-
Notifications
You must be signed in to change notification settings - Fork 0
/
rss.php
332 lines (278 loc) · 13.5 KB
/
rss.php
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
<?php
# Copyright (c) 2003-2005, Jannis Hermanns (on behalf the Serendipity Developer Team)
# All rights reserved. See LICENSE file for licensing details
if (!headers_sent() && session_status() != PHP_SESSION_ACTIVE) {
session_cache_limiter('public');
}
header('Content-Type: text/xml; charset=utf-8');
@define('IN_RSS', true);
include('serendipity_config.inc.php');
include(S9Y_INCLUDE_PATH . 'include/functions_rss.inc.php');
if ($serendipity['cors']) {
header('Access-Control-Allow-Origin: *'); // Allow RSS feeds to be read by javascript
}
if (!empty($_GET['url'])) {
$_ext = pathinfo(parse_url($_GET['url'], PHP_URL_PATH), PATHINFO_EXTENSION);
$_name = pathinfo(parse_url($_GET['url'], PHP_URL_PATH), PATHINFO_FILENAME);
}
$version = $_GET['version'] ?? null;
$description = $serendipity['blogDescription'];
$title = $serendipity['blogTitle'];
$comments = FALSE;
if (empty($version)) {
list($version) = serendipity_discover_rss(($_name ?? null), ($_ext ?? null));
}
if (isset($_GET['category'])) {
$serendipity['GET']['category'] = $_GET['category'];
}
if (isset($_GET['viewAuthor'])) {
$serendipity['GET']['viewAuthor'] = $_GET['viewAuthor'];
}
if (!isset($_GET['type'])) {
$_GET['type'] = 'content';
}
if ($_GET['type'] == 'comments' && !isset($_GET['cid'])) {
$_GET['cid'] = null;
}
if (!empty($_SERVER['HTTP_USER_AGENT']) && stristr($_SERVER['HTTP_USER_AGENT'], 'feedburner')) {
$_GET['nocache'] = true;
}
$serendipity['view'] = 'feed';
switch ($_GET['type']) {
case 'comments_and_trackbacks':
case 'trackbacks':
case 'comments':
$latest_entry = serendipity_fetchComments($_GET['cid'], 1, 'co.id desc', false, $_GET['type']);
break;
case 'content':
default:
$latest_entry = serendipity_fetchEntries(null, false, 1, false, false, 'last_modified DESC', '', false, true);
break;
}
if (!isset($_GET['nocache'])) {
/*
* Caching logic - Do not send feed if nothing has changed
* Implementation inspired by Simon Willison [http://simon.incutio.com/archive/2003/04/23/conditionalGet], Thiemo Maettig
*/
// See if the client has provided the required headers.
// Always convert the provided header into GMT timezone to allow comparing to the server-side last-modified header
$modified_since = !empty($_SERVER['HTTP_IF_MODIFIED_SINCE'])
? gmdate('D, d M Y H:i:s \G\M\T', strtotime(stripslashes($_SERVER['HTTP_IF_MODIFIED_SINCE'])))
: false;
$none_match = !empty($_SERVER['HTTP_IF_NONE_MATCH'])
? str_replace('"', '', stripslashes($_SERVER['HTTP_IF_NONE_MATCH']))
: false;
if (is_array($latest_entry) && isset($latest_entry[0]['last_modified'])) {
$last_modified = gmdate('D, d M Y H:i:s \G\M\T', serendipity_serverOffsetHour($latest_entry[0]['last_modified'], false));
$etag = '"' . $last_modified . '"';
header('Last-Modified: ' . $last_modified);
header('ETag: ' . $etag);
if (($none_match == $last_modified && $modified_since == $last_modified) ||
(!$none_match && $modified_since == $last_modified) ||
(!$modified_since && $none_match == $last_modified)) {
header(serendipity_getServerProtocol() . ' 304 Not Modified', true, 304); // force
header('Status: 304 Not Modified'); // overwrite Status 200
return;
}
}
}
if (isset($modified_since)
&& ((isset($_SERVER['HTTP_USER_AGENT']) && stristr($_SERVER['HTTP_USER_AGENT'], 'planet') !== FALSE) || $serendipity['enforce_RFC2616'])) {
// People shall get a usual HTTP response according to RFC2616. See serendipity_config.inc.php for details
$modified_since = FALSE;
}
if (!isset($modified_since)) {
$modified_since = false;
}
switch ($_GET['type']) {
case 'comments_and_trackbacks':
case 'trackbacks':
case 'comments':
$entries = serendipity_fetchComments($_GET['cid'], (int)$serendipity['RSSfetchLimit'], 'co.id desc', false, $_GET['type']);
$description = $title . ' - ' . $description;
if (isset($_GET['cid'])) {
$title = $title . ' - ' . COMMENTS_FROM . ' "' . $latest_entry[0]['title'] . '"';
} else {
$title = $title . ' - ' . COMMENTS;
}
$comments = TRUE;
break;
case 'content':
default:
if (isset($_GET['all']) && $_GET['all']) {
// Fetch all entries in reverse order for later importing. Fetch sticky entries as normal entries.
$entries = serendipity_fetchEntries(null, true, '', false, false, 'id ASC', '', false, true);
} else {
$entries = serendipity_fetchEntries(null, true, (int)$serendipity['RSSfetchLimit'], false, $modified_since, 'timestamp DESC', '', false, true);
}
break;
}
if (isset($serendipity['serendipityRealname'])) {
$title .= ' (' . LOGIN . ': ' . $serendipity['serendipityRealname'] . ')';
}
if (!empty($serendipity['GET']['category'])) {
$cInfo = serendipity_fetchCategoryInfo((int)$serendipity['GET']['category']);
$title = serendipity_utf8_encode(serendipity_specialchars($title . ' - '. $cInfo['category_name']));
} elseif (!empty($serendipity['GET']['viewAuthor'])) {
list($aInfo) = serendipity_fetchAuthor((int)$serendipity['GET']['viewAuthor']);
$title = serendipity_utf8_encode(serendipity_specialchars($aInfo['realname'] . ' - '. $title ));
} else {
$title = serendipity_utf8_encode(serendipity_specialchars($title));
}
$description = serendipity_utf8_encode(serendipity_specialchars($description));
$metadata = array(
'title' => $title,
'description' => $description,
'language' => $serendipity['lang'],
'additional_fields' => array(),
'link' => $serendipity['baseURL'],
'email' => $serendipity['blogMail'],
'fullFeed' => false,
'showMail' => false,
'version' => $version
);
if (serendipity_get_config_var('feedBannerURL') != '') {
$img = serendipity_get_config_var('feedBannerURL');
$w = serendipity_get_config_var('feedBannerWidth');
$h = serendipity_get_config_var('feedBannerHeight');
} elseif ($banner = serendipity_getTemplateFile('img/rss_banner.png', 'serendipityPath')) {
$img = serendipity_getTemplateFile('img/rss_banner.png', 'baseURL');
$i = getimagesize($banner);
$w = $i[0];
$h = $i[1];
} else {
$img = $serendipity['baseURL'] . $serendipity['templatePath'] . 'styx_logo_150.png';
$w = 120;
$h = 58;
}
$metadata['additional_fields']['image'] = <<<IMAGE
<image>
<url>$img</url>
<title>RSS: $title - $description</title>
<link>{$serendipity['baseURL']}</link>
<width>$w</width>
<height>$h</height>
</image>
IMAGE;
$metadata['additional_fields']['image_atom10'] = <<<IMAGE
<icon><svg xmlns="http://www.w3.org/2000/svg" version="1.1" style="vertical-align: text-bottom; width: 2.5em; height: 2.5em; float: right;" class="pr-1" id="RSSicon" viewBox="0 0 256 256"><defs><linearGradient x1="0.085" y1="0.085" x2="0.915" y2="0.915" id="RSSg"><stop offset="0.0" stop-color="#E3702D"></stop><stop offset="0.1071" stop-color="#EA7D31"></stop><stop offset="0.3503" stop-color="#F69537"></stop><stop offset="0.5" stop-color="#FB9E3A"></stop><stop offset="0.7016" stop-color="#EA7C31"></stop><stop offset="0.8866" stop-color="#DE642B"></stop><stop offset="1.0" stop-color="#D95B29"></stop></linearGradient></defs><rect width="256" height="256" rx="55" ry="55" x="0" y="0" fill="#CC5D15"></rect><rect width="246" height="246" rx="50" ry="50" x="5" y="5" fill="#F49C52"></rect><rect width="236" height="236" rx="47" ry="47" x="10" y="10" fill="url(#RSSg)"></rect><circle cx="68" cy="189" r="24" fill="#FFF"></circle><path d="M160 213h-34a82 82 0 0 0 -82 -82v-34a116 116 0 0 1 116 116z" fill="#FFF"></path><path d="M184 213A140 140 0 0 0 44 73 V 38a175 175 0 0 1 175 175z" fill="#FFF"></path></svg></icon>
IMAGE;
$metadata['additional_fields']['image_rss10_channel'] = '<image rdf:resource="' . $img . '" />';
$metadata['additional_fields']['image_rss10_rdf'] = <<<IMAGE
<image rdf:about="$img">
<url>$img</url>
<title>RSS: $title - $description</title>
<link>{$serendipity['baseURL']}</link>
<width>$w</width>
<height>$h</height>
</image>
IMAGE;
// Now, if set, stitch together any fields that have been configured in the syndication plugin.
// First, do some sanity checks
$metadata['additional_fields']['channel'] = '';
$rssFields = array('feedManagingEditor' => 'managingEditor', 'feedWebmaster' => 'webMaster', 'feedTtl' => 'ttl', 'feedPubDate' => 'pubDate');
$pubDateFallback = serendipity_get_config_var('last_template_change');
foreach( $rssFields AS $configName => $field) {
$fieldValue = serendipity_get_config_var($configName);
switch($field) {
case 'pubDate':
if (serendipity_db_bool($fieldValue)) {
$pdate = empty($entries[0]) ? $pubDateFallback : ($entries[0]['last_modified'] ?? 1556988924); // ternary fake timestamp since probably only used when runtime errors appear
$fieldValue = gmdate('D, d M Y H:i:s \G\M\T', (int) $pdate);
} else {
$fieldValue = '';
}
break;
// Each new RSS-field which needs rewrite of its content should get its own case here.
default:
break;
}
if ($fieldValue != '') {
$metadata['additional_fields']['channel'] .= '<' . $field . '>' . $fieldValue . '</' . $field . '>' . "\n";
}
}
if (is_array($metadata['additional_fields'])) {
// Fix up array keys, because "." are not allowed when wanting to output using Smarty
foreach($metadata['additional_fields'] AS $_aid => $af) {
$aid = str_replace('.', '', $_aid);
$metadata['additional_fields'][$aid] = $af;
}
}
$metadata['fullFeed'] = serendipity_get_config_var('feedFull', false);
if ($metadata['fullFeed'] === 'client') {
if (array_key_exists('fullFeed', $_GET) || array_key_exists('fullFeed', $serendipity['GET'])) {
$metadata['fullFeed'] = true;
} else {
$metadata['fullFeed'] = false;
}
}
if ($_GET['type'] == 'content' && !isset($_GET['category']) && !isset($serendipity['GET']['tag']) &&
serendipity_db_bool(serendipity_get_config_var('feedForceCustom', false)) &&
!preg_match('@FeedBurn@i', $_SERVER['HTTP_USER_AGENT']) && // the hardcoded pass for feedburner (it is officially shut down since end of 2012, but still alive in 2018) is for BC. New services should just use the forceLocal-param
!isset($_GET['forceLocal']))
{
header('Status: 302 Found');
header('Location: ' . serendipity_get_config_var('feedCustom'));
exit;
}
$metadata['showMail'] = serendipity_db_bool(serendipity_get_config_var('feedShowMail', $metadata['showMail']));
$file_version = preg_replace('@[^0-9a-z\.-_]@i', '', $version);
$metadata['template_file'] = serendipity_getTemplateFile('feed_' . $file_version . '.tpl', 'serendipityPath');
serendipity_smarty_init();
serendipity_plugin_api::hook_event('frontend_rss', $metadata);
if (!$metadata['template_file'] || $metadata['template_file'] == 'feed_' . $file_version . '.tpl') {
die("Invalid RSS version specified or RSS-template file 'feed_$file_version.tpl' not found\n");
}
$self_url = ((isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ? 'https://' : 'http://') . $_SERVER['HTTP_HOST'] . serendipity_specialchars($_SERVER['REQUEST_URI']);
if (!is_array($entries)) {
$entries = array();
}
if (!empty($entries[0]['last_modified'])) {
$gm_modified = gmdate('Y-m-d\TH:i:s\Z', serendipity_serverOffsetHour($entries[0]['last_modified']));
} else {
$gm_modified = gmdate('Y-m-d\TH:i:s\Z', serendipity_serverOffsetHour());
}
serendipity_printEntries_rss($entries, $version, $comments, $metadata['fullFeed'], $metadata['showMail']);
$namespace_hook = 'frontend_display:unknown:namespace';
$once_display_dat = '';
switch($version) {
case 'opml1.0':
$namespace_hook = 'frontend_display:opml-1.0:namespace';
break;
case '1.0':
$namespace_hook = 'frontend_display:rss-1.0:namespace';
serendipity_plugin_api::hook_event('frontend_display:rss-1.0:once', $entries);
$once_display_dat = $entries['display_dat'] ?? null;
unset($entries['display_dat']);
break;
case '2.0':
$namespace_hook = 'frontend_display:rss-2.0:namespace';
break;
case 'rdf':
$namespace_hook = 'frontend_display:rss-rdf:namespace';
break;
case 'atom1.0':
// For people wanting extra RFC compliance
// header('Content-Type: application/atom+xml; charset=utf-8');
$namespace_hook = 'frontend_display:atom-1.0:namespace';
break;
}
serendipity_plugin_api::hook_event($namespace_hook, $entries);
$namespace_display_dat = $entries['display_dat'] ?? null;
$channel_display_dat = $entries['channel_dat'] ?? null;
unset($entries['display_dat']);
unset($entries['channel_dat']);
$serendipity['smarty']->assignByRef('metadata', $metadata);
$serendipity['smarty']->assignByRef('entries', $entries);
$serendipity['smarty']->assignByRef('namespace_display_dat', $namespace_display_dat);
$serendipity['smarty']->assignByRef('channel_display_dat', $channel_display_dat);
$serendipity['smarty']->assignByRef('once_display_dat', $once_display_dat);
$serendipity['smarty']->assign(
array(
'is_comments' => $comments,
'last_modified' => $gm_modified,
'self_url' => $self_url,
)
);
$serendipity['smarty']->display($metadata['template_file']);
/* vim: set sts=4 ts=4 expandtab : */