feat(reddit): add sanitize-sharing-links patch (#2192)

Co-authored-by: oSumAtrIX <[email protected]>

src/main/kotlin/app/revanced/patches/reddit/misc/tracking/url/annotations/SanitizeUrlQueryCompatibility.kt

@@ -0,0 +1,8 @@
+package app.revanced.patches.reddit.misc.tracking.url.annotations
+
+import app.revanced.patcher.annotation.Compatibility
+import app.revanced.patcher.annotation.Package
+
+@Compatibility([Package("com.reddit.frontpage", arrayOf("2023.12.0", "2023.17.1"))])
+@Target(AnnotationTarget.CLASS)
+internal annotation class SanitizeUrlQueryCompatibility

src/main/kotlin/app/revanced/patches/reddit/misc/tracking/url/fingerprints/ShareLinkFactoryFingerprint.kt

@@ -0,0 +1,22 @@
+package app.revanced.patches.reddit.misc.tracking.url.fingerprints
+
+import app.revanced.patcher.extensions.or
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import org.jf.dexlib2.AccessFlags
+import org.jf.dexlib2.Opcode
+
+object ShareLinkFactoryFingerprint : MethodFingerprint(
+    returnType = "L",
+    access = AccessFlags.PUBLIC or AccessFlags.FINAL,
+    opcodes = listOf(
+        Opcode.CONST_STRING,
+        Opcode.CONST_STRING,
+        Opcode.INVOKE_DIRECT,
+        Opcode.APUT_OBJECT,
+        Opcode.INVOKE_STATIC,
+        Opcode.MOVE_RESULT_OBJECT,
+        Opcode.INVOKE_STATIC, // Returns the URL.
+        Opcode.MOVE_RESULT_OBJECT
+    ),
+    customFingerprint = { methodDef, _ -> methodDef.definingClass.endsWith("ShareLinkFactory;") }
+)

src/main/kotlin/app/revanced/patches/reddit/misc/tracking/url/patch/SanitizeUrlQueryPatch.kt

@@ -0,0 +1,52 @@
+package app.revanced.patches.reddit.misc.tracking.url.patch
+
+import app.revanced.extensions.toErrorResult
+import app.revanced.patcher.annotation.Description
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.extensions.addInstructions
+import app.revanced.patcher.extensions.instruction
+import app.revanced.patcher.patch.BytecodePatch
+import app.revanced.patcher.patch.PatchResult
+import app.revanced.patcher.patch.PatchResultSuccess
+import app.revanced.patcher.patch.annotations.Patch
+import app.revanced.patcher.patch.annotations.RequiresIntegrations
+import app.revanced.patches.reddit.misc.tracking.url.annotations.SanitizeUrlQueryCompatibility
+import app.revanced.patches.reddit.misc.tracking.url.fingerprints.ShareLinkFactoryFingerprint
+import org.jf.dexlib2.iface.instruction.OneRegisterInstruction
+
+@Patch
+@Name("sanitize-sharing-links")
+@Description("Removes (tracking) query parameters from the URLs when sharing links.")
+@SanitizeUrlQueryCompatibility
+@Version("0.0.1")
+@RequiresIntegrations
+class SanitizeUrlQueryPatch : BytecodePatch(
+    listOf(ShareLinkFactoryFingerprint)
+) {
+    override fun execute(context: BytecodeContext): PatchResult {
+        ShareLinkFactoryFingerprint.result?.let { result ->
+            result.mutableMethod.apply {
+                val insertIndex = result.scanResult.patternScanResult!!.endIndex + 1
+                val urlRegister = instruction<OneRegisterInstruction>(insertIndex - 1).registerA
+
+                addInstructions(
+                    insertIndex,
+                    """
+                        invoke-static {v$urlRegister}, $SANITIZE_METHOD_DESCRIPTOR
+                        move-result-object v$urlRegister
+                   """
+                )
+            }
+        } ?: return ShareLinkFactoryFingerprint.toErrorResult()
+
+        return PatchResultSuccess()
+    }
+
+    private companion object {
+        private const val SANITIZE_METHOD_DESCRIPTOR =
+            "Lapp/revanced/reddit/patches/SanitizeUrlQueryPatch;" +
+                    "->stripQueryParameters(Ljava/lang/String;)Ljava/lang/String;"
+    }
+}