2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
3 Copyright (C) 2016-2023 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/>.
18 // Exchange NNCP inbound and outbounds packets with external directory.
32 "github.com/dustin/go-humanize"
33 "go.cypherpunks.ru/nncp/v8"
37 fmt.Fprint(os.Stderr, "nncp-xfer -- copy inbound and outbounds packets\n\n")
38 fmt.Fprintf(os.Stderr, "Usage: %s [options] DIR\nOptions:\n", os.Args[0])
44 cfgPath = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
45 nodeRaw = flag.String("node", "", "Process only that node")
46 niceRaw = flag.String("nice", nncp.NicenessFmt(255), "Minimal required niceness")
47 rxOnly = flag.Bool("rx", false, "Only receive packets")
48 txOnly = flag.Bool("tx", false, "Only transfer packets")
49 mkdir = flag.Bool("mkdir", false, "Create necessary outbound directories")
50 keep = flag.Bool("keep", false, "Do not delete transferred packets")
51 spoolPath = flag.String("spool", "", "Override path to spool")
52 logPath = flag.String("log", "", "Override path to logfile")
53 quiet = flag.Bool("quiet", false, "Print only errors")
54 showPrgrs = flag.Bool("progress", false, "Force progress showing")
55 omitPrgrs = flag.Bool("noprogress", false, "Omit progress showing")
56 debug = flag.Bool("debug", false, "Print debug messages")
57 version = flag.Bool("version", false, "Print version information")
58 warranty = flag.Bool("warranty", false, "Print warranty information")
60 log.SetFlags(log.Lshortfile)
64 fmt.Println(nncp.Warranty)
68 fmt.Println(nncp.VersionGet())
75 nice, err := nncp.NicenessParse(*niceRaw)
79 if *rxOnly && *txOnly {
80 log.Fatalln("-rx and -tx can not be set simultaneously")
83 ctx, err := nncp.CtxFromCmdline(
93 log.Fatalln("Error during initialization:", err)
96 var nodeOnly *nncp.Node
98 nodeOnly, err = ctx.FindNode(*nodeRaw)
100 log.Fatalln("Invalid -node specified:", err)
105 selfPath := filepath.Join(flag.Arg(0), ctx.SelfId.String())
108 var entries []os.DirEntry
110 var logMsg func(les nncp.LEs) string
115 {K: "XX", V: string(nncp.TRx)},
116 {K: "Dir", V: selfPath},
118 logMsg = func(les nncp.LEs) string {
119 return "Packet transfer, received from self"
121 ctx.LogD("xfer-self", les, logMsg)
122 if _, err = os.Stat(selfPath); err != nil {
123 if errors.Is(err, fs.ErrNotExist) {
124 ctx.LogD("xfer-self-no-dir", les, func(les nncp.LEs) string {
125 return logMsg(les) + ": no directory"
129 ctx.LogE("xfer-self-stat", les, err, func(les nncp.LEs) string {
130 return logMsg(les) + ": stating"
135 dir, err = os.Open(selfPath)
137 ctx.LogE("xfer-self-open", les, err, func(les nncp.LEs) string {
138 return logMsg(les) + ": opening"
143 entries, err = dir.ReadDir(0)
146 ctx.LogE("xfer-self-read", les, err, func(les nncp.LEs) string {
147 return logMsg(les) + ": reading"
152 for _, entry := range entries {
156 nodeId, err := nncp.NodeIdFromString(entry.Name())
157 les := append(les, nncp.LE{K: "Node", V: entry.Name()})
158 logMsg := func(les nncp.LEs) string {
159 return "Packet transfer, received from " + ctx.NodeName(nodeId)
162 ctx.LogD("xfer-rx-not-node", les, func(les nncp.LEs) string {
163 return logMsg(les) + ": is not NodeId"
167 if nodeOnly != nil && *nodeId != *nodeOnly.Id {
168 ctx.LogD("xfer-rx-skip", les, func(les nncp.LEs) string {
169 return logMsg(les) + ": skipping"
173 if _, known := ctx.Neigh[*nodeId]; !known {
174 ctx.LogD("xfer-rx-unknown", les, func(les nncp.LEs) string {
175 return logMsg(les) + ": unknown"
179 dir, err = os.Open(filepath.Join(selfPath, entry.Name()))
181 ctx.LogE("xfer-rx-open", les, err, func(les nncp.LEs) string {
182 return logMsg(les) + ": opening"
187 fisInt, err := dir.Readdir(0)
190 ctx.LogE("xfer-rx-read", les, err, func(les nncp.LEs) string {
191 return logMsg(les) + ": reading"
196 for _, fiInt := range fisInt {
200 // Check that it is valid Base32 encoding
201 if _, err = nncp.NodeIdFromString(fiInt.Name()); err != nil {
204 filename := filepath.Join(dir.Name(), fiInt.Name())
205 les := append(les, nncp.LE{K: "File", V: filename})
206 logMsg := func(les nncp.LEs) string {
208 "Packet transfer, received from %s: %s",
209 ctx.NodeName(nodeId), filename,
212 if _, err = os.Stat(filepath.Join(
218 )); err == nil || !errors.Is(err, fs.ErrNotExist) {
219 ctx.LogI("xfer-rx-seen", les, func(les nncp.LEs) string {
220 return logMsg(les) + ": packet already seen"
223 if err = os.Remove(filename); err != nil {
224 ctx.LogE("xfer-rx-remove", les, err, logMsg)
230 fd, err := os.Open(filename)
232 ctx.LogE("xfer-rx-open", les, err, func(les nncp.LEs) string {
233 return logMsg(les) + ": opening"
238 pktEnc, pktEncRaw, err := ctx.HdrRead(fd)
240 switch pktEnc.Magic {
241 case nncp.MagicNNCPEv1.B:
242 err = nncp.MagicNNCPEv1.TooOld()
243 case nncp.MagicNNCPEv2.B:
244 err = nncp.MagicNNCPEv2.TooOld()
245 case nncp.MagicNNCPEv3.B:
246 err = nncp.MagicNNCPEv3.TooOld()
247 case nncp.MagicNNCPEv4.B:
248 err = nncp.MagicNNCPEv4.TooOld()
249 case nncp.MagicNNCPEv5.B:
250 err = nncp.MagicNNCPEv5.TooOld()
251 case nncp.MagicNNCPEv6.B:
253 err = errors.New("is not an encrypted packet")
258 "xfer-rx-not-packet",
259 append(les, nncp.LE{K: "Err", V: err}),
260 func(les nncp.LEs) string {
261 return logMsg(les) + ": not valid packet: " + err.Error()
267 if pktEnc.Nice > nice {
268 ctx.LogD("xfer-rx-too-nice", les, func(les nncp.LEs) string {
269 return logMsg(les) + ": too nice"
274 les = append(les, nncp.LE{K: "Size", V: fiInt.Size()})
275 logMsg = func(les nncp.LEs) string {
277 "Packet transfer, received from %s: %s (%s)",
278 ctx.NodeName(nodeId), filename,
279 humanize.IBytes(uint64(fiInt.Size())),
282 if !ctx.IsEnoughSpace(fiInt.Size()) {
283 ctx.LogE("xfer-rx", les, errors.New("is not enough space"), logMsg)
287 if _, err = fd.Seek(0, io.SeekStart); err != nil {
290 tmp, err := ctx.NewTmpFileWHash()
297 w, bufio.NewReaderSize(fd, nncp.MTHBlockSize), fiInt.Size(),
303 ctx.LogE("xfer-rx", les, err, logMsg)
304 w.CloseWithError(err)
307 _, err = nncp.CopyProgressed(
311 nncp.LE{K: "Pkt", V: filename},
312 nncp.LE{K: "FullSize", V: fiInt.Size()},
318 ctx.LogE("xfer-rx", les, err, logMsg)
323 if err = tmp.W.Flush(); err != nil {
324 ctx.LogE("xfer-rx", les, err, logMsg)
329 if tmp.Checksum() != fiInt.Name() {
330 ctx.LogE("xfer-rx", les, errors.New("checksum mismatch"), logMsg)
335 if err = tmp.Commit(filepath.Join(
342 ctx.LogI("xfer-rx", les, logMsg)
344 if err = os.Remove(filename); err != nil {
345 ctx.LogE("xfer-rx-remove", les, err, logMsg)
350 ctx.HdrWrite(pktEncRaw, filepath.Join(
367 for nodeId := range ctx.Neigh {
368 les := nncp.LEs{{K: "XX", V: string(nncp.TTx)}, {K: "Node", V: nodeId}}
369 logMsg := func(les nncp.LEs) string {
370 return "Packet transfer, sent to " + ctx.NodeName(&nodeId)
372 if nodeOnly != nil && nodeId != *nodeOnly.Id {
373 ctx.LogD("xfer-tx-skip", les, func(les nncp.LEs) string {
374 return logMsg(les) + ": skipping"
378 dirLock, err := ctx.LockDir(&nodeId, string(nncp.TTx))
382 nodePath := filepath.Join(flag.Arg(0), nodeId.String())
383 les = append(les, nncp.LE{K: "Dir", V: nodePath})
384 logMsg = func(les nncp.LEs) string {
386 "Packet transfer, sent to %s: directory %s",
387 ctx.NodeName(&nodeId), nodePath,
390 _, err = os.Stat(nodePath)
392 if errors.Is(err, fs.ErrNotExist) {
393 ctx.LogD("xfer-tx-not-exist", les, func(les nncp.LEs) string {
394 return logMsg(les) + ": does not exist"
397 ctx.UnlockDir(dirLock)
400 if err = os.Mkdir(nodePath, os.FileMode(0777)); err != nil {
401 ctx.UnlockDir(dirLock)
402 ctx.LogE("xfer-tx-mkdir", les, err, logMsg)
407 ctx.UnlockDir(dirLock)
408 ctx.LogE("xfer-tx", les, err, logMsg)
413 dstPath := filepath.Join(nodePath, ctx.SelfId.String())
414 les[len(les)-1].V = dstPath
415 logMsg = func(les nncp.LEs) string {
417 "Packet transfer, sent to %s: directory %s",
418 ctx.NodeName(&nodeId), dstPath,
421 _, err = os.Stat(dstPath)
423 if errors.Is(err, fs.ErrNotExist) {
424 if err = os.Mkdir(dstPath, os.FileMode(0777)); err != nil {
425 ctx.UnlockDir(dirLock)
426 ctx.LogE("xfer-tx-mkdir", les, err, logMsg)
431 ctx.UnlockDir(dirLock)
432 ctx.LogE("xfer-tx", les, err, logMsg)
437 les = les[:len(les)-1]
438 for job := range ctx.Jobs(&nodeId, nncp.TTx) {
439 pktName := filepath.Base(job.Path)
440 les := append(les, nncp.LE{K: "Pkt", V: pktName})
441 logMsg = func(les nncp.LEs) string {
443 "Packet transfer, sent to %s: %s",
444 ctx.NodeName(&nodeId), pktName,
447 if job.PktEnc.Nice > nice {
448 ctx.LogD("xfer-tx-too-nice", les, func(les nncp.LEs) string {
449 return logMsg(les) + ": too nice"
453 if _, err = os.Stat(filepath.Join(dstPath, pktName)); err == nil || !errors.Is(err, fs.ErrNotExist) {
454 ctx.LogD("xfer-tx-exists", les, func(les nncp.LEs) string {
455 return logMsg(les) + ": already exists"
459 tmp, err := nncp.TempFile(dstPath, "xfer")
461 ctx.LogE("xfer-tx-mktemp", les, err, func(les nncp.LEs) string {
462 return logMsg(les) + ": mktemp"
467 les = append(les, nncp.LE{K: "Tmp", V: tmp.Name()})
468 ctx.LogD("xfer-tx-tmp-create", les, func(les nncp.LEs) string {
469 return fmt.Sprintf("%s: temporary %s created", logMsg(les), tmp.Name())
471 fd, err := os.Open(job.Path)
473 ctx.LogE("xfer-tx-open", les, err, func(les nncp.LEs) string {
474 return logMsg(les) + ": opening"
480 bufW := bufio.NewWriter(tmp)
481 copied, err := nncp.CopyProgressed(
482 bufW, bufio.NewReaderSize(fd, nncp.MTHBlockSize), "Tx",
483 append(les, nncp.LE{K: "FullSize", V: job.Size}),
488 ctx.LogE("xfer-tx-copy", les, err, func(les nncp.LEs) string {
489 return logMsg(les) + ": copying"
495 if err = bufW.Flush(); err != nil {
497 ctx.LogE("xfer-tx-flush", les, err, func(les nncp.LEs) string {
498 return logMsg(les) + ": flushing"
504 if err = tmp.Sync(); err != nil {
506 ctx.LogE("xfer-tx-sync", les, err, func(les nncp.LEs) string {
507 return logMsg(les) + ": syncing"
513 if err = tmp.Close(); err != nil {
514 ctx.LogE("xfer-tx-close", les, err, func(les nncp.LEs) string {
515 return logMsg(les) + ": closing"
518 if err = os.Rename(tmp.Name(), filepath.Join(dstPath, pktName)); err != nil {
519 ctx.LogE("xfer-tx-rename", les, err, func(les nncp.LEs) string {
520 return logMsg(les) + ": renaming"
525 if err = nncp.DirSync(dstPath); err != nil {
526 ctx.LogE("xfer-tx-dirsync", les, err, func(les nncp.LEs) string {
527 return logMsg(les) + ": dirsyncing"
532 os.Remove(filepath.Join(dstPath, pktName+".part"))
533 les = les[:len(les)-1]
536 append(les, nncp.LE{K: "Size", V: copied}),
537 func(les nncp.LEs) string {
539 "%s (%s)", logMsg(les), humanize.IBytes(uint64(copied)),
544 if err = os.Remove(job.Path); err != nil {
545 ctx.LogE("xfer-tx-remove", les, err, func(les nncp.LEs) string {
546 return logMsg(les) + ": removing"
549 } else if ctx.HdrUsage {
550 os.Remove(nncp.JobPath2Hdr(job.Path))
554 ctx.UnlockDir(dirLock)