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authentik/internal/outpost/ldap/instance_search.go

200 lines
6.2 KiB
Go

package ldap
import (
"errors"
"fmt"
"strings"
"sync"
"github.com/getsentry/sentry-go"
"github.com/nmcclain/ldap"
"goauthentik.io/api"
)
func (pi *ProviderInstance) SearchMe(user api.User) (ldap.ServerSearchResult, error) {
entries := make([]*ldap.Entry, 1)
entries[0] = pi.UserEntry(user)
return ldap.ServerSearchResult{Entries: entries, Referrals: []string{}, Controls: []ldap.Control{}, ResultCode: ldap.LDAPResultSuccess}, nil
}
func (pi *ProviderInstance) Search(req SearchRequest) (ldap.ServerSearchResult, error) {
accsp := sentry.StartSpan(req.ctx, "authentik.providers.ldap.search.check_access")
baseDN := strings.ToLower("," + pi.BaseDN)
entries := []*ldap.Entry{}
filterEntity, err := ldap.GetFilterObjectClass(req.Filter)
if err != nil {
return ldap.ServerSearchResult{ResultCode: ldap.LDAPResultOperationsError}, fmt.Errorf("Search Error: error parsing filter: %s", req.Filter)
}
if len(req.BindDN) < 1 {
return ldap.ServerSearchResult{ResultCode: ldap.LDAPResultInsufficientAccessRights}, fmt.Errorf("Search Error: Anonymous BindDN not allowed %s", req.BindDN)
}
if !strings.HasSuffix(req.BindDN, baseDN) {
return ldap.ServerSearchResult{ResultCode: ldap.LDAPResultInsufficientAccessRights}, fmt.Errorf("Search Error: BindDN %s not in our BaseDN %s", req.BindDN, pi.BaseDN)
}
pi.boundUsersMutex.RLock()
flags, ok := pi.boundUsers[req.BindDN]
pi.boundUsersMutex.RUnlock()
if !ok {
pi.log.Debug("User info not cached")
return ldap.ServerSearchResult{ResultCode: ldap.LDAPResultInsufficientAccessRights}, errors.New("access denied")
}
if !flags.CanSearch {
pi.log.Debug("User can't search, showing info about user")
return pi.SearchMe(flags.UserInfo)
}
accsp.Finish()
parsedFilter, err := ldap.CompileFilter(req.Filter)
if err != nil {
return ldap.ServerSearchResult{ResultCode: ldap.LDAPResultOperationsError}, fmt.Errorf("Search Error: error parsing filter: %s", req.Filter)
}
switch filterEntity {
default:
return ldap.ServerSearchResult{ResultCode: ldap.LDAPResultOperationsError}, fmt.Errorf("Search Error: unhandled filter type: %s [%s]", filterEntity, req.Filter)
case GroupObjectClass:
wg := sync.WaitGroup{}
wg.Add(2)
gEntries := make([]*ldap.Entry, 0)
uEntries := make([]*ldap.Entry, 0)
go func() {
defer wg.Done()
gapisp := sentry.StartSpan(req.ctx, "authentik.providers.ldap.search.api_group")
groups, _, err := parseFilterForGroup(pi.s.ac.Client.CoreApi.CoreGroupsList(gapisp.Context()), parsedFilter).Execute()
gapisp.Finish()
if err != nil {
req.log.WithError(err).Warning("failed to get groups")
return
}
pi.log.WithField("count", len(groups.Results)).Trace("Got results from API")
for _, g := range groups.Results {
gEntries = append(gEntries, pi.GroupEntry(pi.APIGroupToLDAPGroup(g)))
}
}()
go func() {
defer wg.Done()
uapisp := sentry.StartSpan(req.ctx, "authentik.providers.ldap.search.api_user")
users, _, err := parseFilterForUser(pi.s.ac.Client.CoreApi.CoreUsersList(uapisp.Context()), parsedFilter).Execute()
uapisp.Finish()
if err != nil {
req.log.WithError(err).Warning("failed to get groups")
return
}
for _, u := range users.Results {
uEntries = append(uEntries, pi.GroupEntry(pi.APIUserToLDAPGroup(u)))
}
}()
wg.Wait()
entries = append(gEntries, uEntries...)
case UserObjectClass, "":
uapisp := sentry.StartSpan(req.ctx, "authentik.providers.ldap.search.api_user")
users, _, err := parseFilterForUser(pi.s.ac.Client.CoreApi.CoreUsersList(uapisp.Context()), parsedFilter).Execute()
uapisp.Finish()
if err != nil {
return ldap.ServerSearchResult{ResultCode: ldap.LDAPResultOperationsError}, fmt.Errorf("API Error: %s", err)
}
for _, u := range users.Results {
entries = append(entries, pi.UserEntry(u))
}
}
return ldap.ServerSearchResult{Entries: entries, Referrals: []string{}, Controls: []ldap.Control{}, ResultCode: ldap.LDAPResultSuccess}, nil
}
func (pi *ProviderInstance) UserEntry(u api.User) *ldap.Entry {
attrs := []*ldap.EntryAttribute{
{
Name: "cn",
Values: []string{u.Username},
},
{
Name: "uid",
Values: []string{u.Uid},
},
{
Name: "name",
Values: []string{u.Name},
},
{
Name: "displayName",
Values: []string{u.Name},
},
{
Name: "mail",
Values: []string{*u.Email},
},
{
Name: "objectClass",
Values: []string{UserObjectClass, "organizationalPerson", "goauthentik.io/ldap/user"},
},
{
Name: "uidNumber",
Values: []string{pi.GetUidNumber(u)},
},
{
Name: "gidNumber",
Values: []string{pi.GetUidNumber(u)},
},
}
attrs = append(attrs, &ldap.EntryAttribute{Name: "memberOf", Values: pi.GroupsForUser(u)})
// Old fields for backwards compatibility
attrs = append(attrs, &ldap.EntryAttribute{Name: "accountStatus", Values: []string{BoolToString(*u.IsActive)}})
attrs = append(attrs, &ldap.EntryAttribute{Name: "superuser", Values: []string{BoolToString(u.IsSuperuser)}})
attrs = append(attrs, &ldap.EntryAttribute{Name: "goauthentik.io/ldap/active", Values: []string{BoolToString(*u.IsActive)}})
attrs = append(attrs, &ldap.EntryAttribute{Name: "goauthentik.io/ldap/superuser", Values: []string{BoolToString(u.IsSuperuser)}})
attrs = append(attrs, AKAttrsToLDAP(u.Attributes)...)
dn := pi.GetUserDN(u.Username)
return &ldap.Entry{DN: dn, Attributes: attrs}
}
func (pi *ProviderInstance) GroupEntry(g LDAPGroup) *ldap.Entry {
attrs := []*ldap.EntryAttribute{
{
Name: "cn",
Values: []string{g.cn},
},
{
Name: "uid",
Values: []string{g.uid},
},
{
Name: "gidNumber",
Values: []string{g.gidNumber},
},
}
if g.isVirtualGroup {
attrs = append(attrs, &ldap.EntryAttribute{
Name: "objectClass",
Values: []string{GroupObjectClass, "goauthentik.io/ldap/group", "goauthentik.io/ldap/virtual-group"},
})
} else {
attrs = append(attrs, &ldap.EntryAttribute{
Name: "objectClass",
Values: []string{GroupObjectClass, "goauthentik.io/ldap/group"},
})
}
attrs = append(attrs, &ldap.EntryAttribute{Name: "member", Values: g.member})
attrs = append(attrs, &ldap.EntryAttribute{Name: "goauthentik.io/ldap/superuser", Values: []string{BoolToString(g.isSuperuser)}})
if g.akAttributes != nil {
attrs = append(attrs, AKAttrsToLDAP(g.akAttributes)...)
}
return &ldap.Entry{DN: g.dn, Attributes: attrs}
}