diff options
Diffstat (limited to 'src/main/java/eu/siacs/conversations/parser')
3 files changed, 199 insertions, 6 deletions
diff --git a/src/main/java/eu/siacs/conversations/parser/AbstractParser.java b/src/main/java/eu/siacs/conversations/parser/AbstractParser.java index 24e93db1..18331796 100644 --- a/src/main/java/eu/siacs/conversations/parser/AbstractParser.java +++ b/src/main/java/eu/siacs/conversations/parser/AbstractParser.java @@ -11,7 +11,6 @@ import eu.siacs.conversations.entities.Contact; import eu.siacs.conversations.services.XmppConnectionService; import eu.siacs.conversations.xml.Element; import eu.siacs.conversations.xmpp.jid.Jid; -import eu.siacs.conversations.xmpp.stanzas.MessagePacket; public abstract class AbstractParser { diff --git a/src/main/java/eu/siacs/conversations/parser/IqParser.java b/src/main/java/eu/siacs/conversations/parser/IqParser.java index 6039d395..e74cb65c 100644 --- a/src/main/java/eu/siacs/conversations/parser/IqParser.java +++ b/src/main/java/eu/siacs/conversations/parser/IqParser.java @@ -1,11 +1,25 @@ package eu.siacs.conversations.parser; +import android.support.annotation.NonNull; +import android.util.Base64; import android.util.Log; +import org.whispersystems.libaxolotl.IdentityKey; +import org.whispersystems.libaxolotl.InvalidKeyException; +import org.whispersystems.libaxolotl.ecc.Curve; +import org.whispersystems.libaxolotl.ecc.ECPublicKey; +import org.whispersystems.libaxolotl.state.PreKeyBundle; + 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 eu.siacs.conversations.Config; +import eu.siacs.conversations.crypto.axolotl.AxolotlService; import eu.siacs.conversations.entities.Account; import eu.siacs.conversations.entities.Contact; import eu.siacs.conversations.services.XmppConnectionService; @@ -71,6 +85,155 @@ public class IqParser extends AbstractParser implements OnIqPacketReceived { 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 nvalid <device> node in PEP:" + 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 (InvalidKeyException 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; + } + return Base64.decode(signedPreKeySignature.getContent(),Base64.DEFAULT); + } + + 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 (InvalidKeyException 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 (InvalidKeyException e) { + Log.e(Config.LOGTAG, AxolotlService.LOGPREFIX+" : "+"Invalid preKeyPublic (ID="+preKeyId+") in PEP: "+ e.getMessage()+", skipping..."); + continue; + } + } + return preKeyRecords; + } + + 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.hasChild("query", Xmlns.ROSTER) && packet.fromServer(account)) { diff --git a/src/main/java/eu/siacs/conversations/parser/MessageParser.java b/src/main/java/eu/siacs/conversations/parser/MessageParser.java index d46ff195..38e0f98a 100644 --- a/src/main/java/eu/siacs/conversations/parser/MessageParser.java +++ b/src/main/java/eu/siacs/conversations/parser/MessageParser.java @@ -6,7 +6,11 @@ import android.util.Pair; import net.java.otr4j.session.Session; import net.java.otr4j.session.SessionStatus; +import java.util.Set; + import eu.siacs.conversations.Config; +import eu.siacs.conversations.crypto.axolotl.AxolotlService; +import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage; import eu.siacs.conversations.entities.Account; import eu.siacs.conversations.entities.Contact; import eu.siacs.conversations.entities.Conversation; @@ -94,6 +98,20 @@ public class MessageParser extends AbstractParser implements } } + private Message parseAxolotlChat(Element axolotlMessage, Jid from, String id, Conversation conversation, int status) { + Message finishedMessage = null; + AxolotlService service = conversation.getAccount().getAxolotlService(); + XmppAxolotlMessage xmppAxolotlMessage = new XmppAxolotlMessage(from.toBareJid(), axolotlMessage); + XmppAxolotlMessage.XmppAxolotlPlaintextMessage plaintextMessage = service.processReceiving(xmppAxolotlMessage); + if(plaintextMessage != null) { + finishedMessage = new Message(conversation, plaintextMessage.getPlaintext(), Message.ENCRYPTION_AXOLOTL, status); + finishedMessage.setAxolotlFingerprint(plaintextMessage.getFingerprint()); + Log.d(Config.LOGTAG, AxolotlService.getLogprefix(finishedMessage.getConversation().getAccount())+" Received Message with session fingerprint: "+plaintextMessage.getFingerprint()); + } + + return finishedMessage; + } + private class Invite { Jid jid; String password; @@ -170,6 +188,13 @@ public class MessageParser extends AbstractParser implements mXmppConnectionService.updateConversationUi(); mXmppConnectionService.updateAccountUi(); } + } else if (AxolotlService.PEP_DEVICE_LIST.equals(node)) { + Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Received PEP device list update from "+ from + ", processing..."); + Element item = items.findChild("item"); + Set<Integer> deviceIds = mXmppConnectionService.getIqParser().deviceIds(item); + AxolotlService axolotlService = account.getAxolotlService(); + axolotlService.registerDevices(from, deviceIds); + mXmppConnectionService.updateAccountUi(); } } @@ -232,8 +257,9 @@ public class MessageParser extends AbstractParser implements timestamp = AbstractParser.getTimestamp(packet, System.currentTimeMillis()); } final String body = packet.getBody(); - final String encrypted = packet.findChildContent("x", "jabber:x:encrypted"); final Element mucUserElement = packet.findChild("x","http://jabber.org/protocol/muc#user"); + final String pgpEncrypted = packet.findChildContent("x", "jabber:x:encrypted"); + final Element axolotlEncrypted = packet.findChild("axolotl_message", AxolotlService.PEP_PREFIX); int status; final Jid counterpart; final Jid to = packet.getTo(); @@ -261,11 +287,11 @@ public class MessageParser extends AbstractParser implements return; } - if (extractChatState(mXmppConnectionService.find(account,from), packet)) { + if (extractChatState(mXmppConnectionService.find(account, from), packet)) { mXmppConnectionService.updateConversationUi(); } - if ((body != null || encrypted != null) && !isMucStatusMessage) { + if ((body != null || pgpEncrypted != null || axolotlEncrypted != null) && !isMucStatusMessage) { Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, counterpart.toBareJid(), isTypeGroupChat); if (isTypeGroupChat) { if (counterpart.getResourcepart().equals(conversation.getMucOptions().getActualNick())) { @@ -294,8 +320,13 @@ public class MessageParser extends AbstractParser implements } else { message = new Message(conversation, body, Message.ENCRYPTION_NONE, status); } - } else if (encrypted != null) { - message = new Message(conversation, encrypted, Message.ENCRYPTION_PGP, status); + } else if (pgpEncrypted != null) { + message = new Message(conversation, pgpEncrypted, Message.ENCRYPTION_PGP, status); + } else if (axolotlEncrypted != null) { + message = parseAxolotlChat(axolotlEncrypted, from, remoteMsgId, conversation, status); + if (message == null) { + return; + } } else { message = new Message(conversation, body, Message.ENCRYPTION_NONE, status); } |