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openstack.go
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openstack.go
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package scanner
import (
"encoding/json"
"errors"
"fmt"
sshconnect "github.com/drewbernetes/baski/pkg/remote"
"github.com/drewbernetes/baski/pkg/trivy"
"github.com/drewbernetes/baski/pkg/util/flags"
"github.com/drewbernetes/baski/pkg/util/interfaces"
simple_s3 "github.com/drewbernetes/simple-s3"
"github.com/gophercloud/gophercloud/openstack/compute/v2/extensions/keypairs"
"github.com/gophercloud/gophercloud/openstack/compute/v2/servers"
"github.com/gophercloud/gophercloud/openstack/imageservice/v2/images"
"github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/layer3/floatingips"
"log"
"os"
"time"
)
type OpenStackScannerClient struct {
BaseScanner
Img *images.Image
computeClient interfaces.OpenStackComputeClient
imageClient interfaces.OpenStackImageClient
networkClient interfaces.OpenStackNetworkClient
keyPair *keypairs.KeyPair
fip *floatingips.FloatingIP
s3Credentials *simple_s3.S3
server *servers.Server
severity trivy.Severity
}
// NewOpenStackScanner returns new scanner client.
func NewOpenStackScanner(c interfaces.OpenStackComputeClient, i interfaces.OpenStackImageClient, n interfaces.OpenStackNetworkClient, s3Conn *simple_s3.S3, severity trivy.Severity, img *images.Image) *OpenStackScannerClient {
return &OpenStackScannerClient{
computeClient: c,
imageClient: i,
networkClient: n,
s3Credentials: s3Conn,
severity: severity,
Img: img,
}
}
// RunScan builds the server for scanning and starts the scan
func (s *OpenStackScannerClient) RunScan(o *flags.ScanOptions) error {
trivyOptions := trivy.New(o.TrivyignorePath, o.TrivyignoreFilename, o.TrivyignoreList, s.severity)
err := s.getKeypair(s.Img.ID)
if err != nil {
return err
}
err = s.getFip(o.OpenStackFlags.FloatingIPNetworkName)
if err != nil {
return err
}
userData, err := trivyOptions.GenerateTrivyCommand(s.s3Credentials)
if err != nil {
return err
}
err = s.buildServer(o.OpenStackInstanceFlags.FlavorName, o.OpenStackInstanceFlags.NetworkID, s.Img.ID, o.OpenStackInstanceFlags.AttachConfigDrive, userData, []string{o.OpenStackFlags.SecurityGroup})
if err != nil {
return err
}
return nil
}
func (s *OpenStackScannerClient) FetchScanResults() error {
//TODO: We need to capture-ctl c and cleanup resources if it's hit.
client, err := sshconnect.NewSSHClient("ubuntu", s.keyPair.PrivateKey, s.fip.FloatingIP, "22")
if err != nil {
return err
}
err = fetchResultsFromServer(client, s.Img.ID)
if err != nil {
e := removeOpenStackResources(s.server.ID, s.keyPair.Name, s.fip, s.computeClient, s.networkClient)
if e != nil {
return e
}
return err
}
//Close SSH & SFTP connection
err = client.SFTPClose()
if err != nil {
return err
}
err = client.SSHClose()
if err != nil {
return err
}
// Cleanup the scanning resources
e := removeOpenStackResources(s.server.ID, s.keyPair.Name, s.fip, s.computeClient, s.networkClient)
if e != nil {
return e
}
return nil
}
// CheckResults checks the results file for vulnerabilitie-s and parses it into a more friendly format.
func (s *OpenStackScannerClient) CheckResults() error {
var err error
j := []byte("{}")
s.MetaTag = "passed"
s.ResultsFile = fmt.Sprintf("/tmp/%s.json", s.Img.ID)
s.Vulns, err = parsingVulnerabilities(s.ResultsFile)
if err != nil {
return err
}
if len(s.Vulns) != 0 {
j, err = json.Marshal(s.Vulns)
if err != nil {
return errors.New("couldn't marshall vulnerability trivyIgnoreFile: " + err.Error())
}
s.MetaTag = "failed"
}
// write the vulnerabilities into the results file
err = os.WriteFile(s.ResultsFile, j, os.FileMode(0644))
if err != nil {
return errors.New("couldn't write vulnerability trivyIgnoreFile to file: " + err.Error())
}
return nil
}
// TagImage Tags the image with the passed or failed property.
func (s *OpenStackScannerClient) TagImage() error {
err := s.imageClient.TagImage(s.Img.Properties, s.Img.ID, s.MetaTag, "security_scan")
if err != nil {
return err
}
return nil
}
// UploadResultsToS3 uploads the scan results to S3.
func (s *OpenStackScannerClient) UploadResultsToS3() error {
//Upload results to S3
f, err := os.Open(s.ResultsFile)
if err != nil {
return err
}
defer f.Close()
err = s.s3Credentials.Put(fmt.Sprintf("scans/%s/%s", s.Img.ID, "results.json"), f)
if err != nil {
return err
}
return nil
}
func (s *OpenStackScannerClient) getKeypair(imgID string) error {
kp, err := s.computeClient.CreateKeypair(imgID)
if err != nil {
return err
}
s.keyPair = kp
return nil
}
func (s *OpenStackScannerClient) getFip(fipNetworkName string) error {
fip, err := s.networkClient.GetFloatingIP(fipNetworkName)
if err != nil {
e := s.computeClient.RemoveKeypair(s.keyPair.Name)
if e != nil {
return e
}
return err
}
s.fip = fip
return nil
}
// buildServer is responsible for building the server
func (s *OpenStackScannerClient) buildServer(flavor, networkID, imgID string, attachConfigDrive bool, userData []byte, securityGroups []string) error {
server, err := s.computeClient.CreateServer(s.keyPair.Name, flavor, networkID, &attachConfigDrive, userData, imgID, securityGroups)
if err != nil {
e := s.computeClient.RemoveKeypair(s.keyPair.Name)
if e != nil {
return e
}
e = s.networkClient.RemoveFIP(s.fip.ID)
if e != nil {
return e
}
return err
}
state, err := s.computeClient.GetServerStatus(server.ID)
if err != nil {
e := removeOpenStackResources(server.ID, s.keyPair.Name, s.fip, s.computeClient, s.networkClient)
if e != nil {
return e
}
return err
}
checkLimit := 0
for !state {
if checkLimit > 100 {
panic(errors.New("server failed to com online after 500 seconds"))
}
log.Println("server not active, waiting 5 seconds and then checking again")
time.Sleep(5 * time.Second)
state, err = s.computeClient.GetServerStatus(server.ID)
if err != nil {
e := removeOpenStackResources(server.ID, s.keyPair.Name, s.fip, s.computeClient, s.networkClient)
if e != nil {
return e
}
return err
}
checkLimit++
}
err = s.computeClient.AttachIP(server.ID, s.fip.FloatingIP)
if err != nil {
e := removeOpenStackResources(server.ID, s.keyPair.Name, s.fip, s.computeClient, s.networkClient)
if e != nil {
return e
}
return err
}
s.server = server
return nil
}
// removeOpenStackResources cleans up the server and keypair from Openstack to ensure nothing is left lying around.
func removeOpenStackResources(serverID, keyName string, fip *floatingips.FloatingIP, c interfaces.OpenStackComputeClient, n interfaces.OpenStackNetworkClient) error {
err := c.RemoveServer(serverID)
if err != nil {
return err
}
err = c.RemoveKeypair(keyName)
if err != nil {
return err
}
err = n.RemoveFIP(fip.ID)
if err != nil {
return err
}
return nil
}