/*
   Bacula(R) - The Network Backup Solution

   Copyright (C) 2000-2018 Kern Sibbald

   The original author of Bacula is Kern Sibbald, with contributions
   from many others, a complete list can be found in the file AUTHORS.

   You may use this file and others of this release according to the
   license defined in the LICENSE file, which includes the Affero General
   Public License, v3.0 ("AGPLv3") and some additional permissions and
   terms pursuant to its AGPLv3 Section 7.

   This notice must be preserved when any source code is
   conveyed and/or propagated.

   Bacula(R) is a registered trademark of Kern Sibbald.
*/
/* 
 *  Written by James Harper, October 2008
 */

#include "exchange-fd.h"

service_node_t::service_node_t(char *name, node_t *parent_node) : node_t(name, NODE_TYPE_SERVICE, parent_node)
{
   current_ibi = 0;
   hccx = NULL;
   ibi = NULL;
   ibi_count = 0;
   first_storage_group_node = NULL;
}

service_node_t::~service_node_t()
{
}

bRC
service_node_t::startBackupFile(exchange_fd_context_t *context, struct save_pkt *sp)
{
   HRESULT result;
   char aname[256];

   _DebugMessage(100, "startBackupNode_SERVICE state = %d\n", state);
   switch(state)
   {
   case 0:
      if (strcmp(PLUGIN_PATH_PREFIX_SERVICE, name) != 0)
      {
         _JobMessage(M_FATAL, "Invalid restore path specified, must start with /" PLUGIN_PATH_PREFIX_BASE "/" PLUGIN_PATH_PREFIX_SERVICE "/\n");
         return bRC_Error;
      }
      // convert name to a wide string

      _DebugMessage(100, "Calling HrESEBackupPrepare\n");
      wcstombs(aname, context->computer_name, 256);
      _JobMessage(M_INFO, "Preparing Exchange Backup for %s\n", aname);
      result = HrESEBackupPrepare(context->computer_name, PLUGIN_PATH_PREFIX_SERVICE_W, &ibi_count, &ibi, &hccx);
      if (result != 0)
      {
         _JobMessage(M_FATAL, "HrESEBackupPrepare failed with error 0x%08x - %s\n", result, ESEErrorMessage(result));
         return bRC_Error;
      }
      state = 1;
      // fall through
   case 1:
      if (context->path_bits[level + 1] == NULL)
      {
         _DebugMessage(100, "No specific storage group specified - backing them all up\n");
         char *tmp = new char[wcslen(ibi[current_ibi].wszInstanceName) + 1];
         wcstombs(tmp, ibi[current_ibi].wszInstanceName, wcslen(ibi[current_ibi].wszInstanceName) + 1);
         first_storage_group_node = new storage_group_node_t(tmp, this);
         delete tmp;
         _DebugMessage(100, "storage group name = %s\n", first_storage_group_node->name);
         first_storage_group_node->ibi = &ibi[current_ibi];
         first_storage_group_node->hccx = hccx;
         context->current_node = first_storage_group_node;
      }
      else
      {
         char *tmp = NULL;
         for (current_ibi = 0; current_ibi < ibi_count; current_ibi++)
         {
            tmp = new char[wcslen(ibi[current_ibi].wszInstanceName) + 1];
            wcstombs(tmp, ibi[current_ibi].wszInstanceName, wcslen(ibi[current_ibi].wszInstanceName) + 1);
            if (stricmp(tmp, context->path_bits[level + 1]) == 0)
               break;
         }
         first_storage_group_node = new storage_group_node_t(tmp, this);
         delete tmp;
         if (current_ibi == ibi_count)
         {
            _JobMessage(M_FATAL, "Invalid Storage Group '%s'\n", context->path_bits[level + 1]);
            return bRC_Error;
         }
         _DebugMessage(100, "storage group name = %s\n", first_storage_group_node->name);
         first_storage_group_node->ibi = &ibi[current_ibi];
         first_storage_group_node->hccx = hccx;
         context->current_node = first_storage_group_node;
      }
      break;
   case 2:
      time_t now = time(NULL);
      sp->fname = full_path;
      sp->link = full_path;
      sp->statp.st_mode = 0700 | S_IFDIR;
      sp->statp.st_ctime = now;
      sp->statp.st_mtime = now;
      sp->statp.st_atime = now;
      sp->statp.st_size = 0;
      sp->statp.st_nlink = 1;
      //sp->statp.st_blocks = 0;
      sp->type = FT_DIREND;
      break;
   }
   _DebugMessage(100, "ending startBackupNode_SERVICE state = %d\n", state);
   return bRC_OK;
}

bRC
service_node_t::endBackupFile(exchange_fd_context_t *context)
{
   HRESULT result;
   bRC retval = bRC_OK;

   _DebugMessage(100, "endBackupNode_SERVICE state = %d\n", state);
   switch(state)
   {
   case 0:
      // should never happen
      break;
   case 1:
      // free node->storage_group_node
      if (context->path_bits[level + 1] == NULL)
      {
         current_ibi++;
         if (current_ibi == ibi_count)
            state = 2;
      }
      else
         state = 2;
      retval = bRC_More;
      break;
   case 2:
      _DebugMessage(100, "calling HrESEBackupEnd\n");
      result = HrESEBackupEnd(hccx);
      if (result != 0)
      {
         _JobMessage(M_FATAL, "HrESEBackupEnd failed with error 0x%08x - %s\n", result, ESEErrorMessage(result));
         return bRC_Error;
      }

      context->current_node = parent;
      retval = bRC_OK;
      break;
   }
   return retval;
}

bRC
service_node_t::createFile(exchange_fd_context_t *context, struct restore_pkt *rp)
{
   storage_group_node_t *curr_sg, *prev_sg;

   _DebugMessage(100, "createFile_SERVICE state = %d\n", state);
   if (strcmp(name, "Microsoft Information Store") != 0)
   {
      _JobMessage(M_FATAL, "Invalid restore path specified, must start with '/" PLUGIN_PATH_PREFIX_BASE "/" PLUGIN_PATH_PREFIX_SERVICE "/'\n", state);
      return bRC_Error;
   }
   for(;;)
   {
      switch (state)
      {
      case 0:
         if (context->path_bits[level + 1] == NULL)
         {
            state = 1;
            break;
         }
         for (prev_sg = NULL, curr_sg = first_storage_group_node; curr_sg != NULL; prev_sg = curr_sg, curr_sg = curr_sg->next)
         {
            if (strcmp(curr_sg->name, context->path_bits[level + 1]) == 0)
            {
               break;
            }
         }
         if (curr_sg == NULL)
         {
            curr_sg = new storage_group_node_t(bstrdup(context->path_bits[level + 1]), this);
            if (prev_sg == NULL)
               first_storage_group_node = curr_sg;
            else
               prev_sg->next = curr_sg;
         }
         context->current_node = curr_sg;
         return bRC_OK;
      case 1:
         rp->create_status = CF_CREATED;
         return bRC_OK;
      }
   }
   return bRC_Error;
}

bRC
service_node_t::endRestoreFile(exchange_fd_context_t *context)
{
   _DebugMessage(100, "endRestoreFile_SERVICE state = %d\n", state);
   switch(state)
   {
   case 0:
      return bRC_Error;
   case 1:
      context->current_node = parent;
      return bRC_OK;
   }

   return bRC_Error;
}
