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

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oSumAtrIX 2023-06-30 02:30:41 +02:00
parent 7685e99ac0
commit 14809cd451
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4 changed files with 74 additions and 0 deletions

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package app.revanced.patches.reddit.customclients.redditisfun.api.fingerprints
import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
abstract class AbstractClientIdFingerprint(string: String) : MethodFingerprint(
strings = listOfNotNull("yyOCBp.RHJhDKd", string),
)

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package app.revanced.patches.reddit.customclients.redditisfun.api.fingerprints
object BasicAuthorizationFingerprint : AbstractClientIdFingerprint(
string = "fJOxVwBUyo*=f:<OoejWs:AqmIJ", // Encrypted basic authorization string.
)

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package app.revanced.patches.reddit.customclients.redditisfun.api.fingerprints
object BuildAuthorizationStringFingerprint : AbstractClientIdFingerprint(
string = "client_id"
)

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package app.revanced.patches.reddit.customclients.redditisfun.api.patch
import app.revanced.patcher.annotation.Compatibility
import app.revanced.patcher.annotation.Package
import app.revanced.patcher.data.BytecodeContext
import app.revanced.patcher.extensions.InstructionExtensions.getInstruction
import app.revanced.patcher.extensions.InstructionExtensions.replaceInstruction
import app.revanced.patcher.fingerprint.method.impl.MethodFingerprintResult
import app.revanced.patcher.fingerprint.method.impl.MethodFingerprintResult.MethodFingerprintScanResult.StringsScanResult.StringMatch
import app.revanced.patcher.patch.PatchResult
import app.revanced.patcher.patch.PatchResultSuccess
import app.revanced.patches.reddit.customclients.AbstractChangeOAuthClientIdPatch
import app.revanced.patches.reddit.customclients.ChangeOAuthClientIdPatchAnnotation
import app.revanced.patches.reddit.customclients.redditisfun.api.fingerprints.BasicAuthorizationFingerprint
import app.revanced.patches.reddit.customclients.redditisfun.api.fingerprints.BuildAuthorizationStringFingerprint
import org.jf.dexlib2.iface.instruction.OneRegisterInstruction
@ChangeOAuthClientIdPatchAnnotation
@Compatibility([Package("com.andrewshu.android.reddit")])
class ChangeOAuthClientIdPatch : AbstractChangeOAuthClientIdPatch(
"redditisfun://auth",
Options,
listOf(
BuildAuthorizationStringFingerprint,
BasicAuthorizationFingerprint,
)
) {
override fun List<MethodFingerprintResult>.patch(context: BytecodeContext): PatchResult {
/**
* Replaces a one register instruction with a const-string instruction
* at the index returned by [getReplacementIndex].
*
* @param string The string to replace the instruction with.
* @param getReplacementIndex A function that returns the index of the instruction to replace
* using the [StringMatch] list from the [MethodFingerprintResult].
*/
fun MethodFingerprintResult.replaceWith(
string: String,
getReplacementIndex: List<StringMatch>.() -> Int,
) = mutableMethod.apply {
val replacementIndex = scanResult.stringsScanResult!!.matches.getReplacementIndex()
val clientIdRegister = getInstruction<OneRegisterInstruction>(replacementIndex).registerA
replaceInstruction(replacementIndex, "const-string v$clientIdRegister, \"$string\"")
}
// Patch OAuth authorization.
first().replaceWith(clientId!!) { first().index + 4 }
// Path basic authorization.
last().replaceWith("$clientId:") { last().index + 7 }
return PatchResultSuccess()
}
companion object Options : AbstractChangeOAuthClientIdPatch.Options.ChangeOAuthClientIdOptionsContainer()
}