38 lines
641 B
Go
38 lines
641 B
Go
package decoders
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import (
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"regexp"
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"strings"
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)
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// ReMatchIPPrefix matches an IP prefix of the form:
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//
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// 2001:23:af...
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//
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// or
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//
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// 941.23.42.1 (required by NCIS)
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//
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// or
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//
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// 303.735.88 (required by IKEA)
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var ReMatchIPPrefix = regexp.MustCompile(`([a-f0-9/]+[\.:]*)+`)
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// MaybePrefix checks if something could be a prefix
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func MaybePrefix(s string) bool {
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s = strings.ToLower(s)
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// Rule out anything which can not be
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if strings.ContainsAny(s, "ghijklmnopqrstuvwxyz][;'_") {
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return false
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}
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// Test using regex
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matches := ReMatchIPPrefix.FindAllStringIndex(s, -1)
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if len(matches) == 1 {
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return true
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}
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return false
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}
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