4d46e58865
The default guest group is critical and shouldn't be removed without either TShock doing something like automatically recreating it if it doesn't exist, or not having a huge problem if it doesn't exist. I chose to take the easiest path, preventing users from removing it. In theory the message gives enough context to imply "okay, go change the group now." This should be a relatively small edge case but I wanted to resolve it while I was here.
692 lines
22 KiB
C#
692 lines
22 KiB
C#
/*
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TShock, a server mod for Terraria
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Copyright (C) 2011-2019 Pryaxis & TShock Contributors
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Data;
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using System.Diagnostics;
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using System.Linq;
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using MySql.Data.MySqlClient;
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namespace TShockAPI.DB
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{
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/// <summary>
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/// Represents the GroupManager, which is in charge of group management.
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/// </summary>
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public class GroupManager : IEnumerable<Group>
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{
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private IDbConnection database;
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public readonly List<Group> groups = new List<Group>();
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/// <summary>
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/// Initializes a new instance of the <see cref="GroupManager"/> class with the specified database connection.
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/// </summary>
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/// <param name="db">The connection.</param>
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public GroupManager(IDbConnection db)
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{
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database = db;
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var table = new SqlTable("GroupList",
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new SqlColumn("GroupName", MySqlDbType.VarChar, 32) { Primary = true },
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new SqlColumn("Parent", MySqlDbType.VarChar, 32),
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new SqlColumn("Commands", MySqlDbType.Text),
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new SqlColumn("ChatColor", MySqlDbType.Text),
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new SqlColumn("Prefix", MySqlDbType.Text),
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new SqlColumn("Suffix", MySqlDbType.Text)
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);
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var creator = new SqlTableCreator(db,
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db.GetSqlType() == SqlType.Sqlite
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? (IQueryBuilder)new SqliteQueryCreator()
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: new MysqlQueryCreator());
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if (creator.EnsureTableStructure(table))
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{
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// Add default groups if they don't exist
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AddDefaultGroup("guest", "",
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string.Join(",",
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Permissions.canbuild,
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Permissions.canregister,
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Permissions.canlogin,
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Permissions.canpartychat,
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Permissions.cantalkinthird,
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Permissions.canchat,
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Permissions.synclocalarea,
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Permissions.sendemoji));
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AddDefaultGroup("default", "guest",
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string.Join(",",
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Permissions.warp,
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Permissions.canchangepassword,
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Permissions.canlogout,
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Permissions.summonboss,
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Permissions.whisper,
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Permissions.wormhole,
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Permissions.canpaint,
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Permissions.pylon,
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Permissions.tppotion,
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Permissions.magicconch,
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Permissions.demonconch));
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AddDefaultGroup("vip", "default",
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string.Join(",",
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Permissions.reservedslot,
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Permissions.renamenpc,
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Permissions.startinvasion,
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Permissions.summonboss,
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Permissions.whisper,
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Permissions.wormhole));
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AddDefaultGroup("newadmin", "vip",
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string.Join(",",
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Permissions.kick,
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Permissions.editspawn,
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Permissions.reservedslot,
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Permissions.annoy,
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Permissions.checkaccountinfo,
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Permissions.getpos,
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Permissions.mute,
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Permissions.rod,
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Permissions.savessc,
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Permissions.seeids,
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"tshock.world.time.*"));
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AddDefaultGroup("admin", "newadmin",
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string.Join(",",
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Permissions.ban,
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Permissions.whitelist,
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Permissions.spawnboss,
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Permissions.spawnmob,
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Permissions.managewarp,
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Permissions.time,
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Permissions.tp,
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Permissions.slap,
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Permissions.kill,
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Permissions.logs,
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Permissions.immunetokick,
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Permissions.tpothers,
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Permissions.advaccountinfo,
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Permissions.broadcast,
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Permissions.home,
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Permissions.tpallothers,
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Permissions.tpallow,
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Permissions.tpnpc,
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Permissions.tppos,
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Permissions.tpsilent,
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Permissions.userinfo,
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Permissions.spawn));
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AddDefaultGroup("trustedadmin", "admin",
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string.Join(",",
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Permissions.maintenance,
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"tshock.cfg.*",
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"tshock.world.*",
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Permissions.butcher,
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Permissions.item,
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Permissions.give,
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Permissions.heal,
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Permissions.immunetoban,
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Permissions.usebanneditem,
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Permissions.allowclientsideworldedit,
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Permissions.buff,
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Permissions.buffplayer,
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Permissions.clear,
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Permissions.clearangler,
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Permissions.godmode,
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Permissions.godmodeother,
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Permissions.ignoredamagecap,
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Permissions.ignorehp,
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Permissions.ignorekilltiledetection,
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Permissions.ignoreliquidsetdetection,
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Permissions.ignoremp,
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Permissions.ignorepaintdetection,
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Permissions.ignoreplacetiledetection,
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Permissions.ignoreprojectiledetection,
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Permissions.ignorestackhackdetection,
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Permissions.invade,
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Permissions.startdd2,
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Permissions.uploaddata,
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Permissions.uploadothersdata,
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Permissions.spawnpets,
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Permissions.journey_timefreeze,
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Permissions.journey_timeset,
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Permissions.journey_timespeed,
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Permissions.journey_godmode,
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Permissions.journey_windstrength,
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Permissions.journey_windfreeze,
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Permissions.journey_rainstrength,
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Permissions.journey_rainfreeze,
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Permissions.journey_placementrange,
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Permissions.journey_setdifficulty,
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Permissions.journey_biomespreadfreeze,
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Permissions.journey_setspawnrate,
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Permissions.journey_contributeresearch));
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AddDefaultGroup("owner", "trustedadmin",
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string.Join(",",
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Permissions.su,
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Permissions.allowdroppingbanneditems,
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Permissions.antibuild,
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Permissions.canusebannedprojectiles,
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Permissions.canusebannedtiles,
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Permissions.managegroup,
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Permissions.manageitem,
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Permissions.manageprojectile,
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Permissions.manageregion,
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Permissions.managetile,
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Permissions.maxspawns,
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Permissions.serverinfo,
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Permissions.settempgroup,
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Permissions.spawnrate,
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Permissions.tpoverride,
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Permissions.createdumps));
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}
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// Load Permissions from the DB
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LoadPermisions();
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Group.DefaultGroup = GetGroupByName(TShock.Config.Settings.DefaultGuestGroupName);
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}
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private void AddDefaultGroup(string name, string parent, string permissions)
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{
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if (!GroupExists(name))
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AddGroup(name, parent, permissions, Group.defaultChatColor);
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}
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/// <summary>
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/// Determines whether the given group exists.
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/// </summary>
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/// <param name="group">The group.</param>
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/// <returns><c>true</c> if it does; otherwise, <c>false</c>.</returns>
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public bool GroupExists(string group)
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{
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if (group == "superadmin")
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return true;
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return groups.Any(g => g.Name.Equals(group));
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}
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IEnumerator IEnumerable.GetEnumerator()
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{
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return GetEnumerator();
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}
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/// <summary>
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/// Gets the enumerator.
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/// </summary>
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/// <returns>The enumerator.</returns>
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public IEnumerator<Group> GetEnumerator()
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{
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return groups.GetEnumerator();
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}
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/// <summary>
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/// Gets the group matching the specified name.
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/// </summary>
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/// <param name="name">The name.</param>
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/// <returns>The group.</returns>
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public Group GetGroupByName(string name)
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{
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var ret = groups.Where(g => g.Name == name);
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return 1 == ret.Count() ? ret.ElementAt(0) : null;
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}
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/// <summary>
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/// Adds group with name and permissions if it does not exist.
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/// </summary>
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/// <param name="name">name of group</param>
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/// <param name="parentname">parent of group</param>
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/// <param name="permissions">permissions</param>
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/// <param name="chatcolor">chatcolor</param>
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public void AddGroup(String name, string parentname, String permissions, String chatcolor)
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{
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if (GroupExists(name))
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{
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throw new GroupExistsException(name);
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}
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var group = new Group(name, null, chatcolor);
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group.Permissions = permissions;
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if (!string.IsNullOrWhiteSpace(parentname))
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{
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var parent = groups.FirstOrDefault(gp => gp.Name == parentname);
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if (parent == null || name == parentname)
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{
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var error = "Invalid parent {0} for group {1}".SFormat(parentname, group.Name);
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TShock.Log.ConsoleError(error);
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throw new GroupManagerException(error);
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}
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group.Parent = parent;
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}
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string query = (TShock.Config.Settings.StorageType.ToLower() == "sqlite")
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? "INSERT OR IGNORE INTO GroupList (GroupName, Parent, Commands, ChatColor) VALUES (@0, @1, @2, @3);"
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: "INSERT IGNORE INTO GroupList SET GroupName=@0, Parent=@1, Commands=@2, ChatColor=@3";
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if (database.Query(query, name, parentname, permissions, chatcolor) == 1)
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{
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groups.Add(group);
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}
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else
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throw new GroupManagerException("Failed to add group '" + name + ".'");
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}
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/// <summary>
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/// Updates a group including permissions
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/// </summary>
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/// <param name="name">name of the group to update</param>
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/// <param name="parentname">parent of group</param>
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/// <param name="permissions">permissions</param>
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/// <param name="chatcolor">chatcolor</param>
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/// <param name="suffix">suffix</param>
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/// <param name="prefix">prefix</param> //why is suffix before prefix?!
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public void UpdateGroup(string name, string parentname, string permissions, string chatcolor, string suffix, string prefix)
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{
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Group group = GetGroupByName(name);
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if (group == null)
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throw new GroupNotExistException(name);
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Group parent = null;
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if (!string.IsNullOrWhiteSpace(parentname))
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{
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parent = GetGroupByName(parentname);
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if (parent == null || parent == group)
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throw new GroupManagerException("Invalid parent \"{0}\" for group \"{1}\".".SFormat(parentname, name));
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// Check if the new parent would cause loops.
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List<Group> groupChain = new List<Group> { group, parent };
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Group checkingGroup = parent.Parent;
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while (checkingGroup != null)
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{
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if (groupChain.Contains(checkingGroup))
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throw new GroupManagerException(
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string.Format("Invalid parent \"{0}\" for group \"{1}\" would cause loops in the parent chain.", parentname, name));
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groupChain.Add(checkingGroup);
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checkingGroup = checkingGroup.Parent;
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}
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}
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// Ensure any group validation is also persisted to the DB.
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var newGroup = new Group(name, parent, chatcolor, permissions);
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newGroup.Prefix = prefix;
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newGroup.Suffix = suffix;
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string query = "UPDATE GroupList SET Parent=@0, Commands=@1, ChatColor=@2, Suffix=@3, Prefix=@4 WHERE GroupName=@5";
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if (database.Query(query, parentname, newGroup.Permissions, newGroup.ChatColor, suffix, prefix, name) != 1)
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throw new GroupManagerException(string.Format("Failed to update group \"{0}\".", name));
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group.ChatColor = chatcolor;
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group.Permissions = permissions;
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group.Parent = parent;
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group.Prefix = prefix;
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group.Suffix = suffix;
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}
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/// <summary>
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/// Renames the specified group.
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/// </summary>
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/// <param name="name">The group's name.</param>
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/// <param name="newName">The new name.</param>
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/// <returns>The result from the operation to be sent back to the user.</returns>
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public String RenameGroup(string name, string newName)
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{
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if (!GroupExists(name))
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{
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throw new GroupNotExistException(name);
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}
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if (GroupExists(newName))
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{
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throw new GroupExistsException(newName);
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}
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using (var db = database.CloneEx())
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{
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db.Open();
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using (var transaction = db.BeginTransaction())
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{
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try
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{
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using (var command = db.CreateCommand())
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{
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command.CommandText = "UPDATE GroupList SET GroupName = @0 WHERE GroupName = @1";
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command.AddParameter("@0", newName);
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command.AddParameter("@1", name);
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command.ExecuteNonQuery();
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}
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var oldGroup = GetGroupByName(name);
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var newGroup = new Group(newName, oldGroup.Parent, oldGroup.ChatColor, oldGroup.Permissions)
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{
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Prefix = oldGroup.Prefix,
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Suffix = oldGroup.Suffix
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};
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groups.Remove(oldGroup);
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groups.Add(newGroup);
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// We need to check if the old group has been referenced as a parent and update those references accordingly
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using (var command = db.CreateCommand())
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{
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command.CommandText = "UPDATE GroupList SET Parent = @0 WHERE Parent = @1";
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command.AddParameter("@0", newName);
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command.AddParameter("@1", name);
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command.ExecuteNonQuery();
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}
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foreach (var group in groups.Where(g => g.Parent != null && g.Parent == oldGroup))
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{
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group.Parent = newGroup;
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}
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// Read the config file to prevent the possible loss of any unsaved changes
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TShock.Config.Read(FileTools.ConfigPath, out bool writeConfig);
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if (TShock.Config.Settings.DefaultGuestGroupName == oldGroup.Name)
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{
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TShock.Config.Settings.DefaultGuestGroupName = newGroup.Name;
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Group.DefaultGroup = newGroup;
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}
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if (TShock.Config.Settings.DefaultRegistrationGroupName == oldGroup.Name)
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{
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TShock.Config.Settings.DefaultRegistrationGroupName = newGroup.Name;
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}
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if (writeConfig)
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{
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TShock.Config.Write(FileTools.ConfigPath);
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}
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// We also need to check if any users belong to the old group and automatically apply changes
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using (var command = db.CreateCommand())
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{
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command.CommandText = "UPDATE Users SET Usergroup = @0 WHERE Usergroup = @1";
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command.AddParameter("@0", newName);
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command.AddParameter("@1", name);
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command.ExecuteNonQuery();
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}
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foreach (var player in TShock.Players.Where(p => p?.Group == oldGroup))
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{
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player.Group = newGroup;
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}
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transaction.Commit();
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return $"Group \"{name}\" has been renamed to \"{newName}\".";
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}
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catch (Exception ex)
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{
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TShock.Log.Error($"An exception has occured during database transaction: {ex.Message}");
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try
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{
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transaction.Rollback();
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}
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catch (Exception rollbackEx)
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{
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TShock.Log.Error($"An exception has occured during database rollback: {rollbackEx.Message}");
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}
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}
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}
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}
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throw new GroupManagerException($"Failed to rename group \"{name}\".");
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}
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/// <summary>
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/// Deletes the specified group.
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/// </summary>
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/// <param name="name">The group's name.</param>
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/// <param name="exceptions">Whether exceptions will be thrown in case something goes wrong.</param>
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/// <returns>The result from the operation to be sent back to the user.</returns>
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public String DeleteGroup(String name, bool exceptions = false)
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{
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if (!GroupExists(name))
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{
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if (exceptions)
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throw new GroupNotExistException(name);
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return "Error: Group doesn't exist.";
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}
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if (name == Group.DefaultGroup.Name)
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{
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if (exceptions)
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throw new GroupManagerException("Unable to remove default guest group.");
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return "Error: Unable to remove the default guest group.";
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}
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if (database.Query("DELETE FROM GroupList WHERE GroupName=@0", name) == 1)
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{
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groups.Remove(TShock.Groups.GetGroupByName(name));
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return "Group " + name + " has been deleted successfully.";
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}
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if (exceptions)
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throw new GroupManagerException("Failed to delete group '" + name + ".'");
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return "Failed to delete group '" + name + ".'";
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}
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/// <summary>
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/// Enumerates the given permission list and adds permissions for the specified group accordingly.
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/// </summary>
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/// <param name="name">The group name.</param>
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/// <param name="permissions">The permission list.</param>
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/// <returns>The result from the operation to be sent back to the user.</returns>
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public String AddPermissions(String name, List<String> permissions)
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{
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if (!GroupExists(name))
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return "Error: Group doesn't exist.";
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var group = TShock.Groups.GetGroupByName(name);
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var oldperms = group.Permissions; // Store old permissions in case of error
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permissions.ForEach(p => group.AddPermission(p));
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if (database.Query("UPDATE GroupList SET Commands=@0 WHERE GroupName=@1", group.Permissions, name) == 1)
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return "Group " + name + " has been modified successfully.";
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// Restore old permissions so DB and internal object are in a consistent state
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group.Permissions = oldperms;
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return "";
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}
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/// <summary>
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/// Enumerates the given permission list and removes valid permissions for the specified group accordingly.
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/// </summary>
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/// <param name="name">The group name.</param>
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/// <param name="permissions">The permission list.</param>
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/// <returns>The result from the operation to be sent back to the user.</returns>
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public String DeletePermissions(String name, List<String> permissions)
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{
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if (!GroupExists(name))
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return "Error: Group doesn't exist.";
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var group = TShock.Groups.GetGroupByName(name);
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var oldperms = group.Permissions; // Store old permissions in case of error
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permissions.ForEach(p => group.RemovePermission(p));
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if (database.Query("UPDATE GroupList SET Commands=@0 WHERE GroupName=@1", group.Permissions, name) == 1)
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|
return "Group " + name + " has been modified successfully.";
|
|
|
|
// Restore old permissions so DB and internal object are in a consistent state
|
|
group.Permissions = oldperms;
|
|
return "";
|
|
}
|
|
|
|
/// <summary>
|
|
/// Enumerates the group list and loads permissions for each group appropriately.
|
|
/// </summary>
|
|
public void LoadPermisions()
|
|
{
|
|
try
|
|
{
|
|
List<Group> newGroups = new List<Group>(groups.Count);
|
|
Dictionary<string, string> newGroupParents = new Dictionary<string, string>(groups.Count);
|
|
using (var reader = database.QueryReader("SELECT * FROM GroupList"))
|
|
{
|
|
while (reader.Read())
|
|
{
|
|
string groupName = reader.Get<string>("GroupName");
|
|
if (groupName == "superadmin")
|
|
{
|
|
TShock.Log.ConsoleInfo("WARNING: Group \"superadmin\" is defined in the database even though it's a reserved group name.");
|
|
continue;
|
|
}
|
|
|
|
newGroups.Add(new Group(groupName, null, reader.Get<string>("ChatColor"), reader.Get<string>("Commands"))
|
|
{
|
|
Prefix = reader.Get<string>("Prefix"),
|
|
Suffix = reader.Get<string>("Suffix"),
|
|
});
|
|
|
|
try
|
|
{
|
|
newGroupParents.Add(groupName, reader.Get<string>("Parent"));
|
|
}
|
|
catch (ArgumentException)
|
|
{
|
|
// Just in case somebody messed with the unique primary key.
|
|
TShock.Log.ConsoleError("ERROR: Group name \"{0}\" occurs more than once. Keeping current group settings.");
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
try
|
|
{
|
|
// Get rid of deleted groups.
|
|
for (int i = 0; i < groups.Count; i++)
|
|
if (newGroups.All(g => g.Name != groups[i].Name))
|
|
groups.RemoveAt(i--);
|
|
|
|
// Apply changed group settings while keeping the current instances and add new groups.
|
|
foreach (Group newGroup in newGroups)
|
|
{
|
|
Group currentGroup = groups.FirstOrDefault(g => g.Name == newGroup.Name);
|
|
if (currentGroup != null)
|
|
newGroup.AssignTo(currentGroup);
|
|
else
|
|
groups.Add(newGroup);
|
|
}
|
|
|
|
// Resolve parent groups.
|
|
Debug.Assert(newGroups.Count == newGroupParents.Count);
|
|
for (int i = 0; i < groups.Count; i++)
|
|
{
|
|
Group group = groups[i];
|
|
string parentGroupName;
|
|
if (!newGroupParents.TryGetValue(group.Name, out parentGroupName) || string.IsNullOrEmpty(parentGroupName))
|
|
continue;
|
|
|
|
group.Parent = groups.FirstOrDefault(g => g.Name == parentGroupName);
|
|
if (group.Parent == null)
|
|
{
|
|
TShock.Log.ConsoleError(
|
|
"ERROR: Group \"{0}\" is referencing non existent parent group \"{1}\", parent reference was removed.",
|
|
group.Name, parentGroupName);
|
|
}
|
|
else
|
|
{
|
|
if (group.Parent == group)
|
|
TShock.Log.ConsoleInfo(
|
|
"WARNING: Group \"{0}\" is referencing itself as parent group, parent reference was removed.", group.Name);
|
|
|
|
List<Group> groupChain = new List<Group> { group };
|
|
Group checkingGroup = group;
|
|
while (checkingGroup.Parent != null)
|
|
{
|
|
if (groupChain.Contains(checkingGroup.Parent))
|
|
{
|
|
TShock.Log.ConsoleError(
|
|
"ERROR: Group \"{0}\" is referencing parent group \"{1}\" which is already part of the parent chain. Parent reference removed.",
|
|
checkingGroup.Name, checkingGroup.Parent.Name);
|
|
|
|
checkingGroup.Parent = null;
|
|
break;
|
|
}
|
|
groupChain.Add(checkingGroup);
|
|
checkingGroup = checkingGroup.Parent;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
if (!groups.Any(g => g is SuperAdminGroup))
|
|
groups.Add(new SuperAdminGroup());
|
|
}
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
TShock.Log.ConsoleError("Error on reloading groups: " + ex);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Represents the base GroupManager exception.
|
|
/// </summary>
|
|
[Serializable]
|
|
public class GroupManagerException : Exception
|
|
{
|
|
/// <summary>
|
|
/// Initializes a new instance of the <see cref="GroupManagerException"/> with the specified message.
|
|
/// </summary>
|
|
/// <param name="message">The message.</param>
|
|
public GroupManagerException(string message)
|
|
: base(message)
|
|
{
|
|
}
|
|
|
|
/// <summary>
|
|
/// Initializes a new instance of the <see cref="GroupManagerException"/> with the specified message and inner exception.
|
|
/// </summary>
|
|
/// <param name="message">The message.</param>
|
|
/// <param name="inner">The inner exception.</param>
|
|
public GroupManagerException(string message, Exception inner)
|
|
: base(message, inner)
|
|
{
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Represents the GroupExists exception.
|
|
/// This exception is thrown whenever an attempt to add an existing group into the database is made.
|
|
/// </summary>
|
|
[Serializable]
|
|
public class GroupExistsException : GroupManagerException
|
|
{
|
|
/// <summary>
|
|
/// Initializes a new instance of the <see cref="GroupExistsException"/> with the specified group name.
|
|
/// </summary>
|
|
/// <param name="name">The group name.</param>
|
|
public GroupExistsException(string name)
|
|
: base("Group '" + name + "' already exists")
|
|
{
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Represents the GroupNotExist exception.
|
|
/// This exception is thrown whenever we try to access a group that does not exist.
|
|
/// </summary>
|
|
[Serializable]
|
|
public class GroupNotExistException : GroupManagerException
|
|
{
|
|
/// <summary>
|
|
/// Initializes a new instance of the <see cref="GroupNotExistException"/> with the specified group name.
|
|
/// </summary>
|
|
/// <param name="name">The group name.</param>
|
|
public GroupNotExistException(string name)
|
|
: base("Group '" + name + "' does not exist")
|
|
{
|
|
}
|
|
}
|
|
}
|