mirror of
https://github.com/minio/minio.git
synced 2024-12-25 22:55:54 -05:00
ff4ce0ee14
Repeated code around both object layers are moved and combined into simple re-usable functions.
525 lines
16 KiB
Go
525 lines
16 KiB
Go
/*
|
|
* Minio Cloud Storage, (C) 2015, 2016 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 (
|
|
"encoding/base64"
|
|
"encoding/xml"
|
|
"io"
|
|
"net/http"
|
|
"net/url"
|
|
"strings"
|
|
"sync"
|
|
|
|
mux "github.com/gorilla/mux"
|
|
"github.com/minio/minio-go/pkg/set"
|
|
)
|
|
|
|
// http://docs.aws.amazon.com/AmazonS3/latest/dev/using-with-s3-actions.html
|
|
// Enforces bucket policies for a bucket for a given tatusaction.
|
|
func enforceBucketPolicy(bucket string, action string, reqURL *url.URL) (s3Error APIErrorCode) {
|
|
// Verify if bucket actually exists
|
|
if err := checkBucketExist(bucket, newObjectLayerFn()); err != nil {
|
|
err = errorCause(err)
|
|
switch err.(type) {
|
|
case BucketNameInvalid:
|
|
// Return error for invalid bucket name.
|
|
return ErrInvalidBucketName
|
|
case BucketNotFound:
|
|
// For no bucket found we return NoSuchBucket instead.
|
|
return ErrNoSuchBucket
|
|
}
|
|
errorIf(err, "Unable to read bucket policy.")
|
|
// Return internal error for any other errors so that we can investigate.
|
|
return ErrInternalError
|
|
}
|
|
|
|
// Fetch bucket policy, if policy is not set return access denied.
|
|
policy := globalBucketPolicies.GetBucketPolicy(bucket)
|
|
if policy == nil {
|
|
return ErrAccessDenied
|
|
}
|
|
|
|
// Construct resource in 'arn:aws:s3:::examplebucket/object' format.
|
|
resource := AWSResourcePrefix + strings.TrimSuffix(strings.TrimPrefix(reqURL.Path, "/"), "/")
|
|
|
|
// Get conditions for policy verification.
|
|
conditionKeyMap := make(map[string]set.StringSet)
|
|
for queryParam := range reqURL.Query() {
|
|
conditionKeyMap[queryParam] = set.CreateStringSet(reqURL.Query().Get(queryParam))
|
|
}
|
|
|
|
// Validate action, resource and conditions with current policy statements.
|
|
if !bucketPolicyEvalStatements(action, resource, conditionKeyMap, policy.Statements) {
|
|
return ErrAccessDenied
|
|
}
|
|
return ErrNone
|
|
}
|
|
|
|
// GetBucketLocationHandler - GET Bucket location.
|
|
// -------------------------
|
|
// This operation returns bucket location.
|
|
func (api objectAPIHandlers) GetBucketLocationHandler(w http.ResponseWriter, r *http.Request) {
|
|
vars := mux.Vars(r)
|
|
bucket := vars["bucket"]
|
|
|
|
objectAPI := api.ObjectAPI()
|
|
if objectAPI == nil {
|
|
writeErrorResponse(w, r, ErrServerNotInitialized, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
if s3Error := checkRequestAuthType(r, bucket, "s3:GetBucketLocation", "us-east-1"); s3Error != ErrNone {
|
|
writeErrorResponse(w, r, s3Error, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
if _, err := objectAPI.GetBucketInfo(bucket); err != nil {
|
|
errorIf(err, "Unable to fetch bucket info.")
|
|
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
|
|
return
|
|
}
|
|
|
|
// Generate response.
|
|
encodedSuccessResponse := encodeResponse(LocationResponse{})
|
|
// Get current region.
|
|
region := serverConfig.GetRegion()
|
|
if region != "us-east-1" {
|
|
encodedSuccessResponse = encodeResponse(LocationResponse{
|
|
Location: region,
|
|
})
|
|
}
|
|
setCommonHeaders(w) // Write headers.
|
|
writeSuccessResponse(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) {
|
|
vars := mux.Vars(r)
|
|
bucket := vars["bucket"]
|
|
|
|
objectAPI := api.ObjectAPI()
|
|
if objectAPI == nil {
|
|
writeErrorResponse(w, r, ErrServerNotInitialized, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
if s3Error := checkRequestAuthType(r, bucket, "s3:ListBucketMultipartUploads", serverConfig.GetRegion()); s3Error != ErrNone {
|
|
writeErrorResponse(w, r, s3Error, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
prefix, keyMarker, uploadIDMarker, delimiter, maxUploads, _ := getBucketMultipartResources(r.URL.Query())
|
|
if maxUploads < 0 {
|
|
writeErrorResponse(w, r, ErrInvalidMaxUploads, r.URL.Path)
|
|
return
|
|
}
|
|
if keyMarker != "" {
|
|
// Marker not common with prefix is not implemented.
|
|
if !strings.HasPrefix(keyMarker, prefix) {
|
|
writeErrorResponse(w, r, ErrNotImplemented, r.URL.Path)
|
|
return
|
|
}
|
|
}
|
|
|
|
listMultipartsInfo, err := objectAPI.ListMultipartUploads(bucket, prefix, keyMarker, uploadIDMarker, delimiter, maxUploads)
|
|
if err != nil {
|
|
errorIf(err, "Unable to list multipart uploads.")
|
|
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
|
|
return
|
|
}
|
|
// generate response
|
|
response := generateListMultipartUploadsResponse(bucket, listMultipartsInfo)
|
|
encodedSuccessResponse := encodeResponse(response)
|
|
// write headers.
|
|
setCommonHeaders(w)
|
|
// write success response.
|
|
writeSuccessResponse(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) {
|
|
objectAPI := api.ObjectAPI()
|
|
if objectAPI == nil {
|
|
writeErrorResponse(w, r, ErrServerNotInitialized, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
// ListBuckets does not have any bucket action.
|
|
s3Error := checkRequestAuthType(r, "", "", "us-east-1")
|
|
if s3Error == ErrInvalidRegion {
|
|
// Clients like boto3 send listBuckets() call signed with region that is configured.
|
|
s3Error = checkRequestAuthType(r, "", "", serverConfig.GetRegion())
|
|
}
|
|
if s3Error != ErrNone {
|
|
writeErrorResponse(w, r, s3Error, r.URL.Path)
|
|
return
|
|
}
|
|
// Invoke the list buckets.
|
|
bucketsInfo, err := objectAPI.ListBuckets()
|
|
if err != nil {
|
|
errorIf(err, "Unable to list buckets.")
|
|
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
|
|
return
|
|
}
|
|
|
|
// Generate response.
|
|
response := generateListBucketsResponse(bucketsInfo)
|
|
encodedSuccessResponse := encodeResponse(response)
|
|
// Write headers.
|
|
setCommonHeaders(w)
|
|
// Write response.
|
|
writeSuccessResponse(w, encodedSuccessResponse)
|
|
}
|
|
|
|
// DeleteMultipleObjectsHandler - deletes multiple objects.
|
|
func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter, r *http.Request) {
|
|
vars := mux.Vars(r)
|
|
bucket := vars["bucket"]
|
|
|
|
objectAPI := api.ObjectAPI()
|
|
if objectAPI == nil {
|
|
writeErrorResponse(w, r, ErrServerNotInitialized, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
if s3Error := checkRequestAuthType(r, bucket, "s3:DeleteObject", serverConfig.GetRegion()); s3Error != ErrNone {
|
|
writeErrorResponse(w, r, s3Error, r.URL.Path)
|
|
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, r, ErrMissingContentLength, r.URL.Path)
|
|
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, r, ErrMissingContentMD5, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
// Allocate incoming content length bytes.
|
|
deleteXMLBytes := make([]byte, r.ContentLength)
|
|
|
|
// Read incoming body XML bytes.
|
|
if _, err := io.ReadFull(r.Body, deleteXMLBytes); err != nil {
|
|
errorIf(err, "Unable to read HTTP body.")
|
|
writeErrorResponse(w, r, ErrInternalError, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
// Unmarshal list of keys to be deleted.
|
|
deleteObjects := &DeleteObjectsRequest{}
|
|
if err := xml.Unmarshal(deleteXMLBytes, deleteObjects); err != nil {
|
|
errorIf(err, "Unable to unmarshal delete objects request XML.")
|
|
writeErrorResponse(w, r, ErrMalformedXML, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
var wg = &sync.WaitGroup{} // Allocate a new wait group.
|
|
var dErrs = make([]error, len(deleteObjects.Objects))
|
|
|
|
// Delete all requested objects in parallel.
|
|
for index, object := range deleteObjects.Objects {
|
|
wg.Add(1)
|
|
go func(i int, obj ObjectIdentifier) {
|
|
defer wg.Done()
|
|
dErr := objectAPI.DeleteObject(bucket, obj.ObjectName)
|
|
if dErr != nil {
|
|
dErrs[i] = dErr
|
|
}
|
|
}(index, object)
|
|
}
|
|
wg.Wait()
|
|
|
|
// 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 := errorCause(err).(ObjectNotFound); ok {
|
|
// If the object is not found it should be
|
|
// accounted as deleted as per S3 spec.
|
|
deletedObjects = append(deletedObjects, object)
|
|
continue
|
|
}
|
|
errorIf(err, "Unable to delete object. %s", object.ObjectName)
|
|
// Error during delete should be collected separately.
|
|
deleteErrors = append(deleteErrors, DeleteError{
|
|
Code: errorCodeResponse[toAPIErrorCode(err)].Code,
|
|
Message: errorCodeResponse[toAPIErrorCode(err)].Description,
|
|
Key: object.ObjectName,
|
|
})
|
|
}
|
|
|
|
// Generate response
|
|
response := generateMultiDeleteResponse(deleteObjects.Quiet, deletedObjects, deleteErrors)
|
|
encodedSuccessResponse := encodeResponse(response)
|
|
// Write headers
|
|
setCommonHeaders(w)
|
|
// Write success response.
|
|
writeSuccessResponse(w, encodedSuccessResponse)
|
|
|
|
// Notify deleted event for objects.
|
|
for _, dobj := range deletedObjects {
|
|
eventNotify(eventData{
|
|
Type: ObjectRemovedDelete,
|
|
Bucket: bucket,
|
|
ObjInfo: ObjectInfo{
|
|
Name: dobj.ObjectName,
|
|
},
|
|
ReqParams: map[string]string{
|
|
"sourceIPAddress": r.RemoteAddr,
|
|
},
|
|
})
|
|
}
|
|
}
|
|
|
|
// 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) {
|
|
objectAPI := api.ObjectAPI()
|
|
if objectAPI == nil {
|
|
writeErrorResponse(w, r, ErrServerNotInitialized, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
// PutBucket does not have any bucket action.
|
|
if s3Error := checkRequestAuthType(r, "", "", "us-east-1"); s3Error != ErrNone {
|
|
writeErrorResponse(w, r, s3Error, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
vars := mux.Vars(r)
|
|
bucket := vars["bucket"]
|
|
|
|
// Validate if incoming location constraint is valid, reject
|
|
// requests which do not follow valid region requirements.
|
|
if s3Error := isValidLocationConstraint(r); s3Error != ErrNone {
|
|
writeErrorResponse(w, r, s3Error, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
// Proceed to creating a bucket.
|
|
err := objectAPI.MakeBucket(bucket)
|
|
if err != nil {
|
|
errorIf(err, "Unable to create a bucket.")
|
|
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
|
|
return
|
|
}
|
|
// Make sure to add Location information here only for bucket
|
|
w.Header().Set("Location", getLocation(r))
|
|
writeSuccessResponse(w, nil)
|
|
}
|
|
|
|
// 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) {
|
|
objectAPI := api.ObjectAPI()
|
|
if objectAPI == nil {
|
|
writeErrorResponse(w, r, ErrServerNotInitialized, r.URL.Path)
|
|
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 {
|
|
errorIf(err, "Unable to initialize multipart reader.")
|
|
writeErrorResponse(w, r, ErrMalformedPOSTRequest, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
fileBody, fileName, formValues, err := extractPostPolicyFormValues(reader)
|
|
if err != nil {
|
|
errorIf(err, "Unable to parse form values.")
|
|
writeErrorResponse(w, r, ErrMalformedPOSTRequest, r.URL.Path)
|
|
return
|
|
}
|
|
bucket := mux.Vars(r)["bucket"]
|
|
formValues["Bucket"] = bucket
|
|
object := formValues["Key"]
|
|
|
|
if fileName != "" && strings.Contains(object, "${filename}") {
|
|
// S3 feature to replace ${filename} found in Key form field
|
|
// by the filename attribute passed in multipart
|
|
object = strings.Replace(object, "${filename}", fileName, -1)
|
|
}
|
|
|
|
// Verify policy signature.
|
|
apiErr := doesPolicySignatureMatch(formValues)
|
|
if apiErr != ErrNone {
|
|
writeErrorResponse(w, r, apiErr, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
policyBytes, err := base64.StdEncoding.DecodeString(formValues["Policy"])
|
|
if err != nil {
|
|
writeErrorResponse(w, r, ErrMalformedPOSTRequest, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
postPolicyForm, err := parsePostPolicyForm(string(policyBytes))
|
|
if err != nil {
|
|
writeErrorResponse(w, r, ErrMalformedPOSTRequest, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
// Make sure formValues adhere to policy restrictions.
|
|
if apiErr = checkPostPolicy(formValues, postPolicyForm); apiErr != ErrNone {
|
|
writeErrorResponse(w, r, apiErr, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
// Use rangeReader to ensure that object size is within expected range.
|
|
lengthRange := postPolicyForm.Conditions.ContentLengthRange
|
|
if lengthRange.Valid {
|
|
// If policy restricted the size of the object.
|
|
fileBody = &rangeReader{
|
|
Reader: fileBody,
|
|
Min: lengthRange.Min,
|
|
Max: lengthRange.Max,
|
|
}
|
|
} else {
|
|
// Default values of min/max size of the object.
|
|
fileBody = &rangeReader{
|
|
Reader: fileBody,
|
|
Min: 0,
|
|
Max: maxObjectSize,
|
|
}
|
|
}
|
|
|
|
// Save metadata.
|
|
metadata := make(map[string]string)
|
|
// Nothing to store right now.
|
|
|
|
sha256sum := ""
|
|
|
|
objInfo, err := objectAPI.PutObject(bucket, object, -1, fileBody, metadata, sha256sum)
|
|
if err != nil {
|
|
errorIf(err, "Unable to create object.")
|
|
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
|
|
return
|
|
}
|
|
w.Header().Set("ETag", "\""+objInfo.MD5Sum+"\"")
|
|
w.Header().Set("Location", getObjectLocation(bucket, object))
|
|
|
|
// Set common headers.
|
|
setCommonHeaders(w)
|
|
|
|
// Write successful response.
|
|
writeSuccessNoContent(w)
|
|
|
|
// Notify object created event.
|
|
eventNotify(eventData{
|
|
Type: ObjectCreatedPost,
|
|
Bucket: bucket,
|
|
ObjInfo: objInfo,
|
|
ReqParams: map[string]string{
|
|
"sourceIPAddress": r.RemoteAddr,
|
|
},
|
|
})
|
|
}
|
|
|
|
// 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) {
|
|
vars := mux.Vars(r)
|
|
bucket := vars["bucket"]
|
|
|
|
objectAPI := api.ObjectAPI()
|
|
if objectAPI == nil {
|
|
writeErrorResponse(w, r, ErrServerNotInitialized, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
if s3Error := checkRequestAuthType(r, bucket, "s3:ListBucket", serverConfig.GetRegion()); s3Error != ErrNone {
|
|
writeErrorResponse(w, r, s3Error, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
if _, err := objectAPI.GetBucketInfo(bucket); err != nil {
|
|
errorIf(err, "Unable to fetch bucket info.")
|
|
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
|
|
return
|
|
}
|
|
writeSuccessResponse(w, nil)
|
|
}
|
|
|
|
// DeleteBucketHandler - Delete bucket
|
|
func (api objectAPIHandlers) DeleteBucketHandler(w http.ResponseWriter, r *http.Request) {
|
|
objectAPI := api.ObjectAPI()
|
|
if objectAPI == nil {
|
|
writeErrorResponse(w, r, ErrServerNotInitialized, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
// DeleteBucket does not have any bucket action.
|
|
if s3Error := checkRequestAuthType(r, "", "", serverConfig.GetRegion()); s3Error != ErrNone {
|
|
writeErrorResponse(w, r, s3Error, r.URL.Path)
|
|
return
|
|
}
|
|
|
|
vars := mux.Vars(r)
|
|
bucket := vars["bucket"]
|
|
|
|
// Attempt to delete bucket.
|
|
if err := objectAPI.DeleteBucket(bucket); err != nil {
|
|
errorIf(err, "Unable to delete a bucket.")
|
|
writeErrorResponse(w, r, toAPIErrorCode(err), r.URL.Path)
|
|
return
|
|
}
|
|
|
|
// Delete bucket access policy, if present - ignore any errors.
|
|
_ = removeBucketPolicy(bucket, objectAPI)
|
|
|
|
// Delete notification config, if present - ignore any errors.
|
|
_ = removeNotificationConfig(bucket, objectAPI)
|
|
|
|
// Delete listener config, if present - ignore any errors.
|
|
_ = removeListenerConfig(bucket, objectAPI)
|
|
|
|
// Write success response.
|
|
writeSuccessNoContent(w)
|
|
}
|