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minio/bucket-policy.go

86 lines
2.5 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 (
"bytes"
"path/filepath"
)
// getBucketsConfigPath - get buckets path.
func getOldBucketsConfigPath() (string, error) {
configPath, err := getConfigPath()
if err != nil {
return "", err
}
return filepath.Join(configPath, "buckets"), nil
}
// readBucketPolicy - read bucket policy.
func readBucketPolicy(bucket string, objAPI ObjectLayer) ([]byte, error) {
// Verify bucket is valid.
if !IsValidBucketName(bucket) {
return nil, BucketNameInvalid{Bucket: bucket}
}
policyPath := pathJoin(bucketConfigPrefix, bucket, policyJSON)
objInfo, err := objAPI.GetObjectInfo(minioMetaBucket, policyPath)
if err != nil {
if _, ok := err.(ObjectNotFound); ok {
return nil, BucketPolicyNotFound{Bucket: bucket}
}
return nil, err
}
var buffer bytes.Buffer
err = objAPI.GetObject(minioMetaBucket, policyPath, 0, objInfo.Size, &buffer)
if err != nil {
if _, ok := err.(ObjectNotFound); ok {
return nil, BucketPolicyNotFound{Bucket: bucket}
}
return nil, err
}
return buffer.Bytes(), nil
}
// removeBucketPolicy - remove bucket policy.
func removeBucketPolicy(bucket string, objAPI ObjectLayer) error {
// Verify bucket is valid.
if !IsValidBucketName(bucket) {
return BucketNameInvalid{Bucket: bucket}
}
policyPath := pathJoin(bucketConfigPrefix, bucket, policyJSON)
if err := objAPI.DeleteObject(minioMetaBucket, policyPath); err != nil {
if _, ok := err.(ObjectNotFound); ok {
return BucketPolicyNotFound{Bucket: bucket}
}
return err
}
return nil
}
// writeBucketPolicy - save bucket policy.
func writeBucketPolicy(bucket string, objAPI ObjectLayer, accessPolicyBytes []byte) error {
// Verify if bucket path legal
if !IsValidBucketName(bucket) {
return BucketNameInvalid{Bucket: bucket}
}
policyPath := pathJoin(bucketConfigPrefix, bucket, policyJSON)
_, err := objAPI.PutObject(minioMetaBucket, policyPath, int64(len(accessPolicyBytes)), bytes.NewReader(accessPolicyBytes), nil)
return err
}