src/cypherpunks.ru/nncp/cmd/nncp-file/main.go

   1 /*
   2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
   3 Copyright (C) 2016-2018 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 // Send file via NNCP
  20 package main
  21
  22 import (
  23         "flag"
  24         "fmt"
  25         "log"
  26         "os"
  27         "strings"
  28
  29         "cypherpunks.ru/nncp"
  30 )
  31
  32 func usage() {
  33         fmt.Fprintf(os.Stderr, nncp.UsageHeader())
  34         fmt.Fprintln(os.Stderr, "nncp-file -- send file\n")
  35         fmt.Fprintf(os.Stderr, "Usage: %s [options] SRC NODE:[DST]\nOptions:\n", os.Args[0])
  36         flag.PrintDefaults()
  37         fmt.Fprint(os.Stderr, `
  38 If SRC equals to -, then read data from stdin to temporary file.
  39 `)
  40 }
  41
  42 func main() {
  43         var (
  44                 cfgPath   = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
  45                 niceRaw   = flag.Int("nice", nncp.DefaultNiceFile, "Outbound packet niceness")
  46                 minSize   = flag.Uint64("minsize", 0, "Minimal required resulting packet size, in KiB")
  47                 chunkSize = flag.Uint64("chunked", 0, "Split file on specified size chunks, in KiB")
  48                 spoolPath = flag.String("spool", "", "Override path to spool")
  49                 logPath   = flag.String("log", "", "Override path to logfile")
  50                 quiet     = flag.Bool("quiet", false, "Print only errors")
  51                 debug     = flag.Bool("debug", false, "Print debug messages")
  52                 version   = flag.Bool("version", false, "Print version information")
  53                 warranty  = flag.Bool("warranty", false, "Print warranty information")
  54         )
  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() != 2 {
  66                 usage()
  67                 os.Exit(1)
  68         }
  69         if *niceRaw < 1 || *niceRaw > 255 {
  70                 log.Fatalln("-nice must be between 1 and 255")
  71         }
  72         nice := uint8(*niceRaw)
  73
  74         ctx, err := nncp.CtxFromCmdline(*cfgPath, *spoolPath, *logPath, *quiet, *debug)
  75         if err != nil {
  76                 log.Fatalln("Error during initialization:", err)
  77         }
  78         if ctx.Self == nil {
  79                 log.Fatalln("Config lacks private keys")
  80         }
  81
  82         splitted := strings.SplitN(flag.Arg(1), ":", 2)
  83         if len(splitted) != 2 {
  84                 usage()
  85                 os.Exit(1)
  86         }
  87         node, err := ctx.FindNode(splitted[0])
  88         if err != nil {
  89                 log.Fatalln("Invalid NODE specified:", err)
  90         }
  91
  92         if *chunkSize == 0 {
  93                 err = ctx.TxFile(
  94                         node,
  95                         nice,
  96                         flag.Arg(0),
  97                         splitted[1],
  98                         int64(*minSize)*1024,
  99                 )
 100         } else {
 101                 err = ctx.TxFileChunked(
 102                         node,
 103                         nice,
 104                         flag.Arg(0),
 105                         splitted[1],
 106                         int64(*minSize)*1024,
 107                         int64(*chunkSize)*1024,
 108                 )
 109         }
 110         if err != nil {
 111                 log.Fatalln(err)
 112         }
 113 }