Files
trivy/pkg/commands/artifact/image.go
2022-03-21 15:51:18 +02:00

112 lines
3.5 KiB
Go

package artifact
import (
"context"
"github.com/urfave/cli/v2"
"golang.org/x/xerrors"
"github.com/aquasecurity/fanal/analyzer"
"github.com/aquasecurity/trivy/pkg/scanner"
"github.com/aquasecurity/trivy/pkg/types"
)
// imageScanner initializes a container image scanner in standalone mode
// $ trivy image alpine:3.15
func imageScanner(ctx context.Context, conf scannerConfig) (scanner.Scanner, func(), error) {
dockerOpt, err := types.GetDockerOption(conf.ArtifactOption.InsecureSkipTLS)
if err != nil {
return scanner.Scanner{}, nil, err
}
s, cleanup, err := initializeDockerScanner(ctx, conf.Target, conf.ArtifactCache, conf.LocalArtifactCache,
dockerOpt, conf.ArtifactOption, conf.MisconfOption)
if err != nil {
return scanner.Scanner{}, func() {}, xerrors.Errorf("unable to initialize a docker scanner: %w", err)
}
return s, cleanup, nil
}
// archiveScanner initializes an image archive scanner in standalone mode
// $ trivy image --input alpine.tar
func archiveScanner(ctx context.Context, conf scannerConfig) (scanner.Scanner, func(), error) {
s, err := initializeArchiveScanner(ctx, conf.Target, conf.ArtifactCache, conf.LocalArtifactCache,
conf.ArtifactOption, conf.MisconfOption)
if err != nil {
return scanner.Scanner{}, func() {}, xerrors.Errorf("unable to initialize the archive scanner: %w", err)
}
return s, func() {}, nil
}
// remoteImageScanner initializes a container image scanner in client/server mode
// $ trivy image --server localhost:4954 alpine:3.15
func remoteImageScanner(ctx context.Context, conf scannerConfig) (
scanner.Scanner, func(), error) {
// Scan an image in Docker Engine, Docker Registry, etc.
dockerOpt, err := types.GetDockerOption(conf.ArtifactOption.InsecureSkipTLS)
if err != nil {
return scanner.Scanner{}, nil, err
}
s, cleanup, err := initializeRemoteDockerScanner(ctx, conf.Target, conf.ArtifactCache, conf.RemoteOption,
dockerOpt, conf.ArtifactOption, conf.MisconfOption)
if err != nil {
return scanner.Scanner{}, nil, xerrors.Errorf("unable to initialize the docker scanner: %w", err)
}
return s, cleanup, nil
}
// remoteArchiveScanner initializes an image archive scanner in client/server mode
// $ trivy image --server localhost:4954 --input alpine.tar
func remoteArchiveScanner(ctx context.Context, conf scannerConfig) (scanner.Scanner, func(), error) {
// Scan tar file
s, err := initializeRemoteArchiveScanner(ctx, conf.Target, conf.ArtifactCache, conf.RemoteOption,
conf.ArtifactOption, conf.MisconfOption)
if err != nil {
return scanner.Scanner{}, nil, xerrors.Errorf("unable to initialize the archive scanner: %w", err)
}
return s, func() {}, nil
}
// ImageRun runs scan on container image
func ImageRun(ctx *cli.Context) error {
opt, err := initOption(ctx)
if err != nil {
return xerrors.Errorf("option error: %w", err)
}
// Disable the lock file scanning
opt.DisabledAnalyzers = analyzer.TypeLockfiles
if opt.Input != "" {
return archiveImageRun(ctx.Context, opt)
}
return imageRun(ctx.Context, opt)
}
func archiveImageRun(ctx context.Context, opt Option) error {
// standalone mode
scanner := archiveScanner
if opt.RemoteAddr != "" {
// client/server mode
scanner = remoteArchiveScanner
}
// scan tar file
return Run(ctx, opt, scanner, initCache)
}
func imageRun(ctx context.Context, opt Option) error {
// standalone mode
scanner := imageScanner
if opt.RemoteAddr != "" {
// client/server mode
scanner = remoteImageScanner
}
// scan container image
return Run(ctx, opt, scanner, initCache)
}