cryptx / cryptx.php

cryptx.php in CryptX 2.4.2, at cryptx.php

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1	<?php
2	/*
3	Plugin Name: CryptX
4	Plugin URI: http://weber-nrw.de/wordpress/cryptx/
5	Description: No more SPAM by spiders scanning you site for email adresses. With CryptX you can hide all your email adresses, with and without a mailto-link, by converting them using javascript or UNICODE. Although you can choose to add a mailto-link to all unlinked email adresses with only one klick at the settings. That's great, isn't it?
6	Version: 2.4.2
7	Author: Ralf Weber
8	Author URI: http://weber-nrw.de/
9	*/
10
11	/////////////////////////////////////////////////////////////////////////////
12
13	/**
14	* @internal prevent from direct calls
15	*/
16	if (!defined('ABSPATH')) {
17	return ;
18	}
19
20	/**
21	* @internal prevent from second inclusion
22	*/
23	if (!class_exists('cryptX')) {
24
25	/////////////////////////////////////////////////////////////////////////////
26
27	load_plugin_textdomain('cryptx', PLUGINDIR . '/' . dirname(plugin_basename (__FILE__)) . '/languages');
28
29	$cryptX_var = (array) get_option('cryptX');
30
31	/**
32	* "CryptX" WordPress Plugin
33	*
34	* @author Ralf Weber <ralf@weber-nrw.de>
35	* @license http://opensource.org/licenses/gpl-license.php GNU Public License
36	*/
37	Class cryptX {
38
39	// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40
41	/**
42	* Constructor
43	*
44	* This constructor attaches the needer plugin hook callbacks
45	*/
46	function cryptX() {
47
48	global $cryptX_var;
49
50	// attach the converstion handlers
51	//
52	if (@$cryptX_var[theContent]) {
53	$this->filter('the_content');
54	}
55	if (@$cryptX_var[theExcerpt]) {
56	$this->filter('the_excerpt');
57	}
58	if (@$cryptX_var[commentText]) {
59	$this->filter('comment_text');
60	}
61
62	// attach to admin menu
63	//
64	if (is_admin()) {
65	add_action('admin_menu',
66	array(&$this, 'menu')
67	);
68	}
69
70	// attach to plugin installation
71	//
72	add_action(
73	'activate_' . str_replace(
74	DIRECTORY_SEPARATOR, '/',
75	str_replace(
76	realpath(ABSPATH . PLUGINDIR) . DIRECTORY_SEPARATOR,
77	'', __FILE__
78	)
79	),
80	array(&$this, 'install')
81	);
82
83	// attach javascript to Header
84	//
85	if (@$cryptX_var[java]) {
86	add_action(
87	'wp_head',
88	array(&$this, 'header')
89	);
90	}
91
92	add_action('admin_menu',
93	array(&$this, 'cryptx_meta_box')
94	);
95
96	add_action('wp_insert_post',
97	array(&$this, 'cryptx_insert_post')
98	);
99	add_action('wp_update_post',
100	array(&$this, 'cryptx_insert_post')
101	);
102
103	} // End function
104
105	// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
106
107	function filter($apply)
108	{
109	global $cryptX_var;
110
111	if (@$cryptX_var[autolink]) {
112	add_filter($apply,
113	array(&$this, 'autolink'),
114	5);
115	}
116
117	add_filter($apply, array($this, 'encryptx'), 11);
118	add_filter($apply, array($this, 'linktext'), 12);
119	}
120
121	// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
122
123
124	function linktext($content)
125	{
126	global $post;
127	$cryptxoff = false;
128	$cryptxoffmeta = get_post_meta($post->ID,'cryptxoff',true);
129	if ($cryptxoffmeta == "true") {
130	$cryptxoff = true;
131	}
132	if ($cryptxoff == false) {
133	$content = preg_replace_callback("/([_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)(\.[a-zA-Z]{2,}))/i", array(get_class($this), '_Linktext'), $content );
134	}
135	return $content;
136	}
137
138	function _linktext($Match)
139	{
140	global $cryptX_var;
141	switch ($cryptX_var[opt_linktext]) {
142
143	case 1: // alternative text for mail link
144	$linktext = $cryptX_var[alt_linktext];
145	break;
146
147	case 2: // alternative image for mail link
148	$linktext = "<img src=\"" . $cryptX_var[alt_linkimage] . "\" class=\"cryptxImage\" alt=\"" . $cryptX_var[alt_linkimage_title] . "\" title=\"" . $cryptX_var[alt_linkimage_title] . "\">";
149	break;
150
151	case 3: // uploaded image for mail link
152	$imgurl = "/" . PLUGINDIR . "/" . dirname(plugin_basename (__FILE__)) . "/images/" . $cryptX_var[alt_uploadedimage];
153	$linktext = "<img src=\"" . $imgurl . "\" class=\"cryptxImage\" alt=\"" . $cryptX_var[http_linkimage_title] . "\" title=\"" . $cryptX_var[http_linkimage_title] . "\">";
154	break;
155
156	case 4: // text scrambled by antispambot
157	$linktext = antispambot($Match[1]);
158	break;
159
160	default:
161	$linktext = str_replace( "@", $cryptX_var[at], $Match[1]);
162	$linktext = str_replace( ".", $cryptX_var[dot], $linktext);
163
164	}
165	return $linktext;
166	}
167
168	// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
169
170	function _dirImages()
171	{
172	$dir = $_SERVER["DOCUMENT_ROOT"].'/'.PLUGINDIR.'/'.dirname(plugin_basename (__FILE__)).'/images';
173	echo "<!-- cryptximgdir: $dir -->";
174	$fh = opendir($dir); //Verzeichnis
175	$verzeichnisinhalt = array();
176	while (true == ($file = readdir($fh)))
177	{
178	echo "<!-- BILD: $file -->";
179	if ((substr(strtolower($file), -3)=="jpg") or (substr(strtolower($file), -3)=="gif"))
180	{
181	$verzeichnisinhalt[] = $file;
182	}
183	}
184	return $verzeichnisinhalt;
185	}
186
187	// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
188
189	function encryptx($content)
190	{
191	global $post;
192	$cryptxoff = false;
193	$cryptxoffmeta = get_post_meta($post->ID,'cryptxoff',true);
194	if ($cryptxoffmeta == "true") {
195	$cryptxoff = true;
196	}
197	if ($cryptxoff == false) {
198	$content = preg_replace_callback('/<a (.?)(href=("\|\')mailto:(.?)("\|\')(.?)\|)>(.?)<\/a>/i', array(get_class($this), 'mailtocrypt'), $content );
199	}
200	return $content;
201	}
202
203	function mailtocrypt($Match)
204	{
205	global $cryptX_var;
206	$return = $Match[0];
207	$mailto = "mailto:" . $Match[4];
208	if (@$cryptX_var[java]) {
209	$crypt = '';
210	$ascii = 0;
211	for ($i = 0; $i < strlen( $Match[4] ); $i++) {
212	$ascii = ord ( substr ( $Match[4], $i ) );
213	if (8364 <= $char) {
214	$ascii = 128;
215	}
216	$crypt .= chr($ascii + 1);
217	}
218	$javascript="javascript:DeCryptX('" . $crypt . "')";
219	$return = str_replace( "mailto:".$Match[4], $javascript, $return);
220	} else {
221	$return = str_replace( $mailto, antispambot($mailto), $return);
222	}
223	return $return;
224	}
225
226
227	// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
228
229	function autolink($content) {
230
231	$src[]="/([\s])([_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)(\.[a-zA-Z]{2,}))/si";
232	$src[]="/(>)([_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)(\.[a-zA-Z]{2,}))(<)/si";
233	$src[]="/^([_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)(\.[a-zA-Z]{2,}))/si";
234	$src[]="/(<a[^>]>)<a[^>]>/";
235	$src[]="/(<\/A>)<\/A>/i";
236
237	$tar[]="\\1<a href=\"mailto:\\2\">\\2</a>";
238	$tar[]="\\1<a href=\"mailto:\\2\">\\2</a>\\6";
239	$tar[]="<a href=\"mailto:\\0\">\\0</a>";
240	$tar[]="\\1";
241	$tar[]="\\1";
242
243	$content = preg_replace($src,$tar,$content);
244
245	return $content;
246	}
247
248	// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
249
250
251	function install() {
252	add_option(
253	'cryptX',
254	array(
255	'at' => ' [at] ',
256	'dot' => ' [dot] ',
257	'theContent' => 1,
258	'theExcerpt' => 0,
259	'commentText' => 1,
260	'java' => 1,
261	'opt_linktext' => 0,
262	)
263	);
264	}
265
266	// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
267
268	/**
269	* Attach the menu page to the `Options` tab
270	*/
271	function header()
272	{
273	$cryptX_script.= "<script type=\"text/javascript\" src=\"" . get_option('siteurl') . '/' . PLUGINDIR . '/' . dirname(plugin_basename (__FILE__)) . "/js/cryptx.js\"></script>\n";
274	print($cryptX_script);
275	}
276
277	// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
278
279
280	function cryptx_meta() {
281	global $post;
282	$cryptxoff = false;
283	$cryptxoffmeta = get_post_meta($post->ID,'cryptxoff',true);
284	if ($cryptxoffmeta == "true") {
285	$cryptxoff = true;
286	}
287	?>
288	<input type="checkbox" name="cryptxoff" <?php if ($cryptxoff) { echo 'checked="checked"'; } ?>/> Disable CryptX
289	<?php
290	}
291
292	function cryptx_option() {
293	global $post;
294	$cryptxoff = false;
295	$cryptxoffmeta = get_post_meta($post->ID,'cryptxoff',true);
296	if ($cryptxoffmeta == "true") {
297	$cryptxoff = true;
298	}
299	if ( current_user_can('edit_posts') ) { ?>
300	<fieldset id="cryptxoption" class="dbx-box">
301	<h3 class="dbx-handle">CryptX</h3>
302	<div class="dbx-content">
303	<input type="checkbox" name="cryptxon" <?php if ($cryptxoff) { echo 'checked="checked"'; } ?>/> CryptX disabled?
304	</div>
305	</fieldset>
306	<?php
307	}
308	}
309
310	function cryptx_meta_box() {
311	// Check whether the 2.5 function add_meta_box exists, and if it doesn't use 2.3 functions.
312	if ( function_exists('add_meta_box') ) {
313	add_meta_box('cryptx','CryptX', array(&$this, 'cryptx_meta'),'post');
314	add_meta_box('cryptx','CryptX', array(&$this, 'cryptx_meta'),'page');
315	} else {
316	add_action('dbx_post_sidebar', array(&$this, 'cryptx_option'));
317	add_action('dbx_page_sidebar', array(&$this, 'cryptx_option'));
318	}
319	}
320
321	//add_action('admin_menu', 'cryptx_meta_box');
322
323	function cryptx_insert_post($pID) {
324	if (isset($_POST['cryptxoff'])) {
325	add_post_meta($pID,'cryptxoff',"true", true) or update_post_meta($pID, 'cryptxoff', "true");
326	} else {
327	add_post_meta($pID,'cryptxoff',"false", true) or update_post_meta($pID, 'cryptxoff', "false");
328	}
329	}
330	//add_action('wp_insert_post', array(&$this, 'cryptx_insert_post'));
331
332
333
334
335	/**
336	* Attach the menu page to the `Options` tab
337	*/
338	function menu() {
339	add_options_page(
340	'CryptX',
341	(version_compare($GLOBALS['wp_version'], '2.6.999', '>') ? '<img src="' .@plugins_url('cryptx/icon.png'). '" width="10" height="10" alt="CryptX Icon" />' : ''). 'CryptX',
342	9,
343	__FILE__,
344	array(
345	$this,
346	'_submenu'
347	)
348	);
349	}
350
351	/**
352	* Handles and renders the menu page
353	*/
354	function _submenu() {
355	global $cryptX_var;
356
357	if (isset($_POST) && !empty($_POST)) {
358	if (function_exists('current_user_can') === true && (current_user_can('manage_options') === false \|\| current_user_can('edit_plugins') === false)) {
359	wp_die("You don't have permission to access!");
360	}
361	check_admin_referer('cryptX');
362	update_option( 'cryptX', $_POST['cryptX_var']);
363	$cryptX_var = (array) get_option('cryptX'); // reread Options
364	?>
365	<div id="message" class="updated fade">
366	<p><strong><?php _e('Settings saved.') ?></strong></p>
367	</div>
368	<?php } ?>
369
370	<div class="wrap">
371	<?php if (version_compare($GLOBALS['wp_version'], '2.6.999', '>')) { ?>
372	<div class="icon32" style="background: url(<?php echo @plugins_url('cryptx/icon32.png') ?>) no-repeat"><br /></div>
373	<?php } ?>
374	<h2>CryptX</h2>
375
376	<form method="post" action="">
377
378	<?php wp_nonce_field('cryptX') ?>
379
380	<div id="poststuff" class="ui-sortable">
381	<div id="wp_seo_about_wpseo" class="postbox">
382
383	<h3><?php _e("Presentation",'cryptx'); ?></h3>
384
385	<div class="inside">
386	<table class="form-table">
387	<tr valign="top">
388	<td><input name="cryptX_var[opt_linktext]" type="radio" id="opt_linktext" value="0" <?php echo ($cryptX_var[opt_linktext] == 0) ? 'checked="checked"' : ''; ?> /></td>
389	<th scope="row"><label for="cryptX_var[at]"><?php _e("Replacement for '@'",'cryptx'); ?></label></th>
390	<td><input name="cryptX_var[at]" value="<?php echo $cryptX_var[at]; ?>" type="text" class="regular-text" /></td>
391	</tr>
392	<tr valign="top">
393	<td> </td>
394	<th scope="row"><label for="cryptX_var[dot]"><?php _e("Replacement for '.'",'cryptx'); ?></label></th>
395	<td><input name="cryptX_var[dot]" value="<?php echo $cryptX_var[dot]; ?>" type="text" class="regular-text" /></td>
396	</tr>
397	<tr valign="top">
398	<td scope="row"><input type="radio" name="cryptX_var[opt_linktext]" id="opt_linktext2" value="1" <?php echo ($cryptX_var[opt_linktext] == 1) ? 'checked="checked"' : ''; ?>/></td>
399	<th><label for="cryptX_var[alt_linktext]"><?php _e("Text for link",'cryptx'); ?></label></th>
400	<td><input name="cryptX_var[alt_linktext]" value="<?php echo $cryptX_var[alt_linktext]; ?>" type="text" class="regular-text" /></td>
401	</tr>
402	<tr valign="top">
403	<td scope="row"><input type="radio" name="cryptX_var[opt_linktext]" id="opt_linktext3" value="2" <?php echo ($cryptX_var[opt_linktext] == 2) ? 'checked="checked"' : ''; ?>/></td>
404	<th><label for="cryptX_var[alt_linkimage]"><?php _e("Image-URL",'cryptx'); ?></label></th>
405	<td><input name="cryptX_var[alt_linkimage]" value="<?php echo $cryptX_var[alt_linkimage]; ?>" type="text" class="regular-text" /></td>
406	</tr>
407	<tr valign="top">
408	<td scope="row"> </td>
409	<th><label for="cryptX_var[http_linkimage_title]"><?php _e("Title-Tag for the Image",'cryptx'); ?></label></th>
410	<td><input name="cryptX_var[http_linkimage_title]" value="<?php echo $cryptX_var[http_linkimage_title]; ?>" type="text" class="regular-text" /></td>
411	</tr>
412	<tr valign="top">
413	<td scope="row"><input type="radio" name="cryptX_var[opt_linktext]" id="opt_linktext4" value="3" <?php echo ($cryptX_var[opt_linktext] == 3) ? 'checked="checked"' : ''; ?>/></td>
414	<th><label for="cryptX_var[alt_uploadedimage]"><?php _e("Select image from folder",'cryptx'); ?></label></th>
415	<td><select name="cryptX_var[alt_uploadedimage]" onchange="cryptX_bild_wechsel(this)">
416	<?php foreach($this->_dirImages() as $image) {
417	$FirstIMG = (!isset($FirstIMG))? plugins_url('cryptx/images/').$image : ($cryptX_var[alt_uploadedimage] == plugins_url('cryptx/images/').$image) ? plugins_url('cryptx/images/').$image : $FirstIMG;
418	?>
419	<option value="<?php echo plugins_url('cryptx/images/').$image; ?>" <?php echo ($cryptX_var[alt_uploadedimage] == plugins_url('cryptx/images/').$image) ? 'selected' : ''; ?> ><?php echo $image; ?></option>
420	<?php } ?>
421	</select>  <img src="<?php echo $FirstIMG; ?>" id="cryptXmailTo"></td>
422	</tr>
423	<tr valign="top">
424	<td> </td>
425	<th><label for="cryptX_var[alt_linkimage_title]"><?php _e("Title-Tag for the Image",'cryptx'); ?></label></th>
426	<td><input name="cryptX_var[alt_linkimage_title]" value="<?php echo $cryptX_var[alt_linkimage_title]; ?>" type="text" class="regular-text" />
427	<span class="setting-description"><?php _e("Upload your favorite email-image to ../plugins/cryptx/images. Only .jpg and .gif Supported!",'cryptx'); ?></span></td>
428	</tr>
429	<tr valign="top">
430	<td scope="row"><input type="radio" name="cryptX_var[opt_linktext]" id="opt_linktext" value="4" <?php echo ($cryptX_var[opt_linktext] == 4) ? 'checked="checked"' : ''; ?>/></td>
431	<th colspan="2"><?php _e("Text scrambled by AntiSpamBot (<small>Try it and look at your site and check the html source!</small>)",'cryptx'); ?></th>
432	</tr>
433	</table>
434	</div>
435	</div>
436
437	<div id="wp_seo_about_wpseo" class="postbox">
438
439	<h3><?php _e("General",'cryptx'); ?></h3>
440
441	<div class="inside">
442	<table class="form-table">
443	<tr valign="top">
444	<th scope="row"><?php _e("Apply CryptX to...",'cryptx'); ?></th>
445	<td><input name="cryptX_var[theContent]" <?php echo ($cryptX_var[theContent]) ? 'checked="checked"' : ''; ?> type="checkbox" />  <?php _e("Content",'cryptx'); ?><br/>
446	<input name="cryptX_var[theExcerpt]" <?php echo ($cryptX_var[theExcerpt]) ? 'checked="checked"' : ''; ?> type="checkbox" />  <?php _e("Excerpt",'cryptx'); ?><br/>
447	<input name="cryptX_var[commentText]" <?php echo ($cryptX_var[commentText]) ? 'checked="checked"' : ''; ?> type="checkbox" />  <?php _e("Comments",'cryptx'); ?></td>
448	</tr>
449	<tr valign="top">
450	<th scope="row"><?php _e("Type of decryption",'cryptx'); ?></th>
451	<td><input name="cryptX_var[java]" <?php echo ($cryptX_var[java]) ? 'checked="checked"' : ''; ?> type="radio" value="1" />  <?php _e("Use javascript to hide the Email-Link.",'cryptx'); ?><br/>
452	<input name="cryptX_var[java]" <?php echo (!$cryptX_var[java]) ? 'checked="checked"' : ''; ?> type="radio" value="0" />  <?php _e("Use Unicode to hide the Email-Link.",'cryptx'); ?></td>
453	</tr>
454	<tr valign="top">
455	<th scope="row" colspan="2"><input name="cryptX_var[autolink]" <?php echo ($cryptX_var[autolink]) ? 'checked="checked"' : ''; ?> type="checkbox" />  <?php _e("Add mailto to all unlinked email addresses",'cryptx'); ?></th>
456	</tr>
457	</table>
458
459	</div>
460	</div>
461	<p><input type="submit" name="cryptX" class="button-primary" value="<?php _e('Save Changes') ?>" /></p>
462	</div>
463
464	</form>
465
466	<script type="text/javascript">
467	<!--
468	function cryptX_bild_wechsel(select){
469	document.getElementById("cryptXmailTo").src = select.options[select.options.selectedIndex].value;
470	return true;
471	} //-->
472	</script>
473
474	</div>
475	<?php
476	}
477
478	// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
479
480
481	//--end-of-class
482	}
483
484	}
485
486	/////////////////////////////////////////////////////////////////////////////
487
488	/**
489	* Initiating the plugin...
490	* @see cryptX
491	*/
492	new cryptX;
493
494	/**
495	* Create Template functions...
496	* $content = string to convert
497	* $text = string to replace linktext
498	* $css = assign a css class to the link
499	* $echo = 0: keep result in a variable, 1: show result
500	*/
501	function cryptx( $content, $text="", $css="", $echo=1 )
502	{
503	global $cryptX_var;
504
505	$cryptX = new cryptX;
506
507	$content = $cryptX->autolink( $content );
508
509	$content = $cryptX->encryptx( $content );
510
511	if("" != $text) {
512	$content = preg_replace( "/(<a[^>]>)(.)(<\/a>)/i", '$1'.$text.'$3', $content );
513	}
514	if("" != $css) {
515	$content = preg_replace( "/(<a[^>]*)(>)/i", '$1 class="'.$css.'"$2', $content );
516	}
517	if(1 == $echo) echo $content;
518
519	return $content;
520	}
521	?>