mirror of
https://github.com/luxfi/node.git
synced 2026-10-30 15:24:05 +00:00
zeekayandHanzo Dev
37e2940ead
Two packages were named for the same word and meant different things. network/ dialed peers, exchanged keys, throttled and tracked them; nets/ tracked which chains share a validator set and when they have all bootstrapped. One letter apart, and neither name said which was which. The peer layer is mesh — the word this estate already uses for it, in lux-rs/node's own mesh.rs. That frees network for the thing that is actually a network: a set of chains sharing a validator set. A network holds chains; a chain belongs to one network. github.com/luxfi/p2p stays what it is, the gossip library the VMs use. Three concerns, three names, none of them borrowed from another. Co-authored-by: Hanzo Dev <[email protected]>
71 lines
1.7 KiB
Go
71 lines
1.7 KiB
Go
// Copyright (C) 2019-2025, Lux Industries Inc. All rights reserved.
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// See the file LICENSE for licensing terms.
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package peer
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import (
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"errors"
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"net"
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"strings"
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)
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var (
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ErrInvalidHost = errors.New("invalid host")
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ErrIPLiteralNotAllowed = errors.New("IP literals are not allowed")
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)
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// UnsignedHost represents a hostname-based endpoint claim.
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type UnsignedHost struct {
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Host string
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Port uint16
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Timestamp uint64
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}
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// CanonicalHost normalizes and validates a hostname.
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// It rejects IP literals, trims whitespace and trailing dots, and lowercases.
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func CanonicalHost(host string) (string, error) {
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canonical := strings.TrimSpace(host)
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if canonical == "" {
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return "", ErrInvalidHost
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}
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// Strip IPv6 brackets if present.
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if strings.HasPrefix(canonical, "[") && strings.HasSuffix(canonical, "]") {
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canonical = strings.TrimPrefix(canonical, "[")
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canonical = strings.TrimSuffix(canonical, "]")
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}
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// Reject IP literals (IPv4 or IPv6).
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if ip := net.ParseIP(canonical); ip != nil {
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return "", ErrIPLiteralNotAllowed
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}
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// Trim trailing dot for FQDNs.
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canonical = strings.TrimSuffix(canonical, ".")
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if canonical == "" || canonical == "." {
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return "", ErrInvalidHost
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}
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labels := strings.Split(canonical, ".")
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for _, label := range labels {
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if label == "" {
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return "", ErrInvalidHost
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}
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if len(label) > 63 {
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return "", ErrInvalidHost
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}
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if label[0] == '-' || label[len(label)-1] == '-' {
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return "", ErrInvalidHost
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}
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for i := 0; i < len(label); i++ {
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ch := label[i]
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if (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') || (ch >= '0' && ch <= '9') || ch == '-' {
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continue
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}
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return "", ErrInvalidHost
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}
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}
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return strings.ToLower(canonical), nil
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}
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