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.Fprintf(os.Stderr, "nncp-file -- send file\n\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                 viaOverride = flag.String("via", "", "Override Via path to destination node")
  49                 spoolPath   = flag.String("spool", "", "Override path to spool")
  50                 logPath     = flag.String("log", "", "Override path to logfile")
  51                 quiet       = flag.Bool("quiet", false, "Print only errors")
  52                 debug       = flag.Bool("debug", false, "Print debug messages")
  53                 version     = flag.Bool("version", false, "Print version information")
  54                 warranty    = flag.Bool("warranty", false, "Print warranty information")
  55         )
  56         flag.Usage = usage
  57         flag.Parse()
  58         if *warranty {
  59                 fmt.Println(nncp.Warranty)
  60                 return
  61         }
  62         if *version {
  63                 fmt.Println(nncp.VersionGet())
  64                 return
  65         }
  66         if flag.NArg() != 2 {
  67                 usage()
  68                 os.Exit(1)
  69         }
  70         if *niceRaw < 1 || *niceRaw > 255 {
  71                 log.Fatalln("-nice must be between 1 and 255")
  72         }
  73         nice := uint8(*niceRaw)
  74
  75         ctx, err := nncp.CtxFromCmdline(*cfgPath, *spoolPath, *logPath, *quiet, *debug)
  76         if err != nil {
  77                 log.Fatalln("Error during initialization:", err)
  78         }
  79         if ctx.Self == nil {
  80                 log.Fatalln("Config lacks private keys")
  81         }
  82
  83         splitted := strings.SplitN(flag.Arg(1), ":", 2)
  84         if len(splitted) != 2 {
  85                 usage()
  86                 os.Exit(1)
  87         }
  88         node, err := ctx.FindNode(splitted[0])
  89         if err != nil {
  90                 log.Fatalln("Invalid NODE specified:", err)
  91         }
  92
  93         if *viaOverride != "" {
  94                 vias := make([]*nncp.NodeId, 0, strings.Count(*viaOverride, ",")+1)
  95                 for _, via := range strings.Split(*viaOverride, ",") {
  96                         foundNodeId, err := ctx.FindNode(via)
  97                         if err != nil {
  98                                 log.Fatalln("Invalid Via node specified:", err)
  99                         }
 100                         vias = append(vias, foundNodeId.Id)
 101                 }
 102                 node.Via = vias
 103         }
 104
 105         if *chunkSize == 0 {
 106                 err = ctx.TxFile(
 107                         node,
 108                         nice,
 109                         flag.Arg(0),
 110                         splitted[1],
 111                         int64(*minSize)*1024,
 112                 )
 113         } else {
 114                 err = ctx.TxFileChunked(
 115                         node,
 116                         nice,
 117                         flag.Arg(0),
 118                         splitted[1],
 119                         int64(*minSize)*1024,
 120                         int64(*chunkSize)*1024,
 121                 )
 122         }
 123         if err != nil {
 124                 log.Fatalln(err)
 125         }
 126 }