80 lines
2.7 KiB
Go
80 lines
2.7 KiB
Go
// +build !scanner
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package oval
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import (
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"encoding/json"
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"time"
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cnf "github.com/future-architect/vuls/config"
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"github.com/future-architect/vuls/models"
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"github.com/future-architect/vuls/util"
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"github.com/kotakanbe/goval-dictionary/db"
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"github.com/parnurzeal/gorequest"
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"golang.org/x/xerrors"
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)
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// Client is the interface of OVAL client.
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type Client interface {
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FillWithOval(db.DB, *models.ScanResult) (int, error)
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// CheckIfOvalFetched checks if oval entries are in DB by family, release.
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CheckIfOvalFetched(db.DB, string, string) (bool, error)
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CheckIfOvalFresh(db.DB, string, string) (bool, error)
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}
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// Base is a base struct
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type Base struct {
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family string
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}
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// CheckIfOvalFetched checks if oval entries are in DB by family, release.
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func (b Base) CheckIfOvalFetched(driver db.DB, osFamily, release string) (fetched bool, err error) {
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if !cnf.Conf.OvalDict.IsFetchViaHTTP() {
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count, err := driver.CountDefs(osFamily, release)
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if err != nil {
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return false, xerrors.Errorf("Failed to count OVAL defs: %s, %s, %w", osFamily, release, err)
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}
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return 0 < count, nil
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}
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url, _ := util.URLPathJoin(cnf.Conf.OvalDict.URL, "count", osFamily, release)
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resp, body, errs := gorequest.New().Get(url).End()
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if 0 < len(errs) || resp == nil || resp.StatusCode != 200 {
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return false, xerrors.Errorf("HTTP GET error, url: %s, resp: %v, err: %s", url, resp, errs)
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}
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count := 0
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if err := json.Unmarshal([]byte(body), &count); err != nil {
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return false, xerrors.Errorf("Failed to Unmarshal. body: %s, err: %w", body, err)
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}
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return 0 < count, nil
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}
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// CheckIfOvalFresh checks if oval entries are fresh enough
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func (b Base) CheckIfOvalFresh(driver db.DB, osFamily, release string) (ok bool, err error) {
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var lastModified time.Time
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if !cnf.Conf.OvalDict.IsFetchViaHTTP() {
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lastModified = driver.GetLastModified(osFamily, release)
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} else {
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url, _ := util.URLPathJoin(cnf.Conf.OvalDict.URL, "lastmodified", osFamily, release)
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resp, body, errs := gorequest.New().Get(url).End()
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if 0 < len(errs) || resp == nil || resp.StatusCode != 200 {
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return false, xerrors.Errorf("HTTP GET error, url: %s, resp: %v, err: %s", url, resp, errs)
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}
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if err := json.Unmarshal([]byte(body), &lastModified); err != nil {
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return false, xerrors.Errorf("Failed to Unmarshal. body: %s, err: %w", body, err)
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}
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}
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since := time.Now()
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since = since.AddDate(0, 0, -3)
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if lastModified.Before(since) {
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util.Log.Warnf("OVAL for %s %s is old, last modified is %s. It's recommended to update OVAL to improve scanning accuracy. How to update OVAL database, see https://github.com/kotakanbe/goval-dictionary#usage",
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osFamily, release, lastModified)
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return false, nil
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}
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util.Log.Infof("OVAL is fresh: %s %s ", osFamily, release)
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return true, nil
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}
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