Check for violations using spdx identifier

* Ensure spdx id or name match checks work for v2
* Add changelog entry

ee/app/models/software_license_policy.rb

@@ -38,5 +38,9 @@ class SoftwareLicensePolicy < ApplicationRecord
     with_license.where(SoftwareLicense.arel_table[:name].lower.in(Array(license_name).map(&:downcase)))
   end
 
+  scope :by_spdx, -> (spdx_identifier) do
+    with_license.where(software_licenses: { spdx_identifier: spdx_identifier })
+  end
+
   delegate :name, to: :software_license
 end

ee/changelogs/unreleased/13083-blacklist-violation-check.yml

+---
+title: Check for software license violations using SPDX identifiers
+merge_request: 18300
+author:
+type: changed

ee/lib/gitlab/ci/reports/license_scanning/report.rb

@@ -34,7 +34,9 @@ module Gitlab
           end
 
           def violates?(software_license_policies)
-            software_license_policies.blacklisted.with_license_by_name(license_names).exists?
+            policies_with_matching_license_name = software_license_policies.blacklisted.with_license_by_name(license_names)
+            policies_with_matching_spdx_id = software_license_policies.blacklisted.by_spdx(licenses.map(&:id).compact)
+            policies_with_matching_spdx_id.or(policies_with_matching_license_name).exists?
           end
 
           def diff_with(other_report)

ee/spec/factories/software_license.rb

@@ -5,11 +5,13 @@ FactoryBot.define do
     sequence(:name) { |n| "SOFTWARE-LICENSE-2.7/example_#{n}" }
 
     trait :mit do
+      spdx_identifier { 'MIT' }
       name { 'MIT' }
     end
 
     trait :apache_2_0 do
-      name { 'Apache 2.0' }
+      spdx_identifier { 'Apache-2.0' }
+      name { 'Apache 2.0 License' }
     end
   end
 end

ee/spec/lib/gitlab/ci/reports/license_scanning/report_spec.rb

@@ -7,8 +7,18 @@ describe Gitlab::Ci::Reports::LicenseScanning::Report do
 
   describe '#violates?' do
     let(:project) { create(:project) }
-    let(:mit_license) { build(:software_license, :mit) }
-    let(:apache_license) { build(:software_license, :apache_2_0) }
+
+    context "when checking for violations using v1 license scan report" do
+      subject { build(:license_scan_report) }
+
+      let(:mit_license) { build(:software_license, :mit, spdx_identifier: nil) }
+      let(:apache_license) { build(:software_license, :apache_2_0, spdx_identifier: nil) }
+
+      before do
+        subject
+          .add_license(id: nil, name: 'MIT')
+          .add_dependency('rails')
+      end
 
       context 'when a blacklisted license is found in the report' do
         let(:mit_blacklist) { build(:software_license_policy, :blacklist, software_license: mit_license) }
@@ -17,7 +27,7 @@ describe Gitlab::Ci::Reports::LicenseScanning::Report do
           project.software_license_policies << mit_blacklist
         end
 
-      it { expect(subject.violates?(project.software_license_policies)).to be(true) }
+        specify { expect(subject.violates?(project.software_license_policies)).to be(true) }
       end
 
       context 'when a blacklisted license is discovered with a different casing for the name' do
@@ -28,7 +38,7 @@ describe Gitlab::Ci::Reports::LicenseScanning::Report do
           project.software_license_policies << mit_blacklist
         end
 
-      it { expect(subject.violates?(project.software_license_policies)).to be(true) }
+        specify { expect(subject.violates?(project.software_license_policies)).to be(true) }
       end
 
       context 'when none of the licenses discovered in the report violate the blacklist policy' do
@@ -38,7 +48,50 @@ describe Gitlab::Ci::Reports::LicenseScanning::Report do
           project.software_license_policies << apache_blacklist
         end
 
-      it { expect(subject.violates?(project.software_license_policies)).to be(false) }
+        specify { expect(subject.violates?(project.software_license_policies)).to be(false) }
+      end
+    end
+
+    context "when checking for violations using the v2 license scan reports" do
+      subject { build(:license_scan_report) }
+
+      context "when a blacklisted license with a SPDX identifier is also in the report" do
+        let(:mit_spdx_id) { 'MIT' }
+        let(:mit_license) { build(:software_license, :mit, spdx_identifier: mit_spdx_id) }
+        let(:mit_policy) { build(:software_license_policy, :blacklist, software_license: mit_license) }
+
+        before do
+          subject.add_license(id: mit_spdx_id, name: 'MIT License')
+          project.software_license_policies << mit_policy
+        end
+
+        specify { expect(subject.violates?(project.software_license_policies)).to be(true) }
+      end
+
+      context "when a blacklisted license does not have an SPDX identifier because it was provided by an end user" do
+        let(:custom_license) { build(:software_license, name: 'custom', spdx_identifier: nil) }
+        let(:custom_policy) { build(:software_license_policy, :blacklist, software_license: custom_license) }
+
+        before do
+          subject.add_license(id: nil, name: 'Custom')
+          project.software_license_policies << custom_policy
+        end
+
+        specify { expect(subject.violates?(project.software_license_policies)).to be(true) }
+      end
+
+      context "when none of the licenses discovered match any of the blacklisted software policies" do
+        let(:apache_license) { build(:software_license, :apache_2_0, spdx_identifier: 'Apache-2.0') }
+        let(:apache_policy) { build(:software_license_policy, :blacklist, software_license: apache_license) }
+
+        before do
+          subject.add_license(id: nil, name: 'Custom')
+          subject.add_license(id: 'MIT', name: 'MIT License')
+          project.software_license_policies << apache_policy
+        end
+
+        specify { expect(subject.violates?(project.software_license_policies)).to be(false) }
+      end
     end
   end
 

ee/spec/models/software_license_policy_spec.rb

@@ -33,6 +33,17 @@ describe SoftwareLicensePolicy do
     end
   end
 
+  describe ".by_spdx" do
+    let_it_be(:mit) { create(:software_license, :mit) }
+    let_it_be(:mit_policy) { create(:software_license_policy, software_license: mit) }
+    let_it_be(:apache) { create(:software_license, :apache_2_0) }
+    let_it_be(:apache_policy) { create(:software_license_policy, software_license: apache) }
+
+    it { expect(described_class.by_spdx(mit.spdx_identifier)).to match_array([mit_policy]) }
+    it { expect(described_class.by_spdx([mit.spdx_identifier, apache.spdx_identifier])).to match_array([mit_policy, apache_policy]) }
+    it { expect(described_class.by_spdx(SecureRandom.uuid)).to be_empty }
+  end
+
   describe "#name" do
     specify { expect(subject.name).to eql(subject.software_license.name) }
   end