forgejo/vendor/github.com/go-ldap/ldap/v3/compare.go

62 lines
1.7 KiB
Go
Raw Normal View History

package ldap
import (
"fmt"
ber "github.com/go-asn1-ber/asn1-ber"
)
// CompareRequest represents an LDAP CompareRequest operation.
type CompareRequest struct {
DN string
Attribute string
Value string
}
func (req *CompareRequest) appendTo(envelope *ber.Packet) error {
pkt := ber.Encode(ber.ClassApplication, ber.TypeConstructed, ApplicationCompareRequest, nil, "Compare Request")
pkt.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, req.DN, "DN"))
ava := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "AttributeValueAssertion")
ava.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, req.Attribute, "AttributeDesc"))
ava.AppendChild(ber.Encode(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, req.Value, "AssertionValue"))
pkt.AppendChild(ava)
envelope.AppendChild(pkt)
return nil
}
// 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 (l *Conn) Compare(dn, attribute, value string) (bool, error) {
msgCtx, err := l.doRequest(&CompareRequest{
DN: dn,
Attribute: attribute,
Value: value})
if err != nil {
return false, err
}
defer l.finishMessage(msgCtx)
packet, err := l.readPacket(msgCtx)
if err != nil {
return false, err
}
if packet.Children[1].Tag == ApplicationCompareResponse {
err := GetLDAPError(packet)
switch {
case IsErrorWithCode(err, LDAPResultCompareTrue):
return true, nil
case IsErrorWithCode(err, LDAPResultCompareFalse):
return false, nil
default:
return false, err
}
}
return false, fmt.Errorf("unexpected Response: %d", packet.Children[1].Tag)
}