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https://git.kernel.org/pub/scm/bluetooth/bluez.git
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ceed85b779
data->conn and data->path must be destroyed before freeing "data".
1825 lines
44 KiB
C
1825 lines
44 KiB
C
/*
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*
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* D-Bus helper library
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*
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* Copyright (C) 2004-2011 Marcel Holtmann <marcel@holtmann.org>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <glib.h>
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#include <dbus/dbus.h>
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#include "gdbus.h"
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#define info(fmt...)
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#define error(fmt...)
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#define debug(fmt...)
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#define DBUS_INTERFACE_OBJECT_MANAGER "org.freedesktop.DBus.ObjectManager"
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#ifndef DBUS_ERROR_UNKNOWN_PROPERTY
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#define DBUS_ERROR_UNKNOWN_PROPERTY "org.freedesktop.DBus.Error.UnknownProperty"
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#endif
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#ifndef DBUS_ERROR_PROPERTY_READ_ONLY
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#define DBUS_ERROR_PROPERTY_READ_ONLY "org.freedesktop.DBus.Error.PropertyReadOnly"
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#endif
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struct generic_data {
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unsigned int refcount;
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DBusConnection *conn;
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char *path;
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GSList *interfaces;
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GSList *objects;
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GSList *added;
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GSList *removed;
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guint process_id;
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gboolean pending_prop;
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char *introspect;
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struct generic_data *parent;
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};
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struct interface_data {
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char *name;
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const GDBusMethodTable *methods;
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const GDBusSignalTable *signals;
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const GDBusPropertyTable *properties;
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GSList *pending_prop;
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void *user_data;
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GDBusDestroyFunction destroy;
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};
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struct security_data {
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GDBusPendingReply pending;
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DBusMessage *message;
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const GDBusMethodTable *method;
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void *iface_user_data;
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};
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struct property_data {
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DBusConnection *conn;
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GDBusPendingPropertySet id;
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DBusMessage *message;
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};
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static int global_flags = 0;
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static struct generic_data *root;
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static GSList *pending = NULL;
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static gboolean process_changes(gpointer user_data);
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static void process_properties_from_interface(struct generic_data *data,
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struct interface_data *iface);
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static void process_property_changes(struct generic_data *data);
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static void print_arguments(GString *gstr, const GDBusArgInfo *args,
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const char *direction)
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{
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for (; args && args->name; args++) {
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g_string_append_printf(gstr,
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"<arg name=\"%s\" type=\"%s\"",
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args->name, args->signature);
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if (direction)
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g_string_append_printf(gstr,
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" direction=\"%s\"/>\n", direction);
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else
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g_string_append_printf(gstr, "/>\n");
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}
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}
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#define G_DBUS_ANNOTATE(name_, value_) \
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"<annotation name=\"org.freedesktop.DBus." name_ "\" " \
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"value=\"" value_ "\"/>"
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#define G_DBUS_ANNOTATE_DEPRECATED \
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G_DBUS_ANNOTATE("Deprecated", "true")
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#define G_DBUS_ANNOTATE_NOREPLY \
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G_DBUS_ANNOTATE("Method.NoReply", "true")
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static gboolean check_experimental(int flags, int flag)
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{
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if (!(flags & flag))
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return FALSE;
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return !(global_flags & G_DBUS_FLAG_ENABLE_EXPERIMENTAL);
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}
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static void generate_interface_xml(GString *gstr, struct interface_data *iface)
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{
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const GDBusMethodTable *method;
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const GDBusSignalTable *signal;
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const GDBusPropertyTable *property;
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for (method = iface->methods; method && method->name; method++) {
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if (check_experimental(method->flags,
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G_DBUS_METHOD_FLAG_EXPERIMENTAL))
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continue;
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g_string_append_printf(gstr, "<method name=\"%s\">",
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method->name);
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print_arguments(gstr, method->in_args, "in");
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print_arguments(gstr, method->out_args, "out");
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if (method->flags & G_DBUS_METHOD_FLAG_DEPRECATED)
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g_string_append_printf(gstr,
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G_DBUS_ANNOTATE_DEPRECATED);
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if (method->flags & G_DBUS_METHOD_FLAG_NOREPLY)
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g_string_append_printf(gstr, G_DBUS_ANNOTATE_NOREPLY);
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g_string_append_printf(gstr, "</method>");
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}
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for (signal = iface->signals; signal && signal->name; signal++) {
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if (check_experimental(signal->flags,
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G_DBUS_SIGNAL_FLAG_EXPERIMENTAL))
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continue;
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g_string_append_printf(gstr, "<signal name=\"%s\">",
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signal->name);
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print_arguments(gstr, signal->args, NULL);
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if (signal->flags & G_DBUS_SIGNAL_FLAG_DEPRECATED)
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g_string_append_printf(gstr,
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G_DBUS_ANNOTATE_DEPRECATED);
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g_string_append_printf(gstr, "</signal>\n");
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}
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for (property = iface->properties; property && property->name;
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property++) {
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if (check_experimental(property->flags,
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G_DBUS_PROPERTY_FLAG_EXPERIMENTAL))
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continue;
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g_string_append_printf(gstr, "<property name=\"%s\""
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" type=\"%s\" access=\"%s%s\">",
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property->name, property->type,
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property->get ? "read" : "",
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property->set ? "write" : "");
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if (property->flags & G_DBUS_PROPERTY_FLAG_DEPRECATED)
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g_string_append_printf(gstr,
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G_DBUS_ANNOTATE_DEPRECATED);
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g_string_append_printf(gstr, "</property>");
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}
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}
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static void generate_introspection_xml(DBusConnection *conn,
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struct generic_data *data, const char *path)
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{
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GSList *list;
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GString *gstr;
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char **children;
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int i;
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g_free(data->introspect);
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gstr = g_string_new(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE);
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g_string_append_printf(gstr, "<node>");
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for (list = data->interfaces; list; list = list->next) {
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struct interface_data *iface = list->data;
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g_string_append_printf(gstr, "<interface name=\"%s\">",
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iface->name);
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generate_interface_xml(gstr, iface);
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g_string_append_printf(gstr, "</interface>");
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}
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if (!dbus_connection_list_registered(conn, path, &children))
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goto done;
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for (i = 0; children[i]; i++)
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g_string_append_printf(gstr, "<node name=\"%s\"/>",
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children[i]);
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dbus_free_string_array(children);
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done:
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g_string_append_printf(gstr, "</node>");
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data->introspect = g_string_free(gstr, FALSE);
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}
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static DBusMessage *introspect(DBusConnection *connection,
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DBusMessage *message, void *user_data)
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{
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struct generic_data *data = user_data;
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DBusMessage *reply;
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if (data->introspect == NULL)
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generate_introspection_xml(connection, data,
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dbus_message_get_path(message));
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reply = dbus_message_new_method_return(message);
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if (reply == NULL)
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return NULL;
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dbus_message_append_args(reply, DBUS_TYPE_STRING, &data->introspect,
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DBUS_TYPE_INVALID);
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return reply;
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}
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static DBusHandlerResult process_message(DBusConnection *connection,
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DBusMessage *message, const GDBusMethodTable *method,
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void *iface_user_data)
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{
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DBusMessage *reply;
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reply = method->function(connection, message, iface_user_data);
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if (method->flags & G_DBUS_METHOD_FLAG_NOREPLY) {
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if (reply != NULL)
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dbus_message_unref(reply);
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return DBUS_HANDLER_RESULT_HANDLED;
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}
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if (method->flags & G_DBUS_METHOD_FLAG_ASYNC) {
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if (reply == NULL)
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return DBUS_HANDLER_RESULT_HANDLED;
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}
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if (reply == NULL)
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return DBUS_HANDLER_RESULT_NEED_MEMORY;
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g_dbus_send_message(connection, reply);
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return DBUS_HANDLER_RESULT_HANDLED;
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}
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static GDBusPendingReply next_pending = 1;
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static GSList *pending_security = NULL;
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static const GDBusSecurityTable *security_table = NULL;
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void g_dbus_pending_success(DBusConnection *connection,
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GDBusPendingReply pending)
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{
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GSList *list;
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for (list = pending_security; list; list = list->next) {
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struct security_data *secdata = list->data;
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if (secdata->pending != pending)
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continue;
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pending_security = g_slist_remove(pending_security, secdata);
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process_message(connection, secdata->message,
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secdata->method, secdata->iface_user_data);
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dbus_message_unref(secdata->message);
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g_free(secdata);
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return;
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}
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}
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void g_dbus_pending_error_valist(DBusConnection *connection,
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GDBusPendingReply pending, const char *name,
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const char *format, va_list args)
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{
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GSList *list;
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for (list = pending_security; list; list = list->next) {
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struct security_data *secdata = list->data;
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if (secdata->pending != pending)
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continue;
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pending_security = g_slist_remove(pending_security, secdata);
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g_dbus_send_error_valist(connection, secdata->message,
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name, format, args);
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dbus_message_unref(secdata->message);
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g_free(secdata);
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return;
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}
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}
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void g_dbus_pending_error(DBusConnection *connection,
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GDBusPendingReply pending,
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const char *name, const char *format, ...)
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{
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va_list args;
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va_start(args, format);
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g_dbus_pending_error_valist(connection, pending, name, format, args);
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va_end(args);
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}
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int polkit_check_authorization(DBusConnection *conn,
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const char *action, gboolean interaction,
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void (*function) (dbus_bool_t authorized,
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void *user_data),
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void *user_data, int timeout);
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struct builtin_security_data {
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DBusConnection *conn;
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GDBusPendingReply pending;
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};
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static void builtin_security_result(dbus_bool_t authorized, void *user_data)
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{
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struct builtin_security_data *data = user_data;
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if (authorized == TRUE)
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g_dbus_pending_success(data->conn, data->pending);
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else
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g_dbus_pending_error(data->conn, data->pending,
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DBUS_ERROR_AUTH_FAILED, NULL);
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g_free(data);
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}
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static void builtin_security_function(DBusConnection *conn,
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const char *action,
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gboolean interaction,
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GDBusPendingReply pending)
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{
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struct builtin_security_data *data;
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data = g_new0(struct builtin_security_data, 1);
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data->conn = conn;
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data->pending = pending;
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if (polkit_check_authorization(conn, action, interaction,
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builtin_security_result, data, 30000) < 0)
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g_dbus_pending_error(conn, pending, NULL, NULL);
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}
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static gboolean check_privilege(DBusConnection *conn, DBusMessage *msg,
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const GDBusMethodTable *method, void *iface_user_data)
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{
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const GDBusSecurityTable *security;
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for (security = security_table; security && security->privilege;
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security++) {
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struct security_data *secdata;
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gboolean interaction;
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if (security->privilege != method->privilege)
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continue;
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secdata = g_new(struct security_data, 1);
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secdata->pending = next_pending++;
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secdata->message = dbus_message_ref(msg);
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secdata->method = method;
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secdata->iface_user_data = iface_user_data;
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pending_security = g_slist_prepend(pending_security, secdata);
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if (security->flags & G_DBUS_SECURITY_FLAG_ALLOW_INTERACTION)
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interaction = TRUE;
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else
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interaction = FALSE;
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if (!(security->flags & G_DBUS_SECURITY_FLAG_BUILTIN) &&
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security->function)
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security->function(conn, security->action,
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interaction, secdata->pending);
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else
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builtin_security_function(conn, security->action,
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interaction, secdata->pending);
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return TRUE;
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}
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return FALSE;
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}
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static GDBusPendingPropertySet next_pending_property = 1;
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static GSList *pending_property_set;
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static struct property_data *remove_pending_property_data(
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GDBusPendingPropertySet id)
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{
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struct property_data *propdata;
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GSList *l;
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for (l = pending_property_set; l != NULL; l = l->next) {
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propdata = l->data;
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if (propdata->id != id)
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continue;
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break;
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}
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if (l == NULL)
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return NULL;
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pending_property_set = g_slist_delete_link(pending_property_set, l);
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return propdata;
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}
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void g_dbus_pending_property_success(GDBusPendingPropertySet id)
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{
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struct property_data *propdata;
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propdata = remove_pending_property_data(id);
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if (propdata == NULL)
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return;
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g_dbus_send_reply(propdata->conn, propdata->message,
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DBUS_TYPE_INVALID);
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dbus_message_unref(propdata->message);
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g_free(propdata);
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}
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void g_dbus_pending_property_error_valist(GDBusPendingReply id,
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const char *name, const char *format,
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va_list args)
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{
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struct property_data *propdata;
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propdata = remove_pending_property_data(id);
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if (propdata == NULL)
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return;
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g_dbus_send_error_valist(propdata->conn, propdata->message, name,
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format, args);
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dbus_message_unref(propdata->message);
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g_free(propdata);
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}
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|
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void g_dbus_pending_property_error(GDBusPendingReply id, const char *name,
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const char *format, ...)
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{
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va_list args;
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|
|
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va_start(args, format);
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|
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g_dbus_pending_property_error_valist(id, name, format, args);
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|
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va_end(args);
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}
|
|
|
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static void reset_parent(gpointer data, gpointer user_data)
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{
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struct generic_data *child = data;
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struct generic_data *parent = user_data;
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child->parent = parent;
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}
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|
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static void append_property(struct interface_data *iface,
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const GDBusPropertyTable *p, DBusMessageIter *dict)
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{
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DBusMessageIter entry, value;
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|
|
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dbus_message_iter_open_container(dict, DBUS_TYPE_DICT_ENTRY, NULL,
|
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&entry);
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dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &p->name);
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dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT, p->type,
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&value);
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p->get(p, &value, iface->user_data);
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|
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dbus_message_iter_close_container(&entry, &value);
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dbus_message_iter_close_container(dict, &entry);
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}
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|
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static void append_properties(struct interface_data *data,
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DBusMessageIter *iter)
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{
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DBusMessageIter dict;
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const GDBusPropertyTable *p;
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|
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dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY,
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DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
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DBUS_TYPE_STRING_AS_STRING
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DBUS_TYPE_VARIANT_AS_STRING
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DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
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|
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for (p = data->properties; p && p->name; p++) {
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if (check_experimental(p->flags,
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G_DBUS_PROPERTY_FLAG_EXPERIMENTAL))
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continue;
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|
|
if (p->get == NULL)
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continue;
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|
|
if (p->exists != NULL && !p->exists(p, data->user_data))
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continue;
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|
|
append_property(data, p, &dict);
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|
}
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|
|
dbus_message_iter_close_container(iter, &dict);
|
|
}
|
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|
|
static void append_interface(gpointer data, gpointer user_data)
|
|
{
|
|
struct interface_data *iface = data;
|
|
DBusMessageIter *array = user_data;
|
|
DBusMessageIter entry;
|
|
|
|
dbus_message_iter_open_container(array, DBUS_TYPE_DICT_ENTRY, NULL,
|
|
&entry);
|
|
dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &iface->name);
|
|
append_properties(data, &entry);
|
|
dbus_message_iter_close_container(array, &entry);
|
|
}
|
|
|
|
static void emit_interfaces_added(struct generic_data *data)
|
|
{
|
|
DBusMessage *signal;
|
|
DBusMessageIter iter, array;
|
|
|
|
if (root == NULL || data == root)
|
|
return;
|
|
|
|
signal = dbus_message_new_signal(root->path,
|
|
DBUS_INTERFACE_OBJECT_MANAGER,
|
|
"InterfacesAdded");
|
|
if (signal == NULL)
|
|
return;
|
|
|
|
dbus_message_iter_init_append(signal, &iter);
|
|
dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH,
|
|
&data->path);
|
|
|
|
dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY,
|
|
DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
|
|
DBUS_TYPE_STRING_AS_STRING
|
|
DBUS_TYPE_ARRAY_AS_STRING
|
|
DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
|
|
DBUS_TYPE_STRING_AS_STRING
|
|
DBUS_TYPE_VARIANT_AS_STRING
|
|
DBUS_DICT_ENTRY_END_CHAR_AS_STRING
|
|
DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &array);
|
|
|
|
g_slist_foreach(data->added, append_interface, &array);
|
|
g_slist_free(data->added);
|
|
data->added = NULL;
|
|
|
|
dbus_message_iter_close_container(&iter, &array);
|
|
|
|
/* Use dbus_connection_send to avoid recursive calls to g_dbus_flush */
|
|
dbus_connection_send(data->conn, signal, NULL);
|
|
dbus_message_unref(signal);
|
|
}
|
|
|
|
static struct interface_data *find_interface(GSList *interfaces,
|
|
const char *name)
|
|
{
|
|
GSList *list;
|
|
|
|
if (name == NULL)
|
|
return NULL;
|
|
|
|
for (list = interfaces; list; list = list->next) {
|
|
struct interface_data *iface = list->data;
|
|
if (!strcmp(name, iface->name))
|
|
return iface;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static gboolean g_dbus_args_have_signature(const GDBusArgInfo *args,
|
|
DBusMessage *message)
|
|
{
|
|
const char *sig = dbus_message_get_signature(message);
|
|
const char *p = NULL;
|
|
|
|
for (; args && args->signature && *sig; args++) {
|
|
p = args->signature;
|
|
|
|
for (; *sig && *p; sig++, p++) {
|
|
if (*p != *sig)
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
if (*sig || (p && *p) || (args && args->signature))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void add_pending(struct generic_data *data)
|
|
{
|
|
if (data->process_id > 0)
|
|
return;
|
|
|
|
data->process_id = g_idle_add(process_changes, data);
|
|
|
|
pending = g_slist_append(pending, data);
|
|
}
|
|
|
|
static gboolean remove_interface(struct generic_data *data, const char *name)
|
|
{
|
|
struct interface_data *iface;
|
|
|
|
iface = find_interface(data->interfaces, name);
|
|
if (iface == NULL)
|
|
return FALSE;
|
|
|
|
process_properties_from_interface(data, iface);
|
|
|
|
data->interfaces = g_slist_remove(data->interfaces, iface);
|
|
|
|
if (iface->destroy) {
|
|
iface->destroy(iface->user_data);
|
|
iface->user_data = NULL;
|
|
}
|
|
|
|
/*
|
|
* Interface being removed was just added, on the same mainloop
|
|
* iteration? Don't send any signal
|
|
*/
|
|
if (g_slist_find(data->added, iface)) {
|
|
data->added = g_slist_remove(data->added, iface);
|
|
g_free(iface->name);
|
|
g_free(iface);
|
|
return TRUE;
|
|
}
|
|
|
|
if (data->parent == NULL) {
|
|
g_free(iface->name);
|
|
g_free(iface);
|
|
return TRUE;
|
|
}
|
|
|
|
data->removed = g_slist_prepend(data->removed, iface->name);
|
|
g_free(iface);
|
|
|
|
add_pending(data);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static struct generic_data *invalidate_parent_data(DBusConnection *conn,
|
|
const char *child_path)
|
|
{
|
|
struct generic_data *data = NULL, *child = NULL, *parent = NULL;
|
|
char *parent_path, *slash;
|
|
|
|
parent_path = g_strdup(child_path);
|
|
slash = strrchr(parent_path, '/');
|
|
if (slash == NULL)
|
|
goto done;
|
|
|
|
if (slash == parent_path && parent_path[1] != '\0')
|
|
parent_path[1] = '\0';
|
|
else
|
|
*slash = '\0';
|
|
|
|
if (!strlen(parent_path))
|
|
goto done;
|
|
|
|
if (dbus_connection_get_object_path_data(conn, parent_path,
|
|
(void *) &data) == FALSE) {
|
|
goto done;
|
|
}
|
|
|
|
parent = invalidate_parent_data(conn, parent_path);
|
|
|
|
if (data == NULL) {
|
|
data = parent;
|
|
if (data == NULL)
|
|
goto done;
|
|
}
|
|
|
|
g_free(data->introspect);
|
|
data->introspect = NULL;
|
|
|
|
if (!dbus_connection_get_object_path_data(conn, child_path,
|
|
(void *) &child))
|
|
goto done;
|
|
|
|
if (child == NULL || g_slist_find(data->objects, child) != NULL)
|
|
goto done;
|
|
|
|
data->objects = g_slist_prepend(data->objects, child);
|
|
child->parent = data;
|
|
|
|
done:
|
|
g_free(parent_path);
|
|
return data;
|
|
}
|
|
|
|
static inline const GDBusPropertyTable *find_property(const GDBusPropertyTable *properties,
|
|
const char *name)
|
|
{
|
|
const GDBusPropertyTable *p;
|
|
|
|
for (p = properties; p && p->name; p++) {
|
|
if (strcmp(name, p->name) != 0)
|
|
continue;
|
|
|
|
if (check_experimental(p->flags,
|
|
G_DBUS_PROPERTY_FLAG_EXPERIMENTAL))
|
|
break;
|
|
|
|
return p;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static DBusMessage *properties_get(DBusConnection *connection,
|
|
DBusMessage *message, void *user_data)
|
|
{
|
|
struct generic_data *data = user_data;
|
|
struct interface_data *iface;
|
|
const GDBusPropertyTable *property;
|
|
const char *interface, *name;
|
|
DBusMessageIter iter, value;
|
|
DBusMessage *reply;
|
|
|
|
if (!dbus_message_get_args(message, NULL,
|
|
DBUS_TYPE_STRING, &interface,
|
|
DBUS_TYPE_STRING, &name,
|
|
DBUS_TYPE_INVALID))
|
|
return NULL;
|
|
|
|
iface = find_interface(data->interfaces, interface);
|
|
if (iface == NULL)
|
|
return g_dbus_create_error(message, DBUS_ERROR_INVALID_ARGS,
|
|
"No such interface '%s'", interface);
|
|
|
|
property = find_property(iface->properties, name);
|
|
if (property == NULL)
|
|
return g_dbus_create_error(message, DBUS_ERROR_INVALID_ARGS,
|
|
"No such property '%s'", name);
|
|
|
|
if (property->exists != NULL &&
|
|
!property->exists(property, iface->user_data))
|
|
return g_dbus_create_error(message, DBUS_ERROR_INVALID_ARGS,
|
|
"No such property '%s'", name);
|
|
|
|
if (property->get == NULL)
|
|
return g_dbus_create_error(message, DBUS_ERROR_INVALID_ARGS,
|
|
"Property '%s' is not readable", name);
|
|
|
|
reply = dbus_message_new_method_return(message);
|
|
if (reply == NULL)
|
|
return NULL;
|
|
|
|
dbus_message_iter_init_append(reply, &iter);
|
|
dbus_message_iter_open_container(&iter, DBUS_TYPE_VARIANT,
|
|
property->type, &value);
|
|
|
|
if (!property->get(property, &value, iface->user_data)) {
|
|
dbus_message_unref(reply);
|
|
return NULL;
|
|
}
|
|
|
|
dbus_message_iter_close_container(&iter, &value);
|
|
|
|
return reply;
|
|
}
|
|
|
|
static DBusMessage *properties_get_all(DBusConnection *connection,
|
|
DBusMessage *message, void *user_data)
|
|
{
|
|
struct generic_data *data = user_data;
|
|
struct interface_data *iface;
|
|
const char *interface;
|
|
DBusMessageIter iter;
|
|
DBusMessage *reply;
|
|
|
|
if (!dbus_message_get_args(message, NULL,
|
|
DBUS_TYPE_STRING, &interface,
|
|
DBUS_TYPE_INVALID))
|
|
return NULL;
|
|
|
|
iface = find_interface(data->interfaces, interface);
|
|
if (iface == NULL)
|
|
return g_dbus_create_error(message, DBUS_ERROR_INVALID_ARGS,
|
|
"No such interface '%s'", interface);
|
|
|
|
reply = dbus_message_new_method_return(message);
|
|
if (reply == NULL)
|
|
return NULL;
|
|
|
|
dbus_message_iter_init_append(reply, &iter);
|
|
|
|
append_properties(iface, &iter);
|
|
|
|
return reply;
|
|
}
|
|
|
|
static DBusMessage *properties_set(DBusConnection *connection,
|
|
DBusMessage *message, void *user_data)
|
|
{
|
|
struct generic_data *data = user_data;
|
|
DBusMessageIter iter, sub;
|
|
struct interface_data *iface;
|
|
const GDBusPropertyTable *property;
|
|
const char *name, *interface;
|
|
struct property_data *propdata;
|
|
gboolean valid_signature;
|
|
char *signature;
|
|
|
|
if (!dbus_message_iter_init(message, &iter))
|
|
return g_dbus_create_error(message, DBUS_ERROR_INVALID_ARGS,
|
|
"No arguments given");
|
|
|
|
if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
|
|
return g_dbus_create_error(message, DBUS_ERROR_INVALID_ARGS,
|
|
"Invalid argument type: '%c'",
|
|
dbus_message_iter_get_arg_type(&iter));
|
|
|
|
dbus_message_iter_get_basic(&iter, &interface);
|
|
dbus_message_iter_next(&iter);
|
|
|
|
if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
|
|
return g_dbus_create_error(message, DBUS_ERROR_INVALID_ARGS,
|
|
"Invalid argument type: '%c'",
|
|
dbus_message_iter_get_arg_type(&iter));
|
|
|
|
dbus_message_iter_get_basic(&iter, &name);
|
|
dbus_message_iter_next(&iter);
|
|
|
|
if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
|
|
return g_dbus_create_error(message, DBUS_ERROR_INVALID_ARGS,
|
|
"Invalid argument type: '%c'",
|
|
dbus_message_iter_get_arg_type(&iter));
|
|
|
|
dbus_message_iter_recurse(&iter, &sub);
|
|
|
|
iface = find_interface(data->interfaces, interface);
|
|
if (iface == NULL)
|
|
return g_dbus_create_error(message, DBUS_ERROR_INVALID_ARGS,
|
|
"No such interface '%s'", interface);
|
|
|
|
property = find_property(iface->properties, name);
|
|
if (property == NULL)
|
|
return g_dbus_create_error(message,
|
|
DBUS_ERROR_UNKNOWN_PROPERTY,
|
|
"No such property '%s'", name);
|
|
|
|
if (property->set == NULL)
|
|
return g_dbus_create_error(message,
|
|
DBUS_ERROR_PROPERTY_READ_ONLY,
|
|
"Property '%s' is not writable", name);
|
|
|
|
if (property->exists != NULL &&
|
|
!property->exists(property, iface->user_data))
|
|
return g_dbus_create_error(message,
|
|
DBUS_ERROR_UNKNOWN_PROPERTY,
|
|
"No such property '%s'", name);
|
|
|
|
signature = dbus_message_iter_get_signature(&sub);
|
|
valid_signature = strcmp(signature, property->type) ? FALSE : TRUE;
|
|
dbus_free(signature);
|
|
if (!valid_signature)
|
|
return g_dbus_create_error(message,
|
|
DBUS_ERROR_INVALID_SIGNATURE,
|
|
"Invalid signature for '%s'", name);
|
|
|
|
propdata = g_new(struct property_data, 1);
|
|
propdata->id = next_pending_property++;
|
|
propdata->message = dbus_message_ref(message);
|
|
propdata->conn = connection;
|
|
pending_property_set = g_slist_prepend(pending_property_set, propdata);
|
|
|
|
property->set(property, &sub, propdata->id, iface->user_data);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static const GDBusMethodTable properties_methods[] = {
|
|
{ GDBUS_METHOD("Get",
|
|
GDBUS_ARGS({ "interface", "s" }, { "name", "s" }),
|
|
GDBUS_ARGS({ "value", "v" }),
|
|
properties_get) },
|
|
{ GDBUS_ASYNC_METHOD("Set",
|
|
GDBUS_ARGS({ "interface", "s" }, { "name", "s" },
|
|
{ "value", "v" }),
|
|
NULL,
|
|
properties_set) },
|
|
{ GDBUS_METHOD("GetAll",
|
|
GDBUS_ARGS({ "interface", "s" }),
|
|
GDBUS_ARGS({ "properties", "a{sv}" }),
|
|
properties_get_all) },
|
|
{ }
|
|
};
|
|
|
|
static const GDBusSignalTable properties_signals[] = {
|
|
{ GDBUS_SIGNAL("PropertiesChanged",
|
|
GDBUS_ARGS({ "interface", "s" },
|
|
{ "changed_properties", "a{sv}" },
|
|
{ "invalidated_properties", "as"})) },
|
|
{ }
|
|
};
|
|
|
|
static void append_name(gpointer data, gpointer user_data)
|
|
{
|
|
char *name = data;
|
|
DBusMessageIter *iter = user_data;
|
|
|
|
dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &name);
|
|
}
|
|
|
|
static void emit_interfaces_removed(struct generic_data *data)
|
|
{
|
|
DBusMessage *signal;
|
|
DBusMessageIter iter, array;
|
|
|
|
if (root == NULL || data == root)
|
|
return;
|
|
|
|
signal = dbus_message_new_signal(root->path,
|
|
DBUS_INTERFACE_OBJECT_MANAGER,
|
|
"InterfacesRemoved");
|
|
if (signal == NULL)
|
|
return;
|
|
|
|
dbus_message_iter_init_append(signal, &iter);
|
|
dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH,
|
|
&data->path);
|
|
dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY,
|
|
DBUS_TYPE_STRING_AS_STRING, &array);
|
|
|
|
g_slist_foreach(data->removed, append_name, &array);
|
|
g_slist_free_full(data->removed, g_free);
|
|
data->removed = NULL;
|
|
|
|
dbus_message_iter_close_container(&iter, &array);
|
|
|
|
/* Use dbus_connection_send to avoid recursive calls to g_dbus_flush */
|
|
dbus_connection_send(data->conn, signal, NULL);
|
|
dbus_message_unref(signal);
|
|
}
|
|
|
|
static void remove_pending(struct generic_data *data)
|
|
{
|
|
if (data->process_id > 0) {
|
|
g_source_remove(data->process_id);
|
|
data->process_id = 0;
|
|
}
|
|
|
|
pending = g_slist_remove(pending, data);
|
|
}
|
|
|
|
static gboolean process_changes(gpointer user_data)
|
|
{
|
|
struct generic_data *data = user_data;
|
|
|
|
remove_pending(data);
|
|
|
|
if (data->added != NULL)
|
|
emit_interfaces_added(data);
|
|
|
|
/* Flush pending properties */
|
|
if (data->pending_prop == TRUE)
|
|
process_property_changes(data);
|
|
|
|
if (data->removed != NULL)
|
|
emit_interfaces_removed(data);
|
|
|
|
data->process_id = 0;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void generic_unregister(DBusConnection *connection, void *user_data)
|
|
{
|
|
struct generic_data *data = user_data;
|
|
struct generic_data *parent = data->parent;
|
|
|
|
if (parent != NULL)
|
|
parent->objects = g_slist_remove(parent->objects, data);
|
|
|
|
if (data->process_id > 0) {
|
|
g_source_remove(data->process_id);
|
|
data->process_id = 0;
|
|
process_changes(data);
|
|
}
|
|
|
|
g_slist_foreach(data->objects, reset_parent, data->parent);
|
|
g_slist_free(data->objects);
|
|
|
|
dbus_connection_unref(data->conn);
|
|
g_free(data->introspect);
|
|
g_free(data->path);
|
|
g_free(data);
|
|
}
|
|
|
|
static DBusHandlerResult generic_message(DBusConnection *connection,
|
|
DBusMessage *message, void *user_data)
|
|
{
|
|
struct generic_data *data = user_data;
|
|
struct interface_data *iface;
|
|
const GDBusMethodTable *method;
|
|
const char *interface;
|
|
|
|
interface = dbus_message_get_interface(message);
|
|
|
|
iface = find_interface(data->interfaces, interface);
|
|
if (iface == NULL)
|
|
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
|
|
|
|
for (method = iface->methods; method &&
|
|
method->name && method->function; method++) {
|
|
|
|
if (dbus_message_is_method_call(message, iface->name,
|
|
method->name) == FALSE)
|
|
continue;
|
|
|
|
if (check_experimental(method->flags,
|
|
G_DBUS_METHOD_FLAG_EXPERIMENTAL))
|
|
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
|
|
|
|
if (g_dbus_args_have_signature(method->in_args,
|
|
message) == FALSE)
|
|
continue;
|
|
|
|
if (check_privilege(connection, message, method,
|
|
iface->user_data) == TRUE)
|
|
return DBUS_HANDLER_RESULT_HANDLED;
|
|
|
|
return process_message(connection, message, method,
|
|
iface->user_data);
|
|
}
|
|
|
|
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
|
|
}
|
|
|
|
static DBusObjectPathVTable generic_table = {
|
|
.unregister_function = generic_unregister,
|
|
.message_function = generic_message,
|
|
};
|
|
|
|
static const GDBusMethodTable introspect_methods[] = {
|
|
{ GDBUS_METHOD("Introspect", NULL,
|
|
GDBUS_ARGS({ "xml", "s" }), introspect) },
|
|
{ }
|
|
};
|
|
|
|
static void append_interfaces(struct generic_data *data, DBusMessageIter *iter)
|
|
{
|
|
DBusMessageIter array;
|
|
GSList *l;
|
|
|
|
dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY,
|
|
DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
|
|
DBUS_TYPE_STRING_AS_STRING
|
|
DBUS_TYPE_ARRAY_AS_STRING
|
|
DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
|
|
DBUS_TYPE_STRING_AS_STRING
|
|
DBUS_TYPE_VARIANT_AS_STRING
|
|
DBUS_DICT_ENTRY_END_CHAR_AS_STRING
|
|
DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &array);
|
|
|
|
for (l = data->interfaces; l != NULL; l = l->next) {
|
|
if (g_slist_find(data->added, l->data))
|
|
continue;
|
|
|
|
append_interface(l->data, &array);
|
|
}
|
|
|
|
dbus_message_iter_close_container(iter, &array);
|
|
}
|
|
|
|
static void append_object(gpointer data, gpointer user_data)
|
|
{
|
|
struct generic_data *child = data;
|
|
DBusMessageIter *array = user_data;
|
|
DBusMessageIter entry;
|
|
|
|
dbus_message_iter_open_container(array, DBUS_TYPE_DICT_ENTRY, NULL,
|
|
&entry);
|
|
dbus_message_iter_append_basic(&entry, DBUS_TYPE_OBJECT_PATH,
|
|
&child->path);
|
|
append_interfaces(child, &entry);
|
|
dbus_message_iter_close_container(array, &entry);
|
|
|
|
g_slist_foreach(child->objects, append_object, user_data);
|
|
}
|
|
|
|
static DBusMessage *get_objects(DBusConnection *connection,
|
|
DBusMessage *message, void *user_data)
|
|
{
|
|
struct generic_data *data = user_data;
|
|
DBusMessage *reply;
|
|
DBusMessageIter iter;
|
|
DBusMessageIter array;
|
|
|
|
reply = dbus_message_new_method_return(message);
|
|
if (reply == NULL)
|
|
return NULL;
|
|
|
|
dbus_message_iter_init_append(reply, &iter);
|
|
|
|
dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY,
|
|
DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
|
|
DBUS_TYPE_OBJECT_PATH_AS_STRING
|
|
DBUS_TYPE_ARRAY_AS_STRING
|
|
DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
|
|
DBUS_TYPE_STRING_AS_STRING
|
|
DBUS_TYPE_ARRAY_AS_STRING
|
|
DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
|
|
DBUS_TYPE_STRING_AS_STRING
|
|
DBUS_TYPE_VARIANT_AS_STRING
|
|
DBUS_DICT_ENTRY_END_CHAR_AS_STRING
|
|
DBUS_DICT_ENTRY_END_CHAR_AS_STRING
|
|
DBUS_DICT_ENTRY_END_CHAR_AS_STRING,
|
|
&array);
|
|
|
|
g_slist_foreach(data->objects, append_object, &array);
|
|
|
|
dbus_message_iter_close_container(&iter, &array);
|
|
|
|
return reply;
|
|
}
|
|
|
|
static const GDBusMethodTable manager_methods[] = {
|
|
{ GDBUS_METHOD("GetManagedObjects", NULL,
|
|
GDBUS_ARGS({ "objects", "a{oa{sa{sv}}}" }), get_objects) },
|
|
{ }
|
|
};
|
|
|
|
static const GDBusSignalTable manager_signals[] = {
|
|
{ GDBUS_SIGNAL("InterfacesAdded",
|
|
GDBUS_ARGS({ "object", "o" },
|
|
{ "interfaces", "a{sa{sv}}" })) },
|
|
{ GDBUS_SIGNAL("InterfacesRemoved",
|
|
GDBUS_ARGS({ "object", "o" }, { "interfaces", "as" })) },
|
|
{ }
|
|
};
|
|
|
|
static gboolean add_interface(struct generic_data *data,
|
|
const char *name,
|
|
const GDBusMethodTable *methods,
|
|
const GDBusSignalTable *signals,
|
|
const GDBusPropertyTable *properties,
|
|
void *user_data,
|
|
GDBusDestroyFunction destroy)
|
|
{
|
|
struct interface_data *iface;
|
|
const GDBusMethodTable *method;
|
|
const GDBusSignalTable *signal;
|
|
const GDBusPropertyTable *property;
|
|
|
|
for (method = methods; method && method->name; method++) {
|
|
if (!check_experimental(method->flags,
|
|
G_DBUS_METHOD_FLAG_EXPERIMENTAL))
|
|
goto done;
|
|
}
|
|
|
|
for (signal = signals; signal && signal->name; signal++) {
|
|
if (!check_experimental(signal->flags,
|
|
G_DBUS_SIGNAL_FLAG_EXPERIMENTAL))
|
|
goto done;
|
|
}
|
|
|
|
for (property = properties; property && property->name; property++) {
|
|
if (!check_experimental(property->flags,
|
|
G_DBUS_PROPERTY_FLAG_EXPERIMENTAL))
|
|
goto done;
|
|
}
|
|
|
|
/* Nothing to register */
|
|
return FALSE;
|
|
|
|
done:
|
|
iface = g_new0(struct interface_data, 1);
|
|
iface->name = g_strdup(name);
|
|
iface->methods = methods;
|
|
iface->signals = signals;
|
|
iface->properties = properties;
|
|
iface->user_data = user_data;
|
|
iface->destroy = destroy;
|
|
|
|
data->interfaces = g_slist_append(data->interfaces, iface);
|
|
if (data->parent == NULL)
|
|
return TRUE;
|
|
|
|
data->added = g_slist_append(data->added, iface);
|
|
|
|
add_pending(data);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static struct generic_data *object_path_ref(DBusConnection *connection,
|
|
const char *path)
|
|
{
|
|
struct generic_data *data;
|
|
|
|
if (dbus_connection_get_object_path_data(connection, path,
|
|
(void *) &data) == TRUE) {
|
|
if (data != NULL) {
|
|
data->refcount++;
|
|
return data;
|
|
}
|
|
}
|
|
|
|
data = g_new0(struct generic_data, 1);
|
|
data->conn = dbus_connection_ref(connection);
|
|
data->path = g_strdup(path);
|
|
data->refcount = 1;
|
|
|
|
data->introspect = g_strdup(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE "<node></node>");
|
|
|
|
if (!dbus_connection_register_object_path(connection, path,
|
|
&generic_table, data)) {
|
|
dbus_connection_unref(data->conn);
|
|
g_free(data->path);
|
|
g_free(data->introspect);
|
|
g_free(data);
|
|
return NULL;
|
|
}
|
|
|
|
invalidate_parent_data(connection, path);
|
|
|
|
add_interface(data, DBUS_INTERFACE_INTROSPECTABLE, introspect_methods,
|
|
NULL, NULL, data, NULL);
|
|
|
|
return data;
|
|
}
|
|
|
|
static void object_path_unref(DBusConnection *connection, const char *path)
|
|
{
|
|
struct generic_data *data = NULL;
|
|
|
|
if (dbus_connection_get_object_path_data(connection, path,
|
|
(void *) &data) == FALSE)
|
|
return;
|
|
|
|
if (data == NULL)
|
|
return;
|
|
|
|
data->refcount--;
|
|
|
|
if (data->refcount > 0)
|
|
return;
|
|
|
|
remove_interface(data, DBUS_INTERFACE_INTROSPECTABLE);
|
|
remove_interface(data, DBUS_INTERFACE_PROPERTIES);
|
|
|
|
invalidate_parent_data(data->conn, data->path);
|
|
|
|
dbus_connection_unregister_object_path(data->conn, data->path);
|
|
}
|
|
|
|
static gboolean check_signal(DBusConnection *conn, const char *path,
|
|
const char *interface, const char *name,
|
|
const GDBusArgInfo **args)
|
|
{
|
|
struct generic_data *data = NULL;
|
|
struct interface_data *iface;
|
|
const GDBusSignalTable *signal;
|
|
|
|
*args = NULL;
|
|
if (!dbus_connection_get_object_path_data(conn, path,
|
|
(void *) &data) || data == NULL) {
|
|
error("dbus_connection_emit_signal: path %s isn't registered",
|
|
path);
|
|
return FALSE;
|
|
}
|
|
|
|
iface = find_interface(data->interfaces, interface);
|
|
if (iface == NULL) {
|
|
error("dbus_connection_emit_signal: %s does not implement %s",
|
|
path, interface);
|
|
return FALSE;
|
|
}
|
|
|
|
for (signal = iface->signals; signal && signal->name; signal++) {
|
|
if (strcmp(signal->name, name) != 0)
|
|
continue;
|
|
|
|
if (signal->flags & G_DBUS_SIGNAL_FLAG_EXPERIMENTAL) {
|
|
const char *env = g_getenv("GDBUS_EXPERIMENTAL");
|
|
if (g_strcmp0(env, "1") != 0)
|
|
break;
|
|
}
|
|
|
|
*args = signal->args;
|
|
return TRUE;
|
|
}
|
|
|
|
error("No signal named %s on interface %s", name, interface);
|
|
return FALSE;
|
|
}
|
|
|
|
gboolean g_dbus_register_interface(DBusConnection *connection,
|
|
const char *path, const char *name,
|
|
const GDBusMethodTable *methods,
|
|
const GDBusSignalTable *signals,
|
|
const GDBusPropertyTable *properties,
|
|
void *user_data,
|
|
GDBusDestroyFunction destroy)
|
|
{
|
|
struct generic_data *data;
|
|
|
|
data = object_path_ref(connection, path);
|
|
if (data == NULL)
|
|
return FALSE;
|
|
|
|
if (find_interface(data->interfaces, name)) {
|
|
object_path_unref(connection, path);
|
|
return FALSE;
|
|
}
|
|
|
|
if (!add_interface(data, name, methods, signals, properties, user_data,
|
|
destroy)) {
|
|
object_path_unref(connection, path);
|
|
return FALSE;
|
|
}
|
|
|
|
if (properties != NULL && !find_interface(data->interfaces,
|
|
DBUS_INTERFACE_PROPERTIES))
|
|
add_interface(data, DBUS_INTERFACE_PROPERTIES,
|
|
properties_methods, properties_signals, NULL,
|
|
data, NULL);
|
|
|
|
g_free(data->introspect);
|
|
data->introspect = NULL;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean g_dbus_unregister_interface(DBusConnection *connection,
|
|
const char *path, const char *name)
|
|
{
|
|
struct generic_data *data = NULL;
|
|
|
|
if (path == NULL)
|
|
return FALSE;
|
|
|
|
if (dbus_connection_get_object_path_data(connection, path,
|
|
(void *) &data) == FALSE)
|
|
return FALSE;
|
|
|
|
if (data == NULL)
|
|
return FALSE;
|
|
|
|
if (remove_interface(data, name) == FALSE)
|
|
return FALSE;
|
|
|
|
g_free(data->introspect);
|
|
data->introspect = NULL;
|
|
|
|
object_path_unref(connection, data->path);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean g_dbus_register_security(const GDBusSecurityTable *security)
|
|
{
|
|
if (security_table != NULL)
|
|
return FALSE;
|
|
|
|
security_table = security;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean g_dbus_unregister_security(const GDBusSecurityTable *security)
|
|
{
|
|
security_table = NULL;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
DBusMessage *g_dbus_create_error_valist(DBusMessage *message, const char *name,
|
|
const char *format, va_list args)
|
|
{
|
|
char str[1024];
|
|
|
|
vsnprintf(str, sizeof(str), format, args);
|
|
|
|
return dbus_message_new_error(message, name, str);
|
|
}
|
|
|
|
DBusMessage *g_dbus_create_error(DBusMessage *message, const char *name,
|
|
const char *format, ...)
|
|
{
|
|
va_list args;
|
|
DBusMessage *reply;
|
|
|
|
va_start(args, format);
|
|
|
|
reply = g_dbus_create_error_valist(message, name, format, args);
|
|
|
|
va_end(args);
|
|
|
|
return reply;
|
|
}
|
|
|
|
DBusMessage *g_dbus_create_reply_valist(DBusMessage *message,
|
|
int type, va_list args)
|
|
{
|
|
DBusMessage *reply;
|
|
|
|
reply = dbus_message_new_method_return(message);
|
|
if (reply == NULL)
|
|
return NULL;
|
|
|
|
if (dbus_message_append_args_valist(reply, type, args) == FALSE) {
|
|
dbus_message_unref(reply);
|
|
return NULL;
|
|
}
|
|
|
|
return reply;
|
|
}
|
|
|
|
DBusMessage *g_dbus_create_reply(DBusMessage *message, int type, ...)
|
|
{
|
|
va_list args;
|
|
DBusMessage *reply;
|
|
|
|
va_start(args, type);
|
|
|
|
reply = g_dbus_create_reply_valist(message, type, args);
|
|
|
|
va_end(args);
|
|
|
|
return reply;
|
|
}
|
|
|
|
static void g_dbus_flush(DBusConnection *connection)
|
|
{
|
|
GSList *l;
|
|
|
|
for (l = pending; l;) {
|
|
struct generic_data *data = l->data;
|
|
|
|
l = l->next;
|
|
if (data->conn != connection)
|
|
continue;
|
|
|
|
process_changes(data);
|
|
}
|
|
}
|
|
|
|
gboolean g_dbus_send_message(DBusConnection *connection, DBusMessage *message)
|
|
{
|
|
dbus_bool_t result = FALSE;
|
|
|
|
if (dbus_message_get_type(message) == DBUS_MESSAGE_TYPE_METHOD_CALL)
|
|
dbus_message_set_no_reply(message, TRUE);
|
|
else if (dbus_message_get_type(message) == DBUS_MESSAGE_TYPE_SIGNAL) {
|
|
const char *path = dbus_message_get_path(message);
|
|
const char *interface = dbus_message_get_interface(message);
|
|
const char *name = dbus_message_get_member(message);
|
|
const GDBusArgInfo *args;
|
|
|
|
if (!check_signal(connection, path, interface, name, &args))
|
|
goto out;
|
|
}
|
|
|
|
/* Flush pending signal to guarantee message order */
|
|
g_dbus_flush(connection);
|
|
|
|
result = dbus_connection_send(connection, message, NULL);
|
|
|
|
out:
|
|
dbus_message_unref(message);
|
|
|
|
return result;
|
|
}
|
|
|
|
gboolean g_dbus_send_message_with_reply(DBusConnection *connection,
|
|
DBusMessage *message,
|
|
DBusPendingCall **call, int timeout)
|
|
{
|
|
dbus_bool_t ret;
|
|
|
|
/* Flush pending signal to guarantee message order */
|
|
g_dbus_flush(connection);
|
|
|
|
ret = dbus_connection_send_with_reply(connection, message, call,
|
|
timeout);
|
|
|
|
if (ret == TRUE && call != NULL && *call == NULL) {
|
|
error("Unable to send message (passing fd blocked?)");
|
|
return FALSE;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
gboolean g_dbus_send_error_valist(DBusConnection *connection,
|
|
DBusMessage *message, const char *name,
|
|
const char *format, va_list args)
|
|
{
|
|
DBusMessage *error;
|
|
char str[1024];
|
|
|
|
vsnprintf(str, sizeof(str), format, args);
|
|
|
|
error = dbus_message_new_error(message, name, str);
|
|
if (error == NULL)
|
|
return FALSE;
|
|
|
|
return g_dbus_send_message(connection, error);
|
|
}
|
|
|
|
gboolean g_dbus_send_error(DBusConnection *connection, DBusMessage *message,
|
|
const char *name, const char *format, ...)
|
|
{
|
|
va_list args;
|
|
gboolean result;
|
|
|
|
va_start(args, format);
|
|
|
|
result = g_dbus_send_error_valist(connection, message, name,
|
|
format, args);
|
|
|
|
va_end(args);
|
|
|
|
return result;
|
|
}
|
|
|
|
gboolean g_dbus_send_reply_valist(DBusConnection *connection,
|
|
DBusMessage *message, int type, va_list args)
|
|
{
|
|
DBusMessage *reply;
|
|
|
|
reply = dbus_message_new_method_return(message);
|
|
if (reply == NULL)
|
|
return FALSE;
|
|
|
|
if (dbus_message_append_args_valist(reply, type, args) == FALSE) {
|
|
dbus_message_unref(reply);
|
|
return FALSE;
|
|
}
|
|
|
|
return g_dbus_send_message(connection, reply);
|
|
}
|
|
|
|
gboolean g_dbus_send_reply(DBusConnection *connection,
|
|
DBusMessage *message, int type, ...)
|
|
{
|
|
va_list args;
|
|
gboolean result;
|
|
|
|
va_start(args, type);
|
|
|
|
result = g_dbus_send_reply_valist(connection, message, type, args);
|
|
|
|
va_end(args);
|
|
|
|
return result;
|
|
}
|
|
|
|
gboolean g_dbus_emit_signal(DBusConnection *connection,
|
|
const char *path, const char *interface,
|
|
const char *name, int type, ...)
|
|
{
|
|
va_list args;
|
|
gboolean result;
|
|
|
|
va_start(args, type);
|
|
|
|
result = g_dbus_emit_signal_valist(connection, path, interface,
|
|
name, type, args);
|
|
|
|
va_end(args);
|
|
|
|
return result;
|
|
}
|
|
|
|
gboolean g_dbus_emit_signal_valist(DBusConnection *connection,
|
|
const char *path, const char *interface,
|
|
const char *name, int type, va_list args)
|
|
{
|
|
DBusMessage *signal;
|
|
dbus_bool_t ret;
|
|
const GDBusArgInfo *args_info;
|
|
|
|
if (!check_signal(connection, path, interface, name, &args_info))
|
|
return FALSE;
|
|
|
|
signal = dbus_message_new_signal(path, interface, name);
|
|
if (signal == NULL) {
|
|
error("Unable to allocate new %s.%s signal", interface, name);
|
|
return FALSE;
|
|
}
|
|
|
|
ret = dbus_message_append_args_valist(signal, type, args);
|
|
if (!ret)
|
|
goto fail;
|
|
|
|
if (g_dbus_args_have_signature(args_info, signal) == FALSE) {
|
|
error("%s.%s: got unexpected signature '%s'", interface, name,
|
|
dbus_message_get_signature(signal));
|
|
ret = FALSE;
|
|
goto fail;
|
|
}
|
|
|
|
return g_dbus_send_message(connection, signal);
|
|
|
|
fail:
|
|
dbus_message_unref(signal);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void process_properties_from_interface(struct generic_data *data,
|
|
struct interface_data *iface)
|
|
{
|
|
GSList *l;
|
|
DBusMessage *signal;
|
|
DBusMessageIter iter, dict, array;
|
|
GSList *invalidated;
|
|
|
|
data->pending_prop = FALSE;
|
|
|
|
if (iface->pending_prop == NULL)
|
|
return;
|
|
|
|
signal = dbus_message_new_signal(data->path,
|
|
DBUS_INTERFACE_PROPERTIES, "PropertiesChanged");
|
|
if (signal == NULL) {
|
|
error("Unable to allocate new " DBUS_INTERFACE_PROPERTIES
|
|
".PropertiesChanged signal");
|
|
return;
|
|
}
|
|
|
|
iface->pending_prop = g_slist_reverse(iface->pending_prop);
|
|
|
|
dbus_message_iter_init_append(signal, &iter);
|
|
dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &iface->name);
|
|
dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY,
|
|
DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
|
|
DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
|
|
DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
|
|
|
|
invalidated = NULL;
|
|
|
|
for (l = iface->pending_prop; l != NULL; l = l->next) {
|
|
GDBusPropertyTable *p = l->data;
|
|
|
|
if (p->get == NULL)
|
|
continue;
|
|
|
|
if (p->exists != NULL && !p->exists(p, iface->user_data)) {
|
|
invalidated = g_slist_prepend(invalidated, p);
|
|
continue;
|
|
}
|
|
|
|
append_property(iface, p, &dict);
|
|
}
|
|
|
|
dbus_message_iter_close_container(&iter, &dict);
|
|
|
|
dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY,
|
|
DBUS_TYPE_STRING_AS_STRING, &array);
|
|
for (l = invalidated; l != NULL; l = g_slist_next(l)) {
|
|
GDBusPropertyTable *p = l->data;
|
|
|
|
dbus_message_iter_append_basic(&array, DBUS_TYPE_STRING,
|
|
&p->name);
|
|
}
|
|
g_slist_free(invalidated);
|
|
dbus_message_iter_close_container(&iter, &array);
|
|
|
|
g_slist_free(iface->pending_prop);
|
|
iface->pending_prop = NULL;
|
|
|
|
/* Use dbus_connection_send to avoid recursive calls to g_dbus_flush */
|
|
dbus_connection_send(data->conn, signal, NULL);
|
|
dbus_message_unref(signal);
|
|
}
|
|
|
|
static void process_property_changes(struct generic_data *data)
|
|
{
|
|
GSList *l;
|
|
|
|
for (l = data->interfaces; l != NULL; l = l->next) {
|
|
struct interface_data *iface = l->data;
|
|
|
|
process_properties_from_interface(data, iface);
|
|
}
|
|
}
|
|
|
|
void g_dbus_emit_property_changed(DBusConnection *connection,
|
|
const char *path, const char *interface,
|
|
const char *name)
|
|
{
|
|
const GDBusPropertyTable *property;
|
|
struct generic_data *data;
|
|
struct interface_data *iface;
|
|
|
|
if (path == NULL)
|
|
return;
|
|
|
|
if (!dbus_connection_get_object_path_data(connection, path,
|
|
(void **) &data) || data == NULL)
|
|
return;
|
|
|
|
iface = find_interface(data->interfaces, interface);
|
|
if (iface == NULL)
|
|
return;
|
|
|
|
/*
|
|
* If ObjectManager is attached, don't emit property changed if
|
|
* interface is not yet published
|
|
*/
|
|
if (root && g_slist_find(data->added, iface))
|
|
return;
|
|
|
|
property = find_property(iface->properties, name);
|
|
if (property == NULL) {
|
|
error("Could not find property %s in %p", name,
|
|
iface->properties);
|
|
return;
|
|
}
|
|
|
|
if (g_slist_find(iface->pending_prop, (void *) property) != NULL)
|
|
return;
|
|
|
|
data->pending_prop = TRUE;
|
|
iface->pending_prop = g_slist_prepend(iface->pending_prop,
|
|
(void *) property);
|
|
|
|
add_pending(data);
|
|
}
|
|
|
|
gboolean g_dbus_get_properties(DBusConnection *connection, const char *path,
|
|
const char *interface, DBusMessageIter *iter)
|
|
{
|
|
struct generic_data *data;
|
|
struct interface_data *iface;
|
|
|
|
if (path == NULL)
|
|
return FALSE;
|
|
|
|
if (!dbus_connection_get_object_path_data(connection, path,
|
|
(void **) &data) || data == NULL)
|
|
return FALSE;
|
|
|
|
iface = find_interface(data->interfaces, interface);
|
|
if (iface == NULL)
|
|
return FALSE;
|
|
|
|
append_properties(iface, iter);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean g_dbus_attach_object_manager(DBusConnection *connection)
|
|
{
|
|
struct generic_data *data;
|
|
|
|
data = object_path_ref(connection, "/");
|
|
if (data == NULL)
|
|
return FALSE;
|
|
|
|
add_interface(data, DBUS_INTERFACE_OBJECT_MANAGER,
|
|
manager_methods, manager_signals,
|
|
NULL, data, NULL);
|
|
root = data;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean g_dbus_detach_object_manager(DBusConnection *connection)
|
|
{
|
|
if (!g_dbus_unregister_interface(connection, "/",
|
|
DBUS_INTERFACE_OBJECT_MANAGER))
|
|
return FALSE;
|
|
|
|
root = NULL;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void g_dbus_set_flags(int flags)
|
|
{
|
|
global_flags = flags;
|
|
}
|