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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 peerstore
import (
"fmt"
"strings"
"github.com/libp2p/go-libp2p/core/peer"
"github.com/multiformats/go-multiaddr"
)
// PeerInfoFromAddrs extracts the AddrInfo from a multiaddr string slice.
func PeerInfoFromAddrs(addrs []string) ([]*peer.AddrInfo, map[string]string) {
var addrInfo []*peer.AddrInfo
malformedAddrs := make(map[string]string)
for _, addr := range addrs {
info, err := PeerInfoFromAddr(addr)
// track malformed addresses
if err != nil {
malformedAddrs[addr] = err.Error()
continue
}
addrInfo = append(addrInfo, info)
}
return addrInfo, malformedAddrs
}
// PeerInfoFromAddr extracts the AddrInfo from a multiaddr string.
func PeerInfoFromAddr(addr string) (*peer.AddrInfo, error) {
maddr, err := multiaddr.NewMultiaddr(addr)
if err != nil {
return nil, err
}
info, err := peer.AddrInfoFromP2pAddr(maddr)
if err != nil {
return nil, err
}
return info, nil
}
// PeerInfoFromDomainPort converts a string of the form domain:port to AddrInfo
func PeerInfoFromDomainPort(domainPort string) (*peer.AddrInfo, error) {
parts := strings.Split(domainPort, ":")
if len(parts) != 2 || parts[0] == "" || parts[1] == "" {
return nil, fmt.Errorf("invalid domain port string %s, found %d colon-separated parts", domainPort, len(parts))
}
maddr, err := multiaddr.NewMultiaddr(fmt.Sprintf("/dns4/%s/tcp/%s", parts[0], parts[1]))
if err != nil {
return nil, err
}
// These will never have peer IDs
transport, _ := peer.SplitAddr(maddr)
return &peer.AddrInfo{ID: peer.ID(domainPort), Addrs: []multiaddr.Multiaddr{transport}}, nil
}
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