-
Notifications
You must be signed in to change notification settings - Fork 0
/
httprequest.class.php
296 lines (249 loc) · 7.43 KB
/
httprequest.class.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
<?php
require_once dirname(__FILE__) . DIRECTORY_SEPARATOR . 'moriarty.inc.php';
require_once MORIARTY_DIR . 'httpcache.class.php';
require_once MORIARTY_DIR . 'httpclient.class.php';
require_once MORIARTY_DIR . 'httpresponse.class.php';
/**
* Represents an HTTP protocol request.
*/
class HttpRequest {
/**
* @access private
*/
var $method;
/**
* @access private
*/
var $uri;
/**
* @access private
*/
var $headers = array();
/**
* @access private
*/
var $client;
/**
* @access private
*/
var $body;
/**
* @access private
*/
var $credentials;
var $_cache = null;
var $_read_from_cache = TRUE;
var $_always_validate_cache = TRUE;
var $_use_stale_response_on_failure = FALSE;
var $_proxy = null;
var $_async_key = null;
var $_response_from_cache = null;
/**
* Create a new instance of this class
* @param string method the HTTP method to issue (i.e. GET, POST, PUT etc)
* @param string uri the URI to issue the request to
* @param Credentials credentials the credentials to use for secure requests (optional)
*/
function __construct($method, $uri, $credentials = null, $cache = null) {
$uri = preg_replace("~#.*$~", '', $uri);
$this->uri = $uri;
$this->method = strtoupper($method);
if ( $credentials != null ) {
$this->credentials = $credentials;
}
else {
$this->credentials = null;
}
$this->headers = array();
$this->headers['Accept'] = '*/*';
$this->options = array();
$this->body = null;
}
function set_cache($cache) {
$this->_cache = $cache;
}
function always_validate_cache($val) {
$this->_always_validate_cache = $val;
}
function use_stale_response_on_failure($val) {
$this->_use_stale_response_on_failure = $val;
}
/**
* Whether to read from the cache.
* When set to FALSE, the request will be written to the cache but not read from it
*/
function read_from_cache($val) {
$this->_read_from_cache = $val;
}
function set_proxy($val) {
$this->_proxy = $val;
}
/**
* Issue the HTTP request
* @return HttpResponse
*/
function execute() {
$this->execute_async();
return $this->get_async_response();
}
function execute_async() {
if ( $this->_cache && $this->_read_from_cache ) {
$cached_response = $this->_cache->load($this->cache_id(), $this->_use_stale_response_on_failure);
if ($cached_response) {
$cached_response->request_method = $this->method;
$cached_response->request_uri = $this->uri;
$cached_response->request_headers = $this->headers;
$cached_response->request_body = $this->body;
$cached_response->headers['x-moriarty-from-cache'] = 'yes';
$this->_response_from_cache = $cached_response;
if ($this->_always_validate_cache ) {
if ( isset($cached_response->headers['etag']) ) {
$this->set_if_none_match($cached_response->headers['etag']);
}
}
else {
return;
}
}
}
$this->client = HttpClient::Create();
$this->_async_key = $this->client->send_request($this);
}
function get_async_response()
{
$response = null;
if ($this->_response_from_cache === null || $this->_always_validate_cache) {
$response = $this->client->get_response_for($this->_async_key);
}
if ( $response === null ) {
if ( $this->_cache && $this->_response_from_cache) {
return $this->_response_from_cache;
}
$response_code = $response_info['http_code'];
$response_body = "Request failed: " . $response_error;
$response_headers = array();
}
/*
echo '<p>The HTTP request sent was:</p>';
echo '<pre>' . htmlspecialchars($this->to_string()) . '</pre>';
echo '<p>The server response was:</p>';
echo '<pre>' . htmlspecialchars($response->to_string()) . '</pre>';
*/
if ( $this->_cache ) {
if ( $this->_read_from_cache && $this->_response_from_cache && $response->status_code == 304) {
return $this->_response_from_cache;
}
if (! $this->_response_from_cache ) {
$max_age = FALSE;
if ( (defined('MORIARTY_ALWAYS_CACHE_EVERYTHING') && $response->is_success()) || ($this->method == 'GET' && $response->is_cacheable()) ) {
if(isset($response->headers['cache-control'])){
$cache_control = $response->headers['cache-control'];
$cache_control_tokens = preg_split('/,/', $cache_control);
foreach ( $cache_control_tokens as $token) {
$token = trim($token);
if ( preg_match('/max-age=(.+)/', $token, $m) ) {
$max_age = $m[1];
break;
}
}
}
$this->_cache->save($response, $this->cache_id(), array(), $max_age);
}
}
}
return $response;
}
/**
* Obtain the HTTP headers to be sent with this request
* @return array headers in the format "name:value"
*/
function get_headers() {
$flat_headers = array();
foreach ($this->headers as $k=>$v) {
$flat_headers[] = "$k: $v";
}
return $flat_headers;
}
/**
* Set content to be sent with the request
* @param string val the content to be sent
*/
function set_body($val, $gzip_body=false) {
if($gzip_body) {
$val = gzencode($val);
$this->body = $val;
$this->headers['Content-Encoding'] = 'gzip';
$this->headers['Content-Length'] = strlen($val);
}
else
{
$this->body = $val;
}
}
/**
* Get the content to be sent with the request
* @return string the content to be sent
*/
function get_body() {
return $this->body;
}
/**
* Set the HTTP accept-encoding header for the request
* @param string val the media types to be used as the accept header value
*/
function set_accept_encoding($val) {
$this->headers['Accept-Encoding'] = $val;
}
/**
* Set the HTTP accept header for the request
* @param string val the media types to be used as the accept header value
*/
function set_accept($val) {
$this->headers['Accept'] = $val;
}
/**
* Set the HTTP content-type header for the request
* @param string val the media type to be used as the content-type header value
*/
function set_content_type($val) {
$this->headers['Content-Type'] = $val;
}
/**
* Set the HTTP if-match header for the request
* @param string val the etag to be used as the if-match header value
*/
function set_if_match($val) {
$this->headers['If-Match'] = $val;
}
/**
* Set the HTTP if-none-match header for the request
* @param string val the etag to be used as the if-none-match header value
*/
function set_if_none_match($val) {
$this->headers['If-None-Match'] = $val;
}
function cache_id() {
$accept = '*/*';
if (array_key_exists('Accept', $this->headers)) {
$accept = $this->headers['Accept'];
}
$accept_parts = preg_split('/,/', $accept);
sort($accept_parts);
$accept = join(',', $accept_parts);
return md5('<' . $this->uri . '>' . $accept . $this->get_body());
}
/**
* Obtain a string representation of this request
* @return string
*/
function to_string() {
$ret = strtoupper($this->method) . ' ' . $this->uri . "\n";
foreach ($this->headers as $k=>$v) {
$ret .= "$k: $v\n";
}
$ret .= "\n";
$ret .= $this->get_body();
return $ret;
}
}
?>