1: <?php
2:
3: 4: 5: 6: 7: 8: 9: 10:
11:
12: namespace Nette\Web;
13:
14: use Nette;
15:
16:
17:
18: 19: 20: 21: 22: 23: 24: 25: 26:
27: final class HttpResponse extends Nette\Object implements IHttpResponse
28: {
29:
30: private static $fixIE = TRUE;
31:
32:
33: public $cookieDomain = '';
34:
35:
36: public $cookiePath = '/';
37:
38:
39: public $cookieSecure = FALSE;
40:
41:
42: public $cookieHttpOnly = TRUE;
43:
44:
45: private $code = self::S200_OK;
46:
47:
48:
49: 50: 51: 52: 53: 54: 55:
56: public function setCode($code)
57: {
58: $code = (int) $code;
59:
60: static $allowed = array(
61: 200=>1, 201=>1, 202=>1, 203=>1, 204=>1, 205=>1, 206=>1,
62: 300=>1, 301=>1, 302=>1, 303=>1, 304=>1, 307=>1,
63: 400=>1, 401=>1, 403=>1, 404=>1, 406=>1, 408=>1, 410=>1, 412=>1, 415=>1, 416=>1,
64: 500=>1, 501=>1, 503=>1, 505=>1
65: );
66:
67: if (!isset($allowed[$code])) {
68: throw new \InvalidArgumentException("Bad HTTP response '$code'.");
69:
70: } elseif (headers_sent($file, $line)) {
71: throw new \InvalidStateException("Cannot set HTTP code after HTTP headers have been sent" . ($file ? " (output started at $file:$line)." : "."));
72:
73: } else {
74: $this->code = $code;
75: $protocol = isset($_SERVER['SERVER_PROTOCOL']) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.1';
76: header($protocol . ' ' . $code, TRUE, $code);
77: }
78: return $this;
79: }
80:
81:
82:
83: 84: 85: 86:
87: public function getCode()
88: {
89: return $this->code;
90: }
91:
92:
93:
94: 95: 96: 97: 98: 99: 100:
101: public function setHeader($name, $value)
102: {
103: if (headers_sent($file, $line)) {
104: throw new \InvalidStateException("Cannot send header after HTTP headers have been sent" . ($file ? " (output started at $file:$line)." : "."));
105: }
106:
107: if ($value === NULL && function_exists('header_remove')) {
108: header_remove($name);
109: } else {
110: header($name . ': ' . $value, TRUE, $this->code);
111: }
112: return $this;
113: }
114:
115:
116:
117: 118: 119: 120: 121: 122: 123:
124: public function addHeader($name, $value)
125: {
126: if (headers_sent($file, $line)) {
127: throw new \InvalidStateException("Cannot send header after HTTP headers have been sent" . ($file ? " (output started at $file:$line)." : "."));
128: }
129:
130: header($name . ': ' . $value, FALSE, $this->code);
131: }
132:
133:
134:
135: 136: 137: 138: 139: 140: 141:
142: public function setContentType($type, $charset = NULL)
143: {
144: $this->setHeader('Content-Type', $type . ($charset ? '; charset=' . $charset : ''));
145: return $this;
146: }
147:
148:
149:
150: 151: 152: 153: 154: 155: 156:
157: public function redirect($url, $code = self::S302_FOUND)
158: {
159: if (isset($_SERVER['SERVER_SOFTWARE']) && preg_match('#^Microsoft-IIS/[1-5]#', $_SERVER['SERVER_SOFTWARE']) && $this->getHeader('Set-Cookie') !== NULL) {
160: $this->setHeader('Refresh', "0;url=$url");
161: return;
162: }
163:
164: $this->setCode($code);
165: $this->setHeader('Location', $url);
166: echo "<h1>Redirect</h1>\n\n<p><a href=\"" . htmlSpecialChars($url) . "\">Please click here to continue</a>.</p>";
167: }
168:
169:
170:
171: 172: 173: 174: 175: 176:
177: public function setExpiration($time)
178: {
179: if (!$time) { 180: $this->setHeader('Cache-Control', 's-maxage=0, max-age=0, must-revalidate');
181: $this->setHeader('Expires', 'Mon, 23 Jan 1978 10:00:00 GMT');
182: return $this;
183: }
184:
185: $time = Nette\Tools::createDateTime($time);
186: $this->setHeader('Cache-Control', 'max-age=' . ($time->format('U') - time()));
187: $this->setHeader('Expires', self::date($time));
188: return $this;
189: }
190:
191:
192:
193: 194: 195: 196:
197: public function isSent()
198: {
199: return headers_sent();
200: }
201:
202:
203:
204: 205: 206: 207: 208: 209:
210: public function getHeader($header, $default = NULL)
211: {
212: $header .= ':';
213: $len = strlen($header);
214: foreach (headers_list() as $item) {
215: if (strncasecmp($item, $header, $len) === 0) {
216: return ltrim(substr($item, $len));
217: }
218: }
219: return $default;
220: }
221:
222:
223:
224: 225: 226: 227:
228: public function getHeaders()
229: {
230: $headers = array();
231: foreach (headers_list() as $header) {
232: $a = strpos($header, ':');
233: $headers[substr($header, 0, $a)] = (string) substr($header, $a + 2);
234: }
235: return $headers;
236: }
237:
238:
239:
240: 241: 242: 243: 244:
245: public static function date($time = NULL)
246: {
247: $time = Nette\Tools::createDateTime($time);
248: $time->setTimezone(new \DateTimeZone('GMT'));
249: return $time->format('D, d M Y H:i:s \G\M\T');
250: }
251:
252:
253:
254: 255: 256:
257: public function __destruct()
258: {
259: if (self::$fixIE) {
260: 261: if (!isset($_SERVER['HTTP_USER_AGENT']) || strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE ') === FALSE) return;
262: if (!in_array($this->code, array(400, 403, 404, 405, 406, 408, 409, 410, 500, 501, 505), TRUE)) return;
263: if ($this->getHeader('Content-Type', 'text/html') !== 'text/html') return;
264: $s = " \t\r\n";
265: for ($i = 2e3; $i; $i--) echo $s{rand(0, 3)};
266: self::$fixIE = FALSE;
267: }
268: }
269:
270:
271:
272: 273: 274: 275: 276: 277: 278: 279: 280: 281: 282: 283:
284: public function setCookie($name, $value, $time, $path = NULL, $domain = NULL, $secure = NULL, $httpOnly = NULL)
285: {
286: if (headers_sent($file, $line)) {
287: throw new \InvalidStateException("Cannot set cookie after HTTP headers have been sent" . ($file ? " (output started at $file:$line)." : "."));
288: }
289:
290: setcookie(
291: $name,
292: $value,
293: $time ? Nette\Tools::createDateTime($time)->format('U') : 0,
294: $path === NULL ? $this->cookiePath : (string) $path,
295: $domain === NULL ? $this->cookieDomain : (string) $domain,
296: $secure === NULL ? $this->cookieSecure : (bool) $secure,
297: $httpOnly === NULL ? $this->cookieHttpOnly : (bool) $httpOnly
298: );
299: return $this;
300: }
301:
302:
303:
304: 305: 306: 307: 308: 309: 310: 311: 312:
313: public function deleteCookie($name, $path = NULL, $domain = NULL, $secure = NULL)
314: {
315: if (headers_sent($file, $line)) {
316: throw new \InvalidStateException("Cannot delete cookie after HTTP headers have been sent" . ($file ? " (output started at $file:$line)." : "."));
317: }
318:
319: setcookie(
320: $name,
321: FALSE,
322: 254400000,
323: $path === NULL ? $this->cookiePath : (string) $path,
324: $domain === NULL ? $this->cookieDomain : (string) $domain,
325: $secure === NULL ? $this->cookieSecure : (bool) $secure,
326: TRUE 327: );
328: }
329:
330: }
331: