101 lines
3.1 KiB
Swift
101 lines
3.1 KiB
Swift
// SPDX-License-Identifier: MIT
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// Copyright © 2018-2019 WireGuard LLC. All Rights Reserved.
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import Foundation
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import Network
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public struct Endpoint {
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public let host: NWEndpoint.Host
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public let port: NWEndpoint.Port
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public init(host: NWEndpoint.Host, port: NWEndpoint.Port) {
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self.host = host
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self.port = port
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}
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}
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extension Endpoint: Equatable {
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public static func == (lhs: Endpoint, rhs: Endpoint) -> Bool {
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return lhs.host == rhs.host && lhs.port == rhs.port
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}
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}
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extension Endpoint: Hashable {
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public func hash(into hasher: inout Hasher) {
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hasher.combine(host)
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hasher.combine(port)
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}
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}
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extension Endpoint {
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public var stringRepresentation: String {
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switch host {
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case .name(let hostname, _):
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return "\(hostname):\(port)"
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case .ipv4(let address):
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return "\(address):\(port)"
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case .ipv6(let address):
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return "[\(address)]:\(port)"
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@unknown default:
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fatalError()
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}
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}
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public init?(from string: String) {
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// Separation of host and port is based on 'parse_endpoint' function in
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// https://git.zx2c4.com/wireguard-tools/tree/src/config.c
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guard !string.isEmpty else { return nil }
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let startOfPort: String.Index
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let hostString: String
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if string.first! == "[" {
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// Look for IPv6-style endpoint, like [::1]:80
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let startOfHost = string.index(after: string.startIndex)
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guard let endOfHost = string.dropFirst().firstIndex(of: "]") else { return nil }
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let afterEndOfHost = string.index(after: endOfHost)
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guard string[afterEndOfHost] == ":" else { return nil }
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startOfPort = string.index(after: afterEndOfHost)
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hostString = String(string[startOfHost ..< endOfHost])
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} else {
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// Look for an IPv4-style endpoint, like 127.0.0.1:80
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guard let endOfHost = string.firstIndex(of: ":") else { return nil }
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startOfPort = string.index(after: endOfHost)
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hostString = String(string[string.startIndex ..< endOfHost])
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}
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guard let endpointPort = NWEndpoint.Port(String(string[startOfPort ..< string.endIndex])) else { return nil }
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let invalidCharacterIndex = hostString.unicodeScalars.firstIndex { char in
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return !CharacterSet.urlHostAllowed.contains(char)
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}
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guard invalidCharacterIndex == nil else { return nil }
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host = NWEndpoint.Host(hostString)
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port = endpointPort
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}
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}
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extension Endpoint {
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public func hasHostAsIPAddress() -> Bool {
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switch host {
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case .name:
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return false
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case .ipv4:
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return true
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case .ipv6:
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return true
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@unknown default:
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fatalError()
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}
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}
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public func hostname() -> String? {
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switch host {
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case .name(let hostname, _):
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return hostname
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case .ipv4:
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return nil
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case .ipv6:
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return nil
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@unknown default:
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fatalError()
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}
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}
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}
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