mirror of
https://github.com/minio/minio.git
synced 2024-12-24 22:25:54 -05:00
123 lines
4.0 KiB
Go
123 lines
4.0 KiB
Go
/*
|
|
* Minio Cloud Storage, (C) 2015 Minio, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package main
|
|
|
|
import (
|
|
"net/http"
|
|
"strings"
|
|
|
|
"github.com/minio/minio/pkg/probe"
|
|
)
|
|
|
|
const (
|
|
rpcAuthHeaderPrefix = "MINIORPC"
|
|
)
|
|
|
|
// getRPCCredentialsFromAuth parse credentials tag from authorization value
|
|
// Authorization:
|
|
// Authorization: MINIORPC Credential=admin/20130524/milkyway/rpc/rpc_request,
|
|
// SignedHeaders=host;x-minio-date, Signature=fe5f80f77d5fa3beca038a248ff027d0445342fe2855ddc963176630326f1024
|
|
func getRPCCredentialsFromAuth(authValue string) ([]string, *probe.Error) {
|
|
if authValue == "" {
|
|
return nil, probe.NewError(errMissingAuthHeaderValue)
|
|
}
|
|
authFields := strings.Split(strings.TrimSpace(authValue), ",")
|
|
if len(authFields) != 3 {
|
|
return nil, probe.NewError(errInvalidAuthHeaderValue)
|
|
}
|
|
authPrefixFields := strings.Fields(authFields[0])
|
|
if len(authPrefixFields) != 2 {
|
|
return nil, probe.NewError(errMissingFieldsAuthHeader)
|
|
}
|
|
if authPrefixFields[0] != rpcAuthHeaderPrefix {
|
|
return nil, probe.NewError(errInvalidAuthHeaderPrefix)
|
|
}
|
|
credentials := strings.Split(strings.TrimSpace(authPrefixFields[1]), "=")
|
|
if len(credentials) != 2 {
|
|
return nil, probe.NewError(errMissingFieldsCredentialTag)
|
|
}
|
|
if len(strings.Split(strings.TrimSpace(authFields[1]), "=")) != 2 {
|
|
return nil, probe.NewError(errMissingFieldsSignedHeadersTag)
|
|
}
|
|
if len(strings.Split(strings.TrimSpace(authFields[2]), "=")) != 2 {
|
|
return nil, probe.NewError(errMissingFieldsSignatureTag)
|
|
}
|
|
credentialElements := strings.Split(strings.TrimSpace(credentials[1]), "/")
|
|
if len(credentialElements) != 5 {
|
|
return nil, probe.NewError(errCredentialTagMalformed)
|
|
}
|
|
return credentialElements, nil
|
|
}
|
|
|
|
// verify if rpcAuthHeader value has valid region
|
|
func isValidRPCRegion(authHeaderValue string) *probe.Error {
|
|
credentialElements, err := getRPCCredentialsFromAuth(authHeaderValue)
|
|
if err != nil {
|
|
return err.Trace()
|
|
}
|
|
region := credentialElements[2]
|
|
if region != "milkyway" {
|
|
return probe.NewError(errInvalidRegion)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// stripRPCAccessKeyID - strip only access key id from auth header
|
|
func stripRPCAccessKeyID(authHeaderValue string) (string, *probe.Error) {
|
|
if err := isValidRPCRegion(authHeaderValue); err != nil {
|
|
return "", err.Trace()
|
|
}
|
|
credentialElements, err := getRPCCredentialsFromAuth(authHeaderValue)
|
|
if err != nil {
|
|
return "", err.Trace()
|
|
}
|
|
if credentialElements[0] != "admin" {
|
|
return "", probe.NewError(errAccessKeyIDInvalid)
|
|
}
|
|
return credentialElements[0], nil
|
|
}
|
|
|
|
// initSignatureRPC initializing rpc signature verification
|
|
func initSignatureRPC(req *http.Request) (*rpcSignature, *probe.Error) {
|
|
// strip auth from authorization header
|
|
authHeaderValue := req.Header.Get("Authorization")
|
|
accessKeyID, err := stripRPCAccessKeyID(authHeaderValue)
|
|
if err != nil {
|
|
return nil, err.Trace()
|
|
}
|
|
authConfig, err := LoadConfig()
|
|
if err != nil {
|
|
return nil, err.Trace()
|
|
}
|
|
authFields := strings.Split(strings.TrimSpace(authHeaderValue), ",")
|
|
signedHeaders := strings.Split(strings.Split(strings.TrimSpace(authFields[1]), "=")[1], ";")
|
|
signature := strings.Split(strings.TrimSpace(authFields[2]), "=")[1]
|
|
for _, user := range authConfig.Users {
|
|
if user.AccessKeyID == accessKeyID {
|
|
signature := &rpcSignature{
|
|
AccessKeyID: user.AccessKeyID,
|
|
SecretAccessKey: user.SecretAccessKey,
|
|
Signature: signature,
|
|
SignedHeaders: signedHeaders,
|
|
Request: req,
|
|
}
|
|
return signature, nil
|
|
}
|
|
}
|
|
return nil, probe.NewError(errAccessKeyIDInvalid)
|
|
}
|