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// Copyright (C) 2012 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.gerrit.pgm.init;
import com.google.gerrit.launcher.GerritLauncher;
import com.google.gerrit.pgm.util.ConsoleUI;
import com.google.gerrit.server.config.SitePaths;
import com.google.gerrit.server.plugins.PluginLoader;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.jar.Attributes;
import java.util.jar.JarFile;
import java.util.jar.Manifest;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
@Singleton
public class InitPlugins implements InitStep {
private final static String PLUGIN_DIR = "WEB-INF/plugins/";
private final static String JAR = ".jar";
private final ConsoleUI ui;
private final SitePaths site;
@Inject
InitPlugins(final ConsoleUI ui, final SitePaths site) {
this.ui = ui;
this.site = site;
}
@Override
public void run() throws Exception {
ui.header("Plugins");
final File myWar;
try {
myWar = GerritLauncher.getDistributionArchive();
} catch (FileNotFoundException e) {
System.err.println("warn: Cannot find gerrit.war");
return;
}
boolean foundPlugin = false;
try {
final ZipFile zf = new ZipFile(myWar);
try {
final Enumeration<? extends ZipEntry> e = zf.entries();
while (e.hasMoreElements()) {
final ZipEntry ze = e.nextElement();
if (ze.isDirectory()) {
continue;
}
if (ze.getName().startsWith(PLUGIN_DIR) && ze.getName().endsWith(JAR)) {
if (!foundPlugin) {
if (!ui.yesno(false, "Prompt to install core plugins")) {
return;
}
foundPlugin = true;
}
final String pluginJarName = new File(ze.getName()).getName();
final String pluginName = pluginJarName.substring(0, pluginJarName.length() - JAR.length());
final InputStream in = zf.getInputStream(ze);
try {
final File tmpPlugin = PluginLoader.storeInTemp(pluginName, in, site);
final String pluginVersion = getVersion(tmpPlugin);
if (!ui.yesno(false, "Install plugin %s version %s", pluginName,
pluginVersion)) {
tmpPlugin.delete();
continue;
}
final File plugin = new File(site.plugins_dir, pluginJarName);
if (plugin.exists()) {
final String installedPluginVersion = getVersion(plugin);
if (!ui.yesno(false,
"version %s is already installed, overwrite it",
installedPluginVersion)) {
tmpPlugin.delete();
continue;
}
if (!plugin.delete()) {
throw new IOException("Failed to delete plugin " + pluginName
+ ": " + plugin.getAbsolutePath());
}
}
if (!tmpPlugin.renameTo(plugin)) {
throw new IOException("Failed to install plugin " + pluginName
+ ": " + tmpPlugin.getAbsolutePath() + " -> "
+ plugin.getAbsolutePath());
}
} finally {
in.close();
}
}
}
} finally {
zf.close();
}
} catch (IOException e) {
throw new IOException("Failure during plugin installation", e);
}
if (!foundPlugin) {
ui.message("No plugins found.");
}
}
private static String getVersion(final File plugin) throws IOException {
final JarFile jarFile = new JarFile(plugin);
try {
final Manifest manifest = jarFile.getManifest();
final Attributes main = manifest.getMainAttributes();
return main.getValue(Attributes.Name.IMPLEMENTATION_VERSION);
} finally {
jarFile.close();
}
}
}
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