This patch implements Get,Put,Delete bucket policies Supporting - http://docs.aws.amazon.com/AmazonS3/latest/dev/access-policy-language-overview.html Currently supports following actions. "*": true, "s3:*": true, "s3:GetObject": true, "s3:ListBucket": true, "s3:PutObject": true, "s3:CreateBucket": true, "s3:GetBucketLocation": true, "s3:DeleteBucket": true, "s3:DeleteObject": true, "s3:AbortMultipartUpload": true, "s3:ListBucketMultipartUploads": true, "s3:ListMultipartUploadParts": true, following conditions for "StringEquals" and "StringNotEquals" "s3:prefix", "s3:max-keys"
147 lines
3.8 KiB
Go
147 lines
3.8 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/ioutil"
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"os"
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"path/filepath"
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"github.com/minio/minio/pkg/fs"
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"github.com/minio/minio/pkg/probe"
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)
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// getBucketsConfigPath - get buckets path.
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func getBucketsConfigPath() (string, *probe.Error) {
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configPath, err := getConfigPath()
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if err != nil {
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return "", err.Trace()
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}
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return filepath.Join(configPath, "buckets"), nil
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}
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// createBucketsConfigPath - create buckets directory.
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func createBucketsConfigPath() *probe.Error {
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bucketsConfigPath, err := getBucketsConfigPath()
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if err != nil {
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return err
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}
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if e := os.MkdirAll(bucketsConfigPath, 0700); e != nil {
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return probe.NewError(e)
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}
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return nil
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}
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// getBucketConfigPath - get bucket path.
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func getBucketConfigPath(bucket string) (string, *probe.Error) {
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bucketsConfigPath, err := getBucketsConfigPath()
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if err != nil {
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return "", err.Trace()
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}
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return filepath.Join(bucketsConfigPath, bucket), nil
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}
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// createBucketConfigPath - create bucket directory.
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func createBucketConfigPath(bucket string) *probe.Error {
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bucketConfigPath, err := getBucketConfigPath(bucket)
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if err != nil {
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return err
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}
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if e := os.MkdirAll(bucketConfigPath, 0700); e != nil {
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return probe.NewError(e)
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}
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return nil
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}
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// readBucketPolicy - read bucket policy.
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func readBucketPolicy(bucket string) ([]byte, *probe.Error) {
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// Verify bucket is valid.
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if !fs.IsValidBucketName(bucket) {
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return nil, probe.NewError(fs.BucketNameInvalid{Bucket: bucket})
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}
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bucketConfigPath, err := getBucketConfigPath(bucket)
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if err != nil {
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return nil, err.Trace()
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}
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// Get policy file.
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bucketPolicyFile := filepath.Join(bucketConfigPath, "access-policy.json")
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if _, e := os.Stat(bucketPolicyFile); e != nil {
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if os.IsNotExist(e) {
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return nil, probe.NewError(fs.BucketPolicyNotFound{Bucket: bucket})
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}
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return nil, probe.NewError(e)
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}
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accessPolicyBytes, e := ioutil.ReadFile(bucketPolicyFile)
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if e != nil {
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return nil, probe.NewError(e)
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}
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return accessPolicyBytes, nil
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}
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// removeBucketPolicy - remove bucket policy.
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func removeBucketPolicy(bucket string) *probe.Error {
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// Verify bucket is valid.
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if !fs.IsValidBucketName(bucket) {
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return probe.NewError(fs.BucketNameInvalid{Bucket: bucket})
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}
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bucketConfigPath, err := getBucketConfigPath(bucket)
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if err != nil {
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return err.Trace(bucket)
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}
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// Get policy file.
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bucketPolicyFile := filepath.Join(bucketConfigPath, "access-policy.json")
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if _, e := os.Stat(bucketPolicyFile); e != nil {
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if os.IsNotExist(e) {
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return probe.NewError(fs.BucketPolicyNotFound{Bucket: bucket})
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}
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return probe.NewError(e)
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}
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return nil
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}
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// writeBucketPolicy - save bucket policy.
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func writeBucketPolicy(bucket string, accessPolicyBytes []byte) *probe.Error {
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// Verify if bucket path legal
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if !fs.IsValidBucketName(bucket) {
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return probe.NewError(fs.BucketNameInvalid{Bucket: bucket})
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}
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bucketConfigPath, err := getBucketConfigPath(bucket)
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if err != nil {
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return err.Trace()
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}
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// Get policy file.
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bucketPolicyFile := filepath.Join(bucketConfigPath, "access-policy.json")
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if _, e := os.Stat(bucketPolicyFile); e != nil {
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if !os.IsNotExist(e) {
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return probe.NewError(e)
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}
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}
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// Write bucket policy.
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if e := ioutil.WriteFile(bucketPolicyFile, accessPolicyBytes, 0600); e != nil {
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return probe.NewError(e)
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}
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return nil
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}
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