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Add useful common policies to base.py 

These common check strings are useful for implementing consistent
policy checks across OpenStack by adhering to a common persona. This
also includes support for a default read-only role.

Subsequent changes will update the policies to use these check strings
where applicable.

Change-Id: Ica9db41939e17fcd67b97dce5191e75bfb396330
This commit is contained in:
Lance Bragstad 2020-11-23 19:20:57 +00:00 committed by Nicolas Bock
parent 11d03924e7
commit f4d35c02df
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1 changed files with 34 additions and 0 deletions
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34
designate/common/policies/base.py
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@ -25,6 +25,40 @@ RULE_ZONE_TRANSFER = "rule:admin_or_owner OR tenant:%(target_tenant_id)s " \
"OR None:%(target_tenant_id)s"
RULE_ANY = "@"
# Generic policy check string for system administrators. These are the people
# who need the highest level of authorization to operate the deployment.
# They're allowed to create, read, update, or delete any system-specific
# resource. They can also operate on project-specific resources where
# applicable (e.g., cleaning up blacklists)
SYSTEM_ADMIN = 'role:admin and system_scope:all'
# Generic policy check string for read-only access to system-level resources.
# This persona is useful for someone who needs access for auditing or even
# support. These uses are also able to view project-specific resources where
# applicable (e.g., listing all pools)
SYSTEM_READER = 'role:reader and system_scope:all'
# This check string is reserved for actions that require the highest level of
# authorization on a project or resources within the project
PROJECT_ADMIN = 'role:admin and project_id:%(project_id)s'
# This check string is the primary use case for typical end-users, who are
# working with resources that belong to a project (e.g., creating DNS zones)
PROJECT_MEMBER = 'role:member and project_id:%(project_id)s'
# This check string should only be used to protect read-only project-specific
# resources. It should not be used to protect APIs that make writable changes.
PROJECT_READER = 'role:reader and project_id:%(project_id)s'
# The following are common composite check strings that are useful for
# protecting APIs designed to operate with multiple scopes
SYSTEM_ADMIN_OR_PROJECT_MEMBER = (
'(' + SYSTEM_ADMIN + ') or (' + PROJECT_MEMBER + ')'
)
SYSTEM_OR_PROJECT_READER = (
'(' + SYSTEM_READER + ') or (' + PROJECT_READER + ')'
)
rules = [
policy.RuleDefault(
name="admin",