"bytes"
	"encoding/json"
	"io"
	"net/http"

	"github.com/minio/minio/internal/config"
	"github.com/minio/pkg/v2/env"
	xnet "github.com/minio/pkg/v2/net"
	"github.com/minio/pkg/v2/policy"
)

// Env IAM OPA URL
const (
	URL       = "url"
	AuthToken = "auth_token"

	EnvPolicyOpaURL       = "MINIO_POLICY_OPA_URL"
	EnvPolicyOpaAuthToken = "MINIO_POLICY_OPA_AUTH_TOKEN"
)

	logger.LogOnceIf(ctx, "replication", err, id, errKind...)
}

func iamLogIf(ctx context.Context, err error, errKind ...interface{}) {
	logger.LogIf(ctx, "iam", err, errKind...)
}

func rebalanceLogIf(ctx context.Context, err error, errKind ...interface{}) {
	logger.LogIf(ctx, "rebalance", err, errKind...)
}

// Check request auth type verifies the incoming http request
//   - validates the request signature
//   - validates the policy action if anonymous tests bucket policies if any,
//     for authenticated requests validates IAM policies.
//
// returns APIErrorCode if any to be replied to the client.
func checkRequestAuthType(ctx context.Context, r *http.Request, action policy.Action, bucketName, objectName string) (s3Err APIErrorCode) {

	xnet "github.com/minio/pkg/v2/net"
)

// minio configuration related constants.
const (
	GlobalMinioDefaultPort = "9000"

	globalMinioDefaultRegion = ""
	// This is a sha256 output of ``arn:aws:iam::minio:user/admin``,
	// this is kept in present form to be compatible with S3 owner ID
	// requirements -
	//
	// ```
	//    The canonical user ID is the Amazon S3–only concept.

| *Valid Range* | *Minimum value of 900. Maximum value of 31536000.* |
| *Required*    | *No*                                               |

### Policy

			Key:             config.LambdaWebhookSubSys,
			Description:     "manage remote lambda functions",
			MultipleTargets: true,
		},
		config.HelpKV{
			Key:         config.EtcdSubSys,
			Description: "persist IAM assets externally to etcd",
		},
		config.HelpKV{
			Key:         config.CacheSubSys,
			Type:        "string",
			Description: "enable cache plugin on MinIO for GET/HEAD requests",
			Optional:    true,
		},

vendors. This allows applications to choose different storage class by setting `x-amz-storage-class=STANDARD/REDUCED_REDUNDANCY` for each object uploads so effectively utilizing the capacity of the cluster. Additionally these can also be enforced using IAM policies to make sure the client uploads with correct HTTP headers.

- MinIO also supports expansion of existing clusters in server pools. Each pool is a self contained entity with same SLA's (read/write quorum) for each object as original...

	cred := globalActiveCred
	if cred.AccessKey != accessKey {
		if !globalIAMSys.Initialized() {
			// Check if server has initialized, then only proceed
			// to check for IAM users otherwise its okay for clients
			// to retry with 503 errors when server is coming up.
			return auth.Credentials{}, false, ErrServerNotInitialized
		}

		// Check if the access key is part of users credentials.

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	stsUserPolicyMappingsFile = "stsuser_mappings.json"

	iamAssetsDir = "iam-assets"
)

var iamExportFiles = []string{
	allPoliciesFile,
	allUsersFile,
	allGroupsFile,
	allSvcAcctsFile,
	userPolicyMappingsFile,
	groupPolicyMappingsFile,
	stsUserPolicyMappingsFile,
}

// ExportIAMHandler - exports all iam info as a zipped file