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Noikoio 2017-09-05 11:21:57 -07:00
commit c344db0c92
19 changed files with 1245 additions and 767 deletions
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15
BotFeature.cs
View file

@ -18,6 +18,7 @@ namespace Noikoio.RegexBot
private readonly AsyncLogger _logger;
public abstract string Name { get; }
protected DiscordSocketClient Client => _client;
protected BotFeature(DiscordSocketClient client)
{
@ -60,6 +61,20 @@ namespace Noikoio.RegexBot
if (sc.FeatureConfigs.TryGetValue(this, out var item)) return item;
else return null;
}
/// <summary>
/// Determines if the given message author or channel is in the server configuration's moderator list.
/// </summary>
protected bool IsModerator(ulong guildId, SocketMessage m)
{
var sc = RegexBot.Config.Servers.FirstOrDefault(g => g.Id == guildId);
if (sc == null)
{
throw new ArgumentException("There is no known configuration associated with the given Guild ID.");
}
return sc.Moderators.ExistsInList(m);
}
protected async Task Log(string text)
{

24
ConfigItem/EntityList.cs
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@ -7,8 +7,6 @@ using System.Linq;
namespace Noikoio.RegexBot.ConfigItem
{
enum FilterType { None, Whitelist, Blacklist }
/// <summary>
/// Represents a structure in bot configuration that contains a list of
/// channels, roles, and users.
@ -70,7 +68,7 @@ namespace Noikoio.RegexBot.ConfigItem
/// </summary>
/// <param name="msg">An incoming message.</param>
/// <returns>
/// True if the <see cref="SocketMessage"/> occurred within a channel specified in this list,
/// True if '<paramref name="msg"/>' occurred within a channel specified in this list,
/// or if the message author belongs to one or more roles in this list, or if the user itself
/// is defined within this list.
/// </returns>
@ -125,25 +123,5 @@ namespace Noikoio.RegexBot.ConfigItem
// No match.
return false;
}
/// <summary>
/// Helper method for reading whitelist and blacklist filtering lists
/// </summary>
public static (FilterType, EntityList) GetFilterList(JObject section)
{
var mode = FilterType.None;
EntityList list;
if (section["whitelist"] != null) mode = FilterType.Whitelist;
if (section["blacklist"] != null)
{
if (mode == FilterType.Whitelist)
throw new RuleImportException("Cannot have whitelist AND blacklist defined.");
mode = FilterType.Blacklist;
}
if (mode == FilterType.None) list = new EntityList(); // might even be fine to keep it null?
else list = new EntityList(section[mode == FilterType.Whitelist ? "whitelist" : "blacklist"]);
return (mode, list);
}
}
}

91
ConfigItem/FilterList.cs Normal file
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@ -0,0 +1,91 @@
using Discord.WebSocket;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Text;
namespace Noikoio.RegexBot.ConfigItem
{
enum FilterType { None, Whitelist, Blacklist }
/// <summary>
/// Represents whitelist/blacklist configuration, including exemptions.
/// </summary>
struct FilterList
{
FilterType _type;
EntityList _filterList;
EntityList _exemptions;
public FilterType FilterMode => _type;
public EntityList FilterEntities => _filterList;
public EntityList FilterExemptions => _exemptions;
/// <summary>
/// Gets the
/// </summary>
/// <param name="conf">
/// A JSON object which presumably contains an array named "whitelist" or "blacklist",
/// and optionally one named "exempt".
/// </param>
/// <exception cref="RuleImportException">
/// Thrown if both "whitelist" and "blacklist" definitions were found, if
/// "exempt" was found without a corresponding "whitelist" or "blacklist",
/// or if there was an issue parsing an EntityList within these definitions.
/// </exception>
public FilterList(JObject conf)
{
_type = FilterType.None;
if (conf["whitelist"] != null) _type = FilterType.Whitelist;
if (conf["blacklist"] != null)
{
if (_type != FilterType.None)
throw new RuleImportException("Cannot have both 'whitelist' and 'blacklist' values defined.");
_type = FilterType.Blacklist;
}
if (_type == FilterType.None)
{
_filterList = null;
_exemptions = null;
if (conf["exempt"] != null)
throw new RuleImportException("Cannot have 'exempt' defined if no corresponding " +
"'whitelist' or 'blacklist' has been defined in the same section.");
}
else
{
_filterList = new EntityList(conf[_type == FilterType.Whitelist ? "whitelist" : "blacklist"]);
_exemptions = new EntityList(conf["exempt"]); // EntityList constructor checks for null value
}
}
/// <summary>
/// Determines if the parameters of '<paramref name="msg"/>' are a match with filtering
/// rules defined in this instance.
/// </summary>
/// <param name="msg">An incoming message.</param>
/// <returns>
/// True if the user or channel specified by '<paramref name="msg"/>' is filtered by
/// the configuration defined in this instance.
/// </returns>
public bool IsFiltered(SocketMessage msg)
{
if (FilterMode == FilterType.None) return false;
bool inFilter = FilterEntities.ExistsInList(msg);
if (FilterMode == FilterType.Whitelist)
{
if (!inFilter) return true;
return FilterExemptions.ExistsInList(msg);
}
else if (FilterMode == FilterType.Blacklist)
{
if (!inFilter) return false;
return !FilterExemptions.ExistsInList(msg);
}
throw new Exception("this shouldn't happen");
}
}
}

96
Feature/AutoMod/AutoMod.cs Normal file
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@ -0,0 +1,96 @@
using Discord.WebSocket;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;
namespace Noikoio.RegexBot.Feature.AutoMod
{
/// <summary>
/// Implements per-message regex matching and executes customizable responses.
/// The name RegexBot comes from the existence of this feature.
/// </summary>
/// <remarks>
/// Strictly for use as a moderation tool only. Triggers that simply reply to messages
/// should be implemented using <see cref="AutoRespond"/>.
/// </remarks>
class AutoMod : BotFeature
{
public override string Name => "AutoMod";
public AutoMod(DiscordSocketClient client) : base(client)
{
client.MessageReceived += CMessageReceived;
client.MessageUpdated += CMessageUpdated;
}
[ConfigSection("automod")]
public override async Task<object> ProcessConfiguration(JToken configSection)
{
List<ConfigItem> rules = new List<ConfigItem>();
foreach (var def in configSection.Children<JProperty>())
{
string label = def.Name;
var rule = new ConfigItem(this, def);
rules.Add(rule);
}
if (rules.Count > 0)
await Log($"Loaded {rules.Count} rule(s) from configuration.");
return rules.AsReadOnly();
}
private async Task CMessageReceived(SocketMessage arg)
=> await ReceiveMessage(arg);
private async Task CMessageUpdated(Discord.Cacheable<Discord.IMessage, ulong> arg1, SocketMessage arg2, ISocketMessageChannel arg3)
=> await ReceiveMessage(arg2);
/// <summary>
/// Does initial message checking before sending to further processing.
/// </summary>
private async Task ReceiveMessage(SocketMessage m)
{
// Determine if incoming channel is in a guild
var ch = m.Channel as SocketGuildChannel;
if (ch == null) return;
// Get rules
var rules = GetConfig(ch.Guild.Id) as IEnumerable<ConfigItem>;
if (rules == null) return;
foreach (var rule in rules)
{
// Checking for mod bypass here (ConfigItem.Match isn't able to access mod list)
bool isMod = IsModerator(ch.Guild.Id, m);
await Task.Run(async () => await ProcessMessage(m, rule, isMod));
}
}
/// <summary>
/// Checks if the incoming message matches the given rule, and executes responses if necessary.
/// </summary>
private async Task ProcessMessage(SocketMessage m, ConfigItem r, bool isMod)
{
if (!r.Match(m, isMod)) return;
// TODO make log optional; configurable
await Log($"{r} triggered by {m.Author} in {((SocketGuildChannel)m.Channel).Guild.Name}/#{m.Channel.Name}");
foreach (ResponseBase resp in r.Response)
{
try
{
await resp.Invoke(m);
}
catch (Exception ex)
{
await Log($"Encountered an error while processing '{resp.CmdArg0}'. Details follow:");
await Log(ex.ToString());
}
}
}
public new Task Log(string text) => base.Log(text);
public new DiscordSocketClient Client => base.Client;
}
}

212
Feature/AutoMod/ConfigItem.cs Normal file
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@ -0,0 +1,212 @@
using Discord;
using Discord.WebSocket;
using Newtonsoft.Json.Linq;
using Noikoio.RegexBot.ConfigItem;
using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
namespace Noikoio.RegexBot.Feature.AutoMod
{
/// <summary>
/// Representation of a single AutoMod rule.
/// Data stored within cannot be edited.
/// </summary>
class ConfigItem
{
readonly AutoMod _instance;
readonly string _label;
readonly IEnumerable<Regex> _regex;
readonly ICollection<ResponseBase> _responses;
readonly FilterList _filter;
readonly int _msgMinLength;
readonly int _msgMaxLength;
readonly bool _modBypass;
readonly bool _embedMode;
public string Label => _label;
public IEnumerable<Regex> Regex => _regex;
public ICollection<ResponseBase> Response => _responses;
public FilterList Filter => _filter;
public (int?, int?) MatchLengthMinMaxLimit => (_msgMinLength, _msgMaxLength);
public bool AllowsModBypass => _modBypass;
public bool MatchEmbed => _embedMode;
public DiscordSocketClient Discord => _instance.Client;
public Func<string, Task> Logger => _instance.Log;
/// <summary>
/// Creates a new Rule instance to represent the given configuration.
/// </summary>
public ConfigItem(AutoMod instance, JProperty definition)
{
_instance = instance;
_label = definition.Name;
var ruleconf = (JObject)definition.Value;
// TODO validation. does the above line even throw an exception in the right cases?
// and what about the label? does it make for a good name?
string errpfx = $" in definition for rule '{_label}'.";
// regex options
RegexOptions opts = RegexOptions.Compiled | RegexOptions.CultureInvariant;
// TODO consider adding an option to specify Singleline and Multiline matching
opts |= RegexOptions.Singleline;
// case sensitivity must be explicitly defined, else not case sensitive by default
bool? regexci = ruleconf["ignorecase"]?.Value<bool>();
opts |= RegexOptions.IgnoreCase;
if (regexci.HasValue && regexci.Value == false)
opts &= ~RegexOptions.IgnoreCase;
// regex
const string NoRegexError = "No regular expression patterns are defined";
var regexes = new List<Regex>();
var rxconf = ruleconf["regex"];
if (rxconf == null) throw new RuleImportException(NoRegexError + errpfx);
if (rxconf.Type == JTokenType.Array)
{
foreach (var input in rxconf.Values<string>())
{
try
{
Regex r = new Regex(input, opts);
regexes.Add(r);
}
catch (ArgumentException)
{
throw new RuleImportException(
$"Failed to parse regular expression pattern '{input}'{errpfx}");
}
}
}
else
{
string rxstr = rxconf.Value<string>();
try
{
Regex r = new Regex(rxstr, opts);
regexes.Add(r);
}
catch (Exception ex) when (ex is ArgumentException || ex is NullReferenceException)
{
throw new RuleImportException(
$"Failed to parse regular expression pattern '{rxstr}'{errpfx}");
}
}
if (regexes.Count == 0)
{
throw new RuleImportException(NoRegexError + errpfx);
}
_regex = regexes.ToArray();
// min/max length
try
{
_msgMinLength = ruleconf["min"]?.Value<int>() ?? -1;
_msgMaxLength = ruleconf["max"]?.Value<int>() ?? -1;
}
catch (FormatException)
{
throw new RuleImportException("Minimum/maximum values must be an integer.");
}
// responses
const string NoResponseError = "No responses have been defined";
var responsestrs = new List<string>();
var rsconf = ruleconf["response"];
if (rsconf == null) throw new RuleImportException(NoResponseError + errpfx);
try
{
if (rsconf.Type == JTokenType.Array)
{
_responses = ResponseBase.ReadConfiguration(this, rsconf.Values<string>());
}
else
{
_responses = ResponseBase.ReadConfiguration(this, new string[] { rsconf.Value<string>() });
}
}
catch (RuleImportException ex)
{
throw new RuleImportException(ex.Message + errpfx);
}
// whitelist/blacklist filtering
_filter = new FilterList(ruleconf);
// moderator bypass toggle - true by default, must be explicitly set to false
bool? bypass = ruleconf["AllowModBypass"]?.Value<bool>();
_modBypass = bypass.HasValue ? bypass.Value : true;
// embed matching mode
bool? embed = ruleconf["MatchEmbeds"]?.Value<bool>();
_embedMode = (embed.HasValue && embed == true);
}
/// <summary>
/// Checks given message to see if it matches this rule's constraints.
/// </summary>
/// <returns>If true, the rule's response(s) should be executed.</returns>
public bool Match(SocketMessage m, bool isMod)
{
// Regular or embed mode?
string msgcontent;
if (MatchEmbed) msgcontent = SerializeEmbed(m.Embeds);
else msgcontent = m.Content;
// Min/max length check
if (_msgMinLength != -1 && msgcontent.Length <= _msgMinLength) return false;
if (_msgMaxLength != -1 && msgcontent.Length >= _msgMaxLength) return false;
// Filter check
if (Filter.IsFiltered(m)) return false;
// Mod bypass check
if (AllowsModBypass && isMod) return false;
// Finally, regex checks
foreach (var regex in Regex)
{
if (regex.IsMatch(msgcontent)) return true;
}
return false;
}
private string SerializeEmbed(IReadOnlyCollection<Embed> e)
{
var text = new StringBuilder();
foreach (var item in e) text.AppendLine(SerializeEmbed(item));
return text.ToString();
}
/// <summary>
/// Converts an embed to a plain string for easier matching.
/// </summary>
private string SerializeEmbed(Embed e)
{
StringBuilder result = new StringBuilder();
if (e.Author.HasValue) result.AppendLine(e.Author.Value.Name ?? "" + e.Author.Value.Url ?? "");
if (!string.IsNullOrWhiteSpace(e.Title)) result.AppendLine(e.Title);
if (!string.IsNullOrWhiteSpace(e.Description)) result.AppendLine(e.Description);
foreach (var f in e.Fields)
{
if (!string.IsNullOrWhiteSpace(f.Name)) result.AppendLine(f.Name);
if (!string.IsNullOrWhiteSpace(f.Value)) result.AppendLine(f.Value);
}
if (e.Footer.HasValue)
{
result.AppendLine(e.Footer.Value.Text ?? "");
}
return result.ToString();
}
public override string ToString() => $"Rule '{Label}'";
}
}

171
Feature/AutoMod/ResponseBase.cs Normal file
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@ -0,0 +1,171 @@
using Discord;
using Discord.WebSocket;
using Noikoio.RegexBot.ConfigItem;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics;
using System.Threading.Tasks;
namespace Noikoio.RegexBot.Feature.AutoMod
{
/// <summary>
/// Base class for all Response classes.
/// Contains helper methods for use by response code.
/// </summary>
[DebuggerDisplay("Response: {_cmdline}")]
abstract class ResponseBase
{
private readonly ConfigItem _rule;
private readonly string _cmdline;
protected ConfigItem Rule => _rule;
private DiscordSocketClient Client => _rule.Discord;
public string CmdLine => _cmdline;
public string CmdArg0 {
get {
int i = _cmdline.IndexOf(' ');
if (i != -1) return _cmdline.Substring(0, i);
return _cmdline;
}
}
/// <summary>
/// Deriving constructor should do validation of incoming <paramref name="cmdline"/>.
/// </summary>
public ResponseBase(ConfigItem rule, string cmdline)
{
_rule = rule;
_cmdline = cmdline;
}
public abstract Task Invoke(SocketMessage msg);
protected async Task Log(string text)
{
int dl = _cmdline.IndexOf(' ');
var prefix = _cmdline.Substring(0, dl);
await Rule.Logger(prefix + ": " + text);
}
#region Config loading
private static readonly ReadOnlyDictionary<string, Type> _commands =
new ReadOnlyDictionary<string, Type>(
new Dictionary<string, Type>(StringComparer.OrdinalIgnoreCase)
{
// Define all accepted commands and their corresponding types here
{ "ban", typeof(Responses.Ban) },
{ "kick", typeof(Responses.Kick) },
{ "say", typeof(Responses.Say) },
{ "send", typeof(Responses.Say) },
{ "delete", typeof(Responses.Remove) },
{ "remove", typeof(Responses.Remove) },
{ "report", typeof(Responses.Report) },
{ "addrole", typeof(Responses.RoleManipulation) },
{ "grantrole", typeof(Responses.RoleManipulation) },
{ "delrole", typeof(Responses.RoleManipulation) },
{ "removerole", typeof(Responses.RoleManipulation) },
{ "revokerole", typeof(Responses.RoleManipulation) }
});
public static ResponseBase[] ReadConfiguration(ConfigItem r, IEnumerable<string> responses)
{
var result = new List<ResponseBase>();
foreach (var line in responses)
{
if (string.IsNullOrWhiteSpace(line))
throw new RuleImportException("Empty response line");
int i = line.IndexOf(' ');
string basecmd;
if (i != -1) basecmd = line.Substring(0, i);
else basecmd = line;
Type rt;
if (!_commands.TryGetValue(basecmd, out rt))
throw new RuleImportException($"'{basecmd}' is not a valid response");
var newresponse = Activator.CreateInstance(rt, r, line) as ResponseBase;
if (newresponse == null)
throw new Exception("An unknown error occurred when attempting to create a new Response object.");
result.Add(newresponse);
}
return result.ToArray();
}
#endregion
#region Helper methods
/// <summary>
/// Receives a string (beginning with @ or #) and returns an object
/// suitable for sending out messages
/// </summary>
protected async Task<IMessageChannel> GetMessageTargetAsync(string targetName, SocketMessage m)
{
const string AEShort = "Target name is too short.";
EntityType et;
if (targetName.Length <= 1) throw new ArgumentException(AEShort);
if (targetName[0] == '#') et = EntityType.Channel;
else if (targetName[0] == '@') et = EntityType.User;
else throw new ArgumentException("Target is not specified to be either a channel or user.");
targetName = targetName.Substring(1);
if (targetName == "_")
{
if (et == EntityType.Channel) return m.Channel;
else return await m.Author.GetOrCreateDMChannelAsync();
}
EntityName ei = new EntityName(targetName, et);
SocketGuild g = ((SocketGuildUser)m.Author).Guild;
if (et == EntityType.Channel)
{
if (targetName.Length < 2 || targetName.Length > 100)
throw new ArgumentException(AEShort);
foreach (var ch in g.TextChannels)
{
if (ei.Id.HasValue)
{
if (ei.Id.Value == ch.Id) return ch;
}
else
{
if (string.Equals(ei.Name, ch.Name, StringComparison.OrdinalIgnoreCase)) return ch;
}
}
}
else
{
if (ei.Id.HasValue)
{
// The easy way
return await Client.GetUser(ei.Id.Value).GetOrCreateDMChannelAsync();
}
// The hard way
foreach (var u in g.Users)
{
if (string.Equals(ei.Name, u.Username, StringComparison.OrdinalIgnoreCase) ||
string.Equals(ei.Name, u.Nickname, StringComparison.OrdinalIgnoreCase))
{
return await u.GetOrCreateDMChannelAsync();
}
}
}
return null;
}
protected string ProcessText(string input, SocketMessage m)
{
// Maybe in the future this will do more.
// For now, replaces all instances of @_ with the message sender.
return input
.Replace("@_", m.Author.Mention)
.Replace("@\\_", "@_");
}
#endregion
}
}

50
Feature/AutoMod/Responses/Ban.cs Normal file
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@ -0,0 +1,50 @@
using Discord.WebSocket;
using Noikoio.RegexBot.ConfigItem;
using System;
using System.Threading.Tasks;
namespace Noikoio.RegexBot.Feature.AutoMod.Responses
{
/// <summary>
/// Bans the invoking user.
/// Parameters: ban [days = 0]
/// </summary>
class Ban : ResponseBase
{
readonly int _purgeDays;
public Ban(ConfigItem rule, string cmdline) : base(rule, cmdline)
{
var line = cmdline.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (line.Length == 1)
{
_purgeDays = 0;
}
else if (line.Length == 2)
{
if (int.TryParse(line[1], out _purgeDays))
{
if (_purgeDays < 0 || _purgeDays > 7)
{
throw new RuleImportException("Parameter must be an integer between 0 and 7.");
}
}
else
{
throw new RuleImportException("Parameter must be an integer between 0 and 7.");
}
}
else
{
throw new RuleImportException("Incorrect number of parameters.");
}
}
public override async Task Invoke(SocketMessage msg)
{
var target = (SocketGuildUser)msg.Author;
await target.Guild.AddBanAsync(target, _purgeDays, Uri.EscapeDataString($"Rule '{Rule.Label}'"));
// TODO remove string escaping when fixed in library
}
}
}

28
Feature/AutoMod/Responses/Kick.cs Normal file
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@ -0,0 +1,28 @@
using Discord.WebSocket;
using Noikoio.RegexBot.ConfigItem;
using System;
using System.Threading.Tasks;
namespace Noikoio.RegexBot.Feature.AutoMod.Responses
{
/// <summary>
/// Kicks the invoking user.
/// Takes no parameters.
/// </summary>
class Kick : ResponseBase
{
public Kick(ConfigItem rule, string cmdline) : base(rule, cmdline)
{
// Throw exception if extra parameters found
if (cmdline.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).Length > 1)
throw new RuleImportException("Incorrect number of parameters.");
}
public override async Task Invoke(SocketMessage msg)
{
var target = (SocketGuildUser)msg.Author;
await target.KickAsync(Uri.EscapeDataString($"Rule '{Rule.Label}'"));
// TODO remove string escaping when fixed in library
}
}
}

23
Feature/AutoMod/Responses/Remove.cs Normal file
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@ -0,0 +1,23 @@
using Discord.WebSocket;
using Noikoio.RegexBot.ConfigItem;
using System;
using System.Threading.Tasks;
namespace Noikoio.RegexBot.Feature.AutoMod.Responses
{
/// <summary>
/// Removes the invoking message.
/// Takes no parameters.
/// </summary>
class Remove : ResponseBase
{
public Remove(ConfigItem rule, string cmdline) : base(rule, cmdline)
{
// Throw exception if extra parameters found
if (cmdline.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).Length > 1)
throw new RuleImportException("Incorrect number of parameters.");
}
public override Task Invoke(SocketMessage msg) => msg.DeleteAsync();
}
}

93
Feature/AutoMod/Responses/Report.cs Normal file
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@ -0,0 +1,93 @@
using Discord;
using Discord.WebSocket;
using Noikoio.RegexBot.ConfigItem;
using System;
using System.Text;
using System.Threading.Tasks;
namespace Noikoio.RegexBot.Feature.AutoMod.Responses
{
/// <summary>
/// Sends a summary of the invoking message, along with information
/// about the rule making use of this command, to the given target.
/// Parameters: report (target)
/// </summary>
class Report : ResponseBase
{
readonly string _target;
public Report(ConfigItem rule, string cmdline) : base(rule, cmdline)
{
var line = cmdline.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (line.Length != 2) throw new RuleImportException("Incorrect number of parameters");
_target = line[1];
}
public override async Task Invoke(SocketMessage msg)
{
var target = await GetMessageTargetAsync(_target, msg);
if (target == null)
{
await Log("Error: Unable to resolve the given target.");
}
await target.SendMessageAsync("", embed: BuildReportEmbed(msg));
}
private EmbedBuilder BuildReportEmbed(SocketMessage msg)
{
string invokeLine = msg.Content;
var responsebody = new StringBuilder();
responsebody.AppendLine("```");
foreach (var item in Rule.Response)
{
responsebody.AppendLine(item.CmdLine.Replace("\r", "").Replace("\n", "\\n"));
}
responsebody.Append("```");
// Discord has a 2000 character limit per single message.
// Enforcing separate length limits on line and response.
const int DescriptionLengthMax = 1600;
const int ResponseBodyLengthMax = 200;
if (invokeLine.Length > DescriptionLengthMax)
{
invokeLine = $"**Message length too long; showing first {DescriptionLengthMax} characters.**\n\n"
+ invokeLine.Substring(0, DescriptionLengthMax);
}
if (responsebody.Length > ResponseBodyLengthMax)
{
responsebody = new StringBuilder("(Response body too large to display.)");
}
return new EmbedBuilder()
{
Color = new Color(0xEDCE00), // configurable later?
Author = new EmbedAuthorBuilder()
{
Name = $"{msg.Author.Username}#{msg.Author.Discriminator} said:",
IconUrl = msg.Author.GetAvatarUrl()
},
Description = invokeLine,
Footer = new EmbedFooterBuilder()
{
Text = $"Rule '{Rule.Label}'",
IconUrl = Rule.Discord.CurrentUser.GetAvatarUrl()
},
Timestamp = msg.EditedTimestamp ?? msg.Timestamp
}.AddField(new EmbedFieldBuilder()
{
Name = "Additional info",
Value = $"Username: {msg.Author.Mention}\n"
+ $"Channel: <#{msg.Channel.Id}> #{msg.Channel.Name} ({msg.Channel.Id})\n"
+ $"Message ID: {msg.Id}"
}).AddField(new EmbedFieldBuilder()
{
// TODO consider replacing with configurable note. this section is a bit too much
Name = "Executing response:",
Value = responsebody.ToString()
});
}
}
}

89
Feature/AutoMod/Responses/RoleManipulation.cs Normal file
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@ -0,0 +1,89 @@
using Discord.WebSocket;
using Noikoio.RegexBot.ConfigItem;
using System;
using System.Linq;
using System.Threading.Tasks;
namespace Noikoio.RegexBot.Feature.AutoMod.Responses
{
/// <summary>
/// Manipulates a given user's role.
/// Parameters: (command) (target) (role ID)
/// </summary>
class RoleManipulation : ResponseBase
{
enum ManipulationType { None, Add, Remove }
readonly ManipulationType _action;
readonly string _target;
readonly EntityName _role;
public RoleManipulation(ConfigItem rule, string cmdline) : base(rule, cmdline)
{
var line = cmdline.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (line.Length != 3)
throw new RuleImportException("Incorrect number of parameters.");
// Ensure the strings here match those in Response._commands
switch (line[0].ToLowerInvariant())
{
case "addrole":
case "grantrole":
_action = ManipulationType.Add;
break;
case "delrole":
case "removerole":
case "revokerole":
_action = ManipulationType.Remove;
break;
default:
_action = ManipulationType.None;
break;
}
if (_action == ManipulationType.None)
throw new RuleImportException("Command not defined. This is a bug.");
_target = line[1];
_role = new EntityName(line[2], EntityType.Role);
}
public override async Task Invoke(SocketMessage msg)
{
// Find role
SocketRole rtarget;
var g = ((SocketGuildUser)msg.Author).Guild;
if (_role.Id.HasValue) rtarget = g.GetRole(_role.Id.Value);
else rtarget = g.Roles.FirstOrDefault(r =>
string.Equals(r.Name, _role.Name, StringComparison.OrdinalIgnoreCase));
if (rtarget == null)
{
await Log("Error: Target role not found in server.");
return;
}
// Find user
SocketGuildUser utarget;
if (_target == "@_") utarget = (SocketGuildUser)msg.Author;
else
{
utarget = g.Users.FirstOrDefault(u =>
{
if (string.Equals(u.Nickname, _target, StringComparison.OrdinalIgnoreCase)) return true;
if (string.Equals(u.Username, _target, StringComparison.OrdinalIgnoreCase)) return true;
return false;
});
}
if (utarget == null)
{
await Log("Error: Target user not found in server.");
return;
}
// Do action
if (_action == ManipulationType.Add)
await utarget.AddRoleAsync(rtarget);
else if (_action == ManipulationType.Remove)
await utarget.RemoveRoleAsync(rtarget);
}
}
}

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using Discord.WebSocket;
using Noikoio.RegexBot.ConfigItem;
using System;
using System.Threading.Tasks;
namespace Noikoio.RegexBot.Feature.AutoMod.Responses
{
/// <summary>
/// Sends a message to the given target.
/// Parameters: say (target) (message)
/// </summary>
class Say : ResponseBase
{
private readonly string _target;
private readonly string _payload;
public Say(ConfigItem rule, string cmdline) : base(rule, cmdline)
{
var line = cmdline.Split(new char[] { ' ' }, 3, StringSplitOptions.RemoveEmptyEntries);
if (line.Length != 3) throw new RuleImportException("Incorrect number of parameters.");
// Very basic target verification. Could be improved?
if (line[1][0] != '@' && line[1][0] != '#')
throw new RuleImportException("The given target is not valid.");
_target = line[1];
_payload = line[2];
if (string.IsNullOrWhiteSpace(_payload))
throw new RuleImportException("Message parameter is blank or missing.");
}
public override async Task Invoke(SocketMessage msg)
{
// ＣＨＡＮＧＥ ＴＨＥ ＳＡＹ
string reply = ProcessText(_payload, msg);
var target = await GetMessageTargetAsync(_target, msg);
if (target == null)
{
await Log("Error: Unable to resolve the given target.");
}
await target.SendMessageAsync(reply);
}
}
}

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using Discord.WebSocket;
using Newtonsoft.Json.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Threading.Tasks;
namespace Noikoio.RegexBot.Feature.AutoRespond
{
/// <summary>
/// Similar to <see cref="AutoMod"/>, but lightweight.
/// Provides the capability to define autoresponses for fun or informational purposes.
/// <para>
/// The major differences between this and <see cref="AutoMod"/> include:
/// <list type="bullet">
/// <item><description>Does not listen for message edits.</description></item>
/// <item><description>Moderators are not exempt from any defined triggers.</description></item>
/// <item><description>Responses are limited to the invoking channel.</description></item>
/// <item><description>Per-channel rate limiting.</description></item>
/// </list>
/// </para>
/// </summary>
partial class AutoRespond : BotFeature
{
#region BotFeature implementation
public override string Name => "AutoRespond";
public AutoRespond(DiscordSocketClient client) : base(client)
{
client.MessageReceived += Client_MessageReceived;
}
private async Task Client_MessageReceived(SocketMessage arg)
{
// Determine channel type - if not a guild channel, stop.
var ch = arg.Channel as SocketGuildChannel;
if (ch == null) return;
// TODO either search server by name or remove server name support entirely
var defs = GetConfig(ch.Guild.Id) as IEnumerable<ConfigItem>;
if (defs == null) return;
foreach (var def in defs)
await Task.Run(async () => await ProcessMessage(arg, def));
}
[ConfigSection("autoresponses")]
public override async Task<object> ProcessConfiguration(JToken configSection)
{
var responses = new List<ConfigItem>();
foreach (var def in configSection.Children<JProperty>())
{
// All validation is left to the constructor
var resp = new ConfigItem(def);
responses.Add(resp);
}
if (responses.Count > 0)
await Log($"Loaded {responses.Count} definition(s) from configuration.");
return responses.AsReadOnly();
}
#endregion
private async Task ProcessMessage(SocketMessage msg, ConfigItem def)
{
if (!def.Match(msg)) return;
await Log($"'{def.Label}' triggered by {msg.Author} in {((SocketGuildChannel)msg.Channel).Guild.Name}/#{msg.Channel.Name}");
var (type, text) = def.Response;
if (type == ConfigItem.ResponseType.Reply) await ProcessReply(msg, text);
else if (type == ConfigItem.ResponseType.Exec) await ProcessExec(msg, text);
}
private async Task ProcessReply(SocketMessage msg, string text)
{
await msg.Channel.SendMessageAsync(text);
}
private async Task ProcessExec(SocketMessage msg, string text)
{
string[] cmdline = text.Split(new char[] { ' ' }, 2);
ProcessStartInfo ps = new ProcessStartInfo()
{
FileName = cmdline[0],
Arguments = (cmdline.Length == 2 ? cmdline[1] : ""),
UseShellExecute = false, // ???
CreateNoWindow = true,
RedirectStandardOutput = true
};
using (Process p = Process.Start(ps))
{
p.WaitForExit(5000); // waiting at most 5 seconds
if (p.HasExited)
{
if (p.ExitCode != 0) await Log("exec: Process returned exit code " + p.ExitCode);
using (var stdout = p.StandardOutput)
{
var result = await stdout.ReadToEndAsync();
await msg.Channel.SendMessageAsync(result);
}
}
else
{
await Log("exec: Process is taking too long to exit. Killing process.");
p.Kill();
return;
}
}
}
}
}

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using Discord.WebSocket;
using Newtonsoft.Json.Linq;
using Noikoio.RegexBot.ConfigItem;
using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;
namespace Noikoio.RegexBot.Feature.AutoRespond
{
/// <summary>
/// Represents a single autoresponse definition.
/// </summary>
class ConfigItem
{
public enum ResponseType { None, Exec, Reply }
string _label;
IEnumerable<Regex> _regex;
ResponseType _rtype;
string _rbody;
private FilterList _filter;
private RateLimitCache _limit;
public string Label => _label;
public IEnumerable<Regex> Regex => _regex;
public (ResponseType, string) Response => (_rtype, _rbody);
public FilterList Filter => _filter;
public RateLimitCache RateLimit => _limit;
public ConfigItem(JProperty definition)
{
_label = definition.Name;
var data = (JObject)definition.Value;
// error postfix string
string errorpfx = $" in response definition for '{_label}'.";
// regex trigger
const string NoRegexError = "No regular expression patterns are defined";
var regexes = new List<Regex>();
const RegexOptions rxopts = RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.Multiline;
var rxconf = data["regex"];
if (rxconf == null) throw new RuleImportException(NoRegexError + errorpfx);
if (rxconf.Type == JTokenType.Array)
{
foreach (var input in rxconf.Values<string>())
{
try
{
Regex r = new Regex(input, rxopts);
regexes.Add(r);
}
catch (ArgumentException)
{
throw new RuleImportException(
$"Failed to parse regular expression pattern '{input}'{errorpfx}");
}
}
}
else
{
string rxstr = rxconf.Value<string>();
try
{
Regex r = new Regex(rxstr, rxopts);
regexes.Add(r);
}
catch (Exception ex) when (ex is ArgumentException || ex is NullReferenceException)
{
throw new RuleImportException(
$"Failed to parse regular expression pattern '{rxstr}'{errorpfx}");
}
}
_regex = regexes.ToArray();
// response - defined in either "exec" or "reply", but not both
_rbody = null;
_rtype = ResponseType.None;
// exec response
string execstr = data["exec"]?.Value<string>();
if (!string.IsNullOrWhiteSpace(execstr))
{
_rbody = execstr;
_rtype = ResponseType.Exec;
}
// reply response
string replystr = data["reply"]?.Value<string>();
if (!string.IsNullOrWhiteSpace(replystr))
{
if (_rbody != null)
throw new RuleImportException("A value for both 'exec' and 'reply' is not allowed" + errorpfx);
_rbody = replystr;
_rtype = ResponseType.Reply;
}
if (_rbody == null)
throw new RuleImportException("A response value of either 'exec' or 'reply' was not defined" + errorpfx);
// ---
// whitelist/blacklist filtering
_filter = new FilterList(data);
// rate limiting
string rlstr = data["ratelimit"]?.Value<string>();
if (string.IsNullOrWhiteSpace(rlstr))
{
_limit = new RateLimitCache(RateLimitCache.DefaultTimeout);
}
else
{
if (ushort.TryParse(rlstr, out var rlval))
{
_limit = new RateLimitCache(rlval);
}
else
{
throw new RuleImportException("Rate limit value is invalid" + errorpfx);
}
}
}
/// <summary>
/// Checks given message to see if it matches this rule's constraints.
/// </summary>
/// <returns>If true, the rule's response(s) should be executed.</returns>
public bool Match(SocketMessage m)
{
// Filter check
if (Filter.IsFiltered(m)) return false;
// Match check
bool matchFound = false;
foreach (var item in Regex)
{
if (item.IsMatch(m.Content))
{
matchFound = true;
break;
}
}
if (!matchFound) return false;
// Rate limit check - currently per channel
if (!RateLimit.AllowUsage(m.Channel.Id)) return false;
return true;
}
public override string ToString() => $"Autoresponse definition '{Label}'";
}
}

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using System;
using System.Collections.Generic;
namespace Noikoio.RegexBot.Feature.AutoRespond
{
/// <summary>
/// Stores rate limit settings and caches.
/// </summary>
class RateLimitCache
{
public const ushort DefaultTimeout = 20; // this is Skeeter's fault
private readonly ushort _timeout;
private Dictionary<ulong, DateTime> _cache;
public ushort Timeout => _timeout;
/// <summary>
/// Sets up a new instance of <see cref="RateLimitCache"/>.
/// </summary>
public RateLimitCache(ushort timeout)
{
_timeout = timeout;
_cache = new Dictionary<ulong, DateTime>();
}
/// <summary>
/// Checks if a "usage" is allowed for the given value.
/// Items added to cache will be removed after the number of seconds specified in <see cref="Timeout"/>.
/// </summary>
/// <param name="id">The ID to add to the cache.</param>
/// <returns>True on success. False if the given ID already exists.</returns>
public bool AllowUsage(ulong id)
{
if (_timeout == 0) return true;
lock (this)
{
Clean();
if (_cache.ContainsKey(id)) return false;
_cache.Add(id, DateTime.Now);
}
return true;
}
private void Clean()
{
var now = DateTime.Now;
var clean = new Dictionary<ulong, DateTime>();
foreach (var kp in _cache)
{
if (kp.Value.AddSeconds(Timeout) > now)
{
// Copy items that have not yet timed out to the new dictionary
clean.Add(kp.Key, kp.Value);
}
}
_cache = clean;
}
}
}

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using Discord;
using Discord.WebSocket;
using Newtonsoft.Json.Linq;
using Noikoio.RegexBot.ConfigItem;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Text;
using System.Threading.Tasks;
namespace Noikoio.RegexBot.Feature.RegexResponder
{
/// <summary>
/// Implements per-message regex matching and executes customizable responses.
/// Namesake of this project.
/// </summary>
partial class EventProcessor : BotFeature
{
private readonly DiscordSocketClient _client;
public override string Name => "RegexResponder";
public EventProcessor(DiscordSocketClient client) : base(client)
{
_client = client;
_client.MessageReceived += OnMessageReceived;
_client.MessageUpdated += OnMessageUpdated;
_commands = new ReadOnlyDictionary<string, ResponseProcessor>(
new Dictionary<string, ResponseProcessor>() {
#if DEBUG
{ "crash", RP_Crash },
{ "dumpid", RP_DumpID },
#endif
{ "report", RP_Report },
{ "say", RP_Say },
{ "remove", RP_Remove },
{ "delete", RP_Remove },
{ "erase", RP_Remove },
{ "exec", RP_Exec },
{ "ban", RP_Ban },
{ "grantrole", RP_GrantRevokeRole },
{ "revokerole", RP_GrantRevokeRole }
}
);
}
#region Event handlers
private async Task OnMessageReceived(SocketMessage arg)
=> await ReceiveMessage(arg);
private async Task OnMessageUpdated(Cacheable<IMessage, ulong> arg1, SocketMessage arg2, ISocketMessageChannel arg3)
=> await ReceiveMessage(arg2);
#endregion
/// <summary>
/// Receives incoming messages and creates tasks to handle them if necessary.
/// </summary>
private async Task ReceiveMessage(SocketMessage arg)
{
// Determine channel type - if not a guild channel, stop.
var ch = arg.Channel as SocketGuildChannel;
if (ch == null) return;
if (arg.Author == _client.CurrentUser) return; // Don't ever self-trigger
// Looking up server information and extracting settings
SocketGuild g = ch.Guild;
ServerConfig sd = null;
foreach (var item in RegexBot.Config.Servers)
{
if (item.Id.HasValue)
{
// Finding server by ID
if (g.Id == item.Id)
{
sd = item;
break;
}
}
else
{
// Finding server by name and caching ID
if (string.Equals(item.Name, g.Name, StringComparison.OrdinalIgnoreCase))
{
item.Id = g.Id;
sd = item;
await Logger.GetLogger(Configuration.LogPrefix)
($"Suggestion: Server \"{item.Name}\" can be defined as \"{item.Id}::{item.Name}\"");
break;
}
}
}
if (sd == null) return; // No server configuration found
var rules = GetConfig(ch.Guild.Id) as IEnumerable<RuleConfig>;
if (rules == null) return;
// Further processing is sent to the thread pool
foreach (var rule in rules)
await Task.Run(async () => await ProcessMessage(sd, rule, arg));
}
/// <summary>
/// Uses information from a single rule and checks if the incoming message is a match.
/// If it matches, the rule's responses are executed. To be run in the thread pool.
/// </summary>
private async Task ProcessMessage(ServerConfig srv, RuleConfig rule, SocketMessage msg)
{
string msgcontent;
// Embed mode?
if (rule.MatchEmbeds)
{
var embeds = new StringBuilder();
foreach (var e in msg.Embeds) embeds.AppendLine(EmbedToString(e));
msgcontent = embeds.ToString();
}
else
{
msgcontent = msg.Content;
}
// Min/max message length check
if (rule.MinLength.HasValue && msgcontent.Length <= rule.MinLength.Value) return;
if (rule.MaxLength.HasValue && msgcontent.Length >= rule.MaxLength.Value) return;
// Moderator bypass check
if (rule.AllowModBypass == true && srv.Moderators.ExistsInList(msg)) return;
// Individual rule filtering check
if (IsFiltered(rule, msg)) return;
// And finally, pattern matching checks
bool success = false;
foreach (var regex in rule.Regex)
{
success = regex.Match(msgcontent).Success;
if (success) break;
}
if (!success) return;
// Prepare to execute responses
await Log($"\"{rule.DisplayName}\" triggered in {srv.Name}/#{msg.Channel} by {msg.Author.ToString()}");
foreach (string rcmd in rule.Responses)
{
string cmd = rcmd.TrimStart(' ').Split(' ')[0].ToLower();
try
{
ResponseProcessor response;
if (!_commands.TryGetValue(cmd, out response))
{
await Log($"Unknown command defined in response: \"{cmd}\"");
continue;
}
await response.Invoke(rcmd, rule, msg);
}
catch (Exception ex)
{
await Log($"Encountered an error while processing \"{cmd}\". Details follow:");
await Log(ex.ToString());
}
}
}
[ConfigSection("rules")]
public override async Task<object> ProcessConfiguration(JToken configSection)
{
List<RuleConfig> rules = new List<RuleConfig>();
foreach (JObject ruleconf in configSection)
{
// Try and get at least the name before passing it to RuleItem
string name = ruleconf["name"]?.Value<string>();
if (name == null)
{
await Log("Display name not defined within a rule section.");
return false;
}
await Log($"Adding rule \"{name}\"");
RuleConfig rule;
try
{
rule = new RuleConfig(ruleconf);
}
catch (RuleImportException ex)
{
await Log("-> Error: " + ex.Message);
return false;
}
rules.Add(rule);
}
return rules.AsReadOnly();
}
// -------------------------------------
/// <summary>
/// Turns an embed into a single string for regex matching purposes
/// </summary>
private string EmbedToString(Embed e)
{
StringBuilder result = new StringBuilder();
if (e.Author.HasValue) result.AppendLine(e.Author.Value.Name ?? "" + e.Author.Value.Url ?? "");
if (!string.IsNullOrWhiteSpace(e.Title)) result.AppendLine(e.Title);
if (!string.IsNullOrWhiteSpace(e.Description)) result.AppendLine(e.Description);
foreach (var f in e.Fields)
{
if (!string.IsNullOrWhiteSpace(f.Name)) result.AppendLine(f.Name);
if (!string.IsNullOrWhiteSpace(f.Value)) result.AppendLine(f.Value);
}
if (e.Footer.HasValue)
{
result.AppendLine(e.Footer.Value.Text ?? "");
}
return result.ToString();
}
private bool IsFiltered(RuleConfig r, SocketMessage m)
{
if (r.FilterMode == FilterType.None) return false;
bool inFilter = r.FilterList.ExistsInList(m);
if (r.FilterMode == FilterType.Whitelist)
{
if (!inFilter) return true;
return r.FilterExemptions.ExistsInList(m);
}
else if (r.FilterMode == FilterType.Blacklist)
{
if (!inFilter) return false;
return !r.FilterExemptions.ExistsInList(m);
}
return false; // this shouldn't happen™
}
private string[] SplitParams(string cmd, int? limit = null)
{
if (limit.HasValue)
{
return cmd.Split(new char[] { ' ' }, limit.Value, StringSplitOptions.RemoveEmptyEntries);
}
else
{
return cmd.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
}
}
private string ProcessText(string input, SocketMessage m)
{
// Maybe in the future this will do more.
// For now, replaces all instances of @_ with the message sender.
return input
.Replace("@_", m.Author.Mention)
.Replace("@\\_", "@_");
}
/// <summary>
/// Receives a string (beginning with @ or #) and returns an object
/// suitable for sending out messages
/// </summary>
private async Task<IMessageChannel> GetMessageTargetAsync(string targetName, SocketMessage m)
{
const string AEShort = "Target name is too short.";
EntityType et;
if (targetName.Length <= 1) throw new ArgumentException(AEShort);
if (targetName[0] == '#') et = EntityType.Channel;
else if (targetName[0] == '@') et = EntityType.User;
else throw new ArgumentException("Target is not specified to be either a channel or user.");
targetName = targetName.Substring(1);
if (targetName == "_")
{
if (et == EntityType.Channel) return m.Channel;
else return await m.Author.GetOrCreateDMChannelAsync();
}
EntityName ei = new EntityName(targetName, et);
SocketGuild g = ((SocketGuildUser)m.Author).Guild;
if (et == EntityType.Channel)
{
if (targetName.Length < 2 || targetName.Length > 100)
throw new ArgumentException(AEShort);
foreach (var ch in g.TextChannels)
{
if (ei.Id.HasValue)
{
if (ei.Id.Value == ch.Id) return ch;
}
else
{
if (string.Equals(ei.Name, ch.Name, StringComparison.OrdinalIgnoreCase)) return ch;
}
}
}
else
{
if (ei.Id.HasValue)
{
// The easy way
return await _client.GetUser(ei.Id.Value).GetOrCreateDMChannelAsync();
}
// The hard way
foreach (var u in g.Users)
{
if (string.Equals(ei.Name, u.Username, StringComparison.OrdinalIgnoreCase) ||
string.Equals(ei.Name, u.Nickname, StringComparison.OrdinalIgnoreCase))
{
return await u.GetOrCreateDMChannelAsync();
}
}
}
return null;
}
}
}

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using Discord;
using Discord.WebSocket;
using System;
using System.Collections.ObjectModel;
using System.Diagnostics;
using System.Text;
using System.Threading.Tasks;
namespace Noikoio.RegexBot.Feature.RegexResponder
{
// Contains code for handling each response in a rule.
partial class EventProcessor
{
private delegate Task ResponseProcessor(string cmd, RuleConfig r, SocketMessage m);
private readonly ReadOnlyDictionary<string, ResponseProcessor> _commands;
#if DEBUG
/// <summary>
/// Throws an exception. Meant to be a quick error handling test.
/// No parameters.
/// </summary>
private Task RP_Crash(string cmd, RuleConfig r, SocketMessage m)
{
throw new Exception("Requested in response.");
}
/// <summary>
/// Prints all guild values (IDs for users, channels, roles) to console.
/// The guild info displayed is the one in which the command is invoked.
/// No parameters.
/// </summary>
private Task RP_DumpID(string cmd, RuleConfig r, SocketMessage m)
{
var g = ((SocketGuildUser)m.Author).Guild;
var result = new StringBuilder();
result.AppendLine("Users:");
foreach (var item in g.Users)
result.AppendLine($"{item.Id} {item.Username}#{item.Discriminator}");
result.AppendLine();
result.AppendLine("Channels:");
foreach (var item in g.Channels) result.AppendLine($"{item.Id} #{item.Name}");
result.AppendLine();
result.AppendLine("Roles:");
foreach (var item in g.Roles) result.AppendLine($"{item.Id} {item.Name}");
result.AppendLine();
Console.WriteLine(result.ToString());
return Task.CompletedTask;
}
#endif
/// <summary>
/// Sends a message to a specified channel.
/// Parameters: say (channel) (message)
/// </summary>
private async Task RP_Say(string cmd, RuleConfig r, SocketMessage m)
{
string[] @in = SplitParams(cmd, 3);
if (@in.Length != 3)
{
await Log("Error: say: Incorrect number of parameters.");
return;
}
var target = await GetMessageTargetAsync(@in[1], m);
if (target == null)
{
await Log("Error: say: Unable to resolve given target.");
return;
}
// ＣＨＡＮＧＥ ＴＨＥ ＳＡＹ
@in[2] = ProcessText(@in[2], m);
await target.SendMessageAsync(@in[2]);
}
/// <summary>
/// Reports the incoming message to a given channel.
/// Parameters: report (channel)
/// </summary>
private async Task RP_Report(string cmd, RuleConfig r, SocketMessage m)
{
string[] @in = SplitParams(cmd);
if (@in.Length != 2)
{
await Log("Error: report: Incorrect number of parameters.");
return;
}
var target = await GetMessageTargetAsync(@in[1], m);
if (target == null)
{
await Log("Error: report: Unable to resolve given target.");
return;
}
var responsefield = new StringBuilder();
responsefield.AppendLine("```");
foreach (var line in r.Responses)
responsefield.AppendLine(line.Replace("\r", "").Replace("\n", "\\n"));
responsefield.Append("```");
await target.SendMessageAsync("", embed: new EmbedBuilder()
{
Color = new Color(0xEDCE00), // configurable later?
Author = new EmbedAuthorBuilder()
{
Name = $"{m.Author.Username}#{m.Author.Discriminator} said:",
IconUrl = m.Author.GetAvatarUrl()
},
Description = m.Content,
Footer = new EmbedFooterBuilder()
{
Text = $"Rule '{r.DisplayName}'",
IconUrl = _client.CurrentUser.GetAvatarUrl()
},
Timestamp = m.Timestamp
}.AddField(new EmbedFieldBuilder()
{
Name = "Additional info",
Value = $"Channel: <#{m.Channel.Id}>\n" // NOTE: manually mentioning channel here
+ $"Username: {m.Author.Mention}\n"
+ $"Message ID: {m.Id}"
}).AddField(new EmbedFieldBuilder()
{
Name = "Executing response:",
Value = responsefield.ToString()
}));
}
/// <summary>
/// Deletes the incoming message.
/// No parameters.
/// </summary>
private async Task RP_Remove(string cmd, RuleConfig r, SocketMessage m)
{
// Parameters are not checked
await m.DeleteAsync();
}
/// <summary>
/// Executes an external program and sends standard output to the given channel.
/// Parameters: exec (channel) (command line)
/// </summary>
private async Task RP_Exec(string cmd, RuleConfig r, SocketMessage m)
{
var @in = SplitParams(cmd, 4);
if (@in.Length < 3)
{
await Log("exec: Incorrect number of parameters.");
}
string result;
var target = await GetMessageTargetAsync(@in[1], m);
if (target == null)
{
await Log("Error: exec: Unable to resolve given channel.");
return;
}
ProcessStartInfo ps = new ProcessStartInfo()
{
FileName = @in[2],
Arguments = (@in.Length > 3 ? @in[3] : ""),
UseShellExecute = false,
RedirectStandardOutput = true
};
using (Process p = Process.Start(ps))
{
p.WaitForExit(5000); // waiting at most 5 seconds
if (p.HasExited)
{
if (p.ExitCode != 0) await Log("exec: Process returned exit code " + p.ExitCode);
using (var stdout = p.StandardOutput)
{
result = await stdout.ReadToEndAsync();
}
}
else
{
await Log("exec: Process is taking too long to exit. Killing process.");
p.Kill();
return;
}
}
result = ProcessText(result.Trim(), m);
await target.SendMessageAsync(result);
}
/// <summary>
/// Bans the sender of the incoming message.
/// No parameters.
/// </summary>
// TODO add parameter for message auto-deleting
private async Task RP_Ban(string cmd, RuleConfig r, SocketMessage m)
{
SocketGuild g = ((SocketGuildUser)m.Author).Guild;
await g.AddBanAsync(m.Author);
}
/// <summary>
/// Grants or revokes a specified role to/from a given user.
/// Parameters: grantrole/revokerole (user ID or @_) (role ID)
/// </summary>
private async Task RP_GrantRevokeRole(string cmd, RuleConfig r, SocketMessage m)
{
string[] @in = SplitParams(cmd);
if (@in.Length != 3)
{
await Log($"Error: {@in[0]}: incorrect number of parameters.");
return;
}
if (!ulong.TryParse(@in[2], out var roleID))
{
await Log($"Error: {@in[0]}: Invalid role ID specified.");
return;
}
// Finding role
var gu = (SocketGuildUser)m.Author;
SocketRole rl = gu.Guild.GetRole(roleID);
if (rl == null)
{
await Log($"Error: {@in[0]}: Specified role not found.");
return;
}
// Finding user
SocketGuildUser target;
if (@in[1] == "@_")
{
target = gu;
}
else
{
if (!ulong.TryParse(@in[1], out var userID))
{
await Log($"Error: {@in[0]}: Invalid user ID specified.");
return;
}
target = gu.Guild.GetUser(userID);
if (target == null)
{
await Log($"Error: {@in[0]}: Given user ID does not exist in this server.");
return;
}
}
if (@in[0].ToLower() == "grantrole")
{
await target.AddRoleAsync(rl);
}
else
{
await target.RemoveRoleAsync(rl);
}
}
}
}

147
Feature/RegexResponder/RuleConfig.cs
View file

@ -1,147 +0,0 @@
using Newtonsoft.Json.Linq;
using Noikoio.RegexBot.ConfigItem;
using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;
namespace Noikoio.RegexBot.Feature.RegexResponder
{
/// <summary>
/// Represents configuration for a single rule.
/// </summary>
[System.Diagnostics.DebuggerDisplay("Rule: {DisplayName}")]
internal struct RuleConfig
{
private string _displayName;
private IEnumerable<Regex> _regex;
private IEnumerable<string> _responses;
private FilterType _filtermode;
private EntityList _filterlist;
private EntityList _filterexempt;
private int? _minLength;
private int? _maxLength;
private bool _modBypass;
private bool _matchEmbeds;
public string DisplayName => _displayName;
public IEnumerable<Regex> Regex => _regex;
public IEnumerable<string> Responses => _responses;
public FilterType FilterMode => _filtermode;
public EntityList FilterList => _filterlist;
public EntityList FilterExemptions => _filterexempt;
public int? MinLength => _minLength;
public int? MaxLength => _maxLength;
public bool AllowModBypass => _modBypass;
public bool MatchEmbeds => _matchEmbeds;
/// <summary>
/// Takes the JObject for a single rule and retrieves all data for use as a struct.
/// </summary>
/// <param name="ruleconf">Rule configuration input</param>
/// <exception cref="RuleImportException>">
/// Thrown when encountering a missing or invalid value.
/// </exception>
public RuleConfig(JObject ruleconf)
{
// display name - validation should've been done outside this constructor already
_displayName = ruleconf["name"]?.Value<string>();
if (_displayName == null)
throw new RuleImportException("Display name not defined.");
// regex options
RegexOptions opts = RegexOptions.Compiled | RegexOptions.CultureInvariant;
// TODO consider adding an option to specify Singleline and Multiline matching
opts |= RegexOptions.Singleline;
// case sensitivity must be explicitly defined, else not case sensitive by default
bool? regexci = ruleconf["ignorecase"]?.Value<bool>();
opts |= RegexOptions.IgnoreCase;
if (regexci.HasValue && regexci.Value == false)
opts &= ~RegexOptions.IgnoreCase;
// regex
const string RegexError = "No regular expression patterns are defined.";
var regexes = new List<Regex>();
var rxconf = ruleconf["regex"];
if (rxconf == null)
{
throw new RuleImportException(RegexError);
}
if (rxconf.Type == JTokenType.Array)
{
foreach (var input in rxconf.Values<string>())
{
try
{
Regex r = new Regex(input, opts);
regexes.Add(r);
}
catch (ArgumentException)
{
throw new RuleImportException("Failed to parse regular expression pattern: " + input);
}
}
}
else
{
string rxstr = rxconf.Value<string>();
try
{
var rxx = new Regex(rxstr, opts);
regexes.Add(rxx);
}
catch (ArgumentException)
{
throw new RuleImportException("Failed to parse regular expression pattern: " + rxstr);
}
}
if (regexes.Count == 0)
{
throw new RuleImportException(RegexError);
}
_regex = regexes.ToArray();
// min/max length
try
{
_minLength = ruleconf["min"]?.Value<int>();
_maxLength = ruleconf["max"]?.Value<int>();
}
catch (FormatException)
{
throw new RuleImportException("Minimum/maximum values must be an integer.");
}
// responses
const string ResponseError = "No responses have been defined for this rule.";
var responses = new List<string>();
var rsconf = ruleconf["response"];
if (rsconf == null)
{
throw new RuleImportException(ResponseError);
}
if (rsconf.Type == JTokenType.Array)
{
foreach (var input in rsconf.Values<string>()) responses.Add(input);
}
else
{
responses.Add(rsconf.Value<string>());
}
// TODO a bit of response validation here. at least check for blanks or something.
_responses = responses.ToArray();
// (white|black)list filtering
(_filtermode, _filterlist) = EntityList.GetFilterList(ruleconf);
// filtering exemptions
_filterexempt = new EntityList(ruleconf["exempt"]);
// moderator bypass toggle - true by default, must be explicitly set to false
bool? modoverride = ruleconf["AllowModBypass"]?.Value<bool>();
_modBypass = modoverride.HasValue ? modoverride.Value : true;
// embed matching mode
bool? embedmode = ruleconf["MatchEmbeds"]?.Value<bool>();
_matchEmbeds = (embedmode.HasValue && embedmode == true);
}
}
}

8
RegexBot.cs
View file

@ -44,8 +44,9 @@ namespace Noikoio.RegexBot
// Initialize features
_features = new BotFeature[]
{
new Feature.RegexResponder.EventProcessor(_client),
new Feature.ModTools.CommandListener(_client)
new Feature.AutoMod.AutoMod(_client),
new Feature.ModTools.CommandListener(_client),
new Feature.AutoRespond.AutoRespond(_client)
};
var dlog = Logger.GetLogger("Discord.Net");
_client.Log += async (arg) =>
@ -54,7 +55,8 @@ namespace Noikoio.RegexBot
arg.Message));
// With features initialized, finish loading configuration
if (!_config.ReloadServerConfig().GetAwaiter().GetResult())
var conf = _config.ReloadServerConfig().Result;
if (conf == false)
{
Console.WriteLine("Failed to load server configuration.");
#if DEBUG