cwinfo/yggdrasil-go
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Fix AllowedPublicKeys

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This commit is contained in:
Neil Alexander 2021-05-10 22:39:12 +01:00
parent c20b66f3b6
commit 05caf36f4e
3 changed files with 36 additions and 30 deletions
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4
cmd/yggdrasil/main.go
View File

@ -369,7 +369,7 @@ func (n *node) sessionFirewall(pubkey *crypto.BoxPubKey, initiator bool) bool {
// Prepare for checking whitelist/blacklist
var box crypto.BoxPubKey
// Reject blacklisted nodes
for _, b := range n.state.Current.SessionFirewall.BlacklistEncryptionPublicKeys {
for _, b := range n.state.Current.SessionFirewall.BlacklistPublicKeys {
key, err := hex.DecodeString(b)
if err == nil {
copy(box[:crypto.BoxPubKeyLen], key)
@ -380,7 +380,7 @@ func (n *node) sessionFirewall(pubkey *crypto.BoxPubKey, initiator bool) bool {
}
// Allow whitelisted nodes
for _, b := range n.state.Current.SessionFirewall.WhitelistEncryptionPublicKeys {
for _, b := range n.state.Current.SessionFirewall.WhitelistPublicKeys {
key, err := hex.DecodeString(b)
if err == nil {
copy(box[:crypto.BoxPubKeyLen], key)

8
src/config/config.go
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@ -67,7 +67,7 @@ type NodeConfig struct {
Listen []string `comment:"Listen addresses for incoming connections. You will need to add\nlisteners in order to accept incoming peerings from non-local nodes.\nMulticast peer discovery will work regardless of any listeners set\nhere. Each listener should be specified in URI format as above, e.g.\ntcp://0.0.0.0:0 or tcp://[::]:0 to listen on all interfaces."`
AdminListen string `comment:"Listen address for admin connections. Default is to listen for local\nconnections either on TCP/9001 or a UNIX socket depending on your\nplatform. Use this value for yggdrasilctl -endpoint=X. To disable\nthe admin socket, use the value \"none\" instead."`
MulticastInterfaces []string `comment:"Regular expressions for which interfaces multicast peer discovery\nshould be enabled on. If none specified, multicast peer discovery is\ndisabled. The default value is .* which uses all interfaces."`
AllowedEncryptionPublicKeys []string `comment:"List of peer encryption public keys to allow incoming TCP peering\nconnections from. If left empty/undefined then all connections will\nbe allowed by default. This does not affect outgoing peerings, nor\ndoes it affect link-local peers discovered via multicast."`
AllowedPublicKeys []string `comment:"List of peer encryption public keys to allow incoming TCP peering\nconnections from. If left empty/undefined then all connections will\nbe allowed by default. This does not affect outgoing peerings, nor\ndoes it affect link-local peers discovered via multicast."`
SigningPublicKey string `comment:"Your public signing key. You should not ordinarily need to share\nthis with anyone."`
SigningPrivateKey string `comment:"Your private signing key. DO NOT share this with anyone!"`
LinkLocalTCPPort uint16 `comment:"The port number to be used for the link-local TCP listeners for the\nconfigured MulticastInterfaces. This option does not affect listeners\nspecified in the Listen option. Unless you plan to firewall link-local\ntraffic, it is best to leave this as the default value of 0. This\noption cannot currently be changed by reloading config during runtime."`
@ -86,8 +86,8 @@ type SessionFirewall struct {
AllowFromDirect bool `comment:"Allow network traffic from directly connected peers."`
AllowFromRemote bool `comment:"Allow network traffic from remote nodes on the network that you are\nnot directly peered with."`
AlwaysAllowOutbound bool `comment:"Allow outbound network traffic regardless of AllowFromDirect or\nAllowFromRemote. This does allow a remote node to send unsolicited\ntraffic back to you for the length of the session."`
WhitelistEncryptionPublicKeys []string `comment:"List of public keys from which network traffic is always accepted,\nregardless of AllowFromDirect or AllowFromRemote."`
BlacklistEncryptionPublicKeys []string `comment:"List of public keys from which network traffic is always rejected,\nregardless of the whitelist, AllowFromDirect or AllowFromRemote."`
WhitelistPublicKeys []string `comment:"List of public keys from which network traffic is always accepted,\nregardless of AllowFromDirect or AllowFromRemote."`
BlacklistPublicKeys []string `comment:"List of public keys from which network traffic is always rejected,\nregardless of the whitelist, AllowFromDirect or AllowFromRemote."`
}
// TunnelRouting contains the crypto-key routing tables for tunneling regular
@ -120,7 +120,7 @@ func GenerateConfig() *NodeConfig {
cfg.SigningPrivateKey = hex.EncodeToString(spriv[:])
cfg.Peers = []string{}
cfg.InterfacePeers = map[string][]string{}
cfg.AllowedEncryptionPublicKeys = []string{}
cfg.AllowedPublicKeys = []string{}
cfg.MulticastInterfaces = defaults.GetDefaults().DefaultMulticastInterfaces
cfg.IfName = defaults.GetDefaults().DefaultIfName
cfg.IfMTU = defaults.GetDefaults().DefaultIfMTU

16
src/yggdrasil/link.go
View File

@ -208,14 +208,20 @@ func (intf *link) handler() (chan struct{}, error) {
}
}
// Check if we're authorized to connect to this key / IP
/* TODO check allowed public keys
if intf.incoming && !intf.force && !intf.links.core.peers.isAllowedEncryptionPublicKey(&meta.box) {
allowed := intf.links.core.config.GetCurrent().AllowedPublicKeys
isallowed := len(allowed) == 0
for _, k := range allowed {
if k == hex.EncodeToString(meta.key) { // TODO: this is yuck
isallowed = true
break
}
}
if intf.incoming && !intf.force && !isallowed {
intf.links.core.log.Warnf("%s connection from %s forbidden: AllowedEncryptionPublicKeys does not contain key %s",
strings.ToUpper(intf.info.linkType), intf.info.remote, hex.EncodeToString(meta.box[:]))
intf.msgIO.close()
strings.ToUpper(intf.info.linkType), intf.info.remote, hex.EncodeToString(meta.key))
intf.close()
return nil, nil
}
*/
// Check if we already have a link to this node
copy(intf.info.key[:], meta.key)
intf.links.mutex.Lock()