Repository navigation
Expand file tree
/
Copy pathchangelog.php
More file actions
546 lines (488 loc) · 18.1 KB
/
Copy pathchangelog.php
File metadata and controls
546 lines (488 loc) · 18.1 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
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
51
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
105
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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
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
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
<?php
/**
* Changelog handling functions
*
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Andreas Gohr <andi@splitbrain.org>
*/
// Constants for known core changelog line types.
// Use these in place of string literals for more readable code.
define('DOKU_CHANGE_TYPE_CREATE', 'C');
define('DOKU_CHANGE_TYPE_EDIT', 'E');
define('DOKU_CHANGE_TYPE_MINOR_EDIT', 'e');
define('DOKU_CHANGE_TYPE_DELETE', 'D');
define('DOKU_CHANGE_TYPE_REVERT', 'R');
/**
* parses a changelog line into it's components
*
* @author Ben Coburn <btcoburn@silicodon.net>
*/
function parseChangelogLine($line) {
$tmp = explode("\t", $line);
if ($tmp!==false && count($tmp)>1) {
$info = array();
$info['date'] = (int)$tmp[0]; // unix timestamp
$info['ip'] = $tmp[1]; // IPv4 address (127.0.0.1)
$info['type'] = $tmp[2]; // log line type
$info['id'] = $tmp[3]; // page id
$info['user'] = $tmp[4]; // user name
$info['sum'] = $tmp[5]; // edit summary (or action reason)
$info['extra'] = rtrim($tmp[6], "\n"); // extra data (varies by line type)
return $info;
} else { return false; }
}
/**
* Add's an entry to the changelog and saves the metadata for the page
*
* @param int $date Timestamp of the change
* @param String $id Name of the affected page
* @param String $type Type of the change see DOKU_CHANGE_TYPE_*
* @param String $summary Summary of the change
* @param mixed $extra In case of a revert the revision (timestmp) of the reverted page
* @param array $flags Additional flags in a key value array.
* Availible flags:
* - ExternalEdit - mark as an external edit.
*
* @author Andreas Gohr <andi@splitbrain.org>
* @author Esther Brunner <wikidesign@gmail.com>
* @author Ben Coburn <btcoburn@silicodon.net>
*/
function addLogEntry($date, $id, $type=DOKU_CHANGE_TYPE_EDIT, $summary='', $extra='', $flags=null){
global $conf, $INFO;
// check for special flags as keys
if (!is_array($flags)) { $flags = array(); }
$flagExternalEdit = isset($flags['ExternalEdit']);
$id = cleanid($id);
$file = wikiFN($id);
$created = @filectime($file);
$minor = ($type===DOKU_CHANGE_TYPE_MINOR_EDIT);
$wasRemoved = ($type===DOKU_CHANGE_TYPE_DELETE);
if(!$date) $date = time(); //use current time if none supplied
$remote = (!$flagExternalEdit)?clientIP(true):'127.0.0.1';
$user = (!$flagExternalEdit)?$_SERVER['REMOTE_USER']:'';
$strip = array("\t", "\n");
$logline = array(
'date' => $date,
'ip' => $remote,
'type' => str_replace($strip, '', $type),
'id' => $id,
'user' => $user,
'sum' => utf8_substr(str_replace($strip, '', $summary),0,255),
'extra' => str_replace($strip, '', $extra)
);
// update metadata
if (!$wasRemoved) {
$oldmeta = p_read_metadata($id);
$meta = array();
if (!$INFO['exists'] && empty($oldmeta['persistent']['date']['created'])){ // newly created
$meta['date']['created'] = $created;
if ($user){
$meta['creator'] = $INFO['userinfo']['name'];
$meta['user'] = $user;
}
} elseif (!$INFO['exists'] && !empty($oldmeta['persistent']['date']['created'])) { // re-created / restored
$meta['date']['created'] = $oldmeta['persistent']['date']['created'];
$meta['date']['modified'] = $created; // use the files ctime here
$meta['creator'] = $oldmeta['persistent']['creator'];
if ($user) $meta['contributor'][$user] = $INFO['userinfo']['name'];
} elseif (!$minor) { // non-minor modification
$meta['date']['modified'] = $date;
if ($user) $meta['contributor'][$user] = $INFO['userinfo']['name'];
}
$meta['last_change'] = $logline;
p_set_metadata($id, $meta);
}
// add changelog lines
$logline = implode("\t", $logline)."\n";
io_saveFile(metaFN($id,'.changes'),$logline,true); //page changelog
io_saveFile($conf['changelog'],$logline,true); //global changelog cache
}
/**
* Add's an entry to the media changelog
*
* @author Michael Hamann <michael@content-space.de>
* @author Andreas Gohr <andi@splitbrain.org>
* @author Esther Brunner <wikidesign@gmail.com>
* @author Ben Coburn <btcoburn@silicodon.net>
*/
function addMediaLogEntry($date, $id, $type=DOKU_CHANGE_TYPE_EDIT, $summary='', $extra='', $flags=null){
global $conf;
$id = cleanid($id);
if(!$date) $date = time(); //use current time if none supplied
$remote = clientIP(true);
$user = $_SERVER['REMOTE_USER'];
$strip = array("\t", "\n");
$logline = array(
'date' => $date,
'ip' => $remote,
'type' => str_replace($strip, '', $type),
'id' => $id,
'user' => $user,
'sum' => utf8_substr(str_replace($strip, '', $summary),0,255),
'extra' => str_replace($strip, '', $extra)
);
// add changelog lines
$logline = implode("\t", $logline)."\n";
io_saveFile($conf['media_changelog'],$logline,true); //global media changelog cache
io_saveFile(mediaMetaFN($id,'.changes'),$logline,true); //media file's changelog
}
/**
* returns an array of recently changed files using the
* changelog
*
* The following constants can be used to control which changes are
* included. Add them together as needed.
*
* RECENTS_SKIP_DELETED - don't include deleted pages
* RECENTS_SKIP_MINORS - don't include minor changes
* RECENTS_SKIP_SUBSPACES - don't include subspaces
* RECENTS_MEDIA_CHANGES - return media changes instead of page changes
* RECENTS_MEDIA_PAGES_MIXED - return both media changes and page changes
*
* @param int $first number of first entry returned (for paginating
* @param int $num return $num entries
* @param string $ns restrict to given namespace
* @param int $flags see above
* @return array recently changed files
*
* @author Ben Coburn <btcoburn@silicodon.net>
* @author Kate Arzamastseva <pshns@ukr.net>
*/
function getRecents($first,$num,$ns='',$flags=0){
global $conf;
$recent = array();
$count = 0;
if(!$num)
return $recent;
// read all recent changes. (kept short)
if ($flags & RECENTS_MEDIA_CHANGES) {
$lines = @file($conf['media_changelog']);
} else {
$lines = @file($conf['changelog']);
}
$lines_position = count($lines)-1;
$media_lines_position = 0;
$media_lines = array();
if ($flags & RECENTS_MEDIA_PAGES_MIXED) {
$media_lines = @file($conf['media_changelog']);
$media_lines_position = count($media_lines)-1;
}
$seen = array(); // caches seen lines, _handleRecent() skips them
// handle lines
while ($lines_position >= 0 || (($flags & RECENTS_MEDIA_PAGES_MIXED) && $media_lines_position >=0)) {
if (empty($rec) && $lines_position >= 0) {
$rec = _handleRecent(@$lines[$lines_position], $ns, $flags, $seen);
if (!$rec) {
$lines_position --;
continue;
}
}
if (($flags & RECENTS_MEDIA_PAGES_MIXED) && empty($media_rec) && $media_lines_position >= 0) {
$media_rec = _handleRecent(@$media_lines[$media_lines_position], $ns, $flags | RECENTS_MEDIA_CHANGES, $seen);
if (!$media_rec) {
$media_lines_position --;
continue;
}
}
if (($flags & RECENTS_MEDIA_PAGES_MIXED) && @$media_rec['date'] >= @$rec['date']) {
$media_lines_position--;
$x = $media_rec;
$x['media'] = true;
$media_rec = false;
} else {
$lines_position--;
$x = $rec;
if ($flags & RECENTS_MEDIA_CHANGES) $x['media'] = true;
$rec = false;
}
if(--$first >= 0) continue; // skip first entries
$recent[] = $x;
$count++;
// break when we have enough entries
if($count >= $num){ break; }
}
return $recent;
}
/**
* returns an array of files changed since a given time using the
* changelog
*
* The following constants can be used to control which changes are
* included. Add them together as needed.
*
* RECENTS_SKIP_DELETED - don't include deleted pages
* RECENTS_SKIP_MINORS - don't include minor changes
* RECENTS_SKIP_SUBSPACES - don't include subspaces
* RECENTS_MEDIA_CHANGES - return media changes instead of page changes
*
* @param int $from date of the oldest entry to return
* @param int $to date of the newest entry to return (for pagination, optional)
* @param string $ns restrict to given namespace (optional)
* @param int $flags see above (optional)
* @return array of files
*
* @author Michael Hamann <michael@content-space.de>
* @author Ben Coburn <btcoburn@silicodon.net>
*/
function getRecentsSince($from,$to=null,$ns='',$flags=0){
global $conf;
$recent = array();
if($to && $to < $from)
return $recent;
// read all recent changes. (kept short)
if ($flags & RECENTS_MEDIA_CHANGES) {
$lines = @file($conf['media_changelog']);
} else {
$lines = @file($conf['changelog']);
}
if(!$lines) return $recent;
// we start searching at the end of the list
$lines = array_reverse($lines);
// handle lines
$seen = array(); // caches seen lines, _handleRecent() skips them
foreach($lines as $line){
$rec = _handleRecent($line, $ns, $flags, $seen);
if($rec !== false) {
if ($rec['date'] >= $from) {
if (!$to || $rec['date'] <= $to) {
$recent[] = $rec;
}
} else {
break;
}
}
}
return array_reverse($recent);
}
/**
* Internal function used by getRecents
*
* don't call directly
*
* @see getRecents()
* @author Andreas Gohr <andi@splitbrain.org>
* @author Ben Coburn <btcoburn@silicodon.net>
*/
function _handleRecent($line,$ns,$flags,&$seen){
if(empty($line)) return false; //skip empty lines
// split the line into parts
$recent = parseChangelogLine($line);
if ($recent===false) { return false; }
// skip seen ones
if(isset($seen[$recent['id']])) return false;
// skip minors
if($recent['type']===DOKU_CHANGE_TYPE_MINOR_EDIT && ($flags & RECENTS_SKIP_MINORS)) return false;
// remember in seen to skip additional sights
$seen[$recent['id']] = 1;
// check if it's a hidden page
if(isHiddenPage($recent['id'])) return false;
// filter namespace
if (($ns) && (strpos($recent['id'],$ns.':') !== 0)) return false;
// exclude subnamespaces
if (($flags & RECENTS_SKIP_SUBSPACES) && (getNS($recent['id']) != $ns)) return false;
// check ACL
if ($flags & RECENTS_MEDIA_CHANGES) {
$recent['perms'] = auth_quickaclcheck(getNS($recent['id']).':*');
} else {
$recent['perms'] = auth_quickaclcheck($recent['id']);
}
if ($recent['perms'] < AUTH_READ) return false;
// check existance
if($flags & RECENTS_SKIP_DELETED){
$fn = (($flags & RECENTS_MEDIA_CHANGES) ? mediaFN($recent['id']) : wikiFN($recent['id']));
if(!@file_exists($fn)) return false;
}
return $recent;
}
/**
* Get the changelog information for a specific page id
* and revision (timestamp). Adjacent changelog lines
* are optimistically parsed and cached to speed up
* consecutive calls to getRevisionInfo. For large
* changelog files, only the chunk containing the
* requested changelog line is read.
*
* @author Ben Coburn <btcoburn@silicodon.net>
* @author Kate Arzamastseva <pshns@ukr.net>
*/
function getRevisionInfo($id, $rev, $chunk_size=8192, $media=false) {
global $cache_revinfo;
$cache =& $cache_revinfo;
if (!isset($cache[$id])) { $cache[$id] = array(); }
$rev = max($rev, 0);
// check if it's already in the memory cache
if (isset($cache[$id]) && isset($cache[$id][$rev])) {
return $cache[$id][$rev];
}
if ($media) {
$file = mediaMetaFN($id, '.changes');
} else {
$file = metaFN($id, '.changes');
}
if (!@file_exists($file)) { return false; }
if (filesize($file)<$chunk_size || $chunk_size==0) {
// read whole file
$lines = file($file);
if ($lines===false) { return false; }
} else {
// read by chunk
$fp = fopen($file, 'rb'); // "file pointer"
if ($fp===false) { return false; }
$head = 0;
fseek($fp, 0, SEEK_END);
$tail = ftell($fp);
$finger = 0;
$finger_rev = 0;
// find chunk
while ($tail-$head>$chunk_size) {
$finger = $head+floor(($tail-$head)/2.0);
fseek($fp, $finger);
fgets($fp); // slip the finger forward to a new line
$finger = ftell($fp);
$tmp = fgets($fp); // then read at that location
$tmp = parseChangelogLine($tmp);
$finger_rev = $tmp['date'];
if ($finger==$head || $finger==$tail) { break; }
if ($finger_rev>$rev) {
$tail = $finger;
} else {
$head = $finger;
}
}
if ($tail-$head<1) {
// cound not find chunk, assume requested rev is missing
fclose($fp);
return false;
}
// read chunk
$chunk = '';
$chunk_size = max($tail-$head, 0); // found chunk size
$got = 0;
fseek($fp, $head);
while ($got<$chunk_size && !feof($fp)) {
$tmp = @fread($fp, max($chunk_size-$got, 0));
if ($tmp===false) { break; } //error state
$got += strlen($tmp);
$chunk .= $tmp;
}
$lines = explode("\n", $chunk);
array_pop($lines); // remove trailing newline
fclose($fp);
}
// parse and cache changelog lines
foreach ($lines as $value) {
$tmp = parseChangelogLine($value);
if ($tmp!==false) {
$cache[$id][$tmp['date']] = $tmp;
}
}
if (!isset($cache[$id][$rev])) { return false; }
return $cache[$id][$rev];
}
/**
* Return a list of page revisions numbers
* Does not guarantee that the revision exists in the attic,
* only that a line with the date exists in the changelog.
* By default the current revision is skipped.
*
* id: the page of interest
* first: skip the first n changelog lines
* num: number of revisions to return
*
* The current revision is automatically skipped when the page exists.
* See $INFO['meta']['last_change'] for the current revision.
*
* For efficiency, the log lines are parsed and cached for later
* calls to getRevisionInfo. Large changelog files are read
* backwards in chunks until the requested number of changelog
* lines are recieved.
*
* @author Ben Coburn <btcoburn@silicodon.net>
* @author Kate Arzamastseva <pshns@ukr.net>
*/
function getRevisions($id, $first, $num, $chunk_size=8192, $media=false) {
global $cache_revinfo;
$cache =& $cache_revinfo;
if (!isset($cache[$id])) { $cache[$id] = array(); }
$revs = array();
$lines = array();
$count = 0;
if ($media) {
$file = mediaMetaFN($id, '.changes');
} else {
$file = metaFN($id, '.changes');
}
$num = max($num, 0);
$chunk_size = max($chunk_size, 0);
if ($first<0) {
$first = 0;
} else if (!$media && @file_exists(wikiFN($id)) || $media && @file_exists(mediaFN($id))) {
// skip current revision if the page exists
$first = max($first+1, 0);
}
if (!@file_exists($file)) { return $revs; }
if (filesize($file)<$chunk_size || $chunk_size==0) {
// read whole file
$lines = file($file);
if ($lines===false) { return $revs; }
} else {
// read chunks backwards
$fp = fopen($file, 'rb'); // "file pointer"
if ($fp===false) { return $revs; }
fseek($fp, 0, SEEK_END);
$tail = ftell($fp);
// chunk backwards
$finger = max($tail-$chunk_size, 0);
while ($count<$num+$first) {
fseek($fp, $finger);
$nl = $finger;
if ($finger>0) {
fgets($fp); // slip the finger forward to a new line
$nl = ftell($fp);
}
// was the chunk big enough? if not, take another bite
if($nl > 0 && $tail <= $nl){
$finger = max($finger-$chunk_size, 0);
continue;
}else{
$finger = $nl;
}
// read chunk
$chunk = '';
$read_size = max($tail-$finger, 0); // found chunk size
$got = 0;
while ($got<$read_size && !feof($fp)) {
$tmp = @fread($fp, max($read_size-$got, 0));
if ($tmp===false) { break; } //error state
$got += strlen($tmp);
$chunk .= $tmp;
}
$tmp = explode("\n", $chunk);
array_pop($tmp); // remove trailing newline
// combine with previous chunk
$count += count($tmp);
$lines = array_merge($tmp, $lines);
// next chunk
if ($finger==0) { break; } // already read all the lines
else {
$tail = $finger;
$finger = max($tail-$chunk_size, 0);
}
}
fclose($fp);
}
// skip parsing extra lines
$num = max(min(count($lines)-$first, $num), 0);
if ($first>0 && $num>0) { $lines = array_slice($lines, max(count($lines)-$first-$num, 0), $num); }
else if ($first>0 && $num==0) { $lines = array_slice($lines, 0, max(count($lines)-$first, 0)); }
else if ($first==0 && $num>0) { $lines = array_slice($lines, max(count($lines)-$num, 0)); }
// handle lines in reverse order
for ($i = count($lines)-1; $i >= 0; $i--) {
$tmp = parseChangelogLine($lines[$i]);
if ($tmp!==false) {
$cache[$id][$tmp['date']] = $tmp;
$revs[] = $tmp['date'];
}
}
return $revs;
}