feat(Facebook): Add Hide sponsored stories patch

api/revanced-patches.api

@@ -263,6 +263,12 @@ public final class app/revanced/patches/duolingo/debug/EnableDebugMenuPatch : ap
 	public synthetic fun execute (Lapp/revanced/patcher/data/Context;)V
 }
 
+public final class app/revanced/patches/facebook/ads/mainfeed/HideSponsoredStoriesPatch : app/revanced/patcher/patch/BytecodePatch {
+	public static final field INSTANCE Lapp/revanced/patches/facebook/ads/mainfeed/HideSponsoredStoriesPatch;
+	public fun execute (Lapp/revanced/patcher/data/BytecodeContext;)V
+	public synthetic fun execute (Lapp/revanced/patcher/data/Context;)V
+}
+
 public final class app/revanced/patches/facebook/ads/story/HideStoryAdsPatch : app/revanced/patcher/patch/BytecodePatch {
 	public static final field INSTANCE Lapp/revanced/patches/facebook/ads/story/HideStoryAdsPatch;
 	public fun execute (Lapp/revanced/patcher/data/BytecodeContext;)V

src/main/kotlin/app/revanced/patches/facebook/ads/mainfeed/HideSponsoredStoriesPatch.kt

@@ -0,0 +1,43 @@
+package app.revanced.patches.facebook.ads.mainfeed
+
+import app.revanced.util.exception
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.extensions.InstructionExtensions.addInstructionsWithLabels
+import app.revanced.patcher.patch.BytecodePatch
+import app.revanced.patcher.patch.annotation.CompatiblePackage
+import app.revanced.patcher.patch.annotation.Patch
+import app.revanced.patches.facebook.ads.mainfeed.fingerprints.GetStoryVisibilityFingerprint
+import app.revanced.patches.facebook.ads.mainfeed.fingerprints.GraphQLStorySponsoredDataGetterFingerprint
+import app.revanced.util.resultOrThrow
+
+@Patch(
+    name = "Hide 'Sponsored Stories'",
+    compatiblePackages = [CompatiblePackage("com.facebook.katana")]
+)
+@Suppress("unused")
+object HideSponsoredStoriesPatch : BytecodePatch(
+    setOf(GetStoryVisibilityFingerprint, GraphQLStorySponsoredDataGetterFingerprint)
+) {
+    override fun execute(context: BytecodeContext) {
+        GetStoryVisibilityFingerprint.result?.apply {
+            val sponsoredDataModelGetterMethod = GraphQLStorySponsoredDataGetterFingerprint.resultOrThrow().method
+
+            // Check if the parameter type is GraphQLStory and if sponsoredDataModelGetter returns a non-null value.
+            // If so, hide the story by setting the visibility to StoryVisibility.GONE.
+            mutableMethod.addInstructionsWithLabels(
+                scanResult.patternScanResult!!.startIndex,
+                """
+                    instance-of v0, p0, Lcom/facebook/graphql/model/GraphQLStory;
+                    if-eqz v0, :resume_normal
+                    invoke-virtual {p0}, $sponsoredDataModelGetterMethod
+                    move-result-object v0 
+                    if-eqz v0, :resume_normal
+                    const-string v0, "GONE"
+                    return-object v0
+                    :resume_normal
+                    nop
+                """
+            )
+        } ?: throw GetStoryVisibilityFingerprint.exception
+    }
+}

src/main/kotlin/app/revanced/patches/facebook/ads/mainfeed/fingerprints/GetStoryVisibilityFingerprint.kt

@@ -0,0 +1,23 @@
+package app.revanced.patches.facebook.ads.mainfeed.fingerprints
+
+import app.revanced.patcher.extensions.or
+import app.revanced.patcher.fingerprint.MethodFingerprint
+import com.android.tools.smali.dexlib2.AccessFlags
+import com.android.tools.smali.dexlib2.Opcode
+import com.android.tools.smali.dexlib2.iface.Annotation
+import com.android.tools.smali.dexlib2.iface.value.StringEncodedValue
+
+internal object GetStoryVisibilityFingerprint : MethodFingerprint(
+    returnType = "Ljava/lang/String;",
+    accessFlags = (AccessFlags.PUBLIC or AccessFlags.STATIC),
+    opcodes = listOf(
+        Opcode.INSTANCE_OF,
+        Opcode.IF_NEZ,
+        Opcode.INSTANCE_OF,
+        Opcode.IF_NEZ,
+        Opcode.INSTANCE_OF,
+        Opcode.IF_NEZ,
+        Opcode.CONST
+    ),
+    strings = listOf("This should not be called for base class object"),
+)

src/main/kotlin/app/revanced/patches/facebook/ads/mainfeed/fingerprints/GraphQLStorySponsoredDataGetterFingerprint.kt

@@ -0,0 +1,29 @@
+package app.revanced.patches.facebook.ads.mainfeed.fingerprints
+
+import app.revanced.patcher.fingerprint.MethodFingerprint
+import app.revanced.patches.facebook.ads.mainfeed.fingerprints.GraphQLStorySponsoredDataGetterFingerprint.SPONSORED_DATA_TYPE_ID
+import app.revanced.patches.facebook.ads.mainfeed.fingerprints.GraphQLStorySponsoredDataGetterFingerprint.STORY_TYPE_ID
+import com.android.tools.smali.dexlib2.iface.MethodImplementation
+import com.android.tools.smali.dexlib2.iface.instruction.formats.Instruction31i
+
+
+internal object GraphQLStorySponsoredDataGetterFingerprint : MethodFingerprint(
+    customFingerprint = { methodDef, classDef ->
+        fun isMatchingLiteralValue(index: Int, literal: Int): Boolean {
+            val instruction = methodDef.implementation?.instructions?.elementAtOrNull(index) as? Instruction31i
+
+            return instruction?.narrowLiteral == literal
+        }
+
+        // All methods within the target class are virtually identical apart from two magic constants on each of them.
+        // They all return an instance of the same model but filled with different GraphQL child node data.
+        // Likely, the constants are the parent and child node ids.
+        classDef.type == "Lcom/facebook/graphql/model/GraphQLStory;" &&
+                isMatchingLiteralValue(1, STORY_TYPE_ID) &&
+                isMatchingLiteralValue(2, SPONSORED_DATA_TYPE_ID)
+    }
+) {
+    // These constants trace back to some GraphQL node type descriptor.
+    private const val STORY_TYPE_ID = -132939024
+    private const val SPONSORED_DATA_TYPE_ID = 341202575
+}