docs: added example how to enroll multiple users to SAML.

docs/auth/auth-saml-bulk-enroll-users.rst

@@ -0,0 +1,72 @@
+.. _auth-saml-bulk-enroll-users-ref:
+
+
+Bulk enroll multiple existing users
+-----------------------------------
+
+
+RhodeCode Supports standard SAML 2.0 SSO for the web-application part.
+Below is an example how to enroll list of all or some users to use SAML authentication.
+This method simply enables SAML authentication for many users at once.
+
+
+From the server RhodeCode Enterprise is running run ishell on the instance which we
+want to apply the SAML migration:
+
+```
+rccontrol ishell enterprise-1
+```
+
+Follow these steps to enable SAML authentication for multiple users.
+
+
+1) Create a user_id => attribute mapping
+
+
+`saml2user` is a mapping of external ID from SAML provider such as OneLogin, DuoSecurity, Google.
+This mapping consists of local rhodecode user_id mapped to set of required attributes needed to bind SAML
+account to internal rhodecode user.
+For example, 123 is local rhodecode user_id, and '48253211' is onelogin ID.
+For other providers you'd have to figure out what would be the user-id, sometimes it's the email, i.e for Google
+
+In [1]: saml2user = {
+   ...: # OneLogin, uses externalID available to read from in the UI
+   ...: 123: {'id: '48253211'},
+   ...: # for google use email
+   ...: 124: {'id: 'email@domain.com'},
+   ...: }
+
+2) Import the plugin you want to run migration for, pick only one and run the `import` statement
+# for duo security
+In [2]: from rc_auth_plugins.auth_duo_security import RhodeCodeAuthPlugin
+# for onelogin
+In [2]: from rc_auth_plugins.auth_onelogin import RhodeCodeAuthPlugin
+# generic saml
+In [2]: from rc_auth_plugins.auth_duo_security import RhodeCodeAuthPlugin
+
+3) Run the migration based on saml2user mapping. Enter in the ishell prompt
+In [3]: for user in User.get_all():
+   ...:     existing_identity = ExternalIdentity().query().filter(ExternalIdentity.local_user_id == user.user_id).scalar()
+   ...:     attrs = saml2user.get(user.user_id)
+   ...:     provider = RhodeCodeAuthPlugin.uid
+   ...:     if not existing_identity and attrs:
+   ...:         new_external_identity = ExternalIdentity()
+   ...:         new_external_identity.external_id = attrs['id']
+   ...:         new_external_identity.external_username = '{}-saml-{}'.format(user.username, user.user_id)
+   ...:         new_external_identity.provider_name = provider
+   ...:         new_external_identity.local_user_id = user_id
+   ...:         new_external_identity.access_token = ''
+   ...:         new_external_identity.token_secret = ''
+   ...:         new_external_identity.alt_token = ''
+   ...:         Session().add(ex_identity)
+   ...:         Session().commit()
+
+
+.. note::
+
+    saml2user can be really big and hard to maintain in ishell. It's also possible
+    to load it as a JSON file prepared before and stored on disk. To do so run::
+
+        import json
+        saml2user = json.loads(open('/path/to/saml2user.json','rb').read())
+

docs/auth/auth-saml-generic.rst

@@ -15,4 +15,5 @@ Please check for reference two example providers:
 
    auth-saml-duosecurity
    auth-saml-onelogin
+   auth-saml-bulk-enroll-users