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auth, etcdserver: separate auth checking apply from core apply #5672
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heyitsanthony
merged 1 commit into
etcd-io:master
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heyitsanthony:applier-auth-layer
Jun 15, 2016
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,95 @@ | ||
// Copyright 2016 The etcd Authors | ||
// | ||
// 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 etcdserver | ||
|
||
import ( | ||
"github.com/coreos/etcd/auth" | ||
pb "github.com/coreos/etcd/etcdserver/etcdserverpb" | ||
) | ||
|
||
type authApplierV3 struct { | ||
applierV3 | ||
as auth.AuthStore | ||
user string | ||
} | ||
|
||
func newAuthApplierV3(as auth.AuthStore, base applierV3) *authApplierV3 { | ||
return &authApplierV3{base, as, ""} | ||
} | ||
|
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func (aa *authApplierV3) Apply(r *pb.InternalRaftRequest) *applyResult { | ||
user := r.Header.Username | ||
if needAdminPermission(r) && !aa.as.IsAdminPermitted(user) { | ||
return &applyResult{err: auth.ErrPermissionDenied} | ||
} | ||
aa.user = user | ||
ret := aa.applierV3.Apply(r) | ||
aa.user = "" | ||
return ret | ||
} | ||
|
||
func (aa *authApplierV3) Put(txnID int64, r *pb.PutRequest) (*pb.PutResponse, error) { | ||
if !aa.as.IsPutPermitted(aa.user, r.Key) { | ||
return nil, auth.ErrPermissionDenied | ||
} | ||
return aa.applierV3.Put(txnID, r) | ||
} | ||
|
||
func (aa *authApplierV3) Range(txnID int64, r *pb.RangeRequest) (*pb.RangeResponse, error) { | ||
if !aa.as.IsRangePermitted(aa.user, r.Key, r.RangeEnd) { | ||
return nil, auth.ErrPermissionDenied | ||
} | ||
return aa.applierV3.Range(txnID, r) | ||
} | ||
|
||
func (aa *authApplierV3) DeleteRange(txnID int64, r *pb.DeleteRangeRequest) (*pb.DeleteRangeResponse, error) { | ||
if !aa.as.IsDeleteRangePermitted(aa.user, r.Key, r.RangeEnd) { | ||
return nil, auth.ErrPermissionDenied | ||
} | ||
return aa.applierV3.DeleteRange(txnID, r) | ||
} | ||
|
||
func needAdminPermission(r *pb.InternalRaftRequest) bool { | ||
switch { | ||
case r.AuthEnable != nil: | ||
return true | ||
case r.AuthDisable != nil: | ||
return true | ||
case r.AuthUserAdd != nil: | ||
return true | ||
case r.AuthUserDelete != nil: | ||
return true | ||
case r.AuthUserChangePassword != nil: | ||
return true | ||
case r.AuthUserGrantRole != nil: | ||
return true | ||
case r.AuthUserGet != nil: | ||
return true | ||
case r.AuthUserRevokeRole != nil: | ||
return true | ||
case r.AuthRoleAdd != nil: | ||
return true | ||
case r.AuthRoleGrantPermission != nil: | ||
return true | ||
case r.AuthRoleGet != nil: | ||
return true | ||
case r.AuthRoleRevokePermission != nil: | ||
return true | ||
case r.AuthRoleDelete != nil: | ||
return true | ||
default: | ||
return false | ||
} | ||
} |
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How about clearing
aa.user
after checking for ensuring the field is not used more than once?