system.module 11.1 KB
Newer Older
Dries's avatar
 
Dries committed
1
<?php
2
// $Id$
Dries's avatar
 
Dries committed
3 4

function system_help() {
Dries's avatar
 
Dries committed
5
  $output .= "<p>Drupal comes with system-wide defaults but the setting-module provides control over many Drupal preferences, behaviors including visual and operational settings.</p>";
Dries's avatar
 
Dries committed
6 7
  $output .= "<h3>Cache</h3>". system_help_cache();
  $output .= "<h3>Cron</h3>". system_help_cron();
Dries's avatar
 
Dries committed
8 9 10 11
  return $output;
}

function system_help_cache() {
Dries's avatar
 
Dries committed
12 13 14
  $output .= "<p>Drupal has a caching mechanism that stores dynamically generated pages in a database.  By caching a page, Drupal does not have to generate the page each time it is requested.  Only pages requested by anonymous users are being cached.  When a cached page is accessed, Drupal will retrieve that page with minimal overhead using one SQL query only, thus reducing both the server load and the response time.</p>";
  $output .= "<p>Drupal's caching mechanism can be enabled and disabled by the site administrators from the 'settings' page.  He can also define how long cached pages should be kept.</p>";
  return $output;
Dries's avatar
 
Dries committed
15 16 17
}

function system_help_cron() {
Dries's avatar
 
Dries committed
18 19 20 21 22 23
  $output .= "<p>Some settings require a <i>cron</i> or <i>crontab</i>.  Cron, which stands for chronograph, is a periodic command scheduler: it executes commands at intervals specified in seconds.  It can be used to control the execution of daily, weekly and monthly jobs (or anything with a period of <i>n</i> seconds).   Automating tasks is one of the best ways to keep a system running smoothly, and if most of your administration does not require your direct involvement, cron is an ideal solution.</p>";
  $output .= "<p>Whenever <a href=\"". path_uri() ."cron.php\">". path_uri() ."cron.php</a> is accessed, cron will run: it checks for the jobs cron controls, and their periods in seconds.  If a certain task wasn't executed in the last n seconds, where n is the period of that job, it will be executed.  When all the executed commands terminate, cron is done.</p>";
  $output .= "<p>The recommended way to setup your cron system is to setup a Unix/Linux crontab that frequently visits <a href=\"". path_uri() ."cron.php\">". path_uri() ."cron.php</a>.  Note that cron does not guarantee the commands will be executed at the specified interval.  However, Drupal will try his best and run the crons as close to the specified intervals as possible.  The more you visit cron.php, the more accurate cron will be.</p>";
  $output .= "<p>If your hosting company does not allow you to setup crontabs, you can always ask someone else to setup a crontab for you. After all, virtually any Unix/Linux machine with access to the internet can setup a crontab to frequently visit <a href=\"". path_uri() ."cron.php\">". path_uri() ."cron.php</a>.</p>";
  $output .= "<p>For the Unix/Linux crontab itself, use a browser like <i>lynx</i> or <i>wget</i> but make sure the process terminates: either use <code>/usr/bin/lynx -source <?php echo path_uri(); ?>cron.php</code> or <code>/usr/bin/wget -O /dev/null <?php echo path_uri(); ?>cron.php</code>.  Take a look at the example scripts in the <code>scripts</code>-directory and make sure to adjust them to your needs.  A good crontab-line to run the cron-script once every hour would be: <pre>     00 * * * * /home/www/drupal/scripts/cron-lynx</pre></p>";
  return $output;
Dries's avatar
 
Dries committed
24 25 26
}

function system_perm() {
Dries's avatar
 
Dries committed
27
  return array("administer settings and filters", "access administration pages");
Dries's avatar
 
Dries committed
28 29 30
}

function system_link($type) {
Dries's avatar
 
Dries committed
31 32
  if ($type == "admin" && user_access("administer settings and filters")) {
    $links[] = "<a href=\"admin.php?mod=system\">settings and filters</a>";
Dries's avatar
 
Dries committed
33 34 35
  }

  return $links ? $links : array();
Dries's avatar
 
Dries committed
36 37 38 39 40
}

function system_view_options() {
  global $conf, $cmodes, $corder, $themes;
  // general settings:
Dries's avatar
 
Dries committed
41
  $output .= "<h3>General settings</h3>\n";
Dries's avatar
 
Dries committed
42
  $output .= form_textfield("Name", "site_name", variable_get("site_name", "drupal"), 55, 55, "The name of this website.");
Kjartan's avatar
Kjartan committed
43 44 45
  $output .= form_textfield("E-mail address", "site_mail", variable_get("site_mail", ini_get("sendmail_from")), 55, 128, "A valid e-mail address for this website, used by the auto-mailer during registration, new password requests, notifications, etc.");
  $output .= form_textfield("Slogan", "site_slogan", variable_get("site_slogan", ""), 55, 128, "The slogan of this website. Some themes display a slogan when available.");
  $output .= form_textarea("Mission", "site_mission", variable_get("site_mission", ""), 55, 5, "Your site's mission statement or focus. When enabled, this mission is listed at Drupal.org");
Dries's avatar
 
Dries committed
46 47
  $output .= form_textarea("Footer message", "site_footer", variable_get("site_footer", ""), 55, 5, "This text will be displayed at the bottom of each page.  Useful for adding a copyright notice to your pages.");
  $output .= form_textfield("Anonymous user", "anonymous", variable_get("anonymous", "Anonymous"), 55, 55, "The name used to indicate anonymous users.");
48
  foreach (module_list() as $name) { if (module_hook($name, "page")) $pages[$name] = $name; }
Kjartan's avatar
Kjartan committed
49 50
  $output .= form_select("Default front page", "site_frontpage", variable_get("site_frontpage", "node"), $pages, "The home page displays content from this module (usually <b>node</b>).");
  $output .= form_textarea("Extra front page PHP", "site_frontpage_extra", variable_get("site_frontpage_extra", ""), 55, 5, "Insert arbitrary PHP into the home page. This PHP executes via <b>eval()</b> after the page header but before the main page content.");
Dries's avatar
 
Dries committed
51
  $output .= "<hr />\n";
Dries's avatar
 
Dries committed
52

Dries's avatar
 
Dries committed
53
  // caching:
Dries's avatar
 
Dries committed
54
  $output .= "<h3>Cache settings</h3>\n";
Dries's avatar
 
Dries committed
55
  $period = array(10 => format_interval(10), 20 => format_interval(20), 30 => format_interval(30), 40 => format_interval(40), 50 => format_interval(50), 50 => format_interval(50), 60 => format_interval(60), 90 => format_interval(90), 120 => format_interval(120), 150 => format_interval(150), 180 => format_interval(180), 210 => format_interval(210), 240 => format_interval(240), 270 => format_interval(270), 300 => format_interval(300), 360 => format_interval(360), 420 => format_interval(420), 480 => format_interval(480), 540 => format_interval(540), 600 => format_interval(600), 1800 => format_interval(1800), 3600 => format_interval(3600), 7200 => format_interval(7200));
Dries's avatar
 
Dries committed
56 57
  $output .= form_select("Cache support", "cache", variable_get("cache", 0), array("Disabled", "Enabled"), "Enable or disable the caching of pages.");
  $output .= form_select("Discard cached pages older than", "cache_clear", variable_get("cache_clear", 30), $period, "The time cached pages should be kept.  Older pages are automatically refreshed.");
Dries's avatar
 
Dries committed
58
  $output .= "<hr />\n";
Dries's avatar
 
Dries committed
59

Dries's avatar
 
Dries committed
60
  // submission settings:
Dries's avatar
 
Dries committed
61
  $output .= "<h3>Submission settings</h3>\n";
Dries's avatar
 
Dries committed
62
  $rate = array(1 => "Maximum 1 every second", 5 => "Maximum 1 every 5 seconds", 15 => "Maximum 1 every 15 seconds", 30 => "Maximum 1 every 30 seconds", 60 => "Maximum 1 every minute", 300 => "Maximum 1 every 5 minutes", 900 => "Maximum 1 every 15 minutes", 1800 => "Maximum 1 every 30 minutes", 3600 => "Maximum 1 every hour", 21600 => "Maximum 1 every 6 hours", 43200 => "Maximum 1 every 12 hours");
Dries's avatar
 
Dries committed
63 64
  $output .= form_select("Maximum node rate", "max_node_rate", variable_get("max_node_rate", 900), $rate, "The maximum submission rate for nodes.  Its purpose is to stop potential abuse or denial of service attacks.");
  $output .= form_select("Maximum comment rate", "max_comment_rate", variable_get("max_comment_rate", 120), $rate, "The maximum submission rate for comments.  Its purpose is to stop potential abuse or denial of service attacks.");
Dries's avatar
 
Dries committed
65
  $output .= "<hr />\n";
Dries's avatar
 
Dries committed
66 67

  // comment settings:
Dries's avatar
 
Dries committed
68
  $output .= "<h3>Comment settings</h3>\n";
Dries's avatar
 
Dries committed
69 70 71
  $output .= form_select("Default display mode", "default_comment_mode", $conf[default_comment_mode], $cmodes, "The default mode in which comments are displayed.");
  $output .= form_select("Default display order", "default_comment_order", $conf[default_comment_order], $corder, "The default order in which comments are displayed.");
  for ($count = -1; $count < 6; $count++) $threshold[$count] = "Filter - $count";
Dries's avatar
 
Dries committed
72
  $output .= "<hr />\n";
Dries's avatar
 
Dries committed
73 74

  // layout settings:
Dries's avatar
 
Dries committed
75
  $output .= "<h3>Layout settings</h3>\n";
Dries's avatar
 
Dries committed
76
  foreach ($themes as $key=>$value) $options .= "<OPTION VALUE=\"$key\"". (variable_get("theme_default", key($themes)) == $key ? " SELECTED" : "") .">$key</OPTION>\n";
Dries's avatar
 
Dries committed
77
  $output .= form_item("Default theme", "<SELECT NAME=\"edit[theme_default]\">$options</SELECT>", "The default theme as seen by visitors or anonymous users.");
Dries's avatar
 
Dries committed
78
  $output .= "<hr />\n";
Dries's avatar
 
Dries committed
79 80

  // development settings:
Dries's avatar
 
Dries committed
81
  $output .= "<h3>Development settings</h3>\n";
Dries's avatar
 
Dries committed
82
  $output .= form_select("Display timer information", "dev_timer", variable_get("dev_timer", 0), array("Disabled", "Enabled"), "Display the time it took to generate a page.  For Drupal development only.");
Dries's avatar
 
Dries committed
83 84
  $output .= form_select("Display query log", "dev_query", variable_get("dev_query", 0), array("Disabled", "Enabled"), "Display a log of the database queries needed to generate the current page.");

Dries's avatar
 
Dries committed
85
  $output .= "<hr />\n";
Dries's avatar
 
Dries committed
86 87 88

  foreach (module_list() as $name) {
    if (module_hook($name, "conf_options")) {
89
      $output .= "<h3><a name=\"$name\">". ucfirst($name) ." settings</a></h3>". module_invoke($name, "conf_options") ."<hr />\n";
Dries's avatar
 
Dries committed
90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126
    }
  }
  return $output;
}

function system_view_filters() {
  foreach (module_list() as $name) {
    if (module_hook($name, "conf_filters")) {
      $output .= module_invoke($name, "conf_filters");
    }
  }
  return $output;
}

function system_save($edit = array()) {
  foreach ($edit as $name=>$value) variable_set($name, $value);
  return "the configuration options have been saved.";
}

function system_default($edit = array()) {
  foreach ($edit as $name=>$value) variable_del($name);
  return "the configuration options have been reset to their default values.";
}

function system_view($type) {

  switch ($type) {
    case "filter":
      $form = system_view_filters();
      break;
    default:
      $form = system_view_options();
  }

  $form .= form_submit("Save configuration");
  $form .= form_submit("Reset to defaults");

Dries's avatar
 
Dries committed
127
  return form($form);
Dries's avatar
 
Dries committed
128 129 130
}

function system_modules() {
Dries's avatar
 
Dries committed
131 132
  $output .= "<table border=\"1\" cellpadding=\"2\" cellspacing=\"2\">\n";
  $output .= " <tr><th>module</th><th colspan=\"2\">operations</th></tr>\n";
Dries's avatar
 
Dries committed
133
  foreach (module_list() as $name) {
Dries's avatar
 
Dries committed
134
    $output .= " <tr><td>$name</td><td>". (module_hook($name, "page") ? "<a href=\"module.php?mod=$name\">view</a>" : "&nbsp;") ."</td><td>". (module_hook($name, "admin") ? "<a href=\"admin.php?mod=$name\">admin</a>" : "&nbsp;") ."</td></tr>\n";
Dries's avatar
 
Dries committed
135
  }
Dries's avatar
 
Dries committed
136
  $output .= "</table>\n";
Dries's avatar
 
Dries committed
137 138 139 140 141

  return $output;
}

function system_admin() {
Dries's avatar
 
Dries committed
142
  global $edit, $op, $type;
Dries's avatar
 
Dries committed
143

Dries's avatar
 
Dries committed
144
  if (user_access("administer settings and filters")) {
Dries's avatar
 
Dries committed
145

Dries's avatar
 
Dries committed
146
    print "<small><a href=\"admin.php?mod=system&type=options\">site settings</a> | <a href=\"admin.php?mod=system&type=filter\">content filters</a> | <a href=\"admin.php?mod=system&op=modules\">modules</a> | <a href=\"admin.php?mod=system&op=help\">help</a></small><hr />\n";
Dries's avatar
 
Dries committed
147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170

    switch ($op) {
      case "help":
        system_help();
        break;
      case "modules":
        print system_modules();
        break;
      case "Reset to defaults":
        print status(system_default($edit));
        print system_view($type);
        break;
      case "Save configuration":
        print status(system_save($edit));
        print system_view($type);
        break;
      default:
        print system_view($type);
    }
  }
  else {
    print message_access();
  }
}
Dries's avatar
 
Dries committed
171

Dries's avatar
 
Dries committed
172
?>