Differences Between: [Versions 310 and 403] [Versions 311 and 403] [Versions 39 and 403] [Versions 400 and 403] [Versions 401 and 403]
1 <?php 2 3 namespace IMSGlobal\LTI; 4 5 global $CFG; 6 require_once($CFG->libdir . '/filelib.php'); 7 8 /** 9 * Class to represent an HTTP message 10 * 11 * @author Stephen P Vickers <svickers@imsglobal.org> 12 * @copyright IMS Global Learning Consortium Inc 13 * @date 2016 14 * @version 3.0.0 15 * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0 16 */ 17 #[\AllowDynamicProperties] 18 class HTTPMessage 19 { 20 21 /** 22 * True if message was sent successfully. 23 * 24 * @var boolean $ok 25 */ 26 public $ok = false; 27 28 /** 29 * Request body. 30 * 31 * @var request $request 32 */ 33 public $request = null; 34 35 /** 36 * Request headers. 37 * 38 * @var request_headers $requestHeaders 39 */ 40 public $requestHeaders = ''; 41 42 /** 43 * Response body. 44 * 45 * @var response $response 46 */ 47 public $response = null; 48 49 /** 50 * Response headers. 51 * 52 * @var response_headers $responseHeaders 53 */ 54 public $responseHeaders = ''; 55 56 /** 57 * Status of response (0 if undetermined). 58 * 59 * @var status $status 60 */ 61 public $status = 0; 62 63 /** 64 * Error message 65 * 66 * @var error $error 67 */ 68 public $error = ''; 69 70 /** 71 * Request URL. 72 * 73 * @var url $url 74 */ 75 private $url = null; 76 77 /** 78 * Request method. 79 * 80 * @var method $method 81 */ 82 private $method = null; 83 84 /** 85 * Class constructor. 86 * 87 * @param string $url URL to send request to 88 * @param string $method Request method to use (optional, default is GET) 89 * @param mixed $params Associative array of parameter values to be passed or message body (optional, default is none) 90 * @param string $header Values to include in the request header (optional, default is none) 91 */ 92 function __construct($url, $method = 'GET', $params = null, $header = null) 93 { 94 95 $this->url = $url; 96 $this->method = strtoupper($method); 97 if (is_array($params)) { 98 $this->request = http_build_query($params); 99 } else { 100 $this->request = $params; 101 } 102 if (!empty($header)) { 103 $this->requestHeaders = explode("\n", $header); 104 } 105 106 } 107 108 /** 109 * Send the request to the target URL. 110 * 111 * @return boolean True if the request was successful 112 */ 113 public function send() 114 { 115 116 $this->ok = false; 117 // Try using curl if available 118 if (function_exists('curl_init')) { 119 $resp = ''; 120 $chResp = ''; 121 122 $curl = new \curl(); 123 $options = [ 124 'CURLOPT_HEADER' => true, 125 'CURLINFO_HEADER_OUT' => true, 126 ]; 127 if (!empty($this->requestHeaders)) { 128 $options['CURLOPT_HTTPHEADER'] = $this->requestHeaders; 129 } else { 130 $options['CURLOPT_HEADER'] = 0; 131 } 132 if ($this->method === 'POST') { 133 $chResp = $curl->post($this->url, $this->request, $options); 134 } else if ($this->method !== 'GET') { 135 if (!is_null($this->request)) { 136 $chResp = $curl->post($this->url, $this->request, $options); 137 } 138 } else { 139 $chResp = $curl->get($this->url, null, $options); 140 } 141 $info = $curl->get_info(); 142 143 if (!$curl->get_errno() && !$curl->error) { 144 $chResp = str_replace("\r\n", "\n", $chResp); 145 $chRespSplit = explode("\n\n", $chResp, 2); 146 if ((count($chRespSplit) > 1) && (substr($chRespSplit[1], 0, 5) === 'HTTP/')) { 147 $chRespSplit = explode("\n\n", $chRespSplit[1], 2); 148 } 149 $this->responseHeaders = $chRespSplit[0]; 150 $resp = $chRespSplit[1]; 151 $this->status = $info['http_code']; 152 $this->ok = $this->status < 400; 153 if (!$this->ok) { 154 $this->error = $curl->error; 155 } 156 } else { 157 $this->error = $curl->error; 158 $resp = $chResp; 159 } 160 161 $this->response = $resp; 162 $this->requestHeaders = !empty($info['request_header']) ? str_replace("\r\n", "\n", $info['request_header']) : ''; 163 } else { 164 // Try using fopen if curl was not available 165 $opts = array('method' => $this->method, 166 'content' => $this->request 167 ); 168 if (!empty($this->requestHeaders)) { 169 $opts['header'] = $this->requestHeaders; 170 } 171 try { 172 $ctx = stream_context_create(array('http' => $opts)); 173 $fp = @fopen($this->url, 'rb', false, $ctx); 174 if ($fp) { 175 $resp = @stream_get_contents($fp); 176 $this->ok = $resp !== false; 177 } 178 } catch (\Exception $e) { 179 $this->ok = false; 180 } 181 } 182 183 return $this->ok; 184 185 } 186 187 }
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