mirror of
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174 lines
5.2 KiB
Go
Vendored
174 lines
5.2 KiB
Go
Vendored
// File contains Modify functionality
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//
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// https://tools.ietf.org/html/rfc4511
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//
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// ModifyRequest ::= [APPLICATION 6] SEQUENCE {
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// object LDAPDN,
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// changes SEQUENCE OF change SEQUENCE {
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// operation ENUMERATED {
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// add (0),
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// delete (1),
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// replace (2),
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// ... },
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// modification PartialAttribute } }
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//
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// PartialAttribute ::= SEQUENCE {
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// type AttributeDescription,
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// vals SET OF value AttributeValue }
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//
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// AttributeDescription ::= LDAPString
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// -- Constrained to <attributedescription>
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// -- [RFC4512]
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//
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// AttributeValue ::= OCTET STRING
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//
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package ldap
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import (
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"errors"
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"log"
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"gopkg.in/asn1-ber.v1"
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)
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// Change operation choices
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const (
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AddAttribute = 0
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DeleteAttribute = 1
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ReplaceAttribute = 2
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)
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// PartialAttribute for a ModifyRequest as defined in https://tools.ietf.org/html/rfc4511
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type PartialAttribute struct {
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// Type is the type of the partial attribute
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Type string
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// Vals are the values of the partial attribute
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Vals []string
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}
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func (p *PartialAttribute) encode() *ber.Packet {
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seq := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "PartialAttribute")
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seq.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, p.Type, "Type"))
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set := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSet, nil, "AttributeValue")
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for _, value := range p.Vals {
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set.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, value, "Vals"))
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}
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seq.AppendChild(set)
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return seq
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}
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// Change for a ModifyRequest as defined in https://tools.ietf.org/html/rfc4511
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type Change struct {
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// Operation is the type of change to be made
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Operation uint
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// Modification is the attribute to be modified
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Modification PartialAttribute
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}
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func (c *Change) encode() *ber.Packet {
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change := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Change")
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change.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagEnumerated, uint64(c.Operation), "Operation"))
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change.AppendChild(c.Modification.encode())
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return change
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}
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// ModifyRequest as defined in https://tools.ietf.org/html/rfc4511
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type ModifyRequest struct {
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// DN is the distinguishedName of the directory entry to modify
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DN string
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// Changes contain the attributes to modify
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Changes []Change
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// Controls hold optional controls to send with the request
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Controls []Control
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}
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// Add appends the given attribute to the list of changes to be made
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func (m *ModifyRequest) Add(attrType string, attrVals []string) {
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m.appendChange(AddAttribute, attrType, attrVals)
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}
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// Delete appends the given attribute to the list of changes to be made
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func (m *ModifyRequest) Delete(attrType string, attrVals []string) {
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m.appendChange(DeleteAttribute, attrType, attrVals)
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}
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// Replace appends the given attribute to the list of changes to be made
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func (m *ModifyRequest) Replace(attrType string, attrVals []string) {
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m.appendChange(ReplaceAttribute, attrType, attrVals)
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}
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func (m *ModifyRequest) appendChange(operation uint, attrType string, attrVals []string) {
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m.Changes = append(m.Changes, Change{operation, PartialAttribute{Type: attrType, Vals: attrVals}})
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}
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func (m ModifyRequest) encode() *ber.Packet {
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request := ber.Encode(ber.ClassApplication, ber.TypeConstructed, ApplicationModifyRequest, nil, "Modify Request")
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request.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, m.DN, "DN"))
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changes := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Changes")
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for _, change := range m.Changes {
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changes.AppendChild(change.encode())
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}
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request.AppendChild(changes)
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return request
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}
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// NewModifyRequest creates a modify request for the given DN
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func NewModifyRequest(
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dn string,
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controls []Control,
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) *ModifyRequest {
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return &ModifyRequest{
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DN: dn,
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Controls: controls,
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}
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}
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// Modify performs the ModifyRequest
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func (l *Conn) Modify(modifyRequest *ModifyRequest) error {
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packet := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "LDAP Request")
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packet.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagInteger, l.nextMessageID(), "MessageID"))
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packet.AppendChild(modifyRequest.encode())
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if len(modifyRequest.Controls) > 0 {
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packet.AppendChild(encodeControls(modifyRequest.Controls))
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}
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l.Debug.PrintPacket(packet)
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msgCtx, err := l.sendMessage(packet)
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if err != nil {
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return err
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}
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defer l.finishMessage(msgCtx)
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l.Debug.Printf("%d: waiting for response", msgCtx.id)
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packetResponse, ok := <-msgCtx.responses
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if !ok {
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return NewError(ErrorNetwork, errors.New("ldap: response channel closed"))
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}
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packet, err = packetResponse.ReadPacket()
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l.Debug.Printf("%d: got response %p", msgCtx.id, packet)
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if err != nil {
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return err
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}
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if l.Debug {
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if err := addLDAPDescriptions(packet); err != nil {
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return err
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}
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ber.PrintPacket(packet)
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}
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if packet.Children[1].Tag == ApplicationModifyResponse {
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err := GetLDAPError(packet)
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if err != nil {
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return err
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}
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} else {
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log.Printf("Unexpected Response: %d", packet.Children[1].Tag)
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}
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l.Debug.Printf("%d: returning", msgCtx.id)
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return nil
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}
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