2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
3 Copyright (C) 2016-2020 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 // Create/digest stream of NNCP encrypted packets.
35 xdr "github.com/davecgh/go-xdr/xdr2"
36 "go.cypherpunks.ru/nncp/v5"
37 "golang.org/x/crypto/blake2b"
45 fmt.Fprintf(os.Stderr, nncp.UsageHeader())
46 fmt.Fprintf(os.Stderr, "nncp-bundle -- Create/digest stream of NNCP encrypted packets\n\n")
47 fmt.Fprintf(os.Stderr, "Usage: %s [options] -tx [-delete] NODE [NODE ...] > ...\n", os.Args[0])
48 fmt.Fprintf(os.Stderr, " %s [options] -rx -delete [-dryrun] [NODE ...] < ...\n", os.Args[0])
49 fmt.Fprintf(os.Stderr, " %s [options] -rx [-check] [-dryrun] [NODE ...] < ...\n", os.Args[0])
50 fmt.Fprintln(os.Stderr, "Options:")
56 cfgPath = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
57 niceRaw = flag.String("nice", nncp.NicenessFmt(255), "Minimal required niceness")
58 doRx = flag.Bool("rx", false, "Receive packets")
59 doTx = flag.Bool("tx", false, "Transfer packets")
60 doDelete = flag.Bool("delete", false, "Delete transferred packets")
61 doCheck = flag.Bool("check", false, "Check integrity while receiving")
62 dryRun = flag.Bool("dryrun", false, "Do no writes")
63 spoolPath = flag.String("spool", "", "Override path to spool")
64 logPath = flag.String("log", "", "Override path to logfile")
65 quiet = flag.Bool("quiet", false, "Print only errors")
66 showPrgrs = flag.Bool("progress", false, "Force progress showing")
67 omitPrgrs = flag.Bool("noprogress", false, "Omit progress showing")
68 debug = flag.Bool("debug", false, "Print debug messages")
69 version = flag.Bool("version", false, "Print version information")
70 warranty = flag.Bool("warranty", false, "Print warranty information")
75 fmt.Println(nncp.Warranty)
79 fmt.Println(nncp.VersionGet())
82 nice, err := nncp.NicenessParse(*niceRaw)
87 log.Fatalln("-rx and -tx can not be set simultaneously")
90 log.Fatalln("At least one of -rx and -tx must be specified")
93 ctx, err := nncp.CtxFromCmdline(
103 log.Fatalln("Error during initialization:", err)
106 nodeIds := make(map[nncp.NodeId]struct{}, flag.NArg())
107 for i := 0; i < flag.NArg(); i++ {
108 node, err := ctx.FindNode(flag.Arg(i))
110 log.Fatalln("Invalid specified:", err)
112 nodeIds[*node.Id] = struct{}{}
119 sds["xx"] = string(nncp.TTx)
121 bufStdout := bufio.NewWriter(os.Stdout)
122 tarWr := tar.NewWriter(bufStdout)
123 for nodeId, _ := range nodeIds {
124 sds["node"] = nodeId.String()
125 for job := range ctx.Jobs(&nodeId, nncp.TTx) {
126 pktName = filepath.Base(job.Fd.Name())
128 if job.PktEnc.Nice > nice {
129 ctx.LogD("nncp-bundle", sds, "too nice")
133 if err = tarWr.WriteHeader(&tar.Header{
134 Format: tar.FormatUSTAR,
135 Name: nncp.NNCPBundlePrefix,
137 Typeflag: tar.TypeDir,
139 log.Fatalln("Error writing tar header:", err)
141 if err = tarWr.WriteHeader(&tar.Header{
142 Format: tar.FormatPAX,
143 Name: strings.Join([]string{
144 nncp.NNCPBundlePrefix,
151 Typeflag: tar.TypeReg,
153 log.Fatalln("Error writing tar header:", err)
155 if _, err = nncp.CopyProgressed(
157 nncp.SdsAdd(sds, nncp.SDS{
158 "pkt": nncp.Base32Codec.EncodeToString(job.HshValue[:]),
159 "fullsize": job.Size,
163 log.Fatalln("Error during copying to tar:", err)
166 if err = tarWr.Flush(); err != nil {
167 log.Fatalln("Error during tar flushing:", err)
169 if err = bufStdout.Flush(); err != nil {
170 log.Fatalln("Error during stdout flushing:", err)
173 if err = os.Remove(job.Fd.Name()); err != nil {
174 log.Fatalln("Error during deletion:", err)
177 ctx.LogI("nncp-bundle", nncp.SdsAdd(sds, nncp.SDS{"size": job.Size}), "")
180 if err = tarWr.Close(); err != nil {
181 log.Fatalln("Error during tar closing:", err)
184 bufStdin := bufio.NewReaderSize(os.Stdin, CopyBufSize*2)
188 var entry *tar.Header
190 pktEncBuf := make([]byte, nncp.PktEncOverhead)
191 var pktEnc *nncp.PktEnc
196 peeked, err = bufStdin.Peek(CopyBufSize)
197 if err != nil && err != io.EOF {
198 log.Fatalln("Error during reading:", err)
200 prefixIdx = bytes.Index(peeked, []byte(nncp.NNCPBundlePrefix))
205 bufStdin.Discard(bufStdin.Buffered() - (len(nncp.NNCPBundlePrefix) - 1))
208 bufStdin.Discard(prefixIdx)
209 tarR = tar.NewReader(bufStdin)
210 sds["xx"] = string(nncp.TRx)
211 entry, err = tarR.Next()
216 nncp.SdsAdd(sds, nncp.SDS{"err": err}),
222 if entry.Typeflag != tar.TypeDir {
223 ctx.LogD("nncp-bundle", sds, "Expected NNCP/")
226 entry, err = tarR.Next()
231 nncp.SdsAdd(sds, nncp.SDS{"err": err}),
237 sds["pkt"] = entry.Name
238 if entry.Size < nncp.PktEncOverhead {
239 ctx.LogD("nncp-bundle", sds, "Too small packet")
242 if !ctx.IsEnoughSpace(entry.Size) {
243 ctx.LogE("nncp-bundle", sds, errors.New("not enough spool space"), "")
246 pktName = filepath.Base(entry.Name)
247 if _, err = nncp.Base32Codec.DecodeString(pktName); err != nil {
248 ctx.LogD("nncp-bundle", nncp.SdsAdd(sds, nncp.SDS{"err": "bad packet name"}), "")
251 if _, err = io.ReadFull(tarR, pktEncBuf); err != nil {
252 ctx.LogD("nncp-bundle", nncp.SdsAdd(sds, nncp.SDS{"err": err}), "read")
255 if _, err = xdr.Unmarshal(bytes.NewReader(pktEncBuf), &pktEnc); err != nil {
256 ctx.LogD("nncp-bundle", sds, "Bad packet structure")
259 if pktEnc.Magic != nncp.MagicNNCPEv4 {
260 ctx.LogD("nncp-bundle", sds, "Bad packet magic number")
263 if pktEnc.Nice > nice {
264 ctx.LogD("nncp-bundle", sds, "too nice")
267 if *pktEnc.Sender == *ctx.SelfId && *doDelete {
268 if len(nodeIds) > 0 {
269 if _, exists = nodeIds[*pktEnc.Recipient]; !exists {
270 ctx.LogD("nncp-bundle", sds, "Recipient is not requested")
274 nodeId32 := nncp.Base32Codec.EncodeToString(pktEnc.Recipient[:])
275 sds["xx"] = string(nncp.TTx)
276 sds["node"] = nodeId32
278 dstPath = filepath.Join(
284 if _, err = os.Stat(dstPath); err != nil {
285 ctx.LogD("nncp-bundle", sds, "Packet is already missing")
288 hsh, err := blake2b.New256(nil)
290 log.Fatalln("Error during hasher creation:", err)
292 if _, err = hsh.Write(pktEncBuf); err != nil {
293 log.Fatalln("Error during writing:", err)
295 if _, err = nncp.CopyProgressed(
297 nncp.SdsAdd(sds, nncp.SDS{"fullsize": entry.Size}),
300 log.Fatalln("Error during copying:", err)
302 if nncp.Base32Codec.EncodeToString(hsh.Sum(nil)) == pktName {
303 ctx.LogI("nncp-bundle", sds, "removed")
308 ctx.LogE("nncp-bundle", sds, errors.New("bad checksum"), "")
312 if *pktEnc.Recipient != *ctx.SelfId {
313 ctx.LogD("nncp-bundle", sds, "Unknown recipient")
316 if len(nodeIds) > 0 {
317 if _, exists = nodeIds[*pktEnc.Sender]; !exists {
318 ctx.LogD("nncp-bundle", sds, "Sender is not requested")
322 sds["node"] = nncp.Base32Codec.EncodeToString(pktEnc.Recipient[:])
324 sds["fullsize"] = entry.Size
325 selfPath = filepath.Join(ctx.Spool, ctx.SelfId.String(), string(nncp.TRx))
326 dstPath = filepath.Join(selfPath, pktName)
327 if _, err = os.Stat(dstPath); err == nil || !os.IsNotExist(err) {
328 ctx.LogD("nncp-bundle", sds, "Packet already exists")
331 if _, err = os.Stat(dstPath + nncp.SeenSuffix); err == nil || !os.IsNotExist(err) {
332 ctx.LogD("nncp-bundle", sds, "Packet already exists")
337 hsh, err := blake2b.New256(nil)
339 log.Fatalln("Error during hasher creation:", err)
341 if _, err = hsh.Write(pktEncBuf); err != nil {
342 log.Fatalln("Error during writing:", err)
344 if _, err = nncp.CopyProgressed(hsh, tarR, "check", sds, ctx.ShowPrgrs); err != nil {
345 log.Fatalln("Error during copying:", err)
347 if nncp.Base32Codec.EncodeToString(hsh.Sum(nil)) != pktName {
348 ctx.LogE("nncp-bundle", sds, errors.New("bad checksum"), "")
352 tmp, err := ctx.NewTmpFileWHash()
354 log.Fatalln("Error during temporary file creation:", err)
356 if _, err = tmp.W.Write(pktEncBuf); err != nil {
357 log.Fatalln("Error during writing:", err)
359 if _, err = nncp.CopyProgressed(tmp.W, tarR, "check", sds, ctx.ShowPrgrs); err != nil {
360 log.Fatalln("Error during copying:", err)
362 if err = tmp.W.Flush(); err != nil {
363 log.Fatalln("Error during flusing:", err)
365 if nncp.Base32Codec.EncodeToString(tmp.Hsh.Sum(nil)) == pktName {
366 if err = tmp.Commit(selfPath); err != nil {
367 log.Fatalln("Error during commiting:", err)
370 ctx.LogE("nncp-bundle", sds, errors.New("bad checksum"), "")
377 if _, err = nncp.CopyProgressed(ioutil.Discard, tarR, "Rx", sds, ctx.ShowPrgrs); err != nil {
378 log.Fatalln("Error during copying:", err)
381 tmp, err := ctx.NewTmpFile()
383 log.Fatalln("Error during temporary file creation:", err)
385 bufTmp := bufio.NewWriterSize(tmp, CopyBufSize)
386 if _, err = bufTmp.Write(pktEncBuf); err != nil {
387 log.Fatalln("Error during writing:", err)
389 if _, err = nncp.CopyProgressed(bufTmp, tarR, "Rx", sds, ctx.ShowPrgrs); err != nil {
390 log.Fatalln("Error during copying:", err)
392 if err = bufTmp.Flush(); err != nil {
393 log.Fatalln("Error during flushing:", err)
395 if err = tmp.Sync(); err != nil {
396 log.Fatalln("Error during syncing:", err)
399 if err = os.MkdirAll(selfPath, os.FileMode(0777)); err != nil {
400 log.Fatalln("Error during mkdir:", err)
402 if err = os.Rename(tmp.Name(), dstPath); err != nil {
403 log.Fatalln("Error during renaming:", err)
405 if err = nncp.DirSync(selfPath); err != nil {
406 log.Fatalln("Error during syncing:", err)
410 ctx.LogI("nncp-bundle", nncp.SdsAdd(sds, nncp.SDS{
411 "size": sds["fullsize"],