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Copy pathacl-handlers.go
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287 lines (243 loc) · 8.91 KB
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/*
* MinIO Cloud Storage, (C) 2018-2020 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 cmd
import (
"encoding/xml"
"io"
"net/http"
"net/url"
"github.com/gorilla/mux"
xhttp "github.com/minio/minio/cmd/http"
"github.com/minio/minio/cmd/logger"
"github.com/minio/minio/pkg/bucket/policy"
)
// Data types used for returning dummy access control
// policy XML, these variables shouldn't be used elsewhere
// they are only defined to be used in this file alone.
type grantee struct {
XMLNS string `xml:"xmlns:xsi,attr"`
XMLXSI string `xml:"xsi:type,attr"`
Type string `xml:"Type"`
ID string `xml:"ID,omitempty"`
DisplayName string `xml:"DisplayName,omitempty"`
URI string `xml:"URI,omitempty"`
}
type grant struct {
Grantee grantee `xml:"Grantee"`
Permission string `xml:"Permission"`
}
type accessControlPolicy struct {
XMLName xml.Name `xml:"AccessControlPolicy"`
Owner Owner `xml:"Owner"`
AccessControlList struct {
Grants []grant `xml:"Grant"`
} `xml:"AccessControlList"`
}
// PutBucketACLHandler - PUT Bucket ACL
// -----------------
// This operation uses the ACL subresource
// to set ACL for a bucket, this is a dummy call
// only responds success if the ACL is private.
func (api objectAPIHandlers) PutBucketACLHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "PutBucketACL")
defer logger.AuditLog(w, r, "PutBucketACL", mustGetClaimsFromToken(r))
vars := mux.Vars(r)
bucket := vars["bucket"]
objAPI := api.ObjectAPI()
if objAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
return
}
// Allow putBucketACL if policy action is set, since this is a dummy call
// we are simply re-purposing the bucketPolicyAction.
if s3Error := checkRequestAuthType(ctx, r, policy.PutBucketPolicyAction, bucket, ""); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
// Before proceeding validate if bucket exists.
_, err := objAPI.GetBucketInfo(ctx, bucket)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
aclHeader := r.Header.Get(xhttp.AmzACL)
if aclHeader == "" {
acl := &accessControlPolicy{}
if err = xmlDecoder(r.Body, acl, r.ContentLength); err != nil {
if err == io.EOF {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingSecurityHeader),
r.URL, guessIsBrowserReq(r))
return
}
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
if len(acl.AccessControlList.Grants) == 0 {
writeErrorResponse(ctx, w, toAPIError(ctx, errInvalidArgument), r.URL, guessIsBrowserReq(r))
return
}
if acl.AccessControlList.Grants[0].Permission != "FULL_CONTROL" {
writeErrorResponse(ctx, w, toAPIError(ctx, errInvalidArgument), r.URL, guessIsBrowserReq(r))
return
}
}
if aclHeader != "" && aclHeader != "private" {
writeErrorResponse(ctx, w, toAPIError(ctx, errInvalidArgument), r.URL, guessIsBrowserReq(r))
return
}
w.(http.Flusher).Flush()
}
// GetBucketACLHandler - GET Bucket ACL
// -----------------
// This operation uses the ACL
// subresource to return the ACL of a specified bucket.
func (api objectAPIHandlers) GetBucketACLHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "GetBucketACL")
defer logger.AuditLog(w, r, "GetBucketACL", mustGetClaimsFromToken(r))
vars := mux.Vars(r)
bucket := vars["bucket"]
objAPI := api.ObjectAPI()
if objAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
return
}
// Allow getBucketACL if policy action is set, since this is a dummy call
// we are simply re-purposing the bucketPolicyAction.
if s3Error := checkRequestAuthType(ctx, r, policy.GetBucketPolicyAction, bucket, ""); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
// Before proceeding validate if bucket exists.
_, err := objAPI.GetBucketInfo(ctx, bucket)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
acl := &accessControlPolicy{}
acl.AccessControlList.Grants = append(acl.AccessControlList.Grants, grant{
Grantee: grantee{
XMLNS: "http://www.w3.org/2001/XMLSchema-instance",
XMLXSI: "CanonicalUser",
Type: "CanonicalUser",
},
Permission: "FULL_CONTROL",
})
if err := xml.NewEncoder(w).Encode(acl); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
w.(http.Flusher).Flush()
}
// PutObjectACLHandler - PUT Object ACL
// -----------------
// This operation uses the ACL subresource
// to set ACL for a bucket, this is a dummy call
// only responds success if the ACL is private.
func (api objectAPIHandlers) PutObjectACLHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "PutObjectACL")
defer logger.AuditLog(w, r, "PutObjectACL", mustGetClaimsFromToken(r))
vars := mux.Vars(r)
bucket := vars["bucket"]
object, err := url.PathUnescape(vars["object"])
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
objAPI := api.ObjectAPI()
if objAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
return
}
// Allow putObjectACL if policy action is set, since this is a dummy call
// we are simply re-purposing the bucketPolicyAction.
if s3Error := checkRequestAuthType(ctx, r, policy.PutBucketPolicyAction, bucket, ""); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
// Before proceeding validate if object exists.
_, err = objAPI.GetObjectInfo(ctx, bucket, object, ObjectOptions{})
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
aclHeader := r.Header.Get(xhttp.AmzACL)
if aclHeader == "" {
acl := &accessControlPolicy{}
if err = xmlDecoder(r.Body, acl, r.ContentLength); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
if len(acl.AccessControlList.Grants) == 0 {
writeErrorResponse(ctx, w, toAPIError(ctx, errInvalidArgument), r.URL, guessIsBrowserReq(r))
return
}
if acl.AccessControlList.Grants[0].Permission != "FULL_CONTROL" {
writeErrorResponse(ctx, w, toAPIError(ctx, errInvalidArgument), r.URL, guessIsBrowserReq(r))
return
}
}
if aclHeader != "" && aclHeader != "private" {
writeErrorResponse(ctx, w, toAPIError(ctx, errInvalidArgument), r.URL, guessIsBrowserReq(r))
return
}
w.(http.Flusher).Flush()
}
// GetObjectACLHandler - GET Object ACL
// -----------------
// This operation uses the ACL
// subresource to return the ACL of a specified object.
func (api objectAPIHandlers) GetObjectACLHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "GetObjectACL")
defer logger.AuditLog(w, r, "GetObjectACL", mustGetClaimsFromToken(r))
vars := mux.Vars(r)
bucket := vars["bucket"]
object, err := url.PathUnescape(vars["object"])
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
objAPI := api.ObjectAPI()
if objAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL, guessIsBrowserReq(r))
return
}
// Allow getObjectACL if policy action is set, since this is a dummy call
// we are simply re-purposing the bucketPolicyAction.
if s3Error := checkRequestAuthType(ctx, r, policy.GetBucketPolicyAction, bucket, ""); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL, guessIsBrowserReq(r))
return
}
// Before proceeding validate if object exists.
_, err = objAPI.GetObjectInfo(ctx, bucket, object, ObjectOptions{})
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
acl := &accessControlPolicy{}
acl.AccessControlList.Grants = append(acl.AccessControlList.Grants, grant{
Grantee: grantee{
XMLNS: "http://www.w3.org/2001/XMLSchema-instance",
XMLXSI: "CanonicalUser",
Type: "CanonicalUser",
},
Permission: "FULL_CONTROL",
})
if err := xml.NewEncoder(w).Encode(acl); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
w.(http.Flusher).Flush()
}