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vmmnet.c
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// vmmnet.c : implementation of functionality related to the Windows networking.
//
// (c) Ulf Frisk, 2019-2021
// Author: Ulf Frisk, [email protected]
//
#include <ws2tcpip.h>
#include "vmmnet.h"
#include "pe.h"
#include "pdb.h"
#include "util.h"
#define AF_INET6 23 // Ws2tcpip.h
typedef struct _RTL_DYNAMIC_HASH_TABLE {
DWORD Flags; // +000
DWORD Shift; // +004
DWORD TableSize; // +008
DWORD Pivot; // +00c
DWORD DivisorMask; // +010
DWORD NumEntries; // +014
DWORD NonEmptyBuckets; // +018
DWORD NumEnumerators; // +01c
QWORD Directory; // +020
} RTL_DYNAMIC_HASH_TABLE, *PRTL_DYNAMIC_HASH_TABLE;
// INTERNAL TYPEDEF's BELOW:
typedef struct tdVMMNET_OFFSET_TcpE {
BOOL _fValid;
BOOL _fProcessedTry;
WORD _Size;
WORD INET_AF;
WORD INET_AF_AF;
WORD INET_Addr;
WORD FLink;
WORD State;
WORD PortSrc;
WORD PortDst;
WORD EProcess;
WORD Time;
} VMMNET_OFFSET_TcpE, *PVMMNET_OFFSET_TcpE;
typedef struct tdVMMNET_OFFSET_TcpL_UdpA {
WORD _Size;
WORD INET_AF;
WORD INET_AF_AF;
WORD LocalAddr;
WORD LocalPort;
WORD FLink;
WORD EProcess;
WORD Time;
} VMMNET_OFFSET_TcpL_UdpA, *PVMMNET_OFFSET_TcpL_UdpA;
typedef struct tdVMMNET_CONTEXT {
QWORD vaModuleTcpip;
PDB_HANDLE hPDB;
DWORD cPartition;
QWORD vaPartitionTable;
VMMNET_OFFSET_TcpE oTcpE;
VMMNET_OFFSET_TcpL_UdpA oTcpL;
VMMNET_OFFSET_TcpL_UdpA oUdpA;
QWORD vaTcpPortPool;
QWORD vaUdpPortPool;
} VMMNET_CONTEXT, *PVMMNET_CONTEXT;
typedef struct tdVMMNET_ASYNC_CONTEXT {
PVMMNET_CONTEXT ctx;
POB_MAP pmNetEntries;
PVMM_PROCESS pSystemProcess;
} VMMNET_ASYNC_CONTEXT, *PVMMNET_ASYNC_CONTEXT;
#define VMMNET_PARTITIONTABLE_OFFSET20(pbPT, vaPT) (*(PQWORD)pbPT && !*(PQWORD)(pbPT + 0x30) && ((vaPT + 0x20) == *(PQWORD)(pbPT + 0x20)) && ((vaPT + 0x20) == *(PQWORD)(pbPT + 0x28)))
#define VMMNET_PARTITIONTABLE_OFFSET18(pbPT, vaPT) (*(PQWORD)pbPT && !*(PQWORD)(pbPT + 0x28) && ((vaPT + 0x18) == *(PQWORD)(pbPT + 0x18)) && ((vaPT + 0x18) == *(PQWORD)(pbPT + 0x20)))
#define VMMNET_PARTITIONTABLE_WIN10_1903(pbPT) (VMM_KADDR64_16(*(PQWORD)(pbPT + 0x00)) && VMM_KADDR64_16(*(PQWORD)(pbPT + 0x08)) && VMM_KADDR64_16(*(PQWORD)(pbPT + 0x10)) && (*(PQWORD)(pbPT + 0x08) - *(PQWORD)(pbPT + 0x00) < 0x200) && (*(PQWORD)(pbPT + 0x10) - *(PQWORD)(pbPT + 0x08) < 0x200))
// ----------------------------------------------------------------------------
// TCP ENDPOINT FUNCTIONALITY BELOW:
// ----------------------------------------------------------------------------
/*
* qsort compare function for sorting the TCP connection list
*/
int VmmNet_TcpE_CmpSort(PVMM_MAP_NETENTRY a, PVMM_MAP_NETENTRY b)
{
if((a->dwPoolTag != b->dwPoolTag) && (a->dwPoolTag == 'UdpA' || b->dwPoolTag == 'UdpA')) {
return (a->dwPoolTag == 'UdpA') ? 1 : -1;
}
if(a->dwPID != b->dwPID) {
return a->dwPID - b->dwPID;
}
if(memcmp(a->Src.pbAddr, b->Src.pbAddr, 16)) {
return memcmp(a->Src.pbAddr, b->Src.pbAddr, 16);
}
if(a->Src.port != b->Src.port) {
return a->Src.port - b->Src.port;
}
if(a->AF != b->AF) {
return a->AF - b->AF;
}
return memcmp(a->Dst.pbAddr, b->Dst.pbAddr, 16);
}
/*
* Fuzz offsets in TcpE if required. Upon a successful fuzz values will be stored
* in the ctxVmm global context.
* -- ctx
* -- pSystemProcess
* -- vaTcpE_UdpA - virtual address of a TCP ENDPOINT entry (TcpE).
*/
VOID VmmNet_TcpE_Fuzz(_In_ PVMMNET_CONTEXT ctx, _In_ PVMM_PROCESS pSystemProcess, _In_ QWORD vaTcpE)
{
BOOL f;
QWORD o, va;
DWORD dwPoolTagInNl;
BYTE pb[0x300];
PVMM_PROCESS pObProcess = NULL;
PVMMNET_OFFSET_TcpE po = &ctx->oTcpE;
if(po->_fValid || po->_fProcessedTry) { goto fail; }
po->_fProcessedTry = TRUE;
if(!VmmRead(pSystemProcess, vaTcpE, pb, 0x300)) { goto fail; }
// Search for EPROCESS value in TcpE struct
while((pObProcess = VmmProcessGetNext(pObProcess, VMM_FLAG_PROCESS_SHOW_TERMINATED))) {
for(o = 0x80; o < 0x300; o += 8) {
va = *(PQWORD)(pb + o);
if(!VMM_KADDR64_16(va)) { continue; }
if(va == pObProcess->win.EPROCESS.va) {
po->EProcess = (WORD)o;
// INET_AF offset:
f = VMM_KADDR64_16(*(PQWORD)(pb + 0x10)) &&
VmmRead(pSystemProcess, *(PQWORD)(pb + 0x10) - 0x0c, (PBYTE)&dwPoolTagInNl, 4) &&
(dwPoolTagInNl == 'lNnI');
po->INET_AF = f ? 0x10 : 0x18;
// INET_AF AF offset
po->INET_AF_AF = (ctxVmm->kernel.dwVersionBuild < 9200) ? 0x14 : 0x18; // VISTA-WIN7 or WIN8+
// check for state offset
po->State = (*(PDWORD)(pb + 0x6c) <= 13) ? 0x6c : 0x68;
// static or relative offsets
po->INET_Addr = po->INET_AF + 0x08;
po->FLink = 0x40;
po->PortSrc = po->State + 0x04;
po->PortDst = po->State + 0x06;
po->Time = po->EProcess + 0x10;
po->_Size = po->Time + 8;
po->_fValid = TRUE;
// print result
if(ctxMain->cfg.fVerboseExtra) {
vmmprintfvv_fn("0x%016llx:\n", vaTcpE);
vmmprintfvv(
" _Size %03X, InetAF %03X, InetAFAF %03X, InetAddr %03X, FLinkAll %03X\n",
po->_Size, po->INET_AF, po->INET_AF_AF, po->INET_Addr, po->FLink);
vmmprintfvv(
" State %03X, SrcPort %03X, DstPort %03X, EProcess %03X, Time %03X\n",
po->State, po->PortSrc, po->PortDst, po->EProcess, po->Time);
Util_PrintHexAscii(pb, 0x300, 0);
}
Ob_DECREF(pObProcess);
return;
}
}
}
fail:
Ob_DECREF(pObProcess);
}
/*
* Retrieve the virtual addresses of the TCP ENDPOINT structs in memory (TcpE).
* The virtual addresses will be put into the pObSet_TcpEndpoints set upon success.
* -- ctx
* -- pSystemProcess
* -- pObSet_TcpEndpoints
* -- return
*/
_Success_(return)
BOOL VmmNet_TcpE_GetAddressEPs(_In_ PVMMNET_CONTEXT ctx, _In_ PVMM_PROCESS pSystemProcess, _Inout_ POB_SET psvaOb_TcpEndpoints)
{
BOOL f, fResult = FALSE;
QWORD va, va2, va3;
DWORD i, o, oStartHT, oListPT = 0, cbRead, cbTcpHT;
BYTE pb[0x810] = { 0 };
PBYTE pbPartitionTable = NULL, pbTcHT = NULL;
POB_SET pObTcHT = NULL, pObHTab = NULL, pObTcpE = NULL;
PRTL_DYNAMIC_HASH_TABLE pTcpHT;
if(!(pObTcHT = ObSet_New())) { goto fail; }
if(!(pObHTab = ObSet_New())) { goto fail; }
if(!(pObTcpE = ObSet_New())) { goto fail; }
if(!(pbPartitionTable = LocalAlloc(LMEM_ZEROINIT, 0x4000))) { goto fail; }
// 1: enumerate possible TcHT by walking tcpip.sys!PartitionTable
VmmReadEx(pSystemProcess, ctx->vaPartitionTable, pbPartitionTable, 0x4000, NULL, 0);
oStartHT = (DWORD)(*(PQWORD)(pbPartitionTable + 0x10) - *(PQWORD)(pbPartitionTable + 0x00));
cbTcpHT = 0x10 + oStartHT + ctx->cPartition * sizeof(RTL_DYNAMIC_HASH_TABLE);
if(cbTcpHT > 0x10000) { goto fail; }
if(!(pbTcHT = LocalAlloc(LMEM_ZEROINIT, cbTcpHT))) { goto fail; }
oListPT = VMMNET_PARTITIONTABLE_OFFSET20(pbPartitionTable, ctx->vaPartitionTable) ? 0x20 : oListPT;
oListPT = VMMNET_PARTITIONTABLE_OFFSET18(pbPartitionTable, ctx->vaPartitionTable) ? 0x18 : oListPT;
if(oListPT) {
for(o = 0; o < 0x1000 - oListPT - 8; o += 8) {
f = *(PQWORD)(pbPartitionTable + o + 0x00) &&
(*(PQWORD)(pbPartitionTable + o + 0x10) - *(PQWORD)(pbPartitionTable + o + 0x00) == oStartHT) &&
((ctx->vaPartitionTable + o + oListPT) == *(PQWORD)(pbPartitionTable + o + oListPT)) &&
((ctx->vaPartitionTable + o + oListPT) == *(PQWORD)(pbPartitionTable + o + oListPT + 8));
if(!f) { continue; }
ObSet_Push(pObTcHT, *(PQWORD)(pbPartitionTable + o + 0x00) - 0x10); // store address in set & adjust for prepended pool header
o += 0x70;
}
}
if(VMMNET_PARTITIONTABLE_WIN10_1903(pbPartitionTable)) {
for(o = 0; o < 0x4000 - 0xc0 && VMMNET_PARTITIONTABLE_WIN10_1903(pbPartitionTable + o); o += 0xc0) {
ObSet_Push(pObTcHT, *(PQWORD)(pbPartitionTable + o + 0x00) - 0x10); // store address in set & adjust for prepended pool header
}
}
if(0 == ObSet_Size(pObTcHT)) { goto fail; }
VmmCachePrefetchPages3(pSystemProcess, pObTcHT, cbTcpHT, 0);
// 2: enumerate possible/interesting TCP hash tables - TcHT.
while((va = ObSet_Pop(pObTcHT))) {
ZeroMemory(pbTcHT, cbTcpHT);
VmmReadEx(pSystemProcess, va, pbTcHT, cbTcpHT, &cbRead, VMM_FLAG_FORCECACHE_READ);
if((cbTcpHT != cbRead) || (*(PDWORD)(pbTcHT + 0x04) != 'THcT')) { continue; }
for(i = 0; i < ctx->cPartition; i++) {
pTcpHT = (PRTL_DYNAMIC_HASH_TABLE)(pbTcHT + 0x10 + oStartHT) + i;
if(!VMM_KADDR64_16(pTcpHT->Directory) || (pTcpHT->TableSize != 0x80) || (pTcpHT->DivisorMask != 0x7f)) { break; }
if(!pTcpHT->NonEmptyBuckets) { continue; }
ObSet_Push(pObHTab, pTcpHT->Directory - 0x10); // store address in set & account for prepended pool header
}
}
if(0 == ObSet_Size(pObHTab)) { goto fail; }
VmmCachePrefetchPages3(pSystemProcess, pObHTab, 0x810, 0);
// 3: Enumerate TCP Endpoints 'TcpE' out of the potential 'HTab'
while((va = ObSet_Pop(pObHTab))) {
VmmReadEx(pSystemProcess, va, pb, 0x810, &cbRead, VMM_FLAG_FORCECACHE_READ);
if(0x810 != cbRead) { continue; }
if((*(PDWORD)(pb + 0x04) != 'baTH') && (ctxVmm->kernel.dwVersionBuild != 10240)) {
vmmprintfv_fn("UNEXPECTED POOL HDR: '%c%c%c%c' EXPECT: 'HTab' AT VA: 0x%016llx\n", pb[4], pb[5], pb[6], pb[7], va);
continue;
}
for(o = 0x10; o < 0x800; o += 0x10) {
va2 = *(PQWORD)(pb + o);
if((va + o == va2) || !VMM_KADDR64_16(va2)) { continue; }
ObSet_Push(pObTcpE, va2 - 0x50);
va3 = *(PQWORD)(pb + o + 8);
if((va + o == va3) || (va2 == va3) || !VMM_KADDR64_16(va2)) { continue; }
ObSet_Push(pObTcpE, va3 - 0x50);
}
}
if(0 == ObSet_Size(pObTcpE)) { goto fail; }
VmmCachePrefetchPages3(pSystemProcess, pObTcpE, 0x10, 0);
// 4: Verify and transfer to outgoing result set pObTcpE_Located
while((va = ObSet_Pop(pObTcpE))) {
VmmReadEx(pSystemProcess, va, pb, 0x10, &cbRead, VMM_FLAG_FORCECACHE_READ);
if(0x10 != cbRead) { continue; }
if(*(PDWORD)(pb + 0x04) != 'EpcT') {
vmmprintfv_fn("UNEXPECTED POOL HDR: '%c%c%c%c' EXPECT: 'TcpE' AT VA: 0x%016llx\n", pb[4], pb[5], pb[6], pb[7], va);
continue;
}
ObSet_Push(psvaOb_TcpEndpoints, va + 0x10);
}
if(0 == ObSet_Size(psvaOb_TcpEndpoints)) { goto fail; }
fResult = TRUE;
fail:
Ob_DECREF(pObTcHT);
Ob_DECREF(pObHTab);
Ob_DECREF(pObTcpE);
LocalFree(pbPartitionTable);
LocalFree(pbTcHT);
return fResult;
}
_Success_(return)
BOOL VmmNet_TcpE_Enumerate(_In_ PVMMNET_CONTEXT ctx, _In_ PVMM_PROCESS pSystemProcess, _In_ POB_SET pSet_TcpE, _Inout_ POB_MAP pmTcpE)
{
BOOL f;
QWORD va, vaEPROCESS;
DWORD cbRead, c = 0, i;
BYTE pb[0x400] = { 0 };
PVMM_MAP_NETENTRY pe;
POB_SET pObPrefetch = NULL;
PVMM_PROCESS pObProcess = NULL;
PVMMNET_OFFSET_TcpE po = &ctx->oTcpE;
QWORD vaINET_AF, vaINET_Addr, vaINET_Src, vaINET_Dst;
if(!(pObPrefetch = ObSet_New())) { goto fail; }
VmmCachePrefetchPages3(pSystemProcess, pSet_TcpE, po->_Size, 0);
// 1: retrieve general info from main struct (TcpE)
while((va = ObSet_Pop(pSet_TcpE))) {
VmmReadEx(pSystemProcess, va, pb, po->_Size, &cbRead, VMM_FLAG_FORCECACHE_READ);
if(po->_Size != cbRead) { continue; }
if(!VMM_KADDR64_8(*(PQWORD)(pb + po->EProcess)) || !VMM_KADDR64_8(*(PQWORD)(pb + po->INET_AF)) || !VMM_KADDR64_8(*(PQWORD)(pb + po->INET_Addr))) { continue; }
if(!(pe = LocalAlloc(LMEM_ZEROINIT, sizeof(VMM_MAP_NETENTRY)))) { continue; }
pe->dwPoolTag = 'TcpE';
pe->Dst.port = _byteswap_ushort(*(PWORD)(pb + po->PortDst));
pe->Src.port = _byteswap_ushort(*(PWORD)(pb + po->PortSrc));
pe->dwState = *(PWORD)(pb + po->State);
pe->vaObj = va;
pe->ftTime = *(PQWORD)(pb + po->Time);
pe->_Reserved1 = *(PQWORD)(pb + po->INET_AF); // vaINET_AF
pe->_Reserved2 = *(PQWORD)(pb + po->INET_Addr); // vaINET_Addr
vaEPROCESS = *(PQWORD)(pb + po->EProcess);
while((pObProcess = VmmProcessGetNext(pObProcess, VMM_FLAG_PROCESS_SHOW_TERMINATED))) {
if(vaEPROCESS == pObProcess->win.EPROCESS.va) {
pe->dwPID = pObProcess->dwPID;
Ob_DECREF_NULL(&pObProcess);
break;
}
}
ObSet_Push(pObPrefetch, pe->_Reserved1 - 0x10);
ObSet_Push(pObPrefetch, pe->_Reserved2);
ObMap_Push(pmTcpE, va, pe);
}
// 2: retrieve address family and ptr to address
VmmCachePrefetchPages3(pSystemProcess, pObPrefetch, 0x30, 0);
Ob_DECREF_NULL(&pObPrefetch);
if(!(pObPrefetch = ObSet_New())) { goto fail; }
for(i = 0, c = ObMap_Size(pmTcpE); i < c; i++) {
pe = ObMap_GetByIndex(pmTcpE, i);
vaINET_AF = pe->_Reserved1;
vaINET_Addr = pe->_Reserved2;
pe->_Reserved1 = 0;
pe->_Reserved2 = 0;
// 2.1 fetch INET_AF
VmmReadEx(pSystemProcess, vaINET_AF - 0x10, pb, 0x30, &cbRead, VMM_FLAG_FORCECACHE_READ);
if(0x30 != cbRead) { continue; }
if(*(PDWORD)(pb + 0x04) != 'lNnI') {
vmmprintfv_fn("UNEXPECTED POOL HDR: '%c%c%c%c' EXPECT: 'InNl' AT VA: 0x%016llx\n", pb[4], pb[5], pb[6], pb[7], vaINET_AF);
continue;
}
pe->AF = *(PWORD)(pb + 0x10 + po->INET_AF_AF);
if((pe->AF != AF_INET) && (pe->AF != AF_INET6)) {
vmmprintfv_fn("UNEXPECTED INET_AF: %i EXPECT: %i or %i AT VA: 0x%016llx\n", pe->AF, AF_INET, AF_INET6, vaINET_AF);
continue;
}
// 2.2 fetch ptrs to INET_ADDR SRC/DST and queue for prefetch
VmmReadEx(pSystemProcess, vaINET_Addr, pb, 0x18, &cbRead, VMM_FLAG_FORCECACHE_READ);
if((0x18 != cbRead) || !VMM_KADDR64_8(*(PQWORD)(pb + 0x00)) || !VMM_KADDR64_8(*(PQWORD)(pb + 0x10))) { continue; }
pe->_Reserved1 = *(PQWORD)(pb + 0x00); // vaINET_Src
pe->_Reserved2 = *(PQWORD)(pb + 0x10); // vaINET_Dst
ObSet_Push(pObPrefetch, pe->_Reserved1);
ObSet_Push(pObPrefetch, pe->_Reserved2);
}
// 3: retrieve src / dst addresses
VmmCachePrefetchPages3(pSystemProcess, pObPrefetch, 0x18, 0);
Ob_DECREF_NULL(&pObPrefetch);
for(i = 0, c = ObMap_Size(pmTcpE); i < c; i++) {
pe = ObMap_GetByIndex(pmTcpE, i);
vaINET_Src = pe->_Reserved1;
vaINET_Dst = pe->_Reserved2;
pe->_Reserved1 = 0;
pe->_Reserved2 = 0;
if((pe->AF == AF_INET) || (pe->AF == AF_INET6)) {
// 3.1 src address
VmmReadEx(pSystemProcess, vaINET_Src, pb, 0x18, &cbRead, VMM_FLAG_FORCECACHE_READ);
f = (0x18 == cbRead) &&
VMM_KADDR64_8(*(PQWORD)(pb + 0x10)) &&
VmmRead(pSystemProcess, *(PQWORD)(pb + 0x10), pb, 0x08) &&
VMM_KADDR64_8(*(PQWORD)pb) &&
VmmRead(pSystemProcess, *(PQWORD)pb, pb, 0x20);
if(f) {
pe->Src.fValid = TRUE;
memcpy(pe->Src.pbAddr, pb, (pe->AF == AF_INET) ? 4 : 16);
}
// 3.2 dst address
VmmReadEx(pSystemProcess, vaINET_Dst, pb, 0x20, &cbRead, VMM_FLAG_FORCECACHE_READ);
if(0x20 == cbRead) {
pe->Dst.fValid = TRUE;
memcpy(pe->Dst.pbAddr, pb, (pe->AF == AF_INET) ? 4 : 16);
}
}
}
return TRUE;
fail:
Ob_DECREF(pObPrefetch);
return FALSE;
}
/*
* Retrieve active TCP connections.
* NB! Function may be started asynchronously.
*/
DWORD VmmNet_TcpE_DoWork(PVOID lpThreadParameter)
{
PVMMNET_ASYNC_CONTEXT actx = (PVMMNET_ASYNC_CONTEXT)lpThreadParameter;
PVMMNET_CONTEXT ctx = actx->ctx;
PVMM_PROCESS pSystemProcess = actx->pSystemProcess;
POB_MAP pmNetEntries = actx->pmNetEntries;
POB_SET pObTcpE = NULL;
if(!(pObTcpE = ObSet_New())) { goto fail; }
if(!VmmNet_TcpE_GetAddressEPs(ctx, pSystemProcess, pObTcpE)) { goto fail; }
VmmNet_TcpE_Fuzz(ctx, pSystemProcess, ObSet_Get(pObTcpE, 0));
if(!ctx->oTcpE._fValid) { goto fail; }
if(!VmmNet_TcpE_Enumerate(ctx, pSystemProcess, pObTcpE, pmNetEntries)) { goto fail; }
fail:
Ob_DECREF(pObTcpE);
return 0;
}
// ----------------------------------------------------------------------------
// UDP ENDPOINT AND TCP LISTENER FUNCTIONALITY (VIA PORT POOL InPP) BELOW:
// ----------------------------------------------------------------------------
#define VMMNET_EP_OFFSET 0xC0
#define VMMNET_EP_SIZE 0x380
/*
* Filter for TcpL / UdpA
*/
VOID VmmNet_InPP_FilterTcpLUdpA(_In_ QWORD k, _In_ PVOID v, _Inout_opt_ PVOID ctx)
{
POB_MAP pm = ctx;
if((((PVMM_MAP_NETENTRY)v)->dwPoolTag == 'TcpL') || (((PVMM_MAP_NETENTRY)v)->dwPoolTag == 'UdpA')) {
ObMap_Push(pm, k, v);
}
}
/*
* Perform post processing of already enumerated UdpA / TcpL entries in map
* pmNetEntriesPre. Upon completion valid entries will be transferred to map
* pmNetEntries.
* -- ctx
* -- pSystemProcess
* -- pmNetEntriesPre = map of partial not-yet completed entries.
* -- pmNetEntries = result map of completed net entries.
*/
VOID VmmNet_InPP_PostTcpLUdpA(_In_ PVMMNET_CONTEXT ctx, _In_ PVMM_PROCESS pSystemProcess, _Inout_ POB_MAP pmNetEntriesPre, _Inout_ POB_MAP pmNetEntries)
{
DWORD o, cbRead;
BYTE pb[0x30] = { 0 };
POB_SET psObPrefetch = NULL;
POB_MAP pmOb = NULL;
QWORD vaINET_AF, vaLocal_Addr;
PVMM_MAP_NETENTRY pe = NULL;
if(!(pmOb = ObMap_New(0))) { goto fail; }
if(!(psObPrefetch = ObSet_New())) { goto fail; }
if(!ObMap_Filter(pmNetEntriesPre, pmOb, VmmNet_InPP_FilterTcpLUdpA)) { goto fail; }
// 1: prefetch
while((pe = ObMap_GetNext(pmOb, pe))) {
if(pe->_Reserved1) { ObSet_Push(psObPrefetch, pe->_Reserved1 - 0x10); }
if(pe->_Reserved2) { ObSet_Push(psObPrefetch, pe->_Reserved2); }
}
if(!ObSet_Size(psObPrefetch)) { goto fail; }
// 2: retrieve address family and ptr to address
VmmCachePrefetchPages3(pSystemProcess, psObPrefetch, 0x30, 0);
ObSet_Clear(psObPrefetch);
while((pe = ObMap_GetNext(pmOb, pe))) {
vaINET_AF = pe->_Reserved1;
vaLocal_Addr = pe->_Reserved2;
pe->_Reserved1 = 0;
pe->_Reserved2 = 0;
// 2.1 fetch INET_AF
VmmReadEx(pSystemProcess, vaINET_AF - 0x10, pb, 0x30, &cbRead, VMM_FLAG_FORCECACHE_READ);
if(0x30 != cbRead) { continue; }
if(*(PDWORD)(pb + 0x04) != 'lNnI') {
vmmprintfv_fn("UNEXPECTED POOL HDR: '%c%c%c%c' EXPECT: 'InNl' AT VA: 0x%016llx\n", pb[4], pb[5], pb[6], pb[7], vaINET_AF);
continue;
}
pe->AF = *(PWORD)(pb + 0x10 + ctx->oTcpL.INET_AF_AF);
if((pe->AF != AF_INET) && (pe->AF != AF_INET6)) {
vmmprintfv_fn("UNEXPECTED INET_AF: %i EXPECT: %i or %i AT VA: 0x%016llx\n", pe->AF, AF_INET, AF_INET6, vaINET_AF);
continue;
}
// 2.2 fetch ptrs to INET_ADDR SRC and queue for prefetch
if(vaLocal_Addr) {
o = ((pe->dwPoolTag == 'UdpA') && ctxVmm->kernel.dwVersionBuild >= 10240) ? 0x18 : 0x10; // UDP-Win10 special offset
VmmReadEx(pSystemProcess, vaLocal_Addr, pb, 0x20, &cbRead, VMM_FLAG_FORCECACHE_READ);
if((0x20 != cbRead) || !VMM_KADDR64_8(*(PQWORD)(pb + o))) { continue; }
pe->_Reserved2 = *(PQWORD)(pb + o); // vaSrc
ObSet_Push(psObPrefetch, pe->_Reserved2);
} else {
pe->Src.fValid = TRUE; // address 0.0.0.0
}
}
// 3: retrieve addr ptr
VmmCachePrefetchPages3(pSystemProcess, psObPrefetch, 8, 0);
ObSet_Clear(psObPrefetch);
while((pe = ObMap_GetNext(pmOb, pe))) {
if(pe->_Reserved2) {
vaLocal_Addr = pe->_Reserved2;
pe->_Reserved2 = 0;
VmmReadEx(pSystemProcess, vaLocal_Addr, pb, 8, &cbRead, VMM_FLAG_FORCECACHE_READ);
if((8 != cbRead) || !VMM_KADDR64_8(*(PQWORD)(pb))) { continue; }
pe->_Reserved2 = *(PQWORD)(pb); // vaSrc
ObSet_Push(psObPrefetch, pe->_Reserved2);
}
}
// 4: retrieve addr
VmmCachePrefetchPages3(pSystemProcess, psObPrefetch, 0x20, 0);
while((pe = ObMap_GetNext(pmOb, pe))) {
if(pe->_Reserved2) {
o = ((pe->dwPoolTag == 'UdpA') && ctxVmm->kernel.dwVersionBuild >= 10240) ? 0x18 : 0; // UDP-Win10 special offset
if(VmmRead2(pSystemProcess, pe->_Reserved2 + o, pb, 16, VMM_FLAG_FORCECACHE_READ)) {
pe->Src.fValid = TRUE;
memcpy(pe->Src.pbAddr, pb, (pe->AF == AF_INET) ? 4 : 16);
}
pe->_Reserved2 = 0;
}
ObMap_Remove(pmNetEntriesPre, pe);
ObMap_Push(pmNetEntries, pe->vaObj, pe);
}
fail:
Ob_DECREF(pmOb);
Ob_DECREF(psObPrefetch);
}
/*
* Enumerate PortPool TcpE entries. Enumeration is currently limited and will at
* this moment only look at forward linked entries.
* TODO: IMPLEMENT InPP-TcpE SUPPORT:
*/
PVMM_MAP_NETENTRY VmmNet_InPP_TcpE(_In_ PVMMNET_CONTEXT ctx, _In_ PVMM_PROCESS pSystemProcess, _In_ QWORD vaTcpE, _In_reads_(cb) PBYTE pb, _In_ DWORD cb, _Inout_ POB_SET psEP_Next)
{
QWORD vaNext = *(PQWORD)(pb + 0x70);
if(VMM_KADDR64(vaNext)) {
ObSet_Push(psEP_Next, (vaNext & ~7) - VMMNET_EP_OFFSET);
}
return NULL;
}
/*
* Enumerate PortPool UdpA / TcpL entries.
*/
PVMM_MAP_NETENTRY VmmNet_InPP_TcpL_UdpA(_In_ PVMMNET_CONTEXT ctx, _In_ PVMM_PROCESS pSystemProcess, _In_ DWORD dwPoolTag, PVMMNET_OFFSET_TcpL_UdpA po, _In_ QWORD vaTcpE_UdpA, _In_reads_(cb) PBYTE pb, _In_ DWORD cb, _Inout_ POB_SET psEP_Next)
{
DWORD c = 0;
QWORD ftTime, vaNext, vaEPROCESS;
PVMM_MAP_NETENTRY pe;
PVMM_PROCESS pObProcess = NULL;
vaNext = *(PQWORD)(pb + po->FLink);
if(VMM_KADDR64(vaNext)) {
ObSet_Push(psEP_Next, (vaNext & ~7) - VMMNET_EP_OFFSET);
}
if(!VMM_KADDR64_8(*(PQWORD)(pb + po->INET_AF))) { return NULL; }
if(!(pe = LocalAlloc(LMEM_ZEROINIT, sizeof(VMM_MAP_NETENTRY)))) { return NULL; }
pe->dwPoolTag = dwPoolTag;
pe->dwState = (dwPoolTag == 'TcpL') ? 1 : 13;
pe->Src.port = _byteswap_ushort(*(PWORD)(pb + po->LocalPort));
pe->vaObj = vaTcpE_UdpA;
ftTime = *(PQWORD)(pb + po->Time);
if(1 == (ftTime >> 56)) {
pe->ftTime = ftTime;
}
pe->_Reserved1 = *(PQWORD)(pb + po->INET_AF); // vaINET_AF
if(VMM_KADDR64_8(*(PQWORD)(pb + po->LocalAddr))) {
pe->_Reserved2 = *(PQWORD)(pb + po->LocalAddr); // vaLocalAddr
}
vaEPROCESS = *(PQWORD)(pb + po->EProcess);
if(VMM_KADDR64_16(vaEPROCESS)) {
while((pObProcess = VmmProcessGetNext(pObProcess, VMM_FLAG_PROCESS_SHOW_TERMINATED))) {
if(vaEPROCESS == pObProcess->win.EPROCESS.va) {
pe->dwPID = pObProcess->dwPID;
Ob_DECREF_NULL(&pObProcess);
break;
}
}
}
return pe;
}
/*
* Dispatch a PortPool entry to its enumeration function.
*/
VOID VmmNet_InPP_Dispatch(_In_ PVMMNET_CONTEXT ctx, _In_ PVMM_PROCESS pSystemProcess, _In_ DWORD tag, _In_ QWORD va, _In_reads_(cb) PBYTE pb, _In_ DWORD cb, _In_ DWORD oFLink, _Inout_ POB_SET psEP_Next, _Inout_ POB_MAP pmNetEntriesPre)
{
PVMM_MAP_NETENTRY pe;
PVMMNET_OFFSET_TcpL_UdpA po = &ctx->oTcpL;
if(ObMap_ExistsKey(pmNetEntriesPre, va)) { return; }
if(tag == 'TcpE') {
// TODO: IMPLEMENT SUPPORT FOR InPP-TcpE
VmmNet_InPP_TcpE(ctx, pSystemProcess, va, pb, cb, psEP_Next);
}
if(tag == 'TcpL') {
if((pe = VmmNet_InPP_TcpL_UdpA(ctx, pSystemProcess, 'TcpL', &ctx->oTcpL, va, pb, cb, psEP_Next))) {
ObMap_Push(pmNetEntriesPre, va, pe);
}
}
if(tag == 'UdpA') {
if((pe = VmmNet_InPP_TcpL_UdpA(ctx, pSystemProcess, 'UdpA', &ctx->oUdpA, va, pb, cb, psEP_Next))) {
ObMap_Push(pmNetEntriesPre, va, pe);
}
}
}
/*
* Enumerate PortPool entries and put valid ones into the result map.
* NB! Function may be started asynchronously.
*/
DWORD VmmNet_InPP_DoWork(PVOID lpThreadParameter)
{
PVMMNET_ASYNC_CONTEXT actx = (PVMMNET_ASYNC_CONTEXT)lpThreadParameter;
PVMMNET_CONTEXT ctx = actx->ctx;
PVMM_PROCESS pSystemProcess = actx->pSystemProcess;
POB_MAP pmNetEntries = actx->pmNetEntries;
DWORD cbInPPe, oInPPe, oInPA = 0, o, oFLink, tag;
QWORD i, j, va;
BYTE pb[0x2000], pb2[0x20];
POB_SET psObPA = NULL, psObPreEP = NULL, psObEP = NULL, psObEP_Next = NULL, psObEP_SWAP;
POB_MAP pmObNetEntriesPre = NULL;
if(!(psObPA = ObSet_New())) { goto fail; }
if(!(psObPreEP = ObSet_New())) { goto fail; }
if(!(psObEP = ObSet_New())) { goto fail; }
if(!(psObEP_Next = ObSet_New())) { goto fail; }
if(!(pmObNetEntriesPre = ObMap_New(OB_MAP_FLAGS_OBJECT_LOCALFREE))) { goto fail; }
// set offsets
if(ctxVmm->kernel.dwVersionBuild <= 9200) {
oInPPe = 0x08;
cbInPPe = 0x10;
} else if(ctxVmm->kernel.dwVersionBuild <= 18363) {
oInPPe = 0x08;
cbInPPe = 0x18;
} else {
oInPPe = 0x10;
cbInPPe = 0x20;
}
// fetch InPA
VmmCachePrefetchPages2(pSystemProcess, 2, ctx->vaTcpPortPool, ctx->vaUdpPortPool);
for(i = 0; i < 2; i++) {
if(!VmmRead2(pSystemProcess, i ? ctx->vaTcpPortPool : ctx->vaUdpPortPool, pb, 0x1000, VMM_FLAG_FORCECACHE_READ)) { continue; }
// offet for ptrs into InPA starts at +0a0 + extra, each InPA is responsible for 256 ports.
if(!oInPA) {
for(o = 0x0a0; o < 0x100; o += 8) {
va = *(PQWORD)(pb + o);
if(VMM_KADDR64_16(va) && !VMM_KADDR64_PAGE(va) && VmmRead(pSystemProcess, va - 0x10, pb2, 0x20) && VMM_POOLTAG_PREPENDED(pb2, 0x10, 'InPA')) {
oInPA = o;
break;
}
}
if(!oInPA) { goto fail; }
}
for(j = 0; j < 256; j++) {
va = *(PQWORD)(pb + oInPA + j * 8);
if(VMM_KADDR64_16(va)) {
ObSet_Push(psObPA, va - 0x10);
}
}
}
if(!ObSet_Size(psObPA)) { goto fail; }
// fetch InPA tables
VmmCachePrefetchPages3(pSystemProcess, psObPA, 0x40, 0);
while((va = ObSet_Pop(psObPA))) {
if(VmmRead2(pSystemProcess, va, pb, 0x40, VMM_FLAG_FORCECACHE_READ) && VMM_POOLTAG_PREPENDED(pb, 0x10, 'InPA')) {
va = *(PQWORD)(pb + 0x28);
if(!VMM_KADDR64_PAGE(va)) {
va = *(PQWORD)(pb + 0x30);
}
if(VMM_KADDR64_PAGE(va)) {
ObSet_Push(psObPreEP, va);
}
}
}
if(!ObSet_Size(psObPreEP)) { goto fail; }
// fetch initial addresses for endpoints / listeners.
VmmCachePrefetchPages(pSystemProcess, psObPreEP, 0);
while((va = ObSet_Pop(psObPreEP))) {
VmmRead2(pSystemProcess, va, pb, 256 * cbInPPe, VMM_FLAG_FORCECACHE_READ | VMM_FLAG_ZEROPAD_ON_FAIL);
for(i = 0; i < 256; i++) { // TODO - 0-255
va = *(PQWORD)(pb + i * cbInPPe + oInPPe) & ~7;
if(VMM_KADDR64_8(va)) {
ObSet_Push(psObEP, va - VMMNET_EP_OFFSET);
}
}
}
// fetch and process endpoints / listeners
while(ObSet_Size(psObEP) || ObSet_Size(psObEP_Next)) {
VmmCachePrefetchPages3(pSystemProcess, psObEP, VMMNET_EP_SIZE, 0);
while((va = ObSet_Pop(psObEP))) {
oFLink = VMMNET_EP_OFFSET;
if(va & 8) {
oFLink -= 8;
va += 8;
}
VmmRead2(pSystemProcess, va, pb, VMMNET_EP_SIZE, VMM_FLAG_FORCECACHE_READ | VMM_FLAG_ZEROPAD_ON_FAIL);
for(o = 0x10; o < 0x80; o += 0x10) {
tag = 0;
if(VMM_POOLTAG_PREPENDED(pb, o, 'TcpL')) { tag = 'TcpL'; }
if(VMM_POOLTAG_PREPENDED(pb, o, 'TcpE')) { tag = 'TcpE'; }
if(VMM_POOLTAG_PREPENDED(pb, o, 'UdpA')) { tag = 'UdpA'; }
if(tag) {
VmmNet_InPP_Dispatch(ctx, pSystemProcess, tag, va + o, pb + o, VMMNET_EP_SIZE - 8 - o, oFLink - o, psObEP_Next, pmObNetEntriesPre);
break;
}
}
}
psObEP_SWAP = psObEP;
psObEP = psObEP_Next;
psObEP_Next = psObEP_SWAP;
}
// post processing of entries
// TODO: add post processing of InPP-TcpE
VmmNet_InPP_PostTcpLUdpA(ctx, pSystemProcess, pmObNetEntriesPre, pmNetEntries);
fail:
Ob_DECREF(psObEP_Next);
Ob_DECREF(psObEP);
Ob_DECREF(psObPreEP);
Ob_DECREF(psObPA);
Ob_DECREF(pmObNetEntriesPre);
return 0;
}
// ----------------------------------------------------------------------------
// INITIALIZATION / MAP CREATE FUNCTIONALITY BELOW:
// ----------------------------------------------------------------------------
VOID VmmNet_CallbackCleanup_ObMapNet(PVMMOB_MAP_NET pOb)
{
LocalFree(pOb->wszMultiText);
}
/*
* Set static offsets for the 'TcpL' / 'UdpA' structs depending on OS version.
*/
VOID VmmNet_Initialize_Context_Fuzz_TcpL_UdpA(_In_ PVMMNET_CONTEXT ctx)
{
PVMMNET_OFFSET_TcpL_UdpA po;
// TcpL
po = &ctx->oTcpL;
if(ctxVmm->kernel.dwVersionBuild < 10240) {
// VISTA - WIN8.1
po->INET_AF = 0x60;
po->EProcess = 0x28;
po->LocalAddr = 0x58;
po->LocalPort = 0x6a;
po->FLink = 0x70;
} else {
// WIN10
po->INET_AF = 0x28;
po->EProcess = 0x30;
po->Time = 0x40;
po->LocalAddr = 0x60;
po->LocalPort = 0x72;
po->FLink = 0x78;
}
po->INET_AF_AF = (ctxVmm->kernel.dwVersionBuild < 9200) ? 0x14 : 0x18; // VISTA-WIN7 or WIN8+
po->_Size = po->FLink + 8;
// UdpA
po = &ctx->oUdpA;
if(ctxVmm->kernel.dwVersionBuild < 10240) {
// VISTA - WIN8.1
po->LocalAddr = 0x60;
po->LocalPort = 0x80;
po->FLink = 0x88;
} else {
// WIN10
po->LocalAddr = 0x80;
po->LocalPort = 0x78;
po->FLink = 0x70;
}
po->INET_AF = 0x20;
po->EProcess = 0x28;
po->Time = 0x58;
po->INET_AF_AF = (ctxVmm->kernel.dwVersionBuild < 9200) ? 0x14 : 0x18; // VISTA-WIN7 or WIN8+
po->_Size = po->FLink + 8;
}
/*
* Helper function for VmmNet_Initialize_Context in order to locate the TCP/UDP
* port pool structures in memory on more recent Windows 10 systems.
* The port pool may be located by traversing pool allocations such as:
* tcpip!TcpCompartmentSet [InCS] -> [InCo] -> [TcCo/UdCo] -> [InPP large].
* -- pSystemProcess
* -- vaInCS
* -- dwTagTcpUdp
* -- return = address of TcpPortPool / UdpPortPool on success, zero on fail.
*/
QWORD VmmNet_Initialize_Context_PortPool(_In_ PVMM_PROCESS pSystemProcess, _In_ QWORD vaInCS, _In_ DWORD dwTagTcpUdp)
{
BOOL f;
BYTE pb[0x200];
POB_SET psvaOb = NULL;
QWORD o, va, vaTcCo = 0, vaInPP = 0;
// 1: InCS struct
if(!(psvaOb = ObSet_New())) { goto fail; }
if(!VmmRead(pSystemProcess, vaInCS - 0x10, pb, 0x180)) { goto fail; }
if(!VMM_POOLTAG_PREPENDED(pb, 0x10, 'InCS')) { goto fail; }
for(o = 0x10; o < 0x180; o += 8) {
va = *(PQWORD)(pb + o);
if(VMM_KADDR64_16(va)) {
ObSet_Push(psvaOb, va - 0x10);
}
}
// 2: InCo struct
VmmCachePrefetchPages3(pSystemProcess, psvaOb, 0x40, 0);
while((va = ObSet_Pop(psvaOb))) {
f = VmmRead2(pSystemProcess, va, pb, 0x40, VMM_FLAG_FORCECACHE_READ) &&
VMM_POOLTAG_PREPENDED(pb, 0x10, 'InCo') &&
(va = *(PQWORD)(pb + 0x30)) &&
VMM_KADDR64_16(va);
if(f) {
vaTcCo = va;
break;
}
}
if(!vaTcCo) { goto fail; }
// 3: TcCo/UdCo struct
f = VmmRead(pSystemProcess, vaTcCo - 0x10, pb, 0x20) &&
VMM_POOLTAG_PREPENDED(pb, 0x10, dwTagTcpUdp) &&
(vaInPP = *(PQWORD)(pb + 0x10)) &&
VMM_KADDR64_PAGE(vaInPP);
if(!f) { vaInPP = 0; }
fail:
Ob_DECREF(psvaOb);
return vaInPP;
}
/*
* Initialize the network context containing various offsets and other
* required data to look up networking information.
* -- pSystemProcess
*/
VOID VmmNet_Initialize_Context(_In_ PVMM_PROCESS pSystemProcess)
{
BOOL fResult = FALSE;
QWORD va;
PVMMNET_CONTEXT ctx = NULL;
PVMMOB_MAP_MODULE pObModuleMap = NULL;
PVMM_MAP_MODULEENTRY peModuleTcpip;
if(!(ctx = LocalAlloc(LMEM_ZEROINIT, sizeof(VMMNET_CONTEXT)))) { goto fail; }
// 1: fetch pdb handle
if(!VmmMap_GetModuleEntryEx(pSystemProcess, 0, L"tcpip.sys", &pObModuleMap, &peModuleTcpip)) { goto fail; }
ctx->vaModuleTcpip = peModuleTcpip->vaBase;
if(!(ctx->hPDB = PDB_GetHandleFromModuleAddress(pSystemProcess, ctx->vaModuleTcpip))) { goto fail; }
if(!PDB_LoadEnsure(ctx->hPDB)) { goto fail; }
// 2: retrieve pdb information
PDB_GetSymbolPTR(ctx->hPDB, "PartitionTable", pSystemProcess, &ctx->vaPartitionTable);
PDB_GetSymbolDWORD(ctx->hPDB, "PartitionCount", pSystemProcess, &ctx->cPartition);
if(!VMM_KADDR(ctx->vaPartitionTable) || !ctx->cPartition || (ctx->cPartition > 64)) { goto fail; }
// 3: retrieve TcpPortPool / UdpPortPool
if(ctxVmm->kernel.dwVersionBuild <= 10586) {
PDB_GetSymbolPTR(ctx->hPDB, "TcpPortPool", pSystemProcess, &ctx->vaTcpPortPool);
PDB_GetSymbolPTR(ctx->hPDB, "UdpPortPool", pSystemProcess, &ctx->vaUdpPortPool);
} else {
if(PDB_GetSymbolPTR(ctx->hPDB, "TcpCompartmentSet", pSystemProcess, &va)) {
ctx->vaTcpPortPool = VmmNet_Initialize_Context_PortPool(pSystemProcess, va, 'TcCo');
}
if(PDB_GetSymbolPTR(ctx->hPDB, "UdpCompartmentSet", pSystemProcess, &va)) {
ctx->vaUdpPortPool = VmmNet_Initialize_Context_PortPool(pSystemProcess, va, 'UdCo');
}
}
// 4: set offsets
VmmNet_Initialize_Context_Fuzz_TcpL_UdpA(ctx);
vmmprintfvv_fn("NET INIT: \n\t PartitionTable: 0x%llx [%i] \n\t TcpPortPool: 0x%llx \n\t UdpPortPool: 0x%llx\n", ctx->vaPartitionTable, ctx->cPartition, ctx->vaTcpPortPool, ctx->vaUdpPortPool);
fResult = TRUE;
fail:
if(!fResult) {
LocalFree(ctx);
ctx = NULL;
}
Ob_DECREF(pObModuleMap);
ctxVmm->pNetContext = ctx;
}
/*
* Retrieve a Map containing the network connections of the system if possible.
* CALLER DECREF: return
* -- pSystemProcess
* -- return
*/
PVMMOB_MAP_NET VmmNet_Initialize_DoWork(_In_ PVMM_PROCESS pSystemProcess)
{
PVMMNET_CONTEXT ctx = (PVMMNET_CONTEXT)ctxVmm->pNetContext;
LPCWSTR wszSTATES[] = {
L"CLOSED",
L"LISTENING",
L"SYN_SENT",
L"SYN_RCVD",
L"ESTABLISHED",
L"FIN_WAIT_1",
L"FIN_WAIT_2",
L"CLOSE_WAIT",
L"CLOSING",
L"LAST_ACK",
L"***",
L"***",
L"TIME_WAIT",
L"***"
};
DWORD i, cNetEntries, cchMultiText;
PVMMOB_MAP_NET pObNet = NULL;
PVMM_MAP_NETENTRY pe, pNetEntry;
DWORD dwIpVersion, cwszSrc, cwszDst;
WCHAR wszSrc[64], wszDst[64];
POB_MAP pmObNetEntries = NULL;
VMMNET_ASYNC_CONTEXT actx;
// 1: fetch / initialize context
if(ctxVmm->f32) { goto fail; }
if(!ctx) {
VmmNet_Initialize_Context(pSystemProcess);
if(!(ctx = (PVMMNET_CONTEXT)ctxVmm->pNetContext)) { goto fail; }
}
if(!(pmObNetEntries = ObMap_New(OB_MAP_FLAGS_OBJECT_LOCALFREE))) { goto fail; }
// enumeration may take some time - schedule work in parallel to speed things up.
actx.ctx = ctx;
actx.pmNetEntries = pmObNetEntries;
actx.pSystemProcess = pSystemProcess;
VmmWorkWaitMultiple(&actx, 2, VmmNet_TcpE_DoWork, VmmNet_InPP_DoWork);
cNetEntries = ObMap_Size(pmObNetEntries);
if(!(pObNet = Ob_Alloc(OB_TAG_MAP_NET, LMEM_ZEROINIT, sizeof(VMMOB_MAP_NET) + cNetEntries * sizeof(VMM_MAP_NETENTRY), VmmNet_CallbackCleanup_ObMapNet, NULL))) { goto fail; }
if(!(pObNet->wszMultiText = LocalAlloc(LMEM_ZEROINIT, 0x01000000))) { goto fail; }
memcpy(pObNet->wszMultiText, L"\0***\0", 10);
cchMultiText = 5;
for(i = 0; i < cNetEntries; i++) {
pe = pObNet->pMap + i;
pNetEntry = ObMap_GetByIndex(pmObNetEntries, i);
memcpy(pe, pNetEntry, sizeof(VMM_MAP_NETENTRY));
// src
if(pe->Src.fValid && (pe->Src.wszText = (LPWSTR)InetNtopW(pe->AF, pe->Src.pbAddr, pObNet->wszMultiText + cchMultiText, 64))) {
cchMultiText += (DWORD)wcslen(pObNet->wszMultiText + cchMultiText) + 1;
}
if(!pe->Src.wszText) { pe->Src.wszText = pObNet->wszMultiText + 1; }
// dst
if(pe->Dst.fValid && (pe->Dst.wszText = (LPWSTR)InetNtopW(pe->AF, pe->Dst.pbAddr, pObNet->wszMultiText + cchMultiText, 64))) {
cchMultiText += (DWORD)wcslen(pObNet->wszMultiText + cchMultiText) + 1;
}
if(!pe->Dst.wszText) { pe->Dst.wszText = pObNet->wszMultiText + 1; }
// wsz
dwIpVersion = (pe->AF == AF_INET) ? 4 : ((pe->AF == AF_INET6) ? 6 : 0);
cwszSrc = _snwprintf_s(wszSrc, _countof(wszSrc), _TRUNCATE, ((dwIpVersion == 6) ? L"[%s]:%i" : L"%s:%i"), pe->Src.wszText, pe->Src.port);
cwszDst = pe->Dst.fValid ?
_snwprintf_s(wszDst, _countof(wszDst), _TRUNCATE, ((dwIpVersion == 6) ? L"[%s]:%i" : L"%s:%i"), pe->Dst.wszText, pe->Dst.port) :
_snwprintf_s(wszDst, _countof(wszDst), _TRUNCATE, L"***");
pe->wszText = pObNet->wszMultiText + cchMultiText;
pe->cwszText = _snwprintf_s(
pe->wszText,
0x100,
0x100,
L"%sv%i %-11s %-*s %-*s",
((pe->dwPoolTag == 'UdpA') ? L"UDP" : L"TCP"),
dwIpVersion,
wszSTATES[pe->dwState],
max(28, cwszSrc),
wszSrc,
max(28, cwszDst),
wszDst
);
cchMultiText += pe->cwszText + 1;
pObNet->cMap++;
if(cchMultiText > 0x00800000 - 0x1000) { break; }
}
qsort(pObNet->pMap, pObNet->cMap, sizeof(VMM_MAP_NETENTRY), (int(*)(void const*, void const*))VmmNet_TcpE_CmpSort);
pObNet->cbMultiText = cchMultiText * sizeof(WCHAR);
if(pObNet->wszMultiText != LocalReAlloc(pObNet->wszMultiText, pObNet->cbMultiText, 0)) { goto fail; }
Ob_INCREF(pObNet);
fail:
Ob_DECREF(pmObNetEntries);
return Ob_DECREF(pObNet);
}
/*
* Create a network connection map and assign to the global context upon success.
* CALLER DECREF: return
* -- return
*/
PVMMOB_MAP_NET VmmNet_Initialize()
{
PVMMOB_MAP_NET pObNet = NULL;
PVMM_PROCESS pObSystemProcess = NULL;
if((pObNet = ObContainer_GetOb(ctxVmm->pObCMapNet))) { return pObNet; }
EnterCriticalSection(&ctxVmm->LockUpdateMap);
if((pObNet = ObContainer_GetOb(ctxVmm->pObCMapNet))) {
LeaveCriticalSection(&ctxVmm->LockUpdateMap);
return pObNet;
}
if((pObSystemProcess = VmmProcessGet(4))) {
pObNet = VmmNet_Initialize_DoWork(pObSystemProcess);
Ob_DECREF_NULL(&pObSystemProcess);
}
if(!pObNet) {
pObNet = Ob_Alloc(OB_TAG_MAP_NET, LMEM_ZEROINIT, sizeof(VMMOB_MAP_NET), NULL, NULL);
if(pObNet) {
pObNet->wszMultiText = (LPWSTR)&pObNet->cbMultiText; // NULL CHAR guaranteed.
}
}
ObContainer_SetOb(ctxVmm->pObCMapNet, pObNet);
LeaveCriticalSection(&ctxVmm->LockUpdateMap);
return pObNet;
}
/*
* Close the networking functionality.
* NB! Close() should only be called on vmm exit. To clear internal state plesae
* use function: VmmNet_Refresh().
*/
VOID VmmNet_Close()
{
EnterCriticalSection(&ctxVmm->LockMaster);
LocalFree(ctxVmm->pNetContext);
ctxVmm->pNetContext = NULL;
LeaveCriticalSection(&ctxVmm->LockMaster);
}
/*
* Refresh the network connection map.
*/
VOID VmmNet_Refresh()
{
ObContainer_SetOb(ctxVmm->pObCMapNet, NULL);
}