Allow use of basic auth for security scan endpoints

This will allow the security labeler to send a pull secret to retrieve security information for a manifest

Fixes https://jira.coreos.com/browse/QUAY-1087

auth/decorators.py

@@ -60,6 +60,7 @@ process_oauth = _auth_decorator(handlers=[validate_bearer_auth, validate_session
 process_auth = _auth_decorator(handlers=[validate_signed_grant, validate_basic_auth])
 process_auth_or_cookie = _auth_decorator(handlers=[validate_basic_auth, validate_session_cookie])
 process_basic_auth = _auth_decorator(handlers=[validate_basic_auth], pass_result=True)
+process_basic_auth_no_pass = _auth_decorator(handlers=[validate_basic_auth])
 
 
 def require_session_login(func):

endpoints/api/secscan.py

@@ -4,6 +4,7 @@ import logging
 import features
 
 from app import secscan_api
+from auth.decorators import process_basic_auth_no_pass
 from data.registry_model import registry_model
 from data.registry_model.datatypes import SecurityScanStatus
 from endpoints.api import (require_repo_read, path_param,
@@ -53,6 +54,7 @@ def _security_info(manifest_or_legacy_image, include_vulnerabilities=True):
 class RepositoryImageSecurity(RepositoryParamResource):
   """ Operations for managing the vulnerabilities in a repository image. """
 
+  @process_basic_auth_no_pass
   @require_repo_read
   @nickname('getRepoImageSecurity')
   @disallow_for_app_repositories
@@ -79,6 +81,7 @@ class RepositoryImageSecurity(RepositoryParamResource):
 class RepositoryManifestSecurity(RepositoryParamResource):
   """ Operations for managing the vulnerabilities in a repository manifest. """
 
+  @process_basic_auth_no_pass
   @require_repo_read
   @nickname('getRepoManifestSecurity')
   @disallow_for_app_repositories

endpoints/api/test/shared.py

@@ -1,10 +1,11 @@
 from endpoints.test.shared import conduct_call
 from endpoints.api import api
 
-def conduct_api_call(client, resource, method, params, body=None, expected_code=200):
+def conduct_api_call(client, resource, method, params, body=None, expected_code=200, headers=None):
   """ Conducts an API call to the given resource via the given client, and ensures its returned
       status matches the code given.
 
       Returns the response.
   """
-  return conduct_call(client, resource, api.url_for, method, params, body, expected_code)
+  return conduct_call(client, resource, api.url_for, method, params, body, expected_code,
+                      headers=headers)

endpoints/api/test/test_secscan.py

@@ -0,0 +1,30 @@
+import base64
+
+import pytest
+
+from data.registry_model import registry_model
+from endpoints.api.test.shared import conduct_api_call
+from endpoints.api.secscan import RepositoryImageSecurity, RepositoryManifestSecurity
+
+from test.fixtures import *
+
+@pytest.mark.parametrize('endpoint', [
+  RepositoryImageSecurity,
+  RepositoryManifestSecurity,
+])
+def test_get_security_info_with_pull_secret(endpoint, client):
+  repository_ref = registry_model.lookup_repository('devtable', 'simple')
+  tag = registry_model.get_repo_tag(repository_ref, 'latest', include_legacy_image=True)
+  manifest = registry_model.get_manifest_for_tag(tag, backfill_if_necessary=True)
+
+  params = {
+    'repository': 'devtable/simple',
+    'imageid': tag.legacy_image.docker_image_id,
+    'manifestref': manifest.digest,
+  }
+
+  headers = {
+    'Authorization': 'Basic %s' % base64.b64encode('devtable:password'),
+  }
+
+  conduct_api_call(client, endpoint, 'GET', params, None, headers=headers, expected_code=200)