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// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package app
import (
"bytes"
"image"
_ "image/gif"
_ "image/jpeg"
"image/png"
"mime/multipart"
"net/http"
"time"
"github.com/mattermost/mattermost-server/model"
)
const (
BRAND_FILE_PATH = "brand/"
BRAND_FILE_NAME = "image.png"
)
func (a *App) SaveBrandImage(imageData *multipart.FileHeader) *model.AppError {
if len(*a.Config().FileSettings.DriverName) == 0 {
return model.NewAppError("SaveBrandImage", "api.admin.upload_brand_image.storage.app_error", nil, "", http.StatusNotImplemented)
}
file, err := imageData.Open()
defer file.Close()
if err != nil {
return model.NewAppError("SaveBrandImage", "brand.save_brand_image.open.app_error", nil, err.Error(), http.StatusBadRequest)
}
// Decode image config first to check dimensions before loading the whole thing into memory later on
config, _, err := image.DecodeConfig(file)
if err != nil {
return model.NewAppError("SaveBrandImage", "brand.save_brand_image.decode_config.app_error", nil, err.Error(), http.StatusBadRequest)
} else if config.Width*config.Height > model.MaxImageSize {
return model.NewAppError("SaveBrandImage", "brand.save_brand_image.too_large.app_error", nil, err.Error(), http.StatusBadRequest)
}
file.Seek(0, 0)
img, _, err := image.Decode(file)
if err != nil {
return model.NewAppError("SaveBrandImage", "brand.save_brand_image.decode.app_error", nil, err.Error(), http.StatusBadRequest)
}
buf := new(bytes.Buffer)
err = png.Encode(buf, img)
if err != nil {
return model.NewAppError("SaveBrandImage", "brand.save_brand_image.encode.app_error", nil, err.Error(), http.StatusInternalServerError)
}
t := time.Now()
a.MoveFile(BRAND_FILE_PATH+BRAND_FILE_NAME, BRAND_FILE_PATH+t.Format("2006-01-02T15:04:05")+".png")
if _, err := a.WriteFile(buf, BRAND_FILE_PATH+BRAND_FILE_NAME); err != nil {
return model.NewAppError("SaveBrandImage", "brand.save_brand_image.save_image.app_error", nil, "", http.StatusInternalServerError)
}
return nil
}
func (a *App) GetBrandImage() ([]byte, *model.AppError) {
if len(*a.Config().FileSettings.DriverName) == 0 {
return nil, model.NewAppError("GetBrandImage", "api.admin.get_brand_image.storage.app_error", nil, "", http.StatusNotImplemented)
}
img, err := a.ReadFile(BRAND_FILE_PATH + BRAND_FILE_NAME)
if err != nil {
return nil, err
}
return img, nil
}
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