81 lines
No EOL
2.4 KiB
C#
81 lines
No EOL
2.4 KiB
C#
namespace lib;
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public enum RequestType
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{
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Register = 1,
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ConfirmRegister = 2,
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Login = 3,
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GetMessages = 4,
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GetUserKey = 5,
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SendMessage = 6,
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}
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public static class Request
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{
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public static byte[] CreateRequest(RequestType Type, ref byte counter, byte[] data)
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{
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if (data.Length > 13)
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{
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throw new Exception("extra data is too long: " + data.Length.ToString());
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}
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byte[] msg = new byte[16];
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msg[0] = 0; // version
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msg[1] = (byte)Type;
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msg[2] = counter;
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if (counter == byte.MaxValue)
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{
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counter = 0;
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}
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else
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{
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counter += 1;
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}
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// insert data 3..16
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Array.Copy(data, 0, msg, 3, data.Length);
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return msg;
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}
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public static string RequestToString(byte[] Request)
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{
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if (Request.Length != 16)
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{
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throw new Exception("Request size is not 128!");
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}
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string res = $"V: {Request[0]}, ";
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res += $"Request type: {(RequestType)Request[1]}, ";
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res += $"Counter: {Request[2]}\n";
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res += $"Extra: {string.Join(' ', Request[3..].Select(b => b.ToString("{b8}")))}";
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// also display extra data based on the request itself
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switch ((RequestType)Request[1])
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{
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case RequestType.Register:
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string phone = Utils.BytesToNumber(Request[3..11]);
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int rsaLen = BitConverter.ToInt32(Request, 11);
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res += $"Phone: {phone}, RSA Key length: {rsaLen}";
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break;
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case RequestType.ConfirmRegister:
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string code = string.Join(' ', Request[3..9]);
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int sigLen = BitConverter.ToInt32(Request, 9);
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res += $"Code: {code}, signature length: {sigLen}";
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break;
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case RequestType.Login:
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phone = Utils.BytesToNumber(Request[3..11]);
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sigLen = BitConverter.ToInt16(Request, 11);
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res += $"Phone: {phone}, signature length: {sigLen}";
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break;
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case RequestType.GetMessages:
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break;
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case RequestType.GetUserKey:
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break;
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case RequestType.SendMessage:
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break;
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default:
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res += "INVALID REQUEST TYPE";
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break;
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}
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return res;
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}
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} |