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, either version 3 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 // Process inbound NNCP packets.
  20 package main
  21
  22 import (
  23         "flag"
  24         "fmt"
  25         "log"
  26         "os"
  27         "time"
  28
  29         "cypherpunks.ru/nncp"
  30 )
  31
  32 func usage() {
  33         fmt.Fprintf(os.Stderr, nncp.UsageHeader())
  34         fmt.Fprintf(os.Stderr, "nncp-toss -- process inbound packets\n\n")
  35         fmt.Fprintf(os.Stderr, "Usage: %s [options]\nOptions:\n", os.Args[0])
  36         flag.PrintDefaults()
  37 }
  38
  39 func main() {
  40         var (
  41                 cfgPath   = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
  42                 nodeRaw   = flag.String("node", "", "Process only that node")
  43                 niceRaw   = flag.String("nice", nncp.NicenessFmt(255), "Minimal required niceness")
  44                 dryRun    = flag.Bool("dryrun", false, "Do not actually write any tossed data")
  45                 doSeen    = flag.Bool("seen", false, "Create .seen files")
  46                 cycle     = flag.Uint("cycle", 0, "Repeat tossing after N seconds in infinite loop")
  47                 noFile    = flag.Bool("nofile", false, "Do not process packets with type: file")
  48                 noFreq    = flag.Bool("nofreq", false, "Do not process packets with type: freq")
  49                 noExec    = flag.Bool("noexec", false, "Do not process packets with type: exec")
  50                 noTrns    = flag.Bool("notrns", false, "Do not process packets with type: transitional")
  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                 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         flag.Usage = usage
  59         flag.Parse()
  60         if *warranty {
  61                 fmt.Println(nncp.Warranty)
  62                 return
  63         }
  64         if *version {
  65                 fmt.Println(nncp.VersionGet())
  66                 return
  67         }
  68         nice, err := nncp.NicenessParse(*niceRaw)
  69         if err != nil {
  70                 log.Fatalln(err)
  71         }
  72
  73         ctx, err := nncp.CtxFromCmdline(*cfgPath, *spoolPath, *logPath, *quiet, *debug)
  74         if err != nil {
  75                 log.Fatalln("Error during initialization:", err)
  76         }
  77         if ctx.Self == nil {
  78                 log.Fatalln("Config lacks private keys")
  79         }
  80
  81         var nodeOnly *nncp.Node
  82         if *nodeRaw != "" {
  83                 nodeOnly, err = ctx.FindNode(*nodeRaw)
  84                 if err != nil {
  85                         log.Fatalln("Invalid -node specified:", err)
  86                 }
  87         }
  88
  89 Cycle:
  90         isBad := false
  91         for nodeId, node := range ctx.Neigh {
  92                 if nodeOnly != nil && nodeId != *nodeOnly.Id {
  93                         continue
  94                 }
  95                 isBad = ctx.Toss(
  96                         node.Id,
  97                         nice,
  98                         *dryRun,
  99                         *doSeen,
 100                         *noFile,
 101                         *noFreq,
 102                         *noExec,
 103                         *noTrns,
 104                 )
 105         }
 106         if *cycle > 0 {
 107                 time.Sleep(time.Duration(*cycle) * time.Second)
 108                 goto Cycle
 109         }
 110         if isBad {
 111                 os.Exit(1)
 112         }
 113 }