fix: consul classifier (#4741)

Signed-off-by: witchcraze <witchcraze@gmail.com>

syft/pkg/cataloger/binary/classifier_cataloger_test.go

@@ -1111,6 +1111,28 @@ func Test_Cataloger_PositiveCases(t *testing.T) {
 				Metadata:  metadata("consul-binary"),
 			},
 		},
+		{
+			logicalFixture: "consul/1.12.9/linux-amd64",
+			expected: pkg.Package{
+				Name:      "consul",
+				Version:   "1.12.9",
+				Type:      "binary",
+				PURL:      "pkg:golang/github.com/hashicorp/consul@1.12.9",
+				Locations: locations("consul"),
+				Metadata:  metadata("consul-binary"),
+			},
+		},
+		{
+			logicalFixture: "consul/1.7.14/linux-amd64",
+			expected: pkg.Package{
+				Name:      "consul",
+				Version:   "1.7.14",
+				Type:      "binary",
+				PURL:      "pkg:golang/github.com/hashicorp/consul@1.7.14",
+				Locations: locations("consul"),
+				Metadata:  metadata("consul-binary"),
+			},
+		},
 		{
 			logicalFixture: "vault/1.21.0-rc1/linux-amd64",
 			expected: pkg.Package{

syft/pkg/cataloger/binary/classifiers.go

@@ -468,9 +468,19 @@ func DefaultClassifiers() []binutils.Classifier {
 		{
 			Class:    "consul-binary",
 			FileGlob: "**/consul",
-			EvidenceMatcher: m.FileContentsVersionMatcher(
-				// NOTE: This is brittle and may not work for past or future versions
-				`CONSUL_VERSION: (?P<version>\d+\.\d+\.\d+)`,
+			EvidenceMatcher: binutils.MatchAny(
+				m.FileContentsVersionMatcher(
+					// NOTE: This is brittle and may not work for past or future versions
+					`CONSUL_VERSION: (?P<version>\d+\.\d+\.\d+)`,
+				),
+				m.FileContentsVersionMatcher(
+					// GitDescribe=1.12.9"
+					`GitDescribe=(?P<version>\d+\.\d+\.\d+)\"`,
+				),
+				m.FileContentsVersionMatcher(
+					// [NUL][NUL][NUL]v1.7.14[NUL][NUL][NUL]
+					`\x00+v(?P<version>\d+\.\d+\.\d+)\x00+`,
+				),
 			),
 			Package: "consul",
 			PURL:    mustPURL("pkg:golang/github.com/hashicorp/consul@version"),

syft/pkg/cataloger/binary/testdata/classifiers/snippets/consul/1.12.9/linux-amd64/consul

@@ -0,0 +1,14 @@
+name: consul
+offset: 52534344
+length: 220
+snippetSha256: ca576f5ee181015359ecf2a2d3b7431593816d510cb1fd03014998128ebfd54c
+fileSha256: fc2840fe55664ccc8c197debca3a2f09e907ef0a55cbf3d239d8ea63f66fc96d
+
+### byte snippet to follow ###
+
+build	-compiler=gc
+build	-ldflags="-X github.com/hashicorp/consul/version.GitCommit=96505027 -X github.com/hashicorp/consul/version.GitDescribe=1.12.9"
+build	CGO_ENABLED=0
+build	GOARCH=amd64
+build	GOOS=linux
+build	GOAMD

syft/pkg/cataloger/binary/testdata/config.yaml

@@ -797,6 +797,20 @@ from-images:
     paths:
       - /bin/consul
 
+  - version: 1.12.9
+    images:
+      - ref: hashicorp/consul:1.12.9@sha256:609cce8f5e22953c89e284ca3a763e1dfff0bae6a6169e4e0a0ce23dce82faa2
+        platform: linux/amd64
+    paths:
+      - /bin/consul
+
+  - version: 1.7.14
+    images:
+      - ref: hashicorp/consul:1.7.14@sha256:882bbcef624bd9b7d37228d891a5d9b2698be2a55b5a658fd1c4ffb643d1f30d
+        platform: linux/amd64
+    paths:
+      - /bin/consul
+
   - version: 1.21.0-rc1
     images:
       - ref: hashicorp/vault:1.21.0-rc1@sha256:67523b1e97acc26b050bb74abd251effe728bc3c1d7e80af19d251a511aa68ad