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ensure messageCounter is set before handshake is complete (#1154) 

Ensure we set messageCounter to 2 before the handshake is marked as
complete.
This commit is contained in:
Wade Simmons 2024-06-03 15:40:51 -04:00 committed by GitHub
parent a92056a7db
commit d9cae9e062
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GPG Key ID: B5690EEEBB952194
1 changed files with 11 additions and 3 deletions
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14
handshake_ix.go
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@ -1,6 +1,7 @@
package nebula
import (
"fmt"
"time"
"github.com/flynn/noise"
@ -321,7 +322,11 @@ func ixHandshakeStage1(f *Interface, addr *udp.Addr, via *ViaSender, packet []by
}
f.connectionManager.AddTrafficWatch(hostinfo.localIndexId)
hostinfo.ConnectionState.messageCounter.Store(2)
prev := hostinfo.ConnectionState.messageCounter.Swap(2)
if prev > 2 {
panic(fmt.Errorf("invalid state: messageCounter > 2 before handshake complete: %v", prev))
}
hostinfo.remotes.ResetBlockedRemotes()
return
@ -463,12 +468,15 @@ func ixHandshakeStage2(f *Interface, addr *udp.Addr, via *ViaSender, hh *Handsha
// Build up the radix for the firewall if we have subnets in the cert
hostinfo.CreateRemoteCIDR(remoteCert)
prev := hostinfo.ConnectionState.messageCounter.Swap(2)
if prev > 2 {
panic(fmt.Errorf("invalid state: messageCounter > 2 before handshake complete: %v", prev))
}
// Complete our handshake and update metrics, this will replace any existing tunnels for this vpnIp
f.handshakeManager.Complete(hostinfo, f)
f.connectionManager.AddTrafficWatch(hostinfo.localIndexId)
hostinfo.ConnectionState.messageCounter.Store(2)
if f.l.Level >= logrus.DebugLevel {
hostinfo.logger(f.l).Debugf("Sending %d stored packets", len(hh.packetStore))
}