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 xdr "github.com/davecgh/go-xdr/xdr2"
32 "go.cypherpunks.ru/nncp/v5"
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")
63 fmt.Println(nncp.Warranty)
67 fmt.Println(nncp.VersionGet())
74 nice, err := nncp.NicenessParse(*niceRaw)
78 if *rxOnly && *txOnly {
79 log.Fatalln("-rx and -tx can not be set simultaneously")
82 ctx, err := nncp.CtxFromCmdline(
92 log.Fatalln("Error during initialization:", err)
95 var nodeOnly *nncp.Node
97 nodeOnly, err = ctx.FindNode(*nodeRaw)
99 log.Fatalln("Invalid -node specified:", err)
104 selfPath := filepath.Join(flag.Arg(0), ctx.SelfId.String())
107 var fis []os.FileInfo
113 {K: "XX", V: string(nncp.TRx)},
114 {K: "Dir", V: selfPath},
116 ctx.LogD("nncp-xfer", les, "self")
117 if _, err = os.Stat(selfPath); err != nil {
118 if os.IsNotExist(err) {
119 ctx.LogD("nncp-xfer", les, "no dir")
122 ctx.LogE("nncp-xfer", les, err, "stat")
126 dir, err = os.Open(selfPath)
128 ctx.LogE("nncp-xfer", les, err, "open")
132 fis, err = dir.Readdir(0)
133 dir.Close() // #nosec G104
135 ctx.LogE("nncp-xfer", les, err, "read")
139 for _, fi := range fis {
143 nodeId, err := nncp.NodeIdFromString(fi.Name())
144 les := append(les, nncp.LE{K: "Node", V: fi.Name()})
146 ctx.LogD("nncp-xfer", les, "is not NodeId")
149 if nodeOnly != nil && *nodeId != *nodeOnly.Id {
150 ctx.LogD("nncp-xfer", les, "skip")
153 if _, known := ctx.Neigh[*nodeId]; !known {
154 ctx.LogD("nncp-xfer", les, "unknown")
157 dir, err = os.Open(filepath.Join(selfPath, fi.Name()))
159 ctx.LogE("nncp-xfer", les, err, "open")
163 fisInt, err := dir.Readdir(0)
164 dir.Close() // #nosec G104
166 ctx.LogE("nncp-xfer", les, err, "read")
170 for _, fiInt := range fisInt {
174 // Check that it is valid Base32 encoding
175 if _, err = nncp.NodeIdFromString(fiInt.Name()); err != nil {
178 filename := filepath.Join(dir.Name(), fiInt.Name())
179 les := append(les, nncp.LE{K: "File", V: filename})
180 fd, err := os.Open(filename)
182 ctx.LogE("nncp-xfer", les, err, "open")
186 var pktEnc nncp.PktEnc
187 _, err = xdr.Unmarshal(fd, &pktEnc)
188 if err != nil || pktEnc.Magic != nncp.MagicNNCPEv4 {
189 ctx.LogD("nncp-xfer", les, "is not a packet")
190 fd.Close() // #nosec G104
193 if pktEnc.Nice > nice {
194 ctx.LogD("nncp-xfer", les, "too nice")
195 fd.Close() // #nosec G104
198 les = append(les, nncp.LE{K: "Size", V: fiInt.Size()})
199 if !ctx.IsEnoughSpace(fiInt.Size()) {
200 ctx.LogE("nncp-xfer", les, errors.New("is not enough space"), "")
201 fd.Close() // #nosec G104
204 if _, err = fd.Seek(0, 0); err != nil {
207 tmp, err := ctx.NewTmpFileWHash()
213 _, err := io.CopyN(w, bufio.NewReader(fd), fiInt.Size())
218 ctx.LogE("nncp-xfer", les, err, "copy")
219 w.CloseWithError(err) // #nosec G104
222 if _, err = nncp.CopyProgressed(
224 append(les, nncp.LEs{
225 {K: "Pkt", V: filename},
226 {K: "FullSize", V: fiInt.Size()},
230 ctx.LogE("nncp-xfer", les, err, "copy")
233 fd.Close() // #nosec G104
238 if err = tmp.Commit(filepath.Join(
245 ctx.LogI("nncp-xfer", les, "")
247 if err = os.Remove(filename); err != nil {
248 ctx.LogE("nncp-xfer", les, err, "remove")
262 for nodeId := range ctx.Neigh {
264 {K: "XX", V: string(nncp.TTx)},
265 {K: "Node", V: nodeId},
267 if nodeOnly != nil && nodeId != *nodeOnly.Id {
268 ctx.LogD("nncp-xfer", les, "skip")
271 dirLock, err := ctx.LockDir(&nodeId, string(nncp.TTx))
275 nodePath := filepath.Join(flag.Arg(0), nodeId.String())
276 les = append(les, nncp.LE{K: "Dir", V: nodePath})
277 _, err = os.Stat(nodePath)
279 if os.IsNotExist(err) {
280 ctx.LogD("nncp-xfer", les, "does not exist")
282 ctx.UnlockDir(dirLock)
285 if err = os.Mkdir(nodePath, os.FileMode(0777)); err != nil {
286 ctx.UnlockDir(dirLock)
287 ctx.LogE("nncp-xfer", les, err, "mkdir")
292 ctx.UnlockDir(dirLock)
293 ctx.LogE("nncp-xfer", les, err, "stat")
298 dstPath := filepath.Join(nodePath, ctx.SelfId.String())
299 les[len(les)-1].V = dstPath
300 _, err = os.Stat(dstPath)
302 if os.IsNotExist(err) {
303 if err = os.Mkdir(dstPath, os.FileMode(0777)); err != nil {
304 ctx.UnlockDir(dirLock)
305 ctx.LogE("nncp-xfer", les, err, "mkdir")
310 ctx.UnlockDir(dirLock)
311 ctx.LogE("nncp-xfer", les, err, "stat")
316 les = les[:len(les)-1]
317 for job := range ctx.Jobs(&nodeId, nncp.TTx) {
318 pktName := filepath.Base(job.Fd.Name())
319 les := append(les, nncp.LE{K: "Pkt", V: pktName})
320 if job.PktEnc.Nice > nice {
321 ctx.LogD("nncp-xfer", les, "too nice")
322 job.Fd.Close() // #nosec G104
325 if _, err = os.Stat(filepath.Join(dstPath, pktName)); err == nil || !os.IsNotExist(err) {
326 ctx.LogD("nncp-xfer", les, "already exists")
327 job.Fd.Close() // #nosec G104
330 if _, err = os.Stat(filepath.Join(dstPath, pktName+nncp.SeenSuffix)); err == nil || !os.IsNotExist(err) {
331 ctx.LogD("nncp-xfer", les, "already exists")
332 job.Fd.Close() // #nosec G104
335 tmp, err := nncp.TempFile(dstPath, "xfer")
337 ctx.LogE("nncp-xfer", les, err, "mktemp")
338 job.Fd.Close() // #nosec G104
342 les = append(les, nncp.LE{K: "Tmp", V: tmp.Name()})
343 ctx.LogD("nncp-xfer", les, "created")
344 bufW := bufio.NewWriter(tmp)
345 copied, err := nncp.CopyProgressed(
346 bufW, bufio.NewReader(job.Fd), "Tx",
347 append(les, nncp.LE{K: "FullSize", V: job.Size}),
350 job.Fd.Close() // #nosec G104
352 ctx.LogE("nncp-xfer", les, err, "copy")
353 tmp.Close() // #nosec G104
357 if err = bufW.Flush(); err != nil {
358 tmp.Close() // #nosec G104
359 ctx.LogE("nncp-xfer", les, err, "flush")
363 if err = tmp.Sync(); err != nil {
364 tmp.Close() // #nosec G104
365 ctx.LogE("nncp-xfer", les, err, "sync")
369 if err = tmp.Close(); err != nil {
370 ctx.LogE("nncp-xfer", les, err, "sync")
372 if err = os.Rename(tmp.Name(), filepath.Join(dstPath, pktName)); err != nil {
373 ctx.LogE("nncp-xfer", les, err, "rename")
377 if err = nncp.DirSync(dstPath); err != nil {
378 ctx.LogE("nncp-xfer", les, err, "sync")
382 os.Remove(filepath.Join(dstPath, pktName+".part")) // #nosec G104
383 les = les[:len(les)-1]
384 ctx.LogI("nncp-xfer", append(les, nncp.LE{K: "Size", V: copied}), "")
386 if err = os.Remove(job.Fd.Name()); err != nil {
387 ctx.LogE("nncp-xfer", les, err, "remove")
392 ctx.UnlockDir(dirLock)