feat(boostforreddit): add change-oauth-client-id patch

2023-06-18 02:19:08 +02:00
parent 7f1b70e625
commit 1c95e0fcad
11 changed files with 179 additions and 108 deletions
@@ -0,0 +1,57 @@
+package app.revanced.patches.reddit.customclients
+
+import android.os.Environment
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import app.revanced.patcher.patch.*
+import app.revanced.patches.reddit.customclients.boostforreddit.api.patch.ChangeOAuthClientIdPatch
+import app.revanced.patches.reddit.customclients.syncforreddit.api.patch.ChangeOAuthClientIdPatch.Companion.clientId
+import java.io.File
+
+abstract class AbstractChangeOAuthClientIdPatch(
+    private val redirectUri: String,
+    private val fingerprint: MethodFingerprint,
+) : BytecodePatch(listOf(fingerprint)) {
+    override fun execute(context: BytecodeContext): PatchResult {
+        if (ChangeOAuthClientIdPatch.clientId == null) {
+            // Test if on Android
+            try {
+                Class.forName("android.os.Environment")
+            } catch (e: ClassNotFoundException) {
+                return PatchResultError("No client ID provided")
+            }
+
+            File(Environment.getExternalStorageDirectory(), "reddit_client_id_revanced.txt").also {
+                if (it.exists()) return@also
+
+                val error = """
+                    In order to use this patch, you need to provide a client ID.
+                    You can do this by creating a file at ${it.absolutePath} with the client ID as its content.
+                    Alternatively, you can provide the client ID using patch options.
+                    
+                    You can get your client ID from https://www.reddit.com/prefs/apps.
+                    The application type has to be "installed app" and the redirect URI has to be set to "$redirectUri"
+                """.trimIndent()
+
+                return PatchResultError(error)
+            }.let { clientId = it.readText().trim() }
+        }
+
+        return fingerprint.patch(context)
+    }
+
+    abstract fun MethodFingerprint.patch(context: BytecodeContext): PatchResult
+
+    companion object Options {
+        open class ChangeOAuthClientIdOptionsContainer : OptionsContainer() {
+            var clientId by option(
+                PatchOption.StringOption(
+                    "client-id",
+                    null,
+                    "OAuth client ID",
+                    "The Reddit OAuth client ID."
+                )
+            )
+        }
+    }
+}
@@ -0,0 +1,11 @@
+package app.revanced.patches.reddit.customclients.boostforreddit.api.fingerprints
+
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+
+object GetClientIdFingerprint : MethodFingerprint(
+    customFingerprint = custom@{ methodDef, classDef ->
+        if (!classDef.type.endsWith("Credentials;")) return@custom false
+
+        methodDef.name == "getClientId"
+    }
+)
@@ -0,0 +1,36 @@
+package app.revanced.patches.reddit.customclients.boostforreddit.api.patch
+
+import app.revanced.extensions.toErrorResult
+import app.revanced.patcher.annotation.*
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.extensions.InstructionExtensions.addInstructions
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import app.revanced.patcher.patch.PatchResult
+import app.revanced.patcher.patch.PatchResultSuccess
+import app.revanced.patcher.patch.annotations.Patch
+import app.revanced.patches.reddit.customclients.AbstractChangeOAuthClientIdPatch
+import app.revanced.patches.reddit.customclients.boostforreddit.api.fingerprints.GetClientIdFingerprint
+
+@Patch
+@Name("change-oauth-client-id")
+@Description("Changes the OAuth client ID in Boost for Reddit.")
+@Compatibility([Package("com.rubenmayayo.reddit")])
+@Version("0.0.1")
+class ChangeOAuthClientIdPatch : AbstractChangeOAuthClientIdPatch(
+    "http://rubenmayayo.com",
+    GetClientIdFingerprint
+) {
+    override fun MethodFingerprint.patch(context: BytecodeContext): PatchResult {
+        result?.mutableMethod?.addInstructions(
+            0,
+            """
+                     const-string v0, "$clientId"
+                     return-object v0
+                """
+        ) ?: return toErrorResult()
+
+        return PatchResultSuccess()
+    }
+
+    companion object : Options.ChangeOAuthClientIdOptionsContainer()
+}
@@ -0,0 +1,11 @@
+package app.revanced.patches.reddit.customclients.syncforreddit.ads.fingerprints
+
+import app.revanced.patcher.extensions.or
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import org.jf.dexlib2.AccessFlags
+
+object IsAdsEnabledFingerprint : MethodFingerprint(
+    returnType = "Z",
+    accessFlags = AccessFlags.PUBLIC or AccessFlags.STATIC,
+    strings = listOf("SyncIapHelper")
+)
@@ -0,0 +1,36 @@
+package app.revanced.patches.reddit.customclients.syncforreddit.ads.patch
+
+import app.revanced.extensions.toErrorResult
+import app.revanced.patcher.annotation.*
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.extensions.InstructionExtensions.addInstructions
+import app.revanced.patcher.patch.BytecodePatch
+import app.revanced.patcher.patch.PatchResult
+import app.revanced.patcher.patch.PatchResultSuccess
+import app.revanced.patcher.patch.annotations.DependsOn
+import app.revanced.patcher.patch.annotations.Patch
+import app.revanced.patches.reddit.customclients.syncforreddit.ads.fingerprints.IsAdsEnabledFingerprint
+import app.revanced.patches.reddit.customclients.syncforreddit.detection.piracy.patch.DisablePiracyDetectionPatch
+
+@Patch
+@Name("disable-ads")
+@DependsOn([DisablePiracyDetectionPatch::class])
+@Description("Disables ads.")
+@Compatibility([Package("com.laurencedawson.reddit_sync")])
+@Version("0.0.1")
+class DisableAdsPatch : BytecodePatch(listOf(IsAdsEnabledFingerprint)) {
+    override fun execute(context: BytecodeContext): PatchResult {
+        IsAdsEnabledFingerprint.result?.mutableMethod?.apply {
+            addInstructions(
+                0,
+                """
+                const/4 v0, 0x0
+                return v0
+            """
+            )
+        } ?: return IsAdsEnabledFingerprint.toErrorResult()
+
+        return PatchResultSuccess()
+    }
+
+}
@@ -0,0 +1,7 @@
+package app.revanced.patches.reddit.customclients.syncforreddit.api.fingerprints
+
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+
+object GetAuthorizationStringFingerprint : MethodFingerprint(
+    strings = listOf("authorize.compact?client_id")
+)
@@ -0,0 +1,7 @@
+package app.revanced.patches.reddit.customclients.syncforreddit.api.fingerprints
+
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+
+object GetBearerTokenFingerprint : MethodFingerprint(
+    strings = listOf("Basic")
+)
@@ -0,0 +1,68 @@
+package app.revanced.patches.reddit.customclients.syncforreddit.api.patch
+
+import app.revanced.extensions.toErrorResult
+import app.revanced.patcher.annotation.*
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.extensions.InstructionExtensions.addInstructions
+import app.revanced.patcher.extensions.InstructionExtensions.getInstruction
+import app.revanced.patcher.extensions.InstructionExtensions.replaceInstruction
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint.Companion.resolve
+import app.revanced.patcher.patch.PatchResult
+import app.revanced.patcher.patch.PatchResultSuccess
+import app.revanced.patcher.patch.annotations.Patch
+import app.revanced.patches.reddit.customclients.AbstractChangeOAuthClientIdPatch
+import app.revanced.patches.reddit.customclients.syncforreddit.api.fingerprints.GetAuthorizationStringFingerprint
+import app.revanced.patches.reddit.customclients.syncforreddit.api.fingerprints.GetBearerTokenFingerprint
+import org.jf.dexlib2.iface.instruction.OneRegisterInstruction
+import org.jf.dexlib2.iface.instruction.ReferenceInstruction
+import org.jf.dexlib2.iface.reference.StringReference
+import java.util.*
+
+
+@Patch
+@Name("change-oauth-client-id")
+@Description("Changes the OAuth client ID.")
+@Compatibility([Package("com.laurencedawson.reddit_sync"), Package("com.laurencedawson.reddit_sync.pro")])
+@Version("0.0.1")
+class ChangeOAuthClientIdPatch : AbstractChangeOAuthClientIdPatch(
+    "http://redditsync/auth",
+    GetAuthorizationStringFingerprint,
+) {
+    override fun MethodFingerprint.patch(context: BytecodeContext): PatchResult {
+        result?.also { result ->
+            GetBearerTokenFingerprint.also { it.resolve(context, result.classDef) }.result?.mutableMethod?.apply {
+                val auth = Base64.getEncoder().encodeToString("$clientId:".toByteArray(Charsets.UTF_8))
+                addInstructions(
+                    0,
+                    """
+                         const-string v0, "Basic $auth"
+                         return-object v0
+                    """
+                )
+            } ?: return GetBearerTokenFingerprint.toErrorResult()
+        }?.let {
+            val occurrenceIndex = it.scanResult.stringsScanResult!!.matches.first().index
+
+            it.mutableMethod.apply {
+                val authorizationStringInstruction = getInstruction<ReferenceInstruction>(occurrenceIndex)
+                val targetRegister = (authorizationStringInstruction as OneRegisterInstruction).registerA
+                val reference = authorizationStringInstruction.reference as StringReference
+
+                val newAuthorizationUrl = reference.string.replace(
+                    "client_id=.*?&".toRegex(),
+                    "client_id=${clientId!!}&"
+                )
+
+                replaceInstruction(
+                    occurrenceIndex,
+                    "const-string v$targetRegister, \"$newAuthorizationUrl\""
+                )
+            }
+        } ?: return toErrorResult()
+
+        return PatchResultSuccess()
+    }
+
+    companion object : Options.ChangeOAuthClientIdOptionsContainer()
+}
@@ -0,0 +1,29 @@
+package app.revanced.patches.syncforreddit.detection.piracy.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
+import org.jf.dexlib2.iface.instruction.ReferenceInstruction
+import org.jf.dexlib2.iface.reference.TypeReference
+
+object PiracyDetectionFingerprint : MethodFingerprint(
+    returnType = "V",
+    accessFlags = AccessFlags.PRIVATE or AccessFlags.FINAL,
+    opcodes = listOf(
+        Opcode.NEW_INSTANCE,
+        Opcode.INVOKE_DIRECT,
+        Opcode.NEW_INSTANCE,
+        Opcode.INVOKE_DIRECT,
+        Opcode.INVOKE_VIRTUAL
+    ),
+    customFingerprint = { method, _ ->
+        method.implementation?.instructions?.any {
+            if (it.opcode != Opcode.NEW_INSTANCE) return@any false
+
+            val reference = (it as ReferenceInstruction).reference
+
+            reference.toString() == "Lcom/github/javiersantos/piracychecker/PiracyChecker;"
+        } ?: false
+    }
+)
@@ -0,0 +1,28 @@
+package app.revanced.patches.reddit.customclients.syncforreddit.detection.piracy.patch
+
+import app.revanced.extensions.toErrorResult
+import app.revanced.patcher.annotation.Description
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.extensions.InstructionExtensions.addInstruction
+import app.revanced.patcher.patch.BytecodePatch
+import app.revanced.patcher.patch.PatchResult
+import app.revanced.patcher.patch.PatchResultSuccess
+import app.revanced.patches.syncforreddit.detection.piracy.fingerprints.PiracyDetectionFingerprint
+
+@Description("Disables detection of modified versions.")
+@Version("0.0.1")
+class DisablePiracyDetectionPatch : BytecodePatch(listOf(PiracyDetectionFingerprint)) {
+    override fun execute(context: BytecodeContext): PatchResult {
+        PiracyDetectionFingerprint.result?.mutableMethod?.apply {
+            addInstruction(
+                0,
+                """
+                    return-void
+                """
+            )
+        } ?: return PiracyDetectionFingerprint.toErrorResult()
+
+        return PatchResultSuccess()
+    }
+}