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89 lines
1.4 KiB
89 lines
1.4 KiB
package main
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import (
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"fmt"
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"net"
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"log"
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"sync"
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"syscall"
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"flag"
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)
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type Options struct {
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ConfigPath string
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Jail bool
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}
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func ParseOptions() Options {
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var opts Options
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flag.StringVar(&opts.ConfigPath, "config", "dentata.json", "config.json to load")
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flag.BoolVar(&opts.Jail, "jail", false, "drop to low priv jail")
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flag.Parse()
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return opts
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}
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func handleConnection(conn net.Conn) {
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defer conn.Close()
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addr := conn.RemoteAddr()
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fmt.Println("Connect from", addr.Network(), addr.String())
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// send explosion notice to dentata
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report, err := net.Dial("tcp","127.0.0.1:9001")
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if err != nil { panic(err) }
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defer report.Close()
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report.Write([]byte(addr.String()))
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}
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func listener(addr string) {
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server, err := net.Listen("tcp", addr)
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if err != nil { panic(err) }
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for {
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conn, err := server.Accept()
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if err != nil {
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log.Println("ACCEPT ERROR", err)
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} else {
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go handleConnection(conn)
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}
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}
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}
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func ChrootJailLOL() {
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err := syscall.Chdir("tmp")
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if err != nil { panic(err) }
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err = syscall.Chroot(".")
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if err != nil { panic(err) }
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err = syscall.Setuid(1000)
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if err != nil { panic(err) }
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syscall.Setgid(1000)
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if err != nil { panic(err) }
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}
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func main() {
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opts := ParseOptions()
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var wg sync.WaitGroup
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for i := 0; i < 10; i++ {
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wg.Go(func () {
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listener(fmt.Sprintf("0.0.0.0:%d", 8000 + i))
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})
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}
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if opts.Jail {
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ChrootJailLOL()
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}
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wg.Wait()
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}
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