<?php
/*
 * CKEditor - The text editor for the Internet - http://ckeditor.com
 * Copyright (c) 2003-2011, CKSource - Frederico Knabben. All rights reserved.
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *    http://www.gnu.org/licenses/gpl.html
 *
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    http://www.gnu.org/licenses/lgpl.html
 *
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 *
 * == END LICENSE ==
 *
 * @file
 * CKEditor Module for Drupal 6.x
 *
 * This module allows Drupal to replace textarea fields with CKEditor.
 *
 * This HTML text editor brings to the web many of the powerful functionalities
 * of known desktop editors like Word. It's really  lightweight and doesn't
 * require any kind of installation on the client computer.
 */

/*
 * Implementation of hook_install().
 *
 * This will automatically install the database tables for the CKEditor module for both the MySQL and PostgreSQL databases.
 *
 * If you are using another database, you will have to install the tables by hand, using the queries below as a reference.
 *
 * Note that the curly braces around table names are a drupal-specific feature to allow for automatic database table prefixing,
 * and will need to be removed.
 */
function ckeditor_install() {
  module_load_include('inc', 'ckeditor', 'includes/ckeditor.lib');
  drupal_install_schema('ckeditor');

  //migration
  //checking fck editor schema version
  $rs=db_query("SELECT schema_version FROM {system} WHERE name='fckeditor'");
  $f_sv=FALSE;
  if ($row = db_fetch_array($rs)) {
    $f_sv=(int)$row['schema_version'];
  }

  //searching ckeditor.js
  $editor_path = _ckeditor_script_path();

  switch ($f_sv) {
    case 6201:
    case 6202:
      db_query("INSERT INTO {ckeditor_role}(name, rid) SELECT name, rid FROM {fckeditor_role}");
      $rs=db_query("SELECT * FROM {fckeditor_settings}");
      while ($row=db_fetch_array($rs)) {
        $nname=str_replace(array('FCKeditor', 'fckeditor'), array('CKEditor', 'ckeditor'), $row['name']);
        $settings=unserialize($row['settings']);
        if (array_key_exists('js_conf', $settings)) {
          unset($settings['js_conf']);
        }
        foreach ($settings as $k => $v) {
          if (FALSE!==strpos($k, 'fckeditor')) {
            unset($settings[$k]);
            $k=str_replace('fckeditor', 'ckeditor', $k);
          }
          if ((!is_array($v))&&(FALSE!==strpos($v, 'fckeditor'))) {
            $v=str_replace('fckeditor', 'ckeditor', $v);
          }
          if ($k == 'skin' && $v != 'office2003') {
            $v = 'kama';
          }
          if ($k == 'css_style' && $v != 'default') {
            $v = 'default';
          }
          if ($k == 'styles_path' && strlen($v) > 0) {
            $v='';
          }
          if ($editor_path && $k == 'ckeditor_path') {
            $v=$editor_path;
          }
          $settings[$k]=$v;
        }
        if (!array_key_exists('excl', $settings)) {
          $settings['excl']='';
        }
        if (!array_key_exists('simple_incl', $settings)) {
          $settings['simple_incl']='';
        }
        $settings=serialize($settings);
        db_query("INSERT INTO {ckeditor_settings}(name, settings) VALUES('%s', '%s')", $nname, $settings);
      }
      break;
    default:
      //create two default roles based on previous settings
      db_query("INSERT INTO {ckeditor_role} (name, rid) VALUES ('%s', %d)",
      "Default", defined('DRUPAL_ANONYMOUS_RID') ? DRUPAL_ANONYMOUS_RID : 1);
      db_query("INSERT INTO {ckeditor_role} (name, rid) VALUES ('%s', %d)",
      "Advanced", defined('DRUPAL_AUTHENTICATED_RID') ? DRUPAL_AUTHENTICATED_RID : 2);

      //insert settings for default role
      $arr = array();
      $arr['allow_user_conf'] = "f";
      $arr['min_rows'] = variable_get('ckeditor_minimum_rows', 1);
      $arr['excl_mode'] = variable_get('ckeditor_exclude_toggle', 0);
      $arr['filebrowser'] = 'none';
      $arr['quickupload'] = 'f';
      $arr['excl']='';
      $arr['simple_incl']='';

      //security
      $arr['ss'] = "2";
      $arr['filters']['filter/0'] = 1;

      //appearance
      $arr['default'] = "t";
      $arr['show_toggle'] = "t";
      $arr['popup'] = variable_get('ckeditor_popup', 0) ? "t" : "f";
      $arr['skin'] = "kama";
      $arr['toolbar'] = variable_get('ckeditor_default_toolbar', 'DrupalBasic');
      $arr['expand'] = variable_get('ckeditor_toolbar_start_expanded', 1) ? "t" : "f";
      $arr['width'] = variable_get("ckeditor_width", "100%");
      $arr['lang'] = "en";
      $arr['auto_lang'] = "t";
      $arr['language_direction'] = "default";
      
      //output
      $arr['enter_mode'] = "p";
      $arr['shift_enter_mode'] = "br";
      $arr['font_format'] = 'p;div;pre;address;h1;h2;h3;h4;h5;h6';
      $arr['format_source'] = "t";
      $arr['format_output'] = "t";
      $arr['custom_formatting'] = "f";
      $arr['formatting']['custom_formatting_options'] = array('indent' => 'indent', 'breakBeforeOpen' => 'breakBeforeOpen', 'breakAfterOpen' => 'breakAfterOpen', 'breakAfterClose' => 'breakAfterClose');

      //css
      $arr['css_mode'] = "theme";
      $arr['css_path'] = variable_get("ckeditor_stylesheet", "");

      //upload
      //get permissions here like in _update_role_permissions
      $arr['filebrowser'] = "none";
      $arr['user_choose'] = "f";
      $arr['show_fieldnamehint'] = "t";
      $arr['ckeditor_load_method'] = "ckeditor.js";
      $arr['ckeditor_load_time_out'] = 0;
      $arr['scayt_autoStartup'] = "f";

      db_query("INSERT INTO {ckeditor_settings} (name, settings) VALUES ('%s', '%s')", "Default", serialize($arr));

      //insert settings for advanced role
      $arr['toolbar'] = variable_get('ckeditor_advanced_toolbar', 'DrupalFiltered');
      db_query("INSERT INTO {ckeditor_settings} (name, settings) VALUES ('%s', '%s')", "Advanced", serialize($arr));

      $arr = array();

      //exclude by default some known textareas where HTML is not expected
      //edit-recipients //contact module
      //edit-reply //contact module
      //edit-description //taxonomy module
      //edit-synonyms //taxonomy module
      //edit-img-assist-textareas //img assist module
      $arr['excl_mode'] = 0;
      $arr['excl'] = variable_get("ckeditor_exclude",
      "admin/user/settings.edit-user-mail-*\n".
      "*.edit-pages\n".
      "*.edit-pathauto-ignore-words\n".
      "*.edit-recipients\n".
      "*.edit-reply\n".
      "*.edit-description\n".
      "*.edit-synonyms\n".
      "*.edit-img-assist-textareas\n".
      "*.edit-img-assist-paths\n".
      "*.edit-nodewords-description\n".
      "*.edit-nodewords-description-value\n".
      "admin/content/nodewords/global*\n".
      "*.edit-relatedlinks-fieldset-relatedlinks\n".
      "*.edit-allowed-values-php\n".
      "*.edit-allowed-values\n".
      "*.edit-update-notify-emails\n".
      "*.edit-googleanalytics-*\n".
      "*.edit-piwik-*\n".
      "*.edit-feedburner-useragents\n".
      "*@*.edit-webform-*\n".
      "webform@*.edit-extra-items\n".
      "admin/*/logintoboggan\n".
      "admin/settings/actions/configure/*\n".
      "*.edit-target\n".
      "*.edit-wysiwyg-filter-*\n".
      "admin/build/views/*\n"
      );

      //force by default simple toolbar on selected textareas
      $arr['simple_incl_mode'] = 1;
      $arr['simple_incl'] =
      "*.edit-signature\n".
      "admin/settings/site-information.*\n".
      "admin/settings/site-maintenance.*\n".
      "*.edit-page-help\n".
      "*.edit-user-registration-help\n".
      "*.edit-user-picture-guidelines\n";
      if ($editor_path) {
        $arr['ckeditor_path']=$editor_path;
      }

      db_query("INSERT INTO {ckeditor_settings} (name, settings) VALUES ('%s', '%s')", "CKEditor Global Profile", serialize($arr));
  }
  module_load_include('inc', 'ckeditor', 'includes/ckeditor.admin');
  ckeditor_rebuild_selectors();
}

/**
 * Implementation of hook_schema().
 */
function ckeditor_schema() {
  $schema['ckeditor_settings'] = array(
  'description' => 'Stores CKEditor profile settings',
  'fields' => array(
  'name'    => array(
  'type' => 'varchar',
  'not null' => TRUE,
  'default' => '',
  'length' => 128,
  'description' => 'Name of the CKEditor profile',
    ),
    'settings'    => array(
      'type' => 'text',
      'description' => 'Profile settings',
    ),
  ),
  'primary key' => array('name'),
  );
  $schema['ckeditor_role'] = array(
    'description' => 'Stores CKEditor profile assignments',
    'fields' => array(
      'name'    => array(
        'type' => 'varchar',
        'not null' => TRUE,
        'default' => '',
        'length' => 128,
        'description' => 'Name of the CKEditor role',
      ),
      'rid' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => 'Drupal role id',
      ),
    ),
    'primary key' => array('name', 'rid'),
  );

  return $schema;
}

/**
 * Implementation of hook_requirements().
 *
 * This hook will issue warnings if:
 * - The CKEditor source files are not found
 * - The CKEditor source files are out of date
 * - Quick upload and/or the built-in file browser are used and $cookie_domain is not set
 */
function ckeditor_requirements($phase) {
  $requirements = array();

  if ($phase == 'runtime') {
    module_load_include('module', 'ckeditor');
    module_load_include('inc', 'ckeditor', 'includes/ckeditor.lib');
    $requirements['ckeditor'] = array(
      'title' => t('CKEditor'),
      'value' => t('Unknown'),
    );

    $requirements['ckeditor']['severity'] = REQUIREMENT_OK;

    if (!_ckeditor_requirements_isinstalled()) {
      $sourcepath = ckeditor_path(TRUE);

      $requirements['ckeditor']['description'] = t('CKEditor was not found at %sourcepath', array('%sourcepath' => $sourcepath));
      $requirements['ckeditor']['severity'] = REQUIREMENT_ERROR;
    }
    elseif (($installed_version = _ckeditor_requirements_getinstalledversion()) === NULL) {
      $requirements['ckeditor']['description'] = t('CKEditor version could not be determined');
      $requirements['ckeditor']['severity'] = REQUIREMENT_INFO;
    }
    else {
      $profile_name = _ckeditor_requirements_ckfinder_filebrowser_enabled();
      if ($profile_name !== FALSE) {
        if (!_ckeditor_requirements_cookiedomainset()) {
          $requirements['ckeditor']['severity'] = REQUIREMENT_ERROR;
          $requirements['ckeditor']['description'] = t('You are using a feature that requires $cookie_domain to be set, but it is not set in your settings.php (CKFinder is enabled in the !profile profile).', array('!profile' => l($profile_name, 'admin/settings/ckeditor/edit/'. urlencode($profile_name))));
        }
        elseif ($error = _ckeditor_requirements_ckfinder_config_check($profile_name)) {
          $requirements['ckeditor']['severity'] = REQUIREMENT_ERROR;
          $requirements['ckeditor']['description'] = $error;
        }
      }
    }
    if ((($installed_version = _ckeditor_requirements_getinstalledversion()) !== NULL) && (-1==version_compare($installed_version, '3.1 SVN'))) {
      $requirements['ckeditor']['description'] = t('Some features are disabled because you\'re using an older version of CKEditor, please upgrade the editor to CKEditor 3.1 (or higher).');
      $requirements['ckeditor']['severity'] = REQUIREMENT_INFO;
    }
    if (!empty($installed_version)) {
      $requirements['ckeditor']['value'] = $installed_version;
    }
  }

  return $requirements;
}

/**
 * Fetches the version of the installed CKEditor sources
 *
 * It tries to locate the version of the CKEditor sources in
 * ckeditor.js
 *
 * Releases have a version number such as "3.0.1"
 * SVN nightly releases have a minor version number with SVN appended: "3.0 SVN"
 * SVN check outs have the string "[Development]"
 *
 * This function is used by ckeditor_requirements()
 *
 * @return string Version number (eg. 3.0) of CKEditor. Null if not found in ckeditor_basic.js
 */
function _ckeditor_requirements_getinstalledversion() {
  module_load_include('module', 'ckeditor');
  $editor_path = ckeditor_path(TRUE, TRUE);
  $jspath = $editor_path .'/ckeditor_basic.js';

  $configcontents = @file_get_contents($jspath);
  if (!$configcontents) {
    return NULL;
  }
  $matches = array();
  if (preg_match('#,version:\'(.*?)\',#', $configcontents, $matches)) {
    return $matches[1];
  }
  return NULL;
}

/**
 * Executed when built-in file browser is enabled
 * Returns FALSE if no errors are found in config.php file, otherwise it returns an error message.
 *
 * @return string|boolean
 */
function _ckeditor_requirements_ckfinder_config_check($profile_name) {
  module_load_include('module', 'ckeditor');
  $lib_path = dirname(ckeditor_path(TRUE));
  $config_path = $lib_path .'/ckfinder/config.php';

  if (!file_exists($config_path)) {
    return t('!ckfinder is not installed correctly: !config not found. Make sure that you have uploaded all files or didn\'t remove that file accidentally.', array(
      '!config' => $lib_path .'/ckfinder/config.php',
      '!ckfinder' => '<a href="http://ckfinder.com">CKFinder</a>'
    ));
  }

  if (!is_readable($config_path)) {
    return t('CKEditor needs read permission to !config.', array('!config' => 'ckfinder/config.php'));
  }

  $config_contents = file($config_path);

  //not a 100% valid check, but well... let's have at least some error checking
  $require_once_found = FALSE;
  $require_once_line = 0;
  $userfiles_absolute_path_line = 0;
  $force_single_extension_line = 0;

  if ($config_contents)
  foreach ($config_contents as $line_num => $line) {
    //make sure it doesn't start with a comment, unfortunately we're not protected if code is commented with /* */
    if (!$require_once_found && strpos($line, "filemanager.config.php") !== FALSE && !preg_match(",^(?://|\#|\*|/\*),", trim($line))) {
      $require_once_found = TRUE;
      $require_once_line = $line_num;
    }
    /**
     * @todo Finish this
     */
    if (!$userfiles_absolute_path_line && strpos($line, '$Config[\'UserFilesAbsolutePath\']') !== FALSE && !preg_match(",^(?://|\#|\*|/\*),", trim($line))) {
      $userfiles_absolute_path_line = $line_num;
    }
    if (!$force_single_extension_line && strpos($line, '$Config[\'ForceSingleExtension\']') !== FALSE && !preg_match(",^(?://|\#|\*|/\*),", trim($line))) {
      $force_single_extension_line = $line_num;
    }
  }

  if (!$require_once_found) {
    return t('You are using a feature that requires manual integration into config.php (either built-in filebrowser or quick uploads are enabled in the !profile profile). Read instructions about enabling built-in file browser and add "require_once ..." statement in editor/filemanager/connectors/php/config.php.', array('!profile' => l($profile_name, 'admin/settings/ckeditor/edit/'. urlencode($profile_name))));
  }

  if ($userfiles_absolute_path_line && $force_single_extension_line && (
  $require_once_line < $userfiles_absolute_path_line || $require_once_line > $force_single_extension_line)) {
    return t('You are using a feature that requires manual integration into config.php (either built-in filebrowser or quick uploads are enabled in the !profile profile). You have added "require_once ..." statement in editor/filemanager/connectors/php/config.php, but in the wrong line.', array('!profile' => l($profile_name, 'admin/settings/ckeditor/edit/'. urlencode($profile_name))));
  }

  return FALSE;
}

/**
 * Checks if any profile requires an explicit setting of $cookie_domain
 * in settings.php
 *
 * %cookie_domain is required when the internal filebrowser or quick upload is used
 *
 * This function is used by ckeditor_requirements()
 *
 * @return boolean True iff any profile requires $cookie_domain
 */
function _ckeditor_requirements_ckfinder_filebrowser_enabled() {
  module_load_include('module', 'ckeditor');
  $profiles = ckeditor_profile_load();

  foreach ($profiles as $profile) {
    if ((isset($profile->settings['filebrowser']) && $profile->settings['filebrowser'] == 'ckfinder')) {
      return $profile->name;
    }
  }

  return FALSE;
}

/**
 * Checks if $cookie_domain has been set
 *
 * It has to include settings.php again because conf_init() sets
 * $cookie_domain regardless of its presence in settings.php, so
 * simply checking $GLOBALS['cookie_domain'] is not possible.
 *
 * This function is used by ckeditor_requirements()
 *
 * @return boolean True iff $cookie_domain was set in settings.php
 */
function _ckeditor_requirements_cookiedomainset() {
  if (file_exists('./'. conf_path() .'/settings.php')) {
    $settings = file_get_contents('./'. conf_path() .'/settings.php');

    if (preg_match('#^\s*\$cookie_domain#m', $settings)) {
      return TRUE;
    }
  }

  return FALSE;
}

/**
 *	Implementation of hook_update_N().
 *
 *	Delete all plus signs from profiles name
 */
 
function ckeditor_update_6100() {
  $ret = array();
  $ret[] = update_sql( "UPDATE {ckeditor_role} SET name = REPLACE(name,'+','')");
  $ret[] = update_sql( "UPDATE {ckeditor_role} SET name = REPLACE(name,'/','')");
  $ret[] = update_sql( "UPDATE {ckeditor_settings} SET name = REPLACE(name,'+','')");
  $ret[] = update_sql( "UPDATE {ckeditor_settings} SET name = REPLACE(name,'/','')");
  
  return $ret;
}

/**
 * Implementation of hook_uninstall().
 */
function ckeditor_uninstall() {
  drupal_uninstall_schema('ckeditor');
}