2 // Getdown - application installer, patcher and launcher
3 // Copyright (C) 2004-2018 Getdown authors
4 // https://github.com/threerings/getdown/blob/master/LICENSE
6 package com.threerings.getdown.data;
8 import java.util.regex.Matcher;
9 import java.util.regex.Pattern;
11 import com.threerings.getdown.util.VersionUtil;
14 * This class encapsulates all system properties that are read and processed by Getdown. Don't
15 * stick a call to {@code System.getProperty} randomly into the code, put it in here and give it an
16 * accessor so that it's easy to see all of the secret system property arguments that Getdown makes
21 /** Configures the appdir (in lieu of passing it in argv). Usage: {@code -Dappdir=foo}. */
22 public static String appDir () {
23 return System.getProperty("appdir");
26 /** Configures the appid (in lieu of passing it in argv). Usage: {@code -Dappid=foo}. */
27 public static String appId () {
28 return System.getProperty("appid");
31 /** Configures the bootstrap appbase (used in lieu of providing a skeleton getdown.txt, and as
32 * a last resort fallback). Usage: {@code -Dappbase=URL}. */
33 public static String appBase () {
34 return System.getProperty("appbase");
37 /** If true, disables redirection of logging into {@code launcher.log}.
38 * Usage: {@code -Dno_log_redir}. */
39 public static boolean noLogRedir () {
40 return System.getProperty("no_log_redir") != null;
43 /** Overrides the domain on {@code appbase}. Usage: {@code -Dappbase_domain=foo}. */
44 public static String appbaseDomain () {
45 return System.getProperty("appbase_domain");
48 /** Overrides enter {@code appbase}. Usage: {@code -Dappbase_override=URL}. */
49 public static String appbaseOverride () {
50 return System.getProperty("appbase_override");
53 /** If true, Getdown installs the app without ever bringing up a UI (except in the event of an
54 * error). NOTE: it does not launch the app. See {@link #launchInSilent}.
55 * Usage: {@code -Dsilent}. */
56 public static boolean silent () {
57 return System.getProperty("silent") != null;
60 /** Instructs Getdown to install/update the app without ever bringing up a UI (except in the
61 * event of an error), and then launch it.
62 * Usage: {@code -Dsilent=launch}. */
63 public static boolean launchInSilent () {
64 return "launch".equals(System.getProperty("silent"));
68 * Instructs Getdown to launch the app without updating it, or ever bringing up a UI (except
69 * in the event of an error).
70 * Usage: {@code -Dsilent=noupdate}.
72 public static boolean noUpdate() {
73 return "noupdate".equals(System.getProperty("silent"));
76 /** If true, Getdown does not automatically install updates after downloading them. It waits
77 * for the application to call `Getdown.install`.
78 * Usage: {@code -Dno_install}. */
79 public static boolean noInstall () {
80 return System.getProperty("no_install") != null;
83 /** Specifies the delay (in minutes) to wait before starting the update and install process.
84 * Minimum delay is 0 minutes, or no delay (negative values are rounded up to 0 minutes).
85 * Maximum delay is 1 day, or 1440 minutes (larger values are rounded down to 1 day).
86 * Usage: {@code -Ddelay=N}. */
87 public static int startDelay () {
88 return Math.min(Math.max(Integer.getInteger("delay", 0), 0), 60 * 24);
91 /** If true, Getdown will not unpack {@code uresource} jars. Usage: {@code -Dno_unpack}. */
92 public static boolean noUnpack () {
93 return Boolean.getBoolean("no_unpack");
96 /** If true, Getdown will run the application in the same VM in which Getdown is running. If
97 * false (the default), Getdown will fork a new VM. Note that reusing the same VM prevents
98 * Getdown from configuring some launch-time-only VM parameters (like -mxN etc.).
99 * Usage: {@code -Ddirect}. */
100 public static boolean direct () {
101 return Boolean.getBoolean("direct");
104 /** Specifies the connection timeout (in seconds) to use when downloading control files from
105 * the server. This is chiefly useful when you are running in versionless mode and want Getdown
106 * to more quickly timeout its startup update check if the server with which it is
107 * communicating is not available. Usage: {@code -Dconnect_timeout=N}. */
108 public static int connectTimeout () {
109 return Integer.getInteger("connect_timeout", 0);
112 /** Specifies the read timeout (in seconds) to use when downloading all files from the server.
113 * The default is 30 seconds, meaning that if a download stalls for more than 30 seconds, the
114 * update process wil fail. Setting the timeout to zero (or a negative value) will disable it.
115 * Usage: {@code -Dread_timeout=N}. */
116 public static int readTimeout () {
117 return Integer.getInteger("read_timeout", 30);
120 /** Returns the number of threads used to perform digesting and verifying operations in
121 * parallel. Usage: {@code -Dthread_pool_size=N} */
122 public static int threadPoolSize () {
123 int defaultSize = Math.max(Runtime.getRuntime().availableProcessors()-1, 1);
124 return Integer.getInteger("thread_pool_size", defaultSize);
127 /** Parses a Java version system property using the supplied regular expression. The numbers
128 * extracted from the regexp will be placed in each consecutive hundreds position in the
131 * <p>For example, {@code java.version} takes the form {@code 1.8.0_31}, and with the regexp
132 * {@code (\d+)\.(\d+)\.(\d+)(_\d+)?} we would parse {@code 1, 8, 0, 31} and combine them into
133 * the final value {@code 1080031}.
135 * <p>Note that non-numeric characters matched by the regular expression will simply be
136 * ignored, and optional groups which do not match are treated as zero in the final version
139 * <p>One can instead parse {@code java.runtime.version} which takes the form {@code
140 * 1.8.0_31-b13}. Using regexp {@code (\d+)\.(\d+)\.(\d+)_(\d+)-b(\d+)} we would parse
141 * {@code 1, 8, 0, 31, 13} and combine them into a final value {@code 108003113}.
143 * <p>Other (or future) JVMs may provide different version properties which can be parsed as
144 * desired using this general scheme as long as the numbers appear from left to right in order
147 * @throws IllegalArgumentException if no system named {@code propName} exists, or if
148 * {@code propRegex} does not match the returned version string.
150 public static long parseJavaVersion (String propName, String propRegex) {
151 String verstr = System.getProperty(propName);
152 if (verstr == null) throw new IllegalArgumentException(
153 "No system property '" + propName + "'.");
155 long vers = VersionUtil.parseJavaVersion(propRegex, verstr);
156 if (vers == 0L) throw new IllegalArgumentException(
157 "Regexp '" + propRegex + "' does not match '" + verstr + "' (from " + propName + ")");
162 * Applies {@code appbase_override} or {@code appbase_domain} if they are set.
164 public static String overrideAppbase (String appbase) {
165 String appbaseOverride = appbaseOverride();
166 if (appbaseOverride != null) {
167 return appbaseOverride;
169 return replaceDomain(appbase);
174 * If appbase_domain property is set, replace the domain on the provided string.
176 public static String replaceDomain (String appbase)
178 String appbaseDomain = appbaseDomain();
179 if (appbaseDomain != null) {
180 Matcher m = Pattern.compile("(https?://[^/]+)(.*)").matcher(appbase);
181 appbase = m.replaceAll(appbaseDomain + "$2");