mirror of
https://github.com/syncthing/syncthing.git
synced 2024-11-16 18:41:59 -07:00
2750 lines
81 KiB
Go
2750 lines
81 KiB
Go
// Copyright (C) 2014 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at http://mozilla.org/MPL/2.0/.
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package model
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import (
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"bufio"
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"crypto/tls"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"net"
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"os"
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"path/filepath"
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"reflect"
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"runtime"
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"sort"
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"strings"
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stdsync "sync"
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"time"
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"github.com/syncthing/syncthing/lib/config"
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"github.com/syncthing/syncthing/lib/connections"
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"github.com/syncthing/syncthing/lib/db"
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"github.com/syncthing/syncthing/lib/events"
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"github.com/syncthing/syncthing/lib/fs"
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"github.com/syncthing/syncthing/lib/ignore"
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"github.com/syncthing/syncthing/lib/osutil"
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"github.com/syncthing/syncthing/lib/protocol"
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"github.com/syncthing/syncthing/lib/scanner"
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"github.com/syncthing/syncthing/lib/stats"
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"github.com/syncthing/syncthing/lib/symlinks"
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"github.com/syncthing/syncthing/lib/sync"
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"github.com/syncthing/syncthing/lib/upgrade"
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"github.com/syncthing/syncthing/lib/versioner"
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"github.com/thejerf/suture"
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)
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// How many files to send in each Index/IndexUpdate message.
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const (
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indexTargetSize = 250 * 1024 // Aim for making index messages no larger than 250 KiB (uncompressed)
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indexBatchSize = 1000 // Either way, don't include more files than this
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)
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type service interface {
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BringToFront(string)
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DelayScan(d time.Duration)
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IndexUpdated() // Remote index was updated notification
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Jobs() ([]string, []string) // In progress, Queued
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Scan(subs []string) error
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Serve()
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Stop()
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getState() (folderState, time.Time, error)
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setState(state folderState)
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clearError()
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setError(err error)
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}
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type Availability struct {
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ID protocol.DeviceID `json:"id"`
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FromTemporary bool `json:"fromTemporary"`
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}
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type Model struct {
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*suture.Supervisor
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cfg *config.Wrapper
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db *db.Instance
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finder *db.BlockFinder
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progressEmitter *ProgressEmitter
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id protocol.DeviceID
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shortID protocol.ShortID
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cacheIgnoredFiles bool
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protectedFiles []string
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deviceName string
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clientName string
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clientVersion string
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folderCfgs map[string]config.FolderConfiguration // folder -> cfg
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folderFiles map[string]*db.FileSet // folder -> files
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folderDevices folderDeviceSet // folder -> deviceIDs
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deviceFolders map[protocol.DeviceID][]string // deviceID -> folders
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deviceStatRefs map[protocol.DeviceID]*stats.DeviceStatisticsReference // deviceID -> statsRef
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folderIgnores map[string]*ignore.Matcher // folder -> matcher object
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folderRunners map[string]service // folder -> puller or scanner
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folderRunnerTokens map[string][]suture.ServiceToken // folder -> tokens for puller or scanner
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folderStatRefs map[string]*stats.FolderStatisticsReference // folder -> statsRef
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fmut sync.RWMutex // protects the above
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conn map[protocol.DeviceID]connections.Connection
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closed map[protocol.DeviceID]chan struct{}
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helloMessages map[protocol.DeviceID]protocol.HelloResult
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deviceDownloads map[protocol.DeviceID]*deviceDownloadState
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remotePausedFolders map[protocol.DeviceID][]string // deviceID -> folders
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pmut sync.RWMutex // protects the above
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}
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type folderFactory func(*Model, config.FolderConfiguration, versioner.Versioner, *fs.MtimeFS) service
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var (
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symlinkWarning = stdsync.Once{}
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folderFactories = make(map[config.FolderType]folderFactory, 0)
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)
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// errors returned by the CheckFolderHealth method
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var (
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errFolderPathEmpty = errors.New("folder path empty")
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errFolderPathMissing = errors.New("folder path missing")
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errFolderMarkerMissing = errors.New("folder marker missing")
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errHomeDiskNoSpace = errors.New("home disk has insufficient free space")
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errFolderNoSpace = errors.New("folder has insufficient free space")
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errUnsupportedSymlink = errors.New("symlink not supported")
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errInvalidFilename = errors.New("filename is invalid")
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errDeviceUnknown = errors.New("unknown device")
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errDevicePaused = errors.New("device is paused")
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errDeviceIgnored = errors.New("device is ignored")
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errNotRelative = errors.New("not a relative path")
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errNotDir = errors.New("parent is not a directory")
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errNameConflict = errors.New("filename collides with existing file")
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)
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// NewModel creates and starts a new model. The model starts in read-only mode,
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// where it sends index information to connected peers and responds to requests
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// for file data without altering the local folder in any way.
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func NewModel(cfg *config.Wrapper, id protocol.DeviceID, deviceName, clientName, clientVersion string, ldb *db.Instance, protectedFiles []string) *Model {
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m := &Model{
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Supervisor: suture.New("model", suture.Spec{
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Log: func(line string) {
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l.Debugln(line)
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},
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}),
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cfg: cfg,
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db: ldb,
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finder: db.NewBlockFinder(ldb),
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progressEmitter: NewProgressEmitter(cfg),
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id: id,
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shortID: id.Short(),
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cacheIgnoredFiles: cfg.Options().CacheIgnoredFiles,
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protectedFiles: protectedFiles,
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deviceName: deviceName,
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clientName: clientName,
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clientVersion: clientVersion,
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folderCfgs: make(map[string]config.FolderConfiguration),
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folderFiles: make(map[string]*db.FileSet),
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folderDevices: make(folderDeviceSet),
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deviceFolders: make(map[protocol.DeviceID][]string),
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deviceStatRefs: make(map[protocol.DeviceID]*stats.DeviceStatisticsReference),
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folderIgnores: make(map[string]*ignore.Matcher),
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folderRunners: make(map[string]service),
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folderRunnerTokens: make(map[string][]suture.ServiceToken),
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folderStatRefs: make(map[string]*stats.FolderStatisticsReference),
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conn: make(map[protocol.DeviceID]connections.Connection),
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closed: make(map[protocol.DeviceID]chan struct{}),
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helloMessages: make(map[protocol.DeviceID]protocol.HelloResult),
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deviceDownloads: make(map[protocol.DeviceID]*deviceDownloadState),
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remotePausedFolders: make(map[protocol.DeviceID][]string),
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fmut: sync.NewRWMutex(),
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pmut: sync.NewRWMutex(),
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}
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if cfg.Options().ProgressUpdateIntervalS > -1 {
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go m.progressEmitter.Serve()
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}
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cfg.Subscribe(m)
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return m
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}
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// StartDeadlockDetector starts a deadlock detector on the models locks which
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// causes panics in case the locks cannot be acquired in the given timeout
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// period.
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func (m *Model) StartDeadlockDetector(timeout time.Duration) {
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l.Infof("Starting deadlock detector with %v timeout", timeout)
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detector := newDeadlockDetector(timeout)
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detector.Watch("fmut", m.fmut)
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detector.Watch("pmut", m.pmut)
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}
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// StartFolder constructs the folder service and starts it.
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func (m *Model) StartFolder(folder string) {
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m.fmut.Lock()
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m.pmut.Lock()
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folderType := m.startFolderLocked(folder)
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folderCfg := m.folderCfgs[folder]
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m.pmut.Unlock()
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m.fmut.Unlock()
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l.Infof("Ready to synchronize %s (%s)", folderCfg.Description(), folderType)
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}
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func (m *Model) startFolderLocked(folder string) config.FolderType {
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cfg, ok := m.folderCfgs[folder]
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if !ok {
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panic("cannot start nonexistent folder " + cfg.Description())
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}
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_, ok = m.folderRunners[folder]
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if ok {
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panic("cannot start already running folder " + cfg.Description())
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}
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folderFactory, ok := folderFactories[cfg.Type]
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if !ok {
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panic(fmt.Sprintf("unknown folder type 0x%x", cfg.Type))
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}
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fs := m.folderFiles[folder]
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// Find any devices for which we hold the index in the db, but the folder
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// is not shared, and drop it.
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expected := mapDevices(cfg.DeviceIDs())
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for _, available := range fs.ListDevices() {
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if _, ok := expected[available]; !ok {
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l.Debugln("dropping", folder, "state for", available)
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fs.Replace(available, nil)
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}
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}
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// Close connections to affected devices
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for _, id := range cfg.DeviceIDs() {
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m.closeLocked(id)
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}
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v, ok := fs.Sequence(protocol.LocalDeviceID), true
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indexHasFiles := ok && v > 0
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if !indexHasFiles {
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// It's a blank folder, so this may the first time we're looking at
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// it. Attempt to create and tag with our marker as appropriate. We
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// don't really do anything with errors at this point except warn -
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// if these things don't work, we still want to start the folder and
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// it'll show up as errored later.
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if _, err := os.Stat(cfg.Path()); os.IsNotExist(err) {
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if err := osutil.MkdirAll(cfg.Path(), 0700); err != nil {
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l.Warnln("Creating folder:", err)
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}
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}
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if err := cfg.CreateMarker(); err != nil {
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l.Warnln("Creating folder marker:", err)
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}
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}
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var ver versioner.Versioner
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if len(cfg.Versioning.Type) > 0 {
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versionerFactory, ok := versioner.Factories[cfg.Versioning.Type]
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if !ok {
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l.Fatalf("Requested versioning type %q that does not exist", cfg.Versioning.Type)
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}
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ver = versionerFactory(folder, cfg.Path(), cfg.Versioning.Params)
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if service, ok := ver.(suture.Service); ok {
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// The versioner implements the suture.Service interface, so
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// expects to be run in the background in addition to being called
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// when files are going to be archived.
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token := m.Add(service)
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m.folderRunnerTokens[folder] = append(m.folderRunnerTokens[folder], token)
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}
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}
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p := folderFactory(m, cfg, ver, fs.MtimeFS())
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m.folderRunners[folder] = p
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m.warnAboutOverwritingProtectedFiles(folder)
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token := m.Add(p)
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m.folderRunnerTokens[folder] = append(m.folderRunnerTokens[folder], token)
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return cfg.Type
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}
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func (m *Model) warnAboutOverwritingProtectedFiles(folder string) {
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if m.folderCfgs[folder].Type == config.FolderTypeSendOnly {
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return
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}
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folderLocation := m.folderCfgs[folder].Path()
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ignores := m.folderIgnores[folder]
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var filesAtRisk []string
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for _, protectedFilePath := range m.protectedFiles {
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// check if file is synced in this folder
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if !strings.HasPrefix(protectedFilePath, folderLocation) {
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continue
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}
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// check if file is ignored
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if ignores.Match(protectedFilePath).IsIgnored() {
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continue
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}
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filesAtRisk = append(filesAtRisk, protectedFilePath)
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}
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if len(filesAtRisk) > 0 {
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l.Warnln("Some protected files may be overwritten and cause issues. See https://docs.syncthing.net/users/config.html#syncing-configuration-files for more information. The at risk files are:", strings.Join(filesAtRisk, ", "))
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}
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}
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func (m *Model) AddFolder(cfg config.FolderConfiguration) {
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if len(cfg.ID) == 0 {
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panic("cannot add empty folder id")
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}
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m.fmut.Lock()
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m.addFolderLocked(cfg)
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m.fmut.Unlock()
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}
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func (m *Model) addFolderLocked(cfg config.FolderConfiguration) {
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m.folderCfgs[cfg.ID] = cfg
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m.folderFiles[cfg.ID] = db.NewFileSet(cfg.ID, m.db)
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for _, device := range cfg.Devices {
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m.folderDevices.set(device.DeviceID, cfg.ID)
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m.deviceFolders[device.DeviceID] = append(m.deviceFolders[device.DeviceID], cfg.ID)
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}
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ignores := ignore.New(m.cacheIgnoredFiles)
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if err := ignores.Load(filepath.Join(cfg.Path(), ".stignore")); err != nil && !os.IsNotExist(err) {
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l.Warnln("Loading ignores:", err)
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}
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m.folderIgnores[cfg.ID] = ignores
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}
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func (m *Model) RemoveFolder(folder string) {
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m.fmut.Lock()
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m.pmut.Lock()
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m.tearDownFolderLocked(folder)
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// Remove it from the database
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db.DropFolder(m.db, folder)
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m.pmut.Unlock()
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m.fmut.Unlock()
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}
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func (m *Model) tearDownFolderLocked(folder string) {
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// Stop the services running for this folder
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for _, id := range m.folderRunnerTokens[folder] {
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m.Remove(id)
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}
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// Close connections to affected devices
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for dev := range m.folderDevices[folder] {
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if conn, ok := m.conn[dev]; ok {
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closeRawConn(conn)
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}
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}
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// Clean up our config maps
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delete(m.folderCfgs, folder)
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delete(m.folderFiles, folder)
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delete(m.folderDevices, folder)
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delete(m.folderIgnores, folder)
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delete(m.folderRunners, folder)
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delete(m.folderRunnerTokens, folder)
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delete(m.folderStatRefs, folder)
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for dev, folders := range m.deviceFolders {
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m.deviceFolders[dev] = stringSliceWithout(folders, folder)
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}
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}
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func (m *Model) RestartFolder(cfg config.FolderConfiguration) {
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if len(cfg.ID) == 0 {
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panic("cannot add empty folder id")
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}
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m.fmut.Lock()
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m.pmut.Lock()
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m.tearDownFolderLocked(cfg.ID)
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if !cfg.Paused {
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m.addFolderLocked(cfg)
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folderType := m.startFolderLocked(cfg.ID)
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l.Infoln("Restarted folder", cfg.Description(), fmt.Sprintf("(%s)", folderType))
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} else {
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l.Infoln("Paused folder", cfg.Description())
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}
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m.pmut.Unlock()
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m.fmut.Unlock()
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}
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type ConnectionInfo struct {
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protocol.Statistics
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Connected bool
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Paused bool
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Address string
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ClientVersion string
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Type string
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}
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func (info ConnectionInfo) MarshalJSON() ([]byte, error) {
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return json.Marshal(map[string]interface{}{
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"at": info.At,
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"inBytesTotal": info.InBytesTotal,
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"outBytesTotal": info.OutBytesTotal,
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"connected": info.Connected,
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"paused": info.Paused,
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"address": info.Address,
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"clientVersion": info.ClientVersion,
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"type": info.Type,
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})
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}
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// ConnectionStats returns a map with connection statistics for each device.
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func (m *Model) ConnectionStats() map[string]interface{} {
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m.fmut.RLock()
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m.pmut.RLock()
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res := make(map[string]interface{})
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devs := m.cfg.Devices()
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conns := make(map[string]ConnectionInfo, len(devs))
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for device, deviceCfg := range devs {
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hello := m.helloMessages[device]
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versionString := hello.ClientVersion
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if hello.ClientName != "syncthing" {
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versionString = hello.ClientName + " " + hello.ClientVersion
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}
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ci := ConnectionInfo{
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ClientVersion: strings.TrimSpace(versionString),
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Paused: deviceCfg.Paused,
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}
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if conn, ok := m.conn[device]; ok {
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ci.Type = conn.Type()
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ci.Connected = ok
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ci.Statistics = conn.Statistics()
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if addr := conn.RemoteAddr(); addr != nil {
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ci.Address = addr.String()
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}
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}
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conns[device.String()] = ci
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}
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res["connections"] = conns
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m.pmut.RUnlock()
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m.fmut.RUnlock()
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in, out := protocol.TotalInOut()
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res["total"] = ConnectionInfo{
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Statistics: protocol.Statistics{
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At: time.Now(),
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InBytesTotal: in,
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OutBytesTotal: out,
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},
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}
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return res
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}
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// DeviceStatistics returns statistics about each device
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func (m *Model) DeviceStatistics() map[string]stats.DeviceStatistics {
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res := make(map[string]stats.DeviceStatistics)
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for id := range m.cfg.Devices() {
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res[id.String()] = m.deviceStatRef(id).GetStatistics()
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}
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return res
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}
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// FolderStatistics returns statistics about each folder
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func (m *Model) FolderStatistics() map[string]stats.FolderStatistics {
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res := make(map[string]stats.FolderStatistics)
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for id := range m.cfg.Folders() {
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res[id] = m.folderStatRef(id).GetStatistics()
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}
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return res
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}
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type FolderCompletion struct {
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CompletionPct float64
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NeedBytes int64
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GlobalBytes int64
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NeedDeletes int64
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}
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// Completion returns the completion status, in percent, for the given device
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// and folder.
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func (m *Model) Completion(device protocol.DeviceID, folder string) FolderCompletion {
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m.fmut.RLock()
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rf, ok := m.folderFiles[folder]
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m.fmut.RUnlock()
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if !ok {
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return FolderCompletion{} // Folder doesn't exist, so we hardly have any of it
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}
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tot := rf.GlobalSize().Bytes
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if tot == 0 {
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// Folder is empty, so we have all of it
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return FolderCompletion{
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CompletionPct: 100,
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}
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}
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m.pmut.RLock()
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counts := m.deviceDownloads[device].GetBlockCounts(folder)
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m.pmut.RUnlock()
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var need, fileNeed, downloaded, deletes int64
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rf.WithNeedTruncated(device, func(f db.FileIntf) bool {
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ft := f.(db.FileInfoTruncated)
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// If the file is deleted, we account it only in the deleted column.
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if ft.Deleted {
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deletes++
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return true
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|
}
|
|
|
|
// This might might be more than it really is, because some blocks can be of a smaller size.
|
|
downloaded = int64(counts[ft.Name] * protocol.BlockSize)
|
|
|
|
fileNeed = ft.FileSize() - downloaded
|
|
if fileNeed < 0 {
|
|
fileNeed = 0
|
|
}
|
|
|
|
need += fileNeed
|
|
return true
|
|
})
|
|
|
|
needRatio := float64(need) / float64(tot)
|
|
completionPct := 100 * (1 - needRatio)
|
|
|
|
// If the completion is 100% but there are deletes we need to handle,
|
|
// drop it down a notch. Hack for consumers that look only at the
|
|
// percentage (our own GUI does the same calculation as here on it's own
|
|
// and needs the same fixup).
|
|
if need == 0 && deletes > 0 {
|
|
completionPct = 95 // chosen by fair dice roll
|
|
}
|
|
|
|
l.Debugf("%v Completion(%s, %q): %f (%d / %d = %f)", m, device, folder, completionPct, need, tot, needRatio)
|
|
|
|
return FolderCompletion{
|
|
CompletionPct: completionPct,
|
|
NeedBytes: need,
|
|
GlobalBytes: tot,
|
|
NeedDeletes: deletes,
|
|
}
|
|
}
|
|
|
|
func addSizeOfFile(s *db.Counts, f db.FileIntf) {
|
|
switch {
|
|
case f.IsDeleted():
|
|
s.Deleted++
|
|
case f.IsDirectory():
|
|
s.Directories++
|
|
case f.IsSymlink():
|
|
s.Symlinks++
|
|
default:
|
|
s.Files++
|
|
}
|
|
s.Bytes += f.FileSize()
|
|
}
|
|
|
|
// GlobalSize returns the number of files, deleted files and total bytes for all
|
|
// files in the global model.
|
|
func (m *Model) GlobalSize(folder string) db.Counts {
|
|
m.fmut.RLock()
|
|
defer m.fmut.RUnlock()
|
|
if rf, ok := m.folderFiles[folder]; ok {
|
|
return rf.GlobalSize()
|
|
}
|
|
return db.Counts{}
|
|
}
|
|
|
|
// LocalSize returns the number of files, deleted files and total bytes for all
|
|
// files in the local folder.
|
|
func (m *Model) LocalSize(folder string) db.Counts {
|
|
m.fmut.RLock()
|
|
defer m.fmut.RUnlock()
|
|
if rf, ok := m.folderFiles[folder]; ok {
|
|
return rf.LocalSize()
|
|
}
|
|
return db.Counts{}
|
|
}
|
|
|
|
// NeedSize returns the number and total size of currently needed files.
|
|
func (m *Model) NeedSize(folder string) db.Counts {
|
|
m.fmut.RLock()
|
|
defer m.fmut.RUnlock()
|
|
|
|
var result db.Counts
|
|
if rf, ok := m.folderFiles[folder]; ok {
|
|
ignores := m.folderIgnores[folder]
|
|
cfg := m.folderCfgs[folder]
|
|
rf.WithNeedTruncated(protocol.LocalDeviceID, func(f db.FileIntf) bool {
|
|
if shouldIgnore(f, ignores, cfg.IgnoreDelete, defTempNamer) {
|
|
return true
|
|
}
|
|
|
|
addSizeOfFile(&result, f)
|
|
return true
|
|
})
|
|
}
|
|
result.Bytes -= m.progressEmitter.BytesCompleted(folder)
|
|
l.Debugf("%v NeedSize(%q): %v", m, folder, result)
|
|
return result
|
|
}
|
|
|
|
// NeedFolderFiles returns paginated list of currently needed files in
|
|
// progress, queued, and to be queued on next puller iteration, as well as the
|
|
// total number of files currently needed.
|
|
func (m *Model) NeedFolderFiles(folder string, page, perpage int) ([]db.FileInfoTruncated, []db.FileInfoTruncated, []db.FileInfoTruncated, int) {
|
|
m.fmut.RLock()
|
|
defer m.fmut.RUnlock()
|
|
|
|
total := 0
|
|
|
|
rf, ok := m.folderFiles[folder]
|
|
if !ok {
|
|
return nil, nil, nil, 0
|
|
}
|
|
|
|
var progress, queued, rest []db.FileInfoTruncated
|
|
var seen map[string]struct{}
|
|
|
|
skip := (page - 1) * perpage
|
|
get := perpage
|
|
|
|
runner, ok := m.folderRunners[folder]
|
|
if ok {
|
|
allProgressNames, allQueuedNames := runner.Jobs()
|
|
|
|
var progressNames, queuedNames []string
|
|
progressNames, skip, get = getChunk(allProgressNames, skip, get)
|
|
queuedNames, skip, get = getChunk(allQueuedNames, skip, get)
|
|
|
|
progress = make([]db.FileInfoTruncated, len(progressNames))
|
|
queued = make([]db.FileInfoTruncated, len(queuedNames))
|
|
seen = make(map[string]struct{}, len(progressNames)+len(queuedNames))
|
|
|
|
for i, name := range progressNames {
|
|
if f, ok := rf.GetGlobalTruncated(name); ok {
|
|
progress[i] = f
|
|
seen[name] = struct{}{}
|
|
}
|
|
}
|
|
|
|
for i, name := range queuedNames {
|
|
if f, ok := rf.GetGlobalTruncated(name); ok {
|
|
queued[i] = f
|
|
seen[name] = struct{}{}
|
|
}
|
|
}
|
|
}
|
|
|
|
rest = make([]db.FileInfoTruncated, 0, perpage)
|
|
ignores := m.folderIgnores[folder]
|
|
cfg := m.folderCfgs[folder]
|
|
rf.WithNeedTruncated(protocol.LocalDeviceID, func(f db.FileIntf) bool {
|
|
if shouldIgnore(f, ignores, cfg.IgnoreDelete, defTempNamer) {
|
|
return true
|
|
}
|
|
|
|
total++
|
|
if skip > 0 {
|
|
skip--
|
|
return true
|
|
}
|
|
if get > 0 {
|
|
ft := f.(db.FileInfoTruncated)
|
|
if _, ok := seen[ft.Name]; !ok {
|
|
rest = append(rest, ft)
|
|
get--
|
|
}
|
|
}
|
|
return true
|
|
})
|
|
|
|
return progress, queued, rest, total
|
|
}
|
|
|
|
// Index is called when a new device is connected and we receive their full index.
|
|
// Implements the protocol.Model interface.
|
|
func (m *Model) Index(deviceID protocol.DeviceID, folder string, fs []protocol.FileInfo) {
|
|
l.Debugf("IDX(in): %s %q: %d files", deviceID, folder, len(fs))
|
|
|
|
if !m.folderSharedWith(folder, deviceID) {
|
|
l.Debugf("Unexpected folder ID %q sent from device %q; ensure that the folder exists and that this device is selected under \"Share With\" in the folder configuration.", folder, deviceID)
|
|
return
|
|
}
|
|
|
|
m.fmut.RLock()
|
|
files, ok := m.folderFiles[folder]
|
|
runner := m.folderRunners[folder]
|
|
m.fmut.RUnlock()
|
|
|
|
if !ok {
|
|
l.Fatalf("Index for nonexistent folder %q", folder)
|
|
}
|
|
|
|
if runner != nil {
|
|
// Runner may legitimately not be set if this is the "cleanup" Index
|
|
// message at startup.
|
|
defer runner.IndexUpdated()
|
|
}
|
|
|
|
m.pmut.RLock()
|
|
m.deviceDownloads[deviceID].Update(folder, makeForgetUpdate(fs))
|
|
m.pmut.RUnlock()
|
|
|
|
files.Replace(deviceID, fs)
|
|
|
|
events.Default.Log(events.RemoteIndexUpdated, map[string]interface{}{
|
|
"device": deviceID.String(),
|
|
"folder": folder,
|
|
"items": len(fs),
|
|
"version": files.Sequence(deviceID),
|
|
})
|
|
}
|
|
|
|
// IndexUpdate is called for incremental updates to connected devices' indexes.
|
|
// Implements the protocol.Model interface.
|
|
func (m *Model) IndexUpdate(deviceID protocol.DeviceID, folder string, fs []protocol.FileInfo) {
|
|
l.Debugf("%v IDXUP(in): %s / %q: %d files", m, deviceID, folder, len(fs))
|
|
|
|
if !m.folderSharedWith(folder, deviceID) {
|
|
l.Debugf("Update for unexpected folder ID %q sent from device %q; ensure that the folder exists and that this device is selected under \"Share With\" in the folder configuration.", folder, deviceID)
|
|
return
|
|
}
|
|
|
|
m.fmut.RLock()
|
|
files := m.folderFiles[folder]
|
|
runner, ok := m.folderRunners[folder]
|
|
m.fmut.RUnlock()
|
|
|
|
if !ok {
|
|
l.Fatalf("IndexUpdate for nonexistent folder %q", folder)
|
|
}
|
|
|
|
m.pmut.RLock()
|
|
m.deviceDownloads[deviceID].Update(folder, makeForgetUpdate(fs))
|
|
m.pmut.RUnlock()
|
|
|
|
files.Update(deviceID, fs)
|
|
|
|
events.Default.Log(events.RemoteIndexUpdated, map[string]interface{}{
|
|
"device": deviceID.String(),
|
|
"folder": folder,
|
|
"items": len(fs),
|
|
"version": files.Sequence(deviceID),
|
|
})
|
|
|
|
runner.IndexUpdated()
|
|
}
|
|
|
|
func (m *Model) folderSharedWith(folder string, deviceID protocol.DeviceID) bool {
|
|
m.fmut.RLock()
|
|
shared := m.folderSharedWithLocked(folder, deviceID)
|
|
m.fmut.RUnlock()
|
|
return shared
|
|
}
|
|
|
|
func (m *Model) folderSharedWithLocked(folder string, deviceID protocol.DeviceID) bool {
|
|
for _, nfolder := range m.deviceFolders[deviceID] {
|
|
if nfolder == folder {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
func (m *Model) ClusterConfig(deviceID protocol.DeviceID, cm protocol.ClusterConfig) {
|
|
// Check the peer device's announced folders against our own. Emits events
|
|
// for folders that we don't expect (unknown or not shared).
|
|
// Also, collect a list of folders we do share, and if he's interested in
|
|
// temporary indexes, subscribe the connection.
|
|
|
|
tempIndexFolders := make([]string, 0, len(cm.Folders))
|
|
|
|
m.pmut.RLock()
|
|
conn, ok := m.conn[deviceID]
|
|
hello := m.helloMessages[deviceID]
|
|
m.pmut.RUnlock()
|
|
if !ok {
|
|
panic("bug: ClusterConfig called on closed or nonexistent connection")
|
|
}
|
|
|
|
dbLocation := filepath.Dir(m.db.Location())
|
|
|
|
// See issue #3802 - in short, we can't send modern symlink entries to older
|
|
// clients.
|
|
dropSymlinks := false
|
|
if hello.ClientName == m.clientName && upgrade.CompareVersions(hello.ClientVersion, "v0.14.14") < 0 {
|
|
l.Warnln("Not sending symlinks to old client", deviceID, "- please upgrade to v0.14.14 or newer")
|
|
dropSymlinks = true
|
|
}
|
|
|
|
m.fmut.Lock()
|
|
var paused []string
|
|
for _, folder := range cm.Folders {
|
|
if folder.Paused {
|
|
paused = append(paused, folder.ID)
|
|
continue
|
|
}
|
|
|
|
if cfg, ok := m.cfg.Folder(folder.ID); ok && cfg.Paused {
|
|
continue
|
|
}
|
|
|
|
if !m.folderSharedWithLocked(folder.ID, deviceID) {
|
|
events.Default.Log(events.FolderRejected, map[string]string{
|
|
"folder": folder.ID,
|
|
"folderLabel": folder.Label,
|
|
"device": deviceID.String(),
|
|
})
|
|
l.Infof("Unexpected folder %s sent from device %q; ensure that the folder exists and that this device is selected under \"Share With\" in the folder configuration.", folder.Description(), deviceID)
|
|
continue
|
|
}
|
|
if !folder.DisableTempIndexes {
|
|
tempIndexFolders = append(tempIndexFolders, folder.ID)
|
|
}
|
|
|
|
fs := m.folderFiles[folder.ID]
|
|
myIndexID := fs.IndexID(protocol.LocalDeviceID)
|
|
mySequence := fs.Sequence(protocol.LocalDeviceID)
|
|
var startSequence int64
|
|
|
|
for _, dev := range folder.Devices {
|
|
if dev.ID == m.id {
|
|
// This is the other side's description of what it knows
|
|
// about us. Lets check to see if we can start sending index
|
|
// updates directly or need to send the index from start...
|
|
|
|
if dev.IndexID == myIndexID {
|
|
// They say they've seen our index ID before, so we can
|
|
// send a delta update only.
|
|
|
|
if dev.MaxSequence > mySequence {
|
|
// Safety check. They claim to have more or newer
|
|
// index data than we have - either we have lost
|
|
// index data, or reset the index without resetting
|
|
// the IndexID, or something else weird has
|
|
// happened. We send a full index to reset the
|
|
// situation.
|
|
l.Infof("Device %v folder %s is delta index compatible, but seems out of sync with reality", deviceID, folder.Description())
|
|
startSequence = 0
|
|
continue
|
|
}
|
|
|
|
l.Debugf("Device %v folder %s is delta index compatible (mlv=%d)", deviceID, folder.Description(), dev.MaxSequence)
|
|
startSequence = dev.MaxSequence
|
|
} else if dev.IndexID != 0 {
|
|
// They say they've seen an index ID from us, but it's
|
|
// not the right one. Either they are confused or we
|
|
// must have reset our database since last talking to
|
|
// them. We'll start with a full index transfer.
|
|
l.Infof("Device %v folder %s has mismatching index ID for us (%v != %v)", deviceID, folder.Description(), dev.IndexID, myIndexID)
|
|
startSequence = 0
|
|
}
|
|
} else if dev.ID == deviceID && dev.IndexID != 0 {
|
|
// This is the other side's description of themselves. We
|
|
// check to see that it matches the IndexID we have on file,
|
|
// otherwise we drop our old index data and expect to get a
|
|
// completely new set.
|
|
|
|
theirIndexID := fs.IndexID(deviceID)
|
|
if dev.IndexID == 0 {
|
|
// They're not announcing an index ID. This means they
|
|
// do not support delta indexes and we should clear any
|
|
// information we have from them before accepting their
|
|
// index, which will presumably be a full index.
|
|
fs.Replace(deviceID, nil)
|
|
} else if dev.IndexID != theirIndexID {
|
|
// The index ID we have on file is not what they're
|
|
// announcing. They must have reset their database and
|
|
// will probably send us a full index. We drop any
|
|
// information we have and remember this new index ID
|
|
// instead.
|
|
l.Infof("Device %v folder %s has a new index ID (%v)", deviceID, folder.Description(), dev.IndexID)
|
|
fs.Replace(deviceID, nil)
|
|
fs.SetIndexID(deviceID, dev.IndexID)
|
|
} else {
|
|
// They're sending a recognized index ID and will most
|
|
// likely use delta indexes. We might already have files
|
|
// that we need to pull so let the folder runner know
|
|
// that it should recheck the index data.
|
|
if runner := m.folderRunners[folder.ID]; runner != nil {
|
|
defer runner.IndexUpdated()
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
go sendIndexes(conn, folder.ID, fs, m.folderIgnores[folder.ID], startSequence, dbLocation, dropSymlinks)
|
|
}
|
|
|
|
m.pmut.Lock()
|
|
m.remotePausedFolders[deviceID] = paused
|
|
m.pmut.Unlock()
|
|
|
|
// This breaks if we send multiple CM messages during the same connection.
|
|
if len(tempIndexFolders) > 0 {
|
|
m.pmut.RLock()
|
|
conn, ok := m.conn[deviceID]
|
|
m.pmut.RUnlock()
|
|
// In case we've got ClusterConfig, and the connection disappeared
|
|
// from infront of our nose.
|
|
if ok {
|
|
m.progressEmitter.temporaryIndexSubscribe(conn, tempIndexFolders)
|
|
}
|
|
}
|
|
|
|
var changed = false
|
|
if deviceCfg := m.cfg.Devices()[deviceID]; deviceCfg.Introducer {
|
|
foldersDevices, introduced := m.handleIntroductions(deviceCfg, cm)
|
|
if introduced {
|
|
changed = true
|
|
}
|
|
// If permitted, check if the introducer has unshare devices/folders with
|
|
// some of the devices/folders that we know were introduced to us by him.
|
|
if !deviceCfg.SkipIntroductionRemovals && m.handleDeintroductions(deviceCfg, cm, foldersDevices) {
|
|
changed = true
|
|
}
|
|
}
|
|
m.fmut.Unlock()
|
|
|
|
if changed {
|
|
if err := m.cfg.Save(); err != nil {
|
|
l.Warnln("Failed to save config", err)
|
|
}
|
|
}
|
|
}
|
|
|
|
// handleIntroductions handles adding devices/shares that are shared by an introducer device
|
|
func (m *Model) handleIntroductions(introducerCfg config.DeviceConfiguration, cm protocol.ClusterConfig) (folderDeviceSet, bool) {
|
|
// This device is an introducer. Go through the announced lists of folders
|
|
// and devices and add what we are missing, remove what we have extra that
|
|
// has been introducer by the introducer.
|
|
changed := false
|
|
|
|
foldersDevices := make(folderDeviceSet)
|
|
|
|
for _, folder := range cm.Folders {
|
|
// We don't have this folder, skip.
|
|
if _, ok := m.folderDevices[folder.ID]; !ok {
|
|
continue
|
|
}
|
|
|
|
// Adds devices which we do not have, but the introducer has
|
|
// for the folders that we have in common. Also, shares folders
|
|
// with devices that we have in common, yet are currently not sharing
|
|
// the folder.
|
|
nextDevice:
|
|
for _, device := range folder.Devices {
|
|
foldersDevices.set(device.ID, folder.ID)
|
|
|
|
if _, ok := m.cfg.Devices()[device.ID]; !ok {
|
|
// The device is currently unknown. Add it to the config.
|
|
m.introduceDevice(device, introducerCfg)
|
|
changed = true
|
|
}
|
|
|
|
for _, er := range m.deviceFolders[device.ID] {
|
|
if er == folder.ID {
|
|
// We already share the folder with this device, so
|
|
// nothing to do.
|
|
continue nextDevice
|
|
}
|
|
}
|
|
|
|
// We don't yet share this folder with this device. Add the device
|
|
// to sharing list of the folder.
|
|
m.introduceDeviceToFolder(device, folder, introducerCfg)
|
|
changed = true
|
|
}
|
|
}
|
|
|
|
return foldersDevices, changed
|
|
}
|
|
|
|
// handleIntroductions handles removals of devices/shares that are removed by an introducer device
|
|
func (m *Model) handleDeintroductions(introducerCfg config.DeviceConfiguration, cm protocol.ClusterConfig, foldersDevices folderDeviceSet) bool {
|
|
changed := false
|
|
foldersIntroducedByOthers := make(folderDeviceSet)
|
|
|
|
// Check if we should unshare some folders, if the introducer has unshared them.
|
|
for _, folderCfg := range m.cfg.Folders() {
|
|
folderChanged := false
|
|
for i := 0; i < len(folderCfg.Devices); i++ {
|
|
if folderCfg.Devices[i].IntroducedBy == introducerCfg.DeviceID {
|
|
if !foldersDevices.has(folderCfg.Devices[i].DeviceID, folderCfg.ID) {
|
|
// We could not find that folder shared on the
|
|
// introducer with the device that was introduced to us.
|
|
// We should follow and unshare aswell.
|
|
l.Infof("Unsharing folder %s with %v as introducer %v no longer shares the folder with that device", folderCfg.Description(), folderCfg.Devices[i].DeviceID, folderCfg.Devices[i].IntroducedBy)
|
|
folderCfg.Devices = append(folderCfg.Devices[:i], folderCfg.Devices[i+1:]...)
|
|
i--
|
|
folderChanged = true
|
|
}
|
|
} else {
|
|
foldersIntroducedByOthers.set(folderCfg.Devices[i].DeviceID, folderCfg.ID)
|
|
}
|
|
}
|
|
|
|
// We've modified the folder, hence update it.
|
|
if folderChanged {
|
|
m.cfg.SetFolder(folderCfg)
|
|
changed = true
|
|
}
|
|
}
|
|
|
|
// Check if we should remove some devices, if the introducer no longer
|
|
// shares any folder with them. Yet do not remove if we share other
|
|
// folders that haven't been introduced by the introducer.
|
|
for _, device := range m.cfg.Devices() {
|
|
if device.IntroducedBy == introducerCfg.DeviceID {
|
|
if !foldersDevices.hasDevice(device.DeviceID) {
|
|
if foldersIntroducedByOthers.hasDevice(device.DeviceID) {
|
|
l.Infof("Would have removed %v as %v no longer shares any folders, yet there are other folders that are shared with this device that haven't been introduced by this introducer.", device.DeviceID, device.IntroducedBy)
|
|
continue
|
|
}
|
|
// The introducer no longer shares any folder with the
|
|
// device, remove the device.
|
|
l.Infof("Removing device %v as introducer %v no longer shares any folders with that device", device.DeviceID, device.IntroducedBy)
|
|
m.cfg.RemoveDevice(device.DeviceID)
|
|
changed = true
|
|
}
|
|
}
|
|
}
|
|
|
|
return changed
|
|
}
|
|
|
|
func (m *Model) introduceDevice(device protocol.Device, introducerCfg config.DeviceConfiguration) {
|
|
addresses := []string{"dynamic"}
|
|
for _, addr := range device.Addresses {
|
|
if addr != "dynamic" {
|
|
addresses = append(addresses, addr)
|
|
}
|
|
}
|
|
|
|
l.Infof("Adding device %v to config (vouched for by introducer %v)", device.ID, introducerCfg.DeviceID)
|
|
newDeviceCfg := config.DeviceConfiguration{
|
|
DeviceID: device.ID,
|
|
Name: device.Name,
|
|
Compression: introducerCfg.Compression,
|
|
Addresses: addresses,
|
|
CertName: device.CertName,
|
|
IntroducedBy: introducerCfg.DeviceID,
|
|
}
|
|
|
|
// The introducers' introducers are also our introducers.
|
|
if device.Introducer {
|
|
l.Infof("Device %v is now also an introducer", device.ID)
|
|
newDeviceCfg.Introducer = true
|
|
newDeviceCfg.SkipIntroductionRemovals = device.SkipIntroductionRemovals
|
|
}
|
|
|
|
m.cfg.SetDevice(newDeviceCfg)
|
|
}
|
|
|
|
func (m *Model) introduceDeviceToFolder(device protocol.Device, folder protocol.Folder, introducerCfg config.DeviceConfiguration) {
|
|
l.Infof("Sharing folder %s with %v (vouched for by introducer %v)", folder.Description(), device.ID, introducerCfg.DeviceID)
|
|
|
|
m.deviceFolders[device.ID] = append(m.deviceFolders[device.ID], folder.ID)
|
|
m.folderDevices.set(device.ID, folder.ID)
|
|
|
|
folderCfg := m.cfg.Folders()[folder.ID]
|
|
folderCfg.Devices = append(folderCfg.Devices, config.FolderDeviceConfiguration{
|
|
DeviceID: device.ID,
|
|
IntroducedBy: introducerCfg.DeviceID,
|
|
})
|
|
m.cfg.SetFolder(folderCfg)
|
|
}
|
|
|
|
// Closed is called when a connection has been closed
|
|
func (m *Model) Closed(conn protocol.Connection, err error) {
|
|
device := conn.ID()
|
|
|
|
m.pmut.Lock()
|
|
conn, ok := m.conn[device]
|
|
if ok {
|
|
m.progressEmitter.temporaryIndexUnsubscribe(conn)
|
|
}
|
|
delete(m.conn, device)
|
|
delete(m.helloMessages, device)
|
|
delete(m.deviceDownloads, device)
|
|
delete(m.remotePausedFolders, device)
|
|
closed := m.closed[device]
|
|
delete(m.closed, device)
|
|
m.pmut.Unlock()
|
|
|
|
l.Infof("Connection to %s closed: %v", device, err)
|
|
events.Default.Log(events.DeviceDisconnected, map[string]string{
|
|
"id": device.String(),
|
|
"error": err.Error(),
|
|
})
|
|
close(closed)
|
|
}
|
|
|
|
// close will close the underlying connection for a given device
|
|
func (m *Model) close(device protocol.DeviceID) {
|
|
m.pmut.Lock()
|
|
m.closeLocked(device)
|
|
m.pmut.Unlock()
|
|
}
|
|
|
|
// closeLocked will close the underlying connection for a given device
|
|
func (m *Model) closeLocked(device protocol.DeviceID) {
|
|
conn, ok := m.conn[device]
|
|
if !ok {
|
|
// There is no connection to close
|
|
return
|
|
}
|
|
|
|
closeRawConn(conn)
|
|
}
|
|
|
|
// Request returns the specified data segment by reading it from local disk.
|
|
// Implements the protocol.Model interface.
|
|
func (m *Model) Request(deviceID protocol.DeviceID, folder, name string, offset int64, hash []byte, fromTemporary bool, buf []byte) error {
|
|
if offset < 0 {
|
|
return protocol.ErrInvalid
|
|
}
|
|
|
|
if !m.folderSharedWith(folder, deviceID) {
|
|
l.Warnf("Request from %s for file %s in unshared folder %q", deviceID, name, folder)
|
|
return protocol.ErrNoSuchFile
|
|
}
|
|
if deviceID != protocol.LocalDeviceID {
|
|
l.Debugf("%v REQ(in): %s: %q / %q o=%d s=%d t=%v", m, deviceID, folder, name, offset, len(buf), fromTemporary)
|
|
}
|
|
m.fmut.RLock()
|
|
folderCfg := m.folderCfgs[folder]
|
|
folderPath := folderCfg.Path()
|
|
folderIgnores := m.folderIgnores[folder]
|
|
m.fmut.RUnlock()
|
|
|
|
fn, err := rootedJoinedPath(folderPath, name)
|
|
if err != nil {
|
|
// Request tries to escape!
|
|
l.Debugf("%v Invalid REQ(in) tries to escape: %s: %q / %q o=%d s=%d", m, deviceID, folder, name, offset, len(buf))
|
|
return protocol.ErrInvalid
|
|
}
|
|
|
|
// Having passed the rootedJoinedPath check above, we know "name" is
|
|
// acceptable relative to "folderPath" and in canonical form, so we can
|
|
// trust it.
|
|
|
|
if ignore.IsInternal(name) {
|
|
l.Debugf("%v REQ(in) for internal file: %s: %q / %q o=%d s=%d", m, deviceID, folder, name, offset, len(buf))
|
|
return protocol.ErrNoSuchFile
|
|
}
|
|
|
|
if folderIgnores.Match(name).IsIgnored() {
|
|
l.Debugf("%v REQ(in) for ignored file: %s: %q / %q o=%d s=%d", m, deviceID, folder, name, offset, len(buf))
|
|
return protocol.ErrNoSuchFile
|
|
}
|
|
|
|
if !osutil.IsDir(folderPath, filepath.Dir(name)) {
|
|
l.Debugf("%v REQ(in) for file not in dir: %s: %q / %q o=%d s=%d", m, deviceID, folder, name, offset, len(buf))
|
|
return protocol.ErrNoSuchFile
|
|
}
|
|
|
|
if !osutil.CheckNameConflict(folderPath, name) {
|
|
l.Debugf("%v REQ(in) for file not in dir: %s: %q / %q o=%d s=%d", m, deviceID, folder, name, offset, len(buf))
|
|
return protocol.ErrNoSuchFile
|
|
}
|
|
|
|
// Only check temp files if the flag is set, and if we are set to advertise
|
|
// the temp indexes.
|
|
if fromTemporary && !folderCfg.DisableTempIndexes {
|
|
tempFn := filepath.Join(folderPath, defTempNamer.TempName(name))
|
|
|
|
if info, err := osutil.Lstat(tempFn); err != nil || !info.Mode().IsRegular() {
|
|
// Reject reads for anything that doesn't exist or is something
|
|
// other than a regular file.
|
|
return protocol.ErrNoSuchFile
|
|
}
|
|
|
|
if err := readOffsetIntoBuf(tempFn, offset, buf); err == nil {
|
|
return nil
|
|
}
|
|
// Fall through to reading from a non-temp file, just incase the temp
|
|
// file has finished downloading.
|
|
}
|
|
|
|
if info, err := osutil.Lstat(fn); err != nil || !info.Mode().IsRegular() {
|
|
// Reject reads for anything that doesn't exist or is something
|
|
// other than a regular file.
|
|
return protocol.ErrNoSuchFile
|
|
}
|
|
|
|
err = readOffsetIntoBuf(fn, offset, buf)
|
|
if os.IsNotExist(err) {
|
|
return protocol.ErrNoSuchFile
|
|
} else if err != nil {
|
|
return protocol.ErrGeneric
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (m *Model) CurrentFolderFile(folder string, file string) (protocol.FileInfo, bool) {
|
|
m.fmut.RLock()
|
|
fs, ok := m.folderFiles[folder]
|
|
m.fmut.RUnlock()
|
|
if !ok {
|
|
return protocol.FileInfo{}, false
|
|
}
|
|
return fs.Get(protocol.LocalDeviceID, file)
|
|
}
|
|
|
|
func (m *Model) CurrentGlobalFile(folder string, file string) (protocol.FileInfo, bool) {
|
|
m.fmut.RLock()
|
|
fs, ok := m.folderFiles[folder]
|
|
m.fmut.RUnlock()
|
|
if !ok {
|
|
return protocol.FileInfo{}, false
|
|
}
|
|
return fs.GetGlobal(file)
|
|
}
|
|
|
|
type cFiler struct {
|
|
m *Model
|
|
r string
|
|
}
|
|
|
|
// Implements scanner.CurrentFiler
|
|
func (cf cFiler) CurrentFile(file string) (protocol.FileInfo, bool) {
|
|
return cf.m.CurrentFolderFile(cf.r, file)
|
|
}
|
|
|
|
// ConnectedTo returns true if we are connected to the named device.
|
|
func (m *Model) ConnectedTo(deviceID protocol.DeviceID) bool {
|
|
m.pmut.RLock()
|
|
_, ok := m.conn[deviceID]
|
|
m.pmut.RUnlock()
|
|
if ok {
|
|
m.deviceWasSeen(deviceID)
|
|
}
|
|
return ok
|
|
}
|
|
|
|
func (m *Model) GetIgnores(folder string) ([]string, []string, error) {
|
|
var lines []string
|
|
|
|
m.fmut.RLock()
|
|
cfg, ok := m.folderCfgs[folder]
|
|
m.fmut.RUnlock()
|
|
if !ok {
|
|
return lines, nil, fmt.Errorf("Folder %s does not exist", folder)
|
|
}
|
|
|
|
if !cfg.HasMarker() {
|
|
return lines, nil, fmt.Errorf("Folder %s stopped", folder)
|
|
}
|
|
|
|
fd, err := os.Open(filepath.Join(cfg.Path(), ".stignore"))
|
|
if err != nil {
|
|
if os.IsNotExist(err) {
|
|
return lines, nil, nil
|
|
}
|
|
l.Warnln("Loading .stignore:", err)
|
|
return lines, nil, err
|
|
}
|
|
defer fd.Close()
|
|
|
|
scanner := bufio.NewScanner(fd)
|
|
for scanner.Scan() {
|
|
lines = append(lines, strings.TrimSpace(scanner.Text()))
|
|
}
|
|
|
|
m.fmut.RLock()
|
|
patterns := m.folderIgnores[folder].Patterns()
|
|
m.fmut.RUnlock()
|
|
|
|
return lines, patterns, nil
|
|
}
|
|
|
|
func (m *Model) SetIgnores(folder string, content []string) error {
|
|
cfg, ok := m.folderCfgs[folder]
|
|
if !ok {
|
|
return fmt.Errorf("Folder %s does not exist", folder)
|
|
}
|
|
|
|
path := filepath.Join(cfg.Path(), ".stignore")
|
|
|
|
fd, err := osutil.CreateAtomic(path)
|
|
if err != nil {
|
|
l.Warnln("Saving .stignore:", err)
|
|
return err
|
|
}
|
|
|
|
for _, line := range content {
|
|
fmt.Fprintln(fd, line)
|
|
}
|
|
|
|
if err := fd.Close(); err != nil {
|
|
l.Warnln("Saving .stignore:", err)
|
|
return err
|
|
}
|
|
osutil.HideFile(path)
|
|
|
|
return m.ScanFolder(folder)
|
|
}
|
|
|
|
// OnHello is called when an device connects to us.
|
|
// This allows us to extract some information from the Hello message
|
|
// and add it to a list of known devices ahead of any checks.
|
|
func (m *Model) OnHello(remoteID protocol.DeviceID, addr net.Addr, hello protocol.HelloResult) error {
|
|
if m.cfg.IgnoredDevice(remoteID) {
|
|
return errDeviceIgnored
|
|
}
|
|
|
|
if cfg, ok := m.cfg.Device(remoteID); ok {
|
|
// The device exists
|
|
if cfg.Paused {
|
|
return errDevicePaused
|
|
}
|
|
return nil
|
|
}
|
|
|
|
events.Default.Log(events.DeviceRejected, map[string]string{
|
|
"name": hello.DeviceName,
|
|
"device": remoteID.String(),
|
|
"address": addr.String(),
|
|
})
|
|
|
|
return errDeviceUnknown
|
|
}
|
|
|
|
// GetHello is called when we are about to connect to some remote device.
|
|
func (m *Model) GetHello(protocol.DeviceID) protocol.HelloIntf {
|
|
return &protocol.Hello{
|
|
DeviceName: m.deviceName,
|
|
ClientName: m.clientName,
|
|
ClientVersion: m.clientVersion,
|
|
}
|
|
}
|
|
|
|
// AddConnection adds a new peer connection to the model. An initial index will
|
|
// be sent to the connected peer, thereafter index updates whenever the local
|
|
// folder changes.
|
|
func (m *Model) AddConnection(conn connections.Connection, hello protocol.HelloResult) {
|
|
deviceID := conn.ID()
|
|
|
|
m.pmut.Lock()
|
|
if oldConn, ok := m.conn[deviceID]; ok {
|
|
l.Infoln("Replacing old connection", oldConn, "with", conn, "for", deviceID)
|
|
// There is an existing connection to this device that we are
|
|
// replacing. We must close the existing connection and wait for the
|
|
// close to complete before adding the new connection. We do the
|
|
// actual close without holding pmut as the connection will call
|
|
// back into Closed() for the cleanup.
|
|
closed := m.closed[deviceID]
|
|
m.pmut.Unlock()
|
|
closeRawConn(oldConn)
|
|
<-closed
|
|
m.pmut.Lock()
|
|
}
|
|
|
|
m.conn[deviceID] = conn
|
|
m.closed[deviceID] = make(chan struct{})
|
|
m.deviceDownloads[deviceID] = newDeviceDownloadState()
|
|
|
|
m.helloMessages[deviceID] = hello
|
|
|
|
event := map[string]string{
|
|
"id": deviceID.String(),
|
|
"deviceName": hello.DeviceName,
|
|
"clientName": hello.ClientName,
|
|
"clientVersion": hello.ClientVersion,
|
|
"type": conn.Type(),
|
|
}
|
|
|
|
addr := conn.RemoteAddr()
|
|
if addr != nil {
|
|
event["addr"] = addr.String()
|
|
}
|
|
|
|
events.Default.Log(events.DeviceConnected, event)
|
|
|
|
l.Infof(`Device %s client is "%s %s" named "%s"`, deviceID, hello.ClientName, hello.ClientVersion, hello.DeviceName)
|
|
|
|
conn.Start()
|
|
m.pmut.Unlock()
|
|
|
|
// Acquires fmut, so has to be done outside of pmut.
|
|
cm := m.generateClusterConfig(deviceID)
|
|
conn.ClusterConfig(cm)
|
|
|
|
device, ok := m.cfg.Devices()[deviceID]
|
|
if ok && (device.Name == "" || m.cfg.Options().OverwriteRemoteDevNames) {
|
|
device.Name = hello.DeviceName
|
|
m.cfg.SetDevice(device)
|
|
m.cfg.Save()
|
|
}
|
|
|
|
m.deviceWasSeen(deviceID)
|
|
}
|
|
|
|
func (m *Model) DownloadProgress(device protocol.DeviceID, folder string, updates []protocol.FileDownloadProgressUpdate) {
|
|
if !m.folderSharedWith(folder, device) {
|
|
return
|
|
}
|
|
|
|
m.fmut.RLock()
|
|
cfg, ok := m.folderCfgs[folder]
|
|
m.fmut.RUnlock()
|
|
|
|
if !ok || cfg.Type == config.FolderTypeSendOnly || cfg.DisableTempIndexes {
|
|
return
|
|
}
|
|
|
|
m.pmut.RLock()
|
|
m.deviceDownloads[device].Update(folder, updates)
|
|
state := m.deviceDownloads[device].GetBlockCounts(folder)
|
|
m.pmut.RUnlock()
|
|
|
|
events.Default.Log(events.RemoteDownloadProgress, map[string]interface{}{
|
|
"device": device.String(),
|
|
"folder": folder,
|
|
"state": state,
|
|
})
|
|
}
|
|
|
|
func (m *Model) deviceStatRef(deviceID protocol.DeviceID) *stats.DeviceStatisticsReference {
|
|
m.fmut.Lock()
|
|
defer m.fmut.Unlock()
|
|
|
|
if sr, ok := m.deviceStatRefs[deviceID]; ok {
|
|
return sr
|
|
}
|
|
|
|
sr := stats.NewDeviceStatisticsReference(m.db, deviceID.String())
|
|
m.deviceStatRefs[deviceID] = sr
|
|
return sr
|
|
}
|
|
|
|
func (m *Model) deviceWasSeen(deviceID protocol.DeviceID) {
|
|
m.deviceStatRef(deviceID).WasSeen()
|
|
}
|
|
|
|
func (m *Model) folderStatRef(folder string) *stats.FolderStatisticsReference {
|
|
m.fmut.Lock()
|
|
defer m.fmut.Unlock()
|
|
|
|
sr, ok := m.folderStatRefs[folder]
|
|
if !ok {
|
|
sr = stats.NewFolderStatisticsReference(m.db, folder)
|
|
m.folderStatRefs[folder] = sr
|
|
}
|
|
return sr
|
|
}
|
|
|
|
func (m *Model) receivedFile(folder string, file protocol.FileInfo) {
|
|
m.folderStatRef(folder).ReceivedFile(file.Name, file.IsDeleted())
|
|
}
|
|
|
|
func sendIndexes(conn protocol.Connection, folder string, fs *db.FileSet, ignores *ignore.Matcher, startSequence int64, dbLocation string, dropSymlinks bool) {
|
|
deviceID := conn.ID()
|
|
name := conn.Name()
|
|
var err error
|
|
|
|
l.Debugf("sendIndexes for %s-%s/%q starting (slv=%d)", deviceID, name, folder, startSequence)
|
|
defer l.Debugf("sendIndexes for %s-%s/%q exiting: %v", deviceID, name, folder, err)
|
|
|
|
minSequence, err := sendIndexTo(startSequence, conn, folder, fs, ignores, dbLocation, dropSymlinks)
|
|
|
|
// Subscribe to LocalIndexUpdated (we have new information to send) and
|
|
// DeviceDisconnected (it might be us who disconnected, so we should
|
|
// exit).
|
|
sub := events.Default.Subscribe(events.LocalIndexUpdated | events.DeviceDisconnected)
|
|
defer events.Default.Unsubscribe(sub)
|
|
|
|
for err == nil {
|
|
if conn.Closed() {
|
|
// Our work is done.
|
|
return
|
|
}
|
|
|
|
// While we have sent a sequence at least equal to the one
|
|
// currently in the database, wait for the local index to update. The
|
|
// local index may update for other folders than the one we are
|
|
// sending for.
|
|
if fs.Sequence(protocol.LocalDeviceID) <= minSequence {
|
|
sub.Poll(time.Minute)
|
|
continue
|
|
}
|
|
|
|
minSequence, err = sendIndexTo(minSequence, conn, folder, fs, ignores, dbLocation, dropSymlinks)
|
|
|
|
// Wait a short amount of time before entering the next loop. If there
|
|
// are continuous changes happening to the local index, this gives us
|
|
// time to batch them up a little.
|
|
time.Sleep(250 * time.Millisecond)
|
|
}
|
|
}
|
|
|
|
func sendIndexTo(minSequence int64, conn protocol.Connection, folder string, fs *db.FileSet, ignores *ignore.Matcher, dbLocation string, dropSymlinks bool) (int64, error) {
|
|
deviceID := conn.ID()
|
|
name := conn.Name()
|
|
batch := make([]protocol.FileInfo, 0, indexBatchSize)
|
|
currentBatchSize := 0
|
|
initial := minSequence == 0
|
|
maxSequence := minSequence
|
|
var err error
|
|
|
|
sorter := NewIndexSorter(dbLocation)
|
|
defer sorter.Close()
|
|
|
|
fs.WithHave(protocol.LocalDeviceID, func(fi db.FileIntf) bool {
|
|
f := fi.(protocol.FileInfo)
|
|
if f.Sequence <= minSequence {
|
|
return true
|
|
}
|
|
|
|
if f.Sequence > maxSequence {
|
|
maxSequence = f.Sequence
|
|
}
|
|
|
|
if dropSymlinks && f.IsSymlink() {
|
|
// Do not send index entries with symlinks to clients that can't
|
|
// handle it. Fixes issue #3802. Once both sides are upgraded, a
|
|
// rescan (i.e., change) of the symlink is required for it to
|
|
// sync again, due to delta indexes.
|
|
return true
|
|
}
|
|
|
|
sorter.Append(f)
|
|
return true
|
|
})
|
|
|
|
sorter.Sorted(func(f protocol.FileInfo) bool {
|
|
if len(batch) == indexBatchSize || currentBatchSize > indexTargetSize {
|
|
if initial {
|
|
if err = conn.Index(folder, batch); err != nil {
|
|
return false
|
|
}
|
|
l.Debugf("sendIndexes for %s-%s/%q: %d files (<%d bytes) (initial index)", deviceID, name, folder, len(batch), currentBatchSize)
|
|
initial = false
|
|
} else {
|
|
if err = conn.IndexUpdate(folder, batch); err != nil {
|
|
return false
|
|
}
|
|
l.Debugf("sendIndexes for %s-%s/%q: %d files (<%d bytes) (batched update)", deviceID, name, folder, len(batch), currentBatchSize)
|
|
}
|
|
|
|
batch = make([]protocol.FileInfo, 0, indexBatchSize)
|
|
currentBatchSize = 0
|
|
}
|
|
|
|
batch = append(batch, f)
|
|
currentBatchSize += f.ProtoSize()
|
|
return true
|
|
})
|
|
|
|
if initial && err == nil {
|
|
err = conn.Index(folder, batch)
|
|
if err == nil {
|
|
l.Debugf("sendIndexes for %s-%s/%q: %d files (small initial index)", deviceID, name, folder, len(batch))
|
|
}
|
|
} else if len(batch) > 0 && err == nil {
|
|
err = conn.IndexUpdate(folder, batch)
|
|
if err == nil {
|
|
l.Debugf("sendIndexes for %s-%s/%q: %d files (last batch)", deviceID, name, folder, len(batch))
|
|
}
|
|
}
|
|
|
|
return maxSequence, err
|
|
}
|
|
|
|
func (m *Model) updateLocalsFromScanning(folder string, fs []protocol.FileInfo) {
|
|
m.updateLocals(folder, fs)
|
|
|
|
m.fmut.RLock()
|
|
folderCfg := m.folderCfgs[folder]
|
|
m.fmut.RUnlock()
|
|
|
|
m.diskChangeDetected(folderCfg, fs, events.LocalChangeDetected)
|
|
}
|
|
|
|
func (m *Model) updateLocalsFromPulling(folder string, fs []protocol.FileInfo) {
|
|
m.updateLocals(folder, fs)
|
|
|
|
m.fmut.RLock()
|
|
folderCfg := m.folderCfgs[folder]
|
|
m.fmut.RUnlock()
|
|
|
|
m.diskChangeDetected(folderCfg, fs, events.RemoteChangeDetected)
|
|
}
|
|
|
|
func (m *Model) updateLocals(folder string, fs []protocol.FileInfo) {
|
|
m.fmut.RLock()
|
|
files := m.folderFiles[folder]
|
|
m.fmut.RUnlock()
|
|
if files == nil {
|
|
// The folder doesn't exist.
|
|
return
|
|
}
|
|
files.Update(protocol.LocalDeviceID, fs)
|
|
|
|
filenames := make([]string, len(fs))
|
|
for i, file := range fs {
|
|
filenames[i] = file.Name
|
|
}
|
|
|
|
events.Default.Log(events.LocalIndexUpdated, map[string]interface{}{
|
|
"folder": folder,
|
|
"items": len(fs),
|
|
"filenames": filenames,
|
|
"version": files.Sequence(protocol.LocalDeviceID),
|
|
})
|
|
}
|
|
|
|
func (m *Model) diskChangeDetected(folderCfg config.FolderConfiguration, files []protocol.FileInfo, typeOfEvent events.EventType) {
|
|
path := strings.Replace(folderCfg.Path(), `\\?\`, "", 1)
|
|
|
|
for _, file := range files {
|
|
objType := "file"
|
|
action := "modified"
|
|
|
|
// If our local vector is version 1 AND it is the only version
|
|
// vector so far seen for this file then it is a new file. Else if
|
|
// it is > 1 it's not new, and if it is 1 but another shortId
|
|
// version vector exists then it is new for us but created elsewhere
|
|
// so the file is still not new but modified by us. Only if it is
|
|
// truly new do we change this to 'added', else we leave it as
|
|
// 'modified'.
|
|
if len(file.Version.Counters) == 1 && file.Version.Counters[0].Value == 1 {
|
|
action = "added"
|
|
}
|
|
|
|
if file.IsDirectory() {
|
|
objType = "dir"
|
|
}
|
|
if file.IsDeleted() {
|
|
action = "deleted"
|
|
}
|
|
|
|
// The full file path, adjusted to the local path separator character. Also
|
|
// for windows paths, strip unwanted chars from the front.
|
|
path := filepath.Join(path, filepath.FromSlash(file.Name))
|
|
|
|
// Two different events can be fired here based on what EventType is passed into function
|
|
events.Default.Log(typeOfEvent, map[string]string{
|
|
"folderID": folderCfg.ID,
|
|
"label": folderCfg.Label,
|
|
"action": action,
|
|
"type": objType,
|
|
"path": path,
|
|
"modifiedBy": file.ModifiedBy.String(),
|
|
})
|
|
}
|
|
}
|
|
|
|
func (m *Model) requestGlobal(deviceID protocol.DeviceID, folder, name string, offset int64, size int, hash []byte, fromTemporary bool) ([]byte, error) {
|
|
m.pmut.RLock()
|
|
nc, ok := m.conn[deviceID]
|
|
m.pmut.RUnlock()
|
|
|
|
if !ok {
|
|
return nil, fmt.Errorf("requestGlobal: no such device: %s", deviceID)
|
|
}
|
|
|
|
l.Debugf("%v REQ(out): %s: %q / %q o=%d s=%d h=%x ft=%t", m, deviceID, folder, name, offset, size, hash, fromTemporary)
|
|
|
|
return nc.Request(folder, name, offset, size, hash, fromTemporary)
|
|
}
|
|
|
|
func (m *Model) ScanFolders() map[string]error {
|
|
m.fmut.RLock()
|
|
folders := make([]string, 0, len(m.folderCfgs))
|
|
for folder := range m.folderCfgs {
|
|
folders = append(folders, folder)
|
|
}
|
|
m.fmut.RUnlock()
|
|
|
|
errors := make(map[string]error, len(m.folderCfgs))
|
|
errorsMut := sync.NewMutex()
|
|
|
|
wg := sync.NewWaitGroup()
|
|
wg.Add(len(folders))
|
|
for _, folder := range folders {
|
|
folder := folder
|
|
go func() {
|
|
err := m.ScanFolder(folder)
|
|
if err != nil {
|
|
errorsMut.Lock()
|
|
errors[folder] = err
|
|
errorsMut.Unlock()
|
|
|
|
// Potentially sets the error twice, once in the scanner just
|
|
// by doing a check, and once here, if the error returned is
|
|
// the same one as returned by CheckFolderHealth, though
|
|
// duplicate set is handled by setError.
|
|
m.fmut.RLock()
|
|
srv := m.folderRunners[folder]
|
|
m.fmut.RUnlock()
|
|
srv.setError(err)
|
|
}
|
|
wg.Done()
|
|
}()
|
|
}
|
|
wg.Wait()
|
|
return errors
|
|
}
|
|
|
|
func (m *Model) ScanFolder(folder string) error {
|
|
return m.ScanFolderSubdirs(folder, nil)
|
|
}
|
|
|
|
func (m *Model) ScanFolderSubdirs(folder string, subs []string) error {
|
|
m.fmut.Lock()
|
|
runner, ok := m.folderRunners[folder]
|
|
m.fmut.Unlock()
|
|
|
|
// Folders are added to folderRunners only when they are started. We can't
|
|
// scan them before they have started, so that's what we need to check for
|
|
// here.
|
|
if !ok {
|
|
return errors.New("no such folder")
|
|
}
|
|
|
|
return runner.Scan(subs)
|
|
}
|
|
|
|
func (m *Model) internalScanFolderSubdirs(folder string, subDirs []string) error {
|
|
for i := 0; i < len(subDirs); i++ {
|
|
sub := osutil.NativeFilename(subDirs[i])
|
|
|
|
if sub == "" {
|
|
// A blank subdirs means to scan the entire folder. We can trim
|
|
// the subDirs list and go on our way.
|
|
subDirs = nil
|
|
break
|
|
}
|
|
|
|
// We test each path by joining with "root". What we join with is
|
|
// not relevant, we just want the dotdot escape detection here. For
|
|
// historical reasons we may get paths that end in a slash. We
|
|
// remove that first to allow the rootedJoinedPath to pass.
|
|
sub = strings.TrimRight(sub, string(os.PathSeparator))
|
|
if _, err := rootedJoinedPath("root", sub); err != nil {
|
|
return errors.New("invalid subpath")
|
|
}
|
|
subDirs[i] = sub
|
|
}
|
|
|
|
m.fmut.Lock()
|
|
fs := m.folderFiles[folder]
|
|
folderCfg := m.folderCfgs[folder]
|
|
ignores := m.folderIgnores[folder]
|
|
runner, ok := m.folderRunners[folder]
|
|
m.fmut.Unlock()
|
|
mtimefs := fs.MtimeFS()
|
|
|
|
// Check if the ignore patterns changed as part of scanning this folder.
|
|
// If they did we should schedule a pull of the folder so that we
|
|
// request things we might have suddenly become unignored and so on.
|
|
|
|
oldHash := ignores.Hash()
|
|
defer func() {
|
|
if ignores.Hash() != oldHash {
|
|
l.Debugln("Folder", folder, "ignore patterns changed; triggering puller")
|
|
runner.IndexUpdated()
|
|
}
|
|
}()
|
|
|
|
// Folders are added to folderRunners only when they are started. We can't
|
|
// scan them before they have started, so that's what we need to check for
|
|
// here.
|
|
if !ok {
|
|
return errors.New("no such folder")
|
|
}
|
|
|
|
if err := m.CheckFolderHealth(folder); err != nil {
|
|
runner.setError(err)
|
|
l.Infof("Stopping folder %s due to error: %s", folderCfg.Description(), err)
|
|
return err
|
|
}
|
|
|
|
if err := ignores.Load(filepath.Join(folderCfg.Path(), ".stignore")); err != nil && !os.IsNotExist(err) {
|
|
err = fmt.Errorf("loading ignores: %v", err)
|
|
runner.setError(err)
|
|
l.Infof("Stopping folder %s due to error: %s", folderCfg.Description(), err)
|
|
return err
|
|
}
|
|
|
|
// Clean the list of subitems to ensure that we start at a known
|
|
// directory, and don't scan subdirectories of things we've already
|
|
// scanned.
|
|
subDirs = unifySubs(subDirs, func(f string) bool {
|
|
_, ok := fs.Get(protocol.LocalDeviceID, f)
|
|
return ok
|
|
})
|
|
|
|
// The cancel channel is closed whenever we return (such as from an error),
|
|
// to signal the potentially still running walker to stop.
|
|
cancel := make(chan struct{})
|
|
defer close(cancel)
|
|
|
|
runner.setState(FolderScanning)
|
|
|
|
fchan, err := scanner.Walk(scanner.Config{
|
|
Folder: folderCfg.ID,
|
|
Dir: folderCfg.Path(),
|
|
Subs: subDirs,
|
|
Matcher: ignores,
|
|
BlockSize: protocol.BlockSize,
|
|
TempNamer: defTempNamer,
|
|
TempLifetime: time.Duration(m.cfg.Options().KeepTemporariesH) * time.Hour,
|
|
CurrentFiler: cFiler{m, folder},
|
|
Lstater: mtimefs,
|
|
IgnorePerms: folderCfg.IgnorePerms,
|
|
AutoNormalize: folderCfg.AutoNormalize,
|
|
Hashers: m.numHashers(folder),
|
|
ShortID: m.shortID,
|
|
ProgressTickIntervalS: folderCfg.ScanProgressIntervalS,
|
|
Cancel: cancel,
|
|
})
|
|
|
|
if err != nil {
|
|
// The error we get here is likely an OS level error, which might not be
|
|
// as readable as our health check errors. Check if we can get a health
|
|
// check error first, and use that if it's available.
|
|
if ferr := m.CheckFolderHealth(folder); ferr != nil {
|
|
err = ferr
|
|
}
|
|
runner.setError(err)
|
|
return err
|
|
}
|
|
|
|
batchSizeFiles := 100
|
|
batchSizeBlocks := 2048 // about 256 MB
|
|
|
|
batch := make([]protocol.FileInfo, 0, batchSizeFiles)
|
|
blocksHandled := 0
|
|
|
|
for f := range fchan {
|
|
if len(batch) == batchSizeFiles || blocksHandled > batchSizeBlocks {
|
|
if err := m.CheckFolderHealth(folder); err != nil {
|
|
l.Infof("Stopping folder %s mid-scan due to folder error: %s", folderCfg.Description(), err)
|
|
return err
|
|
}
|
|
m.updateLocalsFromScanning(folder, batch)
|
|
batch = batch[:0]
|
|
blocksHandled = 0
|
|
}
|
|
batch = append(batch, f)
|
|
blocksHandled += len(f.Blocks)
|
|
}
|
|
|
|
if err := m.CheckFolderHealth(folder); err != nil {
|
|
l.Infof("Stopping folder %s mid-scan due to folder error: %s", folderCfg.Description(), err)
|
|
return err
|
|
} else if len(batch) > 0 {
|
|
m.updateLocalsFromScanning(folder, batch)
|
|
}
|
|
|
|
if len(subDirs) == 0 {
|
|
// If we have no specific subdirectories to traverse, set it to one
|
|
// empty prefix so we traverse the entire folder contents once.
|
|
subDirs = []string{""}
|
|
}
|
|
|
|
// Do a scan of the database for each prefix, to check for deleted and
|
|
// ignored files.
|
|
batch = batch[:0]
|
|
for _, sub := range subDirs {
|
|
var iterError error
|
|
|
|
fs.WithPrefixedHaveTruncated(protocol.LocalDeviceID, sub, func(fi db.FileIntf) bool {
|
|
f := fi.(db.FileInfoTruncated)
|
|
if len(batch) == batchSizeFiles {
|
|
if err := m.CheckFolderHealth(folder); err != nil {
|
|
iterError = err
|
|
return false
|
|
}
|
|
m.updateLocalsFromScanning(folder, batch)
|
|
batch = batch[:0]
|
|
}
|
|
|
|
switch {
|
|
case !f.IsInvalid() && (ignores.Match(f.Name).IsIgnored() || symlinkInvalid(folder, f)):
|
|
// File was valid at last pass but has been ignored or is an
|
|
// unsupported symlink. Set invalid bit.
|
|
l.Debugln("setting invalid bit on ignored", f)
|
|
nf := protocol.FileInfo{
|
|
Name: f.Name,
|
|
Type: f.Type,
|
|
Size: f.Size,
|
|
ModifiedS: f.ModifiedS,
|
|
ModifiedNs: f.ModifiedNs,
|
|
ModifiedBy: m.id.Short(),
|
|
Permissions: f.Permissions,
|
|
NoPermissions: f.NoPermissions,
|
|
Invalid: true,
|
|
Version: f.Version, // The file is still the same, so don't bump version
|
|
}
|
|
batch = append(batch, nf)
|
|
|
|
case !f.IsInvalid() && !f.IsDeleted():
|
|
// The file is valid and not deleted. Lets check if it's
|
|
// still here.
|
|
|
|
var exists bool
|
|
if !osutil.IsDir(folderCfg.Path(), filepath.Dir(f.Name)) {
|
|
exists = false
|
|
} else if !osutil.CheckNameConflict(folderCfg.Path(), f.Name) {
|
|
exists = false
|
|
} else if _, err := mtimefs.Lstat(filepath.Join(folderCfg.Path(), f.Name)); err != nil {
|
|
// We don't specifically verify that the error is
|
|
// os.IsNotExist because there is a corner case when a
|
|
// directory is suddenly transformed into a file. When that
|
|
// happens, files that were in the directory (that is now a
|
|
// file) are deleted but will return a confusing error ("not a
|
|
// directory") when we try to Lstat() them.
|
|
|
|
exists = false
|
|
} else {
|
|
exists = true
|
|
}
|
|
if !exists {
|
|
nf := protocol.FileInfo{
|
|
Name: f.Name,
|
|
Type: f.Type,
|
|
Size: 0,
|
|
ModifiedS: f.ModifiedS,
|
|
ModifiedNs: f.ModifiedNs,
|
|
ModifiedBy: m.id.Short(),
|
|
Deleted: true,
|
|
Version: f.Version.Update(m.shortID),
|
|
}
|
|
|
|
batch = append(batch, nf)
|
|
}
|
|
}
|
|
return true
|
|
})
|
|
|
|
if iterError != nil {
|
|
l.Infof("Stopping folder %s mid-scan due to folder error: %s", folderCfg.Description(), iterError)
|
|
return iterError
|
|
}
|
|
}
|
|
|
|
if err := m.CheckFolderHealth(folder); err != nil {
|
|
l.Infof("Stopping folder %s mid-scan due to folder error: %s", folderCfg.Description(), err)
|
|
return err
|
|
} else if len(batch) > 0 {
|
|
m.updateLocalsFromScanning(folder, batch)
|
|
}
|
|
|
|
m.folderStatRef(folder).ScanCompleted()
|
|
runner.setState(FolderIdle)
|
|
return nil
|
|
}
|
|
|
|
func (m *Model) DelayScan(folder string, next time.Duration) {
|
|
m.fmut.Lock()
|
|
runner, ok := m.folderRunners[folder]
|
|
m.fmut.Unlock()
|
|
if !ok {
|
|
return
|
|
}
|
|
runner.DelayScan(next)
|
|
}
|
|
|
|
// numHashers returns the number of hasher routines to use for a given folder,
|
|
// taking into account configuration and available CPU cores.
|
|
func (m *Model) numHashers(folder string) int {
|
|
m.fmut.Lock()
|
|
folderCfg := m.folderCfgs[folder]
|
|
numFolders := len(m.folderCfgs)
|
|
m.fmut.Unlock()
|
|
|
|
if folderCfg.Hashers > 0 {
|
|
// Specific value set in the config, use that.
|
|
return folderCfg.Hashers
|
|
}
|
|
|
|
if runtime.GOOS == "windows" || runtime.GOOS == "darwin" {
|
|
// Interactive operating systems; don't load the system too heavily by
|
|
// default.
|
|
return 1
|
|
}
|
|
|
|
// For other operating systems and architectures, lets try to get some
|
|
// work done... Divide the available CPU cores among the configured
|
|
// folders.
|
|
if perFolder := runtime.GOMAXPROCS(-1) / numFolders; perFolder > 0 {
|
|
return perFolder
|
|
}
|
|
|
|
return 1
|
|
}
|
|
|
|
// generateClusterConfig returns a ClusterConfigMessage that is correct for
|
|
// the given peer device
|
|
func (m *Model) generateClusterConfig(device protocol.DeviceID) protocol.ClusterConfig {
|
|
var message protocol.ClusterConfig
|
|
|
|
m.fmut.RLock()
|
|
// The list of folders in the message is sorted, so we always get the
|
|
// same order.
|
|
folders := m.deviceFolders[device]
|
|
sort.Strings(folders)
|
|
|
|
for _, folder := range folders {
|
|
folderCfg := m.cfg.Folders()[folder]
|
|
fs := m.folderFiles[folder]
|
|
|
|
protocolFolder := protocol.Folder{
|
|
ID: folder,
|
|
Label: folderCfg.Label,
|
|
ReadOnly: folderCfg.Type == config.FolderTypeSendOnly,
|
|
IgnorePermissions: folderCfg.IgnorePerms,
|
|
IgnoreDelete: folderCfg.IgnoreDelete,
|
|
DisableTempIndexes: folderCfg.DisableTempIndexes,
|
|
Paused: folderCfg.Paused,
|
|
}
|
|
|
|
// Devices are sorted, so we always get the same order.
|
|
for _, device := range m.folderDevices.sortedDevices(folder) {
|
|
deviceCfg := m.cfg.Devices()[device]
|
|
|
|
var indexID protocol.IndexID
|
|
var maxSequence int64
|
|
if device == m.id {
|
|
indexID = fs.IndexID(protocol.LocalDeviceID)
|
|
maxSequence = fs.Sequence(protocol.LocalDeviceID)
|
|
} else {
|
|
indexID = fs.IndexID(device)
|
|
maxSequence = fs.Sequence(device)
|
|
}
|
|
|
|
protocolDevice := protocol.Device{
|
|
ID: device,
|
|
Name: deviceCfg.Name,
|
|
Addresses: deviceCfg.Addresses,
|
|
Compression: deviceCfg.Compression,
|
|
CertName: deviceCfg.CertName,
|
|
Introducer: deviceCfg.Introducer,
|
|
IndexID: indexID,
|
|
MaxSequence: maxSequence,
|
|
}
|
|
|
|
protocolFolder.Devices = append(protocolFolder.Devices, protocolDevice)
|
|
}
|
|
message.Folders = append(message.Folders, protocolFolder)
|
|
}
|
|
m.fmut.RUnlock()
|
|
|
|
return message
|
|
}
|
|
|
|
func (m *Model) State(folder string) (string, time.Time, error) {
|
|
m.fmut.RLock()
|
|
runner, ok := m.folderRunners[folder]
|
|
m.fmut.RUnlock()
|
|
if !ok {
|
|
// The returned error should be an actual folder error, so returning
|
|
// errors.New("does not exist") or similar here would be
|
|
// inappropriate.
|
|
return "", time.Time{}, nil
|
|
}
|
|
state, changed, err := runner.getState()
|
|
return state.String(), changed, err
|
|
}
|
|
|
|
func (m *Model) Override(folder string) {
|
|
m.fmut.RLock()
|
|
fs, ok := m.folderFiles[folder]
|
|
runner := m.folderRunners[folder]
|
|
m.fmut.RUnlock()
|
|
if !ok {
|
|
return
|
|
}
|
|
|
|
runner.setState(FolderScanning)
|
|
batch := make([]protocol.FileInfo, 0, indexBatchSize)
|
|
fs.WithNeed(protocol.LocalDeviceID, func(fi db.FileIntf) bool {
|
|
need := fi.(protocol.FileInfo)
|
|
if len(batch) == indexBatchSize {
|
|
m.updateLocalsFromScanning(folder, batch)
|
|
batch = batch[:0]
|
|
}
|
|
|
|
have, ok := fs.Get(protocol.LocalDeviceID, need.Name)
|
|
if !ok || have.Name != need.Name {
|
|
// We are missing the file
|
|
need.Deleted = true
|
|
need.Blocks = nil
|
|
need.Version = need.Version.Update(m.shortID)
|
|
need.Size = 0
|
|
} else {
|
|
// We have the file, replace with our version
|
|
have.Version = have.Version.Merge(need.Version).Update(m.shortID)
|
|
need = have
|
|
}
|
|
need.Sequence = 0
|
|
batch = append(batch, need)
|
|
return true
|
|
})
|
|
if len(batch) > 0 {
|
|
m.updateLocalsFromScanning(folder, batch)
|
|
}
|
|
runner.setState(FolderIdle)
|
|
}
|
|
|
|
// CurrentSequence returns the change version for the given folder.
|
|
// This is guaranteed to increment if the contents of the local folder has
|
|
// changed.
|
|
func (m *Model) CurrentSequence(folder string) (int64, bool) {
|
|
m.fmut.RLock()
|
|
fs, ok := m.folderFiles[folder]
|
|
m.fmut.RUnlock()
|
|
if !ok {
|
|
// The folder might not exist, since this can be called with a user
|
|
// specified folder name from the REST interface.
|
|
return 0, false
|
|
}
|
|
|
|
return fs.Sequence(protocol.LocalDeviceID), true
|
|
}
|
|
|
|
// RemoteSequence returns the change version for the given folder, as
|
|
// sent by remote peers. This is guaranteed to increment if the contents of
|
|
// the remote or global folder has changed.
|
|
func (m *Model) RemoteSequence(folder string) (int64, bool) {
|
|
m.fmut.RLock()
|
|
defer m.fmut.RUnlock()
|
|
|
|
fs, ok := m.folderFiles[folder]
|
|
if !ok {
|
|
// The folder might not exist, since this can be called with a user
|
|
// specified folder name from the REST interface.
|
|
return 0, false
|
|
}
|
|
|
|
var ver int64
|
|
for device := range m.folderDevices[folder] {
|
|
ver += fs.Sequence(device)
|
|
}
|
|
|
|
return ver, true
|
|
}
|
|
|
|
func (m *Model) GlobalDirectoryTree(folder, prefix string, levels int, dirsonly bool) map[string]interface{} {
|
|
m.fmut.RLock()
|
|
files, ok := m.folderFiles[folder]
|
|
m.fmut.RUnlock()
|
|
if !ok {
|
|
return nil
|
|
}
|
|
|
|
output := make(map[string]interface{})
|
|
sep := string(filepath.Separator)
|
|
prefix = osutil.NativeFilename(prefix)
|
|
|
|
if prefix != "" && !strings.HasSuffix(prefix, sep) {
|
|
prefix = prefix + sep
|
|
}
|
|
|
|
files.WithPrefixedGlobalTruncated(prefix, func(fi db.FileIntf) bool {
|
|
f := fi.(db.FileInfoTruncated)
|
|
|
|
if f.IsInvalid() || f.IsDeleted() || f.Name == prefix {
|
|
return true
|
|
}
|
|
|
|
f.Name = strings.Replace(f.Name, prefix, "", 1)
|
|
|
|
var dir, base string
|
|
if f.IsDirectory() && !f.IsSymlink() {
|
|
dir = f.Name
|
|
} else {
|
|
dir = filepath.Dir(f.Name)
|
|
base = filepath.Base(f.Name)
|
|
}
|
|
|
|
if levels > -1 && strings.Count(f.Name, sep) > levels {
|
|
return true
|
|
}
|
|
|
|
last := output
|
|
if dir != "." {
|
|
for _, path := range strings.Split(dir, sep) {
|
|
directory, ok := last[path]
|
|
if !ok {
|
|
newdir := make(map[string]interface{})
|
|
last[path] = newdir
|
|
last = newdir
|
|
} else {
|
|
last = directory.(map[string]interface{})
|
|
}
|
|
}
|
|
}
|
|
|
|
if !dirsonly && base != "" {
|
|
last[base] = []interface{}{
|
|
f.ModTime(), f.FileSize(),
|
|
}
|
|
}
|
|
|
|
return true
|
|
})
|
|
|
|
return output
|
|
}
|
|
|
|
func (m *Model) Availability(folder, file string, version protocol.Vector, block protocol.BlockInfo) []Availability {
|
|
// The slightly unusual locking sequence here is because we need to hold
|
|
// pmut for the duration (as the value returned from foldersFiles can
|
|
// get heavily modified on Close()), but also must acquire fmut before
|
|
// pmut. (The locks can be *released* in any order.)
|
|
m.fmut.RLock()
|
|
m.pmut.RLock()
|
|
defer m.pmut.RUnlock()
|
|
|
|
fs, ok := m.folderFiles[folder]
|
|
devices := m.folderDevices[folder]
|
|
m.fmut.RUnlock()
|
|
|
|
if !ok {
|
|
return nil
|
|
}
|
|
|
|
var availabilities []Availability
|
|
next:
|
|
for _, device := range fs.Availability(file) {
|
|
for _, pausedFolder := range m.remotePausedFolders[device] {
|
|
if pausedFolder == folder {
|
|
continue next
|
|
}
|
|
}
|
|
_, ok := m.conn[device]
|
|
if ok {
|
|
availabilities = append(availabilities, Availability{ID: device, FromTemporary: false})
|
|
}
|
|
}
|
|
|
|
for device := range devices {
|
|
if m.deviceDownloads[device].Has(folder, file, version, int32(block.Offset/protocol.BlockSize)) {
|
|
availabilities = append(availabilities, Availability{ID: device, FromTemporary: true})
|
|
}
|
|
}
|
|
|
|
return availabilities
|
|
}
|
|
|
|
// BringToFront bumps the given files priority in the job queue.
|
|
func (m *Model) BringToFront(folder, file string) {
|
|
m.pmut.RLock()
|
|
defer m.pmut.RUnlock()
|
|
|
|
runner, ok := m.folderRunners[folder]
|
|
if ok {
|
|
runner.BringToFront(file)
|
|
}
|
|
}
|
|
|
|
// CheckFolderHealth checks the folder for common errors and returns the
|
|
// current folder error, or nil if the folder is healthy.
|
|
func (m *Model) CheckFolderHealth(id string) error {
|
|
folder, ok := m.cfg.Folders()[id]
|
|
if !ok {
|
|
return errors.New("folder does not exist")
|
|
}
|
|
|
|
// Check for folder errors, with the most serious and specific first and
|
|
// generic ones like out of space on the home disk later. Note the
|
|
// inverted error flow (err==nil checks) here.
|
|
|
|
err := m.checkFolderPath(folder)
|
|
if err == nil {
|
|
err = m.checkFolderFreeSpace(folder)
|
|
}
|
|
if err == nil {
|
|
err = m.checkHomeDiskFree()
|
|
}
|
|
|
|
// Set or clear the error on the runner, which also does logging and
|
|
// generates events and stuff.
|
|
m.runnerExchangeError(folder, err)
|
|
|
|
return err
|
|
}
|
|
|
|
// checkFolderPath returns nil if the folder path exists and has the marker file.
|
|
func (m *Model) checkFolderPath(folder config.FolderConfiguration) error {
|
|
if folder.Path() == "" {
|
|
return errFolderPathEmpty
|
|
}
|
|
|
|
if fi, err := os.Stat(folder.Path()); err != nil || !fi.IsDir() {
|
|
return errFolderPathMissing
|
|
}
|
|
|
|
if !folder.HasMarker() {
|
|
return errFolderMarkerMissing
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// checkFolderFreeSpace returns nil if the folder has the required amount of
|
|
// free space, or if folder free space checking is disabled.
|
|
func (m *Model) checkFolderFreeSpace(folder config.FolderConfiguration) error {
|
|
if folder.MinDiskFreePct <= 0 {
|
|
return nil
|
|
}
|
|
|
|
free, err := osutil.DiskFreePercentage(folder.Path())
|
|
if err == nil && free < folder.MinDiskFreePct {
|
|
return errFolderNoSpace
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// checkHomeDiskFree returns nil if the home disk has the required amount of
|
|
// free space, or if home disk free space checking is disabled.
|
|
func (m *Model) checkHomeDiskFree() error {
|
|
minFree := m.cfg.Options().MinHomeDiskFreePct
|
|
if minFree <= 0 {
|
|
return nil
|
|
}
|
|
|
|
free, err := osutil.DiskFreePercentage(m.cfg.ConfigPath())
|
|
if err == nil && free < minFree {
|
|
return errHomeDiskNoSpace
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// runnerExchangeError sets the given error (which way be nil) on the folder
|
|
// runner. If the error differs from any previous error, logging and events
|
|
// happen.
|
|
func (m *Model) runnerExchangeError(folder config.FolderConfiguration, err error) {
|
|
m.fmut.RLock()
|
|
runner, runnerExists := m.folderRunners[folder.ID]
|
|
m.fmut.RUnlock()
|
|
|
|
var oldErr error
|
|
if runnerExists {
|
|
_, _, oldErr = runner.getState()
|
|
}
|
|
|
|
if err != nil {
|
|
if oldErr != nil && oldErr.Error() != err.Error() {
|
|
l.Infof("Folder %s error changed: %q -> %q", folder.Description(), oldErr, err)
|
|
} else if oldErr == nil {
|
|
l.Warnf("Stopping folder %s - %v", folder.Description(), err)
|
|
}
|
|
if runnerExists {
|
|
runner.setError(err)
|
|
}
|
|
} else if oldErr != nil {
|
|
l.Infof("Folder %q error is cleared, restarting", folder.ID)
|
|
if runnerExists {
|
|
runner.clearError()
|
|
}
|
|
}
|
|
}
|
|
|
|
func (m *Model) ResetFolder(folder string) {
|
|
l.Infof("Cleaning data for folder %q", folder)
|
|
db.DropFolder(m.db, folder)
|
|
}
|
|
|
|
func (m *Model) String() string {
|
|
return fmt.Sprintf("model@%p", m)
|
|
}
|
|
|
|
func (m *Model) VerifyConfiguration(from, to config.Configuration) error {
|
|
return nil
|
|
}
|
|
|
|
func (m *Model) CommitConfiguration(from, to config.Configuration) bool {
|
|
// TODO: This should not use reflect, and should take more care to try to handle stuff without restart.
|
|
|
|
// Go through the folder configs and figure out if we need to restart or not.
|
|
|
|
fromFolders := mapFolders(from.Folders)
|
|
toFolders := mapFolders(to.Folders)
|
|
for folderID, cfg := range toFolders {
|
|
if _, ok := fromFolders[folderID]; !ok {
|
|
// A folder was added.
|
|
l.Debugln(m, "adding folder", folderID)
|
|
m.AddFolder(cfg)
|
|
m.StartFolder(folderID)
|
|
}
|
|
}
|
|
|
|
for folderID, fromCfg := range fromFolders {
|
|
toCfg, ok := toFolders[folderID]
|
|
if !ok {
|
|
// The folder was removed.
|
|
m.RemoveFolder(folderID)
|
|
continue
|
|
}
|
|
|
|
// This folder exists on both sides. Settings might have changed.
|
|
// Check if anything differs, apart from the label.
|
|
toCfgCopy := toCfg
|
|
fromCfgCopy := fromCfg
|
|
fromCfgCopy.Label = ""
|
|
toCfgCopy.Label = ""
|
|
|
|
if !reflect.DeepEqual(fromCfgCopy, toCfgCopy) {
|
|
m.RestartFolder(toCfg)
|
|
}
|
|
|
|
// Emit the folder pause/resume event
|
|
if fromCfg.Paused != toCfg.Paused {
|
|
eventType := events.FolderResumed
|
|
if toCfg.Paused {
|
|
eventType = events.FolderPaused
|
|
}
|
|
events.Default.Log(eventType, map[string]string{"id": toCfg.ID, "label": toCfg.Label})
|
|
}
|
|
}
|
|
|
|
// Removing a device. We actually don't need to do anything.
|
|
// Because folder config has changed (since the device lists do not match)
|
|
// Folders for that had device got "restarted", which involves killing
|
|
// connections to all devices that we were sharing the folder with.
|
|
// At some point model.Close() will get called for that device which will
|
|
// clean residue device state that is not part of any folder.
|
|
|
|
// Pausing a device, unpausing is handled by the connection service.
|
|
fromDevices := mapDeviceConfigs(from.Devices)
|
|
toDevices := mapDeviceConfigs(to.Devices)
|
|
for deviceID, toCfg := range toDevices {
|
|
fromCfg, ok := fromDevices[deviceID]
|
|
if !ok || fromCfg.Paused == toCfg.Paused {
|
|
continue
|
|
}
|
|
|
|
if toCfg.Paused {
|
|
l.Infoln("Pausing", deviceID)
|
|
m.close(deviceID)
|
|
events.Default.Log(events.DevicePaused, map[string]string{"device": deviceID.String()})
|
|
} else {
|
|
events.Default.Log(events.DeviceResumed, map[string]string{"device": deviceID.String()})
|
|
}
|
|
}
|
|
|
|
// Some options don't require restart as those components handle it fine
|
|
// by themselves.
|
|
from.Options.URAccepted = to.Options.URAccepted
|
|
from.Options.URUniqueID = to.Options.URUniqueID
|
|
from.Options.ListenAddresses = to.Options.ListenAddresses
|
|
from.Options.RelaysEnabled = to.Options.RelaysEnabled
|
|
from.Options.UnackedNotificationIDs = to.Options.UnackedNotificationIDs
|
|
// All of the other generic options require restart. Or at least they may;
|
|
// removing this check requires going through those options carefully and
|
|
// making sure there are individual services that handle them correctly.
|
|
// This code is the "original" requires-restart check and protects other
|
|
// components that haven't yet been converted to VerifyConfig/CommitConfig
|
|
// handling.
|
|
if !reflect.DeepEqual(from.Options, to.Options) {
|
|
l.Debugln(m, "requires restart, options differ")
|
|
return false
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
// mapFolders returns a map of folder ID to folder configuration for the given
|
|
// slice of folder configurations.
|
|
func mapFolders(folders []config.FolderConfiguration) map[string]config.FolderConfiguration {
|
|
m := make(map[string]config.FolderConfiguration, len(folders))
|
|
for _, cfg := range folders {
|
|
m[cfg.ID] = cfg
|
|
}
|
|
return m
|
|
}
|
|
|
|
// mapDevices returns a map of device ID to nothing for the given slice of
|
|
// device IDs.
|
|
func mapDevices(devices []protocol.DeviceID) map[protocol.DeviceID]struct{} {
|
|
m := make(map[protocol.DeviceID]struct{}, len(devices))
|
|
for _, dev := range devices {
|
|
m[dev] = struct{}{}
|
|
}
|
|
return m
|
|
}
|
|
|
|
// mapDeviceConfigs returns a map of device ID to device configuration for the given
|
|
// slice of folder configurations.
|
|
func mapDeviceConfigs(devices []config.DeviceConfiguration) map[protocol.DeviceID]config.DeviceConfiguration {
|
|
m := make(map[protocol.DeviceID]config.DeviceConfiguration, len(devices))
|
|
for _, dev := range devices {
|
|
m[dev.DeviceID] = dev
|
|
}
|
|
return m
|
|
}
|
|
|
|
func symlinkInvalid(folder string, fi db.FileIntf) bool {
|
|
if !symlinks.Supported && fi.IsSymlink() && !fi.IsInvalid() && !fi.IsDeleted() {
|
|
symlinkWarning.Do(func() {
|
|
l.Warnln("Symlinks are disabled, unsupported or require Administrator privileges. This might cause your folder to appear out of sync.")
|
|
})
|
|
|
|
// Need to type switch for the concrete type to be able to access fields...
|
|
var name string
|
|
switch fi := fi.(type) {
|
|
case protocol.FileInfo:
|
|
name = fi.Name
|
|
case db.FileInfoTruncated:
|
|
name = fi.Name
|
|
}
|
|
l.Infoln("Unsupported symlink", name, "in folder", folder)
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
// Skips `skip` elements and retrieves up to `get` elements from a given slice.
|
|
// Returns the resulting slice, plus how much elements are left to skip or
|
|
// copy to satisfy the values which were provided, given the slice is not
|
|
// big enough.
|
|
func getChunk(data []string, skip, get int) ([]string, int, int) {
|
|
l := len(data)
|
|
if l <= skip {
|
|
return []string{}, skip - l, get
|
|
} else if l < skip+get {
|
|
return data[skip:l], 0, get - (l - skip)
|
|
}
|
|
return data[skip : skip+get], 0, 0
|
|
}
|
|
|
|
func closeRawConn(conn io.Closer) error {
|
|
if conn, ok := conn.(*tls.Conn); ok {
|
|
// If the underlying connection is a *tls.Conn, Close() does more
|
|
// than it says on the tin. Specifically, it sends a TLS alert
|
|
// message, which might block forever if the connection is dead
|
|
// and we don't have a deadline set.
|
|
conn.SetWriteDeadline(time.Now().Add(250 * time.Millisecond))
|
|
}
|
|
return conn.Close()
|
|
}
|
|
|
|
func stringSliceWithout(ss []string, s string) []string {
|
|
for i := range ss {
|
|
if ss[i] == s {
|
|
copy(ss[i:], ss[i+1:])
|
|
ss = ss[:len(ss)-1]
|
|
return ss
|
|
}
|
|
}
|
|
return ss
|
|
}
|
|
|
|
func readOffsetIntoBuf(file string, offset int64, buf []byte) error {
|
|
fd, err := os.Open(file)
|
|
if err != nil {
|
|
l.Debugln("readOffsetIntoBuf.Open", file, err)
|
|
return err
|
|
}
|
|
|
|
defer fd.Close()
|
|
_, err = fd.ReadAt(buf, offset)
|
|
if err != nil {
|
|
l.Debugln("readOffsetIntoBuf.ReadAt", file, err)
|
|
}
|
|
return err
|
|
}
|
|
|
|
// The exists function is expected to return true for all known paths
|
|
// (excluding "" and ".")
|
|
func unifySubs(dirs []string, exists func(dir string) bool) []string {
|
|
subs := trimUntilParentKnown(dirs, exists)
|
|
sort.Strings(subs)
|
|
return simplifySortedPaths(subs)
|
|
}
|
|
|
|
func trimUntilParentKnown(dirs []string, exists func(dir string) bool) []string {
|
|
var subs []string
|
|
for _, sub := range dirs {
|
|
for sub != "" && !ignore.IsInternal(sub) {
|
|
sub = filepath.Clean(sub)
|
|
parent := filepath.Dir(sub)
|
|
if parent == "." || exists(parent) {
|
|
break
|
|
}
|
|
sub = parent
|
|
if sub == "." || sub == string(filepath.Separator) {
|
|
// Shortcut. We are going to scan the full folder, so we can
|
|
// just return an empty list of subs at this point.
|
|
return nil
|
|
}
|
|
}
|
|
if sub == "" {
|
|
return nil
|
|
}
|
|
subs = append(subs, sub)
|
|
}
|
|
return subs
|
|
}
|
|
|
|
func simplifySortedPaths(subs []string) []string {
|
|
var cleaned []string
|
|
next:
|
|
for _, sub := range subs {
|
|
for _, existing := range cleaned {
|
|
if sub == existing || strings.HasPrefix(sub, existing+string(os.PathSeparator)) {
|
|
continue next
|
|
}
|
|
}
|
|
cleaned = append(cleaned, sub)
|
|
}
|
|
|
|
return cleaned
|
|
}
|
|
|
|
// makeForgetUpdate takes an index update and constructs a download progress update
|
|
// causing to forget any progress for files which we've just been sent.
|
|
func makeForgetUpdate(files []protocol.FileInfo) []protocol.FileDownloadProgressUpdate {
|
|
updates := make([]protocol.FileDownloadProgressUpdate, 0, len(files))
|
|
for _, file := range files {
|
|
if file.IsSymlink() || file.IsDirectory() || file.IsDeleted() {
|
|
continue
|
|
}
|
|
updates = append(updates, protocol.FileDownloadProgressUpdate{
|
|
Name: file.Name,
|
|
Version: file.Version,
|
|
UpdateType: protocol.UpdateTypeForget,
|
|
})
|
|
}
|
|
return updates
|
|
}
|
|
|
|
// shouldIgnore returns true when a file should be excluded from processing
|
|
func shouldIgnore(file db.FileIntf, matcher *ignore.Matcher, ignoreDelete bool, tmpNamer tempNamer) bool {
|
|
switch {
|
|
case ignoreDelete && file.IsDeleted():
|
|
// ignoreDelete first because it's a very cheap test so a win if it
|
|
// succeeds, and we might in the long run accumulate quite a few
|
|
// deleted files.
|
|
return true
|
|
|
|
case tmpNamer.IsTemporary(file.FileName()):
|
|
return true
|
|
|
|
case ignore.IsInternal(file.FileName()):
|
|
return true
|
|
|
|
case matcher.Match(file.FileName()).IsIgnored():
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// folderDeviceSet is a set of (folder, deviceID) pairs
|
|
type folderDeviceSet map[string]map[protocol.DeviceID]struct{}
|
|
|
|
// set adds the (dev, folder) pair to the set
|
|
func (s folderDeviceSet) set(dev protocol.DeviceID, folder string) {
|
|
devs, ok := s[folder]
|
|
if !ok {
|
|
devs = make(map[protocol.DeviceID]struct{})
|
|
s[folder] = devs
|
|
}
|
|
devs[dev] = struct{}{}
|
|
}
|
|
|
|
// has returns true if the (dev, folder) pair is in the set
|
|
func (s folderDeviceSet) has(dev protocol.DeviceID, folder string) bool {
|
|
_, ok := s[folder][dev]
|
|
return ok
|
|
}
|
|
|
|
// hasDevice returns true if the device is set on any folder
|
|
func (s folderDeviceSet) hasDevice(dev protocol.DeviceID) bool {
|
|
for _, devices := range s {
|
|
if _, ok := devices[dev]; ok {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// sortedDevices returns the list of devices for a given folder, sorted
|
|
func (s folderDeviceSet) sortedDevices(folder string) []protocol.DeviceID {
|
|
devs := make([]protocol.DeviceID, 0, len(s[folder]))
|
|
for dev := range s[folder] {
|
|
devs = append(devs, dev)
|
|
}
|
|
sort.Sort(protocol.DeviceIDs(devs))
|
|
return devs
|
|
}
|
|
|
|
// rootedJoinedPath takes a root and a supposedly relative path inside that
|
|
// root and returns the joined path. An error is returned if the joined path
|
|
// is not in fact inside the root.
|
|
func rootedJoinedPath(root, rel string) (string, error) {
|
|
// The root must not be empty.
|
|
if root == "" {
|
|
return "", errInvalidFilename
|
|
}
|
|
|
|
pathSep := string(os.PathSeparator)
|
|
|
|
// The expected prefix for the resulting path is the root, with a path
|
|
// separator at the end.
|
|
expectedPrefix := filepath.FromSlash(root)
|
|
if !strings.HasSuffix(expectedPrefix, pathSep) {
|
|
expectedPrefix += pathSep
|
|
}
|
|
|
|
// The relative path should be clean from internal dotdots and similar
|
|
// funkyness.
|
|
rel = filepath.FromSlash(rel)
|
|
if filepath.Clean(rel) != rel {
|
|
return "", errInvalidFilename
|
|
}
|
|
|
|
// It is not acceptable to attempt to traverse upwards or refer to the
|
|
// root itself.
|
|
switch rel {
|
|
case ".", "..", pathSep:
|
|
return "", errNotRelative
|
|
}
|
|
if strings.HasPrefix(rel, ".."+pathSep) {
|
|
return "", errNotRelative
|
|
}
|
|
|
|
if strings.HasPrefix(rel, pathSep+pathSep) {
|
|
// The relative path may pretend to be an absolute path within the
|
|
// root, but the double path separator on Windows implies something
|
|
// else. It would get cleaned by the Join below, but it's out of
|
|
// spec anyway.
|
|
return "", errNotRelative
|
|
}
|
|
|
|
// The supposedly correct path is the one filepath.Join will return, as
|
|
// it does cleaning and so on. Check that one first to make sure no
|
|
// obvious escape attempts have been made.
|
|
joined := filepath.Join(root, rel)
|
|
if !strings.HasPrefix(joined, expectedPrefix) {
|
|
return "", errNotRelative
|
|
}
|
|
|
|
return joined, nil
|
|
}
|