src/cmd/nncp-freq/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 // Send file request via NNCP.
  19 package main
  20
  21 import (
  22         "flag"
  23         "fmt"
  24         "log"
  25         "os"
  26         "path/filepath"
  27         "strings"
  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-freq -- send file request\n\n")
  35         fmt.Fprintf(os.Stderr, "Usage: %s [options] NODE:SRC [DST]\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                 niceRaw      = flag.String("nice", nncp.NicenessFmt(nncp.DefaultNiceFreq), "Outbound packet niceness")
  43                 replyNiceRaw = flag.String("replynice", nncp.NicenessFmt(nncp.DefaultNiceFile), "Reply file packet niceness")
  44                 minSize      = flag.Uint64("minsize", 0, "Minimal required resulting packet size, in KiB")
  45                 viaOverride  = flag.String("via", "", "Override Via path to destination node")
  46                 spoolPath    = flag.String("spool", "", "Override path to spool")
  47                 logPath      = flag.String("log", "", "Override path to logfile")
  48                 quiet        = flag.Bool("quiet", false, "Print only errors")
  49                 debug        = flag.Bool("debug", false, "Print debug messages")
  50                 version      = flag.Bool("version", false, "Print version information")
  51                 warranty     = flag.Bool("warranty", false, "Print warranty information")
  52         )
  53         flag.Usage = usage
  54         flag.Parse()
  55         if *warranty {
  56                 fmt.Println(nncp.Warranty)
  57                 return
  58         }
  59         if *version {
  60                 fmt.Println(nncp.VersionGet())
  61                 return
  62         }
  63         if flag.NArg() == 0 {
  64                 usage()
  65                 os.Exit(1)
  66         }
  67         nice, err := nncp.NicenessParse(*niceRaw)
  68         if err != nil {
  69                 log.Fatalln(err)
  70         }
  71         replyNice, err := nncp.NicenessParse(*replyNiceRaw)
  72         if err != nil {
  73                 log.Fatalln(err)
  74         }
  75
  76         ctx, err := nncp.CtxFromCmdline(*cfgPath, *spoolPath, *logPath, *quiet, *debug)
  77         if err != nil {
  78                 log.Fatalln("Error during initialization:", err)
  79         }
  80         if ctx.Self == nil {
  81                 log.Fatalln("Config lacks private keys")
  82         }
  83
  84         splitted := strings.SplitN(flag.Arg(0), ":", 2)
  85         if len(splitted) != 2 {
  86                 usage()
  87                 os.Exit(1)
  88         }
  89         node, err := ctx.FindNode(splitted[0])
  90         if err != nil {
  91                 log.Fatalln("Invalid NODE specified:", err)
  92         }
  93
  94         nncp.ViaOverride(*viaOverride, ctx, node)
  95         ctx.Umask()
  96
  97         var dst string
  98         if flag.NArg() == 2 {
  99                 dst = flag.Arg(1)
 100         } else {
 101                 dst = filepath.Base(splitted[1])
 102         }
 103
 104         if err = ctx.TxFreq(
 105                 node,
 106                 nice,
 107                 replyNice,
 108                 splitted[1],
 109                 dst,
 110                 int64(*minSize)*1024,
 111         ); err != nil {
 112                 log.Fatalln(err)
 113         }
 114 }