--- /dev/null
+//
+// Getdown - application installer, patcher and launcher
+// Copyright (C) 2004-2018 Getdown authors
+// https://github.com/threerings/getdown/blob/master/LICENSE
+
+package com.threerings.getdown.data;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import com.threerings.getdown.util.VersionUtil;
+
+/**
+ * This class encapsulates all system properties that are read and processed by Getdown. Don't
+ * stick a call to {@code System.getProperty} randomly into the code, put it in here and give it an
+ * accessor so that it's easy to see all of the secret system property arguments that Getdown makes
+ * use of.
+ */
+public class SysProps
+{
+ /** Configures the appdir (in lieu of passing it in argv). Usage: {@code -Dappdir=foo}. */
+ public static String appDir () {
+ return System.getProperty("appdir");
+ }
+
+ /** Configures the appid (in lieu of passing it in argv). Usage: {@code -Dappid=foo}. */
+ public static String appId () {
+ return System.getProperty("appid");
+ }
+
+ /** Configures the bootstrap appbase (used in lieu of providing a skeleton getdown.txt, and as
+ * a last resort fallback). Usage: {@code -Dappbase=URL}. */
+ public static String appBase () {
+ return System.getProperty("appbase");
+ }
+
+ /** If true, disables redirection of logging into {@code launcher.log}.
+ * Usage: {@code -Dno_log_redir}. */
+ public static boolean noLogRedir () {
+ return System.getProperty("no_log_redir") != null;
+ }
+
+ /** Overrides the domain on {@code appbase}. Usage: {@code -Dappbase_domain=foo}. */
+ public static String appbaseDomain () {
+ return System.getProperty("appbase_domain");
+ }
+
+ /** Overrides enter {@code appbase}. Usage: {@code -Dappbase_override=URL}. */
+ public static String appbaseOverride () {
+ return System.getProperty("appbase_override");
+ }
+
+ /** If true, Getdown installs the app without ever bringing up a UI (except in the event of an
+ * error). NOTE: it does not launch the app. See {@link #launchInSilent}.
+ * Usage: {@code -Dsilent}. */
+ public static boolean silent () {
+ return System.getProperty("silent") != null;
+ }
+
+ /** Instructs Getdown to install/update the app without ever bringing up a UI (except in the
+ * event of an error), and then launch it.
+ * Usage: {@code -Dsilent=launch}. */
+ public static boolean launchInSilent () {
+ return "launch".equals(System.getProperty("silent"));
+ }
+
+ /**
+ * Instructs Getdown to launch the app without updating it, or ever bringing up a UI (except
+ * in the event of an error).
+ * Usage: {@code -Dsilent=noupdate}.
+ */
+ public static boolean noUpdate() {
+ return "noupdate".equals(System.getProperty("silent"));
+ }
+
+ /** If true, Getdown does not automatically install updates after downloading them. It waits
+ * for the application to call `Getdown.install`.
+ * Usage: {@code -Dno_install}. */
+ public static boolean noInstall () {
+ return System.getProperty("no_install") != null;
+ }
+
+ /** Specifies the delay (in minutes) to wait before starting the update and install process.
+ * Minimum delay is 0 minutes, or no delay (negative values are rounded up to 0 minutes).
+ * Maximum delay is 1 day, or 1440 minutes (larger values are rounded down to 1 day).
+ * Usage: {@code -Ddelay=N}. */
+ public static int startDelay () {
+ return Math.min(Math.max(Integer.getInteger("delay", 0), 0), 60 * 24);
+ }
+
+ /** If true, Getdown will not unpack {@code uresource} jars. Usage: {@code -Dno_unpack}. */
+ public static boolean noUnpack () {
+ return Boolean.getBoolean("no_unpack");
+ }
+
+ /** If true, Getdown will run the application in the same VM in which Getdown is running. If
+ * false (the default), Getdown will fork a new VM. Note that reusing the same VM prevents
+ * Getdown from configuring some launch-time-only VM parameters (like -mxN etc.).
+ * Usage: {@code -Ddirect}. */
+ public static boolean direct () {
+ return Boolean.getBoolean("direct");
+ }
+
+ /** Specifies the connection timeout (in seconds) to use when downloading control files from
+ * the server. This is chiefly useful when you are running in versionless mode and want Getdown
+ * to more quickly timeout its startup update check if the server with which it is
+ * communicating is not available. Usage: {@code -Dconnect_timeout=N}. */
+ public static int connectTimeout () {
+ return Integer.getInteger("connect_timeout", 0);
+ }
+
+ /** Specifies the read timeout (in seconds) to use when downloading all files from the server.
+ * The default is 30 seconds, meaning that if a download stalls for more than 30 seconds, the
+ * update process wil fail. Setting the timeout to zero (or a negative value) will disable it.
+ * Usage: {@code -Dread_timeout=N}. */
+ public static int readTimeout () {
+ return Integer.getInteger("read_timeout", 30);
+ }
+
+ /** Returns the number of threads used to perform digesting and verifying operations in
+ * parallel. Usage: {@code -Dthread_pool_size=N} */
+ public static int threadPoolSize () {
+ int defaultSize = Math.max(Runtime.getRuntime().availableProcessors()-1, 1);
+ return Integer.getInteger("thread_pool_size", defaultSize);
+ }
+
+ /** Parses a Java version system property using the supplied regular expression. The numbers
+ * extracted from the regexp will be placed in each consecutive hundreds position in the
+ * returned value.
+ *
+ * <p>For example, {@code java.version} takes the form {@code 1.8.0_31}, and with the regexp
+ * {@code (\d+)\.(\d+)\.(\d+)(_\d+)?} we would parse {@code 1, 8, 0, 31} and combine them into
+ * the final value {@code 1080031}.
+ *
+ * <p>Note that non-numeric characters matched by the regular expression will simply be
+ * ignored, and optional groups which do not match are treated as zero in the final version
+ * calculation.
+ *
+ * <p>One can instead parse {@code java.runtime.version} which takes the form {@code
+ * 1.8.0_31-b13}. Using regexp {@code (\d+)\.(\d+)\.(\d+)_(\d+)-b(\d+)} we would parse
+ * {@code 1, 8, 0, 31, 13} and combine them into a final value {@code 108003113}.
+ *
+ * <p>Other (or future) JVMs may provide different version properties which can be parsed as
+ * desired using this general scheme as long as the numbers appear from left to right in order
+ * of significance.
+ *
+ * @throws IllegalArgumentException if no system named {@code propName} exists, or if
+ * {@code propRegex} does not match the returned version string.
+ */
+ public static long parseJavaVersion (String propName, String propRegex) {
+ String verstr = System.getProperty(propName);
+ if (verstr == null) throw new IllegalArgumentException(
+ "No system property '" + propName + "'.");
+
+ long vers = VersionUtil.parseJavaVersion(propRegex, verstr);
+ if (vers == 0L) throw new IllegalArgumentException(
+ "Regexp '" + propRegex + "' does not match '" + verstr + "' (from " + propName + ")");
+ return vers;
+ }
+
+ /**
+ * Applies {@code appbase_override} or {@code appbase_domain} if they are set.
+ */
+ public static String overrideAppbase (String appbase) {
+ String appbaseOverride = appbaseOverride();
+ if (appbaseOverride != null) {
+ return appbaseOverride;
+ } else {
+ return replaceDomain(appbase);
+ }
+ }
+
+ /**
+ * If appbase_domain property is set, replace the domain on the provided string.
+ */
+ public static String replaceDomain (String appbase)
+ {
+ String appbaseDomain = appbaseDomain();
+ if (appbaseDomain != null) {
+ Matcher m = Pattern.compile("(https?://[^/]+)(.*)").matcher(appbase);
+ appbase = m.replaceAll(appbaseDomain + "$2");
+ }
+ return appbase;
+ }
+}
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