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-rw-r--r--addons/copyable_captcha.php104
1 files changed, 104 insertions, 0 deletions
diff --git a/addons/copyable_captcha.php b/addons/copyable_captcha.php
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+++ b/addons/copyable_captcha.php
@@ -0,0 +1,104 @@
+<?php
+
+/**
+ * Copyable Captha plugin
+ * Copyright (C) 2016 artoodetoo
+ * Special thanks to Visman for his help
+ * License: http://www.gnu.org/licenses/gpl.html GPL version 2 or higher
+ */
+
+class addon_copyable_captcha extends flux_addon
+{
+ var $lang;
+ var $styles;
+ var $spans;
+
+ function register($manager)
+ {
+ global $pun_user;
+
+ if (!$pun_user['is_guest']) return;
+
+ $manager->bind('register_after_validation', array($this, 'hook_register_after_validation'));
+ $manager->bind('register_before_header', array($this, 'hook_register_before_header'));
+ $manager->bind('register_before_submit', array($this, 'hook_register_before_submit'));
+ }
+
+ function load_lang()
+ {
+ global $pun_user;
+
+ if (isset($this->lang)) return;
+
+ $user_lang = file_exists(PUN_ROOT.'lang/'.$pun_user['language'].'/copyable_captcha.php')
+ ? $pun_user['language']
+ : 'English';
+ require PUN_ROOT.'lang/'.$user_lang.'/copyable_captcha.php';
+
+ $this->lang = $lang_copyable_captcha;
+ }
+
+ function hook_register_after_validation()
+ {
+ global $errors, $cookie_name, $cookie_seed;
+
+ if (isset($_POST['req_word']) && isset($_COOKIE[$cookie_name.'_captcha']) && substr_count($_COOKIE[$cookie_name.'_captcha'], '-') === 1) {
+ list($hash, $time) = explode('-', $_COOKIE[$cookie_name.'_captcha']);
+ $word = $_POST['req_word'];
+ if ((int)$time <= time() - 120 || $hash !== sha1(strtolower($word).$cookie_seed.'secret'.$time)) {
+ $this->load_lang();
+ $errors[] = $this->lang['Captcha error'];
+ }
+ } else {
+ $this->load_lang();
+ $errors[] = $this->lang['Captcha error'];
+ }
+ }
+
+
+ function hook_register_before_header()
+ {
+ global $required_fields, $errors, $cookie_name, $cookie_seed;
+
+ $this->load_lang();
+ $required_fields['req_word'] = $this->lang['Captcha'];
+
+ $time = time();
+ $word = random_pass(mt_rand(4, 6));
+ $hash = sha1(strtolower($word).$cookie_seed.'secret'.$time);
+ forum_setcookie($cookie_name.'_captcha', $hash.'-'.$time, $time + 120);
+
+ $array = str_split($word);
+ $mixin = random_pass(mt_rand(1, 3));
+ $i = -1;
+ $this->styles = '';
+ foreach (str_split($mixin) as $ch) {
+ $i = mt_rand($i+1, count($array));
+ array_splice($array, $i, 0, $ch);
+ $this->styles .= '.masq i:nth-child('.($i + 1).'){display:none;} ';
+ }
+ $this->spans = '<i>'.implode('</i><i>', $array).'</i>';
+ }
+
+
+ function hook_register_before_submit()
+ {
+ global $lang_common;
+
+ $this->load_lang();
+
+?>
+ <div class="inform">
+ <fieldset>
+ <legend><?php echo $this->lang['Captcha legend'] ?></legend>
+ <div class="infldset">
+ <style> .masq i {font-style:normal;} <?php echo $this->styles ?></style>
+ <p><?php echo sprintf($this->lang['Captcha info'], $this->spans) ?></p>
+ <label class="required"><strong><?php echo $this->lang['Captcha'] ?> <span><?php echo $lang_common['Required'] ?></span></strong><br /><input type="text" name="req_word" size="25" maxlength="25" /><br /></label>
+ </div>
+ </fieldset>
+ </div>
+<?php
+
+ }
+}