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Remove check for self-communication (allowed by default)

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Daniel 2023-08-18 14:32:15 +02:00
parent 8ea062b2bd
commit fab3208929
1 changed files with 0 additions and 41 deletions
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41
firewall/master.go
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@ -19,8 +19,6 @@ import (
"github.com/safing/portmaster/network"
"github.com/safing/portmaster/network/netutils"
"github.com/safing/portmaster/network/packet"
"github.com/safing/portmaster/network/state"
"github.com/safing/portmaster/process"
"github.com/safing/portmaster/profile"
"github.com/safing/portmaster/profile/endpoints"
)
@ -31,9 +29,6 @@ type deciderFn func(context.Context, *network.Connection, *profile.LayeredProfil
var defaultDeciders = []deciderFn{
checkPortmasterConnection,
// TODO: This is currently very slow.
// Find a way to improve performance using the eBPF data.
// checkSelfCommunication,
checkIfBroadcastReply,
checkConnectionType,
checkConnectionScope,
@ -164,42 +159,6 @@ func checkPortmasterConnection(ctx context.Context, conn *network.Connection, _
return true
}
// checkSelfCommunication checks if the process is communicating with itself.
func checkSelfCommunication(ctx context.Context, conn *network.Connection, _ *profile.LayeredProfile, pkt packet.Packet) bool {
// check if process is communicating with itself
if pkt != nil {
// TODO: evaluate the case where different IPs in the 127/8 net are used.
pktInfo := pkt.Info()
if conn.Process().Pid >= 0 && pktInfo.Src.Equal(pktInfo.Dst) {
// get PID
otherPid, _, err := state.Lookup(&packet.Info{
Inbound: !pktInfo.Inbound, // we want to know the process on the other end
Version: pktInfo.Version,
Protocol: pktInfo.Protocol,
Src: pktInfo.Src,
SrcPort: pktInfo.SrcPort,
Dst: pktInfo.Dst,
DstPort: pktInfo.DstPort,
}, true)
if err != nil {
log.Tracer(ctx).Debugf("filter: failed to find local peer process PID: %s", err)
} else {
// get primary process
otherProcess, err := process.GetOrFindProcess(ctx, otherPid)
if err != nil {
log.Tracer(ctx).Debugf("filter: failed to find load local peer process with PID %d: %s", otherPid, err)
} else if otherProcess.Path == conn.Process().Path {
conn.Accept("process internal connection", noReasonOptionKey)
conn.Internal = true
return true
}
}
}
}
return false
}
func checkIfBroadcastReply(ctx context.Context, conn *network.Connection, _ *profile.LayeredProfile, _ packet.Packet) bool {
// Only check inbound connections.
if !conn.Inbound {