// Code generated by smithy-go-codegen DO NOT EDIT.

package s3

import (
	"context"
	"github.com/aws/aws-sdk-go-v2/aws/signer/v4"
	internalChecksum "github.com/aws/aws-sdk-go-v2/service/internal/checksum"
	s3cust "github.com/aws/aws-sdk-go-v2/service/s3/internal/customizations"
	"github.com/aws/aws-sdk-go-v2/service/s3/types"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
	"io"
	"time"
)

// Retrieves an object from Amazon S3.
//
// In the GetObject request, specify the full key name for the object.
//
// General purpose buckets - Both the virtual-hosted-style requests and the
// path-style requests are supported. For a virtual hosted-style request example,
// if you have the object photos/2006/February/sample.jpg , specify the object key
// name as /photos/2006/February/sample.jpg . For a path-style request example, if
// you have the object photos/2006/February/sample.jpg in the bucket named
// examplebucket , specify the object key name as
// /examplebucket/photos/2006/February/sample.jpg . For more information about
// request types, see [HTTP Host Header Bucket Specification]in the Amazon S3 User Guide.
//
// Directory buckets - Only virtual-hosted-style requests are supported. For a
// virtual hosted-style request example, if you have the object
// photos/2006/February/sample.jpg in the bucket named
// amzn-s3-demo-bucket--usw2-az1--x-s3 , specify the object key name as
// /photos/2006/February/sample.jpg . Also, when you make requests to this API
// operation, your requests are sent to the Zonal endpoint. These endpoints support
// virtual-hosted-style requests in the format
// https://bucket-name.s3express-zone-id.region-code.amazonaws.com/key-name .
// Path-style requests are not supported. For more information about endpoints in
// Availability Zones, see [Regional and Zonal endpoints for directory buckets in Availability Zones]in the Amazon S3 User Guide. For more information about
// endpoints in Local Zones, see [Concepts for directory buckets in Local Zones]in the Amazon S3 User Guide.
//
// Permissions
//   - General purpose bucket permissions - You must have the required permissions
//     in a policy. To use GetObject , you must have the READ access to the object
//     (or version). If you grant READ access to the anonymous user, the GetObject
//     operation returns the object without using an authorization header. For more
//     information, see [Specifying permissions in a policy]in the Amazon S3 User Guide.
//
// If you include a versionId in your request header, you must have the
//
//	s3:GetObjectVersion permission to access a specific version of an object. The
//	s3:GetObject permission is not required in this scenario.
//
// If you request the current version of an object without a specific versionId in
//
//	the request header, only the s3:GetObject permission is required. The
//	s3:GetObjectVersion permission is not required in this scenario.
//
// If the object that you request doesn’t exist, the error that Amazon S3 returns
//
//	depends on whether you also have the s3:ListBucket permission.
//
//	- If you have the s3:ListBucket permission on the bucket, Amazon S3 returns an
//	HTTP status code 404 Not Found error.
//
//	- If you don’t have the s3:ListBucket permission, Amazon S3 returns an HTTP
//	status code 403 Access Denied error.
//
//	- Directory bucket permissions - To grant access to this API operation on a
//	directory bucket, we recommend that you use the [CreateSession]CreateSession API operation
//	for session-based authorization. Specifically, you grant the
//	s3express:CreateSession permission to the directory bucket in a bucket policy
//	or an IAM identity-based policy. Then, you make the CreateSession API call on
//	the bucket to obtain a session token. With the session token in your request
//	header, you can make API requests to this operation. After the session token
//	expires, you make another CreateSession API call to generate a new session
//	token for use. Amazon Web Services CLI or SDKs create session and refresh the
//	session token automatically to avoid service interruptions when a session
//	expires. For more information about authorization, see [CreateSession]CreateSession .
//
// If the object is encrypted using SSE-KMS, you must also have the
//
//	kms:GenerateDataKey and kms:Decrypt permissions in IAM identity-based policies
//	and KMS key policies for the KMS key.
//
// Storage classes If the object you are retrieving is stored in the S3 Glacier
// Flexible Retrieval storage class, the S3 Glacier Deep Archive storage class, the
// S3 Intelligent-Tiering Archive Access tier, or the S3 Intelligent-Tiering Deep
// Archive Access tier, before you can retrieve the object you must first restore a
// copy using [RestoreObject]. Otherwise, this operation returns an InvalidObjectState error. For
// information about restoring archived objects, see [Restoring Archived Objects]in the Amazon S3 User Guide.
//
// Directory buckets - Directory buckets only support EXPRESS_ONEZONE (the S3
// Express One Zone storage class) in Availability Zones and ONEZONE_IA (the S3
// One Zone-Infrequent Access storage class) in Dedicated Local Zones. Unsupported
// storage class values won't write a destination object and will respond with the
// HTTP status code 400 Bad Request .
//
// Encryption Encryption request headers, like x-amz-server-side-encryption ,
// should not be sent for the GetObject requests, if your object uses server-side
// encryption with Amazon S3 managed encryption keys (SSE-S3), server-side
// encryption with Key Management Service (KMS) keys (SSE-KMS), or dual-layer
// server-side encryption with Amazon Web Services KMS keys (DSSE-KMS). If you
// include the header in your GetObject requests for the object that uses these
// types of keys, you’ll get an HTTP 400 Bad Request error.
//
// Directory buckets - For directory buckets, there are only two supported options
// for server-side encryption: SSE-S3 and SSE-KMS. SSE-C isn't supported. For more
// information, see [Protecting data with server-side encryption]in the Amazon S3 User Guide.
//
// Overriding response header values through the request There are times when you
// want to override certain response header values of a GetObject response. For
// example, you might override the Content-Disposition response header value
// through your GetObject request.
//
// You can override values for a set of response headers. These modified response
// header values are included only in a successful response, that is, when the HTTP
// status code 200 OK is returned. The headers you can override using the
// following query parameters in the request are a subset of the headers that
// Amazon S3 accepts when you create an object.
//
// The response headers that you can override for the GetObject response are
// Cache-Control , Content-Disposition , Content-Encoding , Content-Language ,
// Content-Type , and Expires .
//
// To override values for a set of response headers in the GetObject response, you
// can use the following query parameters in the request.
//
//   - response-cache-control
//
//   - response-content-disposition
//
//   - response-content-encoding
//
//   - response-content-language
//
//   - response-content-type
//
//   - response-expires
//
// When you use these parameters, you must sign the request by using either an
// Authorization header or a presigned URL. These parameters cannot be used with an
// unsigned (anonymous) request.
//
// HTTP Host header syntax  Directory buckets - The HTTP Host header syntax is
// Bucket-name.s3express-zone-id.region-code.amazonaws.com .
//
// The following operations are related to GetObject :
//
// [ListBuckets]
//
// [GetObjectAcl]
//
// You must URL encode any signed header values that contain spaces. For example,
// if your header value is my file.txt , containing two spaces after my , you must
// URL encode this value to my%20%20file.txt .
//
// [Concepts for directory buckets in Local Zones]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/s3-lzs-for-directory-buckets.html
// [RestoreObject]: https://docs.aws.amazon.com/AmazonS3/latest/API/API_RestoreObject.html
// [Protecting data with server-side encryption]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/s3-express-serv-side-encryption.html
// [ListBuckets]: https://docs.aws.amazon.com/AmazonS3/latest/API/API_ListBuckets.html
// [HTTP Host Header Bucket Specification]: https://docs.aws.amazon.com/AmazonS3/latest/dev/VirtualHosting.html#VirtualHostingSpecifyBucket
// [Restoring Archived Objects]: https://docs.aws.amazon.com/AmazonS3/latest/dev/restoring-objects.html
// [GetObjectAcl]: https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetObjectAcl.html
// [Specifying permissions in a policy]: https://docs.aws.amazon.com/AmazonS3/latest/dev/using-with-s3-actions.html
// [Regional and Zonal endpoints for directory buckets in Availability Zones]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/endpoint-directory-buckets-AZ.html
//
// [CreateSession]: https://docs.aws.amazon.com/AmazonS3/latest/API/API_CreateSession.html
func (c *Client) GetObject(ctx context.Context, params *GetObjectInput, optFns ...func(*Options)) (*GetObjectOutput, error) {
	if params == nil {
		params = &GetObjectInput{}
	}

	result, metadata, err := c.invokeOperation(ctx, "GetObject", params, optFns, c.addOperationGetObjectMiddlewares)
	if err != nil {
		return nil, err
	}

	out := result.(*GetObjectOutput)
	out.ResultMetadata = metadata
	return out, nil
}

type GetObjectInput struct {

	// The bucket name containing the object.
	//
	// Directory buckets - When you use this operation with a directory bucket, you
	// must use virtual-hosted-style requests in the format
	// Bucket-name.s3express-zone-id.region-code.amazonaws.com . Path-style requests
	// are not supported. Directory bucket names must be unique in the chosen Zone
	// (Availability Zone or Local Zone). Bucket names must follow the format
	// bucket-base-name--zone-id--x-s3 (for example,
	// amzn-s3-demo-bucket--usw2-az1--x-s3 ). For information about bucket naming
	// restrictions, see [Directory bucket naming rules]in the Amazon S3 User Guide.
	//
	// Access points - When you use this action with an access point for general
	// purpose buckets, you must provide the alias of the access point in place of the
	// bucket name or specify the access point ARN. When you use this action with an
	// access point for directory buckets, you must provide the access point name in
	// place of the bucket name. When using the access point ARN, you must direct
	// requests to the access point hostname. The access point hostname takes the form
	// AccessPointName-AccountId.s3-accesspoint.Region.amazonaws.com. When using this
	// action with an access point through the Amazon Web Services SDKs, you provide
	// the access point ARN in place of the bucket name. For more information about
	// access point ARNs, see [Using access points]in the Amazon S3 User Guide.
	//
	// Object Lambda access points - When you use this action with an Object Lambda
	// access point, you must direct requests to the Object Lambda access point
	// hostname. The Object Lambda access point hostname takes the form
	// AccessPointName-AccountId.s3-object-lambda.Region.amazonaws.com.
	//
	// Object Lambda access points are not supported by directory buckets.
	//
	// S3 on Outposts - When you use this action with S3 on Outposts, you must direct
	// requests to the S3 on Outposts hostname. The S3 on Outposts hostname takes the
	// form AccessPointName-AccountId.outpostID.s3-outposts.Region.amazonaws.com . When
	// you use this action with S3 on Outposts, the destination bucket must be the
	// Outposts access point ARN or the access point alias. For more information about
	// S3 on Outposts, see [What is S3 on Outposts?]in the Amazon S3 User Guide.
	//
	// [Directory bucket naming rules]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/directory-bucket-naming-rules.html
	// [What is S3 on Outposts?]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/S3onOutposts.html
	// [Using access points]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/using-access-points.html
	//
	// This member is required.
	Bucket *string

	// Key of the object to get.
	//
	// This member is required.
	Key *string

	// To retrieve the checksum, this mode must be enabled.
	ChecksumMode types.ChecksumMode

	// The account ID of the expected bucket owner. If the account ID that you provide
	// does not match the actual owner of the bucket, the request fails with the HTTP
	// status code 403 Forbidden (access denied).
	ExpectedBucketOwner *string

	// Return the object only if its entity tag (ETag) is the same as the one
	// specified in this header; otherwise, return a 412 Precondition Failed error.
	//
	// If both of the If-Match and If-Unmodified-Since headers are present in the
	// request as follows: If-Match condition evaluates to true , and;
	// If-Unmodified-Since condition evaluates to false ; then, S3 returns 200 OK and
	// the data requested.
	//
	// For more information about conditional requests, see [RFC 7232].
	//
	// [RFC 7232]: https://tools.ietf.org/html/rfc7232
	IfMatch *string

	// Return the object only if it has been modified since the specified time;
	// otherwise, return a 304 Not Modified error.
	//
	// If both of the If-None-Match and If-Modified-Since headers are present in the
	// request as follows: If-None-Match condition evaluates to false , and;
	// If-Modified-Since condition evaluates to true ; then, S3 returns 304 Not
	// Modified status code.
	//
	// For more information about conditional requests, see [RFC 7232].
	//
	// [RFC 7232]: https://tools.ietf.org/html/rfc7232
	IfModifiedSince *time.Time

	// Return the object only if its entity tag (ETag) is different from the one
	// specified in this header; otherwise, return a 304 Not Modified error.
	//
	// If both of the If-None-Match and If-Modified-Since headers are present in the
	// request as follows: If-None-Match condition evaluates to false , and;
	// If-Modified-Since condition evaluates to true ; then, S3 returns 304 Not
	// Modified HTTP status code.
	//
	// For more information about conditional requests, see [RFC 7232].
	//
	// [RFC 7232]: https://tools.ietf.org/html/rfc7232
	IfNoneMatch *string

	// Return the object only if it has not been modified since the specified time;
	// otherwise, return a 412 Precondition Failed error.
	//
	// If both of the If-Match and If-Unmodified-Since headers are present in the
	// request as follows: If-Match condition evaluates to true , and;
	// If-Unmodified-Since condition evaluates to false ; then, S3 returns 200 OK and
	// the data requested.
	//
	// For more information about conditional requests, see [RFC 7232].
	//
	// [RFC 7232]: https://tools.ietf.org/html/rfc7232
	IfUnmodifiedSince *time.Time

	// Part number of the object being read. This is a positive integer between 1 and
	// 10,000. Effectively performs a 'ranged' GET request for the part specified.
	// Useful for downloading just a part of an object.
	PartNumber *int32

	// Downloads the specified byte range of an object. For more information about the
	// HTTP Range header, see [https://www.rfc-editor.org/rfc/rfc9110.html#name-range].
	//
	// Amazon S3 doesn't support retrieving multiple ranges of data per GET request.
	//
	// [https://www.rfc-editor.org/rfc/rfc9110.html#name-range]: https://www.rfc-editor.org/rfc/rfc9110.html#name-range
	Range *string

	// Confirms that the requester knows that they will be charged for the request.
	// Bucket owners need not specify this parameter in their requests. If either the
	// source or destination S3 bucket has Requester Pays enabled, the requester will
	// pay for the corresponding charges. For information about downloading objects
	// from Requester Pays buckets, see [Downloading Objects in Requester Pays Buckets]in the Amazon S3 User Guide.
	//
	// This functionality is not supported for directory buckets.
	//
	// [Downloading Objects in Requester Pays Buckets]: https://docs.aws.amazon.com/AmazonS3/latest/dev/ObjectsinRequesterPaysBuckets.html
	RequestPayer types.RequestPayer

	// Sets the Cache-Control header of the response.
	ResponseCacheControl *string

	// Sets the Content-Disposition header of the response.
	ResponseContentDisposition *string

	// Sets the Content-Encoding header of the response.
	ResponseContentEncoding *string

	// Sets the Content-Language header of the response.
	ResponseContentLanguage *string

	// Sets the Content-Type header of the response.
	ResponseContentType *string

	// Sets the Expires header of the response.
	ResponseExpires *time.Time

	// Specifies the algorithm to use when decrypting the object (for example, AES256 ).
	//
	// If you encrypt an object by using server-side encryption with customer-provided
	// encryption keys (SSE-C) when you store the object in Amazon S3, then when you
	// GET the object, you must use the following headers:
	//
	//   - x-amz-server-side-encryption-customer-algorithm
	//
	//   - x-amz-server-side-encryption-customer-key
	//
	//   - x-amz-server-side-encryption-customer-key-MD5
	//
	// For more information about SSE-C, see [Server-Side Encryption (Using Customer-Provided Encryption Keys)] in the Amazon S3 User Guide.
	//
	// This functionality is not supported for directory buckets.
	//
	// [Server-Side Encryption (Using Customer-Provided Encryption Keys)]: https://docs.aws.amazon.com/AmazonS3/latest/dev/ServerSideEncryptionCustomerKeys.html
	SSECustomerAlgorithm *string

	// Specifies the customer-provided encryption key that you originally provided for
	// Amazon S3 to encrypt the data before storing it. This value is used to decrypt
	// the object when recovering it and must match the one used when storing the data.
	// The key must be appropriate for use with the algorithm specified in the
	// x-amz-server-side-encryption-customer-algorithm header.
	//
	// If you encrypt an object by using server-side encryption with customer-provided
	// encryption keys (SSE-C) when you store the object in Amazon S3, then when you
	// GET the object, you must use the following headers:
	//
	//   - x-amz-server-side-encryption-customer-algorithm
	//
	//   - x-amz-server-side-encryption-customer-key
	//
	//   - x-amz-server-side-encryption-customer-key-MD5
	//
	// For more information about SSE-C, see [Server-Side Encryption (Using Customer-Provided Encryption Keys)] in the Amazon S3 User Guide.
	//
	// This functionality is not supported for directory buckets.
	//
	// [Server-Side Encryption (Using Customer-Provided Encryption Keys)]: https://docs.aws.amazon.com/AmazonS3/latest/dev/ServerSideEncryptionCustomerKeys.html
	SSECustomerKey *string

	// Specifies the 128-bit MD5 digest of the customer-provided encryption key
	// according to RFC 1321. Amazon S3 uses this header for a message integrity check
	// to ensure that the encryption key was transmitted without error.
	//
	// If you encrypt an object by using server-side encryption with customer-provided
	// encryption keys (SSE-C) when you store the object in Amazon S3, then when you
	// GET the object, you must use the following headers:
	//
	//   - x-amz-server-side-encryption-customer-algorithm
	//
	//   - x-amz-server-side-encryption-customer-key
	//
	//   - x-amz-server-side-encryption-customer-key-MD5
	//
	// For more information about SSE-C, see [Server-Side Encryption (Using Customer-Provided Encryption Keys)] in the Amazon S3 User Guide.
	//
	// This functionality is not supported for directory buckets.
	//
	// [Server-Side Encryption (Using Customer-Provided Encryption Keys)]: https://docs.aws.amazon.com/AmazonS3/latest/dev/ServerSideEncryptionCustomerKeys.html
	SSECustomerKeyMD5 *string

	// Version ID used to reference a specific version of the object.
	//
	// By default, the GetObject operation returns the current version of an object.
	// To return a different version, use the versionId subresource.
	//
	//   - If you include a versionId in your request header, you must have the
	//   s3:GetObjectVersion permission to access a specific version of an object. The
	//   s3:GetObject permission is not required in this scenario.
	//
	//   - If you request the current version of an object without a specific versionId
	//   in the request header, only the s3:GetObject permission is required. The
	//   s3:GetObjectVersion permission is not required in this scenario.
	//
	//   - Directory buckets - S3 Versioning isn't enabled and supported for directory
	//   buckets. For this API operation, only the null value of the version ID is
	//   supported by directory buckets. You can only specify null to the versionId
	//   query parameter in the request.
	//
	// For more information about versioning, see [PutBucketVersioning].
	//
	// [PutBucketVersioning]: https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutBucketVersioning.html
	VersionId *string

	noSmithyDocumentSerde
}

func (in *GetObjectInput) bindEndpointParams(p *EndpointParameters) {

	p.Bucket = in.Bucket
	p.Key = in.Key

}

type GetObjectOutput struct {

	// Indicates that a range of bytes was specified in the request.
	AcceptRanges *string

	// Object data.
	Body io.ReadCloser

	// Indicates whether the object uses an S3 Bucket Key for server-side encryption
	// with Key Management Service (KMS) keys (SSE-KMS).
	BucketKeyEnabled *bool

	// Specifies caching behavior along the request/reply chain.
	CacheControl *string

	// The Base64 encoded, 32-bit CRC32 checksum of the object. This checksum is only
	// present if the object was uploaded with the object. For more information, see [Checking object integrity]
	// in the Amazon S3 User Guide.
	//
	// [Checking object integrity]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html
	ChecksumCRC32 *string

	// The Base64 encoded, 32-bit CRC32C checksum of the object. This checksum is only
	// present if the checksum was uploaded with the object. For more information, see [Checking object integrity]
	// in the Amazon S3 User Guide.
	//
	// [Checking object integrity]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html
	ChecksumCRC32C *string

	// The Base64 encoded, 64-bit CRC64NVME checksum of the object. For more
	// information, see [Checking object integrity in the Amazon S3 User Guide].
	//
	// [Checking object integrity in the Amazon S3 User Guide]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html
	ChecksumCRC64NVME *string

	// The Base64 encoded, 128-bit MD5 digest of the object. For more information, see [Checking object integrity in the Amazon S3 User Guide]
	// .
	//
	// [Checking object integrity in the Amazon S3 User Guide]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html
	ChecksumMD5 *string

	// The Base64 encoded, 160-bit SHA1 digest of the object. This checksum is only
	// present if the checksum was uploaded with the object. For more information, see [Checking object integrity]
	// in the Amazon S3 User Guide.
	//
	// [Checking object integrity]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html
	ChecksumSHA1 *string

	// The Base64 encoded, 256-bit SHA256 digest of the object. This checksum is only
	// present if the checksum was uploaded with the object. For more information, see [Checking object integrity]
	// in the Amazon S3 User Guide.
	//
	// [Checking object integrity]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html
	ChecksumSHA256 *string

	// The Base64 encoded, 512-bit SHA512 digest of the object. For more information,
	// see [Checking object integrity in the Amazon S3 User Guide].
	//
	// [Checking object integrity in the Amazon S3 User Guide]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html
	ChecksumSHA512 *string

	// The checksum type, which determines how part-level checksums are combined to
	// create an object-level checksum for multipart objects. You can use this header
	// response to verify that the checksum type that is received is the same checksum
	// type that was specified in the CreateMultipartUpload request. For more
	// information, see [Checking object integrity]in the Amazon S3 User Guide.
	//
	// [Checking object integrity]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html
	ChecksumType types.ChecksumType

	// The Base64 encoded, 128-bit XXHASH128 checksum of the object. For more
	// information, see [Checking object integrity in the Amazon S3 User Guide].
	//
	// [Checking object integrity in the Amazon S3 User Guide]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html
	ChecksumXXHASH128 *string

	// The Base64 encoded, 64-bit XXHASH3 checksum of the object. For more
	// information, see [Checking object integrity in the Amazon S3 User Guide].
	//
	// [Checking object integrity in the Amazon S3 User Guide]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html
	ChecksumXXHASH3 *string

	// The Base64 encoded, 64-bit XXHASH64 checksum of the object. For more
	// information, see [Checking object integrity in the Amazon S3 User Guide].
	//
	// [Checking object integrity in the Amazon S3 User Guide]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html
	ChecksumXXHASH64 *string

	// Specifies presentational information for the object.
	ContentDisposition *string

	// Indicates what content encodings have been applied to the object and thus what
	// decoding mechanisms must be applied to obtain the media-type referenced by the
	// Content-Type header field.
	ContentEncoding *string

	// The language the content is in.
	ContentLanguage *string

	// Size of the body in bytes.
	ContentLength *int64

	// The portion of the object returned in the response.
	ContentRange *string

	// A standard MIME type describing the format of the object data.
	ContentType *string

	// Indicates whether the object retrieved was (true) or was not (false) a Delete
	// Marker. If false, this response header does not appear in the response.
	//
	//   - If the current version of the object is a delete marker, Amazon S3 behaves
	//   as if the object was deleted and includes x-amz-delete-marker: true in the
	//   response.
	//
	//   - If the specified version in the request is a delete marker, the response
	//   returns a 405 Method Not Allowed error and the Last-Modified: timestamp
	//   response header.
	DeleteMarker *bool

	// An entity tag (ETag) is an opaque identifier assigned by a web server to a
	// specific version of a resource found at a URL.
	ETag *string

	// If the object expiration is configured (see [PutBucketLifecycleConfiguration]PutBucketLifecycleConfiguration ),
	// the response includes this header. It includes the expiry-date and rule-id
	// key-value pairs providing object expiration information. The value of the
	// rule-id is URL-encoded.
	//
	// Object expiration information is not returned in directory buckets and this
	// header returns the value " NotImplemented " in all responses for directory
	// buckets.
	//
	// [PutBucketLifecycleConfiguration]: https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutBucketLifecycleConfiguration.html
	Expiration *string

	// The date and time at which the object is no longer cacheable.
	//
	// Deprecated: This field is handled inconsistently across AWS SDKs. Prefer using
	// the ExpiresString field which contains the unparsed value from the service
	// response.
	Expires *time.Time

	// The unparsed value of the Expires field from the service response. Prefer use
	// of this value over the normal Expires response field where possible.
	ExpiresString *string

	// Date and time when the object was last modified.
	//
	// General purpose buckets - When you specify a versionId of the object in your
	// request, if the specified version in the request is a delete marker, the
	// response returns a 405 Method Not Allowed error and the Last-Modified: timestamp
	// response header.
	LastModified *time.Time

	// A map of metadata to store with the object in S3.
	//
	// Map keys will be normalized to lower-case.
	Metadata map[string]string

	// This is set to the number of metadata entries not returned in the headers that
	// are prefixed with x-amz-meta- . This can happen if you create metadata using an
	// API like SOAP that supports more flexible metadata than the REST API. For
	// example, using SOAP, you can create metadata whose values are not legal HTTP
	// headers.
	//
	// This functionality is not supported for directory buckets.
	MissingMeta *int32

	// Indicates whether this object has an active legal hold. This field is only
	// returned if you have permission to view an object's legal hold status.
	//
	// This functionality is not supported for directory buckets.
	ObjectLockLegalHoldStatus types.ObjectLockLegalHoldStatus

	// The Object Lock mode that's currently in place for this object.
	//
	// This functionality is not supported for directory buckets.
	ObjectLockMode types.ObjectLockMode

	// The date and time when this object's Object Lock will expire.
	//
	// This functionality is not supported for directory buckets.
	ObjectLockRetainUntilDate *time.Time

	// The count of parts this object has. This value is only returned if you specify
	// partNumber in your request and the object was uploaded as a multipart upload.
	PartsCount *int32

	// Amazon S3 can return this if your request involves a bucket that is either a
	// source or destination in a replication rule.
	//
	// This functionality is not supported for directory buckets.
	ReplicationStatus types.ReplicationStatus

	// If present, indicates that the requester was successfully charged for the
	// request. For more information, see [Using Requester Pays buckets for storage transfers and usage]in the Amazon Simple Storage Service user
	// guide.
	//
	// This functionality is not supported for directory buckets.
	//
	// [Using Requester Pays buckets for storage transfers and usage]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/RequesterPaysBuckets.html
	RequestCharged types.RequestCharged

	// Provides information about object restoration action and expiration time of the
	// restored object copy.
	//
	// This functionality is not supported for directory buckets. Directory buckets
	// only support EXPRESS_ONEZONE (the S3 Express One Zone storage class) in
	// Availability Zones and ONEZONE_IA (the S3 One Zone-Infrequent Access storage
	// class) in Dedicated Local Zones.
	Restore *string

	// If server-side encryption with a customer-provided encryption key was
	// requested, the response will include this header to confirm the encryption
	// algorithm that's used.
	//
	// This functionality is not supported for directory buckets.
	SSECustomerAlgorithm *string

	// If server-side encryption with a customer-provided encryption key was
	// requested, the response will include this header to provide the round-trip
	// message integrity verification of the customer-provided encryption key.
	//
	// This functionality is not supported for directory buckets.
	SSECustomerKeyMD5 *string

	// If present, indicates the ID of the KMS key that was used for object encryption.
	SSEKMSKeyId *string

	// The server-side encryption algorithm used when you store this object in Amazon
	// S3 or Amazon FSx.
	//
	// When accessing data stored in Amazon FSx file systems using S3 access points,
	// the only valid server side encryption option is aws:fsx .
	ServerSideEncryption types.ServerSideEncryption

	// Provides storage class information of the object. Amazon S3 returns this header
	// for all objects except for S3 Standard storage class objects.
	//
	// Directory buckets - Directory buckets only support EXPRESS_ONEZONE (the S3
	// Express One Zone storage class) in Availability Zones and ONEZONE_IA (the S3
	// One Zone-Infrequent Access storage class) in Dedicated Local Zones.
	StorageClass types.StorageClass

	// The number of tags, if any, on the object, when you have the relevant
	// permission to read object tags.
	//
	// You can use [GetObjectTagging] to retrieve the tag set associated with an object.
	//
	// This functionality is not supported for directory buckets.
	//
	// [GetObjectTagging]: https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetObjectTagging.html
	TagCount *int32

	// Version ID of the object.
	//
	// This functionality is not supported for directory buckets.
	VersionId *string

	// If the bucket is configured as a website, redirects requests for this object to
	// another object in the same bucket or to an external URL. Amazon S3 stores the
	// value of this header in the object metadata.
	//
	// This functionality is not supported for directory buckets.
	WebsiteRedirectLocation *string

	// Metadata pertaining to the operation's result.
	ResultMetadata middleware.Metadata

	noSmithyDocumentSerde
}

func (c *Client) addOperationGetObjectMiddlewares(stack *middleware.Stack, options Options) (err error) {
	err = stack.Serialize.Add(&awsRestxml_serializeOpGetObject{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsRestxml_deserializeOpGetObject{}, middleware.After)
	if err != nil {
		return err
	}

	if err = addlegacyEndpointContextSetter(stack, options); err != nil {
		return err
	}
	if err = addComputeContentLength(stack); err != nil {
		return err
	}
	if err = addResolveEndpointMiddleware(stack, options); err != nil {
		return err
	}
	if err = addComputePayloadSHA256(stack); err != nil {
		return err
	}
	if err = addRecordResponseTiming(stack); err != nil {
		return err
	}
	if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = addPutBucketContextMiddleware(stack); err != nil {
		return err
	}
	if err = addIsExpressUserAgent(stack); err != nil {
		return err
	}
	if err = addResponseChecksumMetricsTracking(stack, options); err != nil {
		return err
	}
	if err = addCredentialSource(stack, options); err != nil {
		return err
	}
	if err = addOpGetObjectValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware(options.Region, "GetObject"), middleware.Before); err != nil {
		return err
	}
	if err = addMetadataRetrieverMiddleware(stack); err != nil {
		return err
	}
	if err = addGetObjectOutputChecksumMiddlewares(stack, options); err != nil {
		return err
	}
	if err = addGetObjectUpdateEndpoint(stack, options); err != nil {
		return err
	}
	if err = addResponseErrorMiddleware(stack); err != nil {
		return err
	}
	if err = v4.AddContentSHA256HeaderMiddleware(stack); err != nil {
		return err
	}
	if err = disableAcceptEncodingGzip(stack); err != nil {
		return err
	}
	if err = addRequestResponseLogging(stack, options); err != nil {
		return err
	}
	if err = addDisableHTTPSMiddleware(stack, options); err != nil {
		return err
	}
	if err = addSerializeImmutableHostnameBucketMiddleware(stack, options); err != nil {
		return err
	}
	if err = addInterceptors(stack, options); err != nil {
		return err
	}
	return nil
}

func (v *GetObjectInput) bucket() (string, bool) {
	if v.Bucket == nil {
		return "", false
	}
	return *v.Bucket, true
}

// getGetObjectRequestValidationModeMember gets the request checksum validation
// mode provided as input.
func getGetObjectRequestValidationModeMember(input interface{}) (string, bool) {
	in := input.(*GetObjectInput)
	if len(in.ChecksumMode) == 0 {
		return "", false
	}
	return string(in.ChecksumMode), true
}

func setGetObjectRequestValidationModeMember(input interface{}, mode string) {
	in := input.(*GetObjectInput)
	in.ChecksumMode = types.ChecksumMode(mode)
}

func addGetObjectOutputChecksumMiddlewares(stack *middleware.Stack, options Options) error {
	return internalChecksum.AddOutputMiddleware(stack, internalChecksum.OutputMiddlewareOptions{
		GetValidationMode:             getGetObjectRequestValidationModeMember,
		SetValidationMode:             setGetObjectRequestValidationModeMember,
		ResponseChecksumValidation:    options.ResponseChecksumValidation,
		ValidationAlgorithms:          []string{"CRC64NVME", "CRC32", "CRC32C", "SHA256", "SHA1", "SHA512", "MD5", "XXHASH64", "XXHASH3", "XXHASH128"},
		IgnoreMultipartValidation:     true,
		LogValidationSkipped:          !options.DisableLogOutputChecksumValidationSkipped,
		LogMultipartValidationSkipped: !options.DisableLogOutputChecksumValidationSkipped,
	})
}

// getGetObjectBucketMember returns a pointer to string denoting a provided bucket
// member valueand a boolean indicating if the input has a modeled bucket name,
func getGetObjectBucketMember(input interface{}) (*string, bool) {
	in := input.(*GetObjectInput)
	if in.Bucket == nil {
		return nil, false
	}
	return in.Bucket, true
}
func addGetObjectUpdateEndpoint(stack *middleware.Stack, options Options) error {
	return s3cust.UpdateEndpoint(stack, s3cust.UpdateEndpointOptions{
		Accessor: s3cust.UpdateEndpointParameterAccessor{
			GetBucketFromInput: getGetObjectBucketMember,
		},
		UsePathStyle:                   options.UsePathStyle,
		UseAccelerate:                  options.UseAccelerate,
		SupportsAccelerate:             true,
		TargetS3ObjectLambda:           false,
		EndpointResolver:               options.EndpointResolver,
		EndpointResolverOptions:        options.EndpointOptions,
		UseARNRegion:                   options.UseARNRegion,
		DisableMultiRegionAccessPoints: options.DisableMultiRegionAccessPoints,
	})
}

// PresignGetObject is used to generate a presigned HTTP Request which contains
// presigned URL, signed headers and HTTP method used.
func (c *PresignClient) PresignGetObject(ctx context.Context, params *GetObjectInput, optFns ...func(*PresignOptions)) (*v4.PresignedHTTPRequest, error) {
	if params == nil {
		params = &GetObjectInput{}
	}
	options := c.options.copy()
	for _, fn := range optFns {
		fn(&options)
	}
	clientOptFns := append(options.ClientOptions, withNopHTTPClientAPIOption)

	result, _, err := c.client.invokeOperation(ctx, "GetObject", params, clientOptFns,
		c.client.addOperationGetObjectMiddlewares,
		presignConverter(options).convertToPresignMiddleware,
		addGetObjectPayloadAsUnsigned,
	)
	if err != nil {
		return nil, err
	}

	out := result.(*v4.PresignedHTTPRequest)
	return out, nil
}

func addGetObjectPayloadAsUnsigned(stack *middleware.Stack, options Options) error {
	v4.RemoveContentSHA256HeaderMiddleware(stack)
	v4.RemoveComputePayloadSHA256Middleware(stack)
	return v4.AddUnsignedPayloadMiddleware(stack)
}
