src/cmd/nncp-call/main.go

   1 /*
   2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
   3 Copyright (C) 2016-2019 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
  28         "go.cypherpunks.ru/nncp/v5"
  29 )
  30
  31 func usage() {
  32         fmt.Fprintf(os.Stderr, nncp.UsageHeader())
  33         fmt.Fprintf(os.Stderr, "nncp-call -- call TCP daemon\n\n")
  34         fmt.Fprintf(os.Stderr, "Usage: %s [options] NODE[:ADDR] [FORCEADDR]\n", os.Args[0])
  35         fmt.Fprintln(os.Stderr, "Options:")
  36         flag.PrintDefaults()
  37 }
  38
  39 func main() {
  40         var (
  41                 cfgPath     = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
  42                 niceRaw     = flag.String("nice", nncp.NicenessFmt(255), "Minimal required niceness")
  43                 rxOnly      = flag.Bool("rx", false, "Only receive packets")
  44                 txOnly      = flag.Bool("tx", false, "Only transmit packets")
  45                 listOnly    = flag.Bool("list", false, "Only list remote packets")
  46                 onlyPktsRaw = flag.String("pkts", "", "Recieve only that packets, comma separated")
  47                 rxRate      = flag.Int("rxrate", 0, "Maximal receive rate, pkts/sec")
  48                 txRate      = flag.Int("txrate", 0, "Maximal transmit rate, pkts/sec")
  49                 spoolPath   = flag.String("spool", "", "Override path to spool")
  50                 logPath     = flag.String("log", "", "Override path to logfile")
  51                 quiet       = flag.Bool("quiet", false, "Print only errors")
  52                 showPrgrs   = flag.Bool("progress", false, "Force progress showing")
  53                 omitPrgrs   = flag.Bool("noprogress", false, "Omit progress showing")
  54                 debug       = flag.Bool("debug", false, "Print debug messages")
  55                 version     = flag.Bool("version", false, "Print version information")
  56                 warranty    = flag.Bool("warranty", false, "Print warranty information")
  57
  58                 onlineDeadline = flag.Uint("onlinedeadline", 0, "Override onlinedeadline option")
  59                 maxOnlineTime  = flag.Uint("maxonlinetime", 0, "Override maxonlinetime option")
  60         )
  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         if flag.NArg() < 1 {
  72                 usage()
  73                 os.Exit(1)
  74         }
  75         nice, err := nncp.NicenessParse(*niceRaw)
  76         if err != nil {
  77                 log.Fatalln(err)
  78         }
  79         if *rxOnly && *txOnly {
  80                 log.Fatalln("-rx and -tx can not be set simultaneously")
  81         }
  82
  83         ctx, err := nncp.CtxFromCmdline(
  84                 *cfgPath,
  85                 *spoolPath,
  86                 *logPath,
  87                 *quiet,
  88                 *showPrgrs,
  89                 *omitPrgrs,
  90                 *debug,
  91         )
  92         if err != nil {
  93                 log.Fatalln("Error during initialization:", err)
  94         }
  95         if ctx.Self == nil {
  96                 log.Fatalln("Config lacks private keys")
  97         }
  98
  99         splitted := strings.SplitN(flag.Arg(0), ":", 2)
 100         node, err := ctx.FindNode(splitted[0])
 101         if err != nil {
 102                 log.Fatalln("Invalid NODE specified:", err)
 103         }
 104         if node.NoisePub == nil {
 105                 log.Fatalln("Node does not have online communication capability")
 106         }
 107
 108         if *onlineDeadline == 0 {
 109                 onlineDeadline = &node.OnlineDeadline
 110         }
 111         if *maxOnlineTime == 0 {
 112                 maxOnlineTime = &node.MaxOnlineTime
 113         }
 114
 115         var xxOnly nncp.TRxTx
 116         if *rxOnly {
 117                 xxOnly = nncp.TRx
 118         } else if *txOnly {
 119                 xxOnly = nncp.TTx
 120         }
 121
 122         var addrs []string
 123         if flag.NArg() == 2 {
 124                 addrs = append(addrs, flag.Arg(1))
 125         } else if len(splitted) == 2 {
 126                 addr, known := ctx.Neigh[*node.Id].Addrs[splitted[1]]
 127                 if !known {
 128                         log.Fatalln("Unknown ADDR specified")
 129                 }
 130                 addrs = append(addrs, addr)
 131         } else {
 132                 for _, addr := range ctx.Neigh[*node.Id].Addrs {
 133                         addrs = append(addrs, addr)
 134                 }
 135         }
 136
 137         var onlyPkts map[[32]byte]bool
 138         if len(*onlyPktsRaw) > 0 {
 139                 splitted = strings.Split(*onlyPktsRaw, ",")
 140                 onlyPkts = make(map[[32]byte]bool, len(splitted))
 141                 for _, pktIdRaw := range splitted {
 142                         pktId, err := nncp.FromBase32(pktIdRaw)
 143                         if err != nil {
 144                                 log.Fatalln("Invalid packet specified: ", err)
 145                         }
 146                         pktIdArr := new([32]byte)
 147                         copy(pktIdArr[:], pktId)
 148                         onlyPkts[*pktIdArr] = true
 149                 }
 150         }
 151
 152         ctx.Umask()
 153         if !ctx.CallNode(
 154                 node,
 155                 addrs,
 156                 nice,
 157                 xxOnly,
 158                 *rxRate,
 159                 *txRate,
 160                 *onlineDeadline,
 161                 *maxOnlineTime,
 162                 *listOnly,
 163                 onlyPkts,
 164         ) {
 165                 os.Exit(1)
 166         }
 167 }