org.gluu.oxtrust.util.PropertyUtil.java Source code

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Here is the source code for org.gluu.oxtrust.util.PropertyUtil.java

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/*
 * oxTrust is available under the MIT License (2008). See http://opensource.org/licenses/MIT for full text.
 *
 * Copyright (c) 2014, Gluu
 */

package org.gluu.oxtrust.util;

import java.util.List;

import org.apache.commons.lang.StringEscapeUtils;
import org.apache.log4j.Logger;
import org.gluu.oxtrust.config.OxTrustConfiguration;
import org.xdi.model.SimpleProperty;
import org.xdi.util.StringHelper;
import org.xdi.util.security.StringEncrypter;
import org.xdi.util.security.StringEncrypter.EncryptionException;

/**
 * Utility class with helpers methods to generate configuration files
 * 
 * @author Yuriy Movchan Date: 08.02.2011
 */
public class PropertyUtil {

    private static final Logger log = Logger.getLogger(PropertyUtil.class);

    private String cryptoConfigurationSalt;

    public PropertyUtil() {
        // Init variable because velocity call method encryptString without AOP interceptor
        this.cryptoConfigurationSalt = OxTrustConfiguration.instance().getCryptoConfigurationSalt();
    }

    public String encryptString(String value) {
        try {
            return StringEncrypter.defaultInstance().encrypt(value, cryptoConfigurationSalt);
        } catch (EncryptionException ex) {
            log.error("Failed to encrypt string: " + value, ex);
        }

        return null;
    }

    public static String stringsToCommaSeparatedList(List<String> values) {
        StringBuilder sb = new StringBuilder();

        int count = values.size();
        for (int i = 0; i < count; i++) {
            sb.append(escapeString(values.get(i)));
            if (i < count - 1) {
                sb.append(", ");
            }
        }

        return sb.toString();
    }

    public static String simplePropertiesToCommaSeparatedList(List<SimpleProperty> values) {
        StringBuilder sb = new StringBuilder();

        int count = values.size();
        for (int i = 0; i < count; i++) {
            sb.append(escapeString(values.get(i).getValue()));
            if (i < count - 1) {
                sb.append(", ");
            }
        }

        return sb.toString();
    }

    public static String escapeString(String value) {
        if (StringHelper.isEmpty(value)) {
            return "";
        }

        return escapeComma(StringEscapeUtils.escapeJava(value));
    }

    /**
     * Inserts a backslash before every comma
     */
    private static String escapeComma(String s) {
        StringBuffer buf = new StringBuffer(s);
        for (int i = 0; i < buf.length(); i++) {
            char c = buf.charAt(i);
            if (c == ',') {
                buf.insert(i, '\\');
                i++;
            }
        }
        return buf.toString();
    }

    public static boolean isEmptyString(String string) {
        return StringHelper.isEmpty(string);
    }

}