mirror of
https://github.com/restic/restic.git
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384 lines
11 KiB
Go
384 lines
11 KiB
Go
/*
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* MinIO Go Library for Amazon S3 Compatible Cloud Storage
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* Copyright 2015-2017 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 minio
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import (
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"bytes"
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"context"
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"encoding/xml"
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"io/ioutil"
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"net/http"
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"net/url"
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"strings"
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"github.com/minio/minio-go/v6/pkg/s3utils"
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)
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/// Bucket operations
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func (c Client) makeBucket(bucketName string, location string, objectLockEnabled bool) (err error) {
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defer func() {
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// Save the location into cache on a successful makeBucket response.
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if err == nil {
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c.bucketLocCache.Set(bucketName, location)
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}
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}()
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// Validate the input arguments.
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if err := s3utils.CheckValidBucketNameStrict(bucketName); err != nil {
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return err
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}
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// If location is empty, treat is a default region 'us-east-1'.
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if location == "" {
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location = "us-east-1"
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// For custom region clients, default
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// to custom region instead not 'us-east-1'.
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if c.region != "" {
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location = c.region
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}
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}
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// PUT bucket request metadata.
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reqMetadata := requestMetadata{
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bucketName: bucketName,
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bucketLocation: location,
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}
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if objectLockEnabled {
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headers := make(http.Header)
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headers.Add("x-amz-bucket-object-lock-enabled", "true")
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reqMetadata.customHeader = headers
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}
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// If location is not 'us-east-1' create bucket location config.
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if location != "us-east-1" && location != "" {
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createBucketConfig := createBucketConfiguration{}
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createBucketConfig.Location = location
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var createBucketConfigBytes []byte
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createBucketConfigBytes, err = xml.Marshal(createBucketConfig)
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if err != nil {
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return err
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}
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reqMetadata.contentMD5Base64 = sumMD5Base64(createBucketConfigBytes)
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reqMetadata.contentSHA256Hex = sum256Hex(createBucketConfigBytes)
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reqMetadata.contentBody = bytes.NewReader(createBucketConfigBytes)
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reqMetadata.contentLength = int64(len(createBucketConfigBytes))
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}
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// Execute PUT to create a new bucket.
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resp, err := c.executeMethod(context.Background(), "PUT", reqMetadata)
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defer closeResponse(resp)
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if err != nil {
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return err
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}
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if resp != nil {
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if resp.StatusCode != http.StatusOK {
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return httpRespToErrorResponse(resp, bucketName, "")
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}
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}
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// Success.
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return nil
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}
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// MakeBucket creates a new bucket with bucketName.
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//
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// Location is an optional argument, by default all buckets are
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// created in US Standard Region.
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//
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// For Amazon S3 for more supported regions - http://docs.aws.amazon.com/general/latest/gr/rande.html
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// For Google Cloud Storage for more supported regions - https://cloud.google.com/storage/docs/bucket-locations
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func (c Client) MakeBucket(bucketName string, location string) (err error) {
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return c.makeBucket(bucketName, location, false)
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}
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// MakeBucketWithObjectLock creates a object lock enabled new bucket with bucketName.
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//
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// Location is an optional argument, by default all buckets are
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// created in US Standard Region.
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//
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// For Amazon S3 for more supported regions - http://docs.aws.amazon.com/general/latest/gr/rande.html
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// For Google Cloud Storage for more supported regions - https://cloud.google.com/storage/docs/bucket-locations
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func (c Client) MakeBucketWithObjectLock(bucketName string, location string) (err error) {
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return c.makeBucket(bucketName, location, true)
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}
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// SetBucketPolicy set the access permissions on an existing bucket.
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func (c Client) SetBucketPolicy(bucketName, policy string) error {
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// Input validation.
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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return err
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}
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// If policy is empty then delete the bucket policy.
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if policy == "" {
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return c.removeBucketPolicy(bucketName)
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}
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// Save the updated policies.
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return c.putBucketPolicy(bucketName, policy)
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}
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// Saves a new bucket policy.
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func (c Client) putBucketPolicy(bucketName, policy string) error {
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// Input validation.
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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return err
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}
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// Get resources properly escaped and lined up before
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// using them in http request.
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urlValues := make(url.Values)
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urlValues.Set("policy", "")
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// Content-length is mandatory for put policy request
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policyReader := strings.NewReader(policy)
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b, err := ioutil.ReadAll(policyReader)
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if err != nil {
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return err
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}
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reqMetadata := requestMetadata{
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bucketName: bucketName,
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queryValues: urlValues,
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contentBody: policyReader,
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contentLength: int64(len(b)),
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}
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// Execute PUT to upload a new bucket policy.
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resp, err := c.executeMethod(context.Background(), "PUT", reqMetadata)
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defer closeResponse(resp)
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if err != nil {
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return err
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}
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if resp != nil {
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if resp.StatusCode != http.StatusNoContent {
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return httpRespToErrorResponse(resp, bucketName, "")
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}
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}
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return nil
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}
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// Removes all policies on a bucket.
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func (c Client) removeBucketPolicy(bucketName string) error {
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// Input validation.
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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return err
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}
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// Get resources properly escaped and lined up before
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// using them in http request.
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urlValues := make(url.Values)
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urlValues.Set("policy", "")
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// Execute DELETE on objectName.
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resp, err := c.executeMethod(context.Background(), "DELETE", requestMetadata{
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bucketName: bucketName,
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queryValues: urlValues,
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contentSHA256Hex: emptySHA256Hex,
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})
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defer closeResponse(resp)
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if err != nil {
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return err
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}
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return nil
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}
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// SetBucketLifecycle set the lifecycle on an existing bucket.
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func (c Client) SetBucketLifecycle(bucketName, lifecycle string) error {
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// Input validation.
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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return err
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}
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// If lifecycle is empty then delete it.
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if lifecycle == "" {
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return c.removeBucketLifecycle(bucketName)
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}
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// Save the updated lifecycle.
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return c.putBucketLifecycle(bucketName, lifecycle)
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}
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// Saves a new bucket lifecycle.
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func (c Client) putBucketLifecycle(bucketName, lifecycle string) error {
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// Input validation.
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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return err
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}
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// Get resources properly escaped and lined up before
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// using them in http request.
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urlValues := make(url.Values)
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urlValues.Set("lifecycle", "")
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// Content-length is mandatory for put lifecycle request
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lifecycleReader := strings.NewReader(lifecycle)
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b, err := ioutil.ReadAll(lifecycleReader)
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if err != nil {
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return err
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}
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reqMetadata := requestMetadata{
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bucketName: bucketName,
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queryValues: urlValues,
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contentBody: lifecycleReader,
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contentLength: int64(len(b)),
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contentMD5Base64: sumMD5Base64(b),
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}
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// Execute PUT to upload a new bucket lifecycle.
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resp, err := c.executeMethod(context.Background(), "PUT", reqMetadata)
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defer closeResponse(resp)
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if err != nil {
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return err
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}
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if resp != nil {
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if resp.StatusCode != http.StatusOK {
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return httpRespToErrorResponse(resp, bucketName, "")
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}
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}
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return nil
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}
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// Remove lifecycle from a bucket.
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func (c Client) removeBucketLifecycle(bucketName string) error {
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// Input validation.
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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return err
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}
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// Get resources properly escaped and lined up before
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// using them in http request.
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urlValues := make(url.Values)
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urlValues.Set("lifecycle", "")
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// Execute DELETE on objectName.
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resp, err := c.executeMethod(context.Background(), "DELETE", requestMetadata{
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bucketName: bucketName,
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queryValues: urlValues,
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contentSHA256Hex: emptySHA256Hex,
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})
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defer closeResponse(resp)
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if err != nil {
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return err
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}
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return nil
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}
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// SetBucketNotification saves a new bucket notification.
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func (c Client) SetBucketNotification(bucketName string, bucketNotification BucketNotification) error {
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// Input validation.
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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return err
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}
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// Get resources properly escaped and lined up before
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// using them in http request.
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urlValues := make(url.Values)
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urlValues.Set("notification", "")
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notifBytes, err := xml.Marshal(bucketNotification)
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if err != nil {
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return err
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}
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notifBuffer := bytes.NewReader(notifBytes)
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reqMetadata := requestMetadata{
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bucketName: bucketName,
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queryValues: urlValues,
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contentBody: notifBuffer,
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contentLength: int64(len(notifBytes)),
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contentMD5Base64: sumMD5Base64(notifBytes),
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contentSHA256Hex: sum256Hex(notifBytes),
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}
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// Execute PUT to upload a new bucket notification.
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resp, err := c.executeMethod(context.Background(), "PUT", reqMetadata)
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defer closeResponse(resp)
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if err != nil {
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return err
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}
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if resp != nil {
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if resp.StatusCode != http.StatusOK {
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return httpRespToErrorResponse(resp, bucketName, "")
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}
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}
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return nil
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}
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// RemoveAllBucketNotification - Remove bucket notification clears all previously specified config
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func (c Client) RemoveAllBucketNotification(bucketName string) error {
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return c.SetBucketNotification(bucketName, BucketNotification{})
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}
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var (
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versionEnableConfig = []byte("<VersioningConfiguration xmlns=\"http://s3.amazonaws.com/doc/2006-03-01/\"><Status>Enabled</Status></VersioningConfiguration>")
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versionEnableConfigLen = int64(len(versionEnableConfig))
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versionEnableConfigMD5Sum = sumMD5Base64(versionEnableConfig)
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versionEnableConfigSHA256 = sum256Hex(versionEnableConfig)
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versionDisableConfig = []byte("<VersioningConfiguration xmlns=\"http://s3.amazonaws.com/doc/2006-03-01/\"><Status>Suspended</Status></VersioningConfiguration>")
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versionDisableConfigLen = int64(len(versionDisableConfig))
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versionDisableConfigMD5Sum = sumMD5Base64(versionDisableConfig)
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versionDisableConfigSHA256 = sum256Hex(versionDisableConfig)
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)
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func (c Client) setVersioning(bucketName string, config []byte, length int64, md5sum, sha256sum string) error {
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// Input validation.
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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return err
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}
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// Get resources properly escaped and lined up before
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// using them in http request.
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urlValues := make(url.Values)
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urlValues.Set("versioning", "")
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reqMetadata := requestMetadata{
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bucketName: bucketName,
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queryValues: urlValues,
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contentBody: bytes.NewReader(config),
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contentLength: length,
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contentMD5Base64: md5sum,
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contentSHA256Hex: sha256sum,
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}
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// Execute PUT to set a bucket versioning.
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resp, err := c.executeMethod(context.Background(), "PUT", reqMetadata)
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defer closeResponse(resp)
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if err != nil {
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return err
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}
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if resp != nil {
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if resp.StatusCode != http.StatusOK {
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return httpRespToErrorResponse(resp, bucketName, "")
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}
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}
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return nil
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}
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// EnableVersioning - Enable object versioning in given bucket.
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func (c Client) EnableVersioning(bucketName string) error {
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return c.setVersioning(bucketName, versionEnableConfig, versionEnableConfigLen, versionEnableConfigMD5Sum, versionEnableConfigSHA256)
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}
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// DisableVersioning - Disable object versioning in given bucket.
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func (c Client) DisableVersioning(bucketName string) error {
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return c.setVersioning(bucketName, versionDisableConfig, versionDisableConfigLen, versionDisableConfigMD5Sum, versionDisableConfigSHA256)
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}
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