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| 1 | +using System.Net; |
| 2 | +using Impostor.Api.Data; |
| 3 | +using Impostor.Api.Extension.Utils; |
| 4 | +using Microsoft.Extensions.Logging; |
| 5 | + |
| 6 | +namespace Impostor.Api.Extension.Commands; |
| 7 | + |
| 8 | +public class BanIpContent(ILogger<BanIpContent> logger) : IContent |
| 9 | +{ |
| 10 | + public string Name => "BanIp"; |
| 11 | + public bool Enable => true; |
| 12 | + |
| 13 | + public class BanIpInfo(IPAddress ip, DateTime startTime, DateTime endTime) |
| 14 | + { |
| 15 | + public IPAddress IP { get; set; } = ip; |
| 16 | + public DateTime StartTime { get; set; } = startTime; |
| 17 | + public DateTime EndTime { get; set; } = endTime; |
| 18 | + } |
| 19 | + |
| 20 | + |
| 21 | + public List<BanIpInfo> _banIps = []; |
| 22 | + public Task<string> SerialiseAsync() |
| 23 | + { |
| 24 | + return Task.FromResult(JsonUtils.Serialize(_banIps)); |
| 25 | + } |
| 26 | + |
| 27 | + public Task BanIpAsync(IPAddress address, TimeSpan span) |
| 28 | + { |
| 29 | + if (_banIps.Any(ban => ban.IP.Equals(address))) |
| 30 | + { |
| 31 | + logger.LogWarning("Ip {0} 已被 Ban", address); |
| 32 | + return Task.CompletedTask; |
| 33 | + } |
| 34 | + |
| 35 | + var start = DateTime.Now; |
| 36 | + var end = start.Add(span); |
| 37 | + _banIps.Add(new BanIpInfo(address, start, end)); |
| 38 | + logger.LogInformation("Ban Ip {ip} {span} 从 {start} 到 {end}", address, span, start, end); |
| 39 | + return Task.CompletedTask; |
| 40 | + } |
| 41 | + |
| 42 | + public bool IsBan(string ip) => CheckIsBan(IPAddress.Parse(ip)); |
| 43 | + |
| 44 | + public void UnBan(string ip) => UnBan(IPAddress.Parse(ip)); |
| 45 | + |
| 46 | + public void UnBan(IPAddress ip) |
| 47 | + { |
| 48 | + var info = _banIps.FirstOrDefault(ban => ban.IP.Equals(ip)); |
| 49 | + if (info == null) |
| 50 | + { |
| 51 | + return; |
| 52 | + } |
| 53 | + |
| 54 | + _banIps.Remove(info); |
| 55 | + logger.LogInformation("UnBan Ip {ip}", ip); |
| 56 | + } |
| 57 | + |
| 58 | + public bool CheckIsBan(IPAddress ip) |
| 59 | + { |
| 60 | + var info = _banIps.FirstOrDefault(ban => ban.IP.Equals(ip)); |
| 61 | + if (info == null) |
| 62 | + { |
| 63 | + return false; |
| 64 | + } |
| 65 | + |
| 66 | + if (info.EndTime < DateTime.Now) |
| 67 | + { |
| 68 | + _banIps.Remove(info); |
| 69 | + return false; |
| 70 | + } |
| 71 | + |
| 72 | + return true; |
| 73 | + } |
| 74 | + |
| 75 | + public Task DeserializeAsync(string data) |
| 76 | + { |
| 77 | + var json = JsonUtils.Deserialize<List<BanIpInfo>>(data); |
| 78 | + if (json == null) |
| 79 | + { |
| 80 | + return Task.CompletedTask; |
| 81 | + } |
| 82 | + |
| 83 | + _banIps = json; |
| 84 | + return Task.CompletedTask; |
| 85 | + } |
| 86 | +} |
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