-
Notifications
You must be signed in to change notification settings - Fork 57
/
Copy pathfeed2js.php
executable file
·417 lines (295 loc) · 13.7 KB
/
feed2js.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
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
<?php
/* Feed2JS : RSS feed to JavaScript src file
VERSION 2.5
ABOUT
This PHP script will take an RSS feed as a value of src="...."
and return a JavaScript file that can be linked
remotely from any other web page. Output includes
site title, link, and description as well as item site, link, and
description with these outouts contolled by extra parameters.
Developed by Alan Levine initially released 13.may.2004
http://cogdogblog.com/
PRIMARY SITE:
http://feed2js.org/
CODE:
https://github.com/cogdog/feed2js
Feed2JS makes use of the Magpie RSS parser from
http://magpierss.sourceforge.net/
------------- small print ---------------------------------------
GNU General Public License
Copyright (C) 2004-2013 Alan Levine
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; either version 2
of the License, or (at your option) any later version.
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
http://www.gnu.org/licenses/gpl.html
------------- small print ---------------------------------------
*/
// ERROR CHECKING FOR NO SOURCE -------------------------------
$script_msg = '';
$src = (isset($_GET['src'])) ? $_GET['src'] : '';
// trap for missing src param for the feed, use a dummy one so it gets displayed.
if (!$src or strpos($src, 'http://')!=0) $src= 'http://' . $_SERVER['SERVER_NAME'] . dirname($_SERVER['PHP_SELF']) . '/nosource.php';
// test for malicious use of script tags
if (strpos($src, '<script>')) {
$src = preg_replace("/(\<script)(.*?)(script>)/si", "SCRIPT DELETED", "$src");
die("Warning! Attempt to inject javascript detected. Aborted and tracking log updated.");
}
// MAGPIE SETUP ----------------------------------------------------
// access configuration settings
require_once('feed2js_config.php');
// check for utf encoding type
$utf = (isset($_GET['utf'])) ? $_GET['utf'] : 'n';
if ($utf == 'y') {
define('MAGPIE_CACHE_DIR', MAGPIE_DIR . 'cache_utf8/');
// chacrater encoding
define('MAGPIE_OUTPUT_ENCODING', 'UTF-8');
} else {
define('MAGPIE_CACHE_DIR', MAGPIE_DIR . 'cache/');
define('MAGPIE_OUTPUT_ENCODING', 'ISO-8859-1');
}
// GET VARIABLES ---------------------------------------------
// retrieve values from posted variables
// flag to show channel info
$chan = (isset($_GET['chan'])) ? $_GET['chan'] : 'n';
// variable to limit number of displayed items; default = 0 (show all, 100 is a safe bet to list a big list of feeds)
$num = (isset($_GET['num'])) ? $_GET['num'] : 0;
if ($num==0) $num = 100;
// indicator to show item description, 0 = no; 1=all; n>1 = characters to display
// values of -1 indicate to displa item without the title as a link
// (default=0)
$desc = (isset($_GET['desc'])) ? $_GET['desc'] : 0;
// flag to show author of items, values: no/yes (default=no)
$auth = (isset($_GET['au'])) ? 'y' : 'n';
// flag to show date of items, values: no/yes (default=no)
$date = (isset($_GET['date'])) ? $_GET['date'] : 'n';
// time zone offset for making local time,
// e.g. +7, =-10.5; 'feed' = print the time string in the RSS w/o conversion
$tz = (isset($_GET['tz'])) ? $_GET['tz'] : 'feed';
// flag to open target window in new window; n = same window, y = new window,
// other = targeted window, 'popup' = call JavaScript function popupfeed() to display
// in new window (default is n)
$targ = (isset($_GET['targ'])) ? $_GET['targ'] : 'n';
if ($targ == 'n') {
$target_window = ' target="_self"';
} elseif ($targ == 'y' ) {
$target_window = ' target="_blank"';
} elseif ($targ == 'popup') {
$target_window = ' onClick="popupfeed(this.href);return false"';
} else {
$target_window = ' target="' . $targ . '"';
}
// flag to show feed as full html output rather than JavaScript, used for alternative
// views for JavaScript-less users.
// y = display html only for non js browsers (NO LONGER USED)
// n = default (JavaScript view)
// a = display javascript output but allow HTML
// p = display text only items but convert linefeeds to BR tags
// default setting for no conversion of linebreaks
$html = (isset($_GET['html'])) ? $_GET['html'] : 'n';
$br = ' ';
if ($html == 'a') {
$desc = 1;
} elseif ($html == 'p') {
$br = '<br />';
}
// optional parameter to use different class for the CSS container
$rss_box_id = (isset($_GET['css'])) ? '-' . $_GET['css'] : '';
// optional parameter to use different class for the CSS container
$play_podcast = (isset($_GET['pc'])) ? $_GET['pc'] : 'n';
// PARSE FEED and GENERATE OUTPUT -------------------------------
// This is where it all happens!
// check if site has a setting to restrict to a url
if (isset($restrict_url)) {
if (strpos($src, 'https://') == 0) {
$src_host = substr($src, 8);
} else {
$src_host = substr($src, 7);
}
$src_pos = strpos($src_host,"/");
if ($src_pos) {
$src_host = substr($src_host,0, $src_pos);
}
}
if (isset($restrict_url) && substr($src_host, strlen($src_host)-strlen($restrict_url)) != $restrict_url) {
$src = htmlspecialchars($src);
$str.= "document.write('<div class=\"rss-box" . $rss_box_id .
"\"><p class=\"rss-item\"><em>Error:</em> on feed <strong>" .
$src . "</strong>. " .
"Feeds are allowed only from URLs from the sites http://*" .
$restrict_url . " and https://*" . $restrict_url .
"</p></div>');\n";
} else {
$rss = @fetch_rss( $src );
// begin javascript output string for channel info
$str= "document.write('<div class=\"rss-box" . $rss_box_id . "\">');\n";
// no feed found by magpie, return error statement
if (!$rss) {
//$src needs to be escape before being displayed as an error message, in order to prevent XSS
$src = htmlspecialchars($src);
$str.= "document.write('<p class=\"rss-item\">$script_msg<em>Error:</em> Feed failed! Causes may be (1) No data found for RSS feed $src; (2) There are no items are available for this feed; (3) The RSS feed does not validate.<br /><br /> Please verify that the URL <a href=\"$src\">$src</a> works first in your browser and that the feed passes a <a href=\"http://feedvalidator.org/check.cgi?url=" . urlencode($src) . "\">validator test</a>.</p></div>');\n";
} else {
// Create CONNECTION CONFIRM
// create output string for local javascript variable to let
// browser know that the server has been contacted
$feedcheck_str = "feed2js_ck = true;\n\n";
// we have a feed, so let's process
if ($chan == 'y') {
// output channel title linked and description
$str.= "document.write('<p class=\"rss-title\"><a class=\"rss-title\" href=\"" . trim($rss->channel['link']) . '"' . $target_window . ">" . addslashes(strip_returns($rss->channel['title'])) . "</a><br /><span class=\"rss-item\">" . addslashes(strip_returns(strip_tags($rss->channel['description']))) . "</span></p>');\n";
} elseif ($chan == 'title') {
// output title only with link
$str.= "document.write('<p class=\"rss-title\"><a class=\"rss-title\" href=\"" . trim($rss->channel['link']) . '"' . $target_window . ">" . addslashes(strip_returns($rss->channel['title'])) . "</a></p>');\n";
} elseif ($chan == 'titlelinkno') {
// output title only with no link
$str.= "document.write('<p class=\"rss-title\">" . addslashes(strip_returns($rss->channel['title'])) . "</p>');\n";
} elseif ($chan == 'linkno') {
// output title and descript only with no link
$str.= "document.write('<p class=\"rss-title\">" . addslashes(strip_returns($rss->channel['title'])) . "<br /><span class=\"rss-item\">" . addslashes(strip_returns(strip_tags($rss->channel['description']))) . "</span></p>');\n";
}
// begin item listing
$str.= "document.write('<ul class=\"rss-items\">');\n";
// Walk the items and process each one
$all_items = array_slice($rss->items, 0, $num);
foreach ( $all_items as $item ) {
// set defaults thanks RPFK
if (!isset($item['summary'])) $item['summary'] = '';
$more_link = '';
// create output for item author
$author_str = '';
if ($auth == 'y') {
if (isset($item['dc']['creator'])) {
$author_str = ' <span class="rss-item-auth">(' . addslashes(strip_tags($item['dc']['creator'])) . ')</span>';
} else {
if (isset($item['author_name'])) {
$author_str = ' <span class="rss-item-auth">(' . addslashes(strip_tags($item['author_name'])) . ')</span>';
}
}
}
if ($item['link']) {
// link url
$my_url = addslashes($item['link']);
} elseif ($item['guid']) {
// feeds lacking item -> link
$my_url = ($item['guid']);
} else {
// nothing to link to
$my_url = false;
}
if ($desc < 0) {
$str.= "document.write('<li class=\"rss-item\">');\n";
} elseif ($item['title']) {
// format item title
$my_title = addslashes(strip_returns($item['title']));
// write the title strng
if ($my_url) {
// link title
$str.= "document.write('<li class=\"rss-item\"><a class=\"rss-item\" href=\"" . trim($my_url) . "\"" . $target_window . '>' . $my_title . '</a>' . $author_str . "<br />');\n";
} else {
// no link
$str.= "document.write('<li class=\"rss-item\">" . $my_title . ' ' . $author_str . "<br />');\n";
}
} else {
$str.= "document.write('<li class=\"rss-item\">');\n";
if ($my_url) {
// if no title, build a link to tag on the description
$more_link = " <a class=\"rss-item\" href=\"" . trim($my_url) . '"' . $target_window . ">«details»</a>";
}
}
// print out date if option indicated
if ($date == 'y') {
if ($tz == 'feed') {
// echo the date/time stamp reported in the feed
if ($item['pubdate'] != '') {
// RSS 2.0 is already formatted, so just use it
$pretty_date = $item['pubdate'];
} elseif ($item['published'] != "") {
// ATOM 1.0 format, remove the "T" and "Z" and the time zone offset
$pretty_date = str_replace("T", " ", $item['published']);
$pretty_date= str_replace("Z", " ", $pretty_date);
} elseif ($item['issued'] != "") {
// ATOM 0.3 format, remove the "T" and "Z" and the time zone offset
$pretty_date = str_replace("T", " ", $item['issued']);
$pretty_date= str_replace("Z", " ", $pretty_date);
} elseif ( $item['dc']['date'] != "") {
// RSS 1.0, remove the "T" and the time zone offset
$pretty_date = str_replace("T", " ", $item['dc']['date']);
$pretty_date = substr($pretty_date, 0,-6);
} else {
// no time/date stamp,
$pretty_date = 'n/a';
}
} else {
// convert to local time via conversion to GMT + offset
// adjust local server time to GMT and then adjust time according to user
// entered offset.
// let's see what kind of timestamps we can pull...
if ($item['date_timestamp'] != "") {
$ts = $item['date_timestamp'];
} elseif ($item['published'] != "") {
$ts = strtotime($item['published']);
} elseif ($item['issued'] != "") {
$ts = strtotime($item['issued']);
} elseif ( $item['dc']['date'] != "") {
$ts = strtotime($item['dc']['date']);
} else {
$ts = time();
}
$pretty_date = date($date_format, $ts - $tz_offset + $tz * 3600);
}
$str.= "document.write('<span class=\"rss-date\">$pretty_date</span><br />');\n";
}
// link to podcast media if availavle
if ($play_podcast == 'y' and is_array($item['enclosure'])) {
$str.= "document.write('<div class=\"pod-play-box\">');\n";
for ($i = 0; $i < count($item['enclosure']); $i++) {
// display only if enclosure is a valid URL
//if (strpos($item['enclosure'][$i]['url'], 'http://')!=0) {
$str.= "document.write('<a class=\"pod-play\" href=\"" . trim($item['enclosure'][$i]['url']) . "\" title=\"Play Now\" target=\"_blank\"><em>Play</em> <span> " . substr(trim($item['enclosure'][$i]['url']), -3) . "</span></a> ');\n";
//}
}
$str.= "document.write('</div>');\n";
}
// output description of item if desired
if ($desc) {
if ($item['atom_content']) {
// Atom content - note that wordpress.com feeds return bad data here "A"
// so revert to description if this is the case.
$my_blurb = ($item['atom_content'] == "A") ? $item['description'] : html_entity_decode ( $item['atom_content'], ENT_NOQUOTES, MAGPIE_OUTPUT_ENCODING);
} else if ($item['content']) {
// Atom/encocded content support (thanks David Carter-Tod)
$my_blurb = html_entity_decode ( $item['content'], ENT_NOQUOTES, MAGPIE_OUTPUT_ENCODING);
} else {
$my_blurb = $item['summary'];
}
// strip html
if ($html != 'a') $my_blurb = strip_tags($my_blurb);
// trim descriptions
if ($desc > 1) {
// display specified substring numbers of chars;
// html is stripped to prevent cut off tags
// make sure we dont chop UTF-8 characters
if ($utf == 'y') {
$my_blurb = mb_substr($my_blurb, 0, $desc, 'UTF-8') . '...';
} else {
$my_blurb = substr($my_blurb, 0, $desc) . '...';
}
}
$str.= "document.write('" . addslashes(strip_returns($my_blurb, $br)) . "');\n";
}
$str.= "document.write('$more_link</li>');\n";
}
$str .= "document.write('</ul></div>');\n";
} // end restrict_url
}
// Render as JavaScript
// START OUTPUT
// headers to tell browser this is a JS file
if ($rss) header("Content-type: application/x-javascript");
// Spit out the results as the series of JS statements
echo $feedcheck_str . $str;
?>