[1/?] Support android.content for Ravenwood.

Initial pass at foundational classes under android.content, along
with CTS to verify consistency.

Methods that interface to broader parts of OS remain marked as
"throw" for the moment, such as cross-process work and StrictMode.

Bug: 292141694
Test: atest-dev CtsOsTestCasesRavenwood CtsOsTestCases
Test: atest-dev CtsContentTestCasesRavenwood CtsContentTestCases
Change-Id: Ic3deafb1f4058fcc104882a3508728994669f7d2

12 files changed, 54 insertions, 1 deletions

diff --git a/Ravenwood.bp b/Ravenwood.bp
index 2f6709090093..b497871aee85 100644
--- a/Ravenwood.bp
+++ b/Ravenwood.bp
@@ -82,6 +82,7 @@ android_ravenwood_libgroup {
         "junit",
         "truth",
         "ravenwood-junit",
+        "android.test.mock",
     ],
 }
 
diff --git a/core/java/android/content/ClipData.java b/core/java/android/content/ClipData.java
index 0bc459a19e7d..67759f4aa76d 100644
--- a/core/java/android/content/ClipData.java
+++ b/core/java/android/content/ClipData.java
@@ -163,6 +163,7 @@ import java.util.List;
  * into an editor), then {@link Item#coerceToText(Context)} will ask the content
  * provider for the clip URI as text and successfully paste the entire note.
  */
+@android.ravenwood.annotation.RavenwoodKeepWholeClass
 public class ClipData implements Parcelable {
     static final String[] MIMETYPES_TEXT_PLAIN = new String[] {
         ClipDescription.MIMETYPE_TEXT_PLAIN };
@@ -387,6 +388,7 @@ public class ClipData implements Parcelable {
          * @return Returns the item's textual representation.
          */
 //BEGIN_INCLUDE(coerceToText)
+        @android.ravenwood.annotation.RavenwoodThrow
         public CharSequence coerceToText(Context context) {
             // If this Item has an explicit textual value, simply return that.
             CharSequence text = getText();
@@ -470,6 +472,7 @@ public class ClipData implements Parcelable {
          * and other things can be retrieved.
          * @return Returns the item's textual representation.
          */
+        @android.ravenwood.annotation.RavenwoodThrow
         public CharSequence coerceToStyledText(Context context) {
             CharSequence text = getText();
             if (text instanceof Spanned) {
@@ -520,6 +523,7 @@ public class ClipData implements Parcelable {
          * and other things can be retrieved.
          * @return Returns the item's representation as HTML text.
          */
+        @android.ravenwood.annotation.RavenwoodThrow
         public String coerceToHtmlText(Context context) {
             // If the item has an explicit HTML value, simply return that.
             String htmlText = getHtmlText();
@@ -540,6 +544,7 @@ public class ClipData implements Parcelable {
             return text != null ? text.toString() : null;
         }
 
+        @android.ravenwood.annotation.RavenwoodThrow
         private CharSequence coerceToHtmlOrStyledText(Context context, boolean styled) {
             // If this Item has a URI value, try using that.
             if (mUri != null) {
@@ -1030,6 +1035,7 @@ public class ClipData implements Parcelable {
      *
      * @hide
      */
+    @android.ravenwood.annotation.RavenwoodThrow
     public void prepareToLeaveProcess(boolean leavingPackage) {
         // Assume that callers are going to be granting permissions
         prepareToLeaveProcess(leavingPackage, Intent.FLAG_GRANT_READ_URI_PERMISSION);
@@ -1040,6 +1046,7 @@ public class ClipData implements Parcelable {
      *
      * @hide
      */
+    @android.ravenwood.annotation.RavenwoodThrow
     public void prepareToLeaveProcess(boolean leavingPackage, int intentFlags) {
         final int size = mItems.size();
         for (int i = 0; i < size; i++) {
@@ -1060,6 +1067,7 @@ public class ClipData implements Parcelable {
     }
 
     /** {@hide} */
+    @android.ravenwood.annotation.RavenwoodThrow
     public void prepareToEnterProcess(AttributionSource source) {
         final int size = mItems.size();
         for (int i = 0; i < size; i++) {
@@ -1073,6 +1081,7 @@ public class ClipData implements Parcelable {
     }
 
     /** @hide */
+    @android.ravenwood.annotation.RavenwoodThrow
     public void fixUris(int contentUserHint) {
         final int size = mItems.size();
         for (int i = 0; i < size; i++) {
@@ -1090,6 +1099,7 @@ public class ClipData implements Parcelable {
      * Only fixing the data field of the intents
      * @hide
      */
+    @android.ravenwood.annotation.RavenwoodThrow
     public void fixUrisLight(int contentUserHint) {
         final int size = mItems.size();
         for (int i = 0; i < size; i++) {
diff --git a/core/java/android/content/ClipDescription.java b/core/java/android/content/ClipDescription.java
index de2ba44ca393..5953890ad85f 100644
--- a/core/java/android/content/ClipDescription.java
+++ b/core/java/android/content/ClipDescription.java
@@ -48,6 +48,7 @@ import java.util.Map;
  * developer guide.</p>
  * </div>
  */
+@android.ravenwood.annotation.RavenwoodKeepWholeClass
 public class ClipDescription implements Parcelable {
     /**
      * The MIME type for a clip holding plain text.
diff --git a/core/java/android/content/ComponentName.java b/core/java/android/content/ComponentName.java
index f12e971afb1f..a6a6bccbb4b5 100644
--- a/core/java/android/content/ComponentName.java
+++ b/core/java/android/content/ComponentName.java
@@ -37,6 +37,7 @@ import java.io.PrintWriter;
  * name inside of that package.
  *
  */
+@android.ravenwood.annotation.RavenwoodKeepWholeClass
 public final class ComponentName implements Parcelable, Cloneable, Comparable<ComponentName> {
     private final String mPackage;
     private final String mClass;
diff --git a/core/java/android/content/ContentUris.java b/core/java/android/content/ContentUris.java
index 767d3f668313..093faff654ec 100644
--- a/core/java/android/content/ContentUris.java
+++ b/core/java/android/content/ContentUris.java
@@ -70,6 +70,7 @@ import java.util.List;
 *</dl>
 *
 */
+@android.ravenwood.annotation.RavenwoodKeepWholeClass
 public class ContentUris {
 
     /**
diff --git a/core/java/android/content/ContentValues.java b/core/java/android/content/ContentValues.java
index 02a5ba13f2aa..bde2f3e9a707 100644
--- a/core/java/android/content/ContentValues.java
+++ b/core/java/android/content/ContentValues.java
@@ -35,6 +35,7 @@ import java.util.Set;
  * This class is used to store a set of values that the {@link ContentResolver}
  * can process.
  */
+@android.ravenwood.annotation.RavenwoodKeepWholeClass
 public final class ContentValues implements Parcelable {
     public static final String TAG = "ContentValues";
 
diff --git a/core/java/android/content/Intent.java b/core/java/android/content/Intent.java
index 6b39f266a802..665ba1119550 100644
--- a/core/java/android/content/Intent.java
+++ b/core/java/android/content/Intent.java
@@ -660,6 +660,7 @@ import java.util.TimeZone;
  * {@link #setFlags} and {@link #addFlags}.  See {@link #setFlags} for a list
  * of all possible flags.
  */
+@android.ravenwood.annotation.RavenwoodKeepWholeClass
 public class Intent implements Parcelable, Cloneable {
     private static final String TAG = "Intent";
 
@@ -12180,6 +12181,7 @@ public class Intent implements Parcelable, Cloneable {
      *
      * @hide
      */
+    @android.ravenwood.annotation.RavenwoodThrow
     @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
     public void prepareToLeaveProcess(Context context) {
         final boolean leavingPackage;
@@ -12201,6 +12203,7 @@ public class Intent implements Parcelable, Cloneable {
      *
      * @hide
      */
+    @android.ravenwood.annotation.RavenwoodThrow
     public void prepareToLeaveProcess(boolean leavingPackage) {
         setAllowFds(false);
 
@@ -12296,6 +12299,7 @@ public class Intent implements Parcelable, Cloneable {
     /**
      * @hide
      */
+    @android.ravenwood.annotation.RavenwoodThrow
     public void prepareToEnterProcess(boolean fromProtectedComponent, AttributionSource source) {
         if (fromProtectedComponent) {
             prepareToEnterProcess(LOCAL_FLAG_FROM_PROTECTED_COMPONENT, source);
@@ -12307,6 +12311,7 @@ public class Intent implements Parcelable, Cloneable {
     /**
      * @hide
      */
+    @android.ravenwood.annotation.RavenwoodThrow
     public void prepareToEnterProcess(int localFlags, AttributionSource source) {
         // We just entered destination process, so we should be able to read all
         // parcelables inside.
@@ -12378,6 +12383,7 @@ public class Intent implements Parcelable, Cloneable {
     /**
      * @hide
      */
+    @android.ravenwood.annotation.RavenwoodThrow
      public void fixUris(int contentUserHint) {
         Uri data = getData();
         if (data != null) {
@@ -12417,6 +12423,7 @@ public class Intent implements Parcelable, Cloneable {
      * @return Whether any contents were migrated.
      * @hide
      */
+    @android.ravenwood.annotation.RavenwoodThrow
     public boolean migrateExtraStreamToClipData() {
         return migrateExtraStreamToClipData(AppGlobals.getInitialApplication());
     }
@@ -12430,6 +12437,7 @@ public class Intent implements Parcelable, Cloneable {
      * @return Whether any contents were migrated.
      * @hide
      */
+    @android.ravenwood.annotation.RavenwoodThrow
     public boolean migrateExtraStreamToClipData(Context context) {
         // Refuse to touch if extras already parcelled
         if (mExtras != null && mExtras.isParcelled()) return false;
@@ -12545,6 +12553,7 @@ public class Intent implements Parcelable, Cloneable {
         return false;
     }
 
+    @android.ravenwood.annotation.RavenwoodThrow
     private Uri maybeConvertFileToContentUri(Context context, Uri uri) {
         if (ContentResolver.SCHEME_FILE.equals(uri.getScheme())
                 && context.getApplicationInfo().targetSdkVersion < Build.VERSION_CODES.R) {
@@ -12598,6 +12607,7 @@ public class Intent implements Parcelable, Cloneable {
 
     // TODO(b/299109198): Refactor into the {@link SdkSandboxManagerLocal}
     /** @hide */
+    @android.ravenwood.annotation.RavenwoodThrow
     public boolean isSandboxActivity(@NonNull Context context) {
         if (mAction != null && mAction.equals(ACTION_START_SANDBOXED_ACTIVITY)) {
             return true;
diff --git a/core/java/android/content/IntentFilter.java b/core/java/android/content/IntentFilter.java
index f946754bd9a1..ad3acd713c6b 100644
--- a/core/java/android/content/IntentFilter.java
+++ b/core/java/android/content/IntentFilter.java
@@ -152,6 +152,7 @@ import java.util.function.Predicate;
  * that unlike the action, an IntentFilter with no categories
  * will only match an Intent that does not have any categories.
  */
+@android.ravenwood.annotation.RavenwoodKeepWholeClass
 public class IntentFilter implements Parcelable {
     private static final String TAG = "IntentFilter";
 
diff --git a/core/java/android/content/UriMatcher.java b/core/java/android/content/UriMatcher.java
index 7fa48f0e9a78..4422ade7ec0a 100644
--- a/core/java/android/content/UriMatcher.java
+++ b/core/java/android/content/UriMatcher.java
@@ -119,6 +119,7 @@ instead of:
     }
 </pre>
 */
+@android.ravenwood.annotation.RavenwoodKeepWholeClass
 public class UriMatcher
 {
     public static final int NO_MATCH = -1;
diff --git a/ravenwood/framework-minus-apex-ravenwood-policies.txt b/ravenwood/framework-minus-apex-ravenwood-policies.txt
index 3e54c7a06288..aa2d470d7d9c 100644
--- a/ravenwood/framework-minus-apex-ravenwood-policies.txt
+++ b/ravenwood/framework-minus-apex-ravenwood-policies.txt
@@ -121,3 +121,15 @@ class com.android.modules.utils.FastDataOutput stubclass
 class com.android.modules.utils.ModifiedUtf8 stubclass
 class com.android.modules.utils.TypedXmlPullParser stubclass
 class com.android.modules.utils.TypedXmlSerializer stubclass
+
+# Uri
+class android.net.Uri stubclass
+class android.net.UriCodec stubclass
+
+# Context: just enough to support wrapper, no further functionality
+class android.content.Context stub
+    method <init> ()V stub
+
+# Text
+class android.text.TextUtils stub
+    method isEmpty (Ljava/lang/CharSequence;)Z stub
diff --git a/ravenwood/ravenwood-annotation-allowed-classes.txt b/ravenwood/ravenwood-annotation-allowed-classes.txt
index 1ac6bf0a7c4d..0290bbe64439 100644
--- a/ravenwood/ravenwood-annotation-allowed-classes.txt
+++ b/ravenwood/ravenwood-annotation-allowed-classes.txt
@@ -10,3 +10,13 @@ android.os.IBinder
 android.os.Process
 android.os.SystemClock
 android.os.UserHandle
+
+android.content.ClipData
+android.content.ClipData$Item
+android.content.ClipDescription
+android.content.ComponentName
+android.content.ContentUris
+android.content.ContentValues
+android.content.Intent
+android.content.IntentFilter
+android.content.UriMatcher
diff --git a/tools/hoststubgen/hoststubgen/helper-framework-runtime-src/framework/com/android/hoststubgen/nativesubstitution/Parcel_host.java b/tools/hoststubgen/hoststubgen/helper-framework-runtime-src/framework/com/android/hoststubgen/nativesubstitution/Parcel_host.java
index 12c7841556fc..4a3a79803b65 100644
--- a/tools/hoststubgen/hoststubgen/helper-framework-runtime-src/framework/com/android/hoststubgen/nativesubstitution/Parcel_host.java
+++ b/tools/hoststubgen/hoststubgen/helper-framework-runtime-src/framework/com/android/hoststubgen/nativesubstitution/Parcel_host.java
@@ -286,11 +286,15 @@ public class Parcel_host {
     }
 
     public static byte[] nativeReadBlob(long nativePtr) {
+        var p = getInstance(nativePtr);
+        if (p.mSize - p.mPos < 4) {
+            // Match native impl that returns "null" when not enough data
+            return null;
+        }
         final var size = nativeReadInt(nativePtr);
         if (size == -1) {
             return null;
         }
-        var p = getInstance(nativePtr);
         try {
             p.ensureDataAvailable(align4(size));
         } catch (Exception e) {