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method_eap: tolerate empty request packets

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TLS methods call process_request_packet(NULL, 0) to check on the inner
method for the payload to piggyback on the final handshake response.

Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman 2020-01-29 10:19:12 +01:00
parent 2282a2c45f
commit 7caa4b12a6
1 changed files with 2 additions and 0 deletions
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lib/EAPBase/src/Method.cpp
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@ -234,6 +234,8 @@ EapPeerMethodResponseAction eap::method_eap::process_request_packet(
_In_bytecount_(dwReceivedPacketSize) const void *pReceivedPacket, _In_bytecount_(dwReceivedPacketSize) const void *pReceivedPacket,
_In_ DWORD dwReceivedPacketSize) _In_ DWORD dwReceivedPacketSize)
{ {
if (dwReceivedPacketSize == 0)
return EapPeerMethodResponseActionNone;
if (dwReceivedPacketSize < offsetof(EapPacket, Data)) if (dwReceivedPacketSize < offsetof(EapPacket, Data))
throw win_runtime_error(EAP_E_EAPHOST_METHOD_INVALID_PACKET, __FUNCTION__ " Incomplete EAP packet header."); throw win_runtime_error(EAP_E_EAPHOST_METHOD_INVALID_PACKET, __FUNCTION__ " Incomplete EAP packet header.");