Refactoring (minor)
This commit is contained in:
Eric Sim
parent
8e98ee878a
commit
684ae2be1d
@ -26,6 +26,7 @@ import (
|
||||
|
||||
log "github.com/sirupsen/logrus"
|
||||
|
||||
"fmt"
|
||||
"github.com/coreos/clair/database"
|
||||
"github.com/coreos/clair/ext/versionfmt"
|
||||
"github.com/coreos/clair/ext/versionfmt/rpm"
|
||||
@ -35,50 +36,55 @@ import (
|
||||
)
|
||||
|
||||
const (
|
||||
amazonLinux1Name = "Amazon Linux 2018.03"
|
||||
amazonLinux1Namespace = "amzn:2018.03"
|
||||
amazonLinux1UpdaterFlag = "amazonLinux1Updater"
|
||||
amazonLinux1MirrorListURI = "http://repo.us-west-2.amazonaws.com/2018.03/updates/x86_64/mirror.list"
|
||||
amazonLinux2Name = "Amazon Linux 2"
|
||||
amazonLinux2Namespace = "amzn:2"
|
||||
amazonLinux1Name = "Amazon Linux 2018.03"
|
||||
amazonLinux1Namespace = "amzn:2018.03"
|
||||
amazonLinux1LinkFormat = "https://alas.aws.amazon.com/%s.html"
|
||||
amazonLinux2UpdaterFlag = "amazonLinux2Updater"
|
||||
amazonLinux2MirrorListURI = "https://cdn.amazonlinux.com/2/core/latest/x86_64/mirror.list"
|
||||
amazonLinux2Name = "Amazon Linux 2"
|
||||
amazonLinux2Namespace = "amzn:2"
|
||||
amazonLinux2LinkFormat = "https://alas.aws.amazon.com/AL2/%s.html"
|
||||
)
|
||||
|
||||
type updater struct {
|
||||
Name string
|
||||
Namespace string
|
||||
UpdaterFlag string
|
||||
MirrorListURI string
|
||||
Name string
|
||||
Namespace string
|
||||
LinkFormat string
|
||||
}
|
||||
|
||||
func init() {
|
||||
// Register updater for Amazon Linux 2018.03.
|
||||
amazonLinux1Updater := updater{
|
||||
Name: amazonLinux1Name,
|
||||
Namespace: amazonLinux1Namespace,
|
||||
UpdaterFlag: amazonLinux1UpdaterFlag,
|
||||
MirrorListURI: amazonLinux1MirrorListURI,
|
||||
Name: amazonLinux1Name,
|
||||
Namespace: amazonLinux1Namespace,
|
||||
LinkFormat: amazonLinux1LinkFormat,
|
||||
}
|
||||
vulnsrc.RegisterUpdater("amzn", &amazonLinux1Updater)
|
||||
vulnsrc.RegisterUpdater("amzn1", &amazonLinux1Updater)
|
||||
|
||||
// Register updater for Amazon Linux 2.
|
||||
amazonLinux2Updater := updater{
|
||||
Name: amazonLinux2Name,
|
||||
Namespace: amazonLinux2Namespace,
|
||||
UpdaterFlag: amazonLinux2UpdaterFlag,
|
||||
MirrorListURI: amazonLinux2MirrorListURI,
|
||||
Name: amazonLinux2Name,
|
||||
Namespace: amazonLinux2Namespace,
|
||||
LinkFormat: amazonLinux2LinkFormat,
|
||||
}
|
||||
vulnsrc.RegisterUpdater("amzn2", &amazonLinux2Updater)
|
||||
}
|
||||
|
||||
func (u *updater) Update(datastore database.Datastore) (response vulnsrc.UpdateResponse, err error) {
|
||||
func (u *updater) Update(datastore database.Datastore) (vulnsrc.UpdateResponse, error) {
|
||||
log.WithField("package", u.Name).Info("Start fetching vulnerabilities")
|
||||
|
||||
// Get the flag value (the timestamp of the latest ALAS of the previous update).
|
||||
flagValue, found, err := database.FindKeyValueAndRollback(datastore, u.UpdaterFlag)
|
||||
if err != nil {
|
||||
return response, err
|
||||
return vulnsrc.UpdateResponse{}, err
|
||||
}
|
||||
|
||||
if !found {
|
||||
@ -90,7 +96,7 @@ func (u *updater) Update(datastore database.Datastore) (response vulnsrc.UpdateR
|
||||
// Get the ALASs from updateinfo.xml.gz from the repos.
|
||||
updateInfo, err := u.getUpdateInfo()
|
||||
if err != nil {
|
||||
return response, err
|
||||
return vulnsrc.UpdateResponse{}, err
|
||||
}
|
||||
|
||||
// Get the ALASs which were issued/updated since the previous update.
|
||||
@ -106,9 +112,10 @@ func (u *updater) Update(datastore database.Datastore) (response vulnsrc.UpdateR
|
||||
}
|
||||
|
||||
// Get the vulnerabilities.
|
||||
response.Vulnerabilities, err = u.alasListToVulnerabilities(alasList)
|
||||
if err != nil {
|
||||
return response, err
|
||||
vulnerabilities := u.alasListToVulnerabilities(alasList)
|
||||
|
||||
response := vulnsrc.UpdateResponse{
|
||||
Vulnerabilities: vulnerabilities,
|
||||
}
|
||||
|
||||
// Set the flag value.
|
||||
@ -126,56 +133,56 @@ func (u *updater) Clean() {
|
||||
|
||||
}
|
||||
|
||||
func (u *updater) getUpdateInfo() (updateInfo UpdateInfo, err error) {
|
||||
func (u *updater) getUpdateInfo() (UpdateInfo, error) {
|
||||
// Get the URI of updateinfo.xml.gz.
|
||||
updateInfoURI, err := u.getUpdateInfoURI()
|
||||
if err != nil {
|
||||
return updateInfo, err
|
||||
return UpdateInfo{}, err
|
||||
}
|
||||
|
||||
// Download updateinfo.xml.gz.
|
||||
updateInfoResponse, err := httputil.GetWithUserAgent(updateInfoURI)
|
||||
if err != nil {
|
||||
log.WithError(err).Error("could not download updateinfo.xml.gz")
|
||||
return updateInfo, commonerr.ErrCouldNotDownload
|
||||
return UpdateInfo{}, commonerr.ErrCouldNotDownload
|
||||
}
|
||||
defer updateInfoResponse.Body.Close()
|
||||
|
||||
if !httputil.Status2xx(updateInfoResponse) {
|
||||
log.WithField("StatusCode", updateInfoResponse.StatusCode).Error("could not download updateinfo.xml.gz")
|
||||
return updateInfo, commonerr.ErrCouldNotDownload
|
||||
return UpdateInfo{}, commonerr.ErrCouldNotDownload
|
||||
}
|
||||
|
||||
// Decompress updateinfo.xml.gz.
|
||||
updateInfoXml, err := gzip.NewReader(updateInfoResponse.Body)
|
||||
if err != nil {
|
||||
log.WithError(err).Error("could not decompress updateinfo.xml.gz")
|
||||
return updateInfo, commonerr.ErrCouldNotDownload
|
||||
return UpdateInfo{}, commonerr.ErrCouldNotParse
|
||||
}
|
||||
defer updateInfoXml.Close()
|
||||
|
||||
// Decode updateinfo.xml.
|
||||
updateInfo, err = decodeUpdateInfo(updateInfoXml)
|
||||
updateInfo, err := decodeUpdateInfo(updateInfoXml)
|
||||
if err != nil {
|
||||
log.WithError(err).Error("could not decode updateinfo.xml")
|
||||
return updateInfo, err
|
||||
return UpdateInfo{}, commonerr.ErrCouldNotParse
|
||||
}
|
||||
|
||||
return
|
||||
return updateInfo, nil
|
||||
}
|
||||
|
||||
func (u *updater) getUpdateInfoURI() (updateInfoURI string, err error) {
|
||||
func (u *updater) getUpdateInfoURI() (string, error) {
|
||||
// Download mirror.list
|
||||
mirrorListResponse, err := httputil.GetWithUserAgent(u.MirrorListURI)
|
||||
if err != nil {
|
||||
log.WithError(err).Error("could not download mirror list")
|
||||
return updateInfoURI, commonerr.ErrCouldNotDownload
|
||||
return "", commonerr.ErrCouldNotDownload
|
||||
}
|
||||
defer mirrorListResponse.Body.Close()
|
||||
|
||||
if !httputil.Status2xx(mirrorListResponse) {
|
||||
log.WithField("StatusCode", mirrorListResponse.StatusCode).Error("could not download mirror list")
|
||||
return updateInfoURI, commonerr.ErrCouldNotDownload
|
||||
return "", commonerr.ErrCouldNotDownload
|
||||
}
|
||||
|
||||
// Parse the URI of the first mirror.
|
||||
@ -191,13 +198,13 @@ func (u *updater) getUpdateInfoURI() (updateInfoURI string, err error) {
|
||||
repoMdResponse, err := httputil.GetWithUserAgent(repoMdURI)
|
||||
if err != nil {
|
||||
log.WithError(err).Error("could not download repomd.xml")
|
||||
return updateInfoURI, commonerr.ErrCouldNotDownload
|
||||
return "", commonerr.ErrCouldNotDownload
|
||||
}
|
||||
defer repoMdResponse.Body.Close()
|
||||
|
||||
if !httputil.Status2xx(repoMdResponse) {
|
||||
log.WithField("StatusCode", repoMdResponse.StatusCode).Error("could not download repomd.xml")
|
||||
return updateInfoURI, commonerr.ErrCouldNotDownload
|
||||
return "", commonerr.ErrCouldNotDownload
|
||||
}
|
||||
|
||||
// Decode repomd.xml.
|
||||
@ -205,10 +212,11 @@ func (u *updater) getUpdateInfoURI() (updateInfoURI string, err error) {
|
||||
err = xml.NewDecoder(repoMdResponse.Body).Decode(&repoMd)
|
||||
if err != nil {
|
||||
log.WithError(err).Error("could not decode repomd.xml")
|
||||
return updateInfoURI, commonerr.ErrCouldNotDownload
|
||||
return "", commonerr.ErrCouldNotDownload
|
||||
}
|
||||
|
||||
// Parse the URI of updateinfo.xml.gz.
|
||||
var updateInfoURI string
|
||||
for _, repo := range repoMd.RepoList {
|
||||
if repo.Type == "updateinfo" {
|
||||
updateInfoURI = mirrorURI + "/" + repo.Location.Href
|
||||
@ -217,22 +225,24 @@ func (u *updater) getUpdateInfoURI() (updateInfoURI string, err error) {
|
||||
}
|
||||
if updateInfoURI == "" {
|
||||
log.Error("could not find updateinfo in repomd.xml")
|
||||
return updateInfoURI, commonerr.ErrCouldNotDownload
|
||||
return "", commonerr.ErrCouldNotDownload
|
||||
}
|
||||
|
||||
return
|
||||
return updateInfoURI, nil
|
||||
}
|
||||
|
||||
func decodeUpdateInfo(updateInfoReader io.Reader) (updateInfo UpdateInfo, err error) {
|
||||
err = xml.NewDecoder(updateInfoReader).Decode(&updateInfo)
|
||||
func decodeUpdateInfo(updateInfoReader io.Reader) (UpdateInfo, error) {
|
||||
var updateInfo UpdateInfo
|
||||
err := xml.NewDecoder(updateInfoReader).Decode(&updateInfo)
|
||||
if err != nil {
|
||||
return updateInfo, err
|
||||
}
|
||||
|
||||
return
|
||||
return updateInfo, nil
|
||||
}
|
||||
|
||||
func (u *updater) alasListToVulnerabilities(alasList []ALAS) (vulnerabilities []database.VulnerabilityWithAffected, err error) {
|
||||
func (u *updater) alasListToVulnerabilities(alasList []ALAS) []database.VulnerabilityWithAffected {
|
||||
var vulnerabilities []database.VulnerabilityWithAffected
|
||||
for _, alas := range alasList {
|
||||
featureVersions := u.alasToFeatureVersions(alas)
|
||||
if len(featureVersions) > 0 {
|
||||
@ -249,7 +259,7 @@ func (u *updater) alasListToVulnerabilities(alasList []ALAS) (vulnerabilities []
|
||||
}
|
||||
}
|
||||
|
||||
return
|
||||
return vulnerabilities
|
||||
}
|
||||
|
||||
func (u *updater) alasToName(alas ALAS) string {
|
||||
@ -258,12 +268,16 @@ func (u *updater) alasToName(alas ALAS) string {
|
||||
|
||||
func (u *updater) alasToLink(alas ALAS) string {
|
||||
if u.Name == amazonLinux1Name {
|
||||
return "https://alas.aws.amazon.com/" + alas.Id + ".html"
|
||||
return fmt.Sprintf(u.LinkFormat, alas.Id)
|
||||
}
|
||||
|
||||
// "ALAS2-2018-1097" becomes "https://alas.aws.amazon.com/AL2/ALAS-2018-1097.html".
|
||||
re := regexp.MustCompile(`^ALAS2-(.+)$`)
|
||||
return "https://alas.aws.amazon.com/AL2/ALAS-" + re.FindStringSubmatch(alas.Id)[1] + ".html"
|
||||
if u.Name == amazonLinux2Name {
|
||||
// "ALAS2-2018-1097" becomes "https://alas.aws.amazon.com/AL2/ALAS-2018-1097.html".
|
||||
re := regexp.MustCompile(`^ALAS2-(.+)$`)
|
||||
return fmt.Sprintf(u.LinkFormat, "ALAS-"+re.FindStringSubmatch(alas.Id)[1])
|
||||
}
|
||||
|
||||
return ""
|
||||
}
|
||||
|
||||
func (u *updater) alasToSeverity(alas ALAS) database.Severity {
|
||||
@ -287,7 +301,8 @@ func (u *updater) alasToDescription(alas ALAS) string {
|
||||
return re.ReplaceAllString(strings.TrimSpace(alas.Description), " ")
|
||||
}
|
||||
|
||||
func (u *updater) alasToFeatureVersions(alas ALAS) (featureVersions []database.AffectedFeature) {
|
||||
func (u *updater) alasToFeatureVersions(alas ALAS) []database.AffectedFeature {
|
||||
var featureVersions []database.AffectedFeature
|
||||
for _, p := range alas.Packages {
|
||||
var version string
|
||||
if p.Epoch == "0" {
|
||||
@ -301,20 +316,24 @@ func (u *updater) alasToFeatureVersions(alas ALAS) (featureVersions []database.A
|
||||
continue
|
||||
}
|
||||
|
||||
var featureVersion database.AffectedFeature
|
||||
featureVersion.Namespace.Name = u.Namespace
|
||||
featureVersion.Namespace.VersionFormat = rpm.ParserName
|
||||
featureVersion.FeatureName = p.Name
|
||||
featureVersion.AffectedVersion = version
|
||||
featureVersion := database.AffectedFeature{
|
||||
Namespace: database.Namespace{
|
||||
Name: u.Namespace,
|
||||
VersionFormat: rpm.ParserName,
|
||||
},
|
||||
FeatureName: p.Name,
|
||||
AffectedVersion: version,
|
||||
AffectedType: database.AffectBinaryPackage,
|
||||
}
|
||||
|
||||
if version != versionfmt.MaxVersion {
|
||||
featureVersion.FixedInVersion = version
|
||||
}
|
||||
featureVersion.AffectedType = database.AffectBinaryPackage
|
||||
|
||||
featureVersions = append(featureVersions, featureVersion)
|
||||
}
|
||||
|
||||
return
|
||||
return featureVersions
|
||||
}
|
||||
|
||||
func compareTimestamp(date0 string, date1 string) int {
|
||||
|
||||
@ -28,10 +28,11 @@ import (
|
||||
|
||||
func TestAmazonLinux1(t *testing.T) {
|
||||
amazonLinux1Updater := updater{
|
||||
MirrorListURI: "http://repo.us-west-2.amazonaws.com/2018.03/updates/x86_64/mirror.list",
|
||||
Name: "Amazon Linux 2018.03",
|
||||
Namespace: "amzn:2018.03",
|
||||
UpdaterFlag: "amazonLinux1Updater",
|
||||
MirrorListURI: "http://repo.us-west-2.amazonaws.com/2018.03/updates/x86_64/mirror.list",
|
||||
LinkFormat: "https://alas.aws.amazon.com/%s.html",
|
||||
}
|
||||
|
||||
_, filename, _, _ := runtime.Caller(0)
|
||||
@ -49,8 +50,7 @@ func TestAmazonLinux1(t *testing.T) {
|
||||
updateInfo, err := decodeUpdateInfo(updateInfoXml)
|
||||
assert.Nil(t, err)
|
||||
|
||||
vulnerabilities, err := amazonLinux1Updater.alasListToVulnerabilities(updateInfo.ALASList)
|
||||
assert.Nil(t, err)
|
||||
vulnerabilities := amazonLinux1Updater.alasListToVulnerabilities(updateInfo.ALASList)
|
||||
|
||||
assert.Equal(t, "ALAS-2011-1", vulnerabilities[0].Name)
|
||||
assert.Equal(t, "https://alas.aws.amazon.com/ALAS-2011-1.html", vulnerabilities[0].Link)
|
||||
@ -121,10 +121,11 @@ func TestAmazonLinux1(t *testing.T) {
|
||||
|
||||
func TestAmazonLinux2(t *testing.T) {
|
||||
amazonLinux2Updater := updater{
|
||||
MirrorListURI: "https://cdn.amazonlinux.com/2/core/latest/x86_64/mirror.list",
|
||||
Name: "Amazon Linux 2",
|
||||
Namespace: "amzn:2",
|
||||
UpdaterFlag: "amazonLinux2Updater",
|
||||
MirrorListURI: "https://cdn.amazonlinux.com/2/core/latest/x86_64/mirror.list",
|
||||
LinkFormat: "https://alas.aws.amazon.com/AL2/%s.html",
|
||||
}
|
||||
|
||||
_, filename, _, _ := runtime.Caller(0)
|
||||
@ -142,8 +143,7 @@ func TestAmazonLinux2(t *testing.T) {
|
||||
updateInfo, err := decodeUpdateInfo(updateInfoXml)
|
||||
assert.Nil(t, err)
|
||||
|
||||
vulnerabilities, err := amazonLinux2Updater.alasListToVulnerabilities(updateInfo.ALASList)
|
||||
assert.Nil(t, err)
|
||||
vulnerabilities := amazonLinux2Updater.alasListToVulnerabilities(updateInfo.ALASList)
|
||||
|
||||
assert.Equal(t, "ALAS2-2018-939", vulnerabilities[0].Name)
|
||||
assert.Equal(t, "https://alas.aws.amazon.com/AL2/ALAS-2018-939.html", vulnerabilities[0].Link)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user