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Refactor SettingsHelper and move read/write functions to a new class

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This commit is contained in:
Jakob Nixdorf 2017-07-05 08:34:11 +02:00
parent 159c28dd0d
commit 58ef2bc2ff
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2 changed files with 87 additions and 69 deletions
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50
app/src/main/java/org/shadowice/flocke/andotp/FileHelper.java Normal file
View file

@ -0,0 +1,50 @@
package org.shadowice.flocke.andotp;
import android.content.Context;
import android.net.Uri;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
public class FileHelper {
public static String readFileToString(Context context, Uri file) {
StringBuilder stringBuilder = new StringBuilder();
try {
InputStream inputStream = context.getContentResolver().openInputStream(file);
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
String line;
while ((line = reader.readLine()) != null) {
stringBuilder.append(line);
}
reader.close();
inputStream.close();
} catch (Exception error) {
error.printStackTrace();
}
return(stringBuilder.toString());
}
public static boolean writeStringToFile(Context context, Uri file, String content) {
boolean success = true;
try {
OutputStream outputStream = context.getContentResolver().openOutputStream(file);
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(outputStream));
writer.write(content.toString());
writer.close();
outputStream.close();
} catch (Exception error) {
success = false;
error.printStackTrace();
}
return success;
}
}

106
app/src/main/java/org/shadowice/flocke/andotp/SettingsHelper.java
View file

@ -46,9 +46,19 @@ public class SettingsHelper {
public static final String KEY_FILE = "otp.key";
public static final String SETTINGS_FILE = "secrets.dat";
public static void store(Context context, JSONArray json) {
public static void store(Context context, ArrayList<Entry> entries) {
JSONArray a = new JSONArray();
for(Entry e: entries){
try {
a.put(e.toJSON());
} catch (Exception error) {
error.printStackTrace();
}
}
try {
byte[] data = json.toString().getBytes();
byte[] data = a.toString().getBytes();
SecretKey key = EncryptionHelper.loadOrGenerateKeys(context, new File(context.getFilesDir() + "/" + KEY_FILE));
data = EncryptionHelper.encrypt(key,data);
@ -60,28 +70,19 @@ public class SettingsHelper {
}
}
public static void store(Context context, ArrayList<Entry> entries){
JSONArray a = new JSONArray();
for(Entry e: entries){
try {
a.put(e.toJSON());
} catch (Exception error) {
error.printStackTrace();
}
}
store(context, a);
}
public static ArrayList<Entry> load(Context context){
ArrayList<Entry> entries = new ArrayList<>();
try {
JSONArray a = readJSON(context);
byte[] data = readFully(new File(context.getFilesDir() + "/" + SETTINGS_FILE));
for (int i = 0; i < a.length(); i++) {
entries.add(new Entry(a.getJSONObject(i)));
SecretKey key = EncryptionHelper.loadOrGenerateKeys(context, new File(context.getFilesDir() + "/" + KEY_FILE));
data = EncryptionHelper.decrypt(key, data);
JSONArray json = new JSONArray(new String(data));
for (int i = 0; i < json.length(); i++) {
entries.add(new Entry(json.getJSONObject(i)));
}
} catch (Exception error) {
error.printStackTrace();
@ -90,73 +91,40 @@ public class SettingsHelper {
return entries;
}
public static JSONArray readJSON(Context context) {
public static boolean exportAsJSON(Context context, Uri file) {
ArrayList<Entry> entries = load(context);
JSONArray json = new JSONArray();
try {
byte[] data = readFully(new File(context.getFilesDir() + "/" + SETTINGS_FILE));
SecretKey key = EncryptionHelper.loadOrGenerateKeys(context, new File(context.getFilesDir() + "/" + KEY_FILE));
data = EncryptionHelper.decrypt(key, data);
json = new JSONArray(new String(data));
}
catch (Exception error) {
error.printStackTrace();
for(Entry e: entries){
try {
json.put(e.toJSON());
} catch (Exception error) {
error.printStackTrace();
}
}
return json;
}
public static boolean exportAsJSON(Context context, Uri file) {
JSONArray data = readJSON(context);
boolean success = true;
try {
OutputStream outputStream = context.getContentResolver().openOutputStream(file);
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(outputStream));
writer.write(data.toString());
writer.close();
outputStream.close();
} catch (Exception error) {
success = false;
error.printStackTrace();
}
return success;
return FileHelper.writeStringToFile(context, file, json.toString());
}
public static boolean importFromJSON(Context context, Uri file) {
boolean success = true;
StringBuilder stringBuilder = new StringBuilder();
String content = FileHelper.readFileToString(context, file);
ArrayList<Entry> entries = new ArrayList<>();
try {
InputStream inputStream = context.getContentResolver().openInputStream(file);
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
String line;
while ((line = reader.readLine()) != null) {
stringBuilder.append(line);
JSONArray json = new JSONArray(content);
for (int i = 0; i < json.length(); i++) {
entries.add(new Entry(json.getJSONObject(i)));
}
reader.close();
inputStream.close();
} catch (Exception error) {
success = false;
error.printStackTrace();
}
String content = stringBuilder.toString();
JSONArray json = null;
try {
json = new JSONArray(content);
} catch (Exception error) {
success = false;
error.printStackTrace();
}
store(context, json);
store(context, entries);
return success;
}