minio/cmd/object-multipart-handlers.go

1222 lines
39 KiB
Go

// Copyright (c) 2015-2022 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"bufio"
"context"
"encoding/xml"
"io"
"net/http"
"net/url"
"sort"
"strconv"
"strings"
"time"
"github.com/google/uuid"
"github.com/minio/minio-go/v7/pkg/encrypt"
"github.com/minio/minio-go/v7/pkg/tags"
"github.com/minio/minio/internal/amztime"
sse "github.com/minio/minio/internal/bucket/encryption"
objectlock "github.com/minio/minio/internal/bucket/object/lock"
"github.com/minio/minio/internal/bucket/replication"
"github.com/minio/minio/internal/config/dns"
"github.com/minio/minio/internal/config/storageclass"
"github.com/minio/minio/internal/crypto"
"github.com/minio/minio/internal/etag"
"github.com/minio/minio/internal/event"
"github.com/minio/minio/internal/fips"
"github.com/minio/minio/internal/handlers"
"github.com/minio/minio/internal/hash"
xhttp "github.com/minio/minio/internal/http"
"github.com/minio/minio/internal/logger"
"github.com/minio/mux"
"github.com/minio/pkg/bucket/policy"
iampolicy "github.com/minio/pkg/iam/policy"
"github.com/minio/sio"
)
// Multipart objectAPIHandlers
// NewMultipartUploadHandler - New multipart upload.
// Notice: The S3 client can send secret keys in headers for encryption related jobs,
// the handler should ensure to remove these keys before sending them to the object layer.
// Currently these keys are:
// - X-Amz-Server-Side-Encryption-Customer-Key
// - X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key
func (api objectAPIHandlers) NewMultipartUploadHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "NewMultipartUpload")
defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
return
}
vars := mux.Vars(r)
bucket := vars["bucket"]
object, err := unescapePath(vars["object"])
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
if s3Error := checkRequestAuthType(ctx, r, policy.PutObjectAction, bucket, object); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
// Check if bucket encryption is enabled
sseConfig, _ := globalBucketSSEConfigSys.Get(bucket)
sseConfig.Apply(r.Header, sse.ApplyOptions{
AutoEncrypt: globalAutoEncryption,
})
// Validate storage class metadata if present
if sc := r.Header.Get(xhttp.AmzStorageClass); sc != "" {
if !storageclass.IsValid(sc) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidStorageClass), r.URL)
return
}
}
encMetadata := map[string]string{}
if crypto.Requested(r.Header) {
if crypto.SSEC.IsRequested(r.Header) && isReplicationEnabled(ctx, bucket) {
writeErrorResponse(ctx, w, toAPIError(ctx, errInvalidEncryptionParametersSSEC), r.URL)
return
}
if err = setEncryptionMetadata(r, bucket, object, encMetadata); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// Set this for multipart only operations, we need to differentiate during
// decryption if the file was actually multipart or not.
encMetadata[ReservedMetadataPrefix+"Encrypted-Multipart"] = ""
}
// Extract metadata that needs to be saved.
metadata, err := extractMetadata(ctx, r)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
if objTags := r.Header.Get(xhttp.AmzObjectTagging); objTags != "" {
if _, err := tags.ParseObjectTags(objTags); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
metadata[xhttp.AmzObjectTagging] = objTags
}
retPerms := isPutActionAllowed(ctx, getRequestAuthType(r), bucket, object, r, iampolicy.PutObjectRetentionAction)
holdPerms := isPutActionAllowed(ctx, getRequestAuthType(r), bucket, object, r, iampolicy.PutObjectLegalHoldAction)
getObjectInfo := objectAPI.GetObjectInfo
if api.CacheAPI() != nil {
getObjectInfo = api.CacheAPI().GetObjectInfo
}
retentionMode, retentionDate, legalHold, s3Err := checkPutObjectLockAllowed(ctx, r, bucket, object, getObjectInfo, retPerms, holdPerms)
if s3Err == ErrNone && retentionMode.Valid() {
metadata[strings.ToLower(xhttp.AmzObjectLockMode)] = string(retentionMode)
metadata[strings.ToLower(xhttp.AmzObjectLockRetainUntilDate)] = amztime.ISO8601Format(retentionDate.UTC())
}
if s3Err == ErrNone && legalHold.Status.Valid() {
metadata[strings.ToLower(xhttp.AmzObjectLockLegalHold)] = string(legalHold.Status)
}
if s3Err != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Err), r.URL)
return
}
if dsc := mustReplicate(ctx, bucket, object, getMustReplicateOptions(ObjectInfo{
UserDefined: metadata,
}, replication.ObjectReplicationType, ObjectOptions{})); dsc.ReplicateAny() {
metadata[ReservedMetadataPrefixLower+ReplicationTimestamp] = UTCNow().Format(time.RFC3339Nano)
metadata[ReservedMetadataPrefixLower+ReplicationStatus] = dsc.PendingStatus()
}
// We need to preserve the encryption headers set in EncryptRequest,
// so we do not want to override them, copy them instead.
for k, v := range encMetadata {
metadata[k] = v
}
// Ensure that metadata does not contain sensitive information
crypto.RemoveSensitiveEntries(metadata)
if isCompressible(r.Header, object) {
// Storing the compression metadata.
metadata[ReservedMetadataPrefix+"compression"] = compressionAlgorithmV2
}
opts, err := putOpts(ctx, r, bucket, object, metadata)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
if !opts.MTime.IsZero() && opts.PreserveETag != "" {
opts.CheckPrecondFn = func(oi ObjectInfo) bool {
if _, err := DecryptObjectInfo(&oi, r); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return true
}
return checkPreconditionsPUT(ctx, w, r, oi, opts)
}
}
checksumType := hash.NewChecksumType(r.Header.Get(xhttp.AmzChecksumAlgo))
if checksumType.Is(hash.ChecksumInvalid) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidRequestParameter), r.URL)
return
} else if checksumType.IsSet() && !checksumType.Is(hash.ChecksumTrailing) {
opts.WantChecksum = &hash.Checksum{Type: checksumType}
}
newMultipartUpload := objectAPI.NewMultipartUpload
if api.CacheAPI() != nil {
newMultipartUpload = api.CacheAPI().NewMultipartUpload
}
res, err := newMultipartUpload(ctx, bucket, object, opts)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
response := generateInitiateMultipartUploadResponse(bucket, object, res.UploadID)
if res.ChecksumAlgo != "" {
w.Header().Set(xhttp.AmzChecksumAlgo, res.ChecksumAlgo)
}
encodedSuccessResponse := encodeResponse(response)
// Write success response.
writeSuccessResponseXML(w, encodedSuccessResponse)
}
// CopyObjectPartHandler - uploads a part by copying data from an existing object as data source.
func (api objectAPIHandlers) CopyObjectPartHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "CopyObjectPart")
defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
return
}
if crypto.S3KMS.IsRequested(r.Header) { // SSE-KMS is not supported
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
return
}
vars := mux.Vars(r)
dstBucket := vars["bucket"]
dstObject, err := unescapePath(vars["object"])
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
if s3Error := checkRequestAuthType(ctx, r, policy.PutObjectAction, dstBucket, dstObject); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
// Read escaped copy source path to check for parameters.
cpSrcPath := r.Header.Get(xhttp.AmzCopySource)
var vid string
if u, err := url.Parse(cpSrcPath); err == nil {
vid = strings.TrimSpace(u.Query().Get(xhttp.VersionID))
// Note that url.Parse does the unescaping
cpSrcPath = u.Path
}
srcBucket, srcObject := path2BucketObject(cpSrcPath)
// If source object is empty or bucket is empty, reply back invalid copy source.
if srcObject == "" || srcBucket == "" {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidCopySource), r.URL)
return
}
if vid != "" && vid != nullVersionID {
_, err := uuid.Parse(vid)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, VersionNotFound{
Bucket: srcBucket,
Object: srcObject,
VersionID: vid,
}), r.URL)
return
}
}
if s3Error := checkRequestAuthType(ctx, r, policy.GetObjectAction, srcBucket, srcObject); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
uploadID := r.Form.Get(xhttp.UploadID)
partIDString := r.Form.Get(xhttp.PartNumber)
partID, err := strconv.Atoi(partIDString)
if err != nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidPart), r.URL)
return
}
// check partID with maximum part ID for multipart objects
if isMaxPartID(partID) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidMaxParts), r.URL)
return
}
var srcOpts, dstOpts ObjectOptions
srcOpts, err = copySrcOpts(ctx, r, srcBucket, srcObject)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
srcOpts.VersionID = vid
// convert copy src and dst encryption options for GET/PUT calls
getOpts := ObjectOptions{VersionID: srcOpts.VersionID}
if srcOpts.ServerSideEncryption != nil {
getOpts.ServerSideEncryption = encrypt.SSE(srcOpts.ServerSideEncryption)
}
dstOpts, err = copyDstOpts(ctx, r, dstBucket, dstObject, nil)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
getObjectNInfo := objectAPI.GetObjectNInfo
if api.CacheAPI() != nil {
getObjectNInfo = api.CacheAPI().GetObjectNInfo
}
// Get request range.
var rs *HTTPRangeSpec
var parseRangeErr error
if rangeHeader := r.Header.Get(xhttp.AmzCopySourceRange); rangeHeader != "" {
rs, parseRangeErr = parseCopyPartRangeSpec(rangeHeader)
} else {
// This check is to see if client specified a header but the value
// is empty for 'x-amz-copy-source-range'
_, ok := r.Header[xhttp.AmzCopySourceRange]
if ok {
parseRangeErr = errInvalidRange
}
}
checkCopyPartPrecondFn := func(o ObjectInfo) bool {
if _, err := DecryptObjectInfo(&o, r); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return true
}
if checkCopyObjectPartPreconditions(ctx, w, r, o) {
return true
}
if parseRangeErr != nil {
logger.LogIf(ctx, parseRangeErr)
writeCopyPartErr(ctx, w, parseRangeErr, r.URL)
// Range header mismatch is pre-condition like failure
// so return true to indicate Range precondition failed.
return true
}
return false
}
getOpts.CheckPrecondFn = checkCopyPartPrecondFn
gr, err := getObjectNInfo(ctx, srcBucket, srcObject, rs, r.Header, readLock, getOpts)
if err != nil {
if isErrPreconditionFailed(err) {
return
}
if globalBucketVersioningSys.PrefixEnabled(srcBucket, srcObject) && gr != nil {
// Versioning enabled quite possibly object is deleted might be delete-marker
// if present set the headers, no idea why AWS S3 sets these headers.
if gr.ObjInfo.VersionID != "" && gr.ObjInfo.DeleteMarker {
w.Header()[xhttp.AmzVersionID] = []string{gr.ObjInfo.VersionID}
w.Header()[xhttp.AmzDeleteMarker] = []string{strconv.FormatBool(gr.ObjInfo.DeleteMarker)}
}
}
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
defer gr.Close()
srcInfo := gr.ObjInfo
actualPartSize, err := srcInfo.GetActualSize()
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
if err := enforceBucketQuotaHard(ctx, dstBucket, actualPartSize); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// Special care for CopyObjectPart
if partRangeErr := checkCopyPartRangeWithSize(rs, actualPartSize); partRangeErr != nil {
writeCopyPartErr(ctx, w, partRangeErr, r.URL)
return
}
// Get the object offset & length
startOffset, length, err := rs.GetOffsetLength(actualPartSize)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// maximum copy size for multipart objects in a single operation
if isMaxObjectSize(length) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrEntityTooLarge), r.URL)
return
}
if isRemoteCopyRequired(ctx, srcBucket, dstBucket, objectAPI) {
var dstRecords []dns.SrvRecord
dstRecords, err = globalDNSConfig.Get(dstBucket)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// Send PutObject request to appropriate instance (in federated deployment)
core, rerr := getRemoteInstanceClient(r, getHostFromSrv(dstRecords))
if rerr != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, rerr), r.URL)
return
}
partInfo, err := core.PutObjectPart(ctx, dstBucket, dstObject, uploadID, partID, gr, length, "", "", dstOpts.ServerSideEncryption)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
response := generateCopyObjectPartResponse(partInfo.ETag, partInfo.LastModified)
encodedSuccessResponse := encodeResponse(response)
// Write success response.
writeSuccessResponseXML(w, encodedSuccessResponse)
return
}
actualPartSize = length
var reader io.Reader = etag.NewReader(gr, nil)
mi, err := objectAPI.GetMultipartInfo(ctx, dstBucket, dstObject, uploadID, dstOpts)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// Read compression metadata preserved in the init multipart for the decision.
_, isCompressed := mi.UserDefined[ReservedMetadataPrefix+"compression"]
// Compress only if the compression is enabled during initial multipart.
var idxCb func() []byte
if isCompressed {
wantEncryption := crypto.Requested(r.Header)
s2c, cb := newS2CompressReader(reader, actualPartSize, wantEncryption)
idxCb = cb
defer s2c.Close()
reader = etag.Wrap(s2c, reader)
length = -1
}
srcInfo.Reader, err = hash.NewReader(reader, length, "", "", actualPartSize)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
dstOpts, err = copyDstOpts(ctx, r, dstBucket, dstObject, mi.UserDefined)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
dstOpts.IndexCB = idxCb
rawReader := srcInfo.Reader
pReader := NewPutObjReader(rawReader)
_, isEncrypted := crypto.IsEncrypted(mi.UserDefined)
var objectEncryptionKey crypto.ObjectKey
if isEncrypted {
if !crypto.SSEC.IsRequested(r.Header) && crypto.SSEC.IsEncrypted(mi.UserDefined) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrSSEMultipartEncrypted), r.URL)
return
}
if crypto.S3.IsEncrypted(mi.UserDefined) && crypto.SSEC.IsRequested(r.Header) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrSSEMultipartEncrypted), r.URL)
return
}
var key []byte
if crypto.SSEC.IsRequested(r.Header) {
key, err = ParseSSECustomerRequest(r)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
}
key, err = decryptObjectMeta(key, dstBucket, dstObject, mi.UserDefined)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
copy(objectEncryptionKey[:], key)
partEncryptionKey := objectEncryptionKey.DerivePartKey(uint32(partID))
encReader, err := sio.EncryptReader(reader, sio.Config{Key: partEncryptionKey[:], CipherSuites: fips.DARECiphers()})
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
reader = etag.Wrap(encReader, reader)
wantSize := int64(-1)
if length >= 0 {
info := ObjectInfo{Size: length}
wantSize = info.EncryptedSize()
}
srcInfo.Reader, err = hash.NewReader(reader, wantSize, "", "", actualPartSize)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
pReader, err = pReader.WithEncryption(srcInfo.Reader, &objectEncryptionKey)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
if dstOpts.IndexCB != nil {
dstOpts.IndexCB = compressionIndexEncrypter(objectEncryptionKey, dstOpts.IndexCB)
}
}
srcInfo.PutObjReader = pReader
copyObjectPart := objectAPI.CopyObjectPart
if api.CacheAPI() != nil {
copyObjectPart = api.CacheAPI().CopyObjectPart
}
// Copy source object to destination, if source and destination
// object is same then only metadata is updated.
partInfo, err := copyObjectPart(ctx, srcBucket, srcObject, dstBucket, dstObject, uploadID, partID,
startOffset, length, srcInfo, srcOpts, dstOpts)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
if isEncrypted {
partInfo.ETag = tryDecryptETag(objectEncryptionKey[:], partInfo.ETag, crypto.SSEC.IsRequested(r.Header))
}
response := generateCopyObjectPartResponse(partInfo.ETag, partInfo.LastModified)
encodedSuccessResponse := encodeResponse(response)
// Write success response.
writeSuccessResponseXML(w, encodedSuccessResponse)
}
// PutObjectPartHandler - uploads an incoming part for an ongoing multipart operation.
func (api objectAPIHandlers) PutObjectPartHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "PutObjectPart")
defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
return
}
vars := mux.Vars(r)
bucket := vars["bucket"]
object, err := unescapePath(vars["object"])
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// X-Amz-Copy-Source shouldn't be set for this call.
if _, ok := r.Header[xhttp.AmzCopySource]; ok {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidCopySource), r.URL)
return
}
clientETag, err := etag.FromContentMD5(r.Header)
if err != nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidDigest), r.URL)
return
}
// if Content-Length is unknown/missing, throw away
size := r.ContentLength
rAuthType := getRequestAuthType(r)
// For auth type streaming signature, we need to gather a different content length.
if rAuthType == authTypeStreamingSigned {
if sizeStr, ok := r.Header[xhttp.AmzDecodedContentLength]; ok {
if sizeStr[0] == "" {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentLength), r.URL)
return
}
size, err = strconv.ParseInt(sizeStr[0], 10, 64)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
}
}
if size == -1 {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentLength), r.URL)
return
}
uploadID := r.Form.Get(xhttp.UploadID)
partIDString := r.Form.Get(xhttp.PartNumber)
partID, err := strconv.Atoi(partIDString)
if err != nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidPart), r.URL)
return
}
// maximum size for multipart objects in a single operation
if isMaxObjectSize(size) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrEntityTooLarge), r.URL)
return
}
// check partID with maximum part ID for multipart objects
if isMaxPartID(partID) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidMaxParts), r.URL)
return
}
var (
md5hex = clientETag.String()
sha256hex = ""
reader io.Reader = r.Body
s3Error APIErrorCode
)
if s3Error = isPutActionAllowed(ctx, rAuthType, bucket, object, r, iampolicy.PutObjectAction); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
switch rAuthType {
case authTypeStreamingSigned:
// Initialize stream signature verifier.
reader, s3Error = newSignV4ChunkedReader(r)
if s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
case authTypeSignedV2, authTypePresignedV2:
if s3Error = isReqAuthenticatedV2(r); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
case authTypePresigned, authTypeSigned:
if s3Error = reqSignatureV4Verify(r, globalSite.Region, serviceS3); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
if !skipContentSha256Cksum(r) {
sha256hex = getContentSha256Cksum(r, serviceS3)
}
}
if err := enforceBucketQuotaHard(ctx, bucket, size); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
actualSize := size
// get encryption options
var opts ObjectOptions
if crypto.SSEC.IsRequested(r.Header) {
opts, err = getOpts(ctx, r, bucket, object)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
}
mi, err := objectAPI.GetMultipartInfo(ctx, bucket, object, uploadID, opts)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// Read compression metadata preserved in the init multipart for the decision.
_, isCompressed := mi.UserDefined[ReservedMetadataPrefix+"compression"]
var idxCb func() []byte
if isCompressed {
actualReader, err := hash.NewReader(reader, size, md5hex, sha256hex, actualSize)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
if err = actualReader.AddChecksum(r, false); err != nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidChecksum), r.URL)
return
}
// Set compression metrics.
wantEncryption := crypto.Requested(r.Header)
s2c, cb := newS2CompressReader(actualReader, actualSize, wantEncryption)
idxCb = cb
defer s2c.Close()
reader = etag.Wrap(s2c, actualReader)
size = -1 // Since compressed size is un-predictable.
md5hex = "" // Do not try to verify the content.
sha256hex = ""
}
hashReader, err := hash.NewReader(reader, size, md5hex, sha256hex, actualSize)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
if err := hashReader.AddChecksum(r, size < 0); err != nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidChecksum), r.URL)
return
}
pReader := NewPutObjReader(hashReader)
_, isEncrypted := crypto.IsEncrypted(mi.UserDefined)
var objectEncryptionKey crypto.ObjectKey
if isEncrypted {
if !crypto.SSEC.IsRequested(r.Header) && crypto.SSEC.IsEncrypted(mi.UserDefined) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrSSEMultipartEncrypted), r.URL)
return
}
opts, err = putOpts(ctx, r, bucket, object, mi.UserDefined)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
var key []byte
if crypto.SSEC.IsRequested(r.Header) {
key, err = ParseSSECustomerRequest(r)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
}
// Calculating object encryption key
key, err = decryptObjectMeta(key, bucket, object, mi.UserDefined)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
copy(objectEncryptionKey[:], key)
partEncryptionKey := objectEncryptionKey.DerivePartKey(uint32(partID))
in := io.Reader(hashReader)
if size > encryptBufferThreshold {
// The encryption reads in blocks of 64KB.
// We add a buffer on bigger files to reduce the number of syscalls upstream.
in = bufio.NewReaderSize(hashReader, encryptBufferSize)
}
reader, err = sio.EncryptReader(in, sio.Config{Key: partEncryptionKey[:], CipherSuites: fips.DARECiphers()})
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
wantSize := int64(-1)
if size >= 0 {
info := ObjectInfo{Size: size}
wantSize = info.EncryptedSize()
}
// do not try to verify encrypted content
hashReader, err = hash.NewReader(etag.Wrap(reader, hashReader), wantSize, "", "", actualSize)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
if err := hashReader.AddChecksum(r, true); err != nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidChecksum), r.URL)
return
}
pReader, err = pReader.WithEncryption(hashReader, &objectEncryptionKey)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
if idxCb != nil {
idxCb = compressionIndexEncrypter(objectEncryptionKey, idxCb)
}
opts.EncryptFn = metadataEncrypter(objectEncryptionKey)
}
opts.IndexCB = idxCb
putObjectPart := objectAPI.PutObjectPart
if api.CacheAPI() != nil {
putObjectPart = api.CacheAPI().PutObjectPart
}
partInfo, err := putObjectPart(ctx, bucket, object, uploadID, partID, pReader, opts)
if err != nil {
// Verify if the underlying error is signature mismatch.
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
etag := partInfo.ETag
if kind, encrypted := crypto.IsEncrypted(mi.UserDefined); encrypted {
switch kind {
case crypto.S3KMS:
w.Header().Set(xhttp.AmzServerSideEncryption, xhttp.AmzEncryptionKMS)
w.Header().Set(xhttp.AmzServerSideEncryptionKmsID, mi.KMSKeyID())
if kmsCtx, ok := mi.UserDefined[crypto.MetaContext]; ok {
w.Header().Set(xhttp.AmzServerSideEncryptionKmsContext, kmsCtx)
}
if len(etag) >= 32 && strings.Count(etag, "-") != 1 {
etag = etag[len(etag)-32:]
}
case crypto.S3:
w.Header().Set(xhttp.AmzServerSideEncryption, xhttp.AmzEncryptionAES)
etag, _ = DecryptETag(objectEncryptionKey, ObjectInfo{ETag: etag})
case crypto.SSEC:
w.Header().Set(xhttp.AmzServerSideEncryptionCustomerAlgorithm, r.Header.Get(xhttp.AmzServerSideEncryptionCustomerAlgorithm))
w.Header().Set(xhttp.AmzServerSideEncryptionCustomerKeyMD5, r.Header.Get(xhttp.AmzServerSideEncryptionCustomerKeyMD5))
if len(etag) >= 32 && strings.Count(etag, "-") != 1 {
etag = etag[len(etag)-32:]
}
}
}
// We must not use the http.Header().Set method here because some (broken)
// clients expect the ETag header key to be literally "ETag" - not "Etag" (case-sensitive).
// Therefore, we have to set the ETag directly as map entry.
w.Header()[xhttp.ETag] = []string{"\"" + etag + "\""}
hash.TransferChecksumHeader(w, r)
writeSuccessResponseHeadersOnly(w)
}
// CompleteMultipartUploadHandler - Complete multipart upload.
func (api objectAPIHandlers) CompleteMultipartUploadHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "CompleteMultipartUpload")
defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
vars := mux.Vars(r)
bucket := vars["bucket"]
object, err := unescapePath(vars["object"])
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
return
}
if s3Error := checkRequestAuthType(ctx, r, policy.PutObjectAction, bucket, object); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
// Content-Length is required and should be non-zero
if r.ContentLength <= 0 {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentLength), r.URL)
return
}
// Get upload id.
uploadID, _, _, _, s3Error := getObjectResources(r.Form)
if s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
complMultipartUpload := &CompleteMultipartUpload{}
if err = xmlDecoder(r.Body, complMultipartUpload, r.ContentLength); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
if len(complMultipartUpload.Parts) == 0 {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMalformedXML), r.URL)
return
}
if !sort.IsSorted(CompletedParts(complMultipartUpload.Parts)) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidPartOrder), r.URL)
return
}
// Reject retention or governance headers if set, CompleteMultipartUpload spec
// does not use these headers, and should not be passed down to checkPutObjectLockAllowed
if objectlock.IsObjectLockRequested(r.Header) || objectlock.IsObjectLockGovernanceBypassSet(r.Header) {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidRequest), r.URL)
return
}
if _, _, _, s3Err := checkPutObjectLockAllowed(ctx, r, bucket, object, objectAPI.GetObjectInfo, ErrNone, ErrNone); s3Err != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Err), r.URL)
return
}
completeMultiPartUpload := objectAPI.CompleteMultipartUpload
if api.CacheAPI() != nil {
completeMultiPartUpload = api.CacheAPI().CompleteMultipartUpload
}
// This code is specifically to handle the requirements for slow
// complete multipart upload operations on FS mode.
writeErrorResponseWithoutXMLHeader := func(ctx context.Context, w http.ResponseWriter, err APIError, reqURL *url.URL) {
switch err.Code {
case "SlowDown", "XMinioServerNotInitialized", "XMinioReadQuorum", "XMinioWriteQuorum":
// Set retxry-after header to indicate user-agents to retry request after 120secs.
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Retry-After
w.Header().Set(xhttp.RetryAfter, "120")
}
// Generate error response.
errorResponse := getAPIErrorResponse(ctx, err, reqURL.Path,
w.Header().Get(xhttp.AmzRequestID), globalDeploymentID)
encodedErrorResponse, _ := xml.Marshal(errorResponse)
setCommonHeaders(w)
w.Header().Set(xhttp.ContentType, string(mimeXML))
w.Write(encodedErrorResponse)
}
versioned := globalBucketVersioningSys.PrefixEnabled(bucket, object)
suspended := globalBucketVersioningSys.PrefixSuspended(bucket, object)
os := newObjSweeper(bucket, object).WithVersioning(versioned, suspended)
if !globalTierConfigMgr.Empty() {
// Get appropriate object info to identify the remote object to delete
goiOpts := os.GetOpts()
if goi, gerr := objectAPI.GetObjectInfo(ctx, bucket, object, goiOpts); gerr == nil {
os.SetTransitionState(goi.TransitionedObject)
}
}
setEventStreamHeaders(w)
opts, err := completeMultipartOpts(ctx, r, bucket, object)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// First, we compute the ETag of the multipart object.
// The ETag of a multi-part object is always:
// ETag := MD5(ETag_p1, ETag_p2, ...)+"-N" (N being the number of parts)
//
// This is independent of encryption. An encrypted multipart
// object also has an ETag that is the MD5 of its part ETags.
// The fact the in case of encryption the ETag of a part is
// not the MD5 of the part content does not change that.
var completeETags []etag.ETag
for _, part := range complMultipartUpload.Parts {
ETag, err := etag.Parse(part.ETag)
if err != nil {
continue
}
completeETags = append(completeETags, ETag)
}
multipartETag := etag.Multipart(completeETags...)
opts.UserDefined["etag"] = multipartETag.String()
w = &whiteSpaceWriter{ResponseWriter: w, Flusher: w.(http.Flusher)}
completeDoneCh := sendWhiteSpace(ctx, w)
objInfo, err := completeMultiPartUpload(ctx, bucket, object, uploadID, complMultipartUpload.Parts, opts)
// Stop writing white spaces to the client. Note that close(doneCh) style is not used as it
// can cause white space to be written after we send XML response in a race condition.
headerWritten := <-completeDoneCh
if err != nil {
if headerWritten {
writeErrorResponseWithoutXMLHeader(ctx, w, toAPIError(ctx, err), r.URL)
} else {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
}
return
}
// Get object location.
location := getObjectLocation(r, globalDomainNames, bucket, object)
// Generate complete multipart response.
response := generateCompleteMultpartUploadResponse(bucket, object, location, objInfo)
var encodedSuccessResponse []byte
if !headerWritten {
encodedSuccessResponse = encodeResponse(response)
} else {
encodedSuccessResponse, err = xml.Marshal(response)
if err != nil {
writeErrorResponseWithoutXMLHeader(ctx, w, toAPIError(ctx, err), r.URL)
return
}
}
opts.EncryptFn, err = objInfo.metadataEncryptFn(r.Header)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
if r.Header.Get(xMinIOExtract) == "true" && HasSuffix(object, archiveExt) {
opts := ObjectOptions{VersionID: objInfo.VersionID, MTime: objInfo.ModTime}
if _, err := updateObjectMetadataWithZipInfo(ctx, objectAPI, bucket, object, opts); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
}
setPutObjHeaders(w, objInfo, false)
if dsc := mustReplicate(ctx, bucket, object, getMustReplicateOptions(objInfo, replication.ObjectReplicationType, opts)); dsc.ReplicateAny() {
scheduleReplication(ctx, objInfo.Clone(), objectAPI, dsc, replication.ObjectReplicationType)
}
if _, ok := r.Header[xhttp.MinIOSourceReplicationRequest]; ok {
actualSize, _ := objInfo.GetActualSize()
defer globalReplicationStats.UpdateReplicaStat(bucket, actualSize)
}
// Write success response.
writeSuccessResponseXML(w, encodedSuccessResponse)
// Notify object created event.
evt := eventArgs{
EventName: event.ObjectCreatedCompleteMultipartUpload,
BucketName: bucket,
Object: objInfo,
ReqParams: extractReqParams(r),
RespElements: extractRespElements(w),
UserAgent: r.UserAgent(),
Host: handlers.GetSourceIP(r),
}
sendEvent(evt)
if objInfo.NumVersions > dataScannerExcessiveVersionsThreshold {
evt.EventName = event.ObjectManyVersions
sendEvent(evt)
}
// Remove the transitioned object whose object version is being overwritten.
if !globalTierConfigMgr.Empty() {
// Schedule object for immediate transition if eligible.
enqueueTransitionImmediate(objInfo)
logger.LogIf(ctx, os.Sweep())
}
}
// AbortMultipartUploadHandler - Abort multipart upload
func (api objectAPIHandlers) AbortMultipartUploadHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "AbortMultipartUpload")
defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
vars := mux.Vars(r)
bucket := vars["bucket"]
object, err := unescapePath(vars["object"])
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
return
}
abortMultipartUpload := objectAPI.AbortMultipartUpload
if api.CacheAPI() != nil {
abortMultipartUpload = api.CacheAPI().AbortMultipartUpload
}
if s3Error := checkRequestAuthType(ctx, r, policy.AbortMultipartUploadAction, bucket, object); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
uploadID, _, _, _, s3Error := getObjectResources(r.Form)
if s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
opts := ObjectOptions{}
if err := abortMultipartUpload(ctx, bucket, object, uploadID, opts); err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
writeSuccessNoContent(w)
}
// ListObjectPartsHandler - List object parts
func (api objectAPIHandlers) ListObjectPartsHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "ListObjectParts")
defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
vars := mux.Vars(r)
bucket := vars["bucket"]
object, err := unescapePath(vars["object"])
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
objectAPI := api.ObjectAPI()
if objectAPI == nil {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
return
}
if s3Error := checkRequestAuthType(ctx, r, policy.ListMultipartUploadPartsAction, bucket, object); s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
uploadID, partNumberMarker, maxParts, encodingType, s3Error := getObjectResources(r.Form)
if s3Error != ErrNone {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
return
}
if partNumberMarker < 0 {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidPartNumberMarker), r.URL)
return
}
if maxParts < 0 {
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidMaxParts), r.URL)
return
}
opts := ObjectOptions{}
listPartsInfo, err := objectAPI.ListObjectParts(ctx, bucket, object, uploadID, partNumberMarker, maxParts, opts)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
// We have to adjust the size of encrypted parts since encrypted parts
// are slightly larger due to encryption overhead.
// Further, we have to adjust the ETags of parts when using SSE-S3.
// Due to AWS S3, SSE-S3 encrypted parts return the plaintext ETag
// being the content MD5 of that particular part. This is not the
// case for SSE-C and SSE-KMS objects.
if kind, ok := crypto.IsEncrypted(listPartsInfo.UserDefined); ok {
var objectEncryptionKey []byte
if kind == crypto.S3 {
objectEncryptionKey, err = decryptObjectMeta(nil, bucket, object, listPartsInfo.UserDefined)
if err != nil {
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
return
}
}
for i, p := range listPartsInfo.Parts {
listPartsInfo.Parts[i].ETag = tryDecryptETag(objectEncryptionKey, p.ETag, kind != crypto.S3)
listPartsInfo.Parts[i].Size = p.ActualSize
}
}
response := generateListPartsResponse(listPartsInfo, encodingType)
encodedSuccessResponse := encodeResponse(response)
// Write success response.
writeSuccessResponseXML(w, encodedSuccessResponse)
}
type whiteSpaceWriter struct {
http.ResponseWriter
http.Flusher
written bool
}
func (w *whiteSpaceWriter) Write(b []byte) (n int, err error) {
n, err = w.ResponseWriter.Write(b)
w.written = true
return
}
func (w *whiteSpaceWriter) WriteHeader(statusCode int) {
if !w.written {
w.ResponseWriter.WriteHeader(statusCode)
}
}
// Send empty whitespaces every 10 seconds to the client till completeMultiPartUpload() is
// done so that the client does not time out. Downside is we might send 200 OK and
// then send error XML. But accoording to S3 spec the client is supposed to check
// for error XML even if it received 200 OK. But for erasure this is not a problem
// as completeMultiPartUpload() is quick. Even For FS, it would not be an issue as
// we do background append as and when the parts arrive and completeMultiPartUpload
// is quick. Only in a rare case where parts would be out of order will
// FS:completeMultiPartUpload() take a longer time.
func sendWhiteSpace(ctx context.Context, w http.ResponseWriter) <-chan bool {
doneCh := make(chan bool)
go func() {
defer close(doneCh)
ticker := time.NewTicker(time.Second * 10)
defer ticker.Stop()
headerWritten := false
for {
select {
case <-ticker.C:
// Write header if not written yet.
if !headerWritten {
_, err := w.Write([]byte(xml.Header))
headerWritten = err == nil
}
// Once header is written keep writing empty spaces
// which are ignored by client SDK XML parsers.
// This occurs when server takes long time to completeMultiPartUpload()
_, err := w.Write([]byte(" "))
if err != nil {
return
}
w.(http.Flusher).Flush()
case doneCh <- headerWritten:
return
case <-ctx.Done():
return
}
}
}()
return doneCh
}