+/*
+NNCP -- Node to Node copy, utilities for store-and-forward data exchange
+Copyright (C) 2016-2022 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/>.
+*/
+
+// Send packet receipt acknowledgement via NNCP.
+package main
+
+import (
+ "flag"
+ "fmt"
+ "log"
+ "os"
+ "path/filepath"
+
+ "go.cypherpunks.ru/nncp/v8"
+)
+
+func usage() {
+ fmt.Fprintf(os.Stderr, nncp.UsageHeader())
+ fmt.Fprintf(os.Stderr, "nncp-ack -- send packet receipt acknowledgement\n\n")
+ fmt.Fprintf(os.Stderr, "Usage: %s [options] NODE [PKT|rx]\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.DefaultNiceFreq), "Outbound packet niceness")
+ minSizeRaw = flag.Uint64("minsize", 0, "Minimal required resulting packet size, in KiB")
+ 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() != 2 {
+ 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")
+ }
+
+ node, err := ctx.FindNode(flag.Arg(0))
+ if err != nil {
+ log.Fatalln("Invalid NODE specified:", err)
+ }
+
+ nncp.ViaOverride(*viaOverride, ctx, node)
+ ctx.Umask()
+ minSize := int64(*minSizeRaw) * 1024
+
+ if flag.Arg(1) == string(nncp.TRx) {
+ for job := range ctx.Jobs(node.Id, nncp.TRx) {
+ pktName := filepath.Base(job.Path)
+ if err = ctx.TxACK(node, nice, pktName, minSize); err != nil {
+ log.Fatalln(err)
+ }
+ }
+ } else {
+ if err = ctx.TxACK(node, nice, flag.Arg(1), minSize); err != nil {
+ log.Fatalln(err)
+ }
+ }
+}