74 lines
2.6 KiB
C#
74 lines
2.6 KiB
C#
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using ServiceShared;
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using ServiceShared.Crypto;
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using ServiceShared.Models.Request;
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using ServiceShared.Models.Response;
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namespace ServiceInside.Service
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{
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public static class ServiceOutside
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{
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/// <summary>
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/// URL of ServiceOutside
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/// </summary>
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private static string ServiceOutsideURL;
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/// <summary>
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/// Sets the URL of ServiceOutside
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/// </summary>
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/// <param name="serviceOutsideURL">Url of OutsideService</param>
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public static void SetServiceOutsideURL(string serviceOutsideURL)
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{
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ServiceOutsideURL = serviceOutsideURL;
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}
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/// <summary>
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/// Sends notification to the ServiceOutside
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/// </summary>
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/// <param name="notification">notification that should be sent to the outside service</param>
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public static void Notify(Notification notification)
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{
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try
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{
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KeyPair keyPair = Curve25519.GenerateKeyPair();
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EncryptedRequest encryptedRequest = new EncryptedRequest("Notification", notification, ServiceOutsideDeriveKey(keyPair));
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ServiceShared.Https.Request.PostWithoutResponse(ServiceOutsideURL, "serviceinside", "notification", encryptedRequest, keyPair);
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}
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catch (Exception ex)
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{
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Log.Critical(ex, "ServiceInside.Service.ServiceOutside", "Notify");
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}
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}
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/// <summary>
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/// Shared derive key from outside service over (exchange controller)
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/// </summary>
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/// <param name="keyPair">KeyPair from the InsideService</param>
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/// <returns></returns>
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private static byte[] ServiceOutsideDeriveKey(KeyPair keyPair)
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{
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byte[] result = null;
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try
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{
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PublicKey publicKey = ServiceShared.Https.Request.GetPublicKey(ServiceOutsideURL);
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if(publicKey != null && !string.IsNullOrEmpty(publicKey.key))
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{
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byte[] base64Encoded = Convert.FromBase64String(publicKey.key);
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result = keyPair.GetSharedKey(publicKey.key);
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}
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else
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{
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Log.Critical(new Exception("Could not get public key from the outside service"), "ServiceInside.Service.ServiceOutside", "ServiceOutsideDeriveKey");
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}
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}
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catch (Exception ex)
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{
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Log.Critical(ex, "ServiceInside.Service.ServiceOutside", "ServiceOutsideDeriveKey(KeyPair)");
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}
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return result;
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}
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}
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}
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