59 lines
2.2 KiB
Swift
59 lines
2.2 KiB
Swift
import Foundation
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public enum FrameCodec {
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public static let maximumFrameSize = 1_200_000
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public static func encode<T: Encodable>(_ value: T) throws -> Data {
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let encoder = PropertyListEncoder(); encoder.outputFormat = .binary
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let body = try encoder.encode(value)
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guard body.count <= maximumFrameSize else { throw UMNError.invalidFrame }
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var size = UInt32(body.count).bigEndian
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return withUnsafeBytes(of: &size) { Data($0) } + body
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}
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public static func decode<T: Decodable>(_ type: T.Type, body: Data) throws -> T {
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guard body.count <= maximumFrameSize else { throw UMNError.invalidFrame }
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return try PropertyListDecoder().decode(type, from: body)
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}
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public static func bodyLength(from prefix: Data) throws -> Int {
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guard prefix.count == 4 else { throw UMNError.invalidFrame }
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let value = prefix.reduce(UInt32(0)) { ($0 << 8) | UInt32($1) }
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guard value > 0, value <= maximumFrameSize else { throw UMNError.invalidFrame }
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return Int(value)
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}
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}
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public enum IPCOperation: String, Codable, Sendable {
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case status, address, peers, routes, ping, interfaceStatus
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case aliasSet, aliasRemove, aliasList
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case firewallAllow, firewallRevoke, firewallList
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case textSend, bindText, bindStream, openStream, streamData, streamClose
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}
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public struct IPCMessage: Codable, Sendable {
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public var version: UInt16
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public var operation: IPCOperation
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public var requestID: UUID
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public var target: String?
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public var source: String?
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public var name: String?
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public var port: UInt16?
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public var firewallProtocol: FirewallProtocol?
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public var interfaceName: String?
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public var interfaceAddress: String?
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public var interfaceMTU: UInt16?
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public var helperState: String?
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public var synchronizedRouteCount: Int?
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public var dnsState: String?
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public var streamID: UInt64?
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public var data: Data?
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public var ok: Bool?
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public var message: String?
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public var values: [String]?
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public init(operation: IPCOperation, requestID: UUID = UUID()) {
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self.version = 2; self.operation = operation; self.requestID = requestID
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}
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}
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