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ApiRequestor.php
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Created
Fri, Jan 3, 01:21

ApiRequestor.php
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<?php
class Stripe_ApiRequestor
{
public $apiKey;
public function __construct($apiKey=null)
{
$this->_apiKey = $apiKey;
}
public static function apiUrl($url='')
{
$apiBase = Stripe::$apiBase;
return "$apiBase$url";
}
public static function utf8($value)
{
if (is_string($value))
return utf8_encode($value);
else
return $value;
}
private static function _encodeObjects($d)
{
if ($d instanceof Stripe_ApiRequestor) {
return $d->id;
} else if ($d === true) {
return 'true';
} else if ($d === false) {
return 'false';
} else if (is_array($d)) {
$res = array();
foreach ($d as $k => $v)
$res[$k] = self::_encodeObjects($v);
return $res;
} else {
return $d;
}
}
public static function encode($d)
{
return http_build_query($d, null, '&');
}
public function request($meth, $url, $params=null)
{
if (!$params)
$params = array();
list($rbody, $rcode, $myApiKey) = $this->_requestRaw($meth, $url, $params);
$resp = $this->_interpretResponse($rbody, $rcode);
return array($resp, $myApiKey);
}
public function handleApiError($rbody, $rcode, $resp)
{
if (!is_array($resp) || !isset($resp['error']))
throw new Stripe_ApiError("Invalid response object from API: $rbody (HTTP response code was $rcode)", $rcode, $rbody, $resp);
$error = $resp['error'];
switch ($rcode) {
case 400:
case 404:
throw new Stripe_InvalidRequestError(isset($error['message']) ? $error['message'] : null,
isset($error['param']) ? $error['param'] : null,
$rcode, $rbody, $resp);
case 401:
throw new Stripe_AuthenticationError(isset($error['message']) ? $error['message'] : null, $rcode, $rbody, $resp);
case 402:
throw new Stripe_CardError(isset($error['message']) ? $error['message'] : null,
isset($error['param']) ? $error['param'] : null,
isset($error['code']) ? $error['code'] : null,
$rcode, $rbody, $resp);
default:
throw new Stripe_ApiError(isset($error['message']) ? $error['message'] : null, $rcode, $rbody, $resp);
}
}
private function _requestRaw($meth, $url, $params)
{
$myApiKey = $this->_apiKey;
if (!$myApiKey)
$myApiKey = Stripe::$apiKey;
if (!$myApiKey)
throw new Stripe_AuthenticationError('No API key provided. (HINT: set your API key using "Stripe::setApiKey(<API-KEY>)". You can generate API keys from the Stripe web interface. See https://stripe.com/api for details, or email support@stripe.com if you have any questions.');
$absUrl = $this->apiUrl($url);
$params = self::_encodeObjects($params);
$langVersion = phpversion();
$uname = php_uname();
$ua = array('bindings_version' => Stripe::VERSION,
'lang' => 'php',
'lang_version' => $langVersion,
'publisher' => 'stripe',
'uname' => $uname);
$headers = array('X-Stripe-Client-User-Agent: ' . json_encode($ua),
'User-Agent: Stripe/v1 PhpBindings/' . Stripe::VERSION);
list($rbody, $rcode) = $this->_curlRequest($meth, $absUrl, $headers, $params, $myApiKey);
return array($rbody, $rcode, $myApiKey);
}
private function _interpretResponse($rbody, $rcode)
{
try {
$resp = json_decode($rbody, true);
} catch (Exception $e) {
throw new Stripe_ApiError("Invalid response body from API: $rbody (HTTP response code was $rcode)", $rcode, $rbody);
}
if ($rcode < 200 || $rcode >= 300) {
$this->handleApiError($rbody, $rcode, $resp);
}
return $resp;
}
private function _curlRequest($meth, $absUrl, $headers, $params, $myApiKey)
{
$curl = curl_init();
$meth = strtolower($meth);
$opts = array();
if ($meth == 'get') {
$opts[CURLOPT_HTTPGET] = 1;
if (count($params) > 0) {
$encoded = self::encode($params);
$absUrl = "$absUrl?$encoded";
}
} else if ($meth == 'post') {
$opts[CURLOPT_POST] = 1;
$opts[CURLOPT_POSTFIELDS] = self::encode($params);
} else if ($meth == 'delete') {
$opts[CURLOPT_CUSTOMREQUEST] = 'DELETE';
if (count($params) > 0) {
$encoded = self::encode($params);
$absUrl = "$absUrl?$encoded";
}
} else {
throw new Stripe_ApiError("Unrecognized method $meth");
}
$absUrl = self::utf8($absUrl);
$opts[CURLOPT_URL] = $absUrl;
$opts[CURLOPT_RETURNTRANSFER] = true;
$opts[CURLOPT_CONNECTTIMEOUT] = 30;
$opts[CURLOPT_TIMEOUT] = 80;
$opts[CURLOPT_RETURNTRANSFER] = true;
$opts[CURLOPT_HTTPHEADER] = $headers;
$opts[CURLOPT_USERPWD] = $myApiKey . ':';
if (!Stripe::$verifySslCerts)
$opts[CURLOPT_SSL_VERIFYPEER] = false;
curl_setopt_array($curl, $opts);
$rbody = curl_exec($curl);
$errno = curl_errno($curl);
if ($errno == CURLE_SSL_CACERT || $errno == CURLE_SSL_PEER_CERTIFICATE) {
array_push($headers, 'X-Stripe-Client-Info: {"ca":"using Stripe-supplied CA bundle"}');
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
curl_setopt($curl, CURLOPT_CAINFO,
dirname(__FILE__) . '/../data/ca-certificates.crt');
$rbody = curl_exec($curl);
}
if ($rbody === false) {
$errno = curl_errno($curl);
$message = curl_error($curl);
curl_close($curl);
$this->handleCurlError($errno, $message);
}
$rcode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
curl_close($curl);
return array($rbody, $rcode);
}
public function handleCurlError($errno, $message)
{
$apiBase = Stripe::$apiBase;
switch ($errno) {
case CURLE_COULDNT_CONNECT:
case CURLE_COULDNT_RESOLVE_HOST:
case CURLE_OPERATION_TIMEOUTED:
$msg = "Could not connect to Stripe ($apiBase). Please check your internet connection and try again. If this problem persists, you should check Stripe's service status at https://twitter.com/stripestatus, or let us know at support@stripe.com.";
break;
case CURLE_SSL_CACERT:
case CURLE_SSL_PEER_CERTIFICATE:
$msg = "Could not verify Stripe's SSL certificate. Please make sure that your network is not intercepting certificates. (Try going to $apiBase in your browser.) If this problem persists, let us know at support@stripe.com.";
break;
default:
$msg = "Unexpected error communicating with Stripe. If this problem persists, let us know at support@stripe.com.";
}
$msg .= "\n\n(Network error: $message)";
throw new Stripe_ApiConnectionError($msg);
}
}

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