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312 lines
9.0 KiB
312 lines
9.0 KiB
package s3api
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import (
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"fmt"
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"net/http"
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"net/url"
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"strconv"
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"strings"
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"time"
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"modernc.org/strutil"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/s3api/s3_constants"
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"github.com/seaweedfs/seaweedfs/weed/s3api/s3err"
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"github.com/seaweedfs/seaweedfs/weed/util"
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util_http "github.com/seaweedfs/seaweedfs/weed/util/http"
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)
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const (
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DirectiveCopy = "COPY"
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DirectiveReplace = "REPLACE"
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)
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func (s3a *S3ApiServer) CopyObjectHandler(w http.ResponseWriter, r *http.Request) {
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dstBucket, dstObject := s3_constants.GetBucketAndObject(r)
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// Copy source path.
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cpSrcPath, err := url.QueryUnescape(r.Header.Get("X-Amz-Copy-Source"))
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if err != nil {
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// Save unescaped string as is.
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cpSrcPath = r.Header.Get("X-Amz-Copy-Source")
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}
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srcBucket, srcObject := pathToBucketAndObject(cpSrcPath)
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glog.V(3).Infof("CopyObjectHandler %s %s => %s %s", srcBucket, srcObject, dstBucket, dstObject)
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replaceMeta, replaceTagging := replaceDirective(r.Header)
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if (srcBucket == dstBucket && srcObject == dstObject || cpSrcPath == "") && (replaceMeta || replaceTagging) {
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fullPath := util.FullPath(fmt.Sprintf("%s/%s%s", s3a.option.BucketsPath, dstBucket, dstObject))
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dir, name := fullPath.DirAndName()
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entry, err := s3a.getEntry(dir, name)
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if err != nil || entry.IsDirectory {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
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return
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}
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entry.Extended, err = processMetadataBytes(r.Header, entry.Extended, replaceMeta, replaceTagging)
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entry.Attributes.Mtime = time.Now().Unix()
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if err != nil {
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glog.Errorf("CopyObjectHandler ValidateTags error %s: %v", r.URL, err)
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidTag)
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return
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}
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err = s3a.touch(dir, name, entry)
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if err != nil {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
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return
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}
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writeSuccessResponseXML(w, r, CopyObjectResult{
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ETag: fmt.Sprintf("%x", entry.Attributes.Md5),
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LastModified: time.Now().UTC(),
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})
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return
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}
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// If source object is empty or bucket is empty, reply back invalid copy source.
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if srcObject == "" || srcBucket == "" {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
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return
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}
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srcPath := util.FullPath(fmt.Sprintf("%s/%s%s", s3a.option.BucketsPath, srcBucket, srcObject))
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dir, name := srcPath.DirAndName()
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if entry, err := s3a.getEntry(dir, name); err != nil || entry.IsDirectory {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
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return
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}
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if srcBucket == dstBucket && srcObject == dstObject {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopyDest)
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return
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}
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dstUrl := fmt.Sprintf("http://%s%s/%s%s",
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s3a.option.Filer.ToHttpAddress(), s3a.option.BucketsPath, dstBucket, urlEscapeObject(dstObject))
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srcUrl := fmt.Sprintf("http://%s%s/%s%s",
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s3a.option.Filer.ToHttpAddress(), s3a.option.BucketsPath, srcBucket, urlEscapeObject(srcObject))
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_, _, resp, err := util_http.DownloadFile(srcUrl, s3a.maybeGetFilerJwtAuthorizationToken(false))
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if err != nil {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
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return
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}
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defer util_http.CloseResponse(resp)
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tagErr := processMetadata(r.Header, resp.Header, replaceMeta, replaceTagging, s3a.getTags, dir, name)
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if tagErr != nil {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
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return
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}
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glog.V(2).Infof("copy from %s to %s", srcUrl, dstUrl)
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destination := fmt.Sprintf("%s/%s%s", s3a.option.BucketsPath, dstBucket, dstObject)
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etag, errCode := s3a.putToFiler(r, dstUrl, resp.Body, destination, dstBucket)
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if errCode != s3err.ErrNone {
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s3err.WriteErrorResponse(w, r, errCode)
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return
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}
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setEtag(w, etag)
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response := CopyObjectResult{
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ETag: etag,
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LastModified: time.Now().UTC(),
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}
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writeSuccessResponseXML(w, r, response)
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}
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func pathToBucketAndObject(path string) (bucket, object string) {
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path = strings.TrimPrefix(path, "/")
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parts := strings.SplitN(path, "/", 2)
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if len(parts) == 2 {
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return parts[0], "/" + parts[1]
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}
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return parts[0], "/"
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}
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type CopyPartResult struct {
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LastModified time.Time `xml:"LastModified"`
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ETag string `xml:"ETag"`
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}
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func (s3a *S3ApiServer) CopyObjectPartHandler(w http.ResponseWriter, r *http.Request) {
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// https://docs.aws.amazon.com/AmazonS3/latest/dev/CopyingObjctsUsingRESTMPUapi.html
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// https://docs.aws.amazon.com/AmazonS3/latest/API/API_UploadPartCopy.html
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dstBucket, dstObject := s3_constants.GetBucketAndObject(r)
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// Copy source path.
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cpSrcPath, err := url.QueryUnescape(r.Header.Get("X-Amz-Copy-Source"))
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if err != nil {
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// Save unescaped string as is.
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cpSrcPath = r.Header.Get("X-Amz-Copy-Source")
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}
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srcBucket, srcObject := pathToBucketAndObject(cpSrcPath)
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// If source object is empty or bucket is empty, reply back invalid copy source.
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if srcObject == "" || srcBucket == "" {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
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return
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}
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uploadID := r.URL.Query().Get("uploadId")
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partIDString := r.URL.Query().Get("partNumber")
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partID, err := strconv.Atoi(partIDString)
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if err != nil {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidPart)
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return
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}
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glog.V(3).Infof("CopyObjectPartHandler %s %s => %s part %d", srcBucket, srcObject, dstBucket, partID)
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// check partID with maximum part ID for multipart objects
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if partID > globalMaxPartID {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidMaxParts)
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return
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}
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rangeHeader := r.Header.Get("x-amz-copy-source-range")
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dstUrl := s3a.genPartUploadUrl(dstBucket, uploadID, partID)
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srcUrl := fmt.Sprintf("http://%s%s/%s%s",
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s3a.option.Filer.ToHttpAddress(), s3a.option.BucketsPath, srcBucket, urlEscapeObject(srcObject))
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resp, dataReader, err := util_http.ReadUrlAsReaderCloser(srcUrl, s3a.maybeGetFilerJwtAuthorizationToken(false), rangeHeader)
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if err != nil {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
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return
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}
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defer util_http.CloseResponse(resp)
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defer dataReader.Close()
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glog.V(2).Infof("copy from %s to %s", srcUrl, dstUrl)
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destination := fmt.Sprintf("%s/%s%s", s3a.option.BucketsPath, dstBucket, dstObject)
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etag, errCode := s3a.putToFiler(r, dstUrl, dataReader, destination, dstBucket)
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if errCode != s3err.ErrNone {
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s3err.WriteErrorResponse(w, r, errCode)
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return
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}
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setEtag(w, etag)
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response := CopyPartResult{
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ETag: etag,
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LastModified: time.Now().UTC(),
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}
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writeSuccessResponseXML(w, r, response)
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}
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func replaceDirective(reqHeader http.Header) (replaceMeta, replaceTagging bool) {
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return reqHeader.Get(s3_constants.AmzUserMetaDirective) == DirectiveReplace, reqHeader.Get(s3_constants.AmzObjectTaggingDirective) == DirectiveReplace
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}
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func processMetadata(reqHeader, existing http.Header, replaceMeta, replaceTagging bool, getTags func(parentDirectoryPath string, entryName string) (tags map[string]string, err error), dir, name string) (err error) {
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if sc := reqHeader.Get(s3_constants.AmzStorageClass); len(sc) == 0 {
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if sc := existing[s3_constants.AmzStorageClass]; len(sc) > 0 {
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reqHeader[s3_constants.AmzStorageClass] = sc
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}
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}
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if !replaceMeta {
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for header, _ := range reqHeader {
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if strings.HasPrefix(header, s3_constants.AmzUserMetaPrefix) {
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delete(reqHeader, header)
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}
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}
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for k, v := range existing {
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if strings.HasPrefix(k, s3_constants.AmzUserMetaPrefix) {
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reqHeader[k] = v
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}
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}
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}
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if !replaceTagging {
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for header, _ := range reqHeader {
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if strings.HasPrefix(header, s3_constants.AmzObjectTagging) {
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delete(reqHeader, header)
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}
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}
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found := false
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for k, _ := range existing {
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if strings.HasPrefix(k, s3_constants.AmzObjectTaggingPrefix) {
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found = true
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break
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}
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}
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if found {
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tags, err := getTags(dir, name)
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if err != nil {
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return err
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}
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var tagArr []string
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for k, v := range tags {
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tagArr = append(tagArr, fmt.Sprintf("%s=%s", k, v))
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}
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tagStr := strutil.JoinFields(tagArr, "&")
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reqHeader.Set(s3_constants.AmzObjectTagging, tagStr)
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}
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}
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return
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}
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func processMetadataBytes(reqHeader http.Header, existing map[string][]byte, replaceMeta, replaceTagging bool) (metadata map[string][]byte, err error) {
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metadata = make(map[string][]byte)
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if sc := existing[s3_constants.AmzStorageClass]; len(sc) > 0 {
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metadata[s3_constants.AmzStorageClass] = sc
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}
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if sc := reqHeader.Get(s3_constants.AmzStorageClass); len(sc) > 0 {
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metadata[s3_constants.AmzStorageClass] = []byte(sc)
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}
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if replaceMeta {
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for header, values := range reqHeader {
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if strings.HasPrefix(header, s3_constants.AmzUserMetaPrefix) {
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for _, value := range values {
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metadata[header] = []byte(value)
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}
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}
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}
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} else {
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for k, v := range existing {
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if strings.HasPrefix(k, s3_constants.AmzUserMetaPrefix) {
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metadata[k] = v
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}
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}
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}
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if replaceTagging {
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if tags := reqHeader.Get(s3_constants.AmzObjectTagging); tags != "" {
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parsedTags, err := parseTagsHeader(tags)
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if err != nil {
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return nil, err
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}
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err = ValidateTags(parsedTags)
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if err != nil {
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return nil, err
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}
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for k, v := range parsedTags {
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metadata[s3_constants.AmzObjectTagging+"-"+k] = []byte(v)
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}
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}
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} else {
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for k, v := range existing {
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if strings.HasPrefix(k, s3_constants.AmzObjectTagging) {
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metadata[k] = v
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}
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}
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delete(metadata, s3_constants.AmzTagCount)
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}
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return
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}
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