112 lines
3.0 KiB
C
112 lines
3.0 KiB
C
/* -*- Mode: C ; c-basic-offset: 2 -*- */
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/*
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* LADI Session Handler (ladish)
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*
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* Copyright (C) 2009,2010,2011 Nedko Arnaudov <nedko@arnaudov.name>
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* Copyright (C) 2008 Juuso Alasuutari <juuso.alasuutari@gmail.com>
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*
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**************************************************************************
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* This file contains D-Bus signal helpers
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**************************************************************************
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*
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* Licensed under the Academic Free License version 2.1
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*
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* LADI Session Handler 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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* LADI Session Handler 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 LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
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* or write to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "../common.h"
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#include <stdarg.h>
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#include "helpers.h"
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void cdbus_signal_send(DBusConnection * connection_ptr, DBusMessage * message_ptr)
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{
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if (!dbus_connection_send(connection_ptr, message_ptr, NULL))
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{
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log_error("Ran out of memory trying to queue signal");
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}
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dbus_connection_flush(connection_ptr);
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}
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void
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cdbus_signal_emit(
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DBusConnection * connection_ptr,
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const char * path,
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const char * interface,
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const char * name,
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const char * signature,
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...)
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{
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DBusMessage * message_ptr;
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va_list ap;
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int type;
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DBusSignatureIter sig_iter;
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DBusMessageIter iter;
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void * parameter_ptr;
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log_debug("Sending signal %s.%s from %s", interface, name, path);
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va_start(ap, signature);
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ASSERT(signature != NULL);
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if (!dbus_signature_validate(signature, NULL))
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{
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log_error("signature '%s' is invalid", signature);
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goto exit;
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}
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dbus_signature_iter_init(&sig_iter, signature);
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message_ptr = dbus_message_new_signal(path, interface, name);
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if (message_ptr == NULL)
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{
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log_error("dbus_message_new_signal() failed.");
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goto exit;
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}
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dbus_message_iter_init_append(message_ptr, &iter);
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while (*signature != '\0')
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{
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type = dbus_signature_iter_get_current_type(&sig_iter);
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if (!dbus_type_is_basic(type))
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{
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log_error("non-basic input parameter '%c' (%d)", *signature, type);
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goto unref;
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}
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parameter_ptr = va_arg(ap, void *);
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if (!dbus_message_iter_append_basic(&iter, type, parameter_ptr))
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{
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log_error("dbus_message_iter_append_basic() failed.");
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goto unref;
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}
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dbus_signature_iter_next(&sig_iter);
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signature++;
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}
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cdbus_signal_send(connection_ptr, message_ptr);
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unref:
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dbus_message_unref(message_ptr);
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exit:
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va_end(ap);
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}
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