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1 | <?php | |
2 | /** | |
3 | * wallabag, self hostable application allowing you to not miss any content anymore | |
4 | * | |
5 | * @category wallabag | |
6 | * @author Nicolas LÅ“uillet <nicolas@loeuillet.org> | |
7 | * @copyright 2013 | |
8 | * @license http://www.wtfpl.net/ see COPYING file | |
9 | */ | |
10 | ||
11 | class Tools | |
12 | { | |
13 | public static function initPhp() | |
14 | { | |
15 | define('START_TIME', microtime(true)); | |
16 | ||
17 | if (phpversion() < 5) { | |
18 | die(_('Oops, it seems you don\'t have PHP 5.')); | |
19 | } | |
20 | ||
21 | function stripslashesDeep($value) { | |
22 | return is_array($value) | |
23 | ? array_map('stripslashesDeep', $value) | |
24 | : stripslashes($value); | |
25 | } | |
26 | ||
27 | if (get_magic_quotes_gpc()) { | |
28 | $_POST = array_map('stripslashesDeep', $_POST); | |
29 | $_GET = array_map('stripslashesDeep', $_GET); | |
30 | $_COOKIE = array_map('stripslashesDeep', $_COOKIE); | |
31 | } | |
32 | ||
33 | ob_start(); | |
34 | register_shutdown_function('ob_end_flush'); | |
35 | } | |
36 | ||
37 | public static function getPocheUrl() | |
38 | { | |
39 | $https = (!empty($_SERVER['HTTPS']) | |
40 | && (strtolower($_SERVER['HTTPS']) == 'on')) | |
41 | || (isset($_SERVER["SERVER_PORT"]) | |
42 | && $_SERVER["SERVER_PORT"] == '443') // HTTPS detection. | |
43 | || (isset($_SERVER["SERVER_PORT"]) //Custom HTTPS port detection | |
44 | && $_SERVER["SERVER_PORT"] == SSL_PORT) | |
45 | || (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) | |
46 | && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https'); | |
47 | ||
48 | $serverport = (!isset($_SERVER["SERVER_PORT"]) | |
49 | || $_SERVER["SERVER_PORT"] == '80' | |
50 | || ($https && $_SERVER["SERVER_PORT"] == '443') | |
51 | || ($https && $_SERVER["SERVER_PORT"]==SSL_PORT) //Custom HTTPS port detection | |
52 | ? '' : ':' . $_SERVER["SERVER_PORT"]); | |
53 | ||
54 | $scriptname = str_replace('/index.php', '/', $_SERVER["SCRIPT_NAME"]); | |
55 | ||
56 | if (!isset($_SERVER["HTTP_HOST"])) { | |
57 | return $scriptname; | |
58 | } | |
59 | ||
60 | $host = (isset($_SERVER['HTTP_X_FORWARDED_HOST']) ? $_SERVER['HTTP_X_FORWARDED_HOST'] : (isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : $_SERVER['SERVER_NAME'])); | |
61 | ||
62 | if (strpos($host, ':') !== false) { | |
63 | $serverport = ''; | |
64 | } | |
65 | ||
66 | return 'http' . ($https ? 's' : '') . '://' | |
67 | . $host . $serverport . $scriptname; | |
68 | } | |
69 | ||
70 | public static function redirect($url = '') | |
71 | { | |
72 | if ($url === '') { | |
73 | $url = (empty($_SERVER['HTTP_REFERER'])?'?':$_SERVER['HTTP_REFERER']); | |
74 | if (isset($_POST['returnurl'])) { | |
75 | $url = $_POST['returnurl']; | |
76 | } | |
77 | } | |
78 | ||
79 | # prevent loop | |
80 | if (empty($url) || parse_url($url, PHP_URL_QUERY) === $_SERVER['QUERY_STRING']) { | |
81 | $url = Tools::getPocheUrl(); | |
82 | } | |
83 | ||
84 | if (substr($url, 0, 1) !== '?') { | |
85 | $ref = Tools::getPocheUrl(); | |
86 | if (substr($url, 0, strlen($ref)) !== $ref) { | |
87 | $url = $ref; | |
88 | } | |
89 | } | |
90 | self::logm('redirect to ' . $url); | |
91 | header('Location: '.$url); | |
92 | exit(); | |
93 | } | |
94 | ||
95 | public static function getTplFile($view) | |
96 | { | |
97 | $views = array( | |
98 | 'install', 'import', 'export', 'config', 'tags', | |
99 | 'edit-tags', 'view', 'login', 'error' | |
100 | ); | |
101 | ||
102 | if (in_array($view, $views)) { | |
103 | return $view . '.twig'; | |
104 | } | |
105 | ||
106 | return 'home.twig'; | |
107 | } | |
108 | ||
109 | public static function getFile($url) | |
110 | { | |
111 | $timeout = 15; | |
112 | $useragent = "Mozilla/5.0 (Windows NT 5.1; rv:18.0) Gecko/20100101 Firefox/18.0"; | |
113 | ||
114 | if (in_array ('curl', get_loaded_extensions())) { | |
115 | # Fetch feed from URL | |
116 | $curl = curl_init(); | |
117 | curl_setopt($curl, CURLOPT_URL, $url); | |
118 | curl_setopt($curl, CURLOPT_TIMEOUT, $timeout); | |
119 | if (!ini_get('open_basedir') && !ini_get('safe_mode')) { | |
120 | curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); | |
121 | } | |
122 | curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); | |
123 | curl_setopt($curl, CURLOPT_HEADER, false); | |
124 | ||
125 | # for ssl, do not verified certificate | |
126 | curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE); | |
127 | curl_setopt($curl, CURLOPT_AUTOREFERER, TRUE ); | |
128 | ||
129 | # FeedBurner requires a proper USER-AGENT... | |
130 | curl_setopt($curl, CURL_HTTP_VERSION_1_1, true); | |
131 | curl_setopt($curl, CURLOPT_ENCODING, "gzip, deflate"); | |
132 | curl_setopt($curl, CURLOPT_USERAGENT, $useragent); | |
133 | ||
134 | $data = curl_exec($curl); | |
135 | $httpcode = curl_getinfo($curl, CURLINFO_HTTP_CODE); | |
136 | $httpcodeOK = isset($httpcode) and ($httpcode == 200 or $httpcode == 301); | |
137 | curl_close($curl); | |
138 | } else { | |
139 | # create http context and add timeout and user-agent | |
140 | $context = stream_context_create( | |
141 | array( | |
142 | 'http' => array( | |
143 | 'timeout' => $timeout, | |
144 | 'header' => "User-Agent: " . $useragent, | |
145 | 'follow_location' => true | |
146 | ), | |
147 | 'ssl' => array( | |
148 | 'verify_peer' => false, | |
149 | 'allow_self_signed' => true | |
150 | ) | |
151 | ) | |
152 | ); | |
153 | ||
154 | # only download page lesser than 4MB | |
155 | $data = @file_get_contents($url, false, $context, -1, 4000000); | |
156 | ||
157 | if (isset($http_response_header) and isset($http_response_header[0])) { | |
158 | $httpcodeOK = isset($http_response_header) and isset($http_response_header[0]) and ((strpos($http_response_header[0], '200 OK') !== FALSE) or (strpos($http_response_header[0], '301 Moved Permanently') !== FALSE)); | |
159 | } | |
160 | } | |
161 | ||
162 | # if response is not empty and response is OK | |
163 | if (isset($data) and isset($httpcodeOK) and $httpcodeOK) { | |
164 | ||
165 | # take charset of page and get it | |
166 | preg_match('#<meta .*charset=.*>#Usi', $data, $meta); | |
167 | ||
168 | # if meta tag is found | |
169 | if (!empty($meta[0])) { | |
170 | preg_match('#charset="?(.*)"#si', $meta[0], $encoding); | |
171 | # if charset is found set it otherwise, set it to utf-8 | |
172 | $html_charset = (!empty($encoding[1])) ? strtolower($encoding[1]) : 'utf-8'; | |
173 | if (empty($encoding[1])) $encoding[1] = 'utf-8'; | |
174 | } else { | |
175 | $html_charset = 'utf-8'; | |
176 | $encoding[1] = ''; | |
177 | } | |
178 | ||
179 | # replace charset of url to charset of page | |
180 | $data = str_replace('charset=' . $encoding[1], 'charset=' . $html_charset, $data); | |
181 | ||
182 | return $data; | |
183 | } | |
184 | else { | |
185 | return FALSE; | |
186 | } | |
187 | } | |
188 | ||
189 | public static function renderJson($data) | |
190 | { | |
191 | header('Cache-Control: no-cache, must-revalidate'); | |
192 | header('Expires: Sat, 26 Jul 1997 05:00:00 GMT'); | |
193 | header('Content-type: application/json; charset=UTF-8'); | |
194 | echo json_encode($data); | |
195 | exit(); | |
196 | } | |
197 | ||
198 | public static function logm($message) | |
199 | { | |
200 | if (DEBUG_POCHE && php_sapi_name() != 'cli') { | |
201 | $t = strval(date('Y/m/d_H:i:s')) . ' - ' . $_SERVER["REMOTE_ADDR"] . ' - ' . strval($message) . "\n"; | |
202 | file_put_contents(CACHE . '/log.txt', $t, FILE_APPEND); | |
203 | error_log('DEBUG POCHE : ' . $message); | |
204 | } | |
205 | } | |
206 | ||
207 | public static function encodeString($string) | |
208 | { | |
209 | return sha1($string . SALT); | |
210 | } | |
211 | ||
212 | public static function checkVar($var, $default = '') | |
213 | { | |
214 | return ((isset ($_REQUEST["$var"])) ? htmlentities($_REQUEST["$var"]) : $default); | |
215 | } | |
216 | ||
217 | public static function getDomain($url) | |
218 | { | |
219 | return parse_url($url, PHP_URL_HOST); | |
220 | } | |
221 | ||
222 | public static function getReadingTime($text) { | |
223 | $word = str_word_count(strip_tags($text)); | |
224 | $minutes = floor($word / 200); | |
225 | $seconds = floor($word % 200 / (200 / 60)); | |
226 | $time = array('minutes' => $minutes, 'seconds' => $seconds); | |
227 | ||
228 | return $minutes; | |
229 | } | |
230 | ||
231 | public static function getDocLanguage($userlanguage) { | |
232 | $lang = explode('.', $userlanguage); | |
233 | return str_replace('_', '-', $lang[0]); | |
234 | } | |
235 | ||
236 | public static function status($status_code) | |
237 | { | |
238 | if (strpos(php_sapi_name(), 'apache') !== false) { | |
239 | ||
240 | header('HTTP/1.0 '.$status_code); | |
241 | } | |
242 | else { | |
243 | ||
244 | header('Status: '.$status_code); | |
245 | } | |
246 | } | |
247 | ||
248 | public static function download_db() { | |
249 | header('Content-Disposition: attachment; filename="poche.sqlite.gz"'); | |
250 | self::status(200); | |
251 | ||
252 | header('Content-Transfer-Encoding: binary'); | |
253 | header('Content-Type: application/octet-stream'); | |
254 | echo gzencode(file_get_contents(STORAGE_SQLITE)); | |
255 | ||
256 | exit; | |
257 | } | |
258 | ||
259 | public static function getPageContent(Url $url) | |
260 | { | |
261 | // Saving and clearing context | |
262 | $REAL = array(); | |
263 | foreach( $GLOBALS as $key => $value ) { | |
264 | if( $key != 'GLOBALS' && $key != '_SESSION' && $key != 'HTTP_SESSION_VARS' ) { | |
265 | $GLOBALS[$key] = array(); | |
266 | $REAL[$key] = $value; | |
267 | } | |
268 | } | |
269 | // Saving and clearing session | |
270 | if ( isset($_SESSION) ) { | |
271 | $REAL_SESSION = array(); | |
272 | foreach( $_SESSION as $key => $value ) { | |
273 | $REAL_SESSION[$key] = $value; | |
274 | unset($_SESSION[$key]); | |
275 | } | |
276 | } | |
277 | ||
278 | // Running code in different context | |
279 | $scope = function() { | |
280 | extract( func_get_arg(1) ); | |
281 | $_GET = $_REQUEST = array( | |
282 | "url" => $url->getUrl(), | |
283 | "max" => 5, | |
284 | "links" => "preserve", | |
285 | "exc" => "", | |
286 | "format" => "json", | |
287 | "submit" => "Create Feed" | |
288 | ); | |
289 | ob_start(); | |
290 | require func_get_arg(0); | |
291 | $json = ob_get_contents(); | |
292 | ob_end_clean(); | |
293 | return $json; | |
294 | }; | |
295 | $json = $scope( "inc/3rdparty/makefulltextfeed.php", array("url" => $url) ); | |
296 | ||
297 | // Clearing and restoring context | |
298 | foreach( $GLOBALS as $key => $value ) { | |
299 | if( $key != "GLOBALS" && $key != "_SESSION" ) { | |
300 | unset($GLOBALS[$key]); | |
301 | } | |
302 | } | |
303 | foreach( $REAL as $key => $value ) { | |
304 | $GLOBALS[$key] = $value; | |
305 | } | |
306 | // Clearing and restoring session | |
307 | if ( isset($REAL_SESSION) ) { | |
308 | foreach( $_SESSION as $key => $value ) { | |
309 | unset($_SESSION[$key]); | |
310 | } | |
311 | foreach( $REAL_SESSION as $key => $value ) { | |
312 | $_SESSION[$key] = $value; | |
313 | } | |
314 | } | |
315 | ||
316 | return json_decode($json, true); | |
317 | } | |
318 | ||
319 | /** | |
320 | * Returns whether we handle an AJAX (XMLHttpRequest) request. | |
321 | * @return boolean whether we handle an AJAX (XMLHttpRequest) request. | |
322 | */ | |
323 | public static function isAjaxRequest() | |
324 | { | |
325 | return isset($_SERVER['HTTP_X_REQUESTED_WITH']) && $_SERVER['HTTP_X_REQUESTED_WITH']==='XMLHttpRequest'; | |
326 | } | |
327 | ||
328 | } |