dbus/interface.c

   1 /*
   2  *   LASH
   3  *
   4  *   Copyright (C) 2008 Juuso Alasuutari <juuso.alasuutari@gmail.com>
   5  *   Copyright (C) 2008 Nedko Arnaudov
   6  *
   7  *   This program is free software; you can redistribute it and/or modify
   8  *   it under the terms of the GNU General Public License as published by
   9  *   the Free Software Foundation; either version 2 of the License, or
  10  *   (at your option) any later version.
  11  *
  12  *   This program is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with this program; if not, write to the Free Software
  19  *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include <string.h>
  23
  24 #include "common/debug.h"
  25
  26 #include "dbus/interface.h"
  27 #include "dbus/error.h"
  28
  29 /*
  30  * Execute a method's function if the method specified in the method call
  31  * object exists in the method array. Return true if the method was found,
  32  * false otherwise.
  33  * TODO: rewrite description ^
  34  */
  35 bool
  36 interface_default_handler(const interface_t *interface,
  37                           method_call_t     *call)
  38 {
  39         const method_t *ptr;
  40
  41         for (ptr = (const method_t *) interface->methods;
  42              ptr && ptr->name;
  43              ++ptr) {
  44                 if (strcmp(call->method_name, ptr->name) == 0) {
  45                         if (ptr->handler) {
  46                                 call->interface = interface;
  47                                 ptr->handler(call);
  48
  49                                 /* If the method handler didn't construct a return
  50                                    message create a void one here */
  51                                 // TODO: Also handle cases where the sender doesn't need a reply
  52                                 if (!call->reply
  53                                     && !(call->reply = dbus_message_new_method_return(call->message))) {
  54                                         lash_error("Failed to construct void method return");
  55                                 }
  56                         } else {
  57                                 lash_dbus_error(call, LASH_DBUS_ERROR_GENERIC,
  58                                                 "Handler for method \"%s\" is NULL", ptr->name);
  59                         }
  60
  61                         /* Found method */
  62                         return true;
  63                 }
  64         }
  65
  66         /* Didn't find method */
  67         return false;
  68 }
  69
  70 /* EOF */