2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
3 Copyright (C) 2016-2021 Sergey Matveev <stargrave@stargrave.org>
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, version 3 of the License.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
33 xdr "github.com/davecgh/go-xdr/xdr2"
34 "github.com/dustin/go-humanize"
35 "github.com/flynn/noise"
36 "golang.org/x/crypto/blake2b"
40 MaxSPSize = 1<<16 - 256
45 type SPCheckerQueues struct {
46 appeared chan *[32]byte
47 checked chan *[32]byte
51 MagicNNCPLv1 [8]byte = [8]byte{'N', 'N', 'C', 'P', 'S', 0, 0, 1}
56 SPHaltMarshalized []byte
57 SPPingMarshalized []byte
59 NoiseCipherSuite noise.CipherSuite = noise.NewCipherSuite(
61 noise.CipherChaChaPoly,
65 DefaultDeadline = 10 * time.Second
66 PingTimeout = time.Minute
68 spCheckers = make(map[NodeId]*SPCheckerQueues)
71 type FdAndFullSize struct {
76 type HasherAndOffset struct {
84 SPTypeInfo SPType = iota
85 SPTypeFreq SPType = iota
86 SPTypeFile SPType = iota
87 SPTypeDone SPType = iota
88 SPTypeHalt SPType = iota
89 SPTypePing SPType = iota
122 type FreqWithNice struct {
127 type ConnDeadlined interface {
129 SetReadDeadline(t time.Time) error
130 SetWriteDeadline(t time.Time) error
135 spHead := SPHead{Type: SPTypeHalt}
136 if _, err := xdr.Marshal(&buf, spHead); err != nil {
139 SPHaltMarshalized = make([]byte, SPHeadOverhead)
140 copy(SPHaltMarshalized, buf.Bytes())
143 spHead = SPHead{Type: SPTypePing}
144 if _, err := xdr.Marshal(&buf, spHead); err != nil {
147 SPPingMarshalized = make([]byte, SPHeadOverhead)
148 copy(SPPingMarshalized, buf.Bytes())
151 spInfo := SPInfo{Nice: 123, Size: 123, Hash: new([32]byte)}
152 if _, err := xdr.Marshal(&buf, spInfo); err != nil {
155 SPInfoOverhead = buf.Len()
158 spFreq := SPFreq{Hash: new([32]byte), Offset: 123}
159 if _, err := xdr.Marshal(&buf, spFreq); err != nil {
162 SPFreqOverhead = buf.Len()
165 spFile := SPFile{Hash: new([32]byte), Offset: 123}
166 if _, err := xdr.Marshal(&buf, spFile); err != nil {
169 SPFileOverhead = buf.Len()
172 func MarshalSP(typ SPType, sp interface{}) []byte {
174 if _, err := xdr.Marshal(&buf, SPHead{typ}); err != nil {
177 if _, err := xdr.Marshal(&buf, sp); err != nil {
183 func payloadsSplit(payloads [][]byte) [][]byte {
184 var outbounds [][]byte
185 outbound := make([]byte, 0, MaxSPSize)
186 for i, payload := range payloads {
187 outbound = append(outbound, payload...)
188 if i+1 < len(payloads) && len(outbound)+len(payloads[i+1]) > MaxSPSize {
189 outbounds = append(outbounds, outbound)
190 outbound = make([]byte, 0, MaxSPSize)
193 if len(outbound) > 0 {
194 outbounds = append(outbounds, outbound)
199 type SPState struct {
204 onlineDeadline time.Duration
205 maxOnlineTime time.Duration
206 hs *noise.HandshakeState
207 csOur *noise.CipherState
208 csTheir *noise.CipherState
211 infosTheir map[[32]byte]*SPInfo
212 infosOurSeen map[[32]byte]uint8
213 queueTheir []*FreqWithNice
217 RxLastNonPing time.Time
220 TxLastNonPing time.Time
222 mustFinishAt time.Time
223 Duration time.Duration
233 onlyPkts map[[32]byte]bool
234 writeSPBuf bytes.Buffer
235 fds map[string]FdAndFullSize
237 fileHashers map[string]*HasherAndOffset
238 checkerQueues SPCheckerQueues
242 func (state *SPState) SetDead() {
247 // Already closed channel, dead
253 for range state.payloads {
257 for range state.pings {
261 for _, s := range state.fds {
267 func (state *SPState) NotAlive() bool {
276 func (state *SPState) dirUnlock() {
277 state.Ctx.UnlockDir(state.rxLock)
278 state.Ctx.UnlockDir(state.txLock)
281 func SPChecker(ctx *Ctx, nodeId *NodeId, appeared, checked chan *[32]byte) {
282 for hshValue := range appeared {
283 pktName := Base32Codec.EncodeToString(hshValue[:])
289 ctx.LogD("sp-checker", les, func(les LEs) string {
290 return fmt.Sprintf("Checksumming %s/rx/%s", ctx.NodeName(nodeId), pktName)
292 size, err := ctx.CheckNoCK(nodeId, hshValue)
293 les = append(les, LE{"Size", size})
295 ctx.LogE("sp-checker", les, err, func(les LEs) string {
297 "Checksumming %s/rx/%s (%s)", ctx.NodeName(nodeId), pktName,
298 humanize.IBytes(uint64(size)),
303 ctx.LogI("sp-checker-done", les, func(les LEs) string {
305 "Packet %s is retreived (%s)",
306 pktName, humanize.IBytes(uint64(size)),
309 go func(hsh *[32]byte) { checked <- hsh }(hshValue)
313 func (state *SPState) WriteSP(dst io.Writer, payload []byte, ping bool) error {
314 state.writeSPBuf.Reset()
315 n, err := xdr.Marshal(&state.writeSPBuf, SPRaw{
322 if n, err = dst.Write(state.writeSPBuf.Bytes()); err == nil {
323 state.TxLastSeen = time.Now()
324 state.TxBytes += int64(n)
326 state.TxLastNonPing = state.TxLastSeen
332 func (state *SPState) ReadSP(src io.Reader) ([]byte, error) {
334 n, err := xdr.UnmarshalLimited(src, &sp, 1<<17)
336 ue := err.(*xdr.UnmarshalError)
337 if ue.Err == io.EOF {
342 state.RxLastSeen = time.Now()
343 state.RxBytes += int64(n)
344 if sp.Magic != MagicNNCPLv1 {
347 return sp.Payload, nil
350 func (ctx *Ctx) infosOur(nodeId *NodeId, nice uint8, seen *map[[32]byte]uint8) [][]byte {
353 for job := range ctx.Jobs(nodeId, TTx) {
354 if job.PktEnc.Nice > nice {
357 if _, known := (*seen)[*job.HshValue]; known {
360 totalSize += job.Size
361 infos = append(infos, &SPInfo{
362 Nice: job.PktEnc.Nice,
363 Size: uint64(job.Size),
366 (*seen)[*job.HshValue] = job.PktEnc.Nice
368 sort.Sort(ByNice(infos))
369 var payloads [][]byte
370 for _, info := range infos {
371 payloads = append(payloads, MarshalSP(SPTypeInfo, info))
372 pktName := Base32Codec.EncodeToString(info.Hash[:])
373 ctx.LogD("sp-info-our", LEs{
377 }, func(les LEs) string {
379 "Our info: %s/tx/%s (%s)",
380 ctx.NodeName(nodeId),
382 humanize.IBytes(info.Size),
387 ctx.LogI("sp-infos-tx", LEs{
390 {"Pkts", len(payloads)},
392 }, func(les LEs) string {
394 "We have got for %s: %d packets, %s",
395 ctx.NodeName(nodeId),
397 humanize.IBytes(uint64(totalSize)),
401 return payloadsSplit(payloads)
404 func (state *SPState) StartI(conn ConnDeadlined) error {
405 nodeId := state.Node.Id
406 err := state.Ctx.ensureRxDir(nodeId)
411 if !state.listOnly && (state.xxOnly == "" || state.xxOnly == TRx) {
412 rxLock, err = state.Ctx.LockDir(nodeId, string(TRx))
418 if !state.listOnly && (state.xxOnly == "" || state.xxOnly == TTx) {
419 txLock, err = state.Ctx.LockDir(nodeId, string(TTx))
424 started := time.Now()
425 conf := noise.Config{
426 CipherSuite: NoiseCipherSuite,
427 Pattern: noise.HandshakeIK,
429 StaticKeypair: noise.DHKey{
430 Private: state.Ctx.Self.NoisePrv[:],
431 Public: state.Ctx.Self.NoisePub[:],
433 PeerStatic: state.Node.NoisePub[:],
435 hs, err := noise.NewHandshakeState(conf)
440 state.payloads = make(chan []byte)
441 state.pings = make(chan struct{})
442 state.infosTheir = make(map[[32]byte]*SPInfo)
443 state.infosOurSeen = make(map[[32]byte]uint8)
444 state.started = started
445 state.rxLock = rxLock
446 state.txLock = txLock
448 var infosPayloads [][]byte
449 if !state.listOnly && (state.xxOnly == "" || state.xxOnly == TTx) {
450 infosPayloads = state.Ctx.infosOur(nodeId, state.Nice, &state.infosOurSeen)
452 var firstPayload []byte
453 if len(infosPayloads) > 0 {
454 firstPayload = infosPayloads[0]
456 // Pad first payload, to hide actual number of existing files
457 for i := 0; i < (MaxSPSize-len(firstPayload))/SPHeadOverhead; i++ {
458 firstPayload = append(firstPayload, SPHaltMarshalized...)
463 buf, _, _, err = state.hs.WriteMessage(nil, firstPayload)
468 les := LEs{{"Node", nodeId}, {"Nice", int(state.Nice)}}
469 state.Ctx.LogD("sp-startI", les, func(les LEs) string {
471 "SP with %s (nice %s): sending first message",
473 NicenessFmt(state.Nice),
476 conn.SetWriteDeadline(time.Now().Add(DefaultDeadline)) // #nosec G104
477 if err = state.WriteSP(conn, buf, false); err != nil {
478 state.Ctx.LogE("sp-startI", les, err, func(les LEs) string {
480 "SP with %s (nice %s): writing",
482 NicenessFmt(state.Nice),
488 state.Ctx.LogD("sp-startI-wait", les, func(les LEs) string {
490 "SP with %s (nice %s): waiting for first message",
492 NicenessFmt(state.Nice),
495 conn.SetReadDeadline(time.Now().Add(DefaultDeadline)) // #nosec G104
496 if buf, err = state.ReadSP(conn); err != nil {
497 state.Ctx.LogE("sp-startI-read", les, err, func(les LEs) string {
499 "SP with %s (nice %s): reading",
501 NicenessFmt(state.Nice),
507 payload, state.csOur, state.csTheir, err = state.hs.ReadMessage(nil, buf)
509 state.Ctx.LogE("sp-startI-read", les, err, func(les LEs) string {
511 "SP with %s (nice %s): reading Noise message",
513 NicenessFmt(state.Nice),
519 state.Ctx.LogD("sp-startI-workers", les, func(les LEs) string {
521 "SP with %s (nice %s): starting workers",
523 NicenessFmt(state.Nice),
526 err = state.StartWorkers(conn, infosPayloads, payload)
528 state.Ctx.LogE("sp-startI-workers", les, err, func(les LEs) string {
530 "SP with %s (nice %s): starting workers",
532 NicenessFmt(state.Nice),
540 func (state *SPState) StartR(conn ConnDeadlined) error {
541 started := time.Now()
542 conf := noise.Config{
543 CipherSuite: NoiseCipherSuite,
544 Pattern: noise.HandshakeIK,
546 StaticKeypair: noise.DHKey{
547 Private: state.Ctx.Self.NoisePrv[:],
548 Public: state.Ctx.Self.NoisePub[:],
551 hs, err := noise.NewHandshakeState(conf)
557 state.payloads = make(chan []byte)
558 state.pings = make(chan struct{})
559 state.infosOurSeen = make(map[[32]byte]uint8)
560 state.infosTheir = make(map[[32]byte]*SPInfo)
561 state.started = started
562 state.xxOnly = xxOnly
566 logMsg := func(les LEs) string {
568 "SP nice %s: waiting for first message",
569 NicenessFmt(state.Nice),
572 les := LEs{{"Nice", int(state.Nice)}}
573 state.Ctx.LogD("sp-startR", les, logMsg)
574 conn.SetReadDeadline(time.Now().Add(DefaultDeadline)) // #nosec G104
575 if buf, err = state.ReadSP(conn); err != nil {
576 state.Ctx.LogE("sp-startR-read", les, err, logMsg)
579 if payload, _, _, err = state.hs.ReadMessage(nil, buf); err != nil {
580 state.Ctx.LogE("sp-startR-read", les, err, logMsg)
585 for _, n := range state.Ctx.Neigh {
586 if subtle.ConstantTimeCompare(state.hs.PeerStatic(), n.NoisePub[:]) == 1 {
592 peerId := Base32Codec.EncodeToString(state.hs.PeerStatic())
593 err = errors.New("unknown peer: " + peerId)
594 state.Ctx.LogE("sp-startR-unknown", append(les, LE{"Peer", peerId}), err, logMsg)
598 state.rxRate = node.RxRate
599 state.txRate = node.TxRate
600 state.onlineDeadline = node.OnlineDeadline
601 state.maxOnlineTime = node.MaxOnlineTime
602 les = LEs{{"Node", node.Id}, {"Nice", int(state.Nice)}}
604 if err = state.Ctx.ensureRxDir(node.Id); err != nil {
608 if xxOnly == "" || xxOnly == TRx {
609 rxLock, err = state.Ctx.LockDir(node.Id, string(TRx))
614 state.rxLock = rxLock
616 if xxOnly == "" || xxOnly == TTx {
617 txLock, err = state.Ctx.LockDir(node.Id, string(TTx))
622 state.txLock = txLock
624 var infosPayloads [][]byte
625 if xxOnly == "" || xxOnly == TTx {
626 infosPayloads = state.Ctx.infosOur(node.Id, state.Nice, &state.infosOurSeen)
628 var firstPayload []byte
629 if len(infosPayloads) > 0 {
630 firstPayload = infosPayloads[0]
632 // Pad first payload, to hide actual number of existing files
633 for i := 0; i < (MaxSPSize-len(firstPayload))/SPHeadOverhead; i++ {
634 firstPayload = append(firstPayload, SPHaltMarshalized...)
637 state.Ctx.LogD("sp-startR-write", les, func(les LEs) string {
639 "SP with %s (nice %s): sending first message",
640 node.Name, NicenessFmt(state.Nice),
643 buf, state.csTheir, state.csOur, err = state.hs.WriteMessage(nil, firstPayload)
648 conn.SetWriteDeadline(time.Now().Add(DefaultDeadline)) // #nosec G104
649 if err = state.WriteSP(conn, buf, false); err != nil {
650 state.Ctx.LogE("sp-startR-write", les, err, func(les LEs) string {
652 "SP with %s (nice %s): writing",
653 node.Name, NicenessFmt(state.Nice),
659 state.Ctx.LogD("sp-startR-workers", les, func(les LEs) string {
661 "SP with %s (nice %s): starting workers",
662 node.Name, NicenessFmt(state.Nice),
665 err = state.StartWorkers(conn, infosPayloads, payload)
672 func (state *SPState) closeFd(pth string) {
674 if s, exists := state.fds[pth]; exists {
675 delete(state.fds, pth)
678 state.fdsLock.Unlock()
681 func (state *SPState) StartWorkers(
683 infosPayloads [][]byte,
686 les := LEs{{"Node", state.Node.Id}, {"Nice", int(state.Nice)}}
687 state.fds = make(map[string]FdAndFullSize)
688 state.fileHashers = make(map[string]*HasherAndOffset)
689 state.isDead = make(chan struct{})
690 if state.maxOnlineTime > 0 {
691 state.mustFinishAt = state.started.Add(state.maxOnlineTime)
696 queues := spCheckers[*state.Node.Id]
698 queues = &SPCheckerQueues{
699 appeared: make(chan *[32]byte),
700 checked: make(chan *[32]byte),
702 spCheckers[*state.Node.Id] = queues
703 go SPChecker(state.Ctx, state.Node.Id, queues.appeared, queues.checked)
705 state.checkerQueues = *queues
707 for job := range state.Ctx.JobsNoCK(state.Node.Id) {
708 if job.PktEnc.Nice <= state.Nice {
709 state.checkerQueues.appeared <- job.HshValue
715 defer state.wg.Done()
720 case hsh := <-state.checkerQueues.checked:
721 state.payloads <- MarshalSP(SPTypeDone, SPDone{hsh})
727 // Remaining handshake payload sending
728 if len(infosPayloads) > 1 {
731 for _, payload := range infosPayloads[1:] {
733 "sp-queue-remaining",
734 append(les, LE{"Size", int64(len(payload))}),
735 func(les LEs) string {
737 "SP with %s (nice %s): queuing remaining payload (%s)",
738 state.Node.Name, NicenessFmt(state.Nice),
739 humanize.IBytes(uint64(len(payload))),
743 state.payloads <- payload
749 // Processing of first payload and queueing its responses
750 logMsg := func(les LEs) string {
752 "SP with %s (nice %s): processing first payload (%s)",
753 state.Node.Name, NicenessFmt(state.Nice),
754 humanize.IBytes(uint64(len(payload))),
757 state.Ctx.LogD("sp-process", append(les, LE{"Size", int64(len(payload))}), logMsg)
758 replies, err := state.ProcessSP(payload)
760 state.Ctx.LogE("sp-process", les, err, logMsg)
765 for _, reply := range replies {
768 append(les, LE{"Size", int64(len(reply))}),
769 func(les LEs) string {
771 "SP with %s (nice %s): queuing reply (%s)",
772 state.Node.Name, NicenessFmt(state.Nice),
773 humanize.IBytes(uint64(len(payload))),
777 state.payloads <- reply
785 deadlineTicker := time.NewTicker(time.Second)
786 pingTicker := time.NewTicker(PingTimeout)
791 deadlineTicker.Stop()
794 case now := <-deadlineTicker.C:
795 if (now.Sub(state.RxLastNonPing) >= state.onlineDeadline &&
796 now.Sub(state.TxLastNonPing) >= state.onlineDeadline) ||
797 (state.maxOnlineTime > 0 && state.mustFinishAt.Before(now)) ||
798 (now.Sub(state.RxLastSeen) >= 2*PingTimeout) {
800 conn.Close() // #nosec G104
802 case now := <-pingTicker.C:
803 if now.After(state.TxLastSeen.Add(PingTimeout)) {
806 state.pings <- struct{}{}
814 // Spool checker and INFOs sender of appearing files
815 if !state.listOnly && (state.xxOnly == "" || state.xxOnly == TTx) {
818 ticker := time.NewTicker(time.Second)
826 for _, payload := range state.Ctx.infosOur(
833 append(les, LE{"Size", int64(len(payload))}),
834 func(les LEs) string {
836 "SP with %s (nice %s): queuing new info (%s)",
837 state.Node.Name, NicenessFmt(state.Nice),
838 humanize.IBytes(uint64(len(payload))),
842 state.payloads <- payload
853 defer state.SetDead()
854 defer state.wg.Done()
856 if state.NotAlive() {
863 state.Ctx.LogD("sp-got-ping", les, func(les LEs) string {
865 "SP with %s (nice %s): got ping",
866 state.Node.Name, NicenessFmt(state.Nice),
869 payload = SPPingMarshalized
871 case payload = <-state.payloads:
874 append(les, LE{"Size", int64(len(payload))}),
875 func(les LEs) string {
877 "SP with %s (nice %s): got payload (%s)",
878 state.Node.Name, NicenessFmt(state.Nice),
879 humanize.IBytes(uint64(len(payload))),
885 if len(state.queueTheir) == 0 {
887 time.Sleep(100 * time.Millisecond)
890 freq := state.queueTheir[0].freq
892 if state.txRate > 0 {
893 time.Sleep(time.Second / time.Duration(state.txRate))
895 pktName := Base32Codec.EncodeToString(freq.Hash[:])
898 LE{"XX", string(TTx)},
900 LE{"Size", int64(freq.Offset)},
902 logMsg := func(les LEs) string {
904 "SP with %s (nice %s): tx/%s (%s)",
905 state.Node.Name, NicenessFmt(state.Nice),
907 humanize.IBytes(freq.Offset),
910 state.Ctx.LogD("sp-queue", lesp, func(les LEs) string {
911 return logMsg(les) + ": queueing"
913 pth := filepath.Join(
915 state.Node.Id.String(),
917 Base32Codec.EncodeToString(freq.Hash[:]),
919 state.fdsLock.RLock()
920 fdAndFullSize, exists := state.fds[pth]
921 state.fdsLock.RUnlock()
923 fd, err := os.Open(pth)
925 state.Ctx.LogE("sp-queue-open", lesp, err, func(les LEs) string {
926 return logMsg(les) + ": opening"
932 state.Ctx.LogE("sp-queue-stat", lesp, err, func(les LEs) string {
933 return logMsg(les) + ": stating"
937 fdAndFullSize = FdAndFullSize{fd: fd, fullSize: fi.Size()}
939 state.fds[pth] = fdAndFullSize
940 state.fdsLock.Unlock()
942 fd := fdAndFullSize.fd
943 fullSize := fdAndFullSize.fullSize
945 if freq.Offset < uint64(fullSize) {
946 state.Ctx.LogD("sp-file-seek", lesp, func(les LEs) string {
947 return logMsg(les) + ": seeking"
949 if _, err = fd.Seek(int64(freq.Offset), io.SeekStart); err != nil {
950 state.Ctx.LogE("sp-file-seek", lesp, err, func(les LEs) string {
951 return logMsg(les) + ": seeking"
955 buf = make([]byte, MaxSPSize-SPHeadOverhead-SPFileOverhead)
956 n, err := fd.Read(buf)
958 state.Ctx.LogE("sp-file-read", lesp, err, func(les LEs) string {
959 return logMsg(les) + ": reading"
966 LE{"XX", string(TTx)},
968 LE{"Size", int64(n)},
970 state.Ctx.LogD("sp-file-read", lesp, func(les LEs) string {
973 logMsg(les), humanize.IBytes(uint64(n)),
978 payload = MarshalSP(SPTypeFile, SPFile{
983 ourSize := freq.Offset + uint64(len(buf))
986 LE{"XX", string(TTx)},
988 LE{"Size", int64(ourSize)},
989 LE{"FullSize", fullSize},
991 if state.Ctx.ShowPrgrs {
995 if len(state.queueTheir) > 0 && *state.queueTheir[0].freq.Hash == *freq.Hash {
996 if ourSize == uint64(fullSize) {
997 state.Ctx.LogD("sp-file-finished", lesp, func(les LEs) string {
998 return logMsg(les) + ": finished"
1000 if len(state.queueTheir) > 1 {
1001 state.queueTheir = state.queueTheir[1:]
1003 state.queueTheir = state.queueTheir[:0]
1006 state.queueTheir[0].freq.Offset += uint64(len(buf))
1009 state.Ctx.LogD("sp-file-disappeared", lesp, func(les LEs) string {
1010 return logMsg(les) + ": queue disappeared"
1015 logMsg := func(les LEs) string {
1017 "SP with %s (nice %s): sending %s",
1018 state.Node.Name, NicenessFmt(state.Nice),
1019 humanize.IBytes(uint64(len(payload))),
1022 state.Ctx.LogD("sp-sending", append(les, LE{"Size", int64(len(payload))}), logMsg)
1023 conn.SetWriteDeadline(time.Now().Add(DefaultDeadline)) // #nosec G104
1024 if err := state.WriteSP(conn, state.csOur.Encrypt(nil, nil, payload), ping); err != nil {
1025 state.Ctx.LogE("sp-sending", les, err, logMsg)
1035 if state.NotAlive() {
1038 logMsg := func(les LEs) string {
1040 "SP with %s (nice %s): waiting for payload",
1041 state.Node.Name, NicenessFmt(state.Nice),
1044 state.Ctx.LogD("sp-recv-wait", les, logMsg)
1045 conn.SetReadDeadline(time.Now().Add(DefaultDeadline)) // #nosec G104
1046 payload, err := state.ReadSP(conn)
1051 unmarshalErr := err.(*xdr.UnmarshalError)
1052 if os.IsTimeout(unmarshalErr.Err) {
1055 if unmarshalErr.ErrorCode == xdr.ErrIO {
1058 state.Ctx.LogE("sp-recv-wait", les, err, logMsg)
1061 logMsg = func(les LEs) string {
1063 "SP with %s (nice %s): payload (%s)",
1064 state.Node.Name, NicenessFmt(state.Nice),
1065 humanize.IBytes(uint64(len(payload))),
1070 append(les, LE{"Size", int64(len(payload))}),
1071 func(les LEs) string { return logMsg(les) + ": got" },
1073 payload, err = state.csTheir.Decrypt(nil, nil, payload)
1075 state.Ctx.LogE("sp-recv-got", les, err, func(les LEs) string {
1076 return logMsg(les) + ": got"
1082 append(les, LE{"Size", int64(len(payload))}),
1083 func(les LEs) string {
1084 return logMsg(les) + ": processing"
1087 replies, err := state.ProcessSP(payload)
1089 state.Ctx.LogE("sp-recv-process", les, err, func(les LEs) string {
1090 return logMsg(les) + ": processing"
1096 for _, reply := range replies {
1099 append(les[:len(les)-1], LE{"Size", int64(len(reply))}),
1100 func(les LEs) string {
1102 "SP with %s (nice %s): queuing reply (%s)",
1103 state.Node.Name, NicenessFmt(state.Nice),
1104 humanize.IBytes(uint64(len(reply))),
1108 state.payloads <- reply
1112 if state.rxRate > 0 {
1113 time.Sleep(time.Second / time.Duration(state.rxRate))
1119 conn.Close() // #nosec G104
1125 func (state *SPState) Wait() {
1127 close(state.payloads)
1130 state.Duration = time.Now().Sub(state.started)
1131 state.RxSpeed = state.RxBytes
1132 state.TxSpeed = state.TxBytes
1133 rxDuration := int64(state.RxLastSeen.Sub(state.started).Seconds())
1134 txDuration := int64(state.TxLastSeen.Sub(state.started).Seconds())
1136 state.RxSpeed = state.RxBytes / rxDuration
1139 state.TxSpeed = state.TxBytes / txDuration
1143 func (state *SPState) ProcessSP(payload []byte) ([][]byte, error) {
1144 les := LEs{{"Node", state.Node.Id}, {"Nice", int(state.Nice)}}
1145 r := bytes.NewReader(payload)
1147 var replies [][]byte
1150 state.Ctx.LogD("sp-process-unmarshal", les, func(les LEs) string {
1152 "SP with %s (nice %s): unmarshaling header",
1153 state.Node.Name, NicenessFmt(state.Nice),
1157 if _, err = xdr.Unmarshal(r, &head); err != nil {
1158 state.Ctx.LogE("sp-process-unmarshal", les, err, func(les LEs) string {
1160 "SP with %s (nice %s): unmarshaling header",
1161 state.Node.Name, NicenessFmt(state.Nice),
1166 if head.Type != SPTypePing {
1167 state.RxLastNonPing = state.RxLastSeen
1173 append(les, LE{"Type", "halt"}), func(les LEs) string {
1175 "SP with %s (nice %s): got HALT",
1176 state.Node.Name, NicenessFmt(state.Nice),
1181 state.queueTheir = nil
1187 append(les, LE{"Type", "ping"}),
1188 func(les LEs) string {
1190 "SP with %s (nice %s): got PING",
1191 state.Node.Name, NicenessFmt(state.Nice),
1198 lesp := append(les, LE{"Type", "info"})
1200 "sp-process-info-unmarshal", lesp,
1201 func(les LEs) string {
1203 "SP with %s (nice %s): unmarshaling INFO",
1204 state.Node.Name, NicenessFmt(state.Nice),
1209 if _, err = xdr.Unmarshal(r, &info); err != nil {
1211 "sp-process-info-unmarshal", lesp, err,
1212 func(les LEs) string {
1214 "SP with %s (nice %s): unmarshaling INFO",
1215 state.Node.Name, NicenessFmt(state.Nice),
1221 pktName := Base32Codec.EncodeToString(info.Hash[:])
1225 LE{"Size", int64(info.Size)},
1226 LE{"PktNice", int(info.Nice)},
1228 logMsg := func(les LEs) string {
1230 "SP with %s (nice %s): INFO %s (%s) nice %s",
1231 state.Node.Name, NicenessFmt(state.Nice),
1233 humanize.IBytes(info.Size),
1234 NicenessFmt(info.Nice),
1237 if !state.listOnly && info.Nice > state.Nice {
1238 state.Ctx.LogD("sp-process-info-too-nice", lesp, func(les LEs) string {
1239 return logMsg(les) + ": too nice"
1243 state.Ctx.LogD("sp-process-info-got", lesp, func(les LEs) string {
1244 return logMsg(les) + ": received"
1246 if !state.listOnly && state.xxOnly == TTx {
1250 state.infosTheir[*info.Hash] = &info
1252 state.Ctx.LogD("sp-process-info-stat", lesp, func(les LEs) string {
1253 return logMsg(les) + ": stating part"
1255 pktPath := filepath.Join(
1257 state.Node.Id.String(),
1259 Base32Codec.EncodeToString(info.Hash[:]),
1261 logMsg = func(les LEs) string {
1263 "Packet %s (%s) (nice %s)",
1265 humanize.IBytes(info.Size),
1266 NicenessFmt(info.Nice),
1269 if _, err = os.Stat(pktPath); err == nil {
1270 state.Ctx.LogI("sp-info-done", lesp, func(les LEs) string {
1271 return logMsg(les) + ": already done"
1273 if !state.listOnly {
1274 replies = append(replies, MarshalSP(SPTypeDone, SPDone{info.Hash}))
1278 if _, err = os.Stat(pktPath + SeenSuffix); err == nil {
1279 state.Ctx.LogI("sp-info-seen", lesp, func(les LEs) string {
1280 return logMsg(les) + ": already seen"
1282 if !state.listOnly {
1283 replies = append(replies, MarshalSP(SPTypeDone, SPDone{info.Hash}))
1287 if _, err = os.Stat(pktPath + NoCKSuffix); err == nil {
1288 state.Ctx.LogI("sp-info-nock", lesp, func(les LEs) string {
1289 return logMsg(les) + ": still not checksummed"
1293 fi, err := os.Stat(pktPath + PartSuffix)
1298 if !state.Ctx.IsEnoughSpace(int64(info.Size) - offset) {
1299 state.Ctx.LogI("sp-info-no-space", lesp, func(les LEs) string {
1300 return logMsg(les) + ": not enough space"
1306 append(lesp, LE{"Offset", offset}),
1307 func(les LEs) string {
1309 "%s: %d%%", logMsg(les), 100*uint64(offset)/info.Size,
1313 if !state.listOnly && (state.onlyPkts == nil || state.onlyPkts[*info.Hash]) {
1314 replies = append(replies, MarshalSP(
1316 SPFreq{info.Hash, uint64(offset)},
1321 lesp := append(les, LE{"Type", "file"})
1322 state.Ctx.LogD("sp-process-file", lesp, func(les LEs) string {
1324 "SP with %s (nice %s): unmarshaling FILE",
1325 state.Node.Name, NicenessFmt(state.Nice),
1329 if _, err = xdr.Unmarshal(r, &file); err != nil {
1330 state.Ctx.LogE("sp-process-file", lesp, err, func(les LEs) string {
1332 "SP with %s (nice %s): unmarshaling FILE",
1333 state.Node.Name, NicenessFmt(state.Nice),
1338 pktName := Base32Codec.EncodeToString(file.Hash[:])
1341 LE{"XX", string(TRx)},
1343 LE{"Size", int64(len(file.Payload))},
1345 logMsg := func(les LEs) string {
1347 "Got packet %s (%s)",
1348 pktName, humanize.IBytes(uint64(len(file.Payload))),
1351 dirToSync := filepath.Join(
1353 state.Node.Id.String(),
1356 filePath := filepath.Join(dirToSync, pktName)
1357 filePathPart := filePath + PartSuffix
1358 state.Ctx.LogD("sp-file-open", lesp, func(les LEs) string {
1359 return logMsg(les) + ": opening part"
1361 state.fdsLock.RLock()
1362 fdAndFullSize, exists := state.fds[filePathPart]
1363 state.fdsLock.RUnlock()
1366 fd = fdAndFullSize.fd
1368 fd, err = os.OpenFile(
1370 os.O_RDWR|os.O_CREATE,
1374 state.Ctx.LogE("sp-file-open", lesp, err, func(les LEs) string {
1375 return logMsg(les) + ": opening part"
1379 state.fdsLock.Lock()
1380 state.fds[filePathPart] = FdAndFullSize{fd: fd}
1381 state.fdsLock.Unlock()
1382 if file.Offset == 0 {
1383 h, err := blake2b.New256(nil)
1387 state.fileHashers[filePath] = &HasherAndOffset{h: h}
1392 append(lesp, LE{"Offset", file.Offset}),
1393 func(les LEs) string {
1394 return fmt.Sprintf("%s: seeking %d", logMsg(les), file.Offset)
1396 if _, err = fd.Seek(int64(file.Offset), io.SeekStart); err != nil {
1397 state.Ctx.LogE("sp-file-seek", lesp, err, func(les LEs) string {
1398 return logMsg(les) + ": seeking"
1400 state.closeFd(filePathPart)
1403 state.Ctx.LogD("sp-file-write", lesp, func(les LEs) string {
1404 return logMsg(les) + ": writing"
1406 if _, err = fd.Write(file.Payload); err != nil {
1407 state.Ctx.LogE("sp-file-write", lesp, err, func(les LEs) string {
1408 return logMsg(les) + ": writing"
1410 state.closeFd(filePathPart)
1413 hasherAndOffset, hasherExists := state.fileHashers[filePath]
1415 if hasherAndOffset.offset == file.Offset {
1416 if _, err = hasherAndOffset.h.Write(file.Payload); err != nil {
1419 hasherAndOffset.offset += uint64(len(file.Payload))
1422 "sp-file-offset-differs", lesp,
1423 func(les LEs) string {
1424 return logMsg(les) + ": offset differs, deleting hasher"
1427 delete(state.fileHashers, filePath)
1428 hasherExists = false
1431 ourSize := int64(file.Offset + uint64(len(file.Payload)))
1432 lesp[len(lesp)-1].V = ourSize
1433 fullsize := int64(0)
1435 infoTheir, ok := state.infosTheir[*file.Hash]
1438 fullsize = int64(infoTheir.Size)
1440 lesp = append(lesp, LE{"FullSize", fullsize})
1441 if state.Ctx.ShowPrgrs {
1442 Progress("Rx", lesp)
1444 if fullsize != ourSize {
1447 logMsg = func(les LEs) string {
1449 "Got packet %s %d%% (%s / %s)",
1450 pktName, 100*ourSize/fullsize,
1451 humanize.IBytes(uint64(ourSize)),
1452 humanize.IBytes(uint64(fullsize)),
1457 state.Ctx.LogE("sp-file-sync", lesp, err, func(les LEs) string {
1458 return logMsg(les) + ": syncing"
1460 state.closeFd(filePathPart)
1464 if bytes.Compare(hasherAndOffset.h.Sum(nil), file.Hash[:]) != 0 {
1466 "sp-file-bad-checksum", lesp,
1467 errors.New("checksum mismatch"),
1472 if err = os.Rename(filePathPart, filePath); err != nil {
1473 state.Ctx.LogE("sp-file-rename", lesp, err, func(les LEs) string {
1474 return logMsg(les) + ": renaming"
1478 if err = DirSync(dirToSync); err != nil {
1479 state.Ctx.LogE("sp-file-dirsync", lesp, err, func(les LEs) string {
1480 return logMsg(les) + ": dirsyncing"
1484 state.Ctx.LogI("sp-file-done", lesp, func(les LEs) string {
1485 return logMsg(les) + ": done"
1489 state.payloads <- MarshalSP(SPTypeDone, SPDone{file.Hash})
1493 delete(state.infosTheir, *file.Hash)
1495 if !state.Ctx.HdrUsage {
1496 state.closeFd(filePathPart)
1499 if _, err = fd.Seek(0, io.SeekStart); err != nil {
1500 state.Ctx.LogE("sp-file-seek", lesp, err, func(les LEs) string {
1501 return logMsg(les) + ": seeking"
1503 state.closeFd(filePathPart)
1506 _, pktEncRaw, err := state.Ctx.HdrRead(fd)
1507 state.closeFd(filePathPart)
1509 state.Ctx.LogE("sp-file-hdr-read", lesp, err, func(les LEs) string {
1510 return logMsg(les) + ": HdrReading"
1514 state.Ctx.HdrWrite(pktEncRaw, filePath)
1517 state.closeFd(filePathPart)
1518 if err = os.Rename(filePathPart, filePath+NoCKSuffix); err != nil {
1519 state.Ctx.LogE("sp-file-rename", lesp, err, func(les LEs) string {
1520 return logMsg(les) + ": renaming"
1524 if err = DirSync(dirToSync); err != nil {
1525 state.Ctx.LogE("sp-file-dirsync", lesp, err, func(les LEs) string {
1526 return logMsg(les) + ": dirsyncing"
1530 state.Ctx.LogI("sp-file-downloaded", lesp, func(les LEs) string {
1531 return logMsg(les) + ": downloaded"
1534 delete(state.infosTheir, *file.Hash)
1537 state.checkerQueues.appeared <- file.Hash
1541 lesp := append(les, LE{"Type", "done"})
1542 state.Ctx.LogD("sp-process-done-unmarshal", lesp, func(les LEs) string {
1544 "SP with %s (nice %s): unmarshaling DONE",
1545 state.Node.Name, NicenessFmt(state.Nice),
1549 if _, err = xdr.Unmarshal(r, &done); err != nil {
1550 state.Ctx.LogE("sp-process-done-unmarshal", lesp, err, func(les LEs) string {
1552 "SP with %s (nice %s): unmarshaling DONE",
1553 state.Node.Name, NicenessFmt(state.Nice),
1558 pktName := Base32Codec.EncodeToString(done.Hash[:])
1559 lesp = append(lesp, LE{"Pkt", pktName}, LE{"XX", string(TTx)})
1560 logMsg := func(les LEs) string {
1562 "SP with %s (nice %s): DONE: removing %s",
1563 state.Node.Name, NicenessFmt(state.Nice), pktName,
1566 state.Ctx.LogD("sp-done", lesp, logMsg)
1567 pth := filepath.Join(
1569 state.Node.Id.String(),
1573 if err = os.Remove(pth); err == nil {
1574 state.Ctx.LogI("sp-done", lesp, func(les LEs) string {
1575 return fmt.Sprintf("Packet %s is sent", pktName)
1577 if state.Ctx.HdrUsage {
1578 os.Remove(pth + HdrSuffix)
1581 state.Ctx.LogE("sp-done", lesp, err, logMsg)
1585 lesp := append(les, LE{"Type", "freq"})
1586 state.Ctx.LogD("sp-process-freq", lesp, func(les LEs) string {
1588 "SP with %s (nice %s): unmarshaling FREQ",
1589 state.Node.Name, NicenessFmt(state.Nice),
1593 if _, err = xdr.Unmarshal(r, &freq); err != nil {
1594 state.Ctx.LogE("sp-process-freq", lesp, err, func(les LEs) string {
1596 "SP with %s (nice %s): unmarshaling FREQ",
1597 state.Node.Name, NicenessFmt(state.Nice),
1602 pktName := Base32Codec.EncodeToString(freq.Hash[:])
1603 lesp = append(lesp, LE{"Pkt", pktName}, LE{"Offset", freq.Offset})
1604 state.Ctx.LogD("sp-process-freq-queueing", lesp, func(les LEs) string {
1606 "SP with %s (nice %s): FREQ %s: queuing",
1607 state.Node.Name, NicenessFmt(state.Nice), pktName,
1610 nice, exists := state.infosOurSeen[*freq.Hash]
1612 if state.onlyPkts == nil || !state.onlyPkts[*freq.Hash] {
1615 var freqWithNice *FreqWithNice
1616 for insertIdx, freqWithNice = range state.queueTheir {
1617 if freqWithNice.nice > nice {
1621 state.queueTheir = append(state.queueTheir, nil)
1622 copy(state.queueTheir[insertIdx+1:], state.queueTheir[insertIdx:])
1623 state.queueTheir[insertIdx] = &FreqWithNice{&freq, nice}
1626 state.Ctx.LogD("sp-process-freq-skip", lesp, func(les LEs) string {
1628 "SP with %s (nice %s): FREQ %s: skipping",
1629 state.Node.Name, NicenessFmt(state.Nice), pktName,
1634 state.Ctx.LogD("sp-process-freq-unknown", lesp, func(les LEs) string {
1636 "SP with %s (nice %s): FREQ %s: unknown",
1637 state.Node.Name, NicenessFmt(state.Nice), pktName,
1644 "sp-process-type-unknown",
1645 append(les, LE{"Type", head.Type}),
1646 errors.New("unknown type"),
1647 func(les LEs) string {
1649 "SP with %s (nice %s): %d",
1650 state.Node.Name, NicenessFmt(state.Nice), head.Type,
1654 return nil, BadPktType
1662 for _, info := range state.infosTheir {
1667 state.Ctx.LogI("sp-infos-rx", LEs{
1668 {"XX", string(TRx)},
1669 {"Node", state.Node.Id},
1671 {"Size", int64(size)},
1672 }, func(les LEs) string {
1674 "%s has got for us: %d packets, %s",
1675 state.Node.Name, pkts, humanize.IBytes(size),
1679 return payloadsSplit(replies), nil