src/cmd/nncp-call/main.go

   1 /*
   2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
   3 Copyright (C) 2016-2021 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                 autoToss       = flag.Bool("autotoss", false, "Toss after call is finished")
  63                 autoTossDoSeen = flag.Bool("autotoss-seen", false, "Create .seen files during tossing")
  64                 autoTossNoFile = flag.Bool("autotoss-nofile", false, "Do not process \"file\" packets during tossing")
  65                 autoTossNoFreq = flag.Bool("autotoss-nofreq", false, "Do not process \"freq\" packets during tossing")
  66                 autoTossNoExec = flag.Bool("autotoss-noexec", false, "Do not process \"exec\" packets during tossing")
  67                 autoTossNoTrns = flag.Bool("autotoss-notrns", false, "Do not process \"trns\" packets during tossing")
  68         )
  69         flag.Usage = usage
  70         flag.Parse()
  71         if *warranty {
  72                 fmt.Println(nncp.Warranty)
  73                 return
  74         }
  75         if *version {
  76                 fmt.Println(nncp.VersionGet())
  77                 return
  78         }
  79         if flag.NArg() < 1 {
  80                 usage()
  81                 os.Exit(1)
  82         }
  83         nice, err := nncp.NicenessParse(*niceRaw)
  84         if err != nil {
  85                 log.Fatalln(err)
  86         }
  87         if *rxOnly && *txOnly {
  88                 log.Fatalln("-rx and -tx can not be set simultaneously")
  89         }
  90
  91         ctx, err := nncp.CtxFromCmdline(
  92                 *cfgPath,
  93                 *spoolPath,
  94                 *logPath,
  95                 *quiet,
  96                 *showPrgrs,
  97                 *omitPrgrs,
  98                 *debug,
  99         )
 100         if err != nil {
 101                 log.Fatalln("Error during initialization:", err)
 102         }
 103         if ctx.Self == nil {
 104                 log.Fatalln("Config lacks private keys")
 105         }
 106
 107         splitted := strings.SplitN(flag.Arg(0), ":", 2)
 108         node, err := ctx.FindNode(splitted[0])
 109         if err != nil {
 110                 log.Fatalln("Invalid NODE specified:", err)
 111         }
 112         if node.NoisePub == nil {
 113                 log.Fatalln("Node does not have online communication capability")
 114         }
 115
 116         onlineDeadline := node.OnlineDeadline
 117         if *onlineDeadlineSec != 0 {
 118                 onlineDeadline = time.Duration(*onlineDeadlineSec) * time.Second
 119         }
 120         maxOnlineTime := node.MaxOnlineTime
 121         if *maxOnlineTimeSec != 0 {
 122                 maxOnlineTime = time.Duration(*maxOnlineTimeSec) * time.Second
 123         }
 124
 125         var xxOnly nncp.TRxTx
 126         if *rxOnly {
 127                 xxOnly = nncp.TRx
 128         } else if *txOnly {
 129                 xxOnly = nncp.TTx
 130         }
 131
 132         var addrs []string
 133         if flag.NArg() == 2 {
 134                 addrs = append(addrs, flag.Arg(1))
 135         } else if len(splitted) == 2 {
 136                 addr, known := ctx.Neigh[*node.Id].Addrs[splitted[1]]
 137                 if !known {
 138                         log.Fatalln("Unknown ADDR specified")
 139                 }
 140                 addrs = append(addrs, addr)
 141         } else {
 142                 for _, addr := range ctx.Neigh[*node.Id].Addrs {
 143                         addrs = append(addrs, addr)
 144                 }
 145         }
 146
 147         var onlyPkts map[[32]byte]bool
 148         if len(*onlyPktsRaw) > 0 {
 149                 splitted = strings.Split(*onlyPktsRaw, ",")
 150                 onlyPkts = make(map[[32]byte]bool, len(splitted))
 151                 for _, pktIdRaw := range splitted {
 152                         pktId, err := nncp.Base32Codec.DecodeString(pktIdRaw)
 153                         if err != nil {
 154                                 log.Fatalln("Invalid packet specified: ", err)
 155                         }
 156                         pktIdArr := new([32]byte)
 157                         copy(pktIdArr[:], pktId)
 158                         onlyPkts[*pktIdArr] = true
 159                 }
 160         }
 161
 162         ctx.Umask()
 163
 164         var autoTossFinish chan struct{}
 165         var autoTossBadCode chan bool
 166         if *autoToss {
 167                 autoTossFinish, autoTossBadCode = ctx.AutoToss(
 168                         node.Id,
 169                         nice,
 170                         *autoTossDoSeen,
 171                         *autoTossNoFile,
 172                         *autoTossNoFreq,
 173                         *autoTossNoExec,
 174                         *autoTossNoTrns,
 175                 )
 176         }
 177
 178         badCode := !ctx.CallNode(
 179                 node,
 180                 addrs,
 181                 nice,
 182                 xxOnly,
 183                 *rxRate,
 184                 *txRate,
 185                 onlineDeadline,
 186                 maxOnlineTime,
 187                 *listOnly,
 188                 onlyPkts,
 189         )
 190
 191         if *autoToss {
 192                 close(autoTossFinish)
 193                 badCode = (<-autoTossBadCode) || badCode
 194         }
 195         if badCode {
 196                 os.Exit(1)
 197         }
 198 }