Remove dependency to helm v2

Signed-off-by: Paulo Gomes <paulo.gomes@weave.works>

Author: Paulo Gomes

go.mod

@@ -40,7 +40,6 @@ require (
 	k8s.io/api v0.23.3
 	k8s.io/apimachinery v0.23.3
 	k8s.io/client-go v0.23.3
-	k8s.io/helm v2.17.0+incompatible
 	k8s.io/utils v0.0.0-20220210201930-3a6ce19ff2f9
 	sigs.k8s.io/cli-utils v0.28.0
 	sigs.k8s.io/controller-runtime v0.11.1

go.sum

@@ -1759,8 +1759,6 @@ k8s.io/gengo v0.0.0-20200428234225-8167cfdcfc14/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8
 k8s.io/gengo v0.0.0-20201113003025-83324d819ded/go.mod h1:FiNAH4ZV3gBg2Kwh89tzAEV2be7d5xI0vBa/VySYy3E=
 k8s.io/gengo v0.0.0-20201214224949-b6c5ce23f027/go.mod h1:FiNAH4ZV3gBg2Kwh89tzAEV2be7d5xI0vBa/VySYy3E=
 k8s.io/gengo v0.0.0-20210813121822-485abfe95c7c/go.mod h1:FiNAH4ZV3gBg2Kwh89tzAEV2be7d5xI0vBa/VySYy3E=
-k8s.io/helm v2.17.0+incompatible h1:Bpn6o1wKLYqKM3+Osh8e+1/K2g/GsQJ4F4yNF2+deao=
-k8s.io/helm v2.17.0+incompatible/go.mod h1:LZzlS4LQBHfciFOurYBFkCMTaZ0D1l+p0teMg7TSULI=
 k8s.io/klog/v2 v2.0.0/go.mod h1:PBfzABfn139FHAV07az/IF9Wp1bkk3vpT2XSJ76fSDE=
 k8s.io/klog/v2 v2.2.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=
 k8s.io/klog/v2 v2.4.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=

internal/helm/getter/getter.go

@@ -20,10 +20,10 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"fmt"
+	"net/url"
 
 	"helm.sh/helm/v3/pkg/getter"
 	corev1 "k8s.io/api/core/v1"
-	"k8s.io/helm/pkg/urlutil"
 )
 
 // ClientOptionsFromSecret constructs a getter.Option slice for the given secret.
@@ -61,7 +61,7 @@ func BasicAuthFromSecret(secret corev1.Secret) (getter.Option, error) {
 //
 // Secrets with no certFile, keyFile, AND caFile are ignored, if only a
 // certBytes OR keyBytes is defined it returns an error.
-func TLSClientConfigFromSecret(secret corev1.Secret, url string) (*tls.Config, error) {
+func TLSClientConfigFromSecret(secret corev1.Secret, repositoryUrl string) (*tls.Config, error) {
 	certBytes, keyBytes, caBytes := secret.Data["certFile"], secret.Data["keyFile"], secret.Data["caFile"]
 	switch {
 	case len(certBytes)+len(keyBytes)+len(caBytes) == 0:
@@ -91,11 +91,12 @@ func TLSClientConfigFromSecret(secret corev1.Secret, url string) (*tls.Config, e
 
 	tlsConf.BuildNameToCertificate()
 
-	sni, err := urlutil.ExtractHostname(url)
+	u, err := url.Parse(repositoryUrl)
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("cannot parse repository URL: %w", err)
 	}
-	tlsConf.ServerName = sni
+
+	tlsConf.ServerName = u.Hostname()
 
 	return tlsConf, nil
 }