diff options
Diffstat (limited to 'OpenKeychain/src/main/java/org/sufficientlysecure/keychain')
-rw-r--r-- | OpenKeychain/src/main/java/org/sufficientlysecure/keychain/keyimport/FileImportCache.java | 97 | ||||
-rw-r--r-- | OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/FileImportCache.java | 179 |
2 files changed, 179 insertions, 97 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/keyimport/FileImportCache.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/keyimport/FileImportCache.java deleted file mode 100644 index 08b8afae7..000000000 --- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/keyimport/FileImportCache.java +++ /dev/null @@ -1,97 +0,0 @@ -/* - * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -package org.sufficientlysecure.keychain.keyimport; - -import android.content.Context; -import android.os.Bundle; -import android.os.Parcel; - -import org.sufficientlysecure.keychain.KeychainApplication; - -import java.io.File; -import java.io.FileInputStream; -import java.io.FileOutputStream; -import java.io.IOException; -import java.util.ArrayList; -import java.util.List; - -/** - * When sending large data (over 1MB) through Androids Binder IPC you get - * JavaBinder E !!! FAILED BINDER TRANSACTION !!! - * <p/> - * To overcome this problem, we cache large Parcelables into a file in our private cache directory - * instead of sending them through IPC. - */ -public class FileImportCache { - - private Context mContext; - - private static final String FILENAME = "key_import.pcl"; - private static final String BUNDLE_DATA = "data"; - - public FileImportCache(Context context) { - this.mContext = context; - } - - public void writeCache(ArrayList<ParcelableKeyRing> selectedEntries) throws IOException { - Bundle in = new Bundle(); - in.putParcelableArrayList(BUNDLE_DATA, selectedEntries); - File cacheDir = mContext.getCacheDir(); - if (cacheDir == null) { - // https://groups.google.com/forum/#!topic/android-developers/-694j87eXVU - throw new IOException("cache dir is null!"); - } - File tempFile = new File(mContext.getCacheDir(), FILENAME); - - FileOutputStream fos = new FileOutputStream(tempFile); - Parcel p = Parcel.obtain(); // creating empty parcel object - in.writeToParcel(p, 0); // saving bundle as parcel - fos.write(p.marshall()); // writing parcel to file - fos.flush(); - fos.close(); - } - - public List<ParcelableKeyRing> readCache() throws IOException { - Parcel parcel = Parcel.obtain(); // creating empty parcel object - Bundle out; - File cacheDir = mContext.getCacheDir(); - if (cacheDir == null) { - // https://groups.google.com/forum/#!topic/android-developers/-694j87eXVU - throw new IOException("cache dir is null!"); - } - - File tempFile = new File(cacheDir, FILENAME); - try { - FileInputStream fis = new FileInputStream(tempFile); - byte[] array = new byte[(int) fis.getChannel().size()]; - fis.read(array, 0, array.length); - fis.close(); - - parcel.unmarshall(array, 0, array.length); - parcel.setDataPosition(0); - out = parcel.readBundle(KeychainApplication.class.getClassLoader()); - out.putAll(out); - - return out.getParcelableArrayList(BUNDLE_DATA); - } finally { - parcel.recycle(); - // delete temp file - tempFile.delete(); - } - } -} diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/FileImportCache.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/FileImportCache.java new file mode 100644 index 000000000..e09cdd502 --- /dev/null +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/FileImportCache.java @@ -0,0 +1,179 @@ +/* + * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +package org.sufficientlysecure.keychain.util; + +import android.content.Context; +import android.os.Parcel; +import android.os.Parcelable; + +import org.sufficientlysecure.keychain.Constants; +import org.sufficientlysecure.keychain.KeychainApplication; +import org.sufficientlysecure.keychain.util.Log; + +import java.io.File; +import java.io.FileInputStream; +import java.io.FileOutputStream; +import java.io.IOException; +import java.io.ObjectInputStream; +import java.io.ObjectOutputStream; +import java.util.ArrayList; +import java.util.Iterator; +import java.util.List; + +/** + * When sending large data (over 1MB) through Androids Binder IPC you get + * JavaBinder E !!! FAILED BINDER TRANSACTION !!! + * <p/> + * To overcome this problem, we cache large Parcelables into a file in our private cache directory + * instead of sending them through IPC. + */ +public class FileImportCache<E extends Parcelable> { + + private Context mContext; + + private static final String FILENAME = "key_import.pcl"; + + public FileImportCache(Context context) { + this.mContext = context; + } + + public void writeCache(ArrayList<E> selectedEntries) throws IOException { + writeCache(selectedEntries.iterator()); + } + + public void writeCache(Iterator<E> it) throws IOException { + + File cacheDir = mContext.getCacheDir(); + if (cacheDir == null) { + // https://groups.google.com/forum/#!topic/android-developers/-694j87eXVU + throw new IOException("cache dir is null!"); + } + + File tempFile = new File(mContext.getCacheDir(), FILENAME); + + ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(tempFile)); + + while (it.hasNext()) { + E ring = it.next(); + Parcel p = Parcel.obtain(); // creating empty parcel object + p.writeParcelable(ring, 0); // saving bundle as parcel + oos.writeObject(p.marshall()); // writing parcel to file + p.recycle(); + } + + oos.close(); + + } + + public List<E> readCacheIntoList() throws IOException { + ArrayList<E> result = new ArrayList<E>(); + Iterator<E> it = readCache(); + while (it.hasNext()) { + result.add(it.next()); + } + return result; + } + + public Iterator<E> readCache() throws IOException { + + File cacheDir = mContext.getCacheDir(); + if (cacheDir == null) { + // https://groups.google.com/forum/#!topic/android-developers/-694j87eXVU + throw new IOException("cache dir is null!"); + } + + final File tempFile = new File(cacheDir, FILENAME); + final ObjectInputStream ois = new ObjectInputStream(new FileInputStream(tempFile)); + + return new Iterator<E>() { + + E mRing = null; + boolean closed = false; + + private void readNext() { + if (mRing != null || closed) { + Log.e(Constants.TAG, "err!"); + return; + } + + try { + if (ois.available() == 0) { + return; + } + + byte[] data = (byte[]) ois.readObject(); + Log.e(Constants.TAG, "bla"); + if (data == null) { + if (!closed) { + closed = true; + ois.close(); + tempFile.delete(); + } + return; + } + + Parcel parcel = Parcel.obtain(); // creating empty parcel object + parcel.unmarshall(data, 0, data.length); + parcel.setDataPosition(0); + mRing = parcel.readParcelable(KeychainApplication.class.getClassLoader()); + parcel.recycle(); + } catch (ClassNotFoundException e) { + Log.e(Constants.TAG, "Encountered ClassNotFoundException during cache read, this is a bug!"); + } catch (IOException e) { + Log.e(Constants.TAG, "Encountered IOException during cache read!"); + } + + } + + @Override + public boolean hasNext() { + readNext(); + return mRing != null; + } + + @Override + public E next() { + readNext(); + try { + return mRing; + } finally { + mRing = null; + } + } + + @Override + public void remove() { + throw new UnsupportedOperationException(); + } + + @Override + public void finalize() throws Throwable { + super.finalize(); + if (!closed) { + try { + ois.close(); + tempFile.delete(); + } catch (IOException e) { + // never mind + } + } + } + + }; + } +} |