22 lines
473 B
Go
22 lines
473 B
Go
package utils
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import (
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"crypto/sha512"
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"fmt"
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)
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const (
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maxChainLength = 28
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chainPrefix = "CNI-"
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prefixLength = len(chainPrefix)
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)
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// Generates a chain name to be used with iptables.
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// Ensures that the generated chain name is less than
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// maxChainLength chars in length
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func FormatChainName(name string, id string) string {
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chainBytes := sha512.Sum512([]byte(name + id))
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chain := fmt.Sprintf("%s%x", chainPrefix, chainBytes)
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return chain[:maxChainLength]
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}
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