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minio/signature.go

95 lines
2.6 KiB

/*
* Minio Cloud Storage, (C) 2015, 2016 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 (
"crypto/sha256"
"encoding/hex"
"net/http"
"strings"
signV4 "github.com/minio/minio/pkg/signature"
)
// Verify if request has JWT.
func isRequestJWT(r *http.Request) bool {
if _, ok := r.Header["Authorization"]; ok {
if strings.HasPrefix(r.Header.Get("Authorization"), jwtAlgorithm) {
return ok
}
}
return false
}
// Verify if request has AWS Signature Version '4'.
func isRequestSignatureV4(r *http.Request) bool {
if _, ok := r.Header["Authorization"]; ok {
if strings.HasPrefix(r.Header.Get("Authorization"), signV4Algorithm) {
return ok
}
}
return false
}
// Verify if request has AWS Presignature Version '4'.
func isRequestPresignedSignatureV4(r *http.Request) bool {
if _, ok := r.URL.Query()["X-Amz-Credential"]; ok {
return ok
}
return false
}
// Verify if request has AWS Post policy Signature Version '4'.
func isRequestPostPolicySignatureV4(r *http.Request) bool {
if _, ok := r.Header["Content-Type"]; ok {
if strings.Contains(r.Header.Get("Content-Type"), "multipart/form-data") {
return true
}
}
return false
}
// Verify if request requires ACL check.
func isRequestRequiresACLCheck(r *http.Request) bool {
if isRequestSignatureV4(r) || isRequestPresignedSignatureV4(r) || isRequestPostPolicySignatureV4(r) {
return false
}
return true
}
// Verify if request has valid AWS Signature Version '4'.
func isSignV4ReqAuthenticated(sign *signV4.Signature, r *http.Request) bool {
auth := sign.SetHTTPRequestToVerify(r)
if isRequestSignatureV4(r) {
dummyPayload := sha256.Sum256([]byte(""))
ok, err := auth.DoesSignatureMatch(hex.EncodeToString(dummyPayload[:]))
if err != nil {
errorIf(err.Trace(), "Signature verification failed.", nil)
return false
}
return ok
} else if isRequestPresignedSignatureV4(r) {
ok, err := auth.DoesPresignedSignatureMatch()
if err != nil {
errorIf(err.Trace(), "Presigned signature verification failed.", nil)
return false
}
return ok
}
return false
}