src/Network/CurlResult.php

   1 <?php
   2
   3 namespace Friendica\Network;
   4
   5 use Friendica\Core\Logger;
   6 use Friendica\Network\HTTPException\InternalServerErrorException;
   7 use Friendica\Util\Network;
   8
   9 /**
  10  * A content class for Curl call results
  11  */
  12 class CurlResult
  13 {
  14         /**
  15          * @var int HTTP return code or 0 if timeout or failure
  16          */
  17         private $returnCode;
  18
  19         /**
  20          * @var string the content type of the Curl call
  21          */
  22         private $contentType;
  23
  24         /**
  25          * @var string the HTTP headers of the Curl call
  26          */
  27         private $header;
  28
  29         /**
  30          * @var boolean true (if HTTP 2xx result) or false
  31          */
  32         private $isSuccess;
  33
  34         /**
  35          * @var string the URL which was called
  36          */
  37         private $url;
  38
  39         /**
  40          * @var string in case of redirect, content was finally retrieved from this URL
  41          */
  42         private $redirectUrl;
  43
  44         /**
  45          * @var string fetched content
  46          */
  47         private $body;
  48
  49         /**
  50          * @var array some informations about the fetched data
  51          */
  52         private $info;
  53
  54         /**
  55          * @var boolean true if the URL has a redirect
  56          */
  57         private $isRedirectUrl;
  58
  59         /**
  60          * @var boolean true if the curl request timed out
  61          */
  62         private $isTimeout;
  63
  64         /**
  65          * @var int the error number or 0 (zero) if no error
  66          */
  67         private $errorNumber;
  68
  69         /**
  70          * @var string the error message or '' (the empty string) if no
  71          */
  72         private $error;
  73
  74         /**
  75          * Creates an errored CURL response
  76          *
  77          * @param string $url optional URL
  78          *
  79          * @return CurlResult a CURL with error response
  80          * @throws InternalServerErrorException
  81          */
  82         public static function createErrorCurl($url = '')
  83         {
  84                 return new CurlResult($url, '', ['http_code' => 0]);
  85         }
  86
  87         /**
  88          * Curl constructor.
  89          * @param string $url the URL which was called
  90          * @param string $result the result of the curl execution
  91          * @param array $info an additional info array
  92          * @param int $errorNumber the error number or 0 (zero) if no error
  93          * @param string $error the error message or '' (the empty string) if no
  94          *
  95          * @throws InternalServerErrorException when HTTP code of the CURL response is missing
  96          */
  97         public function __construct($url, $result, $info, $errorNumber = 0, $error = '')
  98         {
  99                 if (!array_key_exists('http_code', $info)) {
 100                         throw new InternalServerErrorException('CURL response doesn\'t contains a response HTTP code');
 101                 }
 102
 103                 $this->returnCode = $info['http_code'];
 104                 $this->url = $url;
 105                 $this->info = $info;
 106                 $this->errorNumber = $errorNumber;
 107                 $this->error = $error;
 108
 109                 Logger::log($url . ': ' . $this->returnCode . " " . $result, Logger::DATA);
 110
 111                 $this->parseBodyHeader($result);
 112                 $this->checkSuccess();
 113                 $this->checkRedirect();
 114                 $this->checkInfo();
 115         }
 116
 117         private function parseBodyHeader($result)
 118         {
 119                 // Pull out multiple headers, e.g. proxy and continuation headers
 120                 // allow for HTTP/2.x without fixing code
 121
 122                 $header = '';
 123                 $base = $result;
 124                 while (preg_match('/^HTTP\/.+? \d+/', $base)) {
 125                         $chunk = substr($base, 0, strpos($base, "\r\n\r\n") + 4);
 126                         $header .= $chunk;
 127                         $base = substr($base, strlen($chunk));
 128                 }
 129
 130                 $this->body = substr($result, strlen($header));
 131                 $this->header = $header;
 132         }
 133
 134         private function checkSuccess()
 135         {
 136                 $this->isSuccess = ($this->returnCode >= 200 && $this->returnCode <= 299) || $this->errorNumber == 0;
 137
 138                 // Everything higher or equal 400 is not a success
 139                 if ($this->returnCode >= 400) {
 140                         $this->isSuccess = false;
 141                 }
 142
 143                 if (!$this->isSuccess) {
 144                         Logger::log('error: ' . $this->url . ': ' . $this->returnCode . ' - ' . $this->error, Logger::INFO);
 145                         Logger::log('debug: ' . print_r($this->info, true), Logger::DATA);
 146                 }
 147
 148                 if (!$this->isSuccess && $this->errorNumber == CURLE_OPERATION_TIMEDOUT) {
 149                         $this->isTimeout = true;
 150                 } else {
 151                         $this->isTimeout = false;
 152                 }
 153         }
 154
 155         private function checkRedirect()
 156         {
 157                 if (!array_key_exists('url', $this->info)) {
 158                         $this->redirectUrl = '';
 159                 } else {
 160                         $this->redirectUrl = $this->info['url'];
 161                 }
 162
 163                 if ($this->returnCode == 301 || $this->returnCode == 302 || $this->returnCode == 303 || $this->returnCode== 307) {
 164                         $redirect_parts = parse_url(defaults($this->info, 'redirect_url', ''));
 165                         if (empty($redirect_parts)) {
 166                                 $redirect_parts = [];
 167                         }
 168
 169                         if (preg_match('/(Location:|URI:)(.*?)\n/i', $this->header, $matches)) {
 170                                 $redirect_parts2 = parse_url(trim(array_pop($matches)));
 171                                 if (!empty($redirect_parts2)) {
 172                                         $redirect_parts = array_merge($redirect_parts, $redirect_parts2);
 173                                 }
 174                         }
 175
 176                         $parts = parse_url(defaults($this->info, 'url', ''));
 177                         if (empty($parts)) {
 178                                 $parts = [];
 179                         }
 180
 181                         /// @todo Checking the corresponding RFC which parts of a redirect can be ommitted.
 182                         $components = ['scheme', 'host', 'path', 'query', 'fragment'];
 183                         foreach ($components as $component) {
 184                                 if (empty($redirect_parts[$component]) && !empty($parts[$component])) {
 185                                         $redirect_parts[$component] = $parts[$component];
 186                                 }
 187                         }
 188
 189                         $this->redirectUrl = Network::unparseURL($redirect_parts);
 190
 191                         $this->isRedirectUrl = true;
 192                 } else {
 193                         $this->isRedirectUrl = false;
 194                 }
 195         }
 196
 197         private function checkInfo()
 198         {
 199                 if (isset($this->info['content_type'])) {
 200                         $this->contentType = $this->info['content_type'];
 201                 } else {
 202                         $this->contentType = '';
 203                 }
 204         }
 205
 206         /**
 207          * Gets the Curl Code
 208          *
 209          * @return string The Curl Code
 210          */
 211         public function getReturnCode()
 212         {
 213                 return $this->returnCode;
 214         }
 215
 216         /**
 217          * Returns the Curl Content Type
 218          *
 219          * @return string the Curl Content Type
 220          */
 221         public function getContentType()
 222         {
 223                 return $this->contentType;
 224         }
 225
 226         /**
 227          * Returns the Curl headers
 228          *
 229          * @return string the Curl headers
 230          */
 231         public function getHeader()
 232         {
 233                 return $this->header;
 234         }
 235
 236         /**
 237          * @return bool
 238          */
 239         public function isSuccess()
 240         {
 241                 return $this->isSuccess;
 242         }
 243
 244         /**
 245          * @return string
 246          */
 247         public function getUrl()
 248         {
 249                 return $this->url;
 250         }
 251
 252         /**
 253          * @return string
 254          */
 255         public function getRedirectUrl()
 256         {
 257                 return $this->redirectUrl;
 258         }
 259
 260         /**
 261          * @return string
 262          */
 263         public function getBody()
 264         {
 265                 return $this->body;
 266         }
 267
 268         /**
 269          * @return array
 270          */
 271         public function getInfo()
 272         {
 273                 return $this->info;
 274         }
 275
 276         /**
 277          * @return bool
 278          */
 279         public function isRedirectUrl()
 280         {
 281                 return $this->isRedirectUrl;
 282         }
 283
 284         /**
 285          * @return int
 286          */
 287         public function getErrorNumber()
 288         {
 289                 return $this->errorNumber;
 290         }
 291
 292         /**
 293          * @return string
 294          */
 295         public function getError()
 296         {
 297                 return $this->error;
 298         }
 299
 300         /**
 301          * @return bool
 302          */
 303         public function isTimeout()
 304         {
 305                 return $this->isTimeout;
 306         }
 307 }