Index: ktelnetservice.cpp
===================================================================
RCS file: /home/kde/kdelibs/kio/misc/ktelnetservice.cpp,v
retrieving revision 1.7.2.1
diff -u -p -r1.7.2.1 ktelnetservice.cpp
--- kio/misc/ktelnetservice.cpp 18 Feb 2004 11:42:12 -0000      1.7.2.1
+++ kio/misc/ktelnetservice.cpp 13 May 2004 15:12:14 -0000
@@ -77,10 +77,19 @@ int main(int argc, char **argv)
               cmd << url.user();
       }

+        QString host;
        if (!url.host().isEmpty())
-           cmd << url.host(); // telnet://host
+           host = url.host(); // telnet://host
        else if (!url.path().isEmpty())
-           cmd << url.path(); // telnet:host
+           host = url.path(); // telnet:host
+
+        if (host.isEmpty() || host.startsWith("-"))
+        {
+            kdError() << "Invalid hostname " << host << endl;
+            return 2;
+        }
+
+        cmd << host;

       if (url.port()){
            if ( url.protocol() == "ssh" )

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