list_file_prop_get_filename(Object *obj,
|
|
Error **errp G_GNUC_UNUSED)
|
|
{
|
|
QAuthZListFile *fauthz = QAUTHZ_LIST_FILE(obj);
|
|
|
|
return g_strdup(fauthz->filename);
|
|
}
|
|
|
|
|
|
static void
|
|
qauthz_list_file_prop_set_refresh(Object *obj,
|
|
bool value,
|
|
Error **errp G_GNUC_UNUSED)
|
|
{
|
|
QAuthZListFile *fauthz = QAUTHZ_LIST_FILE(obj);
|
|
|
|
fauthz->refresh = value;
|
|
}
|
|
|
|
|
|
static bool
|
|
qauthz_list_file_prop_get_refresh(Object *obj,
|
|
Error **errp G_GNUC_UNUSED)
|
|
{
|
|
QAuthZListFile *fauthz = QAUTHZ_LIST_FILE(obj);
|
|
|
|
return fauthz->refresh;
|
|
}
|
|
|
|
|
|
static void
|
|
qauthz_list_file_finalize(Object *obj)
|
|
{
|
|
QAuthZListFile *fauthz = QAUTHZ_LIST_FILE(obj);
|
|
|
|
object_unref(OBJECT(fauthz->list));
|
|
g_free(fauthz->filename);
|
|
qemu_file_monitor_free(fauthz->file_monitor);
|
|
}
|
|
|
|
|
|
static void
|
|
qauthz_list_file_class_init(ObjectClass *oc, void *data)
|
|
{
|
|
UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
|
|
QAuthZClass *authz = QAUTHZ_CLASS(oc);
|
|
|
|
ucc->complete = qauthz_list_file_complete;
|
|
|
|
object_class_property_add_str(oc, "filename",
|
|
qauthz_list_file_prop_get_filename,
|
|
qauthz_list_file_prop_set_filename);
|
|
object_class_property_add_bool(oc, "refresh",
|
|
qauthz_list_file_prop_get_refresh,
|
|
qauthz_list_file_prop_set_refresh);
|
|
|
|
authz->is_allowed = qauthz_list_file_is_allowed;
|
|
}
|
|
|
|
|
|
static void
|
|
qauthz_list_file_init(Object *obj)
|
|
{
|
|
QAuthZListFile *authz = QAUTHZ_LIST_FILE(obj);
|
|
|
|
authz->file_watch = -1;
|
|
#ifdef CONFIG_INOTIFY1
|
|
authz->refresh = true;
|
|
#endif
|
|
}
|
|
|
|
|
|
QAuthZListFile *qauthz_list_file_new(const char *id,
|
|
const char *filename,
|
|
bool refresh,
|
|
Error **errp)
|
|
{
|
|
return QAUTHZ_LIST_FILE(
|
|
object_new_with_props(TYPE_QAUTHZ_LIST_FILE,
|
|
object_get_objects_root(),
|
|
id, errp,
|
|
"filename", filename,
|
|
"refresh", refresh ? "yes" : "no",
|
|
NULL));
|
|
}
|
|
|
|
|
|
static const TypeInfo qauthz_list_file_info = {
|
|
.parent = TYPE_QAUTHZ,
|
|
.name = TYPE_QAUTHZ_LIST_FILE,
|
|
.instance_init = qauthz_list_file_init,
|
|
.instance_size = sizeof(QAuthZListFile),
|
|
.instance_finalize = qauthz_list_file_finalize,
|
|
.class_init = qauthz_list_file_class_init,
|
|
.interfaces = (InterfaceInfo[]) {
|
|
{ TYPE_USER_CREATABLE },
|
|
{ }
|
|
}
|
|
};
|
|
|
|
|
|
static void
|
|
qauthz_list_file_register_types(void)
|
|
{
|
|
type_register_static(&qauthz_list_file_info);
|
|
}
|
|
|
|
|
|
type_init(qauthz_list_file_register_types);
|