daemon/cmd_delete_room.c

   1 /* -*- Mode: C ; c-basic-offset: 2 -*- */
   2 /*
   3  * LADI Session Handler (ladish)
   4  *
   5  * Copyright (C) 2010 Nedko Arnaudov <nedko@arnaudov.name>
   6  *
   7  **************************************************************************
   8  * This file contains implementation of the "delete room" command
   9  **************************************************************************
  10  *
  11  * LADI Session Handler is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * LADI Session Handler is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
  23  * or write to the Free Software Foundation, Inc.,
  24  * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  25  */
  26
  27 #include "cmd.h"
  28 #include "studio_internal.h"
  29 #include "../dbus/error.h"
  30
  31 struct ladish_command_delete_room
  32 {
  33   struct ladish_command command; /* must be the first member */
  34   char * name;
  35 };
  36
  37 #define cmd_ptr ((struct ladish_command_delete_room *)context)
  38
  39 static bool run(void * context)
  40 {
  41   struct list_head * node_ptr;
  42   ladish_room_handle room;
  43
  44   if (cmd_ptr->command.state == LADISH_COMMAND_STATE_PENDING)
  45   {
  46     log_info("Delete studio room request (%s)", cmd_ptr->name);
  47   }
  48
  49   list_for_each(node_ptr, &g_studio.rooms)
  50   {
  51     room = ladish_room_from_list_node(node_ptr);
  52     if (strcmp(ladish_room_get_name(room), cmd_ptr->name) == 0)
  53     {
  54       goto found;
  55     }
  56   }
  57
  58   log_error("Cannot delete room with name \"%s\" because it is unknown", cmd_ptr->name);
  59   return false;
  60
  61 found:
  62   if (cmd_ptr->command.state == LADISH_COMMAND_STATE_PENDING)
  63   {
  64     ladish_room_initiate_stop(room, true);
  65     cmd_ptr->command.state = LADISH_COMMAND_STATE_WAITING;
  66     return true;
  67   }
  68
  69   ASSERT(cmd_ptr->command.state == LADISH_COMMAND_STATE_WAITING);
  70
  71   if (!ladish_room_stopped(room))
  72   {
  73     return true;
  74   }
  75
  76   /* ladish_graph_dump(g_studio.studio_graph); */
  77   /* ladish_graph_dump(g_studio.jack_graph); */
  78
  79   ladish_room_destroy(room);
  80
  81   ladish_graph_dump(g_studio.studio_graph);
  82   ladish_graph_dump(g_studio.jack_graph);
  83
  84   cmd_ptr->command.state = LADISH_COMMAND_STATE_DONE;
  85   return true;
  86 }
  87
  88 static void destructor(void * context)
  89 {
  90   log_info("delete_room command destructor");
  91   free(cmd_ptr->name);
  92 }
  93
  94 #undef cmd_ptr
  95
  96 bool ladish_command_delete_room(void * call_ptr, struct ladish_cqueue * queue_ptr, const char * room_name)
  97 {
  98   struct ladish_command_delete_room * cmd_ptr;
  99   char * room_name_dup;
 100
 101   room_name_dup = strdup(room_name);
 102   if (room_name_dup == NULL)
 103   {
 104     lash_dbus_error(call_ptr, LASH_DBUS_ERROR_GENERIC, "strdup('%s') failed.", room_name);
 105     goto fail;
 106   }
 107
 108   cmd_ptr = ladish_command_new(sizeof(struct ladish_command_delete_room));
 109   if (cmd_ptr == NULL)
 110   {
 111     lash_dbus_error(call_ptr, LASH_DBUS_ERROR_GENERIC, "ladish_command_new() failed.");
 112     goto fail_free_name;
 113   }
 114
 115   cmd_ptr->command.run = run;
 116   cmd_ptr->command.destructor = destructor;
 117   cmd_ptr->name = room_name_dup;
 118
 119   if (!ladish_cqueue_add_command(queue_ptr, &cmd_ptr->command))
 120   {
 121     lash_dbus_error(call_ptr, LASH_DBUS_ERROR_GENERIC, "ladish_cqueue_add_command() failed.");
 122     goto fail_destroy_command;
 123   }
 124
 125   return true;
 126
 127 fail_destroy_command:
 128   free(cmd_ptr);
 129 fail_free_name:
 130   free(room_name_dup);
 131 fail:
 132   return false;
 133 }