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_TAG = 0xBEEF59    private const val REQ_PICKER_CHIP_TAG = 0xBEE06061    private fun requestCode(requestId: Int, tag: Int): Int = requestId xor tag6263    @Volatile private var pendingNewEntryToken: String? = null6465    /** F3: the picker calls this once per launch; the token lives only in memory. */66    fun issueNewEntryToken(): String {67        val token = java.util.UUID.randomUUID().toString()68        pendingNewEntryToken = token69        return token70    }7172    /**73     * F3: single-use check. A wrong token does NOT burn the pending one, so a74     * racing spoofed intent can only fail, not DoS the real handoff.75     */76    fun consumeNewEntryToken(token: String?): Boolean {77        val expected = pendingNewEntryToken ?: return false78        if (token != expected) return false79        pendingNewEntryToken = null80        return true81    }82    fun noopChipIntent(context: Context, requestId: Int): PendingIntent {83        val intent = Intent(context, AutofillEntryPickerActivity::class.java)84        return PendingIntent.getActivity(context, requestCode(requestId, REQ_CHIP), intent, immutableFlags(false))85    }8687    /**88     * Inline chip PendingIntent for the "Search Peach…" picker chip: tapping it opens89     * the picker activity with the parsed structure so the user can browse the90     * full vault. The system menu row for the same dataset uses [pickerIntentSender]91     * (an IntentSender routed through the framework auth path).92     */93    fun pickerChipPendingIntent(context: Context, parsed: ParsedStructure, requestId: Int): PendingIntent {94        val intent = Intent(context, AutofillEntryPickerActivity::class.java).apply {95            putExtra(EXTRA_IDENTITY_ID, parsed.identityId)96            putExtra(EXTRA_PASSWORD_ID, parsed.passwordId)97            putExtra(EXTRA_OTP_ID, parsed.otpId)98            putParcelableArrayListExtra(EXTRA_OTP_DIGIT_BOX_IDS, ArrayList(parsed.otpDigitBoxIds))99            putExtra(EXTRA_ORIGIN, parsed.origin)100            putExtra(EXTRA_IS_WEB_ORIGIN, parsed.webDomain != null)101            putExtra(EXTRA_CALLER_PACKAGE, parsed.packageName)102            putExtra(EXTRA_CARD_NUMBER_ID, parsed.cardNumberId)103            putExtra(EXTRA_CARD_EXP_MONTH_ID, parsed.cardExpMonthId)104            putExtra(EXTRA_CARD_EXP_YEAR_ID, parsed.cardExpYearId)105            putExtra(EXTRA_CARD_EXP_DATE_ID, parsed.cardExpDateId)106            putExtra(EXTRA_CARD_CVC_ID, parsed.cardCvcId)107            putExtra(EXTRA_CARD_NAME_ID, parsed.cardNameId)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        return PendingIntent.getActivity(context, requestCode(requestId, REQ_PICKER_CHIP_TAG), intent, immutableFlags(false))116    }117118    /** Authentication target for the "Search Peach…" dataset. */119    fun pickerIntentSender(context: Context, parsed: ParsedStructure, requestId: Int): IntentSender {120        val intent = Intent(context, AutofillEntryPickerActivity::class.java).apply {121            putExtra(EXTRA_IDENTITY_ID, parsed.identityId)122            putExtra(EXTRA_PASSWORD_ID, parsed.passwordId)123            putExtra(EXTRA_OTP_ID, parsed.otpId)124            putParcelableArrayListExtra(EXTRA_OTP_DIGIT_BOX_IDS, ArrayList(parsed.otpDigitBoxIds))125            putExtra(EXTRA_ORIGIN, parsed.origin)126            putExtra(EXTRA_IS_WEB_ORIGIN, parsed.webDomain != null)127            // The picker re-resolves origin domains/app title in-process from128            // the authenticated caller package.129            putExtra(EXTRA_CALLER_PACKAGE, parsed.packageName)130            putExtra(EXTRA_CARD_NUMBER_ID, parsed.cardNumberId)131            putExtra(EXTRA_CARD_EXP_MONTH_ID, parsed.cardExpMonthId)132            putExtra(EXTRA_CARD_EXP_YEAR_ID, parsed.cardExpYearId)133            putExtra(EXTRA_CARD_EXP_DATE_ID, parsed.cardExpDateId)134            putExtra(EXTRA_CARD_CVC_ID, parsed.cardCvcId)135            putExtra(EXTRA_CARD_NAME_ID, parsed.cardNameId)136            // Mirror the browser's preUsername/preEmail capture so the "+ Create137            // new entry" path can hand the typed identity to the new-entry editor.138            // Empty/blank values are dropped — the picker reads the typed username139            // from the identity field the host anchored on.140            parsed.usernameValue?.trim()?.takeIf { it.isNotBlank() }?.let {141                putExtra(EXTRA_TYPED_USERNAME, it)142            }143            parsed.emailValue?.trim()?.takeIf { it.isNotBlank() }?.let {144                putExtra(EXTRA_TYPED_EMAIL, it)145            }146        }147        // Freezing the sender prevents the host app from rewriting origin148        // extras before the private picker receives them. The picker re-resolves149        // the origin from raw authenticated inputs in-process.150        return PendingIntent.getActivity(context, requestCode(requestId, REQ_PICKER_TAG), intent, immutableFlags(false)).intentSender151    }152153    private fun immutableFlags(updateCurrent: Boolean = true): Int =154        (if (updateCurrent) PendingIntent.FLAG_UPDATE_CURRENT else 0) or155            if (Build.VERSION.SDK_INT >= 23) PendingIntent.FLAG_IMMUTABLE else 0156157}