Joe Julian
117 lines
4.0 KiB
Java
117 lines
4.0 KiB
Java
package org.julianfamily.keepassgo;
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import android.content.Context;
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import android.util.JsonReader;
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import android.util.JsonWriter;
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import android.util.Log;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.OutputStreamWriter;
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import java.nio.charset.StandardCharsets;
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import java.time.Instant;
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import java.util.LinkedHashMap;
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import java.util.Map;
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final class AutofillBindingStore {
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private static final String TAG = "KeePassGOAutofill";
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private AutofillBindingStore() {
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}
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static String entryIDForTarget(Context context, String rawTarget) {
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Bindings bindings = read(context);
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return bindings.apps.getOrDefault(normalize(rawTarget), "");
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}
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static void rememberBinding(Context context, String rawTarget, String entryID) {
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String target = normalize(rawTarget);
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if (target.isEmpty() || entryID == null || entryID.trim().isEmpty()) {
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return;
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}
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Bindings bindings = read(context);
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bindings.updatedAt = Instant.now().toString();
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bindings.apps.put(target, entryID.trim());
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write(context, bindings);
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}
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private static Bindings read(Context context) {
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File path = path(context);
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if (!path.isFile()) {
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return new Bindings();
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}
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try (JsonReader reader = new JsonReader(new InputStreamReader(new FileInputStream(path), StandardCharsets.UTF_8))) {
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Bindings bindings = new Bindings();
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reader.beginObject();
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while (reader.hasNext()) {
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String name = reader.nextName();
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if ("updatedAt".equals(name)) {
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bindings.updatedAt = nextString(reader);
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continue;
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}
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if ("apps".equals(name)) {
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reader.beginObject();
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while (reader.hasNext()) {
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bindings.apps.put(normalize(reader.nextName()), nextString(reader));
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}
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reader.endObject();
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continue;
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}
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reader.skipValue();
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}
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reader.endObject();
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return bindings;
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} catch (IOException err) {
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Log.e(TAG, "failed to read autofill bindings", err);
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return new Bindings();
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}
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}
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private static void write(Context context, Bindings bindings) {
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File path = path(context);
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File parent = path.getParentFile();
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if (parent != null && !parent.exists() && !parent.mkdirs()) {
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Log.e(TAG, "failed to create autofill binding directory " + parent.getAbsolutePath());
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return;
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}
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try (JsonWriter writer = new JsonWriter(new OutputStreamWriter(new FileOutputStream(path, false), StandardCharsets.UTF_8))) {
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writer.setIndent(" ");
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writer.beginObject();
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writer.name("updatedAt").value(bindings.updatedAt);
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writer.name("apps");
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writer.beginObject();
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for (Map.Entry<String, String> entry : bindings.apps.entrySet()) {
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writer.name(entry.getKey()).value(entry.getValue());
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}
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writer.endObject();
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writer.endObject();
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} catch (IOException err) {
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Log.e(TAG, "failed to write autofill bindings", err);
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}
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}
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private static String nextString(JsonReader reader) throws IOException {
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if (reader.peek() == android.util.JsonToken.NULL) {
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reader.nextNull();
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return "";
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}
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return reader.nextString();
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}
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private static File path(Context context) {
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return new File(new File(context.getFilesDir(), "keepassgo"), "autofill-bindings.json");
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}
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private static String normalize(String rawTarget) {
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return rawTarget == null ? "" : rawTarget.trim();
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}
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private static final class Bindings {
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String updatedAt = "";
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final Map<String, String> apps = new LinkedHashMap<>();
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}
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}
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