/*
NNCP -- Node to Node copy, utilities for store-and-forward data exchange
-Copyright (C) 2016-2021 Sergey Matveev <stargrave@stargrave.org>
+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
"log"
"net"
"os"
+ "regexp"
"strconv"
"strings"
"time"
"github.com/dustin/go-humanize"
- "go.cypherpunks.ru/nncp/v7"
+ "go.cypherpunks.ru/nncp/v8"
+ nncpYggdrasil "go.cypherpunks.ru/nncp/v8/yggdrasil"
"golang.org/x/net/netutil"
)
flag.PrintDefaults()
}
-type InetdConn struct {
- r *os.File
- w *os.File
-}
-
-func (c InetdConn) Read(p []byte) (n int, err error) {
- return c.r.Read(p)
-}
-
-func (c InetdConn) Write(p []byte) (n int, err error) {
- return c.w.Write(p)
-}
-
-func (c InetdConn) SetReadDeadline(t time.Time) error {
- return c.r.SetReadDeadline(t)
-}
-
-func (c InetdConn) SetWriteDeadline(t time.Time) error {
- return c.w.SetWriteDeadline(t)
-}
-
-func (c InetdConn) Close() error {
- if err := c.r.Close(); err != nil {
- c.w.Close() // #nosec G104
- return err
- }
- return c.w.Close()
-}
-
func performSP(
ctx *nncp.Ctx,
conn nncp.ConnDeadlined,
close(nodeIdC)
}
+func startMCDTx(ctx *nncp.Ctx, port int, zeroInterval bool) error {
+ ifis, err := net.Interfaces()
+ if err != nil {
+ return err
+ }
+ for ifiReString, secs := range ctx.MCDTxIfis {
+ ifiRe, err := regexp.CompilePOSIX(ifiReString)
+ if err != nil {
+ return err
+ }
+ var interval time.Duration
+ if !zeroInterval {
+ interval = time.Duration(secs) * time.Second
+ }
+ for _, ifi := range ifis {
+ if ifiRe.MatchString(ifi.Name) {
+ if err = ctx.MCDTx(ifi.Name, port, interval); err != nil {
+ return err
+ }
+ }
+ }
+ }
+ return nil
+}
+
func main() {
var (
cfgPath = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
niceRaw = flag.String("nice", nncp.NicenessFmt(255), "Minimal required niceness")
bind = flag.String("bind", "[::]:5400", "Address to bind to")
- inetd = flag.Bool("inetd", false, "Is it started as inetd service")
+ ucspi = flag.Bool("ucspi", false, "Is it started as UCSPI-TCP server")
+ inetd = flag.Bool("inetd", false, "Obsolete, use -ucspi")
+ yggdrasil = flag.String("yggdrasil", "", "Start Yggdrasil listener: yggdrasils://PRV[:PORT]?[bind=BIND][&pub=PUB][&peer=PEER][&mcast=REGEX[:PORT]]")
maxConn = flag.Int("maxconn", 128, "Maximal number of simultaneous connections")
noCK = flag.Bool("nock", false, "Do no checksum checking")
mcdOnce = flag.Bool("mcd-once", false, "Send MCDs once and quit")
warranty = flag.Bool("warranty", false, "Print warranty information")
autoToss = flag.Bool("autotoss", false, "Toss after call is finished")
- autoTossDoSeen = flag.Bool("autotoss-seen", false, "Create .seen files during tossing")
+ autoTossDoSeen = flag.Bool("autotoss-seen", false, "Create seen/ files during tossing")
autoTossNoFile = flag.Bool("autotoss-nofile", false, "Do not process \"file\" packets during tossing")
autoTossNoFreq = flag.Bool("autotoss-nofreq", false, "Do not process \"freq\" packets during tossing")
autoTossNoExec = flag.Bool("autotoss-noexec", false, "Do not process \"exec\" packets during tossing")
if err != nil {
log.Fatalln(err)
}
+ if *inetd {
+ *ucspi = true
+ }
ctx, err := nncp.CtxFromCmdline(
*cfgPath,
}
ctx.Umask()
- if *inetd {
- os.Stderr.Close() // #nosec G104
- conn := &InetdConn{os.Stdin, os.Stdout}
+ if *ucspi {
+ os.Stderr.Close()
+ conn := &nncp.UCSPIConn{R: os.Stdin, W: os.Stdout}
nodeIdC := make(chan *nncp.NodeId)
- go performSP(ctx, conn, "PIPE", nice, *noCK, nodeIdC)
+ addr := nncp.UCSPITCPRemoteAddr()
+ if addr == "" {
+ addr = "PIPE"
+ }
+ go performSP(ctx, conn, addr, nice, *noCK, nodeIdC)
nodeId := <-nodeIdC
var autoTossFinish chan struct{}
var autoTossBadCode chan bool
close(autoTossFinish)
<-autoTossBadCode
}
- conn.Close() // #nosec G104
+ conn.Close()
return
}
- cols := strings.Split(*bind, ":")
- port, err := strconv.Atoi(cols[len(cols)-1])
- if err != nil {
- log.Fatalln("Can not parse port:", err)
- }
+ conns := make(chan net.Conn)
+ if *bind != "" {
+ cols := strings.Split(*bind, ":")
+ port, err := strconv.Atoi(cols[len(cols)-1])
+ if err != nil {
+ log.Fatalln("Can not parse port:", err)
+ }
- if *mcdOnce {
- for ifiName := range ctx.MCDTxIfis {
- if err = ctx.MCDTx(ifiName, port, 0); err != nil {
+ if *mcdOnce {
+ if err = startMCDTx(ctx, port, true); err != nil {
log.Fatalln("Can not do MCD transmission:", err)
}
+ return
}
- return
- }
-
- ln, err := net.Listen("tcp", *bind)
- if err != nil {
- log.Fatalln("Can not listen:", err)
- }
- for ifiName, secs := range ctx.MCDTxIfis {
- if err = ctx.MCDTx(ifiName, port, time.Duration(secs)*time.Second); err != nil {
- log.Fatalln("Can not run MCD transmission:", err)
+ ln, err := net.Listen("tcp", *bind)
+ if err != nil {
+ log.Fatalln("Can not listen:", err)
+ }
+ if err = startMCDTx(ctx, port, false); err != nil {
+ log.Fatalln("Can not do MCD transmission:", err)
}
+ ln = netutil.LimitListener(ln, *maxConn)
+ go func() {
+ for {
+ conn, err := ln.Accept()
+ if err != nil {
+ log.Fatalln("Can not accept connection on TCP:", err)
+ }
+ conns <- conn
+ }
+ }()
}
- ln = netutil.LimitListener(ln, *maxConn)
- for {
- conn, err := ln.Accept()
+ if *yggdrasil != "" {
+ ln, err := nncpYggdrasil.NewListener(ctx.YggdrasilAliases, *yggdrasil)
if err != nil {
- log.Fatalln("Can not accept connection:", err)
+ log.Fatalln("Can not listen:", err)
}
+ ln = netutil.LimitListener(ln, *maxConn)
+ go func() {
+ for {
+ conn, err := ln.Accept()
+ if err != nil {
+ log.Fatalln("Can not accept connection on Yggdrasil:", err)
+ }
+ conns <- conn
+ }
+ }()
+ }
+
+ for conn := range conns {
ctx.LogD(
"daemon-accepted",
nncp.LEs{{K: "Addr", V: conn.RemoteAddr()}},
close(autoTossFinish)
<-autoTossBadCode
}
- conn.Close() // #nosec G104
+ conn.Close()
}(conn)
+
}
}