Merge "Revert "Fixed attestation properties reading."" into main

use kmr_hal::env::get_property;

use log::error;

/// Retrieve the most significant attestation property for `name`.

fn attestation_property(name: &str) -> Vec<u8> {

    let prop_val =

        get_property(&format!("ro.product.{}_for_attestation", name)).unwrap_or_default();

    if !prop_val.is_empty() {

        prop_val

    } else {

        let prop_val = get_property(&format!("ro.product.vendor.{}", name)).unwrap_or_default();

        if !prop_val.is_empty() {

            prop_val

        } else {

            get_property(&format!("ro.product.{}", name))

                .unwrap_or_else(|prop_name| format!("{} unavailable", prop_name))

        }

    }

    .as_bytes()

    .to_vec()

}

/// Populate attestation ID information based on properties (where available).

/// Retrieving the serial number requires SELinux permission.

pub fn attestation_id_info() -> kmr_wire::AttestationIdInfo {

    kmr_wire::AttestationIdInfo {

        brand: attestation_property("brand"),

        device: attestation_property("device"),

        product: attestation_property("name"),

        serial: get_property("ro.serialno")

            .unwrap_or_else(|_| format!("ro.serialno unavailable"))

    let prop = |name| {

        get_property(name)

            .unwrap_or_else(|_| format!("{} unavailable", name))

            .as_bytes()

            .to_vec(),

        manufacturer: attestation_property("manufacturer"),

        model: attestation_property("model"),

            .to_vec()

    };

    kmr_wire::AttestationIdInfo {

        brand: prop("ro.product.brand"),

        device: prop("ro.product.device"),

        product: prop("ro.product.name"),

        serial: prop("ro.serialno"),

        manufacturer: prop("ro.product.manufacturer"),

        model: prop("ro.product.model"),

        // Currently modem_simulator always returns one fixed value. See `handleGetIMEI` in

        // device/google/cuttlefish/host/commands/modem_simulator/misc_service.cpp for more details.

        // TODO(b/263188546): Use device-specific IMEI values when available.