src/cmd/nncp-ack/main.go

   1 /*
   2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
   3 Copyright (C) 2016-2022 Sergey Matveev <stargrave@stargrave.org>
   4
   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.
   8
   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.
  13
  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/>.
  16 */
  17
  18 // Send packet receipt acknowledgement via NNCP.
  19 package main
  20
  21 import (
  22         "flag"
  23         "fmt"
  24         "log"
  25         "os"
  26         "path/filepath"
  27
  28         "go.cypherpunks.ru/nncp/v8"
  29 )
  30
  31 func usage() {
  32         fmt.Fprintf(os.Stderr, nncp.UsageHeader())
  33         fmt.Fprintf(os.Stderr, "nncp-ack -- send packet receipt acknowledgement\n\n")
  34         fmt.Fprintf(os.Stderr, "Usage: %s [options] NODE [PKT|rx]\nOptions:\n", os.Args[0])
  35         flag.PrintDefaults()
  36 }
  37
  38 func main() {
  39         var (
  40                 cfgPath     = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
  41                 niceRaw     = flag.String("nice", nncp.NicenessFmt(nncp.DefaultNiceFreq), "Outbound packet niceness")
  42                 minSizeRaw  = flag.Uint64("minsize", 0, "Minimal required resulting packet size, in KiB")
  43                 viaOverride = flag.String("via", "", "Override Via path to destination node")
  44                 spoolPath   = flag.String("spool", "", "Override path to spool")
  45                 logPath     = flag.String("log", "", "Override path to logfile")
  46                 quiet       = flag.Bool("quiet", false, "Print only errors")
  47                 showPrgrs   = flag.Bool("progress", false, "Force progress showing")
  48                 omitPrgrs   = flag.Bool("noprogress", false, "Omit progress showing")
  49                 debug       = flag.Bool("debug", false, "Print debug messages")
  50                 version     = flag.Bool("version", false, "Print version information")
  51                 warranty    = flag.Bool("warranty", false, "Print warranty information")
  52         )
  53         log.SetFlags(log.Lshortfile)
  54         flag.Usage = usage
  55         flag.Parse()
  56         if *warranty {
  57                 fmt.Println(nncp.Warranty)
  58                 return
  59         }
  60         if *version {
  61                 fmt.Println(nncp.VersionGet())
  62                 return
  63         }
  64         if flag.NArg() != 2 {
  65                 usage()
  66                 os.Exit(1)
  67         }
  68         nice, err := nncp.NicenessParse(*niceRaw)
  69         if err != nil {
  70                 log.Fatalln(err)
  71         }
  72
  73         ctx, err := nncp.CtxFromCmdline(
  74                 *cfgPath,
  75                 *spoolPath,
  76                 *logPath,
  77                 *quiet,
  78                 *showPrgrs,
  79                 *omitPrgrs,
  80                 *debug,
  81         )
  82         if err != nil {
  83                 log.Fatalln("Error during initialization:", err)
  84         }
  85         if ctx.Self == nil {
  86                 log.Fatalln("Config lacks private keys")
  87         }
  88
  89         node, err := ctx.FindNode(flag.Arg(0))
  90         if err != nil {
  91                 log.Fatalln("Invalid NODE specified:", err)
  92         }
  93
  94         nncp.ViaOverride(*viaOverride, ctx, node)
  95         ctx.Umask()
  96         minSize := int64(*minSizeRaw) * 1024
  97
  98         if flag.Arg(1) == string(nncp.TRx) {
  99                 for job := range ctx.Jobs(node.Id, nncp.TRx) {
 100                         pktName := filepath.Base(job.Path)
 101                         if err = ctx.TxACK(node, nice, pktName, minSize); err != nil {
 102                                 log.Fatalln(err)
 103                         }
 104                 }
 105         } else {
 106                 if err = ctx.TxACK(node, nice, flag.Arg(1), minSize); err != nil {
 107                         log.Fatalln(err)
 108                 }
 109         }
 110 }