Add support for SAST in security policies

doc/api/graphql/reference/index.md

@@ -13602,7 +13602,7 @@ four standard [pagination arguments](#connection-pagination-arguments):
 
 | Name | Type | Description |
 | ---- | ---- | ----------- |
-| <a id="projectscanexecutionpoliciesactionscantypes"></a>`actionScanTypes` | [`[SecurityReportTypeEnum!]`](#securityreporttypeenum) | Filters policies by the action scan type. Only these scan types are supported: `dast`, `secret_detection`, `cluster_image_scanning`, `container_scanning`. |
+| <a id="projectscanexecutionpoliciesactionscantypes"></a>`actionScanTypes` | [`[SecurityReportTypeEnum!]`](#securityreporttypeenum) | Filters policies by the action scan type. Only these scan types are supported: `dast`, `secret_detection`, `cluster_image_scanning`, `container_scanning`, `sast`. |
 
 ##### `Project.sentryDetailedError`
 

doc/user/application_security/policies/index.md

@@ -307,7 +307,7 @@ rule in the defined policy are met.
 
 | Field | Type | Possible values | Description |
 |-------|------|-----------------|-------------|
-| `scan` | `string` | `dast`, `secret_detection` | The action's type. |
+| `scan` | `string` | `dast`, `secret_detection`, `sast` | The action's type. |
 | `site_profile` | `string` | Name of the selected [DAST site profile](../dast/index.md#site-profile). | The DAST site profile to execute the DAST scan. This field should only be set if `scan` type is `dast`. |
 | `scanner_profile` | `string` or `null` | Name of the selected [DAST scanner profile](../dast/index.md#scanner-profile). | The DAST scanner profile to execute the DAST scan. This field should only be set if `scan` type is `dast`.|
 
@@ -330,6 +330,7 @@ Note the following:
 - A container scanning and cluster image scanning scans configured for the `pipeline` rule type will ignore the cluster defined in the `clusters` object.
   They will use predefined CI/CD variables defined for your project. Cluster selection with the `clusters` object is supported for the `schedule` rule type.
   Cluster with name provided in `clusters` object must be created and configured for the project. To be able to successfully perform the `container_scanning`/`cluster_image_scanning` scans for the cluster you must follow instructions for the [Cluster Image Scanning feature](../cluster_image_scanning/index.md#prerequisites).
+- The SAST scan uses the default template and runs in a [child pipeline](../../../ci/pipelines/parent_child_pipelines.md).
 
 ### Example security policies project
 

ee/app/models/concerns/security/scan_execution_policy.rb

@@ -11,7 +11,7 @@ module Security
       schedule: 'schedule'
     }.freeze
 
-    SCAN_TYPES = %w[dast secret_detection cluster_image_scanning container_scanning].freeze
+    SCAN_TYPES = %w[dast secret_detection cluster_image_scanning container_scanning sast].freeze
     ON_DEMAND_SCANS = %w[dast].freeze
 
     included do

ee/app/services/security/security_orchestration_policies/ci_configuration_service.rb

@@ -6,7 +6,8 @@ module Security
       SCAN_TEMPLATES = {
         'secret_detection' => 'Jobs/Secret-Detection',
         'cluster_image_scanning' => 'Security/Cluster-Image-Scanning',
-        'container_scanning' => 'Security/Container-Scanning'
+        'container_scanning' => 'Security/Container-Scanning',
+        'sast' => 'Security/SAST'
       }.freeze
 
       def execute(action, ci_variables)
@@ -15,6 +16,8 @@ module Security
           secret_detection_configuration(ci_variables)
         when 'container_scanning', 'cluster_image_scanning'
           scan_configuration(action[:scan], ci_variables)
+        when 'sast'
+          child_pipeline_configuration(action[:scan])
         else
           error_script('Invalid Scan type')
         end
@@ -44,6 +47,17 @@ module Security
           .except(:rules)
       end
 
+      def child_pipeline_configuration(template)
+        {
+          inherit: {
+            variables: false
+          },
+          trigger: {
+            include: [{ template: "#{SCAN_TEMPLATES[template.to_s]}.gitlab-ci.yml" }]
+          }
+        }
+      end
+
       def error_script(error_message)
         {
           'script' => "echo \"Error during Scan execution: #{error_message}\" && false",

ee/app/services/security/security_orchestration_policies/rule_schedule_service.rb

@@ -25,6 +25,7 @@ module Security
         when 'container_scanning' then schedule_container_scanning_scan(action, schedule, branches)
         when 'cluster_image_scanning' then schedule_cluster_image_scanning_scan(action, schedule)
         when 'dast' then schedule_dast_on_demand_scan(action, branches)
+        when 'sast' then schedule_scan(action, branches)
         end
       end
 

ee/app/validators/json_schemas/security_orchestration_policy.json

@@ -119,7 +119,8 @@
                     "dast",
                     "secret_detection",
                     "container_scanning",
-                    "cluster_image_scanning"
+                    "cluster_image_scanning",
+                    "sast"
                   ],
                   "type": "string"
                 },
@@ -184,6 +185,18 @@
                   "then": {
                     "maxProperties": 1
                   }
+                },
+                {
+                  "if": {
+                    "properties": {
+                      "scan": {
+                        "const": "sast"
+                      }
+                    }
+                  },
+                  "then": {
+                    "maxProperties": 1
+                  }
                 }
               ],
               "additionalProperties": false

ee/spec/services/security/security_orchestration_policies/ci_configuration_service_spec.rb

@@ -112,6 +112,20 @@ RSpec.describe Security::SecurityOrchestrationPolicies::CiConfigurationService d
           expect(subject.deep_symbolize_keys).to eq(expected_configuration)
         end
       end
+
+      context 'when scan type is sast' do
+        let_it_be(:action) { { scan: 'sast' } }
+        let_it_be(:ci_variables) { {} }
+
+        it 'returns prepared CI configuration for SAST' do
+          expected_configuration = {
+            inherit: { variables: false },
+            trigger: { include: [{ template: 'Security/SAST.gitlab-ci.yml' }] }
+          }
+
+          expect(subject.deep_symbolize_keys).to eq(expected_configuration)
+        end
+      end
     end
 
     context 'when action is invalid' do

ee/spec/services/security/security_orchestration_policies/create_pipeline_service_spec.rb

@@ -125,6 +125,16 @@ RSpec.describe Security::SecurityOrchestrationPolicies::CreatePipelineService do
             expect(build.name).to eq('container_scanning')
           end
         end
+
+        context 'for sast scan' do
+          let(:action) { { scan: 'sast' } }
+
+          it 'sets the build name to sast' do
+            build = pipeline.bridges.first
+
+            expect(build.name).to eq('sast')
+          end
+        end
       end
     end
   end

ee/spec/services/security/security_orchestration_policies/rule_schedule_service_spec.rb

@@ -124,6 +124,32 @@ RSpec.describe Security::SecurityOrchestrationPolicies::RuleScheduleService do
       end
     end
 
+    context 'when scan type is sast' do
+      before do
+        policy[:actions] = [{ scan: 'sast' }]
+      end
+
+      it 'invokes Security::SecurityOrchestrationPolicies::CreatePipelineService for both branches' do
+        expect(::Security::SecurityOrchestrationPolicies::CreatePipelineService).to(
+          receive(:new)
+          .with(project: project, current_user: current_user, params: { action: policy[:actions].first, branch: 'master' })
+          .and_call_original)
+
+        expect(::Security::SecurityOrchestrationPolicies::CreatePipelineService).to(
+          receive(:new)
+          .with(project: project, current_user: current_user, params: { action: policy[:actions].first, branch: 'production' })
+          .and_call_original)
+
+        service.execute(schedule)
+      end
+
+      it 'invokes Security::SecurityOrchestrationPolicies::CreatePipelineService' do
+        expect(::Security::SecurityOrchestrationPolicies::CreatePipelineService).to receive(:new).twice.and_call_original
+
+        service.execute(schedule)
+      end
+    end
+
     context 'when policy actions exists and there are multiple matching branches' do
       it 'creates multiple scan pipelines and updates next_run_at' do
         expect { service.execute(schedule) }.to change(Ci::Pipeline, :count).by(2)

ee/spec/services/security/security_orchestration_policies/scan_pipeline_service_spec.rb

@@ -38,11 +38,12 @@ RSpec.describe Security::SecurityOrchestrationPolicies::ScanPipelineService do
           { scan: 'secret_detection' },
           { scan: 'dast', scanner_profile: 'Scanner Profile', site_profile: 'Site Profile' },
           { scan: 'cluster_image_scanning' },
-          { scan: 'container_scanning' }
+          { scan: 'container_scanning' },
+          { scan: 'sast' }
         ]
       end
 
-      it_behaves_like 'creates scan jobs', 4, [:'secret-detection-0', :'dast-1', :'cluster-image-scanning-2', :'container-scanning-3']
+      it_behaves_like 'creates scan jobs', 5, [:'secret-detection-0', :'dast-1', :'cluster-image-scanning-2', :'container-scanning-3', :'sast-4']
     end
 
     context 'when there are valid and invalid actions' do