ldap

package
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Published: May 27, 2016 License: BSD-3-Clause, AGPL-3.0, Apache-2.0 Imports: 16 Imported by: 0

README

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Basic LDAP v3 functionality for the GO programming language.

Install

For the latest version use:

go get gopkg.in/ldap.v2

Import the latest version with:

import "gopkg.in/ldap.v2"

Required Libraries:

  • gopkg.in/asn1-ber.v1

Working:

  • Connecting to LDAP server
  • Binding to LDAP server
  • Searching for entries
  • Compiling string filters to LDAP filters
  • Paging Search Results
  • Modify Requests / Responses
  • Add Requests / Responses
  • Delete Requests / Responses
  • Better Unicode support

Examples:

  • search
  • modify

Tests Implemented:

  • Filter Compile / Decompile

TODO:

  • Add Requests / Responses
  • Delete Requests / Responses
  • Modify DN Requests / Responses
  • Compare Requests / Responses
  • Implement Tests / Benchmarks

The Go gopher was designed by Renee French. (http://reneefrench.blogspot.com/) The design is licensed under the Creative Commons 3.0 Attributions license. Read this article for more details: http://blog.golang.org/gopher

Documentation

Overview

Package ldap provides basic LDAP v3 functionality.

Index

Constants

View Source
const (
	MessageQuit     = 0
	MessageRequest  = 1
	MessageResponse = 2
	MessageFinish   = 3
)
View Source
const (
	ControlTypePaging                 = "1.2.840.113556.1.4.319"
	ControlTypeBeheraPasswordPolicy   = "1.3.6.1.4.1.42.2.27.8.5.1"
	ControlTypeVChuPasswordMustChange = "2.16.840.1.113730.3.4.4"
	ControlTypeVChuPasswordWarning    = "2.16.840.1.113730.3.4.5"
	ControlTypeManageDsaIT            = "2.16.840.1.113730.3.4.2"
)
View Source
const (
	LDAPResultSuccess                      = 0
	LDAPResultOperationsError              = 1
	LDAPResultProtocolError                = 2
	LDAPResultTimeLimitExceeded            = 3
	LDAPResultSizeLimitExceeded            = 4
	LDAPResultCompareFalse                 = 5
	LDAPResultCompareTrue                  = 6
	LDAPResultAuthMethodNotSupported       = 7
	LDAPResultStrongAuthRequired           = 8
	LDAPResultReferral                     = 10
	LDAPResultAdminLimitExceeded           = 11
	LDAPResultUnavailableCriticalExtension = 12
	LDAPResultConfidentialityRequired      = 13
	LDAPResultSaslBindInProgress           = 14
	LDAPResultNoSuchAttribute              = 16
	LDAPResultUndefinedAttributeType       = 17
	LDAPResultInappropriateMatching        = 18
	LDAPResultConstraintViolation          = 19
	LDAPResultAttributeOrValueExists       = 20
	LDAPResultInvalidAttributeSyntax       = 21
	LDAPResultNoSuchObject                 = 32
	LDAPResultAliasProblem                 = 33
	LDAPResultInvalidDNSyntax              = 34
	LDAPResultAliasDereferencingProblem    = 36
	LDAPResultInappropriateAuthentication  = 48
	LDAPResultInvalidCredentials           = 49
	LDAPResultInsufficientAccessRights     = 50
	LDAPResultBusy                         = 51
	LDAPResultUnavailable                  = 52
	LDAPResultUnwillingToPerform           = 53
	LDAPResultLoopDetect                   = 54
	LDAPResultNamingViolation              = 64
	LDAPResultObjectClassViolation         = 65
	LDAPResultNotAllowedOnNonLeaf          = 66
	LDAPResultNotAllowedOnRDN              = 67
	LDAPResultEntryAlreadyExists           = 68
	LDAPResultObjectClassModsProhibited    = 69
	LDAPResultAffectsMultipleDSAs          = 71
	LDAPResultOther                        = 80

	ErrorNetwork            = 200
	ErrorFilterCompile      = 201
	ErrorFilterDecompile    = 202
	ErrorDebugging          = 203
	ErrorUnexpectedMessage  = 204
	ErrorUnexpectedResponse = 205
)

LDAP Result Codes

View Source
const (
	FilterAnd             = 0
	FilterOr              = 1
	FilterNot             = 2
	FilterEqualityMatch   = 3
	FilterSubstrings      = 4
	FilterGreaterOrEqual  = 5
	FilterLessOrEqual     = 6
	FilterPresent         = 7
	FilterApproxMatch     = 8
	FilterExtensibleMatch = 9
)
View Source
const (
	FilterSubstringsInitial = 0
	FilterSubstringsAny     = 1
	FilterSubstringsFinal   = 2
)
View Source
const (
	MatchingRuleAssertionMatchingRule = 1
	MatchingRuleAssertionType         = 2
	MatchingRuleAssertionMatchValue   = 3
	MatchingRuleAssertionDNAttributes = 4
)
View Source
const (
	ApplicationBindRequest           = 0
	ApplicationBindResponse          = 1
	ApplicationUnbindRequest         = 2
	ApplicationSearchRequest         = 3
	ApplicationSearchResultEntry     = 4
	ApplicationSearchResultDone      = 5
	ApplicationModifyRequest         = 6
	ApplicationModifyResponse        = 7
	ApplicationAddRequest            = 8
	ApplicationAddResponse           = 9
	ApplicationDelRequest            = 10
	ApplicationDelResponse           = 11
	ApplicationModifyDNRequest       = 12
	ApplicationModifyDNResponse      = 13
	ApplicationCompareRequest        = 14
	ApplicationCompareResponse       = 15
	ApplicationAbandonRequest        = 16
	ApplicationSearchResultReference = 19
	ApplicationExtendedRequest       = 23
	ApplicationExtendedResponse      = 24
)

LDAP Application Codes

View Source
const (
	BeheraPasswordExpired             = 0
	BeheraAccountLocked               = 1
	BeheraChangeAfterReset            = 2
	BeheraPasswordModNotAllowed       = 3
	BeheraMustSupplyOldPassword       = 4
	BeheraInsufficientPasswordQuality = 5
	BeheraPasswordTooShort            = 6
	BeheraPasswordTooYoung            = 7
	BeheraPasswordInHistory           = 8
)

Ldap Behera Password Policy Draft 10 (https://tools.ietf.org/html/draft-behera-ldap-password-policy-10)

View Source
const (
	AddAttribute     = 0
	DeleteAttribute  = 1
	ReplaceAttribute = 2
)
View Source
const (
	ScopeBaseObject   = 0
	ScopeSingleLevel  = 1
	ScopeWholeSubtree = 2
)
View Source
const (
	NeverDerefAliases   = 0
	DerefInSearching    = 1
	DerefFindingBaseObj = 2
	DerefAlways         = 3
)

Variables

View Source
var ApplicationMap = map[uint8]string{
	ApplicationBindRequest:           "Bind Request",
	ApplicationBindResponse:          "Bind Response",
	ApplicationUnbindRequest:         "Unbind Request",
	ApplicationSearchRequest:         "Search Request",
	ApplicationSearchResultEntry:     "Search Result Entry",
	ApplicationSearchResultDone:      "Search Result Done",
	ApplicationModifyRequest:         "Modify Request",
	ApplicationModifyResponse:        "Modify Response",
	ApplicationAddRequest:            "Add Request",
	ApplicationAddResponse:           "Add Response",
	ApplicationDelRequest:            "Del Request",
	ApplicationDelResponse:           "Del Response",
	ApplicationModifyDNRequest:       "Modify DN Request",
	ApplicationModifyDNResponse:      "Modify DN Response",
	ApplicationCompareRequest:        "Compare Request",
	ApplicationCompareResponse:       "Compare Response",
	ApplicationAbandonRequest:        "Abandon Request",
	ApplicationSearchResultReference: "Search Result Reference",
	ApplicationExtendedRequest:       "Extended Request",
	ApplicationExtendedResponse:      "Extended Response",
}
View Source
var BeheraPasswordPolicyErrorMap = map[int8]string{
	BeheraPasswordExpired:             "Password expired",
	BeheraAccountLocked:               "Account locked",
	BeheraChangeAfterReset:            "Password must be changed",
	BeheraPasswordModNotAllowed:       "Policy prevents password modification",
	BeheraMustSupplyOldPassword:       "Policy requires old password in order to change password",
	BeheraInsufficientPasswordQuality: "Password fails quality checks",
	BeheraPasswordTooShort:            "Password is too short for policy",
	BeheraPasswordTooYoung:            "Password has been changed too recently",
	BeheraPasswordInHistory:           "New password is in list of old passwords",
}
View Source
var ControlTypeMap = map[string]string{
	ControlTypePaging:               "Paging",
	ControlTypeBeheraPasswordPolicy: "Password Policy - Behera Draft",
	ControlTypeManageDsaIT:          "Manage DSA IT",
}
View Source
var DefaultTimeout = 60 * time.Second

DefaultTimeout is a package-level variable that sets the timeout value used for the Dial and DialTLS methods.

WARNING: since this is a package-level variable, setting this value from multiple places will probably result in undesired behaviour.

View Source
var DerefMap = map[int]string{
	NeverDerefAliases:   "NeverDerefAliases",
	DerefInSearching:    "DerefInSearching",
	DerefFindingBaseObj: "DerefFindingBaseObj",
	DerefAlways:         "DerefAlways",
}
View Source
var FilterMap = map[uint64]string{
	FilterAnd:             "And",
	FilterOr:              "Or",
	FilterNot:             "Not",
	FilterEqualityMatch:   "Equality Match",
	FilterSubstrings:      "Substrings",
	FilterGreaterOrEqual:  "Greater Or Equal",
	FilterLessOrEqual:     "Less Or Equal",
	FilterPresent:         "Present",
	FilterApproxMatch:     "Approx Match",
	FilterExtensibleMatch: "Extensible Match",
}
View Source
var FilterSubstringsMap = map[uint64]string{
	FilterSubstringsInitial: "Substrings Initial",
	FilterSubstringsAny:     "Substrings Any",
	FilterSubstringsFinal:   "Substrings Final",
}
View Source
var LDAPResultCodeMap = map[uint8]string{
	LDAPResultSuccess:                      "Success",
	LDAPResultOperationsError:              "Operations Error",
	LDAPResultProtocolError:                "Protocol Error",
	LDAPResultTimeLimitExceeded:            "Time Limit Exceeded",
	LDAPResultSizeLimitExceeded:            "Size Limit Exceeded",
	LDAPResultCompareFalse:                 "Compare False",
	LDAPResultCompareTrue:                  "Compare True",
	LDAPResultAuthMethodNotSupported:       "Auth Method Not Supported",
	LDAPResultStrongAuthRequired:           "Strong Auth Required",
	LDAPResultReferral:                     "Referral",
	LDAPResultAdminLimitExceeded:           "Admin Limit Exceeded",
	LDAPResultUnavailableCriticalExtension: "Unavailable Critical Extension",
	LDAPResultConfidentialityRequired:      "Confidentiality Required",
	LDAPResultSaslBindInProgress:           "Sasl Bind In Progress",
	LDAPResultNoSuchAttribute:              "No Such Attribute",
	LDAPResultUndefinedAttributeType:       "Undefined Attribute Type",
	LDAPResultInappropriateMatching:        "Inappropriate Matching",
	LDAPResultConstraintViolation:          "Constraint Violation",
	LDAPResultAttributeOrValueExists:       "Attribute Or Value Exists",
	LDAPResultInvalidAttributeSyntax:       "Invalid Attribute Syntax",
	LDAPResultNoSuchObject:                 "No Such Object",
	LDAPResultAliasProblem:                 "Alias Problem",
	LDAPResultInvalidDNSyntax:              "Invalid DN Syntax",
	LDAPResultAliasDereferencingProblem:    "Alias Dereferencing Problem",
	LDAPResultInappropriateAuthentication:  "Inappropriate Authentication",
	LDAPResultInvalidCredentials:           "Invalid Credentials",
	LDAPResultInsufficientAccessRights:     "Insufficient Access Rights",
	LDAPResultBusy:                         "Busy",
	LDAPResultUnavailable:                  "Unavailable",
	LDAPResultUnwillingToPerform:           "Unwilling To Perform",
	LDAPResultLoopDetect:                   "Loop Detect",
	LDAPResultNamingViolation:              "Naming Violation",
	LDAPResultObjectClassViolation:         "Object Class Violation",
	LDAPResultNotAllowedOnNonLeaf:          "Not Allowed On Non Leaf",
	LDAPResultNotAllowedOnRDN:              "Not Allowed On RDN",
	LDAPResultEntryAlreadyExists:           "Entry Already Exists",
	LDAPResultObjectClassModsProhibited:    "Object Class Mods Prohibited",
	LDAPResultAffectsMultipleDSAs:          "Affects Multiple DSAs",
	LDAPResultOther:                        "Other",
}
View Source
var MatchingRuleAssertionMap = map[uint64]string{
	MatchingRuleAssertionMatchingRule: "Matching Rule Assertion Matching Rule",
	MatchingRuleAssertionType:         "Matching Rule Assertion Type",
	MatchingRuleAssertionMatchValue:   "Matching Rule Assertion Match Value",
	MatchingRuleAssertionDNAttributes: "Matching Rule Assertion DN Attributes",
}
View Source
var ScopeMap = map[int]string{
	ScopeBaseObject:   "Base Object",
	ScopeSingleLevel:  "Single Level",
	ScopeWholeSubtree: "Whole Subtree",
}

Functions

func CompileFilter

func CompileFilter(filter string) (*ber.Packet, error)

func DebugBinaryFile

func DebugBinaryFile(fileName string) error

func DecompileFilter

func DecompileFilter(packet *ber.Packet) (ret string, err error)

func EscapeFilter

func EscapeFilter(filter string) string

EscapeFilter escapes from the provided LDAP filter string the special characters in the set `()*\` and those out of the range 0 < c < 0x80, as defined in RFC4515.

func IsErrorWithCode

func IsErrorWithCode(err error, desiredResultCode uint8) bool

func NewError

func NewError(resultCode uint8, err error) error

Types

type AddRequest

type AddRequest struct {
	// contains filtered or unexported fields
}

func NewAddRequest

func NewAddRequest(dn string) *AddRequest

func (*AddRequest) Attribute

func (a *AddRequest) Attribute(attrType string, attrVals []string)

type Attribute

type Attribute struct {
	// contains filtered or unexported fields
}

type AttributeTypeAndValue

type AttributeTypeAndValue struct {
	Type  string
	Value string
}

type Client

type Client interface {
	Start()
	StartTLS(config *tls.Config) error
	Close()

	Bind(username, password string) error
	SimpleBind(simpleBindRequest *SimpleBindRequest) (*SimpleBindResult, error)

	Add(addRequest *AddRequest) error
	Del(delRequest *DelRequest) error
	Modify(modifyRequest *ModifyRequest) error

	Compare(dn, attribute, value string) (bool, error)
	PasswordModify(passwordModifyRequest *PasswordModifyRequest) (*PasswordModifyResult, error)

	Search(searchRequest *SearchRequest) (*SearchResult, error)
	SearchWithPaging(searchRequest *SearchRequest, pagingSize uint32) (*SearchResult, error)
}

Client knows how to interact with an LDAP server

type Conn

type Conn struct {
	Debug debugging
	// contains filtered or unexported fields
}

Conn represents an LDAP Connection

func Dial

func Dial(network, addr string) (*Conn, error)

Dial connects to the given address on the given network using net.Dial and then returns a new Conn for the connection.

func DialTLS

func DialTLS(network, addr string, config *tls.Config) (*Conn, error)

DialTLS connects to the given address on the given network using tls.Dial and then returns a new Conn for the connection.

func NewConn

func NewConn(conn net.Conn, isTLS bool) *Conn

NewConn returns a new Conn using conn for network I/O.

func (*Conn) Add

func (l *Conn) Add(addRequest *AddRequest) error

func (*Conn) Bind

func (l *Conn) Bind(username, password string) error

func (*Conn) Close

func (l *Conn) Close()

Close closes the connection.

func (*Conn) Compare

func (l *Conn) Compare(dn, attribute, value string) (bool, error)

Compare checks to see if the attribute of the dn matches value. Returns true if it does otherwise false with any error that occurs if any.

func (*Conn) Del

func (l *Conn) Del(delRequest *DelRequest) error

func (*Conn) Modify

func (l *Conn) Modify(modifyRequest *ModifyRequest) error

func (*Conn) PasswordModify

func (l *Conn) PasswordModify(passwordModifyRequest *PasswordModifyRequest) (*PasswordModifyResult, error)

func (*Conn) Search

func (l *Conn) Search(searchRequest *SearchRequest) (*SearchResult, error)

func (*Conn) SearchWithPaging

func (l *Conn) SearchWithPaging(searchRequest *SearchRequest, pagingSize uint32) (*SearchResult, error)

func (*Conn) SimpleBind

func (l *Conn) SimpleBind(simpleBindRequest *SimpleBindRequest) (*SimpleBindResult, error)

func (*Conn) Start

func (l *Conn) Start()

func (*Conn) StartTLS

func (l *Conn) StartTLS(config *tls.Config) error

StartTLS sends the command to start a TLS session and then creates a new TLS Client

type Control

type Control interface {
	GetControlType() string
	Encode() *ber.Packet
	String() string
}

func DecodeControl

func DecodeControl(packet *ber.Packet) Control

func FindControl

func FindControl(controls []Control, controlType string) Control

type ControlBeheraPasswordPolicy

type ControlBeheraPasswordPolicy struct {
	Expire      int64
	Grace       int64
	Error       int8
	ErrorString string
}

func NewControlBeheraPasswordPolicy

func NewControlBeheraPasswordPolicy() *ControlBeheraPasswordPolicy

func (*ControlBeheraPasswordPolicy) Encode

func (c *ControlBeheraPasswordPolicy) Encode() *ber.Packet

func (*ControlBeheraPasswordPolicy) GetControlType

func (c *ControlBeheraPasswordPolicy) GetControlType() string

func (*ControlBeheraPasswordPolicy) String

func (c *ControlBeheraPasswordPolicy) String() string

type ControlManageDsaIT

type ControlManageDsaIT struct {
	Criticality bool
}

func NewControlManageDsaIT

func NewControlManageDsaIT(Criticality bool) *ControlManageDsaIT

func (*ControlManageDsaIT) Encode

func (c *ControlManageDsaIT) Encode() *ber.Packet

func (*ControlManageDsaIT) GetControlType

func (c *ControlManageDsaIT) GetControlType() string

func (*ControlManageDsaIT) String

func (c *ControlManageDsaIT) String() string

type ControlPaging

type ControlPaging struct {
	PagingSize uint32
	Cookie     []byte
}

func NewControlPaging

func NewControlPaging(pagingSize uint32) *ControlPaging

func (*ControlPaging) Encode

func (c *ControlPaging) Encode() *ber.Packet

func (*ControlPaging) GetControlType

func (c *ControlPaging) GetControlType() string

func (*ControlPaging) SetCookie

func (c *ControlPaging) SetCookie(cookie []byte)

func (*ControlPaging) String

func (c *ControlPaging) String() string

type ControlString

type ControlString struct {
	ControlType  string
	Criticality  bool
	ControlValue string
}

func NewControlString

func NewControlString(controlType string, criticality bool, controlValue string) *ControlString

func (*ControlString) Encode

func (c *ControlString) Encode() *ber.Packet

func (*ControlString) GetControlType

func (c *ControlString) GetControlType() string

func (*ControlString) String

func (c *ControlString) String() string

type ControlVChuPasswordMustChange

type ControlVChuPasswordMustChange struct {
	MustChange bool
}

func (*ControlVChuPasswordMustChange) Encode

func (c *ControlVChuPasswordMustChange) Encode() *ber.Packet

func (*ControlVChuPasswordMustChange) GetControlType

func (c *ControlVChuPasswordMustChange) GetControlType() string

func (*ControlVChuPasswordMustChange) String

type ControlVChuPasswordWarning

type ControlVChuPasswordWarning struct {
	Expire int64
}

func (*ControlVChuPasswordWarning) Encode

func (c *ControlVChuPasswordWarning) Encode() *ber.Packet

func (*ControlVChuPasswordWarning) GetControlType

func (c *ControlVChuPasswordWarning) GetControlType() string

func (*ControlVChuPasswordWarning) String

func (c *ControlVChuPasswordWarning) String() string

type DN

type DN struct {
	RDNs []*RelativeDN
}

func ParseDN

func ParseDN(str string) (*DN, error)

type DelRequest

type DelRequest struct {
	DN       string
	Controls []Control
}

func NewDelRequest

func NewDelRequest(DN string,
	Controls []Control) *DelRequest

type Entry

type Entry struct {
	DN         string
	Attributes []*EntryAttribute
}

func NewEntry

func NewEntry(dn string, attributes map[string][]string) *Entry

NewEntry returns an Entry object with the specified distinguished name and attribute key-value pairs. The map of attributes is accessed in alphabetical order of the keys in order to ensure that, for the same input map of attributes, the output entry will contain the same order of attributes

func (*Entry) GetAttributeValue

func (e *Entry) GetAttributeValue(attribute string) string

func (*Entry) GetAttributeValues

func (e *Entry) GetAttributeValues(attribute string) []string

func (*Entry) GetRawAttributeValue

func (e *Entry) GetRawAttributeValue(attribute string) []byte

func (*Entry) GetRawAttributeValues

func (e *Entry) GetRawAttributeValues(attribute string) [][]byte

func (*Entry) PrettyPrint

func (e *Entry) PrettyPrint(indent int)

func (*Entry) Print

func (e *Entry) Print()

type EntryAttribute

type EntryAttribute struct {
	Name       string
	Values     []string
	ByteValues [][]byte
}

func NewEntryAttribute

func NewEntryAttribute(name string, values []string) *EntryAttribute

NewEntryAttribute returns a new EntryAttribute with the desired key-value pair

func (*EntryAttribute) PrettyPrint

func (e *EntryAttribute) PrettyPrint(indent int)

func (*EntryAttribute) Print

func (e *EntryAttribute) Print()

type Error

type Error struct {
	Err        error
	ResultCode uint8
}

func (*Error) Error

func (e *Error) Error() string

type ModifyRequest

type ModifyRequest struct {
	// contains filtered or unexported fields
}

func NewModifyRequest

func NewModifyRequest(
	dn string,
) *ModifyRequest

func (*ModifyRequest) Add

func (m *ModifyRequest) Add(attrType string, attrVals []string)

func (*ModifyRequest) Delete

func (m *ModifyRequest) Delete(attrType string, attrVals []string)

func (*ModifyRequest) Replace

func (m *ModifyRequest) Replace(attrType string, attrVals []string)

type PartialAttribute

type PartialAttribute struct {
	// contains filtered or unexported fields
}

type PasswordModifyRequest

type PasswordModifyRequest struct {
	UserIdentity string
	OldPassword  string
	NewPassword  string
}

func NewPasswordModifyRequest

func NewPasswordModifyRequest(userIdentity string, oldPassword string, newPassword string) *PasswordModifyRequest

Create a new PasswordModifyRequest

According to the RFC 3602: userIdentity is a string representing the user associated with the request. This string may or may not be an LDAPDN (RFC 2253). If userIdentity is empty then the operation will act on the user associated with the session.

oldPassword is the current user's password, it can be empty or it can be needed depending on the session user access rights (usually an administrator can change a user's password without knowing the current one) and the password policy (see pwdSafeModify password policy's attribute)

newPassword is the desired user's password. If empty the server can return an error or generate a new password that will be available in the PasswordModifyResult.GeneratedPassword

type PasswordModifyResult

type PasswordModifyResult struct {
	GeneratedPassword string
}

type RelativeDN

type RelativeDN struct {
	Attributes []*AttributeTypeAndValue
}

type SearchRequest

type SearchRequest struct {
	BaseDN       string
	Scope        int
	DerefAliases int
	SizeLimit    int
	TimeLimit    int
	TypesOnly    bool
	Filter       string
	Attributes   []string
	Controls     []Control
}

func NewSearchRequest

func NewSearchRequest(
	BaseDN string,
	Scope, DerefAliases, SizeLimit, TimeLimit int,
	TypesOnly bool,
	Filter string,
	Attributes []string,
	Controls []Control,
) *SearchRequest

type SearchResult

type SearchResult struct {
	Entries   []*Entry
	Referrals []string
	Controls  []Control
}

func (*SearchResult) PrettyPrint

func (s *SearchResult) PrettyPrint(indent int)

func (*SearchResult) Print

func (s *SearchResult) Print()

type SimpleBindRequest

type SimpleBindRequest struct {
	Username string
	Password string
	Controls []Control
}

func NewSimpleBindRequest

func NewSimpleBindRequest(username string, password string, controls []Control) *SimpleBindRequest

type SimpleBindResult

type SimpleBindResult struct {
	Controls []Control
}

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