package com.rarchives.ripme.ui;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import javax.swing.JLabel;
import org.apache.log4j.Logger;
import org.json.JSONArray;
import org.json.JSONObject;
import org.jsoup.Connection.Response;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
public class UpdateUtils {
private static final Logger logger = Logger.getLogger(UpdateUtils.class);
private static final String DEFAULT_VERSION = "100.0.0";
private static final String updateJsonURL = "http://rarchives.com/ripme.json";
private static final String updateJarURL = "http://rarchives.com/ripme.jar";
private static final String mainFileName = "ripme.jar";
private static final String updateFileName = "ripme.jar.update";
public static String getThisJarVersion() {
String thisVersion = UpdateUtils.class.getPackage().getImplementationVersion();
if (thisVersion == null) {
// Version is null if we're not running from the JAR
thisVersion = DEFAULT_VERSION; ; // Super-high version number
}
return thisVersion;
}
public static void updateProgram(JLabel configUpdateLabel) {
configUpdateLabel.setText("Checking for update...:");
Document doc = null;
try {
doc = Jsoup.connect(UpdateUtils.updateJsonURL)
.ignoreContentType(true)
.get();
} catch (IOException e) {
configUpdateLabel.setText("Error while fetching update: " + e.getMessage());
logger.error("Error while fetching update: ", e);
return;
}
String jsonString = doc.body().html().replaceAll(""", "\"");
JSONObject json = new JSONObject(jsonString);
JSONArray jsonChangeList = json.getJSONArray("changeList");
configUpdateLabel.setText("Most recent changes:");
for (int i = 0; i < jsonChangeList.length(); i++) {
String change = jsonChangeList.getString(i);
configUpdateLabel.setText(configUpdateLabel.getText() + "
+ " + change);
}
String latestVersion = json.getString("latestVersion");
if (UpdateUtils.isNewerVersion(latestVersion)) {
configUpdateLabel.setText("Newer version found!
" + configUpdateLabel.getText() + "");
logger.info("New version found, downloading...");
try {
UpdateUtils.downloadJarAndReplace(updateJarURL);
} catch (IOException e) {
configUpdateLabel.setText("Error while updating: " + e.getMessage());
logger.error("Error while updating: ", e);
return;
}
} else {
configUpdateLabel.setText("Running latest version: " + UpdateUtils.getThisJarVersion());
logger.info("Running latest version: " + UpdateUtils.getThisJarVersion());
}
}
private static boolean isNewerVersion(String latestVersion) {
int[] oldVersions = versionStringToInt(getThisJarVersion());
int[] newVersions = versionStringToInt(latestVersion);
if (oldVersions.length < newVersions.length) {
System.err.println("Calculated: " + oldVersions + " < " + latestVersion);
return true;
}
for (int i = 0; i < oldVersions.length; i++) {
if (newVersions[i] > oldVersions[i]) {
logger.debug("oldVersion " + getThisJarVersion() + " < latestVersion" + latestVersion);
return true;
}
else if (newVersions[i] < oldVersions[i]) {
logger.debug("oldVersion " + getThisJarVersion() + " > latestVersion " + latestVersion);
return false;
}
else {
continue;
}
}
// At this point, the version numbers are exactly the same.
// Assume any additional changes to the version text means a new version
return !(latestVersion.equals(getThisJarVersion()));
}
private static int[] versionStringToInt(String version) {
String strippedVersion = version.split("-")[0];
String[] strVersions = strippedVersion.split("\\.");
int[] intVersions = new int[strVersions.length];
for (int i = 0; i < strVersions.length; i++) {
intVersions[i] = Integer.parseInt(strVersions[i]);
}
return intVersions;
}
private static void downloadJarAndReplace(String updateJarURL)
throws IOException {
Response response;
response = Jsoup.connect(updateJarURL)
.ignoreContentType(true)
.timeout(60000)
.maxBodySize(1024 * 1024 * 100)
.execute();
FileOutputStream out = new FileOutputStream(updateFileName);
out.write(response.bodyAsBytes());
out.close();
Runtime.getRuntime().exec(new String[] {"java", "-jar", updateFileName});
System.exit(0);
}
public static void moveUpdatedJar() {
File newFile = new File(updateFileName);
File oldFile = new File(mainFileName);
if (!newFile.exists()) {
// Can't update without .update file
return;
}
if (oldFile.exists()) {
logger.info("Deleting existing .jar file: " + oldFile);
try {
oldFile.delete();
} catch (Exception e) {
logger.error("Failed to delete old jar file: " + oldFile);
return;
}
}
boolean success = newFile.renameTo(oldFile);
if (!success) {
logger.error("Failed to rename file from " + newFile.getAbsolutePath() + " to " + oldFile.getAbsolutePath());
return;
}
try {
logger.debug("Executing jar " + oldFile.getName());
Runtime.getRuntime().exec(new String[] {"java", "-jar", oldFile.getName()});
logger.info("Started new version, quitting old version...");
System.exit(0);
} catch (IOException e) {
logger.error("Error while executing new jar " + newFile, e);
return;
}
}
}