diff options
Diffstat (limited to '')
4 files changed, 257 insertions, 299 deletions
diff --git a/src/main/java/de/pixart/messenger/utils/AndroidUsingLinkProperties.java b/src/main/java/de/pixart/messenger/utils/AndroidUsingLinkProperties.java new file mode 100644 index 000000000..b201b354b --- /dev/null +++ b/src/main/java/de/pixart/messenger/utils/AndroidUsingLinkProperties.java @@ -0,0 +1,76 @@ +package de.pixart.messenger.utils; + +import android.annotation.TargetApi; +import android.content.Context; +import android.net.ConnectivityManager; +import android.net.LinkProperties; +import android.net.Network; +import android.net.RouteInfo; +import android.os.Build; + +import java.net.Inet4Address; +import java.net.InetAddress; +import java.util.ArrayList; +import java.util.List; + +import de.measite.minidns.dnsserverlookup.AbstractDNSServerLookupMechanism; +import de.measite.minidns.dnsserverlookup.AndroidUsingExec; + +public class AndroidUsingLinkProperties extends AbstractDNSServerLookupMechanism { + + private final Context context; + + protected AndroidUsingLinkProperties(Context context) { + super(AndroidUsingLinkProperties.class.getSimpleName(), AndroidUsingExec.PRIORITY - 1); + this.context = context; + } + + @Override + public boolean isAvailable() { + return Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP; + } + + @Override + @TargetApi(21) + public String[] getDnsServerAddresses() { + ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); + Network[] networks = connectivityManager == null ? null : connectivityManager.getAllNetworks(); + if (networks == null) { + return new String[0]; + } + List<String> servers = new ArrayList<>(); + for (Network network : networks) { + LinkProperties linkProperties = connectivityManager.getLinkProperties(network); + if (linkProperties != null) { + if (hasDefaultRoute(linkProperties)) { + servers.addAll(0, getIPv4First(linkProperties.getDnsServers())); + } else { + servers.addAll(getIPv4First(linkProperties.getDnsServers())); + } + } + } + return servers.toArray(new String[servers.size()]); + } + + private static List<String> getIPv4First(List<InetAddress> in) { + List<String> out = new ArrayList<>(); + for (InetAddress addr : in) { + if (addr instanceof Inet4Address) { + out.add(0, addr.toString()); + } else { + out.add(addr.toString()); + } + } + return out; + } + + @TargetApi(Build.VERSION_CODES.LOLLIPOP) + private static boolean hasDefaultRoute(LinkProperties linkProperties) { + for (RouteInfo route : linkProperties.getRoutes()) { + if (route.isDefaultRoute()) { + return true; + } + } + return false; + } +}
\ No newline at end of file diff --git a/src/main/java/de/pixart/messenger/utils/DNSHelper.java b/src/main/java/de/pixart/messenger/utils/DNSHelper.java deleted file mode 100644 index 70f600375..000000000 --- a/src/main/java/de/pixart/messenger/utils/DNSHelper.java +++ /dev/null @@ -1,299 +0,0 @@ -package de.pixart.messenger.utils; - -import android.annotation.TargetApi; -import android.content.Context; -import android.net.ConnectivityManager; -import android.net.LinkProperties; -import android.net.Network; -import android.net.RouteInfo; -import android.os.Build; -import android.os.Bundle; -import android.os.Parcelable; -import android.util.Log; - -import java.io.IOException; -import java.net.Inet4Address; -import java.net.InetAddress; -import java.net.SocketTimeoutException; -import java.net.UnknownHostException; -import java.util.ArrayList; -import java.util.Collections; -import java.util.List; -import java.util.Locale; -import java.util.Map; -import java.util.Random; -import java.util.TreeMap; -import java.util.regex.Pattern; - -import de.measite.minidns.Client; -import de.measite.minidns.DNSMessage; -import de.measite.minidns.Record; -import de.measite.minidns.Record.CLASS; -import de.measite.minidns.Record.TYPE; -import de.measite.minidns.record.A; -import de.measite.minidns.record.AAAA; -import de.measite.minidns.record.Data; -import de.measite.minidns.record.SRV; -import de.measite.minidns.util.NameUtil; -import de.pixart.messenger.Config; -import de.pixart.messenger.xmpp.jid.Jid; - -public class DNSHelper { - - public static final Pattern PATTERN_IPV4 = Pattern.compile("\\A(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z"); - public static final Pattern PATTERN_IPV6_HEX4DECCOMPRESSED = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?) ::((?:[0-9A-Fa-f]{1,4}:)*)(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z"); - public static final Pattern PATTERN_IPV6_6HEX4DEC = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}:){6,6})(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z"); - public static final Pattern PATTERN_IPV6_HEXCOMPRESSED = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)::((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)\\z"); - public static final Pattern PATTERN_IPV6 = Pattern.compile("\\A(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}\\z"); - - protected static Client client = new Client(); - - protected static Context context; - - public static Bundle getSRVRecord(final Jid jid, Context context) throws IOException { - DNSHelper.context = context; - final String host = jid.getDomainpart(); - final List<InetAddress> servers = Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP ? getDnsServers(context) : getDnsServersPreLollipop(); - Bundle b = new Bundle(); - boolean interrupted = false; - for (InetAddress server : servers) { - if (Thread.currentThread().isInterrupted()) { - interrupted = true; - break; - } - b = queryDNS(host, server); - if (b.containsKey("values")) { - return b; - } - } - if (!b.containsKey("values")) { - Log.d(Config.LOGTAG, (interrupted ? "Thread interrupted during DNS query" : "all dns queries failed") + ". provide fallback A record"); - ArrayList<Parcelable> values = new ArrayList<>(); - values.add(createNamePortBundle(host, 5222, false)); - b.putParcelableArrayList("values", values); - } - return b; - } - - @TargetApi(21) - private static List<InetAddress> getDnsServers(Context context) { - List<InetAddress> servers = new ArrayList<>(); - ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); - Network[] networks = connectivityManager == null ? null : connectivityManager.getAllNetworks(); - if (networks == null) { - return getDnsServersPreLollipop(); - } - for (int i = 0; i < networks.length; ++i) { - LinkProperties linkProperties = connectivityManager.getLinkProperties(networks[i]); - if (linkProperties != null) { - if (hasDefaultRoute(linkProperties)) { - servers.addAll(0, getIPv4First(linkProperties.getDnsServers())); - } else { - servers.addAll(getIPv4First(linkProperties.getDnsServers())); - } - } - } - if (servers.size() > 0) { - Log.d(Config.LOGTAG, "used lollipop variant to discover dns servers in " + networks.length + " networks"); - } - return servers.size() > 0 ? servers : getDnsServersPreLollipop(); - } - - private static List<InetAddress> getIPv4First(List<InetAddress> in) { - List<InetAddress> out = new ArrayList<>(); - for (InetAddress addr : in) { - if (addr instanceof Inet4Address) { - out.add(0, addr); - } else { - out.add(addr); - } - } - return out; - } - - @TargetApi(Build.VERSION_CODES.LOLLIPOP) - private static boolean hasDefaultRoute(LinkProperties linkProperties) { - for (RouteInfo route : linkProperties.getRoutes()) { - if (route.isDefaultRoute()) { - return true; - } - } - return false; - } - - private static List<InetAddress> getDnsServersPreLollipop() { - List<InetAddress> servers = new ArrayList<>(); - String[] dns = client.findDNS(); - for (int i = 0; i < dns.length; ++i) { - try { - servers.add(InetAddress.getByName(dns[i])); - } catch (UnknownHostException e) { - //ignore - } - } - return servers; - } - - private static class TlsSrv { - private final SRV srv; - private final boolean tls; - - public TlsSrv(SRV srv, boolean tls) { - this.srv = srv; - this.tls = tls; - } - } - - 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 { - final DNSMessage message = client.query(qname, TYPE.SRV, CLASS.IN, dnsServer.getHostAddress()); - for (Record[] rrset : new Record[][]{message.getAnswers(), message.getAdditionalResourceRecords()}) { - for (Record rr : rrset) { - Data d = rr.getPayload(); - final String name = rr.getName() != null ? rr.getName().toLowerCase(Locale.US) : null; - if (d instanceof SRV && NameUtil.idnEquals(qname, name)) { - SRV srv = (SRV) d; - if (!priorities.containsKey(srv.getPriority())) { - priorities.put(srv.getPriority(), new ArrayList<TlsSrv>()); - } - priorities.get(srv.getPriority()).add(new TlsSrv(srv, tls)); - } else if (d instanceof SRV) { - Log.d(Config.LOGTAG, "found unrecognized SRV record with name: " + name); - } - if (d instanceof A) { - A a = (A) d; - if (!ips4.containsKey(name)) { - ips4.put(name, new ArrayList<String>()); - } - ips4.get(name).add(a.toString()); - } - if (d instanceof AAAA) { - AAAA aaaa = (AAAA) d; - if (!ips6.containsKey(name)) { - ips6.put(name, new ArrayList<String>()); - } - ips6.get(name).add("[" + aaaa.toString() + "]"); - } - } - } - } - - public static Bundle queryDNS(String host, InetAddress dnsServer) { - Bundle bundle = new Bundle(); - try { - client.setTimeout(Config.SOCKET_TIMEOUT * 1000); - final String qname = "_xmpp-client._tcp." + host.toLowerCase(Locale.US); - final String tlsQname = "_xmpps-client._tcp." + host.toLowerCase(Locale.US); - Log.d(Config.LOGTAG, "using dns server: " + dnsServer.getHostAddress() + " to look up " + host); - - final Map<Integer, List<TlsSrv>> priorities = new TreeMap<>(); - final Map<String, List<String>> ips4 = new TreeMap<>(); - final Map<String, List<String>> ips6 = new TreeMap<>(); - - fillSrvMaps(qname, dnsServer, priorities, ips4, ips6, false); - fillSrvMaps(tlsQname, dnsServer, priorities, ips4, ips6, true); - - final List<TlsSrv> result = new ArrayList<>(); - for (final List<TlsSrv> s : priorities.values()) { - result.addAll(s); - } - - final ArrayList<Bundle> values = new ArrayList<>(); - if (result.size() == 0) { - DNSMessage response; - try { - response = client.query(host, TYPE.A, CLASS.IN, dnsServer.getHostAddress()); - for (int i = 0; i < response.getAnswers().length; ++i) { - values.add(createNamePortBundle(host, 5222, response.getAnswers()[i].getPayload(), false)); - } - } catch (SocketTimeoutException e) { - Log.d(Config.LOGTAG, "ignoring timeout exception when querying A record on " + dnsServer.getHostAddress()); - } - try { - response = client.query(host, TYPE.AAAA, CLASS.IN, dnsServer.getHostAddress()); - for (int i = 0; i < response.getAnswers().length; ++i) { - values.add(createNamePortBundle(host, 5222, response.getAnswers()[i].getPayload(), false)); - } - } catch (SocketTimeoutException e) { - Log.d(Config.LOGTAG, "ignoring timeout exception when querying AAAA record on " + dnsServer.getHostAddress()); - } - values.add(createNamePortBundle(host, 5222, false)); - bundle.putParcelableArrayList("values", values); - return bundle; - } - for (final TlsSrv tlsSrv : result) { - final SRV srv = tlsSrv.srv; - final String name = srv.getName() != null ? srv.getName().toLowerCase(Locale.US) : null; - if (ips6.containsKey(name)) { - values.add(createNamePortBundle(name, srv.getPort(), ips6, tlsSrv.tls)); - } else { - try { - DNSMessage response = client.query(name, TYPE.AAAA, CLASS.IN, dnsServer.getHostAddress()); - for (int i = 0; i < response.getAnswers().length; ++i) { - values.add(createNamePortBundle(name, srv.getPort(), response.getAnswers()[i].getPayload(), tlsSrv.tls)); - } - } catch (SocketTimeoutException e) { - Log.d(Config.LOGTAG, "ignoring timeout exception when querying AAAA record on " + dnsServer.getHostAddress()); - } - } - if (ips4.containsKey(name)) { - values.add(createNamePortBundle(name, srv.getPort(), ips4, tlsSrv.tls)); - } else { - DNSMessage response = client.query(name, TYPE.A, CLASS.IN, dnsServer.getHostAddress()); - for (int i = 0; i < response.getAnswers().length; ++i) { - values.add(createNamePortBundle(name, srv.getPort(), response.getAnswers()[i].getPayload(), tlsSrv.tls)); - } - } - values.add(createNamePortBundle(name, srv.getPort(), tlsSrv.tls)); - } - bundle.putParcelableArrayList("values", values); - } catch (SocketTimeoutException e) { - bundle.putString("error", "timeout"); - } catch (Exception e) { - bundle.putString("error", "unhandled"); - } - return bundle; - } - - private static Bundle createNamePortBundle(String name, int port, final boolean tls) { - Bundle namePort = new Bundle(); - namePort.putString("name", name); - namePort.putBoolean("tls", tls); - namePort.putInt("port", port); - return namePort; - } - - private static Bundle createNamePortBundle(String name, int port, Map<String, List<String>> ips, final boolean tls) { - Bundle namePort = new Bundle(); - namePort.putString("name", name); - namePort.putBoolean("tls", tls); - namePort.putInt("port", port); - if (ips != null) { - List<String> ip = ips.get(name); - Collections.shuffle(ip, new Random()); - namePort.putString("ip", ip.get(0)); - } - return namePort; - } - - private static Bundle createNamePortBundle(String name, int port, Data data, final boolean tls) { - Bundle namePort = new Bundle(); - namePort.putString("name", name); - namePort.putBoolean("tls", tls); - namePort.putInt("port", port); - if (data instanceof A) { - namePort.putString("ip", data.toString()); - } else if (data instanceof AAAA) { - namePort.putString("ip", "[" + data.toString() + "]"); - } - return namePort; - } - - public static boolean isIp(final String server) { - return server != null && ( - PATTERN_IPV4.matcher(server).matches() - || PATTERN_IPV6.matcher(server).matches() - || PATTERN_IPV6_6HEX4DEC.matcher(server).matches() - || PATTERN_IPV6_HEX4DECCOMPRESSED.matcher(server).matches() - || PATTERN_IPV6_HEXCOMPRESSED.matcher(server).matches()); - } -} diff --git a/src/main/java/de/pixart/messenger/utils/IP.java b/src/main/java/de/pixart/messenger/utils/IP.java new file mode 100644 index 000000000..42f9ec553 --- /dev/null +++ b/src/main/java/de/pixart/messenger/utils/IP.java @@ -0,0 +1,22 @@ +package de.pixart.messenger.utils; + +import java.util.regex.Pattern; + +public class IP { + + private static final Pattern PATTERN_IPV4 = Pattern.compile("\\A(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z"); + private static final Pattern PATTERN_IPV6_HEX4DECCOMPRESSED = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?) ::((?:[0-9A-Fa-f]{1,4}:)*)(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z"); + private static final Pattern PATTERN_IPV6_6HEX4DEC = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}:){6,6})(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z"); + private static final Pattern PATTERN_IPV6_HEXCOMPRESSED = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)::((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)\\z"); + private static final Pattern PATTERN_IPV6 = Pattern.compile("\\A(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}\\z"); + + public static boolean matches(String server) { + return server != null && ( + PATTERN_IPV4.matcher(server).matches() + || PATTERN_IPV6.matcher(server).matches() + || PATTERN_IPV6_6HEX4DEC.matcher(server).matches() + || PATTERN_IPV6_HEX4DECCOMPRESSED.matcher(server).matches() + || PATTERN_IPV6_HEXCOMPRESSED.matcher(server).matches()); + } + +}
\ No newline at end of file diff --git a/src/main/java/de/pixart/messenger/utils/Resolver.java b/src/main/java/de/pixart/messenger/utils/Resolver.java new file mode 100644 index 000000000..a5bcad547 --- /dev/null +++ b/src/main/java/de/pixart/messenger/utils/Resolver.java @@ -0,0 +1,159 @@ +package de.pixart.messenger.utils; + +import android.content.Context; +import android.support.annotation.NonNull; +import android.util.Log; + +import java.io.IOException; +import java.net.InetAddress; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +import de.measite.minidns.DNSClient; +import de.measite.minidns.DNSName; +import de.measite.minidns.Question; +import de.measite.minidns.Record; +import de.measite.minidns.hla.DnssecResolverApi; +import de.measite.minidns.hla.ResolverResult; +import de.measite.minidns.record.A; +import de.measite.minidns.record.AAAA; +import de.measite.minidns.record.Data; +import de.measite.minidns.record.InternetAddressRR; +import de.measite.minidns.record.SRV; +import de.pixart.messenger.Config; + +public class Resolver { + + private static final String DIRECT_TLS_SERVICE = "_xmpps-client"; + private static final String STARTTLS_SERICE = "_xmpp-client"; + + public static void registerLookupMechanism(Context context) { + DNSClient.addDnsServerLookupMechanism(new AndroidUsingLinkProperties(context)); + } + + public static List<Result> resolve(String domain) { + List<Result> results = new ArrayList<>(); + try { + results.addAll(resolveSrv(domain, true)); + } catch (IOException e) { + //ignore + } + try { + results.addAll(resolveSrv(domain, false)); + } catch (IOException e) { + //ignore + } + if (results.size() == 0) { + results.add(Result.createDefault(domain)); + } + Collections.sort(results); + return results; + } + + private static List<Result> resolveSrv(String domain, final boolean directTls) throws IOException { + Question question = new Question((directTls ? DIRECT_TLS_SERVICE : STARTTLS_SERICE) + "._tcp." + domain, Record.TYPE.SRV); + ResolverResult<Data> result = DnssecResolverApi.INSTANCE.resolve(question); + List<Result> results = new ArrayList<>(); + for (Data record : result.getAnswersOrEmptySet()) { + if (record instanceof SRV) { + SRV srvRecord = (SRV) record; + boolean added = results.addAll(resolveIp(srvRecord, A.class, result.isAuthenticData(), directTls)); + added |= results.addAll(resolveIp(srvRecord, AAAA.class, result.isAuthenticData(), directTls)); + if (!added) { + Result resolverResult = Result.fromRecord(srvRecord, directTls); + resolverResult.authenticated = resolverResult.isAuthenticated(); + results.add(resolverResult); + } + } + } + return results; + } + + private static <D extends InternetAddressRR> List<Result> resolveIp(SRV srv, Class<D> type, boolean authenticated, boolean directTls) { + List<Result> list = new ArrayList<>(); + try { + ResolverResult<D> results = DnssecResolverApi.INSTANCE.resolve(srv.name, type); + for (D record : results.getAnswersOrEmptySet()) { + Result resolverResult = Result.fromRecord(srv, directTls); + resolverResult.authenticated = results.isAuthenticData() && authenticated; + resolverResult.ip = record.getInetAddress(); + list.add(resolverResult); + } + } catch (IOException e) { + Log.d(Config.LOGTAG, e.getMessage()); + //ignore. will add default record later + } + return list; + } + + public static class Result implements Comparable<Result> { + private InetAddress ip; + private DNSName hostname; + private int port = 5222; + private boolean directTls = false; + private boolean authenticated = false; + private int priority; + + public InetAddress getIp() { + return ip; + } + + public int getPort() { + return port; + } + + public DNSName getHostname() { + return hostname; + } + + public boolean isDirectTls() { + return directTls; + } + + public boolean isAuthenticated() { + return authenticated; + } + + @Override + public String toString() { + return "Result{" + + "ip='" + ip + '\'' + + ", hostame='" + hostname.toString() + '\'' + + ", port=" + port + + ", directTls=" + directTls + + ", authenticated=" + authenticated + + ", priority=" + priority + + '}'; + } + + @Override + public int compareTo(@NonNull Result result) { + if (result.priority == priority) { + if (directTls == result.directTls) { + return 0; + } else { + return directTls ? 1 : -1; + } + } else { + return priority - result.priority; + } + } + + public static Result fromRecord(SRV srv, boolean directTls) { + Result result = new Result(); + result.port = srv.port; + result.hostname = srv.name; + result.directTls = directTls; + result.priority = srv.priority; + return result; + } + + public static Result createDefault(String domain) { + Result result = new Result(); + result.port = 5222; + result.hostname = DNSName.from(domain); + return result; + } + } +}
\ No newline at end of file |