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ACKing an empty LCP options list

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This commit is contained in:
Evengard 2020-04-25 05:01:09 +03:00
parent 9073452b09
commit b9109211d3
2 changed files with 13 additions and 1 deletions
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13
src/Cedar/Proto_PPP.c
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@ -1088,9 +1088,14 @@ bool PPPProcessLCPRequestPacket(PPP_SESSION *p, PPP_PACKET *pp)
USHORT NegotiatedMRU = PPP_UNSPECIFIED; USHORT NegotiatedMRU = PPP_UNSPECIFIED;
// MSCHAPv2 code // MSCHAPv2 code
UCHAR ms_chap_v2_code[3]; UCHAR ms_chap_v2_code[3];
UINT currentMagic = 0;
WRITE_USHORT(ms_chap_v2_code, PPP_LCP_AUTH_CHAP); WRITE_USHORT(ms_chap_v2_code, PPP_LCP_AUTH_CHAP);
ms_chap_v2_code[2] = PPP_CHAP_ALG_MS_CHAP_V2; ms_chap_v2_code[2] = PPP_CHAP_ALG_MS_CHAP_V2;
Debug("Got LCP packet request ID=%i OptionsListSize=%i\n", pp->Lcp->Id, LIST_NUM(pp->Lcp->OptionList));
for (i = 0; i < LIST_NUM(pp->Lcp->OptionList); i++) for (i = 0; i < LIST_NUM(pp->Lcp->OptionList); i++)
{ {
PPP_OPTION *t = LIST_DATA(pp->Lcp->OptionList, i); PPP_OPTION *t = LIST_DATA(pp->Lcp->OptionList, i);
@ -1792,6 +1797,12 @@ bool PPPAckLCPOptionsEx(PPP_SESSION *p, PPP_PACKET* pp, bool simulate)
UINT i = 0; UINT i = 0;
PPP_PACKET* ret; PPP_PACKET* ret;
bool toBeACKed = false; bool toBeACKed = false;
if (LIST_NUM(pp->Lcp->OptionList) == 0)
{
// We acknoweldge an empty option list
toBeACKed = true;
Debug("ACKing empty LCP options list, id=%i\n", pp->Lcp->Id);
}
for (i = 0; i < LIST_NUM(pp->Lcp->OptionList); i++) for (i = 0; i < LIST_NUM(pp->Lcp->OptionList); i++)
{ {
PPP_OPTION *t = LIST_DATA(pp->Lcp->OptionList, i); PPP_OPTION *t = LIST_DATA(pp->Lcp->OptionList, i);
@ -1826,7 +1837,7 @@ bool PPPAckLCPOptionsEx(PPP_SESSION *p, PPP_PACKET* pp, bool simulate)
} }
} }
if (LIST_NUM(ret->Lcp->OptionList) == 0 || simulate) if (simulate)
{ {
FreePPPPacket(ret); FreePPPPacket(ret);
return false; return false;

1
src/Cedar/Proto_PPP.h
View File

@ -82,6 +82,7 @@
// LCP Option Type // LCP Option Type
#define PPP_LCP_OPTION_MRU 1 #define PPP_LCP_OPTION_MRU 1
#define PPP_LCP_OPTION_AUTH 3 #define PPP_LCP_OPTION_AUTH 3
#define PPP_LCP_OPTION_MAGIC 5
// IPCP option type // IPCP option type
#define PPP_IPCP_OPTION_IP 3 #define PPP_IPCP_OPTION_IP 3