ldap

package module
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 Go to latest Published: Aug 10, 2022 License: MIT Imports: 25 Imported by: 0

README

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Basic LDAP v3 functionality for the GO programming language.

The library implements the following specifications:

Features:

  • Connecting to LDAP server (non-TLS, TLS, STARTTLS)
  • Binding to LDAP server
  • Searching for entries
  • Filter Compile / Decompile
  • Paging Search Results
  • Modify Requests / Responses
  • Add Requests / Responses
  • Delete Requests / Responses
  • Modify DN Requests / Responses

Go Modules:

go get github.com/go-ldap/ldap/v3

As go-ldap was v2+ when Go Modules came out, updating to Go Modules would be considered a breaking change.

To maintain backwards compatability, we ultimately decided to use subfolders (as v3 was already a branch). Whilst this duplicates the code, we can move toward implementing a backwards-compatible versioning system that allows for code reuse. The alternative would be to increment the version number, however we believe that this would confuse users as v3 is in line with LDAPv3 (RFC-4511) https://tools.ietf.org/html/rfc4511

For more info, please visit the pull request that updated to modules. https://github.com/go-ldap/ldap/pull/247

To install with GOMODULE111=off, use go get github.com/go-ldap/ldap https://golang.org/cmd/go/#hdr-Legacy_GOPATH_go_get

As always, we are looking for contributors with great ideas on how to best move forward.

Contributing:

Bug reports and pull requests are welcome!

Before submitting a pull request, please make sure tests and verification scripts pass:

make all

To set up a pre-push hook to run the tests and verify scripts before pushing:

ln -s ../../.githooks/pre-push .git/hooks/pre-push

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.

Example (Beherappolicy) 
l, err := DialURL("ldap://ldap.example.com:389")
if err != nil {
	log.Fatal(err)
}
defer l.Close()

controls := []Control{}
controls = append(controls, NewControlBeheraPasswordPolicy())
bindRequest := NewSimpleBindRequest("cn=admin,dc=example,dc=com", "password", controls)

r, err := l.SimpleBind(bindRequest)
ppolicyControl := FindControl(r.Controls, ControlTypeBeheraPasswordPolicy)

var ppolicy *ControlBeheraPasswordPolicy
if ppolicyControl != nil {
	ppolicy = ppolicyControl.(*ControlBeheraPasswordPolicy)
} else {
	log.Printf("ppolicyControl response not available.\n")
}
if err != nil {
	errStr := "ERROR: Cannot bind: " + err.Error()
	if ppolicy != nil && ppolicy.Error >= 0 {
		errStr += ":" + ppolicy.ErrorString
	}
	log.Print(errStr)
} else {
	logStr := "Login Ok"
	if ppolicy != nil {
		if ppolicy.Expire >= 0 {
			logStr += fmt.Sprintf(". Password expires in %d seconds\n", ppolicy.Expire)
		} else if ppolicy.Grace >= 0 {
			logStr += fmt.Sprintf(". Password expired, %d grace logins remain\n", ppolicy.Grace)
		}
	}
	log.Print(logStr)
}

Output:
Example (UserAuthentication)

Example_userAuthentication shows how a typical application can verify a login attempt Refer to https://github.com/go-ldap/ldap/issues/93 for issues revolving around unauthenticated binds, with zero length passwords 

// The username and password we want to check
username := "someuser"
password := "userpassword"

bindusername := "readonly"
bindpassword := "password"

l, err := DialURL("ldap://ldap.example.com:389")
if err != nil {
	log.Fatal(err)
}
defer l.Close()

// Reconnect with TLS
err = l.StartTLS(&tls.Config{InsecureSkipVerify: true})
if err != nil {
	log.Fatal(err)
}

// First bind with a read only user
err = l.Bind(bindusername, bindpassword)
if err != nil {
	log.Fatal(err)
}

// Search for the given username
searchRequest := NewSearchRequest(
	"dc=example,dc=com",
	ScopeWholeSubtree, NeverDerefAliases, 0, 0, false,
	fmt.Sprintf("(&(objectClass=organizationalPerson)(uid=%s))", EscapeFilter(username)),
	[]string{"dn"},
	nil,
)

sr, err := l.Search(searchRequest)
if err != nil {
	log.Fatal(err)
}

if len(sr.Entries) != 1 {
	log.Fatal("User does not exist or too many entries returned")
}

userdn := sr.Entries[0].DN

// Bind as the user to verify their password
err = l.Bind(userdn, password)
if err != nil {
	log.Fatal(err)
}

// Rebind as the read only user for any further queries
err = l.Bind(bindusername, bindpassword)
if err != nil {
	log.Fatal(err)
}

Output:
Example (Vchuppolicy) 
l, err := DialURL("ldap://ldap.example.com:389")
if err != nil {
	log.Fatal(err)
}
defer l.Close()
l.Debug = true

bindRequest := NewSimpleBindRequest("cn=admin,dc=example,dc=com", "password", nil)

r, err := l.SimpleBind(bindRequest)

passwordMustChangeControl := FindControl(r.Controls, ControlTypeVChuPasswordMustChange)
var passwordMustChange *ControlVChuPasswordMustChange
if passwordMustChangeControl != nil {
	passwordMustChange = passwordMustChangeControl.(*ControlVChuPasswordMustChange)
}

if passwordMustChange != nil && passwordMustChange.MustChange {
	log.Printf("Password Must be changed.\n")
}

passwordWarningControl := FindControl(r.Controls, ControlTypeVChuPasswordWarning)

var passwordWarning *ControlVChuPasswordWarning
if passwordWarningControl != nil {
	passwordWarning = passwordWarningControl.(*ControlVChuPasswordWarning)
} else {
	log.Printf("ppolicyControl response not available.\n")
}
if err != nil {
	log.Print("ERROR: Cannot bind: " + err.Error())
} else {
	logStr := "Login Ok"
	if passwordWarning != nil {
		if passwordWarning.Expire >= 0 {
			logStr += fmt.Sprintf(". Password expires in %d seconds\n", passwordWarning.Expire)
		}
	}
	log.Print(logStr)
}

Output:

Index

Examples

Constants

View Source 
const (
	// MessageQuit causes the processMessages loop to exit
	MessageQuit = 0
	// MessageRequest sends a request to the server
	MessageRequest = 1
	// MessageResponse receives a response from the server
	MessageResponse = 2
	// MessageFinish indicates the client considers a particular message ID to be finished
	MessageFinish = 3
	// MessageTimeout indicates the client-specified timeout for a particular message ID has been reached
	MessageTimeout = 4
)
View Source 
const (
	// DefaultLdapPort default ldap port for pure TCP connection
	DefaultLdapPort = "389"
	// DefaultLdapsPort default ldap port for SSL connection
	DefaultLdapsPort = "636"
)
View Source 
const (
	// ControlTypePaging - https://www.ietf.org/rfc/rfc2696.txt
	ControlTypePaging = "1.2.840.113556.1.4.319"
	// ControlTypeBeheraPasswordPolicy - https://tools.ietf.org/html/draft-behera-ldap-password-policy-10
	ControlTypeBeheraPasswordPolicy = "1.3.6.1.4.1.42.2.27.8.5.1"
	// ControlTypeVChuPasswordMustChange - https://tools.ietf.org/html/draft-vchu-ldap-pwd-policy-00
	ControlTypeVChuPasswordMustChange = "2.16.840.1.113730.3.4.4"
	// ControlTypeVChuPasswordWarning - https://tools.ietf.org/html/draft-vchu-ldap-pwd-policy-00
	ControlTypeVChuPasswordWarning = "2.16.840.1.113730.3.4.5"
	// ControlTypeManageDsaIT - https://tools.ietf.org/html/rfc3296
	ControlTypeManageDsaIT = "2.16.840.1.113730.3.4.2"
	// ControlTypeWhoAmI - https://tools.ietf.org/html/rfc4532
	ControlTypeWhoAmI = "1.3.6.1.4.1.4203.1.11.3"
	// ControlTypeSubTreeDelete - https://datatracker.ietf.org/doc/html/draft-armijo-ldap-treedelete-02
	ControlTypeSubtreeDelete = "1.2.840.113556.1.4.805"

	// ControlTypeMicrosoftNotification - https://msdn.microsoft.com/en-us/library/aa366983(v=vs.85).aspx
	ControlTypeMicrosoftNotification = "1.2.840.113556.1.4.528"
	// ControlTypeMicrosoftShowDeleted - https://msdn.microsoft.com/en-us/library/aa366989(v=vs.85).aspx
	ControlTypeMicrosoftShowDeleted = "1.2.840.113556.1.4.417"
	// ControlTypeMicrosoftServerLinkTTL - https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-adts/f4f523a8-abc0-4b3a-a471-6b2fef135481?redirectedfrom=MSDN
	ControlTypeMicrosoftServerLinkTTL = "1.2.840.113556.1.4.2309"
)
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
	LDAPResultIsLeaf                             = 35
	LDAPResultAliasDereferencingProblem          = 36
	LDAPResultInappropriateAuthentication        = 48
	LDAPResultInvalidCredentials                 = 49
	LDAPResultInsufficientAccessRights           = 50
	LDAPResultBusy                               = 51
	LDAPResultUnavailable                        = 52
	LDAPResultUnwillingToPerform                 = 53
	LDAPResultLoopDetect                         = 54
	LDAPResultSortControlMissing                 = 60
	LDAPResultOffsetRangeError                   = 61
	LDAPResultNamingViolation                    = 64
	LDAPResultObjectClassViolation               = 65
	LDAPResultNotAllowedOnNonLeaf                = 66
	LDAPResultNotAllowedOnRDN                    = 67
	LDAPResultEntryAlreadyExists                 = 68
	LDAPResultObjectClassModsProhibited          = 69
	LDAPResultResultsTooLarge                    = 70
	LDAPResultAffectsMultipleDSAs                = 71
	LDAPResultVirtualListViewErrorOrControlError = 76
	LDAPResultOther                              = 80
	LDAPResultServerDown                         = 81
	LDAPResultLocalError                         = 82
	LDAPResultEncodingError                      = 83
	LDAPResultDecodingError                      = 84
	LDAPResultTimeout                            = 85
	LDAPResultAuthUnknown                        = 86
	LDAPResultFilterError                        = 87
	LDAPResultUserCanceled                       = 88
	LDAPResultParamError                         = 89
	LDAPResultNoMemory                           = 90
	LDAPResultConnectError                       = 91
	LDAPResultNotSupported                       = 92
	LDAPResultControlNotFound                    = 93
	LDAPResultNoResultsReturned                  = 94
	LDAPResultMoreResultsToReturn                = 95
	LDAPResultClientLoop                         = 96
	LDAPResultReferralLimitExceeded              = 97
	LDAPResultInvalidResponse                    = 100
	LDAPResultAmbiguousResponse                  = 101
	LDAPResultTLSNotSupported                    = 112
	LDAPResultIntermediateResponse               = 113
	LDAPResultUnknownType                        = 114
	LDAPResultCanceled                           = 118
	LDAPResultNoSuchOperation                    = 119
	LDAPResultTooLate                            = 120
	LDAPResultCannotCancel                       = 121
	LDAPResultAssertionFailed                    = 122
	LDAPResultAuthorizationDenied                = 123
	LDAPResultSyncRefreshRequired                = 4096

	ErrorNetwork            = 200
	ErrorFilterCompile      = 201
	ErrorFilterDecompile    = 202
	ErrorDebugging          = 203
	ErrorUnexpectedMessage  = 204
	ErrorUnexpectedResponse = 205
	ErrorEmptyPassword      = 206
)

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
)

Filter choices

View Source 
const (
	FilterSubstringsInitial = 0
	FilterSubstringsAny     = 1
	FilterSubstringsFinal   = 2
)

SubstringFilter options

View Source 
const (
	MatchingRuleAssertionMatchingRule = 1
	MatchingRuleAssertionType         = 2
	MatchingRuleAssertionMatchValue   = 3
	MatchingRuleAssertionDNAttributes = 4
)

MatchingRuleAssertion choices

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
	IncrementAttribute = 3 // (https://tools.ietf.org/html/rfc4525)
)

Change operation choices

View Source 
const (
	ScopeBaseObject   = 0
	ScopeSingleLevel  = 1
	ScopeWholeSubtree = 2
)

scope choices

View Source 
const (
	NeverDerefAliases   = 0
	DerefInSearching    = 1
	DerefFindingBaseObj = 2
	DerefAlways         = 3
)

derefAliases

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",
}

ApplicationMap contains human readable descriptions of LDAP Application Codes

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",
}

BeheraPasswordPolicyErrorMap contains human readable descriptions of Behera Password Policy error codes

View Source 
var ControlTypeMap = map[string]string{
	ControlTypePaging:                 "Paging",
	ControlTypeBeheraPasswordPolicy:   "Password Policy - Behera Draft",
	ControlTypeManageDsaIT:            "Manage DSA IT",
	ControlTypeSubtreeDelete:          "Subtree Delete Control",
	ControlTypeMicrosoftNotification:  "Change Notification - Microsoft",
	ControlTypeMicrosoftShowDeleted:   "Show Deleted Objects - Microsoft",
	ControlTypeMicrosoftServerLinkTTL: "Return TTL-DNs for link values with associated expiry times - Microsoft",
}

ControlTypeMap maps controls to text descriptions

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",
}

DerefMap contains human readable descriptions of derefAliases choices

View Source 
var ErrConnUnbound = NewError(ErrorNetwork, errors.New("ldap: connection is closed"))
View Source 
var (
	ErrNilConnection = errors.New("ldap: conn is nil, expected net.Conn")
)
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",
}

FilterMap contains human readable descriptions of Filter choices

View Source 
var FilterSubstringsMap = map[uint64]string{
	FilterSubstringsInitial: "Substrings Initial",
	FilterSubstringsAny:     "Substrings Any",
	FilterSubstringsFinal:   "Substrings Final",
}

FilterSubstringsMap contains human readable descriptions of SubstringFilter choices

View Source 
var LDAPResultCodeMap = map[uint16]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",
	LDAPResultIsLeaf:                             "Is Leaf",
	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",
	LDAPResultSortControlMissing:                 "Sort Control Missing",
	LDAPResultOffsetRangeError:                   "Result Offset Range Error",
	LDAPResultNamingViolation:                    "Naming Violation",
	LDAPResultObjectClassViolation:               "Object Class Violation",
	LDAPResultResultsTooLarge:                    "Results Too Large",
	LDAPResultNotAllowedOnNonLeaf:                "Not Allowed On Non Leaf",
	LDAPResultNotAllowedOnRDN:                    "Not Allowed On RDN",
	LDAPResultEntryAlreadyExists:                 "Entry Already Exists",
	LDAPResultObjectClassModsProhibited:          "Object Class Mods Prohibited",
	LDAPResultAffectsMultipleDSAs:                "Affects Multiple DSAs",
	LDAPResultVirtualListViewErrorOrControlError: "Failed because of a problem related to the virtual list view",
	LDAPResultOther:                              "Other",
	LDAPResultServerDown:                         "Cannot establish a connection",
	LDAPResultLocalError:                         "An error occurred",
	LDAPResultEncodingError:                      "LDAP encountered an error while encoding",
	LDAPResultDecodingError:                      "LDAP encountered an error while decoding",
	LDAPResultTimeout:                            "LDAP timeout while waiting for a response from the server",
	LDAPResultAuthUnknown:                        "The auth method requested in a bind request is unknown",
	LDAPResultFilterError:                        "An error occurred while encoding the given search filter",
	LDAPResultUserCanceled:                       "The user canceled the operation",
	LDAPResultParamError:                         "An invalid parameter was specified",
	LDAPResultNoMemory:                           "Out of memory error",
	LDAPResultConnectError:                       "A connection to the server could not be established",
	LDAPResultNotSupported:                       "An attempt has been made to use a feature not supported LDAP",
	LDAPResultControlNotFound:                    "The controls required to perform the requested operation were not found",
	LDAPResultNoResultsReturned:                  "No results were returned from the server",
	LDAPResultMoreResultsToReturn:                "There are more results in the chain of results",
	LDAPResultClientLoop:                         "A loop has been detected. For example when following referrals",
	LDAPResultReferralLimitExceeded:              "The referral hop limit has been exceeded",
	LDAPResultCanceled:                           "Operation was canceled",
	LDAPResultNoSuchOperation:                    "Server has no knowledge of the operation requested for cancellation",
	LDAPResultTooLate:                            "Too late to cancel the outstanding operation",
	LDAPResultCannotCancel:                       "The identified operation does not support cancellation or the cancel operation cannot be performed",
	LDAPResultAssertionFailed:                    "An assertion control given in the LDAP operation evaluated to false causing the operation to not be performed",
	LDAPResultSyncRefreshRequired:                "Refresh Required",
	LDAPResultInvalidResponse:                    "Invalid Response",
	LDAPResultAmbiguousResponse:                  "Ambiguous Response",
	LDAPResultTLSNotSupported:                    "Tls Not Supported",
	LDAPResultIntermediateResponse:               "Intermediate Response",
	LDAPResultUnknownType:                        "Unknown Type",
	LDAPResultAuthorizationDenied:                "Authorization Denied",

	ErrorNetwork:            "Network Error",
	ErrorFilterCompile:      "Filter Compile Error",
	ErrorFilterDecompile:    "Filter Decompile Error",
	ErrorDebugging:          "Debugging Error",
	ErrorUnexpectedMessage:  "Unexpected Message",
	ErrorUnexpectedResponse: "Unexpected Response",
	ErrorEmptyPassword:      "Empty password not allowed by the client",
}

LDAPResultCodeMap contains string descriptions for LDAP error codes

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",
}

MatchingRuleAssertionMap contains human readable descriptions of MatchingRuleAssertion choices

View Source 
var ScopeMap = map[int]string{
	ScopeBaseObject:   "Base Object",
	ScopeSingleLevel:  "Single Level",
	ScopeWholeSubtree: "Whole Subtree",
}

ScopeMap contains human readable descriptions of scope choices

Functions

func CompileFilter 

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

CompileFilter converts a string representation of a filter into a BER-encoded packet

func DebugBinaryFile 

func DebugBinaryFile(fileName string) error

DebugBinaryFile reads and prints packets from the given filename

func DecompileFilter 

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

DecompileFilter converts a packet representation of a filter into a string representation

func EscapeDN 

func EscapeDN(dn string) string

EscapeDN escapes distinguished names as described in RFC4514. Characters in the set `"+,;<>\` are escaped by prepending a backslash, which is also done for trailing spaces or a leading `#`. Null bytes are replaced with `\00`.

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 GetLDAPError 

func GetLDAPError(packet *ber.Packet) error

GetLDAPError creates an Error out of a BER packet representing a LDAPResult The return is an error object. It can be casted to a Error structure. This function returns nil if resultCode in the LDAPResult sequence is success(0).

func IsErrorAnyOf 

func IsErrorAnyOf(err error, codes ...uint16) bool

IsErrorAnyOf returns true if the given error is an LDAP error with any one of the given result codes

func IsErrorWithCode 

func IsErrorWithCode(err error, desiredResultCode uint16) bool

IsErrorWithCode returns true if the given error is an LDAP error with the given result code

func Logger 

func Logger(l *log.Logger)

Logger allows clients to override the default logger

func NewError 

func NewError(resultCode uint16, err error) error

NewError creates an LDAP error with the given code and underlying error

Types

type AddRequest 

type AddRequest struct {
	// DN identifies the entry being added
	DN string
	// Attributes list the attributes of the new entry
	Attributes []Attribute
	// Controls hold optional controls to send with the request
	Controls []Control
}

AddRequest represents an LDAP AddRequest operation

func NewAddRequest 

func NewAddRequest(dn string, controls []Control) *AddRequest

NewAddRequest returns an AddRequest for the given DN, with no attributes

func (*AddRequest) Attribute 

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

Attribute adds an attribute with the given type and values

type Attribute 

type Attribute struct {
	// Type is the name of the LDAP attribute
	Type string
	// Vals are the LDAP attribute values
	Vals []string
}

Attribute represents an LDAP attribute

type AttributeTypeAndValue 

type AttributeTypeAndValue struct {
	// Type is the attribute type
	Type string
	// Value is the attribute value
	Value string
}

AttributeTypeAndValue represents an attributeTypeAndValue from https://tools.ietf.org/html/rfc4514

func (*AttributeTypeAndValue) Equal 

func (a *AttributeTypeAndValue) Equal(other *AttributeTypeAndValue) bool

Equal returns true if the AttributeTypeAndValue is equivalent to the specified AttributeTypeAndValue Case of the attribute type is not significant

func (*AttributeTypeAndValue) EqualFold 

func (a *AttributeTypeAndValue) EqualFold(other *AttributeTypeAndValue) bool

EqualFold returns true if the AttributeTypeAndValue is equivalent to the specified AttributeTypeAndValue Case of the attribute type and value is not significant

func (*AttributeTypeAndValue) String 

func (a *AttributeTypeAndValue) String() string

String returns a normalized string representation of this attribute type and value pair which is the a lowercased join of the Type and Value with a "=".

type Change 

type Change struct {
	// Operation is the type of change to be made
	Operation uint
	// Modification is the attribute to be modified
	Modification PartialAttribute
}

Change for a ModifyRequest as defined in https://tools.ietf.org/html/rfc4511

type Client 

type Client interface {
	Start()
	StartTLS(*tls.Config) error
	Close()
	IsClosing() bool
	SetTimeout(time.Duration)
	TLSConnectionState() (tls.ConnectionState, bool)

	Bind(username, password string) error
	UnauthenticatedBind(username string) error
	SimpleBind(*SimpleBindRequest) (*SimpleBindResult, error)
	ExternalBind() error
	NTLMUnauthenticatedBind(domain, username string) error
	Unbind() error

	Add(*AddRequest) error
	Del(*DelRequest) error
	Modify(*ModifyRequest) error
	ModifyDN(*ModifyDNRequest) error
	ModifyWithResult(*ModifyRequest) (*ModifyResult, error)

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

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

Client knows how to interact with an LDAP server

type CompareRequest 

type CompareRequest struct {
	DN        string
	Attribute string
	Value     string
}

CompareRequest represents an LDAP CompareRequest operation.

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. @deprecated Use DialURL instead.

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. @deprecated Use DialURL instead.

func DialURL 

func DialURL(addr string, opts ...DialOpt) (*Conn, error)

DialURL connects to the given ldap URL. The following schemas are supported: ldap://, ldaps://, ldapi://. On success a new Conn for the connection is returned.

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

Add performs the given AddRequest

func (*Conn) Bind 

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

Bind performs a bind with the given username and password.

It does not allow unauthenticated bind (i.e. empty password). Use the UnauthenticatedBind method for that.

Example

This example demonstrates how to bind a connection to an ldap user allowing access to restricted attributes that user has access to 

l, err := DialURL("ldap://ldap.example.com:389")
if err != nil {
	log.Fatal(err)
}
defer l.Close()

err = l.Bind("cn=read-only-admin,dc=example,dc=com", "password")
if err != nil {
	log.Fatal(err)
}

Output:

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.

Example

This example demonstrates how to compare an attribute with a value 

l, err := DialURL("ldap://ldap.example.com:389")
if err != nil {
	log.Fatal(err)
}
defer l.Close()

matched, err := l.Compare("cn=user,dc=example,dc=com", "uid", "someuserid")
if err != nil {
	log.Fatal(err)
}

fmt.Println(matched)

Output:

func (*Conn) Del 

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

Del executes the given delete request

func (*Conn) DigestMD5Bind 

func (l *Conn) DigestMD5Bind(digestMD5BindRequest *DigestMD5BindRequest) (*DigestMD5BindResult, error)

DigestMD5Bind performs the digest-md5 bind operation defined in the given request

func (*Conn) ExternalBind 

func (l *Conn) ExternalBind() error

ExternalBind performs SASL/EXTERNAL authentication.

Use ldap.DialURL("ldapi://") to connect to the Unix socket before ExternalBind.

See https://tools.ietf.org/html/rfc4422#appendix-A

Example

This example demonstrates how to use EXTERNAL SASL with TLS client certificates. 

var ldapCert = "/path/to/cert.pem"
var ldapKey = "/path/to/key.pem"
var ldapCAchain = "/path/to/ca_chain.pem"

// Load client cert and key
cert, err := tls.LoadX509KeyPair(ldapCert, ldapKey)
if err != nil {
	log.Fatal(err)
}

// Load CA chain
caCert, err := ioutil.ReadFile(ldapCAchain)
if err != nil {
	log.Fatal(err)
}
caCertPool := x509.NewCertPool()
caCertPool.AppendCertsFromPEM(caCert)

// Setup TLS with ldap client cert
tlsConfig := &tls.Config{
	Certificates:       []tls.Certificate{cert},
	RootCAs:            caCertPool,
	InsecureSkipVerify: true,
}

// connect to ldap server
l, err := DialURL("ldap://ldap.example.com:389")
if err != nil {
	log.Fatal(err)
}
defer l.Close()

// reconnect using tls
err = l.StartTLS(tlsConfig)
if err != nil {
	log.Fatal(err)
}

// sasl external bind
err = l.ExternalBind()
if err != nil {
	log.Fatal(err)
}

// Conduct ldap queries

Output:

func (*Conn) IsClosing 

func (l *Conn) IsClosing() bool

IsClosing returns whether or not we're currently closing.

func (*Conn) MD5Bind 

func (l *Conn) MD5Bind(host, username, password string) error

MD5Bind performs a digest-md5 bind with the given host, username and password.

func (*Conn) Modify 

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

Modify performs the ModifyRequest

Example 
l, err := DialURL("ldap://ldap.example.com:389")
if err != nil {
	log.Fatal(err)
}
defer l.Close()

// Add a description, and replace the mail attributes
modify := NewModifyRequest("cn=user,dc=example,dc=com", nil)
modify.Add("description", []string{"An example user"})
modify.Replace("mail", []string{"user@example.org"})

err = l.Modify(modify)
if err != nil {
	log.Fatal(err)
}

Output:

func (*Conn) ModifyDN 

func (l *Conn) ModifyDN(m *ModifyDNRequest) error

ModifyDN renames the given DN and optionally move to another base (when the "newSup" argument to NewModifyDNRequest() is not "").

Example (MoveOnly)

This example shows how to move an entry to a new base without renaming the RDN 

conn, err := DialURL("ldap://ldap.example.org:389")
if err != nil {
	log.Fatalf("Failed to connect: %s\n", err)
}
defer conn.Close()

_, err = conn.SimpleBind(&SimpleBindRequest{
	Username: "uid=someone,ou=people,dc=example,dc=org",
	Password: "MySecretPass",
})
if err != nil {
	log.Fatalf("Failed to bind: %s\n", err)
}
// move to ou=users,dc=example,dc=org -> uid=user,ou=users,dc=example,dc=org
req := NewModifyDNRequest("uid=user,ou=people,dc=example,dc=org", "uid=user", true, "ou=users,dc=example,dc=org")
if err = conn.ModifyDN(req); err != nil {
	log.Fatalf("Failed to call ModifyDN(): %s\n", err)
}

Output:
Example (RenameAndMove)

This example shows how to rename an entry and moving it to a new base 

conn, err := DialURL("ldap://ldap.example.org:389")
if err != nil {
	log.Fatalf("Failed to connect: %s\n", err)
}
defer conn.Close()

_, err = conn.SimpleBind(&SimpleBindRequest{
	Username: "uid=someone,ou=people,dc=example,dc=org",
	Password: "MySecretPass",
})
if err != nil {
	log.Fatalf("Failed to bind: %s\n", err)
}
// rename to uid=new,ou=people,dc=example,dc=org and move to ou=users,dc=example,dc=org ->
// uid=new,ou=users,dc=example,dc=org
req := NewModifyDNRequest("uid=user,ou=people,dc=example,dc=org", "uid=new", true, "ou=users,dc=example,dc=org")

if err = conn.ModifyDN(req); err != nil {
	log.Fatalf("Failed to call ModifyDN(): %s\n", err)
}

Output:
Example (RenameNoMove)

This example shows how to rename an entry without moving it 

conn, err := DialURL("ldap://ldap.example.org:389")
if err != nil {
	log.Fatalf("Failed to connect: %s\n", err)
}
defer conn.Close()

_, err = conn.SimpleBind(&SimpleBindRequest{
	Username: "uid=someone,ou=people,dc=example,dc=org",
	Password: "MySecretPass",
})
if err != nil {
	log.Fatalf("Failed to bind: %s\n", err)
}
// just rename to uid=new,ou=people,dc=example,dc=org:
req := NewModifyDNRequest("uid=user,ou=people,dc=example,dc=org", "uid=new", true, "")
if err = conn.ModifyDN(req); err != nil {
	log.Fatalf("Failed to call ModifyDN(): %s\n", err)
}

Output:

func (*Conn) ModifyWithResult 

func (l *Conn) ModifyWithResult(modifyRequest *ModifyRequest) (*ModifyResult, error)

ModifyWithResult performs the ModifyRequest and returns the result

func (*Conn) NTLMBind 

func (l *Conn) NTLMBind(domain, username, password string) error

NTLMBind performs an NTLMSSP Bind with the given domain, username and password

func (*Conn) NTLMBindWithHash 

func (l *Conn) NTLMBindWithHash(domain, username, hash string) error

NTLMBindWithHash performs an NTLM Bind with an NTLM hash instead of plaintext password (pass-the-hash)

func (*Conn) NTLMChallengeBind 

func (l *Conn) NTLMChallengeBind(ntlmBindRequest *NTLMBindRequest) (*NTLMBindResult, error)

NTLMChallengeBind performs the NTLMSSP bind operation defined in the given request

func (*Conn) NTLMUnauthenticatedBind 

func (l *Conn) NTLMUnauthenticatedBind(domain, username string) error

NTLMUnauthenticatedBind performs an bind with an empty password.

A username is required. The anonymous bind is not (yet) supported by the go-ntlmssp library (https://github.com/Azure/go-ntlmssp/blob/819c794454d067543bc61d29f61fef4b3c3df62c/authenticate_message.go#L87)

See https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-nlmp/b38c36ed-2804-4868-a9ff-8dd3182128e4 part 3.2.5.1.2

func (*Conn) PasswordModify 

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

PasswordModify performs the modification request

Example (Admin) 
l, err := DialURL("ldap://ldap.example.com:389")
if err != nil {
	log.Fatal(err)
}
defer l.Close()

err = l.Bind("cn=admin,dc=example,dc=com", "password")
if err != nil {
	log.Fatal(err)
}

passwordModifyRequest := NewPasswordModifyRequest("cn=user,dc=example,dc=com", "", "NewPassword")
_, err = l.PasswordModify(passwordModifyRequest)

if err != nil {
	log.Fatalf("Password could not be changed: %s", err.Error())
}

Output:
Example (GeneratedPassword) 
l, err := DialURL("ldap://ldap.example.com:389")
if err != nil {
	log.Fatal(err)
}
defer l.Close()

err = l.Bind("cn=user,dc=example,dc=com", "password")
if err != nil {
	log.Fatal(err)
}

passwordModifyRequest := NewPasswordModifyRequest("", "OldPassword", "")
passwordModifyResponse, err := l.PasswordModify(passwordModifyRequest)
if err != nil {
	log.Fatalf("Password could not be changed: %s", err.Error())
}

generatedPassword := passwordModifyResponse.GeneratedPassword
log.Printf("Generated password: %s\n", generatedPassword)

Output:
Example (SetNewPassword) 
l, err := DialURL("ldap://ldap.example.com:389")
if err != nil {
	log.Fatal(err)
}
defer l.Close()

err = l.Bind("cn=user,dc=example,dc=com", "password")
if err != nil {
	log.Fatal(err)
}

passwordModifyRequest := NewPasswordModifyRequest("", "OldPassword", "NewPassword")
_, err = l.PasswordModify(passwordModifyRequest)

if err != nil {
	log.Fatalf("Password could not be changed: %s", err.Error())
}

Output:

func (*Conn) Search 

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

Search performs the given search request

Example

This example demonstrates how to use the search interface 

l, err := DialURL("ldap://ldap.example.com:389")
if err != nil {
	log.Fatal(err)
}
defer l.Close()

searchRequest := NewSearchRequest(
	"dc=example,dc=com", // The base dn to search
	ScopeWholeSubtree, NeverDerefAliases, 0, 0, false,
	"(&(objectClass=organizationalPerson))", // The filter to apply
	[]string{"dn", "cn"},                    // A list attributes to retrieve
	nil,
)

sr, err := l.Search(searchRequest)
if err != nil {
	log.Fatal(err)
}

for _, entry := range sr.Entries {
	fmt.Printf("%s: %v\n", entry.DN, entry.GetAttributeValue("cn"))
}

Output:

func (*Conn) SearchWithPaging 

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

SearchWithPaging accepts a search request and desired page size in order to execute LDAP queries to fulfill the search request. All paged LDAP query responses will be buffered and the final result will be returned atomically. The following four cases are possible given the arguments:

  • given SearchRequest missing a control of type ControlTypePaging: we will add one with the desired paging size
  • given SearchRequest contains a control of type ControlTypePaging that isn't actually a ControlPaging: fail without issuing any queries
  • given SearchRequest contains a control of type ControlTypePaging with pagingSize equal to the size requested: no change to the search request
  • given SearchRequest contains a control of type ControlTypePaging with pagingSize not equal to the size requested: fail without issuing any queries

A requested pagingSize of 0 is interpreted as no limit by LDAP servers.

func (*Conn) SetTimeout 

func (l *Conn) SetTimeout(timeout time.Duration)

SetTimeout sets the time after a request is sent that a MessageTimeout triggers

func (*Conn) SimpleBind 

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

SimpleBind performs the simple bind operation defined in the given request

func (*Conn) Start 

func (l *Conn) Start()

Start initializes goroutines to read responses and process messages

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

Example

This example demonstrates how to start a TLS connection 

l, err := DialURL("ldap://ldap.example.com:389")
if err != nil {
	log.Fatal(err)
}
defer l.Close()

// Reconnect with TLS
err = l.StartTLS(&tls.Config{InsecureSkipVerify: true})
if err != nil {
	log.Fatal(err)
}

// Operations via l are now encrypted

Output:

func (*Conn) TLSConnectionState 

func (l *Conn) TLSConnectionState() (state tls.ConnectionState, ok bool)

TLSConnectionState returns the client's TLS connection state. The return values are their zero values if StartTLS did not succeed.

func (*Conn) UnauthenticatedBind 

func (l *Conn) UnauthenticatedBind(username string) error

UnauthenticatedBind performs an unauthenticated bind.

A username may be provided for trace (e.g. logging) purpose only, but it is normally not authenticated or otherwise validated by the LDAP server.

See https://tools.ietf.org/html/rfc4513#section-5.1.2 . See https://tools.ietf.org/html/rfc4513#section-6.3.1 .

func (*Conn) Unbind 

func (l *Conn) Unbind() error

Unbind will perform an unbind request. The Unbind operation should be thought of as the "quit" operation. See https://datatracker.ietf.org/doc/html/rfc4511#section-4.3

func (*Conn) WhoAmI 

func (l *Conn) WhoAmI(controls []Control) (*WhoAmIResult, error)

WhoAmI returns the authzId the server thinks we are, you may pass controls like a Proxied Authorization control

Example

ExampleConn_WhoAmI demonstrates how to run a whoami request according to https://tools.ietf.org/html/rfc4532 

conn, err := DialURL("ldap.example.org:389")
if err != nil {
	log.Fatalf("Failed to connect: %s\n", err)
}

_, err = conn.SimpleBind(&SimpleBindRequest{
	Username: "uid=someone,ou=people,dc=example,dc=org",
	Password: "MySecretPass",
})
if err != nil {
	log.Fatalf("Failed to bind: %s\n", err)
}

res, err := conn.WhoAmI(nil)
if err != nil {
	log.Fatalf("Failed to call WhoAmI(): %s\n", err)
}
fmt.Printf("I am: %s\n", res.AuthzID)

Output:

type Control 

type Control interface {
	// GetControlType returns the OID
	GetControlType() string
	// Encode returns the ber packet representation
	Encode() *ber.Packet
	// String returns a human-readable description
	String() string
}

Control defines an interface controls provide to encode and describe themselves

func DecodeControl 

func DecodeControl(packet *ber.Packet) (Control, error)

DecodeControl returns a control read from the given packet, or nil if no recognized control can be made

func FindControl 

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

FindControl returns the first control of the given type in the list, or nil

type ControlBeheraPasswordPolicy 

type ControlBeheraPasswordPolicy struct {
	// Expire contains the number of seconds before a password will expire
	Expire int64
	// Grace indicates the remaining number of times a user will be allowed to authenticate with an expired password
	Grace int64
	// Error indicates the error code
	Error int8
	// ErrorString is a human readable error
	ErrorString string
}

ControlBeheraPasswordPolicy implements the control described in https://tools.ietf.org/html/draft-behera-ldap-password-policy-10

func NewControlBeheraPasswordPolicy 

func NewControlBeheraPasswordPolicy() *ControlBeheraPasswordPolicy

NewControlBeheraPasswordPolicy returns a ControlBeheraPasswordPolicy

func (*ControlBeheraPasswordPolicy) Encode 

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

Encode returns the ber packet representation

func (*ControlBeheraPasswordPolicy) GetControlType 

func (c *ControlBeheraPasswordPolicy) GetControlType() string

GetControlType returns the OID

func (*ControlBeheraPasswordPolicy) String 

func (c *ControlBeheraPasswordPolicy) String() string

String returns a human-readable description

type ControlManageDsaIT 

type ControlManageDsaIT struct {
	// Criticality indicates if this control is required
	Criticality bool
}

ControlManageDsaIT implements the control described in https://tools.ietf.org/html/rfc3296

func NewControlManageDsaIT 

func NewControlManageDsaIT(Criticality bool) *ControlManageDsaIT

NewControlManageDsaIT returns a ControlManageDsaIT control

func (*ControlManageDsaIT) Encode 

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

Encode returns the ber packet representation

func (*ControlManageDsaIT) GetControlType 

func (c *ControlManageDsaIT) GetControlType() string

GetControlType returns the OID

func (*ControlManageDsaIT) String 

func (c *ControlManageDsaIT) String() string

String returns a human-readable description

type ControlMicrosoftNotification 

type ControlMicrosoftNotification struct{}

ControlMicrosoftNotification implements the control described in https://msdn.microsoft.com/en-us/library/aa366983(v=vs.85).aspx

func NewControlMicrosoftNotification 

func NewControlMicrosoftNotification() *ControlMicrosoftNotification

NewControlMicrosoftNotification returns a ControlMicrosoftNotification control

func (*ControlMicrosoftNotification) Encode 

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

Encode returns the ber packet representation

func (*ControlMicrosoftNotification) GetControlType 

func (c *ControlMicrosoftNotification) GetControlType() string

GetControlType returns the OID

func (*ControlMicrosoftNotification) String 

func (c *ControlMicrosoftNotification) String() string

String returns a human-readable description

type ControlMicrosoftServerLinkTTL 

type ControlMicrosoftServerLinkTTL struct{}

ControlMicrosoftServerLinkTTL implements the control described in https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-adts/f4f523a8-abc0-4b3a-a471-6b2fef135481?redirectedfrom=MSDN

func NewControlMicrosoftServerLinkTTL 

func NewControlMicrosoftServerLinkTTL() *ControlMicrosoftServerLinkTTL

NewControlMicrosoftServerLinkTTL returns a ControlMicrosoftServerLinkTTL control

func (*ControlMicrosoftServerLinkTTL) Encode 

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

Encode returns the ber packet representation

func (*ControlMicrosoftServerLinkTTL) GetControlType 

func (c *ControlMicrosoftServerLinkTTL) GetControlType() string

GetControlType returns the OID

func (*ControlMicrosoftServerLinkTTL) String 

func (c *ControlMicrosoftServerLinkTTL) String() string

String returns a human-readable description

type ControlMicrosoftShowDeleted 

type ControlMicrosoftShowDeleted struct{}

ControlMicrosoftShowDeleted implements the control described in https://msdn.microsoft.com/en-us/library/aa366989(v=vs.85).aspx

func NewControlMicrosoftShowDeleted 

func NewControlMicrosoftShowDeleted() *ControlMicrosoftShowDeleted

NewControlMicrosoftShowDeleted returns a ControlMicrosoftShowDeleted control

func (*ControlMicrosoftShowDeleted) Encode 

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

Encode returns the ber packet representation

func (*ControlMicrosoftShowDeleted) GetControlType 

func (c *ControlMicrosoftShowDeleted) GetControlType() string

GetControlType returns the OID

func (*ControlMicrosoftShowDeleted) String 

func (c *ControlMicrosoftShowDeleted) String() string

String returns a human-readable description

type ControlPaging 

type ControlPaging struct {
	// PagingSize indicates the page size
	PagingSize uint32
	// Cookie is an opaque value returned by the server to track a paging cursor
	Cookie []byte
}

ControlPaging implements the paging control described in https://www.ietf.org/rfc/rfc2696.txt

Example (ManualPaging)

This example demonstrates how to use ControlPaging to manually execute a paginated search request instead of using SearchWithPaging. 

conn, err := DialURL("ldap://ldap.example.com:389")
if err != nil {
	log.Fatal(err)
}
defer conn.Close()

var pageSize uint32 = 32
searchBase := "dc=example,dc=com"
filter := "(objectClass=group)"
pagingControl := NewControlPaging(pageSize)
attributes := []string{}
controls := []Control{pagingControl}

for {
	request := NewSearchRequest(searchBase, ScopeWholeSubtree, DerefAlways, 0, 0, false, filter, attributes, controls)
	response, err := conn.Search(request)
	if err != nil {
		log.Fatalf("Failed to execute search request: %s", err.Error())
	}

	// [do something with the response entries]

	// In order to prepare the next request, we check if the response
	// contains another ControlPaging object and a not-empty cookie and
	// copy that cookie into our pagingControl object:
	updatedControl := FindControl(response.Controls, ControlTypePaging)
	if ctrl, ok := updatedControl.(*ControlPaging); ctrl != nil && ok && len(ctrl.Cookie) != 0 {
		pagingControl.SetCookie(ctrl.Cookie)
		continue
	}
	// If no new paging information is available or the cookie is empty, we
	// are done with the pagination.
	break
}

Output:

func NewControlPaging 

func NewControlPaging(pagingSize uint32) *ControlPaging

NewControlPaging returns a paging control

func (*ControlPaging) Encode 

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

Encode returns the ber packet representation

func (*ControlPaging) GetControlType 

func (c *ControlPaging) GetControlType() string

GetControlType returns the OID

func (*ControlPaging) SetCookie 

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

SetCookie stores the given cookie in the paging control

func (*ControlPaging) String 

func (c *ControlPaging) String() string

String returns a human-readable description

type ControlString 

type ControlString struct {
	ControlType  string
	Criticality  bool
	ControlValue string
}

ControlString implements the Control interface for simple controls

func NewControlString 

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

NewControlString returns a generic control

func (*ControlString) Encode 

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

Encode returns the ber packet representation

func (*ControlString) GetControlType 

func (c *ControlString) GetControlType() string

GetControlType returns the OID

func (*ControlString) String 

func (c *ControlString) String() string

String returns a human-readable description

type ControlSubtreeDelete 

type ControlSubtreeDelete struct{}

func NewControlSubtreeDelete 

func NewControlSubtreeDelete() *ControlSubtreeDelete

func (*ControlSubtreeDelete) Encode 

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

func (*ControlSubtreeDelete) GetControlType 

func (c *ControlSubtreeDelete) GetControlType() string

func (*ControlSubtreeDelete) String 

func (c *ControlSubtreeDelete) String() string

type ControlVChuPasswordMustChange 

type ControlVChuPasswordMustChange struct {
	// MustChange indicates if the password is required to be changed
	MustChange bool
}

ControlVChuPasswordMustChange implements the control described in https://tools.ietf.org/html/draft-vchu-ldap-pwd-policy-00

func (*ControlVChuPasswordMustChange) Encode 

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

Encode returns the ber packet representation

func (*ControlVChuPasswordMustChange) GetControlType 

func (c *ControlVChuPasswordMustChange) GetControlType() string

GetControlType returns the OID

func (*ControlVChuPasswordMustChange) String 

func (c *ControlVChuPasswordMustChange) String() string

String returns a human-readable description

type ControlVChuPasswordWarning 

type ControlVChuPasswordWarning struct {
	// Expire indicates the time in seconds until the password expires
	Expire int64
}

ControlVChuPasswordWarning implements the control described in https://tools.ietf.org/html/draft-vchu-ldap-pwd-policy-00

func (*ControlVChuPasswordWarning) Encode 

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

Encode returns the ber packet representation

func (*ControlVChuPasswordWarning) GetControlType 

func (c *ControlVChuPasswordWarning) GetControlType() string

GetControlType returns the OID

func (*ControlVChuPasswordWarning) String 

func (c *ControlVChuPasswordWarning) String() string

String returns a human-readable description

type DN 

type DN struct {
	RDNs []*RelativeDN
}

DN represents a distinguishedName from https://tools.ietf.org/html/rfc4514

func ParseDN 

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

ParseDN returns a distinguishedName or an error. The function respects https://tools.ietf.org/html/rfc4514

func (*DN) AncestorOf 

func (d *DN) AncestorOf(other *DN) bool

AncestorOf returns true if the other DN consists of at least one RDN followed by all the RDNs of the current DN. "ou=widgets,o=acme.com" is an ancestor of "ou=sprockets,ou=widgets,o=acme.com" "ou=widgets,o=acme.com" is not an ancestor of "ou=sprockets,ou=widgets,o=foo.com" "ou=widgets,o=acme.com" is not an ancestor of "ou=widgets,o=acme.com"

func (*DN) AncestorOfFold 

func (d *DN) AncestorOfFold(other *DN) bool

AncestorOfFold returns true if the other DN consists of at least one RDN followed by all the RDNs of the current DN. Case of the attribute type and value is not significant

func (*DN) Equal 

func (d *DN) Equal(other *DN) bool

Equal returns true if the DNs are equal as defined by rfc4517 4.2.15 (distinguishedNameMatch). Returns true if they have the same number of relative distinguished names and corresponding relative distinguished names (by position) are the same.

func (*DN) EqualFold 

func (d *DN) EqualFold(other *DN) bool

Equal returns true if the DNs are equal as defined by rfc4517 4.2.15 (distinguishedNameMatch). Returns true if they have the same number of relative distinguished names and corresponding relative distinguished names (by position) are the same. Case of the attribute type and value is not significant

func (*DN) String 

func (d *DN) String() string

String returns a normalized string representation of this DN which is the join of all relative DNs with a ",".

type DelRequest 

type DelRequest struct {
	// DN is the name of the directory entry to delete
	DN string
	// Controls hold optional controls to send with the request
	Controls []Control
}

DelRequest implements an LDAP deletion request

func NewDelRequest 

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

NewDelRequest creates a delete request for the given DN and controls

type DialContext 

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

DialContext contains necessary parameters to dial the given ldap URL.

type DialOpt 

type DialOpt func(*DialContext)

DialOpt configures DialContext.

func DialWithDialer 

func DialWithDialer(d *net.Dialer) DialOpt

DialWithDialer updates net.Dialer in DialContext.

func DialWithTLSConfig 

func DialWithTLSConfig(tc *tls.Config) DialOpt

DialWithTLSConfig updates tls.Config in DialContext.

func DialWithTLSDialer 

func DialWithTLSDialer(tlsConfig *tls.Config, dialer *net.Dialer) DialOpt

DialWithTLSDialer is a wrapper for DialWithTLSConfig with the option to specify a net.Dialer to for example define a timeout or a custom resolver.

type DigestMD5BindRequest 

type DigestMD5BindRequest struct {
	Host string
	// Username is the name of the Directory object that the client wishes to bind as
	Username string
	// Password is the credentials to bind with
	Password string
	// Controls are optional controls to send with the bind request
	Controls []Control
}

DigestMD5BindRequest represents a digest-md5 bind operation

type DigestMD5BindResult 

type DigestMD5BindResult struct {
	Controls []Control
}

DigestMD5BindResult contains the response from the server

type Entry 

type Entry struct {
	// DN is the distinguished name of the entry
	DN string
	// Attributes are the returned attributes for the entry
	Attributes []*EntryAttribute
}

Entry represents a single search result entry

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

GetAttributeValue returns the first value for the named attribute, or ""

func (*Entry) GetAttributeValues 

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

GetAttributeValues returns the values for the named attribute, or an empty list

func (*Entry) GetEqualFoldAttributeValue 

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

GetEqualFoldAttributeValue returns the first value for the named attribute, or "". Attribute comparison is done with strings.EqualFold.

func (*Entry) GetEqualFoldAttributeValues 

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

GetEqualFoldAttributeValues returns the values for the named attribute, or an empty list. Attribute matching is done with strings.EqualFold.

func (*Entry) GetEqualFoldRawAttributeValue 

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

GetEqualFoldRawAttributeValue returns the first value for the named attribute, or an empty slice

func (*Entry) GetEqualFoldRawAttributeValues 

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

GetEqualFoldRawAttributeValues returns the byte values for the named attribute, or an empty list

func (*Entry) GetRawAttributeValue 

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

GetRawAttributeValue returns the first value for the named attribute, or an empty slice

func (*Entry) GetRawAttributeValues 

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

GetRawAttributeValues returns the byte values for the named attribute, or an empty list

func (*Entry) PrettyPrint 

func (e *Entry) PrettyPrint(indent int)

PrettyPrint outputs a human-readable description indenting

func (*Entry) Print 

func (e *Entry) Print()

Print outputs a human-readable description

func (*Entry) Unmarshal 

func (e *Entry) Unmarshal(i interface{}) (err error)

Unmarshal parses the Entry in the value pointed to by i

Currently, this methods only supports struct fields of type string, []string, int, int64 or []byte. Other field types will not be regarded. If the field type is a string or int but multiple attribute values are returned, the first value will be used to fill the field.

Example: 

type UserEntry struct {
	// Fields with the tag key `dn` are automatically filled with the
	// objects distinguishedName. This can be used multiple times.
	DN string `ldap:"dn"`

	// This field will be filled with the attribute value for
	// userPrincipalName. An attribute can be read into a struct field
	// multiple times. Missing attributes will not result in an error.
	UserPrincipalName string `ldap:"userPrincipalName"`

	// memberOf may have multiple values. If you don't
	// know the amount of attribute values at runtime, use a string array.
	MemberOf []string `ldap:"memberOf"`

	// ID is an integer value, it will fail unmarshaling when the given
	// attribute value cannot be parsed into an integer.
	ID int `ldap:"id"`

	// LongID is similar to ID but uses an int64 instead.
	LongID int64 `ldap:"longId"`

	// Data is similar to MemberOf a slice containing all attribute
	// values.
	Data []byte `ldap:"data"`

	// This won't work, as the field is not of type string. For this
	// to work, you'll have to temporarily store the result in string
	// (or string array) and convert it to the desired type afterwards.
	UserAccountControl uint32 `ldap:"userPrincipalName"`
}
user := UserEntry{}
if err := result.Unmarshal(&user); err != nil {
	// ...
}

type EntryAttribute 

type EntryAttribute struct {
	// Name is the name of the attribute
	Name string
	// Values contain the string values of the attribute
	Values []string
	// ByteValues contain the raw values of the attribute
	ByteValues [][]byte
}

EntryAttribute holds a single attribute

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)

PrettyPrint outputs a human-readable description with indenting

func (*EntryAttribute) Print 

func (e *EntryAttribute) Print()

Print outputs a human-readable description

type Error 

type Error struct {
	// Err is the underlying error
	Err error
	// ResultCode is the LDAP error code
	ResultCode uint16
	// MatchedDN is the matchedDN returned if any
	MatchedDN string
	// Packet is the returned packet if any
	Packet *ber.Packet
}

Error holds LDAP error information

func (*Error) Error 

func (e *Error) Error() string

type ModifyDNRequest 

type ModifyDNRequest struct {
	DN           string
	NewRDN       string
	DeleteOldRDN bool
	NewSuperior  string
	// Controls hold optional controls to send with the request
	Controls []Control
}

ModifyDNRequest holds the request to modify a DN

func NewModifyDNRequest 

func NewModifyDNRequest(dn string, rdn string, delOld bool, newSup string) *ModifyDNRequest

NewModifyDNRequest creates a new request which can be passed to ModifyDN().

To move an object in the tree, set the "newSup" to the new parent entry DN. Use an empty string for just changing the object's RDN.

For moving the object without renaming, the "rdn" must be the first RDN of the given DN.

A call like 

mdnReq := NewModifyDNRequest("uid=someone,dc=example,dc=org", "uid=newname", true, "")

will setup the request to just rename uid=someone,dc=example,dc=org to uid=newname,dc=example,dc=org.

func NewModifyDNWithControlsRequest 

func NewModifyDNWithControlsRequest(dn string, rdn string, delOld bool,
	newSup string, controls []Control) *ModifyDNRequest

NewModifyDNWithControlsRequest creates a new request which can be passed to ModifyDN() and also allows setting LDAP request controls.

Refer NewModifyDNRequest for other parameters

type ModifyRequest 

type ModifyRequest struct {
	// DN is the distinguishedName of the directory entry to modify
	DN string
	// Changes contain the attributes to modify
	Changes []Change
	// Controls hold optional controls to send with the request
	Controls []Control
}

ModifyRequest as defined in https://tools.ietf.org/html/rfc4511

func NewModifyRequest 

func NewModifyRequest(dn string, controls []Control) *ModifyRequest

NewModifyRequest creates a modify request for the given DN

func (*ModifyRequest) Add 

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

Add appends the given attribute to the list of changes to be made

func (*ModifyRequest) Delete 

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

Delete appends the given attribute to the list of changes to be made

func (*ModifyRequest) Increment 

func (req *ModifyRequest) Increment(attrType string, attrVal string)

Increment appends the given attribute to the list of changes to be made

func (*ModifyRequest) Replace 

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

Replace appends the given attribute to the list of changes to be made

type ModifyResult 

type ModifyResult struct {
	// Controls are the returned controls
	Controls []Control
	// Referral is the returned referral
	Referral string
}

ModifyResult holds the server's response to a modify request

type NTLMBindRequest 

type NTLMBindRequest struct {
	// Domain is the AD Domain to authenticate too. If not specified, it will be grabbed from the NTLMSSP Challenge
	Domain string
	// Username is the name of the Directory object that the client wishes to bind as
	Username string
	// Password is the credentials to bind with
	Password string
	// AllowEmptyPassword sets whether the client allows binding with an empty password
	// (normally used for unauthenticated bind).
	AllowEmptyPassword bool
	// Hash is the hex NTLM hash to bind with. Password or hash must be provided
	Hash string
	// Controls are optional controls to send with the bind request
	Controls []Control
}

NTLMBindRequest represents an NTLMSSP bind operation

type NTLMBindResult 

type NTLMBindResult struct {
	Controls []Control
}

NTLMBindResult contains the response from the server

type PacketResponse 

type PacketResponse struct {
	// Packet is the packet read from the server
	Packet *ber.Packet
	// Error is an error encountered while reading
	Error error
}

PacketResponse contains the packet or error encountered reading a response

func (*PacketResponse) ReadPacket 

func (pr *PacketResponse) ReadPacket() (*ber.Packet, error)

ReadPacket returns the packet or an error

type PartialAttribute 

type PartialAttribute struct {
	// Type is the type of the partial attribute
	Type string
	// Vals are the values of the partial attribute
	Vals []string
}

PartialAttribute for a ModifyRequest as defined in https://tools.ietf.org/html/rfc4511

type PasswordModifyRequest 

type PasswordModifyRequest struct {
	// UserIdentity is an optional string representation of the user associated with the request.
	// This string may or may not be an LDAPDN [RFC2253].
	// If no UserIdentity field is present, the request acts up upon the password of the user currently associated with the LDAP session
	UserIdentity string
	// OldPassword, if present, contains the user's current password
	OldPassword string
	// NewPassword, if present, contains the desired password for this user
	NewPassword string
}

PasswordModifyRequest implements the Password Modify Extended Operation as defined in https://www.ietf.org/rfc/rfc3062.txt

func NewPasswordModifyRequest 

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

NewPasswordModifyRequest creates a new PasswordModifyRequest

According to the RFC 3602 (https://tools.ietf.org/html/rfc3062): 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 holds a password generated by the server, if present
	GeneratedPassword string
	// Referral are the returned referral
	Referral string
}

PasswordModifyResult holds the server response to a PasswordModifyRequest

type RelativeDN 

type RelativeDN struct {
	Attributes []*AttributeTypeAndValue
}

RelativeDN represents a relativeDistinguishedName from https://tools.ietf.org/html/rfc4514

func (*RelativeDN) Equal 

func (r *RelativeDN) Equal(other *RelativeDN) bool

Equal returns true if the RelativeDNs are equal as defined by rfc4517 4.2.15 (distinguishedNameMatch). Relative distinguished names are the same if and only if they have the same number of AttributeTypeAndValues and each attribute of the first RDN is the same as the attribute of the second RDN with the same attribute type. The order of attributes is not significant. Case of attribute types is not significant.

func (*RelativeDN) EqualFold 

func (r *RelativeDN) EqualFold(other *RelativeDN) bool

Equal returns true if the RelativeDNs are equal as defined by rfc4517 4.2.15 (distinguishedNameMatch). Case of the attribute type is not significant

func (*RelativeDN) String 

func (r *RelativeDN) String() string

String returns a normalized string representation of this relative DN which is the a join of all attributes (sorted in increasing order) with a "+".

type SearchRequest 

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

SearchRequest represents a search request to send to the server

func NewSearchRequest 

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

NewSearchRequest creates a new search request

type SearchResult 

type SearchResult struct {
	// Entries are the returned entries
	Entries []*Entry
	// Referrals are the returned referrals
	Referrals []string
	// Controls are the returned controls
	Controls []Control
}

SearchResult holds the server's response to a search request

func (*SearchResult) PrettyPrint 

func (s *SearchResult) PrettyPrint(indent int)

PrettyPrint outputs a human-readable description with indenting

func (*SearchResult) Print 

func (s *SearchResult) Print()

Print outputs a human-readable description

type SimpleBindRequest 

type SimpleBindRequest struct {
	// Username is the name of the Directory object that the client wishes to bind as
	Username string
	// Password is the credentials to bind with
	Password string
	// Controls are optional controls to send with the bind request
	Controls []Control
	// AllowEmptyPassword sets whether the client allows binding with an empty password
	// (normally used for unauthenticated bind).
	AllowEmptyPassword bool
}

SimpleBindRequest represents a username/password bind operation

func NewSimpleBindRequest 

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

NewSimpleBindRequest returns a bind request

type SimpleBindResult 

type SimpleBindResult struct {
	Controls []Control
}

SimpleBindResult contains the response from the server

type WhoAmIResult 

type WhoAmIResult struct {
	AuthzID string
}

WhoAmIResult is returned by the WhoAmI() call

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