Validate names in BeforeCreate

pkg/api/validation/name.go

@@ -0,0 +1,48 @@
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package validation
+
+import (
+	"fmt"
+	"strings"
+)
+
+// NameMayNotBe specifies strings that cannot be used as names specified as path segments (like the REST API or etcd store)
+var NameMayNotBe = []string{".", ".."}
+
+// NameMayNotContain specifies substrings that cannot be used in names specified as path segments (like the REST API or etcd store)
+var NameMayNotContain = []string{"/", "%"}
+
+// ValidatePathSegmentName validates the name can be used as a path segment
+func ValidatePathSegmentName(name string, prefix bool) (bool, string) {
+	// Only check for exact matches if this is the full name (not a prefix)
+	if prefix == false {
+		for _, illegalName := range NameMayNotBe {
+			if name == illegalName {
+				return false, fmt.Sprintf(`name may not be %q`, illegalName)
+			}
+		}
+	}
+
+	for _, illegalContent := range NameMayNotContain {
+		if strings.Contains(name, illegalContent) {
+			return false, fmt.Sprintf(`name may not contain %q`, illegalContent)
+		}
+	}
+
+	return true, ""
+}