public DNSLookupContinuation checkSPF()

in resolver/src/main/java/org/apache/james/jspf/terms/AMechanism.java [71:117]
37 lines of code
7 McCabe index (conditional complexity)

    	public DNSLookupContinuation checkSPF(SPFSession spfData) throws PermErrorException,
                TempErrorException, NeutralException, NoneException {
            // Get the right host.
            String host = expandHost(spfData);

            // get the ipAddress
            try {
                boolean validIPV4Address = Inet6Util.isValidIPV4Address(spfData.getIpAddress());
                spfData.setAttribute(ATTRIBUTE_AMECHANISM_IPV4CHECK, Boolean.valueOf(validIPV4Address));
                if (validIPV4Address) {

                    List<String> aRecords = getARecords(host);
                    if (aRecords == null) {
                        try {
                            DNSRequest request = new DNSRequest(host, DNSRequest.A);
                            return new DNSLookupContinuation(request, AMechanism.this);
                        } catch (NoneException e) {
                            return onDNSResponse(new DNSResponse(aRecords), spfData);
                        }
                    } else {
                        return onDNSResponse(new DNSResponse(aRecords), spfData);
                    }
         
                } else {
                    
                    List<String> aaaaRecords = getAAAARecords(host);
                    if (aaaaRecords == null) {
                        try {
                            DNSRequest request = new DNSRequest(host, DNSRequest.AAAA);
                            return new DNSLookupContinuation(request, AMechanism.this);
                        } catch (NoneException e) {
                            return onDNSResponse(new DNSResponse(aaaaRecords), spfData);
                        }
                    } else {
                        return onDNSResponse(new DNSResponse(aaaaRecords), spfData);
                    }

                }
            // PermError / TempError
            // TODO: Should we replace this with the "right" Exceptions ?
            } catch (Exception e) {
                LOGGER.debug("No valid ipAddress: ", e);
                throw new PermErrorException("No valid ipAddress: "
                        + spfData.getIpAddress());
            }
            
        }