1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ldap
import (
"fmt"
"github.com/SpruceHealth/asn1-ber"
)
const (
ControlTypePaging = "1.2.840.113556.1.4.319"
)
var ControlTypeMap = map[string]string{
ControlTypePaging: "Paging",
}
type Control interface {
GetControlType() string
Encode() *ber.Packet
String() string
}
type ControlString struct {
ControlType string
Criticality bool
ControlValue string
}
func (c *ControlString) GetControlType() string {
return c.ControlType
}
func (c *ControlString) Encode() *ber.Packet {
packet := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Control")
packet.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, c.ControlType, "Control Type ("+ControlTypeMap[c.ControlType]+")"))
if c.Criticality {
packet.AppendChild(ber.NewBoolean(ber.ClassUniversal, ber.TypePrimitive, ber.TagBoolean, c.Criticality, "Criticality"))
}
packet.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, c.ControlValue, "Control Value"))
return packet
}
func (c *ControlString) String() string {
return fmt.Sprintf("Control Type: %s (%q) Criticality: %t Control Value: %s", ControlTypeMap[c.ControlType], c.ControlType, c.Criticality, c.ControlValue)
}
type ControlPaging struct {
PagingSize uint32
Cookie []byte
}
func (c *ControlPaging) GetControlType() string {
return ControlTypePaging
}
func (c *ControlPaging) Encode() *ber.Packet {
packet := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Control")
packet.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, ControlTypePaging, "Control Type ("+ControlTypeMap[ControlTypePaging]+")"))
p2 := ber.Encode(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, nil, "Control Value (Paging)")
seq := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Search Control Value")
seq.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagInteger, uint64(c.PagingSize), "Paging Size"))
cookie := ber.Encode(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, nil, "Cookie")
cookie.Value = c.Cookie
cookie.Data.Write(c.Cookie)
seq.AppendChild(cookie)
p2.AppendChild(seq)
packet.AppendChild(p2)
return packet
}
func (c *ControlPaging) String() string {
return fmt.Sprintf(
"Control Type: %s (%q) Criticality: %t PagingSize: %d Cookie: %q",
ControlTypeMap[ControlTypePaging],
ControlTypePaging,
false,
c.PagingSize,
c.Cookie)
}
func (c *ControlPaging) SetCookie(cookie []byte) {
c.Cookie = cookie
}
func FindControl(controls []Control, controlType string) Control {
for _, c := range controls {
if c.GetControlType() == controlType {
return c
}
}
return nil
}
func DecodeControl(packet *ber.Packet) Control {
ControlType := packet.Children[0].Value.(string)
Criticality := false
packet.Children[0].Description = "Control Type (" + ControlTypeMap[ControlType] + ")"
value := packet.Children[1]
if len(packet.Children) == 3 {
value = packet.Children[2]
packet.Children[1].Description = "Criticality"
Criticality = packet.Children[1].Value.(bool)
}
value.Description = "Control Value"
switch ControlType {
case ControlTypePaging:
value.Description += " (Paging)"
c := new(ControlPaging)
if value.Value != nil {
valueChildren := ber.DecodePacket(value.Data.Bytes())
value.Data.Truncate(0)
value.Value = nil
value.AppendChild(valueChildren)
}
value = value.Children[0]
value.Description = "Search Control Value"
value.Children[0].Description = "Paging Size"
value.Children[1].Description = "Cookie"
c.PagingSize = uint32(value.Children[0].Value.(uint64))
c.Cookie = value.Children[1].Data.Bytes()
value.Children[1].Value = c.Cookie
return c
}
c := new(ControlString)
c.ControlType = ControlType
c.Criticality = Criticality
c.ControlValue = value.Value.(string)
return c
}
func NewControlString(controlType string, criticality bool, controlValue string) *ControlString {
return &ControlString{
ControlType: controlType,
Criticality: criticality,
ControlValue: controlValue,
}
}
func NewControlPaging(pagingSize uint32) *ControlPaging {
return &ControlPaging{PagingSize: pagingSize}
}
func encodeControls(controls []Control) *ber.Packet {
packet := ber.Encode(ber.ClassContext, ber.TypeConstructed, 0, nil, "Controls")
for _, control := range controls {
packet.AppendChild(control.Encode())
}
return packet
}
|
