2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
3 Copyright (C) 2016-2022 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 // Send packet receipt acknowledgement via NNCP.
32 xdr "github.com/davecgh/go-xdr/xdr2"
33 "go.cypherpunks.ru/nncp/v8"
37 fmt.Fprintf(os.Stderr, nncp.UsageHeader())
38 fmt.Fprintf(os.Stderr, "nncp-ack -- send packet receipt acknowledgement\n\n")
39 fmt.Fprintf(os.Stderr, "Usage: %s [options] -all\n", os.Args[0])
40 fmt.Fprintf(os.Stderr, "Usage: %s [options] -node NODE[,...]\n", os.Args[0])
41 fmt.Fprintf(os.Stderr, "Usage: %s [options] -node NODE -pkt PKT\n", os.Args[0])
42 fmt.Fprintln(os.Stderr, "Options:")
48 cfgPath = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
49 niceRaw = flag.String("nice", nncp.NicenessFmt(nncp.DefaultNiceFreq), "Outbound packet niceness")
50 minSizeRaw = flag.Uint64("minsize", 0, "Minimal required resulting packet size, in KiB")
51 viaOverride = flag.String("via", "", "Override Via path to destination node (ignored with -all)")
52 spoolPath = flag.String("spool", "", "Override path to spool")
53 logPath = flag.String("log", "", "Override path to logfile")
54 doAll = flag.Bool("all", false, "ACK all rx packet for all nodes")
55 nodesRaw = flag.String("node", "", "ACK rx packets for that node")
56 pktRaw = flag.String("pkt", "", "ACK only that packet")
57 quiet = flag.Bool("quiet", false, "Print only errors")
58 showPrgrs = flag.Bool("progress", false, "Force progress showing")
59 omitPrgrs = flag.Bool("noprogress", false, "Omit progress showing")
60 debug = flag.Bool("debug", false, "Print debug messages")
61 version = flag.Bool("version", false, "Print version information")
62 warranty = flag.Bool("warranty", false, "Print warranty information")
64 log.SetFlags(log.Lshortfile)
68 fmt.Println(nncp.Warranty)
72 fmt.Println(nncp.VersionGet())
75 nice, err := nncp.NicenessParse(*niceRaw)
80 ctx, err := nncp.CtxFromCmdline(
90 log.Fatalln("Error during initialization:", err)
93 log.Fatalln("Config lacks private keys")
97 minSize := int64(*minSizeRaw) * 1024
99 var nodes []*nncp.Node
101 for _, nodeRaw := range strings.Split(*nodesRaw, ",") {
102 node, err := ctx.FindNode(nodeRaw)
104 log.Fatalln("Invalid -node specified:", err)
106 nodes = append(nodes, node)
114 for _, node := range ctx.Neigh {
115 nodes = append(nodes, node)
117 } else if len(nodes) == 0 {
122 acksCreated := os.NewFile(uintptr(4), "ACKsCreated")
123 if acksCreated == nil {
124 log.Fatalln("can not open FD:4")
132 nncp.ViaOverride(*viaOverride, ctx, nodes[0])
133 pktName, err := ctx.TxACK(nodes[0], nice, *pktRaw, minSize)
137 acksCreated.WriteString(nodes[0].Id.String() + "/" + pktName + "\n")
142 for _, node := range nodes {
143 for job := range ctx.Jobs(node.Id, nncp.TRx) {
144 pktName := filepath.Base(job.Path)
145 sender := ctx.Neigh[*job.PktEnc.Sender]
147 {K: "Node", V: job.PktEnc.Sender},
148 {K: "Pkt", V: pktName},
150 logMsg := func(les nncp.LEs) string {
153 ctx.NodeName(job.PktEnc.Sender), pktName,
157 err := errors.New("unknown node")
158 ctx.LogE("ack-read", les, err, logMsg)
162 fd, err := os.Open(job.Path)
164 ctx.LogE("ack-read-open", les, err, func(les nncp.LEs) string {
165 return logMsg(les) + ": opening" + job.Path
170 pktEnc, _, err := ctx.HdrRead(fd)
173 ctx.LogE("ack-read-read", les, err, func(les nncp.LEs) string {
174 return logMsg(les) + ": reading" + job.Path
179 switch pktEnc.Magic {
180 case nncp.MagicNNCPEv1.B:
181 err = nncp.MagicNNCPEv1.TooOld()
182 case nncp.MagicNNCPEv2.B:
183 err = nncp.MagicNNCPEv2.TooOld()
184 case nncp.MagicNNCPEv3.B:
185 err = nncp.MagicNNCPEv3.TooOld()
186 case nncp.MagicNNCPEv4.B:
187 err = nncp.MagicNNCPEv4.TooOld()
188 case nncp.MagicNNCPEv5.B:
189 err = nncp.MagicNNCPEv5.TooOld()
190 case nncp.MagicNNCPEv6.B:
192 err = errors.New("is not an encrypted packet")
196 ctx.LogE("ack-read-magic", les, err, logMsg)
200 if _, err = fd.Seek(0, io.SeekStart); err != nil {
202 ctx.LogE("ack-read-seek", les, err, func(les nncp.LEs) string {
203 return logMsg(les) + ": seeking"
208 pipeR, pipeW := io.Pipe()
209 go nncp.PktEncRead(ctx.Self, ctx.Neigh, bufio.NewReader(fd), pipeW, true, nil)
211 _, err = xdr.Unmarshal(pipeR, &pkt)
215 ctx.LogE("ack-read-unmarshal", les, err, func(les nncp.LEs) string {
216 return logMsg(les) + ": unmarshal"
221 if pkt.Type == nncp.PktTypeACK {
222 ctx.LogI("ack-read-if-ack", les, func(les nncp.LEs) string {
223 return logMsg(les) + ": it is ACK, skipping"
227 newPktName, err := ctx.TxACK(node, nice, pktName, minSize)
231 acksCreated.WriteString(node.Id.String() + "/" + newPktName + "\n")