/*
 *  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.tomcat.jni;

/**
 * User.
 *
 * @deprecated The scope of the APR/Native Library will be reduced in Tomcat 9.1.x / Tomcat Native 2.x and has been
 *                 reduced in Tomcat 10.1.x / Tomcat Native 2.x onwards to only include those components required to
 *                 provide OpenSSL integration with the NIO and NIO2 connectors.
 */
@Deprecated
public class User {

    /**
     * Get the userid (and groupid) of the calling process This function is available only if APR_HAS_USER is defined.
     *
     * @param p The pool from which to allocate working space
     *
     * @return Returns the user id
     *
     * @throws Error If an error occurred
     */
    public static native long uidCurrent(long p) throws Error;

    /**
     * Get the groupid of the calling process This function is available only if APR_HAS_USER is defined.
     *
     * @param p The pool from which to allocate working space
     *
     * @return Returns the group id
     *
     * @throws Error If an error occurred
     */
    public static native long gidCurrent(long p) throws Error;


    /**
     * Get the userid for the specified username This function is available only if APR_HAS_USER is defined.
     *
     * @param username The username to lookup
     * @param p        The pool from which to allocate working space
     *
     * @return Returns the user id
     *
     * @throws Error If an error occurred
     */
    public static native long uid(String username, long p) throws Error;

    /**
     * Get the groupid for the specified username This function is available only if APR_HAS_USER is defined.
     *
     * @param username The username to lookup
     * @param p        The pool from which to allocate working space
     *
     * @return Returns the user's group id
     *
     * @throws Error If an error occurred
     */
    public static native long usergid(String username, long p) throws Error;

    /**
     * Get the groupid for a specified group name This function is available only if APR_HAS_USER is defined.
     *
     * @param groupname The group name to look up
     * @param p         The pool from which to allocate working space
     *
     * @return Returns the user's group id
     *
     * @throws Error If an error occurred
     */
    public static native long gid(String groupname, long p) throws Error;

    /**
     * Get the user name for a specified userid This function is available only if APR_HAS_USER is defined.
     *
     * @param userid The userid
     * @param p      The pool from which to allocate the string
     *
     * @return New string containing user name
     *
     * @throws Error If an error occurred
     */
    public static native String username(long userid, long p) throws Error;

    /**
     * Get the group name for a specified groupid This function is available only if APR_HAS_USER is defined.
     *
     * @param groupid The groupid
     * @param p       The pool from which to allocate the string
     *
     * @return New string containing group name
     *
     * @throws Error If an error occurred
     */
    public static native String groupname(long groupid, long p) throws Error;

    /**
     * Compare two user identifiers for equality. This function is available only if APR_HAS_USER is defined.
     *
     * @param left  One uid to test
     * @param right Another uid to test
     *
     * @return APR_SUCCESS if the apr_uid_t structures identify the same user, APR_EMISMATCH if not, APR_BADARG if an
     *             apr_uid_t is invalid.
     */
    public static native int uidcompare(long left, long right);

    /**
     * Compare two group identifiers for equality. This function is available only if APR_HAS_USER is defined.
     *
     * @param left  One gid to test
     * @param right Another gid to test
     *
     * @return APR_SUCCESS if the apr_gid_t structures identify the same group, APR_EMISMATCH if not, APR_BADARG if an
     *             apr_gid_t is invalid.
     */
    public static native int gidcompare(long left, long right);

    /**
     * Get the home directory for the named user This function is available only if APR_HAS_USER is defined.
     *
     * @param username The named user
     * @param p        The pool from which to allocate the string
     *
     * @return New string containing directory name
     *
     * @throws Error If an error occurred
     */
    public static native String homepath(String username, long p) throws Error;

}