v2: send proper scopes for authorization failures

Fixes #1278.

endpoints/v2/__init__.py

@@ -1,24 +1,24 @@
 import logging
 
-from flask import Blueprint, make_response, url_for, request, jsonify
 from functools import wraps
 from urlparse import urlparse
+
+from flask import Blueprint, make_response, url_for, request, jsonify
 from semantic_version import Spec
 
 import features
 
-from app import metric_queue
-from endpoints.decorators import anon_protect, anon_allowed
-from endpoints.v2.errors import V2RegistryException, Unauthorized
+from app import app, metric_queue
 from auth.auth_context import get_grant_context
 from auth.permissions import (ReadRepositoryPermission, ModifyRepositoryPermission,
                               AdministerRepositoryPermission)
-from data import model
-from app import app
-from util.http import abort
-from util.saas.metricqueue import time_blueprint
-from util.registry.dockerver import docker_version
 from auth.registry_jwt_auth import process_registry_jwt_auth, get_auth_headers
+from data import model
+from endpoints.decorators import anon_protect, anon_allowed
+from endpoints.v2.errors import V2RegistryException, Unauthorized
+from util.http import abort
+from util.registry.dockerver import docker_version
+from util.saas.metricqueue import time_blueprint
 
 logger = logging.getLogger(__name__)
 v2_bp = Blueprint('v2', __name__)
@@ -33,12 +33,12 @@ def handle_registry_v2_exception(error):
 
   response.status_code = error.http_status_code
   if response.status_code == 401:
-    response.headers.extend(get_auth_headers())
+    response.headers.extend(get_auth_headers(repository=error.repository, scopes=error.scopes))
   logger.debug('sending response: %s', response.get_data())
   return response
 
 
-def _require_repo_permission(permission_class, allow_public=False):
+def _require_repo_permission(permission_class, scopes=None, allow_public=False):
   def wrapper(func):
     @wraps(func)
     def wrapped(namespace_name, repo_name, *args, **kwargs):
@@ -49,14 +49,19 @@ def _require_repo_permission(permission_class, allow_public=False):
           (allow_public and
            model.repository.repository_is_public(namespace_name, repo_name))):
         return func(namespace_name, repo_name, *args, **kwargs)
-      raise Unauthorized()
+      repository = namespace_name + '/' + repo_name
+      raise Unauthorized(repository=repository, scopes=scopes)
     return wrapped
   return wrapper
 
 
-require_repo_read = _require_repo_permission(ReadRepositoryPermission, True)
-require_repo_write = _require_repo_permission(ModifyRepositoryPermission)
-require_repo_admin = _require_repo_permission(AdministerRepositoryPermission)
+require_repo_read = _require_repo_permission(ReadRepositoryPermission,
+                                             scopes=['pull'],
+                                             allow_public=True)
+require_repo_write = _require_repo_permission(ModifyRepositoryPermission,
+                                              scopes=['pull', 'push'])
+require_repo_admin = _require_repo_permission(AdministerRepositoryPermission,
+                                              scopes=['pull', 'push'])
 
 
 def get_input_stream(flask_request):
@@ -79,7 +84,7 @@ def route_show_if(value):
 
 @v2_bp.route('/')
 @route_show_if(features.ADVERTISE_V2)
-@process_registry_jwt_auth
+@process_registry_jwt_auth()
 @anon_allowed
 def v2_support_enabled():
   docker_ver = docker_version(request.user_agent.string)

endpoints/v2/blob.py

@@ -57,8 +57,8 @@ def _base_blob_fetch(namespace_name, repo_name, digest):
 
 
 @v2_bp.route(BLOB_DIGEST_ROUTE, methods=['HEAD'])
-@process_registry_jwt_auth
 @parse_repository_name()
+@process_registry_jwt_auth(scopes=['pull'])
 @require_repo_read
 @anon_protect
 @cache_control(max_age=31436000)
@@ -73,8 +73,8 @@ def check_blob_exists(namespace_name, repo_name, digest):
 
 
 @v2_bp.route(BLOB_DIGEST_ROUTE, methods=['GET'])
-@process_registry_jwt_auth
 @parse_repository_name()
+@process_registry_jwt_auth(scopes=['pull'])
 @require_repo_read
 @anon_protect
 @cache_control(max_age=31536000)
@@ -107,8 +107,8 @@ def _render_range(num_uploaded_bytes, with_bytes_prefix=True):
 
 
 @v2_bp.route('/<repopath:repository>/blobs/uploads/', methods=['POST'])
-@process_registry_jwt_auth
 @parse_repository_name()
+@process_registry_jwt_auth(scopes=['pull', 'push'])
 @require_repo_write
 @anon_protect
 def start_blob_upload(namespace_name, repo_name):
@@ -143,8 +143,8 @@ def start_blob_upload(namespace_name, repo_name):
 
 
 @v2_bp.route('/<repopath:repository>/blobs/uploads/<upload_uuid>', methods=['GET'])
-@process_registry_jwt_auth
 @parse_repository_name()
+@process_registry_jwt_auth(scopes=['pull'])
 @require_repo_write
 @anon_protect
 def fetch_existing_upload(namespace_name, repo_name, upload_uuid):
@@ -325,8 +325,8 @@ def _finish_upload(namespace_name, repo_name, upload_obj, expected_digest):
 
 
 @v2_bp.route('/<repopath:repository>/blobs/uploads/<upload_uuid>', methods=['PATCH'])
-@process_registry_jwt_auth
 @parse_repository_name()
+@process_registry_jwt_auth(scopes=['pull', 'push'])
 @require_repo_write
 @anon_protect
 def upload_chunk(namespace_name, repo_name, upload_uuid):
@@ -344,8 +344,8 @@ def upload_chunk(namespace_name, repo_name, upload_uuid):
 
 
 @v2_bp.route('/<repopath:repository>/blobs/uploads/<upload_uuid>', methods=['PUT'])
-@process_registry_jwt_auth
 @parse_repository_name()
+@process_registry_jwt_auth(scopes=['pull', 'push'])
 @require_repo_write
 @anon_protect
 def monolithic_upload_or_last_chunk(namespace_name, repo_name, upload_uuid):
@@ -364,7 +364,7 @@ def monolithic_upload_or_last_chunk(namespace_name, repo_name, upload_uuid):
 
 @v2_bp.route('/<repopath:repository>/blobs/uploads/<upload_uuid>', methods=['DELETE'])
 @parse_repository_name()
-@process_registry_jwt_auth
+@process_registry_jwt_auth(scopes=['pull', 'push'])
 @require_repo_write
 @anon_protect
 def cancel_upload(namespace_name, repo_name, upload_uuid):
@@ -383,8 +383,8 @@ def cancel_upload(namespace_name, repo_name, upload_uuid):
 
 
 @v2_bp.route('/<repopath:repository>/blobs/<digest>', methods=['DELETE'])
-@process_registry_jwt_auth
 @parse_repository_name()
+@process_registry_jwt_auth(scopes=['pull', 'push'])
 @require_repo_write
 @anon_protect
 def delete_digest(namespace_name, repo_name, upload_uuid):

endpoints/v2/catalog.py

@@ -7,7 +7,7 @@ from data import model
 from endpoints.v2.v2util import add_pagination
 
 @v2_bp.route('/_catalog', methods=['GET'])
-@process_registry_jwt_auth
+@process_registry_jwt_auth()
 @anon_protect
 def catalog_search():
   url = url_for('v2.catalog_search')

endpoints/v2/errors.py

@@ -1,7 +1,10 @@
 class V2RegistryException(Exception):
-  def __init__(self, error_code_str, message, detail, http_status_code=400):
+  def __init__(self, error_code_str, message, detail, http_status_code=400,
+               repository=None, scopes=None):
     super(V2RegistryException, self).__init__(message)
     self.http_status_code = http_status_code
+    self.repository = repository
+    self.scopes = scopes
 
     self._error_code_str = error_code_str
     self._detail = detail
@@ -104,11 +107,13 @@ class TagInvalid(V2RegistryException):
 
 
 class Unauthorized(V2RegistryException):
-  def __init__(self, detail=None):
+  def __init__(self, detail=None, repository=None, scopes=None):
     super(Unauthorized, self).__init__('UNAUTHORIZED',
                                        'access to the requested resource is not authorized',
                                        detail,
-                                       401)
+                                       401,
+                                       repository=repository,
+                                       scopes=scopes)
 
 
 class Unsupported(V2RegistryException):

endpoints/v2/manifest.py

@@ -241,8 +241,8 @@ class SignedManifestBuilder(object):
 
 
 @v2_bp.route(MANIFEST_TAGNAME_ROUTE, methods=['GET'])
-@process_registry_jwt_auth
 @parse_repository_name()
+@process_registry_jwt_auth(scopes=['pull'])
 @require_repo_read
 @anon_protect
 def fetch_manifest_by_tagname(namespace_name, repo_name, manifest_ref):
@@ -272,8 +272,8 @@ def fetch_manifest_by_tagname(namespace_name, repo_name, manifest_ref):
 
 
 @v2_bp.route(MANIFEST_DIGEST_ROUTE, methods=['GET'])
-@process_registry_jwt_auth
 @parse_repository_name()
+@process_registry_jwt_auth(scopes=['pull'])
 @require_repo_read
 @anon_protect
 def fetch_manifest_by_digest(namespace_name, repo_name, manifest_ref):
@@ -304,8 +304,8 @@ def _reject_manifest2_schema2(func):
 
 
 @v2_bp.route(MANIFEST_TAGNAME_ROUTE, methods=['PUT'])
-@process_registry_jwt_auth
 @parse_repository_name()
+@process_registry_jwt_auth(scopes=['pull', 'push'])
 @require_repo_write
 @anon_protect
 @_reject_manifest2_schema2
@@ -322,8 +322,8 @@ def write_manifest_by_tagname(namespace_name, repo_name, manifest_ref):
 
 
 @v2_bp.route(MANIFEST_DIGEST_ROUTE, methods=['PUT'])
-@process_registry_jwt_auth
 @parse_repository_name()
+@process_registry_jwt_auth(scopes=['pull', 'push'])
 @require_repo_write
 @anon_protect
 @_reject_manifest2_schema2
@@ -471,8 +471,8 @@ def _write_manifest(namespace_name, repo_name, manifest):
 
 
 @v2_bp.route(MANIFEST_DIGEST_ROUTE, methods=['DELETE'])
-@process_registry_jwt_auth
 @parse_repository_name()
+@process_registry_jwt_auth(scopes=['pull', 'push'])
 @require_repo_write
 @anon_protect
 def delete_manifest_by_digest(namespace_name, repo_name, manifest_ref):

endpoints/v2/tag.py

@@ -9,8 +9,8 @@ from endpoints.decorators import anon_protect
 from data import model
 
 @v2_bp.route('/<repopath:repository>/tags/list', methods=['GET'])
-@process_registry_jwt_auth
 @parse_repository_name()
+@process_registry_jwt_auth(scopes=['pull'])
 @require_repo_read
 @anon_protect
 def list_all_tags(namespace_name, repo_name):