add subnet ban command

IW4MAdmin.sln

@@ -51,6 +51,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "ScriptPlugins", "ScriptPlug
 		Plugins\ScriptPlugins\ParserCSGOSM.js = Plugins\ScriptPlugins\ParserCSGOSM.js
 		Plugins\ScriptPlugins\ParserPlutoniumT4COZM.js = Plugins\ScriptPlugins\ParserPlutoniumT4COZM.js
 		Plugins\ScriptPlugins\GameInterface.js = Plugins\ScriptPlugins\GameInterface.js
+		Plugins\ScriptPlugins\SubnetBan.js = Plugins\ScriptPlugins\SubnetBan.js
 	EndProjectSection
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AutomessageFeed", "Plugins\AutomessageFeed\AutomessageFeed.csproj", "{F5815359-CFC7-44B4-9A3B-C04BACAD5836}"

Plugins/ScriptPlugins/SubnetBan.js

@@ -0,0 +1,114 @@
+const cidrRegex = /^([0-9]{1,3}\.){3}[0-9]{1,3}(\/([0-9]|[1-2][0-9]|3[0-2]))?$/;
+const validCIDR = input => cidrRegex.test(input);
+
+const commands = [{
+    name: "bansubnet",
+    description: "bans an IPv4 subnet",
+    alias: "bs",
+    permission: "SeniorAdmin",
+    targetRequired: false,
+    arguments: [{
+        name: "subnet in IPv4 CIDR notation",
+        required: true
+    }],
+
+    execute: (gameEvent) => {
+        const input = String(gameEvent.Data).trim();
+
+        if (!validCIDR(input)) {
+            gameEvent.Origin.Tell('Invalid CIDR input');
+            return;
+        }
+
+        plugin.subnetList.push(input);
+        _configHandler.SetValue('SubnetBanList', plugin.subnetList);
+
+        gameEvent.Origin.Tell(`Added ${input} to subnet banlist`);
+    }
+}];
+
+convertIPtoLong = ip => {
+    let components = String(ip).match(/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/);
+    if (components) {
+        let ipLong = 0;
+        let power = 1;
+        for (let i = 4; i >= 1; i -= 1) {
+            ipLong += power * parseInt(components[i]);
+            power *= 256;
+        }
+        return ipLong;
+    } else {
+        return -1;
+    }
+};
+
+isInSubnet = (ip, subnet) => {
+    const mask = subnet.match(/^(.*?)\/(\d{1,2})$/);
+
+    if (!mask) {
+        return false;
+    }
+
+    const baseIP = convertIPtoLong(mask[1]);
+    const longIP = convertIPtoLong(ip);
+
+    if (mask && baseIP >= 0) {
+        const freedom = Math.pow(2, 32 - parseInt(mask[2]));
+        return (longIP > baseIP) && (longIP < baseIP + freedom - 1);
+    } else return false;
+};
+
+isSubnetBanned = (ip, list) => {
+    const matchingSubnets = list.filter(subnet => isInSubnet(ip, subnet, logger));
+    return matchingSubnets.length !== 0;
+}
+
+const plugin = {
+    author: 'RaidMax',
+    version: 1.0,
+    name: 'Subnet Banlist Plugin',
+    manager: null,
+    logger: null,
+    banMessage: '',
+
+    onEventAsync: (gameEvent, server) => {
+        if (gameEvent.TypeName === 'Join') {
+            if (!isSubnetBanned(gameEvent.Origin.IPAddressString, this.subnetList, this.logger)) {
+                return;
+            }
+
+            this.logger.WriteInfo(`Kicking ${gameEvent.Origin} because they are subnet banned.`);
+            gameEvent.Origin.Kick(this.banMessage, _IW4MAdminClient);
+        }
+    },
+    onLoadAsync: manager => {
+        this.manager = manager;
+        this.logger = manager.GetLogger(0);
+        this.configHandler = _configHandler;
+        this.subnetList = [];
+
+        const list = this.configHandler.GetValue('SubnetBanList');
+        if (list !== undefined) {
+            list.forEach(element => {
+                const ban = String(element);
+                this.subnetList.push(ban)
+            });
+            this.logger.WriteInfo(`Loaded ${list.length} banned subnets`);
+        } else {
+            this.configHandler.SetValue('SubnetBanList', []);
+        }
+
+        this.banMessage = this.configHandler.GetValue('BanMessage');
+
+        if (this.banMessage === undefined) {
+            this.banMessage = 'You are not allowed to join this server.';
+            this.configHandler.SetValue('BanMessage', this.banMessage);
+        }
+    },
+
+    onUnloadAsync: () => {
+    },
+
+    onTickAsync: server => {
+    }
+};

Plugins/ScriptPlugins/VPNDetection.js

@@ -5,7 +5,7 @@ const commands = [{
     permission: "SeniorAdmin",
     targetRequired: true,
     arguments: [{
-        name: "players",
+        name: "player",
         required: true
     }],
     execute: (gameEvent) => {