node.module 32.1 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
7
8
function node_help() {
  global $mod;

  if ($mod == "node") {
    foreach (module_list() as $name) {
Dries's avatar
   
Dries committed
9
      if (module_hook($name, "node") && $name != "node") {
Dries's avatar
   
Dries committed
10
        print "<h3>". ucfirst($name) ." type</h3>";
Dries's avatar
   
Dries committed
11
12
13
14
15
16
        print module_invoke($name, "help");
      }
    }
  }
}

Dries's avatar
   
Dries committed
17
// DEPRICATED: still used by themes, yet doesn't return anything at the moment
Dries's avatar
   
Dries committed
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
function node_index() {
}

function node_teaser($body) {

  $size = 400;

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

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

  /*
  ** If we have a long body, try not to split paragraphs:
  */

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

  /*
  ** If we have a long body, try not to split sentences:
  */

  return substr($body, 0, strpos($body, ". ", $size) + 1);

}

function node_invoke($node, $name, $arg = 0) {
  if (is_array($node)) {
Kjartan's avatar
Kjartan committed
51
    $function = $node["type"] ."_$name";
Dries's avatar
   
Dries committed
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
  }
  else if (is_object($node)) {
    $function = $node->type ."_$name";
  }
  else if (is_string($node)) {
    $function = $node ."_$name";
  }

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

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;
}

function node_save($node, $filter) {

105
  $fields = array("nid", "uid", "type", "title", "teaser", "body", "revisions", "score", "status", "comment", "promote", "static", "moderate", "created", "changed", "users", "votes");
Dries's avatar
   
Dries committed
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147

  foreach ($filter as $key => $value) {
    /*
    ** Only save those fields specified by the filter.  If the filter
    ** does not specify a default value, use the value of the $node's
    ** corresponding field instead.
    */

    if (is_numeric($key)) {
      if (isset($node->$value)) {
          // The above check is mandatory.
        $edit->$value = $node->$value;
      }
    }
    else {
      if (isset($value)) {
          // The above check is mandatory.
        $edit->$key = $value;
      }
    }
  }

  $node = $edit;

  /*
  ** 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
148
    // Set some required fields:
Dries's avatar
   
Dries committed
149
    $node->created = time();
Dries's avatar
   
Dries committed
150
    $node->changed = time();
Dries's avatar
   
Dries committed
151
    $node->nid = db_result(db_query("SELECT MAX(nid) + 1 FROM node"));
152
    $node->nid = empty($node->nid) ? 1 : $node->nid; 
Dries's avatar
   
Dries committed
153

Dries's avatar
   
Dries committed
154
    // Prepare the query:
Dries's avatar
   
Dries committed
155
156
157
158
159
160
161
    foreach ($node as $key => $value) {
      if (in_array($key, $fields)) {
        $k[] = check_query($key);
        $v[] = "'". check_query($value) ."'";
      }
    }

Dries's avatar
   
Dries committed
162
    // Insert the node into the database:
Dries's avatar
   
Dries committed
163
164
    db_query("INSERT INTO node (". implode(", ", $k) .") VALUES (". implode(", ", $v) .")");

Dries's avatar
   
Dries committed
165
    // Call the node specific callback (if any):
Dries's avatar
   
Dries committed
166
167
168
169
170
171
172
173
    module_invoke($node->type, "insert", $node);
  }
  else {

    /*
    ** Update an existing node:
    */

Dries's avatar
   
Dries committed
174
    // Set some required fields:
Dries's avatar
   
Dries committed
175
176
    $node->changed = time();

Dries's avatar
   
Dries committed
177
    // Prepare the query:
Dries's avatar
   
Dries committed
178
179
180
181
182
183
    foreach ($node as $key => $value) {
      if (in_array($key, $fields)) {
        $q[] = check_query($key) ." = '". check_query($value) ."'";
      }
    }

Dries's avatar
   
Dries committed
184
    // Update the node in the database:
Dries's avatar
   
Dries committed
185
186
    db_query("UPDATE node SET ". implode(", ", $q) ." WHERE nid = '$node->nid'");

Dries's avatar
   
Dries committed
187
    // Call the node specific callback (if any):
Dries's avatar
   
Dries committed
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
    module_invoke($node->type, "update", $node);

  }

  /*
  ** Return the node ID:
  */

  return $node->nid;

}

function node_view($node, $main = 0) {
  global $theme;

Dries's avatar
   
Dries committed
203
  $node = array2object($node);
Dries's avatar
   
Dries committed
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222

  /*
  ** 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:
    */

    $theme->node($node, $main);
  }
}

Dries's avatar
   
Dries committed
223
224
function node_access($op, $node = 0) {

Dries's avatar
   
Dries committed
225
226
  if (user_access("administer nodes")) {
    return 1;
Dries's avatar
   
Dries committed
227
  }
Dries's avatar
   
Dries committed
228
  else {
Dries's avatar
   
Dries committed
229

Dries's avatar
   
Dries committed
230
231
232
    /*
    ** Convert the node to an object if necessary:
    */
Dries's avatar
   
Dries committed
233

Dries's avatar
   
Dries committed
234
    $node = array2object($node);
Dries's avatar
   
Dries committed
235

Dries's avatar
   
Dries committed
236
237
238
239
    /*
    ** Construct a function:
    */

Dries's avatar
   
Dries committed
240
241
242
243
244
245
246
247
    if ($node->type) {
      $type = $node->type;
    }
    else {
      $type = $node;
    }

    $function = $type ."_access";
Dries's avatar
   
Dries committed
248
249
250
251
252
253
254

    if (function_exists($function)) {
      return $function($op, $node);
    }
    else {
      return 0;
    }
Dries's avatar
   
Dries committed
255
256
257
  }
}

Dries's avatar
   
Dries committed
258
function node_perm() {
Dries's avatar
   
Dries committed
259
  return array("administer nodes", "access content", "post content");
Dries's avatar
   
Dries committed
260
261
}

Dries's avatar
   
Dries committed
262
function node_search($keys) {
Dries's avatar
   
Dries committed
263
  global $PHP_SELF;
Dries's avatar
   
Dries committed
264

Kjartan's avatar
Kjartan committed
265
266
267
268
269
270
271
272
273
274
275
276
  // 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
277
  // table to the data that the search_index table has in it, and the the
Kjartan's avatar
Kjartan committed
278
279
  // do_search functino will rank it.
  //
Dries's avatar
   
Dries committed
280
  // The select must always provide the following fields - lno, title,
Kjartan's avatar
Kjartan committed
281
282
283
284
285
  // created, uid, name, count
  //
  $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
286

Dries's avatar
   
Dries committed
287
288
289
  return $find;
}

Dries's avatar
   
Dries committed
290
function node_conf_options() {
Dries's avatar
   
Dries committed
291
  $output .= form_select(t("Default number of nodes to display"), "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 nodes to display on the main page."));
Dries's avatar
   
Dries committed
292
293
294
  return $output;
}

Dries's avatar
CHANGES    
Dries committed
295
function node_conf_filters() {
Dries's avatar
   
Dries committed
296
  $output .= form_select(t("Enable HTML tags"), "filter_html", variable_get("filter_html", 0), array("Disabled", "Enabled"), t("Allow HTML and PHP tags in user-contributed content."));
297
  $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
298
  $output .= "<hr />";
Dries's avatar
   
Dries committed
299
  $output .= form_select(t("Enable link tags"), "filter_link", variable_get("filter_link", 0), array("Disabled", "Enabled"), t("Substitute special [[nodesubject|text]] tags. Your browser will display 'text', and when you click on it your browser will open the node with the subject 'nodesubject'. Please be aware that you'll need to copy the subject of the target node exactly in order to use this feature."));
Dries's avatar
   
Dries committed
300
  $output .= "<hr />";
Dries's avatar
CHANGES    
Dries committed
301
302
303
304
305
306
307
308
309
310
311
  return $output;
}

function node_filter_html($text) {
  $text = eregi_replace("([ \f\r\t\n\'\"])style=[^>]+", "\\1", $text);
  $text = eregi_replace("([ \f\r\t\n\'\"])on[a-z]+=[^>]+", "\\1", $text);
  $text = strip_tags($text, variable_get("allowed_html", ""));
  return $text;
}

function node_filter_link($text) {
Dries's avatar
   
Dries committed
312
313
314
315
316
  $src = array("/\[\[(([^\|]*?)(\|([^\|]*?))?)\]\]/e");  // [link|description]
  $dst = array(format_tag('\\2', '\\4'));                // [link|description]
  return preg_replace($src, $dst, $text);
}

Dries's avatar
   
Dries committed
317
function node_filter_line($text) {
Dries's avatar
   
Dries committed
318

Dries's avatar
   
Dries committed
319
  /*
Dries's avatar
   
Dries committed
320
321
322
323
324
325
326
  ** This "line break filter" will try to get the line breaks right
  ** regardless of the user's input.  Its goal aspires a consistent
  ** mark-up and use of line breaks and paragraphs.
  */

  /*
  ** If HTML mark-up is being used, strip regular line breaks:
Dries's avatar
   
Dries committed
327
328
329
  */

  if (strstr($text, "<br />") || strstr($text, "<p>")) {
Dries's avatar
   
Dries committed
330
    $text = ereg_replace("[\r\n]", "", $text);
Dries's avatar
   
Dries committed
331
332
333
334
335
336
  }

  /*
  ** Replace '<br>', '<br />', '<p>' and '<p />' by '\n':
  */

Kjartan's avatar
Kjartan committed
337
  $text = eregi_replace("<br />", "\n", $text);
Dries's avatar
   
Dries committed
338
339
  $text = eregi_replace("<br />", "\n", $text);
  $text = eregi_replace("<p>", "\n", $text);
Dries's avatar
   
Dries committed
340
  $text = eregi_replace("<p />", "\n", $text);
Dries's avatar
   
Dries committed
341
342

  /*
Dries's avatar
   
Dries committed
343
  ** Replace '\r\n' by '\n':
Dries's avatar
   
Dries committed
344
345
346
347
348
349
350
351
352
353
354
  */

  $text = ereg_replace("\r\n", "\n", $text);

  /*
  ** Replace some new line charachters:
  */

  while (strpos($text, "\n\n\n")) {
    $text = ereg_replace("\n\n\n", "\n\n", $text);
  }
Dries's avatar
   
Dries committed
355

Dries's avatar
   
Dries committed
356
357
358
359
360
361
362
  /*
  ** Replace some common "artifacts":
  */

  $list = "blockquote|li|ol|ul|table|th|td|tr|pre";
  $text = preg_replace(array("/\n\s*<([\/])($list)/", "/($list)>\s*\n/"), array("<$1$2", "$1>"), $text);

Dries's avatar
   
Dries committed
363
364
365
  return trim($text);
}

Dries's avatar
CHANGES    
Dries committed
366
367
368
function node_filter($text) {
  if (variable_get("filter_html", 0)) $text = node_filter_html($text);
  if (variable_get("filter_link", 0)) $text = node_filter_link($text);
Dries's avatar
   
Dries committed
369
  return node_filter_line($text);
Dries's avatar
CHANGES    
Dries committed
370
371
}

372
function node_link($type, $node = 0, $main = 0) {
Dries's avatar
   
Dries committed
373

Dries's avatar
   
Dries committed
374
  if ($type == "admin" && user_access("administer nodes")) {
Dries's avatar
   
Dries committed
375
376
377
    $links[] = "<a href=\"admin.php?mod=node\">content management</a>";
  }

Dries's avatar
   
Dries committed
378
  if ($type == "page" && user_access("post content")) {
Dries's avatar
   
Dries committed
379
    $links[] = "<a href=\"module.php?mod=node&op=add\" title=\"". t("Submit or suggest new content.") ."\">". t("submit") ."</a>";
Dries's avatar
   
Dries committed
380
381
  }

Dries's avatar
   
Dries committed
382
  if ($type == "node") {
Kjartan's avatar
Kjartan committed
383
384
385
    if ($node->links) {
      $links = $node->links;
    }
Dries's avatar
   
Dries committed
386

Dries's avatar
   
Dries committed
387
    if ($main == 1 && $node->teaser != $node->body) {
Dries's avatar
   
Dries committed
388
      $links[] = "<a href=\"node.php?id=$node->nid\" title=\"". t("Read the rest of this posting.") ."\">". t("read more") ."</a>";
Dries's avatar
   
Dries committed
389
    }
Dries's avatar
   
Dries committed
390
391

    if (user_access("administer nodes")) {
Dries's avatar
   
Dries committed
392
       $links[] = "<a href=\"admin.php?mod=node&op=edit&id=$node->nid\" title=\"". t("Administer this node.") ."\">". t("administer") ."</a>";
Dries's avatar
   
Dries committed
393
    }
Dries's avatar
   
Dries committed
394
395
396
397
398
  }

  return $links ? $links : array();
}

Dries's avatar
   
Dries committed
399
function node_admin_settings($edit = array()) {
Dries's avatar
   
Dries committed
400
401
  global $op;

Dries's avatar
   
Dries committed
402
403
404
405
  if ($op == t("Save configuration")) {
    /*
    ** Save the configuration options:
    */
Dries's avatar
Dries committed
406

Dries's avatar
   
Dries committed
407
408
409
    foreach ($edit as $name => $value) {
      variable_set($name, $value);
    }
Dries's avatar
 
Dries committed
410
411
  }

Dries's avatar
   
Dries committed
412
413
414
415
  if ($op == t("Reset to defaults")) {
    /*
    ** Reset the configuration options to their default value:
    */
Dries's avatar
 
Dries committed
416

Dries's avatar
   
Dries committed
417
418
419
    foreach ($edit as $name=>$value) {
      variable_del($name);
    }
Dries's avatar
   
Dries committed
420
  }
Dries's avatar
Dries committed
421

Dries's avatar
   
Dries committed
422
  $output .= "<h3>". t("Global node settings") ."</h3>";
Dries's avatar
   
Dries committed
423
  $output .= node_conf_options();
Dries's avatar
   
Dries committed
424
425
426

  foreach (module_list() as $name) {
    if (module_hook($name, "conf_options") && module_hook($name, "node")) {
Dries's avatar
   
Dries committed
427
      $output .= "<h3>". ucfirst(module_invoke($name, "node", "name") ." settings") ."</h3>";
Dries's avatar
   
Dries committed
428
429
430
431
      $output .= module_invoke($name, "conf_options");
    }
  }

Dries's avatar
   
Dries committed
432
433
  $output .= form_submit(t("Save configuration"));
  $output .= form_submit(t("Reset to defaults"));
Dries's avatar
Dries committed
434

Dries's avatar
   
Dries committed
435
  return form($output);
Dries's avatar
   
Dries committed
436
437
}

Dries's avatar
   
Dries committed
438
function node_admin_edit($node) {
Dries's avatar
   
Dries committed
439

Dries's avatar
   
Dries committed
440
  if (is_numeric($node)) {
Dries's avatar
   
Dries committed
441
    $node = node_load(array("nid" => $node));
Dries's avatar
   
Dries committed
442
  }
Dries's avatar
   
Dries committed
443

Dries's avatar
   
Dries committed
444
445
446
  /*
  ** Edit node:
  */
Dries's avatar
   
Dries committed
447

Dries's avatar
   
Dries committed
448
  $output .= "<h3>". t("Edit") ." ". module_invoke($node->type, "node", "name") ."</h3>";
Dries's avatar
   
Dries committed
449

Dries's avatar
   
Dries committed
450
  $output .= node_form($node);
Dries's avatar
   
Dries committed
451

Dries's avatar
   
Dries committed
452
453
454
455
456
457
458
459
460
  /*
  ** Edit revisions:
  */

  if ($node->revisions) {
    $output .= "<h3>". t("Edit revisions") ."</h3>";
    $output .= "<table border=\"1\" cellpadding=\"2\" cellspacing=\"2\">";
    $output .= " <tr><th>older revisions</th><th colspan=\"3\">operations</th></tr>";
    foreach ($node->revisions as $key => $revision) {
461
      $output .= " <tr><td>". strtr(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>". $revision["history"] ."</small>" : "") ."</td><td><a href=\"node.php?id=$node->nid&revision=$key\">". t("view revision") ."</a></td><td><a href=\"admin.php?mod=node&op=rollback+revision&id=$node->nid&revision=$key\">". t("rollback revision") ."</a></td><td><a href=\"admin.php?mod=node&op=delete+revision&id=$node->nid&revision=$key\">". t("delete revision") ."</a></td></tr>";
Dries's avatar
   
Dries committed
462
463
464
465
    }
    $output .= "</table>";
  }

Dries's avatar
   
Dries committed
466
  /*
Dries's avatar
   
Dries committed
467
  ** Display the node form extensions:
Dries's avatar
   
Dries committed
468
  */
Dries's avatar
   
Dries committed
469

Dries's avatar
   
Dries committed
470
471
  foreach (module_list() as $name) {
    $output .= module_invoke($name, "node_link", $node);
Dries's avatar
Dries committed
472
473
  }

Dries's avatar
   
Dries committed
474
  return $output;
Dries's avatar
   
Dries committed
475
476
477

}

Dries's avatar
   
Dries committed
478
479
function node_admin_nodes() {
  global $query;
Dries's avatar
   
Dries committed
480

Dries's avatar
   
Dries committed
481
  $queries = array(array("ORDER BY n.created DESC", "new nodes"), array("ORDER BY n.changed DESC", "updated nodes"), array("WHERE n.status = 1 AND n.moderate = 0 ORDER BY n.nid DESC", "published nodes"), array("WHERE n.status = 0 AND n.moderate = 0 ORDER BY n.nid DESC", "non-published nodes"), array("WHERE n.status = 1 AND n.moderate = 1 ORDER BY n.nid DESC", "pending nodes"), array("WHERE n.status = 1 AND n.promote = 1 ORDER BY n.nid DESC", "promoted nodes"));
Dries's avatar
   
Dries committed
482

Dries's avatar
   
Dries committed
483
  $result = db_query("SELECT n.*, u.name, u.uid FROM node n LEFT JOIN users u ON n.uid = u.uid ". $queries[$query ? $query : 1][0] ." LIMIT 50");
Dries's avatar
   
Dries committed
484

Dries's avatar
   
Dries committed
485
486
  foreach ($queries as $key => $value) {
    $links[] = "<a href=\"admin.php?mod=node&op=nodes&query=$key\">$value[1]</a>";
Dries's avatar
Dries committed
487
488
  }

Dries's avatar
   
Dries committed
489
  $output .= "<small>". implode(" :: ", $links) ."</small><hr />";
Dries's avatar
   
Dries committed
490

Dries's avatar
   
Dries committed
491
492
493
  $output .= "<table border=\"1\" cellpadding=\"2\" cellspacing=\"2\">\n";
  $output .= " <tr><th>title</th><th>type</th><th>author</th><th>status</th><th colspan=\"2\">operations</th></tr>\n";
  while ($node = db_fetch_object($result)) {
Dries's avatar
   
Dries committed
494
    $output .= "<tr><td><a href=\"node.php?id=$node->nid\">". check_output($node->title) ."</a></td><td>$node->type</td><td nowrap=\"nowrap\">". format_name($node) ."</td><td>". ($node->status ? t("published") : t("not published")) ."</td><td nowrap=\"nowrap\"><a href=\"admin.php?mod=node&op=edit&id=$node->nid\">". t("edit node") ."</a></td><td nowrap=\"nowrap\"><a href=\"admin.php?mod=node&op=delete&id=$node->nid\">". t("delete node") ."</a></td></tr>";
Dries's avatar
   
Dries committed
495
  }
Dries's avatar
   
Dries committed
496
  $output .= "</table>";
Dries's avatar
   
Dries committed
497

Dries's avatar
   
Dries committed
498
  return $output;
Dries's avatar
Dries committed
499
500
}

Dries's avatar
   
Dries committed
501
502
503
504
505
506
507
508
509
510
511
512
/*
** 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
513
514
515
function node_revision_create($node) {
  global $user;

Dries's avatar
   
Dries committed
516
517
518
519
520
  /*
  ** '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
521
  if ($node->nid && $node->revision) {
Dries's avatar
   
Dries committed
522
523
524
525
    $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
526
527
528
529
530
  }

  return $node;
}

Dries's avatar
   
Dries committed
531
532
533
/*
** Roll-back to the revision with the specified revision number.
*/
Dries's avatar
   
Dries committed
534

Dries's avatar
   
Dries committed
535
536
function node_revision_rollback($node, $revision) {
  global $user;
Dries's avatar
   
Dries committed
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571

  /*
  ** 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
572
  watchdog("special", "$node->type: rollbacked to revision #$revision of '$node->title'");
Dries's avatar
   
Dries committed
573
574
}

Dries's avatar
   
Dries committed
575
576
577
578
579
/*
** Delete the revision with specified revision number.
*/

function node_revision_delete($node, $revision) {
Dries's avatar
   
Dries committed
580
581

  unset($node->revisions[$revision]);
Dries's avatar
   
Dries committed
582

Dries's avatar
   
Dries committed
583
  node_save($node, array("nid", "revisions"));
Dries's avatar
   
Dries committed
584

Dries's avatar
   
Dries committed
585
  watchdog("special", "$node->type: removed revision #$revision of '$node->title'");
Dries's avatar
   
Dries committed
586
587
}

Dries's avatar
   
Dries committed
588
589
590
591
592
593
594
595
596
597
598
/*
** 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
599
600
}

Dries's avatar
 
Dries committed
601
function node_admin() {
Dries's avatar
   
Dries committed
602
  global $op, $id, $revision, $edit;
Dries's avatar
   
Dries committed
603

Dries's avatar
   
Dries committed
604
  if (user_access("administer nodes")) {
Dries's avatar
   
Dries committed
605

Dries's avatar
   
Dries committed
606
607
608
    /*
    ** Compile a list of the administrative links:
    */
Dries's avatar
Dries committed
609

Dries's avatar
   
Dries committed
610
611
612
613
    $links[] = "<a href=\"admin.php?mod=node&op=nodes\">nodes</a>";
    $links[] = "<a href=\"admin.php?mod=node&op=search\">search content</a>";
    $links[] = "<a href=\"admin.php?mod=node&op=settings\">settings</a>";
    $links[] = "<a href=\"admin.php?mod=node&op=help\">help</a>";
Dries's avatar
   
Dries committed
614

Dries's avatar
   
Dries committed
615
    print "<small>". implode(" &middot; ", $links) ."</small><hr />";
Dries's avatar
   
Dries committed
616
617
618
619
620
621

    switch ($op) {
      case "help":
        print node_help();
        break;
      case "search":
Dries's avatar
   
Dries committed
622
        print search_type("node", "admin.php?mod=node&op=search");
Dries's avatar
   
Dries committed
623
        break;
Dries's avatar
   
Dries committed
624
625
626
627
      case t("Save configuration"):
      case t("Reset to defaults"):
      case "settings":
        print node_admin_settings($edit);
Dries's avatar
   
Dries committed
628
629
        break;
      case "edit":
Dries's avatar
   
Dries committed
630
        print node_admin_edit($id);
Dries's avatar
   
Dries committed
631
        break;
Dries's avatar
   
Dries committed
632
633
634
      case "delete":
        print node_delete(array("nid" => $id));
        break;
Dries's avatar
   
Dries committed
635
      case "rollback revision":
Dries's avatar
   
Dries committed
636
637
        print node_revision_rollback(node_load(array("nid" => $id)), $revision);
        print node_admin_edit($id);
Dries's avatar
   
Dries committed
638
639
        break;
      case "delete revision":
Dries's avatar
   
Dries committed
640
641
        print node_revision_delete(node_load(array("nid" => $id)), $revision);
        print node_admin_edit($id);
Dries's avatar
   
Dries committed
642
        break;
Dries's avatar
   
Dries committed
643
      case t("Preview"):
Dries's avatar
   
Dries committed
644
        print node_preview($edit);
Dries's avatar
   
Dries committed
645
        break;
Dries's avatar
   
Dries committed
646
      case t("Submit"):
Dries's avatar
   
Dries committed
647
648
649
        print node_submit($edit);
        break;
      case t("Delete"):
Dries's avatar
   
Dries committed
650
        print node_delete($edit);
Dries's avatar
   
Dries committed
651
        break;
Dries's avatar
   
Dries committed
652
      default:
Dries's avatar
   
Dries committed
653
        print node_admin_nodes();
Dries's avatar
   
Dries committed
654
655
656
657
    }
  }
  else {
    print message_access();
Dries's avatar
 
Dries committed
658
659
660
  }
}

Dries's avatar
   
Dries committed
661
662
663
664
function node_block() {
  global $theme;

  $block[0][subject] = t("Syndicate");
Dries's avatar
   
Dries committed
665
  $block[0][content] = "<div align=\"center\"><a href=\"module.php?mod=node&op=feed\" title=\"". t("Read the XML version of this page.")."\"><img src=\"". $theme->image("xml.gif") ."\" width=\"36\" height=\"14\" border=\"0\" alt=\"XML\" /></a></div>\n";
Dries's avatar
   
Dries committed
666
667
668
669
670
671
  $block[0][info] = "Syndicate";

  return $block;
}

function node_feed() {
Dries's avatar
   
Dries committed
672

Dries's avatar
   
Dries committed
673
  $result = db_query("SELECT nid, type FROM node WHERE promote = '1' AND status = '1' ORDER BY created DESC LIMIT 15");
Dries's avatar
   
Dries committed
674
675

  while ($node = db_fetch_object($result)) {
Dries's avatar
   
Dries committed
676
    $item = node_load(array("nid" => $node->nid, "type" => $node->type));
Dries's avatar
   
Dries committed
677
678
679

    $link = path_uri() ."node.php?id=$item->nid";

Dries's avatar
   
Dries committed
680
    $items .= format_rss_item($item->title, $link, $item->teaser);
Dries's avatar
   
Dries committed
681
682
683
  }

  $output .= "<?xml version=\"1.0\" encoding=\"ISO-8859-1\" ?>\n";
Dries's avatar
   
Dries committed
684
  // $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
685
  $output .= "<rss version=\"0.91\">\n";
Dries's avatar
   
Dries committed
686
  $output .= format_rss_channel(variable_get("site_name", "drupal") ." - ". variable_get("site_slogan", ""), path_uri(), variable_get("site_mission", ""), $items);
Dries's avatar
   
Dries committed
687
688
  $output .= "</rss>\n";

Dries's avatar
   
Dries committed
689
690
  header("Content-Type: text/xml");

Dries's avatar
   
Dries committed
691
692
693
694
  print $output;

}

Dries's avatar
   
Dries committed
695

696
function node_validate($node, &$error) {
Dries's avatar
   
Dries committed
697
698
699
700
701
702
703

  global $user;

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

Dries's avatar
   
Dries committed
704
  $node = array2object($node);
Dries's avatar
   
Dries committed
705
706
707
708
709

  /*
  ** Validate the title field:
  */

Dries's avatar
   
Dries committed
710
  if (isset($node->title) && !$node->title) {
Dries's avatar
   
Dries committed
711
712
713
714
715
716
717
718
719
    $error["title"] = "<div style=\"color: red;\">". t("You have to specify a valid title.") ."</div>";
  }

  if (user_access("administer nodes")) {

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

Dries's avatar
   
Dries committed
720
721
    if (!$node->created) {
      $node->created = time();
Dries's avatar
   
Dries committed
722
723
    }

Dries's avatar
   
Dries committed
724
725
    if (!$node->date) {
      $node->date = date("M j, Y g:i a", $node->created);
Dries's avatar
   
Dries committed
726
727
728
729
730
731
    }

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

Dries's avatar
   
Dries committed
732
733
734
735
736
737
738
739
740
    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
741
      $node->uid = $account->uid;
Dries's avatar
   
Dries committed
742
743
    }
    else {
744
      $error["name"] = "<div style=\"color: red;\">". strtr(t("The name '%u' does not exist."), array ("%u" => $node->name)) ."</div>";
Dries's avatar
   
Dries committed
745
746
747
748
749
750
    }

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

Dries's avatar
   
Dries committed
751
752
    if (strtotime($node->date) > 1000) {
      $node->created = strtotime($node->date);
Dries's avatar
   
Dries committed
753
754
755
756
    }
    else {
      $error["date"] = "<div style=\"color: red;\">". t("You have to specifiy a valid date.") ."</div>";
    }
Dries's avatar
   
Dries committed
757

Dries's avatar
   
Dries committed
758
759
  }

Dries's avatar
   
Dries committed
760
  return $node;
Dries's avatar
   
Dries committed
761
762
}

Dries's avatar
   
Dries committed
763

Dries's avatar
   
Dries committed
764
765
function node_form($edit) {

Dries's avatar
   
Dries committed
766
767
768
769
770
771
772
  /*
  ** Save the referer.  We record where the user came from such that we
  ** can redirect him after having completed the node forms.
  */

  referer_save();

Dries's avatar
   
Dries committed
773
774
775
776
  /*
  ** Validate the node:
  */

777
  $edit = node_validate($edit, $error);
Dries's avatar
   
Dries committed
778

Dries's avatar
   
Dries committed
779
780
781
782
783
784
785
786
  /*
  ** Generate a teaser when necessary:
  */

  if ($edit->body && !$edit->teaser) {
    $edit->teaser = node_teaser($edit->body);
  }

Dries's avatar
   
Dries committed
787
788
789
790
791
792
  /*
  ** Get the node specific bits:
  */

  $function = $edit->type ."_form";
  if (function_exists($function)) {
Kjartan's avatar
Kjartan committed
793
    $form .= $function($edit, $help, $error, $param);
Dries's avatar
   
Dries committed
794
795
796
797
798
799
800
801
802
803
  }

  /*
  ** Add the help text:
  */

  if ($help) {
    $output .= "<p>$help</p>";
  }

Dries's avatar
   
Dries committed
804
805
806
807
  $output .= "<table border=\"0\" cellpadding=\"2\" cellspacing=\"2\">";
  $output .= " <tr>";
  $output .= "  <td valign=\"top\">";

Dries's avatar
   
Dries committed
808
809
810
811
812
813
814
  /*
  ** Add the default fields:
  */

  $output .= form_textfield(t("Title"), "title", $edit->title, 60, 64, $error["title"]);

  /*
Dries's avatar
   
Dries committed
815
  ** Add the node specific fields:
Dries's avatar
   
Dries committed
816
817
  */

Dries's avatar
   
Dries committed
818
  $output .= $form;
Dries's avatar
   
Dries committed
819
820
821
822
823
824
825
826
827

  /*
  ** Add the hidden fields:
  */

  if ($edit->nid) {
    $output .= form_hidden("nid", $edit->nid);
  }

Dries's avatar
   
Dries committed
828
829
830
831
832
  if (isset($edit->uid)) {
      /*
      ** The use of isset() is mandatory in the context of user IDs as uid
      ** 0 denotes the anonymous user.
      */
Dries's avatar
   
Dries committed
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
    $output .= form_hidden("uid", $edit->uid);
  }

  if ($edit->created) {
    $output .= form_hidden("created", $edit->created);
  }

  $output .= form_hidden("type", $edit->type);

  /*
  ** Add the buttons:
  */

  $output .= form_submit(t("Preview"));

  if ($edit->title && $edit->type && !$error) {
    $output .= form_submit(t("Submit"));
  }

Dries's avatar
   
Dries committed
852
  if ($edit->nid && node_access("delete", $edit)) {
Dries's avatar
   
Dries committed
853
854
855
856
857
858
859
860
    $output .= form_submit(t("Delete"));
  }

  /*
  ** Add the admin specific parts:
  */

  if (user_access("administer nodes")) {
Dries's avatar
   
Dries committed
861
    $output .= "</td><td align=\"left\" valign=\"top\">";
Dries's avatar
   
Dries committed
862

Dries's avatar
   
Dries committed
863
864
865
    $output .= form_textfield(t("Authored by"), "name", $edit->name, 20, 25, $error["name"]);
    $output .= form_textfield(t("Authored on"), "date", $edit->date, 20, 25, $error["date"]);
    $output .= "<br />";
Dries's avatar
   
Dries committed
866
    $output .= form_select(t("Set public/published"), "status", $edit->status, array("Disabled", "Enabled"));
Dries's avatar
   
Dries committed
867
    $output .= form_select(t("Queue for moderation"), "moderate", $edit->moderate, array("Disabled", "Enabled"));
Dries's avatar
   
Dries committed
868
    $output .= form_select(t("Promote to front page"), "promote", $edit->promote, array("Disabled", "Enabled"));
869
    $output .= form_select(t("Static on front page"), "static", $edit->static, array("Disabled", "Enabled"));
Dries's avatar
   
Dries committed
870
    $output .= form_select(t("Allow users comments"), "comment", $edit->comment, array("Disabled", "Enabled"));
Dries's avatar
   
Dries committed
871
    $output .= form_select(t("Create new revision"), "revision", $edit->revision, array("Disabled", "Enabled"));
Dries's avatar
   
Dries committed
872
873
  }

Dries's avatar
   
Dries committed
874
875
876
877
  $output .= "  </td>";
  $output .= " </tr>";
  $output .= "</table>";

Kjartan's avatar
Kjartan committed
878
  return form($output, ($param["method"] ? $param["method"] : "post"), $param["action"], $param["options"]);
Dries's avatar
   
Dries committed
879
880
881
882
883
}

function node_add($type) {
  global $user;

Dries's avatar
   
Dries committed
884
  /*
Dries's avatar
   
Dries committed
885
  ** If a node type has been specified, validate it existence.  If no
Dries's avatar
   
Dries committed
886
887
888
  ** (valid) node type has been provied, display a node type overview.
  */

Dries's avatar
   
Dries committed
889
  if ($type && node_access("create", $type)) {
Dries's avatar
   
Dries committed
890
    $output = node_form(array("uid" => $user->uid, "name" => $user->name, "type" => $type));
Dries's avatar
   
Dries committed
891
892
  }
  else {
Dries's avatar
   
Dries committed
893

Dries's avatar
   
Dries committed
894
895
896
    /*
    ** Compile a list with the different node types and their explanation:
    */
Dries's avatar
   
Dries committed
897

Dries's avatar
   
Dries committed
898
    foreach (module_list() as $name) {
Dries's avatar
   
Dries committed
899
900
      if (module_hook($name, "node") && node_access("create", array("type" => $name))) {
        $output .= "<li>";
901
        $output .= " <a href=\"module.php?mod=node&op=add&type=$name\" title=\"". strtr(t("Add a new %s."), module_invoke($name, "node", "name")) ."\">". module_invoke($name, "node", "name") ."</a>";
Dries's avatar
   
Dries committed
902
903
        $output .= " <div style=\"margin-left: 20px;\">". module_invoke($name, "node", "description") ."</div>";
        $output .= "</li>";
Dries's avatar
   
Dries committed
904
      }
Dries's avatar
   
Dries committed
905
906
    }

Dries's avatar
   
Dries committed
907
908
    $output = t("Choose the appropriate item from the list:") ."<ul>$output</ul>";

Dries's avatar
   
Dries committed
909
910
911
912
913
914
915
916
917
918
  }

  return $output;
}

function node_edit($id) {
  global $user;

  $node = node_load(array("nid" => $id));

Dries's avatar
   
Dries committed
919
920
921
922
923
924
925
926
  if (node_access("update", $node)) {
    $output = node_form($node);
  }
  else {
    $output = message_access();
  }

  return $output;
Dries's avatar
   
Dries committed
927
928
}

Dries's avatar
   
Dries committed
929
930
931
932
933
934
function node_preview($node) {

  /*
  ** Convert the array to an object:
  */

Dries's avatar
   
Dries committed
935
  $node = array2object($node);
Dries's avatar
   
Dries committed
936
937
938
939
940

  /*
  ** Load the user's name when needed:
  */

Dries's avatar
   
Dries committed
941
942
943
944
945
946
947
948
  if (isset($node->name)) {
    /*
    ** The use of isset() is mandatory in the context of user IDs as uid
    ** 0 denotes the anonymous user.
    */

    if ($user = user_load(array("name" => $node->name))) {
      $node->uid = $user->uid;
Dries's avatar
   
Dries committed
949
950
    }
    else {
Dries's avatar
   
Dries committed
951
      $node->uid = 0; // anonymous user
Dries's avatar
   
Dries committed
952
    }
Dries's avatar
   
Dries committed
953
  }
Dries's avatar
   
Dries committed
954
  else if ($node->uid) {
Dries's avatar
   
Dries committed
955
956
    $user = user_load(array("uid" => $node->uid));
    $node->name = $user->name;
Dries's avatar
   
Dries committed
957
958
959
960
961
962
  }

  /*
  ** Set the created time when needed:
  */

Dries's avatar
   
Dries committed
963
964
  if (empty($node->nid)) {
    $node->created = time();
Dries's avatar
   
Dries committed
965
966
  }

Dries's avatar
   
Dries committed
967
968
969
970
  /*
  ** Apply the required filters:
  */

Dries's avatar
   
Dries committed
971
  if ($node->nid) {
Dries's avatar
   
Dries committed
972
    $view = array_merge($node, module_invoke($node->type, "save", "update", $node));
Dries's avatar
   
Dries committed
973
974
  }
  else {
Dries's avatar
   
Dries committed
975
    $view = array_merge($node, module_invoke($node->type, "save", "create", $node));
Dries's avatar
   
Dries committed
976
977
  }

Dries's avatar
   
Dries committed
978
979
980
981
  /*
  ** Display a preview of the node:
  */

Dries's avatar
   
Dries committed
982
  node_view($view);
Dries's avatar
   
Dries committed
983

Dries's avatar
   
Dries committed
984
  return node_form($node);
Dries's avatar
   
Dries committed
985
986
}

Dries's avatar
   
Dries committed
987
function node_submit($node) {
Dries's avatar
   
Dries committed
988
  global $theme, $user;
Dries's avatar
   
Dries committed
989

Dries's avatar
   
Dries committed
990
  if (user_access("post content")) {
Dries's avatar
   
Dries committed
991

Dries's avatar
   
Dries committed
992
993
994
    /*
    ** Fixup the node when required:
    */
Dries's avatar
   
Dries committed
995

996
    $node = node_validate($node, $error);
Dries's avatar
   
Dries committed
997

Dries's avatar
   
Dries committed
998
    /*
Dries's avatar
   
Dries committed
999
    ** Create a new revision when required:
Dries's avatar
   
Dries committed
1000
    */