mirror of
https://github.com/moparisthebest/Conversations
synced 2024-11-28 03:32:15 -05:00
Implement XEP-0368: SRV records for XMPP over TLS
This commit is contained in:
parent
20ec9ff2c6
commit
217f6603c0
@ -19,6 +19,7 @@ import java.util.Collections;
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import java.util.List;
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import java.util.Random;
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import java.util.TreeMap;
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import java.util.Map;
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import java.util.regex.Pattern;
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import de.measite.minidns.Client;
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@ -57,7 +58,7 @@ public class DNSHelper {
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if (!b.containsKey("values")) {
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Log.d(Config.LOGTAG,"all dns queries failed. provide fallback A record");
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ArrayList<Parcelable> values = new ArrayList<>();
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values.add(createNamePortBundle(host,5222));
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values.add(createNamePortBundle(host, 5222, false));
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b.putParcelableArrayList("values",values);
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}
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return b;
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@ -96,27 +97,27 @@ public class DNSHelper {
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return servers;
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}
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public static Bundle queryDNS(String host, InetAddress dnsServer) {
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Bundle bundle = new Bundle();
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try {
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client.setTimeout(Config.PING_TIMEOUT * 1000);
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String qname = "_xmpp-client._tcp." + host;
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Log.d(Config.LOGTAG, "using dns server: " + dnsServer.getHostAddress() + " to look up " + host);
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DNSMessage message = client.query(qname, TYPE.SRV, CLASS.IN, dnsServer.getHostAddress());
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private static class TlsSrv {
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private final SRV srv;
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private final boolean tls;
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TreeMap<Integer, ArrayList<SRV>> priorities = new TreeMap<>();
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TreeMap<String, ArrayList<String>> ips4 = new TreeMap<>();
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TreeMap<String, ArrayList<String>> ips6 = new TreeMap<>();
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public TlsSrv(SRV srv, boolean tls) {
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this.srv = srv;
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this.tls = tls;
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}
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}
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private static void fillSrvMaps(final String qname, final InetAddress dnsServer, final Map<Integer, List<TlsSrv>> priorities, final Map<String, List<String>> ips4, final Map<String, List<String>> ips6, final boolean tls) throws IOException {
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final DNSMessage message = client.query(qname, TYPE.SRV, CLASS.IN, dnsServer.getHostAddress());
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for (Record[] rrset : new Record[][] { message.getAnswers(), message.getAdditionalResourceRecords() }) {
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for (Record rr : rrset) {
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Data d = rr.getPayload();
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if (d instanceof SRV && NameUtil.idnEquals(qname, rr.getName())) {
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SRV srv = (SRV) d;
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if (!priorities.containsKey(srv.getPriority())) {
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priorities.put(srv.getPriority(),new ArrayList<SRV>());
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priorities.put(srv.getPriority(),new ArrayList<TlsSrv>());
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}
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priorities.get(srv.getPriority()).add(srv);
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priorities.get(srv.getPriority()).add(new TlsSrv(srv, tls));
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}
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if (d instanceof A) {
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A a = (A) d;
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@ -134,19 +135,35 @@ public class DNSHelper {
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}
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}
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}
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}
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ArrayList<SRV> result = new ArrayList<>();
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for (ArrayList<SRV> s : priorities.values()) {
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public static Bundle queryDNS(String host, InetAddress dnsServer) {
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Bundle bundle = new Bundle();
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try {
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client.setTimeout(Config.PING_TIMEOUT * 1000);
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final String qname = "_xmpp-client._tcp." + host;
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final String tlsQname = "_xmpps-client._tcp." + host;
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Log.d(Config.LOGTAG, "using dns server: " + dnsServer.getHostAddress() + " to look up " + host);
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final Map<Integer, List<TlsSrv>> priorities = new TreeMap<>();
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final Map<String, List<String>> ips4 = new TreeMap<>();
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final Map<String, List<String>> ips6 = new TreeMap<>();
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fillSrvMaps(qname, dnsServer, priorities, ips4, ips6, false);
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fillSrvMaps(tlsQname, dnsServer, priorities, ips4, ips6, true);
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final List<TlsSrv> result = new ArrayList<>();
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for (final List<TlsSrv> s : priorities.values()) {
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result.addAll(s);
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}
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ArrayList<Bundle> values = new ArrayList<>();
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final ArrayList<Bundle> values = new ArrayList<>();
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if (result.size() == 0) {
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DNSMessage response;
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try {
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response = client.query(host, TYPE.A, CLASS.IN, dnsServer.getHostAddress());
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for (int i = 0; i < response.getAnswers().length; ++i) {
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values.add(createNamePortBundle(host, 5222, response.getAnswers()[i].getPayload()));
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values.add(createNamePortBundle(host, 5222, response.getAnswers()[i].getPayload(), false));
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}
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} catch (SocketTimeoutException e) {
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Log.d(Config.LOGTAG,"ignoring timeout exception when querying A record on "+dnsServer.getHostAddress());
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@ -154,37 +171,38 @@ public class DNSHelper {
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try {
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response = client.query(host, TYPE.AAAA, CLASS.IN, dnsServer.getHostAddress());
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for (int i = 0; i < response.getAnswers().length; ++i) {
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values.add(createNamePortBundle(host, 5222, response.getAnswers()[i].getPayload()));
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values.add(createNamePortBundle(host, 5222, response.getAnswers()[i].getPayload(), false));
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}
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} catch (SocketTimeoutException e) {
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Log.d(Config.LOGTAG,"ignoring timeout exception when querying AAAA record on "+dnsServer.getHostAddress());
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}
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values.add(createNamePortBundle(host,5222));
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values.add(createNamePortBundle(host, 5222, false));
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bundle.putParcelableArrayList("values", values);
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return bundle;
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}
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for (SRV srv : result) {
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for (final TlsSrv tlsSrv : result) {
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final SRV srv = tlsSrv.srv;
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if (ips6.containsKey(srv.getName())) {
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values.add(createNamePortBundle(srv.getName(),srv.getPort(),ips6));
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values.add(createNamePortBundle(srv.getName(),srv.getPort(),ips6, tlsSrv.tls));
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} else {
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try {
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DNSMessage response = client.query(srv.getName(), TYPE.AAAA, CLASS.IN, dnsServer.getHostAddress());
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for (int i = 0; i < response.getAnswers().length; ++i) {
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values.add(createNamePortBundle(srv.getName(), srv.getPort(), response.getAnswers()[i].getPayload()));
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values.add(createNamePortBundle(srv.getName(), srv.getPort(), response.getAnswers()[i].getPayload(), tlsSrv.tls));
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}
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} catch (SocketTimeoutException e) {
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Log.d(Config.LOGTAG,"ignoring timeout exception when querying AAAA record on "+dnsServer.getHostAddress());
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}
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}
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if (ips4.containsKey(srv.getName())) {
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values.add(createNamePortBundle(srv.getName(),srv.getPort(),ips4));
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values.add(createNamePortBundle(srv.getName(),srv.getPort(),ips4, tlsSrv.tls));
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} else {
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DNSMessage response = client.query(srv.getName(), TYPE.A, CLASS.IN, dnsServer.getHostAddress());
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for(int i = 0; i < response.getAnswers().length; ++i) {
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values.add(createNamePortBundle(srv.getName(),srv.getPort(),response.getAnswers()[i].getPayload()));
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values.add(createNamePortBundle(srv.getName(),srv.getPort(),response.getAnswers()[i].getPayload(), tlsSrv.tls));
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}
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}
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values.add(createNamePortBundle(srv.getName(), srv.getPort()));
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values.add(createNamePortBundle(srv.getName(), srv.getPort(), tlsSrv.tls));
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}
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bundle.putParcelableArrayList("values", values);
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} catch (SocketTimeoutException e) {
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@ -195,28 +213,31 @@ public class DNSHelper {
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return bundle;
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}
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private static Bundle createNamePortBundle(String name, int port) {
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private static Bundle createNamePortBundle(String name, int port, final boolean tls) {
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Bundle namePort = new Bundle();
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namePort.putString("name", name);
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namePort.putBoolean("tls", tls);
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namePort.putInt("port", port);
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return namePort;
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}
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private static Bundle createNamePortBundle(String name, int port, TreeMap<String, ArrayList<String>> ips) {
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private static Bundle createNamePortBundle(String name, int port, Map<String, List<String>> ips, final boolean tls) {
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Bundle namePort = new Bundle();
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namePort.putString("name", name);
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namePort.putBoolean("tls", tls);
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namePort.putInt("port", port);
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if (ips!=null) {
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ArrayList<String> ip = ips.get(name);
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List<String> ip = ips.get(name);
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Collections.shuffle(ip, new Random());
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namePort.putString("ip", ip.get(0));
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}
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return namePort;
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}
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private static Bundle createNamePortBundle(String name, int port, Data data) {
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private static Bundle createNamePortBundle(String name, int port, Data data, final boolean tls) {
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Bundle namePort = new Bundle();
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namePort.putString("name", name);
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namePort.putBoolean("tls", tls);
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namePort.putInt("port", port);
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if (data instanceof A) {
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namePort.putString("ip", data.toString());
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@ -20,7 +20,7 @@ import org.xmlpull.v1.XmlPullParserException;
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import java.io.ByteArrayInputStream;
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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 java.lang.reflect.Method;
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import java.math.BigInteger;
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import java.net.ConnectException;
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import java.net.IDN;
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@ -247,6 +247,7 @@ public class XmppConnection implements Runnable {
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}
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Log.d(Config.LOGTAG,account.getJid().toBareJid()+": connect to "+destination+" via TOR");
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socket = SocksSocketFactory.createSocketOverTor(destination,account.getPort());
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startXmpp();
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} else if (DNSHelper.isIp(account.getServer().toString())) {
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socket = new Socket();
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try {
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@ -254,6 +255,7 @@ public class XmppConnection implements Runnable {
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} catch (IOException e) {
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throw new UnknownHostException();
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}
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startXmpp();
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} else {
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final Bundle result = DNSHelper.getSRVRecord(account.getServer(), mXmppConnectionService);
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final ArrayList<Parcelable>values = result.getParcelableArrayList("values");
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@ -269,24 +271,46 @@ public class XmppConnection implements Runnable {
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}
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final int srvRecordPort = namePort.getInt("port");
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final String srvIpServer = namePort.getString("ip");
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// if tls is true, encryption is implied and must not be started
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features.encryptionEnabled = namePort.getBoolean("tls");
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final InetSocketAddress addr;
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if (srvIpServer != null) {
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addr = new InetSocketAddress(srvIpServer, srvRecordPort);
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Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
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+ ": using values from dns " + srvRecordServer
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+ "[" + srvIpServer + "]:" + srvRecordPort);
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+ "[" + srvIpServer + "]:" + srvRecordPort + " tls: " + features.encryptionEnabled);
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} else {
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addr = new InetSocketAddress(srvRecordServer, srvRecordPort);
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Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
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+ ": using values from dns "
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+ srvRecordServer + ":" + srvRecordPort);
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+ srvRecordServer + ":" + srvRecordPort + " tls: " + features.encryptionEnabled);
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}
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if (!features.encryptionEnabled) {
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socket = new Socket();
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socket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
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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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} else {
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final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
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socket = tlsFactoryVerifier.factory.createSocket();
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if (socket == null) {
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throw new IOException("could not initialize ssl socket");
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}
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setSSLSocketSecurity((SSLSocket) socket);
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this.setSNIHost(tlsFactoryVerifier.factory, (SSLSocket) socket, account.getServer().getDomainpart());
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this.setAlpnProtocol(tlsFactoryVerifier.factory, (SSLSocket) socket, "xmpp-client");
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socket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
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if (!tlsFactoryVerifier.verifier.verify(account.getServer().getDomainpart(), ((SSLSocket) socket).getSession())) {
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Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": TLS certificate verification failed");
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throw new SecurityException();
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}
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}
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if(startXmpp())
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break; // successfully connected to server that speaks xmpp
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} catch (final Throwable e) {
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Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage() +"("+e.getClass().getName()+")");
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if (!iterator.hasNext()) {
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@ -295,18 +319,7 @@ public class XmppConnection implements Runnable {
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}
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}
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}
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Tag nextTag;
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while ((nextTag = tagReader.readTag()) != null) {
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if (nextTag.isStart("stream")) {
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processStream();
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break;
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} else {
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throw new IOException("unknown tag on connect");
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}
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}
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if (socket.isConnected()) {
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socket.close();
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}
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} catch (final IncompatibleServerException e) {
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this.changeStatus(Account.State.INCOMPATIBLE_SERVER);
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} catch (final SecurityException e) {
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@ -338,6 +351,99 @@ public class XmppConnection implements Runnable {
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}
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}
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/**
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* Starts xmpp protocol, call after connecting to socket
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* @return true if server returns with valid xmpp, false otherwise
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* @throws IOException Unknown tag on connect
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* @throws XmlPullParserException Bad Xml
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* @throws NoSuchAlgorithmException Other error
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*/
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private boolean startXmpp() throws IOException, XmlPullParserException, NoSuchAlgorithmException {
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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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Tag nextTag;
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while ((nextTag = tagReader.readTag()) != null) {
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if (nextTag.isStart("stream")) {
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return true;
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} else {
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throw new IOException("unknown tag on connect");
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}
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}
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if (socket.isConnected()) {
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socket.close();
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}
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return false;
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}
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private void setSNIHost(final SSLSocketFactory factory, final SSLSocket socket, final String hostname) {
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if (factory instanceof android.net.SSLCertificateSocketFactory && android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN_MR1) {
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((android.net.SSLCertificateSocketFactory) factory).setHostname(socket, hostname);
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} else {
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try {
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socket.getClass().getMethod("setHostname", String.class).invoke(socket, hostname);
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} catch (Throwable e) {
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// ignore any error, we just can't set the hostname...
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}
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}
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}
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private void setAlpnProtocol(final SSLSocketFactory factory, final SSLSocket socket, final String protocol) {
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try {
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if (factory instanceof android.net.SSLCertificateSocketFactory && android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) {
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// can't call directly because of @hide?
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//((android.net.SSLCertificateSocketFactory)factory).setAlpnProtocols(new byte[][]{protocol.getBytes("UTF-8")});
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android.net.SSLCertificateSocketFactory.class.getMethod("setAlpnProtocols", byte[][].class).invoke(socket, new Object[]{new byte[][]{protocol.getBytes("UTF-8")}});
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} else {
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final Method method = socket.getClass().getMethod("setAlpnProtocols", byte[].class);
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// the concatenation of 8-bit, length prefixed protocol names, just one in our case...
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// http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-04#page-4
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final byte[] protocolUTF8Bytes = protocol.getBytes("UTF-8");
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final byte[] lengthPrefixedProtocols = new byte[protocolUTF8Bytes.length + 1];
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lengthPrefixedProtocols[0] = (byte) protocol.length(); // cannot be over 255 anyhow
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System.arraycopy(protocolUTF8Bytes, 0, lengthPrefixedProtocols, 1, protocolUTF8Bytes.length);
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method.invoke(socket, new Object[]{lengthPrefixedProtocols});
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}
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} catch (Throwable e) {
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// ignore any error, we just can't set the alpn protocol...
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}
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}
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private static class TlsFactoryVerifier {
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private final SSLSocketFactory factory;
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private final HostnameVerifier verifier;
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public TlsFactoryVerifier(final SSLSocketFactory factory, final HostnameVerifier verifier) throws IOException {
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this.factory = factory;
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this.verifier = verifier;
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if (factory == null || verifier == null) {
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throw new IOException("could not setup ssl");
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}
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}
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}
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private TlsFactoryVerifier getTlsFactoryVerifier() throws NoSuchAlgorithmException, KeyManagementException, IOException {
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final SSLContext sc = SSLContext.getInstance("TLS");
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MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
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KeyManager[] keyManager;
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if (account.getPrivateKeyAlias() != null && account.getPassword().isEmpty()) {
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keyManager = new KeyManager[]{mKeyManager};
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} else {
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keyManager = null;
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}
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sc.init(keyManager, new X509TrustManager[]{mInteractive ? trustManager : trustManager.getNonInteractive()}, mXmppConnectionService.getRNG());
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final SSLSocketFactory factory = sc.getSocketFactory();
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final HostnameVerifier verifier;
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if (mInteractive) {
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verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier());
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} else {
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verifier = trustManager.wrapHostnameVerifierNonInteractive(new XmppDomainVerifier());
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}
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return new TlsFactoryVerifier(factory, verifier);
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}
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@Override
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public void run() {
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try {
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@ -599,37 +705,7 @@ public class XmppConnection implements Runnable {
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tagWriter.writeTag(startTLS);
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}
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private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
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tagReader.readTag();
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try {
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final SSLContext sc = SSLContext.getInstance("TLS");
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MemorizingTrustManager trustManager = this.mXmppConnectionService.getMemorizingTrustManager();
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KeyManager[] keyManager;
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if (account.getPrivateKeyAlias() != null && account.getPassword().isEmpty()) {
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keyManager = new KeyManager[]{ mKeyManager };
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} else {
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keyManager = null;
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}
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sc.init(keyManager,new X509TrustManager[]{mInteractive ? trustManager : trustManager.getNonInteractive()},mXmppConnectionService.getRNG());
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final SSLSocketFactory factory = sc.getSocketFactory();
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final HostnameVerifier verifier;
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if (mInteractive) {
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verifier = trustManager.wrapHostnameVerifier(new XmppDomainVerifier());
|
||||
} else {
|
||||
verifier = trustManager.wrapHostnameVerifierNonInteractive(new XmppDomainVerifier());
|
||||
}
|
||||
final InetAddress address = socket == null ? null : socket.getInetAddress();
|
||||
|
||||
if (factory == null || address == null || verifier == null) {
|
||||
throw new IOException("could not setup ssl");
|
||||
}
|
||||
|
||||
final SSLSocket sslSocket = (SSLSocket) factory.createSocket(socket,address.getHostAddress(), socket.getPort(),true);
|
||||
|
||||
if (sslSocket == null) {
|
||||
throw new IOException("could not initialize ssl socket");
|
||||
}
|
||||
|
||||
private void setSSLSocketSecurity(final SSLSocket sslSocket) throws NoSuchAlgorithmException {
|
||||
final String[] supportProtocols;
|
||||
final Collection<String> supportedProtocols = new LinkedList<>(
|
||||
Arrays.asList(sslSocket.getSupportedProtocols()));
|
||||
@ -644,8 +720,27 @@ public class XmppConnection implements Runnable {
|
||||
if (cipherSuites.length > 0) {
|
||||
sslSocket.setEnabledCipherSuites(cipherSuites);
|
||||
}
|
||||
}
|
||||
|
||||
if (!verifier.verify(account.getServer().getDomainpart(),sslSocket.getSession())) {
|
||||
private void switchOverToTls(final Tag currentTag) throws XmlPullParserException, IOException {
|
||||
tagReader.readTag();
|
||||
try {
|
||||
final TlsFactoryVerifier tlsFactoryVerifier = getTlsFactoryVerifier();
|
||||
final InetAddress address = socket == null ? null : socket.getInetAddress();
|
||||
|
||||
if (address == null) {
|
||||
throw new IOException("could not setup ssl");
|
||||
}
|
||||
|
||||
final SSLSocket sslSocket = (SSLSocket) tlsFactoryVerifier.factory.createSocket(socket, address.getHostAddress(), socket.getPort(), true);
|
||||
|
||||
if (sslSocket == null) {
|
||||
throw new IOException("could not initialize ssl socket");
|
||||
}
|
||||
|
||||
setSSLSocketSecurity(sslSocket);
|
||||
|
||||
if (!tlsFactoryVerifier.verifier.verify(account.getServer().getDomainpart(), sslSocket.getSession())) {
|
||||
Log.d(Config.LOGTAG,account.getJid().toBareJid()+": TLS certificate verification failed");
|
||||
throw new SecurityException();
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user