common.inc 24.2 KB
Newer Older
Dries Buytaert's avatar
   
Dries Buytaert committed
1
2
3
4
<?php
// $Id$

function conf_init() {
Dries Buytaert's avatar
   
Dries Buytaert committed
5
  global $HTTP_HOST, $PHP_SELF;
Dries Buytaert's avatar
   
Dries Buytaert 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 Buytaert's avatar
   
Dries Buytaert committed
13
14
15
  $uri = $PHP_SELF;

  $file = strtolower(strtr($HTTP_HOST . substr($uri, 0, strrpos($uri, "/")), "/:", ".."));
Dries Buytaert's avatar
   
Dries Buytaert 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 Buytaert's avatar
   
Dries Buytaert committed
32
  if (($errno == 1 || $errno == 2 || $errno == 4 || $errno == 256) && error_reporting()) {
Dries Buytaert's avatar
   
Dries Buytaert committed
33
    watchdog("error", $types[$errno] .": $message in $filename on line $line.");
34
    print "<pre>$entry</pre>";
Dries Buytaert's avatar
   
Dries Buytaert committed
35
36
37
  }
}

Dries Buytaert's avatar
   
Dries Buytaert committed
38
function watchdog($type, $message, $link = NULL) {
Dries Buytaert's avatar
   
Dries Buytaert committed
39
  global $user;
Dries Buytaert's avatar
   
Dries Buytaert committed
40
  db_query("INSERT INTO watchdog (uid, type, message, link, location, hostname, timestamp) VALUES ('$user->uid', '%s', '%s', '%s', '%s', '%s', '%s')", $type, $message, $link, request_uri(), getenv("REMOTE_ADDR"), time());
Dries Buytaert's avatar
   
Dries Buytaert 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 Buytaert's avatar
   
Dries Buytaert 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 Buytaert's avatar
   
Dries Buytaert committed
58
59
60
  }
}

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

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

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

Dries Buytaert's avatar
   
Dries Buytaert committed
113
function request_uri() {
Dries Buytaert's avatar
   
Dries Buytaert 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 Buytaert's avatar
   
Dries Buytaert committed
118
  if (isset($REQUEST_URI)) {
Dries Buytaert's avatar
   
Dries Buytaert committed
119
120
121
    return $REQUEST_URI;
  }
  else {
122
    return $PATH_INFO ."?". $QUERY_STRING;
Dries Buytaert's avatar
   
Dries Buytaert committed
123
  }
Dries Buytaert's avatar
   
Dries Buytaert committed
124
125
}

Dries Buytaert's avatar
   
Dries Buytaert committed
126
function message_access() {
Dries Buytaert's avatar
   
Dries Buytaert committed
127
  return t("You are not authorized to access this page.");
Dries Buytaert's avatar
   
Dries Buytaert 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 Buytaert's avatar
   
Dries Buytaert committed
138
139
140
141
142
function locale_init() {
  global $languages, $user;
  return ($languages ? (($user->uid && $user->language) ? $user->language : key($languages)) : 0);
}

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

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

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

Dries Buytaert's avatar
   
Dries Buytaert committed
159
160
  if (!$args) {
    return $string;
Kjartan Mannes's avatar
Kjartan Mannes committed
161
162
  }
  else {
Dries Buytaert's avatar
   
Dries Buytaert committed
163
164
    return strtr($string, $args);
  }
Dries Buytaert's avatar
   
Dries Buytaert 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 Buytaert's avatar
   
Dries Buytaert committed
171
      $conf[$variable->name] = unserialize($variable->value);
Dries Buytaert's avatar
   
Dries Buytaert 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 Buytaert's avatar
   
Dries Buytaert committed
187
  db_query("DELETE FROM variable WHERE name = '%s'", $name);
Dries Buytaert's avatar
   
Dries Buytaert committed
188
  db_query("INSERT INTO variable (name, value) VALUES ('%s', '%s')", $name, serialize($value));
Dries Buytaert's avatar
   
Dries Buytaert committed
189
190
191
192
193
194
195

  $conf[$name] = $value;
}

function variable_del($name) {
  global $conf;

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

  unset($conf[$name]);
}

Dries Buytaert's avatar
   
Dries Buytaert committed
201
function table_cell($cell, $header = 0) {
Dries Buytaert's avatar
   
Dries Buytaert committed
202
  if (is_array($cell)) {
Dries Buytaert's avatar
   
Dries Buytaert 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 Buytaert's avatar
   
Dries Buytaert committed
214
  if (isset($header)) {
Dries Buytaert's avatar
   
Dries Buytaert 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 Buytaert's avatar
   
Dries Buytaert committed
226
  $output .= "<table>\n";
Dries Buytaert's avatar
   
Dries Buytaert committed
227
228
229
230
231

  /*
  ** Emit the table header:
  */

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

  /*
  ** Emit the table rows:
  */

Dries Buytaert's avatar
   
Dries Buytaert 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 Buytaert's avatar
   
Dries Buytaert committed
252

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

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

  return $output;
}

Kjartan Mannes's avatar
Kjartan Mannes 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 Buytaert's avatar
   
Dries Buytaert committed
269
 *               array("count" => ..., "link" => ..., "title" => ...,
Kjartan Mannes's avatar
Kjartan Mannes committed
270
271
272
 *               "user" => ..., "date" => ..., "keywords" => ...)
 * @param $type  module type of this item
 */
Dries Buytaert's avatar
   
Dries Buytaert committed
273
function search_item($item, $type) {
Dries Buytaert's avatar
   
Dries Buytaert 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 Buytaert's avatar
   
Dries Buytaert committed
288
289
290
291

  return $output;
}

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

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

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

Kjartan Mannes's avatar
Kjartan Mannes 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 Buytaert's avatar
   
Dries Buytaert 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 Mannes's avatar
Kjartan Mannes committed
326
        $output .= " <input type=\"checkbox\" name=\"edit[type][$name]\" ". ($edit["type"][$name] ? " checked=\"checked\"" : "") ." /> ". t($name);
Dries Buytaert's avatar
   
Dries Buytaert committed
327
328
329
330
      }
    }
  }

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

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

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

  $keys = check_input($keys);

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

  return $output;
}

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

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

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

Dries Buytaert's avatar
   
Dries Buytaert committed
386

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

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

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

Dries Buytaert's avatar
   
Dries Buytaert 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 Buytaert's avatar
   
Dries Buytaert committed
401
  if (!ini_get("session.use_trans_sid") || !session_id() || strstr($url, $sid)) {
Dries Buytaert's avatar
   
Dries Buytaert committed
402
403
404
    header("Location: $url");
  }
  else {
Dries Buytaert's avatar
   
Dries Buytaert 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 Buytaert's avatar
   
Dries Buytaert 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 Buytaert's avatar
   
Dries Buytaert committed
429
  global $referer, $HTTP_REFERER;
Dries Buytaert's avatar
   
Dries Buytaert committed
430

Dries Buytaert's avatar
   
Dries Buytaert committed
431
  if (!strstr($HTTP_REFERER, request_uri())) {
Dries Buytaert's avatar
   
Dries Buytaert 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 Buytaert's avatar
   
Dries Buytaert committed
456
457
function check_query($text) {
  return addslashes(stripslashes($text));
Dries Buytaert's avatar
   
Dries Buytaert committed
458
459
}

Dries Buytaert's avatar
   
Dries Buytaert committed
460
function check_input($text) {
Dries Buytaert's avatar
   
Dries Buytaert committed
461
462
463
464
465
  return addslashes(stripslashes($text));
}

function filter($text) {
  foreach (module_list() as $name) {
Kjartan Mannes's avatar
Kjartan Mannes committed
466
467
468
    if (module_hook($name, "filter")) {
      $text = module_invoke($name, "filter", $text);
    }
Dries Buytaert's avatar
   
Dries Buytaert committed
469
470
471
472
473
  }

  return $text;
}

Dries Buytaert's avatar
   
Dries Buytaert committed
474
475
476
477
478
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 Buytaert's avatar
   
Dries Buytaert committed
479
480
  ** (ie. "on output"), however when these rewrite rules have been tested
  ** enough, we will use them to permanently rewrite the links in node
Dries Buytaert's avatar
   
Dries Buytaert committed
481
482
483
  ** and comment bodies.
  */

Dries Buytaert's avatar
   
Dries Buytaert committed
484
  // rewrite 'node.php?id=<number>[&cid=<number>]' style URLs:
Dries Buytaert's avatar
   
Dries Buytaert committed
485
  $text = eregi_replace("(node)\.php\?id=([[:digit:]]+)(&cid=)?([[:digit:]]*)", "?q=\\1/view/\\2/\\4", $text);
Dries Buytaert's avatar
   
Dries Buytaert committed
486
487
488
489
490
491
  
  // 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);
  
Dries Buytaert's avatar
   
Dries Buytaert committed
492
493
494
  return $text;
}

Dries Buytaert's avatar
   
Dries Buytaert committed
495
function check_output($text) {
Dries Buytaert's avatar
   
Dries Buytaert committed
496
  if (isset($text)) {
Dries Buytaert's avatar
   
Dries Buytaert committed
497
498
499
500

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

Dries Buytaert's avatar
   
Dries Buytaert committed
501
502
    $text = stripslashes($text);

Dries Buytaert's avatar
   
Dries Buytaert committed
503
    if (strip_tags($text, "<a><i><b><u><tt><code><cite><strong><img>") == $text) {
Dries Buytaert's avatar
   
Dries Buytaert committed
504
505
506
507
508
509
510
511
      $text = nl2br($text);
    }
  }
  else {
    $text = message_na();
  }

  return $text;
Dries Buytaert's avatar
   
Dries Buytaert committed
512
513
514
515
516
517
518
519
520
521
522
}

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

Dries Buytaert's avatar
   
Dries Buytaert committed
523
524
525
function format_rss_channel($title, $link, $description, $items, $language = "en", $args = array()) {
  // arbitrary elements may be added using the $args associative array

Dries Buytaert's avatar
   
Dries Buytaert committed
526
527
528
529
530
  $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 Buytaert's avatar
   
Dries Buytaert committed
531
  foreach ($args as $key => $value) {
532
    $output .= "<$key>". htmlentities(strip_tags($value)) ."</$key>";
Dries Buytaert's avatar
   
Dries Buytaert committed
533
  }
Dries Buytaert's avatar
   
Dries Buytaert committed
534
535
536
537
538
539
  $output .= $items;
  $output .= "</channel>\n";

  return $output;
}

Dries Buytaert's avatar
   
Dries Buytaert committed
540
541
542
function format_rss_item($title, $link, $description, $args = array()) {
  // arbitrary elements may be added using the $args associative array

Dries Buytaert's avatar
   
Dries Buytaert committed
543
544
545
  $output .= "<item>\n";
  $output .= " <title>". htmlentities(strip_tags($title)) ."</title>\n";
  $output .= " <link>". htmlentities(strip_tags($link)) ."</link>\n";
Dries Buytaert's avatar
   
Dries Buytaert committed
546
  $output .= " <description>". htmlentities(check_output($description)) ."</description>\n";
Dries Buytaert's avatar
   
Dries Buytaert committed
547
  foreach ($args as $key => $value) {
548
    $output .= "<$key>". htmlentities(strip_tags($value)) ."</$key>";
Dries Buytaert's avatar
   
Dries Buytaert committed
549
  }
Dries Buytaert's avatar
   
Dries Buytaert committed
550
551
552
553
554
555
556
557
558
559
  $output .= "</item>\n";

  return $output;
}

function format_plural($count, $singular, $plural) {
  return ($count == 1) ? "$count ". t($singular) : "$count ". t($plural);
}

function format_size($size) {
Dries Buytaert's avatar
   
Dries Buytaert committed
560
  $suffix = t("bytes");
Dries Buytaert's avatar
   
Dries Buytaert committed
561
562
  if ($size > 1024) {
    $size = round($size / 1024, 2);
Dries Buytaert's avatar
   
Dries Buytaert committed
563
    $suffix = t("KB");
Dries Buytaert's avatar
   
Dries Buytaert committed
564
565
566
  }
  if ($size > 1024) {
    $size = round($size / 1024, 2);
Dries Buytaert's avatar
   
Dries Buytaert committed
567
    $suffix = t("MB");
Dries Buytaert's avatar
   
Dries Buytaert committed
568
  }
Dries Buytaert's avatar
   
Dries Buytaert committed
569
  return t("%size %suffix", array("%size" => $size, "%suffix" => $suffix));
Dries Buytaert's avatar
   
Dries Buytaert committed
570
571
}

Dries Buytaert's avatar
   
Dries Buytaert committed
572
function cache_get($key) {
Dries Buytaert's avatar
   
Dries Buytaert committed
573
574
575
  $cache = db_fetch_object(db_query("SELECT data, created FROM cache WHERE cid = '%s'", $key));
  $created = $cache->created;
  return $cache->data ? $cache : 0;
Dries Buytaert's avatar
   
Dries Buytaert committed
576
577
578
}

function cache_set($cid, $data, $expire = 0) {
Dries Buytaert's avatar
   
Dries Buytaert committed
579
  if (db_fetch_object(db_query("SELECT cid FROM cache WHERE cid = '%s'", $cid))) {
Dries Buytaert's avatar
   
Dries Buytaert committed
580
    db_query("UPDATE cache SET data = '%s', created = %d, expire = %d WHERE cid = '%s'", $data, time(), $expire, $cid);
Dries Buytaert's avatar
   
Dries Buytaert committed
581
582
  }
  else {
Dries Buytaert's avatar
   
Dries Buytaert committed
583
    db_query("INSERT INTO cache (cid, data, created, expire) VALUES('%s', '%s', %d, %d)", $cid, $data, time(), $expire);
Dries Buytaert's avatar
   
Dries Buytaert committed
584
  }
Dries Buytaert's avatar
   
Dries Buytaert committed
585
586
}

Dries Buytaert's avatar
   
Dries Buytaert committed
587
588
function cache_clear_all($cid = NULL) {
  if (empty($cid)) {
Dries Buytaert's avatar
   
Dries Buytaert committed
589
    db_query("DELETE FROM cache WHERE expire <> 0");
Dries Buytaert's avatar
   
Dries Buytaert committed
590
591
592
593
  }
  else {
    db_query("DELETE FROM cache WHERE cid = '%s'", $cid);
  }
Dries Buytaert's avatar
   
Dries Buytaert committed
594
595
}

Dries Buytaert's avatar
   
Dries Buytaert committed
596
597
598
599
600
601
602
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 Buytaert's avatar
   
Dries Buytaert committed
603
604
605
}

function page_set_cache() {
Dries Buytaert's avatar
   
Dries Buytaert committed
606
  global $user, $REQUEST_METHOD;
Dries Buytaert's avatar
   
Dries Buytaert committed
607
608

  if (!$user->uid && $REQUEST_METHOD == "GET") {
Dries Buytaert's avatar
   
Dries Buytaert committed
609
    if ($data = ob_get_contents()) {
Dries Buytaert's avatar
   
Dries Buytaert committed
610
      cache_set(request_uri(), $data, (time() + variable_get("cache_clear", 120)));
Dries Buytaert's avatar
   
Dries Buytaert committed
611
612
613
614
    }
  }
}

Dries Buytaert's avatar
   
Dries Buytaert committed
615
function page_get_cache() {
Dries Buytaert's avatar
   
Dries Buytaert committed
616
  global $user, $REQUEST_METHOD;
Dries Buytaert's avatar
   
Dries Buytaert committed
617
618

  if (!$user->uid && $REQUEST_METHOD == "GET") {
Dries Buytaert's avatar
   
Dries Buytaert committed
619
    if ($cache = cache_get(request_uri())) {
Dries Buytaert's avatar
   
Dries Buytaert committed
620
      cache_clear_old();
Dries Buytaert's avatar
   
Dries Buytaert committed
621
622
623
    }
    else {
      ob_start();
Dries Buytaert's avatar
   
Dries Buytaert committed
624
625
    }
  }
Dries Buytaert's avatar
   
Dries Buytaert committed
626

Dries Buytaert's avatar
   
Dries Buytaert committed
627
  return $cache;
Dries Buytaert's avatar
   
Dries Buytaert committed
628
629
630
631
}

function format_interval($timestamp) {
  $units = array("year|years" => 31536000, "week|weeks" => 604800, "day|days" => 86400, "hour|hours" => 3600, "min|min" => 60, "sec|sec" => 1);
Kjartan Mannes's avatar
Kjartan Mannes committed
632
  foreach ($units as $key=>$value) {
Dries Buytaert's avatar
   
Dries Buytaert committed
633
634
635
636
637
638
    $key = explode("|", $key);
    if ($timestamp >= $value) {
      $output .= ($output ? " " : "") . format_plural(floor($timestamp / $value), $key[0], $key[1]);
      $timestamp %= $value;
    }
  }
Dries Buytaert's avatar
   
Dries Buytaert committed
639
  return ($output) ? $output : t("0 sec");
Dries Buytaert's avatar
   
Dries Buytaert committed
640
641
642
643
644
}

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

Kjartan Mannes's avatar
Kjartan Mannes committed
645
  $timestamp += ($user->timezone) ? $user->timezone - date("Z") : 0;
Dries Buytaert's avatar
   
Dries Buytaert committed
646
647
648

  switch ($type) {
    case "small":
Dries Buytaert's avatar
   
Dries Buytaert committed
649
      $date = date(variable_get("date_format", "m/d/Y - H:i"), $timestamp);
Dries Buytaert's avatar
   
Dries Buytaert committed
650
651
      break;
    case "medium":
Dries Buytaert's avatar
   
Dries Buytaert committed
652
      $date = t(date("l", $timestamp)) .", ". date(variable_get("date_format", "m/d/Y - H:i"), $timestamp);
Dries Buytaert's avatar
   
Dries Buytaert committed
653
654
655
656
657
658
659
      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)) {
660
          $date = t(date($c, $timestamp)) . $date;
Dries Buytaert's avatar
   
Dries Buytaert committed
661
        }
662
663
        else if (strstr("AaBdgGhHiIjLmnrstTUWYyZz", $c)) {
          $date = date($c, $timestamp) . $date;
Dries Buytaert's avatar
   
Dries Buytaert committed
664
665
        }
        else {
Kjartan Mannes's avatar
Kjartan Mannes committed
666
          $date = $c.$date;
Dries Buytaert's avatar
   
Dries Buytaert committed
667
668
669
670
        }
      }
      break;
    default:
Dries Buytaert's avatar
   
Dries Buytaert committed
671
      $date = t(date("l", $timestamp)) .", ". date(variable_get("date_format", "m/d/Y - H:i"), $timestamp);
Dries Buytaert's avatar
   
Dries Buytaert committed
672
673
674
675
676
  }
  return $date;
}

function format_name($object) {
Dries Buytaert's avatar
   
Dries Buytaert committed
677
  global $PHP_SELF;
Dries Buytaert's avatar
   
Dries Buytaert committed
678
679

  if ($object->uid && $object->name) {
Dries Buytaert's avatar
   
Dries Buytaert committed
680
681
    if (strstr($PHP_SELF, "admin")) {
      $output = l($object->name, "admin/user/edit/$object->uid", array("title" => t("Administer user profile.")));
Dries Buytaert's avatar
   
Dries Buytaert committed
682
683
    }
    else {
Dries Buytaert's avatar
   
Dries Buytaert committed
684
      $output = l($object->name, "user/view/$object->uid", array("title" => t("View user profile.")));
Dries Buytaert's avatar
   
Dries Buytaert committed
685
    }
Dries Buytaert's avatar
   
Dries Buytaert committed
686
687
  }
  else {
Dries Buytaert's avatar
   
Dries Buytaert committed
688
    $output = t(variable_get(anonymous, "Anonymous"));
Dries Buytaert's avatar
   
Dries Buytaert committed
689
690
  }

Dries Buytaert's avatar
   
Dries Buytaert committed
691
  return $output;
Dries Buytaert's avatar
   
Dries Buytaert committed
692
693
694
}

function form($form, $method = "post", $action = 0, $options = 0) {
695
  return "<form action=\"". ($action ? $action : htmlentities(request_uri())) ."\" method=\"$method\"". ($options ? " $options" : "") .">\n$form</form>\n";
Dries Buytaert's avatar
   
Dries Buytaert committed
696
697
698
}

function form_item($title, $value, $description = 0) {
699
  return "<p>". ($title ? "<b>$title:</b><br />" : "") . $value . ($description ? "<br /><small><i>$description</i></small>" : "") ."</p>\n";
Dries Buytaert's avatar
   
Dries Buytaert committed
700
701
}

702
703
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 Buytaert's avatar
   
Dries Buytaert committed
704
705
706
707
708
709
710
711
712
713
714
715
716
717
}

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 Buytaert's avatar
   
Dries Buytaert committed
718
function form_select($title, $name, $value, $options, $description = 0, $extra = 0, $multiple = 0) {
Dries Buytaert's avatar
   
Dries Buytaert committed
719
  if (count($options) > 0) {
Kjartan Mannes's avatar
Kjartan Mannes committed
720
    foreach ($options as $key=>$choice) {
Dries Buytaert's avatar
   
Dries Buytaert committed
721
722
      $select .= "<option value=\"$key\"". (is_array($value) ? (in_array($key, $value) ? " selected=\"selected\"" : "") : ($key == $value ? " selected=\"selected\"" : "")) .">". check_form($choice) ."</option>";
    }
Kjartan Mannes's avatar
Kjartan Mannes committed
723
    return form_item($title, "<select name=\"edit[$name]". ($multiple ? "[]" : "") ."\"". ($multiple ? " multiple " : "") . ($extra ? " $extra" : "") .">$select</select>", $description);
Dries Buytaert's avatar
   
Dries Buytaert committed
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
  }
}

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 Buytaert's avatar
   
Dries Buytaert committed
739
740
741
742
743
744
745
746
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 Buytaert's avatar
   
Dries Buytaert committed
747
function url($url = NULL, $query = NULL) {
Dries Buytaert's avatar
   
Dries Buytaert committed
748

Dries Buytaert's avatar
   
Dries Buytaert committed
749
750
  if (isset($url)) {
    if (isset($query)) {
Dries Buytaert's avatar
   
Dries Buytaert committed
751
752
753
754
755
756
757
      return "?q=$url&$query";
    }
    else {
      return "?q=$url";
    }
  }
  else {
Dries Buytaert's avatar
   
Dries Buytaert committed
758
    if (isset($query)) {
Dries Buytaert's avatar
   
Dries Buytaert committed
759
760
      return "?$query";
    }
Dries Buytaert's avatar
   
Dries Buytaert committed
761
762
763
    else {
      return "";
    }
Dries Buytaert's avatar
   
Dries Buytaert committed
764
  }
Dries Buytaert's avatar
   
Dries Buytaert committed
765
766
}

Dries Buytaert's avatar
   
Dries Buytaert committed
767
function l($text, $url, $attributes = array(), $query = NULL) {
Dries Buytaert's avatar
   
Dries Buytaert committed
768

Dries Buytaert's avatar
   
Dries Buytaert committed
769
770
771
772
  $t = array();
  foreach ($attributes as $key => $value) {
    $t[] = "$key=\"$value\"";
  }
Dries Buytaert's avatar
   
Dries Buytaert committed
773
774

  return "<a href=\"". url($url, $query) ."\" ". implode($t, " ") .">$text</a>";
Dries Buytaert's avatar
   
Dries Buytaert committed
775
776
}

Dries Buytaert's avatar
   
Dries Buytaert committed
777
function field_get($string, $name) {
Kjartan Mannes's avatar
Kjartan Mannes committed
778
  ereg(",$name=([^,]+)", ",$string", $regs);
Dries Buytaert's avatar
   
Dries Buytaert committed
779
780
781
782
783
  return $regs[1];
}

function field_set($string, $name, $value) {
  $rval = ereg_replace(",$name=[^,]+", "", ",$string");
Dries Buytaert's avatar
   
Dries Buytaert committed
784
  if (isset($value)) {
Kjartan Mannes's avatar
Kjartan Mannes committed
785
786
    $rval .= ($rval == "," ? "" : ",") ."$name=$value";
  }
Dries Buytaert's avatar
   
Dries Buytaert committed
787
788
789
790
  return substr($rval, 1);
}

function link_page() {
791
  global $custom_links;
Dries Buytaert's avatar
   
Dries Buytaert committed
792

793
794
795
796
  if (is_array($custom_links)) {
    return $custom_links;
  }
  else {
Dries Buytaert's avatar
   
Dries Buytaert committed
797
    $links[] = "<a href=\"index.php\" title=\"". t("Return to the main page.") ."\">". t("home") ."</a>";
Dries Buytaert's avatar
   
Dries Buytaert committed
798

Dries Buytaert's avatar
   
Dries Buytaert committed
799
    foreach (module_list() as $name) {
800
801
      if (module_hook($name, "link")) {
        $links = array_merge($links, module_invoke($name, "link", "page"));
Dries Buytaert's avatar
   
Dries Buytaert committed
802
      }
Dries Buytaert's avatar
   
Dries Buytaert committed
803
    }
Dries Buytaert's avatar
   
Dries Buytaert committed
804

805
    return $links;
Dries Buytaert's avatar
   
Dries Buytaert committed
806
  }
Dries Buytaert's avatar
   
Dries Buytaert committed
807
}
Dries Buytaert's avatar
   
Dries Buytaert committed
808
809

function link_node($node, $main = 0) {
Dries Buytaert's avatar
   
Dries Buytaert committed
810
811
  $links = array();

Dries Buytaert's avatar
   
Dries Buytaert committed
812
813
814
815
816
817
  foreach (module_list() as $name) {
    if (module_hook($name, "link")) {
      $links = array_merge($links, module_invoke($name, "link", "node", $node, $main));
    }
  }

Dries Buytaert's avatar
   
Dries Buytaert committed
818
  return $links;
Dries Buytaert's avatar
   
Dries Buytaert committed
819
820
821
822
}

function timer_start() {
  global $timer;
Dries Buytaert's avatar
   
Dries Buytaert committed
823
824
  list($usec, $sec) = explode(" ", microtime());
  $timer = (float)$usec + (float)$sec;
Dries Buytaert's avatar
   
Dries Buytaert committed
825
826
827
828
}

function timer_print() {
  global $timer;
Dries Buytaert's avatar
   
Dries Buytaert committed
829
830
831
832
  list($usec, $sec) = explode(" ", microtime());
  $stop = (float)$usec + (float)$sec;
  $diff = $stop - $timer;
  print "<pre>execution time: $diff sec</pre>";
Dries Buytaert's avatar
   
Dries Buytaert committed
833
834
835
836
837
838
839
}

function query_print() {
  global $queries;
  print "<pre>";
  print_r($queries);
  print "</pre>";
Dries Buytaert's avatar
   
Dries Buytaert committed
840
841
842
843
844
845
846
847
}

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

  if (variable_get("cache", 0)) {
Dries Buytaert's avatar
   
Dries Buytaert committed
848
849
850
851
852
853
854
855
856
857
858
859
    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 Buytaert's avatar
   
Dries Buytaert committed
860
861
862
863
864
865
866
867
868
869
      exit();
    }
  }
}

function page_footer() {
  if (variable_get("dev_timer", 0)) {
    timer_print();
  }

Dries Buytaert's avatar
   
Dries Buytaert committed
870
871
872
873
  if (variable_get("dev_query", 0)) {
    query_print();
  }

Dries Buytaert's avatar
   
Dries Buytaert committed
874
  if (variable_get("cache", 0)) {
Dries Buytaert's avatar
   
Dries Buytaert committed
875
    page_set_cache();
Dries Buytaert's avatar
   
Dries Buytaert committed
876
877
878
879
  }
}

unset($conf);
Dries Buytaert's avatar
   
Dries Buytaert committed
880

881
882
$config = conf_init();

Dries Buytaert's avatar
   
Dries Buytaert committed
883
884
885
886
887
include_once "includes/$config.php";
include_once "includes/database.inc";
include_once "includes/xmlrpc.inc";
include_once "includes/module.inc";
include_once "includes/theme.inc";
Dries Buytaert's avatar
   
Dries Buytaert committed
888
include_once "includes/pager.inc";
Dries Buytaert's avatar
   
Dries Buytaert committed
889
include_once "includes/menu.inc";
Dries Buytaert's avatar
   
Dries Buytaert committed
890

891
892
// initialize configuration variables, using values from conf.php if available:
$conf = variable_init(isset($conf) ? $conf : array());
Dries Buytaert's avatar
   
Dries Buytaert committed
893
894
895
896
897
898
899
900
901
902
903
904
905
906

// initialize installed modules:
module_init();

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

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

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

?>