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