mirror of
https://github.com/minio/minio.git
synced 2024-12-30 09:03:22 -05:00
85 lines
2.7 KiB
Go
85 lines
2.7 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
|
|
//
|
|
// This file is part of MinIO Object Storage stack
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package crypto
|
|
|
|
import (
|
|
"math/rand"
|
|
"strings"
|
|
|
|
"github.com/minio/minio/cmd/config"
|
|
"github.com/minio/minio/pkg/ellipses"
|
|
"github.com/minio/minio/pkg/env"
|
|
xnet "github.com/minio/minio/pkg/net"
|
|
)
|
|
|
|
const (
|
|
// EnvKMSAutoEncryption is the environment variable used to en/disable
|
|
// SSE-S3 auto-encryption. SSE-S3 auto-encryption, if enabled,
|
|
// requires a valid KMS configuration and turns any non-SSE-C
|
|
// request into an SSE-S3 request.
|
|
// If present EnvAutoEncryption must be either "on" or "off".
|
|
EnvKMSAutoEncryption = "MINIO_KMS_AUTO_ENCRYPTION"
|
|
)
|
|
|
|
// ParseKESEndpoints parses the given endpoint string and
|
|
// returns a list of valid endpoint URLs. The order of the
|
|
// returned endpoints is randomized.
|
|
func ParseKESEndpoints(endpointStr string) ([]string, error) {
|
|
var rawEndpoints []string
|
|
for _, endpoint := range strings.Split(endpointStr, ",") {
|
|
if strings.TrimSpace(endpoint) == "" {
|
|
continue
|
|
}
|
|
if !ellipses.HasEllipses(endpoint) {
|
|
rawEndpoints = append(rawEndpoints, endpoint)
|
|
continue
|
|
}
|
|
pattern, err := ellipses.FindEllipsesPatterns(endpoint)
|
|
if err != nil {
|
|
return nil, Errorf("Invalid KES endpoint %q: %v", endpointStr, err)
|
|
}
|
|
for _, p := range pattern {
|
|
rawEndpoints = append(rawEndpoints, p.Expand()...)
|
|
}
|
|
}
|
|
if len(rawEndpoints) == 0 {
|
|
return nil, Errorf("Invalid KES endpoint %q", endpointStr)
|
|
}
|
|
|
|
var (
|
|
randNum = rand.Intn(len(rawEndpoints))
|
|
endpoints = make([]string, len(rawEndpoints))
|
|
)
|
|
for i, endpoint := range rawEndpoints {
|
|
endpoint, err := xnet.ParseHTTPURL(endpoint)
|
|
if err != nil {
|
|
return nil, Errorf("Invalid KES endpoint %q: %v", endpointStr, err)
|
|
}
|
|
endpoints[(randNum+i)%len(rawEndpoints)] = endpoint.String()
|
|
}
|
|
return endpoints, nil
|
|
}
|
|
|
|
// LookupAutoEncryption returns true if and only if
|
|
// the MINIO_KMS_AUTO_ENCRYPTION env. variable is
|
|
// set to "on".
|
|
func LookupAutoEncryption() bool {
|
|
auto, _ := config.ParseBool(env.Get(EnvKMSAutoEncryption, config.EnableOff))
|
|
return auto
|
|
}
|