Write policy analysis to Cloud Storage

gcloud

Before using any of the command data below, make the following replacements:

• RESOURCE_TYPE: The type of the resource that you want to scope your search to. Only IAM allow policies attached to this resource and to its descendants will be analyzed. Use the value project, folder, or organization.
• RESOURCE_ID: The ID of the Google Cloud project, folder, or organization that you want to scope your search to. Only IAM allow policies attached to this resource and to its descendants will be analyzed. Project IDs are alphanumeric strings, like my-project. Folder and organization IDs are numeric, like 123456789012.
• PRINCIPAL: The principal whose access you want to analyze, in the form PRINCIPAL_TYPE:ID—for example, user:my-user@example.com. For a full list of the principal types, see Principal identifiers.
• PERMISSIONS: A comma-separated list of the permissions that you want to check for—for example, compute.instances.get,compute.instances.start. If you list multiple permissions, Policy Analyzer will check for any of the permissions listed.
• STORAGE_OBJECT_URI: The unique resource identifier of the Cloud Storage object that you want to export analysis results to, in the form gs://BUCKET_NAME/OBJECT_NAME—for example, gs://my-bucket/analysis.json.

Execute the gcloud asset analyze-iam-policy-longrunning command:

gcloud asset analyze-iam-policy-longrunning --RESOURCE_TYPE=RESOURCE_ID \
    --full-resource-name=FULL_RESOURCE_NAME \
    --identity=PRINCIPAL \
    --permissions='PERMISSIONS' \
    --gcs-output-path=STORAGE_OBJECT_URI

gcloud asset analyze-iam-policy-longrunning --RESOURCE_TYPE=RESOURCE_ID `
    --full-resource-name=FULL_RESOURCE_NAME `
    --identity=PRINCIPAL `
    --permissions='PERMISSIONS' `
    --gcs-output-path=STORAGE_OBJECT_URI

gcloud asset analyze-iam-policy-longrunning --RESOURCE_TYPE=RESOURCE_ID ^
    --full-resource-name=FULL_RESOURCE_NAME ^
    --identity=PRINCIPAL ^
    --permissions='PERMISSIONS' ^
    --gcs-output-path=STORAGE_OBJECT_URI

You should receive a response similar to the following:

Analyze IAM Policy in progress.
Use [gcloud asset operations describe projects/my-project/operations/AnalyzeIamPolicyLongrunning/1195028485971902504711950280359719028666] to check the status of the operation.

REST

To analyze an IAM allow policy and export the results to Cloud Storage, use the Cloud Asset Inventory API's analyzeIamPolicyLongrunning method.

Before using any of the request data, make the following replacements:

• RESOURCE_TYPE: The type of the resource that you want to scope your search to. Only IAM allow policies attached to this resource and to its descendants will be analyzed. Use the value projects, folders, or organizations.
• RESOURCE_ID: The ID of the Google Cloud project, folder, or organization that you want to scope your search to. Only IAM allow policies attached to this resource and to its descendants will be analyzed. Project IDs are alphanumeric strings, like my-project. Folder and organization IDs are numeric, like 123456789012.
• FULL_RESOURCE_NAME: Optional. The full resource name of the resource that you want to analyze access for. For a list of full resource name formats, see Resource name format.
• PRINCIPAL: Optional. The principal whose access you want to analyze, in the form PRINCIPAL_TYPE:ID—for example, user:my-user@example.com. For a full list of the principal types, see Principal identifiers.
• PERMISSION_1, PERMISSION_2... PERMISSION_N: Optional. The permissions that you want to check for—for example, compute.instances.get. If you list multiple permissions, Policy Analyzer will check for any of the permissions listed.
• STORAGE_OBJECT_URI: The unique resource identifier of the Cloud Storage object that you want to export analysis results to, in the form gs://BUCKET_NAME/OBJECT_NAME—for example, gs://my-bucket/analysis.json.

HTTP method and URL:

POST https://cloudasset.googleapis.com/v1/RESOURCE_TYPE/RESOURCE_ID:analyzeIamPolicyLongrunning

Request JSON body:

{
  "analysisQuery": {
    "resourceSelector": {
      "fullResourceName": "FULL_RESOURCE_NAME"
    },
    "identitySelector": {
      "identity": "PRINCIPAL"
    },
    "accessSelector": {
      "permissions": [
        "PERMISSION_1",
        "PERMISSION_2",
        "PERMISSION_N"
      ]
    },
    "outputConfig": {
      "gcsDestination": {
        "uri": "STORAGE_OBJECT_URI"
      }
    }
  }
}

To send your request, expand one of these options:

curl -X POST \
     -H "Authorization: Bearer $(gcloud auth print-access-token)" \
     -H "Content-Type: application/json; charset=utf-8" \
     -d @request.json \
     "https://cloudasset.googleapis.com/v1/RESOURCE_TYPE/RESOURCE_ID:analyzeIamPolicyLongrunning"

$cred = gcloud auth print-access-token
$headers = @{ "Authorization" = "Bearer $cred" }

Invoke-WebRequest `
    -Method POST `
    -Headers $headers `
    -ContentType: "application/json; charset=utf-8" `
    -InFile request.json `
    -Uri "https://cloudasset.googleapis.com/v1/RESOURCE_TYPE/RESOURCE_ID:analyzeIamPolicyLongrunning" | Select-Object -Expand Content

You should receive a JSON response similar to the following:

{
  "name": "projects/my-project/operations/AnalyzeIamPolicyLongrunning/1206385342502762515812063858425027606003",
  "metadata": {
    "@type": "type.googleapis.com/google.cloud.asset.v1.AnalyzeIamPolicyLongrunningMetadata",
    "createTime": "2022-04-12T21:31:10.753173929Z"
  }
}