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// Command r2-a2s-probe probes a Titanfall 2 server.
package main
import (
"fmt"
"net/netip"
"os"
"sync"
"time"
"github.com/pg9182/atlas/pkg/a2s"
"github.com/spf13/pflag"
)
var opt struct {
Connections int
Timeout time.Duration
Silent bool
Help bool
}
func init() {
pflag.DurationVarP(&opt.Timeout, "timeout", "t", time.Second*3, "Amount of time to wait for a response")
pflag.IntVarP(&opt.Connections, "connections", "c", 1, "Number of concurrent connections")
pflag.BoolVarP(&opt.Silent, "silent", "s", false, "Don't show the result")
pflag.BoolVarP(&opt.Help, "help", "h", false, "Show this help text")
}
func main() {
pflag.Parse()
if pflag.NArg() < 1 || opt.Help {
fmt.Printf("usage: %s [options] ip:port...\n\noptions:\n%s", os.Args[0], pflag.CommandLine.FlagUsages())
if opt.Help {
os.Exit(2)
}
os.Exit(0)
}
if opt.Connections < 1 {
fmt.Fprintf(os.Stderr, "fatal: --connections must be at least 1\n")
os.Exit(2)
}
addr, err := parseAddrPorts(pflag.Args())
if err != nil {
fmt.Fprintf(os.Stderr, "fatal: invalid server address: %v\n", err)
os.Exit(2)
}
queue := make(chan int)
go func() {
defer close(queue)
for i := range addr {
queue <- i
}
}()
type Result struct {
Idx int
Err error
}
res := make(chan Result)
var wg sync.WaitGroup
for n := 0; n < opt.Connections; n++ {
wg.Add(1)
go func() {
defer wg.Done()
for i := range queue {
res <- Result{i, a2s.Probe(addr[i], opt.Timeout)}
}
}()
}
go func() {
wg.Wait()
close(res)
}()
var fail bool
for r := range res {
if !opt.Silent {
if r.Err != nil {
fmt.Fprintf(os.Stderr, "%s: error: %v\n", addr[r.Idx], r.Err)
} else {
fmt.Fprintf(os.Stderr, "%s: ok\n", addr[r.Idx])
}
}
if r.Err != nil {
fail = true
}
}
if fail {
os.Exit(1)
}
}
func parseAddrPorts(a []string) ([]netip.AddrPort, error) {
r := make([]netip.AddrPort, len(a))
for i, x := range a {
if v, err := netip.ParseAddrPort(x); err == nil {
r[i] = v
} else {
return nil, err
}
}
return r, nil
}
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