| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| package org.chromium.chrome.browser.externalnav; |
| |
| import static org.chromium.chrome.browser.customtabs.CustomTabIntentDataProvider.EXTRA_BROWSER_LAUNCH_SOURCE; |
| |
| import android.content.ActivityNotFoundException; |
| import android.content.ComponentName; |
| import android.content.Intent; |
| import android.content.pm.ActivityInfo; |
| import android.content.pm.ResolveInfo; |
| import android.net.Uri; |
| import android.os.SystemClock; |
| import android.provider.Browser; |
| import android.text.TextUtils; |
| import android.util.Pair; |
| import android.webkit.WebView; |
| |
| import androidx.annotation.IntDef; |
| import androidx.annotation.Nullable; |
| |
| import org.chromium.base.CommandLine; |
| import org.chromium.base.ContextUtils; |
| import org.chromium.base.Log; |
| import org.chromium.base.VisibleForTesting; |
| import org.chromium.base.metrics.RecordHistogram; |
| import org.chromium.base.metrics.RecordUserAction; |
| import org.chromium.chrome.browser.ChromeFeatureList; |
| import org.chromium.chrome.browser.ChromeSwitches; |
| import org.chromium.chrome.browser.IntentHandler; |
| import org.chromium.chrome.browser.customtabs.CustomTabIntentDataProvider.LaunchSourceType; |
| import org.chromium.chrome.browser.instantapps.InstantAppsHandler; |
| import org.chromium.chrome.browser.tab.Tab; |
| import org.chromium.chrome.browser.tab.TabRedirectHandler; |
| import org.chromium.chrome.browser.util.IntentUtils; |
| import org.chromium.chrome.browser.util.UrlConstants; |
| import org.chromium.chrome.browser.util.UrlUtilities; |
| import org.chromium.chrome.browser.webapps.WebappScopePolicy; |
| import org.chromium.content_public.common.ContentUrlConstants; |
| import org.chromium.ui.base.PageTransition; |
| |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| |
| /** |
| * Logic related to the URL overriding/intercepting functionality. |
| * This feature allows Chrome to convert certain navigations to Android Intents allowing |
| * applications like Youtube to direct users clicking on a http(s) link to their native app. |
| */ |
| public class ExternalNavigationHandler { |
| private static final String TAG = "UrlHandler"; |
| |
| // Enables debug logging on a local build. |
| private static final boolean DEBUG = false; |
| |
| private static final String WTAI_URL_PREFIX = "wtai://wp/"; |
| private static final String WTAI_MC_URL_PREFIX = "wtai://wp/mc;"; |
| |
| private static final String PLAY_PACKAGE_PARAM = "id"; |
| private static final String PLAY_REFERRER_PARAM = "referrer"; |
| private static final String PLAY_APP_PATH = "/store/apps/details"; |
| private static final String PLAY_HOSTNAME = "play.google.com"; |
| |
| @VisibleForTesting |
| static final String EXTRA_BROWSER_FALLBACK_URL = "browser_fallback_url"; |
| |
| // An extra that may be specified on an intent:// URL that contains an encoded value for the |
| // referrer field passed to the market:// URL in the case where the app is not present. |
| @VisibleForTesting |
| static final String EXTRA_MARKET_REFERRER = "market_referrer"; |
| |
| // These values are persisted in histograms. Please do not renumber. Append only. |
| @IntDef({AiaIntent.FALLBACK_USED, AiaIntent.SERP, AiaIntent.OTHER}) |
| @Retention(RetentionPolicy.SOURCE) |
| public @interface AiaIntent { |
| int FALLBACK_USED = 0; |
| int SERP = 1; |
| int OTHER = 2; |
| |
| int NUM_ENTRIES = 3; |
| } |
| |
| private final ExternalNavigationDelegate mDelegate; |
| |
| /** |
| * Result types for checking if we should override URL loading. |
| * NOTE: this enum is used in UMA, do not reorder values. Changes should be append only. |
| * Values should be numerated from 0 and can't have gaps. |
| */ |
| @IntDef({OverrideUrlLoadingResult.OVERRIDE_WITH_EXTERNAL_INTENT, |
| OverrideUrlLoadingResult.OVERRIDE_WITH_CLOBBERING_TAB, |
| OverrideUrlLoadingResult.OVERRIDE_WITH_ASYNC_ACTION, |
| OverrideUrlLoadingResult.NO_OVERRIDE}) |
| @Retention(RetentionPolicy.SOURCE) |
| public @interface OverrideUrlLoadingResult { |
| /* We should override the URL loading and launch an intent. */ |
| int OVERRIDE_WITH_EXTERNAL_INTENT = 0; |
| /* We should override the URL loading and clobber the current tab. */ |
| int OVERRIDE_WITH_CLOBBERING_TAB = 1; |
| /* We should override the URL loading. The desired action will be determined |
| * asynchronously (e.g. by requiring user confirmation). */ |
| int OVERRIDE_WITH_ASYNC_ACTION = 2; |
| /* We shouldn't override the URL loading. */ |
| int NO_OVERRIDE = 3; |
| |
| int NUM_ENTRIES = 4; |
| } |
| |
| /** |
| * A constructor for UrlHandler. |
| * |
| * @param tab The tab that initiated the external intent. |
| */ |
| public ExternalNavigationHandler(Tab tab) { |
| this(new ExternalNavigationDelegateImpl(tab)); |
| } |
| |
| /** |
| * Constructs a new instance of {@link ExternalNavigationHandler}, using the injected |
| * {@link ExternalNavigationDelegate}. |
| */ |
| public ExternalNavigationHandler(ExternalNavigationDelegate delegate) { |
| mDelegate = delegate; |
| } |
| |
| /** |
| * Determines whether the URL needs to be sent as an intent to the system, |
| * and sends it, if appropriate. |
| * @return Whether the URL generated an intent, caused a navigation in |
| * current tab, or wasn't handled at all. |
| */ |
| public @OverrideUrlLoadingResult int shouldOverrideUrlLoading(ExternalNavigationParams params) { |
| if (DEBUG) Log.i(TAG, "shouldOverrideUrlLoading called on " + params.getUrl()); |
| Intent targetIntent; |
| // Perform generic parsing of the URI to turn it into an Intent. |
| try { |
| targetIntent = Intent.parseUri(params.getUrl(), Intent.URI_INTENT_SCHEME); |
| } catch (Exception ex) { |
| Log.w(TAG, "Bad URI %s", params.getUrl(), ex); |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } |
| |
| String browserFallbackUrl = |
| IntentUtils.safeGetStringExtra(targetIntent, EXTRA_BROWSER_FALLBACK_URL); |
| if (browserFallbackUrl != null |
| && !UrlUtilities.isValidForIntentFallbackNavigation(browserFallbackUrl)) { |
| browserFallbackUrl = null; |
| } |
| |
| long time = SystemClock.elapsedRealtime(); |
| @OverrideUrlLoadingResult |
| int result = shouldOverrideUrlLoadingInternal(params, targetIntent, browserFallbackUrl); |
| RecordHistogram.recordTimesHistogram( |
| "Android.StrictMode.OverrideUrlLoadingTime", SystemClock.elapsedRealtime() - time); |
| |
| if (result != OverrideUrlLoadingResult.NO_OVERRIDE) { |
| int pageTransitionCore = params.getPageTransition() & PageTransition.CORE_MASK; |
| boolean isFormSubmit = pageTransitionCore == PageTransition.FORM_SUBMIT; |
| boolean isRedirectFromFormSubmit = isFormSubmit && params.isRedirect(); |
| if (isRedirectFromFormSubmit) { |
| RecordHistogram.recordBooleanHistogram( |
| "Android.Intent.LaunchExternalAppFormSubmitHasUserGesture", |
| params.hasUserGesture()); |
| } |
| } else if (result == OverrideUrlLoadingResult.NO_OVERRIDE && browserFallbackUrl != null |
| && (params.getRedirectHandler() == null |
| // For instance, if this is a chained fallback URL, we ignore it. |
| || !params.getRedirectHandler().shouldNotOverrideUrlLoading())) { |
| result = handleFallbackUrl(params, targetIntent, browserFallbackUrl); |
| } |
| if (DEBUG) printDebugShouldOverrideUrlLoadingResult(result); |
| return result; |
| } |
| |
| private @OverrideUrlLoadingResult int handleFallbackUrl( |
| ExternalNavigationParams params, Intent targetIntent, String browserFallbackUrl) { |
| if (InstantAppsHandler.isIntentToInstantApp(targetIntent)) { |
| RecordHistogram.recordEnumeratedHistogram("Android.InstantApps.DirectInstantAppsIntent", |
| AiaIntent.FALLBACK_USED, AiaIntent.NUM_ENTRIES); |
| } |
| // Launch WebAPK if it can handle the URL. |
| try { |
| Intent intent = Intent.parseUri(browserFallbackUrl, Intent.URI_INTENT_SCHEME); |
| sanitizeQueryIntentActivitiesIntent(intent); |
| List<ResolveInfo> resolvingInfos = mDelegate.queryIntentActivities(intent); |
| if (!shouldStayInWebApkCCT(params, resolvingInfos) |
| && !isAlreadyInTargetWebApk(resolvingInfos, params) |
| && launchWebApkIfSoleIntentHandler(resolvingInfos, intent)) { |
| return OverrideUrlLoadingResult.OVERRIDE_WITH_EXTERNAL_INTENT; |
| } |
| } catch (Exception e) { |
| if (DEBUG) Log.i(TAG, "Could not parse fallback url as intent"); |
| } |
| return clobberCurrentTabWithFallbackUrl(browserFallbackUrl, params); |
| } |
| |
| private void printDebugShouldOverrideUrlLoadingResult(int result) { |
| String resultString; |
| switch (result) { |
| case OverrideUrlLoadingResult.OVERRIDE_WITH_EXTERNAL_INTENT: |
| resultString = "OVERRIDE_WITH_EXTERNAL_INTENT"; |
| break; |
| case OverrideUrlLoadingResult.OVERRIDE_WITH_CLOBBERING_TAB: |
| resultString = "OVERRIDE_WITH_CLOBBERING_TAB"; |
| break; |
| case OverrideUrlLoadingResult.OVERRIDE_WITH_ASYNC_ACTION: |
| resultString = "OVERRIDE_WITH_ASYNC_ACTION"; |
| break; |
| case OverrideUrlLoadingResult.NO_OVERRIDE: // Fall through. |
| default: |
| resultString = "NO_OVERRIDE"; |
| break; |
| } |
| Log.i(TAG, "shouldOverrideUrlLoading result: " + resultString); |
| } |
| |
| private boolean resolversSubsetOf(List<ResolveInfo> infos, List<ResolveInfo> container) { |
| if (container == null) return false; |
| HashSet<ComponentName> containerSet = new HashSet<>(); |
| for (ResolveInfo info : container) { |
| containerSet.add( |
| new ComponentName(info.activityInfo.packageName, info.activityInfo.name)); |
| } |
| for (ResolveInfo info : infos) { |
| if (!containerSet.contains(new ComponentName( |
| info.activityInfo.packageName, info.activityInfo.name))) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * http://crbug.com/441284 : Disallow firing external intent while Chrome is in the background. |
| */ |
| private boolean blockExternalNavWhileBackgrounded(ExternalNavigationParams params) { |
| if (params.isApplicationMustBeInForeground() && !mDelegate.isChromeAppInForeground()) { |
| if (DEBUG) Log.i(TAG, "Chrome is not in foreground"); |
| return true; |
| } |
| return false; |
| } |
| |
| /** http://crbug.com/464669 : Disallow firing external intent from background tab. */ |
| private boolean blockExternalNavFromBackgroundTab(ExternalNavigationParams params) { |
| if (params.isBackgroundTabNavigation()) { |
| if (DEBUG) Log.i(TAG, "Navigation in background tab"); |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * http://crbug.com/164194 . A navigation forwards or backwards should never trigger the intent |
| * picker. |
| */ |
| private boolean ignoreBackForwardNav(ExternalNavigationParams params) { |
| if ((params.getPageTransition() & PageTransition.FORWARD_BACK) != 0) { |
| if (DEBUG) Log.i(TAG, "Forward or back navigation"); |
| return true; |
| } |
| return false; |
| } |
| |
| /** http://crbug.com/605302 : Allow Chrome to handle all pdf file downloads. */ |
| private boolean isInternalPdfDownload( |
| boolean isExternalProtocol, ExternalNavigationParams params) { |
| if (!isExternalProtocol && mDelegate.isPdfDownload(params.getUrl())) { |
| if (DEBUG) Log.i(TAG, "PDF downloads are now handled by Chrome"); |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * If accessing a file URL, ensure that the user has granted the necessary file access |
| * to Chrome. |
| */ |
| private boolean startFileIntentIfNecessary( |
| ExternalNavigationParams params, Intent targetIntent) { |
| if (params.getUrl().startsWith(UrlConstants.FILE_URL_SHORT_PREFIX) |
| && mDelegate.shouldRequestFileAccess(params.getUrl())) { |
| mDelegate.startFileIntent(targetIntent, params.getReferrerUrl(), |
| params.shouldCloseContentsOnOverrideUrlLoadingAndLaunchIntent()); |
| if (DEBUG) Log.i(TAG, "Requesting filesystem access"); |
| return true; |
| } |
| return false; |
| } |
| |
| private boolean isTypedRedirectToExternalProtocol( |
| ExternalNavigationParams params, int pageTransitionCore, boolean isExternalProtocol) { |
| boolean isTyped = (pageTransitionCore == PageTransition.TYPED) |
| || ((params.getPageTransition() & PageTransition.FROM_ADDRESS_BAR) != 0); |
| return isTyped && params.isRedirect() && isExternalProtocol; |
| } |
| |
| /** |
| * http://crbug.com/659301: Don't stay in Chrome for Custom Tabs redirecting to Instant Apps. |
| */ |
| private boolean handleCCTRedirectsToInstantApps(ExternalNavigationParams params, |
| boolean isExternalProtocol, boolean incomingIntentRedirect) { |
| TabRedirectHandler handler = params.getRedirectHandler(); |
| if (handler == null) return false; |
| if (handler.isFromCustomTabIntent() && !isExternalProtocol && incomingIntentRedirect |
| && !handler.shouldNavigationTypeStayInChrome() |
| && mDelegate.maybeLaunchInstantApp( |
| params.getUrl(), params.getReferrerUrl(), true)) { |
| if (DEBUG) { |
| Log.i(TAG, "Launching redirect to an instant app"); |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| private boolean redirectShouldStayInChrome( |
| ExternalNavigationParams params, boolean isExternalProtocol, Intent targetIntent) { |
| TabRedirectHandler handler = params.getRedirectHandler(); |
| if (handler == null) return false; |
| boolean shouldStayInChrome = handler.shouldStayInChrome( |
| isExternalProtocol, mDelegate.isIntentForTrustedCallingApp(targetIntent)); |
| if (shouldStayInChrome || handler.shouldNotOverrideUrlLoading()) { |
| if (DEBUG) Log.i(TAG, "RedirectHandler decision"); |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * http://crbug.com/149218: We want to show the intent picker for ordinary links, providing |
| * the link is not an incoming intent from another application, unless it's a redirect. |
| */ |
| private boolean preferToShowIntentPicker(ExternalNavigationParams params, |
| int pageTransitionCore, boolean isExternalProtocol, boolean isFormSubmit, |
| boolean linkNotFromIntent, boolean incomingIntentRedirect) { |
| // http://crbug.com/169549 : If you type in a URL that then redirects in server side to a |
| // link that cannot be rendered by the browser, we want to show the intent picker. |
| if (isTypedRedirectToExternalProtocol(params, pageTransitionCore, isExternalProtocol)) { |
| return true; |
| } |
| // http://crbug.com/181186: We need to show the intent picker when we receive a redirect |
| // following a form submit. |
| boolean isRedirectFromFormSubmit = isFormSubmit && params.isRedirect(); |
| |
| if (!linkNotFromIntent && !incomingIntentRedirect && !isRedirectFromFormSubmit) { |
| if (DEBUG) Log.i(TAG, "Incoming intent (not a redirect)"); |
| return false; |
| } |
| // http://crbug.com/839751: Require user gestures for form submits to external |
| // protocols. |
| // TODO(tedchoc): Remove the ChromeFeatureList check once we verify this change does |
| // not break the world. |
| if (isRedirectFromFormSubmit && !incomingIntentRedirect && !params.hasUserGesture() |
| && ChromeFeatureList.isEnabled( |
| ChromeFeatureList.INTENT_BLOCK_EXTERNAL_FORM_REDIRECT_NO_GESTURE)) { |
| if (DEBUG) { |
| Log.i(TAG, |
| "Incoming form intent attempting to redirect without " |
| + "user gesture"); |
| } |
| return false; |
| } |
| // http://crbug/331571 : Do not override a navigation started from user typing. |
| if (params.getRedirectHandler() != null |
| && params.getRedirectHandler().isNavigationFromUserTyping()) { |
| if (DEBUG) Log.i(TAG, "Navigation from user typing"); |
| return false; |
| } |
| return true; |
| } |
| |
| /** |
| * http://crbug.com/159153: Don't override navigation from a chrome:* url to http or https. For |
| * example when clicking a link in bookmarks or most visited. When navigating from such a page, |
| * there is clear intent to complete the navigation in Chrome. |
| */ |
| private boolean isLinkFromChromeInternalPage(ExternalNavigationParams params) { |
| if (params.getReferrerUrl() == null) return false; |
| if (params.getReferrerUrl().startsWith(UrlConstants.CHROME_URL_PREFIX) |
| && (params.getUrl().startsWith(UrlConstants.HTTP_URL_PREFIX) |
| || params.getUrl().startsWith(UrlConstants.HTTPS_URL_PREFIX))) { |
| if (DEBUG) Log.i(TAG, "Link from an internal chrome:// page"); |
| return true; |
| } |
| return false; |
| } |
| |
| private boolean handleWtaiMcProtocol(ExternalNavigationParams params) { |
| if (!params.getUrl().startsWith(WTAI_MC_URL_PREFIX)) return false; |
| // wtai://wp/mc;number |
| // number=string(phone-number) |
| mDelegate.startActivity( |
| new Intent(Intent.ACTION_VIEW, |
| Uri.parse(WebView.SCHEME_TEL |
| + params.getUrl().substring(WTAI_MC_URL_PREFIX.length()))), |
| false); |
| if (DEBUG) Log.i(TAG, "wtai:// link handled"); |
| RecordUserAction.record("Android.PhoneIntent"); |
| return true; |
| } |
| |
| private boolean isUnhandledWtaiProtocol(ExternalNavigationParams params) { |
| if (!params.getUrl().startsWith(WTAI_URL_PREFIX)) return false; |
| if (DEBUG) Log.i(TAG, "Unsupported wtai:// link"); |
| return true; |
| } |
| |
| /** |
| * The "about:", "chrome:", "chrome-native:", "chrome-devtools:", and "devtools:" schemes |
| * are internal to the browser; don't want these to be dispatched to other apps. |
| */ |
| private boolean hasInternalScheme(ExternalNavigationParams params) { |
| if (params.getUrl().startsWith(ContentUrlConstants.ABOUT_URL_SHORT_PREFIX) |
| || params.getUrl().startsWith(UrlConstants.CHROME_URL_SHORT_PREFIX) |
| || params.getUrl().startsWith(UrlConstants.CHROME_NATIVE_URL_SHORT_PREFIX) |
| || params.getUrl().startsWith(UrlConstants.DEVTOOLS_URL_SHORT_PREFIX) |
| || params.getUrl().startsWith(UrlConstants.DEVTOOLS_FALLBACK_URL_SHORT_PREFIX)) { |
| if (DEBUG) Log.i(TAG, "Navigating to a chrome-internal page"); |
| return true; |
| } |
| return false; |
| } |
| |
| /** The "content:" scheme is disabled in Clank. Do not try to start an activity. */ |
| private boolean hasContentScheme(ExternalNavigationParams params) { |
| if (!params.getUrl().startsWith(UrlConstants.CONTENT_URL_SHORT_PREFIX)) return false; |
| if (DEBUG) Log.i(TAG, "Navigation to content: URL"); |
| return true; |
| } |
| |
| /** |
| * Special case - It makes no sense to use an external application for a YouTube |
| * pairing code URL, since these match the current tab with a device (Chromecast |
| * or similar) it is supposed to be controlling. Using a different application |
| * that isn't expecting this (in particular YouTube) doesn't work. |
| */ |
| private boolean isYoutubePairingCode(ExternalNavigationParams params) { |
| // TODO(https://crbug.com/1009539): Replace this regex with proper URI parsing. |
| if (params.getUrl().matches(".*youtube\\.com(\\/.*)?\\?(.+&)?pairingCode=[^&].+")) { |
| if (DEBUG) Log.i(TAG, "YouTube URL with a pairing code"); |
| return true; |
| } |
| return false; |
| } |
| |
| private boolean externalIntentRequestsDisabled() { |
| // TODO(changwan): check if we need to handle URL even when external intent is off. |
| if (CommandLine.getInstance().hasSwitch(ChromeSwitches.DISABLE_EXTERNAL_INTENT_REQUESTS)) { |
| Log.w(TAG, "External intent handling is disabled by a command-line flag."); |
| return true; |
| } |
| return false; |
| } |
| |
| // http://crbug.com/647569 : Stay in a PWA window for a URL within the same scope. |
| private boolean shouldStayInWebapp(ExternalNavigationParams params) { |
| @WebappScopePolicy.NavigationDirective |
| int webappScopePolicyDirective = mDelegate.applyWebappScopePolicyForUrl(params.getUrl()); |
| if (webappScopePolicyDirective |
| == WebappScopePolicy.NavigationDirective.IGNORE_EXTERNAL_INTENT_REQUESTS) { |
| if (DEBUG) Log.i(TAG, "Stay in PWA window"); |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * If the intent can't be resolved, we should fall back to the browserFallbackUrl, or try to |
| * find the app on the market if no fallback is provided. |
| */ |
| private int handleUnresolvableIntent( |
| ExternalNavigationParams params, Intent targetIntent, String browserFallbackUrl) { |
| // Fallback URL will be handled by the caller of shouldOverrideUrlLoadingInternal. |
| if (browserFallbackUrl != null) return OverrideUrlLoadingResult.NO_OVERRIDE; |
| if (targetIntent.getPackage() != null) return handleWithMarketIntent(params, targetIntent); |
| |
| if (DEBUG) Log.i(TAG, "Could not find an external activity to use"); |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } |
| |
| private @OverrideUrlLoadingResult int handleWithMarketIntent( |
| ExternalNavigationParams params, Intent intent) { |
| String marketReferrer = IntentUtils.safeGetStringExtra(intent, EXTRA_MARKET_REFERRER); |
| if (TextUtils.isEmpty(marketReferrer)) { |
| marketReferrer = ContextUtils.getApplicationContext().getPackageName(); |
| } |
| return sendIntentToMarket(intent.getPackage(), marketReferrer, params); |
| } |
| |
| private boolean maybeSetSmsPackage(Intent targetIntent) { |
| final Uri uri = targetIntent.getData(); |
| if (targetIntent.getPackage() == null && uri != null |
| && UrlConstants.SMS_SCHEME.equals(uri.getScheme())) { |
| List<ResolveInfo> resolvingInfos = mDelegate.queryIntentActivities(targetIntent); |
| targetIntent.setPackage(getDefaultSmsPackageName(resolvingInfos)); |
| return true; |
| } |
| return false; |
| } |
| |
| private void maybeRecordPhoneIntentMetrics(Intent targetIntent) { |
| final Uri uri = targetIntent.getData(); |
| if (uri != null && UrlConstants.TEL_SCHEME.equals(uri.getScheme()) |
| || (Intent.ACTION_DIAL.equals(targetIntent.getAction())) |
| || (Intent.ACTION_CALL.equals(targetIntent.getAction()))) { |
| RecordUserAction.record("Android.PhoneIntent"); |
| } |
| } |
| |
| /** |
| * In incognito mode, links that can be handled within the browser should just do so, |
| * without asking the user. |
| */ |
| private boolean shouldStayInIncognito( |
| ExternalNavigationParams params, boolean isExternalProtocol) { |
| if (params.isIncognito() && !isExternalProtocol) { |
| if (DEBUG) Log.i(TAG, "Stay incognito"); |
| return true; |
| } |
| return false; |
| } |
| |
| private boolean fallBackToHandlingWithInstantApp(ExternalNavigationParams params, |
| boolean incomingIntentRedirect, boolean linkNotFromIntent) { |
| if (incomingIntentRedirect |
| && mDelegate.maybeLaunchInstantApp( |
| params.getUrl(), params.getReferrerUrl(), true)) { |
| if (DEBUG) Log.i(TAG, "Launching instant Apps redirect"); |
| return true; |
| } else if (linkNotFromIntent && !params.isIncognito() |
| && mDelegate.maybeLaunchInstantApp( |
| params.getUrl(), params.getReferrerUrl(), false)) { |
| if (DEBUG) Log.i(TAG, "Launching instant Apps link"); |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * This is the catch-all path for any intent that Chrome can handle that doesn't have a |
| * specialized external app handling it. |
| */ |
| private @OverrideUrlLoadingResult int fallBackToHandlingInChrome() { |
| if (DEBUG) Log.i(TAG, "No specialized handler for URL"); |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } |
| |
| /** |
| * Current URL has at least one specialized handler available. For navigations |
| * within the same host, keep the navigation inside the browser unless the set of |
| * available apps to handle the new navigation is different. http://crbug.com/463138 |
| */ |
| private boolean shouldStayWithinHost(ExternalNavigationParams params, boolean isLink, |
| boolean isFormSubmit, List<ResolveInfo> resolvingInfos, boolean isExternalProtocol) { |
| if (isExternalProtocol) return false; |
| |
| // TODO(https://crbug.com/1009539): Replace this host parsing with a UrlUtilities or GURL |
| // function call. |
| String delegatePreviousUrl = mDelegate.getPreviousUrl(); |
| String previousUriString = |
| delegatePreviousUrl != null ? delegatePreviousUrl : params.getReferrerUrl(); |
| if (previousUriString == null || (!isLink && !isFormSubmit)) return false; |
| |
| URI currentUri; |
| URI previousUri; |
| |
| try { |
| currentUri = new URI(params.getUrl()); |
| previousUri = new URI(previousUriString); |
| } catch (Exception e) { |
| return false; |
| } |
| |
| if (currentUri == null || previousUri == null |
| || !TextUtils.equals(currentUri.getHost(), previousUri.getHost())) { |
| return false; |
| } |
| |
| Intent previousIntent; |
| try { |
| previousIntent = Intent.parseUri(previousUriString, Intent.URI_INTENT_SCHEME); |
| } catch (Exception e) { |
| return false; |
| } |
| |
| if (previousIntent != null |
| && resolversSubsetOf( |
| resolvingInfos, mDelegate.queryIntentActivities(previousIntent))) { |
| if (DEBUG) Log.i(TAG, "Same host, no new resolvers"); |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * For security reasons, we disable all intent:// URLs to Instant Apps that are not coming from |
| * SERP. |
| */ |
| private boolean preventDirectInstantAppsIntent( |
| boolean isDirectInstantAppsIntent, boolean shouldProxyForInstantApps) { |
| if (!isDirectInstantAppsIntent || shouldProxyForInstantApps) return false; |
| if (DEBUG) Log.i(TAG, "Intent URL to an Instant App"); |
| RecordHistogram.recordEnumeratedHistogram("Android.InstantApps.DirectInstantAppsIntent", |
| AiaIntent.OTHER, AiaIntent.NUM_ENTRIES); |
| return true; |
| } |
| |
| /** |
| * Prepare the intent to be sent. This function does not change the filtering for the intent, |
| * so the list if resolveInfos for the intent will be the same before and after this function. |
| */ |
| private void prepareExternalIntent(Intent targetIntent, ExternalNavigationParams params, |
| List<ResolveInfo> resolvingInfos, boolean shouldProxyForInstantApps) { |
| // Set the Browser application ID to us in case the user chooses Chrome |
| // as the app. This will make sure the link is opened in the same tab |
| // instead of making a new one. |
| targetIntent.putExtra(Browser.EXTRA_APPLICATION_ID, |
| ContextUtils.getApplicationContext().getPackageName()); |
| if (params.isOpenInNewTab()) targetIntent.putExtra(Browser.EXTRA_CREATE_NEW_TAB, true); |
| targetIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); |
| // Ensure intents re-target potential caller activity when we run in CCT mode. |
| targetIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); |
| mDelegate.maybeSetWindowId(targetIntent); |
| mDelegate.maybeRecordAppHandlersInIntent(targetIntent, resolvingInfos); |
| |
| if (params.getReferrerUrl() != null) { |
| IntentHandler.setPendingReferrer(targetIntent, params.getReferrerUrl()); |
| } |
| |
| if (params.isIncognito()) IntentHandler.setPendingIncognitoUrl(targetIntent); |
| |
| if (shouldProxyForInstantApps) { |
| RecordHistogram.recordEnumeratedHistogram("Android.InstantApps.DirectInstantAppsIntent", |
| AiaIntent.SERP, AiaIntent.NUM_ENTRIES); |
| targetIntent.putExtra(InstantAppsHandler.IS_GOOGLE_SEARCH_REFERRER, true); |
| } else { |
| // Make sure this extra is not sent unless we've done the verification. |
| targetIntent.removeExtra(InstantAppsHandler.IS_GOOGLE_SEARCH_REFERRER); |
| } |
| |
| // The intent can be used to launch Chrome itself, record the user |
| // gesture here so that it can be used later. |
| if (params.hasUserGesture()) { |
| IntentWithGesturesHandler.getInstance().onNewIntentWithGesture(targetIntent); |
| } |
| } |
| |
| private @OverrideUrlLoadingResult int handleExternalIncognitoIntent(Intent targetIntent, |
| ExternalNavigationParams params, String browserFallbackUrl, |
| boolean shouldProxyForInstantApps) { |
| // This intent may leave Chrome. Warn the user that incognito does not carry over |
| // to apps out side of Chrome. |
| if (mDelegate.startIncognitoIntent(targetIntent, params.getReferrerUrl(), |
| browserFallbackUrl, params.getTab(), |
| params.shouldCloseContentsOnOverrideUrlLoadingAndLaunchIntent(), |
| shouldProxyForInstantApps)) { |
| if (DEBUG) Log.i(TAG, "Incognito navigation out"); |
| return OverrideUrlLoadingResult.OVERRIDE_WITH_ASYNC_ACTION; |
| } |
| if (DEBUG) Log.i(TAG, "Failed to show incognito alert dialog."); |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } |
| |
| /** |
| * If some third-party app launched Chrome with an intent, and the URL got redirected, and the |
| * user explicitly chose Chrome over other intent handlers, stay in Chrome unless there was a |
| * new intent handler after redirection or Chrome cannot handle it any more. |
| * Custom tabs are an exception to this rule, since at no point, the user sees an intent picker |
| * and "picking Chrome" is handled inside the support library. |
| */ |
| private boolean shouldKeepIntentRedirectInChrome(ExternalNavigationParams params, |
| boolean incomingIntentRedirect, Intent targetIntent, boolean isExternalProtocol) { |
| if (params.getRedirectHandler() != null && incomingIntentRedirect && !isExternalProtocol |
| && !params.getRedirectHandler().isFromCustomTabIntent() |
| && !params.getRedirectHandler().hasNewResolver(targetIntent)) { |
| if (DEBUG) Log.i(TAG, "Custom tab redirect no handled"); |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Returns whether the activity belongs to a WebAPK and the URL is within the scope of the |
| * WebAPK. The WebAPK's main activity is a bouncer that redirects to WebApkActivity in Chrome. |
| * In order to avoid bouncing indefinitely, we should not override the navigation if we are |
| * currently showing the WebAPK (params#nativeClientPackageName()) that we will redirect to. |
| */ |
| private boolean isAlreadyInTargetWebApk( |
| List<ResolveInfo> resolveInfos, ExternalNavigationParams params) { |
| String currentName = params.nativeClientPackageName(); |
| if (currentName == null) return false; |
| for (ResolveInfo resolveInfo : resolveInfos) { |
| ActivityInfo info = resolveInfo.activityInfo; |
| if (info != null && currentName.equals(info.packageName)) { |
| if (DEBUG) Log.i(TAG, "Already in WebAPK"); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private boolean launchExternalIntent(Intent targetIntent, boolean shouldProxyForInstantApps) { |
| try { |
| if (!mDelegate.startActivityIfNeeded(targetIntent, shouldProxyForInstantApps)) { |
| if (DEBUG) Log.i(TAG, "The current Activity was the only targeted Activity."); |
| return false; |
| } |
| } catch (ActivityNotFoundException e) { |
| // The targeted app must have been uninstalled/disabled since we queried for Activities |
| // to handle this intent. |
| if (DEBUG) Log.i(TAG, "Activity not found."); |
| return false; |
| } |
| if (DEBUG) Log.i(TAG, "startActivityIfNeeded"); |
| return true; |
| } |
| |
| private @OverrideUrlLoadingResult int shouldOverrideUrlLoadingInternal( |
| ExternalNavigationParams params, Intent targetIntent, |
| @Nullable String browserFallbackUrl) { |
| sanitizeQueryIntentActivitiesIntent(targetIntent); |
| |
| if (blockExternalNavWhileBackgrounded(params) || blockExternalNavFromBackgroundTab(params) |
| || ignoreBackForwardNav(params)) { |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } |
| |
| boolean isExternalProtocol = !UrlUtilities.isAcceptedScheme(params.getUrl()); |
| |
| if (isInternalPdfDownload(isExternalProtocol, params)) { |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } |
| |
| // This check should happen for reloads, navigations, etc..., which is why |
| // it occurs before the subsequent blocks. |
| if (startFileIntentIfNecessary(params, targetIntent)) { |
| return OverrideUrlLoadingResult.OVERRIDE_WITH_ASYNC_ACTION; |
| } |
| |
| // This should come after file intents, but before any returns of |
| // OVERRIDE_WITH_EXTERNAL_INTENT. |
| if (externalIntentRequestsDisabled()) return OverrideUrlLoadingResult.NO_OVERRIDE; |
| |
| int pageTransitionCore = params.getPageTransition() & PageTransition.CORE_MASK; |
| boolean isLink = pageTransitionCore == PageTransition.LINK; |
| boolean isFormSubmit = pageTransitionCore == PageTransition.FORM_SUBMIT; |
| boolean isFromIntent = (params.getPageTransition() & PageTransition.FROM_API) != 0; |
| boolean linkNotFromIntent = isLink && !isFromIntent; |
| |
| boolean isOnEffectiveIntentRedirect = params.getRedirectHandler() == null |
| ? false |
| : params.getRedirectHandler().isOnEffectiveIntentRedirectChain(); |
| |
| // http://crbug.com/170925: We need to show the intent picker when we receive an intent from |
| // another app that 30x redirects to a YouTube/Google Maps/Play Store/Google+ URL etc. |
| boolean incomingIntentRedirect = |
| (isLink && isFromIntent && params.isRedirect()) || isOnEffectiveIntentRedirect; |
| |
| if (handleCCTRedirectsToInstantApps(params, isExternalProtocol, incomingIntentRedirect)) { |
| return OverrideUrlLoadingResult.OVERRIDE_WITH_EXTERNAL_INTENT; |
| } else if (redirectShouldStayInChrome(params, isExternalProtocol, targetIntent)) { |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } |
| |
| if (!preferToShowIntentPicker(params, pageTransitionCore, isExternalProtocol, isFormSubmit, |
| linkNotFromIntent, incomingIntentRedirect)) { |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } |
| |
| if (isLinkFromChromeInternalPage(params)) return OverrideUrlLoadingResult.NO_OVERRIDE; |
| |
| if (handleWtaiMcProtocol(params)) { |
| return OverrideUrlLoadingResult.OVERRIDE_WITH_EXTERNAL_INTENT; |
| } |
| // TODO: handle other WTAI schemes. |
| if (isUnhandledWtaiProtocol(params)) return OverrideUrlLoadingResult.NO_OVERRIDE; |
| |
| if (hasInternalScheme(params)) return OverrideUrlLoadingResult.NO_OVERRIDE; |
| |
| if (hasContentScheme(params)) return OverrideUrlLoadingResult.NO_OVERRIDE; |
| |
| if (isYoutubePairingCode(params)) return OverrideUrlLoadingResult.NO_OVERRIDE; |
| |
| if (shouldStayInWebapp(params)) return OverrideUrlLoadingResult.NO_OVERRIDE; |
| |
| if (shouldStayInIncognito(params, isExternalProtocol)) { |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } |
| |
| if (!maybeSetSmsPackage(targetIntent)) maybeRecordPhoneIntentMetrics(targetIntent); |
| |
| Intent debugIntent = new Intent(targetIntent); |
| List<ResolveInfo> resolvingInfos = mDelegate.queryIntentActivities(targetIntent); |
| if (resolvingInfos.isEmpty()) { |
| return handleUnresolvableIntent(params, targetIntent, browserFallbackUrl); |
| } |
| |
| if (browserFallbackUrl != null) targetIntent.removeExtra(EXTRA_BROWSER_FALLBACK_URL); |
| |
| boolean hasSpecializedHandler = mDelegate.countSpecializedHandlers(resolvingInfos) > 0; |
| if (!isExternalProtocol && !hasSpecializedHandler) { |
| if (fallBackToHandlingWithInstantApp( |
| params, incomingIntentRedirect, linkNotFromIntent)) { |
| return OverrideUrlLoadingResult.OVERRIDE_WITH_EXTERNAL_INTENT; |
| } |
| return fallBackToHandlingInChrome(); |
| } |
| |
| // From this point on we should only have intents Chrome can't handle, or intents for apps |
| // with specialized handlers. |
| |
| if (shouldStayWithinHost( |
| params, isLink, isFormSubmit, resolvingInfos, isExternalProtocol)) { |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } |
| |
| boolean isDirectInstantAppsIntent = |
| isExternalProtocol && InstantAppsHandler.isIntentToInstantApp(targetIntent); |
| boolean shouldProxyForInstantApps = isDirectInstantAppsIntent && mDelegate.isSerpReferrer(); |
| if (preventDirectInstantAppsIntent(isDirectInstantAppsIntent, shouldProxyForInstantApps)) { |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } |
| |
| prepareExternalIntent(targetIntent, params, resolvingInfos, shouldProxyForInstantApps); |
| // As long as our intent resolution hasn't changed, resolvingInfos won't need to be |
| // re-computed as it won't have changed. |
| assert intentResolutionMatches(debugIntent, targetIntent); |
| |
| if (params.isIncognito() && !mDelegate.willChromeHandleIntent(targetIntent)) { |
| return handleExternalIncognitoIntent( |
| targetIntent, params, browserFallbackUrl, shouldProxyForInstantApps); |
| } |
| |
| if (shouldKeepIntentRedirectInChrome( |
| params, incomingIntentRedirect, targetIntent, isExternalProtocol)) { |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } |
| |
| if (shouldStayInWebApkCCT(params, resolvingInfos)) { |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } |
| if (isAlreadyInTargetWebApk(resolvingInfos, params)) { |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } else if (launchWebApkIfSoleIntentHandler(resolvingInfos, targetIntent)) { |
| return OverrideUrlLoadingResult.OVERRIDE_WITH_EXTERNAL_INTENT; |
| } |
| if (launchExternalIntent(targetIntent, shouldProxyForInstantApps)) { |
| return OverrideUrlLoadingResult.OVERRIDE_WITH_EXTERNAL_INTENT; |
| } |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } |
| |
| /** |
| * Sanitize intent to be passed to {@link ExternalNavigationDelegate#queryIntentActivities()} |
| * ensuring that web pages cannot bypass browser security. |
| */ |
| private void sanitizeQueryIntentActivitiesIntent(Intent intent) { |
| intent.addCategory(Intent.CATEGORY_BROWSABLE); |
| intent.setComponent(null); |
| Intent selector = intent.getSelector(); |
| if (selector != null) { |
| selector.addCategory(Intent.CATEGORY_BROWSABLE); |
| selector.setComponent(null); |
| } |
| } |
| |
| /** |
| * @return OVERRIDE_WITH_EXTERNAL_INTENT when we successfully started market activity, |
| * NO_OVERRIDE otherwise. |
| */ |
| private @OverrideUrlLoadingResult int sendIntentToMarket( |
| String packageName, String marketReferrer, ExternalNavigationParams params) { |
| Uri marketUri = |
| new Uri.Builder() |
| .scheme("market") |
| .authority("details") |
| .appendQueryParameter(PLAY_PACKAGE_PARAM, packageName) |
| .appendQueryParameter(PLAY_REFERRER_PARAM, Uri.decode(marketReferrer)) |
| .build(); |
| Intent intent = new Intent(Intent.ACTION_VIEW, marketUri); |
| intent.addCategory(Intent.CATEGORY_BROWSABLE); |
| intent.setPackage("com.android.vending"); |
| intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); |
| if (params.getReferrerUrl() != null) { |
| intent.putExtra(Intent.EXTRA_REFERRER, Uri.parse(params.getReferrerUrl())); |
| } |
| |
| if (!deviceCanHandleIntent(intent)) { |
| // Exit early if the Play Store isn't available. (https://crbug.com/820709) |
| if (DEBUG) Log.i(TAG, "Play Store not installed."); |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } |
| |
| if (params.isIncognito()) { |
| if (!mDelegate.startIncognitoIntent(intent, params.getReferrerUrl(), null, |
| params.getTab(), |
| params.shouldCloseContentsOnOverrideUrlLoadingAndLaunchIntent(), false)) { |
| if (DEBUG) Log.i(TAG, "Failed to show incognito alert dialog."); |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } |
| if (DEBUG) Log.i(TAG, "Incognito intent to Play Store."); |
| return OverrideUrlLoadingResult.OVERRIDE_WITH_ASYNC_ACTION; |
| } else { |
| mDelegate.startActivity(intent, false); |
| if (DEBUG) Log.i(TAG, "Intent to Play Store."); |
| return OverrideUrlLoadingResult.OVERRIDE_WITH_EXTERNAL_INTENT; |
| } |
| } |
| |
| /** |
| * Clobber the current tab with fallback URL. |
| * |
| * @param browserFallbackUrl The fallback URL. |
| * @param params The external navigation params. |
| * @return {@link OverrideUrlLoadingResult} if the tab was clobbered, or we launched an |
| * intent. |
| */ |
| private @OverrideUrlLoadingResult int clobberCurrentTabWithFallbackUrl( |
| String browserFallbackUrl, ExternalNavigationParams params) { |
| // If the fallback URL is a link to Play Store, send the user to Play Store app |
| // instead: crbug.com/638672. |
| Pair<String, String> appInfo = maybeGetPlayStoreAppIdAndReferrer(browserFallbackUrl); |
| if (appInfo != null) { |
| String marketReferrer = TextUtils.isEmpty(appInfo.second) |
| ? ContextUtils.getApplicationContext().getPackageName() : appInfo.second; |
| return sendIntentToMarket(appInfo.first, marketReferrer, params); |
| } |
| |
| // For subframes, we don't support fallback url for now. |
| // http://crbug.com/364522. |
| if (!params.isMainFrame()) { |
| if (DEBUG) Log.i(TAG, "Don't support fallback url in subframes"); |
| return OverrideUrlLoadingResult.NO_OVERRIDE; |
| } |
| |
| // NOTE: any further redirection from fall-back URL should not override URL loading. |
| // Otherwise, it can be used in chain for fingerprinting multiple app installation |
| // status in one shot. In order to prevent this scenario, we notify redirection |
| // handler that redirection from the current navigation should stay in Chrome. |
| if (params.getRedirectHandler() != null) { |
| params.getRedirectHandler().setShouldNotOverrideUrlLoadingUntilNewUrlLoading(); |
| } |
| if (DEBUG) Log.i(TAG, "clobberCurrentTab called"); |
| return mDelegate.clobberCurrentTab(browserFallbackUrl, params.getReferrerUrl()); |
| } |
| |
| /** |
| * If the given URL is to Google Play, extracts the package name and referrer tracking code |
| * from the {@param url} and returns as a Pair in that order. Otherwise returns null. |
| */ |
| private Pair<String, String> maybeGetPlayStoreAppIdAndReferrer(String url) { |
| Uri uri = Uri.parse(url); |
| if (PLAY_HOSTNAME.equals(uri.getHost()) && uri.getPath() != null |
| && uri.getPath().startsWith(PLAY_APP_PATH) |
| && !TextUtils.isEmpty(uri.getQueryParameter(PLAY_PACKAGE_PARAM))) { |
| return new Pair<String, String>(uri.getQueryParameter(PLAY_PACKAGE_PARAM), |
| uri.getQueryParameter(PLAY_REFERRER_PARAM)); |
| } |
| return null; |
| } |
| |
| /** |
| * @return Whether the |url| could be handled by an external application on the system. |
| */ |
| public boolean canExternalAppHandleUrl(String url) { |
| if (url.startsWith(WTAI_MC_URL_PREFIX)) return true; |
| Intent intent; |
| try { |
| intent = Intent.parseUri(url, Intent.URI_INTENT_SCHEME); |
| } catch (URISyntaxException ex) { |
| // Ignore the error. |
| Log.w(TAG, "Bad URI %s", url, ex); |
| return false; |
| } |
| if (intent.getPackage() != null) return true; |
| |
| List<ResolveInfo> resolvingInfos = mDelegate.queryIntentActivities(intent); |
| return resolvingInfos != null && !resolvingInfos.isEmpty(); |
| } |
| |
| /** |
| * Dispatch SMS intents to the default SMS application if applicable. |
| * Most SMS apps refuse to send SMS if not set as default SMS application. |
| * |
| * @param resolvingComponentNames The list of ComponentName that resolves the current intent. |
| */ |
| private String getDefaultSmsPackageName(List<ResolveInfo> resolvingComponentNames) { |
| String defaultSmsPackageName = mDelegate.getDefaultSmsPackageName(); |
| if (defaultSmsPackageName == null) return null; |
| // Makes sure that the default SMS app actually resolves the intent. |
| for (ResolveInfo resolveInfo : resolvingComponentNames) { |
| if (defaultSmsPackageName.equals(resolveInfo.activityInfo.packageName)) { |
| return defaultSmsPackageName; |
| } |
| } |
| return null; |
| } |
| |
| // Returns whether a navigation in a CustomTabActivity opened from a WebAPK should stay |
| // within the CustomTabActivity. Returns false if the navigation does not occur within a |
| // CustomTabActivity or the CustomTabActivity was not opened from a WebAPK/TWA. |
| private boolean shouldStayInWebApkCCT( |
| ExternalNavigationParams params, List<ResolveInfo> handlers) { |
| Tab tab = params.getTab(); |
| if (tab == null || !tab.isCurrentlyACustomTab() || tab.getActivity() == null) { |
| return false; |
| } |
| |
| int launchSource = IntentUtils.safeGetIntExtra( |
| tab.getActivity().getIntent(), EXTRA_BROWSER_LAUNCH_SOURCE, LaunchSourceType.OTHER); |
| if (launchSource != LaunchSourceType.WEBAPK) { |
| return false; |
| } |
| |
| String appId = IntentUtils.safeGetStringExtra( |
| tab.getActivity().getIntent(), Browser.EXTRA_APPLICATION_ID); |
| if (appId == null) return false; |
| |
| boolean webApkHasSpecializedHandler = |
| ExternalNavigationDelegateImpl.getSpecializedHandlersWithFilter(handlers, appId) |
| .isEmpty(); |
| if (webApkHasSpecializedHandler) return false; |
| if (DEBUG) Log.i(TAG, "Staying in WebApk CCT."); |
| return true; |
| } |
| |
| /** |
| * Launches WebAPK if the WebAPK is the sole non-browser handler for the given intent. |
| * @return Whether a WebAPK was launched. |
| */ |
| private boolean launchWebApkIfSoleIntentHandler( |
| List<ResolveInfo> resolvingInfos, Intent targetIntent) { |
| ArrayList<String> packages = |
| ExternalNavigationDelegateImpl.getSpecializedHandlersWithFilter( |
| resolvingInfos, null); |
| if (packages.size() != 1 || !mDelegate.isValidWebApk(packages.get(0))) return false; |
| Intent webApkIntent = new Intent(targetIntent); |
| webApkIntent.setPackage(packages.get(0)); |
| try { |
| mDelegate.startActivity(webApkIntent, false); |
| if (DEBUG) Log.i(TAG, "Launched WebAPK"); |
| return true; |
| } catch (ActivityNotFoundException e) { |
| // The WebApk must have been uninstalled/disabled since we queried for Activities to |
| // handle this intent. |
| if (DEBUG) Log.i(TAG, "WebAPK launch failed"); |
| return false; |
| } |
| } |
| |
| /** |
| * Returns whether or not there's an activity available to handle the intent. |
| */ |
| private boolean deviceCanHandleIntent(Intent intent) { |
| List<ResolveInfo> resolveInfos = mDelegate.queryIntentActivities(intent); |
| return resolveInfos != null && !resolveInfos.isEmpty(); |
| } |
| |
| private static boolean intentResolutionMatches(Intent intent, Intent other) { |
| return intent.filterEquals(other) |
| && (intent.getSelector() == other.getSelector() |
| || intent.getSelector().filterEquals(other.getSelector())); |
| } |
| } |
