support .kar files

syft/pkg/cataloger/java/archive_filename.go

@@ -108,7 +108,7 @@ func (a archiveFilename) extension() string {
 
 func (a archiveFilename) pkgType() pkg.Type {
 	switch strings.ToLower(a.extension()) {
-	case "jar", "war", "ear", "lpkg", "par", "sar", "nar":
+	case "jar", "war", "ear", "lpkg", "par", "sar", "nar", "kar":
 		return pkg.JavaPkg
 	case "jpi", "hpi":
 		return pkg.JenkinsPluginPkg

syft/pkg/cataloger/java/archive_filename_test.go

@@ -86,6 +86,13 @@ func TestExtractInfoFromJavaArchiveFilename(t *testing.T) {
 			name:      "pkg-extra-field-maven",
 			ty:        pkg.JavaPkg,
 		},
+		{
+			filename:  "pkg-extra-field-maven-4.3.2-rc1.kar",
+			version:   "4.3.2-rc1",
+			extension: "kar",
+			name:      "pkg-extra-field-maven",
+			ty:        pkg.JavaPkg,
+		},
 		{
 			filename:  "/some/path/pkg-extra-field-maven-4.3.2-rc1.jpi",
 			version:   "4.3.2-rc1",

syft/pkg/cataloger/java/archive_parser.go

@@ -31,6 +31,7 @@ var archiveFormatGlobs = []string{
 	"**/*.nar",
 	"**/*.jpi",
 	"**/*.hpi",
+	"**/*.kar",
 	"**/*.lpkg", // Zip-compressed package used to deploy applications
 	// (aka plugins) to Liferay Portal server. Those files contains .JAR(s) and a .PROPERTIES file, the latter
 	// has information about the application and installation requirements.

syft/pkg/cataloger/java/cataloger_test.go

@@ -23,6 +23,7 @@ func Test_ArchiveCataloger_Globs(t *testing.T) {
 				"java-archives/example.par",
 				"java-archives/example.sar",
 				"java-archives/example.nar",
+				"java-archives/example.kar",
 				"java-archives/example.jpi",
 				"java-archives/example.hpi",
 				"java-archives/example.lpkg",

syft/pkg/cataloger/java/test-fixtures/glob-paths/java-archives/example.kar

@@ -0,0 +1 @@
+example archive