From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Daniel Micay Date: Wed, 31 Jul 2024 02:44:05 -0400 Subject: [PATCH] relax VPN DNS leak prevention for incompatible apps This avoids attempting to fix the leaks for VPN apps causing leaks through not configuring DNS. This can be reliably fixed from the VPN app's side. --- server/NetworkController.cpp | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/server/NetworkController.cpp b/server/NetworkController.cpp index 13921e92..4c424dc0 100644 --- a/server/NetworkController.cpp +++ b/server/NetworkController.cpp @@ -189,7 +189,7 @@ int NetworkController::setDefaultNetwork(unsigned netId) { uint32_t NetworkController::getNetworkForDnsLocked(unsigned* netId, uid_t uid) const { Fwmark fwmark; - fwmark.protectedFromVpn = canProtectLocked(uid); + fwmark.protectedFromVpn = true; fwmark.permission = getPermissionForUserLocked(uid); // Common case: there is no VPN that applies to the user, and the query did not specify a netId. @@ -201,6 +201,7 @@ uint32_t NetworkController::getNetworkForDnsLocked(unsigned* netId, uid_t uid) c *netId = mDefaultNetId; fwmark.netId = *netId; fwmark.explicitlySelected = true; + fwmark.protectedFromVpn = canProtectLocked(uid); return fwmark.intValue; } @@ -217,6 +218,8 @@ uint32_t NetworkController::getNetworkForDnsLocked(unsigned* netId, uid_t uid) c if (network && network->getType() == Network::VIRTUAL && !RESOLV_STUB.resolv_has_nameservers(*netId)) { *netId = mDefaultNetId; + } else { + fwmark.protectedFromVpn = canProtectLocked(uid); } } else { // If the user is subject to a VPN and the VPN provides DNS servers, use those servers