Add RPM file scanning support (#1188)

internal/formats/syftjson/model/package.go

@@ -74,7 +74,8 @@ func (p *Package) UnmarshalJSON(b []byte) error {
 
 //nolint:funlen,gocognit,gocyclo
 func unpackMetadata(p *Package, unpacker packageMetadataUnpacker) error {
-	p.MetadataType = unpacker.MetadataType
+	p.MetadataType = pkg.CleanMetadataType(unpacker.MetadataType)
+
 	switch p.MetadataType {
 	case "":
 		// there is no metadata, skip
@@ -91,8 +92,8 @@ func unpackMetadata(p *Package, unpacker packageMetadataUnpacker) error {
 			return err
 		}
 		p.Metadata = payload
-	case pkg.RpmdbMetadataType:
-		var payload pkg.RpmdbMetadata
+	case pkg.RpmMetadataType:
+		var payload pkg.RpmMetadata
 		if err := json.Unmarshal(unpacker.Metadata, &payload); err != nil {
 			return err
 		}

internal/formats/syftjson/model/package_test.go

@@ -133,6 +133,45 @@ func Test_unpackMetadata(t *testing.T) {
 				"purl": "pkg:golang/gopkg.in/square/go-jose.v2@v2.6.0"
 			}`),
 		},
+		{
+			name:         "can handle RpmdbMetadata",
+			metadataType: pkg.RpmMetadataType,
+			packageData: []byte(`{
+				"id": "4ac699c3b8fe1835",
+				"name": "acl",
+				"version": "2.2.53-1.el8",
+				"type": "rpm",
+				"foundBy": "rpm-db-cataloger",
+				"locations": [
+					{
+					 "path": "/var/lib/rpm/Packages",
+					 "layerID": "sha256:74ddd0ec08fa43d09f32636ba91a0a3053b02cb4627c35051aff89f853606b59"
+					}
+				],
+				"licenses": [
+					"GPLv2+"
+				],
+				"language": "",
+				"cpes": [
+					"cpe:2.3:a:centos:acl:2.2.53-1.el8:*:*:*:*:*:*:*",
+					"cpe:2.3:a:acl:acl:2.2.53-1.el8:*:*:*:*:*:*:*"
+				],
+				"purl": "pkg:rpm/centos/acl@2.2.53-1.el8?arch=x86_64&upstream=acl-2.2.53-1.el8.src.rpm&distro=centos-8",
+				"metadataType": "RpmdbMetadata",
+				"metadata": {
+					"name": "acl",
+					"version": "2.2.53",
+					"epoch": null,
+					"architecture": "x86_64",
+					"release": "1.el8",
+					"sourceRpm": "acl-2.2.53-1.el8.src.rpm",
+					"size": 205740,
+					"license": "GPLv2+",
+					"vendor": "CentOS",
+					"modularityLabel": ""
+				}
+			}`),
+		},
 		{
 			name:         "bad metadata type is an error",
 			metadataType: "BOGOSITY",