Merge pull request #2451 from drwetter/fix_stupid_umaskerror_3.0

Bail out if user error bc of umask (3.0 branch)

Author: drwetter

testssl.sh

@@ -17555,7 +17555,9 @@ maketempf() {
           fi
           TEMPDIR=$(mktemp -d "$PWD/testssl.XXXXXX") || exit $ERR_FCREATE
      fi
-     TMPFILE=$TEMPDIR/tempfile.txt || exit $ERR_FCREATE
+     ls "$TEMPDIR/" 2>/dev/null || fatal "temporary directory needed not readable" $ERR_FCREATE
+     TMPFILE=$TEMPDIR/tempfile.txt
+     touch $TMPFILE 2>/dev/null || fatal "temporary directory needed not writeable" $ERR_FCREATE
      if [[ "$DEBUG" -eq 0 ]]; then
           ERRFILE="/dev/null"
      else