runff 1.0 commit

lib/aws/Aws/Signature/S3SignatureV4.php

@@ -0,0 +1,68 @@
+<?php
+namespace Aws\Signature;
+
+use Aws\Credentials\CredentialsInterface;
+use Psr\Http\Message\RequestInterface;
+
+/**
+ * Amazon S3 signature version 4 support.
+ */
+class S3SignatureV4 extends SignatureV4
+{
+    /**
+     * Always add a x-amz-content-sha-256 for data integrity.
+     */
+    public function signRequest(
+        RequestInterface $request,
+        CredentialsInterface $credentials
+    ) {
+        if (!$request->hasHeader('x-amz-content-sha256')) {
+            $request = $request->withHeader(
+                'X-Amz-Content-Sha256',
+                $this->getPayload($request)
+            );
+        }
+
+        return parent::signRequest($request, $credentials);
+    }
+
+    /**
+     * Always add a x-amz-content-sha-256 for data integrity.
+     */
+    public function presign(
+        RequestInterface $request,
+        CredentialsInterface $credentials,
+        $expires,
+        array $options = []
+    ) {
+        if (!$request->hasHeader('x-amz-content-sha256')) {
+            $request = $request->withHeader(
+                'X-Amz-Content-Sha256',
+                $this->getPresignedPayload($request)
+            );
+        }
+
+        return parent::presign($request, $credentials, $expires, $options);
+    }
+
+    /**
+     * Override used to allow pre-signed URLs to be created for an
+     * in-determinate request payload.
+     */
+    protected function getPresignedPayload(RequestInterface $request)
+    {
+        return SignatureV4::UNSIGNED_PAYLOAD;
+    }
+
+    /**
+     * Amazon S3 does not double-encode the path component in the canonical request
+     */
+    protected function createCanonicalizedPath($path)
+    {
+        // Only remove one slash in case of keys that have a preceding slash
+        if (substr($path, 0, 1) === '/') {
+            $path = substr($path, 1);
+        }
+        return '/' . $path;
+    }
+}