common.inc 31.8 KB
Newer Older
Dries's avatar
   
Dries committed
1
2
3
4
5
6
7
8
9
10
11
<?php
// $Id$

function conf_init() {

  /*
  ** 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
12
  $uri = $_SERVER["PHP_SELF"];
Dries's avatar
   
Dries committed
13

Dries's avatar
   
Dries committed
14
  $file = strtolower(strtr($_SERVER["HTTP_HOST"] . substr($uri, 0, strrpos($uri, "/")), "/:", ".."));
Dries's avatar
   
Dries committed
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

  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
31
32

  if ($errno & E_ALL ^ E_NOTICE) {
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', %d)", $user->uid, $type, $message, $link, request_uri(), getenv("REMOTE_ADDR"), time());
Dries's avatar
   
Dries committed
41
42
43
44
}

function throttle($type, $rate) {
  if (!user_access("access administration pages")) {
Dries's avatar
   
Dries committed
45
    if ($throttle = db_fetch_object(db_query("SELECT * FROM {watchdog} WHERE type = '$type' AND hostname = '". getenv("REMOTE_ADDR") ."' AND ". time() ." - timestamp < $rate"))) {
Dries's avatar
   
Dries committed
46
47
48
49
50
51
52
53
54
      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
function arg($index) {

  static $arguments;

  if (empty($arguments)) {
Dries's avatar
   
Dries committed
66
    $arguments = explode("/", $_GET["q"]);
Dries's avatar
   
Dries committed
67
68
69
70
71
  }

  return $arguments[$index];
}

Dries's avatar
   
Dries committed
72
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
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
100
101
102
103
104
105
106
107
108
function referer_uri() {

  if (isset($_SERVER["HTTP_REFERER"])) {
    $uri = $_SERVER["HTTP_REFERER"];

    return check_url($uri);
  }
}

Dries's avatar
   
Dries committed
109
function request_uri() {
Dries's avatar
   
Dries committed
110
111
112
113
  /*
  ** Since request_uri() is only available on Apache, we generate
  ** equivalent using other environment vars.
  */
Dries's avatar
   
Dries committed
114

Dries's avatar
   
Dries committed
115
  if (isset($_SERVER["REQUEST_URI"])) {
116
    $uri = $_SERVER["REQUEST_URI"];
Dries's avatar
   
Dries committed
117
118
  }
  else {
119
    $uri = $_SERVER["PHP_SELF"] ."?". $_SERVER["QUERY_STRING"];
Dries's avatar
   
Dries committed
120
  }
121

Dries's avatar
   
Dries committed
122
  return check_url($uri);
Dries's avatar
   
Dries committed
123
124
}

Dries's avatar
   
Dries committed
125
function message_access() {
Dries's avatar
   
Dries committed
126
  return t("You are not authorized to access this page.");
Dries's avatar
   
Dries committed
127
128
129
130
131
132
133
134
135
136
}

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
137
138
function locale_init() {
  global $languages, $user;
Dries's avatar
   
Dries committed
139
140
141
142
143
144
  if ($user->uid && $languages[$user->language]) {
    return $user->language;
  }
  else {
    return key($languages);
  }
Dries's avatar
   
Dries committed
145
146
}

Dries's avatar
   
Dries committed
147
function t($string, $args = 0) {
Dries's avatar
   
Dries committed
148
  global $languages;
149

Dries's avatar
   
Dries committed
150
151
152
153
154
155
156
  /*
  ** 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
157
158
  **           account</a> before viewing the next page.", array("%url"
  **           => url("user/register")));
Dries's avatar
   
Dries committed
159
160
  */

161
  $string = ($languages && module_exist("locale") ? locale($string) : $string);
162

Dries's avatar
   
Dries committed
163
164
  if (!$args) {
    return $string;
Kjartan's avatar
Kjartan committed
165
166
  }
  else {
Dries's avatar
   
Dries committed
167
168
    return strtr($string, $args);
  }
Dries's avatar
   
Dries committed
169
170
171
}

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

  return $conf;
}

182
function variable_get($name, $default) {
Dries's avatar
   
Dries committed
183
184
185
186
187
188
189
190
  global $conf;

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

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

Dries's avatar
   
Dries committed
191
192
  db_query("DELETE FROM {variable} WHERE name = '%s'", $name);
  db_query("INSERT INTO {variable} (name, value) VALUES ('%s', '%s')", $name, serialize($value));
Dries's avatar
   
Dries committed
193
194
195
196
197
198
199

  $conf[$name] = $value;
}

function variable_del($name) {
  global $conf;

Dries's avatar
   
Dries committed
200
  db_query("DELETE FROM {variable} WHERE name = '%s'", $name);
Dries's avatar
   
Dries committed
201
202
203
204

  unset($conf[$name]);
}

Dries's avatar
   
Dries committed
205
function drupal_specialchars($input, $quotes = ENT_NOQUOTES) {
Dries's avatar
   
Dries committed
206
207
208
209
210
211
212
213
214

  /*
  ** Note that we'd like to go 'htmlspecialchars($input, $quotes, "utf-8")'
  ** like the PHP manual tells us to, but we can't because there's a bug in
  ** PHP <4.3 that makes it mess up multibyte charsets if we specify the
  ** charset.  Change this later once we make PHP 4.3 a requirement.
  */

  return htmlspecialchars($input, $quotes);
Dries's avatar
   
Dries committed
215
216
}

Dries's avatar
   
Dries committed
217
function table_cell($cell, $header = 0) {
Dries's avatar
   
Dries committed
218
  if (is_array($cell)) {
Dries's avatar
   
Dries committed
219
220
221
222
223
224
225
226
227
228
229
    $data = $cell["data"];
    foreach ($cell as $key => $value) {
      if ($key != "data")  {
        $attributes .= " $key=\"$value\"";
      }
    }
  }
  else {
    $data = $cell;
  }

Dries's avatar
   
Dries committed
230
  if ($header) {
Dries's avatar
   
Dries committed
231
232
233
234
235
236
237
238
239
240
241
    $output = "<th$attributes>$data</th>";
  }
  else {
    $output = "<td$attributes>$data</td>";
  }

  return $output;
}

function table($header, $rows) {

242
  $output = "<table>\n";
Dries's avatar
   
Dries committed
243
244
245
246
247

  /*
  ** Emit the table header:
  */

Dries's avatar
   
Dries committed
248
249
250
  if (is_array($header)) {
    $output .= " <tr>";
    foreach ($header as $cell) {
Dries's avatar
   
Dries committed
251
252
253
      if (is_array($cell) && $cell["field"]) {
        $cell = tablesort($cell, $header);
      }
Dries's avatar
   
Dries committed
254
255
      $output .= table_cell($cell, 1);
    }
Dries's avatar
   
Dries committed
256
    $output .= " </tr>\n";
Dries's avatar
   
Dries committed
257
258
259
260
261
262
  }

  /*
  ** Emit the table rows:
  */

Dries's avatar
   
Dries committed
263
264
265
266
267
268
269
270
  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
271

Dries's avatar
   
Dries committed
272
273
274
      foreach ($row as $cell) {
        $output .= table_cell($cell, 0);
      }
Dries's avatar
   
Dries committed
275
      $output .= " </tr>\n";
Dries's avatar
   
Dries committed
276
277
278
    }
  }

Dries's avatar
   
Dries committed
279
  $output .= "</table>\n";
Dries's avatar
   
Dries committed
280
281
282
283

  return $output;
}

284
285
286
287
288
289
/**
 * Verify the syntax of the given e-mail address.  Empty e-mail addresses
 * are allowed.  See RFC 2822 for details.
 *
 * @param $mail  a email address
 */
Dries's avatar
   
Dries committed
290
function valid_email_address($mail) {
291
292
293
294
295
296
297
298
299
300
301
302
303
  $user = '[a-zA-Z0-9_\-\.\+\^!#\$%&*+\/\=\?\`\|\{\}~\']+';
  $domain = '(?:[a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9]\.?)+';
  $ipv4 = '[0-9]{1,3}(\.[0-9]{1,3}){3}';
  $ipv6 = '[0-9a-fA-F]{1,4}(\:[0-9a-fA-F]{1,4}){7}';

  if (preg_match("/^$user@($domain|(\[($ipv4|$ipv6)\]))$/", $mail)) {
    return 1;
  }
  else {
    return 0;
  }
}

Dries's avatar
   
Dries committed
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
/**
 * Verify the syntax of the given URL.
 *
 * @param $url  an URL
 */
function valid_url($url) {

  if (preg_match("/^[a-zA-z0-9\/:_\-_\.]+$/", $url)) {
    return 1;
  }
  else {
    return 0;
  }
}

Kjartan's avatar
Kjartan committed
319
320
321
322
/**
 * 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
323
 *               array("count" => ..., "link" => ..., "title" => ...,
Kjartan's avatar
Kjartan committed
324
325
326
 *               "user" => ..., "date" => ..., "keywords" => ...)
 * @param $type  module type of this item
 */
Dries's avatar
   
Dries committed
327
function search_item($item, $type) {
Dries's avatar
   
Dries committed
328
329
330
331
332
333
334
335
336
337

  /*
  ** 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 {
Dries's avatar
   
Dries committed
338
    $output .= " <b><u><a href=\"". $item["link"] ."\">". $item["title"] ."</a></u></b><br />";
Dries's avatar
   
Dries committed
339
340
341
    $output .= " <small>$type ". ($item["user"] ? " - ". $item["user"] : "") ."". ($item["date"] ? " - ". format_date($item["date"], "small") : "") ."</small>";
    $output .= "<br /><br />";
  }
Dries's avatar
   
Dries committed
342
343
344
345

  return $output;
}

Kjartan's avatar
Kjartan committed
346
347
348
349
/**
 * Render a generic search form.
 *
 * "Generic" means "universal usable" - that is, usable not only from
Dries's avatar
   
Dries committed
350
 * 'site.com/search', but also as a simple seach box (without
Dries's avatar
   
Dries committed
351
352
 * "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
353
354
 * parts of this form.
 *
Dries's avatar
   
Dries committed
355
 * @param $action  Form action. Defaults to 'site.com/search'.
Dries's avatar
   
Dries committed
356
 * @param $keys   string containing keywords for the search.
Dries's avatar
   
Dries committed
357
 * @param $options != 0: Render additional form fields/text
Kjartan's avatar
Kjartan committed
358
359
 *                 ("Restrict search to", help text, etc).
 */
Dries's avatar
   
Dries committed
360
function search_form($action = NULL, $keys = NULL, $options = NULL) {
Dries's avatar
   
Dries committed
361
362

  if (!$action) {
Dries's avatar
   
Dries committed
363
    $action = url("search");
Dries's avatar
   
Dries committed
364
365
  }

Kjartan's avatar
Kjartan committed
366
367
  $output .= " <br /><input type=\"text\" size=\"50\" value=\"". check_form($keys) ."\" name=\"keys\" />";
  $output .= " <input type=\"submit\" value=\"". t("Search") ."\" />\n";
Dries's avatar
   
Dries committed
368
369
370
371
372
373
374

  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
375
        $output .= " <input type=\"checkbox\" name=\"edit[type][$name]\" ". ($edit["type"][$name] ? " checked=\"checked\"" : "") ." /> ". t($name);
Dries's avatar
   
Dries committed
376
377
378
379
      }
    }
  }

Kjartan's avatar
Kjartan committed
380
381
  $form .= "<br />";

Dries's avatar
   
Dries committed
382
383
384
385
  return form($output, "post", $action);
}

/*
Kjartan's avatar
Kjartan committed
386
387
 * Collect the search results:
 */
Dries's avatar
   
Dries committed
388
function search_data($keys = NULL) {
Dries's avatar
   
Dries committed
389
390

  $edit = $_POST["edit"];
Dries's avatar
   
Dries committed
391

Dries's avatar
   
Dries committed
392
  if (isset($keys)) {
Dries's avatar
   
Dries committed
393
394
    foreach (module_list() as $name) {
      if (module_hook($name, "search") && (!$edit["type"] || $edit["type"][$name]) && ($result = module_invoke($name, "search", check_query($keys)))) {
Kjartan's avatar
Kjartan committed
395
        if ($name == "node" || $name == "comment") {
Dries's avatar
   
Dries committed
396
          $output .= "<p><b>". t("Matching ". $name ."s ranked in order of relevance") .":</b></p>";
Kjartan's avatar
Kjartan committed
397
398
        }
        else {
Dries's avatar
   
Dries committed
399
          $output .= "<p><b>". t("Matching ". $name ."s") .":</b></p>";
Kjartan's avatar
Kjartan committed
400
        }
Dries's avatar
   
Dries committed
401
402
403
404
405
406
407
408
409
410
        foreach ($result as $entry) {
          $output .= search_item($entry, $name);
        }
      }
    }
  }

  return $output;
}

Kjartan's avatar
Kjartan committed
411
412
413
/**
 * Display the search form and the resulting data.
 *
Dries's avatar
   
Dries committed
414
 * @param $type    If set, search only nodes of this type.
Kjartan's avatar
Kjartan committed
415
 *                 Otherwise, search all types.
Dries's avatar
   
Dries committed
416
 * @param $action  Form action. Defaults to 'site.com/search'.
Kjartan's avatar
Kjartan committed
417
 * @param $query   Query string. Defaults to global $keys.
Dries's avatar
   
Dries committed
418
 * @param $options != 0: Render additional form fields/text
Kjartan's avatar
Kjartan committed
419
420
 *                 ("Restrict search to", help text, etc).
 */
Dries's avatar
   
Dries committed
421
function search_type($type, $action = NULL, $keys = NULL, $options = NULL) {
Dries's avatar
   
Dries committed
422

Dries's avatar
   
Dries committed
423
  $_POST["edit"]["type"][$type] = "on";
Dries's avatar
   
Dries committed
424

Dries's avatar
   
Dries committed
425
  return search_form($action, $keys, $options) . "<br />". search_data($keys);
Dries's avatar
   
Dries committed
426
427
}

Dries's avatar
   
Dries committed
428

Dries's avatar
   
Dries committed
429
430
function drupal_goto($url) {

Dries's avatar
   
Dries committed
431
432
433
  /*
  ** Translate &amp; to simply &
  */
Dries's avatar
   
Dries committed
434

Dries's avatar
   
Dries committed
435
  $url = str_replace("&amp;", "&", $url);
Dries's avatar
   
Dries committed
436

Dries's avatar
   
Dries committed
437
438
439
440
441
  /*
  ** 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
442
  if (!ini_get("session.use_trans_sid") || !session_id() || strstr($url, session_id())) {
Dries's avatar
   
Dries committed
443
444
445
    header("Location: $url");
  }
  else {
Dries's avatar
   
Dries committed
446
447
448
449
450
451
452
453
    $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
454
455
456
457
  }

  /*
  ** The "Location" header sends a REDIRECT status code to the http
Dries's avatar
   
Dries committed
458
  ** daemon.  In some cases this can go wrong, so we make sure none
Dries's avatar
   
Dries committed
459
460
461
462
463
464
465
466
467
468
469
  ** 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
470
471
  if (!strstr(referer_uri(), request_uri())) {
    $_SESSION["referer"] = referer_uri();
Dries's avatar
   
Dries committed
472
473
474
475
476
477
478
479
  }
}

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

function referer_load() {
Dries's avatar
   
Dries committed
480
481
  if (isset($_SESSION["referer"])) {
    return $_SESSION["referer"];
Dries's avatar
   
Dries committed
482
483
484
485
486
487
  }
  else {
    return 0;
  }
}

Dries's avatar
   
Dries committed
488
function valid_input_data($data) {
489
490
491
492
493
494
495

  if (is_array($data)) {
    /*
    ** Form data can contain a number of nested arrays.
    */

    foreach ($data as $key => $value) {
Dries's avatar
   
Dries committed
496
497
498
      if (!valid_input_data($value)) {
        return 0;
      }
499
500
501
502
503
504
505
    }
  }
  else {
    /*
    ** Detect evil input data.
    */

Dries's avatar
Dries committed
506
    // check strings:
Dries's avatar
Dries committed
507
    $match  = preg_match("/\Wjavascript\s*:/i", $data);
Dries's avatar
Dries committed
508
509
510
    $match += preg_match("/\Wexpression\s*\(/i", $data);
    $match += preg_match("/\Walert\s*\(/i", $data);

511
    // check attributes:
Dries's avatar
Dries committed
512
    $match += preg_match("/\W(dynsrc|datasrc|data|lowsrc|on[a-z]+)\s*=[^>]+?>/i", $data);
Dries's avatar
   
Dries committed
513

514
515

    // check tags:
Dries's avatar
   
Dries committed
516
    $match += preg_match("/<\s*(applet|script|object|style|embed|form|blink|meta|html|frame|iframe|layer|ilayer|head|frameset|xml)/i", $data);
517
518
519

    if ($match) {
      watchdog("warning", "terminated request because of suspicious input data: ". drupal_specialchars($data));
Dries's avatar
   
Dries committed
520
      return 0;
521
522
    }
  }
Dries's avatar
   
Dries committed
523
524

  return 1;
525
}
Dries's avatar
   
Dries committed
526

527
function check_url($uri) {
Dries's avatar
   
Dries committed
528
529
530
531
532
533
534
535
536
537
538
539
  $uri = htmlspecialchars($uri, ENT_QUOTES);

  /*
  ** We replace ( and ) with their entity equivalents to prevent XSS
  ** attacks.
  */

  $uri = strtr($uri, array("(" => "&040;", ")" => "&041;"));

  return $uri;
}

Dries's avatar
   
Dries committed
540
function check_form($text) {
Dries's avatar
   
Dries committed
541
  return drupal_specialchars($text, ENT_QUOTES);
Dries's avatar
   
Dries committed
542
543
}

Dries's avatar
   
Dries committed
544
function check_query($text) {
Dries's avatar
   
Dries committed
545
  return addslashes($text);
Dries's avatar
   
Dries committed
546
547
548
}

function filter($text) {
Dries's avatar
   
Dries committed
549

Dries's avatar
   
Dries committed
550
551
552
553
554
555
556
557
558
559
560
561
562
  $modules = module_list();

  /*
  ** Make sure the HTML filters that are part of the node module
  ** are run first.
  */

  if (in_array("node", $modules)) {
    $text = module_invoke("node", "filter", $text);
  }

  foreach ($modules as $name) {
    if (module_hook($name, "filter") && $name != "node") {
Dries's avatar
   
Dries committed
563
564
565
566
567
      $text = module_invoke($name, "filter", $text);
    }
  }

  return $text;
Dries's avatar
   
Dries committed
568
569
}

Dries's avatar
   
Dries committed
570
571
function rewrite_old_urls($text) {

Dries's avatar
   
Dries committed
572
573
574
575
  global $base_url;

  $end = substr($base_url, 12);

Dries's avatar
   
Dries committed
576
577
578
  /*
  ** 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
579
580
  ** (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
581
582
583
  ** and comment bodies.
  */

Dries's avatar
   
Dries committed
584
  if (variable_get("clean_url", "0") == "0") {
Dries's avatar
   
Dries committed
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
    /*
    ** Relative URLs:
    */

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

    // rewrite 'module.php?mod=<name>{&<op>=<value>}' style URLs:
    $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);

    /*
    ** Absolute URLs:
    */

Dries's avatar
   
Dries committed
601
    // rewrite 'node.php?id=<number>[&cid=<number>]' style URLs:
Dries's avatar
   
Dries committed
602
    $text = eregi_replace("$end/(node)\.php\?id=([[:digit:]]+)(&cid=)?([[:digit:]]*)", "$end/?q=\\1/view/\\2/\\4", $text);
Dries's avatar
   
Dries committed
603

Dries's avatar
   
Dries committed
604
    // rewrite 'module.php?mod=<name>{&<op>=<value>}' style URLs:
Dries's avatar
   
Dries committed
605
606
607
    $text = ereg_replace("$end/module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "$end/?q=\\2/\\4/\\6" , $text);
    $text = ereg_replace("$end/module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "$end/?q=\\2/\\4", $text);
    $text = ereg_replace("$end/module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))", "\"$end/?q=\\2", $text);
Dries's avatar
   
Dries committed
608
609
  }
  else {
Dries's avatar
   
Dries committed
610
611
612
613
    /*
    ** Relative URLs:
    */

Dries's avatar
   
Dries committed
614
    // rewrite 'node.php?id=<number>[&cid=<number>]' style URLs:
Dries's avatar
   
Dries committed
615
    $text = eregi_replace("\"(node)\.php\?id=([[:digit:]]+)(&cid=)?([[:digit:]]*)", "\"\\1/view/\\2/\\4", $text);
Dries's avatar
   
Dries committed
616
617

    // rewrite 'module.php?mod=<name>{&<op>=<value>}' style URLs:
Dries's avatar
   
Dries committed
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
    $text = ereg_replace("\"module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "\"\\2/\\4/\\6", $text);
    $text = ereg_replace("\"module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "\"\\2/\\4", $text);
    $text = ereg_replace("\"module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))", "\"\\2", $text);

    /*
    ** Absolute URLs:
    */

    // rewrite 'node.php?id=<number>[&cid=<number>]' style URLs:
    $text = eregi_replace("$end/(node)\.php\?id=([[:digit:]]+)(&cid=)?([[:digit:]]*)", "$end/\\1/view/\\2/\\4", $text);

    // rewrite 'module.php?mod=<name>{&<op>=<value>}' style URLs:
    $text = ereg_replace("$end/module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "$end/\\2/\\4/\\6", $text);
    $text = ereg_replace("$end/module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "$end/\\2/\\4", $text);
    $text = ereg_replace("$end/module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))", "$end/\\2", $text);
}
Dries's avatar
   
Dries committed
634

Dries's avatar
   
Dries committed
635
636
637
  return $text;
}

Dries's avatar
   
Dries committed
638
function check_output($text) {
Dries's avatar
   
Dries committed
639
  if (isset($text)) {
Dries's avatar
   
Dries committed
640
641
642
643
    // filter content on output:
    $text = filter($text);

    // get the line breaks right:
Dries's avatar
   
Dries committed
644
    if (strip_tags($text, "<a><i><b><u><tt><code><cite><strong><img>") == $text) {
Dries's avatar
   
Dries committed
645
646
647
648
649
650
651
652
      $text = nl2br($text);
    }
  }
  else {
    $text = message_na();
  }

  return $text;
Dries's avatar
   
Dries committed
653
654
655
656
657
658
659
660
661
662
663
}

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

Dries's avatar
   
Dries committed
664
665
666
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
667
  $output .= "<channel>\n";
Dries's avatar
   
Dries committed
668
669
670
671
  $output .= " <title>". drupal_specialchars(strip_tags($title)) ."</title>\n";
  $output .= " <link>". drupal_specialchars(strip_tags($link)) ."</link>\n";
  $output .= " <description>". drupal_specialchars($description) ."</description>\n";
  $output .= " <language>". drupal_specialchars(strip_tags($language)) ."</language>\n";
Dries's avatar
   
Dries committed
672
  foreach ($args as $key => $value) {
Dries's avatar
   
Dries committed
673
    $output .= "<$key>". drupal_specialchars(strip_tags($value)) ."</$key>";
Dries's avatar
   
Dries committed
674
  }
Dries's avatar
   
Dries committed
675
676
677
678
679
680
  $output .= $items;
  $output .= "</channel>\n";

  return $output;
}

Dries's avatar
   
Dries committed
681
682
683
function format_rss_item($title, $link, $description, $args = array()) {
  // arbitrary elements may be added using the $args associative array

Dries's avatar
   
Dries committed
684
  $output .= "<item>\n";
Dries's avatar
   
Dries committed
685
686
687
  $output .= " <title>". drupal_specialchars(strip_tags($title)) ."</title>\n";
  $output .= " <link>". drupal_specialchars(strip_tags($link)) ."</link>\n";
  $output .= " <description>". drupal_specialchars(check_output($description)) ."</description>\n";
Dries's avatar
   
Dries committed
688
  foreach ($args as $key => $value) {
Dries's avatar
   
Dries committed
689
    $output .= "<$key>". drupal_specialchars(strip_tags($value)) ."</$key>";
Dries's avatar
   
Dries committed
690
  }
Dries's avatar
   
Dries committed
691
692
693
694
695
  $output .= "</item>\n";

  return $output;
}

Dries's avatar
   
Dries committed
696
697
698
699
700
701
702
703
704
705
706
707
708
709
/**
 * 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
710
function format_plural($count, $singular, $plural) {
Dries's avatar
   
Dries committed
711
  return t($count == 1 ? $singular : $plural, array("%count" => $count));
Dries's avatar
   
Dries committed
712
713
714
}

function format_size($size) {
Dries's avatar
   
Dries committed
715
  $suffix = t("bytes");
Dries's avatar
   
Dries committed
716
717
  if ($size > 1024) {
    $size = round($size / 1024, 2);
Dries's avatar
   
Dries committed
718
    $suffix = t("KB");
Dries's avatar
   
Dries committed
719
720
721
  }
  if ($size > 1024) {
    $size = round($size / 1024, 2);
Dries's avatar
   
Dries committed
722
    $suffix = t("MB");
Dries's avatar
   
Dries committed
723
  }
Dries's avatar
   
Dries committed
724
  return t("%size %suffix", array("%size" => $size, "%suffix" => $suffix));
Dries's avatar
   
Dries committed
725
726
}

Dries's avatar
   
Dries committed
727
function cache_get($key) {
Dries's avatar
   
Dries committed
728
  $cache = db_fetch_object(db_query("SELECT data, created FROM {cache} WHERE cid = '%s'", $key));
Dries's avatar
   
Dries committed
729
  return $cache->data ? $cache : 0;
Dries's avatar
   
Dries committed
730
731
732
}

function cache_set($cid, $data, $expire = 0) {
Dries's avatar
   
Dries committed
733
734
  if (db_fetch_object(db_query("SELECT cid FROM {cache} WHERE cid = '%s'", $cid))) {
    db_query("UPDATE {cache} SET data = '%s', created = %d, expire = %d WHERE cid = '%s'", $data, time(), $expire, $cid);
Dries's avatar
   
Dries committed
735
736
  }
  else {
Dries's avatar
   
Dries committed
737
    db_query("INSERT INTO {cache} (cid, data, created, expire) VALUES('%s', '%s', %d, %d)", $cid, $data, time(), $expire);
Dries's avatar
   
Dries committed
738
  }
Dries's avatar
   
Dries committed
739
740
}

Dries's avatar
   
Dries committed
741
742
function cache_clear_all($cid = NULL) {
  if (empty($cid)) {
Dries's avatar
   
Dries committed
743
    db_query("DELETE FROM {cache} WHERE expire <> 0");
Dries's avatar
   
Dries committed
744
745
  }
  else {
Dries's avatar
   
Dries committed
746
    db_query("DELETE FROM {cache} WHERE cid = '%s'", $cid);
Dries's avatar
   
Dries committed
747
  }
Dries's avatar
   
Dries committed
748
749
750
}

function page_set_cache() {
Dries's avatar
   
Dries committed
751
  global $user;
Dries's avatar
   
Dries committed
752

Dries's avatar
   
Dries committed
753
  if (!$user->uid && $_SERVER["REQUEST_METHOD"] == "GET") {
Dries's avatar
   
Dries committed
754
    if ($data = ob_get_contents()) {
Dries's avatar
   
Dries committed
755
      cache_set(request_uri(), $data, 1);
Dries's avatar
   
Dries committed
756
757
758
759
    }
  }
}

Dries's avatar
   
Dries committed
760
function page_get_cache() {
Dries's avatar
   
Dries committed
761
  global $user;
Dries's avatar
   
Dries committed
762

Dries's avatar
   
Dries committed
763
764
  $cache = NULL;

Dries's avatar
   
Dries committed
765
  if (!$user->uid && $_SERVER["REQUEST_METHOD"] == "GET") {
Dries's avatar
   
Dries committed
766
767
768
    $cache = cache_get(request_uri());

    if (empty($cache)) {
Dries's avatar
   
Dries committed
769
      ob_start();
Dries's avatar
   
Dries committed
770
771
    }
  }
Dries's avatar
   
Dries committed
772

Dries's avatar
   
Dries committed
773
  return $cache;
Dries's avatar
   
Dries committed
774
775
776
}

function format_interval($timestamp) {
Dries's avatar
   
Dries committed
777
  $units = array("1 year|%count years" => 31536000, "1 week|%count weeks" => 604800, "1 day|%count days" => 86400, "1 hour|%count hours" => 3600, "1 min|%count min" => 60, "1 sec|%count sec" => 1);
Kjartan's avatar
Kjartan committed
778
  foreach ($units as $key=>$value) {
Dries's avatar
   
Dries committed
779
780
781
782
783
784
    $key = explode("|", $key);
    if ($timestamp >= $value) {
      $output .= ($output ? " " : "") . format_plural(floor($timestamp / $value), $key[0], $key[1]);
      $timestamp %= $value;
    }
  }
Dries's avatar
   
Dries committed
785
  return ($output) ? $output : t("0 sec");
Dries's avatar
   
Dries committed
786
787
788
789
790
}

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

Kjartan's avatar
Kjartan committed
791
  $timestamp += ($user->timezone) ? $user->timezone - date("Z") : 0;
Dries's avatar
   
Dries committed
792
793
794

  switch ($type) {
    case "small":
Dries's avatar
   
Dries committed
795
      $date = date(variable_get("date_format_short", "m/d/Y - H:i"), $timestamp);
Dries's avatar
   
Dries committed
796
797
      break;
    case "medium":
798
      $date = date(variable_get("date_format_medium", "D, m/d/Y - H:i"), $timestamp);
Dries's avatar
   
Dries committed
799
800
      break;
    case "large":
801
      $date = date(variable_get("date_format_long", "l, F j, Y - H:i"), $timestamp);
Dries's avatar
   
Dries committed
802
803
804
805
      break;
    case "custom":
      for ($i = strlen($format); $i >= 0; $c = $format[--$i]) {
        if (strstr("DFlMSw", $c)) {
806
          $date = t(date($c, $timestamp)) . $date;
Dries's avatar
   
Dries committed
807
        }
Kjartan's avatar
Kjartan committed
808
        else if (strstr("AaBdgGhHiIjLmnOrstTUWYyZz", $c)) {
809
          $date = date($c, $timestamp) . $date;
Dries's avatar
   
Dries committed
810
811
        }
        else {
Kjartan's avatar
Kjartan committed
812
          $date = $c.$date;
Dries's avatar
   
Dries committed
813
814
815
816
        }
      }
      break;
    default:
817
      $date = date(variable_get("date_format_medium", "l, m/d/Y - H:i"), $timestamp);
Dries's avatar
   
Dries committed
818
819
820
821
822
823
824
  }
  return $date;
}

function format_name($object) {

  if ($object->uid && $object->name) {
Dries's avatar
   
Dries committed
825
    if (arg(0) == "admin") {
Dries's avatar
   
Dries committed
826
      $output = l($object->name, "admin/user/edit/$object->uid", array("title" => t("Administer user profile.")));
Dries's avatar
   
Dries committed
827
828
    }
    else {
Dries's avatar
   
Dries committed
829
      $output = l($object->name, "user/view/$object->uid", array("title" => t("View user profile.")));
Dries's avatar
   
Dries committed
830
    }
Dries's avatar
   
Dries committed
831
  }
Dries's avatar
   
Dries committed
832
833
834
835
836
837
838
839
840
841
  else if ($object->name) {
    /*
    ** Sometimes modules display content composed by people who are
    ** not registers members of the site (i.e. mailing list or news
    ** aggregator modules).  This clause enables modules to display
    ** the true author of the content.
    */

    $output = $object->name;
  }
Dries's avatar
   
Dries committed
842
  else {
Dries's avatar
   
Dries committed
843
    $output = t(variable_get("anonymous", "Anonymous"));
Dries's avatar
   
Dries committed
844
845
  }

Dries's avatar
   
Dries committed
846
  return $output;
Dries's avatar
   
Dries committed
847
848
849
}

function form($form, $method = "post", $action = 0, $options = 0) {
Dries's avatar
   
Dries committed
850
851

  if (!$action) {
852
    $action = request_uri();
Dries's avatar
   
Dries committed
853
  }
854
  return "<form action=\"$action\" method=\"$method\"". drupal_attributes($options) .">\n$form\n</form>\n";
Dries's avatar
   
Dries committed
855
856
857
}

function form_item($title, $value, $description = 0) {
Dries's avatar
   
Dries committed
858
  return "<div class=\"form-item\">". ($title ? "<div class=\"title\">$title:</div>" : "") . $value . ($description ? "<div class=\"description\">$description</div>" : "") ."</div>\n";
Dries's avatar
   
Dries committed
859
860
}

861
862
function form_radio($title, $name, $value = 1, $checked = 0, $description = 0, $attributes = 0) {
  return form_item(0, "<input type=\"radio\" class=\"form-radio\" name=\"edit[$name]\" value=\"". $value ."\"". ($checked ? " checked=\"checked\"" : "") . drupal_attributes($attributes) ." /> $title", $description);
Dries's avatar
   
Dries committed
863
864
}

865
866
function form_checkbox($title, $name, $value = 1, $checked = 0, $description = 0, $attributes = 0) {
  return form_hidden($name, 0) . form_item(0, "<input type=\"checkbox\" class=\"form-checkbox\" name=\"edit[$name]\" value=\"". $value ."\"". ($checked ? " checked=\"checked\"" : "") . drupal_attributes($attributes) ." /> $title", $description);
Dries's avatar
   
Dries committed
867
868
}

869
function form_textfield($title, $name, $value, $size, $maxlength, $description = 0, $attributes = 0) {
Dries's avatar
   
Dries committed
870
  $size = $size ? " size=\"$size\"" : "";
871
  return form_item($title, "<input type=\"text\" maxlength=\"$maxlength\" class=\"form-text\" name=\"edit[$name]\"$size value=\"". check_form($value) ."\"". drupal_attributes($attributes) ." />", $description);
Dries's avatar
   
Dries committed
872
873
}

874
function form_password($title, $name, $value, $size, $maxlength, $description = 0, $attributes = 0) {
Dries's avatar
   
Dries committed
875
  $size = $size ? " size=\"$size\"" : "";
876
  return form_item($title, "<input type=\"password\" class=\"form-password\" maxlength=\"$maxlength\" name=\"edit[$name]\"$size value=\"". check_form($value) ."\"". drupal_attributes($attributes) ." />", $description);
Dries's avatar
   
Dries committed
877
878
}

879
function form_textarea($title, $name, $value, $cols, $rows, $description = 0, $attributes = 0) {
Dries's avatar
   
Dries committed
880
  $cols = $cols ? " cols=\"$cols\"" : "";
Dries's avatar
   
Dries committed
881
  module_invoke_all("textarea", $name);  // eg. optionally plug in a WYSIWYG editor
882
  return form_item($title, "<textarea wrap=\"virtual\"$cols rows=\"$rows\" name=\"edit[$name]\" id=\"edit[$name]\"". drupal_attributes($attributes) .">". check_form($value) ."</textarea>", $description);
Dries's avatar
   
Dries committed
883
884
}

Dries's avatar
   
Dries committed
885
function form_select($title, $name, $value, $options, $description = 0, $extra = 0, $multiple = 0) {
Dries's avatar
   
Dries committed
886
  if (count($options) > 0) {
Kjartan's avatar
Kjartan committed
887
    foreach ($options as $key=>$choice) {
888
      $select .= "<option value=\"$key\"". (is_array($value) ? (in_array($key, $value) ? " selected=\"selected\"" : "") : ($value == $key ? " selected=\"selected\"" : "")) .">". check_form($choice) ."</option>";
Dries's avatar
   
Dries committed
889
    }
Kjartan's avatar
Kjartan committed
890
    return form_item($title, "<select name=\"edit[$name]". ($multiple ? "[]" : "") ."\"". ($multiple ? " multiple " : "") . ($extra ? " $extra" : "") .">$select</select>", $description);
Dries's avatar
   
Dries committed
891
892
893
  }
}

Dries's avatar
   
Dries committed
894
895
896
897
898
899
900
901
902
function form_radios($title, $name, $value, $options, $description = 0) {
  if (count($options) > 0) {
    foreach ($options as $key=>$choice) {
      $output .= form_radio($choice, $name, $key, ($key == $value));
    }
    return form_item($title, $output, $description);
  }
}

Dries's avatar
   
Dries committed
903
function form_file($title, $name, $size, $description = 0) {
904
  return form_item($title, "<input type=\"file\" class=\"form-file\" name=\"edit[$name]\" size=\"$size\" />\n", $description);
Dries's avatar
   
Dries committed
905
906
907
908
909
910
}

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

911
function form_submit($value, $name = "op", $attributes = 0) {
Dries's avatar
   
Dries committed
912
  return "<input type=\"submit\" class=\"form-submit\" name=\"$name\" value=\"". check_form($value) ."\" />\n";
Dries's avatar
   
Dries committed
913
914
}

Dries's avatar
   
Dries committed
915
function form_weight($title = NULL, $name = "weight", $value = 0, $delta = 10, $description = 0, $extra = 0) {
Dries's avatar
   
Dries committed
916
  for ($n = (-1 * $delta); $n <= $delta; $n++) {
Dries's avatar
   
Dries committed
917
918
919
920
921
922
    $weights[$n] = $n;
  }

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

Dries's avatar
   
Dries committed
923
924
925
926
function form_allowed_tags_text() {
  return variable_get("allowed_html", "") ? (t("Allowed HTML tags") .": ". htmlspecialchars(variable_get("allowed_html", ""))) : "";
}

Dries's avatar
   
Dries committed
927
function url($url = NULL, $query = NULL) {
Dries's avatar
   
Dries committed
928
  global $base_url;
Dries's avatar
   
Dries committed
929

Dries's avatar
   
Dries committed
930
931
932
933
934
935
936
937
938
939
940
  static $script;

  if (empty($script)) {
    /*
    ** On some webservers such as IIS we can't omit "index.php".  As such we
    ** generate "index.php?q=foo" instead of "?q=foo" on anything that is not
    ** Apache.
    */
    $script = (strpos($_SERVER["SERVER_SOFTWARE"], "Apache") === false) ? "index.php" : "";
  }

Dries's avatar
   
Dries committed
941
  if (variable_get("clean_url", "0") == "0") {
Dries's avatar
   
Dries committed
942
943
    if (isset($url)) {
      if (isset($query)) {
Dries's avatar
   
Dries committed
944
        return "$base_url/$script?q=$url&amp;$query";
Dries's avatar
   
Dries committed
945
946
      }
      else {
Dries's avatar
   
Dries committed
947
        return "$base_url/$script?q=$url";
Dries's avatar
   
Dries committed
948
      }
Dries's avatar
   
Dries committed
949
950
    }
    else {
Dries's avatar
   
Dries committed
951
      if (isset($query)) {
Dries's avatar
   
Dries committed
952
        return "$base_url/$script?$query";
Dries's avatar
   
Dries committed
953
954
      }
      else {
Dries's avatar
   
Dries committed
955
        return "$base_url/";
Dries's avatar
   
Dries committed
956
      }
Dries's avatar
   
Dries committed
957
958
959
    }
  }
  else {
Dries's avatar
   
Dries committed
960
961
    if (isset($url)) {
      if (isset($query)) {
Dries's avatar
   
Dries committed
962
        return "$base_url/$url?$query";
Dries's avatar
   
Dries committed
963
964
      }
      else {
Dries's avatar
   
Dries committed
965
        return "$base_url/$url";
Dries's avatar
   
Dries committed
966
      }
Dries's avatar
   
Dries committed
967
    }
Dries's avatar
   
Dries committed
968
    else {
Dries's avatar
   
Dries committed
969
      if (isset($query)) {
Dries's avatar
   
Dries committed
970
        return "$base_url/$script?$query";
Dries's avatar
   
Dries committed
971
972
      }
      else {
Dries's avatar
   
Dries committed
973
        return "$base_url/";
Dries's avatar
   
Dries committed
974
      }
Dries's avatar
   
Dries committed
975
    }
Dries's avatar
   
Dries committed
976
  }
Dries's avatar
   
Dries committed
977
978
}

979
980
981
982
983
984
985
function drupal_attributes($attributes = 0) {
  if (is_array($attributes)) {
    $t = array();
    foreach ($attributes as $key => $value) {
      $t[] = "$key=\"$value\"";
    }
    return " ". implode($t, " ");
Dries's avatar
   
Dries committed
986
  }
987
}
Dries's avatar
   
Dries committed
988

989
990
function l($text, $url, $attributes = array(), $query = NULL) {
  return "<a href=\"". url($url, $query) ."\"". drupal_attributes($attributes) .">$text</a>";
Dries's avatar
   
Dries committed
991
992
}

Dries's avatar
   
Dries committed
993
function field_get($string, $name) {
994
  ereg(",?$name=([^,]+)", ", $string", $regs);
Dries's avatar
   
Dries committed
995
996
997
998
999
  return $regs[1];
}

function field_set($string, $name, $value) {
  $rval = ereg_replace(",$name=[^,]+", "", ",$string");
Dries's avatar
   
Dries committed
1000
  if (isset($value)) {
Kjartan's avatar
Kjartan committed
1001
1002
    $rval .= ($rval == "," ? "" : ",") ."$name=$value";
  }
Dries's avatar
   
Dries committed
1003
1004
1005
1006
  return substr($rval, 1);
}

function link_page() {
1007
  global $custom_links;
Dries's avatar
   
Dries committed
1008

1009
  if (0 && is_array($custom_links)) {
1010
1011
1012
    return $custom_links;
  }
  else {
Dries's avatar
   
Dries committed
1013
    $links = module_invoke_all("link", "page");
1014
    array_unshift($links, l(t("home"), "", array("title" => t("Return to the main page."))));
1015
    return $links;
Dries's avatar
   
Dries committed
1016
  }
Dries's avatar
   
Dries committed
1017
}
Dries's avatar
   
Dries committed
1018
1019

function link_node($node, $main = 0) {
Dries's avatar
   
Dries committed
1020
  return module_invoke_all("link", "node", $node, $main);
Dries's avatar
   
Dries committed
1021
1022
1023
1024
}

function timer_start() {
  global $timer;
Dries's avatar
   
Dries committed
1025
1026
  list($usec, $sec) = explode(" ", microtime());
  $timer = (float)$usec + (float)$sec;
Dries's avatar
   
Dries committed
1027
1028
}

Dries's avatar
   
Dries committed
1029
function drupal_page_header() {
1030

Dries's avatar
   
Dries committed
1031
1032
1033
1034
1035
  if (variable_get("dev_timer", 0)) {
    timer_start();
  }

  if (variable_get("cache", 0)) {
Dries's avatar
   
Dries committed
1036
1037
1038
1039
    if ($cache = page_get_cache()) {
      $date = gmdate("D, d M Y H:i:s", $cache->created) ." GMT";
      header("Last-Modified: $date");
      header("ETag: \"$date\"");
1040
1041
1042
1043
1044
1045
      if (function_exists("getallheaders") && $headers = getallheaders()) {
        /*
        ** Notice that the above is an optional Apache-ism so for the
        ** time being we don't send 304 headers when "getallheaders()"
        ** is not supported (eg. on IIS webservers).
        */
Dries's avatar
   
Dries committed
1046
1047
1048
1049
1050
        if ($headers["If-Modified-Since"] == $date && $headers["If-None-Match"] == "\"$date\"") {
          header("HTTP/1.0 304 Not Modified");
          exit();
        }
      }
Dries's avatar
   
Dries committed
1051

Dries's avatar
   
Dries committed
1052
      print $cache->data;
Dries's avatar
   
Dries committed
1053
1054
1055
1056
1057
1058
1059
1060

      /*
      ** 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
1061
1062
1063
      exit();
    }
  }
Dries's avatar
   
Dries committed
1064
1065
1066
1067
1068
1069
1070
1071

  /*
  ** Putting the check here avoids SQL query overhead in case we are
  ** serving cached pages.  The downside, however, is that the init
  ** hooks might use unchecked data.
  */

  if (!user_access("bypass input data check")) {
Dries's avatar
   
Dries committed
1072
1073
1074
    if (!valid_input_data($_REQUEST)) {
      die("terminated request because of suspicious input data");
    }
Dries's avatar
   
Dries committed
1075
  }
Dries's avatar
   
Dries committed
1076
1077
}

Dries's avatar
   
Dries committed
1078
function drupal_page_footer() {
Dries's avatar
   
Dries committed
1079
  if (variable_get("cache", 0)) {
Dries's avatar
   
Dries committed
1080
    page_set_cache();
Dries's avatar
   
Dries committed
1081
  }
Dries's avatar
   
Dries committed
1082

Dries's avatar
   
Dries committed
1083
1084
1085
1086
1087
  /*
  ** A hook for modules where modules may take action at the end of a
  ** request good uses include setting a cache, page logging, etc.
  */

Dries's avatar
   
Dries committed
1088
  module_invoke_all("exit");
Dries's avatar
   
Dries committed
1089
1090
1091
}

unset($conf);
Dries's avatar
   
Dries committed
1092

1093
1094
$config = conf_init();

Dries's avatar
   
Dries committed
1095
1096
1097
1098
include_once "includes/$config.php";
include_once "includes/database.inc";
include_once "includes/module.inc";
include_once "includes/theme.inc";
Dries's avatar
   
Dries committed
1099
include_once "includes/pager.inc";
Dries's avatar
   
Dries committed
1100
include_once "includes/menu.inc";
Dries's avatar
   
Dries committed
1101
include_once "includes/xmlrpc.inc";
Dries's avatar
   
Dries committed
1102
include_once "includes/tablesort.inc";
1103

1104
1105
// initialize configuration variables, using values from conf.php if available:
$conf = variable_init(isset($conf) ? $conf : array());
Dries's avatar
   
Dries committed
1106

Dries's avatar
   
Dries committed
1107
1108
1109
// set error handler:
set_error_handler("error_handler");

Dries's avatar
   
Dries committed
1110
// spit out the correct charset http header
Dries's avatar
   
Dries committed
1111
header("Content-Type: text/html; charset=utf-8");
Dries's avatar
   
Dries committed
1112

Dries's avatar
   
Dries committed
1113
1114
1115
// initialize installed modules:
module_init();

Dries's avatar
   
Dries committed
1116
1117
1118
1119
1120
1121
// initialize localization system:
$locale = locale_init();

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

Dries's avatar
   
Dries committed
1122
?>