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-rw-r--r--vendor/stripe/stripe-php/lib/WebhookSignature.php280
1 files changed, 140 insertions, 140 deletions
diff --git a/vendor/stripe/stripe-php/lib/WebhookSignature.php b/vendor/stripe/stripe-php/lib/WebhookSignature.php
index 46cbb28..bfd1dde 100644
--- a/vendor/stripe/stripe-php/lib/WebhookSignature.php
+++ b/vendor/stripe/stripe-php/lib/WebhookSignature.php
@@ -1,140 +1,140 @@
-<?php
-
-namespace Stripe;
-
-abstract class WebhookSignature
-{
- const EXPECTED_SCHEME = 'v1';
-
- /**
- * Verifies the signature header sent by Stripe. Throws an
- * Exception\SignatureVerificationException exception if the verification fails for
- * any reason.
- *
- * @param string $payload the payload sent by Stripe
- * @param string $header the contents of the signature header sent by
- * Stripe
- * @param string $secret secret used to generate the signature
- * @param int $tolerance maximum difference allowed between the header's
- * timestamp and the current time
- *
- * @throws Exception\SignatureVerificationException if the verification fails
- *
- * @return bool
- */
- public static function verifyHeader($payload, $header, $secret, $tolerance = null)
- {
- // Extract timestamp and signatures from header
- $timestamp = self::getTimestamp($header);
- $signatures = self::getSignatures($header, self::EXPECTED_SCHEME);
- if (-1 === $timestamp) {
- throw Exception\SignatureVerificationException::factory(
- 'Unable to extract timestamp and signatures from header',
- $payload,
- $header
- );
- }
- if (empty($signatures)) {
- throw Exception\SignatureVerificationException::factory(
- 'No signatures found with expected scheme',
- $payload,
- $header
- );
- }
-
- // Check if expected signature is found in list of signatures from
- // header
- $signedPayload = "{$timestamp}.{$payload}";
- $expectedSignature = self::computeSignature($signedPayload, $secret);
- $signatureFound = false;
- foreach ($signatures as $signature) {
- if (Util\Util::secureCompare($expectedSignature, $signature)) {
- $signatureFound = true;
-
- break;
- }
- }
- if (!$signatureFound) {
- throw Exception\SignatureVerificationException::factory(
- 'No signatures found matching the expected signature for payload',
- $payload,
- $header
- );
- }
-
- // Check if timestamp is within tolerance
- if (($tolerance > 0) && (\abs(\time() - $timestamp) > $tolerance)) {
- throw Exception\SignatureVerificationException::factory(
- 'Timestamp outside the tolerance zone',
- $payload,
- $header
- );
- }
-
- return true;
- }
-
- /**
- * Extracts the timestamp in a signature header.
- *
- * @param string $header the signature header
- *
- * @return int the timestamp contained in the header, or -1 if no valid
- * timestamp is found
- */
- private static function getTimestamp($header)
- {
- $items = \explode(',', $header);
-
- foreach ($items as $item) {
- $itemParts = \explode('=', $item, 2);
- if ('t' === $itemParts[0]) {
- if (!\is_numeric($itemParts[1])) {
- return -1;
- }
-
- return (int) ($itemParts[1]);
- }
- }
-
- return -1;
- }
-
- /**
- * Extracts the signatures matching a given scheme in a signature header.
- *
- * @param string $header the signature header
- * @param string $scheme the signature scheme to look for
- *
- * @return array the list of signatures matching the provided scheme
- */
- private static function getSignatures($header, $scheme)
- {
- $signatures = [];
- $items = \explode(',', $header);
-
- foreach ($items as $item) {
- $itemParts = \explode('=', $item, 2);
- if (\trim($itemParts[0]) === $scheme) {
- $signatures[] = $itemParts[1];
- }
- }
-
- return $signatures;
- }
-
- /**
- * Computes the signature for a given payload and secret.
- *
- * The current scheme used by Stripe ("v1") is HMAC/SHA-256.
- *
- * @param string $payload the payload to sign
- * @param string $secret the secret used to generate the signature
- *
- * @return string the signature as a string
- */
- private static function computeSignature($payload, $secret)
- {
- return \hash_hmac('sha256', $payload, $secret);
- }
-}
+<?php
+
+namespace Stripe;
+
+abstract class WebhookSignature
+{
+ const EXPECTED_SCHEME = 'v1';
+
+ /**
+ * Verifies the signature header sent by Stripe. Throws an
+ * Exception\SignatureVerificationException exception if the verification fails for
+ * any reason.
+ *
+ * @param string $payload the payload sent by Stripe
+ * @param string $header the contents of the signature header sent by
+ * Stripe
+ * @param string $secret secret used to generate the signature
+ * @param int $tolerance maximum difference allowed between the header's
+ * timestamp and the current time
+ *
+ * @throws Exception\SignatureVerificationException if the verification fails
+ *
+ * @return bool
+ */
+ public static function verifyHeader($payload, $header, $secret, $tolerance = null)
+ {
+ // Extract timestamp and signatures from header
+ $timestamp = self::getTimestamp($header);
+ $signatures = self::getSignatures($header, self::EXPECTED_SCHEME);
+ if (-1 === $timestamp) {
+ throw Exception\SignatureVerificationException::factory(
+ 'Unable to extract timestamp and signatures from header',
+ $payload,
+ $header
+ );
+ }
+ if (empty($signatures)) {
+ throw Exception\SignatureVerificationException::factory(
+ 'No signatures found with expected scheme',
+ $payload,
+ $header
+ );
+ }
+
+ // Check if expected signature is found in list of signatures from
+ // header
+ $signedPayload = "{$timestamp}.{$payload}";
+ $expectedSignature = self::computeSignature($signedPayload, $secret);
+ $signatureFound = false;
+ foreach ($signatures as $signature) {
+ if (Util\Util::secureCompare($expectedSignature, $signature)) {
+ $signatureFound = true;
+
+ break;
+ }
+ }
+ if (!$signatureFound) {
+ throw Exception\SignatureVerificationException::factory(
+ 'No signatures found matching the expected signature for payload',
+ $payload,
+ $header
+ );
+ }
+
+ // Check if timestamp is within tolerance
+ if (($tolerance > 0) && (\abs(\time() - $timestamp) > $tolerance)) {
+ throw Exception\SignatureVerificationException::factory(
+ 'Timestamp outside the tolerance zone',
+ $payload,
+ $header
+ );
+ }
+
+ return true;
+ }
+
+ /**
+ * Extracts the timestamp in a signature header.
+ *
+ * @param string $header the signature header
+ *
+ * @return int the timestamp contained in the header, or -1 if no valid
+ * timestamp is found
+ */
+ private static function getTimestamp($header)
+ {
+ $items = \explode(',', $header);
+
+ foreach ($items as $item) {
+ $itemParts = \explode('=', $item, 2);
+ if ('t' === $itemParts[0]) {
+ if (!\is_numeric($itemParts[1])) {
+ return -1;
+ }
+
+ return (int) ($itemParts[1]);
+ }
+ }
+
+ return -1;
+ }
+
+ /**
+ * Extracts the signatures matching a given scheme in a signature header.
+ *
+ * @param string $header the signature header
+ * @param string $scheme the signature scheme to look for
+ *
+ * @return array the list of signatures matching the provided scheme
+ */
+ private static function getSignatures($header, $scheme)
+ {
+ $signatures = [];
+ $items = \explode(',', $header);
+
+ foreach ($items as $item) {
+ $itemParts = \explode('=', $item, 2);
+ if (\trim($itemParts[0]) === $scheme) {
+ $signatures[] = $itemParts[1];
+ }
+ }
+
+ return $signatures;
+ }
+
+ /**
+ * Computes the signature for a given payload and secret.
+ *
+ * The current scheme used by Stripe ("v1") is HMAC/SHA-256.
+ *
+ * @param string $payload the payload to sign
+ * @param string $secret the secret used to generate the signature
+ *
+ * @return string the signature as a string
+ */
+ private static function computeSignature($payload, $secret)
+ {
+ return \hash_hmac('sha256', $payload, $secret);
+ }
+}