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https://github.com/vanitasvitae/Smack.git
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Work on Jingle Encrypted Transfers
This commit is contained in:
parent
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commit
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GPG key ID:
62BEE9264BF17311
11 changed files with 210 additions and 96 deletions
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@ -17,31 +17,22 @@
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package org.jivesoftware.smackx.jet;
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import java.io.File;
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import java.io.FileInputStream;
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import java.security.SecureRandom;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.WeakHashMap;
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import java.util.logging.Logger;
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import javax.crypto.Cipher;
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import javax.crypto.CipherInputStream;
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import javax.crypto.KeyGenerator;
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import javax.crypto.SecretKey;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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import org.jivesoftware.smack.Manager;
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import org.jivesoftware.smack.XMPPConnection;
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import org.jivesoftware.smack.packet.ExtensionElement;
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import org.jivesoftware.smack.util.StringUtils;
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import org.jivesoftware.smackx.jet.element.JetSecurityElement;
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import org.jivesoftware.smackx.jet.internal.JetSecurity;
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import org.jivesoftware.smackx.jft.controller.OutgoingFileOfferController;
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import org.jivesoftware.smackx.jft.element.JingleFileTransferChildElement;
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import org.jivesoftware.smackx.jft.element.JingleFileTransferElement;
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import org.jivesoftware.smackx.jft.internal.JingleOutgoingFileOffer;
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import org.jivesoftware.smackx.jingle.element.JingleContentDescriptionChildElement;
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import org.jivesoftware.smackx.jingle.JingleManager;
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import org.jivesoftware.smackx.jingle.JingleTransportManager;
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import org.jivesoftware.smackx.jingle.components.JingleContent;
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import org.jivesoftware.smackx.jingle.components.JingleSession;
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import org.jivesoftware.smackx.jingle.element.JingleContentElement;
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import org.jivesoftware.smackx.jingle.util.Role;
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import org.jxmpp.jid.FullJid;
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@ -56,8 +47,11 @@ public final class JetManager extends Manager {
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private static final Map<String, JingleEncryptionMethod> encryptionMethods = new HashMap<>();
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private final JingleManager jingleManager;
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private JetManager(XMPPConnection connection) {
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super(connection);
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this.jingleManager = JingleManager.getInstanceFor(connection);
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}
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public static JetManager getInstanceFor(XMPPConnection connection) {
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@ -72,85 +66,24 @@ public final class JetManager extends Manager {
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}
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public OutgoingFileOfferController sendEncryptedFile(FullJid recipient, File file, String encryptionMethodNamespace) throws Exception {
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JingleEncryptionMethod encryptionMethod = getEncryptionMethod(encryptionMethodNamespace);
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if (encryptionMethod == null) {
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throw new IllegalStateException("No encryption method with namespace " + encryptionMethodNamespace + " registered.");
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if (file == null || !file.exists()) {
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throw new IllegalArgumentException("File MUST NOT be null and MUST exist.");
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}
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int keyLength = 256;
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String keyType = "AES";
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String cipherMode = "AES/GCM/NoPadding";
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JingleSession session = jingleManager.createSession(Role.initiator, recipient);
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KeyGenerator keyGenerator = KeyGenerator.getInstance(keyType);
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keyGenerator.init(keyLength);
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byte[] key = keyGenerator.generateKey().getEncoded();
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SecureRandom secureRandom = new SecureRandom();
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byte[] iv = new byte[keyLength];
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secureRandom.nextBytes(iv);
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byte[] keyAndIv = new byte[2 * keyLength];
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System.arraycopy(key, 0, keyAndIv, 0, keyLength);
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System.arraycopy(iv, 0, keyAndIv, keyLength, keyLength);
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SecretKey secretKey = new SecretKeySpec(key, keyType);
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IvParameterSpec ivSpec = new IvParameterSpec(iv);
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Cipher cipher = Cipher.getInstance(cipherMode, "BC");
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cipher.init(Cipher.ENCRYPT_MODE, secretKey, ivSpec);
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Exception ioe = null;
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byte[] fileBuf = null;
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FileInputStream fi = null;
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CipherInputStream ci = null;
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try {
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fi = new FileInputStream(file);
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ci = new CipherInputStream(fi, cipher);
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fileBuf = new byte[(int) file.length()];
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ci.read(fileBuf);
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} catch (Exception e) {
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ioe = e;
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} finally {
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if (ci != null) {
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ci.close();
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}
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if (fi != null) {
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fi.close();
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}
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}
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if (ioe != null) {
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throw ioe;
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}
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if (fileBuf == null) {
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return null;
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}
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String contentName = StringUtils.randomString(24);
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ExtensionElement encryptionExtension = encryptionMethod.encryptJingleTransfer(recipient, keyAndIv);
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JetSecurityElement securityElement = new JetSecurityElement(contentName, encryptionExtension);
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JingleContent content = new JingleContent(JingleContentElement.Creator.initiator, JingleContentElement.Senders.initiator);
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session.addContent(content);
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JingleOutgoingFileOffer offer = new JingleOutgoingFileOffer(file);
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content.setDescription(offer);
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JingleFileTransferChildElement fileTransferChild = JingleFileTransferChildElement.getBuilder().setFile(file).build();
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JingleFileTransferElement fileTransfer = new JingleFileTransferElement(Collections.<JingleContentDescriptionChildElement>singletonList(fileTransferChild));
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JingleTransportManager transportManager = jingleManager.getBestAvailableTransportManager();
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content.setTransport(transportManager.createTransport(content));
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JingleContentElement content = JingleContentElement.getBuilder()
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.setCreator(JingleContentElement.Creator.initiator)
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.setName(contentName)
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//.setTransport(offer.getTransportSession().createTransport())
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.setSecurity(securityElement)
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.setDescription(fileTransfer)
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.build();
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JetSecurity security = new JetSecurity(encryptionMethodNamespace, connection());
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content.setSecurity(security);
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session.initiate(connection());
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return offer;
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}
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@ -16,8 +16,25 @@
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*/
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package org.jivesoftware.smackx.jet.internal;
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import java.security.InvalidAlgorithmParameterException;
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import java.security.InvalidKeyException;
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import java.security.NoSuchAlgorithmException;
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import java.security.NoSuchProviderException;
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import java.security.SecureRandom;
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import javax.crypto.Cipher;
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import javax.crypto.KeyGenerator;
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import javax.crypto.NoSuchPaddingException;
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import javax.crypto.SecretKey;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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import org.jivesoftware.smack.XMPPConnection;
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import org.jivesoftware.smack.packet.ExtensionElement;
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import org.jivesoftware.smackx.bytestreams.BytestreamSession;
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import org.jivesoftware.smackx.jet.JetManager;
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import org.jivesoftware.smackx.jet.JingleEncryptionMethod;
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import org.jivesoftware.smackx.jet.element.JetSecurityElement;
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import org.jivesoftware.smackx.jingle.callbacks.JingleSecurityCallback;
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import org.jivesoftware.smackx.jingle.components.JingleSecurity;
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import org.jivesoftware.smackx.jingle.element.JingleContentSecurityInfoElement;
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import org.jivesoftware.smackx.jingle.element.JingleElement;
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@ -30,8 +47,53 @@ public class JetSecurity extends JingleSecurity<JetSecurityElement> {
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public static final String NAMESPACE_V0 = "urn:xmpp:jingle:jet:0";
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public static final String NAMESPACE = NAMESPACE_V0;
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private final String methodNamespace;
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private final Cipher cipher;
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private ExtensionElement child;
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public JetSecurity(Cipher cipher, ExtensionElement child) {
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super();
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this.cipher = cipher;
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this.child = child;
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this.methodNamespace = child.getNamespace();
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}
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public JetSecurity(String methodNamespace, XMPPConnection connection)
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throws NoSuchAlgorithmException, NoSuchProviderException, NoSuchPaddingException,
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InvalidAlgorithmParameterException, InvalidKeyException {
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this.methodNamespace = methodNamespace;
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JetManager jetManager = JetManager.getInstanceFor(connection);
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JingleEncryptionMethod encryptionMethod = jetManager.getEncryptionMethod(methodNamespace);
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if (encryptionMethod == null) {
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throw new IllegalStateException("No encryption method with namespace " + methodNamespace + " registered.");
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}
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//Create key and cipher
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int keyLength = 256;
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String keyType = "AES";
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String cipherMode = "AES/GCM/NoPadding";
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KeyGenerator keyGenerator = KeyGenerator.getInstance(keyType);
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keyGenerator.init(keyLength);
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byte[] key = keyGenerator.generateKey().getEncoded();
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SecureRandom secureRandom = new SecureRandom();
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byte[] iv = new byte[keyLength];
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secureRandom.nextBytes(iv);
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byte[] keyAndIv = new byte[2 * keyLength];
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System.arraycopy(key, 0, keyAndIv, 0, keyLength);
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System.arraycopy(iv, 0, keyAndIv, keyLength, keyLength);
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SecretKey secretKey = new SecretKeySpec(key, keyType);
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IvParameterSpec ivSpec = new IvParameterSpec(iv);
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cipher = Cipher.getInstance(cipherMode, "BC");
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cipher.init(Cipher.ENCRYPT_MODE, secretKey, ivSpec);
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}
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@Override
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public JetSecurityElement getElement() {
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return new JetSecurityElement(getParent().getName(), child);
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@ -41,4 +103,16 @@ public class JetSecurity extends JingleSecurity<JetSecurityElement> {
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public JingleElement handleSecurityInfo(JingleContentSecurityInfoElement element, JingleElement wrapping) {
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return null;
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}
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@Override
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public void decryptIncomingBytestream(BytestreamSession bytestreamSession, JingleSecurityCallback callback) {
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JetSecurityBytestreamSession securityBytestreamSession = new JetSecurityBytestreamSession(bytestreamSession, cipher);
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callback.onSecurityReady(securityBytestreamSession);
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}
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@Override
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public void encryptIncomingBytestream(BytestreamSession bytestreamSession, JingleSecurityCallback callback) {
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JetSecurityBytestreamSession securityBytestreamSession = new JetSecurityBytestreamSession(bytestreamSession, cipher);
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callback.onSecurityReady(securityBytestreamSession);
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}
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}
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@ -0,0 +1,51 @@
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/**
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*
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* Copyright 2017 Paul Schaub
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smackx.jet.internal;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import javax.crypto.Cipher;
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import javax.crypto.CipherInputStream;
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import javax.crypto.CipherOutputStream;
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import org.jivesoftware.smackx.bytestreams.BytestreamSession;
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import org.jivesoftware.smackx.jingle.components.JingleSecurityBytestreamSession;
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public class JetSecurityBytestreamSession extends JingleSecurityBytestreamSession {
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private final Cipher cipher;
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public JetSecurityBytestreamSession(BytestreamSession session, Cipher cipher) {
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super(session);
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this.cipher = cipher;
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}
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@Override
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public InputStream getInputStream() throws IOException {
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return new CipherInputStream(wrapped.getInputStream(), cipher);
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}
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@Override
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public OutputStream getOutputStream() throws IOException {
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return new CipherOutputStream(wrapped.getOutputStream(), cipher);
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}
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@Override
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public void close() throws IOException {
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wrapped.close();
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}
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}
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@ -55,7 +55,7 @@ public class JingleIncomingFileOffer extends AbstractJingleFileOffer<RemoteFile>
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}
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@Override
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public void onTransportReady(BytestreamSession bytestreamSession) {
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public void onBytestreamReady(BytestreamSession bytestreamSession) {
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LOGGER.log(Level.INFO, "Receive file to " + target.getAbsolutePath());
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File mFile = target;
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if (!mFile.exists()) {
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@ -89,7 +89,7 @@ public class JingleIncomingFileOffer extends AbstractJingleFileOffer<RemoteFile>
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outputStream.write(filebuf);
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outputStream.flush();
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} catch (IOException e) {
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LOGGER.log(Level.SEVERE, "Cannot get InputStream from BytestreamSession: " + e, e);
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} finally {
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@ -55,7 +55,7 @@ public class JingleIncomingFileRequest extends AbstractJingleFileRequest<RemoteF
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}
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@Override
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public void onTransportReady(BytestreamSession bytestreamSession) {
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public void onBytestreamReady(BytestreamSession bytestreamSession) {
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}
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}
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@ -46,7 +46,7 @@ public class JingleOutgoingFileOffer extends AbstractJingleFileOffer<LocalFile>
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}
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@Override
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public void onTransportReady(BytestreamSession bytestreamSession) {
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public void onBytestreamReady(BytestreamSession bytestreamSession) {
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File mFile = ((LocalFile) file).getFile();
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OutputStream outputStream = null;
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InputStream inputStream = null;
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@ -47,7 +47,7 @@ public class JingleOutgoingFileRequest extends AbstractJingleFileRequest<RemoteF
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}
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@Override
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public void onTransportReady(BytestreamSession bytestreamSession) {
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public void onBytestreamReady(BytestreamSession bytestreamSession) {
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}
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}
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@ -0,0 +1,29 @@
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/**
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*
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* Copyright 2017 Paul Schaub
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smackx.jingle.callbacks;
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import org.jivesoftware.smackx.bytestreams.BytestreamSession;
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/**
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* Callback used to signal success/failure of Jingle Security components.
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*/
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public interface JingleSecurityCallback {
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void onSecurityReady(BytestreamSession bytestreamSession);
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void onSecurityFailed(Exception e);
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}
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@ -37,6 +37,7 @@ import org.jivesoftware.smackx.jingle.JingleTransportManager;
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import org.jivesoftware.smackx.jingle.adapter.JingleDescriptionAdapter;
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import org.jivesoftware.smackx.jingle.adapter.JingleSecurityAdapter;
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import org.jivesoftware.smackx.jingle.adapter.JingleTransportAdapter;
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import org.jivesoftware.smackx.jingle.callbacks.JingleSecurityCallback;
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import org.jivesoftware.smackx.jingle.callbacks.JingleTransportCallback;
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import org.jivesoftware.smackx.jingle.element.JingleContentDescriptionElement;
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import org.jivesoftware.smackx.jingle.element.JingleContentElement;
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@ -48,7 +49,7 @@ import org.jivesoftware.smackx.jingle.element.JingleReasonElement;
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/**
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* Internal class that holds the state of a content in a modifiable form.
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*/
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public class JingleContent implements JingleTransportCallback {
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public class JingleContent implements JingleTransportCallback, JingleSecurityCallback {
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private static final Logger LOGGER = Logger.getLogger(JingleContent.class.getName());
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@ -131,7 +132,7 @@ public class JingleContent implements JingleTransportCallback {
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return new JingleContent(description, transport, security, content.getName(), content.getDisposition(), content.getCreator(), content.getSenders());
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}
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/* HANDLEXYZ */
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/* HANDLE_XYZ */
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public IQ handleJingleRequest(JingleElement request, XMPPConnection connection) {
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switch (request.getAction()) {
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@ -334,7 +335,17 @@ public class JingleContent implements JingleTransportCallback {
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throw new AssertionError("bytestreamSession MUST NOT be null at this point.");
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}
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description.onTransportReady(bytestreamSession);
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if (security != null) {
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if (isReceiving()) {
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LOGGER.log(Level.INFO, "Decrypt incoming Bytestream.");
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getSecurity().decryptIncomingBytestream(bytestreamSession, this);
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} else if (isSending()) {
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LOGGER.log(Level.INFO, "Encrypt outgoing Bytestream.");
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getSecurity().encryptIncomingBytestream(bytestreamSession, this);
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}
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} else {
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description.onBytestreamReady(bytestreamSession);
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}
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}
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@Override
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@ -352,6 +363,16 @@ public class JingleContent implements JingleTransportCallback {
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}
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}
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@Override
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public void onSecurityReady(BytestreamSession bytestreamSession) {
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getDescription().onBytestreamReady(bytestreamSession);
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}
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@Override
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public void onSecurityFailed(Exception e) {
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LOGGER.log(Level.SEVERE, "Security failed: " + e, e);
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}
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private void replaceTransport(Set<String> blacklist, XMPPConnection connection)
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throws SmackException.NotConnectedException, InterruptedException,
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XMPPException.XMPPErrorException, SmackException.NoResponseException {
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@ -42,7 +42,7 @@ public abstract class JingleDescription<D extends JingleContentDescriptionElemen
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return parent;
|
||||
}
|
||||
|
||||
public abstract void onTransportReady(BytestreamSession bytestreamSession);
|
||||
public abstract void onBytestreamReady(BytestreamSession bytestreamSession);
|
||||
|
||||
public abstract String getNamespace();
|
||||
}
|
||||
|
|
|
|||
|
|
@ -16,6 +16,8 @@
|
|||
*/
|
||||
package org.jivesoftware.smackx.jingle.components;
|
||||
|
||||
import org.jivesoftware.smackx.bytestreams.BytestreamSession;
|
||||
import org.jivesoftware.smackx.jingle.callbacks.JingleSecurityCallback;
|
||||
import org.jivesoftware.smackx.jingle.element.JingleContentSecurityElement;
|
||||
import org.jivesoftware.smackx.jingle.element.JingleContentSecurityInfoElement;
|
||||
import org.jivesoftware.smackx.jingle.element.JingleElement;
|
||||
|
|
@ -40,4 +42,8 @@ public abstract class JingleSecurity<D extends JingleContentSecurityElement> {
|
|||
public JingleContent getParent() {
|
||||
return parent;
|
||||
}
|
||||
|
||||
public abstract void decryptIncomingBytestream(BytestreamSession bytestreamSession, JingleSecurityCallback callback);
|
||||
|
||||
public abstract void encryptIncomingBytestream(BytestreamSession bytestreamSession, JingleSecurityCallback callbacks);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue