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windows-nt/Source/XPSP1/NT/shell/browseui/emclient/regdb.cpp

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2020-09-26 03:20:57 -05:00
#include "priv.h"
#include <runtask.h>
#include "uacount.h"
#include "regdb.h"
#include "uemapp.h"
#include "uareg.h"
#define DM_UEMTRACE TF_UEM
#define DM_PERF 0 // perf tune
#define DB_NOLOG FALSE
#define SZ_CTLSESSION TEXT("UEME_CTLSESSION")
#define SZ_CUACount_ctor TEXT("UEME_CTLCUACount:ctor")
#define SZ_DEL_PREFIX TEXT("del.")
#define SZ_RUN_PREFIX TEXT("UEME_RUN")
//*** Reg_CreateOpenKey -- merged RegCreate/RegOpen
//
HKEY Reg_CreateOpenKey(HKEY hkey, LPCTSTR pszSubKey, DWORD grfMode)
{
HKEY hkeyNew = 0;
long i;
CHAR szSubKey[MAXIMUM_SUB_KEY_LENGTH];
SHTCharToAnsi(pszSubKey, szSubKey, ARRAYSIZE(szSubKey));
ASSERT(grfMode == STGM_READ || grfMode == STGM_WRITE);
ASSERT(pszSubKey != NULL);
if (pszSubKey != NULL) {
if (grfMode == STGM_READ) {
i = RegOpenKeyA(hkey, szSubKey, &hkeyNew);
}
else {
i = RegCreateKeyA(hkey, szSubKey, &hkeyNew);
}
// the following ASSERT is not req'd but is currently always true.
// if you hit it, the bug is someplace in the caller.
// i.e. do *not* remove this ASSERT to 'fix' your pblm.
// a typical cause of failure is that CoCreateInst is failing because
// something isn't properly regsvr32'ed.
ASSERT(i == ERROR_SUCCESS || hkeyNew == 0);
}
return hkeyNew;
}
//***
// DESCRIPTION
// inc this any time you change the format of *anything* below {guid}
// doing so will cause us to nuke the {guid} subtree and start fresh
#define UA_VERSION 3
#if 0
char c_szDotDot[] = TEXT(".."); // RegStrFS does *not* support
#endif
// kind of hoaky to do INITGUID, but we want the GUID private to this file
#define INITGUID
#include <initguid.h>
// {C28EB156-523C-11d2-A561-00A0C92DBFE8}
DEFINE_GUID(CLSID_GCTaskTOID,
0xc28eb156, 0x523c, 0x11d2, 0xa5, 0x61, 0x0, 0xa0, 0xc9, 0x2d, 0xbf, 0xe8);
#undef INITGUID
class CGCTask : public CRunnableTask
{
public:
//*** IUnknown
// (... from CRunnableTask)
//*** THISCLASS
HRESULT Initialize(CEMDBLog *that);
virtual STDMETHODIMP RunInitRT();
protected:
CGCTask();
virtual ~CGCTask();
friend CGCTask *CGCTask_Create(CEMDBLog *that);
CEMDBLog *_that;
};
// {
//*** CEMDBLog --
//CRITICAL_SECTION g_csDbSvr /*=0*/ ;
CEMDBLog *g_uempDbSvr[UEMIND_NSTANDARD + UEMIND_NINSTR]; // 0=shell 1=browser
//*** g_fDidUAGC -- breadcrumbs in case we die (even non-DEBUG)
// keep minimal state in case we deadlock or die or whatever
// 0:not 1:pre-task 2:pre-GC 3:post-GC
int g_fDidUAGC;
FNNRW3 CEMDBLog::s_Nrw3Info = {
CEMDBLog::s_Read,
CEMDBLog::s_Write,
CEMDBLog::s_Delete,
};
//*** helpers {
//***
// NOTES
// or, could use Reg_CreateOpenKey(..., STGM_READ) if we removed the asserts
STDAPI_(DWORD) SHRegOpenKey(HKEY hk, LPCTSTR ptszSubKey, PHKEY phkOut)
{
long i;
CHAR szSubKey[MAXIMUM_SUB_KEY_LENGTH];
CHAR *psz;
if (ptszSubKey) {
SHTCharToAnsi(ptszSubKey, szSubKey, ARRAYSIZE(szSubKey));
psz = szSubKey;
}
else {
psz = NULL;
}
i = RegOpenKeyA(hk, psz, phkOut);
return (DWORD)i;
}
STDAPI_(DWORD) SHRegOpenKeyEx(HKEY hk, LPCTSTR ptszSubKey, DWORD dwReserved, REGSAM samDesired, PHKEY phkOut)
{
long i;
CHAR szSubKey[MAXIMUM_SUB_KEY_LENGTH];
CHAR *psz;
if (ptszSubKey) {
SHTCharToAnsi(ptszSubKey, szSubKey, ARRAYSIZE(szSubKey));
psz = szSubKey;
}
else {
psz = NULL;
}
i = RegOpenKeyExA(hk, psz, dwReserved, samDesired, phkOut);
return (DWORD)i;
}
#define E_NUKE (E_FAIL + 1)
//*** RegGetVersion -- check registry tree 'Version'
// ENTRY/EXIT
// (see RegChkVersion)
// hr (ret) S_OK:ok S_FALSE:no tree E_NUKE:old E_FAIL:new
HRESULT RegGetVersion(HKEY hk, LPTSTR pszSubkey, LPTSTR pszValue, DWORD dwVers)
{
HRESULT hr;
HKEY hk2;
DWORD dwData;
DWORD cbSize;
if (!pszValue)
pszValue = TEXT("Version");
hr = S_FALSE; // assume nothing there at all
if (SHRegOpenKey(hk, pszSubkey, &hk2) == ERROR_SUCCESS) {
hr = E_NUKE; // assume version mismatch
cbSize = SIZEOF(dwData);
if (SHGetValue(hk2, NULL, pszValue, NULL, (BYTE*)&dwData, &cbSize) == ERROR_SUCCESS) {
if (dwData == dwVers)
hr = S_OK; // great!
else if (dwData > dwVers)
hr = E_FAIL; // we're an old client, fail
else
ASSERT(hr == E_NUKE); // we're a new client, nuke it
}
RegCloseKey(hk2);
}
return hr;
}
//*** RegChkVersion -- check registry tree 'version', nuke if outdated
// ENTRY/EXIT
// hk e.g. hkey for "HKCU/.../Uassist"
// pszSubkey e.g. "{clsid}"
// pszValue e.g. "Version"
// dwVers e.g. 3
// hr (ret) S_OK:matched, S_FAIL:mismatched and del'ed, E_FAIL:o.w.
// (other) (SE) pszSubkey deleted if not matched
HRESULT RegChkVersion(HKEY hk, LPTSTR pszSubkey, LPTSTR pszValue, DWORD dwVers)
{
HRESULT hr;
DWORD i;
// RegGetVersion() S_OK:ok S_FALSE:new E_NUKE:old E_FAIL:fail
hr = RegGetVersion(hk, pszSubkey, pszValue, dwVers);
// at this point, we have:
// S_OK: ok
// S_FALSE: entire tree missing
// E_NUKE: no "Version" or old version (nuke it)
// E_FAIL: new version (we can't handle it)
if (hr == E_FAIL) {
TraceMsg(DM_UEMTRACE, "bui.rcv: incompat (uplevel)");
}
if (hr == E_NUKE) {
TraceMsg(DM_UEMTRACE, "bui.rcv: bad tree, try delete");
hr = S_FALSE; // assume nuked
i = SHDeleteKey(hk, pszSubkey);
if (i != ERROR_SUCCESS) {
TraceMsg(DM_UEMTRACE, "bui.rcv: delete failed!");
hr = E_FAIL; // bogus tree left laying around
}
}
TraceMsg(DM_UEMTRACE, "bui.rcv: hr=0x%x", hr);
return hr;
}
//*** GetUEMLogger -- get the (shared) instance of our logger object
// NOTES
// BY DESIGN: we leak g_uempDbSvr.
// race condition on g_uempDbSvr. our caller guards against this.
// the 5 billion ASSERTs below were for diagnosing nt5:145449 (fixed).
HRESULT GetUEMLogger(int iSvr, CEMDBLog **p)
{
HRESULT hr, hrVers;
CEMDBLog *pDbSvr;
DWORD dwData, cbSize;
ASSERT(iSvr < ARRAYSIZE(g_uempDbSvr));
pDbSvr = g_uempDbSvr[iSvr];
if (pDbSvr) {
pDbSvr->AddRef();
*p = pDbSvr;
return S_OK;
}
pDbSvr = CEMDBLog_Create();
if (EVAL(pDbSvr)) {
TCHAR szClass[GUIDSTR_MAX]; // "{clsid}"
SHStringFromGUID(IND_NONINSTR(iSvr) ? UEMIID_BROWSER : UEMIID_SHELL, szClass, GUIDSTR_MAX);
TraceMsg(DM_UEMTRACE, "bui.gul: UEMIID_%s=%s", IND_NONINSTR(iSvr) ? TEXT("BROWSER") : TEXT("SHELL"), szClass);
hr = pDbSvr->ChDir(!IND_ISINSTR(iSvr) ? SZ_UASSIST : SZ_UASSIST2);
if (SUCCEEDED(hr)) {
hrVers = RegChkVersion(pDbSvr->GetHkey(), szClass, SZ_UAVERSION, UA_VERSION);
if (FAILED(hrVers)) {
TraceMsg(DM_UEMTRACE, "bui.gul: rcv()=0x%x (!)", hrVers);
hr = hrVers;
}
}
if (SUCCEEDED(hr)) {
hr = pDbSvr->ChDir(szClass);
ASSERT(hrVers == S_OK || hrVers == S_FALSE);
if (SUCCEEDED(hr) && hrVers == S_FALSE) {
dwData = UA_VERSION;
cbSize = SIZEOF(dwData);
hr = pDbSvr->SetValue(SZ_UAVERSION, REG_DWORD, (BYTE*)&dwData, cbSize);
}
}
if (SUCCEEDED(hr))
hr = pDbSvr->ChDir(SZ_COUNT);
// n.b. we can't call pDbSvr->GarbageCollect here since flags
// (e.g. _fNoDecay) not set yet
// pDbSvr->GarbageCollect(FALSE);
if (FAILED(hr))
{
// this fails during RunOnce
pDbSvr->Release();
pDbSvr = NULL;
}
}
if (pDbSvr) {
ENTERCRITICAL;
if (g_uempDbSvr[iSvr] == 0) {
g_uempDbSvr[iSvr] = pDbSvr; // xfer refcnt
pDbSvr = NULL;
}
LEAVECRITICAL;
if (pDbSvr)
pDbSvr->Release();
}
*p = g_uempDbSvr[iSvr];
return *p ? S_OK : E_FAIL;
}
CEMDBLog::CEMDBLog() : _cRef(1)
{
ASSERT(_fBackup == FALSE);
ASSERT(_fNoEncrypt == FALSE);
return;
}
CEMDBLog::~CEMDBLog()
{
#if XXX_CACHE
int i;
for (i = 0; i < ARRAYSIZE(_rgCache); i++)
{
if (_rgCache[i].pv)
{
LocalFree(_rgCache[i].pv);
_rgCache[i].pv = NULL;
_rgCache[i].cbSize = 0;
}
}
#endif
SetRoot(0, STGM_READ); // close
ASSERT(!_hkey);
return;
}
void CEMDBLog_CleanUp()
{
int i;
CEMDBLog *pDbSvr;
TraceMsg(DM_UEMTRACE, "bui.uadb_cu: cleaning up");
for (i = 0; i < UEMIND_NSTANDARD + UEMIND_NINSTR; i++) {
if ((pDbSvr = (CEMDBLog *)InterlockedExchangePointer((void**) &g_uempDbSvr[i], (LPVOID) -1)))
delete pDbSvr;
}
return;
}
HRESULT CEMDBLog::Initialize(HKEY hkey, DWORD grfMode)
{
HRESULT hr;
hr = SetRoot(hkey, grfMode);
return hr;
}
//***
// hkey e.g. HKLM
// pszSubKey e.g. "...\\Explorer\\Instance\\{...}"
// grfMode subset of STGM_* values
HRESULT CEMDBLog::SetRoot(HKEY hkeyNew, DWORD grfMode)
{
ASSERT(grfMode == STGM_READ || grfMode == STGM_WRITE);
if (_hkey) {
RegCloseKey(_hkey);
_grfMode = 0;
_hkey = 0;
}
if (hkeyNew) {
_grfMode = grfMode;
_hkey = SHRegDuplicateHKey(hkeyNew); // xfer ownership (and up khey refcnt)
if (_hkey == NULL)
return E_FAIL;
}
return S_OK;
}
HRESULT CEMDBLog::ChDir(LPCTSTR pszSubKey)
{
HRESULT hr = E_FAIL;
HKEY hkeyNew;
ASSERT(_hkey);
ASSERT(_grfMode == STGM_READ || _grfMode == STGM_WRITE);
hkeyNew = Reg_CreateOpenKey(_hkey, pszSubKey, _grfMode);
if (hkeyNew) {
RegCloseKey(_hkey);
_hkey = hkeyNew;
hr = S_OK;
}
return hr;
}
HRESULT CEMDBLog::QueryValueStr(LPCTSTR pszName, LPTSTR pszVal, LPDWORD pcbVal)
{
long i;
CHAR szSubKey[MAXIMUM_SUB_KEY_LENGTH];
CHAR szStrData[MAX_URL_STRING];
DWORD cbSize = sizeof(szStrData);
SHTCharToAnsi(pszName, szSubKey, ARRAYSIZE(szSubKey));
i = SHQueryValueExA(_hkey, szSubKey, NULL, NULL, (BYTE*)szStrData, &cbSize);
ASSERT((int)*pcbVal > lstrlenA(szStrData)); // I better be using a big enough buffer.
SHAnsiToTChar(szStrData, pszVal, *pcbVal / sizeof(TCHAR));
if (pcbVal)
*pcbVal = lstrlen(pszVal);
return (i == ERROR_SUCCESS) ? S_OK : E_FAIL;
}
HRESULT CEMDBLog::SetValueStr(LPCTSTR pszName, LPCTSTR pszVal)
{
return SetValueStrEx(pszName, REG_SZ, pszVal);
}
HRESULT CEMDBLog::SetValueStrEx(LPCTSTR pszName, DWORD dwType, LPCTSTR pszVal)
{
long i;
int cbTmp;
CHAR szSubKey[MAXIMUM_SUB_KEY_LENGTH];
CHAR szStrData[MAX_URL_STRING];
SHTCharToAnsi(pszName, szSubKey, ARRAYSIZE(szSubKey));
SHTCharToAnsi(pszVal, szStrData, ARRAYSIZE(szStrData));
ASSERT(_grfMode == STGM_WRITE);
cbTmp = (lstrlenA(szStrData) + 1);
i = RegSetValueExA(_hkey, szSubKey, NULL, dwType, (BYTE*)szStrData, cbTmp);
return (i == ERROR_SUCCESS) ? S_OK : E_FAIL;
}
// }
// }
// {
//*** CEMDBLog -- file-system-like view of registry
// DESCRIPTION
// basically keeps track of where we are and does 'relative' opens from
// there. NYI: intent is to eventually support 'chdir' ops.
// NOTES
//
CEMDBLog *CEMDBLog_Create()
{
HKEY hk = SHGetShellKey(SHELLKEY_HKCU_EXPLORER, NULL, TRUE);
if (hk)
{
CEMDBLog *prsfs = new CEMDBLog;
if (prsfs && FAILED(prsfs->Initialize(hk, STGM_WRITE))) {
prsfs->Release();
prsfs = NULL;
}
RegCloseKey(hk);
return prsfs;
}
return NULL;
}
//*** IsREG_XX_SZ -- see if ansi/unicode is an issue
//
#define IsREG_XX_SZ(dwTyp) \
((dwTyp) == REG_SZ || (dwTyp) == REG_MULTI_SZ || (dwTyp) == REG_EXPAND_SZ)
HRESULT CEMDBLog::QueryValue(LPCTSTR pszName, BYTE *pbData, LPDWORD pcbData)
{
long i;
DWORD dwType;
CHAR szaTmp[MAX_URL_STRING];
// we need to thunk since no RegXxxValueW on win95
SHTCharToAnsi(pszName, szaTmp, ARRAYSIZE(szaTmp));
i = SHQueryValueExA(_hkey, szaTmp, NULL, &dwType, pbData, pcbData);
ASSERT(i != ERROR_SUCCESS || !IsREG_XX_SZ(dwType));
return (i == ERROR_SUCCESS) ? S_OK : E_FAIL;
}
HRESULT CEMDBLog::SetValue(LPCTSTR pszName, DWORD dwType, const BYTE *pbData, DWORD cbData)
{
long i;
CHAR szaTmp[MAX_URL_STRING];
ASSERT(_grfMode == STGM_WRITE);
// we need to thunk since no RegXxxValueW on win95
SHTCharToAnsi(pszName, szaTmp, ARRAYSIZE(szaTmp));
ASSERT(!IsREG_XX_SZ(dwType));
i = RegSetValueExA(_hkey, szaTmp, NULL, dwType, pbData, cbData);
return (i == ERROR_SUCCESS) ? S_OK : E_FAIL;
}
HRESULT CEMDBLog::DeleteValue(LPCTSTR pszName)
{
long i;
ASSERT(_grfMode == STGM_WRITE);
i = SHDeleteValue(_hkey, NULL, pszName);
return (i == ERROR_SUCCESS) ? S_OK : E_FAIL;
}
HRESULT CEMDBLog::RmDir(LPCTSTR pszName, BOOL fRecurse)
{
HRESULT hr = E_FAIL;
DWORD i;
CHAR szaTmp[MAX_URL_STRING];
ASSERT(fRecurse); // others NYI
ASSERT(_grfMode == STGM_WRITE);
SHTCharToAnsi(pszName, szaTmp, ARRAYSIZE(szaTmp));
if (fRecurse) {
i = SHDeleteKeyA(_hkey, szaTmp);
}
else {
// not sure what to do, since we want a non-recursive delete
// but we do want to handle presence of values (which shlwapi
// doesn't support)
//i = DeleteEmptyKey(_hkey, pszName);
i = -1;
}
return (i == ERROR_SUCCESS) ? S_OK : E_FAIL;
}
//*** THIS::Count -- increment profile count for command
// ENTRY/EXIT
// fUpdate FALSE for the GC case (since can't update reg during RegEnum)
// NOTES
HRESULT CEMDBLog::GetCount(LPCTSTR pszCmd)
{
return _GetCountRW(pszCmd, TRUE);
}
// Returns the Filetime that is encoded in the Count Object.
// note: we do a delayed upgrade of the binary stream in the registry. We will
// use the old uem count info, but tack on the new filetime information when we increment the useage.
FILETIME CEMDBLog::GetFileTime(LPCTSTR pszCmd)
{
NRWINFO rwi;
HRESULT hres;
CUACount aCnt;
rwi.self = this;
rwi.pszName = pszCmd;
// This is a bizzar way of reading a string from the registry....
hres = aCnt.LoadFrom(&s_Nrw3Info, &rwi);
return aCnt.GetFileTime();
}
HRESULT CEMDBLog::_GetCountRW(LPCTSTR pszCmd, BOOL fUpdate)
{
HRESULT hr;
CUACount aCnt;
NRWINFO rwi;
int i;
hr = _GetCountWithDefault(pszCmd, TRUE, &aCnt);
i = aCnt.GetCount();
if (fUpdate) {
rwi.self = this;
rwi.pszName = pszCmd;
hr = aCnt.SaveTo(FALSE, &s_Nrw3Info, &rwi);
}
return i;
}
//***
// ENTRY/EXIT
// hr (ret) S_OK if dead, o.w. != S_OK
HRESULT CEMDBLog::IsDead(LPCTSTR pszCmd)
{
HRESULT hr;
hr = _GetCountRW(pszCmd, FALSE);
return hr;
}
extern DWORD g_dCleanSess;
//***
// NOTES
// we need to be careful not to party on guys that either aren't counts
// (e.g. UEME_CTLSESSION), or are 'special' (e.g. UEME_CTLCUACOUNT), or
// shouldn't be deleted (e.g. "del.xxx"). for now we take a conservative
// approach and just nuke things w/ UEME_RUN* as a prefix. better might
// be to use a dope vector and delete anything that's marked as 'cleanup'.
HRESULT CEMDBLog::GarbageCollect(BOOL fForce)
{
int i;
if (!fForce) {
if (g_dCleanSess != 0) {
i = GetSessionId();
if ((i % g_dCleanSess) != 0) {
TraceMsg(DM_UEMTRACE, "uadb.gc: skip");
return S_FALSE;
}
}
}
g_fDidUAGC = 1; // breadcrumbs in case we die (even non-DEBUG)
// do _GarbageCollectSlow(), in the background
HRESULT hr = E_FAIL;
CGCTask *pTask = CGCTask_Create(this);
if (pTask) {
IShellTaskScheduler *pSched;
hr = CoCreateInstance(CLSID_SharedTaskScheduler, NULL, CLSCTX_INPROC_SERVER, IID_IShellTaskScheduler, (void**)&pSched);
if (SUCCEEDED(hr)) {
hr = pSched->AddTask(pTask, CLSID_GCTaskTOID, 0L, ITSAT_DEFAULT_PRIORITY);
pSched->Release(); // (o.k. even if task hasn't completed)
}
pTask->Release();
}
return hr;
}
HRESULT CEMDBLog::_GarbageCollectSlow()
{
HKEY hk;
int i;
DWORD dwI, dwCch, dwType;
HDSA hdsa;
TCHAR *p;
TCHAR szKey[MAXIMUM_SUB_KEY_LENGTH];
TraceMsg(DM_UEMTRACE, "uadb.gc: hit");
hdsa = DSA_Create(SIZEOF(szKey), 4); // max size, oh well...
if (hdsa) {
TCHAR szRun[SIZEOF(SZ_RUN_PREFIX)];
TCHAR *pszRun;
pszRun = _MayEncrypt(SZ_RUN_PREFIX, szRun, ARRAYSIZE(szRun));
if (pszRun != szRun)
lstrcpy(szRun, pszRun);
ASSERT(lstrlen(szRun) == lstrlen(SZ_RUN_PREFIX));
hk = GetHkey();
for (dwI = 0; ; dwI++) {
dwCch = ARRAYSIZE(szKey);
if (SHEnumValue(hk, dwI, szKey, &dwCch, &dwType, NULL, NULL) != NOERROR)
break;
if (StrCmpN(szKey, szRun, ARRAYSIZE(szRun) - 1) == 0) {
if (IsDead(szKey) == S_OK)
DSA_AppendItem(hdsa, szKey);
}
}
for (i = DSA_GetItemCount(hdsa) - 1; i > 0; i--) {
p = (TCHAR *)DSA_GetItemPtr(hdsa, i);
TraceMsg(DM_UEMTRACE, "uadb.gc: nuke %s", p);
GetCount(p); // decay to 0 will delete
}
DSA_Destroy(hdsa);
hdsa = NULL;
}
return S_OK;
}
HRESULT CEMDBLog::IncCount(LPCTSTR pszCmd)
{
HRESULT hr;
NRWINFO rwi;
TraceMsg(DM_UEMTRACE, "uemt: ic <%s>", pszCmd);
if (DB_NOLOG)
return E_FAIL;
#if 0 // ChDir is currently done at create time
hr = ChDir(SZ_COUNT);
#endif
CUACount aCnt;
hr = _GetCountWithDefault(pszCmd, TRUE, &aCnt);
aCnt.IncCount();
// Since we are incrementing the count,
// We should update the last execute time
aCnt.UpdateFileTime();
rwi.self = this;
rwi.pszName = pszCmd;
hr = aCnt.SaveTo(TRUE, &s_Nrw3Info, &rwi);
return hr;
}
HRESULT CEMDBLog::SetCount(LPCTSTR pszCmd, int cCnt)
{
HRESULT hr;
NRWINFO rwi;
TraceMsg(DM_UEMTRACE, "uemt: ic <%s>", pszCmd);
if (DB_NOLOG)
return E_FAIL;
CUACount aCnt;
// fDef=FALSE so don't create if doesn't exist
hr = _GetCountWithDefault(pszCmd, /*fDef=*/FALSE, &aCnt);
if (SUCCEEDED(hr)) { // don't want default...
aCnt.SetCount(cCnt);
rwi.self = this;
rwi.pszName = pszCmd;
hr = aCnt.SaveTo(TRUE, &s_Nrw3Info, &rwi);
}
return hr;
}
//***
// ENTRY/EXIT
// fDefault provide default if entry not found
// ret S_OK: found w/o default; S_FALSE: needed default; E_xxx: error
// NOTES
// calling w/ fDefault=FALSE can still return S_FALSE
HRESULT CEMDBLog::_GetCountWithDefault(LPCTSTR pszCmd, BOOL fDefault, CUACount *pCnt)
{
HRESULT hr, hrDef;
NRWINFO rwi;
rwi.self = this;
rwi.pszName = pszCmd;
hr = pCnt->LoadFrom(&s_Nrw3Info, &rwi);
hrDef = S_OK;
if (FAILED(hr)) {
hrDef = S_FALSE;
if (fDefault) {
rwi.pszName = SZ_CUACount_ctor;
hr = pCnt->LoadFrom(&s_Nrw3Info, &rwi);
// pCnt->Initialize happens below (possibly 2x)
if (FAILED(hr)) {
TraceMsg(DM_UEMTRACE, "uadb._gcwd: create ctor %s", SZ_CUACount_ctor);
hr = pCnt->Initialize(SAFECAST(this, IUASession *));
ASSERT(pCnt->_GetCount() == 0);
pCnt->_SetMru(SID_SNOWINIT); // start clock ticking...
// cnt=UAC_NEWCOUNT, age=Now
int i = _fNoDecay ? 1 : UAC_NEWCOUNT;
pCnt->SetCount(i); // force age
ASSERT(pCnt->_GetCount() == i);
hr = pCnt->SaveTo(/*fForce*/TRUE, &s_Nrw3Info, &rwi);
}
#if XXX_DELETE
pCnt->_SetFlags(UACF_INHERITED, UACF_INHERITED);
#endif
}
}
hr = pCnt->Initialize(SAFECAST(this, IUASession *));
if (SUCCEEDED(hr))
pCnt->_SetFlags(UAXF_XMASK, _SetFlags(0, 0) & UAXF_XMASK);
return SUCCEEDED(hr) ? hrDef : hr;
}
HRESULT CEMDBLog::SetFileTime(LPCTSTR pszCmd, const FILETIME *pft)
{
HRESULT hr;
NRWINFO rwi;
TraceMsg(DM_UEMTRACE, "uemt: sft <%s>", pszCmd);
if (DB_NOLOG)
return E_FAIL;
CUACount aCnt;
// fDef=FALSE so don't create if doesn't exist
hr = _GetCountWithDefault(pszCmd, /*fDef=*/FALSE, &aCnt);
if (SUCCEEDED(hr)) { // don't want default...
aCnt.SetFileTime(pft);
rwi.self = this;
rwi.pszName = pszCmd;
hr = aCnt.SaveTo(TRUE, &s_Nrw3Info, &rwi);
}
return hr;
}
#if XXX_DELETE
#define BTOM(b, m) ((b) ? (m) : 0)
DWORD CEMDBLog::_SetFlags(DWORD dwMask, DWORD dwFlags)
{
// standard guys
if (dwMask & UAXF_NOPURGE)
_fNoPurge = BOOLIFY(dwFlags & UAXF_NOPURGE);
if (dwMask & UAXF_BACKUP)
_fBackup = BOOLIFY(dwFlags & UAXF_BACKUP);
if (dwMask & UAXF_NOENCRYPT)
_fNoEncrypt = BOOLIFY(dwFlags & UAXF_NOENCRYPT);
if (dwMask & UAXF_NODECAY)
_fNoDecay = BOOLIFY(dwFlags & UAXF_NODECAY);
// my guys
// (none)
return 0 // n.b. see continuation line(s)!!!
| BTOM(_fNoPurge , UAXF_NOPURGE)
| BTOM(_fBackup , UAXF_BACKUP)
| BTOM(_fNoEncrypt, UAXF_NOENCRYPT)
| BTOM(_fNoDecay , UAXF_NODECAY)
;
}
#endif
#define ROT13(i) (((i) + 13) % 26)
#define XXX_HASH 0 // proto code for way-shorter regnames
#if !defined(DEBUG) && XXX_HASH
#pragma message("warning: XXX_HASH defined non-DEBUG")
#endif
//*** _MayEncrypt -- encrypt registry key/value name
// NOTES
TCHAR *CEMDBLog::_MayEncrypt(LPCTSTR pszSrcPlain, LPTSTR pszDstEnc, int cchDst)
{
TCHAR *pszName;
if (!_fNoEncrypt) {
#if XXX_HASH
DWORD dwHash;
HashData((BYTE*)pszSrcPlain, lstrlen(pszSrcPlain), (BYTE*)&dwHash, SIZEOF(dwHash));
pszName = pszDstEnc;
if (EVAL(cchDst >= (8 + 1)))
wsprintf(pszName, TEXT("%x"), dwHash);
else
pszName = (TCHAR *)pszSrcPlain;
#else
TCHAR ch;
// uh-oh, gotta figure out an intl-aware encryption scheme...
pszName = pszDstEnc;
pszDstEnc[--cchDst] = 0; // pre-terminate for overflow case
ch = -1;
while (cchDst-- > 0 && ch != 0) {
ch = *pszSrcPlain++;
if (TEXT('a') <= ch && ch <= TEXT('z'))
ch = TEXT('a') + ROT13(ch - TEXT('a'));
else if (TEXT('A') <= ch && ch <= TEXT('Z'))
ch = TEXT('A') + ROT13(ch - TEXT('A'));
else
;
*pszDstEnc++ = ch;
}
#endif
TraceMsg(DM_UEMTRACE, "uadb._me: plain=%s(enc=%s)", pszSrcPlain - (pszDstEnc - pszName), pszName);
}
else {
pszName = (TCHAR *)pszSrcPlain;
}
return pszName;
}
#if XXX_CACHE // {
//***
// ENTRY/EXIT
// op 0:read, 1:write, 2:delete
//
HRESULT CEMDBLog::CacheOp(CACHEOP op, void *pvBuf, DWORD cbBuf, PNRWINFO prwi)
{
static TCHAR * const pszNameTab[] = { SZ_CTLSESSION, SZ_CUACount_ctor, };
int i;
ASSERT(ARRAYSIZE(pszNameTab) == ARRAYSIZE(_rgCache));
for (i = 0; i < ARRAYSIZE(pszNameTab); i++)
{
if (lstrcmp(prwi->pszName, pszNameTab[i]) == 0)
{
TraceMsg(DM_PERF, "cedl.s_%c: this'=%x n=%s", TEXT("rwd")[op], prwi->self, prwi->pszName);
switch (op)
{
// Read from the cache
case CO_READ:
// Do we have a cached item?
if (_rgCache[i].pv)
{
// The cached buffer should be smaller than or equal to the
// passed buffer size, or we get a buffer overflow
ASSERT (_rgCache[i].cbSize <= cbBuf);
// Load the cache into the buffer. Note that the
// size requested may be larger than the size cached. This
// is due to upgrade senarios
memcpy(pvBuf, _rgCache[i].pv, _rgCache[i].cbSize);
return S_OK;
}
break;
// Write to the Cache
case CO_WRITE:
// Is the size different or not initialized?
// When we first allocate this spot, it's size is zero. The
// incomming buffer should be greater.
if (_rgCache[i].cbSize != cbBuf)
{
// The size is different or uninialized.
if (_rgCache[i].pv) // Free whatever we've got
{ // because we're getting a new one.
_rgCache[i].cbSize = 0; // Set the size to zero.
LocalFree(_rgCache[i].pv);
}
// Allocate a new buffer of the current size.
_rgCache[i].pv = LocalAlloc(LPTR, cbBuf);
}
// Were we successful in allocating a cache buffer?
if (_rgCache[i].pv)
{
// Yes, make the buffer size the same... Do this here incase the
// allocate fails.
_rgCache[i].cbSize = cbBuf;
memcpy(_rgCache[i].pv, pvBuf, _rgCache[i].cbSize);
return S_OK;
}
break;
case CO_DELETE: // delete
if (_rgCache[i].pv)
{
LocalFree(_rgCache[i].pv);
_rgCache[i].pv = NULL;
_rgCache[i].cbSize = 0;
}
return S_OK;
default:
ASSERT(0); // 'impossible'
break;
}
TraceMsg(DM_PERF, "cedl.s_%c: this'=%x n=%s cache miss", TEXT("rwd")[op], prwi->self, prwi->pszName);
break;
}
}
return S_FALSE;
}
#endif // }
HRESULT CEMDBLog::s_Read(void *pvBuf, DWORD cbBuf, PNRWINFO prwi)
{
HRESULT hr;
CEMDBLog *pdb = (CEMDBLog *)prwi->self;
TCHAR *pszName;
TCHAR szNameEnc[MAX_URL_STRING];
#if XXX_CACHE
if (pdb->CacheOp(CO_READ, pvBuf, cbBuf, prwi) == S_OK)
return S_OK;
#endif
pszName = pdb->_MayEncrypt(prwi->pszName, szNameEnc, ARRAYSIZE(szNameEnc));
hr = pdb->QueryValue(pszName, (BYTE *)pvBuf, &cbBuf);
#if XXX_CACHE
pdb->CacheOp(CO_WRITE, pvBuf, cbBuf, prwi);
#endif
return hr;
}
HRESULT CEMDBLog::s_Write(void *pvBuf, DWORD cbBuf, PNRWINFO prwi)
{
HRESULT hr;
CEMDBLog *pdb = (CEMDBLog *)prwi->self;
TCHAR *pszName;
TCHAR szNameEnc[MAX_URL_STRING];
#if XXX_CACHE
// CO_DELETE not CO_WRITE (easier/safer) (perf fine since rarely write)
pdb->CacheOp(CO_DELETE, pvBuf, cbBuf, prwi);
#endif
pszName = pdb->_MayEncrypt(prwi->pszName, szNameEnc, ARRAYSIZE(szNameEnc));
hr = pdb->SetValue(pszName, REG_BINARY, (BYTE *)pvBuf, cbBuf);
return hr;
}
HRESULT CEMDBLog::s_Delete(void *pvBuf, DWORD cbBuf, PNRWINFO prwi)
{
HRESULT hr;
CEMDBLog *pdb = (CEMDBLog *)prwi->self;
TCHAR *pszName;
TCHAR szNameEnc[MAX_URL_STRING];
#if XXX_CACHE
pdb->CacheOp(CO_DELETE, pvBuf, cbBuf, prwi);
#endif
pszName = pdb->_MayEncrypt(prwi->pszName, szNameEnc, ARRAYSIZE(szNameEnc));
if (pdb->_fBackup) {
TCHAR szDel[MAX_URL_STRING];
wnsprintf(szDel, ARRAYSIZE(szDel), SZ_DEL_PREFIX TEXT("%s"), pszName);
if (pvBuf == NULL) {
// happily we already have the data
// o.w. we'd need to QueryValue into a mega-buffer
TraceMsg(TF_WARNING, "uadb.s_d: _fBackup && !pvBuf (!)");
ASSERT(0);
}
if (pvBuf != NULL) {
hr = pdb->SetValue(szDel, REG_BINARY, (BYTE *)pvBuf, cbBuf);
if (FAILED(hr))
TraceMsg(TF_WARNING, "uadb.s_d: _fBackup hr=%x (!)", hr);
}
// (we'll do delete whether or not the _fBackup works)
}
hr = pdb->DeleteValue(pszName);
TraceMsg(DM_UEMTRACE, "uadb.s_d: delete s=%s(%s) (_fBackup=%d) pRaw=0x%x hr=%x", pszName, prwi->pszName, pdb->_fBackup, pvBuf, hr);
#if 1 // unneeded?
if (FAILED(hr))
hr = s_Write(pvBuf, cbBuf, prwi);
#endif
return hr;
}
// }
//*** THIS::IUASession::* {
int CEMDBLog::GetSessionId()
{
HRESULT hr;
NRWINFO rwi;
CUASession aSess;
int i;
rwi.self = this;
rwi.pszName = SZ_CTLSESSION;
hr = aSess.LoadFrom(&s_Nrw3Info, &rwi);
aSess.Initialize();
i = aSess.GetSessionId();
hr = aSess.SaveTo(FALSE, &s_Nrw3Info, &rwi);
return i;
}
void CEMDBLog::SetSession(UAQUANTUM uaq, BOOL fForce)
{
HRESULT hr;
NRWINFO rwi;
CUASession aSess;
rwi.self = this;
rwi.pszName = SZ_CTLSESSION;
hr = aSess.LoadFrom(&s_Nrw3Info, &rwi);
aSess.Initialize();
aSess.SetSession(uaq, fForce);
hr = aSess.SaveTo(TRUE, &s_Nrw3Info, &rwi);
return;
}
// }
//*** THIS::CUASession::* {
extern DWORD g_dSessTime;
CUASession::CUASession()
{
_fInited = FALSE;
_fDirty = FALSE;
return;
}
HRESULT CUASession::Initialize()
{
if (!_fInited) {
_fInited = TRUE;
_cCnt = 0;
_qtMru = 0;
_fDirty = TRUE;
}
return S_OK;
}
//*** THIS::GetSessionId -- increment profile count for command
//
int CUASession::GetSessionId()
{
return _cCnt;
}
//***
// ENTRY/EXIT
// fForce ignore threshhold rules (e.g. for DEBUG)
void CUASession::SetSession(UAQUANTUM uaq, BOOL fForce)
{
UATIME qtNow;
qtNow = GetUaTime(NULL);
if (qtNow - _qtMru >= g_dSessTime || fForce) {
TraceMsg(DM_UEMTRACE, "uadb.ss: sid=%d++", _cCnt);
_cCnt++;
// nt5:173090
// if we wrap, there's nothing we can do. it would be pretty
// bad, since everything would get promoted (since 'now' will
// be *older* than 'mru' so there will be no decay). worse still
// they'd stay promoted for a v. long time. we could detect that
// in the decay code and (lazily) reset the count to 'now,1' or
// somesuch, but it should never happen so we simply ASSERT.
ASSERT(_cCnt != 0); // 'impossible'
_qtMru = qtNow;
_fDirty = TRUE;
}
return;
}
HRESULT CUASession::LoadFrom(PFNNRW3 pfnIO, PNRWINFO pRwi)
{
HRESULT hr;
hr = (*pfnIO->_pfnRead)(_GetRawData(), _GetRawCount(), pRwi);
if (SUCCEEDED(hr))
_fInited = TRUE;
return hr;
}
HRESULT CUASession::SaveTo(BOOL fForce, PFNNRW3 pfnIO, PNRWINFO pRwi)
{
HRESULT hr;
hr = S_FALSE;
if (fForce || _fDirty) {
hr = (*pfnIO->_pfnWrite)(_GetRawData(), _GetRawCount(), pRwi);
_fDirty = FALSE;
}
return hr;
}
// }
//*** CGCTask::* {
CGCTask *CGCTask_Create(CEMDBLog *that)
{
CGCTask *pthis = new CGCTask;
if (pthis) {
if (FAILED(pthis->Initialize(that))) {
delete pthis;
pthis = NULL;
}
}
return pthis;
}
HRESULT CGCTask::Initialize(CEMDBLog *that)
{
ASSERT(!_that);
ASSERT(that);
that->AddRef();
_that = that;
return S_OK;
}
CGCTask::CGCTask() : CRunnableTask(RTF_DEFAULT)
{
}
CGCTask::~CGCTask()
{
if (_that)
_that->Release();
}
//*** CGCTask::CRunnableTaskRT::* {
HRESULT CGCTask::RunInitRT()
{
HRESULT hr;
ASSERT(_that);
g_fDidUAGC = 2; // breadcrumbs in case we die (even non-DEBUG)
hr = _that->_GarbageCollectSlow();
g_fDidUAGC = 3; // breadcrumbs in case we die (even non-DEBUG)
return hr;
}
// }
// }
#if 0
#ifdef DEBUG
void emdbtst()
{
HRESULT hr;
CEMDBLog *pdb = new CEMDBLog;
if (pdb)
{
hr = pdb->Initialize(HKEY_CURRENT_USER, TEXT("UIProf"));
ASSERT(SUCCEEDED(hr));
pdb->CountIncr("foo");
pdb->CountIncr("bar");
pdb->CountIncr("foo");
delete pdb;
}
return;
}
#endif
#endif
// }
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