package jwt

// This file is a re-implementation of the original code here with some
// additional allocation tweaks reproduced using GODEBUG=allocfreetrace=1
// original file https://github.com/golang-jwt/jwt/blob/main/parser.go
// borrowed under MIT License https://github.com/golang-jwt/jwt/blob/main/LICENSE

import (
	"bytes"
	"crypto"
	"crypto/hmac"
	"encoding/base64"
	"errors"
	"fmt"
	"hash"
	"sync"
	"time"

}

// FuncExpr represents a function call
type FuncExpr struct {
	SFunc     *SimpleArgFunc `parser:"  @@"`
	Count     *CountFunc     `parser:"| @@"`
	Cast      *CastFunc      `parser:"| @@"`
	Substring *SubstringFunc `parser:"| @@"`
	Extract   *ExtractFunc   `parser:"| @@"`
	Trim      *TrimFunc      `parser:"| @@"`
	DateAdd   *DateAddFunc   `parser:"| @@"`
	DateDiff  *DateDiffFunc  `parser:"| @@"`

		if actualErrCode == ErrNone {
			// validating the extracted/parsed credential fields.
			validateCredentialfields(t, i+1, testCase.expectedAuthField.Credential, parsedAuthField.Credential)

			// validating the extraction/parsing of signature field.
			if !compareSignatureV4(testCase.expectedAuthField.Signature, parsedAuthField.Signature) {

// minioVersionToReleaseTime - parses a standard official release
// MinIO version string.
//
// An official binary's version string is the release time formatted
// with RFC3339 (in UTC) - e.g. `2017-09-29T19:16:56Z`
func minioVersionToReleaseTime(version string) (releaseTime time.Time, err error) {
	return time.Parse(time.RFC3339, version)
}

	if uuid == "" {
		uuid = mustGetUUID()
	}
	arn := madmin.ARN{
		Type:   t.Type,
		ID:     uuid,
		Region: t.Region,
		Bucket: t.TargetBucket,
	}
	return arn.String()
}

// Returns parsed target config. If KMS is configured, remote target is decrypted
func parseBucketTargetConfig(bucket string, cdata, cmetadata []byte) (*madmin.BucketTargets, error) {
	var (
		data []byte
		err  error

			// Generate role ARN as combination of provider domain and
			// prefix of client ID.
			domain := configURLDomain
			if domain == "" {
				// Attempt to parse the JWKs URI.
				domain = p.JWKS.URL.Hostname()
				if domain == "" {
					return c, config.Errorf("unable to parse a domain from the OpenID config")
				}
			}
			if p.ClientID == "" {
				return c, config.Errorf("client ID must not be empty")
			}

		return
	}

	// Read escaped copy source path to check for parameters.
	cpSrcPath := r.Header.Get(xhttp.AmzCopySource)
	var vid string
	if u, err := url.Parse(cpSrcPath); err == nil {
		vid = strings.TrimSpace(u.Query().Get(xhttp.VersionID))
		// Note that url.Parse does the unescaping
		cpSrcPath = u.Path
	}

	srcBucket, srcObject := path2BucketObject(cpSrcPath)

	$(eval LDFLAGS := $(shell MINIO_RELEASE="RELEASE" MINIO_HOTFIX="hotfix.$(shell git rev-parse --short HEAD)" go run buildscripts/gen-ldflags.go $(shell git describe --tags --abbrev=0 | \
    sed 's#RELEASE\.\([0-9]\+\)-\([0-9]\+\)-\([0-9]\+\)T\([0-9]\+\)-\([0-9]\+\)-\([0-9]\+\)Z#\1-\2-\3T\4:\5:\6Z#')))
	$(eval VERSION := $(shell git describe --tags --abbrev=0).hotfix.$(shell git rev-parse --short HEAD))

		metadata := S3.CreateMetadata(nil, test.KeyID, test.SealedDataKey, test.SealedKey)
		keyID, kmsKey, sealedKey, err := S3.ParseMetadata(metadata)
		if err != nil {
			t.Errorf("Test %d: failed to parse metadata: %v", i, err)
			continue
		}
		if keyID != test.KeyID {
			t.Errorf("Test %d: Key-ID mismatch: got '%s' - want '%s'", i, keyID, test.KeyID)
		}
		if !bytes.Equal(kmsKey, test.SealedDataKey) {

	if err := json.Unmarshal(data, &s); err != nil {
		return err
	}

	eventName, err := ParseName(s)
	if err != nil {
		return err
	}

	*name = eventName
	return nil
}

// ParseName - parses string to Name.
func ParseName(s string) (Name, error) {
	switch s {
	case "s3:BucketCreated:*":
		return BucketCreated, nil
	case "s3:BucketRemoved:*":
		return BucketRemoved, nil
	case "s3:ObjectAccessed:*":