2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
3 Copyright (C) 2016-2017 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, either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
32 "golang.org/x/net/netutil"
36 fmt.Fprintf(os.Stderr, nncp.UsageHeader())
37 fmt.Fprintln(os.Stderr, "nncp-daemon -- TCP daemon\n")
38 fmt.Fprintf(os.Stderr, "Usage: %s [options]\nOptions:\n", os.Args[0])
44 cfgPath = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
45 niceRaw = flag.Int("nice", 255, "Minimal required niceness")
46 bind = flag.String("bind", "[::]:5400", "Address to bind to")
47 maxConn = flag.Int("maxconn", 128, "Maximal number of simultaneous connections")
48 quiet = flag.Bool("quiet", false, "Print only errors")
49 debug = flag.Bool("debug", false, "Print debug messages")
50 version = flag.Bool("version", false, "Print version information")
51 warranty = flag.Bool("warranty", false, "Print warranty information")
56 fmt.Println(nncp.Warranty)
60 fmt.Println(nncp.VersionGet())
63 if *niceRaw < 1 || *niceRaw > 255 {
64 log.Fatalln("-nice must be between 1 and 255")
66 nice := uint8(*niceRaw)
68 cfgRaw, err := ioutil.ReadFile(nncp.CfgPathFromEnv(cfgPath))
70 log.Fatalln("Can not read config:", err)
72 ctx, err := nncp.CfgParse(cfgRaw)
74 log.Fatalln("Can not parse config:", err)
77 log.Fatalln("Config lacks private keys")
82 ln, err := net.Listen("tcp", *bind)
84 log.Fatalln("Can not listen:", err)
86 ln = netutil.LimitListener(ln, *maxConn)
88 conn, err := ln.Accept()
90 log.Fatalln("Can not accept connection:", err)
92 ctx.LogD("daemon", nncp.SDS{"addr": conn.RemoteAddr()}, "accepted")
93 go func(conn net.Conn) {
94 state, err := ctx.StartR(conn, nice, "")
96 ctx.LogI("call-start", nncp.SDS{"node": state.Node.Id}, "connected")
98 ctx.LogI("call-finish", nncp.SDS{
99 "node": state.Node.Id,
100 "duration": strconv.FormatInt(int64(state.Duration.Seconds()), 10),
101 "rxbytes": strconv.FormatInt(state.RxBytes, 10),
102 "txbytes": strconv.FormatInt(state.TxBytes, 10),
103 "rxspeed": strconv.FormatInt(state.RxSpeed, 10),
104 "txspeed": strconv.FormatInt(state.TxSpeed, 10),
108 if state != nil && state.Node != nil {
109 nodeId = state.Node.Id.String()
111 ctx.LogE("call-start", nncp.SDS{"node": nodeId, "err": err}, "")