common.inc 24.4 KB
Newer Older
Dries's avatar
 
Dries committed
1 2 3 4
<?php
// $Id$

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

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

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

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

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

  return "conf";
}

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

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

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

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

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

  global $q;
  static $arguments;

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

  return $arguments[$index];
}

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

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

  return $object;
}

function object2array($node) {

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

  return $array;
}

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

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

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

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

  global $REQUEST_URI, $PATH_INFO, $QUERY_STRING;

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

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

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

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

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

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

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

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

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

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

  return $conf;
}

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

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

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

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

  $conf[$name] = $value;
}

function variable_del($name) {
  global $conf;

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

  unset($conf[$name]);
}

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

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

  return $output;
}

function table($header, $rows) {

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

  /*
  ** Emit the table header:
  */

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

  /*
  ** Emit the table rows:
  */

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

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

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

  return $output;
}

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

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

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

  return $output;
}

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

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

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

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

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

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

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

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

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

  $keys = check_input($keys);

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

  return $output;
}

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

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

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

Dries's avatar
 
Dries committed
386

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

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

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

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

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

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

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

  exit();
}

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

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

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

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

function referer_load() {
  global $referer;

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

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

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

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

function filter($text) {
Dries's avatar
 
Dries committed
465
  return module_invoke_all("filter", $text);;
Dries's avatar
 
Dries committed
466 467
}

Dries's avatar
 
Dries committed
468 469 470 471 472
function rewrite_old_urls($text) {

  /*
  ** This is a *temporary* filter to rewrite old-style URLs to new-style
  ** URLs (clean URLs).  Currently, URLs are being rewritten dynamically
Dries's avatar
 
Dries committed
473 474
  ** (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
475 476 477
  ** and comment bodies.
  */

Dries's avatar
 
Dries committed
478
  // rewrite 'node.php?id=<number>[&cid=<number>]' style URLs:
Dries's avatar
 
Dries committed
479
  $text = eregi_replace("(node)\.php\?id=([[:digit:]]+)(&cid=)?([[:digit:]]*)", "?q=\\1/view/\\2/\\4", $text);
Dries's avatar
 
Dries committed
480 481

  // rewrite 'module.php?mod=<name>{&<op>=<value>}' style URLs:
Dries's avatar
 
Dries committed
482 483 484
  $text = ereg_replace("module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "?q=\\2/\\4/\\6" , $text);
  $text = ereg_replace("module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "?q=\\2/\\4" , $text);
  $text = ereg_replace("module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))", "?q=\\2" , $text);
Dries's avatar
 
Dries committed
485

Dries's avatar
 
Dries committed
486 487 488
  return $text;
}

Dries's avatar
 
Dries committed
489
function check_output($text) {
Dries's avatar
 
Dries committed
490
  if (isset($text)) {
Dries's avatar
 
Dries committed
491 492 493 494

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

Dries's avatar
 
Dries committed
495 496
    $text = stripslashes($text);

Dries's avatar
 
Dries committed
497
    if (strip_tags($text, "<a><i><b><u><tt><code><cite><strong><img>") == $text) {
Dries's avatar
 
Dries committed
498 499 500 501 502 503 504 505
      $text = nl2br($text);
    }
  }
  else {
    $text = message_na();
  }

  return $text;
Dries's avatar
 
Dries committed
506 507 508 509 510 511 512 513 514 515 516
}

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

Dries's avatar
 
Dries committed
517 518 519
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
520 521 522 523 524
  $output .= "<channel>\n";
  $output .= " <title>". htmlentities(strip_tags($title)) ."</title>\n";
  $output .= " <link>". htmlentities(strip_tags($link)) ."</link>\n";
  $output .= " <description>". htmlentities($description) ."</description>\n";
  $output .= " <language>". htmlentities(strip_tags($language)) ."</language>\n";
Dries's avatar
 
Dries committed
525
  foreach ($args as $key => $value) {
526
    $output .= "<$key>". htmlentities(strip_tags($value)) ."</$key>";
Dries's avatar
 
Dries committed
527
  }
Dries's avatar
 
Dries committed
528 529 530 531 532 533
  $output .= $items;
  $output .= "</channel>\n";

  return $output;
}

Dries's avatar
 
Dries committed
534 535 536
function format_rss_item($title, $link, $description, $args = array()) {
  // arbitrary elements may be added using the $args associative array

Dries's avatar
 
Dries committed
537 538 539
  $output .= "<item>\n";
  $output .= " <title>". htmlentities(strip_tags($title)) ."</title>\n";
  $output .= " <link>". htmlentities(strip_tags($link)) ."</link>\n";
Dries's avatar
 
Dries committed
540
  $output .= " <description>". htmlentities(check_output($description)) ."</description>\n";
Dries's avatar
 
Dries committed
541
  foreach ($args as $key => $value) {
542
    $output .= "<$key>". htmlentities(strip_tags($value)) ."</$key>";
Dries's avatar
 
Dries committed
543
  }
Dries's avatar
 
Dries committed
544 545 546 547 548
  $output .= "</item>\n";

  return $output;
}

Dries's avatar
 
Dries committed
549 550 551 552 553 554 555 556 557 558 559 560 561 562
/**
 * 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
563
function format_plural($count, $singular, $plural) {
Dries's avatar
 
Dries committed
564
  return t($count == 1 ? $singular : $plural, array("%count" => $count));
Dries's avatar
 
Dries committed
565 566 567
}

function format_size($size) {
Dries's avatar
 
Dries committed
568
  $suffix = t("bytes");
Dries's avatar
 
Dries committed
569 570
  if ($size > 1024) {
    $size = round($size / 1024, 2);
Dries's avatar
 
Dries committed
571
    $suffix = t("KB");
Dries's avatar
 
Dries committed
572 573 574
  }
  if ($size > 1024) {
    $size = round($size / 1024, 2);
Dries's avatar
 
Dries committed
575
    $suffix = t("MB");
Dries's avatar
 
Dries committed
576
  }
Dries's avatar
 
Dries committed
577
  return t("%size %suffix", array("%size" => $size, "%suffix" => $suffix));
Dries's avatar
 
Dries committed
578 579
}

Dries's avatar
 
Dries committed
580
function cache_get($key) {
Dries's avatar
 
Dries committed
581 582 583
  $cache = db_fetch_object(db_query("SELECT data, created FROM cache WHERE cid = '%s'", $key));
  $created = $cache->created;
  return $cache->data ? $cache : 0;
Dries's avatar
 
Dries committed
584 585 586
}

function cache_set($cid, $data, $expire = 0) {
Dries's avatar
 
Dries committed
587
  if (db_fetch_object(db_query("SELECT cid FROM cache WHERE cid = '%s'", $cid))) {
Dries's avatar
 
Dries committed
588
    db_query("UPDATE cache SET data = '%s', created = %d, expire = %d WHERE cid = '%s'", $data, time(), $expire, $cid);
Dries's avatar
 
Dries committed
589 590
  }
  else {
Dries's avatar
 
Dries committed
591
    db_query("INSERT INTO cache (cid, data, created, expire) VALUES('%s', '%s', %d, %d)", $cid, $data, time(), $expire);
Dries's avatar
 
Dries committed
592
  }
Dries's avatar
 
Dries committed
593 594
}

Dries's avatar
 
Dries committed
595 596
function cache_clear_all($cid = NULL) {
  if (empty($cid)) {
Dries's avatar
 
Dries committed
597
    db_query("DELETE FROM cache WHERE expire <> 0");
Dries's avatar
 
Dries committed
598 599 600 601
  }
  else {
    db_query("DELETE FROM cache WHERE cid = '%s'", $cid);
  }
Dries's avatar
 
Dries committed
602 603
}

Dries's avatar
 
Dries committed
604 605 606 607 608 609 610
function cache_clear_old($cid = NULL) {
  if (empty($cid)) {
    db_query("DELETE FROM cache WHERE expire < ". time() ." AND expire > 0");
  }
  else {
    db_query("DELETE FROM cache WHERE cid = '%s' AND expire < %s AND expire > 0", $cid, time());
  }
Dries's avatar
 
Dries committed
611 612 613
}

function page_set_cache() {
Dries's avatar
 
Dries committed
614
  global $user, $REQUEST_METHOD;
Dries's avatar
 
Dries committed
615 616

  if (!$user->uid && $REQUEST_METHOD == "GET") {
Dries's avatar
 
Dries committed
617
    if ($data = ob_get_contents()) {
Dries's avatar
 
Dries committed
618
      cache_set(request_uri(), $data, (time() + variable_get("cache_clear", 120)));
Dries's avatar
 
Dries committed
619 620 621 622
    }
  }
}

Dries's avatar
 
Dries committed
623
function page_get_cache() {
Dries's avatar
 
Dries committed
624
  global $user, $REQUEST_METHOD;
Dries's avatar
 
Dries committed
625 626

  if (!$user->uid && $REQUEST_METHOD == "GET") {
Dries's avatar
 
Dries committed
627
    if ($cache = cache_get(request_uri())) {
Dries's avatar
 
Dries committed
628
      cache_clear_old();
Dries's avatar
 
Dries committed
629 630 631
    }
    else {
      ob_start();
Dries's avatar
 
Dries committed
632 633
    }
  }
Dries's avatar
 
Dries committed
634

Dries's avatar
 
Dries committed
635
  return $cache;
Dries's avatar
 
Dries committed
636 637 638
}

function format_interval($timestamp) {
Dries's avatar
 
Dries committed
639
  $units = array("1 year|%count years" => 31536000, "1 week|%count weeks" => 604800, "1 day|%count days" => 86400, "1 hour|%count hours" => 3600, "1 min|%count min" => 60, "1 sec|%count sec" => 1);
Kjartan's avatar
Kjartan committed
640
  foreach ($units as $key=>$value) {
Dries's avatar
 
Dries committed
641 642 643 644 645 646
    $key = explode("|", $key);
    if ($timestamp >= $value) {
      $output .= ($output ? " " : "") . format_plural(floor($timestamp / $value), $key[0], $key[1]);
      $timestamp %= $value;
    }
  }
Dries's avatar
 
Dries committed
647
  return ($output) ? $output : t("0 sec");
Dries's avatar
 
Dries committed
648 649 650 651 652
}

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

Kjartan's avatar
Kjartan committed
653
  $timestamp += ($user->timezone) ? $user->timezone - date("Z") : 0;
Dries's avatar
 
Dries committed
654 655 656

  switch ($type) {
    case "small":
Dries's avatar
 
Dries committed
657
      $date = date(variable_get("date_format", "m/d/Y - H:i"), $timestamp);
Dries's avatar
 
Dries committed
658 659
      break;
    case "medium":
Dries's avatar
 
Dries committed
660
      $date = t(date("l", $timestamp)) .", ". date(variable_get("date_format", "m/d/Y - H:i"), $timestamp);
Dries's avatar
 
Dries committed
661 662 663 664 665 666 667
      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)) {
668
          $date = t(date($c, $timestamp)) . $date;
Dries's avatar
 
Dries committed
669
        }
670 671
        else if (strstr("AaBdgGhHiIjLmnrstTUWYyZz", $c)) {
          $date = date($c, $timestamp) . $date;
Dries's avatar
 
Dries committed
672 673
        }
        else {
Kjartan's avatar
Kjartan committed
674
          $date = $c.$date;
Dries's avatar
 
Dries committed
675 676 677 678
        }
      }
      break;
    default:
Dries's avatar
 
Dries committed
679
      $date = t(date("l", $timestamp)) .", ". date(variable_get("date_format", "m/d/Y - H:i"), $timestamp);
Dries's avatar
 
Dries committed
680 681 682 683 684
  }
  return $date;
}

function format_name($object) {
Dries's avatar
 
Dries committed
685
  global $PHP_SELF;
Dries's avatar
 
Dries committed
686 687

  if ($object->uid && $object->name) {
Dries's avatar
 
Dries committed
688 689
    if (strstr($PHP_SELF, "admin")) {
      $output = l($object->name, "admin/user/edit/$object->uid", array("title" => t("Administer user profile.")));
Dries's avatar
 
Dries committed
690 691
    }
    else {
Dries's avatar
 
Dries committed
692
      $output = l($object->name, "user/view/$object->uid", array("title" => t("View user profile.")));
Dries's avatar
 
Dries committed
693
    }
Dries's avatar
 
Dries committed
694 695
  }
  else {
Dries's avatar
 
Dries committed
696
    $output = t(variable_get(anonymous, "Anonymous"));
Dries's avatar
 
Dries committed
697 698
  }

Dries's avatar
 
Dries committed
699
  return $output;
Dries's avatar
 
Dries committed
700 701 702
}

function form($form, $method = "post", $action = 0, $options = 0) {
703
  return "<form action=\"". ($action ? $action : htmlentities(request_uri())) ."\" method=\"$method\"". ($options ? " $options" : "") .">\n$form</form>\n";
Dries's avatar
 
Dries committed
704 705 706
}

function form_item($title, $value, $description = 0) {
707
  return "<p>". ($title ? "<b>$title:</b><br />" : "") . $value . ($description ? "<br /><small><i>$description</i></small>" : "") ."</p>\n";
Dries's avatar
 
Dries committed
708 709
}

710 711
function form_checkbox($title, $name, $value = 1, $checked = 0, $description = 0) {
  return form_item(0, "<input type=\"checkbox\" name=\"edit[$name]\" value=\"". $value ."\"". ($checked ? " checked=\"checked\"" : "") ." /> $title", $description);
Dries's avatar
 
Dries committed
712 713 714 715 716 717 718 719 720 721 722 723 724 725
}

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

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

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

Dries's avatar
 
Dries committed
726
function form_select($title, $name, $value, $options, $description = 0, $extra = 0, $multiple = 0) {
Dries's avatar
 
Dries committed
727
  if (count($options) > 0) {
Kjartan's avatar
Kjartan committed
728
    foreach ($options as $key=>$choice) {
Dries's avatar
 
Dries committed
729 730
      $select .= "<option value=\"$key\"". (is_array($value) ? (in_array($key, $value) ? " selected=\"selected\"" : "") : ($key == $value ? " selected=\"selected\"" : "")) .">". check_form($choice) ."</option>";
    }
Kjartan's avatar
Kjartan committed
731
    return form_item($title, "<select name=\"edit[$name]". ($multiple ? "[]" : "") ."\"". ($multiple ? " multiple " : "") . ($extra ? " $extra" : "") .">$select</select>", $description);
Dries's avatar
 
Dries committed
732 733 734 735 736 737 738 739 740 741 742 743 744 745 746
  }
}

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

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

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

Dries's avatar
 
Dries committed
747 748 749 750 751 752 753 754
function form_weight($title = NULL, $name = "weight", $value = 0, $delta = 10, $description = 0, $extra = 0) {
  for ($n = (-1*$delta); $n <= $delta; $n++) {
    $weights[$n] = $n;
  }

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

Dries's avatar
 
Dries committed
755
function url($url = NULL, $query = NULL) {
Dries's avatar
 
Dries committed
756

Dries's avatar
 
Dries committed
757 758
  if (isset($url)) {
    if (isset($query)) {
Dries's avatar
Dries committed
759
      return "?q=$url&amp;$query";
Dries's avatar
 
Dries committed
760 761 762 763 764 765
    }
    else {
      return "?q=$url";
    }
  }
  else {
Dries's avatar
 
Dries committed
766
    if (isset($query)) {
Dries's avatar
 
Dries committed
767 768
      return "?$query";
    }
Dries's avatar
 
Dries committed
769 770 771
    else {
      return "";
    }
Dries's avatar
 
Dries committed
772
  }
Dries's avatar
 
Dries committed
773 774
}

Dries's avatar
 
Dries committed
775
function l($text, $url, $attributes = array(), $query = NULL) {
Dries's avatar
 
Dries committed
776

Dries's avatar
 
Dries committed
777 778 779 780
  $t = array();
  foreach ($attributes as $key => $value) {
    $t[] = "$key=\"$value\"";
  }
Dries's avatar
 
Dries committed
781 782

  return "<a href=\"". url($url, $query) ."\" ". implode($t, " ") .">$text</a>";
Dries's avatar
 
Dries committed
783 784
}

Dries's avatar
 
Dries committed
785
function field_get($string, $name) {
Dries's avatar
Dries committed
786
  ereg(",$name=([^,]+)", ", $string", $regs);
Dries's avatar
 
Dries committed
787 788 789 790 791
  return $regs[1];
}

function field_set($string, $name, $value) {
  $rval = ereg_replace(",$name=[^,]+", "", ",$string");
Dries's avatar
 
Dries committed
792
  if (isset($value)) {
Kjartan's avatar
Kjartan committed
793 794
    $rval .= ($rval == "," ? "" : ",") ."$name=$value";
  }
Dries's avatar
 
Dries committed
795 796 797 798
  return substr($rval, 1);
}

function link_page() {
799
  global $custom_links;
Dries's avatar
 
Dries committed
800

801 802 803 804
  if (is_array($custom_links)) {
    return $custom_links;
  }
  else {
Dries's avatar
 
Dries committed
805 806
    $links = module_invoke_all("link", "page");
    array_unshift($links, "<a href=\"index.php\" title=\"". t("Return to the main page.") ."\">". t("home") ."</a>");
807
    return $links;
Dries's avatar
 
Dries committed
808
  }
Dries's avatar
 
Dries committed
809
}
Dries's avatar
 
Dries committed
810 811

function link_node($node, $main = 0) {
Dries's avatar
 
Dries committed
812
  return module_invoke_all("link", "node", $node, $main);
Dries's avatar
 
Dries committed
813 814 815 816
}

function timer_start() {
  global $timer;
Dries's avatar
 
Dries committed
817 818
  list($usec, $sec) = explode(" ", microtime());
  $timer = (float)$usec + (float)$sec;
Dries's avatar
 
Dries committed
819 820
}

Dries's avatar
 
Dries committed
821 822 823 824 825
function query_print() {
  global $queries;
  print "<pre>";
  print_r($queries);
  print "</pre>";
Dries's avatar
 
Dries committed
826 827 828 829 830 831 832 833
}

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

  if (variable_get("cache", 0)) {
Dries's avatar
 
Dries committed
834 835 836 837 838 839 840 841 842 843 844 845
    if ($cache = page_get_cache()) {
      $date = gmdate("D, d M Y H:i:s", $cache->created) ." GMT";
      header("Last-Modified: $date");
      header("ETag: \"$date\"");
      if ($headers = getallheaders()) {
        // NOTE: the above is an Apache-ism so for the time being we don't send 304 headers to IIS servers.
        if ($headers["If-Modified-Since"] == $date && $headers["If-None-Match"] == "\"$date\"") {
          header("HTTP/1.0 304 Not Modified");
          exit();
        }
      }
      print $cache->data;
Dries's avatar
 
Dries committed
846 847 848 849 850 851
      exit();
    }
  }
}

function page_footer() {
Dries's avatar
 
Dries committed
852

Dries's avatar
 
Dries committed
853
  if (variable_get("cache", 0)) {
Dries's avatar
 
Dries committed
854
    page_set_cache();
Dries's avatar
 
Dries committed
855
  }
Dries's avatar
 
Dries committed
856 857 858 859

  // 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
860 861 862
}

unset($conf);
Dries's avatar
 
Dries committed
863

864 865
$config = conf_init();

Dries's avatar
 
Dries committed
866 867
include_once "includes/$config.php";
include_once "includes/database.inc";
Dries's avatar
 
Dries committed
868
include_once "includes/xmlrpc.inc";
Dries's avatar
 
Dries committed
869 870
include_once "includes/module.inc";
include_once "includes/theme.inc";
Dries's avatar
 
Dries committed
871
include_once "includes/pager.inc";
Dries's avatar
 
Dries committed
872
include_once "includes/menu.inc";
Dries's avatar
 
Dries committed
873

874 875
// initialize configuration variables, using values from conf.php if available:
$conf = variable_init(isset($conf) ? $conf : array());
Dries's avatar
 
Dries committed
876 877 878 879 880 881 882 883 884 885 886 887 888 889

// initialize installed modules:
module_init();

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

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

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

?>