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Utility classes and methods developed for Brooklyn but not dependendent on Brooklyn or much else
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.brooklyn.util.ssh;
import static org.apache.brooklyn.util.ssh.BashCommands.alternatives;
import static org.apache.brooklyn.util.ssh.BashCommands.chain;
import static org.apache.brooklyn.util.ssh.BashCommands.installPackage;
import static org.apache.brooklyn.util.ssh.BashCommands.sudo;
import com.google.common.annotations.Beta;
import com.google.common.base.Optional;
public class IptablesCommands {
public enum Chain {
INPUT, FORWARD, OUTPUT
}
public enum Policy {
ACCEPT, REJECT, DROP, LOG
}
/**
* @deprecated since 0.7; use {@link org.apache.brooklyn.util.net.Protocol}; kept for persisted state backwards compatibility.
*/
@Deprecated
public enum Protocol {
TCP("tcp"), UDP("udp"), ALL("all");
final String protocol;
private Protocol(String protocol) {
this.protocol = protocol;
}
@Override
public String toString() {
return protocol;
}
org.apache.brooklyn.util.net.Protocol convert() {
switch (this) {
case TCP: return org.apache.brooklyn.util.net.Protocol.TCP;
case UDP: return org.apache.brooklyn.util.net.Protocol.UDP;
case ALL: return org.apache.brooklyn.util.net.Protocol.ALL;
default: throw new IllegalStateException("Unexpected protocol "+this);
}
}
}
@Beta // implementation not portable across distros
public static String iptablesService(String cmd) {
return sudo(alternatives(
BashCommands.ifExecutableElse1("service", "service iptables " + cmd),
"/sbin/service iptables " + cmd));
}
@Beta // implementation not portable across distros
public static String iptablesServiceStop() {
return iptablesService("stop");
}
@Beta // implementation not portable across distros
public static String iptablesServiceStart() {
return iptablesService("start");
}
@Beta // implementation not portable across distros
public static String iptablesServiceRestart() {
return iptablesService("restart");
}
@Beta // implementation not portable across distros
public static String iptablesServiceStatus() {
return iptablesService("status");
}
@Beta // implementation not portable across distros
public static String firewalldService(String cmd) {
return sudo(alternatives(
BashCommands.ifExecutableElse1("systemctl", "systemctl " + cmd + " firewalld"),
"/usr/bin/systemctl " + cmd + " firewalld"));
}
@Beta // implementation not portable across distros
public static String firewalldServiceStop() {
return firewalldService("stop");
}
@Beta // implementation not portable across distros
public static String firewalldServiceStart() {
return firewalldService("start");
}
@Beta // implementation not portable across distros
public static String firewalldServiceRestart() {
return firewalldService("restart");
}
@Beta // implementation not portable across distros
public static String firewalldServiceStatus() {
return firewalldService("status");
}
@Beta // implementation not portable across distros
public static String firewalldServiceIsActive() {
return firewalldService("is-active");
}
/**
* Returns the command that saves iptables rules on file.
*
* @return Returns the command that saves iptables rules on file.
*
*/
public static String saveIptablesRules() {
return alternatives(sudo("service iptables save"),
chain(installPackage("iptables-persistent"), sudo("/etc/init.d/iptables-persistent save")));
}
/**
* Returns the command that cleans up iptables rules.
*
* @return Returns the command that cleans up iptables rules.
*/
public static String cleanUpIptablesRules() {
return sudo("/sbin/iptables -F");
}
/**
* Returns the iptables rules.
*
* @return Returns the command that list all the iptables rules.
*/
public static String listIptablesRule() {
return sudo("/sbin/iptables -L -v -n");
}
/**
* Returns the command that inserts a rule on top of the iptables' rules to all interfaces.
*
* @return Returns the command that inserts a rule on top of the iptables'
* rules.
*/
public static String insertIptablesRule(Chain chain, org.apache.brooklyn.util.net.Protocol protocol, int port, Policy policy) {
return addIptablesRule("-I", chain, Optional. absent(), protocol, port, policy);
}
/**
* Returns the command that inserts a rule on top of the iptables' rules.
*
* @return Returns the command that inserts a rule on top of the iptables'
* rules.
*/
public static String insertIptablesRule(Chain chain, String networkInterface, org.apache.brooklyn.util.net.Protocol protocol, int port, Policy policy) {
return addIptablesRule("-I", chain, Optional.of(networkInterface), protocol, port, policy);
}
/**
* Returns the command that appends a rule to iptables to all interfaces.
*
* @return Returns the command that appends a rule to iptables.
*/
public static String appendIptablesRule(Chain chain, org.apache.brooklyn.util.net.Protocol protocol, int port, Policy policy) {
return addIptablesRule("-A", chain, Optional. absent(), protocol, port, policy);
}
/**
* Returns the command that appends a rule to iptables.
*
* @return Returns the command that appends a rule to iptables.
*/
public static String appendIptablesRule(Chain chain, String networkInterface, org.apache.brooklyn.util.net.Protocol protocol, int port, Policy policy) {
return addIptablesRule("-A", chain, Optional.of(networkInterface), protocol, port, policy);
}
/**
* Returns the command that creates a rule to iptables.
*
* @return Returns the command that creates a rule for iptables.
*/
public static String addIptablesRule(String direction, Chain chain, Optional networkInterface, org.apache.brooklyn.util.net.Protocol protocol, int port, Policy policy) {
String addIptablesRule;
if(networkInterface.isPresent()) {
addIptablesRule = String.format("/sbin/iptables %s %s -i %s -p %s --dport %d -j %s", direction, chain, networkInterface.get(), protocol, port, policy);
} else {
addIptablesRule = String.format("/sbin/iptables %s %s -p %s --dport %d -j %s", direction, chain, protocol, port, policy);
}
return sudo(addIptablesRule);
}
/**
* Returns the command that adds firewalld direct rule.
*
* @return Returns the command that adds firewalld direct rule.
*/
public static String addFirewalldRule(Chain chain, org.apache.brooklyn.util.net.Protocol protocol, int port, Policy policy) {
return addFirewalldRule(chain, Optional.absent(), protocol, port, policy);
}
/**
* Returns the command that adds firewalld direct rule.
*
* @return Returns the command that adds firewalld direct rule.
*/
public static String addFirewalldRule(Chain chain, Optional networkInterface, org.apache.brooklyn.util.net.Protocol protocol, int port, Policy policy) {
String command = new String("/usr/bin/firewall-cmd");
String commandPermanent = new String("/usr/bin/firewall-cmd --permanent");
String interfaceParameter = String.format("%s", networkInterface.isPresent() ? " -i " + networkInterface.get() : "");
String commandParameters = String.format(" --direct --add-rule ipv4 filter %s 0 %s -p %s --dport %d -j %s",
chain, interfaceParameter, protocol, port, policy);
return sudo(chain(command + commandParameters, commandPermanent + commandParameters));
}
}