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https://github.com/warmbly/warmbly.git
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Matthew MeszarosandDevin AI
5ae09e0e15
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
35 lines
774 B
Go
35 lines
774 B
Go
package publicip
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import (
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"net/netip"
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"strings"
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)
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func IPv4(raw string) (string, bool) {
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ip, err := netip.ParseAddr(strings.TrimSpace(raw))
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if err != nil {
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return "", false
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}
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ip = ip.Unmap()
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if !ip.Is4() || !ip.IsGlobalUnicast() || ip.IsPrivate() {
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return "", false
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}
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for _, prefix := range nonPublicPrefixes {
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if prefix.Contains(ip) {
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return "", false
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}
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}
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return ip.String(), true
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}
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var nonPublicPrefixes = []netip.Prefix{
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netip.MustParsePrefix("0.0.0.0/8"),
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netip.MustParsePrefix("100.64.0.0/10"),
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netip.MustParsePrefix("192.0.0.0/24"),
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netip.MustParsePrefix("192.0.2.0/24"),
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netip.MustParsePrefix("198.18.0.0/15"),
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netip.MustParsePrefix("198.51.100.0/24"),
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netip.MustParsePrefix("203.0.113.0/24"),
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netip.MustParsePrefix("240.0.0.0/4"),
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}
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