k8s.io/apiserver@v0.31.1/pkg/audit/format.go (about)

     1  /*
     2  Copyright 2017 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package audit
    18  
    19  import (
    20  	"fmt"
    21  	"strconv"
    22  	"strings"
    23  	"time"
    24  
    25  	auditinternal "k8s.io/apiserver/pkg/apis/audit"
    26  )
    27  
    28  // EventString creates a 1-line text representation of an audit event, using a subset of the
    29  // information in the event struct.
    30  func EventString(ev *auditinternal.Event) string {
    31  	username := "<none>"
    32  	groups := "<none>"
    33  	if len(ev.User.Username) > 0 {
    34  		username = ev.User.Username
    35  		if len(ev.User.Groups) > 0 {
    36  			groups = auditStringSlice(ev.User.Groups)
    37  		}
    38  	}
    39  	asuser := "<self>"
    40  	asgroups := "<lookup>"
    41  	if ev.ImpersonatedUser != nil {
    42  		asuser = ev.ImpersonatedUser.Username
    43  		if ev.ImpersonatedUser.Groups != nil {
    44  			asgroups = auditStringSlice(ev.ImpersonatedUser.Groups)
    45  		}
    46  	}
    47  
    48  	namespace := "<none>"
    49  	if ev.ObjectRef != nil && len(ev.ObjectRef.Namespace) != 0 {
    50  		namespace = ev.ObjectRef.Namespace
    51  	}
    52  
    53  	response := "<deferred>"
    54  	if ev.ResponseStatus != nil {
    55  		response = strconv.Itoa(int(ev.ResponseStatus.Code))
    56  	}
    57  
    58  	ip := "<unknown>"
    59  	if len(ev.SourceIPs) > 0 {
    60  		ip = ev.SourceIPs[0]
    61  	}
    62  
    63  	return fmt.Sprintf("%s AUDIT: id=%q stage=%q ip=%q method=%q user=%q groups=%q as=%q asgroups=%q user-agent=%q namespace=%q uri=%q response=\"%s\"",
    64  		ev.RequestReceivedTimestamp.Format(time.RFC3339Nano), ev.AuditID, ev.Stage, ip, ev.Verb, username, groups, asuser, asgroups, ev.UserAgent, namespace, ev.RequestURI, response)
    65  }
    66  
    67  func auditStringSlice(inList []string) string {
    68  	quotedElements := make([]string, len(inList))
    69  	for i, in := range inList {
    70  		quotedElements[i] = fmt.Sprintf("%q", in)
    71  	}
    72  	return strings.Join(quotedElements, ",")
    73  }