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authentik/outpost/pkg/ldap/instance_search.go

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package ldap
import (
"errors"
"fmt"
"net"
"strconv"
"strings"
"github.com/nmcclain/ldap"
"goauthentik.io/outpost/pkg/client/core"
)
func (pi *ProviderInstance) Search(bindDN string, searchReq ldap.SearchRequest, conn net.Conn) (ldap.ServerSearchResult, error) {
bindDN = strings.ToLower(bindDN)
baseDN := strings.ToLower("," + pi.BaseDN)
entries := []*ldap.Entry{}
filterEntity, err := ldap.GetFilterObjectClass(searchReq.Filter)
if err != nil {
return ldap.ServerSearchResult{ResultCode: ldap.LDAPResultOperationsError}, fmt.Errorf("Search Error: error parsing filter: %s", searchReq.Filter)
}
if len(bindDN) < 1 {
return ldap.ServerSearchResult{ResultCode: ldap.LDAPResultInsufficientAccessRights}, fmt.Errorf("Search Error: Anonymous BindDN not allowed %s", bindDN)
}
if !strings.HasSuffix(bindDN, baseDN) {
return ldap.ServerSearchResult{ResultCode: ldap.LDAPResultInsufficientAccessRights}, fmt.Errorf("Search Error: BindDN %s not in our BaseDN %s", bindDN, pi.BaseDN)
}
pi.boundUsersMutex.RLock()
defer pi.boundUsersMutex.RUnlock()
flags, ok := pi.boundUsers[bindDN]
if !ok {
return ldap.ServerSearchResult{ResultCode: ldap.LDAPResultInsufficientAccessRights}, errors.New("Access denied")
}
if !flags.CanSearch {
return ldap.ServerSearchResult{ResultCode: ldap.LDAPResultInsufficientAccessRights}, errors.New("Access denied")
}
switch filterEntity {
default:
return ldap.ServerSearchResult{ResultCode: ldap.LDAPResultOperationsError}, fmt.Errorf("Search Error: unhandled filter type: %s [%s]", filterEntity, searchReq.Filter)
case GroupObjectClass:
groups, err := pi.s.ac.Client.Core.CoreGroupsList(core.NewCoreGroupsListParams(), pi.s.ac.Auth)
if err != nil {
return ldap.ServerSearchResult{ResultCode: ldap.LDAPResultOperationsError}, fmt.Errorf("API Error: %s", err)
}
pi.log.WithField("count", len(groups.Payload.Results)).Trace("Got results from API")
for _, g := range groups.Payload.Results {
attrs := []*ldap.EntryAttribute{
{
Name: "cn",
Values: []string{*g.Name},
},
{
Name: "uid",
Values: []string{string(g.Pk)},
},
{
Name: "objectClass",
Values: []string{GroupObjectClass, "goauthentik.io/ldap/group"},
},
}
attrs = append(attrs, AKAttrsToLDAP(g.Attributes)...)
dn := pi.GetGroupDN(g)
entries = append(entries, &ldap.Entry{DN: dn, Attributes: attrs})
}
case UserObjectClass, "":
users, err := pi.s.ac.Client.Core.CoreUsersList(core.NewCoreUsersListParams(), pi.s.ac.Auth)
if err != nil {
return ldap.ServerSearchResult{ResultCode: ldap.LDAPResultOperationsError}, fmt.Errorf("API Error: %s", err)
}
for _, u := range users.Payload.Results {
attrs := []*ldap.EntryAttribute{
{
Name: "cn",
Values: []string{*u.Username},
},
{
Name: "uid",
Values: []string{strconv.Itoa(int(u.Pk))},
},
{
Name: "name",
Values: []string{*u.Name},
},
{
Name: "displayName",
Values: []string{*u.Name},
},
{
Name: "mail",
Values: []string{u.Email.String()},
},
{
Name: "objectClass",
Values: []string{UserObjectClass, "organizationalPerson", "goauthentik.io/ldap/user"},
},
}
if u.IsActive {
attrs = append(attrs, &ldap.EntryAttribute{Name: "accountStatus", Values: []string{"inactive"}})
} else {
attrs = append(attrs, &ldap.EntryAttribute{Name: "accountStatus", Values: []string{"active"}})
}
if *u.IsSuperuser {
attrs = append(attrs, &ldap.EntryAttribute{Name: "superuser", Values: []string{"inactive"}})
} else {
attrs = append(attrs, &ldap.EntryAttribute{Name: "superuser", Values: []string{"active"}})
}
attrs = append(attrs, &ldap.EntryAttribute{Name: "memberOf", Values: pi.GroupsForUser(u)})
attrs = append(attrs, AKAttrsToLDAP(u.Attributes)...)
dn := fmt.Sprintf("cn=%s,%s", *u.Name, pi.UserDN)
entries = append(entries, &ldap.Entry{DN: dn, Attributes: attrs})
}
}
pi.log.WithField("filter", searchReq.Filter).Debug("Search OK")
return ldap.ServerSearchResult{Entries: entries, Referrals: []string{}, Controls: []ldap.Control{}, ResultCode: ldap.LDAPResultSuccess}, nil
}