pipeline sasl2 directly after stream start
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parent
126e8ef08c
commit
32f9a58d9a
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@ -57,16 +57,14 @@ public class Account extends AbstractEntity implements AvatarService.Avatarable
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public static final String PINNED_CHANNEL_BINDING = "pinned_channel_binding";
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public static final int OPTION_USETLS = 0;
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public static final int OPTION_DISABLED = 1;
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public static final int OPTION_REGISTER = 2;
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public static final int OPTION_USECOMPRESSION = 3;
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public static final int OPTION_MAGIC_CREATE = 4;
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public static final int OPTION_REQUIRES_ACCESS_MODE_CHANGE = 5;
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public static final int OPTION_LOGGED_IN_SUCCESSFULLY = 6;
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public static final int OPTION_HTTP_UPLOAD_AVAILABLE = 7;
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public static final int OPTION_UNVERIFIED = 8;
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public static final int OPTION_FIXED_USERNAME = 9;
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public static final int OPTION_QUICKSTART_AVAILABLE = 10;
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private static final String KEY_PGP_SIGNATURE = "pgp_signature";
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private static final String KEY_PGP_ID = "pgp_id";
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@ -286,8 +286,6 @@ public class EditAccountActivity extends OmemoActivity implements OnAccountUpdat
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mAccount = new Account(jid.asBareJid(), password);
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mAccount.setPort(numericPort);
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mAccount.setHostname(hostname);
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mAccount.setOption(Account.OPTION_USETLS, true);
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mAccount.setOption(Account.OPTION_USECOMPRESSION, true);
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mAccount.setOption(Account.OPTION_REGISTER, registerNewAccount);
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xmppConnectionService.createAccount(mAccount);
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}
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@ -1,6 +1,7 @@
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package eu.siacs.conversations.xml;
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public final class Namespace {
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public static final String STREAMS = "http://etherx.jabber.org/streams";
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public static final String DISCO_ITEMS = "http://jabber.org/protocol/disco#items";
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public static final String DISCO_INFO = "http://jabber.org/protocol/disco#info";
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public static final String EXTERNAL_SERVICE_DISCOVERY = "urn:xmpp:extdisco:2";
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@ -58,15 +58,20 @@ public class TagWriter {
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throw new IOException("output stream was null");
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}
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outputStream.write("<?xml version='1.0'?>");
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outputStream.flush();
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}
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public synchronized void writeTag(Tag tag) throws IOException {
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public void writeTag(final Tag tag) throws IOException {
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writeTag(tag, true);
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}
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public synchronized void writeTag(final Tag tag, final boolean flush) throws IOException {
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if (outputStream == null) {
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throw new IOException("output stream was null");
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}
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outputStream.write(tag.toString());
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outputStream.flush();
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if (flush) {
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outputStream.flush();
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}
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}
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public synchronized void writeElement(Element element) throws IOException {
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@ -89,6 +89,7 @@ import eu.siacs.conversations.xml.Namespace;
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import eu.siacs.conversations.xml.Tag;
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import eu.siacs.conversations.xml.TagWriter;
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import eu.siacs.conversations.xml.XmlReader;
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import eu.siacs.conversations.xmpp.bind.Bind2;
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import eu.siacs.conversations.xmpp.forms.Data;
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import eu.siacs.conversations.xmpp.jingle.OnJinglePacketReceived;
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import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
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@ -155,6 +156,7 @@ public class XmppConnection implements Runnable {
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private TagWriter tagWriter = new TagWriter();
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private boolean shouldAuthenticate = true;
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private boolean inSmacksSession = false;
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private boolean quickStartInProgress = false;
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private boolean isBound = false;
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private Element streamFeatures;
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private String streamId = null;
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@ -270,11 +272,11 @@ public class XmppConnection implements Runnable {
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}
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Log.d(Config.LOGTAG, account.getJid().asBareJid().toString() + ": connecting");
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features.encryptionEnabled = false;
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inSmacksSession = false;
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isBound = false;
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this.inSmacksSession = false;
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this.quickStartInProgress = false;
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this.isBound = false;
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this.attempt++;
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this.verifiedHostname =
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null; // will be set if user entered hostname is being used or hostname was verified
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this.verifiedHostname = null; // will be set if user entered hostname is being used or hostname was verified
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// with dnssec
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try {
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Socket localSocket;
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@ -310,14 +312,14 @@ public class XmppConnection implements Runnable {
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try {
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startXmpp(localSocket);
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} catch (InterruptedException e) {
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} catch (final InterruptedException e) {
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Log.d(
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Config.LOGTAG,
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account.getJid().asBareJid()
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+ ": thread was interrupted before beginning stream");
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return;
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} catch (Exception e) {
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throw new IOException(e.getMessage());
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} catch (final Exception e) {
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throw new IOException("Could not start stream", e);
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}
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} else {
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final String domain = account.getServer();
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@ -477,7 +479,7 @@ public class XmppConnection implements Runnable {
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*
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* @return true if server returns with valid xmpp, false otherwise
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*/
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private boolean startXmpp(Socket socket) throws Exception {
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private boolean startXmpp(final Socket socket) throws Exception {
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if (Thread.currentThread().isInterrupted()) {
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throw new InterruptedException();
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}
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@ -490,15 +492,22 @@ public class XmppConnection implements Runnable {
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tagWriter.setOutputStream(socket.getOutputStream());
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tagReader.setInputStream(socket.getInputStream());
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tagWriter.beginDocument();
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sendStartStream();
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final boolean quickStart;
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if (socket instanceof SSLSocket) {
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SSLSocketHelper.log(account, (SSLSocket) socket);
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quickStart = establishStream(true);
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} else {
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quickStart = establishStream(false);
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}
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final Tag tag = tagReader.readTag();
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if (Thread.currentThread().isInterrupted()) {
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throw new InterruptedException();
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}
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if (socket instanceof SSLSocket) {
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SSLSocketHelper.log(account, (SSLSocket) socket);
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final boolean success = tag != null && tag.isStart("stream", Namespace.STREAMS);
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if (success && quickStart) {
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this.quickStartInProgress = true;
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}
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return tag != null && tag.isStart("stream");
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return success;
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}
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private SSLSocketFactory getSSLSocketFactory()
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@ -761,11 +770,12 @@ public class XmppConnection implements Runnable {
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sendPostBindInitialization(streamManagementEnabled != null, carbonsEnabled != null);
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}
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}
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this.quickStartInProgress = false;
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if (version == SaslMechanism.Version.SASL) {
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tagReader.reset();
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sendStartStream();
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sendStartStream(true);
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final Tag tag = tagReader.readTag();
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if (tag != null && tag.isStart("stream")) {
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if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
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processStream();
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return true;
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} else {
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@ -1119,11 +1129,14 @@ public class XmppConnection implements Runnable {
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final SSLSocket sslSocket = upgradeSocketToTls(socket);
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tagReader.setInputStream(sslSocket.getInputStream());
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tagWriter.setOutputStream(sslSocket.getOutputStream());
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sendStartStream();
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Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": TLS connection established");
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final boolean quickStart = establishStream(true);
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if (quickStart) {
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this.quickStartInProgress = true;
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}
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features.encryptionEnabled = true;
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final Tag tag = tagReader.readTag();
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if (tag != null && tag.isStart("stream")) {
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if (tag != null && tag.isStart("stream", Namespace.STREAMS)) {
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SSLSocketHelper.log(account, sslSocket);
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processStream();
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} else {
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@ -1170,7 +1183,13 @@ public class XmppConnection implements Runnable {
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final boolean isSecure =
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features.encryptionEnabled || Config.ALLOW_NON_TLS_CONNECTIONS || account.isOnion();
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final boolean needsBinding = !isBound && !account.isOptionSet(Account.OPTION_REGISTER);
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if (this.streamFeatures.hasChild("starttls", Namespace.TLS)
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if (this.quickStartInProgress) {
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Log.d(
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Config.LOGTAG,
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account.getJid().asBareJid()
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+ ": quick start in progress. ignoring features: "
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+ XmlHelper.printElementNames(this.streamFeatures));
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} else if (this.streamFeatures.hasChild("starttls", Namespace.TLS)
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&& !features.encryptionEnabled) {
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sendStartTLS();
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} else if (this.streamFeatures.hasChild("register", Namespace.REGISTER_STREAM_FEATURE)
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@ -1238,6 +1257,7 @@ public class XmppConnection implements Runnable {
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} else {
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authElement = this.streamFeatures.findChild("authentication", Namespace.SASL_2);
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}
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//TODO externalize
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final Collection<String> mechanisms =
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Collections2.transform(
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Collections2.filter(
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@ -1261,6 +1281,8 @@ public class XmppConnection implements Runnable {
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final SaslMechanism.Factory factory = new SaslMechanism.Factory(account);
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this.saslMechanism = factory.of(mechanisms, channelBindings);
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//TODO externalize checks
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if (saslMechanism == null) {
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Log.d(
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Config.LOGTAG,
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@ -1282,6 +1304,7 @@ public class XmppConnection implements Runnable {
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+ "). Possible downgrade attack?");
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throw new StateChangingException(Account.State.DOWNGRADE_ATTACK);
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}
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final boolean quickStartAvailable;
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final String firstMessage = saslMechanism.getClientFirstMessage();
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final Element authenticate;
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if (version == SaslMechanism.Version.SASL) {
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@ -1289,15 +1312,24 @@ public class XmppConnection implements Runnable {
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if (!Strings.isNullOrEmpty(firstMessage)) {
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authenticate.setContent(firstMessage);
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}
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quickStartAvailable = false;
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} else if (version == SaslMechanism.Version.SASL_2) {
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final Element inline = authElement.findChild("inline", Namespace.SASL_2);
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final boolean sm = inline != null && inline.hasChild("sm", "urn:xmpp:sm:3");
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final Collection<String> bindFeatures = bindFeatures(inline);
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final Collection<String> bindFeatures = Bind2.features(inline);
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quickStartAvailable =
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sm
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&& bindFeatures != null
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&& bindFeatures.containsAll(Bind2.QUICKSTART_FEATURES);
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authenticate = generateAuthenticationRequest(firstMessage, bindFeatures, sm);
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} else {
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throw new AssertionError("Missing implementation for " + version);
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}
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if (account.setOption(Account.OPTION_QUICKSTART_AVAILABLE, quickStartAvailable)) {
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mXmppConnectionService.updateAccount(account);
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}
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Log.d(
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Config.LOGTAG,
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account.getJid().toString()
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@ -1309,19 +1341,8 @@ public class XmppConnection implements Runnable {
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tagWriter.writeElement(authenticate);
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}
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private static Collection<String> bindFeatures(final Element inline) {
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final Element inlineBind2 =
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inline != null ? inline.findChild("bind", Namespace.BIND2) : null;
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final Element inlineBind2Inline =
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inlineBind2 != null ? inlineBind2.findChild("inline", Namespace.BIND2) : null;
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if (inlineBind2 == null) {
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return null;
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}
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if (inlineBind2Inline == null) {
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return Collections.emptyList();
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}
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return Collections2.transform(
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inlineBind2Inline.getChildren(), c -> c == null ? null : c.getAttribute("var"));
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private Element generateAuthenticationRequest(final String firstMessage) {
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return generateAuthenticationRequest(firstMessage, Bind2.QUICKSTART_FEATURES, true);
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}
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private Element generateAuthenticationRequest(
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@ -1988,14 +2009,37 @@ public class XmppConnection implements Runnable {
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}
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}
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private void sendStartStream() throws IOException {
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private boolean establishStream(final boolean secureConnection) throws IOException {
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final SaslMechanism saslMechanism = account.getPinnedMechanism();
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if (secureConnection
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&& saslMechanism != null
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&& account.isOptionSet(Account.OPTION_QUICKSTART_AVAILABLE)) {
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this.saslMechanism = saslMechanism;
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final Element authenticate =
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generateAuthenticationRequest(saslMechanism.getClientFirstMessage());
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authenticate.setAttribute("mechanism", saslMechanism.getMechanism());
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sendStartStream(false);
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tagWriter.writeElement(authenticate);
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Log.d(
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Config.LOGTAG,
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account.getJid().toString()
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+ ": quick start with "
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+ saslMechanism.getMechanism());
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return true;
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} else {
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sendStartStream(true);
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return false;
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}
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}
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private void sendStartStream(final boolean flush) throws IOException {
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final Tag stream = Tag.start("stream:stream");
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stream.setAttribute("to", account.getServer());
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stream.setAttribute("version", "1.0");
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stream.setAttribute("xml:lang", LocalizedContent.STREAM_LANGUAGE);
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stream.setAttribute("xmlns", "jabber:client");
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stream.setAttribute("xmlns:stream", "http://etherx.jabber.org/streams");
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tagWriter.writeTag(stream);
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stream.setAttribute("xmlns:stream", Namespace.STREAMS);
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tagWriter.writeTag(stream, flush);
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}
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private String createNewResource() {
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33
src/main/java/eu/siacs/conversations/xmpp/bind/Bind2.java
Normal file
33
src/main/java/eu/siacs/conversations/xmpp/bind/Bind2.java
Normal file
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@ -0,0 +1,33 @@
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package eu.siacs.conversations.xmpp.bind;
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import com.google.common.collect.Collections2;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Collections;
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import eu.siacs.conversations.xml.Element;
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import eu.siacs.conversations.xml.Namespace;
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public class Bind2 {
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public static final Collection<String> QUICKSTART_FEATURES = Arrays.asList(
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Namespace.CARBONS,
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Namespace.STREAM_MANAGEMENT
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);
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public static Collection<String> features(final Element inline) {
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final Element inlineBind2 =
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inline != null ? inline.findChild("bind", Namespace.BIND2) : null;
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final Element inlineBind2Inline =
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inlineBind2 != null ? inlineBind2.findChild("inline", Namespace.BIND2) : null;
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if (inlineBind2 == null) {
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return null;
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}
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if (inlineBind2Inline == null) {
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return Collections.emptyList();
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}
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return Collections2.transform(
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inlineBind2Inline.getChildren(), c -> c == null ? null : c.getAttribute("var"));
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}
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}
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