mirror of
https://github.com/go-gitea/gitea
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143 lines
3.8 KiB
Go
143 lines
3.8 KiB
Go
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/*
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* MinIO Go Library for Amazon S3 Compatible Cloud Storage
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* Copyright 2020 MinIO, Inc.
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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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"context"
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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/v7/pkg/s3utils"
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)
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// SetBucketPolicy sets the access permissions on an existing bucket.
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func (c Client) SetBucketPolicy(ctx context.Context, 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(ctx, bucketName)
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}
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// Save the updated policies.
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return c.putBucketPolicy(ctx, bucketName, policy)
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}
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// Saves a new bucket policy.
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func (c Client) putBucketPolicy(ctx context.Context, bucketName, policy string) error {
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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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reqMetadata := requestMetadata{
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bucketName: bucketName,
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queryValues: urlValues,
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contentBody: strings.NewReader(policy),
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contentLength: int64(len(policy)),
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}
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// Execute PUT to upload a new bucket policy.
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resp, err := c.executeMethod(ctx, http.MethodPut, 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(ctx context.Context, bucketName string) error {
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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(ctx, http.MethodDelete, 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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// GetBucketPolicy returns the current policy
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func (c Client) GetBucketPolicy(ctx context.Context, bucketName string) (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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bucketPolicy, err := c.getBucketPolicy(ctx, bucketName)
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if err != nil {
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errResponse := ToErrorResponse(err)
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if errResponse.Code == "NoSuchBucketPolicy" {
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return "", nil
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}
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return "", err
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}
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return bucketPolicy, nil
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}
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// Request server for current bucket policy.
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func (c Client) getBucketPolicy(ctx context.Context, bucketName string) (string, error) {
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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 GET on bucket to list objects.
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resp, err := c.executeMethod(ctx, http.MethodGet, 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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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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bucketPolicyBuf, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return "", err
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}
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policy := string(bucketPolicyBuf)
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return policy, err
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}
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