Unverified Commit 520a57a1 authored by Douwe Maan's avatar Douwe Maan Committed by Tomasz Maczukin

Merge branch 'saml-ldap-link-flow' into 'master'

Adjust the SAML control flow to allow LDAP identities to be added to an existing SAML user.

It correctly lets an existing SAML user to add their LDAP identity automatically at login.

A customer had issues with the `auto_link_ldap_user` feature. The flow was not working if there was an account with a SAML identity, but no LDAP identity. GitLab would pick up the correct LDAP person, but due to the order of the flow, that LDAP person was never associated with the user.

Fixes #17346

/cc @dblessing @balameb @stanhu

See merge request !4498
parent 6e23d642
......@@ -5,6 +5,7 @@ v 8.8.5
- Fix todos page throwing errors when you have a project pending deletion
- Disable Webhooks before proceeding with the GitHub import
- Fix importer for GitHub comments on diff
- Adjust the SAML control flow to allow LDAP identities to be added to an existing SAML user
v 8.8.4
- Fix LDAP-based login for users with 2FA enabled. !4493
......@@ -69,13 +69,20 @@ module Gitlab
return unless ldap_person
# If a corresponding person exists with same uid in a LDAP server,
# set up a Gitlab user with dual LDAP and Omniauth identities.
if user = Gitlab::LDAP::User.find_by_uid_and_provider(ldap_person.dn, ldap_person.provider)
# Case when a LDAP user already exists in Gitlab. Add the Omniauth identity to existing account.
# check if the user already has a GitLab account.
user = Gitlab::LDAP::User.find_by_uid_and_provider(ldap_person.dn, ldap_person.provider)
if user
# Case when a LDAP user already exists in Gitlab. Add the OAuth identity to existing account.
log.info "LDAP account found for user #{user.username}. Building new #{auth_hash.provider} identity."
user.identities.build(extern_uid: auth_hash.uid, provider: auth_hash.provider)
# No account in Gitlab yet: create it and add the LDAP identity
user = build_new_user
log.info "No existing LDAP account was found in GitLab. Checking for #{auth_hash.provider} account."
user = find_by_uid_and_provider
if user.nil?
log.info "No user found using #{auth_hash.provider} provider. Creating a new one."
user = build_new_user
log.info "Correct account has been found. Adding LDAP identity to user: #{user.username}."
user.identities.new(provider: ldap_person.provider, extern_uid: ldap_person.dn)
......@@ -12,12 +12,12 @@ module Gitlab
def gl_user
@user ||= find_by_uid_and_provider
if auto_link_ldap_user?
@user ||= find_or_create_ldap_user
@user ||= find_by_uid_and_provider
if auto_link_saml_user?
@user ||= find_by_email
......@@ -145,6 +145,7 @@ describe Gitlab::Saml::User, lib: true do
allow(ldap_user).to receive(:email) { %w(john@mail.com john2@example.com) }
allow(ldap_user).to receive(:dn) { 'uid=user1,ou=People,dc=example' }
allow(Gitlab::LDAP::Person).to receive(:find_by_uid).and_return(ldap_user)
allow(Gitlab::LDAP::Person).to receive(:find_by_dn).and_return(ldap_user)
context 'and no account for the LDAP user' do
......@@ -177,6 +178,23 @@ describe Gitlab::Saml::User, lib: true do
context 'user has SAML user, and wants to add their LDAP identity' do
it 'adds the LDAP identity to the existing SAML user' do
create(:omniauth_user, email: 'john@mail.com', extern_uid: 'uid=user1,ou=People,dc=example', provider: 'saml', username: 'john')
local_hash = OmniAuth::AuthHash.new(uid: 'uid=user1,ou=People,dc=example', provider: provider, info: info_hash)
local_saml_user = described_class.new(local_hash)
local_gl_user = local_saml_user.gl_user
expect(local_gl_user).to be_valid
expect(local_gl_user.identities.length).to eql 2
identities_as_hash = local_gl_user.identities.map { |id| { provider: id.provider, extern_uid: id.extern_uid } }
expect(identities_as_hash).to match_array([ { provider: 'ldapmain', extern_uid: 'uid=user1,ou=People,dc=example' },
{ provider: 'saml', extern_uid: 'uid=user1,ou=People,dc=example' }
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