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pictcode / lib / Cake / Network / Http / HttpSocket.php @ 635eef61

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<?php
2
/**
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 * HTTP Socket connection class.
4
 *
5
 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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 * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
7
 *
8
 * Licensed under The MIT License
9
 * For full copyright and license information, please see the LICENSE.txt
10
 * Redistributions of files must retain the above copyright notice.
11
 *
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 * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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 * @link          http://cakephp.org CakePHP(tm) Project
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 * @package       Cake.Network.Http
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 * @since         CakePHP(tm) v 1.2.0
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 * @license       http://www.opensource.org/licenses/mit-license.php MIT License
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 */
18

    
19
App::uses('CakeSocket', 'Network');
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App::uses('Router', 'Routing');
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App::uses('Hash', 'Utility');
22

    
23
/**
24
 * CakePHP network socket connection class.
25
 *
26
 * Core base class for HTTP network communication. HttpSocket can be used as an
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 * Object Oriented replacement for cURL in many places.
28
 *
29
 * @package       Cake.Network.Http
30
 */
31
class HttpSocket extends CakeSocket {
32

    
33
/**
34
 * When one activates the $quirksMode by setting it to true, all checks meant to
35
 * enforce RFC 2616 (HTTP/1.1 specs).
36
 * will be disabled and additional measures to deal with non-standard responses will be enabled.
37
 *
38
 * @var bool
39
 */
40
        public $quirksMode = false;
41

    
42
/**
43
 * Contain information about the last request (read only)
44
 *
45
 * @var array
46
 */
47
        public $request = array(
48
                'method' => 'GET',
49
                'uri' => array(
50
                        'scheme' => 'http',
51
                        'host' => null,
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                        'port' => 80,
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                        'user' => null,
54
                        'pass' => null,
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                        'path' => null,
56
                        'query' => null,
57
                        'fragment' => null
58
                ),
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                'version' => '1.1',
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                'body' => '',
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                'line' => null,
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                'header' => array(
63
                        'Connection' => 'close',
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                        'User-Agent' => 'CakePHP'
65
                ),
66
                'raw' => null,
67
                'redirect' => false,
68
                'cookies' => array(),
69
        );
70

    
71
/**
72
 * Contain information about the last response (read only)
73
 *
74
 * @var array
75
 */
76
        public $response = null;
77

    
78
/**
79
 * Response class name
80
 *
81
 * @var string
82
 */
83
        public $responseClass = 'HttpSocketResponse';
84

    
85
/**
86
 * Configuration settings for the HttpSocket and the requests
87
 *
88
 * @var array
89
 */
90
        public $config = array(
91
                'persistent' => false,
92
                'host' => 'localhost',
93
                'protocol' => 'tcp',
94
                'port' => 80,
95
                'timeout' => 30,
96
                'ssl_verify_peer' => true,
97
                'ssl_allow_self_signed' => false,
98
                'ssl_verify_depth' => 5,
99
                'ssl_verify_host' => true,
100
                'request' => array(
101
                        'uri' => array(
102
                                'scheme' => array('http', 'https'),
103
                                'host' => 'localhost',
104
                                'port' => array(80, 443)
105
                        ),
106
                        'redirect' => false,
107
                        'cookies' => array(),
108
                )
109
        );
110

    
111
/**
112
 * Authentication settings
113
 *
114
 * @var array
115
 */
116
        protected $_auth = array();
117

    
118
/**
119
 * Proxy settings
120
 *
121
 * @var array
122
 */
123
        protected $_proxy = array();
124

    
125
/**
126
 * Resource to receive the content of request
127
 *
128
 * @var mixed
129
 */
130
        protected $_contentResource = null;
131

    
132
/**
133
 * Build an HTTP Socket using the specified configuration.
134
 *
135
 * You can use a URL string to set the URL and use default configurations for
136
 * all other options:
137
 *
138
 * `$http = new HttpSocket('http://cakephp.org/');`
139
 *
140
 * Or use an array to configure multiple options:
141
 *
142
 * ```
143
 * $http = new HttpSocket(array(
144
 *    'host' => 'cakephp.org',
145
 *    'timeout' => 20
146
 * ));
147
 * ```
148
 *
149
 * See HttpSocket::$config for options that can be used.
150
 *
151
 * @param string|array $config Configuration information, either a string URL or an array of options.
152
 */
153
        public function __construct($config = array()) {
154
                if (is_string($config)) {
155
                        $this->_configUri($config);
156
                } elseif (is_array($config)) {
157
                        if (isset($config['request']['uri']) && is_string($config['request']['uri'])) {
158
                                $this->_configUri($config['request']['uri']);
159
                                unset($config['request']['uri']);
160
                        }
161
                        $this->config = Hash::merge($this->config, $config);
162
                }
163
                parent::__construct($this->config);
164
        }
165

    
166
/**
167
 * Set authentication settings.
168
 *
169
 * Accepts two forms of parameters. If all you need is a username + password, as with
170
 * Basic authentication you can do the following:
171
 *
172
 * ```
173
 * $http->configAuth('Basic', 'mark', 'secret');
174
 * ```
175
 *
176
 * If you are using an authentication strategy that requires more inputs, like Digest authentication
177
 * you can call `configAuth()` with an array of user information.
178
 *
179
 * ```
180
 * $http->configAuth('Digest', array(
181
 *                'user' => 'mark',
182
 *                'pass' => 'secret',
183
 *                'realm' => 'my-realm',
184
 *                'nonce' => 1235
185
 * ));
186
 * ```
187
 *
188
 * To remove any set authentication strategy, call `configAuth()` with no parameters:
189
 *
190
 * `$http->configAuth();`
191
 *
192
 * @param string $method Authentication method (ie. Basic, Digest). If empty, disable authentication
193
 * @param string|array $user Username for authentication. Can be an array with settings to authentication class
194
 * @param string $pass Password for authentication
195
 * @return void
196
 */
197
        public function configAuth($method, $user = null, $pass = null) {
198
                if (empty($method)) {
199
                        $this->_auth = array();
200
                        return;
201
                }
202
                if (is_array($user)) {
203
                        $this->_auth = array($method => $user);
204
                        return;
205
                }
206
                $this->_auth = array($method => compact('user', 'pass'));
207
        }
208

    
209
/**
210
 * Set proxy settings
211
 *
212
 * @param string|array $host Proxy host. Can be an array with settings to authentication class
213
 * @param int $port Port. Default 3128.
214
 * @param string $method Proxy method (ie, Basic, Digest). If empty, disable proxy authentication
215
 * @param string $user Username if your proxy need authentication
216
 * @param string $pass Password to proxy authentication
217
 * @return void
218
 */
219
        public function configProxy($host, $port = 3128, $method = null, $user = null, $pass = null) {
220
                if (empty($host)) {
221
                        $this->_proxy = array();
222
                        return;
223
                }
224
                if (is_array($host)) {
225
                        $this->_proxy = $host + array('host' => null);
226
                        return;
227
                }
228
                $this->_proxy = compact('host', 'port', 'method', 'user', 'pass');
229
        }
230

    
231
/**
232
 * Set the resource to receive the request content. This resource must support fwrite.
233
 *
234
 * @param resource|bool $resource Resource or false to disable the resource use
235
 * @return void
236
 * @throws SocketException
237
 */
238
        public function setContentResource($resource) {
239
                if ($resource === false) {
240
                        $this->_contentResource = null;
241
                        return;
242
                }
243
                if (!is_resource($resource)) {
244
                        throw new SocketException(__d('cake_dev', 'Invalid resource.'));
245
                }
246
                $this->_contentResource = $resource;
247
        }
248

    
249
/**
250
 * Issue the specified request. HttpSocket::get() and HttpSocket::post() wrap this
251
 * method and provide a more granular interface.
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 *
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 * @param string|array $request Either an URI string, or an array defining host/uri
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 * @return mixed false on error, HttpSocketResponse on success
255
 * @throws SocketException
256
 */
257
        public function request($request = array()) {
258
                $this->reset(false);
259

    
260
                if (is_string($request)) {
261
                        $request = array('uri' => $request);
262
                } elseif (!is_array($request)) {
263
                        return false;
264
                }
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266
                if (!isset($request['uri'])) {
267
                        $request['uri'] = null;
268
                }
269
                $uri = $this->_parseUri($request['uri']);
270
                if (!isset($uri['host'])) {
271
                        $host = $this->config['host'];
272
                }
273
                if (isset($request['host'])) {
274
                        $host = $request['host'];
275
                        unset($request['host']);
276
                }
277
                $request['uri'] = $this->url($request['uri']);
278
                $request['uri'] = $this->_parseUri($request['uri'], true);
279
                $this->request = Hash::merge($this->request, array_diff_key($this->config['request'], array('cookies' => true)), $request);
280

    
281
                $this->_configUri($this->request['uri']);
282

    
283
                $Host = $this->request['uri']['host'];
284
                if (!empty($this->config['request']['cookies'][$Host])) {
285
                        if (!isset($this->request['cookies'])) {
286
                                $this->request['cookies'] = array();
287
                        }
288
                        if (!isset($request['cookies'])) {
289
                                $request['cookies'] = array();
290
                        }
291
                        $this->request['cookies'] = array_merge($this->request['cookies'], $this->config['request']['cookies'][$Host], $request['cookies']);
292
                }
293

    
294
                if (isset($host)) {
295
                        $this->config['host'] = $host;
296
                }
297

    
298
                $this->_setProxy();
299
                $this->request['proxy'] = $this->_proxy;
300

    
301
                $cookies = null;
302

    
303
                if (is_array($this->request['header'])) {
304
                        if (!empty($this->request['cookies'])) {
305
                                $cookies = $this->buildCookies($this->request['cookies']);
306
                        }
307
                        $scheme = '';
308
                        $port = 0;
309
                        if (isset($this->request['uri']['scheme'])) {
310
                                $scheme = $this->request['uri']['scheme'];
311
                        }
312
                        if (isset($this->request['uri']['port'])) {
313
                                $port = $this->request['uri']['port'];
314
                        }
315
                        if (($scheme === 'http' && $port != 80) ||
316
                                ($scheme === 'https' && $port != 443) ||
317
                                ($port != 80 && $port != 443)
318
                        ) {
319
                                $Host .= ':' . $port;
320
                        }
321
                        $this->request['header'] = array_merge(compact('Host'), $this->request['header']);
322
                }
323

    
324
                if (isset($this->request['uri']['user'], $this->request['uri']['pass'])) {
325
                        $this->configAuth('Basic', $this->request['uri']['user'], $this->request['uri']['pass']);
326
                } elseif (isset($this->request['auth'], $this->request['auth']['method'], $this->request['auth']['user'], $this->request['auth']['pass'])) {
327
                        $this->configAuth($this->request['auth']['method'], $this->request['auth']['user'], $this->request['auth']['pass']);
328
                }
329
                $authHeader = Hash::get($this->request, 'header.Authorization');
330
                if (empty($authHeader)) {
331
                        $this->_setAuth();
332
                        $this->request['auth'] = $this->_auth;
333
                }
334

    
335
                if (is_array($this->request['body'])) {
336
                        $this->request['body'] = http_build_query($this->request['body'], '', '&');
337
                }
338

    
339
                if (!empty($this->request['body']) && !isset($this->request['header']['Content-Type'])) {
340
                        $this->request['header']['Content-Type'] = 'application/x-www-form-urlencoded';
341
                }
342

    
343
                if (!empty($this->request['body']) && !isset($this->request['header']['Content-Length'])) {
344
                        $this->request['header']['Content-Length'] = strlen($this->request['body']);
345
                }
346
                if (isset($this->request['uri']['scheme']) && $this->request['uri']['scheme'] === 'https' && in_array($this->config['protocol'], array(false, 'tcp'))) {
347
                        $this->config['protocol'] = 'ssl';
348
                }
349

    
350
                $connectionType = null;
351
                if (isset($this->request['header']['Connection'])) {
352
                        $connectionType = $this->request['header']['Connection'];
353
                }
354
                $this->request['header'] = $this->_buildHeader($this->request['header']) . $cookies;
355

    
356
                if (empty($this->request['line'])) {
357
                        $this->request['line'] = $this->_buildRequestLine($this->request);
358
                }
359

    
360
                if ($this->quirksMode === false && $this->request['line'] === false) {
361
                        return false;
362
                }
363

    
364
                $this->request['raw'] = '';
365
                if ($this->request['line'] !== false) {
366
                        $this->request['raw'] = $this->request['line'];
367
                }
368

    
369
                if ($this->request['header'] !== false) {
370
                        $this->request['raw'] .= $this->request['header'];
371
                }
372

    
373
                $this->request['raw'] .= "\r\n";
374
                $this->request['raw'] .= $this->request['body'];
375

    
376
                // SSL context is set during the connect() method.
377
                $this->write($this->request['raw']);
378

    
379
                $response = null;
380
                $inHeader = true;
381
                while (($data = $this->read()) !== false) {
382
                        if ($this->_contentResource) {
383
                                if ($inHeader) {
384
                                        $response .= $data;
385
                                        $pos = strpos($response, "\r\n\r\n");
386
                                        if ($pos !== false) {
387
                                                $pos += 4;
388
                                                $data = substr($response, $pos);
389
                                                fwrite($this->_contentResource, $data);
390

    
391
                                                $response = substr($response, 0, $pos);
392
                                                $inHeader = false;
393
                                        }
394
                                } else {
395
                                        fwrite($this->_contentResource, $data);
396
                                        fflush($this->_contentResource);
397
                                }
398
                        } else {
399
                                $response .= $data;
400
                        }
401
                }
402

    
403
                if ($connectionType === 'close') {
404
                        $this->disconnect();
405
                }
406

    
407
                list($plugin, $responseClass) = pluginSplit($this->responseClass, true);
408
                App::uses($responseClass, $plugin . 'Network/Http');
409
                if (!class_exists($responseClass)) {
410
                        throw new SocketException(__d('cake_dev', 'Class %s not found.', $this->responseClass));
411
                }
412
                $this->response = new $responseClass($response);
413

    
414
                if (!empty($this->response->cookies)) {
415
                        if (!isset($this->config['request']['cookies'][$Host])) {
416
                                $this->config['request']['cookies'][$Host] = array();
417
                        }
418
                        $this->config['request']['cookies'][$Host] = array_merge($this->config['request']['cookies'][$Host], $this->response->cookies);
419
                }
420

    
421
                if ($this->request['redirect'] && $this->response->isRedirect()) {
422
                        $location = trim($this->response->getHeader('Location'), '=');
423
                        $request['uri'] = str_replace('%2F', '/', $location);
424
                        $request['redirect'] = is_int($this->request['redirect']) ? $this->request['redirect'] - 1 : $this->request['redirect'];
425
                        $this->response = $this->request($request);
426
                }
427

    
428
                return $this->response;
429
        }
430

    
431
/**
432
 * Issues a GET request to the specified URI, query, and request.
433
 *
434
 * Using a string uri and an array of query string parameters:
435
 *
436
 * `$response = $http->get('http://google.com/search', array('q' => 'cakephp', 'client' => 'safari'));`
437
 *
438
 * Would do a GET request to `http://google.com/search?q=cakephp&client=safari`
439
 *
440
 * You could express the same thing using a uri array and query string parameters:
441
 *
442
 * ```
443
 * $response = $http->get(
444
 *     array('host' => 'google.com', 'path' => '/search'),
445
 *     array('q' => 'cakephp', 'client' => 'safari')
446
 * );
447
 * ```
448
 *
449
 * @param string|array $uri URI to request. Either a string uri, or a uri array, see HttpSocket::_parseUri()
450
 * @param array $query Querystring parameters to append to URI
451
 * @param array $request An indexed array with indexes such as 'method' or uri
452
 * @return mixed Result of request, either false on failure or the response to the request.
453
 */
454
        public function get($uri = null, $query = array(), $request = array()) {
455
                if (!empty($query)) {
456
                        $uri = $this->_parseUri($uri, $this->config['request']['uri']);
457
                        if (isset($uri['query'])) {
458
                                $uri['query'] = array_merge($uri['query'], $query);
459
                        } else {
460
                                $uri['query'] = $query;
461
                        }
462
                        $uri = $this->_buildUri($uri);
463
                }
464

    
465
                $request = Hash::merge(array('method' => 'GET', 'uri' => $uri), $request);
466
                return $this->request($request);
467
        }
468

    
469
/**
470
 * Issues a HEAD request to the specified URI, query, and request.
471
 *
472
 * By definition HEAD request are identical to GET request except they return no response body. This means that all
473
 * information and examples relevant to GET also applys to HEAD.
474
 *
475
 * @param string|array $uri URI to request. Either a string URI, or a URI array, see HttpSocket::_parseUri()
476
 * @param array $query Querystring parameters to append to URI
477
 * @param array $request An indexed array with indexes such as 'method' or uri
478
 * @return mixed Result of request, either false on failure or the response to the request.
479
 */
480
        public function head($uri = null, $query = array(), $request = array()) {
481
                if (!empty($query)) {
482
                        $uri = $this->_parseUri($uri, $this->config['request']['uri']);
483
                        if (isset($uri['query'])) {
484
                                $uri['query'] = array_merge($uri['query'], $query);
485
                        } else {
486
                                $uri['query'] = $query;
487
                        }
488
                        $uri = $this->_buildUri($uri);
489
                }
490

    
491
                $request = Hash::merge(array('method' => 'HEAD', 'uri' => $uri), $request);
492
                return $this->request($request);
493
        }
494

    
495
/**
496
 * Issues a POST request to the specified URI, query, and request.
497
 *
498
 * `post()` can be used to post simple data arrays to a URL:
499
 *
500
 * ```
501
 * $response = $http->post('http://example.com', array(
502
 *     'username' => 'batman',
503
 *     'password' => 'bruce_w4yne'
504
 * ));
505
 * ```
506
 *
507
 * @param string|array $uri URI to request. See HttpSocket::_parseUri()
508
 * @param array $data Array of request body data keys and values.
509
 * @param array $request An indexed array with indexes such as 'method' or uri
510
 * @return mixed Result of request, either false on failure or the response to the request.
511
 */
512
        public function post($uri = null, $data = array(), $request = array()) {
513
                $request = Hash::merge(array('method' => 'POST', 'uri' => $uri, 'body' => $data), $request);
514
                return $this->request($request);
515
        }
516

    
517
/**
518
 * Issues a PUT request to the specified URI, query, and request.
519
 *
520
 * @param string|array $uri URI to request, See HttpSocket::_parseUri()
521
 * @param array $data Array of request body data keys and values.
522
 * @param array $request An indexed array with indexes such as 'method' or uri
523
 * @return mixed Result of request
524
 */
525
        public function put($uri = null, $data = array(), $request = array()) {
526
                $request = Hash::merge(array('method' => 'PUT', 'uri' => $uri, 'body' => $data), $request);
527
                return $this->request($request);
528
        }
529

    
530
/**
531
 * Issues a PATCH request to the specified URI, query, and request.
532
 *
533
 * @param string|array $uri URI to request, See HttpSocket::_parseUri()
534
 * @param array $data Array of request body data keys and values.
535
 * @param array $request An indexed array with indexes such as 'method' or uri
536
 * @return mixed Result of request
537
 */
538
        public function patch($uri = null, $data = array(), $request = array()) {
539
                $request = Hash::merge(array('method' => 'PATCH', 'uri' => $uri, 'body' => $data), $request);
540
                return $this->request($request);
541
        }
542

    
543
/**
544
 * Issues a DELETE request to the specified URI, query, and request.
545
 *
546
 * @param string|array $uri URI to request (see {@link _parseUri()})
547
 * @param array $data Array of request body data keys and values.
548
 * @param array $request An indexed array with indexes such as 'method' or uri
549
 * @return mixed Result of request
550
 */
551
        public function delete($uri = null, $data = array(), $request = array()) {
552
                $request = Hash::merge(array('method' => 'DELETE', 'uri' => $uri, 'body' => $data), $request);
553
                return $this->request($request);
554
        }
555

    
556
/**
557
 * Normalizes URLs into a $uriTemplate. If no template is provided
558
 * a default one will be used. Will generate the URL using the
559
 * current config information.
560
 *
561
 * ### Usage:
562
 *
563
 * After configuring part of the request parameters, you can use url() to generate
564
 * URLs.
565
 *
566
 * ```
567
 * $http = new HttpSocket('http://www.cakephp.org');
568
 * $url = $http->url('/search?q=bar');
569
 * ```
570
 *
571
 * Would return `http://www.cakephp.org/search?q=bar`
572
 *
573
 * url() can also be used with custom templates:
574
 *
575
 * `$url = $http->url('http://www.cakephp/search?q=socket', '/%path?%query');`
576
 *
577
 * Would return `/search?q=socket`.
578
 *
579
 * @param string|array $url Either a string or array of URL options to create a URL with.
580
 * @param string $uriTemplate A template string to use for URL formatting.
581
 * @return mixed Either false on failure or a string containing the composed URL.
582
 */
583
        public function url($url = null, $uriTemplate = null) {
584
                if ($url === null) {
585
                        $url = '/';
586
                }
587
                if (is_string($url)) {
588
                        $scheme = $this->config['request']['uri']['scheme'];
589
                        if (is_array($scheme)) {
590
                                $scheme = $scheme[0];
591
                        }
592
                        $port = $this->config['request']['uri']['port'];
593
                        if (is_array($port)) {
594
                                $port = $port[0];
595
                        }
596
                        if ($url{0} === '/') {
597
                                $url = $this->config['request']['uri']['host'] . ':' . $port . $url;
598
                        }
599
                        if (!preg_match('/^.+:\/\/|\*|^\//', $url)) {
600
                                $url = $scheme . '://' . $url;
601
                        }
602
                } elseif (!is_array($url) && !empty($url)) {
603
                        return false;
604
                }
605

    
606
                $base = array_merge($this->config['request']['uri'], array('scheme' => array('http', 'https'), 'port' => array(80, 443)));
607
                $url = $this->_parseUri($url, $base);
608

    
609
                if (empty($url)) {
610
                        $url = $this->config['request']['uri'];
611
                }
612

    
613
                if (!empty($uriTemplate)) {
614
                        return $this->_buildUri($url, $uriTemplate);
615
                }
616
                return $this->_buildUri($url);
617
        }
618

    
619
/**
620
 * Set authentication in request
621
 *
622
 * @return void
623
 * @throws SocketException
624
 */
625
        protected function _setAuth() {
626
                if (empty($this->_auth)) {
627
                        return;
628
                }
629
                $method = key($this->_auth);
630
                list($plugin, $authClass) = pluginSplit($method, true);
631
                $authClass = Inflector::camelize($authClass) . 'Authentication';
632
                App::uses($authClass, $plugin . 'Network/Http');
633

    
634
                if (!class_exists($authClass)) {
635
                        throw new SocketException(__d('cake_dev', 'Unknown authentication method.'));
636
                }
637
                if (!method_exists($authClass, 'authentication')) {
638
                        throw new SocketException(__d('cake_dev', 'The %s does not support authentication.', $authClass));
639
                }
640
                call_user_func_array("$authClass::authentication", array($this, &$this->_auth[$method]));
641
        }
642

    
643
/**
644
 * Set the proxy configuration and authentication
645
 *
646
 * @return void
647
 * @throws SocketException
648
 */
649
        protected function _setProxy() {
650
                if (empty($this->_proxy) || !isset($this->_proxy['host'], $this->_proxy['port'])) {
651
                        return;
652
                }
653
                $this->config['host'] = $this->_proxy['host'];
654
                $this->config['port'] = $this->_proxy['port'];
655
                $this->config['proxy'] = true;
656

    
657
                if (empty($this->_proxy['method']) || !isset($this->_proxy['user'], $this->_proxy['pass'])) {
658
                        return;
659
                }
660
                list($plugin, $authClass) = pluginSplit($this->_proxy['method'], true);
661
                $authClass = Inflector::camelize($authClass) . 'Authentication';
662
                App::uses($authClass, $plugin . 'Network/Http');
663

    
664
                if (!class_exists($authClass)) {
665
                        throw new SocketException(__d('cake_dev', 'Unknown authentication method for proxy.'));
666
                }
667
                if (!method_exists($authClass, 'proxyAuthentication')) {
668
                        throw new SocketException(__d('cake_dev', 'The %s does not support proxy authentication.', $authClass));
669
                }
670
                call_user_func_array("$authClass::proxyAuthentication", array($this, &$this->_proxy));
671

    
672
                if (!empty($this->request['header']['Proxy-Authorization'])) {
673
                        $this->config['proxyauth'] = $this->request['header']['Proxy-Authorization'];
674
                        if ($this->request['uri']['scheme'] === 'https') {
675
                                $this->request['header'] = Hash::remove($this->request['header'], 'Proxy-Authorization');
676
                        }
677
                }
678
        }
679

    
680
/**
681
 * Parses and sets the specified URI into current request configuration.
682
 *
683
 * @param string|array $uri URI, See HttpSocket::_parseUri()
684
 * @return bool If uri has merged in config
685
 */
686
        protected function _configUri($uri = null) {
687
                if (empty($uri)) {
688
                        return false;
689
                }
690

    
691
                if (is_array($uri)) {
692
                        $uri = $this->_parseUri($uri);
693
                } else {
694
                        $uri = $this->_parseUri($uri, true);
695
                }
696

    
697
                if (!isset($uri['host'])) {
698
                        return false;
699
                }
700
                $config = array(
701
                        'request' => array(
702
                                'uri' => array_intersect_key($uri, $this->config['request']['uri'])
703
                        )
704
                );
705
                $this->config = Hash::merge($this->config, $config);
706
                $this->config = Hash::merge($this->config, array_intersect_key($this->config['request']['uri'], $this->config));
707
                return true;
708
        }
709

    
710
/**
711
 * Takes a $uri array and turns it into a fully qualified URL string
712
 *
713
 * @param string|array $uri Either A $uri array, or a request string. Will use $this->config if left empty.
714
 * @param string $uriTemplate The Uri template/format to use.
715
 * @return mixed A fully qualified URL formatted according to $uriTemplate, or false on failure
716
 */
717
        protected function _buildUri($uri = array(), $uriTemplate = '%scheme://%user:%pass@%host:%port/%path?%query#%fragment') {
718
                if (is_string($uri)) {
719
                        $uri = array('host' => $uri);
720
                }
721
                $uri = $this->_parseUri($uri, true);
722

    
723
                if (!is_array($uri) || empty($uri)) {
724
                        return false;
725
                }
726

    
727
                $uri['path'] = preg_replace('/^\//', null, $uri['path']);
728
                $uri['query'] = http_build_query($uri['query'], '', '&');
729
                $uri['query'] = rtrim($uri['query'], '=');
730
                $stripIfEmpty = array(
731
                        'query' => '?%query',
732
                        'fragment' => '#%fragment',
733
                        'user' => '%user:%pass@',
734
                        'host' => '%host:%port/'
735
                );
736

    
737
                foreach ($stripIfEmpty as $key => $strip) {
738
                        if (empty($uri[$key])) {
739
                                $uriTemplate = str_replace($strip, null, $uriTemplate);
740
                        }
741
                }
742

    
743
                $defaultPorts = array('http' => 80, 'https' => 443);
744
                if (array_key_exists($uri['scheme'], $defaultPorts) && $defaultPorts[$uri['scheme']] == $uri['port']) {
745
                        $uriTemplate = str_replace(':%port', null, $uriTemplate);
746
                }
747
                foreach ($uri as $property => $value) {
748
                        $uriTemplate = str_replace('%' . $property, $value, $uriTemplate);
749
                }
750

    
751
                if ($uriTemplate === '/*') {
752
                        $uriTemplate = '*';
753
                }
754
                return $uriTemplate;
755
        }
756

    
757
/**
758
 * Parses the given URI and breaks it down into pieces as an indexed array with elements
759
 * such as 'scheme', 'port', 'query'.
760
 *
761
 * @param string|array $uri URI to parse
762
 * @param bool|array $base If true use default URI config, otherwise indexed array to set 'scheme', 'host', 'port', etc.
763
 * @return array Parsed URI
764
 */
765
        protected function _parseUri($uri = null, $base = array()) {
766
                $uriBase = array(
767
                        'scheme' => array('http', 'https'),
768
                        'host' => null,
769
                        'port' => array(80, 443),
770
                        'user' => null,
771
                        'pass' => null,
772
                        'path' => '/',
773
                        'query' => null,
774
                        'fragment' => null
775
                );
776

    
777
                if (is_string($uri)) {
778
                        $uri = parse_url($uri);
779
                }
780
                if (!is_array($uri) || empty($uri)) {
781
                        return false;
782
                }
783
                if ($base === true) {
784
                        $base = $uriBase;
785
                }
786

    
787
                if (isset($base['port'], $base['scheme']) && is_array($base['port']) && is_array($base['scheme'])) {
788
                        if (isset($uri['scheme']) && !isset($uri['port'])) {
789
                                $base['port'] = $base['port'][array_search($uri['scheme'], $base['scheme'])];
790
                        } elseif (isset($uri['port']) && !isset($uri['scheme'])) {
791
                                $base['scheme'] = $base['scheme'][array_search($uri['port'], $base['port'])];
792
                        }
793
                }
794

    
795
                if (is_array($base) && !empty($base)) {
796
                        $uri = array_merge($base, $uri);
797
                }
798

    
799
                if (isset($uri['scheme']) && is_array($uri['scheme'])) {
800
                        $uri['scheme'] = array_shift($uri['scheme']);
801
                }
802
                if (isset($uri['port']) && is_array($uri['port'])) {
803
                        $uri['port'] = array_shift($uri['port']);
804
                }
805

    
806
                if (array_key_exists('query', $uri)) {
807
                        $uri['query'] = $this->_parseQuery($uri['query']);
808
                }
809

    
810
                if (!array_intersect_key($uriBase, $uri)) {
811
                        return false;
812
                }
813
                return $uri;
814
        }
815

    
816
/**
817
 * This function can be thought of as a reverse to PHP5's http_build_query(). It takes a given query string and turns it into an array and
818
 * supports nesting by using the php bracket syntax. So this means you can parse queries like:
819
 *
820
 * - ?key[subKey]=value
821
 * - ?key[]=value1&key[]=value2
822
 *
823
 * A leading '?' mark in $query is optional and does not effect the outcome of this function.
824
 * For the complete capabilities of this implementation take a look at HttpSocketTest::testparseQuery()
825
 *
826
 * @param string|array $query A query string to parse into an array or an array to return directly "as is"
827
 * @return array The $query parsed into a possibly multi-level array. If an empty $query is
828
 *     given, an empty array is returned.
829
 */
830
        protected function _parseQuery($query) {
831
                if (is_array($query)) {
832
                        return $query;
833
                }
834

    
835
                $parsedQuery = array();
836

    
837
                if (is_string($query) && !empty($query)) {
838
                        $query = preg_replace('/^\?/', '', $query);
839
                        $items = explode('&', $query);
840

    
841
                        foreach ($items as $item) {
842
                                if (strpos($item, '=') !== false) {
843
                                        list($key, $value) = explode('=', $item, 2);
844
                                } else {
845
                                        $key = $item;
846
                                        $value = null;
847
                                }
848

    
849
                                $key = urldecode($key);
850
                                $value = urldecode($value);
851

    
852
                                if (preg_match_all('/\[([^\[\]]*)\]/iUs', $key, $matches)) {
853
                                        $subKeys = $matches[1];
854
                                        $rootKey = substr($key, 0, strpos($key, '['));
855
                                        if (!empty($rootKey)) {
856
                                                array_unshift($subKeys, $rootKey);
857
                                        }
858
                                        $queryNode =& $parsedQuery;
859

    
860
                                        foreach ($subKeys as $subKey) {
861
                                                if (!is_array($queryNode)) {
862
                                                        $queryNode = array();
863
                                                }
864

    
865
                                                if ($subKey === '') {
866
                                                        $queryNode[] = array();
867
                                                        end($queryNode);
868
                                                        $subKey = key($queryNode);
869
                                                }
870
                                                $queryNode =& $queryNode[$subKey];
871
                                        }
872
                                        $queryNode = $value;
873
                                        continue;
874
                                }
875
                                if (!isset($parsedQuery[$key])) {
876
                                        $parsedQuery[$key] = $value;
877
                                } else {
878
                                        $parsedQuery[$key] = (array)$parsedQuery[$key];
879
                                        $parsedQuery[$key][] = $value;
880
                                }
881
                        }
882
                }
883
                return $parsedQuery;
884
        }
885

    
886
/**
887
 * Builds a request line according to HTTP/1.1 specs. Activate quirks mode to work outside specs.
888
 *
889
 * @param array $request Needs to contain a 'uri' key. Should also contain a 'method' key, otherwise defaults to GET.
890
 * @return string Request line
891
 * @throws SocketException
892
 */
893
        protected function _buildRequestLine($request = array()) {
894
                $asteriskMethods = array('OPTIONS');
895

    
896
                if (is_string($request)) {
897
                        $isValid = preg_match("/(.+) (.+) (.+)\r\n/U", $request, $match);
898
                        if (!$this->quirksMode && (!$isValid || ($match[2] === '*' && !in_array($match[3], $asteriskMethods)))) {
899
                                throw new SocketException(__d('cake_dev', 'HttpSocket::_buildRequestLine - Passed an invalid request line string. Activate quirks mode to do this.'));
900
                        }
901
                        return $request;
902
                } elseif (!is_array($request)) {
903
                        return false;
904
                } elseif (!array_key_exists('uri', $request)) {
905
                        return false;
906
                }
907

    
908
                $request['uri'] = $this->_parseUri($request['uri']);
909
                $request += array('method' => 'GET');
910
                if (!empty($this->_proxy['host']) && $request['uri']['scheme'] !== 'https') {
911
                        $request['uri'] = $this->_buildUri($request['uri'], '%scheme://%host:%port/%path?%query');
912
                } else {
913
                        $request['uri'] = $this->_buildUri($request['uri'], '/%path?%query');
914
                }
915

    
916
                if (!$this->quirksMode && $request['uri'] === '*' && !in_array($request['method'], $asteriskMethods)) {
917
                        throw new SocketException(__d('cake_dev', 'HttpSocket::_buildRequestLine - The "*" asterisk character is only allowed for the following methods: %s. Activate quirks mode to work outside of HTTP/1.1 specs.', implode(',', $asteriskMethods)));
918
                }
919
                $version = isset($request['version']) ? $request['version'] : '1.1';
920
                return $request['method'] . ' ' . $request['uri'] . ' HTTP/' . $version . "\r\n";
921
        }
922

    
923
/**
924
 * Builds the header.
925
 *
926
 * @param array $header Header to build
927
 * @param string $mode Mode
928
 * @return string Header built from array
929
 */
930
        protected function _buildHeader($header, $mode = 'standard') {
931
                if (is_string($header)) {
932
                        return $header;
933
                } elseif (!is_array($header)) {
934
                        return false;
935
                }
936

    
937
                $fieldsInHeader = array();
938
                foreach ($header as $key => $value) {
939
                        $lowKey = strtolower($key);
940
                        if (array_key_exists($lowKey, $fieldsInHeader)) {
941
                                $header[$fieldsInHeader[$lowKey]] = $value;
942
                                unset($header[$key]);
943
                        } else {
944
                                $fieldsInHeader[$lowKey] = $key;
945
                        }
946
                }
947

    
948
                $returnHeader = '';
949
                foreach ($header as $field => $contents) {
950
                        if (is_array($contents) && $mode === 'standard') {
951
                                $contents = implode(',', $contents);
952
                        }
953
                        foreach ((array)$contents as $content) {
954
                                $contents = preg_replace("/\r\n(?![\t ])/", "\r\n ", $content);
955
                                $field = $this->_escapeToken($field);
956

    
957
                                $returnHeader .= $field . ': ' . $contents . "\r\n";
958
                        }
959
                }
960
                return $returnHeader;
961
        }
962

    
963
/**
964
 * Builds cookie headers for a request.
965
 *
966
 * Cookies can either be in the format returned in responses, or
967
 * a simple key => value pair.
968
 *
969
 * @param array $cookies Array of cookies to send with the request.
970
 * @return string Cookie header string to be sent with the request.
971
 */
972
        public function buildCookies($cookies) {
973
                $header = array();
974
                foreach ($cookies as $name => $cookie) {
975
                        if (is_array($cookie)) {
976
                                $value = $this->_escapeToken($cookie['value'], array(';'));
977
                        } else {
978
                                $value = $this->_escapeToken($cookie, array(';'));
979
                        }
980
                        $header[] = $name . '=' . $value;
981
                }
982
                return $this->_buildHeader(array('Cookie' => implode('; ', $header)), 'pragmatic');
983
        }
984

    
985
/**
986
 * Escapes a given $token according to RFC 2616 (HTTP 1.1 specs)
987
 *
988
 * @param string $token Token to escape
989
 * @param array $chars Characters to escape
990
 * @return string Escaped token
991
 */
992
        protected function _escapeToken($token, $chars = null) {
993
                $regex = '/([' . implode('', $this->_tokenEscapeChars(true, $chars)) . '])/';
994
                $token = preg_replace($regex, '"\\1"', $token);
995
                return $token;
996
        }
997

    
998
/**
999
 * Gets escape chars according to RFC 2616 (HTTP 1.1 specs).
1000
 *
1001
 * @param bool $hex true to get them as HEX values, false otherwise
1002
 * @param array $chars Characters to escape
1003
 * @return array Escape chars
1004
 */
1005
        protected function _tokenEscapeChars($hex = true, $chars = null) {
1006
                if (!empty($chars)) {
1007
                        $escape = $chars;
1008
                } else {
1009
                        $escape = array('"', "(", ")", "<", ">", "@", ",", ";", ":", "\\", "/", "[", "]", "?", "=", "{", "}", " ");
1010
                        for ($i = 0; $i <= 31; $i++) {
1011
                                $escape[] = chr($i);
1012
                        }
1013
                        $escape[] = chr(127);
1014
                }
1015

    
1016
                if (!$hex) {
1017
                        return $escape;
1018
                }
1019
                foreach ($escape as $key => $char) {
1020
                        $escape[$key] = '\\x' . str_pad(dechex(ord($char)), 2, '0', STR_PAD_LEFT);
1021
                }
1022
                return $escape;
1023
        }
1024

    
1025
/**
1026
 * Resets the state of this HttpSocket instance to it's initial state (before Object::__construct got executed) or does
1027
 * the same thing partially for the request and the response property only.
1028
 *
1029
 * @param bool $full If set to false only HttpSocket::response and HttpSocket::request are reset
1030
 * @return bool True on success
1031
 */
1032
        public function reset($full = true) {
1033
                static $initalState = array();
1034
                if (empty($initalState)) {
1035
                        $initalState = get_class_vars(__CLASS__);
1036
                }
1037
                if (!$full) {
1038
                        $this->request = $initalState['request'];
1039
                        $this->response = $initalState['response'];
1040
                        return true;
1041
                }
1042
                parent::reset($initalState);
1043
                return true;
1044
        }
1045

    
1046
}
1047