node.module 45 KB
Newer Older
Dries's avatar
 
Dries committed
1
<?php
2
// $Id$
Dries's avatar
 
Dries committed
3

Dries's avatar
 
Dries committed
4 5 6
function node_help() {
  global $mod;

Dries's avatar
 
Dries committed
7 8 9 10 11 12 13 14 15
  $output .= "<h3>Nodes</h3>The core of the Drupal system is the node. All of the contents of the system are placed in nodes, or extensions of nodes.";
  $output .= "A base node contains:<ul><li>A Title - Up to 128 characters of text that titles the node.</li><li>A Teaser - A small block of text that is ment to get you interested in the rest of node. Drupal automatically pulls a small amount of the body of the node to make the teaser (To configure how long the teaser will be ". l("click here","admin/system/modules/node") ."). The teaser can be changed if you don't like what Drupal grabs</li><li>The Body - This is it, the heart of the matter. Your text, what we want to read.</li><li>A Type - What kind of node is this? Blog, book, forum, comment, unextended, etc.</li><li>An Author - The author's name. It will either be \"anonymous\" or a valid user. You <i>cannot</i> set it to an arbitrary value.</li>";
  $output .= "<li>Authored on - The date it was written on.</li><li>Changed - The last time this node was changed</li><li>Static on front page - The front page is configured to show the teaser's from only a few of the total nodes you have on your site (To configure how many teaser ". l("click here","admin/system/modules/node") ."), but if you think a node is important enough that you want it to stay on the front page enable this.</li><li>Allow user comments - A node can have comments, which are other nodes. These comments can be written by other users (Read-write), or only by admins (Read-only).</li>";
  $output .= "<li>Attributes - A way to sort nodes.</li><li>revisions - Drupal has a revision system so that you can \"roll back\" to an older version of a node if the new version is not what you want.</li><li>Promote to front page - To get people to look at the new stuff on your site you want to move it to the front page. So promote it too the front page.</li>";
  $output .= "<li>Moderation Status - Drupal has a moderation system. If it is active, a node is in one of three states. Approved and Published, Approved and UnPublished, and Awaiting Approval. If you are <b>not</b> moderating a node it should be Approved</li><li>votes - If you are moderating a node this counts how many votes the node has gotten. Once a node gets a certain number of vote if will either be Approved, or Dropped (To setup the number of votes needed and the promote and dump scores ". l("click here","admin/system/modules/queue") .".)</a>.</li><li>score - The score of the node is gotten by the votes it is given.</li>";
  $output .= "<li>users - The list of users who have voted on a moderated node.</li><li>Public/Published - When using Drupal's moderation system a node remains UnPublished -- unavaliable to non-moderators -- until it is marked Public/Published.</li></ul>";
  $output .= "Now that you know what is in a node, here are some of the types of nodes avalible:";

  if ($mod == "admin") {
Dries's avatar
 
Dries committed
16
    foreach (module_list() as $name) {
Dries's avatar
 
Dries committed
17
      if (module_hook($name, "node") && $name != "node") {
Dries's avatar
 
Dries committed
18 19 20
        $output .= "<h3>". t("%module type", array("%module" => ucfirst(module_invoke($name, "node", "name")))). "</h3>";
        $output .= module_invoke($name, "help");

Dries's avatar
 
Dries committed
21 22 23
      }
    }
  }
Dries's avatar
 
Dries committed
24
  return t($output);
Dries's avatar
 
Dries committed
25 26
}

27
function node_system($field){
Kjartan's avatar
Kjartan committed
28
  $system["description"] = t("The core that allows content to be submitted to the site.");
Dries's avatar
 
Dries committed
29
  $system["admin_help"] = t("Settings for the core of Drupal. Almost everything is a node so these settings will affect most of the site.");
30 31 32
  return $system[$field];
}

Dries's avatar
 
Dries committed
33 34 35 36
/*
** Accepts a DB result object which can be used to fetch node objects.
** Returns an HTML list suitable as content for a block.
*/
Dries's avatar
 
Dries committed
37 38
function node_title_list($result, $title = NULL) {
  // no queries if site is in distress
Dries's avatar
 
Dries committed
39
  if (module_exist("statistics") && throttle_status() > 3) {
Dries's avatar
 
Dries committed
40 41 42 43
    return;
  }

  while ($node = db_fetch_object($result)) {
Dries's avatar
 
Dries committed
44
    $number = module_invoke("comment", "num_all", $node->nid);
Dries's avatar
 
Dries committed
45
    $items[] = l($node->title, "node/view/$node->nid", array("title" => t("Comments: %number", array("%number" => $number))));
Dries's avatar
 
Dries committed
46 47
  }

Dries's avatar
 
Dries committed
48 49 50
  return theme("theme_node_list", $items, $title);
}

Dries's avatar
 
Dries committed
51 52
function theme_node_list($items, $title = NULL) {
  return theme("theme_item_list", $items, $title);
Dries's avatar
 
Dries committed
53 54
}

Dries's avatar
 
Dries committed
55 56 57 58 59 60 61
// Update the 'last viewed' timestamp of the specified node for current user.
function node_tag_new($nid) {
  global $user;

  if ($user->uid) {
    $nid = check_query($nid);

Dries's avatar
 
Dries committed
62
    $result = db_query("SELECT timestamp FROM history WHERE uid = %d AND nid = %d", $user->uid, $nid);
Dries's avatar
 
Dries committed
63
    if (db_fetch_object($result)) {
Dries's avatar
 
Dries committed
64
      db_query("UPDATE history SET timestamp = %d WHERE uid = %d AND nid = %d", time(), $user->uid, $nid);
Dries's avatar
 
Dries committed
65 66
    }
    else {
Dries's avatar
 
Dries committed
67
      db_query("INSERT INTO history (uid, nid, timestamp) VALUES (%d, %d, %d)", $user->uid, $nid, time());
Dries's avatar
 
Dries committed
68 69 70 71 72 73 74 75 76 77 78
    }
  }
}

/*
** Retrieves the timestamp at which the current user last viewed the
** specified node.
*/
function node_last_viewed($nid) {
  global $user;

Dries's avatar
 
Dries committed
79
  $history = db_fetch_object(db_query("SELECT timestamp FROM history WHERE uid = '$user->uid' AND nid = %d", $nid));
Dries's avatar
 
Dries committed
80 81 82 83 84 85 86 87 88 89 90 91 92
  return ($history->timestamp ? $history->timestamp : 0);
}

/**
 * Determines whether the supplied timestamp is newer than the user's last view of a given node
 *
 * @param $nid       node-id twhose history supplies the 'last viewed' timestamp
 * @param $timestamp time which is compared against node's 'last veiwed' timestamp
*/
function node_is_new($nid, $timestamp) {
  global $user;
  static $cache;

Dries's avatar
Dries committed
93
  if (!isset($cache[$nid])) {
Dries's avatar
 
Dries committed
94
    if ($user->uid) {
Dries's avatar
 
Dries committed
95
      $history = db_fetch_object(db_query("SELECT timestamp FROM history WHERE uid = %d AND nid = %d", $user->uid, $nid));
Dries's avatar
 
Dries committed
96 97 98 99 100 101 102 103 104 105 106 107 108 109 110
      $cache[$nid] = $history->timestamp ? $history->timestamp : 0;
    }
    else {
      $cache[$nid] = time();
    }
  }

  if ($timestamp > $cache[$nid]) {
    return 1;
  }
  else {
    return 0;
  }
}

Dries's avatar
 
Dries committed
111 112
function node_teaser($body) {

Dries's avatar
 
Dries committed
113 114 115 116 117 118 119 120 121 122
  $size = variable_get("teaser_length", 600);

  /*
  ** If the size is zero, teasers are disabled so we
  ** return the entire body.
  */

  if ($size == 0) {
    return $body;
  }
Dries's avatar
 
Dries committed
123 124 125 126 127 128 129 130 131 132

  /*
  ** If we have a short body, return the entire body:
  */

  if (strlen($body) < $size) {
    return $body;
  }

  /*
Dries's avatar
 
Dries committed
133
  ** If a valid delimiter has been specified, use it to
Dries's avatar
 
Dries committed
134 135
  ** chop of the teaser.  The delimiter can be outside
  ** the allowed range but no more than a factor two.
Dries's avatar
 
Dries committed
136 137
  */

Dries's avatar
Dries committed
138
  $delimiter = strpos($body, "<!--break-->");
Dries's avatar
 
Dries committed
139
  if ($delimiter > 0) {
Dries's avatar
 
Dries committed
140 141 142 143 144 145 146
    return substr($body, 0, $delimiter);
  }

  /*
  ** In some cases no delimiter has been specified (eg.
  ** when posting using the Blogger API) in which case
  ** we try to split at paragraph boundaries.
Dries's avatar
 
Dries committed
147 148
  */

Dries's avatar
 
Dries committed
149
  if ($length = strpos($body, "<br />", $size)) {
Dries's avatar
 
Dries committed
150
    return substr($body, 0, $length);
Dries's avatar
 
Dries committed
151 152 153
  }

  if ($length = strpos($body, "<br>", $size)) {
Dries's avatar
 
Dries committed
154
    return substr($body, 0, $length);
Dries's avatar
 
Dries committed
155 156 157
  }

  if ($length = strpos($body, "</p>", $size)) {
Dries's avatar
 
Dries committed
158 159 160 161 162
    return substr($body, 0, $length);
  }

  if ($length = strpos($body, "\n", $size)) {
    return substr($body, 0, $length);
Dries's avatar
 
Dries committed
163 164
  }

Dries's avatar
 
Dries committed
165
  /*
Dries's avatar
 
Dries committed
166
  ** When even the first paragraph is too long, try to
Dries's avatar
 
Dries committed
167
  ** split at the end of the next sentence.
Dries's avatar
 
Dries committed
168 169
  */

Dries's avatar
 
Dries committed
170 171 172 173 174 175 176 177 178 179 180 181 182 183 184
  if ($length = strpos($body, ". ", $size)) {
    return substr($body, 0, $length + 1);
  }

  if ($length = strpos($body, "! ", $size)) {
    return substr($body, 0, $length + 1);
  }

  if ($length = strpos($body, "? ", $size)) {
    return substr($body, 0, $length + 1);
  }

  /*
  ** Nevermind, we split it the hard way ...
  */
Dries's avatar
 
Dries committed
185

Dries's avatar
 
Dries committed
186
  return substr($body, 0, $size);
Dries's avatar
 
Dries committed
187 188
}

189
function node_invoke(&$node, $hook, $arg = 0) {
Dries's avatar
 
Dries committed
190
  if (is_array($node)) {
191
    $function = $node["type"] ."_$hook";
Dries's avatar
 
Dries committed
192 193
  }
  else if (is_object($node)) {
194
    $function = $node->type ."_$hook";
Dries's avatar
 
Dries committed
195 196
  }
  else if (is_string($node)) {
197
    $function = $node ."_$hook";
Dries's avatar
 
Dries committed
198 199 200 201 202 203 204
  }

  if (function_exists($function)) {
    return ($arg ? $function($node, $arg) : $function($node));
  }
}

205
function node_invoke_all(&$node, $hook, $op, $arg = 0) {
206 207
  $return = array();
  foreach (module_list() as $name) {
208
    if ((module_hook($name, "node") || module_hook($name, "nodeapi")) && module_hook($name, $hook)) {
209 210 211 212 213 214 215 216 217 218
      $function = $name ."_". $hook;
      $result = $function($node, $op, $arg);
      if (isset($result)) {
        $return = array_merge($return, $result);
      }
    }
  }
  return $return;
}

Dries's avatar
 
Dries committed
219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256
function node_load($conditions) {

  /*
  ** Turn the conditions into a query:
  */

  foreach ($conditions as $key => $value) {
    $cond[] = "n.". check_query($key) ." = '". check_query($value) ."'";
  }

  /*
  ** Retrieve the node:
  */

  $node = db_fetch_object(db_query("SELECT n.*, u.uid, u.name FROM node n LEFT JOIN users u ON u.uid = n.uid WHERE ". implode(" AND ", $cond)));

  /*
  ** Unserialize the revisions field:
  */

  if ($node->revisions) {
    $node->revisions = unserialize($node->revisions);
  }

  /*
  ** Call the node specific callback (if any) and piggy-back the
  ** results to the node or overwrite some values:
  */

  if ($extra = module_invoke($node->type, "load", $node)) {
    foreach ($extra as $key => $value) {
      $node->$key = $value;
    }
  }

  return $node;
}

257
function node_save($node) {
Dries's avatar
 
Dries committed
258

259 260 261 262
  /*
  ** Fetch fields to save to node table:
  */
  $fields = node_invoke_all($node, "nodeapi", "fields");
Dries's avatar
 
Dries committed
263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281

  /*
  ** Serialize the revisions field:
  */

  if ($node->revisions) {
    $node->revisions = serialize($node->revisions);
  }

  /*
  ** Apply filters to some default node fields:
  */

  if (empty($node->nid)) {

    /*
    ** Insert a new node:
    */

Dries's avatar
 
Dries committed
282
    // Set some required fields:
283 284 285
    if (!$node->created) {
      $node->created = time();
    }
Dries's avatar
 
Dries committed
286
    $node->changed = time();
Dries's avatar
 
Dries committed
287
    $node->nid = db_next_id("node_nid");
Dries's avatar
 
Dries committed
288

Dries's avatar
 
Dries committed
289
    // Prepare the query:
Dries's avatar
 
Dries committed
290 291 292 293 294 295 296
    foreach ($node as $key => $value) {
      if (in_array($key, $fields)) {
        $k[] = check_query($key);
        $v[] = "'". check_query($value) ."'";
      }
    }

Dries's avatar
 
Dries committed
297
    // Insert the node into the database:
Dries's avatar
 
Dries committed
298 299
    db_query("INSERT INTO node (". implode(", ", $k) .") VALUES (". implode(", ", $v) .")");

Dries's avatar
 
Dries committed
300
    // Call the node specific callback (if any):
301 302
    node_invoke($node, "insert");
    node_invoke_all($node, "nodeapi", "insert");
Dries's avatar
 
Dries committed
303 304 305 306 307 308 309
  }
  else {

    /*
    ** Update an existing node:
    */

Dries's avatar
 
Dries committed
310
    // Set some required fields:
Dries's avatar
 
Dries committed
311 312
    $node->changed = time();

Dries's avatar
 
Dries committed
313
    // Prepare the query:
Dries's avatar
 
Dries committed
314 315 316 317 318 319
    foreach ($node as $key => $value) {
      if (in_array($key, $fields)) {
        $q[] = check_query($key) ." = '". check_query($value) ."'";
      }
    }

Dries's avatar
 
Dries committed
320
    // Update the node in the database:
Dries's avatar
 
Dries committed
321 322
    db_query("UPDATE node SET ". implode(", ", $q) ." WHERE nid = '$node->nid'");

Dries's avatar
 
Dries committed
323
    // Call the node specific callback (if any):
324 325
    node_invoke($node, "update");
    node_invoke_all($node, "nodeapi", "update");
Dries's avatar
 
Dries committed
326 327
  }

Dries's avatar
 
Dries committed
328
  /*
Dries's avatar
 
Dries committed
329 330
  ** Clear the cache so an anonymous poster can see the node being
  ** added or updated.
Dries's avatar
 
Dries committed
331 332 333 334
  */

  cache_clear_all();

Dries's avatar
 
Dries committed
335 336 337 338 339 340 341 342 343
  /*
  ** Return the node ID:
  */

  return $node->nid;

}

function node_view($node, $main = 0) {
Dries's avatar
 
Dries committed
344

Dries's avatar
 
Dries committed
345

Dries's avatar
 
Dries committed
346
  $node = array2object($node);
Dries's avatar
 
Dries committed
347

Dries's avatar
 
Dries committed
348 349
  /*
  ** Remove the delimiter (if any) that seperates the teaser from the
Dries's avatar
Dries committed
350
  ** body. TODO: this strips legitimate uses of '<!--break-->' also.
Dries's avatar
 
Dries committed
351 352
  */

Dries's avatar
Dries committed
353
  $node->body = str_replace("<!--break-->", "", $node->body);
Dries's avatar
 
Dries committed
354

Dries's avatar
 
Dries committed
355 356 357 358 359 360 361 362 363 364 365 366 367 368
  /*
  ** The "view" hook can be implemented to overwrite the default function
  ** to display nodes.
  */

  if (module_hook($node->type, "view")) {
    node_invoke($node, "view", $main);
  }
  else {

    /*
    ** Default behavior:
    */

Dries's avatar
 
Dries committed
369 370
    $node->teaser = check_output($node->teaser);
    $node->body = check_output($node->body);
Dries's avatar
 
Dries committed
371

Dries's avatar
 
Dries committed
372
    theme("node", $node, $main);
Dries's avatar
 
Dries committed
373 374 375
  }
}

Dries's avatar
 
Dries committed
376

Dries's avatar
 
Dries committed
377
function node_show($nid, $cid) {
Dries's avatar
 
Dries committed
378
  global $revision;
Dries's avatar
 
Dries committed
379 380 381 382 383 384 385 386 387 388 389 390 391

  $node = node_load(array("status" => 1, "nid" => $nid));

  if (node_access("view", $node)) {
    if (isset($revision)) {
      $node = $node->revisions[$revision]["node"];
    }

    node_view($node);

    if (function_exists("comment_render") && $node->comment) {
      comment_render($node, $cid);
    }
Dries's avatar
 
Dries committed
392 393 394 395 396 397

    /*
    ** Update the history table, stating that this user viewed this node.
    */

    node_tag_new($node->nid);
Dries's avatar
 
Dries committed
398 399 400
  }
}

Dries's avatar
 
Dries committed
401 402
function node_access($op, $node = 0) {

Dries's avatar
 
Dries committed
403 404
  if (user_access("administer nodes")) {
    return 1;
Dries's avatar
 
Dries committed
405 406
  }

Dries's avatar
 
Dries committed
407 408 409
  /*
  ** Convert the node to an object if necessary:
  */
Dries's avatar
 
Dries committed
410

Dries's avatar
 
Dries committed
411
  $node = array2object($node);
Dries's avatar
 
Dries committed
412

Dries's avatar
 
Dries committed
413 414 415
  /*
  ** Construct a function:
  */
Dries's avatar
 
Dries committed
416

Dries's avatar
 
Dries committed
417 418 419 420 421 422
  if ($node->type) {
    $type = $node->type;
  }
  else {
    $type = $node;
  }
Dries's avatar
 
Dries committed
423

Dries's avatar
 
Dries committed
424
  $function = $type ."_access";
Dries's avatar
 
Dries committed
425

Dries's avatar
 
Dries committed
426 427 428 429 430
  if (function_exists($function)) {
    return $function($op, $node);
  }
  else {
    return 0;
Dries's avatar
 
Dries committed
431 432 433
  }
}

Dries's avatar
 
Dries committed
434
function node_perm() {
Dries's avatar
 
Dries committed
435
  return array("administer nodes", "access content");
Dries's avatar
 
Dries committed
436 437
}

Dries's avatar
 
Dries committed
438 439
function node_search($keys) {

Kjartan's avatar
Kjartan committed
440 441 442 443 444 445 446 447 448 449 450 451
  // Return the results of performing a search using the indexed search
  // for this particular type of node.
  //
  // Pass an array to the "do_search" function which dictates what it
  // will search through, and what it will search for
  //
  // "keys"'s value is the keywords entered by the user
  //
  // "type"'s value is used to identify the node type in the search
  // index.
  //
  // "select"'s value is used to relate the data from the specific nodes
Dries's avatar
 
Dries committed
452
  // table to the data that the search_index table has in it, and the the
Kjartan's avatar
Kjartan committed
453 454
  // do_search functino will rank it.
  //
Dries's avatar
 
Dries committed
455
  // The select must always provide the following fields - lno, title,
Kjartan's avatar
Kjartan committed
456 457
  // created, uid, name, count
  //
Kjartan's avatar
Kjartan committed
458
  $find = do_search(array("keys" => $keys, "type" => "node", "select" => "select s.lno as lno, n.title as title, n.created as created, u.uid as uid, u.name as name, s.count as count FROM search_index s, node n LEFT JOIN users u ON n.uid = u.uid WHERE s.lno = n.nid AND s.type = 'node' AND s.word like '%' AND n.status = 1"));
Dries's avatar
 
Dries committed
459

Dries's avatar
 
Dries committed
460 461 462
  return $find;
}

463
function node_settings() {
Dries's avatar
 
Dries committed
464
  $output .= form_select(t("Number of posts on main page"), "default_nodes_main", variable_get("default_nodes_main", 10), array(1 => 1, 2 => 2, 3 => 3, 4 => 4, 5 =>  5, 6 => 6, 7 => 7, 8 => 8, 9 => 9, 10 => 10, 15 => 15, 20 => 20, 25 => 25, 30 => 30), t("The default maximum number of posts to display on overview pages such as the main page."));
Dries's avatar
 
Dries committed
465
  $output .= form_select(t("Length of trimmed posts"), "teaser_length", variable_get("teaser_length", 600), array(0 => t("Unlimited"), 200 => t("200 characters"), 400 => t("400 characters"), 600 => t("600 characters"), 800 => t("800 characters"), 1000 => t("1000 characters"), 1200 => t("1200 characters"), 1400 => t("1400 characters"), 1600 => t("1600 characters"), 1800 => t("1800 characters"), 2000 => t("2000 characters")), t("The maximum number of characters used in the trimmed version of a post.  Drupal will use this setting to determine at which offset long posts should be trimmed.  The trimmed version of a post is typically used as a teaser when displaying the post on the main page, in XML feeds, etc.  To disable teasers, set to 'Unlimited'."));
Dries's avatar
 
Dries committed
466
  $output .= form_select(t("Preview post"), "node_preview", variable_get("node_preview", 0), array(t("Optional"), t("Required")), t("Must users preview posts before submitting?"));
Dries's avatar
 
Dries committed
467 468 469
  return $output;
}

Dries's avatar
CHANGES  
Dries committed
470
function node_conf_filters() {
Dries's avatar
 
Dries committed
471
  $output .= form_select(t("Filter HTML tags"), "filter_html", variable_get("filter_html", 0), array(t("Disabled"), t("Enabled")), t("Filter HTML and PHP tags in user-contributed content."));
472
  $output .= form_textfield(t("Allowed HTML tags"), "allowed_html", variable_get("allowed_html", "<a> <b> <dd> <dl> <dt> <i> <li> <ol> <u> <ul>"), 64, 255, t("If enabled, optionally specify tags which should not be stripped.  'STYLE' attributes, 'ON' attributes and unclosed tags are always stripped."));
Dries's avatar
 
Dries committed
473
  $output .= form_select(t("Rewrite old URLs"), "rewrite_old_urls", variable_get("rewrite_old_urls", 0), array(t("Disabled"), t("Enabled")), t("The introduction of 'clean URLs' in Drupal 4.2.0 breaks internal URLs that date back from Drupal 4.1.0 and before.  If enabled, this filter will attempt to rewrite the old style URLs to avoid broken links.  If <code>mod_rewrite</code> is available on your system, use the rewrite rules in Drupal's <code>.htaccess</code> file instead as these will also correct external referrers."));
Dries's avatar
 
Dries committed
474
  $output .= "<hr />";
Dries's avatar
CHANGES  
Dries committed
475 476 477 478 479 480 481 482 483
  return $output;
}

function node_filter_html($text) {
  $text = strip_tags($text, variable_get("allowed_html", ""));
  return $text;
}

function node_filter_link($text) {
484 485
  $pat = '\[{2}([^\|]+)(\|([^\|]+)?)?\]{2}';                   // [link|description]
  return ereg_replace($pat, $dst, $text);
Dries's avatar
 
Dries committed
486 487
}

Dries's avatar
 
Dries committed
488
function node_comment_mode($nid) {
Dries's avatar
 
Dries committed
489 490
  static $comment_mode;
  if (!isset($comment_mode[$nid])) {
Dries's avatar
 
Dries committed
491
    $comment_mode[$nid] = db_result(db_query("SELECT comment FROM node WHERE nid = %d", $nid));
Dries's avatar
 
Dries committed
492 493
  }
  return $comment_mode[$nid];
Dries's avatar
 
Dries committed
494 495
}

Dries's avatar
CHANGES  
Dries committed
496
function node_filter($text) {
Dries's avatar
 
Dries committed
497 498 499 500 501
  $text = preg_replace("/\Wstyle\s*=[^>]+?>/i", ">", $text);
  $text = preg_replace("/\Won[a-z]+\s*=[^>]+?>/i", ">", $text);
  $text = preg_replace("/\Wsrc\s*=[\s'\"]*javascript[^>]+?>/i", ">", $text);
  $text = preg_replace("/\Whref\s*=[\s'\"]*javascript:[^>]+?>/i", ">", $text);

Dries's avatar
 
Dries committed
502 503 504 505 506 507 508
  if (variable_get("filter_html", 0)) {
    $text = node_filter_html($text);
  }

  if (variable_get("rewrite_old_urls", 0)) {
    $text = rewrite_old_urls($text);
  }
Dries's avatar
 
Dries committed
509 510

  return trim($text);
Dries's avatar
CHANGES  
Dries committed
511 512
}

513
function node_link($type, $node = 0, $main = 0) {
Dries's avatar
 
Dries committed
514

Dries's avatar
 
Dries committed
515 516
  $links = array();

Dries's avatar
 
Dries committed
517
  if ($type == "page") {
Dries's avatar
 
Dries committed
518
    $links[] = l(t("submit"), "node/add", array("title" => t("Submit or suggest new content.")));
Dries's avatar
 
Dries committed
519 520
  }

Dries's avatar
 
Dries committed
521
  if ($type == "node") {
Kjartan's avatar
Kjartan committed
522 523 524
    if ($node->links) {
      $links = $node->links;
    }
Dries's avatar
 
Dries committed
525

526
    if ($main == 1 && $node->teaser && $node->teaser != $node->body) {
Dries's avatar
 
Dries committed
527
      $links[] = l(t("read more"), "node/view/$node->nid", array("title" => t("Read the rest of this posting.")));
Dries's avatar
 
Dries committed
528
    }
Dries's avatar
 
Dries committed
529 530

    if (user_access("administer nodes")) {
Dries's avatar
 
Dries committed
531
       $links[] = l(t("administer"), "admin/node/edit/$node->nid", array("title" => t("Administer this node.")));
Dries's avatar
 
Dries committed
532
    }
Dries's avatar
 
Dries committed
533 534
  }

Dries's avatar
 
Dries committed
535
  if ($type == "admin" && user_access("administer nodes")) {
Dries's avatar
 
Dries committed
536 537 538 539 540 541 542 543 544 545 546
-    $help["overview"] = t("Below is a list of all of the nodes in your site. Other content, such as ". l("comments", "admin/comment") .", are delt with in other areas.<br />Click on a node title to view the node, the author name to edit the author's user information.<br />Other work with nodes can be done with the menu on the left.");
-    $help["post-overview"] = t("Click on <a href=\"%nup\">new or updated posts</a> to see your latest nodes, or <a href=\"%queue\">approval queue</a> to approve new messages.", array("%nup" => url("admin/nodes/0"), "%queue" => url("admin/nodes/1")));
-    $help["new-update"] = t("Below is a list of the latest nodes in your site. Click on a node title to see the node, the author name to edit the author's user information , \"edit node\" to edit the node, and \"delete node\" to remove the node.");
-    $help["queue"] = t("Below is a list of the node in your site that need <b>approval</b>. To approve a node click on <b>\"edit node\"</b> and then change it's <b>moderation status</b> to Approved.<br />Click on a node title to see the node, the author name to edit the author's user information, \"edit node\" to edit the node, and \"delete node\" to remove the node.");
-    $help["search"] = t("Enter a simple pattern ( '*' maybe used as a wildcard match) to search for a post.  For example, one may search for 'br' and Drupal might return 'bread brakers', 'our daily bread' and 'brenda'.");
-    $help["setting"] = t("The default settings for the different node types.<br /><b>content type</b> - the node type. <b>comment</b> - What kind of comments are associated with the node. <b>publish</b> - is this node publicly viewable, has it been published. <b>promote</b> - Is this node to be promoted to the front page. <b>moderate</b> - Does this node need approval before it can be viewed. <b>static</b> - Is this node to stay on the front page. <b>revision</b> - Will this node go into the revision system allowing multiple versions to be saved.");

    menu("admin/node", "content management", "node_admin", $help["overview"]);
    menu("admin/node/nodes", "post overview", NULL, $help["post-overview"]);
    menu("admin/node/nodes/0", "new or updated posts", "node_admin", $help["new-update"], 0);
    menu("admin/node/nodes/1", "approval queue", "node_admin", $help["queue"], 1);
Dries's avatar
 
Dries committed
547
    menu("admin/node/search", "search posts", "node_admin", $help["search"], 8);
Dries's avatar
 
Dries committed
548 549
    menu("admin/node/help", "help", "node_help", NULL, 9);
    menu("admin/node/edit", "edit node", "node_admin", NULL, 0, 1);
Dries's avatar
 
Dries committed
550
    menu("admin/node/settings", "content settings", "node_admin", $help["setting"], 8);
Dries's avatar
 
Dries committed
551 552
  }

Dries's avatar
 
Dries committed
553
  return $links;
Dries's avatar
 
Dries committed
554 555
}

Dries's avatar
 
Dries committed
556
function node_admin_edit($node) {
Dries's avatar
 
Dries committed
557

Dries's avatar
 
Dries committed
558
  if (is_numeric($node)) {
Dries's avatar
 
Dries committed
559
    $node = node_load(array("nid" => $node));
Dries's avatar
 
Dries committed
560
  }
Dries's avatar
 
Dries committed
561

Dries's avatar
 
Dries committed
562 563 564
  /*
  ** Edit node:
  */
Dries's avatar
 
Dries committed
565

Dries's avatar
 
Dries committed
566
  $output .= "<h3>". t("Edit %module", array("%module" => module_invoke($node->type, "node", "name"))) ."</h3>";
Dries's avatar
 
Dries committed
567

Dries's avatar
 
Dries committed
568
  $output .= node_form($node);
Dries's avatar
 
Dries committed
569

Dries's avatar
 
Dries committed
570 571 572 573 574 575 576
  /*
  ** Edit revisions:
  */

  if ($node->revisions) {
    $output .= "<h3>". t("Edit revisions") ."</h3>";
    $output .= "<table border=\"1\" cellpadding=\"2\" cellspacing=\"2\">";
Dries's avatar
 
Dries committed
577
    $output .= " <tr><th>". t("older revisions") ."</th><th colspan=\"3\">". t("operations") ."</th></tr>";
Dries's avatar
 
Dries committed
578
    foreach ($node->revisions as $key => $revision) {
Dries's avatar
Dries committed
579
      $output .= " <tr><td>". t("revision #%r revised by %u on %d", array("%r" => $key, "%u" => format_name(user_load(array("uid" => $revision["uid"]))), "%d" => format_date($revision["timestamp"], "small"))) . ($revision["history"] ? "<br /><small>". $revision["history"] ."</small>" : "") ."</td><td>". l(t("view revision"), "node/view/$node->nid", array(), "revision=$key") ."</td><td>". l(t("rollback revision"), "admin/node/rollback+revision/$node->nid/$key") ."</td><td>". l(t("delete revision"), "admin/node/delete+revision/$node->nid/$key") ."</td></tr>";
Dries's avatar
 
Dries committed
580 581 582 583
    }
    $output .= "</table>";
  }

Dries's avatar
 
Dries committed
584
  /*
Dries's avatar
 
Dries committed
585
  ** Display the node form extensions:
Dries's avatar
 
Dries committed
586
  */
Dries's avatar
 
Dries committed
587

Dries's avatar
 
Dries committed
588 589
  foreach (module_list() as $name) {
    $output .= module_invoke($name, "node_link", $node);
Dries's avatar
Dries committed
590 591
  }

Dries's avatar
 
Dries committed
592
  return $output;
Dries's avatar
 
Dries committed
593 594 595

}

Dries's avatar
 
Dries committed
596
function node_admin_nodes() {
Dries's avatar
 
Dries committed
597

Dries's avatar
 
Dries committed
598
  $query = arg(3);
Dries's avatar
 
Dries committed
599
  $queries = array("ORDER BY n.changed DESC", "WHERE n.status = 0 OR n.moderate = 1 ORDER BY n.changed DESC");
Dries's avatar
Dries committed
600

Dries's avatar
 
Dries committed
601
  $result = pager_query("SELECT n.*, u.name, u.uid FROM node n LEFT JOIN users u ON n.uid = u.uid ". $queries[$query ? $query : 0], 50);
Dries's avatar
 
Dries committed
602

Dries's avatar
 
Dries committed
603 604
  $header = array(t("title"), t("type"), t("author"), t("status"), array("data" => t("operations"), "colspan" => 2));

Dries's avatar
 
Dries committed
605
  while ($node = db_fetch_object($result)) {
Dries's avatar
 
Dries committed
606
    $rows[] = array(l($node->title, "node/view/$node->nid") ." ". (node_is_new($node->nid, $node->changed) ? theme_mark() : ""), module_invoke($node->type, "node", "name"), format_name($node), ($node->status ? t("published") : t("not published")), l(t("edit node"), "admin/node/edit/$node->nid"), l(t("delete node"), "admin/node/delete/$node->nid"));
Dries's avatar
 
Dries committed
607
  }
Dries's avatar
 
Dries committed
608

Dries's avatar
 
Dries committed
609 610 611
  if ($pager = pager_display(NULL, 50, 0, "admin")) {
    $rows[] = array(array("data" => $pager, "colspan" => 6));
  }
Dries's avatar
 
Dries committed
612

Dries's avatar
 
Dries committed
613
  return table($header, $rows);
Dries's avatar
Dries committed
614 615
}

616 617 618 619 620
/*
**
*/

function node_admin_settings($edit) {
Dries's avatar
 
Dries committed
621
  $op = $_POST["op"];
Kjartan's avatar
Kjartan committed
622

623 624 625 626 627 628 629 630
  if ($op == t("Save configuration")) {
    /*
    ** Save the configuration options:
    */

    foreach ($edit as $name => $value) {
      variable_set($name, $value);
    }
631
    $output = status(t("the content settings have been saved."));
632 633 634 635 636 637 638 639 640 641
  }

  if ($op == t("Reset to defaults")) {
    /*
    ** Reset the configuration options to their default value:
    */

    foreach ($edit as $name => $value) {
      variable_del($name);
    }
642
    $output = status(t("the content settings have been reset to their default values."));
643 644
  }

645
  $header = array_merge(array(t("content type")), array_keys(node_invoke_all($node, "nodeapi", "settings")));
646 647 648 649 650 651 652 653 654 655
  foreach (module_list() as $name) {
    if (module_hook($name, "node")) {
      $node->type = $name;
      $cols = array();
      foreach (node_invoke_all($node, "nodeapi", "settings") as $setting) {
        $cols[] = array("data" => $setting, "align" => "center", "width" => 55);
      }
      $rows[] = array_merge(array(module_invoke($name, "node", "name")), $cols);
    }
  }
Kjartan's avatar
Kjartan committed
656

657
  $output .= table($header, $rows);
658

659
  /* This is an idea for the future.
660 661 662
  foreach (module_list() as $name) {
    if (module_hook($name, "node")) {
      $node->type = $name;
Kjartan's avatar
Kjartan committed
663

664 665 666 667 668 669 670 671 672 673
      // Create table() data:
      $header = array_keys(node_invoke_all($node, "nodeapi", "settings"));
      $cols = array();
      foreach (node_invoke_all($node, "nodeapi", "settings") as $setting) {
        $cols[] = array("data" => $setting, "align" => "center", "width" => 75);
      }

      $output .= "<h2>". module_invoke($name, "node", "name") ."</h2>";
      $output .= table($header, array($cols));
      $output .= "<br /><br />";
674 675
    }
  }
676
  */
677 678 679

  $output .= form_submit(t("Save configuration"));
  $output .= form_submit(t("Reset to defaults"));
Kjartan's avatar
Kjartan committed
680

681
  print form($output);
682 683 684

}

Dries's avatar
 
Dries committed
685 686 687 688 689 690 691 692 693 694 695 696
/*
** Return the revision with the specified revision number.
*/

function node_revision_load($node, $revision) {
  return $node->revisions[$revision]["node"];
}

/*
** Create and return a new revision of the given node.
*/

Dries's avatar
 
Dries committed
697 698 699
function node_revision_create($node) {
  global $user;

Dries's avatar
 
Dries committed
700 701 702 703 704
  /*
  ** 'revision' is the name of the field used to indicicate that we
  ** have to create a new revision of a node.
  */

Dries's avatar
 
Dries committed
705
  if ($node->nid && $node->revision) {
Dries's avatar
 
Dries committed
706 707 708 709
    $prev = node_load(array("nid" => $node->nid));
    $node->revisions = $prev->revisions;
    unset($prev->revisions);
    $node->revisions[] = array("uid" => $user->uid, "timestamp" => time(), "node" => $prev, "history" => $node->history);
Dries's avatar
 
Dries committed
710 711 712 713 714
  }

  return $node;
}

Dries's avatar
 
Dries committed
715 716 717
/*
** Roll-back to the revision with the specified revision number.
*/
Dries's avatar
 
Dries committed
718

Dries's avatar
 
Dries committed
719 720
function node_revision_rollback($node, $revision) {
  global $user;
Dries's avatar
 
Dries committed
721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755

  /*
  ** Extract the specified revision:
  */

  $rev = $node->revisions[$revision]["node"];

  /*
  ** Inherit all the past revisions:
  */

  $rev->revisions = $node->revisions;

  /*
  ** Save the original/current node:
  */

  $rev->revisions[] = array("uid" => $user->uid, "timestamp" => time(), "node" => $node);

  /*
  ** Remove the specified revision:
  */

  unset($rev->revisions[$revision]);

  /*
  ** Save the node:
  */

  foreach ($node as $key => $value) {
    $filter[] = $key;
  }

  node_save($rev, $filter);

Dries's avatar
 
Dries committed
756
  watchdog("special", "$node->type: rollbacked to revision #$revision of '$node->title'");
Dries's avatar
 
Dries committed
757 758
}

Dries's avatar
 
Dries committed
759 760 761 762 763
/*
** Delete the revision with specified revision number.
*/

function node_revision_delete($node, $revision) {
Dries's avatar
 
Dries committed
764 765

  unset($node->revisions[$revision]);
Dries's avatar
 
Dries committed
766

Dries's avatar
 
Dries committed
767
  node_save($node, array("nid", "revisions"));
Dries's avatar
 
Dries committed
768

Dries's avatar
 
Dries committed
769
  watchdog("special", "$node->type: removed revision #$revision of '$node->title'");
Dries's avatar
 
Dries committed
770 771
}

Dries's avatar
 
Dries committed
772 773 774 775 776 777 778 779 780 781 782
/*
** Return a list of all the existing revision numbers.
*/

function node_revision_list($node) {
  if (is_array($node->revisions)) {
    return array_keys($node->revisions);
  }
  else {
    return array();
  }
Dries's avatar
 
Dries committed
783 784
}

Dries's avatar
 
Dries committed
785
function node_admin() {
Dries's avatar
 
Dries committed
786 787
  $op = $_POST["op"];
  $edit = $_POST["edit"];
Dries's avatar
 
Dries committed
788

Dries's avatar
 
Dries committed
789
  if (user_access("administer nodes")) {
Dries's avatar
 
Dries committed
790

Dries's avatar
 
Dries committed
791 792 793 794
    if (empty($op)) {
      $op = arg(2);
    }

Dries's avatar
 
Dries committed
795 796 797
    /*
    ** Compile a list of the administrative links:
    */
Dries's avatar
Dries committed
798

Dries's avatar
 
Dries committed
799 800
    switch ($op) {
      case "search":
Dries's avatar
 
Dries committed
801
        print search_type("node", url("admin/node/search"));
Dries's avatar
 
Dries committed
802 803
        break;
      case "edit":
Dries's avatar
 
Dries committed
804
        print node_admin_edit(arg(3));
Dries's avatar
 
Dries committed
805
        break;
Dries's avatar
 
Dries committed
806
      case "delete":
Dries's avatar
 
Dries committed
807
        print node_delete(array("nid" => arg(3)));
Dries's avatar
 
Dries committed
808
        break;
Dries's avatar
 
Dries committed
809
      case "rollback+revision":
Dries's avatar
 
Dries committed
810 811
        print node_revision_rollback(node_load(array("nid" => arg(3))), arg(5));
        print node_admin_edit(arg(4));
Dries's avatar
 
Dries committed
812
        break;
Dries's avatar
 
Dries committed
813
      case "delete+revision":
Dries's avatar
 
Dries committed
814 815
        print node_revision_delete(node_load(array("nid" => arg(3))), arg(5));
        print node_admin_edit(arg(4));
Dries's avatar
 
Dries committed
816
        break;
Dries's avatar
 
Dries committed
817
      case t("Preview"):
Dries's avatar
 
Dries committed
818
        $edit = node_validate($edit, $error);
Dries's avatar
 
Dries committed
819
        print node_preview($edit);
Dries's avatar
 
Dries committed
820
        break;
Dries's avatar
 
Dries committed
821
      case t("Submit"):
Dries's avatar
 
Dries committed
822 823 824
        print node_submit($edit);
        break;
      case t("Delete"):
Dries's avatar
 
Dries committed
825
        print node_delete($edit);
Dries's avatar
 
Dries committed
826
        break;
827 828 829 830 831
      case t("Save configuration"):
      case t("Reset to defaults"):
      case "settings":
        print node_admin_settings($edit);
        break;
Dries's avatar
 
Dries committed
832
      default:
Dries's avatar
 
Dries committed
833
        print node_admin_nodes();
Dries's avatar
 
Dries committed
834 835 836 837
    }
  }
  else {
    print message_access();
Dries's avatar
 
Dries committed
838 839 840
  }
}

Dries's avatar
 
Dries committed
841
function node_block($op = "list", $delta = 0) {
Dries's avatar
 
Dries committed
842

Dries's avatar
 
Dries committed
843 844 845 846 847 848
  if ($op == "list") {
    $blocks[0]["info"] = t("Syndicate");
    return $blocks;
  }
  else {
    $block["subject"] = t("Syndicate");
Dries's avatar
 
Dries committed
849
    $block["content"] = "<div align=\"center\">". l("<img src=\"". theme("image", "xml.gif") ."\" width=\"36\" height=\"14\" border=\"0\" alt=\"XML\" />", "node/feed", array("title" => t("Read the XML version of this page."))) ."</div>";
Dries's avatar
 
Dries committed
850

Dries's avatar
 
Dries committed
851 852
    return $block;
  }
Dries's avatar
 
Dries committed
853 854
}

Kjartan's avatar
Kjartan committed
855
function node_feed($nodes = 0, $channel = array()) {
Dries's avatar
 
Dries committed
856 857
  global $base_url;

Kjartan's avatar
Kjartan committed
858
  /*
Dries's avatar
 
Dries committed
859 860 861 862 863
  ** A generic function for generating RSS feeds from a set of nodes.
  **   - $nodes should be an object as returned by db_query() which contains
  **     the nid field.
  **   - $channel is an associative array containing title, link, and
  **     description keys.
Kjartan's avatar
Kjartan committed
864
  */
Dries's avatar
 
Dries committed
865

Kjartan's avatar
Kjartan committed
866
  if (!$nodes) {
Dries's avatar
 
Dries committed
867
    $nodes = db_query_range("SELECT nid FROM node WHERE promote = '1' AND status = '1' ORDER BY created DESC", 0, 15);
Kjartan's avatar
Kjartan committed
868
  }
Dries's avatar
 
Dries committed
869

Kjartan's avatar
Kjartan committed
870 871
  while ($node = db_fetch_object($nodes)) {
    $item = node_load(array("nid" => $node->nid));
Dries's avatar
 
Dries committed
872
    $link = url("node/view/$item->nid");
Dries's avatar
 
Dries committed
873
    $items .= format_rss_item($item->title, $link, $item->teaser);
Dries's avatar
 
Dries committed
874 875
  }

Kjartan's avatar
Kjartan committed
876
  $output .= "<?xml version=\"1.0\" ". t("encoding=\"ISO-8859-1\""). "?>\n";
Kjartan's avatar
Kjartan committed
877
  $output .= "<!DOCTYPE rss [<!ENTITY % HTMLlat1 PUBLIC \"-//W3C//ENTITIES Latin 1 for XHTML//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml-lat1.ent\">]>\n";
Dries's avatar
 
Dries committed
878
    // NOTE: &eacute; - for example - is the correct ISO-8859-1 translation of  (e acute) but apparently XML parsers don't (have to) understand it.  To solve this problem, we use a DTD that defines commonly used entity such as &eacute;.
Kjartan's avatar
Kjartan committed
879 880
  if (!$channel["version"]) $channel["version"] = "0.91";
  if (!$channel["title"]) $channel["title"] = variable_get("site_name", "drupal") ." - ". variable_get("site_slogan", "");
Dries's avatar
 
Dries committed
881
  if (!$channel["link"]) $channel["link"] = $base_url;
Kjartan's avatar
Kjartan committed
882 883 884 885
  if (!$channel["description"]) $channel["description"] = variable_get("site_mission", "");
  if (!$channel["language"]) $channel["language"] = "en";
  $output .= "<rss version=\"". $channel["version"] . "\">\n";
  $output .= format_rss_channel($channel["title"], $channel["link"], $channel["description"], $items, $channel["language"]);
Dries's avatar
 
Dries committed
886 887
  $output .= "</rss>\n";

Dries's avatar
 
Dries committed
888
  header("Content-Type: text/xml");
Dries's avatar
 
Dries committed
889 890 891
  print $output;
}

892
function node_validate($node, &$error) {
Dries's avatar
 
Dries committed
893
  global $user;
894
  $error = array();
Dries's avatar
 
Dries committed
895 896 897 898 899

  /*
  ** Convert the node to an object if necessary:
  */

Dries's avatar
 
Dries committed
900
  $node = array2object($node);
Dries's avatar
 
Dries committed
901 902 903 904 905

  /*
  ** Validate the title field:
  */

Dries's avatar
 
Dries committed
906 907 908 909 910
  if (isset($node->title)) {
    $node->title = strip_tags($node->title);
    if (!$node->title) {
      $error["title"] = theme("theme_error", t("You have to specify a valid title."));
    }
Dries's avatar
 
Dries committed
911 912
  }

913 914 915 916 917 918 919 920 921 922 923 924
  /*
  ** Common default values:
  */

  $node->teaser = node_teaser($node->body);

  /*
  ** Create a new revision when required:
  */

  $node = node_revision_create($node);

Dries's avatar
 
Dries committed
925 926 927 928 929 930
  if (user_access("administer nodes")) {

    /*
    ** Setup default values if required:
    */

Dries's avatar
 
Dries committed
931 932
    if (!$node->created) {
      $node->created = time();
Dries's avatar
 
Dries committed
933 934
    }

Dries's avatar
 
Dries committed
935 936
    if (!$node->date) {
      $node->date = date("M j, Y g:i a", $node->created);
Dries's avatar
 
Dries committed
937
    }
Kjartan's avatar
Kjartan committed
938

939 940 941
    if (!is_numeric($node->status)) {
      $node->status = 1;
    }
Dries's avatar
 
Dries committed
942 943 944 945 946

    /*
    ** Validate the "authored by"-field:
    */

Dries's avatar
 
Dries committed
947 948 949 950 951 952 953 954 955
    if (empty($node->name)) {
      /*
      ** The use of empty() is mandatory in the context of usernames
      ** as the empty string denotes the anonymous user.  In case we
      ** are dealing with an anomymous user we set the user ID to 0.
      */
      $node->uid = 0;
    }
    else if ($account = user_load(array("name" => $node->name))) {
Dries's avatar
 
Dries committed
956
      $node->uid = $account->uid;
Dries's avatar
 
Dries committed
957 958
    }
    else {
959
      $error["name"] = theme("theme_error", t("The name '%u' does not exist.", array ("%u" => $node->name)));
Dries's avatar
 
Dries committed
960 961 962 963 964 965
    }

    /*
    ** Validate the "authored on"-field:
    */

Dries's avatar
 
Dries committed
966 967
    if (strtotime($node->date) > 1000) {
      $node->created = strtotime($node->date);
Dries's avatar
 
Dries committed
968 969
    }
    else {
970
      $error["date"] = theme("theme_error", t("You have to specifiy a valid date."));
Dries's avatar
 
Dries committed
971 972
    }
  }
973 974 975
  else {
    // Validate for normal users:
    $node->uid = $user->uid ? $user->uid : 0;
Kjartan's avatar
Kjartan committed
976
    // Force defaults in case people modify the form:
Kjartan's avatar
Kjartan committed
977 978 979 980 981
    $node->status = variable_get("node_status_$node->type", 1);
    $node->promote = variable_get("node_promote_$node->type