164 lines
4.3 KiB
Go
164 lines
4.3 KiB
Go
// Copyright or © or Copr. happyDNS (2020)
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//
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// contact@happydomain.org
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//
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// This software is a computer program whose purpose is to provide a modern
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// interface to interact with DNS systems.
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//
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// This software is governed by the CeCILL license under French law and abiding
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// by the rules of distribution of free software. You can use, modify and/or
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// redistribute the software under the terms of the CeCILL license as
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// circulated by CEA, CNRS and INRIA at the following URL
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// "http://www.cecill.info".
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//
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// As a counterpart to the access to the source code and rights to copy, modify
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// and redistribute granted by the license, users are provided only with a
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// limited warranty and the software's author, the holder of the economic
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// rights, and the successive licensors have only limited liability.
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//
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// In this respect, the user's attention is drawn to the risks associated with
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// loading, using, modifying and/or developing or reproducing the software by
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// the user in light of its specific status of free software, that may mean
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// that it is complicated to manipulate, and that also therefore means that it
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// is reserved for developers and experienced professionals having in-depth
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// computer knowledge. Users are therefore encouraged to load and test the
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// software's suitability as regards their requirements in conditions enabling
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// the security of their systems and/or data to be ensured and, more generally,
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// to use and operate it in the same conditions as regards security.
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//
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// The fact that you are presently reading this means that you have had
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// knowledge of the CeCILL license and that you accept its terms.
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package database
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import (
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"fmt"
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"log"
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"strings"
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"git.happydns.org/happydomain/model"
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"github.com/syndtr/goleveldb/leveldb/util"
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)
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func (s *LevelDBStorage) GetZone(id happydns.Identifier) (z *happydns.Zone, err error) {
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z = &happydns.Zone{}
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err = s.get(fmt.Sprintf("domain.zone-%s", id.String()), &z)
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return
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}
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func (s *LevelDBStorage) getZoneMeta(id string) (z *happydns.ZoneMeta, err error) {
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z = &happydns.ZoneMeta{}
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err = s.get(id, z)
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return
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}
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func (s *LevelDBStorage) GetZoneMeta(id happydns.Identifier) (z *happydns.ZoneMeta, err error) {
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z, err = s.getZoneMeta(fmt.Sprintf("domain.zone-%s", id.String()))
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return
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}
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func (s *LevelDBStorage) CreateZone(z *happydns.Zone) error {
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key, id, err := s.findIdentifierKey("domain.zone-")
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if err != nil {
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return err
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}
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z.Id = id
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return s.put(key, z)
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}
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func (s *LevelDBStorage) UpdateZone(z *happydns.Zone) error {
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return s.put(fmt.Sprintf("domain.zone-%s", z.Id.String()), z)
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}
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func (s *LevelDBStorage) DeleteZone(z *happydns.Zone) error {
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return s.delete(fmt.Sprintf("domain.zone-%s", z.Id.String()))
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}
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func (s *LevelDBStorage) ClearZones() error {
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tx, err := s.db.OpenTransaction()
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if err != nil {
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return err
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}
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iter := tx.NewIterator(util.BytesPrefix([]byte("domain.zone-")), nil)
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defer iter.Release()
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for iter.Next() {
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err = tx.Delete(iter.Key(), nil)
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if err != nil {
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tx.Discard()
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return err
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}
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}
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err = tx.Commit()
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if err != nil {
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tx.Discard()
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return err
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}
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return nil
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}
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func (s *LevelDBStorage) TidyZones() error {
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tx, err := s.db.OpenTransaction()
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if err != nil {
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return err
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}
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iter := tx.NewIterator(util.BytesPrefix([]byte("domain-")), nil)
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defer iter.Release()
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var referencedZones []happydns.Identifier
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for iter.Next() {
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domain, _ := s.getDomain(string(iter.Key()))
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if domain != nil {
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for _, zh := range domain.ZoneHistory {
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referencedZones = append(referencedZones, zh)
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}
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}
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}
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iter = tx.NewIterator(util.BytesPrefix([]byte("domain.zone-")), nil)
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defer iter.Release()
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for iter.Next() {
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if zoneId, err := happydns.NewIdentifierFromString(strings.TrimPrefix(string(iter.Key()), "domain.zone-")); err != nil {
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// Drop zones with invalid ID
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log.Printf("Deleting unindentified zone: key=%s\n", iter.Key())
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err = tx.Delete(iter.Key(), nil)
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} else {
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foundZone := false
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for _, zid := range referencedZones {
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if zid.Equals(zoneId) {
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foundZone = true
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break
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}
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}
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if !foundZone {
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// Drop orphan zones
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log.Printf("Deleting orphan zone: %s\n", zoneId.String())
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err = tx.Delete(iter.Key(), nil)
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}
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}
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if err != nil {
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tx.Discard()
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return err
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}
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}
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err = tx.Commit()
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if err != nil {
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tx.Discard()
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return err
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}
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return nil
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}
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