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OLE.xs
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OLE.xs
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/* OLE.xs
*
* (c) 1995 Microsoft Corporation. All rights reserved.
* Developed by ActiveWare Internet Corp., now known as
* ActiveState Tool Corp., http://www.ActiveState.com
*
* Other modifications Copyright (c) 1997-1999 by Gurusamy Sarathy
* <gsar@ActiveState.com> and Jan Dubois <jand@ActiveState.com>
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
*
* File contents:
*
* - C helper routines
* - Package Win32::OLE Constructor and method invocation
* - Package Win32::OLE::Tie Implements properties as tied hash
* - Package Win32::OLE::Const Load application constants from type library
* - Package Win32::OLE::Enum OLE collection enumeration
* - Package Win32::OLE::Variant Implements Perl VARIANT objects
* - Package Win32::OLE::NLS National Language Support
* - Package Win32::OLE::TypeLib Type library access
* - Package Win32::OLE::TypeInfo Type info access
*
*/
#ifdef __GNUC__
# pragma GCC diagnostic ignored "-Wwrite-strings"
#endif
// #define _DEBUG
#define register /* be gone */
#define MY_VERSION "Win32::OLE(" XS_VERSION ")"
#include <math.h> /* this hack gets around VC-5.0 brainmelt */
#define _WIN32_DCOM
#include <windows.h>
#include <ocidl.h>
#ifdef _DEBUG
# include <crtdbg.h>
# define DEBUGBREAK _CrtDbgBreak()
#else
# define DEBUGBREAK
#endif
// MingW is missing these 2 macros
#ifndef V_RECORD
# ifdef NONAMELESSUNION
# define V_RECORDINFO(X) ((X)->__VARIANT_NAME_1.__VARIANT_NAME_2.__VARIANT_NAME_3.__VARIANT_NAME_4.pRecInfo)
# define V_RECORD(X) ((X)->__VARIANT_NAME_1.__VARIANT_NAME_2.__VARIANT_NAME_3.__VARIANT_NAME_4.pvRecord)
# else
# define V_RECORDINFO(X) ((X)->pRecInfo)
# define V_RECORD(X) ((X)->pvRecord)
# endif
#endif
extern "C" {
#ifndef GUIDKIND_DEFAULT_SOURCE_DISP_IID
# define GUIDKIND_DEFAULT_SOURCE_DISP_IID 1
#endif
#ifdef __CYGWIN__
# undef WIN32 /* don't use with Cygwin & Perl */
# include <netdb.h>
# include <sys/socket.h>
# include <unistd.h>
# ifndef strrev
# define strrev my_strrev
static char *
my_strrev(char *str)
{
char *left = str;
char *right = left + strlen(left) - 1;
while (left < right) {
char temp = *left;
*left++ = *right;
*right-- = temp;
}
return str;
}
# endif /* strrev */
# ifndef stricmp
# define stricmp strcasecmp
# endif /* stricmp */
#endif
#define PERL_NO_GET_CONTEXT
#define NO_XSLOCKS
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include "patchlevel.h"
#undef WORD
typedef unsigned short WORD;
#ifndef _WIN64
# define DWORD_PTR DWORD
#endif
#if PERL_VERSION < 6
# error Win32::OLE requires Perl 5.6.0 or later
#endif
#ifdef USE_5005THREADS
# error Win32::OLE is incompatible with 5.005 style threads
#endif
#if PERL_VERSION > 6
# ifndef NO_MATHOMS
# define my_utf8_to_uv(s) utf8_to_uvuni(s, NULL)
# else
/* this has risk of buffer overflow but too complicated to fix */
# define my_utf8_to_uv(s) utf8_to_uvchr_buf(s, s+5, NULL)
# endif
#else
# if PERL_SUBVERSION > 0
# define my_utf8_to_uv(s) utf8_to_uv_simple(s, NULL)
# else
# define my_utf8_to_uv(s) utf8_to_uv(s, NULL)
# endif
#endif
#ifndef _DEBUG
# define DBG(a)
#else
# define DBG(a) MyDebug a
void
MyDebug(const char *pat, ...)
{
DWORD thread = GetCurrentThreadId();
void *context = PERL_GET_CONTEXT;
char szBuffer[512];
char *szMessage = szBuffer + sprintf(szBuffer, "[%d:%p] ", thread, context);
va_list args;
va_start(args, pat);
vsprintf(szMessage, pat, args);
OutputDebugString(szBuffer);
va_end(args);
}
#endif
/* constants */
static const DWORD WINOLE_MAGIC = 0x12344321;
static const DWORD WINOLEENUM_MAGIC = 0x12344322;
static const DWORD WINOLEVARIANT_MAGIC = 0x12344323;
static const DWORD WINOLETYPELIB_MAGIC = 0x12344324;
static const DWORD WINOLETYPEINFO_MAGIC = 0x12344325;
static const LCID lcidSystemDefault = 2 << 10;
/* static const LCID lcidDefault = 0; language neutral */
static const LCID lcidDefault = lcidSystemDefault;
static const UINT cpDefault = CP_ACP;
static const BOOL varDefault = FALSE;
static char PERL_OLE_ID[] = "___Perl___OleObject___";
static const int PERL_OLE_IDLEN = sizeof(PERL_OLE_ID)-1;
static const int OLE_BUF_SIZ = 256;
/* class names */
static char szUNICODESTRING[] = "Unicode::String";
static char szWINOLE[] = "Win32::OLE";
static char szWINOLEENUM[] = "Win32::OLE::Enum";
static char szWINOLEVARIANT[] = "Win32::OLE::Variant";
static char szWINOLETIE[] = "Win32::OLE::Tie";
static char szWINOLETYPELIB[] = "Win32::OLE::TypeLib";
static char szWINOLETYPEINFO[] = "Win32::OLE::TypeInfo";
/* class variable names */
static char LCID_NAME[] = "LCID";
static const int LCID_LEN = sizeof(LCID_NAME)-1;
static char CP_NAME[] = "CP";
static const int CP_LEN = sizeof(CP_NAME)-1;
static char VAR_NAME[] = "Variant";
static const int VAR_LEN = sizeof(VAR_NAME)-1;
static char WARN_NAME[] = "Warn";
static const int WARN_LEN = sizeof(WARN_NAME)-1;
static char _NEWENUM_NAME[] = "_NewEnum";
static const int _NEWENUM_LEN = sizeof(_NEWENUM_NAME)-1;
static char _UNIQUE_NAME[] = "_Unique";
static const int _UNIQUE_LEN = sizeof(_UNIQUE_NAME)-1;
static char LASTERR_NAME[] = "LastError";
static const int LASTERR_LEN = sizeof(LASTERR_NAME)-1;
static char TIE_NAME[] = "Tie";
static const int TIE_LEN = sizeof(TIE_NAME)-1;
#define COINIT_OLEINITIALIZE -1
#define COINIT_NO_INITIALIZE -2
typedef HRESULT (STDAPICALLTYPE FNCOINITIALIZEEX)(LPVOID, DWORD);
typedef void (STDAPICALLTYPE FNCOUNINITIALIZE)(void);
typedef HRESULT (STDAPICALLTYPE FNCOCREATEINSTANCEEX)
(REFCLSID, IUnknown*, DWORD, COSERVERINFO*, DWORD, MULTI_QI*);
typedef HWND (WINAPI FNHTMLHELP)(HWND hwndCaller, LPCSTR pszFile,
UINT uCommand, DWORD dwData);
typedef struct _tagOBJECTHEADER OBJECTHEADER;
/* per interpreter variables */
typedef struct
{
CRITICAL_SECTION CriticalSection;
OBJECTHEADER *pObj;
BOOL bInitialized;
HV *hv_unique;
/* DCOM function addresses are resolved dynamically */
HINSTANCE hOLE32;
FNCOINITIALIZEEX *pfnCoInitializeEx;
FNCOUNINITIALIZE *pfnCoUninitialize;
FNCOCREATEINSTANCEEX *pfnCoCreateInstanceEx;
/* HTML Help Control loaded dynamically */
HINSTANCE hHHCTRL;
FNHTMLHELP *pfnHtmlHelp;
} PERINTERP;
#ifdef PERL_IMPLICIT_CONTEXT
# define dPERINTERP \
SV **pinterp = hv_fetch(PL_modglobal, MY_VERSION, \
sizeof(MY_VERSION)-1, FALSE); \
if (!pinterp || !*pinterp || !SvIOK(*pinterp)) \
warn(MY_VERSION ": Per-interpreter data not initialized"); \
PERINTERP *pInterp = INT2PTR(PERINTERP*, SvIV(*pinterp))
# define INTERP pInterp
#else
static PERINTERP Interp;
# define dPERINTERP extern int errno
# define INTERP (&Interp)
#endif
#define g_pObj (INTERP->pObj)
#define g_bInitialized (INTERP->bInitialized)
#define g_CriticalSection (INTERP->CriticalSection)
#define g_hv_unique (INTERP->hv_unique)
#define g_hOLE32 (INTERP->hOLE32)
#define g_pfnCoInitializeEx (INTERP->pfnCoInitializeEx)
#define g_pfnCoUninitialize (INTERP->pfnCoUninitialize)
#define g_pfnCoCreateInstanceEx (INTERP->pfnCoCreateInstanceEx)
#define g_hHHCTRL (INTERP->hHHCTRL)
#define g_pfnHtmlHelp (INTERP->pfnHtmlHelp)
/* common object header */
typedef struct _tagOBJECTHEADER
{
long lMagic;
OBJECTHEADER *pNext;
OBJECTHEADER *pPrevious;
#ifdef PERL_IMPLICIT_CONTEXT
PERINTERP *pInterp;
#endif
} OBJECTHEADER;
#define OBJFLAG_DESTROYED 0x01
#define OBJFLAG_UNIQUE 0x02
/* Win32::OLE object */
class EventSink;
typedef struct
{
OBJECTHEADER header;
UV flags;
IDispatch *pDispatch;
ITypeInfo *pTypeInfo;
IEnumVARIANT *pEnum;
EventSink *pEventSink;
HV *self;
HV *hashTable;
SV *destroy;
unsigned short cFuncs;
unsigned short cVars;
unsigned int PropIndex;
} WINOLEOBJECT;
/* Win32::OLE::Enum object */
typedef struct
{
OBJECTHEADER header;
IEnumVARIANT *pEnum;
} WINOLEENUMOBJECT;
/* Win32::OLE::Variant object */
typedef struct
{
OBJECTHEADER header;
VARIANT variant;
VARIANT byref;
} WINOLEVARIANTOBJECT;
/* Win32::OLE::TypeLib object */
typedef struct
{
OBJECTHEADER header;
ITypeLib *pTypeLib;
TLIBATTR *pTLibAttr;
} WINOLETYPELIBOBJECT;
/* Win32::OLE::TypeInfo object */
typedef struct
{
OBJECTHEADER header;
ITypeInfo *pTypeInfo;
TYPEATTR *pTypeAttr;
} WINOLETYPEINFOOBJECT;
/* EventSink class */
class EventSink : public IDispatch
{
public:
// IUnknown methods
STDMETHOD(QueryInterface)(REFIID riid, LPVOID *ppvObj);
STDMETHOD_(ULONG, AddRef)(void);
STDMETHOD_(ULONG, Release)(void);
// IDispatch methods
STDMETHOD(GetTypeInfoCount)(UINT *pctinfo);
STDMETHOD(GetTypeInfo)(
UINT itinfo,
LCID lcid,
ITypeInfo **pptinfo);
STDMETHOD(GetIDsOfNames)(
REFIID riid,
OLECHAR **rgszNames,
UINT cNames,
LCID lcid,
DISPID *rgdispid);
STDMETHOD(Invoke)(
DISPID dispidMember,
REFIID riid,
LCID lcid,
WORD wFlags,
DISPPARAMS *pdispparams,
VARIANT *pvarResult,
EXCEPINFO *pexcepinfo,
UINT *puArgErr);
EventSink(pTHX_ WINOLEOBJECT *pObj, SV *events,
REFIID riid, ITypeInfo *pTypeInfo);
~EventSink(void);
HRESULT Advise(IConnectionPoint *pConnectionPoint);
void Unadvise(void);
private:
int m_refcount;
WINOLEOBJECT *m_pObj;
IConnectionPoint *m_pConnectionPoint;
DWORD m_dwCookie;
SV *m_events;
IID m_iid;
ITypeInfo *m_pTypeInfo;
#ifdef PERL_IMPLICIT_CONTEXT
pTHX;
#endif
};
/* Forwarder class */
class Forwarder : public IDispatch
{
public:
// IUnknown methods
STDMETHOD(QueryInterface)(REFIID riid, LPVOID *ppvObj);
STDMETHOD_(ULONG, AddRef)(void);
STDMETHOD_(ULONG, Release)(void);
// IDispatch methods
STDMETHOD(GetTypeInfoCount)(UINT *pctinfo);
STDMETHOD(GetTypeInfo)(
UINT itinfo,
LCID lcid,
ITypeInfo **pptinfo);
STDMETHOD(GetIDsOfNames)(
REFIID riid,
OLECHAR **rgszNames,
UINT cNames,
LCID lcid,
DISPID *rgdispid);
STDMETHOD(Invoke)(
DISPID dispidMember,
REFIID riid,
LCID lcid,
WORD wFlags,
DISPPARAMS *pdispparams,
VARIANT *pvarResult,
EXCEPINFO *pexcepinfo,
UINT *puArgErr);
Forwarder(pTHX_ HV *stash, SV *method);
~Forwarder(void);
private:
int m_refcount;
HV *m_stash;
SV *m_method;
#ifdef PERL_IMPLICIT_CONTEXT
pTHX;
#endif
};
/* forward declarations */
HRESULT SetSVFromVariantEx(pTHX_ VARIANTARG *pVariant, SV* sv, HV *stash,
BOOL bByRefObj=FALSE);
HRESULT SetVariantFromSVEx(pTHX_ SV* sv, VARIANT *pVariant, UINT cp,
LCID lcid);
HRESULT AssignVariantFromSV(pTHX_ SV* sv, VARIANT *pVariant,
UINT cp, LCID lcid);
//------------------------------------------------------------------------
void
MagicGet(pTHX_ SV *sv)
{
if (SvGMAGICAL(sv)) {
mg_get(sv);
// If the sv has lvalue magic (e.g. substr), it will stay magical
// and mg_get() will *not* set the public flags. We try to work
// around this here for at least the "substr" and "vec" cases.
//
// Setting the public POK flag should be safe because this function
// is only called on function arguments, which will be discarded
// once the function returns.
if (SvGMAGICAL(sv) && SvPOKp(sv))
SvPOK_on(sv);
}
}
inline void
SpinMessageLoop(void)
{
MSG msg;
DBG(("SpinMessageLoop\n"));
while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
} /* SpinMessageLoop */
BOOL
IsLocalMachine(pTHX_ SV *host)
{
char szComputerName[MAX_COMPUTERNAME_LENGTH+1];
DWORD dwSize = sizeof(szComputerName);
char *pszMachine = SvPV_nolen(host);
char *pszName = pszMachine;
while (*pszName == '\\')
++pszName;
if (*pszName == '\0')
return TRUE;
/* Check against local computer name (from registry) */
if (GetComputerNameA(szComputerName, &dwSize)
&& stricmp(pszName, szComputerName) == 0)
{
return TRUE;
}
/* gethostname(), gethostbyname() and inet_addr() all call proxy functions
* in the Perl socket layer wrapper in win32sck.c. Therefore calling
* WSAStartup() here is not necessary.
*/
/* Determine main host name of local machine */
char szBuffer[200];
if (gethostname(szBuffer, sizeof(szBuffer)) != 0)
return FALSE;
/* Copy list of addresses for local machine */
struct hostent *pHostEnt = gethostbyname(szBuffer);
if (!pHostEnt)
return FALSE;
if (pHostEnt->h_addrtype != PF_INET || pHostEnt->h_length != 4) {
warn(MY_VERSION ": IsLocalMachine() gethostbyname failure");
return FALSE;
}
int index;
int count = 0;
char *pLocal;
while (pHostEnt->h_addr_list[count])
++count;
New(0, pLocal, 4*count, char);
for (index = 0; index < count; ++index)
memcpy(pLocal+4*index, pHostEnt->h_addr_list[index], 4);
/* Determine addresses of remote machine */
unsigned long ulRemoteAddr;
char *pRemote[2] = {NULL, NULL};
char **ppRemote = &pRemote[0];
if (isdigit(*pszMachine)) {
/* Convert numeric dotted address */
ulRemoteAddr = inet_addr(pszMachine);
if (ulRemoteAddr != INADDR_NONE)
pRemote[0] = (char*)&ulRemoteAddr;
}
else {
/* Lookup addresses for remote host name */
pHostEnt = gethostbyname(pszMachine);
if (pHostEnt)
if (pHostEnt->h_addrtype == PF_INET && pHostEnt->h_length == 4)
ppRemote = pHostEnt->h_addr_list;
}
/* Compare list of addresses of remote machine against local addresses */
while (*ppRemote) {
for (index = 0; index < count; ++index)
if (memcmp(pLocal+4*index, *ppRemote, 4) == 0) {
Safefree(pLocal);
return TRUE;
}
++ppRemote;
}
Safefree(pLocal);
return FALSE;
} /* IsLocalMachine */
HRESULT
CLSIDFromRemoteRegistry(pTHX_ SV *host, SV *progid, CLSID *pCLSID)
{
HKEY hKeyLocalMachine;
HKEY hKeyProgID;
LONG err;
HRESULT hr = S_OK;
err = RegConnectRegistryA(SvPV_nolen(host), HKEY_LOCAL_MACHINE, &hKeyLocalMachine);
if (err != ERROR_SUCCESS)
return HRESULT_FROM_WIN32(err);
SV *subkey = sv_2mortal(newSVpv("SOFTWARE\\Classes\\", 0));
sv_catsv(subkey, progid);
sv_catpv(subkey, "\\CLSID");
err = RegOpenKeyExA(hKeyLocalMachine, SvPV_nolen(subkey), 0, KEY_READ,
&hKeyProgID);
if (err != ERROR_SUCCESS)
hr = HRESULT_FROM_WIN32(err);
else {
DWORD dwType;
char szCLSID[100];
DWORD dwLength = sizeof(szCLSID);
err = RegQueryValueEx(hKeyProgID, "", NULL, &dwType,
(unsigned char*)&szCLSID, &dwLength);
if (err != ERROR_SUCCESS)
hr = HRESULT_FROM_WIN32(err);
else if (dwType == REG_SZ) {
OLECHAR wszCLSID[sizeof(szCLSID)];
MultiByteToWideChar(CP_ACP, 0, szCLSID, -1,
wszCLSID, sizeof(szCLSID));
hr = CLSIDFromString(wszCLSID, pCLSID);
}
else /* XXX maybe there is a more appropriate error code? */
hr = HRESULT_FROM_WIN32(ERROR_CANTREAD);
RegCloseKey(hKeyProgID);
}
RegCloseKey(hKeyLocalMachine);
return hr;
} /* CLSIDFromRemoteRegistry */
/* The following strategy is used to avoid the limitations of hardcoded
* buffer sizes: Conversion between wide char and multibyte strings
* is performed by GetMultiByte and GetWideChar respectively. The
* caller passes a default buffer and size. If the buffer is too small
* then the conversion routine allocates a new buffer that is big enough.
* The caller must free this buffer using the ReleaseBuffer function. */
inline void
ReleaseBuffer(pTHX_ void *pszHeap, void *pszStack)
{
if (pszHeap != pszStack && pszHeap)
Safefree(pszHeap);
}
char *
GetMultiByteEx(pTHX_ OLECHAR *wide, int *pcch, char *psz, int len, UINT cp)
{
int count;
if (psz) {
if (!wide || !*pcch) {
fail:
*psz = (char)0;
*pcch = 0;
return psz;
}
count = WideCharToMultiByte(cp, 0, wide, *pcch, psz, len, NULL, NULL);
if (count > 0)
goto succeed;
}
else if (!wide || !*pcch) {
Newz(0, psz, 1, char);
*pcch = 0;
return psz;
}
count = WideCharToMultiByte(cp, 0, wide, *pcch, NULL, 0, NULL, NULL);
if (count == 0) { /* should never happen */
warn(MY_VERSION ": GetMultiByte() failure: %lu", GetLastError());
DEBUGBREAK;
if (!psz)
New(0, psz, 1, char);
goto fail;
}
Newz(0, psz, count, char);
WideCharToMultiByte(cp, 0, wide, *pcch, psz, count, NULL, NULL);
succeed:
if (*pcch == -1)
*pcch = count - 1; /* because count includes the trailing '\0' */
else
*pcch = count;
return psz;
} /* GetMultiByteEx */
char *
GetMultiByte(pTHX_ OLECHAR *wide, char *psz, int len, UINT cp)
{
int cch = -1;
return GetMultiByteEx(aTHX_ wide, &cch, psz, len, cp);
}
SV *
sv_setbstr(pTHX_ SV *sv, BSTR bstr, UINT cp)
{
if (!bstr) {
if (sv)
sv_setpvn(sv, "", 0);
else
sv = newSVpvn("", 0);
return sv;
}
int len = WideCharToMultiByte(cp, 0, bstr, SysStringLen(bstr),
NULL, 0, NULL, NULL);
if (sv)
sv_grow(sv, len+1);
else
sv = newSV(len+1);
WideCharToMultiByte(cp, 0, bstr, SysStringLen(bstr),
SvPVX(sv), len, NULL, NULL);
SvPOK_on(sv);
SvPVX(sv)[len] = '\0';
SvCUR_set(sv, len);
if (cp == CP_UTF8) {
SvUTF8_on(sv);
sv_utf8_downgrade(sv, TRUE);
}
return sv;
}
OLECHAR *
GetWideChar(pTHX_ SV *sv, OLECHAR *wide, int len, UINT cp)
{
/* Note: len is number of OLECHARs, not bytes! */
int count;
STRLEN strlen;
char *str = NULL;
if (sv) {
str = SvPV(sv, strlen);
++strlen; // include trailing '\0' character
if (cp == CP_UTF8 && !SvUTF8(sv))
cp = CP_ACP;
}
if (wide) {
if (!str) {
*wide = (OLECHAR) 0;
return wide;
}
count = MultiByteToWideChar(cp, 0, str, (int)strlen, wide, len);
if (count > 0)
return wide;
}
else if (!str) {
Newz(0, wide, 1, OLECHAR);
return wide;
}
count = MultiByteToWideChar(cp, 0, str, (int)strlen, NULL, 0);
if (count == 0) {
warn(MY_VERSION ": GetWideChar() failure: %lu", GetLastError());
DEBUGBREAK;
if (!wide)
New(0, wide, 1, OLECHAR);
*wide = (OLECHAR) 0;
return wide;
}
Newz(0, wide, count, OLECHAR);
MultiByteToWideChar(cp, 0, str, (int)strlen, wide, count);
return wide;
} /* GetWideChar */
HV *
GetStash(pTHX_ SV *sv)
{
if (sv_isobject(sv))
return SvSTASH(SvRV(sv));
else if (SvPOK(sv))
return gv_stashsv(sv, TRUE);
else
return (HV*)&PL_sv_undef;
} /* GetStash */
HV *
GetWin32OleStash(pTHX_ SV *sv)
{
SV *pkg;
if (sv_isobject(sv))
pkg = newSVpv(HvNAME(SvSTASH(SvRV(sv))), 0);
else if (SvPOK(sv))
pkg = newSVpv(SvPVX(sv), SvCUR(sv));
else
pkg = newSVpv(szWINOLE, 0); /* should never happen */
char *pszColon = strrchr(SvPVX(pkg), ':');
if (pszColon) {
--pszColon;
while (pszColon > SvPVX(pkg) && *pszColon == ':')
--pszColon;
SvCUR_set(pkg, pszColon - SvPVX(pkg) + 1);
SvPVX(pkg)[SvCUR(pkg)] = '\0';
}
HV *stash = gv_stashsv(pkg, TRUE);
SvREFCNT_dec(pkg);
return stash;
} /* GetWin32OleStash */
IV
QueryPkgVar(pTHX_ HV *stash, char *var, STRLEN len, IV def=0)
{
SV *sv;
GV **gv = (GV**)hv_fetch(stash, var, (I32)len, FALSE);
if (gv && (sv = GvSV(*gv)) != NULL && SvIOK(sv)) {
DBG(("QueryPkgVar(%s::%s) returns %d\n", HvNAME(stash), var, SvIV(sv)));
return SvIV(sv);
}
DBG(("QueryPkgVar(%s::%s) default %d\n", HvNAME(stash), var, def));
return def;
}
void
SetLastOleError(pTHX_ HV *stash, HRESULT hr=S_OK, char *pszMsg=NULL)
{
/* Find $Win32::OLE::LastError */
SV *sv = sv_2mortal(newSVpv(HvNAME(stash), 0));
sv_catpvn(sv, "::", 2);
sv_catpvn(sv, LASTERR_NAME, LASTERR_LEN);
SV *lasterr = perl_get_sv(SvPV_nolen(sv), TRUE);
if (!lasterr) {
warn(MY_VERSION ": SetLastOleError: couldnot create variable %s",
LASTERR_NAME);
DEBUGBREAK;
return;
}
sv_setiv(lasterr, (IV)hr);
if (pszMsg) {
sv_setpv(lasterr, pszMsg);
SvIOK_on(lasterr);
}
}
void
ReportOleError(pTHX_ HV *stash, HRESULT hr, EXCEPINFO *pExcep=NULL,
SV *svAdd=NULL)
{
dSP;
SV *sv;
IV warnlvl = QueryPkgVar(aTHX_ stash, WARN_NAME, WARN_LEN);
GV **pgv = (GV**)hv_fetch(stash, WARN_NAME, WARN_LEN, FALSE);
CV *cv = Nullcv;
if (pgv && (sv = GvSV(*pgv)) && SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV)
cv = (CV*)sv;
sv = sv_2mortal(newSV(200));
SvPOK_on(sv);
/* start with exception info */
if (pExcep && (pExcep->bstrSource || pExcep->bstrDescription)) {
char szSource[80] = "<Unknown Source>";
char szDesc[200] = "<No description provided>";
char *pszSource = szSource;
char *pszDesc = szDesc;
UINT cp = (UINT)QueryPkgVar(aTHX_ stash, CP_NAME, CP_LEN, cpDefault);
if (pExcep->bstrSource)
pszSource = GetMultiByte(aTHX_ pExcep->bstrSource,
szSource, sizeof(szSource), cp);
if (pExcep->bstrDescription)
pszDesc = GetMultiByte(aTHX_ pExcep->bstrDescription,
szDesc, sizeof(szDesc), cp);
sv_setpvf(sv, "OLE exception from \"%s\":\n\n%s\n\n",
pszSource, pszDesc);
ReleaseBuffer(aTHX_ pszSource, szSource);
ReleaseBuffer(aTHX_ pszDesc, szDesc);
/* SysFreeString accepts NULL too */
SysFreeString(pExcep->bstrSource);
SysFreeString(pExcep->bstrDescription);
SysFreeString(pExcep->bstrHelpFile);
}
/* always include OLE error code */
sv_catpvf(sv, MY_VERSION " error 0x%08x", hr);
/* try to append ': "error text"' from message catalog */
char *pszMsgText;
DWORD dwCount;
dwCount = FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, hr, lcidSystemDefault,
(LPSTR)&pszMsgText, 0, NULL);
if (dwCount > 0) {
sv_catpv(sv, ": \"");
/* remove trailing dots and CRs/LFs from message */
while (dwCount > 0 &&
(pszMsgText[dwCount-1] < ' ' || pszMsgText[dwCount-1] == '.'))
pszMsgText[--dwCount] = '\0';
/* skip carriage returns in message text */
char *psz = pszMsgText;
char *pCR;
while ((pCR = strchr(psz, '\r')) != NULL) {
sv_catpvn(sv, psz, pCR-psz);
psz = pCR+1;
}
if (*psz != '\0')
sv_catpv(sv, psz);
sv_catpv(sv, "\"");
LocalFree(pszMsgText);
}
/* add additional error details */
if (svAdd) {
sv_catpv(sv, "\n ");
sv_catsv(sv, svAdd);
}
/* try to keep linelength of description below 80 chars. */
char *pLastBlank = NULL;
char *pch = SvPVX(sv);
int cch;
for (cch = 0; *pch; ++pch, ++cch) {
if (*pch == ' ') {
pLastBlank = pch;
}
else if (*pch == '\n') {
pLastBlank = pch;
cch = 0;
}
if (cch > 76 && pLastBlank) {
*pLastBlank = '\n';
cch = (int)(pch - pLastBlank);
}
}
SetLastOleError(aTHX_ stash, hr, SvPVX(sv));
DBG(("ReportOleError: hr=0x%08x warnlvl=%d\n%s", hr, warnlvl, SvPVX(sv)));
if (!cv && (warnlvl > 1 || (warnlvl == 1 && (PL_dowarn & G_WARN_ON)))) {
if (warnlvl < 3) {
cv = perl_get_cv("Carp::carp", FALSE);
if (!cv)
warn("%s", SvPVX(sv));
}
else {
cv = perl_get_cv("Carp::croak", FALSE);
if (!cv)
croak("%s", SvPVX(sv));
}
}
if (cv) {
ENTER;
SAVETMPS;
PUSHMARK(sp);
XPUSHs(sv);
PUTBACK;
perl_call_sv((SV*)cv, G_DISCARD|G_EVAL);
FREETMPS;
LEAVE;
if (SvTRUE(ERRSV)) {
#if defined(ACTIVEPERL_CHANGELIST) || (PERL_VERSION > 6 || PERL_SUBVERSION > 0)
if (sv_isobject(ERRSV))
croak(Nullch); /* rethrow exception */
else
croak("%s", SvPV_nolen(ERRSV));
#else
croak("%s", SvPV_nolen(ERRSV));
#endif
}
}
} /* ReportOleError */
inline BOOL
CheckOleError(pTHX_ HV *stash, HRESULT hr, EXCEPINFO *pExcep=NULL,
SV *svAdd=NULL)
{
if (FAILED(hr)) {
ReportOleError(aTHX_ stash, hr, pExcep, svAdd);
return TRUE;
}
return FALSE;
}
SV *
CheckDestroyFunction(pTHX_ SV *sv, char *szMethod)
{
/* undef */
if (!SvOK(sv))
return NULL;
/* method name or CODE ref */
if (SvPOK(sv) || (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV))
return sv;
warn("%s(): DESTROY must be a method name or a CODE reference", szMethod);
DEBUGBREAK;
return NULL;
}
void
AddToObjectChain(pTHX_ OBJECTHEADER *pHeader, long lMagic)
{
dPERINTERP;
DBG(("AddToObjectChain(0x%08x) lMagic=0x%08x", pHeader, lMagic));
EnterCriticalSection(&g_CriticalSection);
pHeader->lMagic = lMagic;
pHeader->pPrevious = NULL;
pHeader->pNext = g_pObj;
#ifdef PERL_IMPLICIT_CONTEXT
pHeader->pInterp = INTERP;
#endif
if (g_pObj)
g_pObj->pPrevious = pHeader;
g_pObj = pHeader;
LeaveCriticalSection(&g_CriticalSection);