system.module 16 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
  return $output;
}

11
function system_system($field){
Kjartan's avatar
Kjartan committed
12
  $system["description"] = t("Configuration system that lets site admins modify the workings of the site.");
13 14 15
  return $system[$field];
}

Dries's avatar
 
Dries committed
16
function system_help_cache() {
Dries's avatar
 
Dries committed
17 18 19
  $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
20 21 22
}

function system_help_cron() {
Dries's avatar
 
Dries committed
23 24 25 26 27 28
  $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
29 30 31
}

function system_perm() {
Dries's avatar
 
Dries committed
32
  return array("administer site configuration", "access administration pages");
Dries's avatar
 
Dries committed
33 34 35
}

function system_link($type) {
Dries's avatar
 
Dries committed
36 37
  if ($type == "admin" && user_access("administer site configuration")) {
    $links[] = la(t("site configuration"), array("mod" => "system"));
Dries's avatar
 
Dries committed
38 39 40
  }

  return $links ? $links : array();
Dries's avatar
 
Dries committed
41 42 43
}

function system_view_options() {
44
  global $conf, $cmodes, $corder;
Dries's avatar
 
Dries committed
45

Dries's avatar
 
Dries committed
46
  // general settings:
Dries's avatar
 
Dries committed
47
  $output .= "<h3>General settings</h3>\n";
Dries's avatar
 
Dries committed
48
  $output .= form_textfield("Name", "site_name", variable_get("site_name", "drupal"), 55, 55, "The name of this website.");
Kjartan's avatar
Kjartan committed
49 50
  $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.");
Dries's avatar
 
Dries committed
51
  $output .= form_textarea("Mission", "site_mission", variable_get("site_mission", ""), 55, 5, "Your site's mission statement or focus.");
Dries's avatar
 
Dries committed
52 53
  $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.");
54
  foreach (module_list() as $name) { if (module_hook($name, "page")) $pages[$name] = $name; }
Kjartan's avatar
Kjartan committed
55
  $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>).");
Dries's avatar
 
Dries committed
56
  $output .= "<hr />\n";
Dries's avatar
 
Dries committed
57

Dries's avatar
 
Dries committed
58
  // caching:
Dries's avatar
 
Dries committed
59
  $output .= "<h3>Cache settings</h3>\n";
Dries's avatar
 
Dries committed
60
  $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
61 62
  $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
63
  $output .= "<hr />\n";
Dries's avatar
 
Dries committed
64

Dries's avatar
 
Dries committed
65
  // submission settings:
Dries's avatar
 
Dries committed
66
  $output .= "<h3>Submission settings</h3>\n";
Dries's avatar
 
Dries committed
67
  $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
68 69
  $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
70
  $output .= "<hr />\n";
Dries's avatar
 
Dries committed
71

Dries's avatar
 
Dries committed
72 73 74 75 76
  // date settings:
  $output .= "<h3>Date format setting</h3>\n";
  $output .= form_select("Date format", "date_format", variable_get("date_format", "m/d/Y - H:i"), array("m/d/Y - H:i" => "m/d/Y - H:i", "d/m/Y - H:i" => "d/m/Y - H:i", "Y/m/d - H:i" => "Y/m/d - H:i"), "The format in which dates are displayed");
  $output .= "<hr />\n";

Dries's avatar
 
Dries committed
77
  // layout settings:
Dries's avatar
 
Dries committed
78
  $output .= "<h3>Layout settings</h3>\n";
79
  foreach (theme_list() as $key => $value) $options .= "<option value=\"$key\"". (variable_get("theme_default", 0) == $key ? " selected=\"selected\"" : "") .">$key</option>\n";
Dries's avatar
 
Dries committed
80
  $output .= form_item("Default theme", "<select name=\"edit[theme_default]\">$options</select>", "The default theme as seen by visitors or anonymous users.");
Dries's avatar
 
Dries committed
81
  $output .= "<hr />\n";
Dries's avatar
 
Dries committed
82 83

  // development settings:
Dries's avatar
 
Dries committed
84
  $output .= "<h3>Development settings</h3>\n";
Dries's avatar
 
Dries committed
85
  $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
86 87
  $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
88
  $output .= "<hr />\n";
Dries's avatar
 
Dries committed
89 90 91

  foreach (module_list() as $name) {
    if (module_hook($name, "conf_options")) {
92
      $output .= "<h3><a name=\"$name\">". ucfirst($name) ." settings</a></h3>". module_invoke($name, "conf_options") ."<hr />\n";
Dries's avatar
 
Dries committed
93 94 95 96 97 98 99 100 101 102 103 104 105 106 107
    }
  }
  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($edit = array()) {
108
  foreach ($edit as $name => $value) variable_set($name, $value);
Dries's avatar
 
Dries committed
109 110 111 112
  return "the configuration options have been saved.";
}

function system_default($edit = array()) {
113
  foreach ($edit as $name => $value) variable_del($name);
Dries's avatar
 
Dries committed
114 115 116 117 118 119 120 121 122 123
  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:
Dries's avatar
 
Dries committed
124 125 126 127 128 129
      foreach (module_list() as $name) {
        if (module_hook($name, "conf_options")) {
          $links[] = la($name, array("mod" => "system"), $name);
        }
      }

130
      $output = "<small>". implode(" :: ", $links) ."</small><hr />";
Dries's avatar
 
Dries committed
131 132 133 134 135 136
      $form = system_view_options();
  }

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

137
  return $output . form($form);
Dries's avatar
 
Dries committed
138 139
}

140 141 142 143 144 145 146
/**
* Module configuration
*
* @author Kjartan Mannes
* @group system.module
* @return string module list
*/
Dries's avatar
 
Dries committed
147
function system_modules() {
148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166
  $result = db_query("SELECT name, status FROM system WHERE type = 'module'");
  $status = array();
  while ($module = db_fetch_object($result)) {
    $status[$module->name] = $module->status;
  }

  if ($handle = @opendir("modules")) {
    $modules = array();
    while ($file = readdir($handle)) {
      if (".module" == substr($file, -7)) {
        $name = substr($file, 0, -7);
        $modules[$name] = array("filename" => "$file", "status" => $status[$name]);
       include_once("modules/$file");
      }
    }
    closedir($handle);
    asort($modules);
  }

Dries's avatar
 
Dries committed
167 168
  db_query("DELETE FROM system WHERE type = 'module'");

Dries's avatar
 
Dries committed
169
  $required = array("user", "system", "watchdog");
170

Dries's avatar
 
Dries committed
171
  $output .= "<table border=\"1\" cellpadding=\"2\" cellspacing=\"2\">\n";
Dries's avatar
 
Dries committed
172
  $output .= "<tr><th>module</th><th>description</th><th>status</th><th colspan=\"2\">operations</th></tr>\n";
173
  foreach ($modules as $name => $module) {
174 175 176
    $output .= "<tr>";
    $output .= "<td>$name</td>";
    $output .= "<td>". check_output(module_invoke($name, "system", "description")) ."</td>";
Dries's avatar
 
Dries committed
177
    $output .= "<td align=\"center\">". (in_array($name, $required) ? "required" : form_checkbox("", "status][$name", 1, $module["status"])) ."</td>";
Dries's avatar
 
Dries committed
178 179 180
    $output .= "<td>". (module_hook($name, "page") ? $module["status"] || in_array($name, $required) ? lm(t("view"), array("mod" => $name)) : t("view") : "&nbsp;") ."</td>";
    $output .= "<td>". (module_hook($name, "admin") ? $module["status"] || in_array($name, $required) ? la(t("admin"), array("mod" => $name)) : t("admin")  : "&nbsp;") ."</td>";
//  $output .= "<td>". (module_hook($name, "help") ? $module["status"]   || in_array($name, $required) ? la(t("help"), array("mod" => $name, "op" => "help")) : t("help")  : "&nbsp;") ."</td>";
181
    $output .= "</tr>\n";
182
    if (!in_array($name, $required)) {
Dries's avatar
 
Dries committed
183
      db_query("INSERT INTO system (name, type, filename, status) VALUES ('%s', 'module', '%s', '%s')", $name, $module["filename"], $module["status"]);
184
    }
Dries's avatar
 
Dries committed
185
  }
186 187
  $output .= "</table><br />\n";
  $output .= form_submit("Save module settings");
Dries's avatar
 
Dries committed
188

189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244
  return form($output);
}

/**
* Theme configuration
*
* This function handles the Drupal themes and lets the site administrator enable or disable them as they wish.
*
* @author Kjartan Mannes
* @package system.module
* @return string theme list
*/
function system_themes() {
  $result = db_query("SELECT * FROM system WHERE type = 'theme' ORDER BY filename");
  $status = array();
  while ($theme = db_fetch_object($result)) {
    $_themes[$theme->name] = $theme;
  }

  if ($handle = @opendir("themes")) {
    $themes = array();
    while ($dir = readdir($handle)) {
      if (!substr_count($dir, ".") && is_dir("themes/$dir")) {
        if ($handle2 = @opendir("themes/$dir")) {
          while ($file = readdir($handle2)) {
            if (".theme" == substr($file, -6)) {
              include_once("themes/$dir/$file");
              $name = substr($file, 0, -6);
              $_theme = "theme_$name";
              if (class_exists($_theme)) {
                $_theme =& new $_theme;
                $_themes[$name]->filename = "themes/$dir/$file";
                if (method_exists($_theme, "system")) {
                  $_themes[$name]->displayname = $_theme->system("name");
                  $_themes[$name]->author = $_theme->system("author");
                  if (empty($_themes[$name]->description)) {
                    $_themes[$name]->description = $_theme->system("description");
                  }
                }

                $themes[$name] = $_themes[$name];
                unset($_theme);
              }
            }
          }
          closedir($handle2);
        }
      }
    }
    closedir($handle);
    asort($themes);
  }

  db_query("DELETE FROM system WHERE type = 'theme'");

  $output .= "<table border=\"1\" cellpadding=\"2\" cellspacing=\"2\">\n";
245
  $output .= "<tr><th>theme</th><th>name</th><th>description</th><th>author</th><th>enabled</th></tr>\n";
246
  foreach ($themes as $name => $theme) {
247 248 249 250 251 252 253
    $output .= "<tr>";
    $output .= "<td>$name</td>";
    $output .= "<td>$theme->displayname</td>";
    $output .= "<td>". form_textfield("", "$name][description", $theme->description, 40, 255)."</td>";
    $output .= "<td>$theme->author</td>";
    $output .= "<td align=\"center\">". form_checkbox("", "$name][status", 1, $theme->status) ."</td>";
    $output .= "</tr>\n";
Dries's avatar
 
Dries committed
254
    db_query("INSERT INTO system (name, type, filename, status, description) VALUES ('%s', 'theme', '%s', '%s', '%s')", $name, $theme->filename, $theme->status, $theme->description);
255 256 257 258 259
  }
  $output .= "</table><br />\n";
  $output .= form_submit("Save theme settings");

  return form($output);
Dries's avatar
 
Dries committed
260 261 262
}

function system_admin() {
Dries's avatar
 
Dries committed
263
  global $edit, $op, $type;
Dries's avatar
 
Dries committed
264
  if (user_access("administer site configuration")) {
Dries's avatar
 
Dries committed
265

Dries's avatar
 
Dries committed
266
    print "<small>". la(t("site settings"), array("mod" => "system", "type" => "options")) ." - ". la(t("content filters"), array("mod" => "system", "type" => "filter")) ." - ". la(t("modules"), array("mod" => "system", "op" => "modules")) ." - ". la(t("themes"), array("mod" => "system", "op" => "themes")) ." - ". la(t("help"), array("mod" => "system", "op" => "help")) ."</small><hr />\n";
Dries's avatar
 
Dries committed
267 268 269

    switch ($op) {
      case "help":
Dries's avatar
 
Dries committed
270
        print system_help();
Dries's avatar
 
Dries committed
271
        break;
272
      case "Save module settings":
273
        db_query("UPDATE system SET status = '0' WHERE type = 'module'");
274 275 276
        foreach ($edit["status"] as $name => $status) {
          db_query("UPDATE system SET status = '$status' WHERE name = '$name'");
        }
Dries's avatar
 
Dries committed
277 278 279
      case "modules":
        print system_modules();
        break;
280
      case "Save theme settings":
281
        db_query("UPDATE system SET status = '0' WHERE type = 'theme'");
282
        foreach ($edit as $name => $settings) {
Dries's avatar
 
Dries committed
283
          db_query("UPDATE system SET status = '%s', description = '%s' WHERE name = '$name'", $settings["status"], $settings["description"]);
284 285 286 287
        }
      case "themes":
        print system_themes();
        break;
Dries's avatar
 
Dries committed
288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303
      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
304

Dries's avatar
 
Dries committed
305
?>