/[drupal]/contributions/modules/toggle_www/toggle_www.module
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revision 1.3, Sat Oct 21 11:47:04 2006 UTC revision 1.4, Fri Apr 18 17:15:39 2008 UTC
# Line 1  Line 1 
1  <?php  <?php
2    // $Id: $
3    
4    // Fire the toggle check.
5  if (function_exists('toggle_www_redirect'))  {  if (function_exists('toggle_www_redirect'))  {
6    toggle_www_redirect(variable_get('toggle_www_method', 0));    toggle_www_redirect(variable_get('toggle_www_method', 0));
7  }  }
8    
9  function toggle_www_help($section) {  /**
10    switch ($section) {   * Implementation of hook_help().
11     */
12    function toggle_www_help($path, $arg) {
13      switch ($path) {
14      case 'admin/modules#description':      case 'admin/modules#description':
15        return t('An easy, PHP header redirect based way to redirect incoming links from http://www.example.com to http://example.com and vice-versa.');        return t('An easy, PHP header redirect based way to redirect incoming links from http://www.example.com to http://example.com or vice-versa.');
16    }    }
17  }  }
18    
19  function toggle_www_redirect($method = 0) {  /**
20  if ($_SERVER['HTTP_HOST'] == 'localhost')   * Implementation of hook_menu().
21  {   */
22    $method = 0;  function toggle_www_menu() {
23  }    $items = array();
24  if ($method == 0) {  
25    return;    $items['admin/settings/toggle_www'] = array(
26        'title' => t('Toggle WWW'),
27        'description' => t('Set the preferred URL style.'),
28        'page callback' => 'drupal_get_form',
29        'page arguments' => array('toggle_www_settings'),
30        'access callback' => 'user_access',
31        'access arguments' => array('administer site configuration'),
32        'type' => MENU_NORMAL_ITEM,
33      );
34    
35      return $items;
36  }  }
37  // $method = 1 means redirect from www.example.com to example.com  
38  if ($method == 1) {  /**
39    if ( !strstr( $_SERVER['HTTP_HOST'], 'www.' )) // if its already example.com, take no action   * toggle_www redirect helper.
40     */
41    function toggle_www_redirect($method = 0) {
42      if ($_SERVER['HTTP_HOST'] == 'localhost' || $method == 0) {
43      // do not redirect.
44      return;      return;
45    // otherwise pass permanently moved information into header and redirect to example.com    }
46    header('HTTP/1.1 301 Moved Permanently');  
47    header('Location: http://' . substr($_SERVER['HTTP_HOST'], 4) . $_SERVER['REQUEST_URI']);    if ($_SERVER['HTTPS'] == 'on' || $_SERVER['SERVER_PORT'] == 443) {
48    return;      // Maintain a secure connection protocol.
49  }      $protocol = 'https';
50  // $method = 2 means redirect from example.com to www.example.com    }
51  elseif ($method == 2) {    else {
52    if ( strstr( $_SERVER['HTTP_HOST'], 'www.' )) // if its already www.example.com, take no action      // Normal connection protocol.
53        $protocol = 'http';
54      }
55    
56      if ($method == 1) {
57      // redirect from www.example.com to example.com.
58        if (!strstr($_SERVER['HTTP_HOST'], 'www.')) // if its already example.com, take no action
59          return;
60        // otherwise pass permanently moved information into header and redirect to example.com
61        header('HTTP/1.1 301 Moved Permanently');
62        header('Location: '. $protocol .'://' . substr($_SERVER['HTTP_HOST'], 4) . request_uri());
63      return;      return;
64    // otherwise pass permanently moved information into header and redirect to www.example.com    }
65    header('HTTP/1.1 301 Moved Permanently');    elseif ($method == 2) {
66    header('Location: http://www.' . substr($_SERVER['HTTP_HOST'], 0) . $_SERVER['REQUEST_URI']);    // redirect from example.com to www.example.com.
67    return;      if (strstr($_SERVER['HTTP_HOST'], 'www.')) // if its already www.example.com, take no action
68  }        return;
69        // otherwise pass permanently moved information into header and redirect to www.example.com
70        header('HTTP/1.1 301 Moved Permanently');
71        header('Location: '. $protocol .'://www.' . substr($_SERVER['HTTP_HOST'], 0) . request_uri());
72        return;
73      }
74  }  }
75    
76    /**
77     * Toggle WWW settings form.
78     */
79  function toggle_www_settings() {  function toggle_www_settings() {
80  $form = array();    $form = array();
81    
82    $form['toggle_www_settings'] = array(    $form['toggle_www_settings'] = array(
83      '#type' => 'fieldset',      '#type' => 'fieldset',
84        '#title' => t('Basic configuration'),
85      '#collapsed' => TRUE,      '#collapsed' => TRUE,
86    );    );
87    $form['toggle_www_settings']['toggle_www_method'] = array(    $form['toggle_www_settings']['toggle_www_method'] = array(
88      '#type' => 'radios',      '#type' => 'radios',
89      '#title' => t('Redirection criteria'),      '#title' => t('Redirection criteria'),
90      '#options' => array( t('Inactive - Module takes no action.'), t('No "www" - Redirect from <em>www.example.com</em> to <em>example.com</em>'), t('Always add "www" - Redirect from <em>example.com</em> to <em>www.example.com</em>')),      '#options' => array(
91          t('Disabled - Take no action.'),
92          t('No "www" - Redirect from <em>www.example.com</em> to <em>example.com</em>'),
93          t('Always add "www" - Redirect from <em>example.com</em> to <em>www.example.com</em>')
94        ),
95      '#default_value' => variable_get('toggle_www_method', 0),      '#default_value' => variable_get('toggle_www_method', 0),
96    );    );
97    
98  return $form;    return system_settings_form($form);
99  }  }
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