authz/simple.c

   1 /*
   2  * QEMU simple authorization driver
   3  *
   4  * Copyright (c) 2018 Red Hat, Inc.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  *
  19  */
  20
  21 #include "qemu/osdep.h"
  22 #include "authz/simple.h"
  23 #include "trace.h"
  24 #include "qemu/module.h"
  25 #include "qom/object_interfaces.h"
  26
  27 static bool qauthz_simple_is_allowed(QAuthZ *authz,
  28                                      const char *identity,
  29                                      Error **errp)
  30 {
  31     QAuthZSimple *sauthz = QAUTHZ_SIMPLE(authz);
  32
  33     trace_qauthz_simple_is_allowed(authz, sauthz->identity, identity);
  34     return g_str_equal(identity, sauthz->identity);
  35 }
  36
  37 static void
  38 qauthz_simple_prop_set_identity(Object *obj,
  39                                 const char *value,
  40                                 Error **errp G_GNUC_UNUSED)
  41 {
  42     QAuthZSimple *sauthz = QAUTHZ_SIMPLE(obj);
  43
  44     g_free(sauthz->identity);
  45     sauthz->identity = g_strdup(value);
  46 }
  47
  48
  49 static char *
  50 qauthz_simple_prop_get_identity(Object *obj,
  51                                 Error **errp G_GNUC_UNUSED)
  52 {
  53     QAuthZSimple *sauthz = QAUTHZ_SIMPLE(obj);
  54
  55     return g_strdup(sauthz->identity);
  56 }
  57
  58
  59 static void
  60 qauthz_simple_finalize(Object *obj)
  61 {
  62     QAuthZSimple *sauthz = QAUTHZ_SIMPLE(obj);
  63
  64     g_free(sauthz->identity);
  65 }
  66
  67
  68 static void
  69 qauthz_simple_complete(UserCreatable *uc, Error **errp)
  70 {
  71     QAuthZSimple *sauthz = QAUTHZ_SIMPLE(uc);
  72
  73     if (!sauthz->identity) {
  74         error_setg(errp, "The 'identity' property must be set");
  75         return;
  76     }
  77 }
  78
  79
  80 static void
  81 qauthz_simple_class_init(ObjectClass *oc, void *data)
  82 {
  83     QAuthZClass *authz = QAUTHZ_CLASS(oc);
  84     UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
  85
  86     ucc->complete = qauthz_simple_complete;
  87     authz->is_allowed = qauthz_simple_is_allowed;
  88
  89     object_class_property_add_str(oc, "identity",
  90                                   qauthz_simple_prop_get_identity,
  91                                   qauthz_simple_prop_set_identity);
  92 }
  93
  94
  95 QAuthZSimple *qauthz_simple_new(const char *id,
  96                                 const char *identity,
  97                                 Error **errp)
  98 {
  99     return QAUTHZ_SIMPLE(
 100         object_new_with_props(TYPE_QAUTHZ_SIMPLE,
 101                               object_get_objects_root(),
 102                               id, errp,
 103                               "identity", identity,
 104                               NULL));
 105 }
 106
 107
 108 static const TypeInfo qauthz_simple_info = {
 109     .parent = TYPE_QAUTHZ,
 110     .name = TYPE_QAUTHZ_SIMPLE,
 111     .instance_size = sizeof(QAuthZSimple),
 112     .instance_finalize = qauthz_simple_finalize,
 113     .class_init = qauthz_simple_class_init,
 114     .interfaces = (InterfaceInfo[]) {
 115         { TYPE_USER_CREATABLE },
 116         { }
 117     }
 118 };
 119
 120
 121 static void
 122 qauthz_simple_register_types(void)
 123 {
 124     type_register_static(&qauthz_simple_info);
 125 }
 126
 127
 128 type_init(qauthz_simple_register_types);