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diff --git a/src/main/java/de/thedevstack/conversationsplus/parser/IqParser.java b/src/main/java/de/thedevstack/conversationsplus/parser/IqParser.java
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+++ b/src/main/java/de/thedevstack/conversationsplus/parser/IqParser.java
@@ -0,0 +1,355 @@
+package de.thedevstack.conversationsplus.parser;
+
+import android.support.annotation.NonNull;
+import android.util.Base64;
+import android.util.Log;
+import android.util.Pair;
+
+import org.whispersystems.libaxolotl.IdentityKey;
+import org.whispersystems.libaxolotl.ecc.Curve;
+import org.whispersystems.libaxolotl.ecc.ECPublicKey;
+import org.whispersystems.libaxolotl.state.PreKeyBundle;
+
+import java.io.ByteArrayInputStream;
+import java.security.cert.CertificateException;
+import java.security.cert.CertificateFactory;
+import java.security.cert.X509Certificate;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import de.thedevstack.android.logcat.Logging;
+import de.thedevstack.conversationsplus.Config;
+import de.thedevstack.conversationsplus.crypto.axolotl.AxolotlService;
+import de.thedevstack.conversationsplus.entities.Account;
+import de.thedevstack.conversationsplus.entities.Contact;
+import de.thedevstack.conversationsplus.services.AvatarService;
+import de.thedevstack.conversationsplus.services.XmppConnectionService;
+import de.thedevstack.conversationsplus.utils.Xmlns;
+import de.thedevstack.conversationsplus.xml.Element;
+import de.thedevstack.conversationsplus.xmpp.OnIqPacketReceived;
+import de.thedevstack.conversationsplus.xmpp.OnUpdateBlocklist;
+import de.thedevstack.conversationsplus.xmpp.jid.Jid;
+import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
+
+public class IqParser extends AbstractParser implements OnIqPacketReceived {
+
+ public IqParser(final XmppConnectionService service) {
+ super(service);
+ }
+
+ private void rosterItems(final Account account, final Element query) {
+ final String version = query.getAttribute("ver");
+ if (version != null) {
+ account.getRoster().setVersion(version);
+ }
+ for (final Element item : query.getChildren()) {
+ if (item.getName().equals("item")) {
+ final Jid jid = item.getAttributeAsJid("jid");
+ if (jid == null) {
+ continue;
+ }
+ final String name = item.getAttribute("name");
+ final String subscription = item.getAttribute("subscription");
+ final Contact contact = account.getRoster().getContact(jid);
+ if (!contact.getOption(Contact.Options.DIRTY_PUSH)) {
+ contact.setServerName(name);
+ contact.parseGroupsFromElement(item);
+ }
+ if (subscription != null) {
+ if (subscription.equals("remove")) {
+ contact.resetOption(Contact.Options.IN_ROSTER);
+ contact.resetOption(Contact.Options.DIRTY_DELETE);
+ contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
+ } else {
+ contact.setOption(Contact.Options.IN_ROSTER);
+ contact.resetOption(Contact.Options.DIRTY_PUSH);
+ contact.parseSubscriptionFromElement(item);
+ }
+ }
+ AvatarService.getInstance().clear(contact);
+ }
+ }
+ mXmppConnectionService.updateConversationUi();
+ mXmppConnectionService.updateRosterUi();
+ }
+
+ public String avatarData(final IqPacket packet) {
+ final Element pubsub = packet.findChild("pubsub",
+ "http://jabber.org/protocol/pubsub");
+ if (pubsub == null) {
+ return null;
+ }
+ final Element items = pubsub.findChild("items");
+ if (items == null) {
+ return null;
+ }
+ return super.avatarData(items);
+ }
+
+ public Element getItem(final IqPacket packet) {
+ final Element pubsub = packet.findChild("pubsub",
+ "http://jabber.org/protocol/pubsub");
+ if (pubsub == null) {
+ return null;
+ }
+ final Element items = pubsub.findChild("items");
+ if (items == null) {
+ return null;
+ }
+ return items.findChild("item");
+ }
+
+ @NonNull
+ public Set<Integer> deviceIds(final Element item) {
+ Set<Integer> deviceIds = new HashSet<>();
+ if (item != null) {
+ final Element list = item.findChild("list");
+ if (list != null) {
+ for (Element device : list.getChildren()) {
+ if (!device.getName().equals("device")) {
+ continue;
+ }
+ try {
+ Integer id = Integer.valueOf(device.getAttribute("id"));
+ deviceIds.add(id);
+ } catch (NumberFormatException e) {
+ Log.e(Config.LOGTAG, AxolotlService.LOGPREFIX+" : "+"Encountered invalid <device> node in PEP ("+e.getMessage()+"):" + device.toString()+ ", skipping...");
+ continue;
+ }
+ }
+ }
+ }
+ return deviceIds;
+ }
+
+ public Integer signedPreKeyId(final Element bundle) {
+ final Element signedPreKeyPublic = bundle.findChild("signedPreKeyPublic");
+ if(signedPreKeyPublic == null) {
+ return null;
+ }
+ return Integer.valueOf(signedPreKeyPublic.getAttribute("signedPreKeyId"));
+ }
+
+ public ECPublicKey signedPreKeyPublic(final Element bundle) {
+ ECPublicKey publicKey = null;
+ final Element signedPreKeyPublic = bundle.findChild("signedPreKeyPublic");
+ if(signedPreKeyPublic == null) {
+ return null;
+ }
+ try {
+ publicKey = Curve.decodePoint(Base64.decode(signedPreKeyPublic.getContent(),Base64.DEFAULT), 0);
+ } catch (Throwable e) {
+ Log.e(Config.LOGTAG, AxolotlService.LOGPREFIX+" : "+"Invalid signedPreKeyPublic in PEP: " + e.getMessage());
+ }
+ return publicKey;
+ }
+
+ public byte[] signedPreKeySignature(final Element bundle) {
+ final Element signedPreKeySignature = bundle.findChild("signedPreKeySignature");
+ if(signedPreKeySignature == null) {
+ return null;
+ }
+ try {
+ return Base64.decode(signedPreKeySignature.getContent(), Base64.DEFAULT);
+ } catch (Throwable e) {
+ Log.e(Config.LOGTAG, AxolotlService.LOGPREFIX+" : Invalid base64 in signedPreKeySignature");
+ return null;
+ }
+ }
+
+ public IdentityKey identityKey(final Element bundle) {
+ IdentityKey identityKey = null;
+ final Element identityKeyElement = bundle.findChild("identityKey");
+ if(identityKeyElement == null) {
+ return null;
+ }
+ try {
+ identityKey = new IdentityKey(Base64.decode(identityKeyElement.getContent(), Base64.DEFAULT), 0);
+ } catch (Throwable e) {
+ Log.e(Config.LOGTAG, AxolotlService.LOGPREFIX+" : "+"Invalid identityKey in PEP: "+e.getMessage());
+ }
+ return identityKey;
+ }
+
+ public Map<Integer, ECPublicKey> preKeyPublics(final IqPacket packet) {
+ Map<Integer, ECPublicKey> preKeyRecords = new HashMap<>();
+ Element item = getItem(packet);
+ if (item == null) {
+ Log.d(Config.LOGTAG, AxolotlService.LOGPREFIX+" : "+"Couldn't find <item> in bundle IQ packet: " + packet);
+ return null;
+ }
+ final Element bundleElement = item.findChild("bundle");
+ if(bundleElement == null) {
+ return null;
+ }
+ final Element prekeysElement = bundleElement.findChild("prekeys");
+ if(prekeysElement == null) {
+ Log.d(Config.LOGTAG, AxolotlService.LOGPREFIX+" : "+"Couldn't find <prekeys> in bundle IQ packet: " + packet);
+ return null;
+ }
+ for(Element preKeyPublicElement : prekeysElement.getChildren()) {
+ if(!preKeyPublicElement.getName().equals("preKeyPublic")){
+ Log.d(Config.LOGTAG, AxolotlService.LOGPREFIX+" : "+"Encountered unexpected tag in prekeys list: " + preKeyPublicElement);
+ continue;
+ }
+ Integer preKeyId = Integer.valueOf(preKeyPublicElement.getAttribute("preKeyId"));
+ try {
+ ECPublicKey preKeyPublic = Curve.decodePoint(Base64.decode(preKeyPublicElement.getContent(), Base64.DEFAULT), 0);
+ preKeyRecords.put(preKeyId, preKeyPublic);
+ } catch (Throwable e) {
+ Log.e(Config.LOGTAG, AxolotlService.LOGPREFIX+" : "+"Invalid preKeyPublic (ID="+preKeyId+") in PEP: "+ e.getMessage()+", skipping...");
+ continue;
+ }
+ }
+ return preKeyRecords;
+ }
+
+ public Pair<X509Certificate[],byte[]> verification(final IqPacket packet) {
+ Element item = getItem(packet);
+ Element verification = item != null ? item.findChild("verification", AxolotlService.PEP_PREFIX) : null;
+ Element chain = verification != null ? verification.findChild("chain") : null;
+ Element signature = verification != null ? verification.findChild("signature") : null;
+ if (chain != null && signature != null) {
+ List<Element> certElements = chain.getChildren();
+ X509Certificate[] certificates = new X509Certificate[certElements.size()];
+ try {
+ CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
+ int i = 0;
+ for(Element cert : certElements) {
+ certificates[i] = (X509Certificate) certificateFactory.generateCertificate(new ByteArrayInputStream(Base64.decode(cert.getContent(),Base64.DEFAULT)));
+ ++i;
+ }
+ return new Pair<>(certificates,Base64.decode(signature.getContent(),Base64.DEFAULT));
+ } catch (CertificateException e) {
+ return null;
+ }
+ } else {
+ return null;
+ }
+ }
+
+ public PreKeyBundle bundle(final IqPacket bundle) {
+ Element bundleItem = getItem(bundle);
+ if(bundleItem == null) {
+ return null;
+ }
+ final Element bundleElement = bundleItem.findChild("bundle");
+ if(bundleElement == null) {
+ return null;
+ }
+ ECPublicKey signedPreKeyPublic = signedPreKeyPublic(bundleElement);
+ Integer signedPreKeyId = signedPreKeyId(bundleElement);
+ byte[] signedPreKeySignature = signedPreKeySignature(bundleElement);
+ IdentityKey identityKey = identityKey(bundleElement);
+ if(signedPreKeyPublic == null || identityKey == null) {
+ return null;
+ }
+
+ return new PreKeyBundle(0, 0, 0, null,
+ signedPreKeyId, signedPreKeyPublic, signedPreKeySignature, identityKey);
+ }
+
+ public List<PreKeyBundle> preKeys(final IqPacket preKeys) {
+ List<PreKeyBundle> bundles = new ArrayList<>();
+ Map<Integer, ECPublicKey> preKeyPublics = preKeyPublics(preKeys);
+ if ( preKeyPublics != null) {
+ for (Integer preKeyId : preKeyPublics.keySet()) {
+ ECPublicKey preKeyPublic = preKeyPublics.get(preKeyId);
+ bundles.add(new PreKeyBundle(0, 0, preKeyId, preKeyPublic,
+ 0, null, null, null));
+ }
+ }
+
+ return bundles;
+ }
+
+ @Override
+ public void onIqPacketReceived(final Account account, final IqPacket packet) {
+ if (packet.getType() == IqPacket.TYPE.ERROR || packet.getType() == IqPacket.TYPE.TIMEOUT) {
+ return;
+ } else if (packet.hasChild("query", Xmlns.ROSTER) && packet.fromServer(account)) {
+ final Element query = packet.findChild("query");
+ // If this is in response to a query for the whole roster:
+ if (packet.getType() == IqPacket.TYPE.RESULT) {
+ account.getRoster().markAllAsNotInRoster();
+ }
+ this.rosterItems(account, query);
+ } else if ((packet.hasChild("block", Xmlns.BLOCKING) || packet.hasChild("blocklist", Xmlns.BLOCKING)) &&
+ packet.fromServer(account)) {
+ // Block list or block push.
+ Logging.d(Config.LOGTAG, "Received blocklist update from server");
+ final Element blocklist = packet.findChild("blocklist", Xmlns.BLOCKING);
+ final Element block = packet.findChild("block", Xmlns.BLOCKING);
+ final Collection<Element> items = blocklist != null ? blocklist.getChildren() :
+ (block != null ? block.getChildren() : null);
+ // If this is a response to a blocklist query, clear the block list and replace with the new one.
+ // Otherwise, just update the existing blocklist.
+ if (packet.getType() == IqPacket.TYPE.RESULT) {
+ account.clearBlocklist();
+ account.getXmppConnection().getFeatures().setBlockListRequested(true);
+ }
+ if (items != null) {
+ final Collection<Jid> jids = new ArrayList<>(items.size());
+ // Create a collection of Jids from the packet
+ for (final Element item : items) {
+ if (item.getName().equals("item")) {
+ final Jid jid = item.getAttributeAsJid("jid");
+ if (jid != null) {
+ jids.add(jid);
+ }
+ }
+ }
+ account.getBlocklist().addAll(jids);
+ }
+ // Update the UI
+ mXmppConnectionService.updateBlocklistUi(OnUpdateBlocklist.Status.BLOCKED);
+ } else if (packet.hasChild("unblock", Xmlns.BLOCKING) &&
+ packet.fromServer(account) && packet.getType() == IqPacket.TYPE.SET) {
+ Logging.d(Config.LOGTAG, "Received unblock update from server");
+ final Collection<Element> items = packet.findChild("unblock", Xmlns.BLOCKING).getChildren();
+ if (items.size() == 0) {
+ // No children to unblock == unblock all
+ account.getBlocklist().clear();
+ } else {
+ final Collection<Jid> jids = new ArrayList<>(items.size());
+ for (final Element item : items) {
+ if (item.getName().equals("item")) {
+ final Jid jid = item.getAttributeAsJid("jid");
+ if (jid != null) {
+ jids.add(jid);
+ }
+ }
+ }
+ account.getBlocklist().removeAll(jids);
+ }
+ mXmppConnectionService.updateBlocklistUi(OnUpdateBlocklist.Status.UNBLOCKED);
+ } else if (packet.hasChild("open", "http://jabber.org/protocol/ibb")
+ || packet.hasChild("data", "http://jabber.org/protocol/ibb")) {
+ mXmppConnectionService.getJingleConnectionManager()
+ .deliverIbbPacket(account, packet);
+ } else if (packet.hasChild("query", "http://jabber.org/protocol/disco#info")) {
+ final IqPacket response = mXmppConnectionService.getIqGenerator().discoResponse(packet);
+ mXmppConnectionService.sendIqPacket(account, response, null);
+ } else if (packet.hasChild("query","jabber:iq:version")) {
+ final IqPacket response = mXmppConnectionService.getIqGenerator().versionResponse(packet);
+ mXmppConnectionService.sendIqPacket(account,response,null);
+ } else if (packet.hasChild("ping", "urn:xmpp:ping")) {
+ final IqPacket response = packet.generateResponse(IqPacket.TYPE.RESULT);
+ mXmppConnectionService.sendIqPacket(account, response, null);
+ } else {
+ if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
+ final IqPacket response = packet.generateResponse(IqPacket.TYPE.ERROR);
+ final Element error = response.addChild("error");
+ error.setAttribute("type", "cancel");
+ error.addChild("feature-not-implemented","urn:ietf:params:xml:ns:xmpp-stanzas");
+ account.getXmppConnection().sendIqPacket(response, null);
+ }
+ }
+ }
+
+}