From ae758f99d6af81123bb6b74d307d798c2c17acf3 Mon Sep 17 00:00:00 2001
From: Romain Vimont <rom@rom1v.com>
Date: Sun, 13 Sep 2020 21:35:11 +0200
Subject: [PATCH] Adapt call() on ContentProvider for Android 11

This commit in AOSP framework_base added a parameter "attributionTag" to
the call() method:
https://android.googlesource.com/platform/frameworks/base.git/+/12ac3f406fed87cb9cd3a28b9947e7202a2d14bd%5E%21/#F17

As a consequence, the method did not exist, so scrcpy used the legacy
call() method (using the authority "unknown") as a fallback, which fails
for security reasons.

Fixes #1468 <https://github.com/Genymobile/scrcpy/issues/1468>
---
 .../scrcpy/wrappers/ContentProvider.java      | 32 +++++++++++++------
 1 file changed, 23 insertions(+), 9 deletions(-)

diff --git a/server/src/main/java/com/genymobile/scrcpy/wrappers/ContentProvider.java b/server/src/main/java/com/genymobile/scrcpy/wrappers/ContentProvider.java
index b43494c7..f8393e59 100644
--- a/server/src/main/java/com/genymobile/scrcpy/wrappers/ContentProvider.java
+++ b/server/src/main/java/com/genymobile/scrcpy/wrappers/ContentProvider.java
@@ -35,7 +35,7 @@ public class ContentProvider implements Closeable {
     private final IBinder token;
 
     private Method callMethod;
-    private boolean callMethodLegacy;
+    private int callMethodVersion;
 
     ContentProvider(ActivityManager manager, Object provider, String name, IBinder token) {
         this.manager = manager;
@@ -46,12 +46,20 @@ public class ContentProvider implements Closeable {
 
     private Method getCallMethod() throws NoSuchMethodException {
         if (callMethod == null) {
+
             try {
-                callMethod = provider.getClass().getMethod("call", String.class, String.class, String.class, String.class, Bundle.class);
+                callMethod = provider.getClass()
+                        .getMethod("call", String.class, String.class, String.class, String.class, String.class, Bundle.class);
+                callMethodVersion = 0;
             } catch (NoSuchMethodException e) {
-                // old version
-                callMethod = provider.getClass().getMethod("call", String.class, String.class, String.class, Bundle.class);
-                callMethodLegacy = true;
+                // old versions
+                try {
+                    callMethod = provider.getClass().getMethod("call", String.class, String.class, String.class, String.class, Bundle.class);
+                    callMethodVersion = 1;
+                } catch (NoSuchMethodException e2) {
+                    callMethod = provider.getClass().getMethod("call", String.class, String.class, String.class, Bundle.class);
+                    callMethodVersion = 2;
+                }
             }
         }
         return callMethod;
@@ -61,10 +69,16 @@ public class ContentProvider implements Closeable {
         try {
             Method method = getCallMethod();
             Object[] args;
-            if (!callMethodLegacy) {
-                args = new Object[]{ServiceManager.PACKAGE_NAME, "settings", callMethod, arg, extras};
-            } else {
-                args = new Object[]{ServiceManager.PACKAGE_NAME, callMethod, arg, extras};
+            switch (callMethodVersion) {
+                case 0:
+                    args = new Object[]{ServiceManager.PACKAGE_NAME, null, "settings", callMethod, arg, extras};
+                    break;
+                case 1:
+                    args = new Object[]{ServiceManager.PACKAGE_NAME, "settings", callMethod, arg, extras};
+                    break;
+                default:
+                    args = new Object[]{ServiceManager.PACKAGE_NAME, callMethod, arg, extras};
+                    break;
             }
             return (Bundle) method.invoke(provider, args);
         } catch (InvocationTargetException | IllegalAccessException | NoSuchMethodException e) {