system.module 16.6 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){
Dries's avatar
   
Dries committed
12
  $system["description"] = t("Configuration system that lets administrators 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
  $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>";
Dries's avatar
   
Dries committed
18
  $output .= "<p>Drupal's caching mechanism can be enabled and disabled by the site administrators from the 'settings' page.  Site administrators can also define how long cached pages should be kept.</p>";
Dries's avatar
   
Dries committed
19
  return $output;
Dries's avatar
   
Dries committed
20
21
22
}

function system_help_cron() {
Dries's avatar
   
Dries committed
23
24
25
26
  $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>";
Dries's avatar
   
Dries committed
27
  $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.sh</pre>Note that it is essential to access <code>cron.php</code> using a browser; don't run it using command line PHP and avoid using <code>localhost</code> or <code>127.0.0.1</code>, or some features won't work as expected.  For all the environment variables to be correct; use a browser to access <code>cron.php</code> on a publicly accessible domain.</p>";
Dries's avatar
   
Dries committed
28
  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", "create php content");
Dries's avatar
   
Dries committed
33
34
35
}

function system_link($type) {
Dries's avatar
   
Dries committed
36
  if ($type == "admin" && user_access("administer site configuration")) {
Dries's avatar
   
Dries committed
37
    menu_add("site configuration", url("admin/system"), "Site configuration.", NULL, NULL, 2);
Dries's avatar
   
Dries committed
38
39
40
41
42
     menu_add("module selector", url("admin/system/modules/selector"), "Module selector.", NULL, "site configuration", 1);
     menu_add("module settings", url("admin/system/modules/settings"), "Site settings.", NULL, "site configuration", 2);
     menu_add("theme selector", url("admin/system/themes/selector"), "Theme selector.", NULL, "site configuration", 3);
     // menu_add("theme settings", url("admin/system/themes/settings"), "Theme selector.", NULL, "site configuration", 4);
     menu_add("content filters", url("admin/system/filters"), "Content filters.", NULL, "site configuration", 5);
Dries's avatar
   
Dries committed
43
     menu_add("help", url("admin/system/help"), "Help.", NULL, "site configuration", 9);
Dries's avatar
   
Dries committed
44
  }
Dries's avatar
 
Dries committed
45
46
}

Dries's avatar
   
Dries committed
47
function system_view_modules() {
48
  global $conf, $cmodes, $corder;
Dries's avatar
   
Dries committed
49

Dries's avatar
 
Dries committed
50
  // general settings:
Dries's avatar
   
Dries committed
51
52
53
54
55
56
57
  $output .= "<h3>" . t("General settings") . "</h3>\n";
  $output .= form_textfield(t("Name"), "site_name", variable_get("site_name", "drupal"), 55, 55, t("The name of this website."));
  $output .= form_textfield(t("E-mail address"), "site_mail", variable_get("site_mail", ini_get("sendmail_from")), 55, 128, t("A valid e-mail address for this website, used by the auto-mailer during registration, new password requests, notifications, etc."));
  $output .= form_textfield(t("Slogan"), "site_slogan", variable_get("site_slogan", ""), 55, 128, t("The slogan of this website. Some themes display a slogan when available."));
  $output .= form_textarea(t("Mission"), "site_mission", variable_get("site_mission", ""), 55, 5, t("Your site's mission statement or focus."));
  $output .= form_textarea(t("Footer message"), "site_footer", variable_get("site_footer", ""), 55, 5, t("This text will be displayed at the bottom of each page.  Useful for adding a copyright notice to your pages."));
  $output .= form_textfield(t("Anonymous user"), "anonymous", variable_get("anonymous", "Anonymous"), 55, 55, t("The name used to indicate anonymous users."));
58
  foreach (module_list() as $name) { if (module_hook($name, "page")) $pages[$name] = $name; }
Dries's avatar
   
Dries committed
59
  $output .= form_select(t("Default front page"), "site_frontpage", variable_get("site_frontpage", "node"), $pages, t("The home page displays content from this module (usually node)."));
Dries's avatar
   
Dries committed
60
  $output .= "<hr />\n";
Dries's avatar
 
Dries committed
61

Dries's avatar
   
Dries committed
62
  // caching:
Dries's avatar
   
Dries committed
63
  $output .= "<h3>" . t("Cache settings") . "</h3>\n";
Dries's avatar
   
Dries committed
64
  $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
65
  $output .= form_select(t("Cache support"), "cache", variable_get("cache", 0), array(t("Disabled"), t("Enabled")), t("Enable or disable the caching of pages."));
Dries's avatar
   
Dries committed
66
  $output .= form_select(t("Discard cached pages older than"), "cache_clear", variable_get("cache_clear", 120), $period, t("The time cached pages should be kept.  Older pages are automatically refreshed."));
Dries's avatar
   
Dries committed
67
  $output .= "<hr />\n";
Dries's avatar
   
Dries committed
68

Dries's avatar
 
Dries committed
69
  // submission settings:
Dries's avatar
   
Dries committed
70
  $output .= "<h3>" . t("Submission settings") . "</h3>\n";
Dries's avatar
   
Dries committed
71
  $rate = array(-10000 => "Disabled", 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
72
73
  $output .= form_select(t("Maximum node rate"), "max_node_rate", variable_get("max_node_rate", 900), $rate, t("The maximum submission rate for nodes.  Its purpose is to stop potential abuse or denial of service attacks."));
  $output .= form_select(t("Maximum comment rate"), "max_comment_rate", variable_get("max_comment_rate", 120), $rate, t("The maximum submission rate for comments.  Its purpose is to stop potential abuse or denial of service attacks."));
Dries's avatar
   
Dries committed
74
  $output .= "<hr />\n";
Dries's avatar
 
Dries committed
75

Dries's avatar
   
Dries committed
76
  // date settings:
Dries's avatar
   
Dries committed
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
  $output .= "<h3>" . t("Date format settings") . "</h3>\n";

  // date settings: possible date formats
  $dateshort = array("m/d/Y - H:i", "d/m/Y - H:i", "Y/m/d - H:i",
           "m/d/Y - g:ia", "d/m/Y - g:ia", "Y/m/d - g:ia",
           "M j Y - H:i", "j M Y - H:i", "Y M j - H:i",
           "M j Y - g:ia", "j M Y - g:ia", "Y M j - g:ia");
  $datemedium = array("D, m/d/Y - H:i", "D, d/m/Y - H:i", "D, Y/m/d - H:i",
          "F j, Y - H:i", "j F, Y - H:i", "Y, F j - H:i",
          "D, m/d/Y - g:ia", "D, d/m/Y - g:ia", "D, Y/m/d - g:ia",
          "F j, Y - g:ia", "j F, Y - g:ia", "Y, F j - g:ia");
  $datelong = array("l, F j, Y - H:i", "l, j F, Y - H:i", "l, Y,  F j - H:i",
        "l, F j, Y - g:ia", "l, j F, Y - g:ia", "l, Y,  F j - g:ia");

  // date settings: construct choices for user
  foreach ($dateshort as $f) {
    $dateshortchoices[$f] = format_date(time(),"custom",$f);
  }
  foreach ($datemedium as $f) {
    $datemediumchoices[$f] = format_date(time(),"custom",$f);
  }
  foreach ($datelong as $f) {
    $datelongchoices[$f] = format_date(time(),"custom",$f);
  }

  $output .= form_select(t("Date format (short)"), "date_format_short", variable_get("date_format_short", $dateshort[0]), $dateshortchoices, t("The short format of date display."));
  $output .= form_select(t("Date format (medium)"), "date_format_medium", variable_get("date_format_medium", $datemedium[0]), $datemediumchoices,t("The medium sized date display."));
  $output .= form_select(t("Date format (long)"), "date_format_long", variable_get("date_format_long", $datelong[0]), $datelongchoices, t("Longer date format used for detailed display."));
Dries's avatar
   
Dries committed
105
106
  $output .= "<hr />\n";

Dries's avatar
 
Dries committed
107
  // layout settings:
Dries's avatar
   
Dries committed
108
  $output .= "<h3>" . t("Layout settings") . "</h3>\n";
109
  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
110
  $output .= form_item(t("Default theme"), "<select name=\"edit[theme_default]\">$options</select>", t("The default theme as seen by visitors or anonymous users."));
Dries's avatar
   
Dries committed
111
  $output .= "<hr />\n";
Dries's avatar
 
Dries committed
112
113
114

  foreach (module_list() as $name) {
    if (module_hook($name, "conf_options")) {
Dries's avatar
   
Dries committed
115
      $output .= "<h3><a name=\"$name\">". ucfirst(t("$name")) ." " . t("settings") . "</a></h3>". module_invoke($name, "conf_options") ."<hr />\n";
Dries's avatar
 
Dries committed
116
117
    }
  }
Dries's avatar
   
Dries committed
118
119
120
121
122
123
124
125
126
127
128

  return $output;
}

function system_view_themes() {
  foreach (theme_list() as $name) {
    if (module_hook($name, "conf_options")) {
      $output .= "<h3><a name=\"$name\">". ucfirst(t("$name")) ." " . t("settings") . "</a></h3>". module_invoke($name, "conf_options") ."<hr />\n";
    }
  }

Dries's avatar
 
Dries committed
129
130
131
132
133
134
135
136
137
138
139
140
  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;
}

Dries's avatar
   
Dries committed
141
function system_save_settings($edit = array()) {
Dries's avatar
   
Dries committed
142
143
144
145
  foreach ($edit as $name => $value) {
    variable_set($name, $value);
  }

Dries's avatar
   
Dries committed
146
147
148
149
150
151
152
153
154
155
156
157
158
  cache_clear_all();

  return t("the configuration options have been saved.");
}

function system_save_selector($type, $edit = array()) {
  db_query("UPDATE system SET status = '0' WHERE type = '%s'", $type);
  foreach ($edit["status"] as $filename => $status) {
    db_query("UPDATE system SET status = '%d' WHERE filename = '$filename'", $status);
  }

  cache_clear_all();

Dries's avatar
   
Dries committed
159
  return t("the configuration options have been saved.");
Dries's avatar
 
Dries committed
160
161
}

Dries's avatar
   
Dries committed
162
function system_reset_default($edit = array()) {
Dries's avatar
   
Dries committed
163
164
165
166
  foreach ($edit as $name => $value) {
    variable_del($name);
  }

Dries's avatar
   
Dries committed
167
168
  cache_clear_all();

Dries's avatar
   
Dries committed
169
  return t("the configuration options have been reset to their default values.");
Dries's avatar
 
Dries committed
170
171
172
173
}

function system_view($type) {

Dries's avatar
   
Dries committed
174
175
  $links = array();

Dries's avatar
 
Dries committed
176
  switch ($type) {
Dries's avatar
   
Dries committed
177
    case "filters":
Dries's avatar
 
Dries committed
178
179
      $form = system_view_filters();
      break;
Dries's avatar
   
Dries committed
180
181
182
    case "themes":
     $form = system_view_themes();
      break;
Dries's avatar
 
Dries committed
183
    default:
Dries's avatar
   
Dries committed
184
185
      foreach (module_list() as $name) {
        if (module_hook($name, "conf_options")) {
Dries's avatar
   
Dries committed
186
          $links[] = "<a href=\"#$name\">". t("$name") ."</a>";
Dries's avatar
   
Dries committed
187
188
        }
      }
Dries's avatar
   
Dries committed
189
      $form = system_view_modules();
Dries's avatar
 
Dries committed
190
191
  }

Dries's avatar
   
Dries committed
192
193
  $form .= form_submit(t("Save configuration"));
  $form .= form_submit(t("Reset to defaults"));
Dries's avatar
 
Dries committed
194

Dries's avatar
   
Dries committed
195
  print implode(" &middot; ", $links) ."<br />". form($form);
Dries's avatar
 
Dries committed
196
197
}

Dries's avatar
   
Dries committed
198
199
200
function system_dirscan($dir, $mask, $nomask = array(".", "..", "CVS")) {
  $files = array();
  if (is_dir($dir) && $handle = opendir($dir)) {
201
    while ($file = readdir($handle)) {
Dries's avatar
   
Dries committed
202
203
204
205
206
207
208
209
210
      if (!in_array($file, $nomask)) {
        if (is_dir("$dir/$file")) {
          $files = array_merge($files, system_dirscan("$dir/$file", $mask, $nomask));
        }
        elseif (ereg($mask, $file)) {
          $name = basename($file);
          $files["$dir/$file"]->filename = "$dir/$file";
          $files["$dir/$file"]->name = substr($name, 0, strrpos($name, '.'));
        }
211
212
213
214
      }
    }
    closedir($handle);
  }
Dries's avatar
   
Dries committed
215
216
  return $files;
}
217

Dries's avatar
   
Dries committed
218
219
220
function system_listing($type, $directory, $required = array()) {
  // Make sure we set $type correctly
  $type = $type != 'theme' ? "module" : "theme";
Dries's avatar
   
Dries committed
221

Dries's avatar
   
Dries committed
222
223
  // Find files in the directory.
  $files = system_dirscan($directory, "\.$type$");
224

Dries's avatar
   
Dries committed
225
226
227
228
229
230
231
  // Extract current files from database.
  $result = db_query("SELECT filename, type, status FROM system WHERE type = '%s'", $type);
  while ($file = db_fetch_object($result)) {
    if (is_object($files[$file->filename])) {
      foreach ($file as $key => $value) {
        $files[$file->filename]->$key = $value;
      }
232
    }
Dries's avatar
 
Dries committed
233
234
  }

Dries's avatar
   
Dries committed
235
  ksort($files);
236

Dries's avatar
   
Dries committed
237
  $header = array(t("name"), t("description"), t("status"));
Dries's avatar
   
Dries committed
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253

  foreach ($files as $filename => $file) {
    include_once($filename);
    if ($type == "module") {
      $info->name = module_invoke($file->name, "system", "name") ? module_invoke($file->name, "system", "name") : $file->name;
      $info->description = module_invoke($file->name, "system", "description");
    }
    elseif ($type == "theme") {
      $class = "Theme_$file->name";
      if (class_exists($class)) {
        $theme =& new $class;
        $info->name = $theme->system("name") ? $theme->system("name") : $file->name;
        $info->description = $theme->system("description");
      }
      else {
        unset($files[$filename]);
254
255
256
      }
    }

Dries's avatar
   
Dries committed
257
    // Update the contents of the system table:
258
    db_query("DELETE FROM system WHERE filename = '%s' AND type = '%s'", $filename, $type);
Dries's avatar
   
Dries committed
259
    db_query("INSERT INTO system (name, description, type, filename, status) VALUES ('%s', '%s', '%s', '%s', %d)", $info->name, $info->description, $type, $filename, $file->status);
260

Dries's avatar
   
Dries committed
261
    $rows[] = array($info->name, $info->description, array("data" => (in_array($filename, $required) ? form_hidden("status][$filename", 1) . t("required") : form_checkbox("", "status][$filename", 1, $file->status)), "align" => "center"));
262
  }
Dries's avatar
   
Dries committed
263
264

  $output = table($header, $rows) . form_submit(t("Save $type settings"));
265

Dries's avatar
   
Dries committed
266
267
268
  print form($output);

  return $message;
Dries's avatar
 
Dries committed
269
270
271
}

function system_admin() {
Dries's avatar
   
Dries committed
272
  global $op, $edit;
Dries's avatar
 
Dries committed
273

Dries's avatar
   
Dries committed
274
  if (user_access("administer site configuration")) {
Dries's avatar
   
Dries committed
275
276
277
278

    // NOTE: changing this also requires changing module_init() @ "includes/module.inc".
    $required = array("modules/admin.module", "modules/user.module", "modules/system.module", "modules/watchdog.module");

Dries's avatar
   
Dries committed
279
280
281
282
    if (empty($op)) {
      $op = arg(2);
    }

Dries's avatar
 
Dries committed
283
284
    switch ($op) {
      case "help":
Dries's avatar
   
Dries committed
285
        print system_help();
Dries's avatar
 
Dries committed
286
287
        break;
      case "modules":
Dries's avatar
   
Dries committed
288
        if (arg(3) == "settings") {
Dries's avatar
   
Dries committed
289
          print system_view("modules");
290
        }
Dries's avatar
   
Dries committed
291
        else {
Dries's avatar
   
Dries committed
292
          print system_listing("module", "modules", $required);
Dries's avatar
   
Dries committed
293
294
        }
        break;
295
      case "themes":
Dries's avatar
   
Dries committed
296
        if (arg(3) == "settings") {
Dries's avatar
   
Dries committed
297
          print system_view("themes");
Dries's avatar
   
Dries committed
298
299
        }
        else {
Dries's avatar
   
Dries committed
300
          print system_listing("theme", "themes");
Dries's avatar
   
Dries committed
301
        }
302
        break;
Dries's avatar
   
Dries committed
303
304
305
306
307
308
309
310
      case t("Save module settings"):
        print status(system_save_selector("module", $edit));
        print system_listing("module", "modules", $required);
        break;
      case t("Save theme settings"):
        print status(system_save_selector("theme", $edit));
        print system_listing("theme", "themes");
        break;
Dries's avatar
   
Dries committed
311
      case t("Reset to defaults"):
Dries's avatar
   
Dries committed
312
        print status(system_reset_default($edit));
Dries's avatar
   
Dries committed
313
        print system_view(arg(2));
Dries's avatar
 
Dries committed
314
        break;
Dries's avatar
   
Dries committed
315
      case t("Save configuration"):
Dries's avatar
   
Dries committed
316
        print status(system_save_settings($edit));
Dries's avatar
   
Dries committed
317
        print system_view(arg(2));
Dries's avatar
 
Dries committed
318
319
        break;
      default:
Dries's avatar
   
Dries committed
320
        print system_view(arg(2));
Dries's avatar
 
Dries committed
321
322
323
324
325
326
    }
  }
  else {
    print message_access();
  }
}
Dries's avatar
   
Dries committed
327

Dries's avatar
   
Dries committed
328
?>