src/cmd/nncp-freq/main.go

   1 /*
   2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
   3 Copyright (C) 2016-2023 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/v8"
  30 )
  31
  32 func usage() {
  33         fmt.Fprint(os.Stderr, "nncp-freq -- send file request\n\n")
  34         fmt.Fprintf(os.Stderr, "Usage: %s [options] NODE:SRC [DST]\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                 niceRaw      = flag.String("nice", nncp.NicenessFmt(nncp.DefaultNiceFreq), "Outbound packet niceness")
  42                 replyNiceRaw = flag.String("replynice", nncp.NicenessFmt(nncp.DefaultNiceFile), "Reply file packet niceness")
  43                 minSize      = flag.Uint64("minsize", 0, "Minimal required resulting packet size, in KiB")
  44                 viaOverride  = flag.String("via", "", "Override Via path to destination node")
  45                 spoolPath    = flag.String("spool", "", "Override path to spool")
  46                 logPath      = flag.String("log", "", "Override path to logfile")
  47                 quiet        = flag.Bool("quiet", false, "Print only errors")
  48                 showPrgrs    = flag.Bool("progress", false, "Force progress showing")
  49                 omitPrgrs    = flag.Bool("noprogress", false, "Omit progress showing")
  50                 debug        = flag.Bool("debug", false, "Print debug messages")
  51                 version      = flag.Bool("version", false, "Print version information")
  52                 warranty     = flag.Bool("warranty", false, "Print warranty information")
  53         )
  54         log.SetFlags(log.Lshortfile)
  55         flag.Usage = usage
  56         flag.Parse()
  57         if *warranty {
  58                 fmt.Println(nncp.Warranty)
  59                 return
  60         }
  61         if *version {
  62                 fmt.Println(nncp.VersionGet())
  63                 return
  64         }
  65         if flag.NArg() == 0 {
  66                 usage()
  67                 os.Exit(1)
  68         }
  69         nice, err := nncp.NicenessParse(*niceRaw)
  70         if err != nil {
  71                 log.Fatalln(err)
  72         }
  73         replyNice, err := nncp.NicenessParse(*replyNiceRaw)
  74         if err != nil {
  75                 log.Fatalln(err)
  76         }
  77
  78         ctx, err := nncp.CtxFromCmdline(
  79                 *cfgPath,
  80                 *spoolPath,
  81                 *logPath,
  82                 *quiet,
  83                 *showPrgrs,
  84                 *omitPrgrs,
  85                 *debug,
  86         )
  87         if err != nil {
  88                 log.Fatalln("Error during initialization:", err)
  89         }
  90         if ctx.Self == nil {
  91                 log.Fatalln("Config lacks private keys")
  92         }
  93
  94         splitted := strings.SplitN(flag.Arg(0), ":", 2)
  95         if len(splitted) != 2 {
  96                 usage()
  97                 os.Exit(1)
  98         }
  99         node, err := ctx.FindNode(splitted[0])
 100         if err != nil {
 101                 log.Fatalln("Invalid NODE specified:", err)
 102         }
 103
 104         nncp.ViaOverride(*viaOverride, ctx, node)
 105         ctx.Umask()
 106
 107         var dst string
 108         if flag.NArg() == 2 {
 109                 dst = flag.Arg(1)
 110         } else {
 111                 dst = filepath.Base(splitted[1])
 112         }
 113
 114         if err = ctx.TxFreq(
 115                 node,
 116                 nice,
 117                 replyNice,
 118                 splitted[1],
 119                 dst,
 120                 int64(*minSize)*1024,
 121         ); err != nil {
 122                 log.Fatalln(err)
 123         }
 124 }