34 lines
651 B
Go
34 lines
651 B
Go
package ctlsocksrv
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import (
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"path/filepath"
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"strings"
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)
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// SanitizePath adapts filepath.Clean for FUSE paths.
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// 1. Leading slash(es) are dropped
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// 2. It returns "" instead of "."
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// 3. If the cleaned path points above CWD (start with ".."), an empty string
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// is returned
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//
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// See the TestSanitizePath testcases for examples.
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func SanitizePath(path string) string {
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// (1)
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for len(path) > 0 && path[0] == '/' {
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path = path[1:]
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}
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if len(path) == 0 {
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return ""
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}
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clean := filepath.Clean(path)
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// (2)
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if clean == "." {
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return ""
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}
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// (3)
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if clean == ".." || strings.HasPrefix(clean, "../") {
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return ""
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}
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return clean
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}
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