package s3api import ( "context" "encoding/xml" "fmt" "github.com/chrislusf/seaweedfs/weed/s3api/s3_constants" "math" "net/http" "time" xhttp "github.com/chrislusf/seaweedfs/weed/s3api/http" "github.com/chrislusf/seaweedfs/weed/s3api/s3err" "github.com/aws/aws-sdk-go/aws" "github.com/aws/aws-sdk-go/service/s3" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" ) type ListAllMyBucketsResult struct { XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ListAllMyBucketsResult"` Owner *s3.Owner Buckets []*s3.Bucket `xml:"Buckets>Bucket"` } func (s3a *S3ApiServer) ListBucketsHandler(w http.ResponseWriter, r *http.Request) { glog.V(3).Infof("ListBucketsHandler") var identity *Identity var s3Err s3err.ErrorCode if s3a.iam.isEnabled() { identity, s3Err = s3a.iam.authUser(r) if s3Err != s3err.ErrNone { s3err.WriteErrorResponse(w, s3Err, r) return } } var response ListAllMyBucketsResult entries, _, err := s3a.list(s3a.option.BucketsPath, "", "", false, math.MaxInt32) if err != nil { s3err.WriteErrorResponse(w, s3err.ErrInternalError, r) return } identityId := r.Header.Get(xhttp.AmzIdentityId) var buckets []*s3.Bucket for _, entry := range entries { if entry.IsDirectory { if identity != nil && !identity.canDo(s3_constants.ACTION_LIST, entry.Name) { continue } buckets = append(buckets, &s3.Bucket{ Name: aws.String(entry.Name), CreationDate: aws.Time(time.Unix(entry.Attributes.Crtime, 0).UTC()), }) } } response = ListAllMyBucketsResult{ Owner: &s3.Owner{ ID: aws.String(identityId), DisplayName: aws.String(identityId), }, Buckets: buckets, } writeSuccessResponseXML(w, response) } func (s3a *S3ApiServer) PutBucketHandler(w http.ResponseWriter, r *http.Request) { bucket, _ := getBucketAndObject(r) glog.V(3).Infof("PutBucketHandler %s", bucket) // avoid duplicated buckets errCode := s3err.ErrNone if err := s3a.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error { if resp, err := client.CollectionList(context.Background(), &filer_pb.CollectionListRequest{ IncludeEcVolumes: true, IncludeNormalVolumes: true, }); err != nil { glog.Errorf("list collection: %v", err) return fmt.Errorf("list collections: %v", err) } else { for _, c := range resp.Collections { if bucket == c.Name { errCode = s3err.ErrBucketAlreadyExists break } } } return nil }); err != nil { s3err.WriteErrorResponse(w, s3err.ErrInternalError, r) return } if exist, err := s3a.exists(s3a.option.BucketsPath, bucket, true); err == nil && exist { errCode = s3err.ErrBucketAlreadyExists } if errCode != s3err.ErrNone { s3err.WriteErrorResponse(w, errCode, r) return } fn := func(entry *filer_pb.Entry) { if identityId := r.Header.Get(xhttp.AmzIdentityId); identityId != "" { if entry.Extended == nil { entry.Extended = make(map[string][]byte) } entry.Extended[xhttp.AmzIdentityId] = []byte(identityId) } } // create the folder for bucket, but lazily create actual collection if err := s3a.mkdir(s3a.option.BucketsPath, bucket, fn); err != nil { glog.Errorf("PutBucketHandler mkdir: %v", err) s3err.WriteErrorResponse(w, s3err.ErrInternalError, r) return } writeSuccessResponseEmpty(w) } func (s3a *S3ApiServer) DeleteBucketHandler(w http.ResponseWriter, r *http.Request) { bucket, _ := getBucketAndObject(r) glog.V(3).Infof("DeleteBucketHandler %s", bucket) if err := s3a.checkBucket(r, bucket); err != s3err.ErrNone { s3err.WriteErrorResponse(w, err, r) return } err := s3a.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error { // delete collection deleteCollectionRequest := &filer_pb.DeleteCollectionRequest{ Collection: bucket, } glog.V(1).Infof("delete collection: %v", deleteCollectionRequest) if _, err := client.DeleteCollection(context.Background(), deleteCollectionRequest); err != nil { return fmt.Errorf("delete collection %s: %v", bucket, err) } return nil }) err = s3a.rm(s3a.option.BucketsPath, bucket, false, true) if err != nil { s3err.WriteErrorResponse(w, s3err.ErrInternalError, r) return } s3err.WriteEmptyResponse(w, http.StatusNoContent) } func (s3a *S3ApiServer) HeadBucketHandler(w http.ResponseWriter, r *http.Request) { bucket, _ := getBucketAndObject(r) glog.V(3).Infof("HeadBucketHandler %s", bucket) if err := s3a.checkBucket(r, bucket); err != s3err.ErrNone { s3err.WriteErrorResponse(w, err, r) return } writeSuccessResponseEmpty(w) } func (s3a *S3ApiServer) checkBucket(r *http.Request, bucket string) s3err.ErrorCode { entry, err := s3a.getEntry(s3a.option.BucketsPath, bucket) if entry == nil || err == filer_pb.ErrNotFound { return s3err.ErrNoSuchBucket } if !s3a.hasAccess(r, entry) { return s3err.ErrAccessDenied } return s3err.ErrNone } func (s3a *S3ApiServer) hasAccess(r *http.Request, entry *filer_pb.Entry) bool { isAdmin := r.Header.Get(xhttp.AmzIsAdmin) != "" if isAdmin { return true } if entry.Extended == nil { return true } identityId := r.Header.Get(xhttp.AmzIdentityId) if id, ok := entry.Extended[xhttp.AmzIdentityId]; ok { if identityId != string(id) { return false } } return true }