feat(reddit): uri-parameter-reddit patch

src/main/kotlin/app/revanced/patches/reddit/misc/uriparameters/annotations/UriParametersCompatibility.kt

@@ -0,0 +1,15 @@
+package app.revanced.patches.reddit.misc.uriparameters.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 UriParametersCompatibility

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

@@ -0,0 +1,22 @@
+package app.revanced.patches.reddit.misc.uriparameters.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, // returnType: Ljava/lang/String;
+        Opcode.MOVE_RESULT_OBJECT
+    ),
+    customFingerprint = { it.definingClass.endsWith("ShareLinkFactory;") }
+)

src/main/kotlin/app/revanced/patches/reddit/misc/uriparameters/patch/UriParametersPatch.kt

@@ -0,0 +1,68 @@
+package app.revanced.patches.reddit.misc.uriparameters.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.PatchResultError
+import app.revanced.patcher.patch.PatchResultSuccess
+import app.revanced.patcher.patch.annotations.Patch
+import app.revanced.patcher.util.proxy.mutableTypes.MutableMethod
+import app.revanced.patches.reddit.misc.uriparameters.annotations.UriParametersCompatibility
+import app.revanced.patches.reddit.misc.uriparameters.fingerprints.ShareLinkFactoryFingerprint
+import org.jf.dexlib2.builder.instruction.BuilderInstruction35c
+import org.jf.dexlib2.iface.instruction.OneRegisterInstruction
+
+@Patch
+@Name("uri-parameter-reddit")
+@Description("Remove uri parameter when sharing links in reddit.")
+@UriParametersCompatibility
+@Version("0.0.1")
+class UriParametersPatch : BytecodePatch(
+    listOf(
+        ShareLinkFactoryFingerprint
+    )
+) {
+    override fun execute(context: BytecodeContext): PatchResult {
+        ShareLinkFactoryFingerprint.result?.let {
+            it.mutableMethod.apply {
+                val startIndex = it.scanResult.patternScanResult!!.startIndex
+                val endIndex = it.scanResult.patternScanResult!!.endIndex
+
+                val parameter = (instruction(endIndex - 1) as BuilderInstruction35c).reference
+
+                if (!parameter.toString().endsWith("Ljava/lang/String;"))
+                    return PatchResultError("Method signature parameter did not match: $parameter")
+
+                val matcherRegister = getRegister(startIndex)
+                val tempRegister = getRegister(startIndex + 1)
+                val uriRegister = getRegister(endIndex)
+
+                addInstructions(
+                    endIndex + 1,
+                    """
+                        const-string v$tempRegister, ".?utm_source=.+"
+                        invoke-static {v$tempRegister}, Ljava/util/regex/Pattern;->compile(Ljava/lang/String;)Ljava/util/regex/Pattern;
+                        move-result-object v$matcherRegister
+                        invoke-virtual {v$matcherRegister, v$uriRegister}, Ljava/util/regex/Pattern;->matcher(Ljava/lang/CharSequence;)Ljava/util/regex/Matcher;
+                        move-result-object v$matcherRegister
+                        const-string v$tempRegister, ""
+                        invoke-virtual {v$matcherRegister, v$tempRegister}, Ljava/util/regex/Matcher;->replaceAll(Ljava/lang/String;)Ljava/lang/String;
+                        move-result-object v$uriRegister
+                        """
+                )
+            }
+        } ?: return ShareLinkFactoryFingerprint.toErrorResult()
+
+        return PatchResultSuccess()
+    }
+
+    private fun MutableMethod.getRegister(index: Int):Int {
+        return (instruction(index) as OneRegisterInstruction).registerA
+    }
+}