105 lines
2.9 KiB
Plaintext
105 lines
2.9 KiB
Plaintext
<?php
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/**
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* @file
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* The echo module converts text into a fully-themed page.
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*
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* @see http://drupal.org/project/htmlmail
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*/
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/**
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* Returns a page themed for the anonymous user.
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*
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* Generates the text of a fully-themed Drupal page. The rendered page is
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* returned as a text string instead of being sent to the browser. The
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* theme system can thus be used to style any HTML message as if it had
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* been generated by the live website.
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*
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* @param $title
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* The text to display as the page title.
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* @param $content
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* The text to display as the page body.
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* @param $theme
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* The machine-readable name of the theme to use.
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*
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* @return
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* A string containing the fully-themed html page.
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*/
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function echo_themed_page($title, $content, $theme) {
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$url = url('echo', array('absolute' => TRUE));
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// Store a hash of the arguments in the cache, which will be checked by
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// _echo_access() to ensure that the request originated from this function
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// and not from an external source.
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$key = sha1($title . $content . $theme);
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// Thirty seconds ought to be enough for anyone.
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$expiration = REQUEST_TIME + max(ini_get('max_execution_time'), 30);
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cache_set($key, $key, 'cache', $expiration);
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$options = array(
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'method' => 'POST',
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'data' => 'title=' . rawurlencode($title)
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. '&content=' . rawurlencode($content)
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. '&theme=' . rawurlencode($theme),
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'headers' => array('Content-Type' => 'application/x-www-form-urlencoded'),
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);
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$return = '';
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// Turn off maintenance mode so that anonymous page views work.
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if ($maintenance_mode = variable_get('maintenance_mode', 0)) {
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variable_set('maintenance_mode', 0);
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}
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if ( ($response = drupal_http_request($url, $options))
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&& isset($response->data) ) {
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$return = $response->data;
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}
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if ($maintenance_mode) {
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variable_set('maintenance_mode', $maintenance_mode);
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}
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return $return;
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}
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/**
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* Implements hook_menu().
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*/
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function echo_menu() {
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return array(
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'echo' => array(
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'title callback' => '_echo_request',
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'title arguments' => array('title'),
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'page callback' => '_echo_request',
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'page arguments' => array('content'),
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'theme callback' => '_echo_request',
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'theme arguments' => array('theme'),
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'access callback' => '_echo_access',
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'type' => MENU_CALLBACK,
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)
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);
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}
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/**
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* Returns the contents of a _REQUEST variable.
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*/
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function _echo_request($key) {
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return isset($_REQUEST[$key]) ? $_REQUEST[$key] : '';
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}
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/**
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* Returns TRUE if this request originated from the echo_themed_page() function;
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* FALSE otherwise.
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*/
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function _echo_access() {
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if (isset($_REQUEST['title'])) {
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if (isset($_REQUEST['content'])) {
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if (isset($_REQUEST['theme'])) {
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$key = sha1(
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$_REQUEST['title'] . $_REQUEST['content'] . $_REQUEST['theme']
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);
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if ($access = cache_get($key)) {
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if ($access->data == $key) {
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return TRUE;
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}
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}
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}
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}
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}
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return FALSE;
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}
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