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Check AllowedEncryptionPublicKeys

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This commit is contained in:
Neil Alexander 2019-01-31 23:29:18 +00:00
parent e36f88c75f
commit 432f93de89
No known key found for this signature in database
GPG Key ID: A02A2019A2BB0944
1 changed files with 13 additions and 0 deletions
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13
src/yggdrasil/link.go
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@ -1,6 +1,7 @@
package yggdrasil
import (
"encoding/hex"
"errors"
"fmt"
"net"
@ -104,6 +105,18 @@ func (intf *linkInterface) handler() error {
intf.link.core.log.Errorln("Failed to connect to node: " + intf.name + " version: " + fmt.Sprintf("%d.%d", meta.ver, meta.minorVer))
return errors.New("failed to connect: wrong version")
}
// Check if we're authorized to connect to this key / IP
if !intf.link.core.peers.isAllowedEncryptionPublicKey(&meta.box) {
// Allow unauthorized peers if they're link-local
raddrStr, _, _ := net.SplitHostPort(intf.info.remote)
raddr := net.ParseIP(raddrStr)
if !raddr.IsLinkLocalUnicast() {
intf.link.core.log.Debugf("%s connection to %s forbidden: AllowedEncryptionPublicKey does not contain key %s",
strings.ToUpper(intf.info.linkType), intf.info.remote, hex.EncodeToString(meta.box[:]))
intf.msgIO.close()
return nil
}
}
// Check if we already have a link to this node
intf.info.box = meta.box
intf.info.sig = meta.sig