void initWhitelist()

in src/main/java/org/apache/sling/discovery/base/connectors/ping/TopologyConnectorServlet.java [124:170]
44 lines of code
15 McCabe index (conditional complexity)

    void initWhitelist(String[] whitelistConfig) {
        if (whitelistConfig == null) {
            return;
        }
        for (int i = 0; i < whitelistConfig.length; i++) {
            String aWhitelistEntry = whitelistConfig[i];

            WhitelistEntry whitelistEntry = null;
            if (aWhitelistEntry.contains(".") && aWhitelistEntry.contains("/")) {
                // then this is a CIDR notation
                try {
                    whitelistEntry = new SubnetWhitelistEntry(aWhitelistEntry);
                } catch (Exception e) {
                    logger.error("activate: wrongly formatted CIDR subnet definition. Expected eg '1.2.3.4/24'. ignoring: " + aWhitelistEntry);
                    continue;
                }
            } else if (aWhitelistEntry.contains(".") && aWhitelistEntry.contains(" ")) {
                // then this is a IP/subnet-mask notation
                try {
                    final StringTokenizer st = new StringTokenizer(aWhitelistEntry, " ");
                    final String ip = st.nextToken();
                    if (st.hasMoreTokens()) {
                        final String mask = st.nextToken();
                        if (st.hasMoreTokens()) {
                            logger.error("activate: wrongly formatted ip subnet definition. Expected '10.1.2.3 255.0.0.0'. Ignoring: " + aWhitelistEntry);
                            continue;
                        }
                        whitelistEntry = new SubnetWhitelistEntry(ip, mask);
                    }
                } catch (Exception e) {
                    logger.error("activate: wrongly formatted ip subnet definition. Expected '10.1.2.3 255.0.0.0'. Ignoring: " + aWhitelistEntry);
                    continue;
                }
            }
            if (whitelistEntry == null) {
                if (aWhitelistEntry.contains("*") || aWhitelistEntry.contains("?")) {
                    whitelistEntry = new WildcardWhitelistEntry(aWhitelistEntry);
                } else {
                    plaintextWhitelist.add(aWhitelistEntry);
                }
            }
            logger.info("activate: adding whitelist entry: " + aWhitelistEntry);
            if (whitelistEntry != null) {
                whitelist.add(whitelistEntry);
            }
        }
    }