229 lines
5.4 KiB
Go
229 lines
5.4 KiB
Go
// Copyright or © or Copr. happyDNS (2020)
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//
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// contact@happydns.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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"reflect"
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"github.com/syndtr/goleveldb/leveldb"
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"github.com/syndtr/goleveldb/leveldb/util"
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"git.happydns.org/happydns/model"
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"git.happydns.org/happydns/sources"
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)
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func (s *LevelDBStorage) getSourceMeta(id []byte) (srcMeta *happydns.SourceMeta, err error) {
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var v []byte
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v, err = s.db.Get(id, nil)
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if err != nil {
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return
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}
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srcMeta = &happydns.SourceMeta{}
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err = decodeData(v, srcMeta)
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return
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}
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func (s *LevelDBStorage) GetSourceMetas(u *happydns.User) (srcs []happydns.SourceMeta, err error) {
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iter := s.search("source-")
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defer iter.Release()
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for iter.Next() {
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var srcMeta happydns.SourceMeta
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err = decodeData(iter.Value(), &srcMeta)
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if err != nil {
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return
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}
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if srcMeta.OwnerId != u.Id {
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continue
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}
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srcs = append(srcs, srcMeta)
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}
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return
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}
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func (s *LevelDBStorage) GetSourceMeta(u *happydns.User, id int64) (srcMeta *happydns.SourceMeta, err error) {
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var v []byte
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v, err = s.db.Get([]byte(fmt.Sprintf("source-%d", id)), nil)
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if err != nil {
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return
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}
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srcMeta = new(happydns.SourceMeta)
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err = decodeData(v, &srcMeta)
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if err != nil {
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return
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}
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if srcMeta.OwnerId != u.Id {
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srcMeta = nil
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err = leveldb.ErrNotFound
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}
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return
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}
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func (s *LevelDBStorage) GetSource(u *happydns.User, id int64) (src *happydns.SourceCombined, err error) {
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var v []byte
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v, err = s.db.Get([]byte(fmt.Sprintf("source-%d", id)), nil)
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if err != nil {
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return
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}
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var srcMeta happydns.SourceMeta
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err = decodeData(v, &srcMeta)
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if err != nil {
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return
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}
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if srcMeta.OwnerId != u.Id {
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src = nil
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err = leveldb.ErrNotFound
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}
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var tsrc happydns.Source
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tsrc, err = sources.FindSource(srcMeta.Type)
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src = &happydns.SourceCombined{
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tsrc,
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srcMeta,
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}
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err = decodeData(v, src)
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return
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}
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func (s *LevelDBStorage) CreateSource(u *happydns.User, src happydns.Source, comment string) (*happydns.SourceCombined, error) {
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key, id, err := s.findInt63Key("source-")
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if err != nil {
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return nil, err
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}
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sType := reflect.Indirect(reflect.ValueOf(src)).Type()
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st := &happydns.SourceCombined{
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src,
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happydns.SourceMeta{
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Type: sType.String(),
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Id: id,
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OwnerId: u.Id,
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Comment: comment,
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},
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}
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return st, s.put(key, st)
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}
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func (s *LevelDBStorage) UpdateSource(src *happydns.SourceCombined) error {
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return s.put(fmt.Sprintf("source-%d", src.Id), src)
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}
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func (s *LevelDBStorage) UpdateSourceOwner(src *happydns.SourceCombined, newOwner *happydns.User) error {
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src.OwnerId = newOwner.Id
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return s.UpdateSource(src)
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}
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func (s *LevelDBStorage) DeleteSource(src *happydns.SourceMeta) error {
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return s.delete(fmt.Sprintf("source-%d", src.Id))
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}
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func (s *LevelDBStorage) ClearSources() 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("source-")), 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) TidySources() 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("source-")), nil)
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defer iter.Release()
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for iter.Next() {
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srcMeta, err := s.getSourceMeta(iter.Key())
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if err != nil {
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// Drop unreadable sources
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log.Printf("Deleting unreadable source (%w): %v\n", err, srcMeta)
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err = tx.Delete(iter.Key(), nil)
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} else {
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_, err = s.GetUser(srcMeta.OwnerId)
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if err == leveldb.ErrNotFound {
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// Drop sources of unexistant users
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log.Printf("Deleting orphan source (user %d not found): %v\n", srcMeta.OwnerId, srcMeta)
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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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