feat: gradle lockfile support

syft/pkg/cataloger/cataloger.go

@@ -73,6 +73,7 @@ func DirectoryCatalogers(cfg Config) []pkg.Cataloger {
 		java.NewJavaCataloger(cfg.Java()),
 		java.NewJavaPomCataloger(),
 		java.NewNativeImageCataloger(),
+		java.NewJavaGradleLockfileCataloger(),
 		apkdb.NewApkdbCataloger(),
 		golang.NewGoModuleBinaryCataloger(cfg.Go()),
 		golang.NewGoModFileCataloger(cfg.Go()),
@@ -107,6 +108,7 @@ func AllCatalogers(cfg Config) []pkg.Cataloger {
 		java.NewJavaCataloger(cfg.Java()),
 		java.NewJavaPomCataloger(),
 		java.NewNativeImageCataloger(),
+		java.NewJavaGradleLockfileCataloger(),
 		apkdb.NewApkdbCataloger(),
 		golang.NewGoModuleBinaryCataloger(cfg.Go()),
 		golang.NewGoModFileCataloger(cfg.Go()),

syft/pkg/cataloger/java/archive_parser_test.go

@@ -159,10 +159,39 @@ func TestParseJar(t *testing.T) {
 						Manifest: &pkg.JavaManifest{
 							Main: map[string]string{
 								"Manifest-Version": "1.0",
+								"Main-Class":       "hello.HelloWorld",
 							},
 						},
 					},
 				},
+				"joda-time": {
+					Name:         "joda-time",
+					Version:      "2.2",
+					PURL:         "pkg:maven/joda-time/joda-time@2.2",
+					Language:     pkg.Java,
+					Type:         pkg.JavaPkg,
+					MetadataType: pkg.JavaMetadataType,
+					Metadata: pkg.JavaMetadata{
+						// ensure that nested packages with different names than that of the parent are appended as
+						// a suffix on the virtual path
+						VirtualPath: "test-fixtures/java-builds/packages/example-java-app-gradle-0.1.0.jar:joda-time",
+						PomProperties: &pkg.PomProperties{
+							Path:       "META-INF/maven/joda-time/joda-time/pom.properties",
+							GroupID:    "joda-time",
+							ArtifactID: "joda-time",
+							Version:    "2.2",
+						},
+						PomProject: &pkg.PomProject{
+							Path:        "META-INF/maven/joda-time/joda-time/pom.xml",
+							GroupID:     "joda-time",
+							ArtifactID:  "joda-time",
+							Version:     "2.2",
+							Name:        "Joda time",
+							Description: "Date and time library to replace JDK date handling",
+							URL:         "http://joda-time.sourceforge.net",
+						},
+					},
+				},
 			},
 		},
 		{

syft/pkg/cataloger/java/cataloger.go

@@ -31,3 +31,11 @@ func NewJavaPomCataloger() *generic.Cataloger {
 	return generic.NewCataloger("java-pom-cataloger").
 		WithParserByGlobs(parserPomXML, "**/pom.xml")
 }
+
+// NewJavaGradleLockfileCataloger returns a cataloger capable of parsing
+// dependencies from a gradle.lockfile file.
+// older versions of lockfiles aren't supported yet
+func NewJavaGradleLockfileCataloger() *generic.Cataloger {
+	return generic.NewCataloger("java-gradle-lockfile-cataloger").
+		WithParserByGlobs(parseGradleLockfile, gradleLockfileGlob)
+}

syft/pkg/cataloger/java/parse_gradle_lockfile.go

@@ -0,0 +1,63 @@
+package java
+
+import (
+	"bufio"
+	"strings"
+
+	"github.com/anchore/syft/syft/artifact"
+	"github.com/anchore/syft/syft/pkg"
+	"github.com/anchore/syft/syft/pkg/cataloger/generic"
+	"github.com/anchore/syft/syft/source"
+)
+
+const gradleLockfileGlob = "**/gradle.lockfile*"
+
+// Dependency represents a single dependency in the gradle.lockfile file
+type LockfileDependency struct {
+	Group   string
+	Name    string
+	Version string
+}
+
+func parseGradleLockfile(_ source.FileResolver, _ *generic.Environment, reader source.LocationReadCloser) ([]pkg.Package, []artifact.Relationship, error) {
+	var pkgs []pkg.Package
+
+	// Create a new scanner to read the file
+	scanner := bufio.NewScanner(reader)
+
+	// Create slices to hold the dependencies and plugins
+	dependencies := []LockfileDependency{}
+
+	// Loop over all lines in the file
+	for scanner.Scan() {
+		line := scanner.Text()
+
+		// Trim leading and trailing whitespace from the line
+		line = strings.TrimSpace(line)
+
+		groupNameVersion := line
+		groupNameVersion = strings.Split(groupNameVersion, "=")[0]
+		parts := strings.Split(groupNameVersion, ":")
+
+		// we have a version directly specified
+		if len(parts) == 3 {
+			// Create a new Dependency struct and add it to the dependencies slice
+			dep := LockfileDependency{Group: parts[0], Name: parts[1], Version: parts[2]}
+			dependencies = append(dependencies, dep)
+		}
+	}
+	// map the dependencies
+	for _, dep := range dependencies {
+		mappedPkg := pkg.Package{
+			Name:         dep.Name,
+			Version:      dep.Version,
+			Locations:    source.NewLocationSet(reader.Location),
+			Language:     pkg.Java,
+			Type:         pkg.JavaPkg,
+			MetadataType: pkg.JavaMetadataType,
+		}
+		pkgs = append(pkgs, mappedPkg)
+	}
+
+	return pkgs, nil, nil
+}

syft/pkg/cataloger/java/parse_gradle_lockfile_test.go

@@ -0,0 +1,52 @@
+package java
+
+import (
+	"testing"
+
+	"github.com/anchore/syft/syft/pkg"
+	"github.com/anchore/syft/syft/pkg/cataloger/internal/pkgtest"
+	"github.com/anchore/syft/syft/source"
+)
+
+func Test_parserGradleLockfile(t *testing.T) {
+	tests := []struct {
+		input    string
+		expected []pkg.Package
+	}{
+		{
+			input: "test-fixtures/gradle/gradle.lockfile",
+			expected: []pkg.Package{
+				{
+					Name:         "hamcrest-core",
+					Version:      "1.3",
+					Language:     pkg.Java,
+					Type:         pkg.JavaPkg,
+					MetadataType: pkg.JavaMetadataType,
+				},
+				{
+					Name:         "joda-time",
+					Version:      "2.2",
+					Language:     pkg.Java,
+					Type:         pkg.JavaPkg,
+					MetadataType: pkg.JavaMetadataType,
+				},
+				{
+					Name:         "junit",
+					Version:      "4.12",
+					Language:     pkg.Java,
+					Type:         pkg.JavaPkg,
+					MetadataType: pkg.JavaMetadataType,
+				},
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.input, func(t *testing.T) {
+			for i := range test.expected {
+				test.expected[i].Locations.Add(source.NewLocation(test.input))
+			}
+			pkgtest.TestFileParser(t, test.input, parseGradleLockfile, test.expected, nil)
+		})
+	}
+}

syft/pkg/cataloger/java/test-fixtures/gradle/.gitignore

@@ -0,0 +1 @@
+.gradle

syft/pkg/cataloger/java/test-fixtures/gradle/build.gradle

@@ -0,0 +1,58 @@
+plugins {
+    id 'java'
+    id 'eclipse'
+    id 'application'
+}
+
+mainClassName = 'hello.HelloWorld'
+
+dependencyLocking {
+    lockAllConfigurations()
+}
+// tag::repositories[]
+repositories {
+    mavenCentral()
+}
+// end::repositories[]
+
+// tag::dependencies[]
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
+
+dependencies {
+    implementation "joda-time:joda-time:2.2"
+    testImplementation "junit:junit:4.12"
+}
+// end::dependencies[]
+
+// tag::jar[]
+jar {
+    archivesBaseName = 'example-java-app-gradle'
+    version =  '0.1.0'
+    manifest {
+        attributes(
+        'Main-Class': 'hello.HelloWorld'
+        )
+    }
+    from {
+        configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
+    }
+}
+// end::jar[]
+
+// tag::wrapper[]
+// end::wrapper[]
+
+// to invoke: gradle resolveAndLockAll --write-locks
+tasks.register('resolveAndLockAll') {
+    notCompatibleWithConfigurationCache("Filters configurations at execution time")
+    doFirst {
+        assert gradle.startParameter.writeDependencyLocks
+    }
+    doLast {
+        configurations.findAll {
+            // Add any custom filtering on the configurations to be resolved
+            it.canBeResolved
+        }.each { it.resolve() }
+    }
+}

syft/pkg/cataloger/java/test-fixtures/gradle/gradle.lockfile

@@ -0,0 +1,7 @@
+# This is a Gradle generated file for dependency locking.
+# Manual edits can break the build and are not advised.
+# This file is expected to be part of source control.
+joda-time:joda-time:2.2=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
+junit:junit:4.12=testCompileClasspath,testRuntimeClasspath
+org.hamcrest:hamcrest-core:1.3=testCompileClasspath,testRuntimeClasspath
+empty=annotationProcessor,testAnnotationProcessor

syft/pkg/cataloger/java/test-fixtures/java-builds/build-example-java-app-gradle.sh

@@ -4,7 +4,7 @@ set -uxe
 # note: this can be easily done in a 1-liner, however circle CI does NOT allow volume mounts from the host in docker executors (since they are on remote hosts, where the host files are inaccessible)
 
 PKGSDIR=$1
-CTRID=$(docker create -u "$(id -u):$(id -g)" -v /example-java-app -w /example-java-app gradle:6.8.3-jdk gradle build)
+CTRID=$(docker create -u "$(id -u):$(id -g)" -v /example-java-app -w /example-java-app gradle:8.0.2-jdk gradle build)
 
 function cleanup() {
   docker rm "${CTRID}"

syft/pkg/cataloger/java/test-fixtures/java-builds/example-java-app/build.gradle

@@ -1,31 +1,58 @@
-apply plugin: 'java'
-apply plugin: 'eclipse'
-apply plugin: 'application'
+plugins {
+    id 'java'
+    id 'eclipse'
+    id 'application'
+}
 
 mainClassName = 'hello.HelloWorld'
 
+dependencyLocking {
+    lockAllConfigurations()
+}
 // tag::repositories[]
 repositories {
     mavenCentral()
 }
 // end::repositories[]
 
-// tag::jar[]
-jar {
-    baseName = 'example-java-app-gradle'
-    version =  '0.1.0'
-}
-// end::jar[]
-
 // tag::dependencies[]
 sourceCompatibility = 1.8
 targetCompatibility = 1.8
 
 dependencies {
-    compile "joda-time:joda-time:2.2"
-    testCompile "junit:junit:4.12"
+    implementation "joda-time:joda-time:2.2"
+    testImplementation "junit:junit:4.12"
 }
 // end::dependencies[]
 
+// tag::jar[]
+jar {
+    archivesBaseName = 'example-java-app-gradle'
+    version =  '0.1.0'
+    manifest {
+        attributes(
+        'Main-Class': 'hello.HelloWorld'
+        )
+    }
+    from {
+        configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
+    }
+}
+// end::jar[]
+
 // tag::wrapper[]
-// end::wrapper[]
+// end::wrapper[]
+
+// to invoke: gradle resolveAndLockAll --write-locks
+tasks.register('resolveAndLockAll') {
+    notCompatibleWithConfigurationCache("Filters configurations at execution time")
+    doFirst {
+        assert gradle.startParameter.writeDependencyLocks
+    }
+    doLast {
+        configurations.findAll {
+            // Add any custom filtering on the configurations to be resolved
+            it.canBeResolved
+        }.each { it.resolve() }
+    }
+}

syft/pkg/cataloger/java/test-fixtures/java-builds/example-java-app/gradle.lockfile

@@ -0,0 +1,7 @@
+# This is a Gradle generated file for dependency locking.
+# Manual edits can break the build and are not advised.
+# This file is expected to be part of source control.
+joda-time:joda-time:2.2=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
+junit:junit:4.12=testCompileClasspath,testRuntimeClasspath
+org.hamcrest:hamcrest-core:1.3=testCompileClasspath,testRuntimeClasspath
+empty=annotationProcessor,testAnnotationProcessor