feat: haproxy binary matcher (#1591)

Signed-off-by: Benji Visser <benji@093b.org>

syft/pkg/cataloger/binary/cataloger_test.go

@@ -207,6 +207,42 @@ func Test_Cataloger_DefaultClassifiers_PositiveCases(t *testing.T) {
 				Metadata:  metadata("perl-binary"),
 			},
 		},
+		{
+			name:       "positive-haproxy-1.5.14",
+			fixtureDir: "test-fixtures/classifiers/positive/haproxy-1.5.14",
+			expected: pkg.Package{
+				Name:      "haproxy",
+				Version:   "1.5.14",
+				Type:      "binary",
+				PURL:      "pkg:generic/haproxy@1.5.14",
+				Locations: locations("haproxy"),
+				Metadata:  metadata("haproxy-binary"),
+			},
+		},
+		{
+			name:       "positive-haproxy-1.8.22",
+			fixtureDir: "test-fixtures/classifiers/positive/haproxy-1.8.22",
+			expected: pkg.Package{
+				Name:      "haproxy",
+				Version:   "1.8.22",
+				Type:      "binary",
+				PURL:      "pkg:generic/haproxy@1.8.22",
+				Locations: locations("haproxy"),
+				Metadata:  metadata("haproxy-binary"),
+			},
+		},
+		{
+			name:       "positive-haproxy-2.7.3",
+			fixtureDir: "test-fixtures/classifiers/positive/haproxy-2.7.3",
+			expected: pkg.Package{
+				Name:      "haproxy",
+				Version:   "2.7.3",
+				Type:      "binary",
+				PURL:      "pkg:generic/haproxy@2.7.3",
+				Locations: locations("haproxy"),
+				Metadata:  metadata("haproxy-binary"),
+			},
+		},
 		{
 			name:       "positive-redis-2.8.23",
 			fixtureDir: "test-fixtures/classifiers/positive/redis-server-2.8.23",

syft/pkg/cataloger/binary/classifier.go

@@ -51,6 +51,21 @@ type classifier struct {
 // evidenceMatcher is a function called to catalog Packages that match some sort of evidence
 type evidenceMatcher func(classifier classifier, reader source.LocationReadCloser) ([]pkg.Package, error)
 
+func evidenceMatchers(matchers ...evidenceMatcher) evidenceMatcher {
+	return func(classifier classifier, reader source.LocationReadCloser) ([]pkg.Package, error) {
+		for _, matcher := range matchers {
+			match, err := matcher(classifier, reader)
+			if err != nil {
+				return nil, err
+			}
+			if match != nil {
+				return match, nil
+			}
+		}
+		return nil, nil
+	}
+}
+
 func fileNameTemplateVersionMatcher(fileNamePattern string, contentTemplate string) evidenceMatcher {
 	pat := regexp.MustCompile(fileNamePattern)
 	return func(classifier classifier, reader source.LocationReadCloser) ([]pkg.Package, error) {

syft/pkg/cataloger/binary/default_classifiers.go

@@ -120,6 +120,17 @@ var defaultClassifiers = []classifier{
 		Package: "busybox",
 		CPEs:    singleCPE("cpe:2.3:a:busybox:busybox:*:*:*:*:*:*:*:*"),
 	},
+	{
+		Class:    "haproxy-binary",
+		FileGlob: "**/haproxy",
+		EvidenceMatcher: evidenceMatchers(
+			fileContentsVersionMatcher(`(?m)HA-Proxy version (?P<version>[0-9]+\.[0-9]+\.[0-9]+)`),
+			fileContentsVersionMatcher(`(?m)(?P<version>[0-9]+\.[0-9]+\.[0-9]+)-[0-9a-zA-Z]{7}.+HAProxy version`),
+		),
+		Package: "haproxy",
+		PURL:    mustPURL("pkg:generic/haproxy@version"),
+		CPEs:    singleCPE("cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*"),
+	},
 	{
 		Class:    "perl-binary",
 		FileGlob: "**/perl",

syft/pkg/cataloger/binary/test-fixtures/classifiers/positive/haproxy-1.5.14/haproxy

@@ -0,0 +1 @@
+HA-Proxy version 1.5.14 2015/07/02Copyright 2000-2015 Willy Tarreau <willy@haproxy.org>