daemon/cmd_new_studio.c

   1 /* -*- Mode: C ; c-basic-offset: 2 -*- */
   2 /*
   3  * LADI Session Handler (ladish)
   4  *
   5  * Copyright (C) 2009 Nedko Arnaudov <nedko@arnaudov.name>
   6  *
   7  **************************************************************************
   8  * This file contains implementation of the "new studio" 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
  30 struct ladish_command_new_studio
  31 {
  32   struct ladish_command command; /* must be the first member */
  33   char * studio_name;
  34 };
  35
  36 #define cmd_ptr ((struct ladish_command_new_studio *)context)
  37
  38 static bool run(void * context)
  39 {
  40   ASSERT(cmd_ptr->command.state == LADISH_COMMAND_STATE_PENDING);
  41   ASSERT(g_studio.name == NULL); /* the unload command that was queued should have been cleared here */
  42
  43   if (*cmd_ptr->studio_name != 0)
  44   {
  45     g_studio.name = cmd_ptr->studio_name;
  46     cmd_ptr->studio_name = NULL;
  47   }
  48   else if (!studio_name_generate(&g_studio.name))
  49   {
  50     log_error("studio_name_generate() failed.");
  51     return false;
  52   }
  53
  54   if (!studio_publish())
  55   {
  56     log_error("studio_publish() failed.");
  57     free(g_studio.name);
  58     g_studio.name = NULL;
  59     return false;
  60   }
  61
  62   cmd_ptr->command.state = LADISH_COMMAND_STATE_DONE;
  63   return true;
  64 }
  65
  66 static void destructor(void * context)
  67 {
  68   log_info("studio name command destructor");
  69   if (cmd_ptr->studio_name != NULL)
  70   {
  71     free(cmd_ptr->studio_name);
  72   }
  73 }
  74
  75 #undef cmd_ptr
  76
  77 bool ladish_command_new_studio(void * call_ptr, struct ladish_cqueue * queue_ptr, const char * studio_name)
  78 {
  79   struct ladish_command_new_studio * cmd_ptr;
  80   char * studio_name_dup;
  81
  82   if (!ladish_command_unload_studio(call_ptr, queue_ptr))
  83   {
  84     goto fail;
  85   }
  86
  87   studio_name_dup = strdup(studio_name);
  88   if (studio_name_dup == NULL)
  89   {
  90     lash_dbus_error(call_ptr, LASH_DBUS_ERROR_GENERIC, "strdup('%s') failed.", studio_name);
  91     goto fail_drop_unload_command;
  92   }
  93
  94   cmd_ptr = ladish_command_new(sizeof(struct ladish_command_new_studio));
  95   if (cmd_ptr == NULL)
  96   {
  97     log_error("ladish_command_new() failed.");
  98     goto fail_free_name;
  99   }
 100
 101   cmd_ptr->command.run = run;
 102   cmd_ptr->command.destructor = destructor;
 103   cmd_ptr->studio_name = studio_name_dup;
 104
 105   if (!ladish_cqueue_add_command(queue_ptr, &cmd_ptr->command))
 106   {
 107     lash_dbus_error(call_ptr, LASH_DBUS_ERROR_GENERIC, "ladish_cqueue_add_command() failed.");
 108     goto fail_destroy_command;
 109   }
 110
 111   return true;
 112
 113 fail_destroy_command:
 114   free(cmd_ptr);
 115
 116 fail_free_name:
 117   free(studio_name_dup);
 118
 119 fail_drop_unload_command:
 120   ladish_cqueue_drop_command(queue_ptr);
 121
 122 fail:
 123   return false;
 124 }