2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
3 Copyright (C) 2016-2021 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/>.
29 "github.com/dustin/go-humanize"
30 "go.cypherpunks.ru/nncp/v6"
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 {
63 if err := c.r.Close(); err != nil {
64 c.w.Close() // #nosec G104
72 conn nncp.ConnDeadlined,
75 nodeIdC chan *nncp.NodeId,
77 state := nncp.SPState{
82 if err := state.StartR(conn); err == nil {
85 nncp.LEs{{K: "Node", V: state.Node.Id}},
86 func(les nncp.LEs) string { return "Connection with " + state.Node.Name },
88 nodeIdC <- state.Node.Id
90 ctx.LogI("call-finished", nncp.LEs{
91 {K: "Node", V: state.Node.Id},
92 {K: "Duration", V: int64(state.Duration.Seconds())},
93 {K: "RxBytes", V: state.RxBytes},
94 {K: "TxBytes", V: state.TxBytes},
95 {K: "RxSpeed", V: state.RxSpeed},
96 {K: "TxSpeed", V: state.TxSpeed},
97 }, func(les nncp.LEs) string {
99 "Finished call with %s (%d:%d:%d): %s received (%s/sec), %s transferred (%s/sec)",
101 int(state.Duration.Hours()),
102 int(state.Duration.Minutes()),
103 int(state.Duration.Seconds()),
104 humanize.IBytes(uint64(state.RxBytes)),
105 humanize.IBytes(uint64(state.RxSpeed)),
106 humanize.IBytes(uint64(state.TxBytes)),
107 humanize.IBytes(uint64(state.TxSpeed)),
113 if state.Node == nil {
118 nodeId = state.Node.Id.String()
119 nodeName = state.Node.Name
120 nodeIdC <- state.Node.Id
124 nncp.LEs{{K: "Node", V: nodeId}},
125 func(les nncp.LEs) string { return "Connected to " + nodeName },
133 cfgPath = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
134 niceRaw = flag.String("nice", nncp.NicenessFmt(255), "Minimal required niceness")
135 bind = flag.String("bind", "[::]:5400", "Address to bind to")
136 inetd = flag.Bool("inetd", false, "Is it started as inetd service")
137 maxConn = flag.Int("maxconn", 128, "Maximal number of simultaneous connections")
138 noCK = flag.Bool("nock", false, "Do no checksum checking")
139 spoolPath = flag.String("spool", "", "Override path to spool")
140 logPath = flag.String("log", "", "Override path to logfile")
141 quiet = flag.Bool("quiet", false, "Print only errors")
142 showPrgrs = flag.Bool("progress", false, "Force progress showing")
143 omitPrgrs = flag.Bool("noprogress", false, "Omit progress showing")
144 debug = flag.Bool("debug", false, "Print debug messages")
145 version = flag.Bool("version", false, "Print version information")
146 warranty = flag.Bool("warranty", false, "Print warranty information")
148 autoToss = flag.Bool("autotoss", false, "Toss after call is finished")
149 autoTossDoSeen = flag.Bool("autotoss-seen", false, "Create .seen files during tossing")
150 autoTossNoFile = flag.Bool("autotoss-nofile", false, "Do not process \"file\" packets during tossing")
151 autoTossNoFreq = flag.Bool("autotoss-nofreq", false, "Do not process \"freq\" packets during tossing")
152 autoTossNoExec = flag.Bool("autotoss-noexec", false, "Do not process \"exec\" packets during tossing")
153 autoTossNoTrns = flag.Bool("autotoss-notrns", false, "Do not process \"trns\" packets during tossing")
158 fmt.Println(nncp.Warranty)
162 fmt.Println(nncp.VersionGet())
165 nice, err := nncp.NicenessParse(*niceRaw)
170 ctx, err := nncp.CtxFromCmdline(
180 log.Fatalln("Error during initialization:", err)
183 log.Fatalln("Config lacks private keys")
188 os.Stderr.Close() // #nosec G104
189 conn := &InetdConn{os.Stdin, os.Stdout}
190 nodeIdC := make(chan *nncp.NodeId)
191 go performSP(ctx, conn, nice, *noCK, nodeIdC)
193 var autoTossFinish chan struct{}
194 var autoTossBadCode chan bool
195 if *autoToss && nodeId != nil {
196 autoTossFinish, autoTossBadCode = ctx.AutoToss(
206 <-nodeIdC // call completion
208 close(autoTossFinish)
211 conn.Close() // #nosec G104
215 ln, err := net.Listen("tcp", *bind)
217 log.Fatalln("Can not listen:", err)
219 ln = netutil.LimitListener(ln, *maxConn)
221 conn, err := ln.Accept()
223 log.Fatalln("Can not accept connection:", err)
227 nncp.LEs{{K: "Addr", V: conn.RemoteAddr()}},
228 func(les nncp.LEs) string {
229 return "Accepted connection with " + conn.RemoteAddr().String()
232 go func(conn net.Conn) {
233 nodeIdC := make(chan *nncp.NodeId)
234 go performSP(ctx, conn, nice, *noCK, nodeIdC)
236 var autoTossFinish chan struct{}
237 var autoTossBadCode chan bool
238 if *autoToss && nodeId != nil {
239 autoTossFinish, autoTossBadCode = ctx.AutoToss(
249 <-nodeIdC // call completion
251 close(autoTossFinish)
254 conn.Close() // #nosec G104