/*
 * Aipo is a groupware program developed by Aimluck,Inc.
 * Copyright (C) 2004-2011 Aimluck,Inc.
 * http://www.aipo.com
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.aimluck.eip.util;

import java.util.StringTokenizer;
import java.util.zip.CRC32;

import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;

import org.apache.cayenne.DataRow;
import org.apache.commons.codec.binary.Base64;
import org.apache.jetspeed.capability.CapabilityMap;
import org.apache.jetspeed.capability.CapabilityMapFactory;
import org.apache.jetspeed.om.profile.Entry;
import org.apache.jetspeed.om.profile.Portlets;
import org.apache.jetspeed.om.registry.MediaTypeEntry;
import org.apache.jetspeed.services.Registry;
import org.apache.jetspeed.services.logging.JetspeedLogFactoryService;
import org.apache.jetspeed.services.logging.JetspeedLogger;
import org.apache.jetspeed.services.resources.JetspeedResources;
import org.apache.jetspeed.services.rundata.JetspeedRunData;
import org.apache.jetspeed.util.MimeType;
import org.apache.jetspeed.util.template.JetspeedLink;
import org.apache.jetspeed.util.template.JetspeedLinkFactory;
import org.apache.turbine.util.DynamicURI;
import org.apache.turbine.util.RunData;

import com.aimluck.eip.cayenne.om.account.EipMCompany;
import com.aimluck.eip.common.ALEipConstants;
import com.aimluck.eip.common.ALEipUser;
import com.aimluck.eip.services.config.ALConfigHandler.Property;
import com.aimluck.eip.services.config.ALConfigService;

/**
 * Aimluck EIP のユーティリティクラスです。
 * 
 */
public class ALCellularUtils {

  /** logger */
  private static final JetspeedLogger logger = JetspeedLogFactoryService
    .getLogger(ALCellularUtils.class.getName());

  /**
   * 携帯電話の固有 ID によるログイン認証時のアクセス URL に付加する値を取得します。
   * 
   * @param username
   * @return
   */
  public static String getCheckValueForCellLogin(String username, String userid) {
    if (username == null || username.length() == 0 || userid == null) {
      return "";
    }

    String marge = username + userid;
    CRC32 crc32 = new CRC32();
    crc32.update(marge.getBytes());
    long value = crc32.getValue();
    String base64value = null;
    try {
      base64value =
        new String(Base64.encodeBase64(String.valueOf(value).getBytes()));
    } catch (Exception e) {
    }

    return (base64value == null) ? "" : base64value.toLowerCase();
  }

  /**
   * 携帯電話の固有 ID を取得します。
   * 
   * @param rundata
   * @return
   */
  public static String getCellularUid(RunData rundata) {
    String password = "";
    JetspeedRunData data = (JetspeedRunData) rundata;
    String useragent = data.getRequest().getHeader("User-Agent");
    if (useragent != null && useragent.length() > 0) {
      useragent = useragent.trim();
      CapabilityMap cm = CapabilityMapFactory.getCapabilityMap(useragent);
      MimeType mime = cm.getPreferredType();
      if (mime != null) {
        MediaTypeEntry media =
          (MediaTypeEntry) Registry.getEntry(Registry.MEDIA_TYPE, cm
            .getPreferredMediaType());
        if ("docomo_imode".equals(media.getName())) {
          int lastindex = useragent.lastIndexOf("ser");
          if (lastindex >= 0) {
            password = useragent.substring(lastindex, useragent.length());
          }
        } else if ("docomo_foma".equals(media.getName())) {
          StringTokenizer st = new StringTokenizer(useragent, ";");
          String token = null;
          while (st.hasMoreTokens()) {
            if ((token = st.nextToken()).startsWith("ser")) {
              password = token.trim();
              break;
            }
          }
        } else if ("au".equals(media.getName())) {
          String header = data.getRequest().getHeader("x-up-subno");
          if (header != null && header.length() > 0) {
            int index = header.indexOf("_");
            if (index >= 0) {
              password = header.substring(0, index);
            }
          }
        } else if ("vodafone".equals(media.getName())) {
          int index = useragent.indexOf("SN");
          if (index >= 0) {
            int delta = -1;
            if (useragent.startsWith("J-PHONE/4")) {
              delta = 10;
            } else if (useragent.startsWith("J-PHONE/5")) {
              delta = 15;
            } else if (useragent.startsWith("Vodafone")) {
              delta = 15;
            } else if (useragent.startsWith("SoftBank")) {
              delta = 15;
            }
            if (index >= 0 && delta > 0) {
              password = useragent.substring(index, index + 2 + delta);
            }
          } else {
            String jphoneUid = data.getRequest().getHeader("x-jphone-uid");
            if (jphoneUid != null) {
              password = jphoneUid;
            }
          }
        }
      }
    }
    return password;
  }

  /**
   * アクセス元の端末が携帯電話であるかを判定します。
   * 
   * @param data
   * @return
   */
  public static boolean isCellularPhone(RunData data) {
    boolean isCellularPhone = false;
    CapabilityMap cm =
      CapabilityMapFactory.getCapabilityMap(data.getRequest().getHeader(
        "User-Agent"));
    MimeType mime = cm.getPreferredType();
    if (mime != null) {
      MediaTypeEntry media =
        (MediaTypeEntry) Registry.getEntry(Registry.MEDIA_TYPE, cm
          .getPreferredMediaType());
      String mediatype = media.getName();
      if ("docomo_imode".equals(mediatype)
        || "docomo_foma".equals(mediatype)
        || "au".equals(mediatype)
        || "vodafone".equals(mediatype)) {
        isCellularPhone = true;
      }
    }
    return isCellularPhone;
  }

  /**
   * データベースの検索結果から、指定したキーに対応する値を取得します。
   * 
   * @param dataRow
   * @param key
   * @return
   */
  public static Object getObjFromDataRow(DataRow dataRow, String key) {
    String lowerKey = key.toLowerCase();
    if (dataRow.containsKey(lowerKey)) {
      return dataRow.get(lowerKey);
    } else {
      return dataRow.get(key.toUpperCase());
    }
  }

  /**
   * 携帯電話からのアクセス用 URL を取得します。
   * 
   * @param useraddr
   * @return
   */
  public static String getCellularUrl(RunData rundata, ALEipUser eipUser) {
    String url;

    String loginUrl = ALConfigService.get(Property.EXTERNAL_LOGIN_URL);

    if (loginUrl != null && loginUrl.length() > 0) {
      return loginUrl;
    }

    String key =
      eipUser.getName().getValue()
        + "_"
        + getCheckValueForCellLogin(eipUser.getName().getValue(), eipUser
          .getUserId()
          .toString());
    EipMCompany record = ALEipUtils.getEipMCompany("1");
    String domain =
      ALServletUtils.getAccessUrl(record.getIpaddress(), record
        .getPort()
        .intValue(), true);
    if (domain != null && domain.length() > 0) {
      url = domain + "?key=" + key;
    } else {
      url = "";
    }
    return url;
  }

  /**
   * 携帯電話からのアクセス用 key を取得します。
   * 
   * @param useraddr
   * @return
   */
  public static String getCellularKey(ALEipUser eipUser) {
    String key =
      eipUser.getName().getValue()
        + "_"
        + getCheckValueForCellLogin(eipUser.getName().getValue(), eipUser
          .getUserId()
          .toString());

    return key;
  }

  /**
   * Triple DES で文字列を暗号化します。
   * 
   * @param plain
   *          暗号化対象文字列
   * @return 暗号化文字列
   * @throws Exception
   *           暗号化時の例外
   */
  public static String crypt3Des(String key, String plain) throws Exception {
    String KEY_CRPTY_ALGORITHM = "DESede";

    // 24文字までをキーにする。
    byte[] tripleDesKeyData = new byte[24];
    byte[] kyebyte = key.getBytes();
    int len = kyebyte.length;
    for (int i = 0; i < len; i++) {
      tripleDesKeyData[i] = kyebyte[i];
    }
    SecretKey secretKey =
      new SecretKeySpec(tripleDesKeyData, KEY_CRPTY_ALGORITHM);

    Cipher cipher = Cipher.getInstance(KEY_CRPTY_ALGORITHM);
    cipher.init(Cipher.ENCRYPT_MODE, secretKey);
    byte[] encryptedMessage = cipher.doFinal(plain.getBytes());

    return new String(Base64.encodeBase64(encryptedMessage));
  }

  /**
   * Triple DES で文字列を復号します。
   * 
   * @param plain
   *          復号対象文字列
   * @return 復号文字列
   * @throws Exception
   *           復号時の例外
   */
  @SuppressWarnings("unused")
  private static String decrypt3Des(String key, String plain) throws Exception {
    String KEY_CRPTY_ALGORITHM = "DESede";

    // 24文字までをキーにする。
    byte[] tripleDesKeyData = new byte[24];
    byte[] kyebyte = key.getBytes();
    int len = kyebyte.length;
    for (int i = 0; i < len; i++) {
      tripleDesKeyData[i] = kyebyte[i];
    }
    SecretKey secretKey =
      new SecretKeySpec(tripleDesKeyData, KEY_CRPTY_ALGORITHM);

    Cipher cipher = Cipher.getInstance(KEY_CRPTY_ALGORITHM);
    cipher.init(Cipher.DECRYPT_MODE, secretKey);

    Base64 decoder = new Base64();
    byte[] decParam = decoder.decode(plain.trim().getBytes());

    return String.valueOf(cipher.doFinal(decParam));
  }

  /**
   * 指定したエントリー名のポートレットへの URI を取得します。
   * 
   * @param rundata
   * @param portletEntryName
   *          PSML ファイルに記述されているタグ entry の要素 parent
   * @return
   */
  public static String getPortletURIForCell(RunData rundata,
      String portletEntryId) {
    try {
      Portlets portlets =
        ((JetspeedRunData) rundata).getProfile().getDocument().getPortlets();
      if (portlets == null) {
        return null;
      }

      Entry[] entries = portlets.getEntriesArray();
      if (entries == null || entries.length <= 0) {
        return null;
      }

      int ent_length = entries.length;
      for (int j = 0; j < ent_length; j++) {
        if (entries[j].getId().equals(portletEntryId)) {
          JetspeedLink jsLink = JetspeedLinkFactory.getInstance(rundata);
          DynamicURI duri =
            jsLink.getLink(
              JetspeedLink.CURRENT,
              null,
              null,
              JetspeedLink.CURRENT,
              null);
          duri =
            duri.addPathInfo(
              JetspeedResources.PATH_PORTLETID_KEY,
              entries[j].getId()).addQueryData(
              JetspeedResources.PATH_ACTION_KEY,
              "controls.Maximize").addQueryData(
              ALEipConstants.MODE,
              ALEipConstants.MODE_LIST);
          return duri.toString();
        }
      }
    } catch (Exception ex) {
      logger.error("Exception", ex);
      return null;
    }
    return null;
  }

}
