// specified in the Forwarded header. The first element will always be
		// the 'for=', which we ignore, subsequently we proceed to look for
		// 'proto=' which should precede right after `for=` if not
		// we simply ignore the values and return empty. This is in line
		// with the approach we took for returning first ip from multiple
		// params.
		if match := forRegex.FindStringSubmatch(proto); len(match) > 1 {

```sh
$ mc admin config set myminio identity_plugin --env
KEY:
identity_plugin  enable Identity Plugin via external hook

ARGS:
MINIO_IDENTITY_PLUGIN_URL*          (url)       plugin hook endpoint (HTTP(S)) e.g. "http://localhost:8181/path/to/endpoint"
MINIO_IDENTITY_PLUGIN_AUTH_TOKEN    (string)    authorization token for plugin hook endpoint
MINIO_IDENTITY_PLUGIN_ROLE_POLICY*  (string)    policies to apply for plugin authorized users

	updatedAt, err := globalBucketMetadataSys.Update(ctx, bucket, bucketSSEConfig, configData)
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	// Call site replication hook.
	//
	// We encode the xml bytes as base64 to ensure there are no encoding
	// errors.
	cfgStr := base64.StdEncoding.EncodeToString(configData)

//   "format": "XXXXX",
//   "XXXXX": {
//
//   }
// }
// Here "XXXXX" depends on the backend, currently we have "fs" and "xl" implementations.
// formatMetaV1 should be inherited by backend format structs. Please look at format-fs.go
// and format-xl.go for details.

// Ideally we will never have a situation where we will have to change the
// fields of this struct and deal with related migration.
type formatMetaV1 struct {

package sql

import (
	"errors"

	"github.com/bcicen/jstream"
	"github.com/minio/simdjson-go"
)

var (
	errKeyLookup                  = errors.New("Cannot look up key in non-object value")
	errIndexLookup                = errors.New("Cannot look up array index in non-array value")
	errWildcardObjectLookup       = errors.New("Object wildcard used on non-object value")

	updatedAt, err := globalBucketMetadataSys.Update(ctx, bucket, bucketPolicyConfig, configData)
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	// Call site replication hook.
	replLogIf(ctx, globalSiteReplicationSys.BucketMetaHook(ctx, madmin.SRBucketMeta{
		Type:      madmin.SRBucketMetaTypePolicy,
		Bucket:    bucket,
		Policy:    bucketPolicyBytes,
		UpdatedAt: updatedAt,
	}))

	if !ok {
		return errors.New("STS JWT Token has `aud` claim invalid, `aud` must match configured OpenID Client ID")
	}
	if !audValues.Contains(pCfg.ClientID) {
		// if audience claims is missing, look for "azp" claims.
		// OPTIONAL. Authorized party - the party to which the ID
		// Token was issued. If present, it MUST contain the OAuth
		// 2.0 Client ID of this party. This Claim is only needed

		return hex.EncodeToString(sum256[:])
	}

	var (
		defaultSha256Cksum string
		v                  []string
		ok                 bool
	)

	// For a presigned request we look at the query param for sha256.
	if isRequestPresignedSignatureV4(r) {
		// X-Amz-Content-Sha256, if not set in presigned requests, checksum
		// will default to 'UNSIGNED-PAYLOAD'.
		defaultSha256Cksum = unsignedPayload

		participle.Lexer(sqlLexer),
		participle.CaseInsensitive("Keyword"),
		participle.CaseInsensitive("Timeword"),
	)

	j := JSONPath{}
	cases := []string{
		"S3Object",
		"S3Object.id",
		"S3Object.book.title",
		"S3Object.id[1]",
		"S3Object.id['abc']",
		"S3Object.id['ab']",
		"S3Object.words.*.id",
		"S3Object.words.name[*].val",
		"S3Object.words.name[*].val[*]",
		"S3Object.words.name[*].val.*",
	}

	}

	Help = config.HelpKVS{
		config.HelpKV{
			Key:         URL,
			Description: `plugin hook endpoint (HTTP(S)) e.g. "http://localhost:8181/v1/data/httpapi/authz/allow"` + defaultHelpPostfix(URL),
			Type:        "url",
			Sensitive:   true,
		},
		config.HelpKV{
			Key:         AuthToken,
			Description: "authorization header for plugin hook endpoint" + defaultHelpPostfix(AuthToken),
			Optional:    true,
			Type:        "string",