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exit node dst wip

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This commit is contained in:
Claire Wang
2024-03-27 15:45:02 -04:00
parent 92d3f64e95
commit 78c36f53fe
8 changed files with 94 additions and 63 deletions
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8
wgengine/netlog/logger.go
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@@ -92,7 +92,7 @@ var testClient *http.Client
// The IP protocol and source port are always zero.
// The sock is used to populated the PhysicalTraffic field in Message.
// The netMon parameter is optional; if non-nil it's used to do faster interface lookups.
func (nl *Logger) Startup(nodeID tailcfg.StableNodeID, nodeLogID, domainLogID logid.PrivateID, tun, sock Device, netMon *netmon.Monitor) error {
func (nl *Logger) Startup(nodeID tailcfg.StableNodeID, nodeLogID, domainLogID logid.PrivateID, tun, sock Device, netMon *netmon.Monitor, enableExitDstFlowLogs bool) error {
nl.mu.Lock()
defer nl.mu.Unlock()
if nl.logger != nil {
@@ -130,7 +130,7 @@ func (nl *Logger) Startup(nodeID tailcfg.StableNodeID, nodeLogID, domainLogID lo
addrs := nl.addrs
prefixes := nl.prefixes
nl.mu.Unlock()
recordStatistics(nl.logger, nodeID, start, end, virtual, physical, addrs, prefixes)
recordStatistics(nl.logger, nodeID, start, end, virtual, physical, addrs, prefixes, enableExitDstFlowLogs)
})
// Register the connection tracker into the TUN device.
@@ -150,7 +150,7 @@ func (nl *Logger) Startup(nodeID tailcfg.StableNodeID, nodeLogID, domainLogID lo
return nil
}
func recordStatistics(logger *logtail.Logger, nodeID tailcfg.StableNodeID, start, end time.Time, connstats, sockStats map[netlogtype.Connection]netlogtype.Counts, addrs map[netip.Addr]bool, prefixes map[netip.Prefix]bool) {
func recordStatistics(logger *logtail.Logger, nodeID tailcfg.StableNodeID, start, end time.Time, connstats, sockStats map[netlogtype.Connection]netlogtype.Counts, addrs map[netip.Addr]bool, prefixes map[netip.Prefix]bool, enableExitDstFlowLogs bool) {
m := netlogtype.Message{NodeID: nodeID, Start: start.UTC(), End: end.UTC()}
classifyAddr := func(a netip.Addr) (isTailscale, withinRoute bool) {
@@ -179,7 +179,7 @@ func recordStatistics(logger *logtail.Logger, nodeID tailcfg.StableNodeID, start
m.SubnetTraffic = append(m.SubnetTraffic, netlogtype.ConnectionCounts{Connection: conn, Counts: cnts})
default:
const anonymize = true
if anonymize {
if anonymize && !enableExitDstFlowLogs {
// Only preserve the address if it is a Tailscale IP address.
srcOrig, dstOrig := conn.Src, conn.Dst
conn = netlogtype.Connection{} // scrub everything by default