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