fix qr code scanning, implement basic scanning of fingerprint only

OpenPGP-Keychain/res/values/strings.xml

@@ -320,6 +320,7 @@
     <string name="import_qr_code_start_with_one">Please start with QR Code with ID 1</string>
     <string name="import_qr_code_wrong">QR Code malformed! Please try again!</string>
     <string name="import_qr_code_finished">QR Code scanning finished!</string>
+    <string name="import_qr_code_too_short_fingerprint">Fingerprint contained in this QR Code is too short (&lt; 16 characters)</string>
     <string name="import_qr_scan_button">Scan QR Code with \'Barcode Scanner\'</string>
     <string name="import_nfc_text">To receive keys via NFC, the device needs to be unlocked.</string>
     <string name="import_nfc_help_button">Help</string>

OpenPGP-Keychain/src/org/sufficientlysecure/keychain/ui/ImportKeysQrCodeFragment.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ * Copyright (C) 2013-2014 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
@@ -18,9 +18,11 @@
 package org.sufficientlysecure.keychain.ui;
 
 import java.util.ArrayList;
+import java.util.Locale;
 
 import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.util.IntentIntegratorSupportV4;
 import org.sufficientlysecure.keychain.util.Log;
 
 import android.content.Intent;
@@ -35,7 +37,6 @@ import android.widget.TextView;
 import android.widget.Toast;
 
 import com.beardedhen.androidbootstrap.BootstrapButton;
-import com.google.zxing.integration.android.IntentIntegrator;
 import com.google.zxing.integration.android.IntentResult;
 
 public class ImportKeysQrCodeFragment extends Fragment {
@@ -75,7 +76,7 @@ public class ImportKeysQrCodeFragment extends Fragment {
             @Override
             public void onClick(View v) {
                 // scan using xzing's Barcode Scanner
-                new IntentIntegrator(getActivity()).initiateScan();
+                new IntentIntegratorSupportV4(ImportKeysQrCodeFragment.this).initiateScan();
             }
         });
 
@@ -92,21 +93,59 @@ public class ImportKeysQrCodeFragment extends Fragment {
     @Override
     public void onActivityResult(int requestCode, int resultCode, Intent data) {
         switch (requestCode & 0xFFFF) {
-        case IntentIntegrator.REQUEST_CODE: {
+        case IntentIntegratorSupportV4.REQUEST_CODE: {
-            IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode,
+            IntentResult scanResult = IntentIntegratorSupportV4.parseActivityResult(requestCode,
-                    data);
+                    resultCode, data);
             if (scanResult != null && scanResult.getFormatName() != null) {
 
-                Log.d(Constants.TAG, scanResult.getContents());
+                Log.d(Constants.TAG, "scanResult content: " + scanResult.getContents());
 
-                String[] parts = scanResult.getContents().split(",");
+                // look if it's fingerprint only
-
+                if (scanResult.getContents().toLowerCase(Locale.ENGLISH).startsWith("openpgp4fpr")) {
-                if (parts.length != 3) {
+                    importFingerprint(scanResult.getContents().toLowerCase(Locale.ENGLISH));
-                    Toast.makeText(getActivity(), R.string.import_qr_code_wrong, Toast.LENGTH_LONG)
-                            .show();
                     return;
                 }
 
+                // look if it is the whole key
+                String[] parts = scanResult.getContents().split(",");
+                if (parts.length == 3) {
+                    importParts(parts);
+                    return;
+                }
+
+                // fail...
+                Toast.makeText(getActivity(), R.string.import_qr_code_wrong, Toast.LENGTH_LONG)
+                        .show();
+            }
+
+            break;
+        }
+
+        default:
+            super.onActivityResult(requestCode, resultCode, data);
+
+            break;
+        }
+    }
+
+    private void importFingerprint(String uri) {
+        String fingerprint = uri.split(":")[1];
+
+        Log.d(Constants.TAG, "fingerprint: " + fingerprint);
+
+        if (fingerprint.length() < 16) {
+            Toast.makeText(getActivity(), R.string.import_qr_code_too_short_fingerprint,
+                    Toast.LENGTH_LONG).show();
+            return;
+        }
+
+        Intent queryIntent = new Intent(getActivity(), KeyServerQueryActivity.class);
+        queryIntent.setAction(KeyServerQueryActivity.ACTION_LOOK_UP_KEY_ID);
+        queryIntent.putExtra(KeyServerQueryActivity.EXTRA_FINGERPRINT, fingerprint);
+        startActivity(queryIntent);
+    }
+
+    private void importParts(String[] parts) {
         int counter = Integer.valueOf(parts[0]);
         int size = Integer.valueOf(parts[1]);
         String content = parts[2];
@@ -124,8 +163,8 @@ public class ImportKeysQrCodeFragment extends Fragment {
         }
 
         if (mScannedContent == null || counter > mScannedContent.length) {
-                    Toast.makeText(getActivity(), R.string.import_qr_code_start_with_one,
+            Toast.makeText(getActivity(), R.string.import_qr_code_start_with_one, Toast.LENGTH_LONG)
-                            Toast.LENGTH_LONG).show();
+                    .show();
             return;
         }
 
@@ -152,8 +191,8 @@ public class ImportKeysQrCodeFragment extends Fragment {
             missingString += String.valueOf(m + 1);
         }
 
-                String missingText = getResources().getQuantityString(
+        String missingText = getResources().getQuantityString(R.plurals.import_qr_code_missing,
-                        R.plurals.import_qr_code_missing, missing.size(), missingString);
+                missing.size(), missingString);
         mText.setText(missingText);
 
         // finished!
@@ -167,13 +206,4 @@ public class ImportKeysQrCodeFragment extends Fragment {
         }
     }
 
-            break;
-        }
-
-        default:
-            super.onActivityResult(requestCode, resultCode, data);
-
-            break;
-        }
-    }
 }

OpenPGP-Keychain/src/org/sufficientlysecure/keychain/ui/KeyServerQueryActivity.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012 Dominik Schürmann <dominik@dominikschuermann.de>
+ * Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de>
  * Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -66,23 +66,19 @@ public class KeyServerQueryActivity extends SherlockFragmentActivity {
             + "LOOK_UP_KEY_ID_AND_RETURN";
 
     public static final String EXTRA_KEY_ID = "key_id";
+    public static final String EXTRA_FINGERPRINT = "fingerprint";
 
     public static final String RESULT_EXTRA_TEXT = "text";
 
     private ListView mList;
-
     private EditText mQuery;
-
     private Button mSearch;
+    private Spinner mKeyServer;
 
     private KeyInfoListAdapter mAdapter;
 
-    private Spinner mKeyServer;
-
     private int mQueryType;
-
     private String mQueryString;
-
     private long mQueryId;
 
     private volatile List<KeyInfo> mSearchResult;
@@ -168,6 +164,12 @@ public class KeyServerQueryActivity extends SherlockFragmentActivity {
                 mQuery.setText(query);
                 search(query);
             }
+            String fingerprint = intent.getStringExtra(EXTRA_FINGERPRINT);
+            if (fingerprint != null) {
+                fingerprint = "0x" + fingerprint;
+                mQuery.setText(fingerprint);
+                search(fingerprint);
+            }
         }
     }
 

OpenPGP-Keychain/src/org/sufficientlysecure/keychain/util/IntentIntegratorSupportV4.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2012 ZXing authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.util;
+
+import android.content.Intent;
+import android.support.v4.app.Fragment;
+
+import com.google.zxing.integration.android.IntentIntegrator;
+
+/**
+ * IntentIntegrator for the V4 Android compatibility package.
+ * 
+ * @author Lachezar Dobrev
+ */
+public final class IntentIntegratorSupportV4 extends IntentIntegrator {
+
+    private final Fragment fragment;
+
+    /**
+     * @param fragment
+     *            Fragment to handle activity response.
+     */
+    public IntentIntegratorSupportV4(Fragment fragment) {
+        super(fragment.getActivity());
+        this.fragment = fragment;
+    }
+
+    @Override
+    protected void startActivityForResult(Intent intent, int code) {
+        fragment.startActivityForResult(intent, code);
+    }
+
+}