Add GitLab cataloger

Signed-off-by: Ryan <ryanhopk@protonmail.com>

syft/pkg/cataloger/gitlab/cataloger.go

@@ -0,0 +1,15 @@
+package gitlab
+
+import (
+	"github.com/anchore/syft/syft/pkg/cataloger/generic"
+)
+
+const (
+	catalogerName       = "gitlab-cataloger"
+	versionManifestGlob = "**/opt/gitlab/version-manifest.json"
+)
+
+func NewGitLabCataloger() *generic.Cataloger {
+	return generic.NewCataloger(catalogerName).
+		WithParserByGlobs(parseVersionManifest, versionManifestGlob)
+}

syft/pkg/cataloger/gitlab/parse_manifest.go

@@ -0,0 +1,96 @@
+package gitlab
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"strings"
+
+	"github.com/anchore/packageurl-go"
+	"github.com/anchore/syft/syft/artifact"
+	"github.com/anchore/syft/syft/file"
+	"github.com/anchore/syft/syft/pkg"
+	"github.com/anchore/syft/syft/pkg/cataloger/generic"
+)
+
+type versionManifest struct {
+	ManifestFormat   int                        `json:"manifest_format"`
+	Software         map[string]manifestPackage `json:"software"`
+	BuildVersion     string                     `json:"build_version"`
+	BuildGitRevision string                     `json:"build_git_revision"`
+	License          string                     `json:"license"`
+}
+
+type manifestPackage struct {
+	LockedVersion    *string       `json:"locked_version"`
+	LockedSource     *lockedSource `json:"locked_source"`
+	SourceType       *string       `json:"url"`
+	DescribedVersion *string       `json:"described_version"`
+	DisplayVersion   *string       `json:"display_version"`
+	Vendor           *string       `json:"vendor"`
+	License          *string       `json:"license"`
+}
+
+type lockedSource struct {
+	Git    string `json:"git"`
+	URL    string `json:"url"`
+	Sha256 string `json:"sha256"`
+}
+
+func parseVersionManifest(_ context.Context, _ file.Resolver, _ *generic.Environment, reader file.LocationReadCloser) ([]pkg.Package, []artifact.Relationship, error) {
+	bytes, err := io.ReadAll(reader)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to load version-manifest.json file: %w", err)
+	}
+
+	var pkgs []pkg.Package
+	var manifest versionManifest
+	err = json.Unmarshal(bytes, &manifest)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to parse version-manifest.json file: %w", err)
+	}
+
+	for pkgName, pkgData := range manifest.Software {
+		p := pkg.Package{
+			Name:      pkgName,
+			Locations: file.NewLocationSet(reader.Location),
+		}
+
+		if pkgData.DisplayVersion != nil {
+			p.Version = *pkgData.DisplayVersion
+		}
+		if pkgData.License != nil {
+			p.Licenses = pkg.NewLicenseSet(pkg.NewLicense(*pkgData.License))
+		}
+		if pkgData.LockedSource != nil && (*pkgData.SourceType == "git" || *pkgData.SourceType == "url") {
+			var purl packageurl.PackageURL
+			if *pkgData.SourceType == "git" {
+				purl.Type = "gitlab"
+				gitUrlComponents := strings.Split(pkgData.LockedSource.Git, "/")
+				// Namespace is the user or organization
+				purl.Namespace = strings.Split(gitUrlComponents[0], ":")[1]
+				// Name is the repository name (with .git sliced out)
+				purl.Name = gitUrlComponents[1][:len(gitUrlComponents[1])-4]
+			} else {
+				purl.Type = "generic"
+				purl.Qualifiers = append(
+					purl.Qualifiers,
+					packageurl.Qualifier{
+						Key:   "download_url",
+						Value: pkgData.LockedSource.URL,
+					},
+					packageurl.Qualifier{
+						Key:   "checksum",
+						Value: pkgData.LockedSource.Sha256,
+					})
+			}
+		}
+
+		pkgs = append(pkgs, p)
+	}
+
+	pkg.Sort(pkgs)
+
+	return pkgs, nil, nil
+}

syft/pkg/cataloger/gitlab/parse_manifest_test.go

@@ -0,0 +1,26 @@
+package gitlab
+
+import (
+	"testing"
+
+	"github.com/anchore/syft/syft/file"
+	"github.com/anchore/syft/syft/pkg"
+	"github.com/anchore/syft/syft/pkg/cataloger/internal/pkgtest"
+)
+
+func TestParseVersionManifestFile(t *testing.T) {
+	fixture := "test-fixtures/glob-paths/opt/gitlab/version-manifest.json"
+	locations := file.NewLocationSet(file.NewLocation(fixture))
+
+	var expectedPkg = pkg.Package{
+		Name:      "openssl",
+		Version:   "1.1.1q",
+		Locations: locations,
+		Licenses: pkg.NewLicenseSet(
+			pkg.NewLicenseFromLocations("OpenSSL"),
+		),
+		PURL: "pkg:gitlab/omnibus-mirror/openssl",
+	}
+
+	pkgtest.TestFileParser(t, fixture, parseVersionManifest, []pkg.Package{expectedPkg}, nil)
+}

syft/pkg/cataloger/gitlab/test-fixtures/glob-paths/opt/gitlab/version-manifest.json

@@ -0,0 +1,19 @@
+{
+    "manifest_format": 2,
+    "software": {
+        "openssl": {
+            "locked_version": "29708a562a1887a91de0fa6ca668c71871accde9",
+            "locked_source": {
+                "git": "git@dev.gitlab.org:omnibus-mirror/openssl.git"
+            },
+            "source_type": "git",
+            "described_version": "OpenSSL_1_1_1q",
+            "display_version": "1.1.1q",
+            "vendor": "openssl",
+            "license": "OpenSSL"
+        }
+    },
+    "build_version": "15.6.1",
+    "build_git_revision": "e3d1cd74ef1abe2b9514d8aa64c065b434becd3a",
+    "license": "MIT"
+}