Add endpoint for listing permissions for a resource

pkg/util/resource_helper.go

@@ -0,0 +1,15 @@
+package util
+
+import "github.com/owncloud/ocis-settings/pkg/proto/v0"
+
+const (
+	ResourceIdAll = "all"
+)
+
+// IsResourceMatched checks if the `example` resource is an exact match or a subset of `definition`
+func IsResourceMatched(definition, example *proto.Resource) bool {
+	if definition.Type != example.Type {
+		return false
+	}
+	return definition.Id == ResourceIdAll || definition.Id == example.Id
+}

pkg/util/resource_helper_test.go

@@ -0,0 +1,90 @@
+package util
+
+import (
+	"github.com/owncloud/ocis-settings/pkg/proto/v0"
+	"gotest.tools/assert"
+	"testing"
+)
+
+func TestIsResourceMatched(t *testing.T) {
+	scenarios := []struct {
+		name       string
+		definition *proto.Resource
+		example    *proto.Resource
+		matched    bool
+	}{
+		{
+			"same resource types without ids match",
+			&proto.Resource{
+				Type: proto.Resource_TYPE_SYSTEM,
+			},
+			&proto.Resource{
+				Type: proto.Resource_TYPE_SYSTEM,
+			},
+			true,
+		},
+		{
+			"different resource types without ids don't match",
+			&proto.Resource{
+				Type: proto.Resource_TYPE_SYSTEM,
+			},
+			&proto.Resource{
+				Type: proto.Resource_TYPE_USER,
+			},
+			false,
+		},
+		{
+			"same resource types with different ids don't match",
+			&proto.Resource{
+				Type: proto.Resource_TYPE_USER,
+				Id:   "einstein",
+			},
+			&proto.Resource{
+				Type: proto.Resource_TYPE_USER,
+				Id:   "marie",
+			},
+			false,
+		},
+		{
+			"same resource types with same ids match",
+			&proto.Resource{
+				Type: proto.Resource_TYPE_USER,
+				Id:   "einstein",
+			},
+			&proto.Resource{
+				Type: proto.Resource_TYPE_USER,
+				Id:   "einstein",
+			},
+			true,
+		},
+		{
+			"same resource types with definition = ALL and without id in example is a match",
+			&proto.Resource{
+				Type: proto.Resource_TYPE_USER,
+				Id:   ResourceIdAll,
+			},
+			&proto.Resource{
+				Type: proto.Resource_TYPE_USER,
+			},
+			true,
+		},
+		{
+			"same resource types with definition.id = ALL and with some id in example is a match",
+			&proto.Resource{
+				Type: proto.Resource_TYPE_USER,
+				Id:   ResourceIdAll,
+			},
+			&proto.Resource{
+				Type: proto.Resource_TYPE_USER,
+				Id:   "einstein",
+			},
+			true,
+		},
+	}
+
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			assert.Equal(t, scenario.matched, IsResourceMatched(scenario.definition, scenario.example))
+		})
+	}
+}