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validate.go
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validate.go
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/*
Nging is a toolbox for webmasters
Copyright (C) 2018-present Wenhui Shen <swh@admpub.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package upload
import (
"path"
"strings"
"github.com/webx-top/com"
"github.com/webx-top/echo"
"github.com/admpub/errors"
)
var (
ErrUnsupportedExtension = errors.New("不支持的文件扩展名")
ErrIncorrectPath = errors.New("路径不合法")
)
// IsRightUploadFile 是否是正确的上传文件
var IsRightUploadFile = func(ctx echo.Context, src string) error {
src = path.Clean(src)
ext := strings.ToLower(path.Ext(src))
cfg := Get()
if !com.InSlice(ext, cfg.AllowedExtensions) {
return errors.WithMessage(ErrIncorrectPath, ext)
}
if !strings.HasPrefix(src, UploadURLPath) {
return ErrIncorrectPath
}
return nil
}