package website import ( "bytes" "encoding/base64" "encoding/json" "fmt" "image" "io" "net/http" "strconv" "strings" "git.handmade.network/hmn/hmn/src/assets" "git.handmade.network/hmn/hmn/src/hmnurl" "git.handmade.network/hmn/hmn/src/models" ) type AssetUploadResult struct { Url string `json:"url,omitempty"` Mime string `json:"mime,omitempty"` Error string `json:"error,omitempty"` } const assetMaxSize = 10 * 1024 * 1024 const assetMaxSizeAdmin = 10 * 1024 * 1024 * 1024 func AssetMaxSize(user *models.User) int { if user.IsStaff { return assetMaxSizeAdmin } else { return assetMaxSize } } func AssetUpload(c *RequestContext) ResponseData { maxFilesize := AssetMaxSize(c.CurrentUser) contentLength, hasLength := c.Req.Header["Content-Length"] if hasLength { filesize, err := strconv.Atoi(contentLength[0]) if err == nil && filesize > maxFilesize { res := ResponseData{ StatusCode: http.StatusOK, } jsonString, _ := json.Marshal(AssetUploadResult{ Error: fmt.Sprintf("Filesize too big. Maximum size is %d.", maxFilesize), }) res.Write(jsonString) return res } } filenameHeader, hasFilename := c.Req.Header["Hmn-Upload-Filename"] originalFilename := "upload" if hasFilename { decodedFilename, err := base64.StdEncoding.DecodeString(filenameHeader[0]) if err == nil { originalFilename = string(decodedFilename) } } bodyReader := http.MaxBytesReader(c.Res, c.Req.Body, int64(maxFilesize)) data, err := io.ReadAll(bodyReader) if err != nil { res := ResponseData{ StatusCode: http.StatusBadRequest, Errors: []error{err}, } return res } mimeType := http.DetectContentType(data) width := 0 height := 0 if strings.HasPrefix(mimeType, "image") { config, _, err := image.DecodeConfig(bytes.NewReader(data)) if err == nil { width = config.Width height = config.Height } else { // NOTE(asaf): Not image mimeType = "application/octet-stream" } } asset, err := assets.Create(c.Context(), c.Conn, assets.CreateInput{ Content: data, Filename: originalFilename, ContentType: mimeType, UploaderID: &c.CurrentUser.ID, Width: width, Height: height, }) if err != nil { res := ResponseData{ StatusCode: http.StatusBadRequest, Errors: []error{err}, } return res } res := ResponseData{ StatusCode: http.StatusOK, } jsonString, err := json.Marshal(AssetUploadResult{ Url: hmnurl.BuildS3Asset(asset.S3Key), Mime: asset.MimeType, }) res.Write(jsonString) return res }