added systemd socket activation
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##
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## Copyright (c) 2016 Christian Pointner <equinox@realraum.at>
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## All rights reserved.
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##
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## Redistribution and use in source and binary forms, with or without
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## modification, are permitted provided that the following conditions are met:
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## * Redistributions of source code must retain the above copyright
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## notice, this list of conditions and the following disclaimer.
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## * Redistributions in binary form must reproduce the above copyright
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## notice, this list of conditions and the following disclaimer in the
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## documentation and/or other materials provided with the distribution.
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## * Neither the name of telgo nor the names of its contributors may be
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## used to endorse or promote products derived from this software without
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## specific prior written permission.
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##
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## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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## ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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## WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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## DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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## FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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## DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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## SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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## CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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## OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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##
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GOCMD := go
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ifdef GOROOT
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GOCMD = $(GOROOT)/bin/go
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endif
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bin:
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$(GOCMD) build -tags netgo
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clean:
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rm -f telme10
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.PHONY: bin clean
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29
main.go
29
main.go
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@ -31,9 +31,11 @@ package main
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import (
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import (
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"fmt"
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"fmt"
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"github.com/spreadspace/telgo"
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"os"
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"os"
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"time"
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"time"
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"github.com/coreos/go-systemd/activation"
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"github.com/spreadspace/telgo"
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)
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)
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func greet(c *telgo.Client, args []string) bool {
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func greet(c *telgo.Client, args []string) bool {
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@ -84,10 +86,29 @@ func greet(c *telgo.Client, args []string) bool {
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func main() {
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func main() {
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cmdlist := make(telgo.CmdList)
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cmdlist := make(telgo.CmdList)
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s, err := telgo.NewServer(":7023", "", cmdlist, nil)
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listeners, err := activation.Listeners(true)
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if err != nil {
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if err != nil {
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fmt.Println("failed to initialize the server:", err)
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}
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os.Exit(1)
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fmt.Printf("got %d sockets from systemd\n", len(listeners))
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var s *telgo.Server
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if len(listeners) == 0 {
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if len(os.Args) < 2 {
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fmt.Println("please specify a address to listen on")
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os.Exit(2)
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}
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if s, err = telgo.NewServer(os.Args[1], "", cmdlist, nil); err != nil {
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fmt.Println("failed to initialize the server:", err)
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os.Exit(1)
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}
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} else {
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if len(listeners) > 1 {
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fmt.Println("warning got more than one socket from systemd, only using the first", err)
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}
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if s, err = telgo.NewServerFromListener(listeners[0], "", cmdlist, nil); err != nil {
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fmt.Println("failed to initialize the server:", err)
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os.Exit(1)
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}
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}
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}
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if err = s.RunWithGreeter(greet); err != nil {
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if err = s.RunWithGreeter(greet); err != nil {
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fmt.Println("telnet server returned:", err)
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fmt.Println("telnet server returned:", err)
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@ -0,0 +1,16 @@
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[Unit]
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Description=realraum birthday telnet server
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After=local-fs.target
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[Service]
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User=telme10
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Group=telme10
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Type=simple
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ExecStart=/usr/local/bin/telme10
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PrivateTmp=yes
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PrivateDevices=yes
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ProtectSystem=full
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ProtectHome=yes
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[Install]
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WantedBy=multi-user.target
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@ -0,0 +1,8 @@
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[Unit]
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Description=realraum birthday telnet server socket
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[Socket]
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ListenStream=23
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[Install]
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WantedBy=sockets.target
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