vendor files

vendor/k8s.io/kubernetes/pkg/auth/nodeidentifier/default.go

@@ -0,0 +1,66 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+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 nodeidentifier
+
+import (
+	"strings"
+
+	"k8s.io/apiserver/pkg/authentication/user"
+)
+
+// NewDefaultNodeIdentifier returns a default NodeIdentifier implementation,
+// which returns isNode=true if the user groups contain the system:nodes group
+// and the user name matches the format system:node:<nodeName>, and populates
+// nodeName if isNode is true
+func NewDefaultNodeIdentifier() NodeIdentifier {
+	return defaultNodeIdentifier{}
+}
+
+// defaultNodeIdentifier implements NodeIdentifier
+type defaultNodeIdentifier struct{}
+
+// nodeUserNamePrefix is the prefix for usernames in the form `system:node:<nodeName>`
+const nodeUserNamePrefix = "system:node:"
+
+// NodeIdentity returns isNode=true if the user groups contain the system:nodes
+// group and the user name matches the format system:node:<nodeName>, and
+// populates nodeName if isNode is true
+func (defaultNodeIdentifier) NodeIdentity(u user.Info) (string, bool) {
+	// Make sure we're a node, and can parse the node name
+	if u == nil {
+		return "", false
+	}
+
+	userName := u.GetName()
+	if !strings.HasPrefix(userName, nodeUserNamePrefix) {
+		return "", false
+	}
+
+	isNode := false
+	for _, g := range u.GetGroups() {
+		if g == user.NodesGroup {
+			isNode = true
+			break
+		}
+	}
+	if !isNode {
+		return "", false
+	}
+
+	nodeName := strings.TrimPrefix(userName, nodeUserNamePrefix)
+	return nodeName, true
+}