diff options
Diffstat (limited to 'lib/security/ci_configuration/sast_build_actions.rb')
-rw-r--r-- | lib/security/ci_configuration/sast_build_actions.rb | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/lib/security/ci_configuration/sast_build_actions.rb b/lib/security/ci_configuration/sast_build_actions.rb new file mode 100644 index 00000000000..b2d684bc1e1 --- /dev/null +++ b/lib/security/ci_configuration/sast_build_actions.rb @@ -0,0 +1,170 @@ +# frozen_string_literal: true + +module Security + module CiConfiguration + class SastBuildActions + SAST_DEFAULT_ANALYZERS = 'bandit, brakeman, eslint, flawfinder, gosec, kubesec, nodejs-scan, phpcs-security-audit, pmd-apex, security-code-scan, sobelow, spotbugs' + + def initialize(auto_devops_enabled, params, existing_gitlab_ci_content) + @auto_devops_enabled = auto_devops_enabled + @variables = variables(params) + @existing_gitlab_ci_content = existing_gitlab_ci_content || {} + @default_sast_values = default_sast_values(params) + @default_values_overwritten = false + end + + def generate + action = @existing_gitlab_ci_content.present? ? 'update' : 'create' + + update_existing_content! + + [{ action: action, file_path: '.gitlab-ci.yml', content: prepare_existing_content, default_values_overwritten: @default_values_overwritten }] + end + + private + + def variables(params) + # This early return is necessary for supporting REST API. + # Will be removed during the implementation of + # https://gitlab.com/gitlab-org/gitlab/-/issues/246737 + return params unless params['global'].present? + + collect_values(params, 'value') + end + + def default_sast_values(params) + collect_values(params, 'defaultValue') + end + + def collect_values(config, key) + global_variables = config['global']&.to_h { |k| [k['field'], k[key]] } || {} + pipeline_variables = config['pipeline']&.to_h { |k| [k['field'], k[key]] } || {} + + analyzer_variables = collect_analyzer_values(config, key) + + global_variables.merge!(pipeline_variables).merge!(analyzer_variables) + end + + def collect_analyzer_values(config, key) + analyzer_variables = analyzer_variables_for(config, key) + analyzer_variables['SAST_EXCLUDED_ANALYZERS'] = if key == 'value' + config['analyzers'] + &.reject {|a| a['enabled'] } + &.collect {|a| a['name'] } + &.sort + &.join(', ') + else + '' + end + + analyzer_variables + end + + def analyzer_variables_for(config, key) + config['analyzers'] + &.select {|a| a['enabled'] && a['variables'] } + &.flat_map {|a| a['variables'] } + &.collect {|v| [v['field'], v[key]] }.to_h + end + + def update_existing_content! + @existing_gitlab_ci_content['stages'] = set_stages + @existing_gitlab_ci_content['variables'] = set_variables(global_variables, @existing_gitlab_ci_content) + @existing_gitlab_ci_content['sast'] = set_sast_block + @existing_gitlab_ci_content['include'] = set_includes + + @existing_gitlab_ci_content.select! { |k, v| v.present? } + @existing_gitlab_ci_content['sast'].select! { |k, v| v.present? } + end + + def set_includes + includes = @existing_gitlab_ci_content['include'] || [] + includes = includes.is_a?(Array) ? includes : [includes] + includes << { 'template' => template } + includes.uniq + end + + def set_stages + existing_stages = @existing_gitlab_ci_content['stages'] || [] + base_stages = @auto_devops_enabled ? auto_devops_stages : ['test'] + (existing_stages + base_stages + [sast_stage]).uniq + end + + def auto_devops_stages + auto_devops_template = YAML.safe_load( Gitlab::Template::GitlabCiYmlTemplate.find('Auto-DevOps').content ) + auto_devops_template['stages'] + end + + def sast_stage + @variables['stage'].presence ? @variables['stage'] : 'test' + end + + def set_variables(variables, hash_to_update = {}) + hash_to_update['variables'] ||= {} + + variables.each do |key| + if @variables[key].present? && @variables[key].to_s != @default_sast_values[key].to_s + hash_to_update['variables'][key] = @variables[key] + @default_values_overwritten = true + else + hash_to_update['variables'].delete(key) + end + end + + hash_to_update['variables'] + end + + def set_sast_block + sast_content = @existing_gitlab_ci_content['sast'] || {} + sast_content['variables'] = set_variables(sast_variables) + sast_content['stage'] = sast_stage + sast_content.select { |k, v| v.present? } + end + + def prepare_existing_content + content = @existing_gitlab_ci_content.to_yaml + content = remove_document_delimeter(content) + + content.prepend(sast_comment) + end + + def remove_document_delimeter(content) + content.gsub(/^---\n/, '') + end + + def sast_comment + <<~YAML + # You can override the included template(s) by including variable overrides + # See https://docs.gitlab.com/ee/user/application_security/sast/#customizing-the-sast-settings + # Note that environment variables can be set in several places + # See https://docs.gitlab.com/ee/ci/variables/#priority-of-environment-variables + YAML + end + + def template + return 'Auto-DevOps.gitlab-ci.yml' if @auto_devops_enabled + + 'Security/SAST.gitlab-ci.yml' + end + + def global_variables + %w( + SECURE_ANALYZERS_PREFIX + ) + end + + def sast_variables + %w( + SAST_ANALYZER_IMAGE_TAG + SAST_EXCLUDED_PATHS + SEARCH_MAX_DEPTH + SAST_EXCLUDED_ANALYZERS + SAST_BRAKEMAN_LEVEL + SAST_BANDIT_EXCLUDED_PATHS + SAST_FLAWFINDER_LEVEL + SAST_GOSEC_LEVEL + ) + end + end + end +end |