Refactor: Restructure Project

- Move components that depend on the service contracts into scheme
  package.
- Move cxf related components into util package.
- Rename SameThread to SingleThreaded.

2 files changed, 175 insertions, 0 deletions

diff --git a/src/main/java/at/gv/egiz/moazs/util/ClientFactory.java b/src/main/java/at/gv/egiz/moazs/util/ClientFactory.java
new file mode 100644
index 0000000..e7761fe
--- /dev/null
+++ b/src/main/java/at/gv/egiz/moazs/util/ClientFactory.java
@@ -0,0 +1,111 @@
+package at.gv.egiz.moazs.util;
+
+import at.gv.zustellung.app2mzs.xsd.ClientType;
+import at.gv.zustellung.app2mzs.xsd.KeyStoreType;
+import at.gv.zustellung.app2mzs.xsd.SSLType;
+import org.apache.cxf.configuration.jsse.TLSClientParameters;
+import org.apache.cxf.endpoint.Client;
+import org.apache.cxf.frontend.ClientProxy;
+import org.apache.cxf.jaxws.JaxWsClientFactoryBean;
+import org.apache.cxf.jaxws.JaxWsProxyFactoryBean;
+import org.apache.cxf.transport.http.HTTPConduit;
+import org.apache.cxf.transports.http.configuration.HTTPClientPolicy;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import javax.annotation.Nullable;
+import javax.net.ssl.SSLContext;
+import javax.xml.ws.BindingProvider;
+import javax.xml.ws.soap.SOAPBinding;
+
+import static at.gv.zustellung.app2mzs.xsd.KeyStoreType.keyStoreTypeBuilder;
+
+@Component
+public class ClientFactory {
+
+    private static final Logger log = LoggerFactory.getLogger(ClientFactory.class);
+
+    private final StoreSOAPBodyBinaryInRepositoryInterceptor storeResponseInterceptor;
+    private final SSLContextCreator sslContextCreator;
+    private final FileUtils fileUtils;
+
+    @Autowired
+    public ClientFactory(StoreSOAPBodyBinaryInRepositoryInterceptor storeResponseInterceptor,
+                         SSLContextCreator creator,
+                         FileUtils fileUtils) {
+        this.storeResponseInterceptor = storeResponseInterceptor;
+        this.sslContextCreator = creator;
+        this.fileUtils = fileUtils;
+    }
+
+    /**
+     * Creates a client that communicates with a soap service.
+     *
+     * @param params for the client, such as service url and ssl parameters.
+     * @return the client
+     */
+    public <T> T create(ClientType params, Class<T> clazz) {
+
+        var factory = new JaxWsClientFactoryBean();
+        factory.setServiceClass(clazz);
+        factory.setAddress(params.getURL());
+        factory.getInInterceptors().add(storeResponseInterceptor);
+
+        var proxy = new JaxWsProxyFactoryBean(factory).create();
+        Client client = ClientProxy.getClient(proxy);
+        HTTPConduit http = (HTTPConduit) client.getConduit();
+
+        var bindingProvider = (BindingProvider) proxy;
+        SOAPBinding binding = (SOAPBinding) bindingProvider.getBinding();
+        binding.setMTOMEnabled(true);
+
+        var httpClientPolicy = new HTTPClientPolicy();
+        httpClientPolicy.setConnectionTimeout(params.getConnectionTimeout().longValueExact());
+        httpClientPolicy.setReceiveTimeout(params.getReceiveTimeout().longValueExact());
+        http.setClient(httpClientPolicy);
+
+        if (params.getURL().startsWith("https")) {
+            TLSClientParameters tlsParams = setupTLSParams(params.getSSL());
+            http.setTlsClientParameters(tlsParams);
+            log.info("SSLContext initialized. ");
+        }
+
+        return ((T)proxy);
+    }
+
+    private TLSClientParameters setupTLSParams(SSLType ssl) {
+
+        var tlsParams = new TLSClientParameters();
+        var keystore = resolveKeyStorePath(ssl.getKeyStore());
+
+        SSLContext sslContext;
+        if (ssl.isTrustAll()) {
+            sslContext = sslContextCreator.createUnsafeSSLContext(keystore);
+        } else {
+            var truststore = resolveKeyStorePath(ssl.getTrustStore());
+            sslContext = sslContextCreator.createSSLContext(keystore, truststore);
+        }
+        tlsParams.setSSLSocketFactory(sslContext.getSocketFactory());
+
+        if (ssl.isLaxHostNameVerification()) {
+            tlsParams.setDisableCNCheck(true);
+        }
+
+        return tlsParams;
+    }
+
+    private KeyStoreType resolveKeyStorePath(@Nullable KeyStoreType store) {
+
+        if (store == null) return null;
+
+        var resolvedURI = "file:" + fileUtils.determinePath(store.getFileName());
+        log.trace("Resolved key store path from {} to {}.", store.getFileName(), resolvedURI);
+
+        return keyStoreTypeBuilder(store)
+                .withFileName(resolvedURI)
+                .build();
+    }
+
+}
diff --git a/src/main/java/at/gv/egiz/moazs/util/StoreSOAPBodyBinaryInRepositoryInterceptor.java b/src/main/java/at/gv/egiz/moazs/util/StoreSOAPBodyBinaryInRepositoryInterceptor.java
new file mode 100644
index 0000000..2db81ab
--- /dev/null
+++ b/src/main/java/at/gv/egiz/moazs/util/StoreSOAPBodyBinaryInRepositoryInterceptor.java
@@ -0,0 +1,64 @@
+package at.gv.egiz.moazs.util;
+
+import at.gv.egiz.moazs.repository.DeliveryRepository;
+import at.gv.egiz.moazs.scheme.SOAPUtils;
+import org.apache.cxf.message.Message;
+import org.apache.cxf.phase.AbstractPhaseInterceptor;
+import org.apache.cxf.phase.Phase;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.w3c.dom.Element;
+import org.xml.sax.SAXException;
+
+import javax.xml.parsers.ParserConfigurationException;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+
+import static at.gv.egiz.moazs.MoaZSException.moaZSException;
+
+@Component
+public class StoreSOAPBodyBinaryInRepositoryInterceptor extends AbstractPhaseInterceptor<Message> {
+
+    private static final Logger log = LoggerFactory.getLogger(StoreSOAPBodyBinaryInRepositoryInterceptor.class);
+
+    private final CXFMessageUtils messageUtils;
+    private final SOAPUtils soapUtils;
+    private final DeliveryRepository repository;
+
+    @Autowired
+    public StoreSOAPBodyBinaryInRepositoryInterceptor(CXFMessageUtils extractor, SOAPUtils soapUtils,
+                                                      DeliveryRepository repository) {
+        super(Phase.RECEIVE);
+        this.messageUtils = extractor;
+        this.soapUtils = soapUtils;
+        this.repository = repository;
+    }
+
+    public void handleMessage(Message message) {
+
+        try {
+            byte[] content = messageUtils.copyContent(message);
+
+            if(log.isTraceEnabled()) {
+                log.trace("Interceptor received this SOAP message: {}. ", new String(content, StandardCharsets.UTF_8));
+            }
+
+            if(content.length > 0) {
+                Element document = soapUtils.toDOM(content);
+                byte[] status = soapUtils.unwrapSoapEnvelope(document);
+                String appDeliveryID = soapUtils.getAppDeliveryIDFrom(document);
+                repository.addSignedDeliveryRequestStatus(status, appDeliveryID);
+
+                if(log.isTraceEnabled()) {
+                    log.trace("DeliveryRequestStatus with AppDeliveryID={} unwrapped and stored: {}. ",
+                            appDeliveryID, new String(status, StandardCharsets.UTF_8));
+                }
+            }
+        } catch (ParserConfigurationException | SAXException | IOException | NullPointerException e) {
+            throw moaZSException("Could not extract signed data from message.", e);
+        }
+    }
+
+}