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Diffstat (limited to 'WireGuard/Shared/Model/Endpoint.swift')
-rw-r--r-- | WireGuard/Shared/Model/Endpoint.swift | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/WireGuard/Shared/Model/Endpoint.swift b/WireGuard/Shared/Model/Endpoint.swift new file mode 100644 index 0000000..a46d6b7 --- /dev/null +++ b/WireGuard/Shared/Model/Endpoint.swift @@ -0,0 +1,90 @@ +// SPDX-License-Identifier: MIT +// Copyright © 2018 WireGuard LLC. All Rights Reserved. + +import Foundation +import Network + +@available(OSX 10.14, iOS 12.0, *) +struct Endpoint { + let host: NWEndpoint.Host + let port: NWEndpoint.Port +} + +// MARK: Converting to and from String +// For use in the UI + +extension Endpoint { + init?(from string: String) { + // Separation of host and port is based on 'parse_endpoint' function in + // https://git.zx2c4.com/WireGuard/tree/src/tools/config.c + guard (!string.isEmpty) else { return nil } + let startOfPort: String.Index + let hostString: String + if (string.first! == "[") { + // Look for IPv6-style endpoint, like [::1]:80 + let startOfHost = string.index(after: string.startIndex) + guard let endOfHost = string.dropFirst().firstIndex(of: "]") else { return nil } + let afterEndOfHost = string.index(after: endOfHost) + guard (string[afterEndOfHost] == ":") else { return nil } + startOfPort = string.index(after: afterEndOfHost) + hostString = String(string[startOfHost ..< endOfHost]) + } else { + // Look for an IPv4-style endpoint, like 127.0.0.1:80 + guard let endOfHost = string.firstIndex(of: ":") else { return nil } + startOfPort = string.index(after: endOfHost) + hostString = String(string[string.startIndex ..< endOfHost]) + } + guard let endpointPort = NWEndpoint.Port(String(string[startOfPort ..< string.endIndex])) else { return nil } + let invalidCharacterIndex = hostString.unicodeScalars.firstIndex { (c) -> Bool in + return !CharacterSet.urlHostAllowed.contains(c) + } + guard (invalidCharacterIndex == nil) else { return nil } + host = NWEndpoint.Host(hostString) + port = endpointPort + } + func stringRepresentation() -> String { + switch (host) { + case .name(let hostname, _): + return "\(hostname):\(port)" + case .ipv4(let address): + return "\(address):\(port)" + case .ipv6(let address): + return "[\(address)]:\(port)" + } + } +} + +// MARK: Codable +// For serializing to disk + +@available(OSX 10.14, iOS 12.0, *) +extension Endpoint: Codable { + public func encode(to encoder: Encoder) throws { + var container = encoder.singleValueContainer() + try container.encode(self.stringRepresentation()) + } + public init(from decoder: Decoder) throws { + let container = try decoder.singleValueContainer() + let endpointString = try container.decode(String.self) + guard let endpoint = Endpoint(from: endpointString) else { + throw DecodingError.invalidData + } + self = endpoint + } + enum DecodingError: Error { + case invalidData + } +} + +extension Endpoint { + func hasHostAsIPAddress() -> Bool { + switch (host) { + case .name(_, _): + return false + case .ipv4(_): + return true + case .ipv6(_): + return true + } + } +} |