<?php
/**************************************************************************
 *                                                                        *
 *    4images - A Web Based Image Gallery Management System               *
 *    ----------------------------------------------------------------    *
 *                                                                        *
 *             File: db_utils.php                                         *
 *        Copyright: (C) 2002-2012 Jan Sorgalla                           *
 *            Email: hide@address.com                                    *
 *              Web: http://www.4homepages.de                             *
 *    Scriptversion: 1.7.11                                               *
 *                                                                        *
 *    Never released without support from: Nicky (http://www.nicky.net)   *
 *                                                                        *
 **************************************************************************
 *                                                                        *
 *    Dieses Script ist KEINE Freeware. Bitte lesen Sie die Lizenz-       *
 *    bedingungen (Lizenz.txt) für weitere Informationen.                 *
 *    ---------------------------------------------------------------     *
 *    This script is NOT freeware! Please read the Copyright Notice       *
 *    (Licence.txt) for further information.                              *
 *                                                                        *
 *************************************************************************/
if (!defined('ROOT_PATH')) {
  die("Security violation");
}

function split_sql_dump($sql) {
  $sql = preg_replace("/\r/s", "\n", $sql);
  $sql = preg_replace("/[\n]{2,}/s", "\n", $sql);
  $lines = explode("\n", $sql);
  $queries = array();
  $in_query = 0;
  $i = 0;
  foreach ($lines as $line){
    $line = trim($line);
    if (!$in_query) {
      if (preg_match("/^CREATE/i", $line)) {
        $in_query = 1;
        $queries[$i] = $line;
      }
      elseif (!empty($line) && $line[0] != "#") {
        $queries[$i] = preg_replace("/;$/", "", $line);
        $i++;
      }
    }
    elseif ($in_query) {
      if (preg_match("/^[\)]/", $line)) {
        $in_query = 0;
        $queries[$i] .= preg_replace("/;$/", "", $line);
        $i++;
      }
      elseif (!empty($line) && $line[0] != "#") {
        $queries[$i] .= $line;
      }
    }
  }
  return $queries;
}

function get_table_def_mysql($table, $crlf) {
  global $site_db, $tables_info;
  $dump  = "DROP TABLE IF EXISTS $table;$crlf";
  if (get_mysql_version() >= 32321) {
    $site_db->query('SET SQL_QUOTE_SHOW_CREATE = 0');
    if ($row = $site_db->query_firstrow("SHOW CREATE TABLE $table")) {
      $dump .= str_replace("\n", $crlf, $row[1]);
    }
    $site_db->free_result();
    echo $dump.";".$crlf;
    return true;
  }
  $dump .= "CREATE TABLE $table (".$crlf;
  $result = $site_db->query("SHOW FIELDS FROM $table");
  while ($row = $site_db->fetch_array($result)) {
    $dump .= "   ".$row['Field']." ".((isset($row['Type'])) ? $row['Type'] : $row['Engine']);
    if ($row['Null'] != "YES") {
      $dump .= " NOT NULL";
    }
    if (isset($row['Default']) && $row['Default'] != "") {
      $dump .= " DEFAULT '".$row['Default']."'";
    }
    if ($row['Extra'] != "") {
      $dump .= " ".$row['Extra'];
    }
    $dump .= ",".$crlf;
  }
  $dump = preg_replace("/,".$crlf."$/", "", $dump);
  $site_db->free_result();

  $result = $site_db->query("SHOW KEYS FROM $table");
  $index = array();
  while ($row = $site_db->fetch_array($result)) {
    if ($row['Key_name'] != "PRIMARY" && $row['Non_unique'] == 0) {
      $row['Key_name'] = "UNIQUE|".$row['Key_name'];
    }
    if (isset($row['Comment']) && $row['Comment'] == "FULLTEXT") {
      $row['Key_name'] = "FULLTEXT|".$row['Key_name'];
    }
    if (!isset($index[$row['Key_name']])) {
      $index[$row['Key_name']] = $row['Column_name'];
    }
    else {
      $index[$row['Key_name']] .= ", ".$row['Column_name'];
    }
  }
  $site_db->free_result();

  if (!empty($index)) {
    foreach ($index as $key => $val) {
      preg_match("/(PRIMARY|UNIQUE|FULLTEXT)?[\|]?(.*)/i", $key, $regs);
      $dump .= ",".$crlf."   ".(!empty($regs[1]) ? $regs[1]." " : "")."KEY".(!empty($regs[2]) ? " ".$regs[2] : "")." (".$val.")";
    }
  }
  $dump .= $crlf.")".((isset($tables_info[$table])) ? " TYPE=".$tables_info[$table] : "").";";
  echo $dump.$crlf;
  return true;
}


function get_table_content_mysql($table, $crlf) {
  global $site_db;
  $result = $site_db->query("SELECT * FROM $table");
  if ($result && $site_db->get_numrows($result)) {
    echo $crlf."#".$crlf."# Table Data for ".$table.$crlf."#".$crlf;

    $column_list = "";
    $num_fields = $site_db->get_numfields($result);
    for ($i = 0; $i < $num_fields; $i++) {
      $column_list .= (($column_list != "") ? ", " : "").$site_db->get_fieldname($result, $i);
    }
  }

  while ($row = $site_db->fetch_array($result)) {
    $dump = "INSERT INTO ".$table." (".$column_list.") VALUES (";
    for ($i = 0; $i < $num_fields; $i++) {
      $dump .= ($i > 0) ? ", " : "";
      if (!isset($row[$i])) {
        $dump .= "NULL";
      }
      elseif ($row[$i] == "0" || $row[$i] != "") {
        $type = $site_db->get_fieldtype($result, $i);
        if ($type == "tinyint" || $type == "smallint" || $type == "mediumint" || $type == "int" || $type == "bigint") {
          $dump .= $row[$i];
        }
        else {
          $search_array = array('\\', '\'', "\x00", "\x0a", "\x0d", "\x1a");
          $replace_array = array('\\\\', '\\\'', '\0', '\n', '\r', '\Z');
          if (get_php_version() >= 40005) {
            $row[$i] = str_replace($search_array, $replace_array, $row[$i]);
          }
          else {
            for ($i = 0; $i < sizeof($search_array); $i++) {
              $row[$i] = str_replace($search_array[$i], $replace_array[$i], $row[$i]);
            }
          }
          $dump .= "'".$row[$i]."'";
        }
      }
      else {
       $dump .= "''";
      }
    }
    $dump .= ');';
    echo $dump.$crlf;
  }
  echo $crlf;
  return true;
}

function get_database_size() {
  global $global_info, $site_db, $db_name, $table_prefix;

  if (!empty($global_info['database_size'])) {
    return $global_info['database_size'];
  }

  $database_size_total = 0;
  $database_size_4images = 0;
  if (get_mysql_version() >= 32303) {
    $db = (get_mysql_version() >= 32306)  ? "`$db_name`" : $db_name;
    if ($result = $site_db->query("SHOW TABLE STATUS FROM $db")) {
      while ($row = $site_db->fetch_array($result)) {
        if (preg_match('/^(MyISAM|ISAM|HEAP|InnoDB)$/i', ((isset($row['Type'])) ? $row['Type'] : $row['Engine']))) {
          if ($table_prefix != "") {
            if (preg_match("/^".$table_prefix."/", $row['Name'])) {
              $database_size_4images += $row['Data_length'] + $row['Index_length'];
            }
            $database_size_total += $row['Data_length'] + $row['Index_length'];
          }
          else {
            $database_size_total += $row['Data_length'] + $row['Index_length'];
          }
        }
      }
    }
  }
  $global_info['database_size'] = array(
    "total" => $database_size_total,
    "4images" => $database_size_4images
  );
  return $global_info['database_size'];
}
?>