64 lines
1.9 KiB
Python
64 lines
1.9 KiB
Python
import click
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from googleapiclient.errors import Error
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from googleapiclient import discovery
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from oauth2client.client import GoogleCredentials
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credentials = GoogleCredentials.get_application_default()
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iam_service = discovery.build("iam", "v1", credentials=credentials)
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SENSITIVE_PERMISSIONS = {
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"resourcemanager.projects.setIamPolicy",
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"resourcemanager.folders.setIamPolicy",
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"resourcemanager.organizations.setIamPolicy",
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}
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def get_role_permissions(role):
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if role.startswith("roles/"):
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endpoint = iam_service.roles()
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elif role.startswith("projects/"):
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endpoint = iam_service.projects().roles()
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elif role.startswith("organizations/"):
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endpoint = iam_service.organizations().roles()
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else:
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raise Exception(f"Invalid role {role}")
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response = endpoint.get(name=role).execute()
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permissions = response.get("includedPermissions")
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return permissions
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@click.command()
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@click.argument("file", type=click.File("r"))
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def main(file):
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"""Verify that the set of GCP roles in FILE does not include the
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permission SetIamPolicy at project, folder or organization level
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This program authenticates against GCP using default application
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credentials to query project and organization level roles.
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"""
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clean_roles = [x.rstrip(" \n") for x in file]
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roles = (x for x in clean_roles if x)
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allok = True
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for role in roles:
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try:
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permissions = set(get_role_permissions(role))
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except Error as e:
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print(f"WARNING: can't read {role}: {e}")
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allok = False
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else:
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matched_sensitive_permissions = SENSITIVE_PERMISSIONS & permissions
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if matched_sensitive_permissions:
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print(f"WARNING: {role} contains {matched_sensitive_permissions}")
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allok = False
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else:
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print(f"{role} ok")
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exit(0 if allok else 1)
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if __name__ == "__main__":
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main()
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