/
util.go
175 lines (158 loc) · 5.15 KB
/
util.go
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package image
import (
"encoding/json"
"sort"
"strings"
"github.com/fairwindsops/insights-plugins/plugins/trivy/pkg/models"
)
const DockerIOprefix = "docker.io/"
func GetMatchingImages(baseImages []models.ImageDetailsWithRefs, toMatch []models.Image, isRecommendation bool) []models.ImageDetailsWithRefs {
return getImages(baseImages, toMatch, isRecommendation, true)
}
func GetUnmatchingImages(baseImages []models.ImageDetailsWithRefs, toMatch []models.Image, isRecommendation bool) []models.ImageDetailsWithRefs {
return getImages(baseImages, toMatch, isRecommendation, false)
}
func getImages(baseImages []models.ImageDetailsWithRefs, toMatch []models.Image, isRecommendation bool, match bool) []models.ImageDetailsWithRefs {
filtered := make([]models.ImageDetailsWithRefs, 0)
isMatch := convertImagesToMap(toMatch)
isRepoMatch := imagesRepositoryMap(toMatch)
for _, im := range baseImages {
if !isRecommendation {
if im.RecommendationOnly || isMatch[im.GetUniqueID()] == match {
filtered = append(filtered, im)
}
} else {
// For recommendations, we match only on repo name, not on full image ID
parts := strings.Split(im.Name, ":")
key := GetRecommendationKey(parts[0], GetSpecificToken(parts[1]))
if !im.RecommendationOnly || isRepoMatch[key] == match {
filtered = append(filtered, im)
}
}
}
return filtered
}
func GetUnscannedImagesToScan(imagesInCluster []models.Image, lastReportImages []models.ImageDetailsWithRefs, maxScans int) []models.Image {
alreadyAdded := map[string]bool{}
alreadyScanned := convertImagesWithRefsToMap(lastReportImages)
imagesToScan := make([]models.Image, 0)
for _, img := range imagesInCluster {
if !alreadyScanned[img.GetUniqueID()] && !alreadyAdded[img.GetUniqueID()] {
imagesToScan = append(imagesToScan, img)
alreadyAdded[img.GetUniqueID()] = true
}
}
if len(imagesToScan) > maxScans {
imagesToScan = imagesToScan[:maxScans]
}
return imagesToScan
}
func GetImagesToReScan(images []models.Image, lastReport models.MinimizedReport, imagesToScan []models.Image, maxScans int) []models.Image {
sort.Slice(lastReport.Images, func(a, b int) bool {
return lastReport.Images[a].LastScan == nil || lastReport.Images[b].LastScan != nil && lastReport.Images[a].LastScan.Before(*lastReport.Images[b].LastScan)
})
for _, report := range lastReport.Images {
reportID := report.GetUniqueID()
if !report.RecommendationOnly {
for _, img := range images {
imageID := img.GetUniqueID()
if report.Name == img.Name && reportID == imageID {
if len(imagesToScan) < maxScans {
imagesToScan = append(imagesToScan, img)
break
} else {
return imagesToScan
}
}
}
}
}
return imagesToScan
}
func convertImagesToMap(list []models.Image) map[string]bool {
m := map[string]bool{}
for _, img := range list {
m[img.GetUniqueID()] = true
}
return m
}
func convertImagesWithRefsToMap(list []models.ImageDetailsWithRefs) map[string]bool {
m := map[string]bool{}
for _, img := range list {
m[img.GetUniqueID()] = true
}
return m
}
func imagesRepositoryMap(list []models.Image) map[string]bool {
m := map[string]bool{}
for _, img := range list {
parts := strings.Split(img.Name, ":")
if len(parts) == 2 {
key := GetRecommendationKey(parts[0], GetSpecificToken(parts[1]))
m[key] = true
}
}
return m
}
func UpdateOwnersReferenceOnMatchingImages(baseImages []models.ImageDetailsWithRefs, clusterImages []models.Image) []models.ImageDetailsWithRefs {
imageKeyToMap := map[string][]models.Resource{}
for _, i := range clusterImages {
imageKeyToMap[i.GetUniqueID()] = i.Owners
}
for i, img := range baseImages {
if owners, ok := imageKeyToMap[img.GetUniqueID()]; ok {
v2owners := []models.Resource{}
for _, o := range owners {
v2owners = append(v2owners, models.Resource{
Name: o.Name,
Kind: o.Kind,
Namespace: o.Namespace,
Container: o.Container,
})
}
baseImages[i].Owners = v2owners
}
}
return baseImages
}
func unmarshalAndFixReport(body []byte) (*models.MinimizedReport, error) {
var report models.MinimizedReport
err := json.Unmarshal(body, &report)
if err != nil {
return nil, err
}
fixOwners(&report)
normalizeDockerHubImages(&report)
return &report, nil
}
// fixOwners adapt older owners fields to the new ones
func fixOwners(report *models.MinimizedReport) {
for i := range report.Images {
img := &report.Images[i]
if hasDeprecatedOwnerFields(*img) {
var container string
if img.OwnerContainer != nil {
container = *img.OwnerContainer
}
img.Owners = []models.Resource{
{
Name: img.OwnerName,
Kind: img.OwnerKind,
Namespace: img.Namespace,
Container: container,
},
}
}
}
}
func hasDeprecatedOwnerFields(img models.ImageDetailsWithRefs) bool {
return len(img.OwnerName) != 0 || len(img.OwnerKind) != 0 || len(img.Namespace) != 0
}
// normalizeDockerHubImages removes the docker.io/ prefix from the image names and IDs
func normalizeDockerHubImages(report *models.MinimizedReport) {
for i := range report.Images {
img := &report.Images[i]
img.Name = strings.TrimPrefix(img.Name, DockerIOprefix)
img.ID = strings.TrimPrefix(img.ID, DockerIOprefix)
}
}