34 lines
748 B
Go
34 lines
748 B
Go
package nat
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import (
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"fmt"
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"strconv"
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"strings"
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)
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// ParsePortRange parses and validates the specified string as a port-range (8000-9000)
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func ParsePortRange(ports string) (uint64, uint64, error) {
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if ports == "" {
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return 0, 0, fmt.Errorf("empty string specified for ports")
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}
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if !strings.Contains(ports, "-") {
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start, err := strconv.ParseUint(ports, 10, 16)
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end := start
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return start, end, err
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}
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parts := strings.Split(ports, "-")
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start, err := strconv.ParseUint(parts[0], 10, 16)
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if err != nil {
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return 0, 0, err
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}
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end, err := strconv.ParseUint(parts[1], 10, 16)
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if err != nil {
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return 0, 0, err
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}
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if end < start {
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return 0, 0, fmt.Errorf("invalid range specified for port: %s", ports)
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}
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return start, end, nil
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}
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