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/*
* Copyright © 2014-2021 The Android Password Store Authors. All Rights Reserved.
* SPDX-License-Identifier: GPL-3.0-only
*/
package dev.msfjarvis.aps.ui.autofill
import android.app.PendingIntent
import android.content.Context
import android.content.Intent
import android.content.IntentSender
import android.os.Build
import android.os.Bundle
import android.view.autofill.AutofillManager
import androidx.annotation.RequiresApi
import androidx.appcompat.app.AppCompatActivity
import androidx.lifecycle.lifecycleScope
import com.github.androidpasswordstore.autofillparser.AutofillAction
import com.github.androidpasswordstore.autofillparser.Credentials
import com.github.michaelbull.result.getOrElse
import com.github.michaelbull.result.onFailure
import com.github.michaelbull.result.onSuccess
import com.github.michaelbull.result.runCatching
import dagger.hilt.android.AndroidEntryPoint
import dev.msfjarvis.aps.injection.crypto.CryptoSet
import dev.msfjarvis.aps.injection.password.PasswordEntryFactory
import dev.msfjarvis.aps.ui.crypto.DecryptActivityV2
import dev.msfjarvis.aps.util.autofill.AutofillPreferences
import dev.msfjarvis.aps.util.autofill.AutofillResponseBuilder
import dev.msfjarvis.aps.util.autofill.DirectoryStructure
import dev.msfjarvis.aps.util.extensions.asLog
import java.io.ByteArrayOutputStream
import java.io.File
import javax.inject.Inject
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext
import logcat.LogPriority.ERROR
import logcat.logcat
@RequiresApi(Build.VERSION_CODES.O)
@AndroidEntryPoint
class AutofillDecryptActivityV2 : AppCompatActivity() {
companion object {
private const val EXTRA_FILE_PATH = "dev.msfjarvis.aps.autofill.oreo.EXTRA_FILE_PATH"
private const val EXTRA_SEARCH_ACTION = "dev.msfjarvis.aps.autofill.oreo.EXTRA_SEARCH_ACTION"
private var decryptFileRequestCode = 1
fun makeDecryptFileIntent(file: File, forwardedExtras: Bundle, context: Context): Intent {
return Intent(context, AutofillDecryptActivityV2::class.java).apply {
putExtras(forwardedExtras)
putExtra(EXTRA_SEARCH_ACTION, true)
putExtra(EXTRA_FILE_PATH, file.absolutePath)
}
}
fun makeDecryptFileIntentSender(file: File, context: Context): IntentSender {
val intent =
Intent(context, AutofillDecryptActivityV2::class.java).apply {
putExtra(EXTRA_SEARCH_ACTION, false)
putExtra(EXTRA_FILE_PATH, file.absolutePath)
}
return PendingIntent.getActivity(
context,
decryptFileRequestCode++,
intent,
PendingIntent.FLAG_CANCEL_CURRENT
)
.intentSender
}
}
@Inject lateinit var passwordEntryFactory: PasswordEntryFactory
@Inject lateinit var cryptos: CryptoSet
private lateinit var directoryStructure: DirectoryStructure
override fun onStart() {
super.onStart()
val filePath =
intent?.getStringExtra(EXTRA_FILE_PATH)
?: run {
logcat(ERROR) { "AutofillDecryptActivityV2 started without EXTRA_FILE_PATH" }
finish()
return
}
val clientState =
intent?.getBundleExtra(AutofillManager.EXTRA_CLIENT_STATE)
?: run {
logcat(ERROR) { "AutofillDecryptActivityV2 started without EXTRA_CLIENT_STATE" }
finish()
return
}
val isSearchAction = intent?.getBooleanExtra(EXTRA_SEARCH_ACTION, true)!!
val action = if (isSearchAction) AutofillAction.Search else AutofillAction.Match
directoryStructure = AutofillPreferences.directoryStructure(this)
logcat { action.toString() }
lifecycleScope.launch {
val credentials = decryptCredential(File(filePath))
if (credentials == null) {
setResult(RESULT_CANCELED)
} else {
val fillInDataset =
AutofillResponseBuilder.makeFillInDataset(
this@AutofillDecryptActivityV2,
credentials,
clientState,
action
)
withContext(Dispatchers.Main) {
setResult(
RESULT_OK,
Intent().apply { putExtra(AutofillManager.EXTRA_AUTHENTICATION_RESULT, fillInDataset) }
)
}
}
withContext(Dispatchers.Main) { finish() }
}
}
private suspend fun decryptCredential(file: File): Credentials? {
runCatching { file.inputStream() }
.onFailure { e ->
logcat(ERROR) { e.asLog("File to decrypt not found") }
return null
}
.onSuccess { encryptedInput ->
runCatching {
val crypto = cryptos.first { it.canHandle(file.absolutePath) }
withContext(Dispatchers.IO) {
val outputStream = ByteArrayOutputStream()
crypto.decrypt(
DecryptActivityV2.PRIV_KEY,
DecryptActivityV2.PASS,
encryptedInput,
outputStream,
)
outputStream
}
}
.onFailure { e ->
logcat(ERROR) { e.asLog("Decryption failed") }
return null
}
.onSuccess { result ->
return runCatching {
val entry = passwordEntryFactory.create(lifecycleScope, result.toByteArray())
AutofillPreferences.credentialsFromStoreEntry(this, file, entry, directoryStructure)
}
.getOrElse { e ->
logcat(ERROR) { e.asLog("Failed to parse password entry") }
return null
}
}
}
return null
}
}
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