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# frozen_string_literal: true
module Security
module CiConfiguration
# This class parses SAST template file and .gitlab-ci.yml to populate default and current values into the JSON
# read from app/validators/json_schemas/security_ci_configuration_schemas/sast_ui_schema.json
class SastParserService < ::BaseService
include Gitlab::Utils::StrongMemoize
SAST_UI_SCHEMA_PATH = 'app/validators/json_schemas/security_ci_configuration_schemas/sast_ui_schema.json'
def initialize(project)
@project = project
end
def configuration
result = Gitlab::Json.parse(File.read(Rails.root.join(SAST_UI_SCHEMA_PATH))).with_indifferent_access
populate_default_value_for(result, :global)
populate_default_value_for(result, :pipeline)
fill_current_value_with_default_for(result, :global)
fill_current_value_with_default_for(result, :pipeline)
populate_current_value_for(result, :global)
populate_current_value_for(result, :pipeline)
fill_current_value_with_default_for_analyzers(result)
populate_current_value_for_analyzers(result)
result
end
private
def sast_template_content
Gitlab::Template::GitlabCiYmlTemplate.find('SAST').content
end
def populate_default_value_for(config, level)
set_each(config[level], key: :default_value, with: sast_template_attributes)
end
def populate_current_value_for(config, level)
set_each(config[level], key: :value, with: gitlab_ci_yml_attributes)
end
def fill_current_value_with_default_for(config, level)
set_each(config[level], key: :value, with: sast_template_attributes)
end
def set_each(config_attributes, key:, with:)
config_attributes.each do |entity|
entity[key] = with[entity[:field]] if with[entity[:field]]
end
end
def fill_current_value_with_default_for_analyzers(result)
result[:analyzers].each do |analyzer|
analyzer[:variables].each do |entity|
entity[:value] = entity[:default_value] if entity[:default_value]
end
end
end
def populate_current_value_for_analyzers(result)
result[:analyzers].each do |analyzer|
analyzer[:enabled] = analyzer_enabled?(analyzer[:name])
populate_current_value_for(analyzer, :variables)
end
end
def analyzer_enabled?(analyzer_name)
# Unless explicitly listed in the excluded analyzers, consider it enabled
sast_excluded_analyzers.exclude?(analyzer_name)
end
def sast_excluded_analyzers
strong_memoize(:sast_excluded_analyzers) do
excluded_analyzers = gitlab_ci_yml_attributes["SAST_EXCLUDED_ANALYZERS"] || sast_template_attributes["SAST_EXCLUDED_ANALYZERS"]
excluded_analyzers.split(',').map(&:strip) rescue []
end
end
def sast_template_attributes
@sast_template_attributes ||= build_sast_attributes(sast_template_content)
end
def gitlab_ci_yml_attributes
@gitlab_ci_yml_attributes ||= begin
config_content = @project.repository.blob_data_at(@project.repository.root_ref_sha, ci_config_file)
return {} unless config_content
build_sast_attributes(config_content)
end
end
def ci_config_file
'.gitlab-ci.yml'
end
def build_sast_attributes(content)
options = { project: @project, user: current_user, sha: @project.repository.commit.sha }
yaml_result = Gitlab::Ci::YamlProcessor.new(content, options).execute
return {} unless yaml_result.valid?
extract_required_attributes(yaml_result)
end
def extract_required_attributes(yaml_result)
result = {}
yaml_result.yaml_variables_for(:sast).each do |variable|
result[variable[:key]] = variable[:value]
end
result[:stage] = yaml_result.stage_for(:sast)
result.with_indifferent_access
end
end
end
end
|
