1: <?php
2:
3: 4: 5: 6: 7: 8: 9: 10: 11:
12:
13:
14:
15: 16: 17: 18: 19: 20: 21: 22: 23:
24: final class HttpResponse extends Object implements IHttpResponse
25: {
26:
27: private static $fixIE = TRUE;
28:
29:
30: public $cookieDomain = '';
31:
32:
33: public $cookiePath = '/';
34:
35:
36: public $cookieSecure = FALSE;
37:
38:
39: public $cookieHttpOnly = TRUE;
40:
41:
42: private $code = self::S200_OK;
43:
44:
45:
46: 47: 48: 49: 50: 51: 52:
53: public function setCode($code)
54: {
55: $code = (int) $code;
56:
57: static $allowed = array(
58: 200=>1, 201=>1, 202=>1, 203=>1, 204=>1, 205=>1, 206=>1,
59: 300=>1, 301=>1, 302=>1, 303=>1, 304=>1, 307=>1,
60: 400=>1, 401=>1, 403=>1, 404=>1, 406=>1, 408=>1, 410=>1, 412=>1, 415=>1, 416=>1,
61: 500=>1, 501=>1, 503=>1, 505=>1
62: );
63:
64: if (!isset($allowed[$code])) {
65: throw new InvalidArgumentException("Bad HTTP response '$code'.");
66:
67: } elseif (headers_sent($file, $line)) {
68: throw new InvalidStateException("Cannot set HTTP code after HTTP headers have been sent" . ($file ? " (output started at $file:$line)." : "."));
69:
70: } else {
71: $this->code = $code;
72: $protocol = isset($_SERVER['SERVER_PROTOCOL']) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.1';
73: header($protocol . ' ' . $code, TRUE, $code);
74: }
75: return $this;
76: }
77:
78:
79:
80: 81: 82: 83:
84: public function getCode()
85: {
86: return $this->code;
87: }
88:
89:
90:
91: 92: 93: 94: 95: 96: 97:
98: public function setHeader($name, $value)
99: {
100: if (headers_sent($file, $line)) {
101: throw new InvalidStateException("Cannot send header after HTTP headers have been sent" . ($file ? " (output started at $file:$line)." : "."));
102: }
103:
104: if ($value === NULL && function_exists('header_remove')) {
105: header_remove($name);
106: } else {
107: header($name . ': ' . $value, TRUE, $this->code);
108: }
109: return $this;
110: }
111:
112:
113:
114: 115: 116: 117: 118: 119: 120:
121: public function addHeader($name, $value)
122: {
123: if (headers_sent($file, $line)) {
124: throw new InvalidStateException("Cannot send header after HTTP headers have been sent" . ($file ? " (output started at $file:$line)." : "."));
125: }
126:
127: header($name . ': ' . $value, FALSE, $this->code);
128: }
129:
130:
131:
132: 133: 134: 135: 136: 137: 138:
139: public function setContentType($type, $charset = NULL)
140: {
141: $this->setHeader('Content-Type', $type . ($charset ? '; charset=' . $charset : ''));
142: return $this;
143: }
144:
145:
146:
147: 148: 149: 150: 151: 152: 153:
154: public function redirect($url, $code = self::S302_FOUND)
155: {
156: if (isset($_SERVER['SERVER_SOFTWARE']) && preg_match('#^Microsoft-IIS/[1-5]#', $_SERVER['SERVER_SOFTWARE'])
157: && $this->getHeader('Set-Cookie') !== NULL
158: ) {
159: $this->setHeader('Refresh', "0;url=$url");
160: return;
161: }
162:
163: $this->setCode($code);
164: $this->setHeader('Location', $url);
165: echo "<h1>Redirect</h1>\n\n<p><a href=\"" . htmlSpecialChars($url) . "\">Please click here to continue</a>.</p>";
166: }
167:
168:
169:
170: 171: 172: 173: 174: 175:
176: public function setExpiration($time)
177: {
178: if (!$time) { 179: $this->setHeader('Cache-Control', 's-maxage=0, max-age=0, must-revalidate');
180: $this->setHeader('Expires', 'Mon, 23 Jan 1978 10:00:00 GMT');
181: return $this;
182: }
183:
184: $time = DateTime53::from($time);
185: $this->setHeader('Cache-Control', 'max-age=' . ($time->format('U') - time()));
186: $this->setHeader('Expires', self::date($time));
187: return $this;
188: }
189:
190:
191:
192: 193: 194: 195:
196: public function isSent()
197: {
198: return headers_sent();
199: }
200:
201:
202:
203: 204: 205: 206: 207: 208:
209: public function getHeader($header, $default = NULL)
210: {
211: $header .= ':';
212: $len = strlen($header);
213: foreach (headers_list() as $item) {
214: if (strncasecmp($item, $header, $len) === 0) {
215: return ltrim(substr($item, $len));
216: }
217: }
218: return $default;
219: }
220:
221:
222:
223: 224: 225: 226:
227: public function getHeaders()
228: {
229: $headers = array();
230: foreach (headers_list() as $header) {
231: $a = strpos($header, ':');
232: $headers[substr($header, 0, $a)] = (string) substr($header, $a + 2);
233: }
234: return $headers;
235: }
236:
237:
238:
239: 240: 241: 242: 243:
244: public static function date($time = NULL)
245: {
246: $time = DateTime53::from($time);
247: $time->setTimezone(new DateTimeZone('GMT'));
248: return $time->format('D, d M Y H:i:s \G\M\T');
249: }
250:
251:
252:
253: 254: 255:
256: public function __destruct()
257: {
258: if (self::$fixIE && isset($_SERVER['HTTP_USER_AGENT']) && strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE ') !== FALSE
259: && in_array($this->code, array(400, 403, 404, 405, 406, 408, 409, 410, 500, 501, 505), TRUE)
260: && $this->getHeader('Content-Type', 'text/html') === 'text/html'
261: ) {
262: echo String::random(2e3, " \t\r\n"); 263: self::$fixIE = FALSE;
264: }
265: }
266:
267:
268:
269: 270: 271: 272: 273: 274: 275: 276: 277: 278: 279: 280:
281: public function setCookie($name, $value, $time, $path = NULL, $domain = NULL, $secure = NULL, $httpOnly = NULL)
282: {
283: if (headers_sent($file, $line)) {
284: throw new InvalidStateException("Cannot set cookie after HTTP headers have been sent" . ($file ? " (output started at $file:$line)." : "."));
285: }
286:
287: setcookie(
288: $name,
289: $value,
290: $time ? DateTime53::from($time)->format('U') : 0,
291: $path === NULL ? $this->cookiePath : (string) $path,
292: $domain === NULL ? $this->cookieDomain : (string) $domain,
293: $secure === NULL ? $this->cookieSecure : (bool) $secure,
294: $httpOnly === NULL ? $this->cookieHttpOnly : (bool) $httpOnly
295: );
296: return $this;
297: }
298:
299:
300:
301: 302: 303: 304: 305: 306: 307: 308: 309:
310: public function deleteCookie($name, $path = NULL, $domain = NULL, $secure = NULL)
311: {
312: if (headers_sent($file, $line)) {
313: throw new InvalidStateException("Cannot delete cookie after HTTP headers have been sent" . ($file ? " (output started at $file:$line)." : "."));
314: }
315:
316: setcookie(
317: $name,
318: FALSE,
319: 254400000,
320: $path === NULL ? $this->cookiePath : (string) $path,
321: $domain === NULL ? $this->cookieDomain : (string) $domain,
322: $secure === NULL ? $this->cookieSecure : (bool) $secure,
323: TRUE 324: );
325: }
326:
327: }
328: