install.php

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<?php

require_once('domit/xml_domit_include.php');
require_once('domit/xml_domit_utilities.php');
require_once('embient.util.php');

define('XMLINST', 'install.xml');

define('INSTMAINSEC', 'embient');

// -----------------------------------------------------------------------------------
// Begin of Main
// -----------------------------------------------------------------------------------

// server's doc root
$docroot = $_SERVER['DOCUMENT_ROOT'];

// embient's root
$embient_dir = dirname(__FILE__);

// load scripts from install.xml
$script = embient_load_install();

// execute them!
foreach ( $script as $system => $sc )
{
  $dir = embient_search($docroot, $sc['detector']['filename'], $sc['detector']['signature']);

  if ( ! empty($dir) )
  {
    echo "Found $system in $dir. Installing Embient for $system<br>";
    flush();

    if ( ! empty($sc['create']) )
    {
      eval("\$content = \"". $sc['create']['content'] ."\";");
      embient_create("$dir/". $sc['create']['filename'], $content);
    }

    if ( ! empty($sc['append']) )
    {
      eval("\$content = \"". $sc['append']['content'] ."\";");
      embient_append("$dir/". $sc['append']['filename'], $content);
    }
  }
}

echo "Done!";

// -----------------------------------------------------------------------------------
// End of Main
// -----------------------------------------------------------------------------------

function embient_search($dir, $name, $sig)
{
  global $embient_dir;

  $curdir = getcwd();
  chdir($dir);

  foreach ( glob("*") as $filename )
  {
    // excluding embient's directory
    if ( $filename == basename($dir) )
    {
      continue;
    }

    // we found a directory, dig into it
    if ( is_dir($filename) )
    {
      $nextlevel = embient_search("$dir/$filename", $name, $sig);

      if ( ! empty($nextlevel) )
      {
        return $nextlevel;
      }
    }

    if ( $filename != $name )
    {
      continue;
    }

    // check the signature
    $content = implode("", file("$dir/$filename"));

    if ( strstr($content, $sig) )
    {
      return "$dir";
    }
  }

  chdir($curdir);
  return false;
}


function embient_append($filename, $content)
{
  if ( ! file_exists($filename) )
  {
    embient_create($filename, $content);
    return;
  }

  $orig   = file($filename);
  $output = array();
  $added  = false;

  foreach ($orig as $line)
  {
    $line = rtrim($line);

    if ( strstr($line, "<?") )
    {
      continue;
    }

    if ( strstr($line, "?>") )
    {
      $output = array_merge($output, $content);
      $added  = true;
      break;
    }

    array_push($output, $line);
  }

  if ( ! $added )
  {
      $output = array_merge($output, $content);
  }

  $str = implode("\n", $output);

  embient_create($filename, $str);
}


function embient_create($filename, $content)
{
  $file = fopen("$filename", "w");
  fwrite($file, "<?php\n");
  fwrite($file, "$content\n");
  fwrite($file, "?>");
  fclose($file);
}

function embient_load_install()
{
  global $embient_dir;

  $xmlinst = new DOMIT_Document(); //instance of a DOMIT! document

  if ( ! $xmlinst->loadXML("$embient_dir/". XMLINST) )
  {
    embient_error("Cannot load installation file - ". $xmlinst->getErrorString());
    return array();
  }

  return embient_create_XML_tree($xmlinst->documentElement);
}

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