/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.catalina;

/**
 * Global constants that are applicable to multiple packages within Catalina.
 *
 * @author Craig R. McClanahan
 */
public final class Globals {

    // ------------------------------------------------- Request attribute names

    public static final String ASYNC_SUPPORTED_ATTR = "org.apache.catalina.ASYNC_SUPPORTED";


    public static final String GSS_CREDENTIAL_ATTR = "org.apache.catalina.realm.GSS_CREDENTIAL";


    /**
     * Request dispatcher state.
     */
    public static final String DISPATCHER_TYPE_ATTR = "org.apache.catalina.core.DISPATCHER_TYPE";


    /**
     * Request dispatcher path.
     */
    public static final String DISPATCHER_REQUEST_PATH_ATTR = "org.apache.catalina.core.DISPATCHER_REQUEST_PATH";


    /**
     * The request attribute under which we store the servlet name on a named dispatcher request.
     */
    public static final String NAMED_DISPATCHER_ATTR = "org.apache.catalina.NAMED";


    /**
     * The request attribute set by the RemoteIpFilter, RemoteIpValve (and may be set by other similar components) that
     * identifies for the connector the remote IP address claimed to be associated with this request when a request is
     * received via one or more proxies. It is typically provided via the X-Forwarded-For HTTP header. Duplicated here
     * for neater code in the catalina packages.
     */
    public static final String REMOTE_ADDR_ATTRIBUTE = org.apache.coyote.Constants.REMOTE_ADDR_ATTRIBUTE;


    /**
     * The request attribute that is set to the value of {@code Boolean.TRUE} by the RemoteIpFilter, RemoteIpValve (and
     * other similar components) that identifies a request which been forwarded via one or more proxies.
     */
    public static final String REQUEST_FORWARDED_ATTRIBUTE = "org.apache.tomcat.request.forwarded";


    /**
     * The request attribute that is set to the value of {@code Boolean.TRUE} if connector processing this request
     * supports use of sendfile. Duplicated here for neater code in the catalina packages.
     */
    public static final String SENDFILE_SUPPORTED_ATTR = org.apache.coyote.Constants.SENDFILE_SUPPORTED_ATTR;


    /**
     * The request attribute that is set to the value of {@code Boolean.TRUE} if
     * {@link org.apache.catalina.filters.RemoteIpFilter} determines that this request was submitted via a secure
     * channel.
     */
    public static final String REMOTE_IP_FILTER_SECURE = "org.apache.catalina.filters.RemoteIpFilter.secure";

    /**
     * The request attribute that can be used by a servlet to pass to the connector the name of the file that is to be
     * served by sendfile. The value should be {@code String} that is {@code File.getCanonicalPath()} of the file to be
     * served. Duplicated here for neater code in the catalina packages.
     */
    public static final String SENDFILE_FILENAME_ATTR = org.apache.coyote.Constants.SENDFILE_FILENAME_ATTR;


    /**
     * The request attribute that can be used by a servlet to pass to the connector the start offset of the part of a
     * file that is to be served by sendfile. The value should be {@code Long}. To serve complete file the value should
     * be {@code Long.valueOf(0)}. Duplicated here for neater code in the catalina packages.
     */
    public static final String SENDFILE_FILE_START_ATTR = org.apache.coyote.Constants.SENDFILE_FILE_START_ATTR;


    /**
     * The request attribute that can be used by a servlet to pass to the connector the end offset (not including) of
     * the part of a file that is to be served by sendfile. The value should be {@code java.lang.Long}. To serve
     * complete file the value should be equal to the length of the file. Duplicated here for neater code in the
     * catalina packages.
     */
    public static final String SENDFILE_FILE_END_ATTR = org.apache.coyote.Constants.SENDFILE_FILE_END_ATTR;


    /**
     * The request attribute under which we store the array of X509Certificate objects representing the certificate
     * chain presented by our client, if any.
     */
    public static final String CERTIFICATES_ATTR = "jakarta.servlet.request.X509Certificate";


    /**
     * The request attribute under which we store the name of the security protocol (e.g. TLSv1.3) being used on a
     * secured connection (as an object of type {@link String}).
     */
    public static final String SECURE_PROTOCOL_ATTR = "jakarta.servlet.request.secure_protocol";


    /**
     * The request attribute under which we store the name of the cipher suite being used on an SSL connection (as an
     * object of type {@link String}).
     */
    public static final String CIPHER_SUITE_ATTR = "jakarta.servlet.request.cipher_suite";


    /**
     * The request attribute under which we store the key size being used for this SSL connection (as an object of type
     * {@link Integer}).
     */
    public static final String KEY_SIZE_ATTR = "jakarta.servlet.request.key_size";


    /**
     * The request attribute under which we store the session id being used for this SSL connection (as an object of
     * type {@link String}).
     */
    public static final String SSL_SESSION_ID_ATTR = "jakarta.servlet.request.ssl_session_id";


    /**
     * The request attribute key for the session manager. This one is a Tomcat extension to the Servlet spec.
     */
    public static final String SSL_SESSION_MGR_ATTR = "jakarta.servlet.request.ssl_session_mgr";


    // ------------------------------------------ ServletContext attribute names

    /**
     * The servlet context attribute under which we store the alternate deployment descriptor for this web application
     */
    public static final String ALT_DD_ATTR = "org.apache.catalina.deploy.alt_dd";


    /**
     * The servlet context attribute under which we store the class path for our application class loader (as an object
     * of type String), delimited with the appropriate path delimiter for this platform.
     */
    public static final String CLASS_PATH_ATTR = "org.apache.catalina.jsp_classpath";


    /**
     * Name of the ServletContext attribute under which we store the context Realm's CredentialHandler (if both the
     * Realm and the CredentialHandler exist).
     */
    public static final String CREDENTIAL_HANDLER = "org.apache.catalina.CredentialHandler";


    /**
     * The WebResourceRoot which is associated with the context. This can be used to manipulate static files.
     */
    public static final String RESOURCES_ATTR = "org.apache.catalina.resources";


    /**
     * Name of the ServletContext attribute under which we store the web application version string (the text that
     * appears after ## when parallel deployment is used).
     */
    public static final String WEBAPP_VERSION = "org.apache.catalina.webappVersion";


    // --------------------------- ServletContext initialisation parameter names

    /**
     * Name of the ServletContext init-param that determines if the JSP engine should validate *.tld files when parsing
     * them.
     * <p>
     * This must be kept in sync with org.apache.jasper.Constants
     */
    public static final String JASPER_XML_VALIDATION_TLD_INIT_PARAM = "org.apache.jasper.XML_VALIDATE_TLD";


    /**
     * Name of the ServletContext init-param that determines if the JSP engine will block external entities from being
     * used in *.tld, *.jspx, *.tagx and tagplugin.xml files.
     * <p>
     * This must be kept in sync with org.apache.jasper.Constants
     */
    public static final String JASPER_XML_BLOCK_EXTERNAL_INIT_PARAM = "org.apache.jasper.XML_BLOCK_EXTERNAL";


    // --------------------------------------------------- System property names

    /**
     * Name of the system property containing the tomcat product installation path
     */
    public static final String CATALINA_HOME_PROP = org.apache.catalina.startup.Constants.CATALINA_HOME_PROP;


    /**
     * Name of the system property containing the tomcat instance installation path
     */
    public static final String CATALINA_BASE_PROP = org.apache.catalina.startup.Constants.CATALINA_BASE_PROP;


    // -------------------------------------------------------- Global constants

    /**
     * The flag which controls strict servlet specification compliance. Setting this flag to {@code true} will change
     * the defaults for other settings.
     */
    public static final boolean STRICT_SERVLET_COMPLIANCE =
            Boolean.getBoolean("org.apache.catalina.STRICT_SERVLET_COMPLIANCE");


    /**
     * Default domain for MBeans if none can be determined
     */
    public static final String DEFAULT_MBEAN_DOMAIN = "Catalina";


    // ----------------------------------------- Specification related constants

    public static final String CONTENT_TYPE_FORM_URL_ENCODING = "application/x-www-form-urlencoded";
}
