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Liferay Document Library Opener OneDrive Web
/*
* Copyright (C) 2016 Square, Inc.
*
* Licensed 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 okhttp3.internal.platform;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.List;
import javax.annotation.Nullable;
import javax.net.ssl.SSLSocket;
import okhttp3.Protocol;
import okhttp3.internal.Util;
import static okhttp3.internal.Util.assertionError;
/**
* OpenJDK 7 or OpenJDK 8 with {@code org.mortbay.jetty.alpn/alpn-boot} in the boot class path.
*/
class JdkWithJettyBootPlatform extends Platform {
private final Method putMethod;
private final Method getMethod;
private final Method removeMethod;
private final Class clientProviderClass;
private final Class serverProviderClass;
JdkWithJettyBootPlatform(Method putMethod, Method getMethod, Method removeMethod,
Class clientProviderClass, Class serverProviderClass) {
this.putMethod = putMethod;
this.getMethod = getMethod;
this.removeMethod = removeMethod;
this.clientProviderClass = clientProviderClass;
this.serverProviderClass = serverProviderClass;
}
@Override public void configureTlsExtensions(
SSLSocket sslSocket, String hostname, List protocols) {
List names = alpnProtocolNames(protocols);
try {
Object provider = Proxy.newProxyInstance(Platform.class.getClassLoader(),
new Class[] {clientProviderClass, serverProviderClass}, new JettyNegoProvider(names));
putMethod.invoke(null, sslSocket, provider);
} catch (InvocationTargetException | IllegalAccessException e) {
throw assertionError("unable to set alpn", e);
}
}
@Override public void afterHandshake(SSLSocket sslSocket) {
try {
removeMethod.invoke(null, sslSocket);
} catch (IllegalAccessException | InvocationTargetException e) {
throw assertionError("unable to remove alpn", e);
}
}
@Override public @Nullable String getSelectedProtocol(SSLSocket socket) {
try {
JettyNegoProvider provider =
(JettyNegoProvider) Proxy.getInvocationHandler(getMethod.invoke(null, socket));
if (!provider.unsupported && provider.selected == null) {
Platform.get().log(INFO, "ALPN callback dropped: HTTP/2 is disabled. "
+ "Is alpn-boot on the boot class path?", null);
return null;
}
return provider.unsupported ? null : provider.selected;
} catch (InvocationTargetException | IllegalAccessException e) {
throw assertionError("unable to get selected protocol", e);
}
}
public static Platform buildIfSupported() {
// Find Jetty's ALPN extension for OpenJDK.
try {
String negoClassName = "org.eclipse.jetty.alpn.ALPN";
Class negoClass = Class.forName(negoClassName);
Class providerClass = Class.forName(negoClassName + "$Provider");
Class clientProviderClass = Class.forName(negoClassName + "$ClientProvider");
Class serverProviderClass = Class.forName(negoClassName + "$ServerProvider");
Method putMethod = negoClass.getMethod("put", SSLSocket.class, providerClass);
Method getMethod = negoClass.getMethod("get", SSLSocket.class);
Method removeMethod = negoClass.getMethod("remove", SSLSocket.class);
return new JdkWithJettyBootPlatform(
putMethod, getMethod, removeMethod, clientProviderClass, serverProviderClass);
} catch (ClassNotFoundException | NoSuchMethodException ignored) {
}
return null;
}
/**
* Handle the methods of ALPN's ClientProvider and ServerProvider without a compile-time
* dependency on those interfaces.
*/
private static class JettyNegoProvider implements InvocationHandler {
/** This peer's supported protocols. */
private final List protocols;
/** Set when remote peer notifies ALPN is unsupported. */
boolean unsupported;
/** The protocol the server selected. */
String selected;
JettyNegoProvider(List protocols) {
this.protocols = protocols;
}
@Override public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
String methodName = method.getName();
Class returnType = method.getReturnType();
if (args == null) {
args = Util.EMPTY_STRING_ARRAY;
}
if (methodName.equals("supports") && boolean.class == returnType) {
return true; // ALPN is supported.
} else if (methodName.equals("unsupported") && void.class == returnType) {
this.unsupported = true; // Peer doesn't support ALPN.
return null;
} else if (methodName.equals("protocols") && args.length == 0) {
return protocols; // Client advertises these protocols.
} else if ((methodName.equals("selectProtocol") || methodName.equals("select"))
&& String.class == returnType && args.length == 1 && args[0] instanceof List) {
List peerProtocols = (List) args[0];
// Pick the first known protocol the peer advertises.
for (int i = 0, size = peerProtocols.size(); i < size; i++) {
if (protocols.contains(peerProtocols.get(i))) {
return selected = peerProtocols.get(i);
}
}
return selected = protocols.get(0); // On no intersection, try peer's first protocol.
} else if ((methodName.equals("protocolSelected") || methodName.equals("selected"))
&& args.length == 1) {
this.selected = (String) args[0]; // Server selected this protocol.
return null;
} else {
return method.invoke(this, args);
}
}
}
}