Ensuring Accurate Identity Updates for Multi-Provider Authentication in ESHOPMAN

Ensuring Accurate Identity Updates for Multi-Provider Authentication in ESHOPMAN

At Move My Store, we're dedicated to empowering ESHOPMAN users with the knowledge and tools for seamless headless commerce experiences. ESHOPMAN, built on Node.js/TypeScript and integrated deeply with HubSpot for storefront management, relies on robust authentication to secure your customer data and interactions. A core strength of ESHOPMAN is its flexibility in handling various authentication providers, allowing for diverse login methods and enhanced user security.

Recently, our community identified an important nuance within ESHOPMAN's authentication module concerning how provider identities are updated, especially in scenarios where a single user account (auth identity) is linked to multiple instances of the same authentication provider.

The Challenge: Misdirected Identity Updates

The issue arises when an ESHOPMAN user account holds several provider identities from the same service. A common example is a WebAuthn/passkey provider, where a user might have multiple passkeys registered (e.g., one from their phone, another from their laptop) under the same ESHOPMAN account. When an authentication provider attempts to update a specific provider identity—for instance, incrementing a passkey's counter after a successful login—the AuthIdentityProviderService.update(entity_id, data) method might inadvertently update the wrong identity.

Specifically, the service, which is passed to authentication providers, was observed to correctly look up the overall authentication identity by { entity_id, provider }. However, when it came to selecting the individual provider identity to update within that authentication identity, the logic would only filter by provider type. This meant it would consistently pick the first provider identity of that type, ignoring the specific entity_id that was intended for the update. The consequence? Data for the incorrect passkey (or any other multi-instance provider) would be modified, leading to inconsistencies and potential operational issues.

Why This Matters for Your ESHOPMAN Storefront

For ESHOPMAN merchants and developers leveraging advanced authentication methods or custom providers, accurate identity management is paramount. Misdirected updates can lead to:

• Data Inconsistencies: Critical metadata, like passkey counters, being updated for the wrong credential.
• User Experience Issues: Unexpected behavior or failures in authentication flows for users with multiple credentials.
• Operational Overhead: Debugging and resolving issues stemming from incorrect identity states.

The ESHOPMAN Community Solution

Thanks to vigilant community members, the root cause was identified within the ESHOPMAN authentication module's Node.js/TypeScript codebase. The fix is elegant and precise, ensuring that the correct provider identity is targeted for updates.

The core of the solution involves enhancing the lookup logic to include the entity_id when finding the specific provider identity. Here’s the suggested modification:

const providerIdentityData = authIdentities[0].provider_identities.find(
  (pi) => pi.provider === provider && pi.entity_id === entity_id
)

This small but crucial change ensures that the system accurately identifies and updates the provider identity whose entity_id precisely matches the one passed to the update function. Additionally, a secondary adjustment is needed in the response serialization to ensure only the replaced entry is handled correctly, rather than inadvertently dropping all same-provider identities.

Immediate Workaround for ESHOPMAN Developers

While the official fix is integrated into ESHOPMAN, developers needing an immediate solution can implement a workaround. Instead of relying on authIdentityProviderService.update from within the provider, you can directly update the specific provider identity by its unique id. This can be achieved by calling authModule.updateProviderIdentities([{ id, provider_metadata }]), typically within a custom route middleware after the authentication process.

Strengthening ESHOPMAN's Headless Capabilities

This community insight underscores the power of ESHOPMAN's flexible architecture and the active engagement of its developer community. By addressing such specific technical nuances, we collectively enhance the platform's robustness, ensuring that your ESHOPMAN storefront—deployed via HubSpot CMS and managed through the HubSpot app—continues to deliver secure and seamless headless commerce experiences. We encourage all ESHOPMAN developers to stay engaged and contribute to our growing knowledge base.