mirror of
https://github.com/revanced/revanced-patches
synced 2024-06-02 19:36:37 +02:00
105 lines
4.3 KiB
Kotlin
105 lines
4.3 KiB
Kotlin
package app.revanced.patches.syncforreddit.api.patch
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import android.os.Environment
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import app.revanced.patcher.annotation.*
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import app.revanced.patcher.data.BytecodeContext
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import app.revanced.patcher.extensions.InstructionExtensions.addInstructions
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import app.revanced.patcher.extensions.InstructionExtensions.getInstruction
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import app.revanced.patcher.extensions.InstructionExtensions.replaceInstruction
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import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint.Companion.resolve
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import app.revanced.patcher.patch.*
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import app.revanced.patcher.patch.annotations.Patch
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import app.revanced.patches.syncforreddit.api.fingerprints.GetAuthorizationStringFingerprint
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import app.revanced.patches.syncforreddit.api.fingerprints.GetBearerTokenFingerprint
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import org.jf.dexlib2.iface.instruction.OneRegisterInstruction
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import org.jf.dexlib2.iface.instruction.ReferenceInstruction
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import org.jf.dexlib2.iface.reference.StringReference
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import java.io.File
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import java.util.*
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@Patch
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@Name("change-oauth-client-id")
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@Description("Changes the OAuth client ID.")
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@Compatibility(
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[
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Package("com.laurencedawson.reddit_sync"),
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Package("com.laurencedawson.reddit_sync.pro")
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]
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)
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@Version("0.0.1")
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class ChangeOAuthClientIdPatch : BytecodePatch(
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listOf(GetAuthorizationStringFingerprint)
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) {
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override fun execute(context: BytecodeContext): PatchResult {
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if (clientId == null) {
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// Test if on Android
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try {
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Class.forName("android.os.Environment")
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} catch (e: ClassNotFoundException) {
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return PatchResultError("No client ID provided")
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}
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File(
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Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS),
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"reddit_client_id_revanced.txt"
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).also {
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if (it.exists()) return@also
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val error = """
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In order to use this patch, you need to provide a client ID.
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You can do this by creating a file at ${it.absolutePath} with the client ID as its content.
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Alternatively, you can provide the client ID using patch options.
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You can get your client ID from https://www.reddit.com/prefs/apps.
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The application type has to be "installed app" and the redirect URI has to be set to "http://redditsync/auth"
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""".trimIndent()
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return PatchResultError(error)
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}.let { clientId = it.readText().trim() }
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}
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GetAuthorizationStringFingerprint.result?.also { result ->
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GetBearerTokenFingerprint.also { it.resolve(context, result.classDef) }.result?.mutableMethod?.apply {
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val auth = Base64.getEncoder().encodeToString("$clientId:".toByteArray(Charsets.UTF_8))
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addInstructions(
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0,
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"""
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const-string v0, "Basic $auth"
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return-object v0
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"""
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)
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} ?: return PatchResultError("Could not find required method to patch.")
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}?.let {
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val occurrenceIndex = it.scanResult.stringsScanResult!!.matches.first().index
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it.mutableMethod.apply {
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val authorizationStringInstruction = getInstruction<ReferenceInstruction>(occurrenceIndex)
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val targetRegister = (authorizationStringInstruction as OneRegisterInstruction).registerA
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val reference = authorizationStringInstruction.reference as StringReference
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val newAuthorizationUrl = reference.string.replace(
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"client_id=.*?&".toRegex(),
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"client_id=${clientId!!}&"
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)
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replaceInstruction(
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occurrenceIndex,
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"const-string v$targetRegister, \"$newAuthorizationUrl\""
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)
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}
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} ?: return PatchResultError("Could not find required method to patch.")
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return PatchResultSuccess()
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}
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companion object : OptionsContainer() {
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var clientId by option(
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PatchOption.StringOption(
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"client-id",
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null,
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"OAuth client ID",
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"The client ID to use for OAuth."
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)
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)
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}
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}
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