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 16 17 18 19
  $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:<dl>";
  $output .= "<dt>A Title</dt><dd>Up to 128 characters of text that titles the node.</dd>";
  $output .= "<dt>A Teaser</dt><dd>A small block of text that is meant 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.</dd>";
  $output .= "<dt>The Body</dt><dd>The main text that comprises your content.</dd>";
  $output .= "<dt>A Type</dt><dd>What kind of node is this? Blog, book, forum, comment, unextended, etc.</dd>";
  $output .= "<dt>An Author</dt><dd>The author's name. It will either be \"anonymous\" or a valid user. You <i>cannot</i> set it to an arbitrary value.</dd>";
  $output .= "<dt>Authored on</dt><dd>The date it was written on.</dd>";
  $output .= "<dt>Changed</dt><dd>The last time this node was changed.</dd>";
  $output .= "<dt>Static on front page</dt><dd>The front page is configured to show the teasers from only a few of the total nodes you have on your site (To configure how many teasers ". 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.</dd>";
  $output .= "<dt>Allow user comments</dt><dd>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).</dd>";
  $output .= "<dt>Attributes</dt><dd>A way to sort nodes.</dd><dt>Revisions</dt><dd>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.</dd>";
  $output .= "<dt>Promote to front page</dt><dd>To get people to look at the new stuff on your site you can choose to move it to the front page.</dd>";
Dries's avatar
 
Dries committed
20
  $output .= "<dt>In moderation queue</dt><dd>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 moderating a node it should be in the moderation queue.</dd>";
Dries's avatar
 
Dries committed
21 22 23 24 25
  $output .= "<dt>Votes</dt><dd>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>.</dd>";
  $output .= "<dt>Score</dt><dd>The score of the node is gotten by the votes it is given.</dd>";
  $output .= "<dt>Users</dt><dd>The list of users who have voted on a moderated node.</dd>";
  $output .= "<dt>Published</dt><dd>When using Drupal's moderation system a node remains unpublished -- unavaliable to non-moderators -- until it is marked Published.</dd></dl>";
  $output .= "<p>Now that you know what is in a node, here are some of the types of nodes available.</p>";
Dries's avatar
 
Dries committed
26 27

  if ($mod == "admin") {
Dries's avatar
 
Dries committed
28
    foreach (module_list() as $name) {
Dries's avatar
 
Dries committed
29
      if (module_hook($name, "node") && $name != "node") {
Dries's avatar
 
Dries committed
30
        $output .= "<h3>". t("Node type: %module", array("%module" => module_invoke($name, "node", "name"))). "</h3>";
Dries's avatar
 
Dries committed
31 32
        $output .= module_invoke($name, "help");

Dries's avatar
 
Dries committed
33 34 35
      }
    }
  }
Dries's avatar
 
Dries committed
36
  return t($output);
Dries's avatar
 
Dries committed
37 38
}

39
function node_system($field){
Kjartan's avatar
Kjartan committed
40
  $system["description"] = t("The core that allows content to be submitted to the site.");
Dries's avatar
 
Dries committed
41
  $system["admin_help"] = t("Settings for the core of Drupal. Almost everything is a node so these settings will affect most of the site.");
42 43 44
  return $system[$field];
}

Dries's avatar
 
Dries committed
45 46 47 48
/*
** 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
49 50
function node_title_list($result, $title = NULL) {
  while ($node = db_fetch_object($result)) {
Dries's avatar
 
Dries committed
51
    $number = module_invoke("comment", "num_all", $node->nid);
Dries's avatar
 
Dries committed
52
    $items[] = l($node->title, "node/view/$node->nid", array("title" => format_plural($number, "%count comment", "%count comments")));
Dries's avatar
 
Dries committed
53 54
  }

Dries's avatar
 
Dries committed
55 56 57
  return theme("theme_node_list", $items, $title);
}

Dries's avatar
 
Dries committed
58 59
function theme_node_list($items, $title = NULL) {
  return theme("theme_item_list", $items, $title);
Dries's avatar
 
Dries committed
60 61
}

Dries's avatar
 
Dries committed
62 63 64 65 66
// Update the 'last viewed' timestamp of the specified node for current user.
function node_tag_new($nid) {
  global $user;

  if ($user->uid) {
Dries's avatar
 
Dries committed
67
    $result = db_query("SELECT timestamp FROM history WHERE uid = %d AND nid = %d", $user->uid, $nid);
Dries's avatar
 
Dries committed
68
    if (db_fetch_object($result)) {
Dries's avatar
 
Dries committed
69
      db_query("UPDATE history SET timestamp = %d WHERE uid = %d AND nid = %d", time(), $user->uid, $nid);
Dries's avatar
 
Dries committed
70 71
    }
    else {
Dries's avatar
 
Dries committed
72
      db_query("INSERT INTO history (uid, nid, timestamp) VALUES (%d, %d, %d)", $user->uid, $nid, time());
Dries's avatar
 
Dries committed
73 74 75 76 77 78 79 80 81 82 83
    }
  }
}

/*
** 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
84
  $history = db_fetch_object(db_query("SELECT timestamp FROM history WHERE uid = '$user->uid' AND nid = %d", $nid));
Dries's avatar
 
Dries committed
85 86 87 88 89 90 91 92 93 94 95 96 97
  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
98
  if (!isset($cache[$nid])) {
Dries's avatar
 
Dries committed
99
    if ($user->uid) {
Dries's avatar
 
Dries committed
100
      $history = db_fetch_object(db_query("SELECT timestamp FROM history WHERE uid = %d AND nid = %d", $user->uid, $nid));
Dries's avatar
 
Dries committed
101 102 103 104 105 106 107 108 109 110 111 112 113 114 115
      $cache[$nid] = $history->timestamp ? $history->timestamp : 0;
    }
    else {
      $cache[$nid] = time();
    }
  }

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

Dries's avatar
 
Dries committed
116 117
function node_teaser($body) {

Dries's avatar
 
Dries committed
118 119 120 121 122 123 124 125 126 127
  $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
128 129 130 131 132 133 134 135 136 137

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

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

  /*
Dries's avatar
 
Dries committed
138
  ** If a valid delimiter has been specified, use it to
Dries's avatar
 
Dries committed
139 140
  ** chop of the teaser.  The delimiter can be outside
  ** the allowed range but no more than a factor two.
Dries's avatar
 
Dries committed
141 142
  */

Dries's avatar
Dries committed
143
  $delimiter = strpos($body, "<!--break-->");
Dries's avatar
 
Dries committed
144
  if ($delimiter > 0) {
Dries's avatar
 
Dries committed
145 146 147 148 149 150 151
    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
152 153
  */

Dries's avatar
 
Dries committed
154
  if ($length = strpos($body, "<br />", $size)) {
Dries's avatar
 
Dries committed
155
    return substr($body, 0, $length);
Dries's avatar
 
Dries committed
156 157 158
  }

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

  if ($length = strpos($body, "</p>", $size)) {
Dries's avatar
 
Dries committed
163 164 165 166 167
    return substr($body, 0, $length);
  }

  if ($length = strpos($body, "\n", $size)) {
    return substr($body, 0, $length);
Dries's avatar
 
Dries committed
168 169
  }

Dries's avatar
 
Dries committed
170
  /*
Dries's avatar
 
Dries committed
171
  ** When even the first paragraph is too long, try to
Dries's avatar
 
Dries committed
172
  ** split at the end of the next sentence.
Dries's avatar
 
Dries committed
173 174
  */

Dries's avatar
 
Dries committed
175 176 177 178 179 180 181 182 183 184 185 186 187 188 189
  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
190

Dries's avatar
 
Dries committed
191
  return substr($body, 0, $size);
Dries's avatar
 
Dries committed
192 193
}

194
function node_invoke(&$node, $hook, $arg = 0) {
Dries's avatar
 
Dries committed
195
  if (is_array($node)) {
196
    $function = $node["type"] ."_$hook";
Dries's avatar
 
Dries committed
197 198
  }
  else if (is_object($node)) {
199
    $function = $node->type ."_$hook";
Dries's avatar
 
Dries committed
200 201
  }
  else if (is_string($node)) {
202
    $function = $node ."_$hook";
Dries's avatar
 
Dries committed
203 204 205 206 207 208 209
  }

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

210
function node_invoke_all(&$node, $hook, $op, $arg = 0) {
211 212
  $return = array();
  foreach (module_list() as $name) {
213
    if ((module_hook($name, "node") || module_hook($name, "nodeapi")) && module_hook($name, $hook)) {
214 215 216 217 218 219 220 221 222 223
      $function = $name ."_". $hook;
      $result = $function($node, $op, $arg);
      if (isset($result)) {
        $return = array_merge($return, $result);
      }
    }
  }
  return $return;
}

Dries's avatar
 
Dries committed
224
function node_load($conditions, $revision = -1) {
Dries's avatar
 
Dries committed
225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258

  /*
  ** 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;
    }
  }

Dries's avatar
 
Dries committed
259 260 261 262 263 264 265
  /*
  ** Return the desired revision
  */
  if ($revision != -1 && isset($node->revisions[$revision])) {
    $node = $node->revisions[$revision]["node"];
  }

Dries's avatar
 
Dries committed
266 267 268
  return $node;
}

269
function node_save($node) {
Dries's avatar
 
Dries committed
270

271 272 273 274
  /*
  ** Fetch fields to save to node table:
  */
  $fields = node_invoke_all($node, "nodeapi", "fields");
Dries's avatar
 
Dries committed
275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293

  /*
  ** 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
294
    // Set some required fields:
295 296 297
    if (!$node->created) {
      $node->created = time();
    }
Dries's avatar
 
Dries committed
298
    $node->changed = time();
Dries's avatar
 
Dries committed
299
    $node->nid = db_next_id("node_nid");
Dries's avatar
 
Dries committed
300

Dries's avatar
 
Dries committed
301
    // Prepare the query:
Dries's avatar
 
Dries committed
302 303 304 305 306 307 308
    foreach ($node as $key => $value) {
      if (in_array($key, $fields)) {
        $k[] = check_query($key);
        $v[] = "'". check_query($value) ."'";
      }
    }

Dries's avatar
 
Dries committed
309
    // Insert the node into the database:
Dries's avatar
 
Dries committed
310 311
    db_query("INSERT INTO node (". implode(", ", $k) .") VALUES (". implode(", ", $v) .")");

Dries's avatar
 
Dries committed
312
    // Call the node specific callback (if any):
313 314
    node_invoke($node, "insert");
    node_invoke_all($node, "nodeapi", "insert");
Dries's avatar
 
Dries committed
315 316 317 318 319 320 321
  }
  else {

    /*
    ** Update an existing node:
    */

Dries's avatar
 
Dries committed
322
    // Set some required fields:
Dries's avatar
 
Dries committed
323 324
    $node->changed = time();

Dries's avatar
 
Dries committed
325
    // Prepare the query:
Dries's avatar
 
Dries committed
326 327 328 329 330 331
    foreach ($node as $key => $value) {
      if (in_array($key, $fields)) {
        $q[] = check_query($key) ." = '". check_query($value) ."'";
      }
    }

Dries's avatar
 
Dries committed
332
    // Update the node in the database:
Dries's avatar
 
Dries committed
333 334
    db_query("UPDATE node SET ". implode(", ", $q) ." WHERE nid = '$node->nid'");

Dries's avatar
 
Dries committed
335
    // Call the node specific callback (if any):
336 337
    node_invoke($node, "update");
    node_invoke_all($node, "nodeapi", "update");
Dries's avatar
 
Dries committed
338 339
  }

Dries's avatar
 
Dries committed
340
  /*
Dries's avatar
 
Dries committed
341 342
  ** Clear the cache so an anonymous poster can see the node being
  ** added or updated.
Dries's avatar
 
Dries committed
343 344 345 346
  */

  cache_clear_all();

Dries's avatar
 
Dries committed
347 348 349 350 351 352 353 354 355
  /*
  ** Return the node ID:
  */

  return $node->nid;

}

function node_view($node, $main = 0) {
Dries's avatar
 
Dries committed
356

Dries's avatar
 
Dries committed
357

Dries's avatar
 
Dries committed
358
  $node = array2object($node);
Dries's avatar
 
Dries committed
359

Dries's avatar
 
Dries committed
360 361
  /*
  ** Remove the delimiter (if any) that seperates the teaser from the
Dries's avatar
Dries committed
362
  ** body. TODO: this strips legitimate uses of '<!--break-->' also.
Dries's avatar
 
Dries committed
363 364
  */

Dries's avatar
Dries committed
365
  $node->body = str_replace("<!--break-->", "", $node->body);
Dries's avatar
 
Dries committed
366

Dries's avatar
 
Dries committed
367 368 369 370 371 372 373 374 375 376 377 378 379 380
  /*
  ** 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
381 382
    $node->teaser = check_output($node->teaser);
    $node->body = check_output($node->body);
Dries's avatar
 
Dries committed
383

Dries's avatar
 
Dries committed
384
    theme("node", $node, $main);
Dries's avatar
 
Dries committed
385 386 387
  }
}

Dries's avatar
 
Dries committed
388 389
function node_show($node, $cid) {

Dries's avatar
 
Dries committed
390 391 392 393 394 395 396
  if (node_access("view", $node)) {

    node_view($node);

    if (function_exists("comment_render") && $node->comment) {
      comment_render($node, $cid);
    }
Dries's avatar
 
Dries committed
397 398 399 400 401 402

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

    node_tag_new($node->nid);
Dries's avatar
 
Dries committed
403 404 405
  }
}

Dries's avatar
 
Dries committed
406 407
function node_access($op, $node = 0) {

Dries's avatar
 
Dries committed
408 409
  if (user_access("administer nodes")) {
    return 1;
Dries's avatar
 
Dries committed
410 411
  }

Dries's avatar
 
Dries committed
412 413 414
  /*
  ** Convert the node to an object if necessary:
  */
Dries's avatar
 
Dries committed
415

Dries's avatar
 
Dries committed
416
  $node = array2object($node);
Dries's avatar
 
Dries committed
417

Dries's avatar
 
Dries committed
418 419 420
  /*
  ** Construct a function:
  */
Dries's avatar
 
Dries committed
421

Dries's avatar
 
Dries committed
422 423 424 425 426 427
  if ($node->type) {
    $type = $node->type;
  }
  else {
    $type = $node;
  }
Dries's avatar
 
Dries committed
428

Dries's avatar
 
Dries committed
429
  $function = $type ."_access";
Dries's avatar
 
Dries committed
430

Dries's avatar
 
Dries committed
431 432 433 434 435
  if (function_exists($function)) {
    return $function($op, $node);
  }
  else {
    return 0;
Dries's avatar
 
Dries committed
436 437 438
  }
}

Dries's avatar
 
Dries committed
439
function node_perm() {
Dries's avatar
 
Dries committed
440
  return array("administer nodes", "access content");
Dries's avatar
 
Dries committed
441 442
}

Dries's avatar
 
Dries committed
443 444
function node_search($keys) {

Kjartan's avatar
Kjartan committed
445 446 447 448 449 450 451 452 453 454 455 456
  // 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
457
  // table to the data that the search_index table has in it, and the the
Kjartan's avatar
Kjartan committed
458 459
  // do_search functino will rank it.
  //
Dries's avatar
 
Dries committed
460
  // The select must always provide the following fields - lno, title,
Kjartan's avatar
Kjartan committed
461 462
  // created, uid, name, count
  //
Kjartan's avatar
Kjartan committed
463
  $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
464

Dries's avatar
 
Dries committed
465 466 467
  return $find;
}

468
function node_settings() {
Dries's avatar
 
Dries committed
469
  $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 per page on overview pages such as the main page."));
Dries's avatar
 
Dries committed
470
  $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
471
  $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
472 473 474
  return $output;
}

Dries's avatar
CHANGES  
Dries committed
475
function node_conf_filters() {
Dries's avatar
 
Dries committed
476
  $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."));
Dries's avatar
 
Dries committed
477
  $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
478
  $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
479
  $output .= "<hr />";
Dries's avatar
CHANGES  
Dries committed
480 481 482 483 484 485 486 487 488
  return $output;
}

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

function node_filter_link($text) {
489 490
  $pat = '\[{2}([^\|]+)(\|([^\|]+)?)?\]{2}';                   // [link|description]
  return ereg_replace($pat, $dst, $text);
Dries's avatar
 
Dries committed
491 492
}

Dries's avatar
 
Dries committed
493
function node_comment_mode($nid) {
Dries's avatar
 
Dries committed
494 495
  static $comment_mode;
  if (!isset($comment_mode[$nid])) {
Dries's avatar
 
Dries committed
496
    $comment_mode[$nid] = db_result(db_query("SELECT comment FROM node WHERE nid = %d", $nid));
Dries's avatar
 
Dries committed
497 498
  }
  return $comment_mode[$nid];
Dries's avatar
 
Dries committed
499 500
}

Dries's avatar
CHANGES  
Dries committed
501
function node_filter($text) {
Dries's avatar
 
Dries committed
502 503 504 505 506
  $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
507 508 509 510 511 512 513
  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
514 515

  return trim($text);
Dries's avatar
CHANGES  
Dries committed
516 517
}

518
function node_link($type, $node = 0, $main = 0) {
Dries's avatar
 
Dries committed
519

Dries's avatar
 
Dries committed
520 521
  $links = array();

Dries's avatar
 
Dries committed
522
  if ($type == "page") {
Dries's avatar
 
Dries committed
523
    $links[] = l(t("submit"), "node/add", array("title" => t("Submit or suggest new content.")));
Dries's avatar
 
Dries committed
524 525
  }

Dries's avatar
 
Dries committed
526
  if ($type == "node") {
Kjartan's avatar
Kjartan committed
527 528 529
    if ($node->links) {
      $links = $node->links;
    }
Dries's avatar
 
Dries committed
530

531
    if ($main == 1 && $node->teaser && $node->teaser != $node->body) {
Dries's avatar
 
Dries committed
532
      $links[] = l(t("read more"), "node/view/$node->nid", array("title" => t("Read the rest of this posting.")));
Dries's avatar
 
Dries committed
533
    }
Dries's avatar
 
Dries committed
534 535

    if (user_access("administer nodes")) {
Dries's avatar
 
Dries committed
536
       $links[] = l(t("administer"), "admin/node/edit/$node->nid", array("title" => t("Administer this node.")));
Dries's avatar
 
Dries committed
537
    }
Dries's avatar
 
Dries committed
538 539
  }

Dries's avatar
 
Dries committed
540
  if ($type == "admin" && user_access("administer nodes")) {
Dries's avatar
 
Dries committed
541
    $help["overview"] = t("Below is a list of all of the nodes in your site. Other forms of content are listed elsewhere (e.g. ". l("comments", "admin/comment") .").<br />Clicking a title views that node, while clicking an author's name edits their user information.<br />Other node-related tasks are available from the menu on the left.");
Dries's avatar
 
Dries committed
542
    $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/node/nodes/0"), "%queue" => url("admin/node/nodes/1")));
Dries's avatar
 
Dries committed
543 544 545 546
    $help["new-update"] = t("Below is a list of the latest nodes in your site. Clicking a title views that node, while clicking an author's name edits their user information.");
    $help["queue"] = t("Below is a list of the node in your site that await approval. To approve a node click on <b>edit node</b> and then change its moderation status to <b>approved</b>.<br />Clicking a title views that node, while clicking an author's name edits their user information.");
    $help["search"] = t("Enter a simple pattern to search for a post. This can include the wildcard character *.<br />For example, a search for \"br*\" might return \"bread bakers\", \"our daily bread\" and \"brenda\".");
    $help["setting"] = t("This pages lets you set the defaults used during creation of nodes for all the different node types.<br /><b>comment:</b> Read/write setting for comments.<br /><b>publish:</b> Is this node publicly viewable, has it been published?<br /><b>promote:</b> Is this node to be promoted to the front page?<br /><b>moderate:</b> Does this node need approval before it can be viewed?<br /><b>static:</b> Is this node always visible on the front page?<br /><b>revision:</b> Will this node go into the revision system allowing multiple versions to be saved?");
Dries's avatar
 
Dries committed
547 548 549 550 551

    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
552
    menu("admin/node/search", "search posts", "node_admin", $help["search"], 8);
Dries's avatar
 
Dries committed
553 554
    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
555
    menu("admin/node/settings", "content settings", "node_admin", $help["setting"], 8);
Dries's avatar
 
Dries committed
556 557
  }

Dries's avatar
 
Dries committed
558
  return $links;
Dries's avatar
 
Dries committed
559 560
}

Dries's avatar
 
Dries committed
561
function node_admin_edit($node) {
Dries's avatar
 
Dries committed
562

Dries's avatar
 
Dries committed
563
  if (is_numeric($node)) {
Dries's avatar
 
Dries committed
564
    $node = node_load(array("nid" => $node));
Dries's avatar
 
Dries committed
565
  }
Dries's avatar
 
Dries committed
566

Dries's avatar
 
Dries committed
567 568 569
  /*
  ** Edit node:
  */
Dries's avatar
 
Dries committed
570

Dries's avatar
 
Dries committed
571
  $output .= "<h3>". t("Edit %module", array("%module" => module_invoke($node->type, "node", "name"))) ."</h3>";
Dries's avatar
 
Dries committed
572

Dries's avatar
 
Dries committed
573
  $output .= node_form($node);
Dries's avatar
 
Dries committed
574

Dries's avatar
 
Dries committed
575 576 577 578 579 580 581
  /*
  ** Edit revisions:
  */

  if ($node->revisions) {
    $output .= "<h3>". t("Edit revisions") ."</h3>";
    $output .= "<table border=\"1\" cellpadding=\"2\" cellspacing=\"2\">";
Dries's avatar
 
Dries committed
582
    $output .= " <tr><th>". t("older revisions") ."</th><th colspan=\"3\">". t("operations") ."</th></tr>";
Dries's avatar
 
Dries committed
583
    foreach ($node->revisions as $key => $revision) {
Dries's avatar
Dries committed
584
      $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
585 586 587 588
    }
    $output .= "</table>";
  }

Dries's avatar
 
Dries committed
589
  /*
Dries's avatar
 
Dries committed
590
  ** Display the node form extensions:
Dries's avatar
 
Dries committed
591
  */
Dries's avatar
 
Dries committed
592

Dries's avatar
 
Dries committed
593 594
  foreach (module_list() as $name) {
    $output .= module_invoke($name, "node_link", $node);
Dries's avatar
Dries committed
595 596
  }

Dries's avatar
 
Dries committed
597
  return $output;
Dries's avatar
 
Dries committed
598 599 600

}

Dries's avatar
 
Dries committed
601
function node_admin_nodes() {
Dries's avatar
 
Dries committed
602

Dries's avatar
 
Dries committed
603
  $query = arg(3);
Dries's avatar
 
Dries committed
604
  $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
605

Dries's avatar
 
Dries committed
606
  $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
607

Dries's avatar
 
Dries committed
608 609
  $header = array(t("title"), t("type"), t("author"), t("status"), array("data" => t("operations"), "colspan" => 2));

Dries's avatar
 
Dries committed
610
  while ($node = db_fetch_object($result)) {
Dries's avatar
 
Dries committed
611
    $rows[] = array(l($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
612
  }
Dries's avatar
 
Dries committed
613

Dries's avatar
 
Dries committed
614 615 616
  if ($pager = pager_display(NULL, 50, 0, "admin")) {
    $rows[] = array(array("data" => $pager, "colspan" => 6));
  }
Dries's avatar
 
Dries committed
617

Dries's avatar
 
Dries committed
618
  return table($header, $rows);
Dries's avatar
Dries committed
619 620
}

621 622 623 624 625
/*
**
*/

function node_admin_settings($edit) {
Dries's avatar
 
Dries committed
626
  $op = $_POST["op"];
Kjartan's avatar
Kjartan committed
627

628 629 630 631 632 633 634 635
  if ($op == t("Save configuration")) {
    /*
    ** Save the configuration options:
    */

    foreach ($edit as $name => $value) {
      variable_set($name, $value);
    }
636
    $output = status(t("the content settings have been saved."));
637 638 639 640 641 642 643 644 645 646
  }

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

    foreach ($edit as $name => $value) {
      variable_del($name);
    }
647
    $output = status(t("the content settings have been reset to their default values."));
648 649
  }

Dries's avatar
 
Dries committed
650
  $header = array_merge(array(t("type")), array_keys(node_invoke_all($node, "nodeapi", "settings")));
651 652 653 654 655 656 657 658 659 660
  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
661

662
  $output .= table($header, $rows);
663

664
  /* This is an idea for the future.
665 666 667
  foreach (module_list() as $name) {
    if (module_hook($name, "node")) {
      $node->type = $name;
Kjartan's avatar
Kjartan committed
668

669 670 671 672 673 674 675 676 677 678
      // 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 />";
679 680
    }
  }
681
  */
682 683 684

  $output .= form_submit(t("Save configuration"));
  $output .= form_submit(t("Reset to defaults"));
Kjartan's avatar
Kjartan committed
685

686
  print form($output);
687 688 689

}

Dries's avatar
 
Dries committed
690 691 692 693 694 695 696 697 698 699 700 701
/*
** 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
702 703 704
function node_revision_create($node) {
  global $user;

Dries's avatar
 
Dries committed
705 706 707 708 709
  /*
  ** '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
710
  if ($node->nid && $node->revision) {
Dries's avatar
 
Dries committed
711 712 713 714
    $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
715 716 717 718 719
  }

  return $node;
}

Dries's avatar
 
Dries committed
720 721 722
/*
** Roll-back to the revision with the specified revision number.
*/
Dries's avatar
 
Dries committed
723

Dries's avatar
 
Dries committed
724 725
function node_revision_rollback($node, $revision) {
  global $user;
Dries's avatar
 
Dries committed
726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760

  /*
  ** 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
761
  watchdog("special", "$node->type: rollbacked to revision #$revision of '$node->title'");
Dries's avatar
 
Dries committed
762 763
}

Dries's avatar
 
Dries committed
764 765 766 767 768
/*
** Delete the revision with specified revision number.
*/

function node_revision_delete($node, $revision) {
Dries's avatar
 
Dries committed
769 770

  unset($node->revisions[$revision]);
Dries's avatar
 
Dries committed
771

Dries's avatar
 
Dries committed
772
  node_save($node, array("nid", "revisions"));
Dries's avatar
 
Dries committed
773

Dries's avatar
 
Dries committed
774
  watchdog("special", "$node->type: removed revision #$revision of '$node->title'");
Dries's avatar
 
Dries committed
775 776
}

Dries's avatar
 
Dries committed
777 778 779 780 781 782 783 784 785 786 787
/*
** 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
788 789
}

Dries's avatar
 
Dries committed
790
function node_admin() {
Dries's avatar
 
Dries committed
791 792
  $op = $_POST["op"];
  $edit = $_POST["edit"];
Dries's avatar
 
Dries committed
793

Dries's avatar
 
Dries committed
794
  if (user_access("administer nodes")) {
Dries's avatar
 
Dries committed
795

Dries's avatar
 
Dries committed
796 797 798 799
    if (empty($op)) {
      $op = arg(2);
    }

Dries's avatar
 
Dries committed
800 801 802
    /*
    ** Compile a list of the administrative links:
    */
Dries's avatar
 
Dries committed
803 804
    switch ($op) {
      case "search":
Dries's avatar
 
Dries committed
805
        print search_type("node", url("admin/node/search"));
Dries's avatar
 
Dries committed
806 807
        break;
      case "edit":
Dries's avatar
 
Dries committed
808
        print node_admin_edit(arg(3));
Dries's avatar
 
Dries committed
809
        break;
Dries's avatar
 
Dries committed
810
      case "delete":
Dries's avatar
 
Dries committed
811
        print node_delete(array("nid" => arg(3)));
Dries's avatar
 
Dries committed
812
        break;
Dries's avatar
 
Dries committed
813 814 815
      case "rollback revision":
        print node_revision_rollback(node_load(array("nid" => arg(3))), arg(4));
        print node_admin_edit(arg(3));
Dries's avatar
 
Dries committed
816
        break;
Dries's avatar
 
Dries committed
817 818 819
      case "delete revision":
        print node_revision_delete(node_load(array("nid" => arg(3))), arg(4));
        print node_admin_edit(arg(3));
Dries's avatar
 
Dries committed
820
        break;
Dries's avatar
 
Dries committed
821
      case t("Preview"):
Dries's avatar
 
Dries committed
822
        $edit = node_validate($edit, $error);
Dries's avatar
 
Dries committed
823
        print node_preview($edit, $error);
Dries's avatar
 
Dries committed
824
        break;
Dries's avatar
 
Dries committed
825
      case t("Submit"):
Dries's avatar
 
Dries committed
826 827 828
        print node_submit($edit);
        break;
      case t("Delete"):
Dries's avatar
 
Dries committed
829
        print node_delete($edit);
Dries's avatar
 
Dries committed
830
        break;
831 832 833 834 835
      case t("Save configuration"):
      case t("Reset to defaults"):
      case "settings":
        print node_admin_settings($edit);
        break;
Dries's avatar
 
Dries committed
836
      default:
Dries's avatar
 
Dries committed
837
        print node_admin_nodes();
Dries's avatar
 
Dries committed
838 839 840 841
    }
  }
  else {
    print message_access();
Dries's avatar
 
Dries committed
842 843 844
  }
}

Dries's avatar
 
Dries committed
845
function node_block($op = "list", $delta = 0) {
Dries's avatar
 
Dries committed
846

Dries's avatar
 
Dries committed
847 848 849 850 851 852
  if ($op == "list") {
    $blocks[0]["info"] = t("Syndicate");
    return $blocks;
  }
  else {
    $block["subject"] = t("Syndicate");
Dries's avatar
 
Dries committed
853
    $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
854

Dries's avatar
 
Dries committed
855 856
    return $block;
  }
Dries's avatar
 
Dries committed
857 858
}

Kjartan's avatar
Kjartan committed
859
function node_feed($nodes = 0, $channel = array()) {
Dries's avatar
 
Dries committed
860
  global $base_url, $languages;
Dries's avatar
 
Dries committed
861

Kjartan's avatar
Kjartan committed
862
  /*
Dries's avatar
 
Dries committed
863 864 865 866 867
  ** 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
868
  */
Dries's avatar
 
Dries committed
869

Kjartan's avatar
Kjartan committed
870
  if (!$nodes) {
Dries's avatar
 
Dries committed
871
    $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
872
  }
Dries's avatar
 
Dries committed
873

Kjartan's avatar
Kjartan committed
874 875
  while ($node = db_fetch_object($nodes)) {
    $item = node_load(array("nid" => $node->nid));
Dries's avatar
 
Dries committed
876
    $link = url("node/view/$item->nid");
Dries's avatar
 
Dries committed
877
    $items .= format_rss_item($item->title, $link, ($item->teaser ? $item->teaser : $item->body));
Dries's avatar
 
Dries committed
878 879
  }

Dries's avatar
 
Dries committed
880
  $output .= "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
Kjartan's avatar
Kjartan committed
881
  $output .= "<!DOCTYPE rss [<!ENTITY % HTMLlat1 PUBLIC \"-//W3C//ENTITIES Latin 1 for XHTML//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml-lat1.ent\">]>\n";
Kjartan's avatar
Kjartan committed
882 883
  if (!$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
884
  if (!$channel["link"]) $channel["link"] = $base_url;
Kjartan's avatar
Kjartan committed
885
  if (!$channel["description"]) $channel["description"] = variable_get("site_mission", "");
Dries's avatar
 
Dries committed
886 887
  foreach ($languages as $key => $value) break;
  if (!$channel["language"]) $channel["language"] = $key ? $key : "en";
Kjartan's avatar
Kjartan committed
888 889
  $output .= "<rss version=\"". $channel["version"] . "\">\n";
  $output .= format_rss_channel($channel["title"], $channel["link"], $channel["description"], $items, $channel["language"]);
Dries's avatar
 
Dries committed
890 891
  $output .= "</rss>\n";

Dries's avatar
 
Dries committed
892
  header("Content-Type: text/xml");
Dries's avatar
 
Dries committed
893 894 895
  print $output;
}

896
function node_validate($node, &$error) {
Dries's avatar
 
Dries committed
897
  global $user;
898
  $error = array();
Dries's avatar
 
Dries committed
899 900 901 902 903

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

Dries's avatar
 
Dries committed
904
  $node = array2object($node);
Dries's avatar
 
Dries committed
905 906 907 908 909

  /*
  ** Validate the title field:
  */

Dries's avatar
 
Dries committed
910 911 912 913 914
  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
915 916
  }

917 918 919 920 921 922 923 924 925 926 927 928
  /*
  ** 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
929 930 931 932 933 934
  if (user_access("administer nodes")) {

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

Dries's avatar
 
Dries committed
935 936
    if (!$node->created) {
      $node->created = time();
Dries's avatar
 
Dries committed
937 938
    }

Dries's avatar
 
Dries committed
939 940
    if (!$node->date) {
      $node->date = date("M j, Y g:i a", $node->created);
Dries's avatar
 
Dries committed
941
    }
Kjartan's avatar
Kjartan committed
942

943 944 945
    if (!is_numeric($node->status)) {
      $node->status = 1;
    }
Dries's avatar
 
Dries committed
946 947 948 949 950

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

Dries's avatar
 
Dries committed
951 952 953 954 955 956 957 958 959
    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
960
      $node->uid = $account->uid;
Dries's avatar
 
Dries committed
961 962
    }
    else {
963
      $error["name"] = theme("theme_error", t("The name '%u' does not exist.", array ("%u" => $node->name)));
Dries's avatar
 
Dries committed
964 965 966 967 968 969
    }

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

Dries's avatar
 
Dries committed
970 971
    if (strtotime($node->date) > 1000) {
      $node->created = strtotime($node->date);
Dries's avatar
 
Dries committed
972 973
    }
    else {