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composer.go
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composer.go
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package composer
import (
"context"
"github.com/google/uuid"
"github.com/murphysecurity/murphysec/model"
"github.com/murphysecurity/murphysec/utils"
"go.uber.org/zap"
"io/fs"
"path/filepath"
"strings"
)
const _ComposerManifestFileSizeLimit = 4 * 1024 * 1024 // 4MiB
const _ComposerLockFileSizeLimit = _ComposerManifestFileSizeLimit
type Inspector struct{}
func (i *Inspector) SupportFeature(feature model.InspectorFeature) bool {
return false
}
func (i *Inspector) String() string {
return "Composer"
}
func (i *Inspector) CheckDir(dir string) bool {
return utils.IsFile(filepath.Join(dir, "composer.json"))
}
func (i *Inspector) InspectProject(ctx context.Context) error {
logger := utils.UseLogger(ctx)
task := model.UseInspectorTask(ctx)
dir := task.ScanDir
manifest, e := readManifest(ctx, filepath.Join(dir, "composer.json"))
if e != nil {
return e
}
module := &model.Module{
PackageManager: model.PMComposer,
Language: model.PHP,
Name: manifest.Name,
Version: manifest.Version,
RelativePath: filepath.Join(dir, "composer.json"),
Dependencies: []model.Dependency{},
RuntimeInfo: nil,
UUID: uuid.UUID{},
}
lockfilePkgs := map[string]Package{}
{
if !utils.IsPathExist(filepath.Join(dir, "composer.lock")) {
logger.Info("composer.lock doesn't exists. Try to generate it")
if e := doComposerInstall(context.TODO(), dir); e != nil {
logger.Sugar().Warnf("Do composer install fail. %s", e.Error())
} else {
logger.Sugar().Info("Do composer install succeeded")
}
}
composerLockFilePath := filepath.Join(dir, "composer.lock")
logger.Debug("Reading composer.lock", zap.String("path", composerLockFilePath))
pkgs, e := readComposerLockFile(composerLockFilePath)
if e != nil {
logger.Sugar().Infof("Read composer lock file failed: %s", e.Error())
}
pkgs = append(pkgs, vendorScan(ctx, filepath.Join(dir, "vendor"))...)
for _, it := range pkgs {
lockfilePkgs[it.Name] = it
}
}
for _, requiredPkg := range manifest.Require {
node := _buildDepTree(lockfilePkgs, map[string]struct{}{}, requiredPkg.Name, requiredPkg.Version)
if node != nil {
module.Dependencies = append(module.Dependencies, *node)
}
}
if module.Name == "" && module.Version == "" && len(module.Dependencies) == 0 {
return nil
}
task.AddModule(*module)
return nil
}
func _buildDepTree(lockfile map[string]Package, visitedDep map[string]struct{}, targetName string, versionConstraint string) *model.Dependency {
if _, ok := visitedDep[targetName]; ok || len(visitedDep) > 3 {
return nil
}
visitedDep[targetName] = struct{}{}
defer delete(visitedDep, targetName)
rs := &model.Dependency{
Name: targetName,
Version: versionConstraint,
}
pkg := lockfile[rs.Name]
if targetName == "php" || (strings.HasPrefix(targetName, "ext-") && (pkg.Version == "*" || pkg.Version == "" || versionConstraint == "*")) {
return nil
}
if pkg.Version == "" {
return rs // fallback
}
rs.Version = pkg.Version
for _, requiredPkgName := range pkg.Require {
node := _buildDepTree(lockfile, visitedDep, requiredPkgName, "") // ignore transitive dependency version constraint
if node != nil {
rs.Dependencies = append(rs.Dependencies, *node)
}
}
return rs
}
type Element struct {
Name string
Version string
}
type Package struct {
Element
Require []string
}
type Manifest struct {
Element
Require []Element
}
func vendorScan(ctx context.Context, dir string) []Package {
logger := utils.UseLogger(ctx)
logger.Debug("vendorScan", zap.String("dir", dir))
defer logger.Debug("vendorScan terminated")
var rs []Package
filepath.Walk(dir, func(path string, info fs.FileInfo, err error) error {
if info == nil {
return nil
}
if info.Name() == "composer.json" {
m, e := readManifest(ctx, path)
if e != nil {
return nil
}
var p Package
p.Name = m.Name
p.Version = m.Version
for _, it := range m.Require {
p.Require = append(p.Require, it.Name)
}
rs = append(rs, p)
}
return nil
})
return rs
}