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feat: kadena subdomains allowed #213

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Merged
mschead merged 1 commit into from
Mar 10, 2025
Merged

feat: kadena subdomains allowed #213

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1 change: 1 addition & 0 deletions indexer/.env.template
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@ KADENA_GRAPHQL_API_URL=localhost
KADENA_GRAPHQL_API_PORT=3001

API_GATEWAY_URL=https://api.mainnet.kadindexer.io
API_KADENA_URL=https://kadena.io

DB_USERNAME=postgres
DB_PASSWORD=password
Expand Down
33 changes: 22 additions & 11 deletions indexer/src/kadena-server/server.ts
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Expand Up @@ -43,6 +43,7 @@ const KADENA_GRAPHQL_API_PORT = getRequiredEnvString('KADENA_GRAPHQL_API_PORT');

const ALLOWED_ORIGINS = [
getRequiredEnvString('API_GATEWAY_URL'),
getRequiredEnvString('API_KADENA_URL'),
`http://localhost:${KADENA_GRAPHQL_API_PORT}`,
];

Expand Down Expand Up @@ -123,6 +124,23 @@ const ipFilterMiddleware = (req: Request, res: Response, next: NextFunction) =>
}
};

const isAllowedOrigin = (origin: string): boolean => {
try {
const originUrl = new URL(origin);
return ALLOWED_ORIGINS.some(allowed => {
const allowedUrl = new URL(allowed);
// Check if it's an exact match
if (originUrl.origin === allowedUrl.origin) return true;
// Check if it's a subdomain (only for kadena.io)
if (allowedUrl.hostname === 'kadena.io' && originUrl.hostname.endsWith('.kadena.io'))
return true;
return false;
});
} catch {
return false;
}
};

export async function useKadenaGraphqlServer() {
const app = express();
const httpServer = http.createServer(app);
Expand Down Expand Up @@ -219,15 +237,10 @@ export async function useKadenaGraphqlServer() {
if (!origin || origin === 'null') {
return callback(false, 400, 'No origin');
}
try {
const url = new URL(origin);
if (ALLOWED_ORIGINS.includes(url.origin)) {
return callback(true);
}
return callback(false, 403, 'Forbidden');
} catch {
return callback(false, 400, 'Invalid origin');
if (isAllowedOrigin(origin)) {
return callback(true);
}
return callback(false, 403, 'Forbidden');
},
});

Expand Down Expand Up @@ -260,8 +273,7 @@ export async function useKadenaGraphqlServer() {
}

try {
const url = new URL(origin);
if (ALLOWED_ORIGINS.includes(url.origin)) {
if (isAllowedOrigin(origin)) {
return callback(null, true);
}
return callback(new Error(`Origin ${origin} not allowed by CORS`));
Expand All @@ -271,7 +283,6 @@ export async function useKadenaGraphqlServer() {
},
methods: ['POST', 'OPTIONS'],
allowedHeaders: ['Content-Type', 'Authorization'],
// When using credentials: true, you cannot use * for Access-Control-Allow-Origin. You must specify exact origins.
credentials: true,
}),
expressMiddleware(server, {
Expand Down