Merge pull request #1128 from gree/feature/intent-url

introduced support for intent:/android-app: url.
gree · Jan 5, 2025 · f6fde98 · f6fde98
2 parents 3aa60f0 + 9c9d917
commit f6fde98
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diff --git a/plugins/Android/webview-nofragment/src/main/java/net/gree/unitywebview/CWebViewPlugin.java b/plugins/Android/webview-nofragment/src/main/java/net/gree/unitywebview/CWebViewPlugin.java
@@ -59,6 +59,7 @@
 import android.webkit.PermissionRequest;
 
 import java.net.HttpURLConnection;
+import java.net.URISyntaxException;
 import java.net.URL;
 import java.net.URLEncoder;
 import java.util.ArrayDeque;
@@ -125,6 +126,29 @@ public class CWebViewPlugin {
     private String mBasicAuthUserName;
     private String mBasicAuthPassword;
 
+    // cf. https://chromium.googlesource.com/chromium/src/+/3e5a94daf32200d65dea6072dd4d1b9a2025508b/components/external_intents/android/java/src/org/chromium/components/external_intents/ExternalNavigationHandler.java#121
+    private static final int ALLOWED_INTENT_FLAGS
+        = Intent.FLAG_EXCLUDE_STOPPED_PACKAGES
+        | Intent.FLAG_ACTIVITY_CLEAR_TOP
+        | Intent.FLAG_ACTIVITY_SINGLE_TOP
+        | Intent.FLAG_ACTIVITY_MATCH_EXTERNAL
+        | Intent.FLAG_ACTIVITY_NEW_TASK
+        | Intent.FLAG_ACTIVITY_MULTIPLE_TASK
+        | Intent.FLAG_ACTIVITY_NEW_DOCUMENT
+        | Intent.FLAG_ACTIVITY_RETAIN_IN_RECENTS
+        | Intent.FLAG_ACTIVITY_LAUNCH_ADJACENT;
+
+    // cf. https://chromium.googlesource.com/chromium/src/+/3e5a94daf32200d65dea6072dd4d1b9a2025508b/components/external_intents/android/java/src/org/chromium/components/external_intents/ExternalNavigationHandler.java#1808
+    private static void sanitizeQueryIntentActivitiesIntent(Intent intent) {
+        intent.setFlags(intent.getFlags() & ALLOWED_INTENT_FLAGS);
+        intent.addCategory(Intent.CATEGORY_BROWSABLE);
+        intent.setComponent(null);
+
+        // Intent Selectors allow intents to bypass the intent filter and potentially send apps URIs
+        // they were not expecting to handle. https://crbug.com/1254422
+        intent.setSelector(null);
+    }
+
     // cf. https://github.com/gree/unity-webview/issues/753
     // cf. https://github.com/mixpanel/mixpanel-android/issues/400
     // cf. https://github.com/mixpanel/mixpanel-android/commit/98bb530f9263f3bac0737971acc00dfef7ea4c35
@@ -462,9 +486,19 @@ public boolean shouldOverrideUrlLoading(WebView view, String url) {
                         mWebViewPlugin.call("CallOnStarted", url);
                         // Let webview handle the URL
                         return false;
+                    } else if (url.startsWith("intent://") || url.startsWith("android-app://")) {
+                        try {
+                            Intent intent = Intent.parseUri(url, Intent.URI_INTENT_SCHEME);
+                            // cf. https://www.m3tech.blog/entry/android-webview-intent-scheme
+                            sanitizeQueryIntentActivitiesIntent(intent);
+                            view.getContext().startActivity(intent);
+                        } catch (URISyntaxException ex) {
+                        } catch (ActivityNotFoundException ex) {
+                        }
+                        return true;
                     }
                     Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
-                    PackageManager pm = a.getPackageManager();
+                    // PackageManager pm = a.getPackageManager();
                     // List<ResolveInfo> apps = pm.queryIntentActivities(intent, 0);
                     // if (apps.size() > 0) {
                     //     view.getContext().startActivity(intent);

diff --git a/plugins/Android/webview/src/main/java/net/gree/unitywebview/CWebViewPlugin.java b/plugins/Android/webview/src/main/java/net/gree/unitywebview/CWebViewPlugin.java
@@ -74,6 +74,7 @@
 import java.io.IOException;
 import java.io.OutputStream;
 import java.net.HttpURLConnection;
+import java.net.URISyntaxException;
 import java.net.URL;
 import java.net.URLEncoder;
 import java.text.SimpleDateFormat;
@@ -168,6 +169,29 @@ public class CWebViewPlugin extends Fragment {
     private String mBasicAuthUserName;
     private String mBasicAuthPassword;
 
+    // cf. https://chromium.googlesource.com/chromium/src/+/3e5a94daf32200d65dea6072dd4d1b9a2025508b/components/external_intents/android/java/src/org/chromium/components/external_intents/ExternalNavigationHandler.java#121
+    private static final int ALLOWED_INTENT_FLAGS
+        = Intent.FLAG_EXCLUDE_STOPPED_PACKAGES
+        | Intent.FLAG_ACTIVITY_CLEAR_TOP
+        | Intent.FLAG_ACTIVITY_SINGLE_TOP
+        | Intent.FLAG_ACTIVITY_MATCH_EXTERNAL
+        | Intent.FLAG_ACTIVITY_NEW_TASK
+        | Intent.FLAG_ACTIVITY_MULTIPLE_TASK
+        | Intent.FLAG_ACTIVITY_NEW_DOCUMENT
+        | Intent.FLAG_ACTIVITY_RETAIN_IN_RECENTS
+        | Intent.FLAG_ACTIVITY_LAUNCH_ADJACENT;
+
+    // cf. https://chromium.googlesource.com/chromium/src/+/3e5a94daf32200d65dea6072dd4d1b9a2025508b/components/external_intents/android/java/src/org/chromium/components/external_intents/ExternalNavigationHandler.java#1808
+    private static void sanitizeQueryIntentActivitiesIntent(Intent intent) {
+        intent.setFlags(intent.getFlags() & ALLOWED_INTENT_FLAGS);
+        intent.addCategory(Intent.CATEGORY_BROWSABLE);
+        intent.setComponent(null);
+
+        // Intent Selectors allow intents to bypass the intent filter and potentially send apps URIs
+        // they were not expecting to handle. https://crbug.com/1254422
+        intent.setSelector(null);
+    }
+
     public void SaveDataURL(final String fileName, final String dataURL) {
         if (!dataURL.startsWith("data:")) {
             return;
@@ -716,6 +740,16 @@ public boolean shouldOverrideUrlLoading(WebView view, String url) {
                         mWebViewPlugin.call("CallOnStarted", url);
                         // Let webview handle the URL
                         return false;
+                    } else if (url.startsWith("intent://") || url.startsWith("android-app://")) {
+                        try {
+                            Intent intent = Intent.parseUri(url, Intent.URI_INTENT_SCHEME);
+                            // cf. https://www.m3tech.blog/entry/android-webview-intent-scheme
+                            sanitizeQueryIntentActivitiesIntent(intent);
+                            view.getContext().startActivity(intent);
+                        } catch (URISyntaxException ex) {
+                        } catch (ActivityNotFoundException ex) {
+                        }
+                        return true;
                     }
                     Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
                     // PackageManager pm = a.getPackageManager();