60 lines
2 KiB
Go
60 lines
2 KiB
Go
/*
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* Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package main
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import (
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"io"
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"net/http"
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)
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// Validates location constraint in PutBucket request body.
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// The location value in the request body should match the
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// region configured at serverConfig, otherwise error is returned.
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func isValidLocationConstraint(r *http.Request) (s3Error APIErrorCode) {
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serverRegion := serverConfig.GetRegion()
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// If the request has no body with content-length set to 0,
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// we do not have to validate location constraint. Bucket will
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// be created at default region.
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if r.ContentLength == 0 {
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return ErrNone
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}
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locationConstraint := createBucketLocationConfiguration{}
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if err := xmlDecoder(r.Body, &locationConstraint, r.ContentLength); err != nil {
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if err == io.EOF && r.ContentLength == -1 {
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// EOF is a valid condition here when ContentLength is -1.
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return ErrNone
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}
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errorIf(err, "Unable to xml decode location constraint")
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// Treat all other failures as XML parsing errors.
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return ErrMalformedXML
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} // Successfully decoded, proceed to verify the region.
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// Once region has been obtained we proceed to verify it.
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incomingRegion := locationConstraint.Location
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if incomingRegion == "" {
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// Location constraint is empty for region "us-east-1",
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// in accordance with protocol.
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incomingRegion = "us-east-1"
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}
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// Return errInvalidRegion if location constraint does not match
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// with configured region.
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s3Error = ErrNone
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if serverRegion != incomingRegion {
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s3Error = ErrInvalidRegion
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}
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return s3Error
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}
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