microg/GmsCore · error · IllegalArgumentException

Missing package name

Error message

Missing package name

What it means

LocationSharingReporterApiService.handleServiceRequest throws IllegalArgumentException("Missing package name") when PackageUtils.getAndCheckCallingPackage returns null — i.e. the calling package could not be resolved or does not match the declared packageName in the GetServiceRequest.

Source

Thrown at play-services-core/src/main/kotlin/com/google/android/gms/locationsharingreporter/service/LocationSharingReporterApiService.kt:74

private const val TAG = "LocationSharingReporter"
val FEATURES = arrayOf(
        Feature("LOCATION_SHARING_REPORTER", 2),
        Feature("LOCATION_SHARING_REPORTER_SYNC", 1),
        Feature("PERIODIC_LOCATION_SHARING_REPORTER", 1),
        Feature("START_LOCATION_REPORTING", 1),
        Feature("STOP_LOCATION_REPORTING", 1),
        Feature("GET_REPORTING_ISSUES", 1),
        Feature("UPDATE_NOTICE_STATE", 1),
        Feature("LOCATION_SHARING", 1),
)

class LocationSharingReporterApiService : BaseService(TAG, GmsService.LOCATION_SHARING_REPORTER) {

    override fun handleServiceRequest(callback: IGmsCallbacks, request: GetServiceRequest, service: GmsService?) {
        Log.d(TAG, "handleServiceRequest: $request")
        val callingPackageName = PackageUtils.getAndCheckCallingPackage(this, request.packageName)
                ?: throw IllegalArgumentException("Missing package name")
        PackageUtils.assertGooglePackagePermission(this, GooglePackagePermission.REPORTING)
        ProfileManager.ensureInitialized(this)
        callback.onPostInitCompleteWithConnectionInfo(
                CommonStatusCodes.SUCCESS,
                LocationSharingReporterApiServiceImpl(this, lifecycle).asBinder(),
                ConnectionInfo().apply { features = FEATURES }
        )
    }

    override fun onDestroy() {
        Log.d(TAG, "onDestroy: ")
        super.onDestroy()
    }
}

class LocationSharingReporterApiServiceImpl(
        val context: Context,
        override val lifecycle: Lifecycle

View on GitHub (pinned to 157c9d86ac)

Solutions

1. Ensure the client passes its own package name in GetServiceRequest.packageName when connecting
2. Update the client's play-services location library to a version that sets packageName correctly
3. Check that the calling app is properly installed and its UID resolves to a package
4. Wrap service binding in error handling; the IllegalArgumentException aborts the connection by design

Example fix

// before
val request = GetServiceRequest().apply { /* packageName not set */ }
// after
val request = GetServiceRequest().apply { packageName = context.packageName }

val request = GetServiceRequest().apply { packageName = context.packageName }
require(request.packageName?.isNotBlank() == true) { "packageName must be set" }

try {
    bindServiceWithRequest(request)
} catch (e: IllegalArgumentException) {
    Log.w(TAG, "service request rejected", e)
}

When it happens

Trigger: A client binds to the location sharing reporter GMS service with a GetServiceRequest whose packageName is null/empty, or the calling UID has no resolvable package (spoofed/mismatched request).

Common situations: Misconfigured client library versions sending an unset packageName, or malicious/broken apps impersonating another package when binding to microG services.

Understand the failure class

Background: "missing required argument" and "the following required arguments were not provided": what required-argument errors mean and how to fix them — this error's family across 20 libraries.

Related errors

• Missing package name
• deleteAll was set to true but keys were also provided
• Element in keys cannot be null or empty
• deleteAll=true but keys are provided
• retrieveAll was set to true but other constraint(s) was also

AI-assisted analysis of microg/GmsCore@157c9d86ac (2026-09-06). Data as JSON: /api/errors/ce1cf749419a93ce. Report an issue: GitHub.