Samuele E. Locatelli
90 lines
3.6 KiB
C#
90 lines
3.6 KiB
C#
using System;
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namespace SteamWare
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{
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/// <summary>
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/// gestione licenze applicativi
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/// </summary>
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public class licenseMan
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{
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/// <summary>
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/// numero di licenze attive per cliente/applicativo
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/// </summary>
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/// <param name="cliente"></param>
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/// <param name="applicativo"></param>
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/// <returns></returns>
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public static int getLicenseNum(string cliente, string applicativo)
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{
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// !!!FARE!!! chiamata a webservice 1/mese
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int answ = 1;
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// molto hard-coded e discutibile... licenze "perenni"
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switch (cliente)
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{
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case "SteamWare":
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answ = 4;
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break;
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case "ETS":
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if (applicativo == "GPW")
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{
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answ = 35;
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}
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break;
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case "SPS":
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if (applicativo == "GPW")
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{
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answ = 11;
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}
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break;
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default:
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answ = 1;
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break;
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}
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return answ;
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}
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/// <summary>
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/// Fornisce chiave MD5 x un cliente/applicativo/expiryDate
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/// </summary>
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/// <param name="cliente"></param>
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/// <param name="applicativo"></param>
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/// <param name="licenze"></param>
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/// <param name="expiryDate"></param>
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/// <returns></returns>
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public static string getAuthKey(string cliente, string applicativo, int licenze, DateTime expiryDate)
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{
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string answ = "";
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// algoritmo MD5 formato cliente#applicativo#expDate, via SQLdiventa
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// SELECT CONVERT(VARCHAR(32), HashBytes('MD5', 'ETS#GPW#2013/12/31'), 2)
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string plainAuthKey = string.Format("{0}#{1}-{2}%{3}%", cliente, applicativo.PadLeft(20, '-'), expiryDate.ToString("yyyy/MM/dd"), licenze);
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string passPhrase = string.Format("{0}|{1}", cliente.PadLeft(50, ':'), applicativo);
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answ = SteamCrypto.EncryptString(plainAuthKey, passPhrase); // uso combinazione cliente+applicativo come passphrase!
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return answ;
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}
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/// <summary>
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/// restituisce data decodificata da authKey + applicazione + cliente...
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/// </summary>
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/// <param name="cliente">The cliente.</param>
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/// <param name="applicativo">The applicativo.</param>
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/// <param name="licenze">The licenze.</param>
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/// <param name="authKey">The authentication key.</param>
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/// <returns></returns>
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public static DateTime expiryDateByAuthKey(string cliente, string applicativo, int licenze, string authKey)
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{
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DateTime answ = DateTime.Today.AddYears(-10);
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string plainAuthKey = "";
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try
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{
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string passPhrase = string.Format("{0}|{1}", cliente.PadLeft(50, ':'), applicativo);
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plainAuthKey = SteamCrypto.DecryptString(authKey, passPhrase); // uso combinazione cliente+applicativo come passphrase!
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answ = Convert.ToDateTime(plainAuthKey.Replace(string.Format("{0}#{1}-", cliente, applicativo.PadLeft(20, '-')), "").Replace(string.Format("%{0}%", licenze), ""));
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}
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catch (Exception exc)
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{
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logger.lg.scriviLog(string.Format("Errore decodifica auth key:{0}AuthKey: {1}{0}cliente:{2}{0}applicativo:{3}{0}errore:{4}", Environment.NewLine, authKey, cliente, applicativo, exc), tipoLog.EXCEPTION);
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}
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return answ;
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}
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}
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}
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