content: /**
   * Copyright (C) 2010-2016 eBusiness Information, Excilys Group
   * Copyright (C) 2016-2020 the AndroidAnnotations project
   *
   * 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 org.androidannotations.internal.core.handler;
  
  import static com.helger.jcodemodel.JExpr._new;
  import static com.helger.jcodemodel.JExpr._null;
  import static com.helger.jcodemodel.JExpr._super;
  import static com.helger.jcodemodel.JExpr.cast;
  import static com.helger.jcodemodel.JExpr.invoke;
  import static com.helger.jcodemodel.JExpr.lit;
  
  import javax.lang.model.element.Element;
  
  import org.androidannotations.AndroidAnnotationsEnvironment;
  import org.androidannotations.ElementValidation;
  import org.androidannotations.annotations.HttpsClient;
  import org.androidannotations.handler.BaseAnnotationHandler;
  import org.androidannotations.handler.MethodInjectionHandler;
  import org.androidannotations.helper.InjectHelper;
  import org.androidannotations.holder.EComponentHolder;
  import org.androidannotations.internal.process.ProcessHolder;
  import org.androidannotations.rclass.IRClass;
  import org.androidannotations.rclass.IRInnerClass;
  
  import com.helger.jcodemodel.IJAssignmentTarget;
  import com.helger.jcodemodel.IJExpression;
  import com.helger.jcodemodel.JBlock;
  import com.helger.jcodemodel.JCatchBlock;
  import com.helger.jcodemodel.JDefinedClass;
  import com.helger.jcodemodel.JFieldRef;
  import com.helger.jcodemodel.JInvocation;
  import com.helger.jcodemodel.JMethod;
  import com.helger.jcodemodel.JMod;
  import com.helger.jcodemodel.JTryBlock;
  import com.helger.jcodemodel.JVar;
  
  @SuppressWarnings("deprecation")
  public class HttpsClientHandler extends BaseAnnotationHandler<EComponentHolder> implements MethodInjectionHandler<EComponentHolder> {
  
  	private final InjectHelper<EComponentHolder> injectHelper;
  
  	public HttpsClientHandler(AndroidAnnotationsEnvironment environment) {
  		super(HttpsClient.class, environment);
  		injectHelper = new InjectHelper<>(validatorHelper, this);
  	}
  
  	@Override
  	public void validate(Element element, ElementValidation validation) {
  		injectHelper.validate(HttpsClient.class, element, validation);
  		if (!validation.isValid()) {
  			return;
  		}
  
  		validatorHelper.annotationParameterIsOptionalValidResId(element, IRClass.Res.RAW, "keyStore", validation);
  		validatorHelper.annotationParameterIsOptionalValidResId(element, IRClass.Res.RAW, "trustStore", validation);
  
  		validatorHelper.isNotPrivate(element, validation);
  	}
  
  	@Override
  	public void process(Element element, EComponentHolder holder) throws Exception {
  		injectHelper.process(element, holder);
  	}
  
  	@Override
  	public JBlock getInvocationBlock(EComponentHolder holder) {
  		return holder.getInitBodyInjectionBlock();
  	}
  
  	@Override
  	public void assignValue(JBlock targetBlock, IJAssignmentTarget fieldRef, EComponentHolder holder, Element element, Element param) {
  		IRInnerClass rInnerClass = getEnvironment().getRClass().get(IRClass.Res.RAW);
  		HttpsClient annotation = element.getAnnotation(HttpsClient.class);
  		JFieldRef trustStoreRawIdRef = annotationHelper.extractOneAnnotationFieldRef(element, getTarget(), rInnerClass, false, "trustStore", "trustStoreResName");
  		JFieldRef keyStoreRawIdRef = annotationHelper.extractOneAnnotationFieldRef(element, getTarget(), rInnerClass, false, "keyStore", "keyStoreResName");
  		String trustStorePwd = annotation.trustStorePwd();
  		String keyStorePwd = annotation.keyStorePwd();
  
  		boolean allowAllHostnames = annotation.allowAllHostnames();
  		boolean useCustomTrustStore = trustStoreRawIdRef != null;
  		boolean useCustomKeyStore = keyStoreRawIdRef != null;
  
  		ProcessHolder.Classes classes = getClasses();
  
  		JDefinedClass jAnonClass = getCodeModel().anonymousClass(classes.DEFAULT_HTTP_CLIENT);
  
  		JMethod method = jAnonClass.method(JMod.PROTECTED, classes.CLIENT_CONNECTION_MANAGER, "createClientConnectionManager");
  		method.annotate(Override.class);
  
  		JTryBlock jTryBlock = method.body()._try();
  		JVar jVarTrusted = null;
  		JVar jVarKeystore = null;
  
  		if (useCustomKeyStore) {
  			jVarKeystore = jTryBlock.body().decl(classes.KEY_STORE, "keystore");
  			jVarKeystore.init(classes.KEY_STORE.staticInvoke("getInstance").arg("BKS"));
  		}
  
  		if (useCustomTrustStore || useCustomKeyStore) {
  			/*
  			 * use default trust store
  			 */
  			jVarTrusted = jTryBlock.body().decl(classes.KEY_STORE, "trusted");
  			jVarTrusted.init(classes.KEY_STORE.staticInvoke("getInstance").arg("BKS"));
  
  		}
  
  		JVar jVarRes = null;
  		JVar jVarTrstFile = null;
  		JVar jVarKeyFile = null;
  
  		if (useCustomKeyStore || useCustomTrustStore) {
  			jVarRes = jTryBlock.body().decl(classes.RESOURCES, "res", invoke("getResources"));
  		}
  
  		if (useCustomKeyStore) {
  			JInvocation jInvRawKey = jVarRes.invoke("openRawResource").arg(keyStoreRawIdRef);
  			jVarKeyFile = jTryBlock.body().decl(classes.INPUT_STREAM, "inKeystore", jInvRawKey);
  		}
  
  		if (useCustomTrustStore) {
  			JInvocation jInvRawTrust = jVarRes.invoke("openRawResource").arg(trustStoreRawIdRef);
  			jVarTrstFile = jTryBlock.body().decl(classes.INPUT_STREAM, "inTrustStore", jInvRawTrust);
  
  		} else if (useCustomKeyStore) {
  			jVarTrstFile = jTryBlock.body().decl(classes.INPUT_STREAM, "inTrustStore", _new(classes.FILE_INPUT_STREAM).arg("/system/etc/security/cacerts.bks"));
  		}
  
  		// try load
  		if (useCustomKeyStore || useCustomTrustStore) {
  			JTryBlock jTryLoad = jTryBlock.body()._try();
  
  			if (useCustomKeyStore) {
  				jTryLoad.body().add(invoke(jVarKeystore, "load").arg(jVarKeyFile).arg(invoke(lit(keyStorePwd), "toCharArray")));
  			}
  
  			jTryLoad.body().add(invoke(jVarTrusted, "load").arg(jVarTrstFile).arg(invoke(lit(trustStorePwd), "toCharArray")));
  
  			// finally load
  			JBlock jFinally = jTryLoad._finally();
  			if (useCustomKeyStore) {
  				jFinally.add(invoke(jVarKeyFile, "close"));
  			}
  
  			jFinally.add(invoke(jVarTrstFile, "close"));
  		}
  
  		if (null == jVarKeystore && null == jVarTrusted) {
  			JVar jVarCcm = jTryBlock.body().decl(classes.CLIENT_CONNECTION_MANAGER, "ccm");
  			jVarCcm.init(_super().invoke("createClientConnectionManager"));
  
  			if (allowAllHostnames) {
  				IJExpression jCast = cast(classes.SSL_SOCKET_FACTORY, jVarCcm.invoke("getSchemeRegistry").invoke("getScheme").arg("https").invoke("getSocketFactory"));
  				jTryBlock.body().add(jCast.invoke("setHostnameVerifier").arg(classes.SSL_SOCKET_FACTORY.staticRef("ALLOW_ALL_HOSTNAME_VERIFIER")));
  			}
  
  			jTryBlock.body()._return(jVarCcm);
  
  		} else {
  			JVar jVarSslFact = jTryBlock.body().decl(classes.SSL_SOCKET_FACTORY, "newSslSocketFactory");
  			jVarSslFact.init(_new(classes.SSL_SOCKET_FACTORY).arg(null == jVarKeystore ? _null() : jVarKeystore).arg(keyStorePwd).arg(jVarTrusted));
  
  			if (allowAllHostnames) {
  				jTryBlock.body().add(invoke(jVarSslFact, "setHostnameVerifier").arg(classes.SSL_SOCKET_FACTORY.staticRef("ALLOW_ALL_HOSTNAME_VERIFIER")));
  			}
  
  			JVar jVarSchemeReg = jTryBlock.body().decl(classes.SCHEME_REGISTRY, "registry");
  			jVarSchemeReg.init(_new(classes.SCHEME_REGISTRY));
  			jTryBlock.body().add(invoke(jVarSchemeReg, "register").arg(_new(classes.SCHEME).arg("https").arg(jVarSslFact).arg(lit(443))));
  			jTryBlock.body().add(invoke(jVarSchemeReg, "register").arg(_new(classes.SCHEME).arg("http").arg(classes.PLAIN_SOCKET_FACTORY.staticInvoke("getSocketFactory")).arg(lit(80))));
  
  			JVar jVarCcm = jTryBlock.body().decl(classes.CLIENT_CONNECTION_MANAGER, "ccm");
  			jVarCcm.init(_new(classes.SINGLE_CLIENT_CONN_MANAGER).arg(invoke("getParams")).arg(jVarSchemeReg));
  			jTryBlock.body()._return(jVarCcm);
  		}
  
  		// catch block
  		JCatchBlock jCatchBlock = jTryBlock._catch(classes.EXCEPTION);
  		JVar jVarExceptionParam = jCatchBlock.param("e");
  		jCatchBlock.body().add(jVarExceptionParam.invoke("printStackTrace"));
  		jCatchBlock.body()._return(_super().invoke("createClientConnectionManager"));
  
  		targetBlock.add(fieldRef.assign(_new(jAnonClass)));
  	}
  
  	@Override
  	public void validateEnclosingElement(Element element, ElementValidation valid) {
  		validatorHelper.enclosingElementHasEnhancedComponentAnnotation(element, valid);
  	}
  }
  