mirror of
https://github.com/TecharoHQ/anubis.git
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45 lines
804 B
Go
45 lines
804 B
Go
package config
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import (
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"errors"
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"fmt"
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)
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var (
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ErrPrivateASN = errors.New("bot.ASNs: you have specified a private use ASN")
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)
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type ASNs struct {
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Match []uint32 `json:"match"`
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}
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func (a *ASNs) Valid() error {
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var errs []error
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for _, asn := range a.Match {
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if isPrivateASN(asn) {
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errs = append(errs, fmt.Errorf("%w: %d is private (see RFC 6996)", ErrPrivateASN, asn))
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}
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}
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if len(errs) != 0 {
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return fmt.Errorf("bot.ASNs: invalid ASN settings: %w", errors.Join(errs...))
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}
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return nil
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}
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// isPrivateASN checks if an ASN is in the private use area.
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//
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// Based on RFC 6996 and IANA allocations.
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func isPrivateASN(asn uint32) bool {
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switch {
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case asn >= 64512 && asn <= 65534:
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return true
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case asn >= 4200000000 && asn <= 4294967294:
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return true
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default:
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return false
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}
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}
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