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sbom.go
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sbom.go
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// Copyright 2023 sigma
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package scan
import (
"bytes"
"context"
"encoding/json"
"fmt"
"os"
"os/exec"
"strings"
"time"
syftTypes "github.com/anchore/syft/syft/format/syftjson/model"
"github.com/anchore/syft/syft/source"
"github.com/google/uuid"
"github.com/rs/zerolog/log"
"github.com/go-sigma/sigma/pkg/configs"
"github.com/go-sigma/sigma/pkg/consts"
"github.com/go-sigma/sigma/pkg/dal/dao"
"github.com/go-sigma/sigma/pkg/dal/models"
"github.com/go-sigma/sigma/pkg/modules/workq"
"github.com/go-sigma/sigma/pkg/modules/workq/definition"
"github.com/go-sigma/sigma/pkg/types/enums"
"github.com/go-sigma/sigma/pkg/utils"
"github.com/go-sigma/sigma/pkg/utils/compress"
"github.com/go-sigma/sigma/pkg/utils/ptr"
"github.com/go-sigma/sigma/pkg/utils/token"
)
func init() {
workq.TopicHandlers[enums.DaemonSbom] = definition.Consumer{
Handler: decorator(runnerSbom),
MaxRetry: 1,
Concurrency: 10,
Timeout: time.Minute * 10,
}
}
// reportDistro ...
type reportDistro struct {
Name string `json:"name"`
Version string `json:"version"`
}
// reportSbom ...
type reportSbom struct {
Distro reportDistro `json:"distro"`
Os string `json:"os"`
Architecture string `json:"architecture"`
}
func runnerSbom(ctx context.Context, artifact *models.Artifact, statusChan chan decoratorArtifactStatus) error {
defer close(statusChan)
statusChan <- decoratorArtifactStatus{Daemon: enums.DaemonSbom, Status: enums.TaskCommonStatusDoing, Message: ""}
config := ptr.To(configs.GetConfiguration())
userService := dao.NewUserServiceFactory().New()
userObj, err := userService.GetByUsername(ctx, consts.UserInternal)
if err != nil {
return err
}
tokenService, err := token.NewTokenService(config.Auth.Jwt.PrivateKey)
if err != nil {
return err
}
authorization, err := tokenService.New(userObj.ID, config.Auth.Jwt.Ttl)
if err != nil {
return err
}
image := fmt.Sprintf("%s/%s@%s", utils.TrimHTTP(config.HTTP.InternalEndpoint), artifact.Repository.Name, artifact.Digest)
filename := fmt.Sprintf("%s.sbom.json", uuid.New().String())
cmd := exec.Command("syft", "scan", "-q", "-o", fmt.Sprintf("json=%s", filename), fmt.Sprintf("registry:%s", image)) // nolint: gosec
var stdout bytes.Buffer
var stderr bytes.Buffer
cmd.Stdout = &stdout
cmd.Stderr = &stderr
cmd.Env = append(cmd.Env, fmt.Sprintf("SYFT_REGISTRY_AUTH_TOKEN=%s", authorization))
if strings.HasPrefix(config.HTTP.InternalEndpoint, "http://") {
cmd.Env = append(cmd.Env, "SYFT_REGISTRY_INSECURE_USE_HTTP=true")
}
if strings.HasPrefix(config.HTTP.InternalEndpoint, "https://") {
cmd.Env = append(cmd.Env, "SYFT_REGISTRY_INSECURE_SKIP_TLS_VERIFY=true")
}
log.Info().Str("artifactDigest", artifact.Digest).Strs("env", cmd.Env).Str("cmd", cmd.String()).Msg("Start sbom artifact")
defer func() {
if utils.IsFile(filename) {
err := os.Remove(filename)
if err != nil {
log.Warn().Err(err).Msg("Remove file failed")
}
}
}()
err = cmd.Run()
if err != nil {
var stdoutBytes = stdout.Bytes()
var stderrBytes = stderr.Bytes()
log.Error().Err(err).Str("stdout", string(stdoutBytes)).Str("stderr", string(stderrBytes)).Msg("Run syft failed")
statusChan <- decoratorArtifactStatus{
Daemon: enums.DaemonSbom,
Status: enums.TaskCommonStatusFailed,
Stdout: stdoutBytes,
Stderr: stderrBytes,
Message: fmt.Sprintf("Run syft failed: %s", err.Error()),
}
return err
}
var syftObj syftTypes.Document
fileContent, err := os.Open(filename)
if err != nil {
log.Error().Err(err).Str("filename", filename).Msg("Open sbom file failed")
statusChan <- decoratorArtifactStatus{
Daemon: enums.DaemonSbom,
Status: enums.TaskCommonStatusFailed,
Stdout: []byte(""),
Stderr: []byte(""),
Message: fmt.Sprintf("Open sbom file(%s) failed: %v", filename, err),
}
return err
}
defer func() {
fileContent.Close() // nolint: errcheck
}()
err = json.NewDecoder(fileContent).Decode(&syftObj)
if err != nil {
log.Error().Err(err).Str("filename", filename).Msg("Decode sbom file failed")
statusChan <- decoratorArtifactStatus{
Daemon: enums.DaemonSbom,
Status: enums.TaskCommonStatusFailed,
Stdout: []byte(""),
Stderr: []byte(""),
Message: fmt.Sprintf("Decode sbom file(%s) failed: %v", filename, err),
}
return err
}
var report = reportSbom{
Distro: reportDistro{
Name: syftObj.Distro.ID,
Version: syftObj.Distro.VersionID,
},
}
syftMetadata, ok := syftObj.Source.Metadata.(source.ImageMetadata)
if ok {
report.Os = syftMetadata.OS
report.Architecture = syftMetadata.Architecture
}
reportBytes, err := json.Marshal(report)
if err != nil {
log.Error().Err(err).Msg("Marshal report failed")
statusChan <- decoratorArtifactStatus{Daemon: enums.DaemonVulnerability, Status: enums.TaskCommonStatusFailed, Message: err.Error()}
return err
}
compressed, err := compress.Compress(filename)
if err != nil {
log.Error().Err(err).Msg("Compress file failed")
statusChan <- decoratorArtifactStatus{Daemon: enums.DaemonSbom, Status: enums.TaskCommonStatusFailed, Message: err.Error()}
return err
}
log.Info().Str("artifactDigest", artifact.Digest).Msg("Success sbom artifact")
statusChan <- decoratorArtifactStatus{Daemon: enums.DaemonSbom, Status: enums.TaskCommonStatusSuccess, Message: "", Raw: compressed, Result: reportBytes}
return nil
}