Show keys with android contacts

This means to sync userid + keyid into contact storage. Android will merge them to normal contacts based on primary userid.

OpenKeychain/src/main/AndroidManifest.xml

@@ -58,6 +58,7 @@
     <uses-permission android:name="android.permission.READ_SYNC_SETTINGS"/>
     <uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS"/>
     <uses-permission android:name="android.permission.READ_CONTACTS" />
+    <uses-permission android:name="android.permission.WRITE_CONTACTS" />
 
     <!-- android:allowBackup="false": Don't allow backup over adb backup or other apps! -->
     <application
@@ -91,6 +92,11 @@
             <meta-data
                 android:name="android.support.PARENT_ACTIVITY"
                 android:value=".ui.KeyListActivity" />
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="vnd.android.cursor.item/vnd.org.sufficientlysecure.keychain.key" />
+            </intent-filter>
         </activity>
         <activity
             android:name=".ui.ViewCertActivity"

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/Constants.java

@@ -46,6 +46,8 @@ public final class Constants {
 
     public static final String INTENT_PREFIX = PACKAGE_NAME + ".action.";
 
+    public static final String CUSTOM_CONTACT_DATA_MIME_TYPE = "vnd.android.cursor.item/vnd.org.sufficientlysecure.keychain.key";
+
     public static final class Path {
         public static final String APP_DIR = Environment.getExternalStorageDirectory()
                 + "/OpenKeychain";

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/KeychainApplication.java

@@ -26,6 +26,7 @@ import android.graphics.drawable.Drawable;
 import android.os.Environment;
 
 import org.spongycastle.jce.provider.BouncyCastleProvider;
+import org.sufficientlysecure.keychain.helper.ContactHelper;
 import org.sufficientlysecure.keychain.util.Log;
 import org.sufficientlysecure.keychain.util.PRNGFixes;
 
@@ -79,14 +80,14 @@ public class KeychainApplication extends Application {
         brandGlowEffect(getApplicationContext(),
                 getApplicationContext().getResources().getColor(R.color.emphasis));
 
-        setupAccountAsNeeded();
+        setupAccountAsNeeded(this);
     }
 
-    private void setupAccountAsNeeded() {
+    public static void setupAccountAsNeeded(Context context) {
-        AccountManager manager = AccountManager.get(this);
+        AccountManager manager = AccountManager.get(context);
-        Account[] accounts = manager.getAccountsByType(getPackageName());
+        Account[] accounts = manager.getAccountsByType(Constants.PACKAGE_NAME);
         if (accounts == null || accounts.length == 0) {
-            Account dummy = new Account(getString(R.string.app_name), getPackageName());
+            Account dummy = new Account(context.getString(R.string.app_name), Constants.PACKAGE_NAME);
             manager.addAccountExplicitly(dummy, null, null);
         }
     }

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/ContactHelper.java

@@ -19,11 +19,17 @@ package org.sufficientlysecure.keychain.helper;
 
 import android.accounts.Account;
 import android.accounts.AccountManager;
-import android.content.ContentResolver;
+import android.content.*;
-import android.content.Context;
 import android.database.Cursor;
+import android.net.Uri;
+import android.os.RemoteException;
 import android.provider.ContactsContract;
 import android.util.Patterns;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
+import org.sufficientlysecure.keychain.provider.KeychainContract;
+import org.sufficientlysecure.keychain.util.Log;
 
 import java.util.ArrayList;
 import java.util.HashSet;
@@ -32,6 +38,15 @@ import java.util.Set;
 
 public class ContactHelper {
 
+    public static final String[] KEYS_TO_CONTACT_PROJECTION = new String[]{
+            KeychainContract.KeyRings.USER_ID,
+            KeychainContract.KeyRings.FINGERPRINT,
+            KeychainContract.KeyRings.KEY_ID,
+            KeychainContract.KeyRings.MASTER_KEY_ID};
+    public static final String[] RAW_CONTACT_ID_PROJECTION = new String[]{ContactsContract.RawContacts._ID};
+    public static final String FIND_RAW_CONTACT_SELECTION =
+            ContactsContract.RawContacts.ACCOUNT_TYPE + "=? AND " + ContactsContract.RawContacts.SOURCE_ID + "=?";
+
     public static final List<String> getMailAccounts(Context context) {
         final Account[] accounts = AccountManager.get(context).getAccounts();
         final Set<String> emailSet = new HashSet<String>();
@@ -60,4 +75,74 @@ public class ContactHelper {
         mailCursor.close();
         return new ArrayList<String>(mails);
     }
+
+    public static Uri dataUriFromContactUri(Context context, Uri contactUri) {
+        Cursor contactMasterKey = context.getContentResolver().query(contactUri, new String[]{ContactsContract.Data.DATA2}, null, null, null, null);
+        if (contactMasterKey != null) {
+            if (contactMasterKey.moveToNext()) {
+                return KeychainContract.KeyRings.buildGenericKeyRingUri(contactMasterKey.getLong(0));
+            }
+            contactMasterKey.close();
+        }
+        return null;
+    }
+
+    public static void writeKeysToContacts(Context context) {
+        ContentResolver resolver = context.getContentResolver();
+        Cursor cursor = resolver.query(KeychainContract.KeyRings.buildUnifiedKeyRingsUri(), KEYS_TO_CONTACT_PROJECTION,
+                null, null, null);
+        if (cursor != null) {
+            while (cursor.moveToNext()) {
+                String[] userId = PgpKeyHelper.splitUserId(cursor.getString(0));
+                String fingerprint = PgpKeyHelper.convertFingerprintToHex(cursor.getBlob(1));
+                String keyIdShort = PgpKeyHelper.convertKeyIdToHexShort(cursor.getLong(2));
+                long masterKeyId = cursor.getLong(3);
+                int rawContactId = -1;
+                Cursor raw = resolver.query(ContactsContract.RawContacts.CONTENT_URI, RAW_CONTACT_ID_PROJECTION,
+                        FIND_RAW_CONTACT_SELECTION, new String[]{Constants.PACKAGE_NAME, fingerprint}, null, null);
+                if (raw != null) {
+                    if (raw.moveToNext()) {
+                        rawContactId = raw.getInt(0);
+                    }
+                    raw.close();
+                }
+                ArrayList<ContentProviderOperation> ops = new ArrayList<ContentProviderOperation>();
+                if (rawContactId == -1) {
+                    ops.add(ContentProviderOperation.newInsert(ContactsContract.RawContacts.CONTENT_URI)
+                            .withValue(ContactsContract.RawContacts.ACCOUNT_NAME, context.getString(R.string.app_name))
+                            .withValue(ContactsContract.RawContacts.ACCOUNT_TYPE, Constants.PACKAGE_NAME)
+                            .withValue(ContactsContract.RawContacts.SOURCE_ID, fingerprint)
+                            .build());
+                    if (userId[0] != null) {
+                        ops.add(ContentProviderOperation.newInsert(ContactsContract.Data.CONTENT_URI)
+                                .withValueBackReference(ContactsContract.Data.RAW_CONTACT_ID, 0)
+                                .withValue(ContactsContract.Data.MIMETYPE, ContactsContract.CommonDataKinds.StructuredName.CONTENT_ITEM_TYPE)
+                                .withValue(ContactsContract.CommonDataKinds.StructuredName.DISPLAY_NAME, userId[0])
+                                .build());
+                    }
+                    if (userId[1] != null) {
+                        ops.add(ContentProviderOperation.newInsert(ContactsContract.Data.CONTENT_URI)
+                                .withValueBackReference(ContactsContract.Data.RAW_CONTACT_ID, 0)
+                                .withValue(ContactsContract.Data.MIMETYPE, ContactsContract.CommonDataKinds.Email.CONTENT_ITEM_TYPE)
+                                .withValue(ContactsContract.CommonDataKinds.Email.DATA, userId[1])
+                                .build());
+                    }
+                    ops.add(ContentProviderOperation.newInsert(ContactsContract.Data.CONTENT_URI)
+                            .withValueBackReference(ContactsContract.Data.RAW_CONTACT_ID, 0)
+                            .withValue(ContactsContract.Data.MIMETYPE, Constants.CUSTOM_CONTACT_DATA_MIME_TYPE)
+                            .withValue(ContactsContract.Data.DATA1, String.format(context.getString(R.string.contact_show_key), keyIdShort))
+                            .withValue(ContactsContract.Data.DATA2, masterKeyId)
+                            .build());
+                }
+                try {
+                    resolver.applyBatch(ContactsContract.AUTHORITY, ops);
+                } catch (RemoteException e) {
+                    e.printStackTrace();
+                } catch (OperationApplicationException e) {
+                    e.printStackTrace();
+                }
+            }
+            cursor.close();
+        }
+    }
 }

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/ContactSyncAdapterService.java

@@ -24,6 +24,8 @@ import android.content.ContentProviderClient;
 import android.content.Intent;
 import android.content.SyncResult;
 import android.os.*;
+import org.sufficientlysecure.keychain.KeychainApplication;
+import org.sufficientlysecure.keychain.helper.ContactHelper;
 import org.sufficientlysecure.keychain.helper.EmailKeyHelper;
 import org.sufficientlysecure.keychain.util.Log;
 
@@ -60,6 +62,8 @@ public class ContactSyncAdapterService extends Service {
                             }
                         }
                     })));
+            KeychainApplication.setupAccountAsNeeded(ContactSyncAdapterService.this);
+            ContactHelper.writeKeysToContacts(ContactSyncAdapterService.this);
         }
     }
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ViewKeyActivity.java

@@ -20,6 +20,7 @@ package org.sufficientlysecure.keychain.ui;
 
 import android.annotation.TargetApi;
 import android.app.Activity;
+import android.content.Context;
 import android.content.Intent;
 import android.database.Cursor;
 import android.net.Uri;
@@ -32,6 +33,7 @@ import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
+import android.provider.ContactsContract;
 import android.support.v4.app.LoaderManager;
 import android.support.v4.content.CursorLoader;
 import android.support.v4.content.Loader;
@@ -47,6 +49,7 @@ import com.devspark.appmsg.AppMsg;
 
 import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.ContactHelper;
 import org.sufficientlysecure.keychain.helper.ExportHelper;
 import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
 import org.sufficientlysecure.keychain.provider.KeychainContract;
@@ -125,7 +128,7 @@ public class ViewKeyActivity extends ActionBarActivity implements
             switchToTab = intent.getExtras().getInt(EXTRA_SELECTED_TAB);
         }
 
-        Uri dataUri = getIntent().getData();
+        Uri dataUri = getDataUri();
         if (dataUri == null) {
             Log.e(Constants.TAG, "Data missing. Should be Uri of key!");
             finish();
@@ -163,6 +166,14 @@ public class ViewKeyActivity extends ActionBarActivity implements
         mViewPager.setCurrentItem(switchToTab);
     }
 
+    private Uri getDataUri() {
+        Uri dataUri = getIntent().getData();
+        if (dataUri != null && dataUri.getHost().equals(ContactsContract.AUTHORITY)) {
+            dataUri = ContactHelper.dataUriFromContactUri(this, dataUri);
+        }
+        return dataUri;
+    }
+
     private void loadData(Uri dataUri) {
         mDataUri = dataUri;
 

OpenKeychain/src/main/res/values/strings.xml

@@ -521,5 +521,6 @@
     <string name="error_no_encrypt_subkey">No encryption subkey available!</string>
     <string name="info_no_manual_account_creation">Do not create OpenKeychain-Accounts manually.
         For more information, see Help.</string>
+    <string name="contact_show_key">Show key (%s)</string>
 
 </resources>

OpenKeychain/src/main/res/xml/custom_pgp_contacts_structure.xml

@@ -1,7 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <ContactsSource xmlns:android="http://schemas.android.com/apk/res/android">
     <ContactsDataKind android:mimeType="vnd.android.cursor.item/vnd.org.sufficientlysecure.keychain.key"
-                      android:icon="@drawable/key_small"
+                      android:detailColumn="data1"/>
-                      android:summaryColumn="data1"
-                      android:detailColumn="data2"/>
 </ContactsSource>