/
InternalSubCreator.java
657 lines (587 loc) · 32.1 KB
/
InternalSubCreator.java
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package net.ME1312.SubServers.Bungee.Host.Internal;
import net.ME1312.Galaxi.Library.Config.YAMLConfig;
import net.ME1312.Galaxi.Library.Config.YAMLSection;
import net.ME1312.Galaxi.Library.Container.ContainedPair;
import net.ME1312.Galaxi.Library.Container.Container;
import net.ME1312.Galaxi.Library.Container.Pair;
import net.ME1312.Galaxi.Library.Container.Value;
import net.ME1312.Galaxi.Library.Directories;
import net.ME1312.Galaxi.Library.Map.ObjectMap;
import net.ME1312.Galaxi.Library.Map.ObjectMapValue;
import net.ME1312.Galaxi.Library.Try;
import net.ME1312.Galaxi.Library.Util;
import net.ME1312.Galaxi.Library.Version.Version;
import net.ME1312.SubServers.Bungee.Event.SubCreateEvent;
import net.ME1312.SubServers.Bungee.Event.SubCreatedEvent;
import net.ME1312.SubServers.Bungee.Host.*;
import net.ME1312.SubServers.Bungee.Host.SubServer.StopAction;
import net.ME1312.SubServers.Bungee.Library.Compatibility.Logger;
import net.ME1312.SubServers.Bungee.Library.Exception.InvalidServerException;
import net.ME1312.SubServers.Bungee.Library.Exception.SubCreatorException;
import net.ME1312.SubServers.Bungee.Library.ReplacementScanner;
import net.ME1312.SubServers.Bungee.SubAPI;
import net.ME1312.SubServers.Bungee.SubProxy;
import com.google.common.collect.Range;
import com.google.gson.Gson;
import net.md_5.bungee.api.ChatColor;
import java.io.*;
import java.lang.reflect.InvocationTargetException;
import java.net.InetSocketAddress;
import java.net.URL;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.LinkOption;
import java.nio.file.StandardCopyOption;
import java.security.MessageDigest;
import java.util.*;
import java.util.function.Consumer;
import java.util.regex.Pattern;
import static java.util.logging.Level.INFO;
import static java.util.logging.Level.WARNING;
/**
* Internal SubCreator Class
*/
@SuppressWarnings("unchecked")
public class InternalSubCreator extends SubCreator {
private HashMap<String, ServerTemplate> templates = new HashMap<String, ServerTemplate>();
private InternalHost host;
private Range<Integer> ports;
private Value<Boolean> log;
private String gitBash;
private TreeMap<String, CreatorTask> thread;
private class CreatorTask extends Thread {
private final UUID player;
private final SubServer update;
private final String name;
private final ServerTemplate template;
private final Version version;
private final int port;
private final String prefix;
private final InternalSubLogger log;
private final HashMap<String, String> replacements;
private final Consumer<SubServer> callback;
private Process process;
private CreatorTask(UUID player, String name, ServerTemplate template, Version version, int port, Consumer<SubServer> callback) {
super("SubServers.Bungee::Internal_SubCreator_Process_Handler(" + name + ')');
this.player = player;
this.update = null;
this.name = name;
this.template = template;
this.version = version;
this.port = port;
this.log = new InternalSubLogger(null, this, prefix = name + File.separator + "Creator", InternalSubCreator.this.log, null);
this.replacements = new HashMap<String, String>();
this.callback = callback;
}
private CreatorTask(UUID player, SubServer server, ServerTemplate template, Version version, Consumer<SubServer> callback) {
super("SubServers.Bungee::Internal_SubCreator_Process_Handler(" + server.getName() + ')');
this.player = player;
this.update = server;
this.name = server.getName();
this.template = template;
this.version = version;
this.port = server.getAddress().getPort();
this.log = new InternalSubLogger(null, this, prefix = name + File.separator + "Updater", InternalSubCreator.this.log, null);
this.replacements = new HashMap<String, String>();
this.callback = callback;
}
private ObjectMap<String> build(File dir, ServerTemplate template, List<ServerTemplate> history, List<ServerTemplate> stack) throws SubCreatorException {
ObjectMap<String> server = new ObjectMap<String>();
Version version = this.version;
HashMap<String, String> var = new HashMap<String, String>();
boolean error = false;
if (stack.contains(template)) throw new IllegalStateException("Infinite template import loop detected");
stack.add(template);
for (String other : template.getBuildOptions().getStringList("Import", new ArrayList<String>())) {
if (templates.containsKey(other.toLowerCase())) {
final ServerTemplate ot = templates.get(other.toLowerCase());
if (ot.isEnabled()) {
if (version != null || !ot.requiresVersion()) {
if (update == null || ot.canUpdate()) {
if (!history.contains(ot)) {
server.setAll(this.build(dir, ot, history, stack));
} else {
log.log(WARNING, "Skipping template that is already loaded: " + other);
}
} else {
log.log(WARNING, "Skipping template that cannot be run in update mode: " + other);
}
} else {
log.log(WARNING, "Skipping template that requires extra versioning information: " + other);
}
} else {
log.log(WARNING, "Skipping disabled template: " + other);
}
} else {
log.log(WARNING, "Skipping missing template: " + other);
}
}
history.add(template);
stack.remove(template);
server.setAll(template.getConfigOptions());
try {
log.log(INFO, "Loading" + ((template.isDynamic())?" Dynamic":"") + " Template: " + template.getDisplayName());
updateDirectory(template.getDirectory(), dir, template.getBuildOptions().getBoolean("Update-Files", false));
for (ObjectMapValue<String> replacement : template.getBuildOptions().getMap("Replacements", new ObjectMap<>()).getValues()) if (!replacement.isNull()) {
replacements.put(replacement.getHandle().toLowerCase().replace('-', '_').replace(' ', '_'), replacement.asString());
}
var.putAll(replacements);
var.put("java", System.getProperty("java.home") + File.separator + "bin" + File.separator + "java");
var.put("mode", (update == null)? "CREATE" : ((CreatorTask.this.template.equals(update.getTemplate()))?"UPDATE":"SWITCH"));
if (player != null) var.put("player", player.toString().toUpperCase());
else var.remove("player");
var.put("name", name);
var.put("host", host.getName());
var.put("template", template.getName());
var.put("type", template.getType().toString().toUpperCase());
if (version != null) var.put("version", version.toString());
else var.remove("version");
var.put("address", host.getAddress().getHostAddress());
var.put("port", Integer.toString(port));
switch (template.getType()) {
case SPONGE:
case FORGE:
if (version != null) {
log.log(INFO, "Searching Versions...");
ObjectMap<String> spversionmanifest = new ObjectMap<String>(new Gson().fromJson("{\"versions\":" + Util.readAll(new BufferedReader(new InputStreamReader(new URL("https://dl-api.spongepowered.org/v1/org.spongepowered/sponge" + ((template.getType() == ServerType.FORGE)?"forge":"vanilla") + "/downloads?type=stable&minecraft=" + version).openStream(), Charset.forName("UTF-8")))) + '}', Map.class));
ObjectMap<String> spprofile = null;
Version spversion = null;
for (ObjectMap<String> profile : spversionmanifest.getMapList("versions")) {
if (profile.getMap("dependencies").getString("minecraft").equalsIgnoreCase(version.toString()) && (spversion == null || new Version(profile.getString("version")).compareTo(spversion) >= 0)) {
spprofile = profile;
spversion = new Version(profile.getString("version"));
}
}
if (spversion == null)
throw new InvalidServerException("Cannot find Sponge version for Minecraft " + version.toString());
log.log(INFO, "Found \"sponge" + ((template.getType() == ServerType.FORGE)?"forge":"vanilla") + "-" + spversion.toString() + '"');
if (template.getType() == ServerType.FORGE) {
Version mcfversion = new Version(((spprofile.getMap("dependencies").getString("forge").contains("-"))?"":spprofile.getMap("dependencies").getString("minecraft") + '-') + spprofile.getMap("dependencies").getString("forge"));
log.log(INFO, "Found \"forge-" + mcfversion.toString() + '"');
var.put("mcf_version", mcfversion.toString());
}
var.put("sp_version", spversion.toString());
}
break;
}
} catch (Exception e) {
e.printStackTrace();
}
if (template.getBuildOptions().contains("Executable")) {
File cache = null;
if (template.getBuildOptions().getBoolean("Use-Cache", true)) {
cache = new File(host.plugin.dir, "SubServers/Cache/Templates/" + template.getName());
cache.mkdirs();
var.put("cache", cache.getAbsolutePath());
}
var.put("source", dir.getAbsolutePath());
try {
log.log(INFO, "Launching Build Script...");
ProcessBuilder pb = new ProcessBuilder().command(Executable.parse(gitBash, template.getBuildOptions().getString("Executable"))).directory(dir);
pb.environment().putAll(var);
log.file = new File(dir, "SubCreator-" + template.getName() + ((version != null)?"-"+version.toString():"") + ".log");
process = pb.start();
log.process = process;
log.start();
process.waitFor();
Thread.sleep(250);
if (process.exitValue() != 0) error = true;
} catch (InterruptedException e) {
error = true;
} catch (Exception e) {
error = true;
e.printStackTrace();
}
if (cache != null) {
if (cache.isDirectory() && cache.listFiles().length == 0) cache.delete();
cache = new File(host.plugin.dir, "SubServers/Cache/Templates");
if (cache.isDirectory() && cache.listFiles().length == 0) cache.delete();
cache = new File(host.plugin.dir, "SubServers/Cache");
if (cache.isDirectory() && cache.listFiles().length == 0) cache.delete();
}
}
new File(dir, "template.yml").delete();
if (error) throw new SubCreatorException();
return server;
}
public void run() {
Runnable declaration = () -> {
replacements.put("player", (player == null)?"":player.toString());
replacements.put("name", name);
replacements.put("host", host.getName());
replacements.put("template", template.getName());
replacements.put("type", template.getType().toString());
replacements.put("version", (version != null)?version.toString():"");
replacements.put("address", host.getAddress().getHostAddress());
replacements.put("port", Integer.toString(port));
};
declaration.run();
File dir = (update != null)?new File(update.getFullPath()):new File(host.getPath(),
(template.getConfigOptions().contains("Directory"))?new ReplacementScanner(replacements).replace(template.getConfigOptions().getString("Directory")).toString():name);
ObjectMap<String> server = new ObjectMap<String>();
ObjectMap<String> config;
try {
log.init();
config = build(dir, template, new LinkedList<>(), new LinkedList<>());
} catch (SubCreatorException e) {
config = null;
} catch (Exception e) {
config = null;
e.printStackTrace();
} finally {
log.destroy();
}
declaration.run();
ReplacementScanner replacements = new ReplacementScanner(this.replacements);
if (config != null) {
try {
if (template.getBuildOptions().getBoolean("Install-Client", true)) generateClient(dir, template.getType(), name);
LinkedList<String> masks = new LinkedList<>();
masks.add("/server.properties");
masks.addAll(template.getBuildOptions().getStringList("Replace", Collections.emptyList()));
replacements.replace(dir, masks.toArray(new String[0]));
} catch (Exception e) {
config = null;
e.printStackTrace();
}
}
if (config != null) {
try {
Logger.get(prefix).info("Saving...");
SubServer subserver = update;
if (update == null || update.getTemplate() != template || template.getBuildOptions().getBoolean("Update-Settings", false)) {
if (host.plugin.exServers.keySet().contains(name.toLowerCase()))
host.plugin.exServers.remove(name.toLowerCase());
config = new ObjectMap<String>((Map<String, ?>) replacements.replace(config.get()));
if (config.contains("Directory") && (update != null || !template.getConfigOptions().contains("Directory"))) config.remove("Directory");
if (update == null) {
server.set("Enabled", true);
server.set("Display", "");
server.set("Host", host.getName());
server.set("Template", template.getName());
server.set("Group", new ArrayList<String>());
server.set("Port", port);
server.set("Motd", "Some SubServer");
server.set("Log", true);
server.set("Directory", "./" + name);
server.set("Executable", "java -Xmx1024M -jar " + template.getType().toString() + ".jar");
server.set("Stop-Command", "stop");
server.set("Stop-Action", "NONE");
server.set("Run-On-Launch", false);
server.set("Restricted", false);
server.set("Incompatible", new ArrayList<String>());
server.set("Hidden", false);
} else {
server.setAll(host.plugin.servers.get().getMap("Servers").getMap(name, new HashMap<>()));
server.set("Template", template.getName());
}
server.setAll(config);
if (update != null) Try.all.run(() -> update.getHost().forceRemoveSubServer(name));
subserver = host.constructSubServer(name, server.getBoolean("Enabled"), port, ChatColor.translateAlternateColorCodes('&', Util.unescapeJavaString(server.getString("Motd"))), server.getBoolean("Log"),
server.getString("Directory"), server.getString("Executable"), server.getString("Stop-Command"), server.getBoolean("Hidden"), server.getBoolean("Restricted"));
if (server.getString("Display").length() > 0) subserver.setDisplayName(Util.unescapeJavaString(server.getString("Display")));
subserver.setTemplate(server.getString("Template"));
for (String group : server.getStringList("Group")) subserver.addGroup(group);
SubServer.StopAction action = Try.all.get(() -> SubServer.StopAction.valueOf(server.getString("Stop-Action").toUpperCase().replace('-', '_').replace(' ', '_')));
if (action != null) subserver.setStopAction(action);
if (server.contains("Extra")) for (String extra : server.getMap("Extra").getKeys())
subserver.addExtra(extra, server.getMap("Extra").getObject(extra));
if ((update != null && host.plugin.servers.get().getMap("Servers").contains(name)) ||
!(subserver.getStopAction() == StopAction.REMOVE_SERVER || subserver.getStopAction() == StopAction.RECYCLE_SERVER || subserver.getStopAction() == StopAction.DELETE_SERVER)) {
host.plugin.servers.get().getMap("Servers").set(name, server);
host.plugin.servers.save();
}
host.addSubServer(subserver);
if (update == null && template.getBuildOptions().getBoolean("Run-On-Finish", true))
subserver.start();
}
InternalSubCreator.this.thread.remove(name.toLowerCase());
host.plugin.getPluginManager().callEvent(new SubCreatedEvent(player, host, name, template, version, port, subserver, update != null, true));
callback.accept(subserver);
} catch (Exception e) {
e.printStackTrace();
host.plugin.getPluginManager().callEvent(new SubCreatedEvent(player, host, name, template, version, port, update, update != null, false));
callback.accept(null);
}
} else {
Logger.get(prefix).info("Couldn't build the server jar. Check the SubCreator logs for more detail.");
host.plugin.getPluginManager().callEvent(new SubCreatedEvent(player, host, name, template, version, port, update, update != null, false));
callback.accept(null);
}
InternalSubCreator.this.thread.remove(name.toLowerCase());
}
}
/**
* Creates an Internal SubCreator
*
* @param host Host
* @param ports The range of ports to auto-select from
* @param log Whether SubCreator should log to console
* @param gitBash The Git Bash directory
*/
public InternalSubCreator(InternalHost host, Range<Integer> ports, boolean log, String gitBash) {
if (!ports.hasLowerBound() || !ports.hasUpperBound()) throw new IllegalArgumentException("Port range is not bound");
Util.nullpo(host, ports, log, gitBash);
this.host = host;
this.ports = ports;
this.log = new Container<Boolean>(log);
this.gitBash = (System.getenv("ProgramFiles(x86)") == null)?Pattern.compile("%(ProgramFiles)\\(x86\\)%", Pattern.CASE_INSENSITIVE).matcher(gitBash).replaceAll("%$1%"):gitBash;
if (this.gitBash.endsWith(File.pathSeparator)) this.gitBash = this.gitBash.substring(0, this.gitBash.length() - 1);
this.thread = new TreeMap<String, CreatorTask>();
reload();
}
@Override
public void reload() {
templates.clear();
if (new File(host.plugin.dir, "SubServers/Templates").exists())
for (File file : new File(host.plugin.dir, "SubServers/Templates").listFiles()) {
try {
if (file.isDirectory() && !file.getName().endsWith(".x")) {
ObjectMap<String> config = (new File(file, "template.yml").exists())? new YAMLConfig(new File(file, "template.yml")).get().getMap("Template", new ObjectMap<String>()) : new ObjectMap<String>();
ServerTemplate template = loadTemplate(file.getName(), config.getBoolean("Enabled", true), config.getBoolean("Internal", false), config.getString("Icon", "::NULL::"), file, config.getMap("Build", new ObjectMap<String>()), config.getMap("Settings", new ObjectMap<String>()));
templates.put(file.getName().toLowerCase(), template);
if (config.getKeys().contains("Display")) template.setDisplayName(Util.unescapeJavaString(config.getString("Display")));
}
} catch (Exception e) {
Logger.get(host.getName()).severe("Couldn't load template: " + file.getName());
e.printStackTrace();
}
}
}
@SuppressWarnings("deprecation")
@Override
public boolean create(UUID player, String name, ServerTemplate template, Version version, Integer port, Consumer<SubServer> callback) {
Util.nullpo(name, template);
if (host.isAvailable() && host.isEnabled() && template.isEnabled() && !SubAPI.getInstance().getSubServers().keySet().contains(name.toLowerCase()) && !SubCreator.isReserved(name) && (version != null || !template.requiresVersion())) {
StackTraceElement[] origin = new Throwable().getStackTrace();
if (port == null) {
Value<Integer> i = new Container<Integer>(ports.lowerEndpoint() - 1);
port = Util.getNew(getAllReservedAddresses(), () -> {
do {
i.value(i.value() + 1);
if (i.value() > ports.upperEndpoint()) throw new IllegalStateException("There are no more ports available in range: " + ports.toString());
} while (!ports.contains(i.value()));
return new InetSocketAddress(host.getAddress(), i.value());
}).getPort();
}
CreatorTask task = new CreatorTask(player, name, template, version, port, server -> {
if (callback != null) try {
callback.accept(server);
} catch (Throwable e) {
Throwable ew = new InvocationTargetException(e);
ew.setStackTrace(origin);
ew.printStackTrace();
}
});
this.thread.put(name.toLowerCase(), task);
final SubCreateEvent event = new SubCreateEvent(player, host, name, template, version, port);
host.plugin.getPluginManager().callEvent(event);
if (!event.isCancelled()) {
task.start();
return true;
} else {
this.thread.remove(name.toLowerCase());
return false;
}
} else return false;
}
@SuppressWarnings("deprecation")
@Override
public boolean update(UUID player, SubServer server, ServerTemplate template, Version version, Consumer<Boolean> callback) {
Util.nullpo(server);
final ServerTemplate ft = (template == null)?server.getTemplate():template;
if (host.isAvailable() && host.isEnabled() && host == server.getHost() && server.isAvailable() && !server.isRunning() && ft != null && ft.isEnabled() && ft.canUpdate() && (version != null || !ft.requiresVersion())) {
StackTraceElement[] origin = new Throwable().getStackTrace();
((InternalSubServer) server).updating(true);
CreatorTask task = new CreatorTask(player, server, ft, version, x -> {
((InternalSubServer) server).updating(false);
if (callback != null) try {
callback.accept(x != null);
} catch (Throwable e) {
Throwable ew = new InvocationTargetException(e);
ew.setStackTrace(origin);
ew.printStackTrace();
}
});
this.thread.put(server.getName().toLowerCase(), task);
final SubCreateEvent event = new SubCreateEvent(player, server, ft, version);
host.plugin.getPluginManager().callEvent(event);
if (!event.isCancelled()) {
task.start();
return true;
} else {
this.thread.remove(server.getName().toLowerCase());
return false;
}
} else return false;
}
@Override
public void terminate() {
HashMap<String, CreatorTask> temp = new HashMap<String, CreatorTask>();
temp.putAll(thread);
for (String i : temp.keySet()) {
terminate(i);
}
}
@Override
public void terminate(String name) {
if (this.thread.keySet().contains(name.toLowerCase())) {
if (this.thread.get(name.toLowerCase()).process != null && this.thread.get(name.toLowerCase()).process.isAlive()) {
Executable.terminate(this.thread.get(name.toLowerCase()).process);
} else if (this.thread.get(name.toLowerCase()).isAlive()) {
this.thread.get(name.toLowerCase()).interrupt();
this.thread.remove(name.toLowerCase());
}
}
}
@Override
public void waitFor() throws InterruptedException {
HashMap<String, CreatorTask> temp = new HashMap<String, CreatorTask>();
temp.putAll(thread);
for (String i : temp.keySet()) {
waitFor(i);
}
}
@Override
public void waitFor(String name) throws InterruptedException {
while (this.thread.keySet().contains(name.toLowerCase()) && this.thread.get(name.toLowerCase()).isAlive()) {
Thread.sleep(250);
}
}
@Override
public Host getHost() {
return host;
}
@Override
public Range getPortRange() {
return ports;
}
@Override
public void setPortRange(Range<Integer> value) {
if (!value.hasLowerBound() || !value.hasUpperBound()) throw new IllegalArgumentException("Port range is not bound");
ports = value;
}
@Override
public String getBashDirectory() {
return gitBash;
}
@Override
public List<SubLogger> getLoggers() {
List<SubLogger> loggers = new ArrayList<SubLogger>();
HashMap<String, CreatorTask> temp = new HashMap<String, CreatorTask>();
temp.putAll(thread);
for (String i : temp.keySet()) {
loggers.add(getLogger(i));
}
return loggers;
}
@Override
public SubLogger getLogger(String name) {
return this.thread.get(name.toLowerCase()).log;
}
@Override
public boolean isLogging() {
return log.value();
}
@Override
public void setLogging(boolean value) {
Util.nullpo(value);
log.value(value);
}
@Override
public List<String> getReservedNames() {
return new ArrayList<String>(thread.keySet());
}
@Override
public List<Integer> getReservedPorts() {
List<Integer> ports = new ArrayList<Integer>();
for (CreatorTask task : thread.values()) ports.add(task.port);
return ports;
}
@Override
public Map<String, ServerTemplate> getTemplates() {
TreeMap<String, ServerTemplate> map = new TreeMap<String, ServerTemplate>();
for (Map.Entry<String, ServerTemplate> template : templates.entrySet()) {
if (!template.getValue().isInternal()) map.put(template.getKey(), template.getValue());
}
return map;
}
@Override
public ServerTemplate getTemplate(String name) {
Util.nullpo(name);
ServerTemplate template = templates.getOrDefault(name.toLowerCase(), null);
if (template == null || template.isInternal()) {
return null;
} else {
return template;
}
}
private static Pair<YAMLSection, Map<String, Object>> subdata = null;
private Map<String, Object> getSubData() {
if (subdata == null || host.plugin.config.get() != subdata.key()) {
Map<String, Object> map = new HashMap<String, Object>();
map.put("Address", host.plugin.config.get().getMap("Settings").getMap("SubData").getString("Address", "127.0.0.1").replace("0.0.0.0", "127.0.0.1"));
if (host.plugin.config.get().getMap("Settings").getMap("SubData").getString("Password", "").length() > 0) map.put("Password", host.plugin.config.get().getMap("Settings").getMap("SubData").getString("Password"));
subdata = new ContainedPair<>(host.plugin.config.get(), map);
}
return subdata.value();
}
private void generateClient(File dir, ServerType type, String name) throws IOException {
boolean installed = false;
if (type == ServerType.SPIGOT) {
installed = true;
if (!new File(dir, "plugins").exists()) new File(dir, "plugins").mkdirs();
if (!new File(dir, "plugins/SubServers.Client.jar").exists())
Util.copyFromJar(SubProxy.class.getClassLoader(), "net/ME1312/SubServers/Bungee/Library/Files/client.jar", new File(dir, "plugins/SubServers.Client.jar").getPath());
} else if (type == ServerType.FORGE || type == ServerType.SPONGE) {
installed = true;
if (!new File(dir, "mods").exists()) new File(dir, "mods").mkdirs();
if (!new File(dir, "mods/SubServers.Client.jar").exists())
Util.copyFromJar(SubProxy.class.getClassLoader(), "net/ME1312/SubServers/Bungee/Library/Files/client.jar", new File(dir, "mods/SubServers.Client.jar").getPath());
}
if (installed) {
YAMLSection config = new YAMLSection();
FileWriter writer = new FileWriter(new File(dir, "subdata.json"), false);
config.setAll(getSubData());
writer.write(config.toJSON().toString());
writer.close();
if (!new File(dir, "subdata.rsa.key").exists() && new File("SubServers/subdata.rsa.key").exists()) {
Files.copy(new File("SubServers/subdata.rsa.key").toPath(), new File(dir, "subdata.rsa.key").toPath());
}
}
}
private void updateDirectory(File from, File to, boolean overwrite) {
if (!to.exists()) {
Directories.copy(from, to);
} else if (from.isDirectory() && !Files.isSymbolicLink(from.toPath())) {
String files[] = from.list();
for (String file : files) {
File srcFile = new File(from, file);
File destFile = new File(to, file);
updateDirectory(srcFile, destFile, overwrite);
}
} else {
try {
if (overwrite && (from.length() != to.length() || !Arrays.equals(generateSHA256(to), generateSHA256(from)))) {
if (to.exists()) {
if (to.isDirectory()) Directories.delete(to);
else to.delete();
}
Files.copy(from.toPath(), to.toPath(), LinkOption.NOFOLLOW_LINKS, StandardCopyOption.REPLACE_EXISTING);
}
} catch (Exception e) {
e.printStackTrace();
}
}
} private byte[] generateSHA256(File file) throws Exception {
MessageDigest md = MessageDigest.getInstance("SHA-256");
FileInputStream fis = new FileInputStream(file);
byte[] dataBytes = new byte[4096];
int nread;
while ((nread = fis.read(dataBytes)) != -1) {
md.update(dataBytes, 0, nread);
}
fis.close();
return md.digest();
}
}