sql_upgrade.php

<?php
// Copyright (C) 2008-2011 Rod Roark <rod@sunsetsystems.com>
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This may be run after an upgraded OpenEMR has been installed.
// Its purpose is to upgrade the MySQL OpenEMR database as needed
// for the new release.

// Disable PHP timeout.  This will not work in safe mode.
ini_set('max_execution_time', '0');

$ignoreAuth = true; // no login required

require_once('interface/globals.php');
require_once('library/sql.inc');

function tableExists($tblname) {
  $row = sqlQuery("SHOW TABLES LIKE '$tblname'");
  if (empty($row)) return false;
  return true;
}

function columnExists($tblname, $colname) {
  $row = sqlQuery("SHOW COLUMNS FROM $tblname LIKE '$colname'");
  if (empty($row)) return false;
  return true;
}

function columnHasType($tblname, $colname, $coltype) {
  $row = sqlQuery("SHOW COLUMNS FROM $tblname LIKE '$colname'");
  if (empty($row)) return true;
  return (strcasecmp($row['Type'], $coltype) == 0);
}

function tableHasRow($tblname, $colname, $value) {
  $row = sqlQuery("SELECT COUNT(*) AS count FROM $tblname WHERE " .
    "$colname LIKE '$value'");
  return $row['count'] ? true : false;
}

function tableHasRow2D($tblname, $colname, $value, $colname2, $value2) {
  $row = sqlQuery("SELECT COUNT(*) AS count FROM $tblname WHERE " .
    "$colname LIKE '$value' AND $colname2 LIKE '$value2'");
  return $row['count'] ? true : false;
}

function tableHasIndex($tblname, $colname) {
  $row = sqlQuery("SHOW INDEX FROM `$tblname` WHERE `Key_name` = '$colname'");
  return !empty($row);
}

function upgradeFromSqlFile($filename) {
  global $webserver_root;

  flush();
  echo "<font color='green'>Processing $filename ...</font><br />\n";

  $fullname = "$webserver_root/sql/$filename";

  $fd = fopen($fullname, 'r');
  if ($fd == FALSE) {
    echo "ERROR.  Could not open '$fullname'.\n";
    flush();
    break;
  }

  $query = "";
  $line = "";
  $skipping = false;

  while (!feof ($fd)){
    $line = fgets($fd, 2048);
    $line = rtrim($line);

    if (preg_match('/^\s*--/', $line)) continue;
    if ($line == "") continue;

    if (preg_match('/^#IfNotTable\s+(\S+)/', $line, $matches)) {
      $skipping = tableExists($matches[1]);
      if ($skipping) echo "<font color='green'>Skipping section $line</font><br />\n";
    }
    else if (preg_match('/^#IfTable\s+(\S+)/', $line, $matches)) {
      $skipping = ! tableExists($matches[1]);
      if ($skipping) echo "<font color='green'>Skipping section $line</font><br />\n";
    }
    else if (preg_match('/^#IfMissingColumn\s+(\S+)\s+(\S+)/', $line, $matches)) {
      if (tableExists($matches[1])) {
        $skipping = columnExists($matches[1], $matches[2]);
      }
      else {
        // If no such table then the column is deemed not "missing".
        $skipping = true;
      }
      if ($skipping) echo "<font color='green'>Skipping section $line</font><br />\n";
    }
    else if (preg_match('/^#IfNotColumnType\s+(\S+)\s+(\S+)\s+(\S+)/', $line, $matches)) {
      if (tableExists($matches[1])) {
        $skipping = columnHasType($matches[1], $matches[2], $matches[3]);
      }
      else {
        // If no such table then the column type is deemed not "missing".
        $skipping = true;
      }
      if ($skipping) echo "<font color='green'>Skipping section $line</font><br />\n";
    }
    else if (preg_match('/^#IfNotRow\s+(\S+)\s+(\S+)\s+(.+)/', $line, $matches)) {
      if (tableExists($matches[1])) {
        $skipping = tableHasRow($matches[1], $matches[2], $matches[3]);
      }
      else {
        // If no such table then the row is deemed not "missing".
        $skipping = true;
      }
      if ($skipping) echo "<font color='green'>Skipping section $line</font><br />\n";
    }
    else if (preg_match('/^#IfNotRow2D\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(.+)/', $line, $matches)) {
      if (tableExists($matches[1])) {
        $skipping = tableHasRow2D($matches[1], $matches[2], $matches[3], $matches[4], $matches[5]);
      }
      else {
        // If no such table then the row is deemed not "missing".
        $skipping = true;
      }
      if ($skipping) echo "<font color='green'>Skipping section $line</font><br />\n";
    }
    else if (preg_match('/^#IfNotIndex\s+(\S+)\s+(\S+)/', $line, $matches)) {
      if (tableExists($matches[1])) {
        $skipping = tableHasIndex($matches[1], $matches[2]);
      }
      else {
        // If no such table then the index is deemed not "missing".
        $skipping = true;
      }
      if ($skipping) echo "<font color='green'>Skipping section $line</font><br />\n";
    }

    else if (preg_match('/^#EndIf/', $line)) {
      $skipping = false;
    }

    if (preg_match('/^\s*#/', $line)) continue;
    if ($skipping) continue;

    $query = $query . $line;
    if (substr($query, -1) == ';') {
      $query = rtrim($query, ';');
      echo "$query<br />\n";
      if (!sqlStatement($query)) {
        echo "<font color='red'>The above statement failed: " .
          mysql_error() . "<br />Upgrading will continue.<br /></font>\n";
      }
      $query = '';
    }
  }
  flush();
} // end function

$versions = array();
$sqldir = "$webserver_root/sql";
$dh = opendir($sqldir);
if (! $dh) die("Cannot read $sqldir");
while (false !== ($sfname = readdir($dh))) {
  if (substr($sfname, 0, 1) == '.') continue;
  if (preg_match('/^(\d+)_(\d+)_(\d+)-to-\d+_\d+_\d+_upgrade.sql$/', $sfname, $matches)) {
    $version = $matches[1] . '.' . $matches[2] . '.' . $matches[3];
    $versions[$version] = $sfname;
  }
}
closedir($dh);
ksort($versions);
?>
<html>
<head>
<title>OpenEMR Database Upgrade</title>
<link rel='STYLESHEET' href='interface/themes/style_blue.css'>
</head>
<body>
<center>
<span class='title'>OpenEMR Database Upgrade</span>
<br>
</center>
<?php
if (!empty($_POST['form_submit'])) {
  $form_old_version = $_POST['form_old_version'];

  foreach ($versions as $version => $filename) {
    if (strcmp($version, $form_old_version) < 0) continue;
    upgradeFromSqlFile($filename);
  }

  if (file_exists("sql/custom_upgrade.sql")) {
    // Upgrade custom stuff.
    upgradeFromSqlFile('custom_upgrade.sql');
  }

  flush();
  echo "<font color='green'>Updating global configuration defaults...</font><br />\n";
  require_once("library/globals.inc.php");
  foreach ($GLOBALS_METADATA as $grpname => $grparr) {
    foreach ($grparr as $fldid => $fldarr) {
      list($fldname, $fldtype, $flddef, $flddesc) = $fldarr;
      if (substr($fldtype, 0, 2) !== 'm_') {
        $row = sqlQuery("SELECT count(*) AS count FROM globals WHERE gl_name = '$fldid'");
        if (empty($row['count'])) {
          sqlStatement("INSERT INTO globals ( gl_name, gl_index, gl_value ) " .
            "VALUES ( '$fldid', '0', '$flddef' )");
        }
      }
    }
  }

  echo "<font color='green'>Updating version indicators...</font><br />\n";
  sqlStatement("UPDATE version SET v_major = '$v_major', v_minor = '$v_minor', " .
    "v_patch = '$v_patch', v_tag = '$v_tag', v_database = '$v_database'");

  echo "<p><font color='green'>Database upgrade finished.</font></p>\n";
  echo "</body></html>\n";
  exit();
}

?>
<center>
<form method='post' action='sql_upgrade.php'>
<p>Please select the prior release you are converting from:
<select name='form_old_version'>
<?php
foreach ($versions as $version => $filename) {
  echo " <option value='$version'";
  // Defaulting to 2.8.3 only because it was out there for a long time,
  // and nothing should go wrong if that's too old.
  if ($version === '2.8.3') echo " selected";
  echo ">$version</option>\n";
}
?>
</select>
</p>
<p>If you are unsure or were using a development version between two
releases, then choose the older of possible releases.</p>
<p><input type='submit' name='form_submit' value='Upgrade Database' /></p>
</form>
</center>
</body>
</html>