wpa_supplicant/dbus/dbus_new_helpers.h

   1 /*
   2  * WPA Supplicant / dbus-based control interface
   3  * Copyright (c) 2006, Dan Williams <dcbw@redhat.com> and Red Hat, Inc.
   4  * Copyright (c) 2009, Witold Sowa <witold.sowa@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * Alternatively, this software may be distributed under the terms of BSD
  11  * license.
  12  *
  13  * See README and COPYING for more details.
  14  */
  15
  16 #ifndef WPA_DBUS_CTRL_H
  17 #define WPA_DBUS_CTRL_H
  18
  19 #include <dbus/dbus.h>
  20
  21 typedef DBusMessage * (* WPADBusMethodHandler)(DBusMessage *message,
  22                                                void *user_data);
  23 typedef void (* WPADBusArgumentFreeFunction)(void *handler_arg);
  24
  25 typedef DBusMessage * (* WPADBusPropertyAccessor)(DBusMessage *message,
  26                                                   const void *user_data);
  27
  28 struct wpa_dbus_object_desc {
  29         DBusConnection *connection;
  30
  31         /* list of methods, properties and signals registered with object */
  32         const struct wpa_dbus_method_desc *methods;
  33         const struct wpa_dbus_signal_desc *signals;
  34         const struct wpa_dbus_property_desc *properties;
  35
  36         /* argument for method handlers and properties
  37          * getter and setter functions */
  38         void *user_data;
  39         /* function used to free above argument */
  40         WPADBusArgumentFreeFunction user_data_free_func;
  41 };
  42
  43 enum dbus_prop_access { R, W, RW };
  44
  45 enum dbus_arg_direction { ARG_IN, ARG_OUT };
  46
  47 struct wpa_dbus_argument {
  48         char *name;
  49         char *type;
  50         enum dbus_arg_direction dir;
  51 };
  52
  53 #define END_ARGS { NULL, NULL, ARG_IN }
  54
  55 /**
  56  * struct wpa_dbus_method_desc - DBus method description
  57  */
  58 struct wpa_dbus_method_desc {
  59         /* method name */
  60         const char *dbus_method;
  61         /* method interface */
  62         const char *dbus_interface;
  63         /* method handling function */
  64         WPADBusMethodHandler method_handler;
  65         /* array of arguments */
  66         struct wpa_dbus_argument args[3];
  67 };
  68
  69 /**
  70  * struct wpa_dbus_signal_desc - DBus signal description
  71  */
  72 struct wpa_dbus_signal_desc {
  73         /* signal name */
  74         const char *dbus_signal;
  75         /* signal interface */
  76         const char *dbus_interface;
  77         /* array of arguments */
  78         struct wpa_dbus_argument args[3];
  79 };
  80
  81 /**
  82  * struct wpa_dbus_property_desc - DBus property description
  83  */
  84 struct wpa_dbus_property_desc {
  85         /* property name */
  86         const char *dbus_property;
  87         /* property interface */
  88         const char *dbus_interface;
  89         /* property type signature in DBus type notation */
  90         const char *type;
  91         /* property getter function */
  92         WPADBusPropertyAccessor getter;
  93         /* property setter function */
  94         WPADBusPropertyAccessor setter;
  95         /* property access permissions */
  96         enum dbus_prop_access access;
  97 };
  98
  99
 100 #define WPAS_DBUS_OBJECT_PATH_MAX 150
 101 #define WPAS_DBUS_INTERFACE_MAX 150
 102 #define WPAS_DBUS_METHOD_SIGNAL_PROP_MAX 50
 103
 104 #define WPA_DBUS_INTROSPECTION_INTERFACE "org.freedesktop.DBus.Introspectable"
 105 #define WPA_DBUS_INTROSPECTION_METHOD "Introspect"
 106 #define WPA_DBUS_PROPERTIES_INTERFACE "org.freedesktop.DBus.Properties"
 107 #define WPA_DBUS_PROPERTIES_GET "Get"
 108 #define WPA_DBUS_PROPERTIES_SET "Set"
 109 #define WPA_DBUS_PROPERTIES_GETALL "GetAll"
 110
 111 void free_dbus_object_desc(struct wpa_dbus_object_desc *obj_dsc);
 112
 113 int wpa_dbus_ctrl_iface_init(struct wpas_dbus_priv *iface, char *dbus_path,
 114                              char *dbus_service,
 115                              struct wpa_dbus_object_desc *obj_desc);
 116
 117 int wpa_dbus_register_object_per_iface(
 118         struct wpas_dbus_priv *ctrl_iface,
 119         const char *path, const char *ifname,
 120         struct wpa_dbus_object_desc *obj_desc);
 121
 122 int wpa_dbus_unregister_object_per_iface(
 123         struct wpas_dbus_priv *ctrl_iface,
 124         const char *path);
 125
 126 void wpa_dbus_signal_property_changed(struct wpas_dbus_priv *iface,
 127                                       WPADBusPropertyAccessor property_getter,
 128                                       void *getter_arg,
 129                                       const char *path,
 130                                       const char *interface_name,
 131                                       const char *property_name);
 132
 133 void wpa_dbus_get_object_properties(struct wpas_dbus_priv *iface,
 134                                     const char *path, const char *interface,
 135                                     DBusMessageIter *dict_iter);
 136
 137 DBusMessage * wpa_dbus_introspect(DBusMessage *message,
 138                                   struct wpa_dbus_object_desc *obj_dsc);
 139
 140 #endif /* WPA_DBUS_CTRL_H */