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use super::{Command, CommandError, RequestCtap2, StatusCode};
use crate::transport::errors::HIDError;
use crate::transport::{FidoDevice, VirtualFidoDevice};
use serde_cbor::{de::from_slice, Value};
#[derive(Debug, Default)]
pub struct Reset {}
impl RequestCtap2 for Reset {
type Output = ();
fn command(&self) -> Command {
Command::Reset
}
fn wire_format(&self) -> Result<Vec<u8>, HIDError> {
Ok(Vec::new())
}
fn handle_response_ctap2<Dev: FidoDevice>(
&self,
_dev: &mut Dev,
input: &[u8],
) -> Result<Self::Output, HIDError> {
if input.is_empty() {
return Err(CommandError::InputTooSmall.into());
}
let status: StatusCode = input[0].into();
if status.is_ok() {
Ok(())
} else {
let msg = if input.len() > 1 {
let data: Value = from_slice(&input[1..]).map_err(CommandError::Deserializing)?;
Some(data)
} else {
None
};
Err(CommandError::StatusCode(status, msg).into())
}
}
fn send_to_virtual_device<Dev: VirtualFidoDevice>(
&self,
dev: &mut Dev,
) -> Result<Self::Output, HIDError> {
dev.reset(self)
}
}
#[cfg(test)]
pub mod tests {
use super::*;
use crate::consts::HIDCmd;
use crate::transport::device_selector::Device;
use crate::transport::{hid::HIDDevice, FidoDevice, FidoDeviceIO, FidoProtocol};
use rand::{thread_rng, RngCore};
use serde_cbor::{de::from_slice, Value};
fn issue_command_and_get_response(cmd: u8, add: &[u8]) -> Result<(), HIDError> {
let mut device = Device::new("commands/Reset").unwrap();
assert_eq!(device.get_protocol(), FidoProtocol::CTAP2);
// ctap2 request
let mut cid = [0u8; 4];
thread_rng().fill_bytes(&mut cid);
device.set_cid(cid);
let mut msg = cid.to_vec();
msg.extend(vec![HIDCmd::Cbor.into(), 0x00, 0x1]); // cmd + bcnt
msg.extend(vec![0x07]); // authenticatorReset
device.add_write(&msg, 0);
// ctap2 response
let len = 0x1 + add.len() as u8;
let mut msg = cid.to_vec();
msg.extend(vec![HIDCmd::Cbor.into(), 0x00, len]); // cmd + bcnt
msg.push(cmd); // Status code
msg.extend(add); // + maybe additional data
device.add_read(&msg, 0);
device.send_cbor(&Reset {})
}
#[test]
fn test_select_ctap2_only() {
// Test, if we can parse the status codes specified by the spec
// Ok()
issue_command_and_get_response(0, &[]).expect("Unexpected error");
// Denied by the user
let response = issue_command_and_get_response(0x27, &[]).expect_err("Not an error!");
assert!(matches!(
response,
HIDError::Command(CommandError::StatusCode(StatusCode::OperationDenied, None))
));
// Timeout
let response = issue_command_and_get_response(0x2F, &[]).expect_err("Not an error!");
assert!(matches!(
response,
HIDError::Command(CommandError::StatusCode(
StatusCode::UserActionTimeout,
None
))
));
// Unexpected error with more random CBOR-data
let add_data = vec![
0x63, // text(3)
0x61, 0x6c, 0x67, // "alg"
];
let response = issue_command_and_get_response(0x02, &add_data).expect_err("Not an error!");
match response {
HIDError::Command(CommandError::StatusCode(StatusCode::InvalidParameter, Some(d))) => {
let expected: Value = from_slice(&add_data).unwrap();
assert_eq!(d, expected)
}
e => panic!("Not the expected response: {:?}", e),
}
}
}