chore(deps): bump github.com/vifraa/gopom from 0.2.2 to 1.0.0 (#2008)

* chore(deps): bump github.com/vifraa/gopom from 0.2.2 to 1.0.0
* refactor: update consumer code to use new optional values

Bumps [github.com/vifraa/gopom](https://github.com/vifraa/gopom) from 0.2.2 to 1.0.0.
- [Release notes](https://github.com/vifraa/gopom/releases)
- [Commits](https://github.com/vifraa/gopom/compare/v0.2.2...v1.0.0)

---
updated-dependencies:
- dependency-name: github.com/vifraa/gopom
  dependency-type: direct:production
  update-type: version-update:semver-major
...
---------

Signed-off-by: dependabot[bot] <support@github.com>
Signed-off-by: Christopher Phillips <christopher.phillips@anchore.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Christopher Phillips <christopher.phillips@anchore.com>

go.mod

@@ -37,7 +37,7 @@ require (
 	github.com/spf13/pflag v1.0.5
 	github.com/spf13/viper v1.16.0
 	github.com/stretchr/testify v1.8.4
-	github.com/vifraa/gopom v0.2.2
+	github.com/vifraa/gopom v1.0.0
 	github.com/wagoodman/go-partybus v0.0.0-20230516145632-8ccac152c651
 	github.com/wagoodman/go-progress v0.0.0-20230301185719-21920a456ad5
 	github.com/xeipuuv/gojsonschema v1.2.0

go.sum

@@ -687,8 +687,8 @@ github.com/vbatts/go-mtree v0.5.3 h1:S/jYlfG8rZ+a0bhZd+RANXejy7M4Js8fq9U+XoWTd5w
 github.com/vbatts/go-mtree v0.5.3/go.mod h1:eXsdoPMdL2jcJx6HweWi9lYQxBsTp4lNhqqAjgkZUg8=
 github.com/vbatts/tar-split v0.11.3 h1:hLFqsOLQ1SsppQNTMpkpPXClLDfC2A3Zgy9OUU+RVck=
 github.com/vbatts/tar-split v0.11.3/go.mod h1:9QlHN18E+fEH7RdG+QAJJcuya3rqT7eXSTY7wGrAokY=
-github.com/vifraa/gopom v0.2.2 h1:zrqoCUVIplcsETouv3xxHPvfI/WV1GUPrdX2+Diahzo=
-github.com/vifraa/gopom v0.2.2/go.mod h1:oPa1dcrGrtlO37WPDBm5SqHAT+wTgF8An1Q71Z6Vv4o=
+github.com/vifraa/gopom v1.0.0 h1:L9XlKbyvid8PAIK8nr0lihMApJQg/12OBvMA28BcWh0=
+github.com/vifraa/gopom v1.0.0/go.mod h1:oPa1dcrGrtlO37WPDBm5SqHAT+wTgF8An1Q71Z6Vv4o=
 github.com/wagoodman/go-partybus v0.0.0-20230516145632-8ccac152c651 h1:jIVmlAFIqV3d+DOxazTR9v+zgj8+VYuQBzPgBZvWBHA=
 github.com/wagoodman/go-partybus v0.0.0-20230516145632-8ccac152c651/go.mod h1:b26F2tHLqaoRQf8DywqzVaV1MQ9yvjb0OMcNl7Nxu20=
 github.com/wagoodman/go-progress v0.0.0-20230301185719-21920a456ad5 h1:lwgTsTy18nYqASnH58qyfRW/ldj7Gt2zzBvgYPzdA4s=

syft/pkg/cataloger/java/parse_pom_xml.go

@@ -28,17 +28,19 @@ func parserPomXML(_ file.Resolver, _ *generic.Environment, reader file.LocationR
 	}
 
 	var pkgs []pkg.Package
-	for _, dep := range pom.Dependencies {
-		p := newPackageFromPom(
-			pom,
-			dep,
-			reader.Location.WithAnnotation(pkg.EvidenceAnnotationKey, pkg.PrimaryEvidenceAnnotation),
-		)
-		if p.Name == "" {
-			continue
-		}
+	if pom.Dependencies != nil {
+		for _, dep := range *pom.Dependencies {
+			p := newPackageFromPom(
+				pom,
+				dep,
+				reader.Location.WithAnnotation(pkg.EvidenceAnnotationKey, pkg.PrimaryEvidenceAnnotation),
+			)
+			if p.Name == "" {
+				continue
+			}
 
-		pkgs = append(pkgs, p)
+			pkgs = append(pkgs, p)
+		}
 	}
 
 	return pkgs, nil, nil
@@ -53,15 +55,18 @@ func parsePomXMLProject(path string, reader io.Reader) (*pkg.PomProject, error)
 }
 
 func newPomProject(path string, p gopom.Project) *pkg.PomProject {
+	artifactID := safeString(p.ArtifactID)
+	name := safeString(p.Name)
+	projectURL := safeString(p.URL)
 	return &pkg.PomProject{
 		Path:        path,
 		Parent:      pomParent(p, p.Parent),
 		GroupID:     resolveProperty(p, p.GroupID),
-		ArtifactID:  p.ArtifactID,
+		ArtifactID:  artifactID,
 		Version:     resolveProperty(p, p.Version),
-		Name:        p.Name,
+		Name:        name,
 		Description: cleanDescription(p.Description),
-		URL:         p.URL,
+		URL:         projectURL,
 	}
 }
 
@@ -74,7 +79,7 @@ func newPackageFromPom(pom gopom.Project, dep gopom.Dependency, locations ...fil
 		},
 	}
 
-	name := dep.ArtifactID
+	name := safeString(dep.ArtifactID)
 	version := resolveProperty(pom, dep.Version)
 
 	p := pkg.Package{
@@ -104,19 +109,29 @@ func decodePomXML(content io.Reader) (project gopom.Project, err error) {
 	return project, nil
 }
 
-func pomParent(pom gopom.Project, parent gopom.Parent) (result *pkg.PomParent) {
-	if parent.ArtifactID != "" || parent.GroupID != "" || parent.Version != "" {
-		result = &pkg.PomParent{
-			GroupID:    resolveProperty(pom, parent.GroupID),
-			ArtifactID: parent.ArtifactID,
-			Version:    resolveProperty(pom, parent.Version),
-		}
+func pomParent(pom gopom.Project, parent *gopom.Parent) (result *pkg.PomParent) {
+	if parent == nil {
+		return nil
+	}
+
+	artifactID := safeString(parent.ArtifactID)
+	result = &pkg.PomParent{
+		GroupID:    resolveProperty(pom, parent.GroupID),
+		ArtifactID: artifactID,
+		Version:    resolveProperty(pom, parent.Version),
+	}
+
+	if result.GroupID == "" && result.ArtifactID == "" && result.Version == "" {
+		return nil
 	}
 	return result
 }
 
-func cleanDescription(original string) (cleaned string) {
-	descriptionLines := strings.Split(original, "\n")
+func cleanDescription(original *string) (cleaned string) {
+	if original == nil {
+		return ""
+	}
+	descriptionLines := strings.Split(*original, "\n")
 	for _, line := range descriptionLines {
 		line = strings.TrimSpace(line)
 		if len(line) == 0 {
@@ -130,12 +145,17 @@ func cleanDescription(original string) (cleaned string) {
 // resolveProperty emulates some maven property resolution logic by looking in the project's variables
 // as well as supporting the project expressions like ${project.parent.groupId}.
 // If no match is found, the entire expression including ${} is returned
-func resolveProperty(pom gopom.Project, property string) string {
-	return propertyMatcher.ReplaceAllStringFunc(property, func(match string) string {
+//
+//nolint:gocognit
+func resolveProperty(pom gopom.Project, property *string) string {
+	propertyCase := safeString(property)
+	return propertyMatcher.ReplaceAllStringFunc(propertyCase, func(match string) string {
 		propertyName := strings.TrimSpace(match[2 : len(match)-1])
-		if value, ok := pom.Properties.Entries[propertyName]; ok {
+		entries := pomProperties(pom)
+		if value, ok := entries[propertyName]; ok {
 			return value
 		}
+
 		// if we don't find anything directly in the pom properties,
 		// see if we have a project.x expression and process this based
 		// on the xml tags in gopom
@@ -151,9 +171,15 @@ func resolveProperty(pom gopom.Project, property string) string {
 				part := parts[partNum]
 				for fieldNum := 0; fieldNum < pomValueType.NumField(); fieldNum++ {
 					f := pomValueType.Field(fieldNum)
-					if part == f.Tag.Get("xml") {
+					tag := f.Tag.Get("xml")
+					tag = strings.TrimSuffix(tag, ",omitempty")
+					if part == tag {
 						pomValue = pomValue.Field(fieldNum)
 						pomValueType = pomValue.Type()
+						if pomValueType.Kind() == reflect.Ptr {
+							pomValue = pomValue.Elem()
+							pomValueType = pomValue.Type()
+						}
 						if partNum == numParts-1 {
 							return fmt.Sprintf("%v", pomValue.Interface())
 						}
@@ -165,3 +191,17 @@ func resolveProperty(pom gopom.Project, property string) string {
 		return match
 	})
 }
+
+func pomProperties(p gopom.Project) map[string]string {
+	if p.Properties != nil {
+		return p.Properties.Entries
+	}
+	return map[string]string{}
+}
+
+func safeString(s *string) string {
+	if s == nil {
+		return ""
+	}
+	return *s
+}

syft/pkg/cataloger/java/parse_pom_xml_test.go

@@ -272,13 +272,13 @@ func Test_parsePomXMLProject(t *testing.T) {
 func Test_pomParent(t *testing.T) {
 	tests := []struct {
 		name     string
-		input    gopom.Parent
+		input    *gopom.Parent
 		expected *pkg.PomParent
 	}{
 		{
 			name: "only group ID",
-			input: gopom.Parent{
-				GroupID: "org.something",
+			input: &gopom.Parent{
+				GroupID: stringPointer("org.something"),
 			},
 			expected: &pkg.PomParent{
 				GroupID: "org.something",
@@ -286,8 +286,8 @@ func Test_pomParent(t *testing.T) {
 		},
 		{
 			name: "only artifact ID",
-			input: gopom.Parent{
-				ArtifactID: "something",
+			input: &gopom.Parent{
+				ArtifactID: stringPointer("something"),
 			},
 			expected: &pkg.PomParent{
 				ArtifactID: "something",
@@ -295,22 +295,27 @@ func Test_pomParent(t *testing.T) {
 		},
 		{
 			name: "only Version",
-			input: gopom.Parent{
-				Version: "something",
+			input: &gopom.Parent{
+				Version: stringPointer("something"),
 			},
 			expected: &pkg.PomParent{
 				Version: "something",
 			},
 		},
+		{
+			name:     "nil",
+			input:    nil,
+			expected: nil,
+		},
 		{
 			name:     "empty",
-			input:    gopom.Parent{},
+			input:    &gopom.Parent{},
 			expected: nil,
 		},
 		{
 			name: "unused field",
-			input: gopom.Parent{
-				RelativePath: "something",
+			input: &gopom.Parent{
+				RelativePath: stringPointer("something"),
 			},
 			expected: nil,
 		},
@@ -341,7 +346,7 @@ func Test_cleanDescription(t *testing.T) {
 
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {
-			assert.Equal(t, test.expected, cleanDescription(test.input))
+			assert.Equal(t, test.expected, cleanDescription(stringPointer(test.input)))
 		})
 	}
 }
@@ -357,7 +362,7 @@ func Test_resolveProperty(t *testing.T) {
 			name:     "property",
 			property: "${version.number}",
 			pom: gopom.Project{
-				Properties: gopom.Properties{
+				Properties: &gopom.Properties{
 					Entries: map[string]string{
 						"version.number": "12.5.0",
 					},
@@ -369,7 +374,7 @@ func Test_resolveProperty(t *testing.T) {
 			name:     "groupId",
 			property: "${project.groupId}",
 			pom: gopom.Project{
-				GroupID: "org.some.group",
+				GroupID: stringPointer("org.some.group"),
 			},
 			expected: "org.some.group",
 		},
@@ -377,8 +382,8 @@ func Test_resolveProperty(t *testing.T) {
 			name:     "parent groupId",
 			property: "${project.parent.groupId}",
 			pom: gopom.Project{
-				Parent: gopom.Parent{
-					GroupID: "org.some.parent",
+				Parent: &gopom.Parent{
+					GroupID: stringPointer("org.some.parent"),
 				},
 			},
 			expected: "org.some.parent",
@@ -387,8 +392,12 @@ func Test_resolveProperty(t *testing.T) {
 
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {
-			resolved := resolveProperty(test.pom, test.property)
+			resolved := resolveProperty(test.pom, stringPointer(test.property))
 			assert.Equal(t, test.expected, resolved)
 		})
 	}
 }
+
+func stringPointer(s string) *string {
+	return &s
+}