feat: add crd gen

Signed-off-by: runzexia <runzexia@yunify.com>

vendor/k8s.io/apiserver/pkg/authentication/token/tokenfile/tokenfile.go

@@ -0,0 +1,99 @@
+/*
+Copyright 2014 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 tokenfile
+
+import (
+	"context"
+	"encoding/csv"
+	"fmt"
+	"io"
+	"os"
+	"strings"
+
+	"k8s.io/apiserver/pkg/authentication/authenticator"
+	"k8s.io/apiserver/pkg/authentication/user"
+	"k8s.io/klog"
+)
+
+type TokenAuthenticator struct {
+	tokens map[string]*user.DefaultInfo
+}
+
+// New returns a TokenAuthenticator for a single token
+func New(tokens map[string]*user.DefaultInfo) *TokenAuthenticator {
+	return &TokenAuthenticator{
+		tokens: tokens,
+	}
+}
+
+// NewCSV returns a TokenAuthenticator, populated from a CSV file.
+// The CSV file must contain records in the format "token,username,useruid"
+func NewCSV(path string) (*TokenAuthenticator, error) {
+	file, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	recordNum := 0
+	tokens := make(map[string]*user.DefaultInfo)
+	reader := csv.NewReader(file)
+	reader.FieldsPerRecord = -1
+	for {
+		record, err := reader.Read()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return nil, err
+		}
+		if len(record) < 3 {
+			return nil, fmt.Errorf("token file '%s' must have at least 3 columns (token, user name, user uid), found %d", path, len(record))
+		}
+
+		recordNum++
+		if record[0] == "" {
+			klog.Warningf("empty token has been found in token file '%s', record number '%d'", path, recordNum)
+			continue
+		}
+
+		obj := &user.DefaultInfo{
+			Name: record[1],
+			UID:  record[2],
+		}
+		if _, exist := tokens[record[0]]; exist {
+			klog.Warningf("duplicate token has been found in token file '%s', record number '%d'", path, recordNum)
+		}
+		tokens[record[0]] = obj
+
+		if len(record) >= 4 {
+			obj.Groups = strings.Split(record[3], ",")
+		}
+	}
+
+	return &TokenAuthenticator{
+		tokens: tokens,
+	}, nil
+}
+
+func (a *TokenAuthenticator) AuthenticateToken(ctx context.Context, value string) (*authenticator.Response, bool, error) {
+	user, ok := a.tokens[value]
+	if !ok {
+		return nil, false, nil
+	}
+	return &authenticator.Response{User: user}, true, nil
+}