ledger_ethereum/command/
get_app_configuration.rs

1use ledger_transport::{APDUCommand, Exchange};
2use ledger_zondax_generic::App;
3
4use crate::command::InstructionCode;
5use crate::types::EthError;
6use crate::{EthApp, LedgerAppError};
7
8#[derive(Debug)]
9pub struct AppConfiguration {
10    pub arbitrary_data_enabled: bool,
11    pub erc20_provisioning_necessary: bool,
12    pub stark_enabled: bool,
13    pub stark_v2_supported: bool,
14    pub version: String,
15}
16
17impl<E> EthApp<E>
18where
19    E: Exchange + Send + Sync,
20    E::Error: std::error::Error,
21{
22    /// Retrieves the app configuration
23    // https://github.com/LedgerHQ/app-ethereum/blob/develop/doc/ethapp.adoc#get-app-configuration
24    pub async fn configuration(&self) -> Result<AppConfiguration, EthError<E::Error>> {
25        let command = APDUCommand {
26            cla: Self::CLA,
27            ins: InstructionCode::GetAppConfiguration as u8,
28            p1: 0,
29            p2: 0,
30            data: vec![],
31        };
32        let response = self
33            .transport
34            .exchange(&command)
35            .await
36            .map_err(LedgerAppError::TransportError)?;
37        let response_data = response.data();
38
39        Ok(AppConfiguration {
40            arbitrary_data_enabled: response_data[0] & 0x01 == 0x01,
41            erc20_provisioning_necessary: response_data[0] & 0x02 == 0x02,
42            stark_enabled: response_data[0] & 0x04 == 0x04,
43            stark_v2_supported: response_data[0] & 0x08 == 0x08,
44            version: format!(
45                "{}.{}.{}",
46                response_data[1], response_data[2], response_data[3]
47            ),
48        })
49    }
50}
ledger_ethereum/command/get_app_configuration.rs

ledger_ethereum/command/
get_app_configuration.rs
