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<?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 of 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 7.x
 *
 * This module allows Drupal to replace textarea fields with CKEditor.
 *
 * CKEditor is an online rich text editor that can be embedded inside web pages.
 * It is a WYSIWYG (What You See Is What You Get) editor which means that the
 * text edited in it looks as similar as possible to the results end users will
 * see after the document gets published. It brings to the Web popular editing
 * features found in desktop word processors such as Microsoft Word and
 * OpenOffice.org Writer. CKEditor is truly lightweight and does not 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 MySQL and PostgreSQL databases.
 *
 * If you are using another database, you will have to install the tables manually, 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');

  //searching ckeditor.js
  $editor_path = _ckeditor_script_path();
  //insert default input formats to profiles
  db_insert('ckeditor_input_format')->fields(array("name" => "Advanced", "format" => 'filtered_html'))->execute();
  db_insert('ckeditor_input_format')->fields(array("name" => "Full", "format" => 'full_html'))->execute();

  //insert settings for default role
  $arr = array();
  $arr['filebrowser'] = 'none';
  $arr['quickupload'] = 'f';

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

  //appearance
  $arr['default'] = "t";
  $arr['show_toggle'] = "t";
  $arr['popup'] = variable_get('ckeditor_popup', 0) ? "t" : "f";
  $arr['toolbar'] = "
[
    ['Source'],
    ['Cut','Copy','Paste','PasteText','PasteFromWord','-','SpellChecker', 'Scayt'],
    ['Undo','Redo','Find','Replace','-','SelectAll','RemoveFormat'],
    ['Image','Media','Flash','Table','HorizontalRule','Smiley','SpecialChar'],
    ['Maximize', 'ShowBlocks'],
    '/',
    ['Format'],
    ['Bold','Italic','Underline','Strike','-','Subscript','Superscript'],
    ['NumberedList','BulletedList','-','Outdent','Indent','Blockquote'],
    ['JustifyLeft','JustifyCenter','JustifyRight','JustifyBlock','-','BidiLtr','BidiRtl'],
    ['Link','Unlink','Anchor', 'Linkit']
]
    ";
  $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'] = "none";
  $arr['css_path'] = variable_get("ckeditor_stylesheet", "");

  //upload
  //get permissions here like in _update_role_permissions
  $arr['filebrowser'] = "none";
  $arr['user_choose'] = "f";
  $arr['ckeditor_load_method'] = "ckeditor.js";
  $arr['ckeditor_load_time_out'] = 0;
  $arr['scayt_autoStartup'] = "f";

  //advanced options
  $arr['html_entities'] = "f";

  db_insert('ckeditor_settings')->fields(array("name" => "Advanced", "settings" => serialize($arr)))->execute();

  //insert settings for advanced role
  $arr['toolbar'] = "
[
    ['Source'],
    ['Cut','Copy','Paste','PasteText','PasteFromWord','-','SpellChecker', 'Scayt'],
    ['Undo','Redo','Find','Replace','-','SelectAll','RemoveFormat'],
    ['Image','Media','Flash','Table','HorizontalRule','Smiley','SpecialChar','Iframe'],
    '/',
    ['Bold','Italic','Underline','Strike','-','Subscript','Superscript'],
    ['NumberedList','BulletedList','-','Outdent','Indent','Blockquote','CreateDiv'],
    ['JustifyLeft','JustifyCenter','JustifyRight','JustifyBlock','-','BidiLtr','BidiRtl'],
    ['Link','Unlink','Anchor', 'Linkit'],
    ['DrupalBreak'],
    '/',
    ['Format','Font','FontSize'],
    ['TextColor','BGColor'],
    ['Maximize', 'ShowBlocks']
]
    ";

  $arr['filters'] = array();

  db_insert('ckeditor_settings')->fields(array("name" => "Full", "settings" => serialize($arr)))->execute();

  $arr = array();

  if ($editor_path) {
    $arr['ckeditor_path'] = $editor_path;
  }

  db_insert('ckeditor_settings')->fields(array("name" => "CKEditor Global Profile", "settings" => serialize($arr)))->execute();

  module_load_include('inc', 'ckeditor', 'includes/ckeditor.admin');
}

/**
 * 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_input_format'] = array(
    'description' => 'Stores CKEditor input format assignments',
    'fields' => array(
      'name' => array(
        'type' => 'varchar',
        'not null' => TRUE,
        'default' => '',
        'length' => 128,
        'description' => 'Name of the CKEditor role',
      ),
      'format' => array(
        'type' => 'varchar',
        'not null' => TRUE,
        'default' => '',
        'length' => 128,
        'description' => 'Drupal filter format ID',
      )
    ),
    'primary key' => array('name', 'format'),
  );

  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('local');

      $requirements['ckeditor']['description'] = t('CKEditor was not found in <code>%sourcepath</code>.', 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;
          $requirements['ckeditor']['description'] = t('You are using a feature that requires <code>$cookie_domain</code> to be set, but it is not set in your <code>settings.php</code> file (CKFinder is enabled in the !profile profile).', array('!profile' => l($profile_name, 'admin/config/content/ckeditor/edit/' . urlencode($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')) && $installed_version != '%VERSION%') {
      $requirements['ckeditor']['description'] = t('Some features are disabled because you are using an older version of CKEditor. Please upgrade to CKEditor 3.1 (or higher).');
      $requirements['ckeditor']['severity'] = REQUIREMENT_INFO;
    }
    if (!empty($installed_version)) {
      if ($installed_version == '%VERSION%') {
        $requirements['ckeditor']['value'] = 'GIT version';
      }
      else {
        $requirements['ckeditor']['value'] = $installed_version;
      }
    }
    else {
      $requirements['ckeditor']['value'] = t('Not found');
    }
  }

  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 checkouts 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('local', TRUE);
  $jspath = $editor_path . '/ckeditor.js';

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

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

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

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

  $config_contents = file($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 in the <code>config.php</code> file. Please read the "Installing CKFinder" section in the <code>!readme</code> file carefully and add a <code>require_once ...</code> statement to the <code>%ckfconfig</code> file.', array('%ckfconfig' => $config_path, '!readme' => l(t('README.txt'), $base_url . '/' . drupal_get_path('module', 'ckeditor') . '/README.txt', array('absolute' => TRUE))));
  }

  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 in the <code>config.php</code> file. You have added a <code>require_once ...</code> statement to the <code>%ckfconfig</code> file, but in the wrong line.', array('%ckfconfig' => $config_path));
  }

  return FALSE;
}

/**
 * Checks if any profile requires an explicit setting of $cookie_domain
 * in settings.php.
 *
 * %cookie_domain is required when the internal file browser or quick upload is used.
 *
 * This function is used by ckeditor_requirements().
 *
 * @return boolean True if 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 was 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 if $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;
}

/**
 * Updates broken settings for the 'Full' profile. (Resets toolbar to default)
 */
function ckeditor_update_7000() {
  _ckeditor_d6_to_d7_migration();
  $result = db_query("SELECT settings FROM {ckeditor_settings} WHERE name = :name", array(':name' => 'Full'))->fetchField();
  $settings = unserialize($result);
  $settings['toolbar'] = "
[
    ['Source'],
    ['Cut','Copy','Paste','PasteText','PasteFromWord','-','SpellChecker', 'Scayt'],
    ['Undo','Redo','Find','Replace','-','SelectAll','RemoveFormat'],
    ['Image','Flash','Table','HorizontalRule','Smiley','SpecialChar'],
    '/',
    ['Bold','Italic','Underline','Strike','-','Subscript','Superscript'],
    ['NumberedList','BulletedList','-','Outdent','Indent','Blockquote'],
    ['JustifyLeft','JustifyCenter','JustifyRight','JustifyBlock','-','BidiLtr','BidiRtl'],
    ['Link','Unlink','Anchor'],
    ['DrupalBreak'],
    '/',
    ['Format','Font','FontSize'],
    ['TextColor','BGColor'],
    ['Maximize', 'ShowBlocks']
]
    ";

  $settings = serialize($settings);

  $update = db_update('ckeditor_settings')
      ->fields(array(
        'settings' => $settings,
      ))
      ->condition('name', 'Full', '=')
      ->execute();
}

/**
 * Removes the 'DrupalBreak' button from the 'Advanced' profile. (Resets toolbar to default)
 */
function ckeditor_update_7001() {
  $result = db_query("SELECT settings FROM {ckeditor_settings} WHERE name = :name", array(':name' => 'Advanced'))->fetchField();
  $settings = unserialize($result);
  $settings['toolbar'] = "
[
    ['Source'],
    ['Cut','Copy','Paste','PasteText','PasteFromWord','-','SpellChecker', 'Scayt'],
    ['Undo','Redo','Find','Replace','-','SelectAll','RemoveFormat'],
    ['Image','Flash','Table','HorizontalRule','Smiley','SpecialChar'],
    ['Maximize', 'ShowBlocks'],
    '/',
    ['Format'],
    ['Bold','Italic','Underline','Strike','-','Subscript','Superscript'],
    ['NumberedList','BulletedList','-','Outdent','Indent','Blockquote'],
    ['JustifyLeft','JustifyCenter','JustifyRight','JustifyBlock','-','BidiLtr','BidiRtl'],
    ['Link','Unlink','Anchor']
]
    ";

  $settings = serialize($settings);

  $update = db_update('ckeditor_settings')
      ->fields(array(
        'settings' => $settings,
      ))
      ->condition('name', 'Advanced', '=')
      ->execute();
}

/**
 * Rewrites 'Path to CKEditor' to new flags.
 */
function ckeditor_update_7002() {
  $result = db_query("SELECT settings FROM {ckeditor_settings} WHERE name = :name", array(':name' => 'CKEditor Global Profile'))->fetchField();
  $settings = unserialize($result);
  if ($settings['ckeditor_path'] == '%b/sites/all/libraries/ckeditor') {
    $settings['ckeditor_path'] = '%l/ckeditor';
  }
  else {
    $settings['ckeditor_path'] = str_replace('%b/', '', $settings['ckeditor_path']);
    $settings['ckeditor_path'] = str_replace('%b', '', $settings['ckeditor_path']);
  }

  $settings = serialize($settings);

  $update = db_update('ckeditor_settings')
      ->fields(array(
        'settings' => $settings,
      ))
      ->condition('name', 'CKEditor Global Profile', '=')
      ->execute();
}

/**
 * Fixes static paths to plugin files.
 */
function ckeditor_update_7003() {
  module_load_include('inc', 'ckeditor', 'includes/ckeditor.lib');
  module_load_include('module', 'ckeditor');

  _ckeditor_d6_to_d7_migration();

  $render = array();
  $render["%base_path%"] = base_path();
  $render["%editor_path%"] = ckeditor_path('relative') . '/';
  $render["%ckeditor_path%"] = ckeditor_module_path('relative');
  $render["%plugin_dir%"] = $render["%module_path%"] . '/plugins/';

  $result = db_query("SELECT * FROM {ckeditor_settings} WHERE name <> :name", array(':name' => 'CKEditor Global Profile'))->fetchAllAssoc('name');

  foreach ((array) $result as $profile) {
    $name = $profile->name;
    $settings = unserialize($profile->settings);

    foreach ((array) $settings['loadPlugins'] as $i => $plugin) {
      $settings['loadPlugins'][$i]['path'] = str_replace(array_values($render), array_keys($render), $plugin['path']);
    }

    $settings = serialize($settings);

    $update = db_update('ckeditor_settings')
        ->fields(array(
          'settings' => $settings,
        ))
        ->condition('name', $name, '=')
        ->execute();
  }
}

/**
 * Minor update for those who have run update.php with problems.
 * @see http://drupal.org/node/1347682 for a better explanation.
 */
function ckeditor_update_7004() {
  return _ckeditor_d6_to_d7_migration();
}

/**
 * Fixes plugin paths stored in database.
 * @see http://drupal.org/node/1864760 for more information
 */
function ckeditor_update_7005() {
  $result = db_query("SELECT * FROM {ckeditor_settings} WHERE name <> :name", array(':name' => 'CKEditor Global Profile'))->fetchAllAssoc('name');

  foreach ((array) $result as $profile) {
    $name = $profile->name;
    $settings = unserialize($profile->settings);

    $replace = array(
      "%base_path%%editor_path%" => "%editor_path%",
      "%base_path%%module_path%" => "%module_path%",
      "%base_path%%plugin_dir%" => "%plugin_dir%",
      "%base_path%%plugin_dir_extra%" => "%plugin_dir_extra%"
    );

    foreach ((array) $settings['loadPlugins'] as $i => $plugin) {
      $settings['loadPlugins'][$i]['path'] = str_replace(array_keys($replace), array_values($replace), $plugin['path']);
    }

    $settings = serialize($settings);

    db_update('ckeditor_settings')
        ->fields(array(
          'settings' => $settings,
        ))
        ->condition('name', $name, '=')
        ->execute();
  }
}

/**
 * Adapts D6 table structure to D7 schema.
 */
function _ckeditor_d6_to_d7_migration() {
  if (db_table_exists('ckeditor_role')) {
    db_drop_table('ckeditor_role');
  }
  if (!db_table_exists('ckeditor_input_format')) {
    $ckeditor_input_format = array(
      'description' => 'Stores CKEditor input format assignments',
      'fields' => array(
        'name' => array(
          'type' => 'varchar',
          'not null' => TRUE,
          'default' => '',
          'length' => 128,
          'description' => 'Name of the CKEditor role',
        ),
        'format' => array(
          'type' => 'varchar',
          'not null' => TRUE,
          'default' => '',
          'length' => 128,
          'description' => 'Drupal filter format ID',
        )
      ),
      'primary key' => array('name', 'format'),
    );
    db_create_table('ckeditor_input_format', $ckeditor_input_format);
  }
}