mirror of
https://github.com/minio/minio.git
synced 2024-12-26 23:25:54 -05:00
661b263e77
- remove some duplicated code - reported a bug, separately fixed in #13664 - using strings.ReplaceAll() when needed - using filepath.ToSlash() use when needed - remove all non-Go style comments from the codebase Co-authored-by: Aditya Manthramurthy <donatello@users.noreply.github.com>
86 lines
3.3 KiB
Go
86 lines
3.3 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 kafka
|
|
|
|
import (
|
|
"crypto/sha256"
|
|
"crypto/sha512"
|
|
|
|
"github.com/Shopify/sarama"
|
|
"github.com/xdg/scram"
|
|
)
|
|
|
|
func initScramClient(cfg Config, config *sarama.Config) {
|
|
switch cfg.SASL.Mechanism {
|
|
case "sha512":
|
|
config.Net.SASL.SCRAMClientGeneratorFunc = func() sarama.SCRAMClient { return &XDGSCRAMClient{HashGeneratorFcn: KafkaSHA512} }
|
|
config.Net.SASL.Mechanism = sarama.SASLMechanism(sarama.SASLTypeSCRAMSHA512)
|
|
case "sha256":
|
|
config.Net.SASL.SCRAMClientGeneratorFunc = func() sarama.SCRAMClient { return &XDGSCRAMClient{HashGeneratorFcn: KafkaSHA256} }
|
|
config.Net.SASL.Mechanism = sarama.SASLMechanism(sarama.SASLTypeSCRAMSHA256)
|
|
default:
|
|
// default to PLAIN
|
|
config.Net.SASL.Mechanism = sarama.SASLMechanism(sarama.SASLTypePlaintext)
|
|
}
|
|
}
|
|
|
|
// KafkaSHA256 is a function that returns a crypto/sha256 hasher and should be used
|
|
// to create Client objects configured for SHA-256 hashing.
|
|
var KafkaSHA256 scram.HashGeneratorFcn = sha256.New
|
|
|
|
// KafkaSHA512 is a function that returns a crypto/sha512 hasher and should be used
|
|
// to create Client objects configured for SHA-512 hashing.
|
|
var KafkaSHA512 scram.HashGeneratorFcn = sha512.New
|
|
|
|
// XDGSCRAMClient implements the client-side of an authentication
|
|
// conversation with a server. A new conversation must be created for
|
|
// each authentication attempt.
|
|
type XDGSCRAMClient struct {
|
|
*scram.Client
|
|
*scram.ClientConversation
|
|
scram.HashGeneratorFcn
|
|
}
|
|
|
|
// Begin constructs a SCRAM client component based on a given hash.Hash
|
|
// factory receiver. This constructor will normalize the username, password
|
|
// and authzID via the SASLprep algorithm, as recommended by RFC-5802. If
|
|
// SASLprep fails, the method returns an error.
|
|
func (x *XDGSCRAMClient) Begin(userName, password, authzID string) (err error) {
|
|
x.Client, err = x.HashGeneratorFcn.NewClient(userName, password, authzID)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
x.ClientConversation = x.Client.NewConversation()
|
|
return nil
|
|
}
|
|
|
|
// Step takes a string provided from a server (or just an empty string for the
|
|
// very first conversation step) and attempts to move the authentication
|
|
// conversation forward. It returns a string to be sent to the server or an
|
|
// error if the server message is invalid. Calling Step after a conversation
|
|
// completes is also an error.
|
|
func (x *XDGSCRAMClient) Step(challenge string) (response string, err error) {
|
|
response, err = x.ClientConversation.Step(challenge)
|
|
return
|
|
}
|
|
|
|
// Done returns true if the conversation is completed or has errored.
|
|
func (x *XDGSCRAMClient) Done() bool {
|
|
return x.ClientConversation.Done()
|
|
}
|