Mercury-IM/Smack
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[tcp] Add missing null check in resolveDomain()

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The method lookupHostAddress() returns null in case of an error, hence
we need to test if the returned value is null prior adding the endpoint.

Should fix the following NPE:

java.lang.NullPointerException:
  at org.jivesoftware.smack.tcp.XMPPTCPConnection.connectUsingConfiguration (XMPPTCPConnection.java:606)
  at org.jivesoftware.smack.tcp.XMPPTCPConnection.connectInternal (XMPPTCPConnection.java:846)
  at org.jivesoftware.smack.AbstractXMPPConnection.connect (AbstractXMPPConnection.java:530)
  at org.jivesoftware.smack.ReconnectionManager$2.run (ReconnectionManager.java:282)
  at java.lang.Thread.run (Thread.java:784)

Reported-by: Eng ChongMeng <cmeng.gm@gmail.com>
This commit is contained in:
Florian Schmaus 2020-11-14 12:44:42 +01:00
parent 59cf449799
commit c4228e072b
1 changed files with 4 additions and 2 deletions
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6
smack-tcp/src/main/java/org/jivesoftware/smack/tcp/rce/RemoteXmppTcpConnectionEndpoints.java
View file

@ -192,8 +192,10 @@ public class RemoteXmppTcpConnectionEndpoints {
for (SRV srv : sortedSrvRecords) {
List<InetAddress> targetInetAddresses = dnsResolver.lookupHostAddress(srv.target, lookupFailures, dnssecMode);
SrvXmppRemoteConnectionEndpoint endpoint = new SrvXmppRemoteConnectionEndpoint(srv, targetInetAddresses);
endpoints.add(endpoint);
if (targetInetAddresses != null) {
SrvXmppRemoteConnectionEndpoint endpoint = new SrvXmppRemoteConnectionEndpoint(srv, targetInetAddresses);
endpoints.add(endpoint);
}
}
} else {
LOGGER.info("Could not resolve DNS SRV resource records for " + srvDomain + ". Consider adding those.");