From 7799b483f52ceb665264a4056da3d2569d60f910 Mon Sep 17 00:00:00 2001
From: Matt Farina <matt.farina@suse.com>
Date: Thu, 31 Jul 2025 09:25:12 -0400
Subject: [PATCH] fix Chart.yaml handling

Signed-off-by: Matt Farina <matt.farina@suse.com>
(cherry picked from commit f13afaacd6f8f9dca4ad914d87fabbe129692eda)
---
 pkg/chartutil/dependencies.go    |  5 +++--
 pkg/lint/rules/chartfile.go      |  3 +++
 pkg/lint/rules/chartfile_test.go | 10 ++++++++++
 3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/pkg/chartutil/dependencies.go b/pkg/chartutil/dependencies.go
index 36a341927..37452cec7 100644
--- a/pkg/chartutil/dependencies.go
+++ b/pkg/chartutil/dependencies.go
@@ -16,6 +16,7 @@ limitations under the License.
 package chartutil
 
 import (
+	"fmt"
 	"log"
 	"strings"
 
@@ -255,8 +256,8 @@ func processImportValues(c *chart.Chart, merge bool) error {
 		for _, riv := range r.ImportValues {
 			switch iv := riv.(type) {
 			case map[string]interface{}:
-				child := iv["child"].(string)
-				parent := iv["parent"].(string)
+				child := fmt.Sprintf("%v", iv["child"])
+				parent := fmt.Sprintf("%v", iv["parent"])
 
 				outiv = append(outiv, map[string]string{
 					"child":  child,
diff --git a/pkg/lint/rules/chartfile.go b/pkg/lint/rules/chartfile.go
index 910602b7d..555ec71ba 100644
--- a/pkg/lint/rules/chartfile.go
+++ b/pkg/lint/rules/chartfile.go
@@ -151,6 +151,9 @@ func validateChartVersion(cf *chart.Metadata) error {
 
 func validateChartMaintainer(cf *chart.Metadata) error {
 	for _, maintainer := range cf.Maintainers {
+		if maintainer == nil {
+			return errors.New("a maintainer entry is empty")
+		}
 		if maintainer.Name == "" {
 			return errors.New("each maintainer requires a name")
 		} else if maintainer.Email != "" && !govalidator.IsEmail(maintainer.Email) {
diff --git a/pkg/lint/rules/chartfile_test.go b/pkg/lint/rules/chartfile_test.go
index f4c836cf7..4740047be 100644
--- a/pkg/lint/rules/chartfile_test.go
+++ b/pkg/lint/rules/chartfile_test.go
@@ -143,6 +143,16 @@ func TestValidateChartMaintainer(t *testing.T) {
 			t.Errorf("validateChartMaintainer(%s, %s) to return no error, got %s", test.Name, test.Email, err.Error())
 		}
 	}
+
+	// Testing for an empty maintainer
+	badChart.Maintainers = []*chart.Maintainer{nil}
+	err := validateChartMaintainer(badChart)
+	if err == nil {
+		t.Errorf("validateChartMaintainer did not return error for nil maintainer as expected")
+	}
+	if err.Error() != "a maintainer entry is empty" {
+		t.Errorf("validateChartMaintainer returned unexpected error for nil maintainer: %s", err.Error())
+	}
 }
 
 func TestValidateChartSources(t *testing.T) {