src/cmd/nncp-call/main.go

   1 /*
   2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
   3 Copyright (C) 2016-2020 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 // Call NNCP TCP daemon.
  19 package main
  20
  21 import (
  22         "flag"
  23         "fmt"
  24         "log"
  25         "os"
  26         "strings"
  27         "time"
  28
  29         "go.cypherpunks.ru/nncp/v5"
  30 )
  31
  32 func usage() {
  33         fmt.Fprintf(os.Stderr, nncp.UsageHeader())
  34         fmt.Fprintf(os.Stderr, "nncp-call -- call TCP daemon\n\n")
  35         fmt.Fprintf(os.Stderr, "Usage: %s [options] NODE[:ADDR] [FORCEADDR]\n", os.Args[0])
  36         fmt.Fprintln(os.Stderr, "Options:")
  37         flag.PrintDefaults()
  38 }
  39
  40 func main() {
  41         var (
  42                 cfgPath     = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
  43                 niceRaw     = flag.String("nice", nncp.NicenessFmt(255), "Minimal required niceness")
  44                 rxOnly      = flag.Bool("rx", false, "Only receive packets")
  45                 txOnly      = flag.Bool("tx", false, "Only transmit packets")
  46                 listOnly    = flag.Bool("list", false, "Only list remote packets")
  47                 onlyPktsRaw = flag.String("pkts", "", "Recieve only that packets, comma separated")
  48                 rxRate      = flag.Int("rxrate", 0, "Maximal receive rate, pkts/sec")
  49                 txRate      = flag.Int("txrate", 0, "Maximal transmit rate, pkts/sec")
  50                 spoolPath   = flag.String("spool", "", "Override path to spool")
  51                 logPath     = flag.String("log", "", "Override path to logfile")
  52                 quiet       = flag.Bool("quiet", false, "Print only errors")
  53                 showPrgrs   = flag.Bool("progress", false, "Force progress showing")
  54                 omitPrgrs   = flag.Bool("noprogress", false, "Omit progress showing")
  55                 debug       = flag.Bool("debug", false, "Print debug messages")
  56                 version     = flag.Bool("version", false, "Print version information")
  57                 warranty    = flag.Bool("warranty", false, "Print warranty information")
  58
  59                 onlineDeadlineSec = flag.Uint("onlinedeadline", 0, "Override onlinedeadline option")
  60                 maxOnlineTimeSec  = flag.Uint("maxonlinetime", 0, "Override maxonlinetime option")
  61         )
  62         flag.Usage = usage
  63         flag.Parse()
  64         if *warranty {
  65                 fmt.Println(nncp.Warranty)
  66                 return
  67         }
  68         if *version {
  69                 fmt.Println(nncp.VersionGet())
  70                 return
  71         }
  72         if flag.NArg() < 1 {
  73                 usage()
  74                 os.Exit(1)
  75         }
  76         nice, err := nncp.NicenessParse(*niceRaw)
  77         if err != nil {
  78                 log.Fatalln(err)
  79         }
  80         if *rxOnly && *txOnly {
  81                 log.Fatalln("-rx and -tx can not be set simultaneously")
  82         }
  83
  84         ctx, err := nncp.CtxFromCmdline(
  85                 *cfgPath,
  86                 *spoolPath,
  87                 *logPath,
  88                 *quiet,
  89                 *showPrgrs,
  90                 *omitPrgrs,
  91                 *debug,
  92         )
  93         if err != nil {
  94                 log.Fatalln("Error during initialization:", err)
  95         }
  96         if ctx.Self == nil {
  97                 log.Fatalln("Config lacks private keys")
  98         }
  99
 100         splitted := strings.SplitN(flag.Arg(0), ":", 2)
 101         node, err := ctx.FindNode(splitted[0])
 102         if err != nil {
 103                 log.Fatalln("Invalid NODE specified:", err)
 104         }
 105         if node.NoisePub == nil {
 106                 log.Fatalln("Node does not have online communication capability")
 107         }
 108
 109         onlineDeadline := node.OnlineDeadline
 110         if *onlineDeadlineSec != 0 {
 111                 onlineDeadline = time.Duration(*onlineDeadlineSec) * time.Second
 112         }
 113         maxOnlineTime := node.MaxOnlineTime
 114         if *maxOnlineTimeSec != 0 {
 115                 maxOnlineTime = time.Duration(*maxOnlineTimeSec) * time.Second
 116         }
 117
 118         var xxOnly nncp.TRxTx
 119         if *rxOnly {
 120                 xxOnly = nncp.TRx
 121         } else if *txOnly {
 122                 xxOnly = nncp.TTx
 123         }
 124
 125         var addrs []string
 126         if flag.NArg() == 2 {
 127                 addrs = append(addrs, flag.Arg(1))
 128         } else if len(splitted) == 2 {
 129                 addr, known := ctx.Neigh[*node.Id].Addrs[splitted[1]]
 130                 if !known {
 131                         log.Fatalln("Unknown ADDR specified")
 132                 }
 133                 addrs = append(addrs, addr)
 134         } else {
 135                 for _, addr := range ctx.Neigh[*node.Id].Addrs {
 136                         addrs = append(addrs, addr)
 137                 }
 138         }
 139
 140         var onlyPkts map[[32]byte]bool
 141         if len(*onlyPktsRaw) > 0 {
 142                 splitted = strings.Split(*onlyPktsRaw, ",")
 143                 onlyPkts = make(map[[32]byte]bool, len(splitted))
 144                 for _, pktIdRaw := range splitted {
 145                         pktId, err := nncp.Base32Codec.DecodeString(pktIdRaw)
 146                         if err != nil {
 147                                 log.Fatalln("Invalid packet specified: ", err)
 148                         }
 149                         pktIdArr := new([32]byte)
 150                         copy(pktIdArr[:], pktId)
 151                         onlyPkts[*pktIdArr] = true
 152                 }
 153         }
 154
 155         ctx.Umask()
 156         if !ctx.CallNode(
 157                 node,
 158                 addrs,
 159                 nice,
 160                 xxOnly,
 161                 *rxRate,
 162                 *txRate,
 163                 onlineDeadline,
 164                 maxOnlineTime,
 165                 *listOnly,
 166                 onlyPkts,
 167         ) {
 168                 os.Exit(1)
 169         }
 170 }