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Diffstat (limited to '')
-rw-r--r-- | WireGuard/Shared/Model/Legacy/LegacyEndpoint.swift | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/WireGuard/Shared/Model/Legacy/LegacyEndpoint.swift b/WireGuard/Shared/Model/Legacy/LegacyEndpoint.swift new file mode 100644 index 0000000..7a80be4 --- /dev/null +++ b/WireGuard/Shared/Model/Legacy/LegacyEndpoint.swift @@ -0,0 +1,64 @@ +// SPDX-License-Identifier: MIT +// Copyright © 2018 WireGuard LLC. All Rights Reserved. + +import Foundation +import Network + +struct LegacyEndpoint: Codable { + let host: NWEndpoint.Host + let port: NWEndpoint.Port + + public init(from decoder: Decoder) throws { + let container = try decoder.singleValueContainer() + let endpointString = try container.decode(String.self) + guard !endpointString.isEmpty else { throw DecodingError.invalidData } + let startOfPort: String.Index + let hostString: String + if endpointString.first! == "[" { + // Look for IPv6-style endpoint, like [::1]:80 + let startOfHost = endpointString.index(after: endpointString.startIndex) + guard let endOfHost = endpointString.dropFirst().firstIndex(of: "]") else { throw DecodingError.invalidData } + let afterEndOfHost = endpointString.index(after: endOfHost) + guard endpointString[afterEndOfHost] == ":" else { throw DecodingError.invalidData } + startOfPort = endpointString.index(after: afterEndOfHost) + hostString = String(endpointString[startOfHost ..< endOfHost]) + } else { + // Look for an IPv4-style endpoint, like 127.0.0.1:80 + guard let endOfHost = endpointString.firstIndex(of: ":") else { throw DecodingError.invalidData } + startOfPort = endpointString.index(after: endOfHost) + hostString = String(endpointString[endpointString.startIndex ..< endOfHost]) + } + guard let endpointPort = NWEndpoint.Port(String(endpointString[startOfPort ..< endpointString.endIndex])) else { throw DecodingError.invalidData } + let invalidCharacterIndex = hostString.unicodeScalars.firstIndex { char in + return !CharacterSet.urlHostAllowed.contains(char) + } + guard invalidCharacterIndex == nil else { throw DecodingError.invalidData } + host = NWEndpoint.Host(hostString) + port = endpointPort + } + + public func encode(to encoder: Encoder) throws { + let stringRepresentation: String + switch host { + case .name(let hostname, _): + stringRepresentation = "\(hostname):\(port)" + case .ipv4(let address): + stringRepresentation = "\(address):\(port)" + case .ipv6(let address): + stringRepresentation = "[\(address)]:\(port)" + } + + var container = encoder.singleValueContainer() + try container.encode(stringRepresentation) + } + + enum DecodingError: Error { + case invalidData + } +} + +extension LegacyEndpoint { + var migrated: Endpoint { + return Endpoint(host: host, port: port) + } +} |