mirror of
https://github.com/octoleo/restic.git
synced 2024-12-11 13:52:31 +00:00
256 lines
7.4 KiB
Go
256 lines
7.4 KiB
Go
/*
|
|
* Minio Go Library for Amazon S3 Compatible Cloud Storage
|
|
* Copyright 2015-2017 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 minio
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"encoding/json"
|
|
"encoding/xml"
|
|
"fmt"
|
|
"net/http"
|
|
"net/url"
|
|
|
|
"github.com/minio/minio-go/pkg/policy"
|
|
"github.com/minio/minio-go/pkg/s3utils"
|
|
)
|
|
|
|
/// Bucket operations
|
|
|
|
// MakeBucket creates a new bucket with bucketName.
|
|
//
|
|
// Location is an optional argument, by default all buckets are
|
|
// created in US Standard Region.
|
|
//
|
|
// For Amazon S3 for more supported regions - http://docs.aws.amazon.com/general/latest/gr/rande.html
|
|
// For Google Cloud Storage for more supported regions - https://cloud.google.com/storage/docs/bucket-locations
|
|
func (c Client) MakeBucket(bucketName string, location string) (err error) {
|
|
defer func() {
|
|
// Save the location into cache on a successful makeBucket response.
|
|
if err == nil {
|
|
c.bucketLocCache.Set(bucketName, location)
|
|
}
|
|
}()
|
|
|
|
// Validate the input arguments.
|
|
if err := s3utils.CheckValidBucketNameStrict(bucketName); err != nil {
|
|
return err
|
|
}
|
|
|
|
// If location is empty, treat is a default region 'us-east-1'.
|
|
if location == "" {
|
|
location = "us-east-1"
|
|
// For custom region clients, default
|
|
// to custom region instead not 'us-east-1'.
|
|
if c.region != "" {
|
|
location = c.region
|
|
}
|
|
}
|
|
// PUT bucket request metadata.
|
|
reqMetadata := requestMetadata{
|
|
bucketName: bucketName,
|
|
bucketLocation: location,
|
|
}
|
|
|
|
// If location is not 'us-east-1' create bucket location config.
|
|
if location != "us-east-1" && location != "" {
|
|
createBucketConfig := createBucketConfiguration{}
|
|
createBucketConfig.Location = location
|
|
var createBucketConfigBytes []byte
|
|
createBucketConfigBytes, err = xml.Marshal(createBucketConfig)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
reqMetadata.contentMD5Base64 = sumMD5Base64(createBucketConfigBytes)
|
|
reqMetadata.contentSHA256Hex = sum256Hex(createBucketConfigBytes)
|
|
reqMetadata.contentBody = bytes.NewReader(createBucketConfigBytes)
|
|
reqMetadata.contentLength = int64(len(createBucketConfigBytes))
|
|
}
|
|
|
|
// Execute PUT to create a new bucket.
|
|
resp, err := c.executeMethod(context.Background(), "PUT", reqMetadata)
|
|
defer closeResponse(resp)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if resp != nil {
|
|
if resp.StatusCode != http.StatusOK {
|
|
return httpRespToErrorResponse(resp, bucketName, "")
|
|
}
|
|
}
|
|
|
|
// Success.
|
|
return nil
|
|
}
|
|
|
|
// SetBucketPolicy set the access permissions on an existing bucket.
|
|
//
|
|
// For example
|
|
//
|
|
// none - owner gets full access [default].
|
|
// readonly - anonymous get access for everyone at a given object prefix.
|
|
// readwrite - anonymous list/put/delete access to a given object prefix.
|
|
// writeonly - anonymous put/delete access to a given object prefix.
|
|
func (c Client) SetBucketPolicy(bucketName string, objectPrefix string, bucketPolicy policy.BucketPolicy) error {
|
|
// Input validation.
|
|
if err := s3utils.CheckValidBucketName(bucketName); err != nil {
|
|
return err
|
|
}
|
|
if err := s3utils.CheckValidObjectNamePrefix(objectPrefix); err != nil {
|
|
return err
|
|
}
|
|
|
|
if !bucketPolicy.IsValidBucketPolicy() {
|
|
return ErrInvalidArgument(fmt.Sprintf("Invalid bucket policy provided. %s", bucketPolicy))
|
|
}
|
|
|
|
policyInfo, err := c.getBucketPolicy(bucketName)
|
|
errResponse := ToErrorResponse(err)
|
|
if err != nil && errResponse.Code != "NoSuchBucketPolicy" {
|
|
return err
|
|
}
|
|
|
|
if bucketPolicy == policy.BucketPolicyNone && policyInfo.Statements == nil {
|
|
// As the request is for removing policy and the bucket
|
|
// has empty policy statements, just return success.
|
|
return nil
|
|
}
|
|
|
|
policyInfo.Statements = policy.SetPolicy(policyInfo.Statements, bucketPolicy, bucketName, objectPrefix)
|
|
|
|
// Save the updated policies.
|
|
return c.putBucketPolicy(bucketName, policyInfo)
|
|
}
|
|
|
|
// Saves a new bucket policy.
|
|
func (c Client) putBucketPolicy(bucketName string, policyInfo policy.BucketAccessPolicy) error {
|
|
// Input validation.
|
|
if err := s3utils.CheckValidBucketName(bucketName); err != nil {
|
|
return err
|
|
}
|
|
|
|
// If there are no policy statements, we should remove entire policy.
|
|
if len(policyInfo.Statements) == 0 {
|
|
return c.removeBucketPolicy(bucketName)
|
|
}
|
|
|
|
// Get resources properly escaped and lined up before
|
|
// using them in http request.
|
|
urlValues := make(url.Values)
|
|
urlValues.Set("policy", "")
|
|
|
|
policyBytes, err := json.Marshal(&policyInfo)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
policyBuffer := bytes.NewReader(policyBytes)
|
|
reqMetadata := requestMetadata{
|
|
bucketName: bucketName,
|
|
queryValues: urlValues,
|
|
contentBody: policyBuffer,
|
|
contentLength: int64(len(policyBytes)),
|
|
contentMD5Base64: sumMD5Base64(policyBytes),
|
|
contentSHA256Hex: sum256Hex(policyBytes),
|
|
}
|
|
|
|
// Execute PUT to upload a new bucket policy.
|
|
resp, err := c.executeMethod(context.Background(), "PUT", reqMetadata)
|
|
defer closeResponse(resp)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if resp != nil {
|
|
if resp.StatusCode != http.StatusNoContent {
|
|
return httpRespToErrorResponse(resp, bucketName, "")
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Removes all policies on a bucket.
|
|
func (c Client) removeBucketPolicy(bucketName string) error {
|
|
// Input validation.
|
|
if err := s3utils.CheckValidBucketName(bucketName); err != nil {
|
|
return err
|
|
}
|
|
// Get resources properly escaped and lined up before
|
|
// using them in http request.
|
|
urlValues := make(url.Values)
|
|
urlValues.Set("policy", "")
|
|
|
|
// Execute DELETE on objectName.
|
|
resp, err := c.executeMethod(context.Background(), "DELETE", requestMetadata{
|
|
bucketName: bucketName,
|
|
queryValues: urlValues,
|
|
contentSHA256Hex: emptySHA256Hex,
|
|
})
|
|
defer closeResponse(resp)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// SetBucketNotification saves a new bucket notification.
|
|
func (c Client) SetBucketNotification(bucketName string, bucketNotification BucketNotification) error {
|
|
// Input validation.
|
|
if err := s3utils.CheckValidBucketName(bucketName); err != nil {
|
|
return err
|
|
}
|
|
|
|
// Get resources properly escaped and lined up before
|
|
// using them in http request.
|
|
urlValues := make(url.Values)
|
|
urlValues.Set("notification", "")
|
|
|
|
notifBytes, err := xml.Marshal(bucketNotification)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
notifBuffer := bytes.NewReader(notifBytes)
|
|
reqMetadata := requestMetadata{
|
|
bucketName: bucketName,
|
|
queryValues: urlValues,
|
|
contentBody: notifBuffer,
|
|
contentLength: int64(len(notifBytes)),
|
|
contentMD5Base64: sumMD5Base64(notifBytes),
|
|
contentSHA256Hex: sum256Hex(notifBytes),
|
|
}
|
|
|
|
// Execute PUT to upload a new bucket notification.
|
|
resp, err := c.executeMethod(context.Background(), "PUT", reqMetadata)
|
|
defer closeResponse(resp)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if resp != nil {
|
|
if resp.StatusCode != http.StatusOK {
|
|
return httpRespToErrorResponse(resp, bucketName, "")
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// RemoveAllBucketNotification - Remove bucket notification clears all previously specified config
|
|
func (c Client) RemoveAllBucketNotification(bucketName string) error {
|
|
return c.SetBucketNotification(bucketName, BucketNotification{})
|
|
}
|