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remote service: package signature verification, use string for service instead of getClass.getName

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This commit is contained in:
Dominik Schürmann 2013-12-30 19:16:21 +01:00
parent 3235201cf3
commit 7c3a53d149
15 changed files with 359 additions and 190 deletions
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239
OpenPGP-Keychain/res/layout/api_app_settings_fragment.xml
View file

@ -1,122 +1,153 @@
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="?android:attr/listPreferredItemHeight"
android:gravity="center_horizontal"
android:orientation="horizontal"
android:paddingBottom="3dip" >
<ImageView
android:id="@+id/api_app_settings_app_icon"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_alignParentBottom="true"
android:layout_alignParentTop="true"
android:layout_marginRight="6dp"
android:src="@drawable/icon" />
<TextView
android:id="@+id/api_app_settings_app_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toRightOf="@+id/api_app_settings_app_icon"
android:gravity="center_vertical"
android:orientation="vertical"
android:text="Name (set in-code)"
android:textAppearance="?android:attr/textAppearanceMedium" />
</RelativeLayout>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
android:orientation="vertical" >
<Button
android:id="@+id/api_app_settings_select_key_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:text="@string/api_settings_select_key" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="?android:attr/listPreferredItemHeight"
android:gravity="center_horizontal"
android:orientation="horizontal"
android:paddingBottom="3dip" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingLeft="16dp" >
<ImageView
android:id="@+id/api_app_settings_app_icon"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_alignParentBottom="true"
android:layout_alignParentTop="true"
android:layout_marginRight="6dp"
android:src="@drawable/icon" />
<TextView
android:id="@+id/api_app_settings_user_id"
android:id="@+id/api_app_settings_app_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:ellipsize="end"
android:singleLine="true"
android:text="@string/api_settings_no_key"
android:layout_centerVertical="true"
android:layout_toRightOf="@+id/api_app_settings_app_icon"
android:gravity="center_vertical"
android:orientation="vertical"
android:text="Name (set in-code)"
android:textAppearance="?android:attr/textAppearanceMedium" />
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Button
android:id="@+id/api_app_settings_select_key_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:text="@string/api_settings_select_key" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingLeft="16dp" >
<TextView
android:id="@+id/api_app_settings_user_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:ellipsize="end"
android:singleLine="true"
android:text="@string/api_settings_no_key"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/api_app_settings_user_id_rest"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:ellipsize="end"
android:singleLine="true"
android:text=""
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
</LinearLayout>
<Button
android:id="@+id/api_app_settings_advanced_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/api_settings_show_advanced" />
<LinearLayout
android:id="@+id/api_app_settings_advanced"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:visibility="gone" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/label_encryption_algorithm"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Spinner
android:id="@+id/api_app_settings_encryption_algorithm"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/label_hash_algorithm"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Spinner
android:id="@+id/api_app_settings_hash_algorithm"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/label_message_compression"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Spinner
android:id="@+id/api_app_settings_compression"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/api_settings_package_name"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/api_app_settings_user_id_rest"
android:layout_width="wrap_content"
android:id="@+id/api_app_settings_package_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:ellipsize="end"
android:singleLine="true"
android:text=""
android:text="com.example"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/api_settings_package_signature"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/api_app_settings_package_signature"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Base64 encoded signature"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
</LinearLayout>
<Button
android:id="@+id/api_app_settings_advanced_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/api_settings_show_advanced" />
<LinearLayout
android:id="@+id/api_app_settings_advanced"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:visibility="invisible" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/label_encryption_algorithm"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Spinner
android:id="@+id/api_app_settings_encryption_algorithm"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/label_hash_algorithm"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Spinner
android:id="@+id/api_app_settings_hash_algorithm"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/label_message_compression"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Spinner
android:id="@+id/api_app_settings_compression"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
</ScrollView>

4
OpenPGP-Keychain/res/values/strings.xml
View file

@ -313,7 +313,7 @@
<string name="import_qr_code_missing">Missing QR Codes: %1$s</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>
<!-- Intent labels -->
<string name="intent_decrypt_file">OpenPGP: Decrypt File</string>
<string name="intent_import_key">OpenPGP: Import Key</string>
@ -329,6 +329,8 @@
<string name="api_settings_save">Save</string>
<string name="api_settings_cancel">Cancel</string>
<string name="api_settings_revoke">Revoke access</string>
<string name="api_settings_package_name">Package Name</string>
<string name="api_settings_package_signature">SHA-256 of Package Signature</string>
<string name="api_register_text">The following application requests access to OpenPGP Keychain\'s API.\n\nAllow permanent access?</string>
<string name="api_register_allow">Allow access</string>
<string name="api_register_disallow">Disallow access</string>

1
OpenPGP-Keychain/src/org/openintents/openpgp/IOpenPgpService.aidl
View file

@ -50,7 +50,6 @@ interface IOpenPgpService {
*/
oneway void sign(in OpenPgpData input, in OpenPgpData output, in IOpenPgpCallback callback);
/**
* Encrypt
*

10
OpenPGP-Keychain/src/org/openintents/openpgp/OpenPgpConstants.java Normal file
View file

@ -0,0 +1,10 @@
package org.openintents.openpgp;
public class OpenPgpConstants {
public static final String TAG = "OpenPgp API";
public static final int REQUIRED_API_VERSION = 1;
public static final String SERVICE_INTENT = "org.openintents.openpgp.IOpenPgpService";
}

2
OpenPGP-Keychain/src/org/openintents/openpgp/OpenPgpHelper.java
View file

@ -40,7 +40,7 @@ public class OpenPgpHelper {
}
public boolean isAvailable() {
Intent intent = new Intent(IOpenPgpService.class.getName());
Intent intent = new Intent(OpenPgpConstants.SERVICE_INTENT);
List<ResolveInfo> resInfo = context.getPackageManager().queryIntentServices(intent, 0);
if (!resInfo.isEmpty()) {
return true;

31
OpenPGP-Keychain/src/org/openintents/openpgp/OpenPgpListPreference.java
View file

@ -39,22 +39,19 @@ public class OpenPgpListPreference extends DialogPreference {
ArrayList<OpenPgpProviderEntry> mProviderList = new ArrayList<OpenPgpProviderEntry>();
private String mSelectedPackage;
public static final int REQUIRED_API_VERSION = 1;
public OpenPgpListPreference(Context context, AttributeSet attrs) {
super(context, attrs);
List<ResolveInfo> resInfo =
context.getPackageManager().queryIntentServices(
new Intent(IOpenPgpService.class.getName()), PackageManager.GET_META_DATA);
List<ResolveInfo> resInfo = context.getPackageManager().queryIntentServices(
new Intent(OpenPgpConstants.SERVICE_INTENT), PackageManager.GET_META_DATA);
if (!resInfo.isEmpty()) {
for (ResolveInfo resolveInfo : resInfo) {
if (resolveInfo.serviceInfo == null)
continue;
String packageName = resolveInfo.serviceInfo.packageName;
String simpleName = String.valueOf(resolveInfo.serviceInfo
.loadLabel(context.getPackageManager()));
String simpleName = String.valueOf(resolveInfo.serviceInfo.loadLabel(context
.getPackageManager()));
Drawable icon = resolveInfo.serviceInfo.loadIcon(context.getPackageManager());
// get api version
@ -95,8 +92,8 @@ public class OpenPgpListPreference extends DialogPreference {
TextView tv = (TextView) v.findViewById(android.R.id.text1);
// Put the image on the TextView
tv.setCompoundDrawablesWithIntrinsicBounds(mProviderList.get(position).icon,
null, null, null);
tv.setCompoundDrawablesWithIntrinsicBounds(mProviderList.get(position).icon, null,
null, null);
// Add margin between image and text (support various screen
// densities)
@ -104,13 +101,12 @@ public class OpenPgpListPreference extends DialogPreference {
tv.setCompoundDrawablePadding(dp5);
// disable if it has the wrong api_version
if (mProviderList.get(position).apiVersion == REQUIRED_API_VERSION) {
if (mProviderList.get(position).apiVersion == OpenPgpConstants.REQUIRED_API_VERSION) {
tv.setEnabled(true);
} else {
tv.setEnabled(false);
tv.setText(tv.getText() + " (API v"
+ mProviderList.get(position).apiVersion + ", needs v"
+ REQUIRED_API_VERSION + ")");
tv.setText(tv.getText() + " (API v" + mProviderList.get(position).apiVersion
+ ", needs v" + OpenPgpConstants.REQUIRED_API_VERSION + ")");
}
return v;
@ -125,8 +121,8 @@ public class OpenPgpListPreference extends DialogPreference {
mSelectedPackage = mProviderList.get(which).packageName;
/*
* Clicking on an item simulates the positive button
* click, and dismisses the dialog.
* Clicking on an item simulates the positive button click, and dismisses
* the dialog.
*/
OpenPgpListPreference.this.onClick(dialog, DialogInterface.BUTTON_POSITIVE);
dialog.dismiss();
@ -134,9 +130,8 @@ public class OpenPgpListPreference extends DialogPreference {
});
/*
* The typical interaction for list-based dialogs is to have
* click-on-an-item dismiss the dialog instead of the user having to
* press 'Ok'.
* The typical interaction for list-based dialogs is to have click-on-an-item dismiss the
* dialog instead of the user having to press 'Ok'.
*/
builder.setPositiveButton(null, null);
}

32
OpenPGP-Keychain/src/org/openintents/openpgp/OpenPgpServiceConnection.java
View file

@ -29,14 +29,12 @@ public class OpenPgpServiceConnection {
private Context mApplicationContext;
private IOpenPgpService mService;
private boolean bound;
private String cryptoProviderPackageName;
private static final String TAG = "OpenPgpServiceConnection";
private boolean mBound;
private String mCryptoProviderPackageName;
public OpenPgpServiceConnection(Context context, String cryptoProviderPackageName) {
mApplicationContext = context.getApplicationContext();
this.cryptoProviderPackageName = cryptoProviderPackageName;
this.mApplicationContext = context.getApplicationContext();
this.mCryptoProviderPackageName = cryptoProviderPackageName;
}
public IOpenPgpService getService() {
@ -44,20 +42,20 @@ public class OpenPgpServiceConnection {
}
public boolean isBound() {
return bound;
return mBound;
}
private ServiceConnection mCryptoServiceConnection = new ServiceConnection() {
public void onServiceConnected(ComponentName name, IBinder service) {
mService = IOpenPgpService.Stub.asInterface(service);
Log.d(TAG, "connected to service");
bound = true;
Log.d(OpenPgpConstants.TAG, "connected to service");
mBound = true;
}
public void onServiceDisconnected(ComponentName name) {
mService = null;
Log.d(TAG, "disconnected from service");
bound = false;
Log.d(OpenPgpConstants.TAG, "disconnected from service");
mBound = false;
}
};
@ -67,23 +65,23 @@ public class OpenPgpServiceConnection {
* @return
*/
public boolean bindToService() {
if (mService == null && !bound) { // if not already connected
if (mService == null && !mBound) { // if not already connected
try {
Log.d(TAG, "not bound yet");
Log.d(OpenPgpConstants.TAG, "not bound yet");
Intent serviceIntent = new Intent();
serviceIntent.setAction(IOpenPgpService.class.getName());
serviceIntent.setPackage(cryptoProviderPackageName);
serviceIntent.setPackage(mCryptoProviderPackageName);
mApplicationContext.bindService(serviceIntent, mCryptoServiceConnection,
Context.BIND_AUTO_CREATE);
return true;
} catch (Exception e) {
Log.d(TAG, "Exception", e);
Log.d(OpenPgpConstants.TAG, "Exception on binding", e);
return false;
}
} else { // already connected
Log.d(TAG, "already bound... ");
} else {
Log.d(OpenPgpConstants.TAG, "already bound");
return true;
}
}

1
OpenPGP-Keychain/src/org/sufficientlysecure/keychain/provider/KeychainContract.java
View file

@ -55,6 +55,7 @@ public class KeychainContract {
interface ApiAppsColumns {
String PACKAGE_NAME = "package_name";
String PACKAGE_SIGNATURE = "package_signature";
String KEY_ID = "key_id"; // not a database id
String ENCRYPTION_ALGORITHM = "encryption_algorithm";
String HASH_ALORITHM = "hash_algorithm";

13
OpenPGP-Keychain/src/org/sufficientlysecure/keychain/provider/KeychainDatabase.java
View file

@ -31,7 +31,7 @@ import android.provider.BaseColumns;
public class KeychainDatabase extends SQLiteOpenHelper {
private static final String DATABASE_NAME = "apg.db";
private static final int DATABASE_VERSION = 5;
private static final int DATABASE_VERSION = 6;
public interface Tables {
String KEY_RINGS = "key_rings";
@ -66,9 +66,10 @@ public class KeychainDatabase extends SQLiteOpenHelper {
private static final String CREATE_API_APPS = "CREATE TABLE IF NOT EXISTS " + Tables.API_APPS
+ " (" + BaseColumns._ID + " INTEGER PRIMARY KEY AUTOINCREMENT, "
+ ApiAppsColumns.PACKAGE_NAME + " TEXT UNIQUE, " + ApiAppsColumns.KEY_ID + " INT64, "
+ ApiAppsColumns.ENCRYPTION_ALGORITHM + " INTEGER, " + ApiAppsColumns.HASH_ALORITHM
+ " INTEGER, " + ApiAppsColumns.COMPRESSION + " INTEGER)";
+ ApiAppsColumns.PACKAGE_NAME + " TEXT UNIQUE, " + ApiAppsColumns.PACKAGE_SIGNATURE
+ " BLOB, " + ApiAppsColumns.KEY_ID + " INT64, " + ApiAppsColumns.ENCRYPTION_ALGORITHM
+ " INTEGER, " + ApiAppsColumns.HASH_ALORITHM + " INTEGER, "
+ ApiAppsColumns.COMPRESSION + " INTEGER)";
KeychainDatabase(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
@ -110,6 +111,10 @@ public class KeychainDatabase extends SQLiteOpenHelper {
break;
case 4:
db.execSQL(CREATE_API_APPS);
case 5:
// new column: package_signature
db.execSQL("DROP TABLE IF EXISTS " + Tables.API_APPS);
db.execSQL(CREATE_API_APPS);
default:
break;

25
OpenPGP-Keychain/src/org/sufficientlysecure/keychain/provider/ProviderHelper.java
View file

@ -742,6 +742,7 @@ public class ProviderHelper {
private static ContentValues contentValueForApiApps(AppSettings appSettings) {
ContentValues values = new ContentValues();
values.put(ApiApps.PACKAGE_NAME, appSettings.getPackageName());
values.put(ApiApps.PACKAGE_SIGNATURE, appSettings.getPackageSignature());
values.put(ApiApps.KEY_ID, appSettings.getKeyId());
values.put(ApiApps.COMPRESSION, appSettings.getCompression());
values.put(ApiApps.ENCRYPTION_ALGORITHM, appSettings.getEncryptionAlgorithm());
@ -770,6 +771,8 @@ public class ProviderHelper {
settings = new AppSettings();
settings.setPackageName(cur.getString(cur
.getColumnIndex(KeychainContract.ApiApps.PACKAGE_NAME)));
settings.setPackageSignature(cur.getBlob(cur
.getColumnIndex(KeychainContract.ApiApps.PACKAGE_SIGNATURE)));
settings.setKeyId(cur.getLong(cur.getColumnIndex(KeychainContract.ApiApps.KEY_ID)));
settings.setCompression(cur.getInt(cur
.getColumnIndexOrThrow(KeychainContract.ApiApps.COMPRESSION)));
@ -781,4 +784,26 @@ public class ProviderHelper {
return settings;
}
public static byte[] getApiAppSignature(Context context, String packageName) {
Uri queryUri = KeychainContract.ApiApps.buildByPackageNameUri(packageName);
String[] projection = new String[] { ApiApps.PACKAGE_SIGNATURE };
ContentResolver cr = context.getContentResolver();
Cursor cursor = cr.query(queryUri, projection, null, null, null);
byte[] signature = null;
if (cursor != null && cursor.moveToFirst()) {
int signatureCol = 0;
signature = cursor.getBlob(signatureCol);
}
if (cursor != null) {
cursor.close();
}
return signature;
}
}

10
OpenPGP-Keychain/src/org/sufficientlysecure/keychain/service/exception/WrongPackageSignatureException.java Normal file
View file

@ -0,0 +1,10 @@
package org.sufficientlysecure.keychain.service.exception;
public class WrongPackageSignatureException extends Exception {
private static final long serialVersionUID = -8294642703122196028L;
public WrongPackageSignatureException(String message) {
super(message);
}
}

12
OpenPGP-Keychain/src/org/sufficientlysecure/keychain/service/remote/AppSettings.java
View file

@ -23,6 +23,7 @@ import org.sufficientlysecure.keychain.Id;
public class AppSettings {
private String packageName;
private byte[] packageSignature;
private long keyId = Id.key.none;
private int encryptionAlgorithm;
private int hashAlgorithm;
@ -32,9 +33,10 @@ public class AppSettings {
}
public AppSettings(String packageName) {
public AppSettings(String packageName, byte[] packageSignature) {
super();
this.packageName = packageName;
this.packageSignature = packageSignature;
// defaults:
this.encryptionAlgorithm = PGPEncryptedData.AES_256;
this.hashAlgorithm = HashAlgorithmTags.SHA512;
@ -49,6 +51,14 @@ public class AppSettings {
this.packageName = packageName;
}
public byte[] getPackageSignature() {
return packageSignature;
}
public void setPackageSignature(byte[] packageSignature) {
this.packageSignature = packageSignature;
}
public long getKeyId() {
return keyId;
}

23
OpenPGP-Keychain/src/org/sufficientlysecure/keychain/service/remote/AppSettingsFragment.java
View file

@ -17,8 +17,12 @@
package org.sufficientlysecure.keychain.service.remote;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import org.spongycastle.openpgp.PGPSecretKey;
import org.spongycastle.openpgp.PGPSecretKeyRing;
import org.spongycastle.util.encoders.Hex;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.Id;
import org.sufficientlysecure.keychain.R;
@ -67,6 +71,8 @@ public class AppSettingsFragment extends Fragment {
private Spinner mEncryptionAlgorithm;
private Spinner mHashAlgorithm;
private Spinner mCompression;
private TextView mPackageName;
private TextView mPackageSignature;
KeyValueSpinnerAdapter encryptionAdapter;
KeyValueSpinnerAdapter hashAdapter;
@ -79,6 +85,19 @@ public class AppSettingsFragment extends Fragment {
public void setAppSettings(AppSettings appSettings) {
this.appSettings = appSettings;
setPackage(appSettings.getPackageName());
mPackageName.setText(appSettings.getPackageName());
try {
MessageDigest md = MessageDigest.getInstance("SHA-256");
md.update(appSettings.getPackageSignature());
byte[] digest = md.digest();
String signature = new String(Hex.encode(digest));
mPackageSignature.setText(signature);
} catch (NoSuchAlgorithmException e) {
Log.e(Constants.TAG, "Should not happen!", e);
}
updateSelectedKeyView(appSettings.getKeyId());
mEncryptionAlgorithm.setSelection(encryptionAdapter.getPosition(appSettings
.getEncryptionAlgorithm()));
@ -110,6 +129,8 @@ public class AppSettingsFragment extends Fragment {
.findViewById(R.id.api_app_settings_encryption_algorithm);
mHashAlgorithm = (Spinner) view.findViewById(R.id.api_app_settings_hash_algorithm);
mCompression = (Spinner) view.findViewById(R.id.api_app_settings_compression);
mPackageName = (TextView) view.findViewById(R.id.api_app_settings_package_name);
mPackageSignature = (TextView) view.findViewById(R.id.api_app_settings_package_signature);
AlgorithmNames algorithmNames = new AlgorithmNames(getActivity());
@ -182,7 +203,7 @@ public class AppSettingsFragment extends Fragment {
public void onClick(View v) {
if (mAdvancedSettingsContainer.getVisibility() == View.VISIBLE) {
mAdvancedSettingsContainer.startAnimation(invisibleAnimation);
mAdvancedSettingsContainer.setVisibility(View.INVISIBLE);
mAdvancedSettingsContainer.setVisibility(View.GONE);
mAdvancedSettingsButton.setText(R.string.api_settings_show_advanced);
} else {
mAdvancedSettingsContainer.startAnimation(visibleAnimation);

142
OpenPGP-Keychain/src/org/sufficientlysecure/keychain/service/remote/RemoteService.java
View file

@ -18,18 +18,24 @@
package org.sufficientlysecure.keychain.service.remote;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.TimeUnit;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.provider.KeychainContract;
import org.sufficientlysecure.keychain.provider.ProviderHelper;
import org.sufficientlysecure.keychain.service.exception.WrongPackageSignatureException;
import org.sufficientlysecure.keychain.util.Log;
import org.sufficientlysecure.keychain.util.PausableThreadPoolExecutor;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.Signature;
import android.net.Uri;
import android.os.Binder;
import android.os.Bundle;
@ -38,7 +44,7 @@ import android.os.Message;
import android.os.Messenger;
/**
* Abstract service for remote APIs that handle app registration and user input.
* Abstract service class for remote APIs that handle app registration and user input.
*/
public abstract class RemoteService extends Service {
Context mContext;
@ -98,32 +104,57 @@ public abstract class RemoteService extends Service {
* @param r
*/
protected void checkAndEnqueue(Runnable r) {
if (isCallerAllowed(false)) {
mThreadPool.execute(r);
Log.d(Constants.TAG, "Enqueued runnable…");
} else {
String[] callingPackages = getPackageManager()
.getPackagesForUid(Binder.getCallingUid());
Log.e(Constants.TAG, "Not allowed to use service! Starting activity for registration!");
Bundle extras = new Bundle();
// TODO: currently simply uses first entry
extras.putString(RemoteServiceActivity.EXTRA_PACKAGE_NAME, callingPackages[0]);
RegisterActivityCallback callback = new RegisterActivityCallback();
pauseAndStartUserInteraction(RemoteServiceActivity.ACTION_REGISTER, callback, extras);
if (callback.isAllowed()) {
try {
if (isCallerAllowed(false)) {
mThreadPool.execute(r);
Log.d(Constants.TAG, "Enqueued runnable…");
} else {
Log.d(Constants.TAG, "User disallowed app!");
String[] callingPackages = getPackageManager().getPackagesForUid(
Binder.getCallingUid());
// TODO: currently simply uses first entry
String packageName = callingPackages[0];
byte[] packageSignature;
try {
packageSignature = getPackageSignature(packageName);
} catch (NameNotFoundException e) {
Log.e(Constants.TAG, "Should not happen, returning!", e);
return;
}
Log.e(Constants.TAG,
"Not allowed to use service! Starting activity for registration!");
Bundle extras = new Bundle();
extras.putString(RemoteServiceActivity.EXTRA_PACKAGE_NAME, packageName);
extras.putByteArray(RemoteServiceActivity.EXTRA_PACKAGE_SIGNATURE, packageSignature);
RegisterActivityCallback callback = new RegisterActivityCallback();
pauseAndStartUserInteraction(RemoteServiceActivity.ACTION_REGISTER, callback,
extras);
if (callback.isAllowed()) {
mThreadPool.execute(r);
Log.d(Constants.TAG, "Enqueued runnable…");
} else {
Log.d(Constants.TAG, "User disallowed app!");
}
}
} catch (WrongPackageSignatureException e) {
// TODO: Inform user about wrong signature!
Log.e(Constants.TAG, "RemoteService", e);
}
}
private byte[] getPackageSignature(String packageName) throws NameNotFoundException {
PackageInfo pkgInfo = getPackageManager().getPackageInfo(packageName,
PackageManager.GET_SIGNATURES);
Signature[] signatures = pkgInfo.signatures;
// TODO: Only first signature?!
byte[] packageSignature = signatures[0].toByteArray();
return packageSignature;
}
/**
* Locks current thread and pauses execution of runnables and starts activity for user input
*
@ -200,15 +231,20 @@ public abstract class RemoteService extends Service {
packageName = msg.getData().getString(PACKAGE_NAME);
// resume threads
if (isPackageAllowed(packageName, false)) {
synchronized (userInputLock) {
userInputLock.notifyAll();
try {
if (isPackageAllowed(packageName)) {
synchronized (userInputLock) {
userInputLock.notifyAll();
}
mThreadPool.resume();
} else {
// Should not happen!
Log.e(Constants.TAG, "Should not happen! Emergency shutdown!");
mThreadPool.shutdownNow();
}
mThreadPool.resume();
} else {
// Should not happen!
Log.e(Constants.TAG, "Should not happen! Emergency shutdown!");
mThreadPool.shutdownNow();
} catch (WrongPackageSignatureException e) {
// TODO: Inform user about wrong signature!
Log.e(Constants.TAG, "RemoteService", e);
}
} else {
allowed = false;
@ -230,15 +266,28 @@ public abstract class RemoteService extends Service {
* @param allowOnlySelf
* allow only Keychain app itself
* @return true if process is allowed to use this service
* @throws WrongPackageSignatureException
*/
private boolean isCallerAllowed(boolean allowOnlySelf) {
String[] callingPackages = getPackageManager().getPackagesForUid(Binder.getCallingUid());
private boolean isCallerAllowed(boolean allowOnlySelf) throws WrongPackageSignatureException {
return isUidAllowed(Binder.getCallingUid(), allowOnlySelf);
}
private boolean isUidAllowed(int uid, boolean allowOnlySelf)
throws WrongPackageSignatureException {
if (android.os.Process.myUid() == uid) {
return true;
}
if (allowOnlySelf) { // barrier
return false;
}
String[] callingPackages = getPackageManager().getPackagesForUid(uid);
// is calling package allowed to use this service?
for (int i = 0; i < callingPackages.length; i++) {
String currentPkg = callingPackages[i];
if (isPackageAllowed(currentPkg, allowOnlySelf)) {
if (isPackageAllowed(currentPkg)) {
return true;
}
}
@ -248,28 +297,39 @@ public abstract class RemoteService extends Service {
}
/**
* Checks if packageName is a registered app for the API.
* Checks if packageName is a registered app for the API. Does not return true for own package!
*
* @param packageName
* @param allowOnlySelf
* allow only Keychain app itself
* @return
* @throws WrongPackageSignatureException
*/
private boolean isPackageAllowed(String packageName, boolean allowOnlySelf) {
private boolean isPackageAllowed(String packageName) throws WrongPackageSignatureException {
Log.d(Constants.TAG, "packageName: " + packageName);
ArrayList<String> allowedPkgs = ProviderHelper.getRegisteredApiApps(mContext);
ArrayList<String> allowedPkgs = ProviderHelper.getRegisteredApiApps(this);
Log.d(Constants.TAG, "allowed: " + allowedPkgs);
// check if package is allowed to use our service
if (allowedPkgs.contains(packageName) && (!allowOnlySelf)) {
if (allowedPkgs.contains(packageName)) {
Log.d(Constants.TAG, "Package is allowed! packageName: " + packageName);
return true;
} else if (Constants.PACKAGE_NAME.equals(packageName)) {
Log.d(Constants.TAG, "Package is OpenPGP Keychain! -> allowed!");
// check package signature
byte[] currentSig;
try {
currentSig = getPackageSignature(packageName);
} catch (NameNotFoundException e) {
throw new WrongPackageSignatureException(e.getMessage());
}
return true;
byte[] storedSig = ProviderHelper.getApiAppSignature(this, packageName);
if (Arrays.equals(currentSig, storedSig)) {
Log.d(Constants.TAG,
"Package signature is correct! (equals signature from database)");
return true;
} else {
throw new WrongPackageSignatureException(
"PACKAGE NOT ALLOWED! Signature wrong! (Signature not equals signature from database)");
}
}
return false;

4
OpenPGP-Keychain/src/org/sufficientlysecure/keychain/service/remote/RemoteServiceActivity.java
View file

@ -55,6 +55,7 @@ public class RemoteServiceActivity extends SherlockFragmentActivity {
public static final String EXTRA_SECRET_KEY_ID = "secret_key_id";
// register action
public static final String EXTRA_PACKAGE_NAME = "package_name";
public static final String EXTRA_PACKAGE_SIGNATURE = "package_signature";
// select pub keys action
public static final String EXTRA_SELECTED_MASTER_KEY_IDS = "master_key_ids";
public static final String EXTRA_MISSING_USER_IDS = "missing_user_ids";
@ -110,6 +111,7 @@ public class RemoteServiceActivity extends SherlockFragmentActivity {
*/
if (ACTION_REGISTER.equals(action)) {
final String packageName = extras.getString(EXTRA_PACKAGE_NAME);
final byte[] packageSignature = extras.getByteArray(EXTRA_PACKAGE_SIGNATURE);
// Inflate a "Done"/"Cancel" custom action bar view
ActionBarHelper.setDoneCancelView(getSupportActionBar(), R.string.api_register_allow,
@ -166,7 +168,7 @@ public class RemoteServiceActivity extends SherlockFragmentActivity {
mSettingsFragment = (AppSettingsFragment) getSupportFragmentManager().findFragmentById(
R.id.api_app_settings_fragment);
AppSettings settings = new AppSettings(packageName);
AppSettings settings = new AppSettings(packageName, packageSignature);
mSettingsFragment.setAppSettings(settings);
} else if (ACTION_CACHE_PASSPHRASE.equals(action)) {
long secretKeyId = extras.getLong(EXTRA_SECRET_KEY_ID);