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package static
import (
"github.com/pkg/errors"
"os"
"path"
"strings"
)
// Config describes file location and controls access to them.
type Config struct {
// Enables StaticFile service.
Enable bool
// Dir contains name of directory to control access to.
Dir string
// Forbid specifies list of file extensions which are forbidden for access.
// Example: .php, .exe, .bat, .htaccess and etc.
Forbid []string
}
// Forbids must return true if file extension is not allowed for the upload.
func (cfg *Config) Forbids(filename string) bool {
ext := strings.ToLower(path.Ext(filename))
for _, v := range cfg.Forbid {
if ext == v {
return true
}
}
return false
}
// Valid validates existence of directory.
func (cfg *Config) Valid() error {
st, err := os.Stat(cfg.Dir)
if err != nil {
if os.IsNotExist(err) {
return errors.New("root directory does not exists")
}
return err
}
if !st.IsDir() {
return errors.New("invalid root directory")
}
return nil
}
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