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/>.
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 (ic *InetdConn) Read(p []byte) (n int, err error) {
50 func (ic *InetdConn) Write(p []byte) (n int, err error) {
54 func (ic *InetdConn) SetReadDeadline(t time.Time) error {
55 return ic.r.SetReadDeadline(t)
58 func (ic *InetdConn) SetWriteDeadline(t time.Time) error {
59 return ic.w.SetWriteDeadline(t)
62 func performSP(ctx *nncp.Ctx, conn nncp.ConnDeadlined, nice uint8) {
63 state := nncp.SPState{
67 if err := state.StartR(conn); err == nil {
68 ctx.LogI("call-start", nncp.SDS{"node": state.Node.Id}, "connected")
70 ctx.LogI("call-finish", nncp.SDS{
71 "node": state.Node.Id,
72 "duration": strconv.FormatInt(int64(state.Duration.Seconds()), 10),
73 "rxbytes": strconv.FormatInt(state.RxBytes, 10),
74 "txbytes": strconv.FormatInt(state.TxBytes, 10),
75 "rxspeed": strconv.FormatInt(state.RxSpeed, 10),
76 "txspeed": strconv.FormatInt(state.TxSpeed, 10),
80 if state.Node != nil {
81 nodeId = state.Node.Id.String()
83 ctx.LogE("call-start", nncp.SDS{"node": nodeId, "err": err}, "")
89 cfgPath = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
90 niceRaw = flag.String("nice", nncp.NicenessFmt(255), "Minimal required niceness")
91 bind = flag.String("bind", "[::]:5400", "Address to bind to")
92 inetd = flag.Bool("inetd", false, "Is it started as inetd service")
93 maxConn = flag.Int("maxconn", 128, "Maximal number of simultaneous connections")
94 spoolPath = flag.String("spool", "", "Override path to spool")
95 logPath = flag.String("log", "", "Override path to logfile")
96 quiet = flag.Bool("quiet", false, "Print only errors")
97 debug = flag.Bool("debug", false, "Print debug messages")
98 version = flag.Bool("version", false, "Print version information")
99 warranty = flag.Bool("warranty", false, "Print warranty information")
104 fmt.Println(nncp.Warranty)
108 fmt.Println(nncp.VersionGet())
111 nice, err := nncp.NicenessParse(*niceRaw)
116 ctx, err := nncp.CtxFromCmdline(*cfgPath, *spoolPath, *logPath, *quiet, *debug)
118 log.Fatalln("Error during initialization:", err)
121 log.Fatalln("Config lacks private keys")
126 conn := &InetdConn{os.Stdin, os.Stdout}
127 performSP(ctx, conn, nice)
131 ln, err := net.Listen("tcp", *bind)
133 log.Fatalln("Can not listen:", err)
135 ln = netutil.LimitListener(ln, *maxConn)
137 conn, err := ln.Accept()
139 log.Fatalln("Can not accept connection:", err)
141 ctx.LogD("daemon", nncp.SDS{"addr": conn.RemoteAddr()}, "accepted")
142 go func(conn net.Conn) {
143 performSP(ctx, conn, nice)