def wrapped(namespace_name, repo_name, *args, **kwargs):
logger.debug(
"Checking permission %s for repo: %s/%s",
permission_class,
namespace_name,
repo_name,
)
permission = permission_class(namespace_name, repo_name)
if permission.can():
return func(namespace_name, repo_name, *args, **kwargs)
repository = namespace_name + "/" + repo_name
if allow_public:
repository_ref = registry_model.lookup_repository(
namespace_name, repo_name)
if repository_ref is None or not repository_ref.is_public:
raise Unauthorized(repository=repository, scopes=scopes)
if repository_ref.kind != "image":
msg = (
"This repository is for managing %s and not container images."
% repository_ref.kind)
raise Unsupported(detail=msg)
if repository_ref.is_public:
if not features.ANONYMOUS_ACCESS:
raise Unauthorized(repository=repository,
scopes=scopes)
return func(namespace_name, repo_name, *args, **kwargs)
raise Unauthorized(repository=repository, scopes=scopes)
def generate_registry_jwt(auth_result):
"""
This endpoint will generate a JWT conforming to the Docker Registry v2 Auth Spec:
https://docs.docker.com/registry/spec/auth/token/
"""
audience_param = request.args.get("service")
logger.debug("Request audience: %s", audience_param)
scope_params = request.args.getlist("scope") or []
logger.debug("Scope request: %s", scope_params)
auth_header = request.headers.get("authorization", "")
auth_credentials_sent = bool(auth_header)
# Load the auth context and verify thatg we've directly received credentials.
has_valid_auth_context = False
if get_authenticated_context():
has_valid_auth_context = not get_authenticated_context().is_anonymous
if auth_credentials_sent and not has_valid_auth_context:
# The auth credentials sent for the user are invalid.
raise InvalidLogin(auth_result.error_message)
if not has_valid_auth_context and len(scope_params) == 0:
# In this case, we are doing an auth flow, and it's not an anonymous pull.
logger.debug("No user and no token sent for empty scope list")
raise Unauthorized()
# Build the access list for the authenticated context.
access = []
scope_results = []
for scope_param in scope_params:
scope_result = _authorize_or_downscope_request(scope_param,
has_valid_auth_context)
if scope_result is None:
continue
scope_results.append(scope_result)
access.append({
"type": "repository",
"name": scope_result.registry_and_repo,
"actions": scope_result.actions,
})
# Issue user events.
user_event_data = {
"action": "login",
}
# Set the user event data for when authed.
if len(scope_results) > 0:
if "push" in scope_results[0].actions:
user_action = "push_start"
elif "pull" in scope_results[0].actions:
user_action = "pull_start"
else:
user_action = "login"
user_event_data = {
"action": user_action,
"namespace": scope_results[0].namespace,
"repository": scope_results[0].repository,
}
# Send the user event.
if get_authenticated_user() is not None:
event = userevents.get_event(get_authenticated_user().username)
event.publish_event_data("docker-cli", user_event_data)
# Build the signed JWT.
tuf_roots = {
"%s/%s" % (scope_result.namespace, scope_result.repository):
scope_result.tuf_root
for scope_result in scope_results
}
context, subject = build_context_and_subject(get_authenticated_context(),
tuf_roots=tuf_roots)
token = generate_bearer_token(audience_param, subject, context, access,
TOKEN_VALIDITY_LIFETIME_S, instance_keys)
return jsonify({"token": token})
def _authorize_or_downscope_request(scope_param, has_valid_auth_context):
# TODO: The complexity of this function is difficult to follow and maintain. Refactor/Cleanup.
if len(scope_param) == 0:
if not has_valid_auth_context:
# In this case, we are doing an auth flow, and it's not an anonymous pull.
logger.debug("No user and no token sent for empty scope list")
raise Unauthorized()
return None
match = _get_scope_regex().match(scope_param)
if match is None:
logger.debug("Match: %s", match)
logger.debug("len: %s", len(scope_param))
logger.warning("Unable to decode repository and actions: %s",
scope_param)
raise InvalidRequest("Unable to decode repository and actions: %s" %
scope_param)
logger.debug("Match: %s", match.groups())
registry_and_repo = match.group(1)
namespace_and_repo = match.group(2)
requested_actions = match.group(3).split(",")
lib_namespace = app.config["LIBRARY_NAMESPACE"]
namespace, reponame = parse_namespace_repository(namespace_and_repo,
lib_namespace)
# Ensure that we are never creating an invalid repository.
if not REPOSITORY_NAME_REGEX.match(reponame):
logger.debug("Found invalid repository name in auth flow: %s",
reponame)
if len(namespace_and_repo.split("/")) > 1:
msg = "Nested repositories are not supported. Found: %s" % namespace_and_repo
raise NameInvalid(message=msg)
raise NameInvalid(message="Invalid repository name: %s" %
namespace_and_repo)
# Ensure the namespace is enabled.
if registry_model.is_existing_disabled_namespace(namespace):
msg = "Namespace %s has been disabled. Please contact a system administrator." % namespace
raise NamespaceDisabled(message=msg)
final_actions = []
repository_ref = registry_model.lookup_repository(namespace, reponame)
repo_is_public = repository_ref is not None and repository_ref.is_public
invalid_repo_message = ""
if repository_ref is not None and repository_ref.kind != "image":
invalid_repo_message = (
"This repository is for managing %s " +
"and not container images.") % repository_ref.kind
# Ensure the repository is not marked for deletion.
if repository_ref is not None and repository_ref.state == RepositoryState.MARKED_FOR_DELETION:
raise Unknown(message="Unknown repository")
if "push" in requested_actions:
# Check if there is a valid user or token, as otherwise the repository cannot be
# accessed.
if has_valid_auth_context:
user = get_authenticated_user()
# Lookup the repository. If it exists, make sure the entity has modify
# permission. Otherwise, make sure the entity has create permission.
if repository_ref:
if ModifyRepositoryPermission(namespace, reponame).can():
if repository_ref is not None and repository_ref.kind != "image":
raise Unsupported(message=invalid_repo_message)
# Check for different repository states.
if repository_ref.state == RepositoryState.NORMAL:
# In NORMAL mode, if the user has permission, then they can push.
final_actions.append("push")
elif repository_ref.state == RepositoryState.MIRROR:
# In MIRROR mode, only the mirroring robot can push.
mirror = model.repo_mirror.get_mirror(
repository_ref.id)
robot = mirror.internal_robot if mirror is not None else None
if robot is not None and user is not None and robot == user:
assert robot.robot
final_actions.append("push")
else:
logger.debug(
"Repository %s/%s push requested for non-mirror robot %s: %s",
namespace,
reponame,
robot,
user,
)
elif repository_ref.state == RepositoryState.READ_ONLY:
# No pushing allowed in read-only state.
pass
else:
logger.warning(
"Unknown state for repository %s: %s",
repository_ref,
repository_ref.state,
)
else:
logger.debug("No permission to modify repository %s/%s",
namespace, reponame)
else:
# TODO: Push-to-create functionality should be configurable
if CreateRepositoryPermission(
namespace).can() and user is not None:
logger.debug("Creating repository: %s/%s", namespace,
reponame)
repository_ref = RepositoryReference.for_repo_obj(
model.repository.create_repository(
namespace, reponame, user))
final_actions.append("push")
else:
logger.debug("No permission to create repository %s/%s",
namespace, reponame)
if "pull" in requested_actions:
# Grant pull if the user can read the repo or it is public.
if ReadRepositoryPermission(namespace,
reponame).can() or repo_is_public:
if repository_ref is not None and repository_ref.kind != "image":
raise Unsupported(message=invalid_repo_message)
final_actions.append("pull")
else:
logger.debug("No permission to pull repository %s/%s", namespace,
reponame)
if "*" in requested_actions:
# Grant * user is admin
if AdministerRepositoryPermission(namespace, reponame).can():
if repository_ref is not None and repository_ref.kind != "image":
raise Unsupported(message=invalid_repo_message)
if repository_ref and repository_ref.state in (
RepositoryState.MIRROR,
RepositoryState.READ_ONLY,
):
logger.debug("No permission to administer repository %s/%s",
namespace, reponame)
else:
assert repository_ref.state == RepositoryState.NORMAL
final_actions.append("*")
else:
logger.debug("No permission to administer repository %s/%s",
namespace, reponame)
# Final sanity checks.
if "push" in final_actions:
assert repository_ref.state != RepositoryState.READ_ONLY
if "*" in final_actions:
assert repository_ref.state == RepositoryState.NORMAL
return scopeResult(
actions=final_actions,
namespace=namespace,
repository=reponame,
registry_and_repo=registry_and_repo,
tuf_root=_get_tuf_root(repository_ref, namespace, reponame),
)