sessionmodule.java

来自「RESIN 3.2 最新源码」· Java 代码 · 共 666 行 · 第 1/2 页

  }

  /**
   * Sets the session cookie parameters
   */
  public Value session_set_cookie_params(Env env,
                                         long lifetime,
                                         @Optional Value path,
                                         @Optional Value domain,
                                         @Optional Value secure)
  {
    env.setIni("session.cookie_lifetime", String.valueOf(lifetime));

    if (path.isset())
      env.setIni("session.cookie_path", path.toString());

    if (domain.isset())
      env.setIni("session.cookie_domain", domain.toString());

    if (secure.isset())
      env.setIni("session.cookie_secure", secure.toBoolean() ? "1" : "0");

    return NullValue.NULL;
  }

  /**
   * Sets the session save handler
   */
  public boolean session_set_save_handler(Env env,
                                          Callback open,
                                          Callback close,
                                          Callback read,
                                          Callback write,
                                          Callback directory,
                                          Callback gc)

  {
    SessionCallback cb
      = new SessionCallback(open, close, read, write, directory, gc);

    env.setSessionCallback(cb);

    return true;
  }

  /**
   * Start the session
   */
  public static boolean session_start(Env env)
  {
    if (env.getSession() != null) {
      env.notice(L.l("session has already been started"));
      return true;
    }

    SessionCallback callback = env.getSessionCallback();

    Value sessionIdValue = (Value) env.getSpecialValue("caucho.session_id");
    String sessionId = null;

    HttpServletResponse response = env.getResponse();

    env.removeConstant("SID");

    String cookieName = env.getIni("session.name").toString();
    boolean generateCookie = true;
    boolean create = false;

    if (callback != null) {
      String savePath = env.getIni("session.save_path").toString();

      if (savePath == null || "".equals(savePath))
        callback.open(env, env.getWorkDir().getPath(), cookieName);
      else
        callback.open(env, savePath, cookieName);
    }

    //
    // Use cookies to transmit session id
    // 
    if (env.getIni("session.use_cookies").toBoolean()) {
      if (sessionIdValue != null)
        sessionId = sessionIdValue.toString();

      if (sessionId == null || "".equals(sessionId)) {
        Cookie []cookies = env.getRequest().getCookies();

        for (int i = 0; cookies != null && i < cookies.length; i++) {
          if (cookies[i].getName().equals(cookieName)
              && ! "".equals(cookies[i].getValue())) {
            sessionId = cookies[i].getValue();
            generateCookie = false;
          }
        }
      }

      if (! generateCookie)
        env.addConstant("SID", env.getEmptyString(), false);
    }

    //
    // Use URL rewriting to transmit session id
    //

    if (env.getIniBoolean("session.use_trans_sid")
	&& ! env.getIniBoolean("session.use_only_cookies")) {
      if (sessionId == null) {
        if (sessionIdValue != null)
          sessionId = sessionIdValue.toString();

        if (sessionId == null || "".equals(sessionId))
          sessionId = env.getRequest().getParameter(cookieName);

        if (sessionId == null || "".equals(sessionId)) {
          sessionId = env.generateSessionId();
          create = true;
        }
      }

      env.addConstant("SID", env.createString(cookieName + '=' + sessionId),
                      false);
      
      OutputModule.pushUrlRewriter(env);
    }
    
    if (sessionId == null || "".equals(sessionId)) {
      sessionId = env.generateSessionId();
      create = true;
    }

    if (response.isCommitted())
      env.warning(L.l("cannot send session cache limiter headers because response is committed"));
    else {
      Value cacheLimiterValue = env.getIni("session.cache_limiter");
      String cacheLimiter = String.valueOf(cacheLimiterValue);

      Value cacheExpireValue = (LongValue)env.getSpecialValue("cache_expire");

      if (cacheExpireValue == null)
        cacheExpireValue = env.getIni("session.cache_expire");

      int cacheExpire = cacheExpireValue.toInt() * 60;

      if ("nocache".equals(cacheLimiter)) {
        response.setHeader("Expires", "Thu, 19 Nov 1981 08:52:00 GMT");
        response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
        response.setHeader("Pragma", "no-cache");
      }
      else if ("private".equals(cacheLimiter)) {
        response.setHeader("Cache-Control", "private, max-age=" + cacheExpire + ", pre-check=" + cacheExpire);
      }
      else if ("private_no_expire".equals(cacheLimiter)) {
        response.setHeader("Cache-Control", "private, max-age=" + cacheExpire + ", pre-check=" + cacheExpire);
      }
      else if ("public".equals(cacheLimiter)) {
        response.setHeader("Cache-Control", "max-age=" + cacheExpire + ", pre-check=" + cacheExpire);
      }
      else if ("none".equals(cacheLimiter)) {
      }
      else {
        response.setHeader("Cache-Control", cacheLimiter + ", max-age=" + cacheExpire + ", pre-check=" + cacheExpire);
      }
    }

    SessionArrayValue session = env.createSession(sessionId, create);
    sessionId = session.getId();

    if (env.getIni("session.use_cookies").toBoolean() && generateCookie) {
      generateSessionCookie(env, sessionId);
    }
    env.setSpecialValue("caucho.session_id", env.createString(sessionId));

    return true;
  }

  /**
   * Sends a new session cookie.
   */
  private static void generateSessionCookie(Env env, String sessionId)
  { 
    final HttpServletResponse response = env.getResponse();
   
    String cookieName = env.getIni("session.name").toString();
    
    env.addConstant("SID", 
            env.createString(cookieName + '=' + sessionId),
            false);

    Cookie cookie = new Cookie(cookieName, sessionId);
    // #2649
    cookie.setVersion(1);

    if (response.isCommitted()) {
      env.warning(L.l("cannot send session cookie because response is committed"));
    }
    else {
      Value path = env.getIni("session.cookie_path");
      cookie.setPath(path.toString());

      Value maxAge = env.getIni("session.cookie_lifetime");

      if (maxAge.toInt() != 0)
        cookie.setMaxAge(maxAge.toInt());

      Value domain = env.getIni("session.cookie_domain");

      // this is for 3rd party servlet containers that don't check the domain
      // before sending the cookie
      if (domain.length() > 0) {
        cookie.setDomain(domain.toString());
      }
      
      Value secure = env.getIni("session.cookie_secure");
      cookie.setSecure(secure.toBoolean());

      response.addCookie(cookie);
    }
  }

  /**
   * Unsets the specified session values
   */
  public boolean session_unregister(Env env, Value key)
  {
    Value value = env.getGlobalValue("_SESSION");

    if (! value.isArray())
      return false;

    value.remove(key);

    return true;
  }

  /**
   * Unsets the session values
   */
  public Value session_unset(Env env)
  {
    Value value = env.getGlobalValue("_SESSION");

    if (! value.isArray())
      return NullValue.NULL;

    ArrayValue array = value.toArrayValue(env);
    
    array.clear();

    return NullValue.NULL;
  }

  /**
   * Writes the session and closes it.
   */
  public static Value session_write_close(Env env)
  {
    env.sessionWriteClose();

    return NullValue.NULL;
  }

  /**
   * Converts an integer to a printable character
   */
  private static char encode(long code)
  {
    code = code & 0x3f;

    if (code < 26)
      return (char) ('a' + code);
    else if (code < 52)
      return (char) ('A' + code - 26);
    else if (code < 62)
      return (char) ('0' + code - 52);
    else if (code == 62)
      return '_';
    else
      return '-';
  }


  static final IniDefinition INI_SESSION_SAVE_PATH
    = _iniDefinitions.add("session.save_path", "", PHP_INI_ALL);
  static final IniDefinition INI_SESSION_NAME
    = _iniDefinitions.add("session.name", "PHPSESSID", PHP_INI_ALL);
  static final IniDefinition INI_SESSION_SAVE_HANDLER
    = _iniDefinitions.add("session.save_handler", "files", PHP_INI_ALL);
  static final IniDefinition INI_SESSION_AUTO_START
    = _iniDefinitions.add("session.auto_start", false, PHP_INI_ALL);
  static final IniDefinition INI_SESSION_GC_PROBABILITY_START
    = _iniDefinitions.add("session.gc_probability_start", true, PHP_INI_ALL);
  static final IniDefinition INI_SESSION_GC_DIVISOR
    = _iniDefinitions.add("session.gc_divisor", 100, PHP_INI_ALL);
  static final IniDefinition INI_SESSION_GC_MAXLIFETIME
    = _iniDefinitions.add("session.gc_maxlifetime", 1440, PHP_INI_ALL);
  static final IniDefinition INI_SESSION_SERIALIZE_HANDLER
    = _iniDefinitions.add("session.serialize_handler", "quercus", PHP_INI_ALL);
  static final IniDefinition INI_SESSION_COOKIE_LIFETIME
    = _iniDefinitions.add("session.cookie_lifetime", 0, PHP_INI_ALL);
  static final IniDefinition INI_SESSION_COOKIE_PATH
    = _iniDefinitions.add("session.cookie_path", "/", PHP_INI_ALL);
  static final IniDefinition INI_SESSION_COOKIE_DOMAIN
    = _iniDefinitions.add("session.cookie_domain", "", PHP_INI_ALL);
  static final IniDefinition INI_SESSION_COOKIE_SECURE
    = _iniDefinitions.add("session.cookie_secure", "", PHP_INI_ALL);
  static final IniDefinition INI_SESSION_USE_COOKIES
    = _iniDefinitions.add("session.use_cookies", true, PHP_INI_ALL);
  static final IniDefinition INI_SESSION_USE_ONLY_COOKIES
    = _iniDefinitions.add("session.use_only_cookies", true, PHP_INI_ALL);
  static final IniDefinition INI_SESSION_REFERER_CHECK
    = _iniDefinitions.add("session.referer_check", "", PHP_INI_ALL);
  static final IniDefinition INI_SESSION_ENTROPY_FILE
    = _iniDefinitions.add("session.entropy_file", "", PHP_INI_ALL);
  static final IniDefinition INI_SESSION_ENTROPY_LENGTH
    = _iniDefinitions.add("session.entropy_length", false, PHP_INI_ALL);
  static final IniDefinition INI_SESSION_CACHE_LIMITER
    = _iniDefinitions.add("session.cache_limiter", "nocache", PHP_INI_ALL);
  static final IniDefinition INI_SESSION_CACHE_EXPIRE
    = _iniDefinitions.add("session.cache_expire", 180, PHP_INI_ALL);
  static final IniDefinition INI_SESSION_USE_TRANS_SID
    = _iniDefinitions.add("session.use_trans_sid", false, PHP_INI_ALL);
  static final IniDefinition INI_SESSION_BUG_COMPAT_42
    = _iniDefinitions.add("session.bug_compat_42", true, PHP_INI_ALL);
  static final IniDefinition INI_SESSION_BUG_COMPAT_WARN
    = _iniDefinitions.add("session.bug_compat_warn", true, PHP_INI_ALL);
  static final IniDefinition INI_SESSION_HASH_FUNCTION
    = _iniDefinitions.add("session.hash_function", false, PHP_INI_ALL);
  static final IniDefinition INI_SESSION_HASH_BITS_PER_CHARACTER
    = _iniDefinitions.add("session.hash_bits_per_character", 4, PHP_INI_ALL);
  static final IniDefinition INI_URL_REWRITER_TAGS
    = _iniDefinitions.add("url_rewriter.tags", "a=href,area=href,frame=src,form=,fieldset=", PHP_INI_ALL);
}