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The New Relic Security Java agent module for full-stack security. To be used in newrelic-java-agent only.

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package com.newrelic.agent.security.instrumentator.os;

import com.newrelic.agent.security.AgentConfig;
import com.newrelic.agent.security.AgentInfo;
import com.newrelic.agent.security.intcodeagent.logging.IAgentConstants;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.SystemUtils;

import java.io.File;
import java.nio.file.Paths;

public class OsVariablesInstance {

    public static final String LOGS = "logs";
    public static final String LANGUAGE_AGENT = "language-agent";

    public static final String TMP = "tmp";

    private static OsVariablesInstance instance;

    private final static Object lock = new Object();

    private OSVariables osVariables;

    private OsVariablesInstance() {
        osVariables = new OSVariables();

        if(StringUtils.isNotBlank(AgentConfig.getInstance().getSecurityHome())) {
            osVariables.setLogDirectory(Paths.get(AgentConfig.getInstance().getSecurityHome(), LOGS).toString());
            osVariables.setTmpDirectory(Paths.get(AgentConfig.getInstance().getSecurityHome(), TMP, LANGUAGE_AGENT, AgentInfo.getInstance().getApplicationUUID()).toString());
        }
//        osVariables.setPolicyConfigPath(Paths.get(k2root.toString(), CONFIG, LANGUAGE_AGENT).toString());

        if (SystemUtils.IS_OS_LINUX) {
            osVariables.setLinux(true);
            osVariables.setOs(IAgentConstants.LINUX);
            osVariables.setRootDir(new File(File.separator));
        } else if (SystemUtils.IS_OS_MAC) {
            osVariables.setMac(true);
            osVariables.setOs(IAgentConstants.MAC);
            osVariables.setRootDir(new File(File.separator));
        } else if (SystemUtils.IS_OS_WINDOWS) {
            osVariables.setWindows(true);
            osVariables.setOs(IAgentConstants.WINDOWS);
            osVariables.setRootDir(new File("C:"));
        }
        String arch = SystemUtils.OS_ARCH;
        osVariables.setOsArch(getOsArch(arch));
    }

    private String getOsArch(String arch) {
        switch (arch) {
            case "aarch64":
            case "arm64":
                return "aarch64";
            case "amd64":
            case "x86_64":
            default:
                return "x64";
        }
    }

    public OSVariables getOsVariables() {
        return osVariables;
    }

    public void setOsVariables(OSVariables osVariables) {
        this.osVariables = osVariables;
    }

    public static OsVariablesInstance getInstance() {
        if (instance == null) {
            synchronized (lock) {
                if (instance == null) {
                    instance = new OsVariablesInstance();
                }
            }
        }
        return instance;
    }

    /***
     * Do not call this method more than once.
     * @return
     */
    public static OsVariablesInstance instantiate() {
        instance = new OsVariablesInstance();
        return instance;
    }
}