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// Copyright (C) 2019-2024 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package main
import (
"context"
"fmt"
"os"
"strings"
"github.com/algorand/go-algorand/logging"
"github.com/algorand/go-algorand/tools/network/dnssec"
)
func main() {
if len(os.Args) < 4 {
fmt.Printf(`Usage: %s <service> <proto> <name>
Where\n
<service> is a SRV service, for example 'algobootstrap',
<proto> is SRV protocol ('tcp', 'udp'),
<name> is SRV name like 'mainnet.algorand.network
`, os.Args[0])
os.Exit(1)
}
srvService := os.Args[1]
srvProto := os.Args[2]
srvName := os.Args[3]
success := make(map[string]bool)
errors := make(map[string]string)
nonSigned := make(map[string]string)
r := dnssec.MakeDefaultDnssecResolver("", logging.Base())
_, entries, err := r.LookupSRV(context.Background(), srvService, srvProto, srvName)
if err != nil {
fmt.Printf("%v\n", err)
return
}
for _, entry := range entries {
_, err := r.LookupIPAddr(context.Background(), entry.Target)
if err == nil {
success[entry.Target] = true
} else {
if strings.HasPrefix(err.Error(), "no signature in DNS response for") {
nonSigned[entry.Target] = err.Error()[len("no signature in DNS response for"):]
} else {
errors[entry.Target] = err.Error()
}
}
}
fmt.Printf("Signed responses:\n")
for k := range success {
fmt.Printf("%s\n", k)
}
fmt.Printf("\nNon signed entires\n")
for k, v := range nonSigned {
fmt.Printf("%s -> %s\n", k, v)
}
fmt.Printf("\nErrors\n")
for k, v := range errors {
fmt.Printf("%s: %s\n", k, v)
}
}
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