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/v7"
  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                 noCK        = flag.Bool("nock", false, "Do no checksum checking")
  48                 onlyPktsRaw = flag.String("pkts", "", "Recieve only that packets, comma separated")
  49                 rxRate      = flag.Int("rxrate", 0, "Maximal receive rate, pkts/sec")
  50                 txRate      = flag.Int("txrate", 0, "Maximal transmit rate, pkts/sec")
  51                 spoolPath   = flag.String("spool", "", "Override path to spool")
  52                 logPath     = flag.String("log", "", "Override path to logfile")
  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                 onlineDeadlineSec = flag.Uint("onlinedeadline", 0, "Override onlinedeadline option")
  61                 maxOnlineTimeSec  = flag.Uint("maxonlinetime", 0, "Override maxonlinetime option")
  62
  63                 autoToss       = flag.Bool("autotoss", false, "Toss after call is finished")
  64                 autoTossDoSeen = flag.Bool("autotoss-seen", false, "Create .seen files during tossing")
  65                 autoTossNoFile = flag.Bool("autotoss-nofile", false, "Do not process \"file\" packets during tossing")
  66                 autoTossNoFreq = flag.Bool("autotoss-nofreq", false, "Do not process \"freq\" packets during tossing")
  67                 autoTossNoExec = flag.Bool("autotoss-noexec", false, "Do not process \"exec\" packets during tossing")
  68                 autoTossNoTrns = flag.Bool("autotoss-notrns", false, "Do not process \"trns\" packets during tossing")
  69                 autoTossNoArea = flag.Bool("autotoss-noarea", false, "Do not process \"area\" packets during tossing")
  70         )
  71         log.SetFlags(log.Lshortfile)
  72         flag.Usage = usage
  73         flag.Parse()
  74         if *warranty {
  75                 fmt.Println(nncp.Warranty)
  76                 return
  77         }
  78         if *version {
  79                 fmt.Println(nncp.VersionGet())
  80                 return
  81         }
  82         if flag.NArg() < 1 {
  83                 usage()
  84                 os.Exit(1)
  85         }
  86         nice, err := nncp.NicenessParse(*niceRaw)
  87         if err != nil {
  88                 log.Fatalln(err)
  89         }
  90         if *rxOnly && *txOnly {
  91                 log.Fatalln("-rx and -tx can not be set simultaneously")
  92         }
  93
  94         ctx, err := nncp.CtxFromCmdline(
  95                 *cfgPath,
  96                 *spoolPath,
  97                 *logPath,
  98                 *quiet,
  99                 *showPrgrs,
 100                 *omitPrgrs,
 101                 *debug,
 102         )
 103         if err != nil {
 104                 log.Fatalln("Error during initialization:", err)
 105         }
 106         if ctx.Self == nil {
 107                 log.Fatalln("Config lacks private keys")
 108         }
 109
 110         splitted := strings.SplitN(flag.Arg(0), ":", 2)
 111         node, err := ctx.FindNode(splitted[0])
 112         if err != nil {
 113                 log.Fatalln("Invalid NODE specified:", err)
 114         }
 115         if node.NoisePub == nil {
 116                 log.Fatalln("Node does not have online communication capability")
 117         }
 118
 119         onlineDeadline := node.OnlineDeadline
 120         if *onlineDeadlineSec != 0 {
 121                 onlineDeadline = time.Duration(*onlineDeadlineSec) * time.Second
 122         }
 123         maxOnlineTime := node.MaxOnlineTime
 124         if *maxOnlineTimeSec != 0 {
 125                 maxOnlineTime = time.Duration(*maxOnlineTimeSec) * time.Second
 126         }
 127
 128         var xxOnly nncp.TRxTx
 129         if *rxOnly {
 130                 xxOnly = nncp.TRx
 131         } else if *txOnly {
 132                 xxOnly = nncp.TTx
 133         }
 134
 135         var addrs []string
 136         if flag.NArg() == 2 {
 137                 addrs = append(addrs, flag.Arg(1))
 138         } else if len(splitted) == 2 {
 139                 addr, known := ctx.Neigh[*node.Id].Addrs[splitted[1]]
 140                 if !known {
 141                         log.Fatalln("Unknown ADDR specified")
 142                 }
 143                 addrs = append(addrs, addr)
 144         } else {
 145                 for _, addr := range ctx.Neigh[*node.Id].Addrs {
 146                         addrs = append(addrs, addr)
 147                 }
 148         }
 149
 150         var onlyPkts map[[32]byte]bool
 151         if len(*onlyPktsRaw) > 0 {
 152                 splitted = strings.Split(*onlyPktsRaw, ",")
 153                 onlyPkts = make(map[[32]byte]bool, len(splitted))
 154                 for _, pktIdRaw := range splitted {
 155                         pktId, err := nncp.Base32Codec.DecodeString(pktIdRaw)
 156                         if err != nil {
 157                                 log.Fatalln("Invalid packet specified: ", err)
 158                         }
 159                         pktIdArr := new([32]byte)
 160                         copy(pktIdArr[:], pktId)
 161                         onlyPkts[*pktIdArr] = true
 162                 }
 163         }
 164
 165         ctx.Umask()
 166
 167         var autoTossFinish chan struct{}
 168         var autoTossBadCode chan bool
 169         if *autoToss {
 170                 autoTossFinish, autoTossBadCode = ctx.AutoToss(
 171                         node.Id,
 172                         nice,
 173                         *autoTossDoSeen,
 174                         *autoTossNoFile,
 175                         *autoTossNoFreq,
 176                         *autoTossNoExec,
 177                         *autoTossNoTrns,
 178                         *autoTossNoArea,
 179                 )
 180         }
 181
 182         badCode := !ctx.CallNode(
 183                 node,
 184                 addrs,
 185                 nice,
 186                 xxOnly,
 187                 *rxRate,
 188                 *txRate,
 189                 onlineDeadline,
 190                 maxOnlineTime,
 191                 *listOnly,
 192                 *noCK,
 193                 onlyPkts,
 194         )
 195
 196         if *autoToss {
 197                 close(autoTossFinish)
 198                 badCode = (<-autoTossBadCode) || badCode
 199         }
 200         nncp.SPCheckerWg.Wait()
 201         if badCode {
 202                 os.Exit(1)
 203         }
 204 }