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Migrate PublicKeyCredentialSource to read_cbor_map.

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I didn't realize that the values were actually constants, as
discriminants of an enum.
This commit is contained in:
Guillaume Endignoux
2020-06-09 17:51:46 +02:00
parent c8864666e0
commit b0321f6b4f
1 changed files with 21 additions and 16 deletions
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37
src/ctap/data_formats.rs
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@@ -530,27 +530,32 @@ impl TryFrom<cbor::Value> for PublicKeyCredentialSource {
type Error = Ctap2StatusCode;
fn try_from(cbor_value: cbor::Value) -> Result<Self, Ctap2StatusCode> {
use PublicKeyCredentialSourceField::*;
let mut map = extract_map(cbor_value)?;
let credential_id = extract_byte_string(ok_or_missing(map.remove(&CredentialId.into()))?)?;
let private_key = extract_byte_string(ok_or_missing(map.remove(&PrivateKey.into()))?)?;
use PublicKeyCredentialSourceField::{
CredProtectPolicy, CredRandom, CredentialId, OtherUi, PrivateKey, RpId, UserHandle,
};
read_cbor_map! {
extract_map(cbor_value)?,
credential_id @ CredentialId,
private_key @ PrivateKey,
rp_id @ RpId,
user_handle @ UserHandle,
other_ui @ OtherUi,
cred_random @ CredRandom,
cred_protect_policy @ CredProtectPolicy,
};
let credential_id = extract_byte_string(ok_or_missing(credential_id)?)?;
let private_key = extract_byte_string(ok_or_missing(private_key)?)?;
if private_key.len() != 32 {
return Err(Ctap2StatusCode::CTAP2_ERR_INVALID_CBOR);
}
let private_key = ecdsa::SecKey::from_bytes(array_ref!(private_key, 0, 32))
.ok_or(Ctap2StatusCode::CTAP2_ERR_INVALID_CBOR)?;
let rp_id = extract_text_string(ok_or_missing(map.remove(&RpId.into()))?)?;
let user_handle = extract_byte_string(ok_or_missing(map.remove(&UserHandle.into()))?)?;
let other_ui = map
.remove(&OtherUi.into())
.map(extract_text_string)
.transpose()?;
let cred_random = map
.remove(&CredRandom.into())
.map(extract_byte_string)
.transpose()?;
let cred_protect_policy = map
.remove(&CredProtectPolicy.into())
let rp_id = extract_text_string(ok_or_missing(rp_id)?)?;
let user_handle = extract_byte_string(ok_or_missing(user_handle)?)?;
let other_ui = other_ui.map(extract_text_string).transpose()?;
let cred_random = cred_random.map(extract_byte_string).transpose()?;
let cred_protect_policy = cred_protect_policy
.map(CredentialProtectionPolicy::try_from)
.transpose()?;
// We don't return whether there were unknown fields in the CBOR value. This means that