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/*
* Copyright (C) 2009 The Android Open Source Project
*
* 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 com.android.certinstaller;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.preference.PreferenceActivity;
import android.provider.DocumentsContract;
import android.security.Credentials;
import android.security.KeyChain;
import android.util.Log;
import android.widget.Toast;
import libcore.io.IoUtils;
import libcore.io.Streams;
import java.io.IOException;
import java.io.InputStream;
/**
* The main class for installing certificates to the system keystore. It reacts
* to the public {@link Credentials#INSTALL_ACTION} intent.
*/
public class CertInstallerMain extends PreferenceActivity {
private static final String TAG = "CertInstaller";
private static final int REQUEST_INSTALL = 1;
private static final int REQUEST_OPEN_DOCUMENT = 2;
private static final String[] ACCEPT_MIME_TYPES = {
"application/x-pkcs12",
"application/x-x509-ca-cert",
"application/x-x509-user-cert",
"application/x-x509-server-cert",
"application/x-pem-file",
"application/pkix-cert"
};
private static final String INSTALL_CERT_AS_USER_CLASS = ".InstallCertAsUser";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setResult(RESULT_CANCELED);
final Intent intent = getIntent();
final String action = intent.getAction();
if (Credentials.INSTALL_ACTION.equals(action)
|| Credentials.INSTALL_AS_USER_ACTION.equals(action)) {
Bundle bundle = intent.getExtras();
/*
* There is a special INSTALL_AS_USER action that this activity is
* aliased to, but you have to have a permission to call it. If the
* caller got here any other way, remove the extra that we allow in
* that INSTALL_AS_USER path.
*/
String calledClass = intent.getComponent().getClassName();
String installAsUserClassName = getPackageName() + INSTALL_CERT_AS_USER_CLASS;
if (bundle != null && !installAsUserClassName.equals(calledClass)) {
bundle.remove(Credentials.EXTRA_INSTALL_AS_UID);
}
// If bundle is empty of any actual credentials, ask user to open.
// Otherwise, pass extras to CertInstaller to install those credentials.
// Either way, we use KeyChain.EXTRA_NAME as the default name if available.
if (bundle == null
|| bundle.isEmpty()
|| (bundle.size() == 1
&& (bundle.containsKey(KeyChain.EXTRA_NAME)
|| bundle.containsKey(Credentials.EXTRA_INSTALL_AS_UID)))) {
final Intent openIntent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
openIntent.setType("*/*");
openIntent.putExtra(Intent.EXTRA_MIME_TYPES, ACCEPT_MIME_TYPES);
openIntent.putExtra(DocumentsContract.EXTRA_SHOW_ADVANCED, true);
startActivityForResult(openIntent, REQUEST_OPEN_DOCUMENT);
} else {
final Intent installIntent = new Intent(this, CertInstaller.class);
installIntent.putExtras(intent);
startActivityForResult(installIntent, REQUEST_INSTALL);
}
} else if (Intent.ACTION_VIEW.equals(action)) {
startInstallActivity(intent.getType(), intent.getData());
}
}
private void startInstallActivity(String mimeType, Uri uri) {
if (mimeType == null) {
mimeType = getContentResolver().getType(uri);
}
InputStream in = null;
try {
in = getContentResolver().openInputStream(uri);
final byte[] raw = Streams.readFully(in);
startInstallActivity(mimeType, raw);
} catch (IOException e) {
Log.e(TAG, "Failed to read certificate: " + e);
Toast.makeText(this, R.string.cert_read_error, Toast.LENGTH_LONG).show();
} finally {
IoUtils.closeQuietly(in);
}
}
private void startInstallActivity(String mimeType, byte[] value) {
Intent intent = new Intent(this, CertInstaller.class);
if ("application/x-pkcs12".equals(mimeType)) {
intent.putExtra(KeyChain.EXTRA_PKCS12, value);
} else if ("application/x-x509-ca-cert".equals(mimeType)
|| "application/x-x509-user-cert".equals(mimeType)
|| "application/x-x509-server-cert".equals(mimeType)
|| "application/x-pem-file".equals(mimeType)
|| "application/pkix-cert".equals(mimeType)) {
intent.putExtra(KeyChain.EXTRA_CERTIFICATE, value);
} else {
throw new IllegalArgumentException("Unknown MIME type: " + mimeType);
}
startActivityForResult(intent, REQUEST_INSTALL);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_OPEN_DOCUMENT) {
if (resultCode == RESULT_OK) {
startInstallActivity(null, data.getData());
} else {
finish();
}
} else if (requestCode == REQUEST_INSTALL) {
setResult(resultCode);
finish();
} else {
Log.w(TAG, "unknown request code: " + requestCode);
}
}
}
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