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crypto: Don't panic if we don't have the keys to generate a QR code

master
Damir Jelić 2021-07-01 10:27:45 +02:00
parent 9052843acb
commit db0843a47a
1 changed files with 77 additions and 37 deletions
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114
matrix_sdk_crypto/src/verification/requests.rs
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@ -796,8 +796,6 @@ impl RequestState<Ready> {
&self,
we_started: bool,
) -> Result<Option<QrVerification>, CryptoStoreError> {
// TODO return an error explaining why we can't generate a QR code?
// If we didn't state that we support showing QR codes or if the other
// side doesn't support scanning QR codes bail early.
if !self.state.our_methods.contains(&VerificationMethod::QrCodeShowV1)
@ -830,44 +828,86 @@ impl RequestState<Ready> {
let verification = if let Some(identity) = &identites.identity_being_verified {
match &identity {
UserIdentities::Own(i) => {
if identites.can_sign_devices().await {
Some(QrVerification::new_self(
self.store.clone(),
self.flow_id.as_ref().to_owned(),
i.master_key().get_first_key().unwrap().to_owned(),
identites
.other_device()
.get_key(DeviceKeyAlgorithm::Ed25519)
.unwrap()
.to_owned(),
identites,
we_started,
))
if let Some(master_key) = i.master_key().get_first_key() {
if identites.can_sign_devices().await {
if let Some(device_key) =
identites.other_device().get_key(DeviceKeyAlgorithm::Ed25519)
{
Some(QrVerification::new_self(
self.store.clone(),
self.flow_id.as_ref().to_owned(),
master_key.to_owned(),
device_key.to_owned(),
identites,
we_started,
))
} else {
warn!(
user_id = self.other_user_id.as_str(),
device_id = self.state.other_device_id.as_str(),
"Can't create a QR code, the other device \
doesn't have a valid device key"
);
None
}
} else {
Some(QrVerification::new_self_no_master(
self.account.clone(),
self.store.clone(),
self.flow_id.as_ref().to_owned(),
master_key.to_owned(),
identites,
we_started,
))
}
} else {
Some(QrVerification::new_self_no_master(
self.account.clone(),
self.store.clone(),
self.flow_id.as_ref().to_owned(),
i.master_key().get_first_key().unwrap().to_owned(),
identites,
we_started,
))
warn!(
user_id = self.other_user_id.as_str(),
device_id = self.state.other_device_id.as_str(),
"Can't create a QR code, our cross signing identity \
doesn't contain a valid master key"
);
None
}
}
UserIdentities::Other(i) => {
if let Some(other_master) = i.master_key().get_first_key() {
// TODO we can get the master key from the public
// identity if we don't have the private one and we
// trust the public one.
if let Some(own_master) = self
.private_cross_signing_identity
.master_public_key()
.await
.and_then(|m| m.get_first_key().map(|m| m.to_owned()))
{
Some(QrVerification::new_cross(
self.store.clone(),
self.flow_id.as_ref().to_owned(),
own_master,
other_master.to_owned(),
identites,
we_started,
))
} else {
warn!(
user_id = self.other_user_id.as_str(),
device_id = self.state.other_device_id.as_str(),
"Can't create a QR code, we don't trust our own \
master key"
);
None
}
} else {
warn!(
user_id = self.other_user_id.as_str(),
device_id = self.state.other_device_id.as_str(),
"Can't create a QR code, the user's identity \
doesn't have a valid master key"
);
None
}
}
UserIdentities::Other(i) => Some(QrVerification::new_cross(
self.store.clone(),
self.flow_id.as_ref().to_owned(),
self.private_cross_signing_identity
.master_public_key()
.await
.unwrap()
.get_first_key()
.unwrap()
.to_owned(),
i.master_key().get_first_key().unwrap().to_owned(),
identites,
we_started,
)),
}
} else {
warn!(