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/>.
18 // Exchange NNCP inbound and outbounds packets with external directory.
31 "github.com/dustin/go-humanize"
32 "go.cypherpunks.ru/nncp/v6"
36 fmt.Fprintf(os.Stderr, nncp.UsageHeader())
37 fmt.Fprintf(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 fis []os.FileInfo
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 os.IsNotExist(err) {
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 fis, err = dir.Readdir(0)
144 dir.Close() // #nosec G104
146 ctx.LogE("xfer-self-read", les, err, func(les nncp.LEs) string {
147 return logMsg(les) + ": reading"
152 for _, fi := range fis {
156 nodeId, err := nncp.NodeIdFromString(fi.Name())
157 les := append(les, nncp.LE{K: "Node", V: fi.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, fi.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)
188 dir.Close() // #nosec G104
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 fd, err := os.Open(filename)
214 ctx.LogE("xfer-rx-open", les, err, func(les nncp.LEs) string {
215 return logMsg(les) + ": opening"
220 pktEnc, pktEncRaw, err := ctx.HdrRead(fd)
221 if err != nil || pktEnc.Magic != nncp.MagicNNCPEv4 {
222 ctx.LogD("xfer-rx-not-packet", les, func(les nncp.LEs) string {
223 return logMsg(les) + ": is not a packet"
225 fd.Close() // #nosec G104
228 if pktEnc.Nice > nice {
229 ctx.LogD("xfer-rx-too-nice", les, func(les nncp.LEs) string {
230 return logMsg(les) + ": too nice"
232 fd.Close() // #nosec G104
235 les = append(les, nncp.LE{K: "Size", V: fiInt.Size()})
236 logMsg = func(les nncp.LEs) string {
238 "Packet transfer, received from %s: %s (%s)",
239 ctx.NodeName(nodeId), filename,
240 humanize.IBytes(uint64(fiInt.Size())),
243 if !ctx.IsEnoughSpace(fiInt.Size()) {
244 ctx.LogE("xfer-rx", les, errors.New("is not enough space"), logMsg)
245 fd.Close() // #nosec G104
248 if _, err = fd.Seek(0, 0); err != nil {
251 tmp, err := ctx.NewTmpFileWHash()
257 _, err := io.CopyN(w, bufio.NewReader(fd), fiInt.Size())
262 ctx.LogE("xfer-rx", les, err, logMsg)
263 w.CloseWithError(err) // #nosec G104
266 if _, err = nncp.CopyProgressed(
270 nncp.LE{K: "Pkt", V: filename},
271 nncp.LE{K: "FullSize", V: fiInt.Size()},
275 ctx.LogE("xfer-rx", les, err, logMsg)
278 fd.Close() // #nosec G104
283 if err = tmp.Commit(filepath.Join(
290 ctx.LogI("xfer-rx", les, logMsg)
292 if err = os.Remove(filename); err != nil {
293 ctx.LogE("xfer-rx-remove", les, err, logMsg)
298 ctx.HdrWrite(pktEncRaw, filepath.Join(
315 for nodeId := range ctx.Neigh {
316 les := nncp.LEs{{K: "XX", V: string(nncp.TTx)}, {K: "Node", V: nodeId}}
317 logMsg := func(les nncp.LEs) string {
318 return "Packet transfer, sent to " + ctx.NodeName(&nodeId)
320 if nodeOnly != nil && nodeId != *nodeOnly.Id {
321 ctx.LogD("xfer-tx-skip", les, func(les nncp.LEs) string {
322 return logMsg(les) + ": skipping"
326 dirLock, err := ctx.LockDir(&nodeId, string(nncp.TTx))
330 nodePath := filepath.Join(flag.Arg(0), nodeId.String())
331 les = append(les, nncp.LE{K: "Dir", V: nodePath})
332 logMsg = func(les nncp.LEs) string {
334 "Packet transfer, sent to %s: directory %s",
335 ctx.NodeName(&nodeId), nodePath,
338 _, err = os.Stat(nodePath)
340 if os.IsNotExist(err) {
341 ctx.LogD("xfer-tx-not-exist", les, func(les nncp.LEs) string {
342 return logMsg(les) + ": does not exist"
345 ctx.UnlockDir(dirLock)
348 if err = os.Mkdir(nodePath, os.FileMode(0777)); err != nil {
349 ctx.UnlockDir(dirLock)
350 ctx.LogE("xfer-tx-mkdir", les, err, logMsg)
355 ctx.UnlockDir(dirLock)
356 ctx.LogE("xfer-tx", les, err, logMsg)
361 dstPath := filepath.Join(nodePath, ctx.SelfId.String())
362 les[len(les)-1].V = dstPath
363 logMsg = func(les nncp.LEs) string {
365 "Packet transfer, sent to %s: directory %s",
366 ctx.NodeName(&nodeId), dstPath,
369 _, err = os.Stat(dstPath)
371 if os.IsNotExist(err) {
372 if err = os.Mkdir(dstPath, os.FileMode(0777)); err != nil {
373 ctx.UnlockDir(dirLock)
374 ctx.LogE("xfer-tx-mkdir", les, err, logMsg)
379 ctx.UnlockDir(dirLock)
380 ctx.LogE("xfer-tx", les, err, logMsg)
385 les = les[:len(les)-1]
386 for job := range ctx.Jobs(&nodeId, nncp.TTx) {
387 pktName := filepath.Base(job.Path)
388 les := append(les, nncp.LE{K: "Pkt", V: pktName})
389 logMsg = func(les nncp.LEs) string {
391 "Packet transfer, sent to %s: %s",
392 ctx.NodeName(&nodeId), pktName,
395 if job.PktEnc.Nice > nice {
396 ctx.LogD("xfer-tx-too-nice", les, func(les nncp.LEs) string {
397 return logMsg(les) + ": too nice"
401 if _, err = os.Stat(filepath.Join(dstPath, pktName)); err == nil || !os.IsNotExist(err) {
402 ctx.LogD("xfer-tx-exists", les, func(les nncp.LEs) string {
403 return logMsg(les) + ": already exists"
407 if _, err = os.Stat(filepath.Join(dstPath, pktName+nncp.SeenSuffix)); err == nil || !os.IsNotExist(err) {
408 ctx.LogD("xfer-tx-seen", les, func(les nncp.LEs) string {
409 return logMsg(les) + ": already seen"
413 tmp, err := nncp.TempFile(dstPath, "xfer")
415 ctx.LogE("xfer-tx-mktemp", les, err, func(les nncp.LEs) string {
416 return logMsg(les) + ": mktemp"
421 les = append(les, nncp.LE{K: "Tmp", V: tmp.Name()})
422 ctx.LogD("xfer-tx-tmp-create", les, func(les nncp.LEs) string {
423 return fmt.Sprintf("%s: temporary %s created", logMsg(les), tmp.Name())
425 fd, err := os.Open(job.Path)
427 ctx.LogE("xfer-tx-open", les, err, func(les nncp.LEs) string {
428 return logMsg(les) + ": opening"
430 tmp.Close() // #nosec G104
434 bufW := bufio.NewWriter(tmp)
435 copied, err := nncp.CopyProgressed(
436 bufW, bufio.NewReader(fd), "Tx",
437 append(les, nncp.LE{K: "FullSize", V: job.Size}),
440 fd.Close() // #nosec G104
442 ctx.LogE("xfer-tx-copy", les, err, func(les nncp.LEs) string {
443 return logMsg(les) + ": copying"
445 tmp.Close() // #nosec G104
449 if err = bufW.Flush(); err != nil {
450 tmp.Close() // #nosec G104
451 ctx.LogE("xfer-tx-flush", les, err, func(les nncp.LEs) string {
452 return logMsg(les) + ": flushing"
457 if err = tmp.Sync(); err != nil {
458 tmp.Close() // #nosec G104
459 ctx.LogE("xfer-tx-sync", les, err, func(les nncp.LEs) string {
460 return logMsg(les) + ": syncing"
465 if err = tmp.Close(); err != nil {
466 ctx.LogE("xfer-tx-close", les, err, func(les nncp.LEs) string {
467 return logMsg(les) + ": closing"
470 if err = os.Rename(tmp.Name(), filepath.Join(dstPath, pktName)); err != nil {
471 ctx.LogE("xfer-tx-rename", les, err, func(les nncp.LEs) string {
472 return logMsg(les) + ": renaming"
477 if err = nncp.DirSync(dstPath); err != nil {
478 ctx.LogE("xfer-tx-dirsync", les, err, func(les nncp.LEs) string {
479 return logMsg(les) + ": dirsyncing"
484 os.Remove(filepath.Join(dstPath, pktName+".part")) // #nosec G104
485 les = les[:len(les)-1]
488 append(les, nncp.LE{K: "Size", V: copied}),
489 func(les nncp.LEs) string {
491 "%s (%s)", logMsg(les), humanize.IBytes(uint64(copied)),
496 if err = os.Remove(job.Path); err != nil {
497 ctx.LogE("xfer-tx-remove", les, err, func(les nncp.LEs) string {
498 return logMsg(les) + ": removing"
501 } else if ctx.HdrUsage {
502 os.Remove(job.Path + nncp.HdrSuffix)
506 ctx.UnlockDir(dirLock)