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         "strings"
  28
  29         "go.cypherpunks.ru/nncp/v8"
  30 )
  31
  32 func usage() {
  33         fmt.Fprintf(os.Stderr, nncp.UsageHeader())
  34         fmt.Fprintf(os.Stderr, "nncp-ack -- send packet receipt acknowledgement\n\n")
  35         fmt.Fprintf(os.Stderr, "Usage: %s [options] -all\n", os.Args[0])
  36         fmt.Fprintf(os.Stderr, "Usage: %s           -node NODE[,...]\n", os.Args[0])
  37         fmt.Fprintf(os.Stderr, "Usage: %s           -node NODE -pkt PKT\n", os.Args[0])
  38         fmt.Fprintln(os.Stderr, "Options:")
  39         flag.PrintDefaults()
  40 }
  41
  42 func main() {
  43         var (
  44                 cfgPath     = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
  45                 niceRaw     = flag.String("nice", nncp.NicenessFmt(nncp.DefaultNiceFreq), "Outbound packet niceness")
  46                 minSizeRaw  = flag.Uint64("minsize", 0, "Minimal required resulting packet size, in KiB")
  47                 viaOverride = flag.String("via", "", "Override Via path to destination node (ignored with -all)")
  48                 spoolPath   = flag.String("spool", "", "Override path to spool")
  49                 logPath     = flag.String("log", "", "Override path to logfile")
  50                 doAll       = flag.Bool("all", false, "ACK all rx packet for all nodes")
  51                 nodesRaw    = flag.String("node", "", "ACK rx packets for that node")
  52                 pktRaw      = flag.String("pkt", "", "ACK only that packet")
  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")
  59         )
  60         log.SetFlags(log.Lshortfile)
  61         flag.Usage = usage
  62         flag.Parse()
  63         if *warranty {
  64                 fmt.Println(nncp.Warranty)
  65                 return
  66         }
  67         if *version {
  68                 fmt.Println(nncp.VersionGet())
  69                 return
  70         }
  71         nice, err := nncp.NicenessParse(*niceRaw)
  72         if err != nil {
  73                 log.Fatalln(err)
  74         }
  75
  76         ctx, err := nncp.CtxFromCmdline(
  77                 *cfgPath,
  78                 *spoolPath,
  79                 *logPath,
  80                 *quiet,
  81                 *showPrgrs,
  82                 *omitPrgrs,
  83                 *debug,
  84         )
  85         if err != nil {
  86                 log.Fatalln("Error during initialization:", err)
  87         }
  88         if ctx.Self == nil {
  89                 log.Fatalln("Config lacks private keys")
  90         }
  91
  92         ctx.Umask()
  93         minSize := int64(*minSizeRaw) * 1024
  94
  95         var nodes []*nncp.Node
  96         if *nodesRaw != "" {
  97                 for _, nodeRaw := range strings.Split(*nodesRaw, ",") {
  98                         node, err := ctx.FindNode(nodeRaw)
  99                         if err != nil {
 100                                 log.Fatalln("Invalid -node specified:", err)
 101                         }
 102                         nodes = append(nodes, node)
 103                 }
 104         }
 105         if *doAll {
 106                 if len(nodes) != 0 {
 107                         usage()
 108                         os.Exit(1)
 109                 }
 110                 for _, node := range ctx.Neigh {
 111                         nodes = append(nodes, node)
 112                 }
 113         } else if len(nodes) == 0 {
 114                 usage()
 115                 os.Exit(1)
 116         }
 117
 118         if *pktRaw != "" {
 119                 if len(nodes) != 1 {
 120                         usage()
 121                         os.Exit(1)
 122                 }
 123                 nncp.ViaOverride(*viaOverride, ctx, nodes[0])
 124                 if err = ctx.TxACK(nodes[0], nice, *pktRaw, minSize); err != nil {
 125                         log.Fatalln(err)
 126                 }
 127                 return
 128         }
 129
 130         for _, node := range nodes {
 131                 for job := range ctx.Jobs(node.Id, nncp.TRx) {
 132                         pktName := filepath.Base(job.Path)
 133                         if err = ctx.TxACK(node, nice, pktName, minSize); err != nil {
 134                                 log.Fatalln(err)
 135                         }
 136                 }
 137         }
 138 }