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main.go
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main.go
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package main
import (
"context"
"flag"
"fmt"
"net"
"os"
"strconv"
"time"
"github.com/holgermetschulat/radius"
"github.com/holgermetschulat/radius/rfc2865"
)
const usage = `
Sends an Access-Request RADIUS packet to a server and prints the result.
`
func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "usage: %s [flags] <user> <password> <radius-server>[:port] <nas-port-number> <secret>\n", os.Args[0])
flag.PrintDefaults()
fmt.Fprint(os.Stderr, usage)
}
timeout := flag.Duration("timeout", time.Second*10, "timeout for the request to finish")
flag.Parse()
if flag.NArg() != 5 {
flag.Usage()
os.Exit(1)
}
host, port, err := net.SplitHostPort(flag.Arg(2))
if err != nil {
host = flag.Arg(2)
port = "1812"
}
hostport := net.JoinHostPort(host, port)
packet := radius.New(radius.CodeAccessRequest, []byte(flag.Arg(4)))
rfc2865.UserName_SetString(packet, flag.Arg(0))
rfc2865.UserPassword_SetString(packet, flag.Arg(1))
nasPort, _ := strconv.Atoi(flag.Arg(3))
rfc2865.NASPort_Set(packet, rfc2865.NASPort(nasPort))
ctx, cancel := context.WithTimeout(context.Background(), *timeout)
defer cancel()
received, err := radius.Exchange(ctx, packet, hostport)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
status := received.Code.String()
if msg, err := rfc2865.ReplyMessage_LookupString(received); err == nil {
status += " (" + msg + ")"
}
fmt.Println(status)
if received.Code != radius.CodeAccessAccept {
os.Exit(2)
}
}