/*
* Copyright (c) 2013, Psiphon Inc.
* All rights reserved.
*
* 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
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package ca.psiphon.ploggy;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import android.app.PendingIntent;
import android.content.ContentResolver;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.Uri;
import android.nfc.NdefMessage;
import android.nfc.NfcAdapter;
import android.os.Bundle;
import android.os.Parcelable;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
/**
* User interface for adding friends.
*
* This activity is invoked by various sources of serialized Identity blobs,
* including .ploggy files (e.g., Email attachments), NFC messages, etc.
*/
public class ActivityAddFriend extends ActivitySendIdentityByNfc implements View.OnClickListener {
public static final String IDENTITY_LINK_PREFIX = "ftp://identity.ploggy/#";
private static final String LOG_TAG = "Add Friend";
private ImageView mFriendAvatarImage;
private TextView mFriendNicknameText;
private TextView mFriendFingerprintText;
private Button mFriendAddButton;
protected Data.Friend mReceivedFriend;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add_friend);
mFriendAvatarImage = (ImageView)findViewById(R.id.add_friend_friend_avatar_image);
mFriendNicknameText = (TextView)findViewById(R.id.add_friend_friend_nickname_text);
mFriendFingerprintText = (TextView)findViewById(R.id.add_friend_friend_fingerprint_text);
mFriendAddButton = (Button)findViewById(R.id.add_friend_add_button);
mFriendAddButton.setOnClickListener(this);
mReceivedFriend = null;
}
protected void showFriend() {
if (mReceivedFriend != null) {
try {
Robohash.setRobohashImage(this, mFriendAvatarImage, true, mReceivedFriend.mPublicIdentity);
mFriendNicknameText.setText(mReceivedFriend.mPublicIdentity.mNickname);
mFriendFingerprintText.setText(Utils.formatFingerprint(mReceivedFriend.mPublicIdentity.getFingerprint()));
return;
} catch (Utils.ApplicationError e) {
Log.addEntry(LOG_TAG, "failed to show friend");
}
}
}
@Override
public void onNewIntent(Intent intent) {
setIntent(intent);
}
private void setupForegroundDispatch() {
NfcAdapter nfcAdapter = getNfcAdapter();
if (nfcAdapter != null) {
IntentFilter intentFilter = new IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED);
try {
intentFilter.addDataType(getNfcMimeType());
} catch (IntentFilter.MalformedMimeTypeException e) {
Log.addEntry(LOG_TAG, e.getMessage());
return;
}
nfcAdapter.enableForegroundDispatch(
this,
PendingIntent.getActivity(
this,
0,
new Intent(this, getClass()).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP), 0),
new IntentFilter[] {intentFilter},
null);
}
}
@Override
public void onResume() {
super.onResume();
// TODO: ActivityGenerateSelf.checkLaunchGenerateSelf(this);?
// TODO: foreground dispatch causes onResume to be called?
Intent intent = getIntent();
if (NfcAdapter.ACTION_NDEF_DISCOVERED.equals(intent.getAction())) {
Parcelable[] ndefMessages = intent.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES);
NdefMessage ndefMessage = (NdefMessage)ndefMessages[0];
String payload = new String(ndefMessage.getRecords()[0].getPayload());
try {
Identity.PublicIdentity publicIdentity = Json.fromJson(payload, Identity.PublicIdentity.class);
Protocol.validatePublicIdentity(publicIdentity);
Data.Friend friend = new Data.Friend(publicIdentity, new Date());
// TODO: display validation error?
mReceivedFriend = friend;
showFriend();
// TODO: update add_friend_description_text as well?
} catch (Utils.ApplicationError e) {
Log.addEntry(LOG_TAG, "failed to handle inbound NFC message");
}
} else {
// Extract friend public identity from email attachment (or file)
InputStream inputStream = null;
try {
Uri uri = intent.getData();
if (uri.toString().startsWith(IDENTITY_LINK_PREFIX)) {
String fragment = uri.getFragment();
inputStream = new ByteArrayInputStream(fragment.getBytes("UTF-8"));
}
else {
String scheme = uri.getScheme();
if (ContentResolver.SCHEME_CONTENT.equals(scheme)) {
ContentResolver contentResolver = getContentResolver();
inputStream = contentResolver.openInputStream(uri);
} else {
String filePath = uri.getEncodedPath();
if (filePath != null) {
inputStream = new FileInputStream(new File(filePath));
}
}
}
if (inputStream != null) {
String payload = Utils.readInputStreamToString(inputStream);
Identity.PublicIdentity publicIdentity = Json.fromJson(payload, Identity.PublicIdentity.class);
Protocol.validatePublicIdentity(publicIdentity);
Data.Friend friend = new Data.Friend(publicIdentity, new Date());
// TODO: display validation error?
mReceivedFriend = friend;
showFriend();
}
} catch (IOException e) {
Log.addEntry(LOG_TAG, e.getMessage());
Log.addEntry(LOG_TAG, "failed to open .ploggy file");
} catch (Utils.ApplicationError e) {
Log.addEntry(LOG_TAG, "failed to open .ploggy file");
} finally {
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException e) {
}
}
}
}
// Use foreground dispatch to ensure repeated incoming beams don't create new activities
setupForegroundDispatch();
}
@Override
public void onPause() {
super.onPause();
NfcAdapter nfcAdapter = getNfcAdapter();
if (nfcAdapter != null) {
nfcAdapter.disableForegroundDispatch(this);
}
}
@Override
public void onClick(View view) {
if (view.equals(mFriendAddButton)) {
if (mReceivedFriend == null) {
return;
}
try {
Data.getInstance().addFriend(mReceivedFriend);
String prompt = getString(R.string.prompt_add_friend_friend_added, mReceivedFriend.mPublicIdentity.mNickname);
Toast.makeText(this, prompt, Toast.LENGTH_LONG).show();
finish();
} catch (Data.DataAlreadyExistsError e) {
String prompt = getString(R.string.prompt_add_friend_friend_already_exists, mReceivedFriend.mPublicIdentity.mNickname);
Toast.makeText(this, prompt, Toast.LENGTH_LONG).show();
} catch (Utils.ApplicationError e) {
Log.addEntry(LOG_TAG, "failed to add friend");
}
}
}
}
