Add support for --insecure-skip-tls-verify flag on helm repo add command (#1990)

Parses a new field in repositories named `skipTLSVerify` and if set to `true`, it appends `--insecure-skip-tls-verify` in `helm repo add` command.

This should be useful with internal self-signed repos, mitm proxies etc.

Resolves #1871

README.md

@@ -68,6 +68,10 @@ repositories:
 - name: insecure
    url: https://charts.my-insecure-domain.com
    caFile: optional_ca_crt
+# Advanced configuration: You can skip the verification of TLS for an https repo
+- name: skipTLS
+  url: https://ss.my-insecure-domain.com
+  skipTLSVerify: true
 
 # context: kube-context # this directive is deprecated, please consider using helmDefaults.kubeContext
 

pkg/app/app_test.go

@@ -2554,7 +2554,7 @@ func (helm *mockHelmExec) SetExtraArgs(args ...string) {
 func (helm *mockHelmExec) SetHelmBinary(bin string) {
 	return
 }
-func (helm *mockHelmExec) AddRepo(name, repository, cafile, certfile, keyfile, username, password string, managed string, passCredentials string) error {
+func (helm *mockHelmExec) AddRepo(name, repository, cafile, certfile, keyfile, username, password string, managed string, passCredentials string, skipTLSVerify string) error {
 	helm.repos = append(helm.repos, mockRepo{Name: name})
 	return nil
 }

pkg/app/mocks_test.go

@@ -48,7 +48,7 @@ func (helm *noCallHelmExec) SetHelmBinary(bin string) {
 	helm.doPanic()
 	return
 }
-func (helm *noCallHelmExec) AddRepo(name, repository, cafile, certfile, keyfile, username, password string, managed string, passCredentials string) error {
+func (helm *noCallHelmExec) AddRepo(name, repository, cafile, certfile, keyfile, username, password string, managed string, passCredentials string, skipTLSVerify string) error {
 	helm.doPanic()
 	return nil
 }

pkg/exectest/helm.go

@@ -84,8 +84,8 @@ func (helm *Helm) SetExtraArgs(args ...string) {
 func (helm *Helm) SetHelmBinary(bin string) {
 	return
 }
-func (helm *Helm) AddRepo(name, repository, cafile, certfile, keyfile, username, password string, managed string, passCredentials string) error {
+func (helm *Helm) AddRepo(name, repository, cafile, certfile, keyfile, username, password string, managed string, passCredentials string, skipTLSVerify string) error {
-	helm.Repo = []string{name, repository, cafile, certfile, keyfile, username, password, managed, passCredentials}
+	helm.Repo = []string{name, repository, cafile, certfile, keyfile, username, password, managed, passCredentials, skipTLSVerify}
 	return nil
 }
 func (helm *Helm) UpdateRepo() error {

pkg/helmexec/exec.go

@@ -108,7 +108,7 @@ func (helm *execer) SetHelmBinary(bin string) {
 	helm.helmBinary = bin
 }
 
-func (helm *execer) AddRepo(name, repository, cafile, certfile, keyfile, username, password string, managed string, passCredentials string) error {
+func (helm *execer) AddRepo(name, repository, cafile, certfile, keyfile, username, password string, managed string, passCredentials string, skipTLSVerify string) error {
 	var args []string
 	var out []byte
 	var err error
@@ -144,6 +144,9 @@ func (helm *execer) AddRepo(name, repository, cafile, certfile, keyfile, usernam
 		if passCredentials == "true" {
 			args = append(args, "--pass-credentials")
 		}
+		if skipTLSVerify == "true" {
+			args = append(args, "--insecure-skip-tls-verify")
+		}
 		helm.logger.Infof("Adding repo %v %v", name, repository)
 		out, err = helm.exec(args, map[string]string{})
 	default:

pkg/helmexec/exec_test.go

@@ -89,7 +89,7 @@ func Test_AddRepo_Helm_3_3_2(t *testing.T) {
 		kubeContext: "dev",
 		runner:      &mockRunner{},
 	}
-	helm.AddRepo("myRepo", "https://repo.example.com/", "", "cert.pem", "key.pem", "", "", "", "")
+	helm.AddRepo("myRepo", "https://repo.example.com/", "", "cert.pem", "key.pem", "", "", "", "", "")
 	expected := `Adding repo myRepo https://repo.example.com/
 exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --force-update --cert-file cert.pem --key-file key.pem
 `
@@ -102,7 +102,7 @@ func Test_AddRepo(t *testing.T) {
 	var buffer bytes.Buffer
 	logger := NewLogger(&buffer, "debug")
 	helm := MockExecer(logger, "dev")
-	helm.AddRepo("myRepo", "https://repo.example.com/", "", "cert.pem", "key.pem", "", "", "", "")
+	helm.AddRepo("myRepo", "https://repo.example.com/", "", "cert.pem", "key.pem", "", "", "", "", "")
 	expected := `Adding repo myRepo https://repo.example.com/
 exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --cert-file cert.pem --key-file key.pem
 `
@@ -111,7 +111,7 @@ exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --cert-f
 	}
 
 	buffer.Reset()
-	helm.AddRepo("myRepo", "https://repo.example.com/", "ca.crt", "", "", "", "", "", "")
+	helm.AddRepo("myRepo", "https://repo.example.com/", "ca.crt", "", "", "", "", "", "", "")
 	expected = `Adding repo myRepo https://repo.example.com/
 exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --ca-file ca.crt
 `
@@ -120,7 +120,7 @@ exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --ca-fil
 	}
 
 	buffer.Reset()
-	helm.AddRepo("myRepo", "https://repo.example.com/", "", "", "", "", "", "", "")
+	helm.AddRepo("myRepo", "https://repo.example.com/", "", "", "", "", "", "", "", "")
 	expected = `Adding repo myRepo https://repo.example.com/
 exec: helm --kube-context dev repo add myRepo https://repo.example.com/
 `
@@ -129,7 +129,7 @@ exec: helm --kube-context dev repo add myRepo https://repo.example.com/
 	}
 
 	buffer.Reset()
-	helm.AddRepo("acrRepo", "", "", "", "", "", "", "acr", "")
+	helm.AddRepo("acrRepo", "", "", "", "", "", "", "acr", "", "")
 	expected = `Adding repo acrRepo (acr)
 exec: az acr helm repo add --name acrRepo
 exec: az acr helm repo add --name acrRepo: 
@@ -139,7 +139,7 @@ exec: az acr helm repo add --name acrRepo:
 	}
 
 	buffer.Reset()
-	helm.AddRepo("otherRepo", "", "", "", "", "", "", "unknown", "")
+	helm.AddRepo("otherRepo", "", "", "", "", "", "", "unknown", "", "")
 	expected = `ERROR: unknown type 'unknown' for repository otherRepo
 `
 	if buffer.String() != expected {
@@ -147,7 +147,7 @@ exec: az acr helm repo add --name acrRepo:
 	}
 
 	buffer.Reset()
-	helm.AddRepo("myRepo", "https://repo.example.com/", "", "", "", "example_user", "example_password", "", "")
+	helm.AddRepo("myRepo", "https://repo.example.com/", "", "", "", "example_user", "example_password", "", "", "")
 	expected = `Adding repo myRepo https://repo.example.com/
 exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --username example_user --password example_password
 `
@@ -156,7 +156,7 @@ exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --userna
 	}
 
 	buffer.Reset()
-	helm.AddRepo("", "https://repo.example.com/", "", "", "", "", "", "", "")
+	helm.AddRepo("", "https://repo.example.com/", "", "", "", "", "", "", "", "")
 	expected = `empty field name
 
 `
@@ -165,7 +165,7 @@ exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --userna
 	}
 
 	buffer.Reset()
-	helm.AddRepo("myRepo", "https://repo.example.com/", "", "", "", "example_user", "example_password", "", "true")
+	helm.AddRepo("myRepo", "https://repo.example.com/", "", "", "", "example_user", "example_password", "", "true", "")
 	expected = `Adding repo myRepo https://repo.example.com/
 exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --username example_user --password example_password --pass-credentials
 `
@@ -173,6 +173,12 @@ exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --userna
 		t.Errorf("helmexec.AddRepo()\nactual = %v\nexpect = %v", buffer.String(), expected)
 	}
 
+	buffer.Reset()
+	helm.AddRepo("myRepo", "https://repo.example.com/", "", "", "", "", "", "", "", "true")
+	expected = `Adding repo myRepo https://repo.example.com/
+exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --insecure-skip-tls-verify
+`
+
 }
 
 func Test_UpdateRepo(t *testing.T) {
@@ -516,7 +522,7 @@ func Test_LogLevels(t *testing.T) {
 		buffer.Reset()
 		logger := NewLogger(&buffer, logLevel)
 		helm := MockExecer(logger, "")
-		helm.AddRepo("myRepo", "https://repo.example.com/", "", "", "", "example_user", "example_password", "", "")
+		helm.AddRepo("myRepo", "https://repo.example.com/", "", "", "", "example_user", "example_password", "", "", "")
 		if buffer.String() != expected {
 			t.Errorf("helmexec.AddRepo()\nactual = %v\nexpect = %v", buffer.String(), expected)
 		}

pkg/helmexec/helmexec.go

@@ -12,7 +12,7 @@ type Interface interface {
 	SetExtraArgs(args ...string)
 	SetHelmBinary(bin string)
 
-	AddRepo(name, repository, cafile, certfile, keyfile, username, password string, managed string, passCredentials string) error
+	AddRepo(name, repository, cafile, certfile, keyfile, username, password string, managed string, passCredentials string, skipTLSVerify string) error
 	UpdateRepo() error
 	RegistryLogin(name string, username string, password string) error
 	BuildDeps(name, chart string) error

pkg/state/state.go

@@ -173,6 +173,7 @@ type RepositorySpec struct {
 	Managed         string `yaml:"managed,omitempty"`
 	OCI             bool   `yaml:"oci,omitempty"`
 	PassCredentials string `yaml:"passCredentials,omitempty"`
+	SkipTLSVerify   string `yaml:"skipTLSVerify,omitempty"`
 }
 
 // ReleaseSpec defines the structure of a helm release
@@ -393,7 +394,7 @@ func (st *HelmState) ApplyOverrides(spec *ReleaseSpec) {
 
 type RepoUpdater interface {
 	IsHelm3() bool
-	AddRepo(name, repository, cafile, certfile, keyfile, username, password string, managed string, passCredentials string) error
+	AddRepo(name, repository, cafile, certfile, keyfile, username, password string, managed string, passCredentials string, skipTLSVerify string) error
 	UpdateRepo() error
 	RegistryLogin(name string, username string, password string) error
 }
@@ -412,7 +413,7 @@ func (st *HelmState) SyncRepos(helm RepoUpdater, shouldSkip map[string]bool) ([]
 				err = helm.RegistryLogin(repo.URL, username, password)
 			}
 		} else {
-			err = helm.AddRepo(repo.Name, repo.URL, repo.CaFile, repo.CertFile, repo.KeyFile, repo.Username, repo.Password, repo.Managed, repo.PassCredentials)
+			err = helm.AddRepo(repo.Name, repo.URL, repo.CaFile, repo.CertFile, repo.KeyFile, repo.Username, repo.Password, repo.Managed, repo.PassCredentials, repo.SkipTLSVerify)
 		}
 
 		if err != nil {

pkg/state/state_test.go

@@ -890,10 +890,11 @@ func TestHelmState_SyncRepos(t *testing.T) {
 					Username:        "",
 					Password:        "",
 					PassCredentials: "",
+					SkipTLSVerify:   "",
 				},
 			},
 			helm: &exectest.Helm{},
-			want: []string{"name", "http://example.com/", "", "", "", "", "", "", ""},
+			want: []string{"name", "http://example.com/", "", "", "", "", "", "", "", ""},
 		},
 		{
 			name: "ACR hosted repository",
@@ -904,7 +905,7 @@ func TestHelmState_SyncRepos(t *testing.T) {
 				},
 			},
 			helm: &exectest.Helm{},
-			want: []string{"name", "", "", "", "", "", "", "acr", ""},
+			want: []string{"name", "", "", "", "", "", "", "acr", "", ""},
 		},
 		{
 			name: "repository with cert and key",
@@ -917,10 +918,11 @@ func TestHelmState_SyncRepos(t *testing.T) {
 					Username:        "",
 					Password:        "",
 					PassCredentials: "",
+					SkipTLSVerify:   "",
 				},
 			},
 			helm: &exectest.Helm{},
-			want: []string{"name", "http://example.com/", "", "certfile", "keyfile", "", "", "", ""},
+			want: []string{"name", "http://example.com/", "", "certfile", "keyfile", "", "", "", "", ""},
 		},
 		{
 			name: "repository with ca file",
@@ -932,10 +934,11 @@ func TestHelmState_SyncRepos(t *testing.T) {
 					Username:        "",
 					Password:        "",
 					PassCredentials: "",
+					SkipTLSVerify:   "",
 				},
 			},
 			helm: &exectest.Helm{},
-			want: []string{"name", "http://example.com/", "cafile", "", "", "", "", "", ""},
+			want: []string{"name", "http://example.com/", "cafile", "", "", "", "", "", "", ""},
 		},
 		{
 			name: "repository with username and password",
@@ -948,10 +951,11 @@ func TestHelmState_SyncRepos(t *testing.T) {
 					Username:        "example_user",
 					Password:        "example_password",
 					PassCredentials: "",
+					SkipTLSVerify:   "",
 				},
 			},
 			helm: &exectest.Helm{},
-			want: []string{"name", "http://example.com/", "", "", "", "example_user", "example_password", "", ""},
+			want: []string{"name", "http://example.com/", "", "", "", "example_user", "example_password", "", "", ""},
 		},
 		{
 			name: "repository with username and password and pass-credentials",
@@ -964,10 +968,28 @@ func TestHelmState_SyncRepos(t *testing.T) {
 					Username:        "example_user",
 					Password:        "example_password",
 					PassCredentials: "true",
+					SkipTLSVerify:   "",
 				},
 			},
 			helm: &exectest.Helm{},
-			want: []string{"name", "http://example.com/", "", "", "", "example_user", "example_password", "", "true"},
+			want: []string{"name", "http://example.com/", "", "", "", "example_user", "example_password", "", "true", ""},
+		},
+		{
+			name: "repository with skip-tls-verify",
+			repos: []RepositorySpec{
+				{
+					Name:            "name",
+					URL:             "http://example.com/",
+					CertFile:        "",
+					KeyFile:         "",
+					Username:        "",
+					Password:        "",
+					PassCredentials: "",
+					SkipTLSVerify:   "true",
+				},
+			},
+			helm: &exectest.Helm{},
+			want: []string{"name", "http://example.com/", "", "", "", "", "", "", "", "true"},
 		},
 	}
 	for i := range tests {