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D6033.diff
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diff --git a/keyserver/src/responders/user-responders.js b/keyserver/src/responders/user-responders.js
--- a/keyserver/src/responders/user-responders.js
+++ b/keyserver/src/responders/user-responders.js
@@ -1,7 +1,7 @@
// @flow
import invariant from 'invariant';
-import { SiweMessage } from 'siwe';
+import { ErrorTypes, SiweMessage } from 'siwe';
import t from 'tcomb';
import bcrypt from 'twin-bcrypt';
@@ -309,7 +309,7 @@
async function siweAuthResponder(viewer: Viewer, input: any): Promise<boolean> {
await validateInput(viewer, siweAuthRequestInputValidator, input);
const request: SIWEAuthRequest = input;
- const { message } = request;
+ const { message, signature } = request;
// 1. Ensure that `message` is a well formed Comm SIWE Auth message.
const siweMessage: SIWEMessage = new SiweMessage(message);
@@ -327,6 +327,24 @@
throw new ServerError('invalid_parameters');
}
+ // 3. Validate SIWEMessage signature and handle possible errors.
+ try {
+ await siweMessage.validate(signature);
+ } catch (error) {
+ if (error === ErrorTypes.EXPIRED_MESSAGE) {
+ // Thrown when the `expirationTime` is present and in the past.
+ throw new ServerError('expired_message', { status: 400 });
+ } else if (error === ErrorTypes.INVALID_SIGNATURE) {
+ // Thrown when the `validate()` function can't verify the message.
+ throw new ServerError('invalid_signature', { status: 400 });
+ } else if (error === ErrorTypes.MALFORMED_SESSION) {
+ // Thrown when some required field is missing.
+ throw new ServerError('malformed_session', { status: 400 });
+ } else {
+ throw new ServerError('unknown_error', { status: 500 });
+ }
+ }
+
return false;
}
diff --git a/lib/types/siwe-types.js b/lib/types/siwe-types.js
--- a/lib/types/siwe-types.js
+++ b/lib/types/siwe-types.js
@@ -105,4 +105,5 @@
// This field will be removed in future releases and will rely on the
// message version.
+type?: 'Personal signature',
+ +validate: (signature: string, provider?: any) => Promise<SIWEMessage>,
};

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