bus/policy.h

   1 /* -*- mode: C; c-file-style: "gnu" -*- */
   2 /* policy.h  Bus security policy
   3  *
   4  * Copyright (C) 2003  Red Hat, Inc.
   5  *
   6  * Licensed under the Academic Free License version 2.1
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #ifndef BUS_POLICY_H
  25 #define BUS_POLICY_H
  26
  27 #include <dbus/dbus.h>
  28 #include <dbus/dbus-string.h>
  29 #include <dbus/dbus-list.h>
  30 #include <dbus/dbus-sysdeps.h>
  31 #include "bus.h"
  32
  33 typedef enum
  34 {
  35   BUS_POLICY_RULE_SEND,
  36   BUS_POLICY_RULE_RECEIVE,
  37   BUS_POLICY_RULE_OWN,
  38   BUS_POLICY_RULE_USER,
  39   BUS_POLICY_RULE_GROUP
  40 } BusPolicyRuleType;
  41
  42 /** determines whether the rule affects a connection, or some global item */
  43 #define BUS_POLICY_RULE_IS_PER_CLIENT(rule) (!((rule)->type == BUS_POLICY_RULE_USER || \
  44                                                (rule)->type == BUS_POLICY_RULE_GROUP))
  45
  46 struct BusPolicyRule
  47 {
  48   int refcount;
  49
  50   BusPolicyRuleType type;
  51
  52   unsigned int allow : 1; /**< #TRUE if this allows, #FALSE if it denies */
  53
  54   union
  55   {
  56     struct
  57     {
  58       /* message type can be DBUS_MESSAGE_TYPE_INVALID meaning "any" */
  59       int   message_type;
  60       /* any of these can be NULL meaning "any" */
  61       char *path;
  62       char *interface;
  63       char *member;
  64       char *error;
  65       char *destination;
  66       unsigned int eavesdrop : 1;
  67       unsigned int requested_reply : 1;
  68     } send;
  69
  70     struct
  71     {
  72       /* message type can be DBUS_MESSAGE_TYPE_INVALID meaning "any" */
  73       int   message_type;
  74       /* any of these can be NULL meaning "any" */
  75       char *path;
  76       char *interface;
  77       char *member;
  78       char *error;
  79       char *origin;
  80       unsigned int eavesdrop : 1;
  81       unsigned int requested_reply : 1;
  82     } receive;
  83
  84     struct
  85     {
  86       /* can be NULL meaning "any" */
  87       char *service_name;
  88     } own;
  89
  90     struct
  91     {
  92       /* can be DBUS_UID_UNSET meaning "any" */
  93       dbus_uid_t uid;
  94     } user;
  95
  96     struct
  97     {
  98       /* can be DBUS_GID_UNSET meaning "any" */
  99       dbus_gid_t gid;
 100     } group;
 101
 102   } d;
 103 };
 104
 105 BusPolicyRule* bus_policy_rule_new   (BusPolicyRuleType type,
 106                                       dbus_bool_t       allow);
 107 BusPolicyRule* bus_policy_rule_ref   (BusPolicyRule    *rule);
 108 void           bus_policy_rule_unref (BusPolicyRule    *rule);
 109
 110 BusPolicy*       bus_policy_new                   (void);
 111 BusPolicy*       bus_policy_ref                   (BusPolicy        *policy);
 112 void             bus_policy_unref                 (BusPolicy        *policy);
 113 BusClientPolicy* bus_policy_create_client_policy  (BusPolicy        *policy,
 114                                                    DBusConnection   *connection,
 115                                                    DBusError        *error);
 116 dbus_bool_t      bus_policy_allow_user            (BusPolicy        *policy,
 117                                                    unsigned long     uid);
 118 dbus_bool_t      bus_policy_append_default_rule   (BusPolicy        *policy,
 119                                                    BusPolicyRule    *rule);
 120 dbus_bool_t      bus_policy_append_mandatory_rule (BusPolicy        *policy,
 121                                                    BusPolicyRule    *rule);
 122 dbus_bool_t      bus_policy_append_user_rule      (BusPolicy        *policy,
 123                                                    dbus_uid_t        uid,
 124                                                    BusPolicyRule    *rule);
 125 dbus_bool_t      bus_policy_append_group_rule     (BusPolicy        *policy,
 126                                                    dbus_gid_t        gid,
 127                                                    BusPolicyRule    *rule);
 128 dbus_bool_t      bus_policy_append_console_rule   (BusPolicy        *policy,
 129                                                    dbus_bool_t        at_console,
 130                                                    BusPolicyRule    *rule);
 131
 132 dbus_bool_t      bus_policy_merge                 (BusPolicy        *policy,
 133                                                    BusPolicy        *to_absorb);
 134
 135 BusClientPolicy* bus_client_policy_new               (void);
 136 BusClientPolicy* bus_client_policy_ref               (BusClientPolicy  *policy);
 137 void             bus_client_policy_unref             (BusClientPolicy  *policy);
 138 dbus_bool_t      bus_client_policy_check_can_send    (BusClientPolicy  *policy,
 139                                                       BusRegistry      *registry,
 140                                                       dbus_bool_t       requested_reply,
 141                                                       DBusConnection   *receiver,
 142                                                       DBusMessage      *message);
 143 dbus_bool_t      bus_client_policy_check_can_receive (BusClientPolicy  *policy,
 144                                                       BusRegistry      *registry,
 145                                                       dbus_bool_t       requested_reply,
 146                                                       DBusConnection   *sender,
 147                                                       DBusConnection   *addressed_recipient,
 148                                                       DBusConnection   *proposed_recipient,
 149                                                       DBusMessage      *message);
 150 dbus_bool_t      bus_client_policy_check_can_own     (BusClientPolicy  *policy,
 151                                                       DBusConnection   *connection,
 152                                                       const DBusString *service_name);
 153 dbus_bool_t      bus_client_policy_append_rule       (BusClientPolicy  *policy,
 154                                                       BusPolicyRule    *rule);
 155 void             bus_client_policy_optimize          (BusClientPolicy  *policy);
 156
 157
 158 #endif /* BUS_POLICY_H */