src/cypherpunks.ru/nncp/cmd/nncp-toss/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 // Process inbound NNCP packets.
  19 package main
  20
  21 import (
  22         "flag"
  23         "fmt"
  24         "log"
  25         "os"
  26         "time"
  27
  28         "cypherpunks.ru/nncp"
  29 )
  30
  31 func usage() {
  32         fmt.Fprintf(os.Stderr, nncp.UsageHeader())
  33         fmt.Fprintf(os.Stderr, "nncp-toss -- process inbound packets\n\n")
  34         fmt.Fprintf(os.Stderr, "Usage: %s [options]\nOptions:\n", os.Args[0])
  35         flag.PrintDefaults()
  36 }
  37
  38 func main() {
  39         var (
  40                 cfgPath   = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
  41                 nodeRaw   = flag.String("node", "", "Process only that node")
  42                 niceRaw   = flag.String("nice", nncp.NicenessFmt(255), "Minimal required niceness")
  43                 dryRun    = flag.Bool("dryrun", false, "Do not actually write any tossed data")
  44                 doSeen    = flag.Bool("seen", false, "Create .seen files")
  45                 cycle     = flag.Uint("cycle", 0, "Repeat tossing after N seconds in infinite loop")
  46                 noFile    = flag.Bool("nofile", false, "Do not process packets with type: file")
  47                 noFreq    = flag.Bool("nofreq", false, "Do not process packets with type: freq")
  48                 noExec    = flag.Bool("noexec", false, "Do not process packets with type: exec")
  49                 noTrns    = flag.Bool("notrns", false, "Do not process packets with type: transitional")
  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                 debug     = flag.Bool("debug", false, "Print debug messages")
  54                 version   = flag.Bool("version", false, "Print version information")
  55                 warranty  = flag.Bool("warranty", false, "Print warranty information")
  56         )
  57         flag.Usage = usage
  58         flag.Parse()
  59         if *warranty {
  60                 fmt.Println(nncp.Warranty)
  61                 return
  62         }
  63         if *version {
  64                 fmt.Println(nncp.VersionGet())
  65                 return
  66         }
  67         nice, err := nncp.NicenessParse(*niceRaw)
  68         if err != nil {
  69                 log.Fatalln(err)
  70         }
  71
  72         ctx, err := nncp.CtxFromCmdline(*cfgPath, *spoolPath, *logPath, *quiet, *debug)
  73         if err != nil {
  74                 log.Fatalln("Error during initialization:", err)
  75         }
  76         if ctx.Self == nil {
  77                 log.Fatalln("Config lacks private keys")
  78         }
  79
  80         var nodeOnly *nncp.Node
  81         if *nodeRaw != "" {
  82                 nodeOnly, err = ctx.FindNode(*nodeRaw)
  83                 if err != nil {
  84                         log.Fatalln("Invalid -node specified:", err)
  85                 }
  86         }
  87
  88 Cycle:
  89         isBad := false
  90         for nodeId, node := range ctx.Neigh {
  91                 if nodeOnly != nil && nodeId != *nodeOnly.Id {
  92                         continue
  93                 }
  94                 isBad = ctx.Toss(
  95                         node.Id,
  96                         nice,
  97                         *dryRun,
  98                         *doSeen,
  99                         *noFile,
 100                         *noFreq,
 101                         *noExec,
 102                         *noTrns,
 103                 )
 104         }
 105         if *cycle > 0 {
 106                 time.Sleep(time.Duration(*cycle) * time.Second)
 107                 goto Cycle
 108         }
 109         if isBad {
 110                 os.Exit(1)
 111         }
 112 }