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https://github.com/luxfi/net.git
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zeekay
f8e36531a8
Replace codec/wrappers.Packer with an in-package packer (binio.go). endpoints/ only needs PackByte/PackShort/PackLong/PackFixedBytes for the gossip-ID preimage and the endpoint signing bytes — a tiny self- contained big-endian writer over a pre-sized slice. Files touched: - endpoints/binio.go (new): packer + ByteLen/ShortLen/IntLen/LongLen - endpoints/claimed_ip_port.go: drop wrappers, use local packer - endpoints/endpoint.go: drop wrappers, use local packer - endpoints/ip_port.go: drop wrappers; remove dead PackIP (no callers) go.mod direct dep on luxfi/codec removed.
74 lines
1.9 KiB
Go
74 lines
1.9 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 endpoints
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import (
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"net"
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"net/netip"
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"github.com/luxfi/crypto/hash"
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"github.com/luxfi/ids"
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luxtls "github.com/luxfi/tls"
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)
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const (
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// Certificate length, signature length, IP, timestamp, tx ID
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baseIPCertDescLen = 2*IntLen + net.IPv6len + ShortLen + LongLen + ids.IDLen
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preimageLen = ids.IDLen + LongLen
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)
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// A self contained proof that a peer is claiming ownership of an IPPort at a
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// given time.
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type ClaimedIPPort struct {
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// The peer's certificate.
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Cert *luxtls.Certificate
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// The peer's claimed IP and port.
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AddrPort netip.AddrPort
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// The time the peer claimed to own this IP and port.
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Timestamp uint64
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// [Cert]'s signature over the IPPort and timestamp.
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// This is used in the networking library to ensure that this IPPort was
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// actually claimed by the peer in question, and not by a malicious peer
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// trying to get us to dial bogus IPPorts.
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Signature []byte
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// NodeID derived from the peer certificate.
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NodeID ids.NodeID
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// GossipID derived from the nodeID and timestamp.
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GossipID ids.ID
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}
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func NewClaimedIPPort(
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cert *luxtls.Certificate,
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ipPort netip.AddrPort,
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timestamp uint64,
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signature []byte,
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) *ClaimedIPPort {
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// Convert luxtls.Certificate to ids.Certificate
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idsCert := &ids.Certificate{
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Raw: cert.Raw,
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PublicKey: cert.PublicKey,
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}
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ip := &ClaimedIPPort{
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Cert: cert,
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AddrPort: ipPort,
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Timestamp: timestamp,
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Signature: signature,
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NodeID: ids.NodeIDFromCert(idsCert),
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}
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p := packer{
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Bytes: make([]byte, preimageLen),
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}
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p.PackFixedBytes(ip.NodeID[:])
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p.PackLong(timestamp)
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ip.GossipID = hash.ComputeHash256Array(p.Bytes)
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return ip
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}
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// Returns the approximate size of the binary representation of this ClaimedIPPort.
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func (i *ClaimedIPPort) Size() int {
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return baseIPCertDescLen + len(i.Cert.Raw) + len(i.Signature)
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}
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