Fix pseudo git HTTP urls broken since 59c82659 (#4453)

* Fix pseudo git HTTP urls broken since 59c82659

Signed-off-by: Sylvain Rabot <sylvain@abstraction.fr>

* Add test for Git resources using HTTP URLs

Signed-off-by: Sylvain Rabot <sylvain@abstraction.fr>

api/krusty/remoteload_test.go

@@ -77,6 +77,66 @@ spec:
 	assert.NoError(t, fSys.RemoveAll(tmpDir.String()))
 }
 
+func TestRemoteResourceGitHTTP(t *testing.T) {
+	output := `apiVersion: v1
+kind: Pod
+metadata:
+  labels:
+    app: myapp
+  name: dev-myapp-pod
+spec:
+  containers:
+  - image: nginx:1.7.9
+    name: nginx
+`
+	tests := []struct {
+		input []byte
+	}{
+		{
+			input: []byte(`
+resources:
+- https://github.com/kubernetes-sigs/kustomize/examples/multibases/dev/?ref=v1.0.6
+`),
+		},
+		{
+			input: []byte(`
+resources:
+- https://github.com/kubernetes-sigs/kustomize//examples/multibases/dev/?ref=v1.0.6
+`),
+		},
+		{
+			input: []byte(`
+resources:
+- git::https://github.com/kubernetes-sigs/kustomize/examples/multibases/dev/?ref=v1.0.6
+`),
+		},
+		{
+			input: []byte(`
+resources:
+- git::https://github.com/kubernetes-sigs/kustomize//examples/multibases/dev/?ref=v1.0.6
+`),
+		},
+	}
+
+	for _, test := range tests {
+		fSys := filesys.MakeFsOnDisk()
+		b := krusty.MakeKustomizer(krusty.MakeDefaultOptions())
+		tmpDir, err := filesys.NewTmpConfirmedDir()
+		assert.NoError(t, err)
+		assert.NoError(t, fSys.WriteFile(filepath.Join(tmpDir.String(), "kustomization.yaml"), test.input))
+		m, err := b.Run(fSys, tmpDir.String())
+		if utils.IsErrTimeout(err) {
+			// Don't fail on timeouts.
+			t.SkipNow()
+		}
+		assert.NoError(t, err)
+		yml, err := m.AsYaml()
+		assert.NoError(t, err)
+		assert.Equal(t, output, string(yml))
+		assert.NoError(t, fSys.RemoveAll(tmpDir.String()))
+	}
+}
+
 func TestRemoteResourceWithHTTPError(t *testing.T) {
 	fSys := filesys.MakeFsOnDisk()
 	b := krusty.MakeKustomizer(krusty.MakeDefaultOptions())

api/loader/fileloader.go

@@ -4,6 +4,7 @@
 package loader
 
 import (
+	"errors"
 	"fmt"
 	"io/ioutil"
 	"log"
@@ -298,7 +299,7 @@ func (fl *fileLoader) errIfRepoCycle(newRepoSpec *git.RepoSpec) error {
 }
 
 // Load returns the content of file at the given path,
-// else an error.  Relative paths are taken relative
+// else an error. Relative paths are taken relative
 // to the root.
 func (fl *fileLoader) Load(path string) ([]byte, error) {
 	if u, err := url.Parse(path); err == nil && (u.Scheme == "http" || u.Scheme == "https") {
@@ -314,6 +315,10 @@ func (fl *fileLoader) Load(path string) ([]byte, error) {
 		}
 		defer resp.Body.Close()
 		if resp.StatusCode < 200 || resp.StatusCode > 299 {
+			_, err := git.NewRepoSpecFromUrl(path)
+			if err == nil {
+				return nil, errors.New("URL is a git repository")
+			}
 			return nil, fmt.Errorf("%w: status code %d (%s)", ErrorHTTP, resp.StatusCode, http.StatusText(resp.StatusCode))
 		}
 		body, err := ioutil.ReadAll(resp.Body)