common.inc 24.5 KB
Newer Older
Dries's avatar
   
Dries committed
1
2
3
4
<?php
// $Id$

function conf_init() {
Dries's avatar
   
Dries committed
5
  global $HTTP_HOST, $PHP_SELF;
Dries's avatar
   
Dries committed
6
7
8
9
10
11
12

  /*
  ** Try finding a matching configuration file by stripping the website's
  ** URI from left to right.  If no configuration file is found, return a
  ** default value 'conf'.
  */

Dries's avatar
   
Dries committed
13
14
15
  $uri = $PHP_SELF;

  $file = strtolower(strtr($HTTP_HOST . substr($uri, 0, strrpos($uri, "/")), "/:", ".."));
Dries's avatar
   
Dries committed
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

  while (strlen($file) > 4) {
    if (file_exists("includes/$file.php")) {
      return $file;
    }
    else {
      $file = substr($file, strpos($file, ".") + 1);
    }
  }

  return "conf";
}

function error_handler($errno, $message, $filename, $line, $variables) {
  $types = array(1 => "error", 2 => "warning", 4 => "parse error", 8 => "notice", 16 => "core error", 32 => "core warning", 64 => "compile error", 128 => "compile warning", 256 => "user error", 512 => "user warning", 1024 => "user notice");
  $entry = $types[$errno] .": $message in $filename on line $line.";
Dries's avatar
   
Dries committed
32
  if (($errno == 1 || $errno == 2 || $errno == 4 || $errno == 256) && error_reporting()) {
Dries's avatar
   
Dries committed
33
    watchdog("error", $types[$errno] .": $message in $filename on line $line.");
34
    print "<pre>$entry</pre>";
Dries's avatar
   
Dries committed
35
36
37
  }
}

Dries's avatar
   
Dries committed
38
function watchdog($type, $message, $link = NULL) {
Dries's avatar
   
Dries committed
39
  global $user;
Dries's avatar
Dries committed
40
  db_query("INSERT INTO watchdog (uid, type, message, link, location, hostname, timestamp) VALUES ('%d', '%s', '%s', '%s', '%s', '%s', '%s')", $user->uid, $type, $message, $link, request_uri(), getenv("REMOTE_ADDR"), time());
Dries's avatar
   
Dries committed
41
42
43
44
45
46
47
48
49
50
51
52
53
54
}

function throttle($type, $rate) {
  if (!user_access("access administration pages")) {
    if ($throttle = db_fetch_object(db_query("SELECT * FROM watchdog WHERE type = '$type' AND hostname = '". getenv("REMOTE_ADDR") ."' AND ". time() ." - timestamp < $rate"))) {
      watchdog("warning", "throttle: '". getenv("REMOTE_ADDR") ."' exceeded submission rate - $throttle->type");
      die(message_throttle());
    }
    else {
      watchdog($type, "throttle");
    }
  }
}

Dries's avatar
   
Dries committed
55
56
function check_php_setting($name, $value) {
  if (ini_get($name) != $value) {
Steven Wittens's avatar
Steven Wittens committed
57
    print "<p>Note that the value of PHP's configuration option <code><b>$name</b></code> is incorrect.  It should be set to '$value' for Drupal to work properly.  Either configure your webserver to support <code>.htaccess</code> files so Drupal's <code>.htaccess</code> file can set it to the proper value, or edit your <code>php.ini</code> file directly.  This message will automatically dissapear when the problem has been fixed.</p>";
Dries's avatar
   
Dries committed
58
59
60
  }
}

Dries's avatar
   
Dries committed
61
62
63
64
65
66
67
68
69
70
71
72
function arg($index) {

  global $q;
  static $arguments;

  if (empty($arguments)) {
    $arguments = explode("/", $q);
  }

  return $arguments[$index];
}

Dries's avatar
   
Dries committed
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
function array2object($node) {

  if (is_array($node)) {
    foreach ($node as $key => $value) {
      $object->$key = $value;
    }
  }
  else {
    $object = $node;
  }

  return $object;
}

function object2array($node) {

  if (is_object($node)) {
    foreach ($node as $key => $value) {
      $array[$key] = $value;
    }
  }
  else {
    $array = $node;
  }

  return $array;
}

Dries's avatar
   
Dries committed
101
function path_uri($brief = 0) {
Dries's avatar
   
Dries committed
102
103
104
105
106
  global $HTTP_HOST, $PHP_SELF;

  $uri = $PHP_SELF;
  $path = $HTTP_HOST . substr($uri, 0, strrpos($uri, "/")) ."/";

Dries's avatar
   
Dries committed
107
108
109
110
  if (!$brief) {
    $path = "http://". $path;
  }
  return $path;
Dries's avatar
   
Dries committed
111
112
}

Dries's avatar
   
Dries committed
113
function request_uri() {
Dries's avatar
   
Dries committed
114
115
116
117
  // since request_uri() is only available on apache, we generate equivalent using other environment vars.

  global $REQUEST_URI, $PATH_INFO, $QUERY_STRING;

Dries's avatar
   
Dries committed
118
  if (isset($REQUEST_URI)) {
Dries's avatar
   
Dries committed
119
120
121
    return $REQUEST_URI;
  }
  else {
122
    return $PATH_INFO ."?". $QUERY_STRING;
Dries's avatar
   
Dries committed
123
  }
Dries's avatar
   
Dries committed
124
125
}

Dries's avatar
   
Dries committed
126
function message_access() {
Dries's avatar
   
Dries committed
127
  return t("You are not authorized to access this page.");
Dries's avatar
   
Dries committed
128
129
130
131
132
133
134
135
136
137
}

function message_na() {
  return t("n/a");
}

function message_throttle() {
  return t("You exceeded the maximum submission rate.  Please wait a few minutes and try again.");
}

Dries's avatar
   
Dries committed
138
139
140
141
142
function locale_init() {
  global $languages, $user;
  return ($languages ? (($user->uid && $user->language) ? $user->language : key($languages)) : 0);
}

Dries's avatar
   
Dries committed
143
function t($string, $args = 0) {
Dries's avatar
   
Dries committed
144
  global $languages;
145

Dries's avatar
   
Dries committed
146
147
148
149
150
151
152
  /*
  ** About the usage of t().  We try to keep strings whole as much as
  ** possible and are unafraid of HTML markup within translation strings
  ** if necessary.  The suggested syntax for a link embedded within a
  ** translation string is for example:
  **
  ** $msg = t("You must login below or <a href=\"%url\">create a new
Dries's avatar
   
Dries committed
153
154
  **           account</a> before viewing the next page.", array("%url"
  **           => url("user/register")));
Dries's avatar
   
Dries committed
155
156
  */

157
158
  $string = ($languages && function_exists("locale") ? locale($string) : $string);

Dries's avatar
   
Dries committed
159
160
  if (!$args) {
    return $string;
Kjartan's avatar
Kjartan committed
161
162
  }
  else {
Dries's avatar
   
Dries committed
163
164
    return strtr($string, $args);
  }
Dries's avatar
   
Dries committed
165
166
167
168
169
170
}

function variable_init($conf = array()) {
  $result = db_query("SELECT * FROM variable");
  while ($variable = db_fetch_object($result)) {
    if (!isset($conf[$variable->name])) {
Dries's avatar
   
Dries committed
171
      $conf[$variable->name] = unserialize($variable->value);
Dries's avatar
   
Dries committed
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
    }
  }

  return $conf;
}

function variable_get($name, $default, $object = 0) {
  global $conf;

  return isset($conf[$name]) ? $conf[$name] : $default;
}

function variable_set($name, $value) {
  global $conf;

Dries's avatar
   
Dries committed
187
  db_query("DELETE FROM variable WHERE name = '%s'", $name);
Dries's avatar
   
Dries committed
188
  db_query("INSERT INTO variable (name, value) VALUES ('%s', '%s')", $name, serialize($value));
Dries's avatar
   
Dries committed
189
190
191
192
193
194
195

  $conf[$name] = $value;
}

function variable_del($name) {
  global $conf;

Dries's avatar
   
Dries committed
196
  db_query("DELETE FROM variable WHERE name = '%s'", $name);
Dries's avatar
   
Dries committed
197
198
199
200

  unset($conf[$name]);
}

Dries's avatar
   
Dries committed
201
function table_cell($cell, $header = 0) {
Dries's avatar
   
Dries committed
202
  if (is_array($cell)) {
Dries's avatar
   
Dries committed
203
204
205
206
207
208
209
210
211
212
213
    $data = $cell["data"];
    foreach ($cell as $key => $value) {
      if ($key != "data")  {
        $attributes .= " $key=\"$value\"";
      }
    }
  }
  else {
    $data = $cell;
  }

Dries's avatar
   
Dries committed
214
  if ($header) {
Dries's avatar
   
Dries committed
215
216
217
218
219
220
221
222
223
224
225
    $output = "<th$attributes>$data</th>";
  }
  else {
    $output = "<td$attributes>$data</td>";
  }

  return $output;
}

function table($header, $rows) {

Dries's avatar
   
Dries committed
226
  $output .= "<table>\n";
Dries's avatar
   
Dries committed
227
228
229
230
231

  /*
  ** Emit the table header:
  */

Dries's avatar
   
Dries committed
232
233
234
235
236
  if (is_array($header)) {
    $output .= " <tr>";
    foreach ($header as $cell) {
      $output .= table_cell($cell, 1);
    }
Dries's avatar
   
Dries committed
237
    $output .= " </tr>\n";
Dries's avatar
   
Dries committed
238
239
240
241
242
243
  }

  /*
  ** Emit the table rows:
  */

Dries's avatar
   
Dries committed
244
245
246
247
248
249
250
251
  if (is_array($rows)) {
    foreach ($rows as $number => $row) {
      if ($number % 2 == 1) {
        $output .= " <tr class=\"light\">";
      }
      else {
        $output .= " <tr class=\"dark\">";
      }
Dries's avatar
   
Dries committed
252

Dries's avatar
   
Dries committed
253
254
255
      foreach ($row as $cell) {
        $output .= table_cell($cell, 0);
      }
Dries's avatar
   
Dries committed
256
      $output .= " </tr>\n";
Dries's avatar
   
Dries committed
257
258
259
    }
  }

Dries's avatar
   
Dries committed
260
  $output .= "</table>\n";
Dries's avatar
   
Dries committed
261
262
263
264

  return $output;
}

Kjartan's avatar
Kjartan committed
265
266
267
268
/**
 * Format a single result entry of a search query:
 *
 * @param $item  a single search result as returned by <module>_search of type
Dries's avatar
   
Dries committed
269
 *               array("count" => ..., "link" => ..., "title" => ...,
Kjartan's avatar
Kjartan committed
270
271
272
 *               "user" => ..., "date" => ..., "keywords" => ...)
 * @param $type  module type of this item
 */
Dries's avatar
   
Dries committed
273
function search_item($item, $type) {
Dries's avatar
   
Dries committed
274
275
276
277
278
279
280
281
282
283
284
285
286
287

  /*
  ** Modules may implement the "search_item" hook in order to overwrite
  ** the default function to display search results.
  */

  if (module_hook($type, "search_item")) {
    $output = module_invoke($type, "search_item", $item);
  }
  else {
    $output .= " <b>". $item["count"] ."&nbsp;&nbsp;<u><a href=\"". $item["link"] ."\">". $item["title"] ."</a></u></b><br />";
    $output .= " <small>$type ". ($item["user"] ? " - ". $item["user"] : "") ."". ($item["date"] ? " - ". format_date($item["date"], "small") : "") ."</small>";
    $output .= "<br /><br />";
  }
Dries's avatar
   
Dries committed
288
289
290
291

  return $output;
}

Kjartan's avatar
Kjartan committed
292
293
294
295
/**
 * Render a generic search form.
 *
 * "Generic" means "universal usable" - that is, usable not only from
Dries's avatar
   
Dries committed
296
 * 'site.com/search', but also as a simple seach box (without
Dries's avatar
   
Dries committed
297
298
 * "Restrict search to", help text, etc) from theme's header etc.
 * This means: provide options to only conditionally render certain
Kjartan's avatar
Kjartan committed
299
300
 * parts of this form.
 *
Dries's avatar
   
Dries committed
301
 * @param $action  Form action. Defaults to 'site.com/search'.
Kjartan's avatar
Kjartan committed
302
 * @param $query   Query string. Defaults to global $keys.
Dries's avatar
   
Dries committed
303
 * @param $options != 0: Render additional form fields/text
Kjartan's avatar
Kjartan committed
304
305
 *                 ("Restrict search to", help text, etc).
 */
Dries's avatar
   
Dries committed
306
307
308
309
function search_form($action = 0, $query = 0, $options = 0) {
  global $keys;

  if (!$action) {
Dries's avatar
   
Dries committed
310
    $action = url("search");
Dries's avatar
   
Dries committed
311
312
313
314
315
316
  }

  if (!$query) {
    $query = $keys;
  }

Kjartan's avatar
Kjartan committed
317
318
  $output .= " <br /><input type=\"text\" size=\"50\" value=\"". check_form($keys) ."\" name=\"keys\" />";
  $output .= " <input type=\"submit\" value=\"". t("Search") ."\" />\n";
Dries's avatar
   
Dries committed
319
320
321
322
323
324
325

  if ($options != 0) {
    $output .= "<br />";
    $output .= t("Restrict search to") .": ";

    foreach (module_list() as $name) {
      if (module_hook($name, "search")) {
Kjartan's avatar
Kjartan committed
326
        $output .= " <input type=\"checkbox\" name=\"edit[type][$name]\" ". ($edit["type"][$name] ? " checked=\"checked\"" : "") ." /> ". t($name);
Dries's avatar
   
Dries committed
327
328
329
330
      }
    }
  }

Kjartan's avatar
Kjartan committed
331
332
  $form .= "<br />";

Dries's avatar
   
Dries committed
333
334
335
336
  return form($output, "post", $action);
}

/*
Kjartan's avatar
Kjartan committed
337
338
 * Collect the search results:
 */
Dries's avatar
   
Dries committed
339
340
341
342
343
function search_data() {
  global $keys, $edit;

  $keys = check_input($keys);

Dries's avatar
   
Dries committed
344
  if (isset($keys)) {
Dries's avatar
   
Dries committed
345
346
    foreach (module_list() as $name) {
      if (module_hook($name, "search") && (!$edit["type"] || $edit["type"][$name]) && ($result = module_invoke($name, "search", check_query($keys)))) {
Kjartan's avatar
Kjartan committed
347
        if ($name == "node" || $name == "comment") {
Dries's avatar
   
Dries committed
348
          $output .= "<p><b>". t("Matching ". $name ."s ranked in order of relevance") .":</b></p>";
Kjartan's avatar
Kjartan committed
349
350
        }
        else {
Dries's avatar
   
Dries committed
351
          $output .= "<p><b>". t("Matching ". $name ."s") .":</b></p>";
Kjartan's avatar
Kjartan committed
352
        }
Dries's avatar
   
Dries committed
353
354
355
356
357
        foreach ($result as $entry) {
          $output .= search_item($entry, $name);
        }
      }
    }
Kjartan's avatar
Kjartan committed
358
    if (!$output) {
Dries's avatar
   
Dries committed
359
360
361
362
363
364
365
      $output .= t("Your search yielded no results.");
    }
  }

  return $output;
}

Kjartan's avatar
Kjartan committed
366
367
368
/**
 * Display the search form and the resulting data.
 *
Dries's avatar
   
Dries committed
369
 * @param $type    If set, search only nodes of this type.
Kjartan's avatar
Kjartan committed
370
 *                 Otherwise, search all types.
Dries's avatar
   
Dries committed
371
 * @param $action  Form action. Defaults to 'site.com/search'.
Kjartan's avatar
Kjartan committed
372
 * @param $query   Query string. Defaults to global $keys.
Dries's avatar
   
Dries committed
373
 * @param $options != 0: Render additional form fields/text
Kjartan's avatar
Kjartan committed
374
375
 *                 ("Restrict search to", help text, etc).
 */
Dries's avatar
   
Dries committed
376
377
378
function search_type($type = 0, $action = 0, $query = 0, $options = 0) {
  global $edit;

Dries's avatar
   
Dries committed
379
  if (isset($type)) {
Dries's avatar
   
Dries committed
380
381
382
383
384
385
    $edit["type"][$type] = "on";
  }

  return search_form($action, $query, $options) . search_data();
}

Dries's avatar
   
Dries committed
386

Dries's avatar
   
Dries committed
387
388
function drupal_goto($url) {

Dries's avatar
   
Dries committed
389
390
391
  /*
  ** Translate &amp; to simply &
  */
Dries's avatar
   
Dries committed
392

Dries's avatar
Dries committed
393
  $url = str_replace("&amp;", "&amp;", $url);
Dries's avatar
   
Dries committed
394

Dries's avatar
   
Dries committed
395
396
397
398
399
400
  /*
  ** It is advised to use "drupal_goto()" instead of PHP's "header()" as
  ** "drupal_goto()" will append the user's session ID to the URI when PHP
  ** is compiled with "--enable-trans-sid".
  */

Dries's avatar
   
Dries committed
401
  if (!ini_get("session.use_trans_sid") || !session_id() || strstr($url, $sid)) {
Dries's avatar
   
Dries committed
402
403
404
    header("Location: $url");
  }
  else {
Dries's avatar
   
Dries committed
405
406
407
408
409
410
411
412
    $sid = session_name() . "=" . session_id();

    if (strstr($url, "?") && !strstr($url, $sid)) {
      header("Location: $url&". $sid);
    }
    else {
      header("Location: $url?". $sid);
    }
Dries's avatar
   
Dries committed
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
  }

  /*
  ** The "Location" header sends a REDIRECT status code to the http
  ** deamon.  In some cases this can go wrong, so we make sure none
  ** of the code /below/ gets executed when we redirect.
  */

  exit();
}

/*
** Stores the referer in a persistent variable:
*/

function referer_save() {
Dries's avatar
   
Dries committed
429
  global $referer, $HTTP_REFERER;
Dries's avatar
   
Dries committed
430

Dries's avatar
   
Dries committed
431
  if (!strstr($HTTP_REFERER, request_uri())) {
Dries's avatar
   
Dries committed
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
    $referer = $HTTP_REFERER;
    session_register("referer");
  }
}

/*
** Restores the referer from a persistent variable:
*/

function referer_load() {
  global $referer;

  if (session_is_registered("referer")) {
    return $referer;
  }
  else {
    return 0;
  }
}

function check_form($text) {
  return htmlspecialchars(stripslashes($text));
}

Dries's avatar
   
Dries committed
456
457
function check_query($text) {
  return addslashes(stripslashes($text));
Dries's avatar
   
Dries committed
458
459
}

Dries's avatar
   
Dries committed
460
function check_input($text) {
Dries's avatar
   
Dries committed
461
462
463
464
  return addslashes(stripslashes($text));
}

function filter($text) {
Dries's avatar
   
Dries committed
465
466
467
468
469
470
471
472

  foreach (module_list() as $name) {
    if (module_hook($name, "filter")) {
      $text = module_invoke($name, "filter", $text);
    }
  }

  return $text;
Dries's avatar
   
Dries committed
473
474
}

Dries's avatar
   
Dries committed
475
476
477
478
479
function rewrite_old_urls($text) {

  /*
  ** This is a *temporary* filter to rewrite old-style URLs to new-style
  ** URLs (clean URLs).  Currently, URLs are being rewritten dynamically
Dries's avatar
   
Dries committed
480
481
  ** (ie. "on output"), however when these rewrite rules have been tested
  ** enough, we will use them to permanently rewrite the links in node
Dries's avatar
   
Dries committed
482
483
484
  ** and comment bodies.
  */

Dries's avatar
   
Dries committed
485
  // rewrite 'node.php?id=<number>[&cid=<number>]' style URLs:
Dries's avatar
   
Dries committed
486
  $text = eregi_replace("(node)\.php\?id=([[:digit:]]+)(&cid=)?([[:digit:]]*)", "?q=\\1/view/\\2/\\4", $text);
Dries's avatar
   
Dries committed
487
488

  // rewrite 'module.php?mod=<name>{&<op>=<value>}' style URLs:
Dries's avatar
   
Dries committed
489
490
491
  $text = ereg_replace("module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "?q=\\2/\\4/\\6" , $text);
  $text = ereg_replace("module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "?q=\\2/\\4" , $text);
  $text = ereg_replace("module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))", "?q=\\2" , $text);
Dries's avatar
   
Dries committed
492

Dries's avatar
   
Dries committed
493
494
495
  return $text;
}

Dries's avatar
   
Dries committed
496
function check_output($text) {
Dries's avatar
   
Dries committed
497
  if (isset($text)) {
Dries's avatar
   
Dries committed
498
499
500
501

    // temporary: for development purpose
    $text = rewrite_old_urls($text);

Dries's avatar
   
Dries committed
502
503
    $text = stripslashes($text);

Dries's avatar
   
Dries committed
504
    if (strip_tags($text, "<a><i><b><u><tt><code><cite><strong><img>") == $text) {
Dries's avatar
   
Dries committed
505
506
507
508
509
510
511
512
      $text = nl2br($text);
    }
  }
  else {
    $text = message_na();
  }

  return $text;
Dries's avatar
   
Dries committed
513
514
515
516
517
518
519
520
521
522
523
}

function check_file($filename) {
  if (is_uploaded_file($filename)) {
    return 1;
  }
  else {
    return 0;
  }
}

Dries's avatar
   
Dries committed
524
525
526
function format_rss_channel($title, $link, $description, $items, $language = "en", $args = array()) {
  // arbitrary elements may be added using the $args associative array

Dries's avatar
   
Dries committed
527
528
529
530
531
  $output .= "<channel>\n";
  $output .= " <title>". htmlentities(strip_tags($title)) ."</title>\n";
  $output .= " <link>". htmlentities(strip_tags($link)) ."</link>\n";
  $output .= " <description>". htmlentities($description) ."</description>\n";
  $output .= " <language>". htmlentities(strip_tags($language)) ."</language>\n";
Dries's avatar
   
Dries committed
532
  foreach ($args as $key => $value) {
533
    $output .= "<$key>". htmlentities(strip_tags($value)) ."</$key>";
Dries's avatar
   
Dries committed
534
  }
Dries's avatar
   
Dries committed
535
536
537
538
539
540
  $output .= $items;
  $output .= "</channel>\n";

  return $output;
}

Dries's avatar
   
Dries committed
541
542
543
function format_rss_item($title, $link, $description, $args = array()) {
  // arbitrary elements may be added using the $args associative array

Dries's avatar
   
Dries committed
544
545
546
  $output .= "<item>\n";
  $output .= " <title>". htmlentities(strip_tags($title)) ."</title>\n";
  $output .= " <link>". htmlentities(strip_tags($link)) ."</link>\n";
Dries's avatar
   
Dries committed
547
  $output .= " <description>". htmlentities(check_output($description)) ."</description>\n";
Dries's avatar
   
Dries committed
548
  foreach ($args as $key => $value) {
549
    $output .= "<$key>". htmlentities(strip_tags($value)) ."</$key>";
Dries's avatar
   
Dries committed
550
  }
Dries's avatar
   
Dries committed
551
552
553
554
555
  $output .= "</item>\n";

  return $output;
}

Dries's avatar
   
Dries committed
556
557
558
559
560
561
562
563
564
565
566
567
568
569
/**
 * Formats a string with a count of items so that the string is pluralized
 * correctly.
 * format_plural calls t() by itself, make sure not to pass already localized
 * strings to it.
 *
 * @param $count    The item count to display.
 * @param $singular The string for the singular case. Please make sure it's clear
 *                  this is singular, to ease translation. ("1 new comment" instead of
 *                  "1 new").
 * @param $plural   The string for the plrual case. Please make sure it's clear
 *                  this is plural, to ease translation. Use %count in places of the
 *                  item count, as in "%count new comments".
 */
Dries's avatar
   
Dries committed
570
function format_plural($count, $singular, $plural) {
Dries's avatar
   
Dries committed
571
  return t($count == 1 ? $singular : $plural, array("%count" => $count));
Dries's avatar
   
Dries committed
572
573
574
}

function format_size($size) {
Dries's avatar
   
Dries committed
575
  $suffix = t("bytes");
Dries's avatar
   
Dries committed
576
577
  if ($size > 1024) {
    $size = round($size / 1024, 2);
Dries's avatar
   
Dries committed
578
    $suffix = t("KB");
Dries's avatar
   
Dries committed
579
580
581
  }
  if ($size > 1024) {
    $size = round($size / 1024, 2);
Dries's avatar
   
Dries committed
582
    $suffix = t("MB");
Dries's avatar
   
Dries committed
583
  }
Dries's avatar
   
Dries committed
584
  return t("%size %suffix", array("%size" => $size, "%suffix" => $suffix));
Dries's avatar
   
Dries committed
585
586
}

Dries's avatar
   
Dries committed
587
function cache_get($key) {
Dries's avatar
   
Dries committed
588
589
590
  $cache = db_fetch_object(db_query("SELECT data, created FROM cache WHERE cid = '%s'", $key));
  $created = $cache->created;
  return $cache->data ? $cache : 0;
Dries's avatar
   
Dries committed
591
592
593
}

function cache_set($cid, $data, $expire = 0) {
Dries's avatar
   
Dries committed
594
  if (db_fetch_object(db_query("SELECT cid FROM cache WHERE cid = '%s'", $cid))) {
Dries's avatar
   
Dries committed
595
    db_query("UPDATE cache SET data = '%s', created = %d, expire = %d WHERE cid = '%s'", $data, time(), $expire, $cid);
Dries's avatar
   
Dries committed
596
597
  }
  else {
Dries's avatar
   
Dries committed
598
    db_query("INSERT INTO cache (cid, data, created, expire) VALUES('%s', '%s', %d, %d)", $cid, $data, time(), $expire);
Dries's avatar
   
Dries committed
599
  }
Dries's avatar
   
Dries committed
600
601
}

Dries's avatar
   
Dries committed
602
603
function cache_clear_all($cid = NULL) {
  if (empty($cid)) {
Dries's avatar
   
Dries committed
604
    db_query("DELETE FROM cache WHERE expire <> 0");
Dries's avatar
   
Dries committed
605
606
607
608
  }
  else {
    db_query("DELETE FROM cache WHERE cid = '%s'", $cid);
  }
Dries's avatar
   
Dries committed
609
610
}

Dries's avatar
   
Dries committed
611
612
613
614
615
616
617
function cache_clear_old($cid = NULL) {
  if (empty($cid)) {
    db_query("DELETE FROM cache WHERE expire < ". time() ." AND expire > 0");
  }
  else {
    db_query("DELETE FROM cache WHERE cid = '%s' AND expire < %s AND expire > 0", $cid, time());
  }
Dries's avatar
   
Dries committed
618
619
620
}

function page_set_cache() {
Dries's avatar
   
Dries committed
621
  global $user, $REQUEST_METHOD;
Dries's avatar
   
Dries committed
622
623

  if (!$user->uid && $REQUEST_METHOD == "GET") {
Dries's avatar
   
Dries committed
624
    if ($data = ob_get_contents()) {
Dries's avatar
   
Dries committed
625
      cache_set(request_uri(), $data, (time() + variable_get("cache_clear", 120)));
Dries's avatar
   
Dries committed
626
627
628
629
    }
  }
}

Dries's avatar
   
Dries committed
630
function page_get_cache() {
Dries's avatar
   
Dries committed
631
  global $user, $REQUEST_METHOD;
Dries's avatar
   
Dries committed
632
633

  if (!$user->uid && $REQUEST_METHOD == "GET") {
Dries's avatar
   
Dries committed
634
    if ($cache = cache_get(request_uri())) {
Dries's avatar
   
Dries committed
635
      cache_clear_old();
Dries's avatar
   
Dries committed
636
637
638
    }
    else {
      ob_start();
Dries's avatar
   
Dries committed
639
640
    }
  }
Dries's avatar
   
Dries committed
641

Dries's avatar
   
Dries committed
642
  return $cache;
Dries's avatar
   
Dries committed
643
644
645
}

function format_interval($timestamp) {
Dries's avatar
   
Dries committed
646
  $units = array("1 year|%count years" => 31536000, "1 week|%count weeks" => 604800, "1 day|%count days" => 86400, "1 hour|%count hours" => 3600, "1 min|%count min" => 60, "1 sec|%count sec" => 1);
Kjartan's avatar
Kjartan committed
647
  foreach ($units as $key=>$value) {
Dries's avatar
   
Dries committed
648
649
650
651
652
653
    $key = explode("|", $key);
    if ($timestamp >= $value) {
      $output .= ($output ? " " : "") . format_plural(floor($timestamp / $value), $key[0], $key[1]);
      $timestamp %= $value;
    }
  }
Dries's avatar
   
Dries committed
654
  return ($output) ? $output : t("0 sec");
Dries's avatar
   
Dries committed
655
656
657
658
659
}

function format_date($timestamp, $type = "medium", $format = "") {
  global $user;

Kjartan's avatar
Kjartan committed
660
  $timestamp += ($user->timezone) ? $user->timezone - date("Z") : 0;
Dries's avatar
   
Dries committed
661
662
663

  switch ($type) {
    case "small":
Dries's avatar
   
Dries committed
664
      $date = date(variable_get("date_format", "m/d/Y - H:i"), $timestamp);
Dries's avatar
   
Dries committed
665
666
      break;
    case "medium":
Dries's avatar
   
Dries committed
667
      $date = t(date("l", $timestamp)) .", ". date(variable_get("date_format", "m/d/Y - H:i"), $timestamp);
Dries's avatar
   
Dries committed
668
669
670
671
672
673
674
      break;
    case "large":
      $date = t(date("l", $timestamp)) .", ". t(date("F", $timestamp)) ." ". date("d, Y - H:i", $timestamp);
      break;
    case "custom":
      for ($i = strlen($format); $i >= 0; $c = $format[--$i]) {
        if (strstr("DFlMSw", $c)) {
675
          $date = t(date($c, $timestamp)) . $date;
Dries's avatar
   
Dries committed
676
        }
677
678
        else if (strstr("AaBdgGhHiIjLmnrstTUWYyZz", $c)) {
          $date = date($c, $timestamp) . $date;
Dries's avatar
   
Dries committed
679
680
        }
        else {
Kjartan's avatar
Kjartan committed
681
          $date = $c.$date;
Dries's avatar
   
Dries committed
682
683
684
685
        }
      }
      break;
    default:
Dries's avatar
   
Dries committed
686
      $date = t(date("l", $timestamp)) .", ". date(variable_get("date_format", "m/d/Y - H:i"), $timestamp);
Dries's avatar
   
Dries committed
687
688
689
690
691
  }
  return $date;
}

function format_name($object) {
Dries's avatar
   
Dries committed
692
  global $PHP_SELF;
Dries's avatar
   
Dries committed
693
694

  if ($object->uid && $object->name) {
Dries's avatar
   
Dries committed
695
696
    if (strstr($PHP_SELF, "admin")) {
      $output = l($object->name, "admin/user/edit/$object->uid", array("title" => t("Administer user profile.")));
Dries's avatar
   
Dries committed
697
698
    }
    else {
Dries's avatar
   
Dries committed
699
      $output = l($object->name, "user/view/$object->uid", array("title" => t("View user profile.")));
Dries's avatar
   
Dries committed
700
    }
Dries's avatar
   
Dries committed
701
702
  }
  else {
Dries's avatar
   
Dries committed
703
    $output = t(variable_get(anonymous, "Anonymous"));
Dries's avatar
   
Dries committed
704
705
  }

Dries's avatar
   
Dries committed
706
  return $output;
Dries's avatar
   
Dries committed
707
708
709
}

function form($form, $method = "post", $action = 0, $options = 0) {
710
  return "<form action=\"". ($action ? $action : htmlentities(request_uri())) ."\" method=\"$method\"". ($options ? " $options" : "") .">\n$form</form>\n";
Dries's avatar
   
Dries committed
711
712
713
}

function form_item($title, $value, $description = 0) {
714
  return "<p>". ($title ? "<b>$title:</b><br />" : "") . $value . ($description ? "<br /><small><i>$description</i></small>" : "") ."</p>\n";
Dries's avatar
   
Dries committed
715
716
}

717
718
function form_checkbox($title, $name, $value = 1, $checked = 0, $description = 0) {
  return form_item(0, "<input type=\"checkbox\" name=\"edit[$name]\" value=\"". $value ."\"". ($checked ? " checked=\"checked\"" : "") ." /> $title", $description);
Dries's avatar
   
Dries committed
719
720
721
722
723
724
725
726
727
728
729
730
731
732
}

function form_textfield($title, $name, $value, $size, $maxlength, $description = 0) {
  return form_item($title, "<input maxlength=\"$maxlength\" name=\"edit[$name]\" size=\"$size\" value=\"". check_form($value) ."\" />", $description);
}

function form_password($title, $name, $value, $size, $maxlength, $description = 0) {
  return form_item($title, "<input type=\"password\" maxlength=\"$maxlength\" name=\"edit[$name]\" size=\"$size\" value=\"". check_form($value) ."\" />", $description);
}

function form_textarea($title, $name, $value, $cols, $rows, $description = 0) {
  return form_item($title, "<textarea wrap=\"virtual\" cols=\"$cols\" rows=\"$rows\" name=\"edit[$name]\">". check_form($value) ."</textarea>", $description);
}

Dries's avatar
   
Dries committed
733
function form_select($title, $name, $value, $options, $description = 0, $extra = 0, $multiple = 0) {
Dries's avatar
   
Dries committed
734
  if (count($options) > 0) {
Kjartan's avatar
Kjartan committed
735
    foreach ($options as $key=>$choice) {
Dries's avatar
   
Dries committed
736
737
      $select .= "<option value=\"$key\"". (is_array($value) ? (in_array($key, $value) ? " selected=\"selected\"" : "") : ($key == $value ? " selected=\"selected\"" : "")) .">". check_form($choice) ."</option>";
    }
Kjartan's avatar
Kjartan committed
738
    return form_item($title, "<select name=\"edit[$name]". ($multiple ? "[]" : "") ."\"". ($multiple ? " multiple " : "") . ($extra ? " $extra" : "") .">$select</select>", $description);
Dries's avatar
   
Dries committed
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
  }
}

function form_file($title, $name, $size, $description = 0) {
  return form_item($title, "<input type=\"file\" name=\"edit[$name]\" size=\"$size\" />\n", $description);
}

function form_hidden($name, $value) {
  return "<input type=\"hidden\" name=\"edit[$name]\" value=\"". check_form($value) ."\" />\n";
}

function form_submit($value) {
  return "<input type=\"submit\" name=\"op\" value=\"". check_form($value) ."\" />\n";
}

Dries's avatar
   
Dries committed
754
755
756
757
758
759
760
761
function form_weight($title = NULL, $name = "weight", $value = 0, $delta = 10, $description = 0, $extra = 0) {
  for ($n = (-1*$delta); $n <= $delta; $n++) {
    $weights[$n] = $n;
  }

  return form_select($title, $name, $value, $weights, $description, $extra);
}

Dries's avatar
   
Dries committed
762
function url($url = NULL, $query = NULL) {
Dries's avatar
   
Dries committed
763

Dries's avatar
   
Dries committed
764
765
  if (isset($url)) {
    if (isset($query)) {
Dries's avatar
Dries committed
766
      return "?q=$url&amp;$query";
Dries's avatar
   
Dries committed
767
768
769
770
771
772
    }
    else {
      return "?q=$url";
    }
  }
  else {
Dries's avatar
   
Dries committed
773
    if (isset($query)) {
Dries's avatar
   
Dries committed
774
775
      return "?$query";
    }
Dries's avatar
   
Dries committed
776
777
778
    else {
      return "";
    }
Dries's avatar
   
Dries committed
779
  }
Dries's avatar
   
Dries committed
780
781
}

Dries's avatar
   
Dries committed
782
function l($text, $url, $attributes = array(), $query = NULL) {
Dries's avatar
   
Dries committed
783

Dries's avatar
   
Dries committed
784
785
786
787
  $t = array();
  foreach ($attributes as $key => $value) {
    $t[] = "$key=\"$value\"";
  }
Dries's avatar
   
Dries committed
788
789

  return "<a href=\"". url($url, $query) ."\" ". implode($t, " ") .">$text</a>";
Dries's avatar
   
Dries committed
790
791
}

Dries's avatar
   
Dries committed
792
function field_get($string, $name) {
Dries's avatar
Dries committed
793
  ereg(",$name=([^,]+)", ", $string", $regs);
Dries's avatar
   
Dries committed
794
795
796
797
798
  return $regs[1];
}

function field_set($string, $name, $value) {
  $rval = ereg_replace(",$name=[^,]+", "", ",$string");
Dries's avatar
   
Dries committed
799
  if (isset($value)) {
Kjartan's avatar
Kjartan committed
800
801
    $rval .= ($rval == "," ? "" : ",") ."$name=$value";
  }
Dries's avatar
   
Dries committed
802
803
804
805
  return substr($rval, 1);
}

function link_page() {
806
  global $custom_links;
Dries's avatar
   
Dries committed
807

808
809
810
811
  if (is_array($custom_links)) {
    return $custom_links;
  }
  else {
Dries's avatar
   
Dries committed
812
813
    $links = module_invoke_all("link", "page");
    array_unshift($links, "<a href=\"index.php\" title=\"". t("Return to the main page.") ."\">". t("home") ."</a>");
814
    return $links;
Dries's avatar
   
Dries committed
815
  }
Dries's avatar
   
Dries committed
816
}
Dries's avatar
   
Dries committed
817
818

function link_node($node, $main = 0) {
Dries's avatar
   
Dries committed
819
  return module_invoke_all("link", "node", $node, $main);
Dries's avatar
   
Dries committed
820
821
822
823
}

function timer_start() {
  global $timer;
Dries's avatar
   
Dries committed
824
825
  list($usec, $sec) = explode(" ", microtime());
  $timer = (float)$usec + (float)$sec;
Dries's avatar
   
Dries committed
826
827
}

Dries's avatar
   
Dries committed
828
829
830
831
832
function query_print() {
  global $queries;
  print "<pre>";
  print_r($queries);
  print "</pre>";
Dries's avatar
   
Dries committed
833
834
835
836
837
838
839
840
}

function page_header() {
  if (variable_get("dev_timer", 0)) {
    timer_start();
  }

  if (variable_get("cache", 0)) {
Dries's avatar
   
Dries committed
841
842
843
844
845
846
847
848
849
850
851
852
    if ($cache = page_get_cache()) {
      $date = gmdate("D, d M Y H:i:s", $cache->created) ." GMT";
      header("Last-Modified: $date");
      header("ETag: \"$date\"");
      if ($headers = getallheaders()) {
        // NOTE: the above is an Apache-ism so for the time being we don't send 304 headers to IIS servers.
        if ($headers["If-Modified-Since"] == $date && $headers["If-None-Match"] == "\"$date\"") {
          header("HTTP/1.0 304 Not Modified");
          exit();
        }
      }
      print $cache->data;
Dries's avatar
   
Dries committed
853
854
855
856
857
858
      exit();
    }
  }
}

function page_footer() {
Dries's avatar
   
Dries committed
859

Dries's avatar
   
Dries committed
860
  if (variable_get("cache", 0)) {
Dries's avatar
   
Dries committed
861
    page_set_cache();
Dries's avatar
   
Dries committed
862
  }
Dries's avatar
   
Dries committed
863
864
865
866

  // a hook for modules where modules may take action at the end of a request
  // good uses include setting a cache, page logging, etc.
  module_invoke_all("exit");
Dries's avatar
   
Dries committed
867
868
869
}

unset($conf);
Dries's avatar
   
Dries committed
870

871
872
$config = conf_init();

Dries's avatar
   
Dries committed
873
874
include_once "includes/$config.php";
include_once "includes/database.inc";
Dries's avatar
   
Dries committed
875
include_once "includes/xmlrpc.inc";
Dries's avatar
   
Dries committed
876
877
include_once "includes/module.inc";
include_once "includes/theme.inc";
Dries's avatar
   
Dries committed
878
include_once "includes/pager.inc";
Dries's avatar
   
Dries committed
879
include_once "includes/menu.inc";
Dries's avatar
   
Dries committed
880

881
882
// initialize configuration variables, using values from conf.php if available:
$conf = variable_init(isset($conf) ? $conf : array());
Dries's avatar
   
Dries committed
883
884
885
886
887
888
889
890
891
892
893
894
895
896

// initialize installed modules:
module_init();

// initialize localization system:
$locale = locale_init();

// initialize theme:
$theme = theme_init();

// set error handler:
set_error_handler("error_handler");

?>