/*
* JBoss, Home of Professional Open Source.
* Copyright 2017, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.wildfly.extension.undertow;
import java.net.InetAddress;
import java.net.URI;
import java.net.URISyntaxException;
import io.undertow.server.HttpHandler;
import io.undertow.server.HttpServerExchange;
import io.undertow.server.handlers.RedirectHandler;
import io.undertow.util.Headers;
import org.jboss.as.network.NetworkInterfaceBinding;
import org.jboss.as.server.mgmt.domain.HttpManagement;
import org.jboss.msc.service.Service;
import org.jboss.msc.service.StartContext;
import org.jboss.msc.service.StartException;
import org.jboss.msc.service.StopContext;
import org.jboss.msc.value.InjectedValue;
import org.wildfly.extension.undertow.logging.UndertowLogger;
/**
* A service to setup a redirect for the web administration console.
*
* @author <a href="mailto:jperkins@redhat.com">James R. Perkins</a>
*/
class ConsoleRedirectService implements Service<ConsoleRedirectService> {
private static final String CONSOLE_PATH = "/console";
private static final String NO_CONSOLE = "/noconsole.html";
private static final String NO_REDIRECT = "/noredirect.html";
private final InjectedValue<HttpManagement> httpManagementInjector = new InjectedValue<>();
private final InjectedValue<Host> hostInjector = new InjectedValue<>();
@Override
public void start(final StartContext startContext) throws StartException {
final Host host = hostInjector.getValue();
UndertowLogger.ROOT_LOGGER.debugf("Starting console redirect for %s", host.getName());
final HttpManagement httpManagement = httpManagementInjector.getOptionalValue();
if (httpManagement != null) {
if (httpManagement.hasConsole()) {
host.registerHandler(CONSOLE_PATH, new ConsoleRedirectHandler(httpManagement));
} else {
host.registerHandler(CONSOLE_PATH, new RedirectHandler(NO_CONSOLE));
}
} else {
host.registerHandler(CONSOLE_PATH, new RedirectHandler(NO_CONSOLE));
}
}
@Override
public void stop(final StopContext stopContext) {
final Host host = hostInjector.getValue();
UndertowLogger.ROOT_LOGGER.debugf("Stopping console redirect for %s", host.getName());
host.unregisterHandler(CONSOLE_PATH);
}
@Override
public ConsoleRedirectService getValue() throws IllegalStateException, IllegalArgumentException {
return this;
}
protected InjectedValue<HttpManagement> getHttpManagementInjector() {
return httpManagementInjector;
}
protected InjectedValue<Host> getHostInjector() {
return hostInjector;
}
private static class ConsoleRedirectHandler implements HttpHandler {
private static final int DEFAULT_PORT = 80;
private static final String HTTP = "http";
private static final String HTTPS = "https";
private static final int SECURE_DEFAULT_PORT = 443;
private final int port;
private final int securePort;
private final NetworkInterfaceBinding networkInterfaceBinding;
private final NetworkInterfaceBinding secureNetworkInterfaceBinding;
ConsoleRedirectHandler(final HttpManagement httpManagement) {
port = httpManagement.getHttpPort();
securePort = httpManagement.getHttpsPort();
networkInterfaceBinding = httpManagement.getHttpNetworkInterfaceBinding();
secureNetworkInterfaceBinding = httpManagement.getHttpsNetworkInterfaceBinding();
}
@Override
public void handleRequest(final HttpServerExchange exchange) throws Exception {
String location = NO_REDIRECT;
// Both ports should likely never be less than 0, but should result in a NO_REDIRECT if they are
if (port > -1 || securePort > -1) {
try {
// Use secure port if available by default
if (securePort > -1) {
location = assembleURI(HTTPS, secureNetworkInterfaceBinding, securePort, SECURE_DEFAULT_PORT, exchange);
} else {
location = assembleURI(HTTP, networkInterfaceBinding, port, DEFAULT_PORT, exchange);
}
} catch (URISyntaxException e) {
UndertowLogger.ROOT_LOGGER.invalidRedirectURI(e);
}
}
// Use a new redirect each time as different clients could be requesting the console with different host names
final RedirectHandler redirectHandler = new RedirectHandler(location);
redirectHandler.handleRequest(exchange);
}
private String assembleURI(final String scheme, final NetworkInterfaceBinding interfaceBinding, final int port, final int defaultPort, final HttpServerExchange exchange)
throws URISyntaxException {
final int p = (port != defaultPort ? port : -1);
final String hostname = getRedirectHostname(interfaceBinding.getAddress(), exchange);
if (hostname == null) {
return NO_REDIRECT;
}
return new URI(scheme, null, hostname, p, CONSOLE_PATH, null, null).toString();
}
private String getRedirectHostname(final InetAddress managementAddress, final HttpServerExchange exchange) {
final InetAddress destinationAddress = exchange.getDestinationAddress().getAddress();
// If hosts are equal use the host from the header
if (managementAddress.equals(destinationAddress) || managementAddress.isAnyLocalAddress()) {
String hostname = exchange.getRequestHeaders().getFirst(Headers.HOST);
if (hostname != null) {
// Remove the port if it exists
final int portPos = hostname.indexOf(':');
if (portPos > 0) {
hostname = hostname.substring(0, portPos);
}
return hostname;
}
}
// Host names don't match, use the IP address of the management host if both are loopback
if (managementAddress.isLoopbackAddress() && destinationAddress.isLoopbackAddress()) {
String hostname = managementAddress.getHostAddress();
final int zonePos = hostname.indexOf('%');
if (zonePos > 0) {
// Remove the zone identifier
hostname = hostname.substring(0, zonePos);
}
return hostname;
}
// Nothing matched, don't expose the management IP
return null;
}
}
}