86 lines
2.1 KiB
Go
86 lines
2.1 KiB
Go
// Copyright (c) 2017-2026 Lethean (https://lt.hn)
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//
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// Licensed under the European Union Public Licence (EUPL) version 1.2.
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// SPDX-License-Identifier: EUPL-1.2
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package p2p
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import (
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"strconv"
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"strings"
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)
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const (
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// MinimumRequiredBuildVersionMainnet matches the C++ daemon's mainnet gate.
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MinimumRequiredBuildVersionMainnet uint64 = 601
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// MinimumRequiredBuildVersionTestnet matches the C++ daemon's testnet gate.
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MinimumRequiredBuildVersionTestnet uint64 = 2
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)
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// MinimumRequiredBuildVersion returns the minimum accepted peer version gate
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// for the given network.
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//
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// Example:
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//
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// MinimumRequiredBuildVersion(false) // 601 on mainnet
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func MinimumRequiredBuildVersion(isTestnet bool) uint64 {
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if isTestnet {
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return MinimumRequiredBuildVersionTestnet
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}
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return MinimumRequiredBuildVersionMainnet
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}
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// PeerBuildVersion extracts the numeric major.minor.revision component from a
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// daemon client version string.
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//
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// The daemon formats its version as "major.minor.revision.build[extra]".
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// The minimum build gate compares the first three components, so
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// "6.0.1.2[go-blockchain]" becomes 601.
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func PeerBuildVersion(clientVersion string) (uint64, bool) {
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parts := strings.SplitN(clientVersion, ".", 4)
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if len(parts) < 3 {
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return 0, false
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}
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major, err := strconv.ParseUint(parts[0], 10, 64)
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if err != nil {
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return 0, false
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}
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minor, err := strconv.ParseUint(parts[1], 10, 64)
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if err != nil {
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return 0, false
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}
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revPart := parts[2]
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for i := 0; i < len(revPart); i++ {
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if revPart[i] < '0' || revPart[i] > '9' {
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revPart = revPart[:i]
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break
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}
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}
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if revPart == "" {
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return 0, false
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}
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revision, err := strconv.ParseUint(revPart, 10, 64)
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if err != nil {
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return 0, false
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}
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return major*100 + minor*10 + revision, true
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}
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// MeetsMinimumBuildVersion reports whether the peer's version is acceptable
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// for the given network.
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//
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// Example:
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//
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// MeetsMinimumBuildVersion("6.0.1.2[go-blockchain]", false) // true
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func MeetsMinimumBuildVersion(clientVersion string, isTestnet bool) bool {
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buildVersion, ok := PeerBuildVersion(clientVersion)
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if !ok {
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return false
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}
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return buildVersion >= MinimumRequiredBuildVersion(isTestnet)
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}
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