/**
* Copyright 2010-present Facebook.
*
* 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.facebook.internal;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.pm.*;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.text.TextUtils;
import com.facebook.*;
import java.util.*;
/**
* com.facebook.internal is solely for the use of other packages within the Facebook SDK for Android. Use of
* any of the classes in this package is unsupported, and they may be modified or removed without warning at
* any time.
*/
public final class NativeProtocol {
public static final int NO_PROTOCOL_AVAILABLE = -1;
private static final String FACEBOOK_PROXY_AUTH_ACTIVITY = "com.facebook.katana.ProxyAuth";
private static final String FACEBOOK_TOKEN_REFRESH_ACTIVITY = "com.facebook.katana.platform.TokenRefreshService";
public static final String FACEBOOK_PROXY_AUTH_PERMISSIONS_KEY = "scope";
public static final String FACEBOOK_PROXY_AUTH_APP_ID_KEY = "client_id";
public static final String FACEBOOK_PROXY_AUTH_E2E_KEY = "e2e";
// ---------------------------------------------------------------------------------------------
// Native Protocol updated 2012-11
static final String INTENT_ACTION_PLATFORM_ACTIVITY = "com.facebook.platform.PLATFORM_ACTIVITY";
static final String INTENT_ACTION_PLATFORM_SERVICE = "com.facebook.platform.PLATFORM_SERVICE";
public static final int PROTOCOL_VERSION_20121101 = 20121101;
public static final int PROTOCOL_VERSION_20130502 = 20130502;
public static final int PROTOCOL_VERSION_20130618 = 20130618;
public static final int PROTOCOL_VERSION_20131107 = 20131107;
public static final int PROTOCOL_VERSION_20140204 = 20140204;
public static final int PROTOCOL_VERSION_20140324 = 20140324;
public static final String EXTRA_PROTOCOL_VERSION = "com.facebook.platform.protocol.PROTOCOL_VERSION";
public static final String EXTRA_PROTOCOL_ACTION = "com.facebook.platform.protocol.PROTOCOL_ACTION";
public static final String EXTRA_PROTOCOL_CALL_ID = "com.facebook.platform.protocol.CALL_ID";
public static final String EXTRA_GET_INSTALL_DATA_PACKAGE = "com.facebook.platform.extra.INSTALLDATA_PACKAGE";
// Messages supported by PlatformService:
public static final int MESSAGE_GET_ACCESS_TOKEN_REQUEST = 0x10000;
public static final int MESSAGE_GET_ACCESS_TOKEN_REPLY = 0x10001;
static final int MESSAGE_GET_PROTOCOL_VERSIONS_REQUEST = 0x10002;
static final int MESSAGE_GET_PROTOCOL_VERSIONS_REPLY = 0x10003;
public static final int MESSAGE_GET_INSTALL_DATA_REQUEST = 0x10004;
public static final int MESSAGE_GET_INSTALL_DATA_REPLY = 0x10005;
// MESSAGE_ERROR_REPLY data keys:
// See STATUS_*
// MESSAGE_GET_ACCESS_TOKEN_REQUEST data keys:
// EXTRA_APPLICATION_ID
// MESSAGE_GET_ACCESS_TOKEN_REPLY data keys:
// EXTRA_ACCESS_TOKEN
// EXTRA_EXPIRES_SECONDS_SINCE_EPOCH
// EXTRA_PERMISSIONS
// MESSAGE_GET_PROTOCOL_VERSIONS_REPLY data keys:
static final String EXTRA_PROTOCOL_VERSIONS = "com.facebook.platform.extra.PROTOCOL_VERSIONS";
// Values of EXTRA_PROTOCOL_ACTION supported by PlatformActivity:
public static final String ACTION_FEED_DIALOG = "com.facebook.platform.action.request.FEED_DIALOG";
public static final String ACTION_MESSAGE_DIALOG = "com.facebook.platform.action.request.MESSAGE_DIALOG";
public static final String ACTION_OGACTIONPUBLISH_DIALOG =
"com.facebook.platform.action.request.OGACTIONPUBLISH_DIALOG";
public static final String ACTION_OGMESSAGEPUBLISH_DIALOG =
"com.facebook.platform.action.request.OGMESSAGEPUBLISH_DIALOG";
// Values of EXTRA_PROTOCOL_ACTION values returned by PlatformActivity:
public static final String ACTION_FEED_DIALOG_REPLY =
"com.facebook.platform.action.reply.FEED_DIALOG";
public static final String ACTION_MESSAGE_DIALOG_REPLY =
"com.facebook.platform.action.reply.MESSAGE_DIALOG";
public static final String ACTION_OGACTIONPUBLISH_DIALOG_REPLY =
"com.facebook.platform.action.reply.OGACTIONPUBLISH_DIALOG";
public static final String ACTION_OGMESSAGEPUBLISH_DIALOG_REPLY =
"com.facebook.platform.action.reply.OGMESSAGEPUBLISH_DIALOG";
// Extras supported for ACTION_LOGIN_DIALOG:
public static final String EXTRA_PERMISSIONS = "com.facebook.platform.extra.PERMISSIONS";
public static final String EXTRA_APPLICATION_ID = "com.facebook.platform.extra.APPLICATION_ID";
public static final String EXTRA_APPLICATION_NAME = "com.facebook.platform.extra.APPLICATION_NAME";
// Extras returned by setResult() for ACTION_LOGIN_DIALOG
public static final String EXTRA_ACCESS_TOKEN = "com.facebook.platform.extra.ACCESS_TOKEN";
public static final String EXTRA_EXPIRES_SECONDS_SINCE_EPOCH =
"com.facebook.platform.extra.EXPIRES_SECONDS_SINCE_EPOCH";
// EXTRA_PERMISSIONS
// Extras supported for ACTION_FEED_DIALOG:
public static final String EXTRA_PLACE_TAG = "com.facebook.platform.extra.PLACE";
public static final String EXTRA_FRIEND_TAGS = "com.facebook.platform.extra.FRIENDS";
public static final String EXTRA_LINK = "com.facebook.platform.extra.LINK";
public static final String EXTRA_IMAGE = "com.facebook.platform.extra.IMAGE";
public static final String EXTRA_TITLE = "com.facebook.platform.extra.TITLE";
public static final String EXTRA_SUBTITLE = "com.facebook.platform.extra.SUBTITLE";
public static final String EXTRA_DESCRIPTION = "com.facebook.platform.extra.DESCRIPTION";
public static final String EXTRA_REF = "com.facebook.platform.extra.REF";
public static final String EXTRA_DATA_FAILURES_FATAL = "com.facebook.platform.extra.DATA_FAILURES_FATAL";
public static final String EXTRA_PHOTOS = "com.facebook.platform.extra.PHOTOS";
// Extras supported for ACTION_OGACTIONPUBLISH_DIALOG:
public static final String EXTRA_ACTION = "com.facebook.platform.extra.ACTION";
public static final String EXTRA_ACTION_TYPE = "com.facebook.platform.extra.ACTION_TYPE";
public static final String EXTRA_PREVIEW_PROPERTY_NAME =
"com.facebook.platform.extra.PREVIEW_PROPERTY_NAME";
// OG objects will have this key to set to true if they should be created as part of OG Action publish
public static final String OPEN_GRAPH_CREATE_OBJECT_KEY = "fbsdk:create_object";
// Determines whether an image is user generated
public static final String IMAGE_USER_GENERATED_KEY = "user_generated";
// url key for images
public static final String IMAGE_URL_KEY = "url";
// Keys for status data in MESSAGE_ERROR_REPLY from PlatformService and for error
// extras returned by PlatformActivity's setResult() in case of errors:
public static final String STATUS_ERROR_TYPE = "com.facebook.platform.status.ERROR_TYPE";
public static final String STATUS_ERROR_DESCRIPTION =
"com.facebook.platform.status.ERROR_DESCRIPTION";
public static final String STATUS_ERROR_CODE = "com.facebook.platform.status.ERROR_CODE";
public static final String STATUS_ERROR_SUBCODE = "com.facebook.platform.status.ERROR_SUBCODE";
public static final String STATUS_ERROR_JSON = "com.facebook.platform.status.ERROR_JSON";
// Expected values for ERROR_KEY_TYPE. Clients should tolerate other values:
public static final String ERROR_UNKNOWN_ERROR = "UnknownError";
public static final String ERROR_PROTOCOL_ERROR = "ProtocolError";
public static final String ERROR_USER_CANCELED = "UserCanceled";
public static final String ERROR_APPLICATION_ERROR = "ApplicationError";
public static final String ERROR_NETWORK_ERROR = "NetworkError";
public static final String ERROR_PERMISSION_DENIED = "PermissionDenied";
public static final String ERROR_SERVICE_DISABLED = "ServiceDisabled";
public static final String AUDIENCE_ME = "SELF";
public static final String AUDIENCE_FRIENDS = "ALL_FRIENDS";
public static final String AUDIENCE_EVERYONE = "EVERYONE";
// Request codes for different categories of native protocol calls.
public static final int DIALOG_REQUEST_CODE = 0xfacf;
private static final String CONTENT_SCHEME = "content://";
private static final String PLATFORM_PROVIDER_VERSIONS = ".provider.PlatformProvider/versions";
// Columns returned by PlatformProvider
private static final String PLATFORM_PROVIDER_VERSION_COLUMN = "version";
// Broadcast action for asynchronously-executing AppCalls
private static final String PLATFORM_ASYNC_APPCALL_ACTION = "com.facebook.platform.AppCallResultBroadcast";
private static abstract class NativeAppInfo {
abstract protected String getPackage();
private static final String FBI_HASH = "a4b7452e2ed8f5f191058ca7bbfd26b0d3214bfc";
private static final String FBL_HASH = "5e8f16062ea3cd2c4a0d547876baa6f38cabf625";
private static final String FBR_HASH = "8a3c4b262d721acd49a4bf97d5213199c86fa2b9";
private static final HashSet<String> validAppSignatureHashes = buildAppSignatureHashes();
private static HashSet<String> buildAppSignatureHashes() {
HashSet<String> set = new HashSet<String>();
set.add(FBR_HASH);
set.add(FBI_HASH);
set.add(FBL_HASH);
return set;
}
public boolean validateSignature(Context context, String packageName) {
String brand = Build.BRAND;
int applicationFlags = context.getApplicationInfo().flags;
if (brand.startsWith("generic") && (applicationFlags & ApplicationInfo.FLAG_DEBUGGABLE) != 0) {
// We are debugging on an emulator, don't validate package signature.
return true;
}
PackageInfo packageInfo = null;
try {
packageInfo = context.getPackageManager().getPackageInfo(packageName,
PackageManager.GET_SIGNATURES);
} catch (PackageManager.NameNotFoundException e) {
return false;
}
for (Signature signature : packageInfo.signatures) {
String hashedSignature = Utility.sha1hash(signature.toByteArray());
if (validAppSignatureHashes.contains(hashedSignature)) {
return true;
}
}
return false;
}
}
private static class KatanaAppInfo extends NativeAppInfo {
static final String KATANA_PACKAGE = "com.facebook.katana";
@Override
protected String getPackage() {
return KATANA_PACKAGE;
}
}
private static class MessengerAppInfo extends NativeAppInfo {
static final String MESSENGER_PACKAGE = "com.facebook.orca";
@Override
protected String getPackage() {
return MESSENGER_PACKAGE;
}
}
private static class WakizashiAppInfo extends NativeAppInfo {
static final String WAKIZASHI_PACKAGE = "com.facebook.wakizashi";
@Override
protected String getPackage() {
return WAKIZASHI_PACKAGE;
}
}
private static final NativeAppInfo FACEBOOK_APP_INFO = new KatanaAppInfo();
private static List<NativeAppInfo> facebookAppInfoList = buildFacebookAppList();
private static Map<String, List<NativeAppInfo>> actionToAppInfoMap = buildActionToAppInfoMap();
private static List<NativeAppInfo> buildFacebookAppList() {
List<NativeAppInfo> list = new ArrayList<NativeAppInfo>();
// Katana needs to be the first thing in the list since it will get selected as the default FACEBOOK_APP_INFO
list.add(FACEBOOK_APP_INFO);
list.add(new WakizashiAppInfo());
return list;
}
private static Map<String, List<NativeAppInfo>> buildActionToAppInfoMap() {
Map<String, List<NativeAppInfo>> map = new HashMap<String, List<NativeAppInfo>>();
ArrayList<NativeAppInfo> messengerAppInfoList = new ArrayList<NativeAppInfo>();
messengerAppInfoList.add(new MessengerAppInfo());
// Add individual actions and the list they should try
map.put(ACTION_OGACTIONPUBLISH_DIALOG, facebookAppInfoList);
map.put(ACTION_FEED_DIALOG, facebookAppInfoList);
map.put(ACTION_MESSAGE_DIALOG, messengerAppInfoList);
map.put(ACTION_OGMESSAGEPUBLISH_DIALOG, messengerAppInfoList);
return map;
}
static Intent validateActivityIntent(Context context, Intent intent, NativeAppInfo appInfo) {
if (intent == null) {
return null;
}
ResolveInfo resolveInfo = context.getPackageManager().resolveActivity(intent, 0);
if (resolveInfo == null) {
return null;
}
if (!appInfo.validateSignature(context, resolveInfo.activityInfo.packageName)) {
return null;
}
return intent;
}
static Intent validateServiceIntent(Context context, Intent intent, NativeAppInfo appInfo) {
if (intent == null) {
return null;
}
ResolveInfo resolveInfo = context.getPackageManager().resolveService(intent, 0);
if (resolveInfo == null) {
return null;
}
if (!appInfo.validateSignature(context, resolveInfo.serviceInfo.packageName)) {
return null;
}
return intent;
}
public static Intent createProxyAuthIntent(Context context, String applicationId, List<String> permissions,
String e2e, boolean isRerequest) {
for (NativeAppInfo appInfo : facebookAppInfoList) {
Intent intent = new Intent()
.setClassName(appInfo.getPackage(), FACEBOOK_PROXY_AUTH_ACTIVITY)
.putExtra(FACEBOOK_PROXY_AUTH_APP_ID_KEY, applicationId);
if (!Utility.isNullOrEmpty(permissions)) {
intent.putExtra(FACEBOOK_PROXY_AUTH_PERMISSIONS_KEY, TextUtils.join(",", permissions));
}
if (!Utility.isNullOrEmpty(e2e)) {
intent.putExtra(FACEBOOK_PROXY_AUTH_E2E_KEY, e2e);
}
intent.putExtra(ServerProtocol.DIALOG_PARAM_RESPONSE_TYPE, ServerProtocol.DIALOG_RESPONSE_TYPE_TOKEN);
intent.putExtra(ServerProtocol.DIALOG_PARAM_RETURN_SCOPES, ServerProtocol.DIALOG_RETURN_SCOPES_TRUE);
if (!Settings.getPlatformCompatibilityEnabled()) {
// Override the API Version for Auth
intent.putExtra(ServerProtocol.DIALOG_PARAM_LEGACY_OVERRIDE, ServerProtocol.GRAPH_API_VERSION);
// Only set the rerequest auth type for non legacy requests
if (isRerequest) {
intent.putExtra(ServerProtocol.DIALOG_PARAM_AUTH_TYPE, ServerProtocol.DIALOG_REREQUEST_AUTH_TYPE);
}
}
intent = validateActivityIntent(context, intent, appInfo);
if (intent != null) {
return intent;
}
}
return null;
}
public static Intent createTokenRefreshIntent(Context context) {
for (NativeAppInfo appInfo : facebookAppInfoList) {
Intent intent = new Intent()
.setClassName(appInfo.getPackage(), FACEBOOK_TOKEN_REFRESH_ACTIVITY);
intent = validateServiceIntent(context, intent, appInfo);
if (intent != null) {
return intent;
}
}
return null;
}
// Note: be sure this stays sorted in descending order; add new versions at the beginning
private static final List<Integer> KNOWN_PROTOCOL_VERSIONS =
Arrays.asList(
PROTOCOL_VERSION_20140324,
PROTOCOL_VERSION_20140204,
PROTOCOL_VERSION_20131107,
PROTOCOL_VERSION_20130618,
PROTOCOL_VERSION_20130502,
PROTOCOL_VERSION_20121101
);
private static Intent findActivityIntent(Context context, String activityAction, String internalAction) {
List<NativeAppInfo> list = actionToAppInfoMap.get(internalAction);
if (list == null) {
return null;
}
Intent intent = null;
for (NativeAppInfo appInfo : list) {
intent = new Intent()
.setAction(activityAction)
.setPackage(appInfo.getPackage())
.addCategory(Intent.CATEGORY_DEFAULT);
intent = validateActivityIntent(context, intent, appInfo);
if (intent != null) {
return intent;
}
}
return intent;
}
public static Intent createPlatformActivityIntent(Context context, String action, int version, Bundle extras) {
Intent intent = findActivityIntent(context, INTENT_ACTION_PLATFORM_ACTIVITY, action);
if (intent == null) {
return null;
}
intent.putExtras(extras)
.putExtra(EXTRA_PROTOCOL_VERSION, version)
.putExtra(EXTRA_PROTOCOL_ACTION, action);
return intent;
}
public static Intent createPlatformServiceIntent(Context context) {
for (NativeAppInfo appInfo : facebookAppInfoList) {
Intent intent = new Intent(INTENT_ACTION_PLATFORM_SERVICE)
.setPackage(appInfo.getPackage())
.addCategory(Intent.CATEGORY_DEFAULT);
intent = validateServiceIntent(context, intent, appInfo);
if (intent != null) {
return intent;
}
}
return null;
}
public static boolean isErrorResult(Intent resultIntent) {
return resultIntent.hasExtra(STATUS_ERROR_TYPE);
}
public static Exception getErrorFromResult(Intent resultIntent) {
if (!isErrorResult(resultIntent)) {
return null;
}
String type = resultIntent.getStringExtra(STATUS_ERROR_TYPE);
String description = resultIntent.getStringExtra(STATUS_ERROR_DESCRIPTION);
if (type.equalsIgnoreCase(ERROR_USER_CANCELED)) {
return new FacebookOperationCanceledException(description);
}
/* TODO parse error values and create appropriate exception class */
return new FacebookException(description);
}
public static int getLatestAvailableProtocolVersionForService(Context context, final int minimumVersion) {
// Services are currently always against the Facebook App
return getLatestAvailableProtocolVersionForAppInfoList(context, facebookAppInfoList, minimumVersion);
}
public static int getLatestAvailableProtocolVersionForAction(Context context, String action, final int minimumVersion) {
List<NativeAppInfo> appInfoList = actionToAppInfoMap.get(action);
return getLatestAvailableProtocolVersionForAppInfoList(context, appInfoList, minimumVersion);
}
private static int getLatestAvailableProtocolVersionForAppInfoList(Context context, List<NativeAppInfo> appInfoList,
final int minimumVersion) {
if (appInfoList == null) {
return NO_PROTOCOL_AVAILABLE;
}
// Could potentially cache the NativeAppInfo to latestProtocolVersion
for (NativeAppInfo appInfo : appInfoList) {
int protocolVersion = getLatestAvailableProtocolVersionForAppInfo(context, appInfo, minimumVersion);
if (protocolVersion != NO_PROTOCOL_AVAILABLE) {
return protocolVersion;
}
}
return NO_PROTOCOL_AVAILABLE;
}
private static int getLatestAvailableProtocolVersionForAppInfo(Context context, NativeAppInfo appInfo,
final int minimumVersion) {
ContentResolver contentResolver = context.getContentResolver();
String [] projection = new String[]{ PLATFORM_PROVIDER_VERSION_COLUMN };
Uri uri = buildPlatformProviderVersionURI(appInfo);
Cursor c = null;
try {
c = contentResolver.query(uri, projection, null, null, null);
if (c == null) {
return NO_PROTOCOL_AVAILABLE;
}
Set<Integer> versions = new HashSet<Integer>();
while (c.moveToNext()) {
int version = c.getInt(c.getColumnIndex(PLATFORM_PROVIDER_VERSION_COLUMN));
versions.add(version);
}
for (Integer knownVersion : KNOWN_PROTOCOL_VERSIONS) {
if (knownVersion < minimumVersion) {
return NO_PROTOCOL_AVAILABLE;
}
if (versions.contains(knownVersion)) {
return knownVersion;
}
}
} finally {
if (c != null) {
c.close();
}
}
return NO_PROTOCOL_AVAILABLE;
}
private static Uri buildPlatformProviderVersionURI(NativeAppInfo appInfo) {
return Uri.parse(CONTENT_SCHEME + appInfo.getPackage() + PLATFORM_PROVIDER_VERSIONS);
}
}