src/cmd/nncp-file/main.go

   1 /*
   2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
   3 Copyright (C) 2016-2022 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 via NNCP.
  19 package main
  20
  21 import (
  22         "flag"
  23         "fmt"
  24         "log"
  25         "os"
  26         "strings"
  27
  28         "go.cypherpunks.ru/nncp/v8"
  29 )
  30
  31 func usage() {
  32         fmt.Fprintf(os.Stderr, nncp.UsageHeader())
  33         fmt.Fprintf(os.Stderr, "nncp-file -- send file\n\n")
  34         fmt.Fprintf(os.Stderr, "Usage: %s [options] SRC NODE:[DST]\n", os.Args[0])
  35         fmt.Fprintf(os.Stderr, "       %s [options] SRC %s:AREA:[DST]\nOptions:\n",
  36                 os.Args[0], nncp.AreaDir)
  37         flag.PrintDefaults()
  38         fmt.Fprint(os.Stderr, `
  39 If SRC equals to "-", then data is read from stdin.
  40 If SRC is directory, then create pax archive with its contents.
  41
  42 -minsize/-chunked take NODE's freq.minsize/freq.chunked configuration
  43 options by default. You can forcefully turn them off by specifying 0 value.
  44 `)
  45 }
  46
  47 func main() {
  48         var (
  49                 cfgPath      = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
  50                 niceRaw      = flag.String("nice", nncp.NicenessFmt(nncp.DefaultNiceFile), "Outbound packet niceness")
  51                 argMinSize   = flag.Int64("minsize", -1, "Minimal required resulting packet size, in KiB")
  52                 argMaxSize   = flag.Uint64("maxsize", 0, "Maximal allowable resulting packets size, in KiB")
  53                 argChunkSize = flag.Int64("chunked", -1, "Split file on specified size chunks, in KiB")
  54                 viaOverride  = flag.String("via", "", "Override Via path to destination node")
  55                 spoolPath    = flag.String("spool", "", "Override path to spool")
  56                 logPath      = flag.String("log", "", "Override path to logfile")
  57                 quiet        = flag.Bool("quiet", false, "Print only errors")
  58                 showPrgrs    = flag.Bool("progress", false, "Force progress showing")
  59                 omitPrgrs    = flag.Bool("noprogress", false, "Omit progress showing")
  60                 debug        = flag.Bool("debug", false, "Print debug messages")
  61                 version      = flag.Bool("version", false, "Print version information")
  62                 warranty     = flag.Bool("warranty", false, "Print warranty information")
  63         )
  64         log.SetFlags(log.Lshortfile)
  65         flag.Usage = usage
  66         flag.Parse()
  67         if *warranty {
  68                 fmt.Println(nncp.Warranty)
  69                 return
  70         }
  71         if *version {
  72                 fmt.Println(nncp.VersionGet())
  73                 return
  74         }
  75         if flag.NArg() != 2 {
  76                 usage()
  77                 os.Exit(1)
  78         }
  79         nice, err := nncp.NicenessParse(*niceRaw)
  80         if err != nil {
  81                 log.Fatalln(err)
  82         }
  83
  84         ctx, err := nncp.CtxFromCmdline(
  85                 *cfgPath,
  86                 *spoolPath,
  87                 *logPath,
  88                 *quiet,
  89                 *showPrgrs,
  90                 *omitPrgrs,
  91                 *debug,
  92         )
  93         if err != nil {
  94                 log.Fatalln("Error during initialization:", err)
  95         }
  96         if ctx.Self == nil {
  97                 log.Fatalln("Config lacks private keys")
  98         }
  99
 100         splitted := strings.Split(flag.Arg(1), ":")
 101         if len(splitted) < 2 {
 102                 usage()
 103                 os.Exit(1)
 104         }
 105         var areaId *nncp.AreaId
 106         var node *nncp.Node
 107         if splitted[0] == nncp.AreaDir {
 108                 if len(splitted) < 3 {
 109                         usage()
 110                         os.Exit(1)
 111                 }
 112                 areaId = ctx.AreaName2Id[splitted[1]]
 113                 if areaId == nil {
 114                         log.Fatalln("Unknown area specified")
 115                 }
 116                 node = ctx.Neigh[*ctx.SelfId]
 117                 splitted = splitted[2:]
 118         } else {
 119                 node, err = ctx.FindNode(splitted[0])
 120                 if err != nil {
 121                         log.Fatalln("Invalid NODE specified:", err)
 122                 }
 123                 splitted = splitted[1:]
 124         }
 125
 126         nncp.ViaOverride(*viaOverride, ctx, node)
 127         ctx.Umask()
 128
 129         var chunkSize int64
 130         if *argChunkSize < 0 {
 131                 chunkSize = node.FreqChunked
 132         } else if *argChunkSize > 0 {
 133                 chunkSize = *argChunkSize * 1024
 134         }
 135
 136         var minSize int64
 137         if *argMinSize < 0 {
 138                 minSize = node.FreqMinSize
 139         } else if *argMinSize > 0 {
 140                 minSize = *argMinSize * 1024
 141         }
 142
 143         maxSize := int64(nncp.MaxFileSize)
 144         if *argMaxSize > 0 {
 145                 maxSize = int64(*argMaxSize) * 1024
 146         }
 147
 148         if err = ctx.TxFile(
 149                 node,
 150                 nice,
 151                 flag.Arg(0),
 152                 strings.Join(splitted, ":"),
 153                 chunkSize,
 154                 minSize,
 155                 maxSize,
 156                 areaId,
 157         ); err != nil {
 158                 log.Fatalln(err)
 159         }
 160 }