1	/*
     2	Copyright 2011 The Perkeep Authors
     3	
     4	Licensed under the Apache License, Version 2.0 (the "License");
     5	you may not use this file except in compliance with the License.
     6	You may obtain a copy of the License at
     7	
     8	     http://www.apache.org/licenses/LICENSE-2.0
     9	
    10	Unless required by applicable law or agreed to in writing, software
    11	distributed under the License is distributed on an "AS IS" BASIS,
    12	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13	See the License for the specific language governing permissions and
    14	limitations under the License.
    15	*/
    16	
    17	package server
    18	
    19	import (
    20		"io"
    21		"log"
    22		"net/http"
    23	
    24		"go4.org/types"
    25		"perkeep.org/internal/httputil"
    26		"perkeep.org/pkg/blob"
    27		"perkeep.org/pkg/schema"
    28	)
    29	
    30	// uploadHelperResponse is the response from serveUploadHelper.
    31	type uploadHelperResponse struct {
    32		Got []*uploadHelperGotItem `json:"got"`
    33	}
    34	
    35	type uploadHelperGotItem struct {
    36		FileName string         `json:"filename"`
    37		ModTime  types.Time3339 `json:"modtime"`
    38		FormName string         `json:"formname"`
    39		FileRef  blob.Ref       `json:"fileref"`
    40	}
    41	
    42	func (ui *UIHandler) serveUploadHelper(rw http.ResponseWriter, req *http.Request) {
    43		ctx := req.Context()
    44		if ui.root.Storage == nil {
    45			httputil.ServeJSONError(rw, httputil.ServerError("No BlobRoot configured"))
    46			return
    47		}
    48	
    49		mr, err := req.MultipartReader()
    50		if err != nil {
    51			httputil.ServeJSONError(rw, httputil.ServerError("reading body: "+err.Error()))
    52			return
    53		}
    54	
    55		var got []*uploadHelperGotItem
    56		var modTime types.Time3339
    57		for {
    58			part, err := mr.NextPart()
    59			if err == io.EOF {
    60				break
    61			}
    62			if err != nil {
    63				httputil.ServeJSONError(rw, httputil.ServerError("reading body: "+err.Error()))
    64				break
    65			}
    66			if part.FormName() == "modtime" {
    67				payload, err := io.ReadAll(part)
    68				if err != nil {
    69					log.Printf("ui uploadhelper: unable to read part for modtime: %v", err)
    70					continue
    71				}
    72				modTime = types.ParseTime3339OrZero(string(payload))
    73				continue
    74			}
    75			fileName := part.FileName()
    76			if fileName == "" {
    77				continue
    78			}
    79			br, err := schema.WriteFileFromReaderWithModTime(ctx, ui.root.Storage, fileName, modTime.Time(), part)
    80			if err != nil {
    81				httputil.ServeJSONError(rw, httputil.ServerError("writing to blobserver: "+err.Error()))
    82				return
    83			}
    84			got = append(got, &uploadHelperGotItem{
    85				FileName: part.FileName(),
    86				ModTime:  modTime,
    87				FormName: part.FormName(),
    88				FileRef:  br,
    89			})
    90		}
    91	
    92		httputil.ReturnJSON(rw, &uploadHelperResponse{Got: got})
    93	}