package org.fdroid.fdroid.localrepo;
import android.app.IntentService;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import org.apache.commons.io.FileUtils;
import org.fdroid.fdroid.FDroidApp;
import org.fdroid.fdroid.Utils;
import org.fdroid.fdroid.data.App;
import java.io.File;
import java.io.IOException;
import java.security.cert.CertificateEncodingException;
/**
* An {@link IntentService} subclass for generating cached info about the installed APKs
* which are available for swapping. It does not cache system apps, since those are
* rarely swapped. This is meant to start running when {@link SwapService} starts.
* <p>
* This could probably be replaced by {@link org.fdroid.fdroid.data.InstalledAppProvider}
* if that contained all of the info to generate complete {@link App} and
* {@link org.fdroid.fdroid.data.Apk} instances.
*/
public class CacheSwapAppsService extends IntentService {
private static final String TAG = "CacheSwapAppsService";
private static final String ACTION_PARSE_APP = "org.fdroid.fdroid.localrepo.action.PARSE_APP";
public CacheSwapAppsService() {
super("CacheSwapAppsService");
}
/**
* Parse the locally installed APK for {@code packageName} and save its XML
* to the APK XML cache.
*/
private static void parseApp(Context context, String packageName) {
Intent intent = new Intent();
intent.setData(Utils.getPackageUri(packageName));
intent.setClass(context, CacheSwapAppsService.class);
intent.setAction(ACTION_PARSE_APP);
context.startService(intent);
}
/**
* Parse all of the locally installed APKs into a memory cache, starting
* with the currently selected apps. APKs that are already parsed in the
* {@code index.jar} file will be read from that file.
*/
public static void startCaching(Context context) {
File indexJarFile = LocalRepoManager.get(context).getIndexJar();
PackageManager pm = context.getPackageManager();
for (ApplicationInfo applicationInfo : pm.getInstalledApplications(0)) {
if (applicationInfo.publicSourceDir.startsWith(FDroidApp.SYSTEM_DIR_NAME)) {
continue;
}
if (!indexJarFile.exists()
|| FileUtils.isFileNewer(new File(applicationInfo.sourceDir), indexJarFile)) {
parseApp(context, applicationInfo.packageName);
}
}
}
@Override
protected void onHandleIntent(Intent intent) {
android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_LOWEST);
if (intent == null || !ACTION_PARSE_APP.equals(intent.getAction())) {
Utils.debugLog(TAG, "received bad Intent: " + intent);
return;
}
try {
PackageManager pm = getPackageManager();
String packageName = intent.getData().getSchemeSpecificPart();
App app = new App(this, pm, packageName);
SwapService.putAppInCache(packageName, app);
} catch (CertificateEncodingException | IOException | PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
}
}