--- /dev/null
+/*
+NNCP -- Node to Node copy, utilities for store-and-forward data exchange
+Copyright (C) 2016-2021 Sergey Matveev <stargrave@stargrave.org>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, version 3 of the License.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+// Wrap existing encrypted packet to transition ones.
+package main
+
+import (
+ "flag"
+ "fmt"
+ "io"
+ "log"
+ "os"
+ "path/filepath"
+ "strings"
+
+ "go.cypherpunks.ru/nncp/v7"
+)
+
+func usage() {
+ fmt.Fprintf(os.Stderr, nncp.UsageHeader())
+ fmt.Fprintf(os.Stderr, "nncp-trns -- transit existing encrypted packet\n\n")
+ fmt.Fprintf(os.Stderr, "Usage: %s [options] -via NODEx[,...] NODE:PKT\n", os.Args[0])
+ fmt.Fprintf(os.Stderr, " (to transit SPOOL/NODE/tx/PKT)\n")
+ fmt.Fprintf(os.Stderr, " %s [options] -via NODEx[,...] /path/to/PKT\nOptions:\n",
+ os.Args[0])
+ flag.PrintDefaults()
+}
+
+func main() {
+ var (
+ cfgPath = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
+ niceRaw = flag.String("nice", nncp.NicenessFmt(nncp.DefaultNiceFile), "Outbound packet niceness")
+ viaOverride = flag.String("via", "", "Override Via path to destination node")
+ spoolPath = flag.String("spool", "", "Override path to spool")
+ logPath = flag.String("log", "", "Override path to logfile")
+ quiet = flag.Bool("quiet", false, "Print only errors")
+ showPrgrs = flag.Bool("progress", false, "Force progress showing")
+ omitPrgrs = flag.Bool("noprogress", false, "Omit progress showing")
+ debug = flag.Bool("debug", false, "Print debug messages")
+ version = flag.Bool("version", false, "Print version information")
+ warranty = flag.Bool("warranty", false, "Print warranty information")
+ )
+ log.SetFlags(log.Lshortfile)
+ flag.Usage = usage
+ flag.Parse()
+ if *warranty {
+ fmt.Println(nncp.Warranty)
+ return
+ }
+ if *version {
+ fmt.Println(nncp.VersionGet())
+ return
+ }
+ if flag.NArg() != 1 {
+ usage()
+ os.Exit(1)
+ }
+ nice, err := nncp.NicenessParse(*niceRaw)
+ if err != nil {
+ log.Fatalln(err)
+ }
+
+ ctx, err := nncp.CtxFromCmdline(
+ *cfgPath,
+ *spoolPath,
+ *logPath,
+ *quiet,
+ *showPrgrs,
+ *omitPrgrs,
+ *debug,
+ )
+ if err != nil {
+ log.Fatalln("Error during initialization:", err)
+ }
+ if ctx.Self == nil {
+ log.Fatalln("Config lacks private keys")
+ }
+ ctx.Umask()
+
+ var pktPath string
+ var pktName string
+ if _, err = os.Stat(flag.Arg(0)); err == nil {
+ pktPath = flag.Arg(0)
+ pktName = filepath.Base(pktPath)
+ } else {
+ splitted := strings.Split(flag.Arg(0), ":")
+ if len(splitted) != 2 {
+ log.Fatalln("Invalid NODE:PKT specification")
+ }
+ node, err := ctx.FindNode(splitted[0])
+ if err != nil {
+ log.Fatalln("Invalid NODE specified:", err)
+ }
+ pktPath = filepath.Join(
+ ctx.Spool, node.Id.String(), string(nncp.TTx), splitted[1],
+ )
+ pktName = filepath.Base(splitted[1])
+ }
+
+ fd, err := os.Open(pktPath)
+ if err != nil {
+ log.Fatalln(err)
+ }
+ fi, err := fd.Stat()
+ if err != nil {
+ log.Fatalln(err)
+ }
+ pktEnc, _, err := ctx.HdrRead(fd)
+ if err != nil {
+ log.Fatalln(err)
+ }
+ if _, err = fd.Seek(0, io.SeekStart); err != nil {
+ log.Fatalln(err)
+ }
+
+ node := ctx.Neigh[*pktEnc.Recipient]
+ nncp.ViaOverride(*viaOverride, ctx, node)
+ via := node.Via[:len(node.Via)-1]
+ node = ctx.Neigh[*node.Via[len(node.Via)-1]]
+ node.Via = via
+
+ pktTrns, err := nncp.NewPkt(nncp.PktTypeTrns, 0, pktEnc.Recipient[:])
+ if err != nil {
+ panic(err)
+ }
+ if _, err = ctx.Tx(node, pktTrns, nice, fi.Size(), 0, fd, pktName, nil); err != nil {
+ log.Fatalln(err)
+ }
+}