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Copy pathbucket-handlers.go
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793 lines (687 loc) · 24.7 KB
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/*
* Minio Cloud Storage, (C) 2015, 2016, 2017, 2018 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 cmd
import (
"context"
"encoding/base64"
"encoding/xml"
"fmt"
"io"
"net"
"net/http"
"net/url"
"path"
"path/filepath"
"strings"
"github.com/gorilla/mux"
"github.com/minio/minio-go/pkg/set"
"github.com/minio/minio/cmd/crypto"
"github.com/minio/minio/cmd/logger"
"github.com/minio/minio/pkg/dns"
"github.com/minio/minio/pkg/event"
"github.com/minio/minio/pkg/handlers"
"github.com/minio/minio/pkg/hash"
"github.com/minio/minio/pkg/policy"
"github.com/minio/minio/pkg/sync/errgroup"
)
// Check if there are buckets on server without corresponding entry in etcd backend and
// make entries. Here is the general flow
// - Range over all the available buckets
// - Check if a bucket has an entry in etcd backend
// -- If no, make an entry
// -- If yes, check if the IP of entry matches local IP. This means entry is for this instance.
// -- If IP of the entry doesn't match, this means entry is for another instance. Log an error to console.
func initFederatorBackend(objLayer ObjectLayer) {
b, err := objLayer.ListBuckets(context.Background())
if err != nil {
logger.LogIf(context.Background(), err)
return
}
g := errgroup.WithNErrs(len(b))
for index := range b {
index := index
g.Go(func() error {
r, gerr := globalDNSConfig.Get(b[index].Name)
if gerr != nil {
if gerr == dns.ErrNoEntriesFound {
return globalDNSConfig.Put(b[index].Name)
}
return gerr
}
if globalDomainIPs.Intersection(set.CreateStringSet(getHostsSlice(r)...)).IsEmpty() {
// There is already an entry for this bucket, with all IP addresses different. This indicates a bucket name collision. Log an error and continue.
return fmt.Errorf("Unable to add bucket DNS entry for bucket %s, an entry exists for the same bucket. Use one of these IP addresses %v to access the bucket", b[index].Name, globalDomainIPs.ToSlice())
}
return nil
}, index)
}
for _, err := range g.Wait() {
if err != nil {
logger.LogIf(context.Background(), err)
return
}
}
}
// GetBucketLocationHandler - GET Bucket location.
// -------------------------
// This operation returns bucket location.
func (api objectAPIHandlers) GetBucketLocationHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "GetBucketLocation")
defer logger.AuditLog(w, r, "GetBucketLocation", mustGetClaimsFromToken(r))
vars := mux.Vars(r)
bucket := vars["bucket"]
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL, guessIsBrowserReq(r))
return
}
if s3Error := checkRequestAuthType(ctx, r, policy.GetBucketLocationAction, bucket, ""); s3Error != ErrNone {
writeErrorResponse(w, s3Error, r.URL, guessIsBrowserReq(r))
return
}
getBucketInfo := objectAPI.GetBucketInfo
if api.CacheAPI() != nil {
getBucketInfo = api.CacheAPI().GetBucketInfo
}
if _, err := getBucketInfo(ctx, bucket); err != nil {
writeErrorResponse(w, toAPIErrorCode(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Generate response.
encodedSuccessResponse := encodeResponse(LocationResponse{})
// Get current region.
region := globalServerConfig.GetRegion()
if region != globalMinioDefaultRegion {
encodedSuccessResponse = encodeResponse(LocationResponse{
Location: region,
})
}
// Write success response.
writeSuccessResponseXML(w, encodedSuccessResponse)
}
// ListMultipartUploadsHandler - GET Bucket (List Multipart uploads)
// -------------------------
// This operation lists in-progress multipart uploads. An in-progress
// multipart upload is a multipart upload that has been initiated,
// using the Initiate Multipart Upload request, but has not yet been
// completed or aborted. This operation returns at most 1,000 multipart
// uploads in the response.
//
func (api objectAPIHandlers) ListMultipartUploadsHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "ListMultipartUploads")
defer logger.AuditLog(w, r, "ListMultipartUploads", mustGetClaimsFromToken(r))
vars := mux.Vars(r)
bucket := vars["bucket"]
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL, guessIsBrowserReq(r))
return
}
if s3Error := checkRequestAuthType(ctx, r, policy.ListBucketMultipartUploadsAction, bucket, ""); s3Error != ErrNone {
writeErrorResponse(w, s3Error, r.URL, guessIsBrowserReq(r))
return
}
prefix, keyMarker, uploadIDMarker, delimiter, maxUploads, _, s3Error := getBucketMultipartResources(r.URL.Query())
if s3Error != ErrNone {
writeErrorResponse(w, s3Error, r.URL, guessIsBrowserReq(r))
return
}
if maxUploads < 0 {
writeErrorResponse(w, ErrInvalidMaxUploads, r.URL, guessIsBrowserReq(r))
return
}
if keyMarker != "" {
// Marker not common with prefix is not implemented.
if !hasPrefix(keyMarker, prefix) {
writeErrorResponse(w, ErrNotImplemented, r.URL, guessIsBrowserReq(r))
return
}
}
listMultipartsInfo, err := objectAPI.ListMultipartUploads(ctx, bucket, prefix, keyMarker, uploadIDMarker, delimiter, maxUploads)
if err != nil {
writeErrorResponse(w, toAPIErrorCode(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// generate response
response := generateListMultipartUploadsResponse(bucket, listMultipartsInfo)
encodedSuccessResponse := encodeResponse(response)
// write success response.
writeSuccessResponseXML(w, encodedSuccessResponse)
}
// ListBucketsHandler - GET Service.
// -----------
// This implementation of the GET operation returns a list of all buckets
// owned by the authenticated sender of the request.
func (api objectAPIHandlers) ListBucketsHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "ListBuckets")
defer logger.AuditLog(w, r, "ListBuckets", mustGetClaimsFromToken(r))
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL, guessIsBrowserReq(r))
return
}
listBuckets := objectAPI.ListBuckets
if api.CacheAPI() != nil {
listBuckets = api.CacheAPI().ListBuckets
}
if s3Error := checkRequestAuthType(ctx, r, policy.ListAllMyBucketsAction, "", ""); s3Error != ErrNone {
writeErrorResponse(w, s3Error, r.URL, guessIsBrowserReq(r))
return
}
// If etcd, dns federation configured list buckets from etcd.
var bucketsInfo []BucketInfo
if globalDNSConfig != nil {
dnsBuckets, err := globalDNSConfig.List()
if err != nil && err != dns.ErrNoEntriesFound {
writeErrorResponse(w, toAPIErrorCode(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
bucketSet := set.NewStringSet()
for _, dnsRecord := range dnsBuckets {
if bucketSet.Contains(dnsRecord.Key) {
continue
}
bucketsInfo = append(bucketsInfo, BucketInfo{
Name: strings.Trim(dnsRecord.Key, slashSeparator),
Created: dnsRecord.CreationDate,
})
bucketSet.Add(dnsRecord.Key)
}
} else {
// Invoke the list buckets.
var err error
bucketsInfo, err = listBuckets(ctx)
if err != nil {
writeErrorResponse(w, toAPIErrorCode(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
// Generate response.
response := generateListBucketsResponse(bucketsInfo)
encodedSuccessResponse := encodeResponse(response)
// Write response.
writeSuccessResponseXML(w, encodedSuccessResponse)
}
// DeleteMultipleObjectsHandler - deletes multiple objects.
func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "DeleteMultipleObjects")
defer logger.AuditLog(w, r, "DeleteMultipleObjects", mustGetClaimsFromToken(r))
vars := mux.Vars(r)
bucket := vars["bucket"]
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL, guessIsBrowserReq(r))
return
}
var s3Error APIErrorCode
if s3Error = checkRequestAuthType(ctx, r, policy.DeleteObjectAction, bucket, ""); s3Error != ErrNone {
// In the event access is denied, a 200 response should still be returned
// http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html
if s3Error != ErrAccessDenied {
writeErrorResponse(w, s3Error, r.URL, guessIsBrowserReq(r))
return
}
}
// Content-Length is required and should be non-zero
// http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html
if r.ContentLength <= 0 {
writeErrorResponse(w, ErrMissingContentLength, r.URL, guessIsBrowserReq(r))
return
}
// Content-Md5 is requied should be set
// http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html
if _, ok := r.Header["Content-Md5"]; !ok {
writeErrorResponse(w, ErrMissingContentMD5, r.URL, guessIsBrowserReq(r))
return
}
// Allocate incoming content length bytes.
var deleteXMLBytes []byte
const maxBodySize = 2 * 1000 * 1024 // The max. XML contains 1000 object names (each at most 1024 bytes long) + XML overhead
if r.ContentLength > maxBodySize { // Only allocated memory for at most 1000 objects
deleteXMLBytes = make([]byte, maxBodySize)
} else {
deleteXMLBytes = make([]byte, r.ContentLength)
}
// Read incoming body XML bytes.
if _, err := io.ReadFull(r.Body, deleteXMLBytes); err != nil {
logger.LogIf(ctx, err)
writeErrorResponse(w, ErrInternalError, r.URL, guessIsBrowserReq(r))
return
}
// Unmarshal list of keys to be deleted.
deleteObjects := &DeleteObjectsRequest{}
if err := xml.Unmarshal(deleteXMLBytes, deleteObjects); err != nil {
logger.LogIf(ctx, err)
writeErrorResponse(w, ErrMalformedXML, r.URL, guessIsBrowserReq(r))
return
}
// Deny if WORM is enabled
if globalWORMEnabled {
// Not required to check whether given objects exist or not, because
// DeleteMultipleObject is always successful irrespective of object existence.
writeErrorResponse(w, ErrMethodNotAllowed, r.URL, guessIsBrowserReq(r))
return
}
deleteObject := objectAPI.DeleteObject
if api.CacheAPI() != nil {
deleteObject = api.CacheAPI().DeleteObject
}
var dErrs = make([]error, len(deleteObjects.Objects))
for index, object := range deleteObjects.Objects {
// If the request is denied access, each item
// should be marked as 'AccessDenied'
if s3Error == ErrAccessDenied {
dErrs[index] = PrefixAccessDenied{
Bucket: bucket,
Object: object.ObjectName,
}
continue
}
dErrs[index] = deleteObject(ctx, bucket, object.ObjectName)
}
// Collect deleted objects and errors if any.
var deletedObjects []ObjectIdentifier
var deleteErrors []DeleteError
for index, err := range dErrs {
object := deleteObjects.Objects[index]
// Success deleted objects are collected separately.
if err == nil {
deletedObjects = append(deletedObjects, object)
continue
}
if _, ok := err.(ObjectNotFound); ok {
// If the object is not found it should be
// accounted as deleted as per S3 spec.
deletedObjects = append(deletedObjects, object)
continue
}
// Error during delete should be collected separately.
deleteErrors = append(deleteErrors, DeleteError{
Code: errorCodeResponse[toAPIErrorCode(ctx, err)].Code,
Message: errorCodeResponse[toAPIErrorCode(ctx, err)].Description,
Key: object.ObjectName,
})
}
// Generate response
response := generateMultiDeleteResponse(deleteObjects.Quiet, deletedObjects, deleteErrors)
encodedSuccessResponse := encodeResponse(response)
// Write success response.
writeSuccessResponseXML(w, encodedSuccessResponse)
// Get host and port from Request.RemoteAddr failing which
// fill them with empty strings.
host, port, err := net.SplitHostPort(handlers.GetSourceIP(r))
if err != nil {
host, port = "", ""
}
// Notify deleted event for objects.
for _, dobj := range deletedObjects {
sendEvent(eventArgs{
EventName: event.ObjectRemovedDelete,
BucketName: bucket,
Object: ObjectInfo{
Name: dobj.ObjectName,
},
ReqParams: extractReqParams(r),
RespElements: extractRespElements(w),
UserAgent: r.UserAgent(),
Host: host,
Port: port,
})
}
}
// PutBucketHandler - PUT Bucket
// ----------
// This implementation of the PUT operation creates a new bucket for authenticated request
func (api objectAPIHandlers) PutBucketHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "PutBucket")
defer logger.AuditLog(w, r, "PutBucket", mustGetClaimsFromToken(r))
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL, guessIsBrowserReq(r))
return
}
vars := mux.Vars(r)
bucket := vars["bucket"]
if s3Error := checkRequestAuthType(ctx, r, policy.CreateBucketAction, bucket, ""); s3Error != ErrNone {
writeErrorResponse(w, s3Error, r.URL, guessIsBrowserReq(r))
return
}
// Parse incoming location constraint.
location, s3Error := parseLocationConstraint(r)
if s3Error != ErrNone {
writeErrorResponse(w, s3Error, r.URL, guessIsBrowserReq(r))
return
}
// Validate if location sent by the client is valid, reject
// requests which do not follow valid region requirements.
if !isValidLocation(location) {
writeErrorResponse(w, ErrInvalidRegion, r.URL, guessIsBrowserReq(r))
return
}
if globalDNSConfig != nil {
if _, err := globalDNSConfig.Get(bucket); err != nil {
if err == dns.ErrNoEntriesFound {
// Proceed to creating a bucket.
if err = objectAPI.MakeBucketWithLocation(ctx, bucket, location); err != nil {
writeErrorResponse(w, toAPIErrorCode(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
if err = globalDNSConfig.Put(bucket); err != nil {
objectAPI.DeleteBucket(ctx, bucket)
writeErrorResponse(w, toAPIErrorCode(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Make sure to add Location information here only for bucket
w.Header().Set("Location", getObjectLocation(r, globalDomainName, bucket, ""))
writeSuccessResponseHeadersOnly(w)
return
}
writeErrorResponse(w, toAPIErrorCode(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
writeErrorResponse(w, ErrBucketAlreadyOwnedByYou, r.URL, guessIsBrowserReq(r))
return
}
// Proceed to creating a bucket.
err := objectAPI.MakeBucketWithLocation(ctx, bucket, location)
if err != nil {
writeErrorResponse(w, toAPIErrorCode(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
// Make sure to add Location information here only for bucket
w.Header().Set("Location", path.Clean(r.URL.Path)) // Clean any trailing slashes.
writeSuccessResponseHeadersOnly(w)
}
// PostPolicyBucketHandler - POST policy
// ----------
// This implementation of the POST operation handles object creation with a specified
// signature policy in multipart/form-data
func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "PostPolicyBucket")
defer logger.AuditLog(w, r, "PostPolicyBucket", mustGetClaimsFromToken(r))
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL, guessIsBrowserReq(r))
return
}
if crypto.S3KMS.IsRequested(r.Header) { // SSE-KMS is not supported
writeErrorResponse(w, ErrNotImplemented, r.URL, guessIsBrowserReq(r))
return
}
if !objectAPI.IsEncryptionSupported() && hasServerSideEncryptionHeader(r.Header) {
writeErrorResponse(w, ErrNotImplemented, r.URL, guessIsBrowserReq(r))
return
}
bucket := mux.Vars(r)["bucket"]
// Require Content-Length to be set in the request
size := r.ContentLength
if size < 0 {
writeErrorResponse(w, ErrMissingContentLength, r.URL, guessIsBrowserReq(r))
return
}
resource, err := getResource(r.URL.Path, r.Host, globalDomainName)
if err != nil {
writeErrorResponse(w, ErrInvalidRequest, r.URL, guessIsBrowserReq(r))
return
}
// Make sure that the URL does not contain object name.
if bucket != filepath.Clean(resource[1:]) {
writeErrorResponse(w, ErrMethodNotAllowed, r.URL, guessIsBrowserReq(r))
return
}
// Here the parameter is the size of the form data that should
// be loaded in memory, the remaining being put in temporary files.
reader, err := r.MultipartReader()
if err != nil {
logger.LogIf(ctx, err)
writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL, guessIsBrowserReq(r))
return
}
// Read multipart data and save in memory and in the disk if needed
form, err := reader.ReadForm(maxFormMemory)
if err != nil {
logger.LogIf(ctx, err)
writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL, guessIsBrowserReq(r))
return
}
// Remove all tmp files creating during multipart upload
defer form.RemoveAll()
// Extract all form fields
fileBody, fileName, fileSize, formValues, err := extractPostPolicyFormValues(ctx, form)
if err != nil {
logger.LogIf(ctx, err)
writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL, guessIsBrowserReq(r))
return
}
// Check if file is provided, error out otherwise.
if fileBody == nil {
writeErrorResponse(w, ErrPOSTFileRequired, r.URL, guessIsBrowserReq(r))
return
}
// Close multipart file
defer fileBody.Close()
formValues.Set("Bucket", bucket)
if fileName != "" && strings.Contains(formValues.Get("Key"), "${filename}") {
// S3 feature to replace ${filename} found in Key form field
// by the filename attribute passed in multipart
formValues.Set("Key", strings.Replace(formValues.Get("Key"), "${filename}", fileName, -1))
}
object := formValues.Get("Key")
successRedirect := formValues.Get("success_action_redirect")
successStatus := formValues.Get("success_action_status")
var redirectURL *url.URL
if successRedirect != "" {
redirectURL, err = url.Parse(successRedirect)
if err != nil {
writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL, guessIsBrowserReq(r))
return
}
}
// Verify policy signature.
apiErr := doesPolicySignatureMatch(formValues)
if apiErr != ErrNone {
writeErrorResponse(w, apiErr, r.URL, guessIsBrowserReq(r))
return
}
policyBytes, err := base64.StdEncoding.DecodeString(formValues.Get("Policy"))
if err != nil {
writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL, guessIsBrowserReq(r))
return
}
// Handle policy if it is set.
if len(policyBytes) > 0 {
postPolicyForm, err := parsePostPolicyForm(string(policyBytes))
if err != nil {
writeErrorResponse(w, ErrMalformedPOSTRequest, r.URL, guessIsBrowserReq(r))
return
}
// Make sure formValues adhere to policy restrictions.
if apiErr = checkPostPolicy(formValues, postPolicyForm); apiErr != ErrNone {
writeErrorResponse(w, apiErr, r.URL, guessIsBrowserReq(r))
return
}
// Ensure that the object size is within expected range, also the file size
// should not exceed the maximum single Put size (5 GiB)
lengthRange := postPolicyForm.Conditions.ContentLengthRange
if lengthRange.Valid {
if fileSize < lengthRange.Min {
writeErrorResponse(w, toAPIErrorCode(ctx, errDataTooSmall), r.URL, guessIsBrowserReq(r))
return
}
if fileSize > lengthRange.Max || isMaxObjectSize(fileSize) {
writeErrorResponse(w, toAPIErrorCode(ctx, errDataTooLarge), r.URL, guessIsBrowserReq(r))
return
}
}
}
// Extract metadata to be saved from received Form.
metadata := make(map[string]string)
err = extractMetadataFromMap(ctx, formValues, metadata)
if err != nil {
writeErrorResponse(w, ErrInternalError, r.URL, guessIsBrowserReq(r))
return
}
hashReader, err := hash.NewReader(fileBody, fileSize, "", "", fileSize)
if err != nil {
logger.LogIf(ctx, err)
writeErrorResponse(w, toAPIErrorCode(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
rawReader := hashReader
pReader := NewPutObjReader(rawReader, nil, nil)
var objectEncryptionKey []byte
if globalAutoEncryption && !crypto.SSEC.IsRequested(r.Header) {
r.Header.Add(crypto.SSEHeader, crypto.SSEAlgorithmAES256)
}
if objectAPI.IsEncryptionSupported() {
if hasServerSideEncryptionHeader(formValues) && !hasSuffix(object, slashSeparator) { // handle SSE-C and SSE-S3 requests
var reader io.Reader
var key []byte
if crypto.SSEC.IsRequested(formValues) {
key, err = ParseSSECustomerHeader(formValues)
if err != nil {
writeErrorResponse(w, toAPIErrorCode(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
reader, objectEncryptionKey, err = newEncryptReader(hashReader, key, bucket, object, metadata, crypto.S3.IsRequested(formValues))
if err != nil {
writeErrorResponse(w, toAPIErrorCode(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
info := ObjectInfo{Size: fileSize}
hashReader, err = hash.NewReader(reader, info.EncryptedSize(), "", "", fileSize) // do not try to verify encrypted content
if err != nil {
writeErrorResponse(w, toAPIErrorCode(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
pReader = NewPutObjReader(rawReader, hashReader, objectEncryptionKey)
}
}
objInfo, err := objectAPI.PutObject(ctx, bucket, object, pReader, metadata, ObjectOptions{})
if err != nil {
writeErrorResponse(w, toAPIErrorCode(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
location := getObjectLocation(r, globalDomainName, bucket, object)
w.Header().Set("ETag", `"`+objInfo.ETag+`"`)
w.Header().Set("Location", location)
// Get host and port from Request.RemoteAddr.
host, port, err := net.SplitHostPort(handlers.GetSourceIP(r))
if err != nil {
host, port = "", ""
}
// Notify object created event.
defer sendEvent(eventArgs{
EventName: event.ObjectCreatedPost,
BucketName: objInfo.Bucket,
Object: objInfo,
ReqParams: extractReqParams(r),
RespElements: extractRespElements(w),
UserAgent: r.UserAgent(),
Host: host,
Port: port,
})
if successRedirect != "" {
// Replace raw query params..
redirectURL.RawQuery = getRedirectPostRawQuery(objInfo)
writeRedirectSeeOther(w, redirectURL.String())
return
}
// Decide what http response to send depending on success_action_status parameter
switch successStatus {
case "201":
resp := encodeResponse(PostResponse{
Bucket: objInfo.Bucket,
Key: objInfo.Name,
ETag: `"` + objInfo.ETag + `"`,
Location: location,
})
writeResponse(w, http.StatusCreated, resp, "application/xml")
case "200":
writeSuccessResponseHeadersOnly(w)
default:
writeSuccessNoContent(w)
}
}
// HeadBucketHandler - HEAD Bucket
// ----------
// This operation is useful to determine if a bucket exists.
// The operation returns a 200 OK if the bucket exists and you
// have permission to access it. Otherwise, the operation might
// return responses such as 404 Not Found and 403 Forbidden.
func (api objectAPIHandlers) HeadBucketHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "HeadBucket")
defer logger.AuditLog(w, r, "HeadBucket", mustGetClaimsFromToken(r))
vars := mux.Vars(r)
bucket := vars["bucket"]
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponseHeadersOnly(w, ErrServerNotInitialized)
return
}
if s3Error := checkRequestAuthType(ctx, r, policy.ListBucketAction, bucket, ""); s3Error != ErrNone {
writeErrorResponseHeadersOnly(w, s3Error)
return
}
getBucketInfo := objectAPI.GetBucketInfo
if api.CacheAPI() != nil {
getBucketInfo = api.CacheAPI().GetBucketInfo
}
if _, err := getBucketInfo(ctx, bucket); err != nil {
writeErrorResponseHeadersOnly(w, toAPIErrorCode(ctx, err))
return
}
writeSuccessResponseHeadersOnly(w)
}
// DeleteBucketHandler - Delete bucket
func (api objectAPIHandlers) DeleteBucketHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "DeleteBucket")
defer logger.AuditLog(w, r, "DeleteBucket", mustGetClaimsFromToken(r))
vars := mux.Vars(r)
bucket := vars["bucket"]
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(w, ErrServerNotInitialized, r.URL, guessIsBrowserReq(r))
return
}
if s3Error := checkRequestAuthType(ctx, r, policy.DeleteBucketAction, bucket, ""); s3Error != ErrNone {
writeErrorResponse(w, s3Error, r.URL, guessIsBrowserReq(r))
return
}
deleteBucket := objectAPI.DeleteBucket
if api.CacheAPI() != nil {
deleteBucket = api.CacheAPI().DeleteBucket
}
// Attempt to delete bucket.
if err := deleteBucket(ctx, bucket); err != nil {
writeErrorResponse(w, toAPIErrorCode(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
globalNotificationSys.RemoveNotification(bucket)
globalPolicySys.Remove(bucket)
globalNotificationSys.DeleteBucket(ctx, bucket)
if globalDNSConfig != nil {
if err := globalDNSConfig.Delete(bucket); err != nil {
// Deleting DNS entry failed, attempt to create the bucket again.
objectAPI.MakeBucketWithLocation(ctx, bucket, "")
writeErrorResponse(w, toAPIErrorCode(ctx, err), r.URL, guessIsBrowserReq(r))
return
}
}
// Write success response.
writeSuccessNoContent(w)
}