aboutsummaryrefslogtreecommitdiffstats
path: root/feed.php
blob: ef4647907ed8539616b31606253e42f24f270da1 (plain)
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
<?php
// +-----------------------------------------------------------------------+
// | PhpWebGallery - a PHP based picture gallery                           |
// | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
// | Copyright (C) 2003-2005 PhpWebGallery Team - http://phpwebgallery.net |
// +-----------------------------------------------------------------------+
// | branch        : BSF (Best So Far)
// | file          : $RCSfile$
// | last update   : $Date$
// | last modifier : $Author$
// | revision      : $Revision$
// +-----------------------------------------------------------------------+
// | This program is free software; you can redistribute it and/or modify  |
// | it under the terms of the GNU General Public License as published by  |
// | the Free Software Foundation                                          |
// |                                                                       |
// | This program is distributed in the hope that it will be useful, but   |
// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
// | General Public License for more details.                              |
// |                                                                       |
// | You should have received a copy of the GNU General Public License     |
// | along with this program; if not, write to the Free Software           |
// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
// | USA.                                                                  |
// +-----------------------------------------------------------------------+

define('PHPWG_ROOT_PATH','./');
include_once(PHPWG_ROOT_PATH.'include/common.inc.php');

// +-----------------------------------------------------------------------+
// |                               functions                               |
// +-----------------------------------------------------------------------+

/**
 * new comments between two dates, according to authorized categories
 *
 * @param string start (mysql datetime format)
 * @param string end (mysql datetime format)
 * @param string forbidden categories (comma separated)
 * @return array comment ids
 */
function new_comments($start, $end)
{
  global $user;
  
  $query = '
SELECT DISTINCT c.id AS comment_id
  FROM '.COMMENTS_TABLE.' AS c
     , '.IMAGE_CATEGORY_TABLE.' AS ic
  WHERE c.image_id = ic.image_id
    AND c.validation_date > \''.$start.'\'
    AND c.validation_date <= \''.$end.'\'
    AND category_id NOT IN ('.$user['forbidden_categories'].')
;';
  return array_from_query($query, 'comment_id');
}

/**
 * unvalidated at a precise date
 *
 * Comments that are registered and not validated yet on a precise date
 *
 * @param string date (mysql datetime format)
 * @return array comment ids
 */
function unvalidated_comments($date)
{
  $query = '
SELECT DISTINCT id
  FROM '.COMMENTS_TABLE.'
  WHERE date <= \''.$date.'\'
    AND (validated = \'false\'
         OR validation_date > \''.$date.'\')
;';
  return array_from_query($query, 'id');
}

/**
 * new elements between two dates, according to authorized categories
 *
 * @param string start (mysql datetime format)
 * @param string end (mysql datetime format)
 * @param string forbidden categories (comma separated)
 * @return array element ids
 */
function new_elements($start, $end)
{
  global $user;
  
  $query = '
SELECT DISTINCT image_id
  FROM '.IMAGES_TABLE.' INNER JOIN '.IMAGE_CATEGORY_TABLE.' ON image_id = id
  WHERE date_available > \''.$start.'\'
    AND date_available <= \''.$end.'\'
    AND category_id NOT IN ('.$user['forbidden_categories'].')
;';
  return array_from_query($query, 'image_id');
}

/**
 * updated categories between two dates, according to authorized categories
 *
 * @param string start (mysql datetime format)
 * @param string end (mysql datetime format)
 * @param string forbidden categories (comma separated)
 * @return array element ids
 */
function updated_categories($start, $end)
{
  global $user;
  
  $query = '
SELECT DISTINCT category_id
  FROM '.IMAGES_TABLE.' INNER JOIN '.IMAGE_CATEGORY_TABLE.' ON image_id = id
  WHERE date_available > \''.$start.'\'
    AND date_available <= \''.$end.'\'
    AND category_id NOT IN ('.$user['forbidden_categories'].')
;';
  return array_from_query($query, 'category_id');
}

/**
 * new registered users between two dates
 *
 * @param string start (mysql datetime format)
 * @param string end (mysql datetime format)
 * @return array user ids
 */
function new_users($start, $end)
{
  $query = '
SELECT user_id
  FROM '.USER_INFOS_TABLE.'
  WHERE registration_date > \''.$start.'\'
    AND registration_date <= \''.$end.'\'
;';
  return array_from_query($query, 'user_id');
}

/**
 * currently waiting pictures
 *
 * @return array waiting ids
 */
function waiting_elements()
{
  $query = '
SELECT id
  FROM '.WAITING_TABLE.'
  WHERE validated = \'false\'
;';

  return array_from_query($query, 'id');
}

/**
 * What's new between two dates ?
 *
 * Informations : number of new comments, number of new elements, number of
 * updated categories. Administrators are also informed about : number of
 * unvalidated comments, number of new users (TODO : number of unvalidated
 * elements)
 *
 * @param string start date (mysql datetime format)
 * @param string end date (mysql datetime format)
 */
function news($start, $end)
{
  global $user;

  $news = array();
  
  $nb_new_comments = count(new_comments($start, $end));
  if ($nb_new_comments > 0)
  {
    array_push($news, sprintf(l10n('%d new comments'), $nb_new_comments));
  }

  $nb_new_elements = count(new_elements($start, $end));
  if ($nb_new_elements > 0)
  {
    array_push($news, sprintf(l10n('%d new elements'), $nb_new_elements));
  }

  $nb_updated_categories = count(updated_categories($start, $end));
  if ($nb_updated_categories > 0)
  {
    array_push($news, sprintf(l10n('%d categories updated'),
                              $nb_updated_categories));
  }
  
  if ('admin' == $user['status'])
  {
    $nb_unvalidated_comments = count(unvalidated_comments($end));
    if ($nb_unvalidated_comments > 0)
    {
      array_push($news, sprintf(l10n('%d comments to validate'),
                                $nb_unvalidated_comments));
    }

    $nb_new_users = count(new_users($start, $end));
    if ($nb_new_users > 0)
    {
      array_push($news, sprintf(l10n('%d new users'), $nb_new_users));
    }

    $nb_waiting_elements = count(waiting_elements());
    if ($nb_waiting_elements > 0)
    {
      array_push(
        $news,
        sprintf(
          l10n('%d waiting elements'),
          $nb_waiting_elements
          )
        );
    }
  }

  return $news;
}

/**
 * explodes a MySQL datetime format (2005-07-14 23:01:37) in fields "year",
 * "month", "day", "hour", "minute", "second".
 *
 * @param string mysql datetime format
 * @return array
 */
function explode_mysqldt($mysqldt)
{
  $date = array();
  list($date['year'],
       $date['month'],
       $date['day'],
       $date['hour'],
       $date['minute'],
       $date['second'])
    = preg_split('/[-: ]/', $mysqldt);

  return $date;
}

/**
 * creates a Unix timestamp (number of seconds since 1970-01-01 00:00:00
 * GMT) from a MySQL datetime format (2005-07-14 23:01:37)
 *
 * @param string mysql datetime format
 * @return int timestamp
 */
function mysqldt_to_ts($mysqldt)
{
  $date = explode_mysqldt($mysqldt);
  return mktime($date['hour'], $date['minute'], $date['second'],
                $date['month'], $date['day'], $date['year']);
}

/**
 * creates an ISO 8601 format date (2003-01-20T18:05:41+04:00) from Unix
 * timestamp (number of seconds since 1970-01-01 00:00:00 GMT)
 *
 * function copied from Dotclear project http://dotclear.net
 *
 * @param int timestamp
 * @return string ISO 8601 date format
 */
function ts_to_iso8601($ts)
{
  $tz = date('O',$ts);
  $tz = substr($tz, 0, -2).':'.substr($tz, -2);
  return date('Y-m-d\\TH:i:s',$ts).$tz;
}

// +-----------------------------------------------------------------------+
// |                            initialization                             |
// +-----------------------------------------------------------------------+

// clean $user array (include/user.inc.php has been executed)
$user = array();

// echo '<pre>'.generate_key(50).'</pre>';
if (isset($_GET['feed'])
    and preg_match('/^[A-Za-z0-9]{50}$/', $_GET['feed']))
{
  $query = '
SELECT uf.user_id AS id,
       ui.status,
       uf.last_check,
       u.'.$conf['user_fields']['username'].' AS username
  FROM '.USER_FEED_TABLE.' AS uf
    INNER JOIN '.USER_INFOS_TABLE.' AS ui
      ON ui.user_id = uf.user_id
    INNER JOIN '.USERS_TABLE.' AS u
      ON u.'.$conf['user_fields']['id'].' = uf.user_id
  WHERE uf.id = \''.$_GET['feed'].'\'
;';
  $user = mysql_fetch_array(pwg_query($query));
}
else
{
  echo l10n('Unknown feed identifier');
  exit();
}

$user['forbidden_categories'] = calculate_permissions($user['id'],
                                                      $user['status']);
if ('' == $user['forbidden_categories'])
{
  $user['forbidden_categories'] = '0';
}

list($dbnow) = mysql_fetch_row(pwg_query('SELECT NOW();'));

include_once(PHPWG_ROOT_PATH.'include/feedcreator.class.php');

$rss = new UniversalFeedCreator();

$rss->title = $conf['gallery_title'].', notifications';
$rss->title.= ' (as '.$user['username'].')';

$rss->link = $conf['gallery_url'];

// +-----------------------------------------------------------------------+
// |                            Feed creation                              |
// +-----------------------------------------------------------------------+

$news = news($user['last_check'], $dbnow);

if (count($news) > 0)
{
  $item = new FeedItem(); 
  $item->title = sprintf(l10n('New on %s'), $dbnow);
  $item->link = $conf['gallery_url'];
  
  // content creation
  $item->description = '<ul>';
  foreach ($news as $line)
  {
    $item->description.= '<li>'.$line.'</li>';
  }
  $item->description.= '</ul>';
  $item->descriptionHtmlSyndicated = true;
  
  $item->date = ts_to_iso8601(mysqldt_to_ts($dbnow));
  $item->author = 'PhpWebGallery notifier'; 
  
  $rss->addItem($item);
}

$query = '
UPDATE '.USER_FEED_TABLE.'
  SET last_check = \''.$dbnow.'\'
  WHERE id = \''.$_GET['feed'].'\'
;';
pwg_query($query);

// send XML feed
echo $rss->saveFeed('RSS2.0', '', true);
?>