51 lines
2 KiB
Swift
51 lines
2 KiB
Swift
import libburrow
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import NetworkExtension
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import OSLog
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class PacketTunnelProvider: NEPacketTunnelProvider {
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let logger = Logger(subsystem: "com.hackclub.burrow", category: "General")
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override func startTunnel(options: [String: NSObject]?, completionHandler: @escaping (Error?) -> Void) {
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libburrow.initialize_oslog()
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let fild = libburrow.retrieve()
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if fild == -1 {
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// Not sure if this is the right way to return an error
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logger.error("Failed to retrieve file descriptor for burrow.")
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let err = NSError(
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domain: "com.hackclub.burrow",
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code: 1_010,
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userInfo: [NSLocalizedDescriptionKey: "Failed to find TunInterface"]
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)
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completionHandler(err)
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}
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logger.info("fd: \(fild)")
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let networkSettings = genNetSec(fild: fild)
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logger.info("Network Settings: - ipv4:\(networkSettings.ipv4Settings) -mtu: \(networkSettings.mtu)")
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completionHandler(nil)
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}
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override func stopTunnel(with reason: NEProviderStopReason, completionHandler: @escaping () -> Void) {
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completionHandler()
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}
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func genNetSec(fild: Int32) -> NEPacketTunnelNetworkSettings {
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logger.debug("getting Network settings with fild \(fild) ...")
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let settings = libburrow.getNetworkSettings(fild)
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logger.debug("genNetSec Called: \n ipv4: \(settings.ipv4_addr) \n netmask: \(settings.ipv4_netmask) \n mtu: \(settings.mtu)")
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let tNetworksettings = TunCrateNetworkSettings(addr: settings.ipv4_addr, netmask: settings.ipv4_netmask, mtu: settings.mtu)
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return tNetworksettings.generateNetworkSettings()
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}
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override func handleAppMessage(_ messageData: Data, completionHandler: ((Data?) -> Void)?) {
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if let handler = completionHandler {
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handler(messageData)
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}
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}
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override func sleep(completionHandler: @escaping () -> Void) {
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completionHandler()
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}
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override func wake() {
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}
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}
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