Auth: expose APP_CERT action for AppCert service - #3815
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Sep 21, 2026
Port the alternate com.google.android.gms.auth.APP_CERT intent filter from @paulcakeface microg#3815 so Messages/clients that bind that action can reach AppCert. Constellation SpatulaHeaderProvider tries the classic be.appcert action then APP_CERT. Add AppCertManager Spatula fallback unit coverage aligned with microg#3808.
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Summary
Expose the modern
com.google.android.gms.auth.APP_CERTservice action on the existingAppCertService, alongside the legacycom.google.android.gms.auth.be.appcert.AppCertServiceaction.This is a manifest-only compatibility alias. No AppCert implementation or Binder behaviour changes.
Why
While investigating RCS compatibility for #2994, the modern
APP_CERTaction was found to be a real service-discovery gap: current microG advertised only the legacy action.On a locked, non-root Pixel 3 running current Google Messages RC02:
org.microg.gms.auth.appcert.AppCertService;com.google.android.gms.auth.APP_CERTreturned no matching service;AppCertService.AppCertServiceitself is unchanged and its existing Binder is reused.Validation
master(4c74e5acb79479004428be755547432294639878at qualification time);:play-services-core:assembleMapboxDefaultReleasebuild passed (BUILD SUCCESSFUL in 7m 25s);This intentionally does not make any broader claim about completing RCS provisioning; it only closes the AppCert service-discovery compatibility gap.