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106 lines
3.3 KiB
C#
106 lines
3.3 KiB
C#
using MediaBrowser.Common.Configuration;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Security.Cryptography;
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using System.Text;
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namespace MediaBrowser.Common.Implementations.Security
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{
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internal class MBLicenseFile
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{
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private readonly IApplicationPaths _appPaths;
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private readonly string _filename;
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public string RegKey
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{
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get { return _regKey; }
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set
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{
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if (value != _regKey)
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{
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//if key is changed - clear out our saved validations
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UpdateRecords.Clear();
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_regKey = value;
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}
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}
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}
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public string LegacyKey { get; set; }
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private Dictionary<Guid, DateTime> UpdateRecords { get; set; }
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private readonly object _lck = new object();
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private string _regKey;
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public MBLicenseFile(IApplicationPaths appPaths)
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{
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_appPaths = appPaths;
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_filename = Path.Combine(_appPaths.ConfigurationDirectoryPath, "mb.lic");
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UpdateRecords = new Dictionary<Guid, DateTime>();
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Load();
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}
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public void AddRegCheck(string featureId)
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{
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using (var provider = new MD5CryptoServiceProvider())
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{
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UpdateRecords[new Guid(provider.ComputeHash(Encoding.Unicode.GetBytes(featureId)))] = DateTime.UtcNow;
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Save();
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}
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}
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public DateTime LastChecked(string featureId)
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{
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using (var provider = new MD5CryptoServiceProvider())
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{
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DateTime last;
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lock(_lck) UpdateRecords.TryGetValue(new Guid(provider.ComputeHash(Encoding.Unicode.GetBytes(featureId))), out last);
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return last < DateTime.UtcNow ? last : DateTime.MinValue; // guard agains people just putting a large number in the file
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}
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}
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private void Load()
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{
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string[] contents = null;
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lock (_lck)
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{
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try
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{
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contents = File.ReadAllLines(_filename);
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}
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catch (FileNotFoundException)
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{
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(File.Create(_filename)).Close();
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}
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}
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if (contents != null && contents.Length > 0)
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{
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//first line is reg key
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RegKey = contents[0];
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//next is legacy key
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if (contents.Length > 1) LegacyKey = contents[1];
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//the rest of the lines should be pairs of features and timestamps
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for (var i = 2; i < contents.Length; i = i + 2)
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{
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var feat = Guid.Parse(contents[i]);
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UpdateRecords[feat] = new DateTime(Convert.ToInt64(contents[i + 1]));
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}
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}
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}
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public void Save()
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{
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//build our array
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var lines = new List<string> {RegKey, LegacyKey};
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foreach (var pair in UpdateRecords)
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{
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lines.Add(pair.Key.ToString());
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lines.Add(pair.Value.Ticks.ToString());
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}
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lock(_lck) File.WriteAllLines(_filename, lines);
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}
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}
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}
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