2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
3 Copyright (C) 2016-2019 Sergey Matveev <stargrave@stargrave.org>
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.
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.
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/>.
30 "go.cypherpunks.ru/nncp/v5"
31 "golang.org/x/net/netutil"
35 fmt.Fprintf(os.Stderr, nncp.UsageHeader())
36 fmt.Fprintf(os.Stderr, "nncp-daemon -- TCP daemon\n\n")
37 fmt.Fprintf(os.Stderr, "Usage: %s [options]\nOptions:\n", os.Args[0])
41 type InetdConn struct {
46 func (c InetdConn) Read(p []byte) (n int, err error) {
50 func (c InetdConn) Write(p []byte) (n int, err error) {
54 func (c InetdConn) SetReadDeadline(t time.Time) error {
55 return c.r.SetReadDeadline(t)
58 func (c InetdConn) SetWriteDeadline(t time.Time) error {
59 return c.w.SetWriteDeadline(t)
62 func (c InetdConn) Close() error {
66 func performSP(ctx *nncp.Ctx, conn nncp.ConnDeadlined, nice uint8) {
67 state := nncp.SPState{
71 if err := state.StartR(conn); err == nil {
72 ctx.LogI("call-start", nncp.SDS{"node": state.Node.Id}, "connected")
74 ctx.LogI("call-finish", nncp.SDS{
75 "node": state.Node.Id,
76 "duration": strconv.FormatInt(int64(state.Duration.Seconds()), 10),
77 "rxbytes": strconv.FormatInt(state.RxBytes, 10),
78 "txbytes": strconv.FormatInt(state.TxBytes, 10),
79 "rxspeed": strconv.FormatInt(state.RxSpeed, 10),
80 "txspeed": strconv.FormatInt(state.TxSpeed, 10),
84 if state.Node != nil {
85 nodeId = state.Node.Id.String()
87 ctx.LogE("call-start", nncp.SDS{"node": nodeId, "err": err}, "")
93 cfgPath = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
94 niceRaw = flag.String("nice", nncp.NicenessFmt(255), "Minimal required niceness")
95 bind = flag.String("bind", "[::]:5400", "Address to bind to")
96 inetd = flag.Bool("inetd", false, "Is it started as inetd service")
97 maxConn = flag.Int("maxconn", 128, "Maximal number of simultaneous connections")
98 spoolPath = flag.String("spool", "", "Override path to spool")
99 logPath = flag.String("log", "", "Override path to logfile")
100 quiet = flag.Bool("quiet", false, "Print only errors")
101 debug = flag.Bool("debug", false, "Print debug messages")
102 version = flag.Bool("version", false, "Print version information")
103 warranty = flag.Bool("warranty", false, "Print warranty information")
108 fmt.Println(nncp.Warranty)
112 fmt.Println(nncp.VersionGet())
115 nice, err := nncp.NicenessParse(*niceRaw)
120 ctx, err := nncp.CtxFromCmdline(*cfgPath, *spoolPath, *logPath, *quiet, *debug)
122 log.Fatalln("Error during initialization:", err)
125 log.Fatalln("Config lacks private keys")
131 conn := &InetdConn{os.Stdin, os.Stdout}
132 performSP(ctx, conn, nice)
136 ln, err := net.Listen("tcp", *bind)
138 log.Fatalln("Can not listen:", err)
140 ln = netutil.LimitListener(ln, *maxConn)
142 conn, err := ln.Accept()
144 log.Fatalln("Can not accept connection:", err)
146 ctx.LogD("daemon", nncp.SDS{"addr": conn.RemoteAddr()}, "accepted")
147 go func(conn net.Conn) {
148 performSP(ctx, conn, nice)