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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * Copyright 2016 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.channel.unix;

import io.netty.util.internal.UnstableApi;

import static io.netty.util.internal.EmptyArrays.EMPTY_INTS;

/**
 * User credentials discovered for the peer unix domain socket.
 *
 * The PID, UID and GID of the user connected on the other side of the unix domain socket
 * For details see:
 * SO_PEERCRED
 */
@UnstableApi
public final class PeerCredentials {
    private final int pid;
    private final int uid;
    private final int[] gids;

    // These values are set by JNI via Socket.peerCredentials()
    PeerCredentials(int p, int u, int... gids) {
        pid = p;
        uid = u;
        this.gids = gids == null ? EMPTY_INTS : gids;
    }

    /**
     * Get the PID of the peer process.
     * 
     * This is currently not populated on MacOS and BSD based systems.
     * @return The PID of the peer process.
     */
    public int pid() {
        return pid;
    }

    public int uid() {
        return uid;
    }

    public int[] gids() {
        return gids.clone();
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder(128);
        sb.append("UserCredentials[pid=").append(pid).append("; uid=").append(uid).append("; gids=[");
        if (gids.length > 0) {
            sb.append(gids[0]);
            for (int i = 1; i < gids.length; ++i) {
                sb.append(", ").append(gids[i]);
            }
        }
        sb.append(']');
        return sb.toString();
    }
}