Lesson 35 - Get Compute Auth Token Working

Plugins/GameLiftPlugin/Source/AWSSDK/Include/aws/crt/auth/Signing.h

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+#pragma once
+/**
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0.
+ */
+
+#include <aws/crt/Exports.h>
+
+#include <aws/auth/signing_config.h>
+
+#include <functional>
+#include <memory>
+
+namespace Aws
+{
+    namespace Crt
+    {
+        namespace Http
+        {
+            class HttpRequest;
+        }
+
+        namespace Auth
+        {
+            /**
+             * RTTI indicator for signing configuration.  We currently only support a single type (AWS), but
+             * we could expand to others in the future if needed.
+             */
+            enum class SigningConfigType
+            {
+                Aws = AWS_SIGNING_CONFIG_AWS
+            };
+
+            /**
+             * HTTP signing callback.  The second parameter is an aws error code,  The signing was successful
+             * if the error code is AWS_ERROR_SUCCESS.
+             */
+            using OnHttpRequestSigningComplete =
+                std::function<void(const std::shared_ptr<Aws::Crt::Http::HttpRequest> &, int)>;
+
+            /**
+             * Base class for all different signing configurations.  Type functions as a
+             * primitive RTTI for downcasting.
+             */
+            class AWS_CRT_CPP_API ISigningConfig
+            {
+              public:
+                ISigningConfig() = default;
+                ISigningConfig(const ISigningConfig &) = delete;
+                ISigningConfig(ISigningConfig &&) = delete;
+                ISigningConfig &operator=(const ISigningConfig &) = delete;
+                ISigningConfig &operator=(ISigningConfig &&) = delete;
+
+                virtual ~ISigningConfig() = default;
+
+                /**
+                 * RTTI query for the SigningConfig hierarchy
+                 * @return the type of signing configuration
+                 */
+                virtual SigningConfigType GetType(void) const = 0;
+            };
+
+            /**
+             * Abstract base for all http request signers.  Asynchronous interface.  Intended to
+             * be a tight wrapper around aws-c-* signer implementations.
+             */
+            class AWS_CRT_CPP_API IHttpRequestSigner
+            {
+              public:
+                IHttpRequestSigner() = default;
+                IHttpRequestSigner(const IHttpRequestSigner &) = delete;
+                IHttpRequestSigner(IHttpRequestSigner &&) = delete;
+                IHttpRequestSigner &operator=(const IHttpRequestSigner &) = delete;
+                IHttpRequestSigner &operator=(IHttpRequestSigner &&) = delete;
+
+                virtual ~IHttpRequestSigner() = default;
+
+                /**
+                 * Signs an http request based on the signing implementation and supplied configuration
+                 * @param request http request to sign
+                 * @param config base signing configuration.  Actual type should match the configuration expected
+                 * by the signer implementation
+                 * @param completionCallback completion function to invoke when signing has completed or failed
+                 * @return true if the signing process was kicked off, false if there was a synchronous failure.
+                 */
+                virtual bool SignRequest(
+                    const std::shared_ptr<Aws::Crt::Http::HttpRequest> &request,
+                    const ISigningConfig &config,
+                    const OnHttpRequestSigningComplete &completionCallback) = 0;
+
+                /**
+                 * @return Whether or not the signer is in a valid state
+                 */
+                virtual bool IsValid() const = 0;
+            };
+
+        } // namespace Auth
+    } // namespace Crt
+} // namespace Aws