1 files changed, 45 insertions, 40 deletions

diff --git a/src/main/java/eu/siacs/conversations/crypto/XmppDomainVerifier.java b/src/main/java/eu/siacs/conversations/crypto/XmppDomainVerifier.java
index 47d4b459d..1fca865ed 100644
--- a/src/main/java/eu/siacs/conversations/crypto/XmppDomainVerifier.java
+++ b/src/main/java/eu/siacs/conversations/crypto/XmppDomainVerifier.java
@@ -1,6 +1,7 @@
 package eu.siacs.conversations.crypto;
 
 import android.util.Log;
+import android.util.Pair;
 
 import org.bouncycastle.asn1.ASN1Primitive;
 import org.bouncycastle.asn1.DERIA5String;
@@ -25,7 +26,7 @@ import javax.net.ssl.SSLSession;
 
 public class XmppDomainVerifier implements HostnameVerifier {
 
-	private final String LOGTAG = "XmppDomainVerifier";
+	private static final String LOGTAG = "XmppDomainVerifier";
 
 	private final String SRVName = "1.3.6.1.5.5.7.8.7";
 	private final String xmppAddr = "1.3.6.1.5.5.7.8.5";
@@ -43,41 +44,21 @@ public class XmppDomainVerifier implements HostnameVerifier {
 			List<String> srvNames = new ArrayList<>();
 			List<String> domains = new ArrayList<>();
 			if (alternativeNames != null) {
-				for(List<?> san : alternativeNames) {
+				for (List<?> san : alternativeNames) {
 					Integer type = (Integer) san.get(0);
 					if (type == 0) {
-						try {
-							ASN1Primitive asn1Primitive = ASN1Primitive.fromByteArray((byte[]) san.get(1));
-							if (asn1Primitive instanceof  DERTaggedObject) {
-								ASN1Primitive inner = ((DERTaggedObject) asn1Primitive).getObject();
-								if (inner instanceof  DLSequence) {
-									DLSequence sequence = (DLSequence) inner;
-									if (sequence.size() >= 2 && sequence.getObjectAt(1) instanceof DERTaggedObject) {
-										String oid = sequence.getObjectAt(0).toString();
-										ASN1Primitive value  = ((DERTaggedObject) sequence.getObjectAt(1)).getObject();
-										switch (oid) {
-											case xmppAddr:
-												if (value instanceof DERUTF8String) {
-													xmppAddrs.add(((DERUTF8String) value).getString());
-												} else if (value instanceof DERIA5String) {
-													xmppAddrs.add(((DERIA5String) value).getString());
-												}
-												break;
-											case SRVName:
-												if (value instanceof DERUTF8String) {
-													srvNames.add(((DERUTF8String) value).getString());
-												} else if (value instanceof DERIA5String) {
-													srvNames.add(((DERIA5String) value).getString());
-												}
-												break;
-											default:
-												Log.d(LOGTAG,"value was of type:"+value.getClass().getName()+ " oid was:"+oid);
-										}
-									}
-								}
+						Pair<String, String> otherName = parseOtherName((byte[]) san.get(1));
+						if (otherName != null) {
+							switch (otherName.first) {
+								case SRVName:
+									srvNames.add(otherName.second);
+									break;
+								case xmppAddr:
+									xmppAddrs.add(otherName.second);
+									break;
+								default:
+									Log.d(LOGTAG, "oid: " + otherName.first + " value: " + otherName.second);
 							}
-						} catch (IOException e) {
-							//ignored
 						}
 					} else if (type == 2) {
 						Object value = san.get(1);
@@ -90,29 +71,53 @@ public class XmppDomainVerifier implements HostnameVerifier {
 			if (srvNames.size() == 0 && xmppAddrs.size() == 0 && domains.size() == 0) {
 				X500Name x500name = new JcaX509CertificateHolder(certificate).getSubject();
 				RDN[] rdns = x500name.getRDNs(BCStyle.CN);
-				for(int i = 0; i < rdns.length; ++i) {
+				for (int i = 0; i < rdns.length; ++i) {
 					domains.add(IETFUtils.valueToString(x500name.getRDNs(BCStyle.CN)[i].getFirst().getValue()));
 				}
 			}
 			Log.d(LOGTAG, "searching for " + domain + " in srvNames: " + srvNames + " xmppAddrs: " + xmppAddrs + " domains:" + domains);
-			return xmppAddrs.contains(domain) || srvNames.contains("_xmpp-client."+domain) || matchDomain(domain, domains);
+			return xmppAddrs.contains(domain) || srvNames.contains("_xmpp-client." + domain) || matchDomain(domain, domains);
 		} catch (Exception e) {
 			return false;
 		}
 	}
 
-	private boolean matchDomain(String needle, List<String> haystack) {
-		for(String entry : haystack) {
+	private static Pair<String, String> parseOtherName(byte[] otherName) {
+		try {
+			ASN1Primitive asn1Primitive = ASN1Primitive.fromByteArray(otherName);
+			if (asn1Primitive instanceof DERTaggedObject) {
+				ASN1Primitive inner = ((DERTaggedObject) asn1Primitive).getObject();
+				if (inner instanceof DLSequence) {
+					DLSequence sequence = (DLSequence) inner;
+					if (sequence.size() >= 2 && sequence.getObjectAt(1) instanceof DERTaggedObject) {
+						String oid = sequence.getObjectAt(0).toString();
+						ASN1Primitive value = ((DERTaggedObject) sequence.getObjectAt(1)).getObject();
+						if (value instanceof DERUTF8String) {
+							return new Pair<>(oid, ((DERUTF8String) value).getString());
+						} else if (value instanceof DERIA5String) {
+							return new Pair<>(oid, ((DERIA5String) value).getString());
+						}
+					}
+				}
+			}
+			return null;
+		} catch (IOException e) {
+			return null;
+		}
+	}
+
+	private static boolean matchDomain(String needle, List<String> haystack) {
+		for (String entry : haystack) {
 			if (entry.startsWith("*.")) {
 				int i = needle.indexOf('.');
-				Log.d(LOGTAG,"comparing "+needle.substring(i)+ " and "+entry.substring(1));
+				Log.d(LOGTAG, "comparing " + needle.substring(i) + " and " + entry.substring(1));
 				if (i != -1 && needle.substring(i).equals(entry.substring(1))) {
-					Log.d(LOGTAG,"domain "+needle+" matched "+entry);
+					Log.d(LOGTAG, "domain " + needle + " matched " + entry);
 					return true;
 				}
 			} else {
 				if (entry.equals(needle)) {
-					Log.d(LOGTAG,"domain "+needle+" matched "+entry);
+					Log.d(LOGTAG, "domain " + needle + " matched " + entry);
 					return true;
 				}
 			}