MDL-29081 add proxy support to googlespell
[moodle.git] / lib / editor / tinymce / tiny_mce / 3.4.5 / plugins / spellchecker / classes / GoogleSpell.php
1 <?php
2 /**
3  * $Id: editor_plugin_src.js 201 2007-02-12 15:56:56Z spocke $
4  *
5  * @package MCManager.includes
6  * @author Moxiecode
7  * @copyright Copyright � 2004-2007, Moxiecode Systems AB, All rights reserved.
8  */
10 class GoogleSpell extends SpellChecker {
11         /**
12          * Spellchecks an array of words.
13          *
14          * @param {String} $lang Language code like sv or en.
15          * @param {Array} $words Array of words to spellcheck.
16          * @return {Array} Array of misspelled words.
17          */
18         function &checkWords($lang, $words) {
19                 $wordstr = implode(' ', $words);
20                 $matches = $this->_getMatches($lang, $wordstr);
21                 $words = array();
23                 for ($i=0; $i<count($matches); $i++)
24                         $words[] = $this->_unhtmlentities(mb_substr($wordstr, $matches[$i][1], $matches[$i][2], "UTF-8"));
26                 return $words;
27         }
29         /**
30          * Returns suggestions of for a specific word.
31          *
32          * @param {String} $lang Language code like sv or en.
33          * @param {String} $word Specific word to get suggestions for.
34          * @return {Array} Array of suggestions for the specified word.
35          */
36         function &getSuggestions($lang, $word) {
37                 $sug = array();
38                 $osug = array();
39                 $matches = $this->_getMatches($lang, $word);
41                 if (count($matches) > 0)
42                         $sug = explode("\t", utf8_encode($this->_unhtmlentities($matches[0][4])));
44                 // Remove empty
45                 foreach ($sug as $item) {
46                         if ($item)
47                                 $osug[] = $item;
48                 }
50                 return $osug;
51         }
53         function &_getMatches($lang, $str) {
54                 $server = "www.google.com";
55                 $port = 443;
56                 $path = "/tbproxy/spell?lang=" . $lang . "&hl=en";
57                 $host = "www.google.com";
58                 $url = "https://" . $server;
60                 // Setup XML request
61                 $xml = '<?xml version="1.0" encoding="utf-8" ?><spellrequest textalreadyclipped="0" ignoredups="0" ignoredigits="1" ignoreallcaps="1"><text>' . $str . '</text></spellrequest>';
63                 $header  = "POST ".$path." HTTP/1.0 \r\n";
64                 $header .= "MIME-Version: 1.0 \r\n";
65                 $header .= "Content-type: application/PTI26 \r\n";
66                 $header .= "Content-length: ".strlen($xml)." \r\n";
67                 $header .= "Content-transfer-encoding: text \r\n";
68                 $header .= "Request-number: 1 \r\n";
69                 $header .= "Document-type: Request \r\n";
70                 $header .= "Interface-Version: Test 1.4 \r\n";
71                 $header .= "Connection: close \r\n\r\n";
72                 $header .= $xml;
74                 // Use curl if it exists
75                 if (function_exists('curl_init')) {
76                         // Use curl
77                         $ch = curl_init();
78                         curl_setopt($ch, CURLOPT_URL,$url);
79                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
80                         curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $header);
81                         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
82                         if (!empty($this->_config['GoogleSpell.proxyhost'])) {
83                                 if (!empty($this->_config['GoogleSpell.proxytype']) and ($this->_config['GoogleSpell.proxytype'] === 'SOCKS5')) {
84                     curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
85                                 } else {
86                     curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_HTML);
87                     curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, FALSE);
88                 }
89                                 if (empty($this->_config['GoogleSpell.proxyport'])) {
90                                         curl_setopt($ch, CURLOPT_PROXY, $this->_config['GoogleSpell.proxyhost']);
91                                 } else {
92                                         curl_setopt($ch, CURLOPT_PROXY, $this->_config['GoogleSpell.proxyhost'].':'.$this->_config['GoogleSpell.proxyport']);
93                                 }
94                                 if (!empty($this->_config['GoogleSpell.proxyuser']) and !empty($this->_config['GoogleSpell.proxypassword'])) {
95                                         curl_setopt($ch, CURLOPT_PROXYUSERPWD, $this->_config['GoogleSpell.proxyuser'].':'.$this->_config['GoogleSpell.proxypassword']);
96                                         if (defined('CURLOPT_PROXYAUTH')) {
97                                                 // any proxy authentication if PHP 5.1
98                                                 curl_setopt($ch, CURLOPT_PROXYAUTH, CURLAUTH_BASIC | CURLAUTH_NTLM);
99                                         }
100                                 }
101                         }
102                         $xml = curl_exec($ch);
103                         curl_close($ch);
104                 } else {
105                         // Use raw sockets
106                         $fp = fsockopen("ssl://" . $server, $port, $errno, $errstr, 30);
107                         if ($fp) {
108                                 // Send request
109                                 fwrite($fp, $header);
111                                 // Read response
112                                 $xml = "";
113                                 while (!feof($fp))
114                                         $xml .= fgets($fp, 128);
116                                 fclose($fp);
117                         } else
118                                 echo "Could not open SSL connection to google.";
119                 }
121                 // Grab and parse content
122                 $matches = array();
123                 preg_match_all('/<c o="([^"]*)" l="([^"]*)" s="([^"]*)">([^<]*)<\/c>/', $xml, $matches, PREG_SET_ORDER);
125                 return $matches;
126         }
128         function _unhtmlentities($string) {
129                 $string = preg_replace('~&#x([0-9a-f]+);~ei', 'chr(hexdec("\\1"))', $string);
130                 $string = preg_replace('~&#([0-9]+);~e', 'chr(\\1)', $string);
132                 $trans_tbl = get_html_translation_table(HTML_ENTITIES);
133                 $trans_tbl = array_flip($trans_tbl);
135                 return strtr($string, $trans_tbl);
136         }
139 // Patch in multibyte support
140 if (!function_exists('mb_substr')) {
141         function mb_substr($str, $start, $len = '', $encoding="UTF-8"){
142                 $limit = strlen($str);
144                 for ($s = 0; $start > 0;--$start) {// found the real start
145                         if ($s >= $limit)
146                                 break;
148                         if ($str[$s] <= "\x7F")
149                                 ++$s;
150                         else {
151                                 ++$s; // skip length
153                                 while ($str[$s] >= "\x80" && $str[$s] <= "\xBF")
154                                         ++$s;
155                         }
156                 }
158                 if ($len == '')
159                         return substr($str, $s);
160                 else
161                         for ($e = $s; $len > 0; --$len) {//found the real end
162                                 if ($e >= $limit)
163                                         break;
165                                 if ($str[$e] <= "\x7F")
166                                         ++$e;
167                                 else {
168                                         ++$e;//skip length
170                                         while ($str[$e] >= "\x80" && $str[$e] <= "\xBF" && $e < $limit)
171                                                 ++$e;
172                                 }
173                         }
175                 return substr($str, $s, $e - $s);
176         }
179 ?>