Files
trivy/pkg/scanner/library/scan.go
2019-10-31 12:26:02 +02:00

118 lines
3.5 KiB
Go

package library
import (
"os"
"path/filepath"
"github.com/aquasecurity/fanal/analyzer"
_ "github.com/aquasecurity/fanal/analyzer/library/bundler"
_ "github.com/aquasecurity/fanal/analyzer/library/cargo"
_ "github.com/aquasecurity/fanal/analyzer/library/composer"
_ "github.com/aquasecurity/fanal/analyzer/library/npm"
_ "github.com/aquasecurity/fanal/analyzer/library/pipenv"
_ "github.com/aquasecurity/fanal/analyzer/library/poetry"
_ "github.com/aquasecurity/fanal/analyzer/library/yarn"
"github.com/aquasecurity/fanal/extractor"
ptypes "github.com/aquasecurity/go-dep-parser/pkg/types"
"github.com/aquasecurity/trivy/pkg/log"
"github.com/aquasecurity/trivy/pkg/scanner/library/bundler"
"github.com/aquasecurity/trivy/pkg/scanner/library/cargo"
"github.com/aquasecurity/trivy/pkg/scanner/library/composer"
"github.com/aquasecurity/trivy/pkg/scanner/library/node"
"github.com/aquasecurity/trivy/pkg/scanner/library/python"
"github.com/aquasecurity/trivy/pkg/types"
"github.com/knqyf263/go-version"
"golang.org/x/xerrors"
)
type Scanner interface {
ParseLockfile(*os.File) ([]ptypes.Library, error)
Detect(string, *version.Version) ([]types.DetectedVulnerability, error)
Type() string
}
func NewScanner(filename string) Scanner {
var scanner Scanner
switch filename {
case "Gemfile.lock":
scanner = bundler.NewScanner()
case "Cargo.lock":
scanner = cargo.NewScanner()
case "composer.lock":
scanner = composer.NewScanner()
case "package-lock.json":
scanner = node.NewScanner(node.ScannerTypeNpm)
case "yarn.lock":
scanner = node.NewScanner(node.ScannerTypeYarn)
case "Pipfile.lock":
scanner = python.NewScanner(python.ScannerTypePipenv)
case "poetry.lock":
scanner = python.NewScanner(python.ScannerTypePoetry)
default:
return nil
}
return scanner
}
func Scan(files extractor.FileMap, scanOptions types.ScanOptions) (map[string][]types.DetectedVulnerability, error) {
results, err := analyzer.GetLibraries(files)
if err != nil {
return nil, xerrors.Errorf("failed to analyze libraries: %w", err)
}
vulnerabilities := map[string][]types.DetectedVulnerability{}
for path, pkgs := range results {
log.Logger.Debugf("Detecting library vulnerabilities, path: %s", path)
scanner := NewScanner(filepath.Base(string(path)))
if scanner == nil {
return nil, xerrors.New("unknown file type")
}
vulns, err := scan(scanner, pkgs)
if err != nil {
return nil, xerrors.Errorf("failed to scan %s vulnerabilities: %w", scanner.Type(), err)
}
vulnerabilities[string(path)] = vulns
}
return vulnerabilities, nil
}
func ScanFile(f *os.File) ([]types.DetectedVulnerability, error) {
scanner := NewScanner(filepath.Base(f.Name()))
if scanner == nil {
return nil, xerrors.New("unknown file type")
}
pkgs, err := scanner.ParseLockfile(f)
if err != nil {
return nil, err
}
vulns, err := scan(scanner, pkgs)
if err != nil {
return nil, err
}
return vulns, nil
}
func scan(scanner Scanner, pkgs []ptypes.Library) ([]types.DetectedVulnerability, error) {
log.Logger.Infof("Detecting %s vulnerabilities...", scanner.Type())
var vulnerabilities []types.DetectedVulnerability
for _, pkg := range pkgs {
v, err := version.NewVersion(pkg.Version)
if err != nil {
log.Logger.Debug(err)
continue
}
vulns, err := scanner.Detect(pkg.Name, v)
if err != nil {
return nil, xerrors.Errorf("failed to detect %s vulnerabilities: %w", scanner.Type(), err)
}
vulnerabilities = append(vulnerabilities, vulns...)
}
return vulnerabilities, nil
}