Credentials.h

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#pragma once
 
#include <aws/crt/Exports.h>
#include <aws/crt/Types.h>
#include <aws/crt/http/HttpConnection.h>
#include <aws/crt/io/TlsOptions.h>
 
#include <chrono>
#include <functional>
 
struct aws_credentials;
struct aws_credentials_provider;
 
namespace Aws
{
    namespace Crt
    {
        namespace Io
        {
            class ClientBootstrap;
        }
 
        namespace Http
        {
            class HttpClientConnectionProxyOptions;
        }
 
        namespace Auth
        {
            class AWS_CRT_CPP_API Credentials
            {
              public:
                Credentials(const aws_credentials *credentials) noexcept;
                Credentials(
                    ByteCursor access_key_id,
                    ByteCursor secret_access_key,
                    ByteCursor session_token,
                    uint64_t expiration_timepoint_in_seconds,
                    Allocator *allocator = ApiAllocator()) noexcept;
 
                Credentials(Allocator *allocator = ApiAllocator()) noexcept;
 
                ~Credentials();
 
                Credentials(const Credentials &) = delete;
                Credentials(Credentials &&) = delete;
                Credentials &operator=(const Credentials &) = delete;
                Credentials &operator=(Credentials &&) = delete;
 
                ByteCursor GetAccessKeyId() const noexcept;
 
                ByteCursor GetSecretAccessKey() const noexcept;
 
                ByteCursor GetSessionToken() const noexcept;
 
                uint64_t GetExpirationTimepointInSeconds() const noexcept;
 
                explicit operator bool() const noexcept;
 
                const aws_credentials *GetUnderlyingHandle() const noexcept { return m_credentials; }
 
              private:
                const aws_credentials *m_credentials;
            };
 
            using OnCredentialsResolved = std::function<void(std::shared_ptr<Credentials>, int errorCode)>;
 
            using GetCredentialsHandler = std::function<std::shared_ptr<Credentials>()>;
 
            class AWS_CRT_CPP_API ICredentialsProvider : public std::enable_shared_from_this<ICredentialsProvider>
            {
              public:
                virtual ~ICredentialsProvider() = default;
 
                virtual bool GetCredentials(const OnCredentialsResolved &onCredentialsResolved) const = 0;
 
                virtual aws_credentials_provider *GetUnderlyingHandle() const noexcept = 0;
 
                virtual bool IsValid() const noexcept = 0;
            };
 
            struct AWS_CRT_CPP_API CredentialsProviderStaticConfig
            {
                CredentialsProviderStaticConfig()
                {
                    AWS_ZERO_STRUCT(AccessKeyId);
                    AWS_ZERO_STRUCT(SecretAccessKey);
                    AWS_ZERO_STRUCT(SessionToken);
                }
 
                ByteCursor AccessKeyId;
 
                ByteCursor SecretAccessKey;
 
                ByteCursor SessionToken;
            };
 
            struct AWS_CRT_CPP_API CredentialsProviderProfileConfig
            {
                CredentialsProviderProfileConfig() : Bootstrap(nullptr), TlsContext(nullptr)
                {
                    AWS_ZERO_STRUCT(ProfileNameOverride);
                    AWS_ZERO_STRUCT(ConfigFileNameOverride);
                    AWS_ZERO_STRUCT(CredentialsFileNameOverride);
                }
 
                ByteCursor ProfileNameOverride;
 
                ByteCursor ConfigFileNameOverride;
 
                ByteCursor CredentialsFileNameOverride;
 
                Io::ClientBootstrap *Bootstrap;
 
                Io::TlsContext *TlsContext;
            };
 
            struct AWS_CRT_CPP_API CredentialsProviderImdsConfig
            {
                CredentialsProviderImdsConfig() : Bootstrap(nullptr) {}
 
                Io::ClientBootstrap *Bootstrap;
            };
 
            struct AWS_CRT_CPP_API CredentialsProviderChainConfig
            {
                CredentialsProviderChainConfig() : Providers() {}
 
                Vector<std::shared_ptr<ICredentialsProvider>> Providers;
            };
 
            struct AWS_CRT_CPP_API CredentialsProviderCachedConfig
            {
                CredentialsProviderCachedConfig() : Provider(), CachedCredentialTTL() {}
 
                std::shared_ptr<ICredentialsProvider> Provider;
 
                std::chrono::milliseconds CachedCredentialTTL;
            };
 
            struct AWS_CRT_CPP_API CredentialsProviderChainDefaultConfig
            {
                CredentialsProviderChainDefaultConfig() : Bootstrap(nullptr), TlsContext(nullptr) {}
 
                Io::ClientBootstrap *Bootstrap;
 
                Io::TlsContext *TlsContext;
            };
 
            struct AWS_CRT_CPP_API CredentialsProviderX509Config
            {
                CredentialsProviderX509Config()
                    : Bootstrap(nullptr), TlsOptions(), ThingName(), RoleAlias(), Endpoint(), ProxyOptions()
                {
                }
 
                Io::ClientBootstrap *Bootstrap;
 
                /* TLS connection options that have been initialized with your x509 certificate and private key */
                Io::TlsConnectionOptions TlsOptions;
 
                /* IoT thing name you registered with AWS IOT for your device, it will be used in http request header */
                String ThingName;
 
                /* Iot role alias you created with AWS IoT for your IAM role, it will be used in http request path */
                String RoleAlias;
 
                String Endpoint;
 
                Optional<Http::HttpClientConnectionProxyOptions> ProxyOptions;
            };
 
            struct AWS_CRT_CPP_API CredentialsProviderDelegateConfig
            {
                /* handler to provider credentials */
                GetCredentialsHandler Handler;
            };
 
            struct AWS_CRT_CPP_API CognitoLoginPair
            {
 
                String IdentityProviderName;
 
                String IdentityProviderToken;
            };
 
            struct AWS_CRT_CPP_API CredentialsProviderCognitoConfig
            {
                CredentialsProviderCognitoConfig();
 
                String Endpoint;
 
                String Identity;
 
                Optional<Vector<CognitoLoginPair>> Logins;
 
                Optional<String> CustomRoleArn;
 
                Io::ClientBootstrap *Bootstrap;
 
                Io::TlsContext TlsCtx;
 
                Optional<Http::HttpClientConnectionProxyOptions> ProxyOptions;
            };
 
            struct AWS_CRT_CPP_API CredentialsProviderSTSConfig
            {
                CredentialsProviderSTSConfig();
 
                std::shared_ptr<ICredentialsProvider> Provider;
 
                String RoleArn;
 
                String SessionName;
 
                uint16_t DurationSeconds;
 
                Io::ClientBootstrap *Bootstrap;
 
                Io::TlsContext TlsCtx;
 
                Optional<Http::HttpClientConnectionProxyOptions> ProxyOptions;
            };
 
            class AWS_CRT_CPP_API CredentialsProvider : public ICredentialsProvider
            {
              public:
                CredentialsProvider(aws_credentials_provider *provider, Allocator *allocator = ApiAllocator()) noexcept;
 
                virtual ~CredentialsProvider();
 
                CredentialsProvider(const CredentialsProvider &) = delete;
                CredentialsProvider(CredentialsProvider &&) = delete;
                CredentialsProvider &operator=(const CredentialsProvider &) = delete;
                CredentialsProvider &operator=(CredentialsProvider &&) = delete;
 
                virtual bool GetCredentials(const OnCredentialsResolved &onCredentialsResolved) const override;
 
                virtual aws_credentials_provider *GetUnderlyingHandle() const noexcept override { return m_provider; }
 
                virtual bool IsValid() const noexcept override { return m_provider != nullptr; }
 
                /*
                 * Factory methods for all of the basic credentials provider types
                 */
 
                static std::shared_ptr<ICredentialsProvider> CreateCredentialsProviderStatic(
                    const CredentialsProviderStaticConfig &config,
                    Allocator *allocator = ApiAllocator());
 
                static std::shared_ptr<ICredentialsProvider> CreateCredentialsProviderAnonymous(
                    Allocator *allocator = ApiAllocator());
 
                static std::shared_ptr<ICredentialsProvider> CreateCredentialsProviderEnvironment(
                    Allocator *allocator = ApiAllocator());
 
                static std::shared_ptr<ICredentialsProvider> CreateCredentialsProviderProfile(
                    const CredentialsProviderProfileConfig &config,
                    Allocator *allocator = ApiAllocator());
 
                static std::shared_ptr<ICredentialsProvider> CreateCredentialsProviderImds(
                    const CredentialsProviderImdsConfig &config,
                    Allocator *allocator = ApiAllocator());
 
                static std::shared_ptr<ICredentialsProvider> CreateCredentialsProviderChain(
                    const CredentialsProviderChainConfig &config,
                    Allocator *allocator = ApiAllocator());
 
                /*
                 * Creates a provider that puts a simple time-based cache in front of its queries
                 * to a subordinate provider.
                 */
                static std::shared_ptr<ICredentialsProvider> CreateCredentialsProviderCached(
                    const CredentialsProviderCachedConfig &config,
                    Allocator *allocator = ApiAllocator());
 
                static std::shared_ptr<ICredentialsProvider> CreateCredentialsProviderChainDefault(
                    const CredentialsProviderChainDefaultConfig &config,
                    Allocator *allocator = ApiAllocator());
 
                static std::shared_ptr<ICredentialsProvider> CreateCredentialsProviderX509(
                    const CredentialsProviderX509Config &config,
                    Allocator *allocator = ApiAllocator());
 
                static std::shared_ptr<ICredentialsProvider> CreateCredentialsProviderDelegate(
                    const CredentialsProviderDelegateConfig &config,
                    Allocator *allocator = ApiAllocator());
 
                static std::shared_ptr<ICredentialsProvider> CreateCredentialsProviderCognito(
                    const CredentialsProviderCognitoConfig &config,
                    Allocator *allocator = ApiAllocator());
 
                static std::shared_ptr<ICredentialsProvider> CreateCredentialsProviderSTS(
                    const CredentialsProviderSTSConfig &config,
                    Allocator *allocator = ApiAllocator());
 
              private:
                static void s_onCredentialsResolved(aws_credentials *credentials, int error_code, void *user_data);
 
                Allocator *m_allocator;
                aws_credentials_provider *m_provider;
            };
        } // namespace Auth
    } // namespace Crt
} // namespace Aws