AutofillIntents.kt

1package com.peachpasswords.autofill23import android.app.PendingIntent4import android.content.Context5import android.content.Intent6import android.content.IntentSender7import android.os.Build89/**10 * PendingIntents the autofill surfaces hand to the framework: a no-op11 * attribution target the inline chip requires, the authentication12 * IntentSender that opens the branded [AutofillEntryPickerActivity], and the13 * "open new entry" launcher that the picker fires when the user taps the14 * "+ Create new entry" affordance.15 */16object AutofillIntents {17    const val EXTRA_IDENTITY_ID = "peach.autofill.identityId"18    const val EXTRA_PASSWORD_ID = "peach.autofill.passwordId"19    const val EXTRA_OTP_ID = "peach.autofill.otpId"20    const val EXTRA_OTP_DIGIT_BOX_IDS = "peach.autofill.otpDigitBoxIds"21    const val EXTRA_ORIGIN = "peach.autofill.origin"22    const val EXTRA_IS_WEB_ORIGIN = "peach.autofill.isWebOrigin"23    /** Authenticated caller package so the picker can re-resolve web-origin domains in-process. */24    const val EXTRA_CALLER_PACKAGE = "peach.autofill.callerPackage"2526    const val EXTRA_CARD_NUMBER_ID = "peach.autofill.cardNumberId"27    const val EXTRA_CARD_EXP_MONTH_ID = "peach.autofill.cardExpMonthId"28    const val EXTRA_CARD_EXP_YEAR_ID = "peach.autofill.cardExpYearId"29    const val EXTRA_CARD_EXP_DATE_ID = "peach.autofill.cardExpDateId"30    const val EXTRA_CARD_CVC_ID = "peach.autofill.cardCvcId"31    const val EXTRA_CARD_NAME_ID = "peach.autofill.cardNameId"3233    /** Host-typed username captured by the autofill framework — used to prefill the new-entry editor. */34    const val EXTRA_TYPED_USERNAME = "peach.autofill.typedUsername"35    /** Host-typed email captured by the autofill framework — used to prefill the new-entry editor. */36    const val EXTRA_TYPED_EMAIL = "peach.autofill.typedEmail"3738    /**39     * Sent by [AutofillEntryPickerActivity] to launch MainActivity on the "+ Create40     * new entry" path. The picker cancels itself and starts MainActivity with the41     * origin + typed identity so the user can save a brand-new entry pre-filled with42     * what they had typed on the host page. Carries the same key/value shape as the43     * update notification's [com.peachpasswords.updates.EXTRA_OPEN_UPDATE].44     */45    const val EXTRA_OPEN_NEW_ENTRY = "peach.autofill.openNewEntry"46    const val EXTRA_NEW_ENTRY_URL = "peach.autofill.newEntryUrl"47    const val EXTRA_NEW_ENTRY_USERNAME = "peach.autofill.newEntryUsername"48    const val EXTRA_NEW_ENTRY_EMAIL = "peach.autofill.newEntryEmail"49    /**50     * F3: one-time token proving a new-entry launch really came from the51     * in-process picker. MainActivity is exported (launcher), so without this52     * any app could pre-fill the new-entry editor with attacker-chosen53     * url/username/email.54     */55    const val EXTRA_NEW_ENTRY_TOKEN = "peach.autofill.newEntryToken"5657    private const val REQ_CHIP = 0xC0DE58    private const val REQ_PICKER = 0xBEEF5960    @Volatile private var pendingNewEntryToken: String? = null6162    /** F3: the picker calls this once per launch; the token lives only in memory. */63    fun issueNewEntryToken(): String {64        val token = java.util.UUID.randomUUID().toString()65        pendingNewEntryToken = token66        return token67    }6869    /**70     * F3: single-use check. A wrong token does NOT burn the pending one, so a71     * racing spoofed intent can only fail, not DoS the real handoff.72     */73    fun consumeNewEntryToken(token: String?): Boolean {74        val expected = pendingNewEntryToken ?: return false75        if (token != expected) return false76        pendingNewEntryToken = null77        return true78    }7980    /** Required attribution for an inline suggestion; tapping it is a no-op. */81    fun noopChipIntent(context: Context): PendingIntent {82        val intent = Intent(context, AutofillEntryPickerActivity::class.java)83        return PendingIntent.getActivity(context, REQ_CHIP, intent, immutableFlags())84    }8586    /** Authentication target for the "Search Peach…" dataset. */87    fun pickerIntentSender(context: Context, parsed: ParsedStructure): IntentSender {88        val intent = Intent(context, AutofillEntryPickerActivity::class.java).apply {89            putExtra(EXTRA_IDENTITY_ID, parsed.identityId)90            putExtra(EXTRA_PASSWORD_ID, parsed.passwordId)91            putExtra(EXTRA_OTP_ID, parsed.otpId)92            putParcelableArrayListExtra(EXTRA_OTP_DIGIT_BOX_IDS, ArrayList(parsed.otpDigitBoxIds))93            putExtra(EXTRA_ORIGIN, parsed.origin)94            putExtra(EXTRA_IS_WEB_ORIGIN, parsed.webDomain != null)95            // The picker re-resolves origin domains/app title in-process from96            // the authenticated caller package.97            putExtra(EXTRA_CALLER_PACKAGE, parsed.packageName)98            putExtra(EXTRA_CARD_NUMBER_ID, parsed.cardNumberId)99            putExtra(EXTRA_CARD_EXP_MONTH_ID, parsed.cardExpMonthId)100            putExtra(EXTRA_CARD_EXP_YEAR_ID, parsed.cardExpYearId)101            putExtra(EXTRA_CARD_EXP_DATE_ID, parsed.cardExpDateId)102            putExtra(EXTRA_CARD_CVC_ID, parsed.cardCvcId)103            putExtra(EXTRA_CARD_NAME_ID, parsed.cardNameId)104            // Mirror the browser's preUsername/preEmail capture so the "+ Create105            // new entry" path can hand the typed identity to the new-entry editor.106            // Empty/blank values are dropped — the picker reads the typed username107            // from the identity field the host anchored on.108            parsed.usernameValue?.trim()?.takeIf { it.isNotBlank() }?.let {109                putExtra(EXTRA_TYPED_USERNAME, it)110            }111            parsed.emailValue?.trim()?.takeIf { it.isNotBlank() }?.let {112                putExtra(EXTRA_TYPED_EMAIL, it)113            }114        }115        // Freezing the sender prevents the host app from rewriting origin116        // extras before the private picker receives them. The picker re-resolves117        // the origin from raw authenticated inputs in-process.118        return PendingIntent.getActivity(context, REQ_PICKER, intent, immutableFlags()).intentSender119    }120121    private fun immutableFlags(): Int =122        PendingIntent.FLAG_UPDATE_CURRENT or123            if (Build.VERSION.SDK_INT >= 23) PendingIntent.FLAG_IMMUTABLE else 0124125}