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<?php
namespace p3k;
class HTTPCurl {
public $timeout = 4;
public $max_redirects = 8;
public function get($url) {
$ch = curl_init($url);
$this->_set_curlopts($ch, $url);
$response = curl_exec($ch);
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
return array(
'code' => curl_getinfo($ch, CURLINFO_HTTP_CODE),
'headers' => self::parse_headers(trim(substr($response, 0, $header_size))),
'body' => substr($response, $header_size),
'error' => self::error_string_from_code(curl_errno($ch)),
'error_description' => curl_error($ch),
'error_code' => curl_errno($ch),
);
}
public function post($url, $body, $headers=array()) {
$ch = curl_init($url);
$this->_set_curlopts($ch, $url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$response = curl_exec($ch);
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
return array(
'code' => curl_getinfo($ch, CURLINFO_HTTP_CODE),
'headers' => self::parse_headers(trim(substr($response, 0, $header_size))),
'body' => substr($response, $header_size),
'error' => self::error_string_from_code(curl_errno($ch)),
'error_description' => curl_error($ch),
'error_code' => curl_errno($ch),
);
}
public function head($url) {
$ch = curl_init($url);
$this->_set_curlopts($ch, $url);
curl_setopt($ch, CURLOPT_NOBODY, true);
$response = curl_exec($ch);
return array(
'code' => curl_getinfo($ch, CURLINFO_HTTP_CODE),
'headers' => self::parse_headers(trim($response)),
'error' => self::error_string_from_code(curl_errno($ch)),
'error_description' => curl_error($ch),
'error_code' => curl_errno($ch),
);
}
private function _set_curlopts($ch, $url) {
$host = parse_url($url, PHP_URL_HOST);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, true);
// Special-case appspot.com URLs to not follow redirects.
// https://cloud.google.com/appengine/docs/php/urlfetch/
if(substr($host, -12) == '.appspot.com') {
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
} else {
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_MAXREDIRS, $this->max_redirects);
}
curl_setopt($ch, CURLOPT_TIMEOUT_MS, round($this->timeout * 1000));
}
public static function error_string_from_code($code) {
switch($code) {
case 0:
return '';
case CURLE_COULDNT_RESOLVE_HOST:
return 'dns_error';
case CURLE_COULDNT_CONNECT:
return 'connect_error';
case CURLE_OPERATION_TIMEDOUT:
return 'timeout';
case CURLE_SSL_CONNECT_ERROR:
return 'ssl_error';
case CURLE_SSL_CERTPROBLEM:
return 'ssl_cert_error';
case CURLE_SSL_CIPHER:
return 'ssl_unsupported_cipher';
case CURLE_SSL_CACERT:
return 'ssl_cert_error';
case CURLE_TOO_MANY_REDIRECTS:
return 'too_many_redirects';
default:
return 'unknown';
}
}
public static function parse_headers($headers) {
$retVal = array();
$fields = explode("\r\n", preg_replace('/\x0D\x0A[\x09\x20]+/', ' ', $headers));
foreach($fields as $field) {
if(preg_match('/([^:]+): (.+)/m', $field, $match)) {
$match[1] = preg_replace_callback('/(?<=^|[\x09\x20\x2D])./', function($m) {
return strtoupper($m[0]);
}, strtolower(trim($match[1])));
// If there's already a value set for the header name being returned, turn it into an array and add the new value
$match[1] = preg_replace_callback('/(?<=^|[\x09\x20\x2D])./', function($m) {
return strtoupper($m[0]);
}, strtolower(trim($match[1])));
if(isset($retVal[$match[1]])) {
if(!is_array($retVal[$match[1]]))
$retVal[$match[1]] = array($retVal[$match[1]]);
$retVal[$match[1]][] = $match[2];
} else {
$retVal[$match[1]] = trim($match[2]);
}
}
}
return $retVal;
}
}