Move model helpers to model directory

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 38 insertions, 0 deletions

diff --git a/WireGuard/Shared/Model/NETunnelProviderProtocol+Extension.swift b/WireGuard/Shared/Model/NETunnelProviderProtocol+Extension.swift
new file mode 100644
index 0000000..98634fd
--- /dev/null
+++ b/WireGuard/Shared/Model/NETunnelProviderProtocol+Extension.swift
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: MIT
+// Copyright © 2018 WireGuard LLC. All Rights Reserved.
+
+import NetworkExtension
+
+extension NETunnelProviderProtocol {
+
+    enum Keys: String {
+        case wgQuickConfig = "WgQuickConfig"
+    }
+
+    convenience init?(tunnelConfiguration: TunnelConfiguration) {
+        self.init()
+
+        let appId = Bundle.main.bundleIdentifier!
+        providerBundleIdentifier = "\(appId).network-extension"
+        providerConfiguration = [Keys.wgQuickConfig.rawValue: tunnelConfiguration.asWgQuickConfig()]
+
+        let endpoints = tunnelConfiguration.peers.compactMap { $0.endpoint }
+        if endpoints.count == 1 {
+            serverAddress = endpoints[0].stringRepresentation
+        } else if endpoints.isEmpty {
+            serverAddress = "Unspecified"
+        } else {
+            serverAddress = "Multiple endpoints"
+        }
+
+        //TODO(roopc): Why are we doing this? Just for kicks? Is it useful? Seems needless.
+        username = tunnelConfiguration.name
+    }
+
+    func asTunnelConfiguration(called name: String? = nil) -> TunnelConfiguration? {
+        migrateConfigurationIfNeeded()
+        guard let serializedConfig = providerConfiguration?[Keys.wgQuickConfig.rawValue] as? String else { return nil }
+        return try? TunnelConfiguration(fromWgQuickConfig: serializedConfig, called: name)
+    }
+
+}