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179 lines
6.0 KiB
PHP
179 lines
6.0 KiB
PHP
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<?php
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namespace Stripe\Util;
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use Stripe\StripeObject;
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abstract class Util
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{
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private static $isMbstringAvailable = null;
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private static $isHashEqualsAvailable = null;
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/**
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* Whether the provided array (or other) is a list rather than a dictionary.
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*
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* @param array|mixed $array
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* @return boolean True if the given object is a list.
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*/
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public static function isList($array)
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{
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if (!is_array($array)) {
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return false;
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}
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// TODO: generally incorrect, but it's correct given Stripe's response
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foreach (array_keys($array) as $k) {
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if (!is_numeric($k)) {
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return false;
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}
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}
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return true;
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}
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/**
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* Recursively converts the PHP Stripe object to an array.
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*
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* @param array $values The PHP Stripe object to convert.
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* @return array
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*/
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public static function convertStripeObjectToArray($values)
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{
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$results = array();
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foreach ($values as $k => $v) {
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// FIXME: this is an encapsulation violation
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if ($k[0] == '_') {
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continue;
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}
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if ($v instanceof StripeObject) {
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$results[$k] = $v->__toArray(true);
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} elseif (is_array($v)) {
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$results[$k] = self::convertStripeObjectToArray($v);
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} else {
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$results[$k] = $v;
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}
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}
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return $results;
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}
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/**
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* Converts a response from the Stripe API to the corresponding PHP object.
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*
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* @param array $resp The response from the Stripe API.
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* @param array $opts
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* @return StripeObject|array
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*/
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public static function convertToStripeObject($resp, $opts)
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{
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$types = array(
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'account' => 'Stripe\\Account',
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'alipay_account' => 'Stripe\\AlipayAccount',
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'apple_pay_domain' => 'Stripe\\ApplePayDomain',
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'bank_account' => 'Stripe\\BankAccount',
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'balance_transaction' => 'Stripe\\BalanceTransaction',
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'card' => 'Stripe\\Card',
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'charge' => 'Stripe\\Charge',
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'country_spec' => 'Stripe\\CountrySpec',
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'coupon' => 'Stripe\\Coupon',
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'customer' => 'Stripe\\Customer',
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'dispute' => 'Stripe\\Dispute',
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'ephemeral_key' => 'Stripe\\EphemeralKey',
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'list' => 'Stripe\\Collection',
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'login_link' => 'Stripe\\LoginLink',
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'invoice' => 'Stripe\\Invoice',
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'invoiceitem' => 'Stripe\\InvoiceItem',
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'event' => 'Stripe\\Event',
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'file' => 'Stripe\\FileUpload',
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'token' => 'Stripe\\Token',
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'transfer' => 'Stripe\\Transfer',
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'transfer_reversal' => 'Stripe\\TransferReversal',
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'order' => 'Stripe\\Order',
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'order_return' => 'Stripe\\OrderReturn',
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'payout' => 'Stripe\\Payout',
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'plan' => 'Stripe\\Plan',
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'product' => 'Stripe\\Product',
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'recipient' => 'Stripe\\Recipient',
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'recipient_transfer' => 'Stripe\\RecipientTransfer',
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'refund' => 'Stripe\\Refund',
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'sku' => 'Stripe\\SKU',
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'source' => 'Stripe\\Source',
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'subscription' => 'Stripe\\Subscription',
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'subscription_item' => 'Stripe\\SubscriptionItem',
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'three_d_secure' => 'Stripe\\ThreeDSecure',
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'fee_refund' => 'Stripe\\ApplicationFeeRefund',
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'bitcoin_receiver' => 'Stripe\\BitcoinReceiver',
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'bitcoin_transaction' => 'Stripe\\BitcoinTransaction',
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);
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if (self::isList($resp)) {
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$mapped = array();
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foreach ($resp as $i) {
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array_push($mapped, self::convertToStripeObject($i, $opts));
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}
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return $mapped;
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} elseif (is_array($resp)) {
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if (isset($resp['object']) && is_string($resp['object']) && isset($types[$resp['object']])) {
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$class = $types[$resp['object']];
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} else {
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$class = 'Stripe\\StripeObject';
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}
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return $class::constructFrom($resp, $opts);
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} else {
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return $resp;
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}
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}
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/**
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* @param string|mixed $value A string to UTF8-encode.
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*
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* @return string|mixed The UTF8-encoded string, or the object passed in if
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* it wasn't a string.
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*/
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public static function utf8($value)
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{
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if (self::$isMbstringAvailable === null) {
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self::$isMbstringAvailable = function_exists('mb_detect_encoding');
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if (!self::$isMbstringAvailable) {
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trigger_error("It looks like the mbstring extension is not enabled. " .
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"UTF-8 strings will not properly be encoded. Ask your system " .
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"administrator to enable the mbstring extension, or write to " .
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"support@stripe.com if you have any questions.", E_USER_WARNING);
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}
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}
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if (is_string($value) && self::$isMbstringAvailable && mb_detect_encoding($value, "UTF-8", true) != "UTF-8") {
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return utf8_encode($value);
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} else {
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return $value;
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}
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}
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/**
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* Compares two strings for equality. The time taken is independent of the
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* number of characters that match.
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*
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* @param string $a one of the strings to compare.
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* @param string $b the other string to compare.
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* @return bool true if the strings are equal, false otherwise.
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*/
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public static function secureCompare($a, $b)
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{
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if (self::$isHashEqualsAvailable === null) {
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self::$isHashEqualsAvailable = function_exists('hash_equals');
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}
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if (self::$isHashEqualsAvailable) {
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return hash_equals($a, $b);
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} else {
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if (strlen($a) != strlen($b)) {
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return false;
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}
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$result = 0;
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for ($i = 0; $i < strlen($a); $i++) {
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$result |= ord($a[$i]) ^ ord($b[$i]);
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}
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return ($result == 0);
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}
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}
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}
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