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import { isValidDomain } from './isValidDomain';
import { WebAuthnError } from './structs';
/**
* Attempt to intuit _why_ an error was raised after calling `navigator.credentials.create()`
*/
export function identifyRegistrationError({
error,
options,
}: {
error: Error;
options: CredentialCreationOptions;
}): WebAuthnError | Error {
const { publicKey } = options;
if (!publicKey) {
throw Error('options was missing required publicKey property');
}
if (error.name === 'AbortError') {
if (options.signal === new AbortController().signal) {
// https://www.w3.org/TR/webauthn-2/#sctn-createCredential (Step 16)
return new WebAuthnError('Registration ceremony was sent an abort signal');
}
} else if (error.name === 'ConstraintError') {
if (publicKey.authenticatorSelection?.requireResidentKey === true) {
// https://www.w3.org/TR/webauthn-2/#sctn-op-make-cred (Step 4)
return new WebAuthnError(
'Discoverable credentials were required but no available authenticator supported it (ConstraintError)',
);
} else if (publicKey.authenticatorSelection?.userVerification === 'required') {
// https://www.w3.org/TR/webauthn-2/#sctn-op-make-cred (Step 5)
return new WebAuthnError(
'User verification was required but no available authenticator supported it (ConstraintError)',
);
}
} else if (error.name === 'InvalidStateError') {
// https://www.w3.org/TR/webauthn-2/#sctn-createCredential (Step 20)
// https://www.w3.org/TR/webauthn-2/#sctn-op-make-cred (Step 3)
return new WebAuthnError('The authenticator was previously registered (InvalidStateError)');
} else if (error.name === 'NotAllowedError') {
// https://www.w3.org/TR/webauthn-2/#sctn-createCredential (Step 20)
// https://www.w3.org/TR/webauthn-2/#sctn-createCredential (Step 21)
return new WebAuthnError(
'User clicked cancel, or the registration ceremony timed out (NotAllowedError)',
);
} else if (error.name === 'NotSupportedError') {
const validPubKeyCredParams = publicKey.pubKeyCredParams.filter(
param => param.type === 'public-key',
);
if (validPubKeyCredParams.length === 0) {
// https://www.w3.org/TR/webauthn-2/#sctn-createCredential (Step 10)
return new WebAuthnError(
'No entry in pubKeyCredParams was of type "public-key" (NotSupportedError)',
);
}
// https://www.w3.org/TR/webauthn-2/#sctn-op-make-cred (Step 2)
return new WebAuthnError(
'No available authenticator supported any of the specified pubKeyCredParams algorithms (NotSupportedError)',
);
} else if (error.name === 'SecurityError') {
const effectiveDomain = window.location.hostname;
if (!isValidDomain(effectiveDomain)) {
// https://www.w3.org/TR/webauthn-2/#sctn-createCredential (Step 7)
return new WebAuthnError(`${window.location.hostname} is an invalid domain (SecurityError)`);
} else if (publicKey.rp.id !== effectiveDomain) {
// https://www.w3.org/TR/webauthn-2/#sctn-createCredential (Step 8)
return new WebAuthnError(
`The RP ID "${publicKey.rp.id}" is invalid for this domain (SecurityError)`,
);
}
} else if (error.name === 'TypeError') {
if (publicKey.user.id.byteLength < 1 || publicKey.user.id.byteLength > 64) {
// https://www.w3.org/TR/webauthn-2/#sctn-createCredential (Step 5)
return new WebAuthnError('User ID was not between 1 and 64 characters (TypeError)');
}
} else if (error.name === 'UnknownError') {
// https://www.w3.org/TR/webauthn-2/#sctn-op-make-cred (Step 1)
// https://www.w3.org/TR/webauthn-2/#sctn-op-make-cred (Step 8)
return new WebAuthnError(
'The authenticator was unable to process the specified options, or could not create a new credential (UnknownError)',
);
}
return error;
}
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