sap-jenkins-library/cmd/checkmarxExecuteScan.go

package cmd

import (
	"archive/zip"
	"fmt"
	"io"
	"io/ioutil"
	"os"
	"path/filepath"
	"regexp"
	"sort"
	"strconv"
	"strings"
	"time"

	"encoding/json"
	"encoding/xml"

	"github.com/SAP/jenkins-library/pkg/checkmarx"
	piperHttp "github.com/SAP/jenkins-library/pkg/http"
	"github.com/SAP/jenkins-library/pkg/log"
	"github.com/SAP/jenkins-library/pkg/piperutils"
	"github.com/SAP/jenkins-library/pkg/telemetry"
	"github.com/bmatcuk/doublestar"
	"github.com/pkg/errors"
)

type checkmarxExecuteScanUtils interface {
	FileInfoHeader(fi os.FileInfo) (*zip.FileHeader, error)
	Stat(name string) (os.FileInfo, error)
	Open(name string) (*os.File, error)
	WriteFile(filename string, data []byte, perm os.FileMode) error
	PathMatch(pattern, name string) (bool, error)
	GetWorkspace() string
}

type checkmarxExecuteScanUtilsBundle struct {
	workspace string
}

func (checkmarxExecuteScanUtilsBundle) PathMatch(pattern, name string) (bool, error) {
	return doublestar.PathMatch(pattern, name)
}

func (b checkmarxExecuteScanUtilsBundle) GetWorkspace() string {
	return b.workspace
}

func (checkmarxExecuteScanUtilsBundle) WriteFile(filename string, data []byte, perm os.FileMode) error {
	return ioutil.WriteFile(filename, data, perm)
}

func (checkmarxExecuteScanUtilsBundle) FileInfoHeader(fi os.FileInfo) (*zip.FileHeader, error) {
	return zip.FileInfoHeader(fi)
}

func (checkmarxExecuteScanUtilsBundle) Stat(name string) (os.FileInfo, error) {
	return os.Stat(name)
}

func (checkmarxExecuteScanUtilsBundle) Open(name string) (*os.File, error) {
	return os.Open(name)
}

func checkmarxExecuteScan(config checkmarxExecuteScanOptions, _ *telemetry.CustomData, influx *checkmarxExecuteScanInflux) {
	client := &piperHttp.Client{}
	options := piperHttp.ClientOptions{MaxRetries: config.MaxRetries}
	client.SetOptions(options)
	sys, err := checkmarx.NewSystemInstance(client, config.ServerURL, config.Username, config.Password)
	if err != nil {
		log.Entry().WithError(err).Fatalf("Failed to create Checkmarx client talking to URL %v", config.ServerURL)
	}
	influx.step_data.fields.checkmarx = false
	utils := checkmarxExecuteScanUtilsBundle{workspace: "./"}
	if err := runScan(config, sys, influx, utils); err != nil {
		log.Entry().WithError(err).Fatal("Failed to execute Checkmarx scan.")
	}
	influx.step_data.fields.checkmarx = true
}

func runScan(config checkmarxExecuteScanOptions, sys checkmarx.System, influx *checkmarxExecuteScanInflux, utils checkmarxExecuteScanUtils) error {
	teamID := config.TeamID
	if len(teamID) == 0 {
		readTeamID, err := loadTeamIDByTeamName(config, sys, teamID)
		if err != nil {
			return err
		}
		teamID = readTeamID
	}
	project, projectName, err := loadExistingProject(sys, config.ProjectName, config.PullRequestName, teamID)
	if err != nil {
		return errors.Wrap(err, "error when trying to load project")
	}
	if project.Name == projectName {
		err = presetExistingProject(config, sys, projectName, project)
		if err != nil {
			return err
		}
	} else {
		project, err = createNewProject(config, sys, projectName, teamID)
		if err != nil {
			return err
		}
	}

	err = uploadAndScan(config, sys, project, influx, utils)
	if err != nil {
		return errors.Wrap(err, "failed to run scan and upload result")
	}
	return nil
}

func loadTeamIDByTeamName(config checkmarxExecuteScanOptions, sys checkmarx.System, teamID string) (string, error) {
	team, err := loadTeam(sys, config.TeamName)
	if err != nil {
		return "", errors.Wrap(err, "failed to load team")
	}
	teamIDBytes, _ := team.ID.MarshalJSON()
	err = json.Unmarshal(teamIDBytes, &teamID)
	if err != nil {
		var teamIDInt int
		err = json.Unmarshal(teamIDBytes, &teamIDInt)
		if err != nil {
			return "", errors.Wrap(err, "failed to unmarshall team.ID")
		}
		teamID = strconv.Itoa(teamIDInt)
	}
	return teamID, nil
}

func createNewProject(config checkmarxExecuteScanOptions, sys checkmarx.System, projectName string, teamID string) (checkmarx.Project, error) {
	log.Entry().Infof("Project %v does not exist, starting to create it...", projectName)
	presetID, err := strconv.Atoi(config.Preset)
	if err != nil {
		return checkmarx.Project{}, errors.Wrapf(err, "failed to convert string %v to int", config.Preset)
	}
	project, err := createAndConfigureNewProject(sys, projectName, teamID, presetID, config.Preset, config.SourceEncoding)
	if err != nil {
		return checkmarx.Project{}, errors.Wrapf(err, "failed to create and configure new project %v", projectName)
	}
	return project, nil
}

func presetExistingProject(config checkmarxExecuteScanOptions, sys checkmarx.System, projectName string, project checkmarx.Project) error {
	log.Entry().Infof("Project %v exists...", projectName)
	if len(config.Preset) > 0 {
		presetID, err := strconv.Atoi(config.Preset)
		if err != nil {
			return errors.Wrapf(err, "failed to convert string %v to int", config.Preset)
		}
		err = setPresetForProject(sys, project.ID, presetID, projectName, config.Preset, config.SourceEncoding)
		if err != nil {
			return errors.Wrapf(err, "failed to set preset %v for project %v", config.Preset, projectName)
		}
	}
	return nil
}

func loadTeam(sys checkmarx.System, teamName string) (checkmarx.Team, error) {
	teams := sys.GetTeams()
	team := checkmarx.Team{}
	if len(teams) > 0 && len(teamName) > 0 {
		return sys.FilterTeamByName(teams, teamName), nil
	}
	return team, fmt.Errorf("failed to identify team by teamName %v", teamName)
}

func loadExistingProject(sys checkmarx.System, initialProjectName, pullRequestName, teamID string) (checkmarx.Project, string, error) {
	var project checkmarx.Project
	projectName := initialProjectName
	if len(pullRequestName) > 0 {
		projectName = fmt.Sprintf("%v_%v", initialProjectName, pullRequestName)
		projects, err := sys.GetProjectsByNameAndTeam(projectName, teamID)
		if err != nil || len(projects) == 0 {
			projects, err = sys.GetProjectsByNameAndTeam(initialProjectName, teamID)
			if err != nil {
				return project, projectName, errors.Wrap(err, "failed getting projects")
			}
			if len(projects) == 0 {
				return checkmarx.Project{}, projectName, nil
			}
			branchProject, err := sys.GetProjectByID(sys.CreateBranch(projects[0].ID, projectName))
			if err != nil {
				return project, projectName, fmt.Errorf("failed to create branch %v for project %v", projectName, initialProjectName)
			}
			project = branchProject
		} else {
			project = projects[0]
			log.Entry().Debugf("Loaded project with name %v", project.Name)
		}
	} else {
		projects, err := sys.GetProjectsByNameAndTeam(projectName, teamID)
		if err != nil {
			return project, projectName, errors.Wrap(err, "failed getting projects")
		}
		if len(projects) == 0 {
			return checkmarx.Project{}, projectName, nil
		}
		project = projects[0]
		log.Entry().Debugf("Loaded project with name %v", project.Name)
	}
	return project, projectName, nil
}

func zipWorkspaceFiles(filterPattern string, utils checkmarxExecuteScanUtils) (*os.File, error) {
	zipFileName := filepath.Join(utils.GetWorkspace(), "workspace.zip")
	patterns := strings.Split(strings.ReplaceAll(strings.ReplaceAll(filterPattern, ", ", ","), " ,", ","), ",")
	sort.Strings(patterns)
	zipFile, err := os.Create(zipFileName)
	if err != nil {
		return zipFile, errors.Wrap(err, "failed to create archive of project sources")
	}
	defer zipFile.Close()
	err = zipFolder(utils.GetWorkspace(), zipFile, patterns, utils)
	if err != nil {
		return nil, errors.Wrap(err, "failed to compact folder")
	}
	return zipFile, nil
}

func uploadAndScan(config checkmarxExecuteScanOptions, sys checkmarx.System, project checkmarx.Project, influx *checkmarxExecuteScanInflux, utils checkmarxExecuteScanUtils) error {
	previousScans, err := sys.GetScans(project.ID)
	if err != nil && config.VerifyOnly {
		log.Entry().Warnf("Cannot load scans for project %v, verification only mode aborted", project.Name)
	}
	if len(previousScans) > 0 && config.VerifyOnly {
		err := verifyCxProjectCompliance(config, sys, previousScans[0].ID, influx, utils)
		if err != nil {
			log.SetErrorCategory(log.ErrorCompliance)
			return errors.Wrapf(err, "project %v not compliant", project.Name)
		}
	} else {
		zipFile, err := zipWorkspaceFiles(config.FilterPattern, utils)
		if err != nil {
			return errors.Wrap(err, "failed to zip workspace files")
		}
		err = sys.UploadProjectSourceCode(project.ID, zipFile.Name())
		if err != nil {
			return errors.Wrapf(err, "failed to upload source code for project %v", project.Name)
		}

		log.Entry().Debugf("Source code uploaded for project %v", project.Name)
		err = os.Remove(zipFile.Name())
		if err != nil {
			log.Entry().WithError(err).Warnf("Failed to delete zipped source code for project %v", project.Name)
		}

		incremental := config.Incremental
		fullScanCycle, err := strconv.Atoi(config.FullScanCycle)
		if err != nil {
			log.SetErrorCategory(log.ErrorConfiguration)
			return errors.Wrapf(err, "invalid configuration value for fullScanCycle %v, must be a positive int", config.FullScanCycle)
		}

		if incremental && config.FullScansScheduled && fullScanCycle > 0 && (getNumCoherentIncrementalScans(previousScans)+1)%fullScanCycle == 0 {
			incremental = false
		}

		return triggerScan(config, sys, project, incremental, influx, utils)
	}
	return nil
}

func triggerScan(config checkmarxExecuteScanOptions, sys checkmarx.System, project checkmarx.Project, incremental bool, influx *checkmarxExecuteScanInflux, utils checkmarxExecuteScanUtils) error {
	scan, err := sys.ScanProject(project.ID, incremental, true, !config.AvoidDuplicateProjectScans)
	if err != nil {
		return errors.Wrapf(err, "cannot scan project %v", project.Name)
	}

	log.Entry().Debugf("Scanning project %v ", project.Name)
	err = pollScanStatus(sys, scan)
	if err != nil {
		return errors.Wrap(err, "polling scan status failed")
	}

	log.Entry().Debugln("Scan finished")
	return verifyCxProjectCompliance(config, sys, scan.ID, influx, utils)
}

func verifyCxProjectCompliance(config checkmarxExecuteScanOptions, sys checkmarx.System, scanID int, influx *checkmarxExecuteScanInflux, utils checkmarxExecuteScanUtils) error {
	var reports []piperutils.Path
	if config.GeneratePdfReport {
		pdfReportName := createReportName(utils.GetWorkspace(), "CxSASTReport_%v.pdf")
		err := downloadAndSaveReport(sys, pdfReportName, scanID, utils)
		if err != nil {
			log.Entry().Warning("Report download failed - continue processing ...")
		} else {
			reports = append(reports, piperutils.Path{Target: pdfReportName, Mandatory: true})
		}
	} else {
		log.Entry().Debug("Report generation is disabled via configuration")
	}

	xmlReportName := createReportName(utils.GetWorkspace(), "CxSASTResults_%v.xml")
	results, err := getDetailedResults(sys, xmlReportName, scanID, utils)
	if err != nil {
		return errors.Wrap(err, "failed to get detailed results")
	}
	reports = append(reports, piperutils.Path{Target: xmlReportName})
	links := []piperutils.Path{{Target: results["DeepLink"].(string), Name: "Checkmarx Web UI"}}
	piperutils.PersistReportsAndLinks("checkmarxExecuteScan", utils.GetWorkspace(), reports, links)

	reportToInflux(results, influx)

	insecure := false
	if config.VulnerabilityThresholdEnabled {
		insecure = enforceThresholds(config, results)
	}

	if insecure {
		if config.VulnerabilityThresholdResult == "FAILURE" {
			log.SetErrorCategory(log.ErrorCompliance)
			return fmt.Errorf("the project is not compliant - see report for details")
		}
		log.Entry().Errorf("Checkmarx scan result set to %v, some results are not meeting defined thresholds. For details see the archived report.", config.VulnerabilityThresholdResult)
	} else {
		log.Entry().Infoln("Checkmarx scan finished successfully")
	}
	return nil
}

func createReportName(workspace, reportFileNameTemplate string) string {
	regExpFileName := regexp.MustCompile(`[^\w\d]`)
	timeStamp, _ := time.Now().Local().MarshalText()
	return filepath.Join(workspace, fmt.Sprintf(reportFileNameTemplate, regExpFileName.ReplaceAllString(string(timeStamp), "_")))
}

func pollScanStatus(sys checkmarx.System, scan checkmarx.Scan) error {
	status := "Scan phase: New"
	pastStatus := status
	log.Entry().Info(status)
	for true {
		stepDetail := "..."
		stageDetail := "..."
		var detail checkmarx.ScanStatusDetail
		status, detail = sys.GetScanStatusAndDetail(scan.ID)
		if status == "Finished" || status == "Canceled" || status == "Failed" {
			break
		}
		if len(detail.Stage) > 0 {
			stageDetail = detail.Stage
		}
		if len(detail.Step) > 0 {
			stepDetail = detail.Step
		}

		status = fmt.Sprintf("Scan phase: %v (%v / %v)", status, stageDetail, stepDetail)
		if pastStatus != status {
			log.Entry().Info(status)
			pastStatus = status
		}
		log.Entry().Debug("Polling for status: sleeping...")
		time.Sleep(10 * time.Second)
	}
	if status == "Canceled" {
		log.SetErrorCategory(log.ErrorCustom)
		return fmt.Errorf("scan canceled via web interface")
	}
	if status == "Failed" {
		return fmt.Errorf("scan failed, please check the Checkmarx UI for details")
	}
	return nil
}

func reportToInflux(results map[string]interface{}, influx *checkmarxExecuteScanInflux) {
	influx.checkmarx_data.fields.high_issues = results["High"].(map[string]int)["Issues"]
	influx.checkmarx_data.fields.high_not_false_postive = results["High"].(map[string]int)["NotFalsePositive"]
	influx.checkmarx_data.fields.high_not_exploitable = results["High"].(map[string]int)["NotExploitable"]
	influx.checkmarx_data.fields.high_confirmed = results["High"].(map[string]int)["Confirmed"]
	influx.checkmarx_data.fields.high_urgent = results["High"].(map[string]int)["Urgent"]
	influx.checkmarx_data.fields.high_proposed_not_exploitable = results["High"].(map[string]int)["ProposedNotExploitable"]
	influx.checkmarx_data.fields.high_to_verify = results["High"].(map[string]int)["ToVerify"]
	influx.checkmarx_data.fields.medium_issues = results["Medium"].(map[string]int)["Issues"]
	influx.checkmarx_data.fields.medium_not_false_postive = results["Medium"].(map[string]int)["NotFalsePositive"]
	influx.checkmarx_data.fields.medium_not_exploitable = results["Medium"].(map[string]int)["NotExploitable"]
	influx.checkmarx_data.fields.medium_confirmed = results["Medium"].(map[string]int)["Confirmed"]
	influx.checkmarx_data.fields.medium_urgent = results["Medium"].(map[string]int)["Urgent"]
	influx.checkmarx_data.fields.medium_proposed_not_exploitable = results["Medium"].(map[string]int)["ProposedNotExploitable"]
	influx.checkmarx_data.fields.medium_to_verify = results["Medium"].(map[string]int)["ToVerify"]
	influx.checkmarx_data.fields.low_issues = results["Low"].(map[string]int)["Issues"]
	influx.checkmarx_data.fields.low_not_false_postive = results["Low"].(map[string]int)["NotFalsePositive"]
	influx.checkmarx_data.fields.low_not_exploitable = results["Low"].(map[string]int)["NotExploitable"]
	influx.checkmarx_data.fields.low_confirmed = results["Low"].(map[string]int)["Confirmed"]
	influx.checkmarx_data.fields.low_urgent = results["Low"].(map[string]int)["Urgent"]
	influx.checkmarx_data.fields.low_proposed_not_exploitable = results["Low"].(map[string]int)["ProposedNotExploitable"]
	influx.checkmarx_data.fields.low_to_verify = results["Low"].(map[string]int)["ToVerify"]
	influx.checkmarx_data.fields.information_issues = results["Information"].(map[string]int)["Issues"]
	influx.checkmarx_data.fields.information_not_false_postive = results["Information"].(map[string]int)["NotFalsePositive"]
	influx.checkmarx_data.fields.information_not_exploitable = results["Information"].(map[string]int)["NotExploitable"]
	influx.checkmarx_data.fields.information_confirmed = results["Information"].(map[string]int)["Confirmed"]
	influx.checkmarx_data.fields.information_urgent = results["Information"].(map[string]int)["Urgent"]
	influx.checkmarx_data.fields.information_proposed_not_exploitable = results["Information"].(map[string]int)["ProposedNotExploitable"]
	influx.checkmarx_data.fields.information_to_verify = results["Information"].(map[string]int)["ToVerify"]
	influx.checkmarx_data.fields.initiator_name = results["InitiatorName"].(string)
	influx.checkmarx_data.fields.owner = results["Owner"].(string)
	influx.checkmarx_data.fields.scan_id = results["ScanId"].(string)
	influx.checkmarx_data.fields.project_id = results["ProjectId"].(string)
	influx.checkmarx_data.fields.projectName = results["ProjectName"].(string)
	influx.checkmarx_data.fields.team = results["Team"].(string)
	influx.checkmarx_data.fields.team_full_path_on_report_date = results["TeamFullPathOnReportDate"].(string)
	influx.checkmarx_data.fields.scan_start = results["ScanStart"].(string)
	influx.checkmarx_data.fields.scan_time = results["ScanTime"].(string)
	influx.checkmarx_data.fields.lines_of_code_scanned = results["LinesOfCodeScanned"].(int)
	influx.checkmarx_data.fields.files_scanned = results["FilesScanned"].(int)
	influx.checkmarx_data.fields.checkmarx_version = results["CheckmarxVersion"].(string)
	influx.checkmarx_data.fields.scan_type = results["ScanType"].(string)
	influx.checkmarx_data.fields.preset = results["Preset"].(string)
	influx.checkmarx_data.fields.deep_link = results["DeepLink"].(string)
	influx.checkmarx_data.fields.report_creation_time = results["ReportCreationTime"].(string)
}

func downloadAndSaveReport(sys checkmarx.System, reportFileName string, scanID int, utils checkmarxExecuteScanUtils) error {
	report, err := generateAndDownloadReport(sys, scanID, "PDF")
	if err != nil {
		return errors.Wrap(err, "failed to download the report")
	}
	log.Entry().Debugf("Saving report to file %v...", reportFileName)
	return utils.WriteFile(reportFileName, report, 0700)
}

func enforceThresholds(config checkmarxExecuteScanOptions, results map[string]interface{}) bool {
	insecure := false
	cxHighThreshold := config.VulnerabilityThresholdHigh
	cxMediumThreshold := config.VulnerabilityThresholdMedium
	cxLowThreshold := config.VulnerabilityThresholdLow
	highValue := results["High"].(map[string]int)["NotFalsePositive"]
	mediumValue := results["Medium"].(map[string]int)["NotFalsePositive"]
	lowValue := results["Low"].(map[string]int)["NotFalsePositive"]
	var unit string
	highViolation := ""
	mediumViolation := ""
	lowViolation := ""
	if config.VulnerabilityThresholdUnit == "percentage" {
		unit = "%"
		highAudited := results["High"].(map[string]int)["Issues"] - results["High"].(map[string]int)["NotFalsePositive"]
		highOverall := results["High"].(map[string]int)["Issues"]
		if highOverall == 0 {
			highAudited = 1
			highOverall = 1
		}
		mediumAudited := results["Medium"].(map[string]int)["Issues"] - results["Medium"].(map[string]int)["NotFalsePositive"]
		mediumOverall := results["Medium"].(map[string]int)["Issues"]
		if mediumOverall == 0 {
			mediumAudited = 1
			mediumOverall = 1
		}
		lowAudited := results["Low"].(map[string]int)["Confirmed"] + results["Low"].(map[string]int)["NotExploitable"]
		lowOverall := results["Low"].(map[string]int)["Issues"]
		if lowOverall == 0 {
			lowAudited = 1
			lowOverall = 1
		}
		highValue = int(float32(highAudited) / float32(highOverall) * 100.0)
		mediumValue = int(float32(mediumAudited) / float32(mediumOverall) * 100.0)
		lowValue = int(float32(lowAudited) / float32(lowOverall) * 100.0)

		if highValue < cxHighThreshold {
			insecure = true
			highViolation = fmt.Sprintf("<-- %v %v deviation", cxHighThreshold-highValue, unit)
		}
		if mediumValue < cxMediumThreshold {
			insecure = true
			mediumViolation = fmt.Sprintf("<-- %v %v deviation", cxMediumThreshold-mediumValue, unit)
		}
		if lowValue < cxLowThreshold {
			insecure = true
			lowViolation = fmt.Sprintf("<-- %v %v deviation", cxLowThreshold-lowValue, unit)
		}
	}
	if config.VulnerabilityThresholdUnit == "absolute" {
		unit = " findings"
		if highValue > cxHighThreshold {
			insecure = true
			highViolation = fmt.Sprintf("<-- %v%v deviation", highValue-cxHighThreshold, unit)
		}
		if mediumValue > cxMediumThreshold {
			insecure = true
			mediumViolation = fmt.Sprintf("<-- %v%v deviation", mediumValue-cxMediumThreshold, unit)
		}
		if lowValue > cxLowThreshold {
			insecure = true
			lowViolation = fmt.Sprintf("<-- %v%v deviation", lowValue-cxLowThreshold, unit)
		}
	}

	log.Entry().Infoln("")
	log.Entry().Infof("High %v%v %v", highValue, unit, highViolation)
	log.Entry().Infof("Medium %v%v %v", mediumValue, unit, mediumViolation)
	log.Entry().Infof("Low %v%v %v", lowValue, unit, lowViolation)
	log.Entry().Infoln("")

	return insecure
}

func createAndConfigureNewProject(sys checkmarx.System, projectName, teamID string, presetIDValue int, presetValue, engineConfiguration string) (checkmarx.Project, error) {
	if len(presetValue) == 0 {
		log.SetErrorCategory(log.ErrorConfiguration)
		return checkmarx.Project{}, fmt.Errorf("preset not specified, creation of project %v failed", projectName)
	}

	projectCreateResult, err := sys.CreateProject(projectName, teamID)
	if err != nil {
		return checkmarx.Project{}, errors.Wrapf(err, "cannot create project %v", projectName)
	}

	if err := setPresetForProject(sys, projectCreateResult.ID, presetIDValue, projectName, presetValue, engineConfiguration); err != nil {
		return checkmarx.Project{}, errors.Wrapf(err, "failed to set preset %v for project", presetValue)
	}

	projects, err := sys.GetProjectsByNameAndTeam(projectName, teamID)
	if err != nil || len(projects) == 0 {
		return checkmarx.Project{}, errors.Wrapf(err, "failed to load newly created project %v", projectName)
	}
	log.Entry().Debugf("New Project %v created", projectName)
	log.Entry().Debugf("Projects: %v", projects)
	return projects[0], nil
}

// loadPreset finds a checkmarx.Preset that has either the ID or Name given by presetValue.
// presetValue is not expected to be empty.
func loadPreset(sys checkmarx.System, presetValue string) (checkmarx.Preset, error) {
	presets := sys.GetPresets()
	var preset checkmarx.Preset
	var configuredPresetName string
	preset = sys.FilterPresetByName(presets, presetValue)
	configuredPresetName = presetValue
	if len(configuredPresetName) > 0 && preset.Name == configuredPresetName {
		log.Entry().Infof("Loaded preset %v", preset.Name)
		return preset, nil
	}
	log.Entry().Infof("Preset '%s' not found. Available presets are:", presetValue)
	for _, prs := range presets {
		log.Entry().Infof("preset id: %v, name: '%v'", prs.ID, prs.Name)
	}
	return checkmarx.Preset{}, fmt.Errorf("preset %v not found", preset.Name)
}

// setPresetForProject is only called when it has already been established that the preset needs to be set.
// It will exit via the logging framework in case the preset could be found, or the project could not be updated.
func setPresetForProject(sys checkmarx.System, projectID, presetIDValue int, projectName, presetValue, engineConfiguration string) error {
	presetID := presetIDValue
	if presetID <= 0 {
		preset, err := loadPreset(sys, presetValue)
		if err != nil {
			return errors.Wrapf(err, "preset %v not found, configuration of project %v failed", presetValue, projectName)
		}
		presetID = preset.ID
	}
	err := sys.UpdateProjectConfiguration(projectID, presetID, engineConfiguration)
	if err != nil {
		return errors.Wrapf(err, "updating configuration of project %v failed", projectName)
	}
	log.Entry().Debugf("Configuration of project %v updated", projectName)
	return nil
}

func generateAndDownloadReport(sys checkmarx.System, scanID int, reportType string) ([]byte, error) {
	report, err := sys.RequestNewReport(scanID, reportType)
	if err != nil {
		return []byte{}, errors.Wrap(err, "failed to request new report")
	}
	finalStatus := 1
	for {
		reportStatus, err := sys.GetReportStatus(report.ReportID)
		if err != nil {
			return []byte{}, errors.Wrap(err, "failed to get report status")
		}
		finalStatus = reportStatus.Status.ID
		if finalStatus != 1 {
			break
		}
		time.Sleep(10 * time.Second)
	}
	if finalStatus == 2 {
		return sys.DownloadReport(report.ReportID)
	}
	return []byte{}, fmt.Errorf("unexpected status %v recieved", finalStatus)
}

func getNumCoherentIncrementalScans(scans []checkmarx.ScanStatus) int {
	count := 0
	for _, scan := range scans {
		if !scan.IsIncremental {
			break
		}
		count++
	}
	return count
}

func getDetailedResults(sys checkmarx.System, reportFileName string, scanID int, utils checkmarxExecuteScanUtils) (map[string]interface{}, error) {
	resultMap := map[string]interface{}{}
	data, err := generateAndDownloadReport(sys, scanID, "XML")
	if err != nil {
		return resultMap, errors.Wrap(err, "failed to download xml report")
	}
	if len(data) > 0 {
		err = utils.WriteFile(reportFileName, data, 0700)
		if err != nil {
			return resultMap, errors.Wrap(err, "failed to write file")
		}
		var xmlResult checkmarx.DetailedResult
		err := xml.Unmarshal(data, &xmlResult)
		if err != nil {
			return resultMap, errors.Wrapf(err, "failed to unmarshal XML report for scan %v", scanID)
		}
		resultMap["InitiatorName"] = xmlResult.InitiatorName
		resultMap["Owner"] = xmlResult.Owner
		resultMap["ScanId"] = xmlResult.ScanID
		resultMap["ProjectId"] = xmlResult.ProjectID
		resultMap["ProjectName"] = xmlResult.ProjectName
		resultMap["Team"] = xmlResult.Team
		resultMap["TeamFullPathOnReportDate"] = xmlResult.TeamFullPathOnReportDate
		resultMap["ScanStart"] = xmlResult.ScanStart
		resultMap["ScanTime"] = xmlResult.ScanTime
		resultMap["LinesOfCodeScanned"] = xmlResult.LinesOfCodeScanned
		resultMap["FilesScanned"] = xmlResult.FilesScanned
		resultMap["CheckmarxVersion"] = xmlResult.CheckmarxVersion
		resultMap["ScanType"] = xmlResult.ScanType
		resultMap["Preset"] = xmlResult.Preset
		resultMap["DeepLink"] = xmlResult.DeepLink
		resultMap["ReportCreationTime"] = xmlResult.ReportCreationTime
		resultMap["High"] = map[string]int{}
		resultMap["Medium"] = map[string]int{}
		resultMap["Low"] = map[string]int{}
		resultMap["Information"] = map[string]int{}
		for _, query := range xmlResult.Queries {
			for _, result := range query.Results {
				key := result.Severity
				var submap map[string]int
				if resultMap[key] == nil {
					submap = map[string]int{}
					resultMap[key] = submap
				} else {
					submap = resultMap[key].(map[string]int)
				}
				submap["Issues"]++

				auditState := "ToVerify"
				switch result.State {
				case "1":
					auditState = "NotExploitable"
					break
				case "2":
					auditState = "Confirmed"
					break
				case "3":
					auditState = "Urgent"
					break
				case "4":
					auditState = "ProposedNotExploitable"
					break
				case "0":
				default:
					auditState = "ToVerify"
					break
				}
				submap[auditState]++

				if result.FalsePositive != "True" {
					submap["NotFalsePositive"]++
				}
			}
		}
	}
	return resultMap, nil
}

func zipFolder(source string, zipFile io.Writer, patterns []string, utils checkmarxExecuteScanUtils) error {
	archive := zip.NewWriter(zipFile)
	defer archive.Close()

	info, err := utils.Stat(source)
	if err != nil {
		return nil
	}

	var baseDir string
	if info.IsDir() {
		baseDir = filepath.Base(source)
	}

	fileCount := 0
	err = filepath.Walk(source, func(path string, info os.FileInfo, err error) error {
		if err != nil {
			return err
		}

		noMatch, err := isFileNotMatchingPattern(patterns, path, info, utils)
		if err != nil || noMatch {
			return err
		}

		header, err := utils.FileInfoHeader(info)
		if err != nil {
			return err
		}

		if baseDir != "" {
			header.Name = filepath.Join(baseDir, strings.TrimPrefix(path, source))
		}

		adaptHeader(info, header)

		writer, err := archive.CreateHeader(header)
		if err != nil || info.IsDir() {
			return err
		}

		file, err := utils.Open(path)
		if err != nil {
			return err
		}
		defer file.Close()
		_, err = io.Copy(writer, file)
		fileCount++
		return err
	})
	log.Entry().Infof("Zipped %d files", fileCount)
	err = handleZeroFilesZipped(source, err, fileCount)
	return err
}

func adaptHeader(info os.FileInfo, header *zip.FileHeader) {
	if info.IsDir() {
		header.Name += "/"
	} else {
		header.Method = zip.Deflate
	}
}

func handleZeroFilesZipped(source string, err error, fileCount int) error {
	if err == nil && fileCount == 0 {
		log.SetErrorCategory(log.ErrorConfiguration)
		err = fmt.Errorf("filterPattern matched no files or workspace directory '%s' was empty", source)
	}
	return err
}

// isFileNotMatchingPattern checks if file path does not match one of the patterns.
// If it matches a negative pattern (starting with '!') then true is returned.
//
// If it is a directory, false is returned.
// If no patterns are provided, false is returned.
func isFileNotMatchingPattern(patterns []string, path string, info os.FileInfo, utils checkmarxExecuteScanUtils) (bool, error) {
	if len(patterns) == 0 || info.IsDir() {
		return false, nil
	}

	for _, pattern := range patterns {
		negative := false
		if strings.HasPrefix(pattern, "!") {
			pattern = strings.TrimLeft(pattern, "!")
			negative = true
		}
		match, err := utils.PathMatch(pattern, path)
		if err != nil {
			return false, errors.Wrapf(err, "Pattern %v could not get executed", pattern)
		}

		if match {
			return negative, nil
		}
	}
	return true, nil
}