/*
NNCP -- Node to Node copy, utilities for store-and-forward data exchange
-Copyright (C) 2016-2019 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"
- "go.cypherpunks.ru/nncp/v4"
+ "github.com/dustin/go-humanize"
+ "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 (ic *InetdConn) Read(p []byte) (n int, err error) {
- return ic.r.Read(p)
-}
-
-func (ic *InetdConn) Write(p []byte) (n int, err error) {
- return ic.w.Write(p)
-}
-
-func (ic *InetdConn) SetReadDeadline(t time.Time) error {
- return ic.r.SetReadDeadline(t)
-}
-
-func (ic *InetdConn) SetWriteDeadline(t time.Time) error {
- return ic.w.SetWriteDeadline(t)
-}
-
-func performSP(ctx *nncp.Ctx, conn nncp.ConnDeadlined, nice uint8) {
+func performSP(
+ ctx *nncp.Ctx,
+ conn nncp.ConnDeadlined,
+ addr string,
+ nice uint8,
+ noCK bool,
+ nodeIdC chan *nncp.NodeId,
+) {
state := nncp.SPState{
Ctx: ctx,
Nice: nice,
+ NoCK: noCK,
}
if err := state.StartR(conn); err == nil {
- ctx.LogI("call-start", nncp.SDS{"node": state.Node.Id}, "connected")
+ ctx.LogI(
+ "call-started",
+ nncp.LEs{{K: "Node", V: state.Node.Id}},
+ func(les nncp.LEs) string {
+ return fmt.Sprintf("Connection with %s (%s)", state.Node.Name, addr)
+ },
+ )
+ nodeIdC <- state.Node.Id
state.Wait()
- ctx.LogI("call-finish", nncp.SDS{
- "node": state.Node.Id,
- "duration": strconv.FormatInt(int64(state.Duration.Seconds()), 10),
- "rxbytes": strconv.FormatInt(state.RxBytes, 10),
- "txbytes": strconv.FormatInt(state.TxBytes, 10),
- "rxspeed": strconv.FormatInt(state.RxSpeed, 10),
- "txspeed": strconv.FormatInt(state.TxSpeed, 10),
- }, "")
+ ctx.LogI("call-finished", nncp.LEs{
+ {K: "Node", V: state.Node.Id},
+ {K: "Duration", V: int64(state.Duration.Seconds())},
+ {K: "RxBytes", V: state.RxBytes},
+ {K: "TxBytes", V: state.TxBytes},
+ {K: "RxSpeed", V: state.RxSpeed},
+ {K: "TxSpeed", V: state.TxSpeed},
+ }, func(les nncp.LEs) string {
+ return fmt.Sprintf(
+ "Finished call with %s (%d:%d:%d): %s received (%s/sec), %s transferred (%s/sec)",
+ state.Node.Name,
+ int(state.Duration.Hours()),
+ int(state.Duration.Minutes()),
+ int(state.Duration.Seconds())%60,
+ humanize.IBytes(uint64(state.RxBytes)),
+ humanize.IBytes(uint64(state.RxSpeed)),
+ humanize.IBytes(uint64(state.TxBytes)),
+ humanize.IBytes(uint64(state.TxSpeed)),
+ )
+ })
} else {
- nodeId := "unknown"
- if state.Node != nil {
+ var nodeId string
+ var nodeName string
+ if state.Node == nil {
+ nodeId = "unknown"
+ nodeName = "unknown"
+ nodeIdC <- nil
+ } else {
nodeId = state.Node.Id.String()
+ nodeName = state.Node.Name
+ nodeIdC <- state.Node.Id
}
- ctx.LogE("call-start", nncp.SDS{"node": nodeId, "err": err}, "")
+ ctx.LogI(
+ "call-started",
+ nncp.LEs{{K: "Node", V: nodeId}},
+ func(les nncp.LEs) string { return "Connected to " + nodeName },
+ )
}
+ 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() {
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")
spoolPath = flag.String("spool", "", "Override path to spool")
logPath = flag.String("log", "", "Override path to logfile")
quiet = flag.Bool("quiet", false, "Print only errors")
+ showPrgrs = flag.Bool("progress", false, "Force progress showing")
+ omitPrgrs = flag.Bool("noprogress", false, "Omit progress showing")
debug = flag.Bool("debug", false, "Print debug messages")
version = flag.Bool("version", false, "Print version information")
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")
+ 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")
+ autoTossNoTrns = flag.Bool("autotoss-notrns", false, "Do not process \"trns\" packets during tossing")
+ autoTossNoArea = flag.Bool("autotoss-noarea", false, "Do not process \"area\" packets during tossing")
)
+ log.SetFlags(log.Lshortfile)
flag.Usage = usage
flag.Parse()
if *warranty {
if err != nil {
log.Fatalln(err)
}
+ if *inetd {
+ *ucspi = true
+ }
- ctx, err := nncp.CtxFromCmdline(*cfgPath, *spoolPath, *logPath, *quiet, *debug)
+ ctx, err := nncp.CtxFromCmdline(
+ *cfgPath,
+ *spoolPath,
+ *logPath,
+ *quiet,
+ *showPrgrs,
+ *omitPrgrs,
+ *debug,
+ )
if err != nil {
log.Fatalln("Error during initialization:", err)
}
if ctx.Self == nil {
log.Fatalln("Config lacks private keys")
}
+ ctx.Umask()
- if *inetd {
+ if *ucspi {
os.Stderr.Close()
- conn := &InetdConn{os.Stdin, os.Stdout}
- performSP(ctx, conn, nice)
+ conn := &nncp.UCSPIConn{R: os.Stdin, W: os.Stdout}
+ nodeIdC := make(chan *nncp.NodeId)
+ 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
+ if *autoToss && nodeId != nil {
+ autoTossFinish, autoTossBadCode = ctx.AutoToss(
+ nodeId,
+ nice,
+ *autoTossDoSeen,
+ *autoTossNoFile,
+ *autoTossNoFreq,
+ *autoTossNoExec,
+ *autoTossNoTrns,
+ *autoTossNoArea,
+ )
+ }
+ <-nodeIdC // call completion
+ if *autoToss {
+ close(autoTossFinish)
+ <-autoTossBadCode
+ }
+ conn.Close()
return
}
- ln, err := net.Listen("tcp", *bind)
- if err != nil {
- log.Fatalln("Can not listen:", 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 {
+ if err = startMCDTx(ctx, port, true); err != nil {
+ log.Fatalln("Can not do MCD transmission:", err)
+ }
+ return
+ }
+
+ 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)
}
- ctx.LogD("daemon", nncp.SDS{"addr": conn.RemoteAddr()}, "accepted")
+ 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()}},
+ func(les nncp.LEs) string {
+ return "Accepted connection with " + conn.RemoteAddr().String()
+ },
+ )
go func(conn net.Conn) {
- performSP(ctx, conn, nice)
+ nodeIdC := make(chan *nncp.NodeId)
+ go performSP(ctx, conn, conn.RemoteAddr().String(), nice, *noCK, nodeIdC)
+ nodeId := <-nodeIdC
+ var autoTossFinish chan struct{}
+ var autoTossBadCode chan bool
+ if *autoToss && nodeId != nil {
+ autoTossFinish, autoTossBadCode = ctx.AutoToss(
+ nodeId,
+ nice,
+ *autoTossDoSeen,
+ *autoTossNoFile,
+ *autoTossNoFreq,
+ *autoTossNoExec,
+ *autoTossNoTrns,
+ *autoTossNoArea,
+ )
+ }
+ <-nodeIdC // call completion
+ if *autoToss {
+ close(autoTossFinish)
+ <-autoTossBadCode
+ }
conn.Close()
}(conn)
+
}
}