Max/basil00_WinDivert
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Do not thread the impostor flag.

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Only packets directly injected by other drivers
are considered impostor.  This is still sufficient
to prevent infinite loops.
This commit is contained in:
basil00
2018-01-13 16:27:20 +08:00
parent e2106ea2c6
commit bef2240d9e
1 changed files with 0 additions and 15 deletions
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sys/windivert.c
-15
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@@ -195,7 +195,6 @@ WDF_DECLARE_CONTEXT_TYPE_WITH_NAME(req_context_s, windivert_req_context_get);
/*
* WinDivert packet structure.
*/
#define WINDIVERT_FLAG_IMPOSTOR 0x80000000
#define WINDIVERT_WORK_QUEUE_LEN_MAX 2048
struct packet_s
{
@@ -1693,11 +1692,6 @@ windivert_write_bad_packet:
}
}
if (addr->Impostor)
{
priority |= WINDIVERT_FLAG_IMPOSTOR;
}
handle = (is_ipv4? inject_handle: injectv6_handle);
compl_handle = ((flags & WINDIVERT_FLAG_DEBUG) != 0? (HANDLE)request: NULL);
if (layer == WINDIVERT_LAYER_NETWORK_FORWARD)
@@ -2382,11 +2376,6 @@ static void windivert_classify_callout(context_t context, IN UINT8 direction,
packet_state == FWPS_PACKET_PREVIOUSLY_INJECTED_BY_SELF)
{
packet_priority = (UINT32)packet_context;
if ((packet_priority & WINDIVERT_FLAG_IMPOSTOR) != 0)
{
impostor = TRUE;
packet_priority &= ~WINDIVERT_FLAG_IMPOSTOR;
}
if (packet_priority >= priority)
{
WdfObjectDereference(object);
@@ -2747,10 +2736,6 @@ static void windivert_reinject_packet(packet_t packet)
return;
}
priority = packet->priority;
if (packet->impostor)
{
priority |= WINDIVERT_FLAG_IMPOSTOR;
}
NET_BUFFER_LIST_INFO(buffers, TcpIpChecksumNetBufferListInfo) =
packet->checksums.Value;
handle = (packet->is_ipv4? inject_handle: injectv6_handle);