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don't allow a useless handshake with yourself (#402) 

* don't allow a useless handshake with yourself

* remove helper
This commit is contained in:
Ryan Huber 2021-03-15 12:58:23 -07:00 committed by GitHub
parent 5506da3de9
commit 3aaaea6309
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 8 additions and 0 deletions
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8
handshake_ix.go
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@ -107,6 +107,14 @@ func ixHandshakeStage1(f *Interface, addr *udpAddr, packet []byte, h *Header) {
certName := remoteCert.Details.Name
fingerprint, _ := remoteCert.Sha256Sum()
if vpnIP == ip2int(f.certState.certificate.Details.Ips[0].IP) {
l.WithField("vpnIp", IntIp(vpnIP)).WithField("udpAddr", addr).
WithField("certName", certName).
WithField("fingerprint", fingerprint).
WithField("handshake", m{"stage": 1, "style": "ix_psk0"}).Error("Refusing to handshake with myself")
return
}
myIndex, err := generateIndex()
if err != nil {
l.WithError(err).WithField("vpnIp", IntIp(vpnIP)).WithField("udpAddr", addr).