dbus/interface.c

   1 /* -*- Mode: C ; c-basic-offset: 2 -*- */
   2 /*
   3  * LADI Session Handler (ladish)
   4  *
   5  * Copyright (C) 2008 Nedko Arnaudov <nedko@arnaudov.name>
   6  * Copyright (C) 2008 Juuso Alasuutari <juuso.alasuutari@gmail.com>
   7  *
   8  **************************************************************************
   9  * This file contains D-Bus interface dispatcher
  10  **************************************************************************
  11  *
  12  * LADI Session Handler is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * LADI Session Handler is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
  24  * or write to the Free Software Foundation, Inc.,
  25  * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  26  */
  27
  28 #include <string.h>
  29
  30 #include "../common/debug.h"
  31
  32 #include "interface.h"
  33 #include "error.h"
  34
  35 /*
  36  * Execute a method's function if the method specified in the method call
  37  * object exists in the method array. Return true if the method was found,
  38  * false otherwise.
  39  * TODO: rewrite description ^
  40  */
  41 bool
  42 interface_default_handler(const interface_t *interface,
  43                           method_call_t     *call)
  44 {
  45   const method_t *ptr;
  46
  47   for (ptr = (const method_t *) interface->methods;
  48        ptr && ptr->name;
  49        ++ptr) {
  50     if (strcmp(call->method_name, ptr->name) == 0) {
  51       if (ptr->handler) {
  52         call->interface = interface;
  53         ptr->handler(call);
  54
  55         /* If the method handler didn't construct a return
  56            message create a void one here */
  57         // TODO: Also handle cases where the sender doesn't need a reply
  58         if (!call->reply
  59             && !(call->reply = dbus_message_new_method_return(call->message))) {
  60           lash_error("Failed to construct void method return");
  61         }
  62       } else {
  63         lash_dbus_error(call, LASH_DBUS_ERROR_GENERIC,
  64                         "Handler for method \"%s\" is NULL", ptr->name);
  65       }
  66
  67       /* Found method */
  68       return true;
  69     }
  70   }
  71
  72   /* Didn't find method */
  73   return false;
  74 }
  75
  76 /* EOF */