photoprism/pkg/clean/path.go

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package clean
import (
"path"
"strings"
"unicode"
)
// Path removes invalid character from a path string.
func Path(s string) string {
if s == "" || reject(s, 512) || strings.Contains(s, "..") || strings.Contains(s, "//") {
return ""
}
// Trim whitespace.
s = strings.TrimSpace(s)
// Remove non-printable and other potentially problematic characters.
s = strings.Map(func(r rune) rune {
if !unicode.IsPrint(r) {
return -1
}
switch r {
case '~', '\\', ':', '|', '"', '?', '*', '<', '>', '{', '}':
return -1
default:
return r
}
}, s)
return s
}
// UserPath sanitizes and normalizes a user provided path, so it can be used.
func UserPath(dir string) string {
if dir == "" {
return dir
}
dir = strings.Trim(path.Clean(Path(strings.ReplaceAll(dir, "\\", "/"))), "./ \\*%#~?|<>:")
if strings.Contains(dir, "/.") || strings.Contains(dir, "..") || strings.Contains(dir, "//") {
return ""
}
return dir
}