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/*
* Copyright © 2014-2020 The Android Password Store Authors. All Rights Reserved.
* SPDX-License-Identifier: GPL-3.0-only
*/
package dev.msfjarvis.aps.util.services
import android.content.Context
import android.os.Build
import android.os.CancellationSignal
import android.service.autofill.AutofillService
import android.service.autofill.FillCallback
import android.service.autofill.FillRequest
import android.service.autofill.FillResponse
import android.service.autofill.SaveCallback
import android.service.autofill.SaveRequest
import androidx.annotation.RequiresApi
import com.github.ajalt.timberkt.d
import com.github.ajalt.timberkt.e
import com.github.androidpasswordstore.autofillparser.AutofillScenario
import com.github.androidpasswordstore.autofillparser.Credentials
import com.github.androidpasswordstore.autofillparser.FillableForm
import com.github.androidpasswordstore.autofillparser.FixedSaveCallback
import com.github.androidpasswordstore.autofillparser.FormOrigin
import com.github.androidpasswordstore.autofillparser.cachePublicSuffixList
import com.github.androidpasswordstore.autofillparser.passwordValue
import com.github.androidpasswordstore.autofillparser.recoverNodes
import com.github.androidpasswordstore.autofillparser.usernameValue
import dev.msfjarvis.aps.BuildConfig
import dev.msfjarvis.aps.R
import dev.msfjarvis.aps.ui.autofill.AutofillSaveActivity
import dev.msfjarvis.aps.util.autofill.Api30AutofillResponseBuilder
import dev.msfjarvis.aps.util.autofill.AutofillResponseBuilder
import dev.msfjarvis.aps.util.settings.PreferenceKeys
import dev.msfjarvis.aps.util.extensions.getString
import dev.msfjarvis.aps.util.extensions.hasFlag
import dev.msfjarvis.aps.util.extensions.sharedPrefs
@RequiresApi(Build.VERSION_CODES.O)
class OreoAutofillService : AutofillService() {
companion object {
// TODO: Provide a user-configurable denylist
private val DENYLISTED_PACKAGES = listOf(
BuildConfig.APPLICATION_ID,
"android",
"com.android.settings",
"com.android.settings.intelligence",
"com.android.systemui",
"com.oneplus.applocker",
"org.sufficientlysecure.keychain",
)
private const val DISABLE_AUTOFILL_DURATION_MS = 1000 * 60 * 60 * 24L
}
override fun onCreate() {
super.onCreate()
cachePublicSuffixList(applicationContext)
}
override fun onFillRequest(
request: FillRequest,
cancellationSignal: CancellationSignal,
callback: FillCallback
) {
val structure = request.fillContexts.lastOrNull()?.structure ?: run {
callback.onSuccess(null)
return
}
if (structure.activityComponent.packageName in DENYLISTED_PACKAGES) {
if (Build.VERSION.SDK_INT >= 28) {
callback.onSuccess(FillResponse.Builder().run {
disableAutofill(DISABLE_AUTOFILL_DURATION_MS)
build()
})
} else {
callback.onSuccess(null)
}
return
}
val formToFill = FillableForm.parseAssistStructure(
this, structure,
isManualRequest = request.flags hasFlag FillRequest.FLAG_MANUAL_REQUEST,
getCustomSuffixes(),
) ?: run {
d { "Form cannot be filled" }
callback.onSuccess(null)
return
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
Api30AutofillResponseBuilder(formToFill).fillCredentials(this, request.inlineSuggestionsRequest, callback)
} else {
AutofillResponseBuilder(formToFill).fillCredentials(this, callback)
}
}
override fun onSaveRequest(request: SaveRequest, callback: SaveCallback) {
// SaveCallback's behavior and feature set differs based on both target and device SDK, so
// we replace it with a wrapper that works the same in all situations.
@Suppress("NAME_SHADOWING") val callback = FixedSaveCallback(this, callback)
val structure = request.fillContexts.lastOrNull()?.structure ?: run {
callback.onFailure(getString(R.string.oreo_autofill_save_app_not_supported))
return
}
val clientState = request.clientState ?: run {
e { "Received save request without client state" }
callback.onFailure(getString(R.string.oreo_autofill_save_internal_error))
return
}
val scenario = AutofillScenario.fromClientState(clientState)?.recoverNodes(structure)
?: run {
e { "Failed to recover client state or nodes from client state" }
callback.onFailure(getString(R.string.oreo_autofill_save_internal_error))
return
}
val formOrigin = FormOrigin.fromBundle(clientState) ?: run {
e { "Failed to recover form origin from client state" }
callback.onFailure(getString(R.string.oreo_autofill_save_internal_error))
return
}
val username = scenario.usernameValue
val password = scenario.passwordValue ?: run {
callback.onFailure(getString(R.string.oreo_autofill_save_passwords_dont_match))
return
}
callback.onSuccess(
AutofillSaveActivity.makeSaveIntentSender(
this,
credentials = Credentials(username, password, null),
formOrigin = formOrigin
)
)
}
}
fun Context.getDefaultUsername() = sharedPrefs.getString(PreferenceKeys.OREO_AUTOFILL_DEFAULT_USERNAME)
fun Context.getCustomSuffixes(): Sequence<String> {
return sharedPrefs.getString(PreferenceKeys.OREO_AUTOFILL_CUSTOM_PUBLIC_SUFFIXES)
?.splitToSequence('\n')
?.filter { it.isNotBlank() && it.first() != '.' && it.last() != '.' }
?: emptySequence()
}
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