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- package ldap
-
- import (
- "log"
-
- ber "github.com/go-asn1-ber/asn1-ber"
- )
-
- // Change operation choices
- const (
- AddAttribute = 0
- DeleteAttribute = 1
- ReplaceAttribute = 2
- IncrementAttribute = 3 // (https://tools.ietf.org/html/rfc4525)
- )
-
- // PartialAttribute for a ModifyRequest as defined in https://tools.ietf.org/html/rfc4511
- type PartialAttribute struct {
- // Type is the type of the partial attribute
- Type string
- // Vals are the values of the partial attribute
- Vals []string
- }
-
- func (p *PartialAttribute) encode() *ber.Packet {
- seq := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "PartialAttribute")
- seq.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, p.Type, "Type"))
- set := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSet, nil, "AttributeValue")
- for _, value := range p.Vals {
- set.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, value, "Vals"))
- }
- seq.AppendChild(set)
- return seq
- }
-
- // Change for a ModifyRequest as defined in https://tools.ietf.org/html/rfc4511
- type Change struct {
- // Operation is the type of change to be made
- Operation uint
- // Modification is the attribute to be modified
- Modification PartialAttribute
- }
-
- func (c *Change) encode() *ber.Packet {
- change := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Change")
- change.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagEnumerated, uint64(c.Operation), "Operation"))
- change.AppendChild(c.Modification.encode())
- return change
- }
-
- // ModifyRequest as defined in https://tools.ietf.org/html/rfc4511
- 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
- }
-
- // Add appends the given attribute to the list of changes to be made
- func (req *ModifyRequest) Add(attrType string, attrVals []string) {
- req.appendChange(AddAttribute, attrType, attrVals)
- }
-
- // Delete appends the given attribute to the list of changes to be made
- func (req *ModifyRequest) Delete(attrType string, attrVals []string) {
- req.appendChange(DeleteAttribute, attrType, attrVals)
- }
-
- // Replace appends the given attribute to the list of changes to be made
- func (req *ModifyRequest) Replace(attrType string, attrVals []string) {
- req.appendChange(ReplaceAttribute, attrType, attrVals)
- }
-
- // Increment appends the given attribute to the list of changes to be made
- func (req *ModifyRequest) Increment(attrType string, attrVal string) {
- req.appendChange(IncrementAttribute, attrType, []string{attrVal})
- }
-
- func (req *ModifyRequest) appendChange(operation uint, attrType string, attrVals []string) {
- req.Changes = append(req.Changes, Change{operation, PartialAttribute{Type: attrType, Vals: attrVals}})
- }
-
- func (req *ModifyRequest) appendTo(envelope *ber.Packet) error {
- pkt := ber.Encode(ber.ClassApplication, ber.TypeConstructed, ApplicationModifyRequest, nil, "Modify Request")
- pkt.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, req.DN, "DN"))
- changes := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Changes")
- for _, change := range req.Changes {
- changes.AppendChild(change.encode())
- }
- pkt.AppendChild(changes)
-
- envelope.AppendChild(pkt)
- if len(req.Controls) > 0 {
- envelope.AppendChild(encodeControls(req.Controls))
- }
-
- return nil
- }
-
- // NewModifyRequest creates a modify request for the given DN
- func NewModifyRequest(dn string, controls []Control) *ModifyRequest {
- return &ModifyRequest{
- DN: dn,
- Controls: controls,
- }
- }
-
- // Modify performs the ModifyRequest
- func (l *Conn) Modify(modifyRequest *ModifyRequest) error {
- msgCtx, err := l.doRequest(modifyRequest)
- if err != nil {
- return err
- }
- defer l.finishMessage(msgCtx)
-
- packet, err := l.readPacket(msgCtx)
- if err != nil {
- return err
- }
-
- if packet.Children[1].Tag == ApplicationModifyResponse {
- err := GetLDAPError(packet)
- if err != nil {
- return err
- }
- } else {
- log.Printf("Unexpected Response: %d", packet.Children[1].Tag)
- }
- return nil
- }
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