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Make exporter usable by other things handling OutputStreams, like a

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facility to use the Android-wide Backup Service.
This commit is contained in:
danapple 2011-03-03 10:00:58 -06:00
parent fdb38da2e5
commit 9224876768
1 changed files with 38 additions and 17 deletions
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55
src/com/fsck/k9/preferences/StorageExporter.java
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@ -1,39 +1,62 @@
package com.fsck.k9.preferences;
import java.io.File;
import java.io.IOException;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.apache.commons.codec.binary.Base64;
import android.content.Context;
import android.content.SharedPreferences;
import android.util.Log;
import com.fsck.k9.Account;
import com.fsck.k9.K9;
import com.fsck.k9.Preferences;
import android.content.Context;
import android.content.SharedPreferences;
import android.util.Log;
public class StorageExporter {
//public static String VALIDITY = "K-9MailExport"; // Does outputting a fixed string in a known location make the encrypted data easier to break?
public static void exportPreferences(Context context, String uuid, String fileName, String encryptionKey) throws StorageImportExportException {
Log.i(K9.LOG_TAG, "Exporting preferences for account " + uuid + " to file " + fileName);
File outFile = new File(fileName);
OutputStream os = null;
try {
os = new FileOutputStream(outFile);
} catch (FileNotFoundException e) {
throw new StorageImportExportException("Unable to export settings", e);
}
try {
exportPrefererences(context, uuid, os, encryptionKey);
} finally {
if (os != null) {
try {
os.close();
} catch (Exception e) {
Log.i(K9.LOG_TAG, "Unable to close OutputStream for file " + fileName + ": " + e.getLocalizedMessage());
}
}
}
Log.i(K9.LOG_TAG, "Exported preferences for account " + uuid + " to file " + fileName + " which is size " + outFile.length());
}
public static void exportPrefererences(Context context, String uuid, OutputStream os, String encryptionKey) throws StorageImportExportException {
try {
Log.i(K9.LOG_TAG, "Exporting preferences for account " + uuid + " to OutputStream");
K9Krypto krypto = new K9Krypto(encryptionKey, K9Krypto.MODE.ENCRYPT);
File outFile = new File(fileName);
PrintWriter pf = new PrintWriter(outFile);
OutputStreamWriter sw = new OutputStreamWriter(os);
PrintWriter pf = new PrintWriter(sw);
long keysEvaluated = 0;
long keysExported = 0;
pf.println("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
// String testval = SimpleCrypto.encrypt(encryptionKey, VALIDITY);
pf.print("<k9settings version=\"1\"");
//pf.print(" validity=\"" + testval + "\"");
pf.println(">");
Log.i(K9.LOG_TAG, "Exporting preferences for account " + uuid + " to file " + fileName);
Preferences preferences = Preferences.getPreferences(context);
SharedPreferences storage = preferences.getPreferences();
@ -78,12 +101,10 @@ public class StorageExporter {
}
pf.println("</k9settings>");
pf.close();
pf.flush();
Log.i(K9.LOG_TAG, "Exported " + keysExported + " settings of " + keysEvaluated
+ " total for preferences for account " + uuid + " to file " + fileName + " which is size " + outFile.length());
} catch (IOException ie) {
throw new StorageImportExportException("Unable to export settings", ie);
+ " total for preferences for account " + uuid);
} catch (Exception e) {
throw new StorageImportExportException("Unable to encrypt settings", e);
}