minio/cmd/acl-handlers.go
kannappanr 76ddf4d32f Log x-amz-request-id as log and XML error response (#6173)
Currently, requestid field in logEntry is not populated, as the
requestid field gets set at the very end.
It is now set before regular handler functions. This is also
useful in setting it as part of the XML error response.

Travis build for ppc64le has been quite inconsistent and stays queued
for most of the time. Removing this build as part of Travis.yml for
the time being.
2018-07-20 18:46:32 -07:00

146 lines
4.1 KiB
Go

/*
* Minio Cloud Storage, (C) 2018 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"
"net/http"
"github.com/gorilla/mux"
"github.com/minio/minio/pkg/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"`
}
// 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")
vars := mux.Vars(r)
bucket := vars["bucket"]
objAPI := api.ObjectAPI()
if objAPI == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL)
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(w, s3Error, r.URL)
return
}
// Before proceeding validate if bucket exists.
_, err := objAPI.GetBucketInfo(ctx, bucket)
if err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
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(w, toAPIErrorCode(err), r.URL)
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")
vars := mux.Vars(r)
bucket := vars["bucket"]
object := vars["object"]
objAPI := api.ObjectAPI()
if objAPI == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL)
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(w, s3Error, r.URL)
return
}
// Before proceeding validate if object exists.
_, err := objAPI.GetObjectInfo(ctx, bucket, object)
if err != nil {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
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(w, toAPIErrorCode(err), r.URL)
return
}
w.(http.Flusher).Flush()
}