clones/php-src
1
0
Fork 0
mirror of https://github.com/php/php-src.git synced 2024-09-23 02:47:26 +00:00
Code Issues Packages Projects Releases Wiki Activity
3b27b0f18b
php-src/sapi/activescript/scriptengine.cpp

1878 lines
51 KiB
C++
Raw Blame History

/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2004 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.0 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_0.txt. |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Wez Furlong <wez@thebrainroom.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
/* Implementation Notes:
*
* PHP stores scripting engine state in thread-local storage. That means
* that we need to create a dedicated thread per-engine so that a host can
* use more than one engine object per thread.
*
* There are some interesting synchronization issues: Anything to do with
* running script in the PHP/Zend engine must take place on the engine
* thread. Likewise, calling back to the host must take place on the base
* thread - the thread that set the script site.
* */
#define _WIN32_DCOM
#define ZEND_INCLUDE_FULL_WINDOWS_HEADERS
#include "php.h"
extern "C" {
#include "php_main.h"
#include "SAPI.h"
#include "zend.h"
#include "zend_execute.h"
#include "zend_compile.h"
#include "php_globals.h"
#include "php_variables.h"
#include "php_ini.h"
#include "php5activescript.h"
#include "ext/com_dotnet/php_com_dotnet.h"
#include "ext/com_dotnet/php_com_dotnet_internal.h"
}
#include "php_ticks.h"
#include "php5as_scriptengine.h"
#include "php5as_classfactory.h"
#include <objbase.h>
/* {{{ trace */
static inline void trace(char *fmt, ...)
{
va_list ap;
char buf[4096];
sprintf(buf, "T=%08x ", tsrm_thread_id());
OutputDebugString(buf);
va_start(ap, fmt);
vsnprintf(buf, sizeof(buf), fmt, ap);
OutputDebugString(buf);
va_end(ap);
}
/* }}} */
/* {{{ scriptstate_to_string */
static const char *scriptstate_to_string(SCRIPTSTATE ss)
{
switch(ss) {
case SCRIPTSTATE_UNINITIALIZED: return "SCRIPTSTATE_UNINITIALIZED";
case SCRIPTSTATE_INITIALIZED: return "SCRIPTSTATE_INITIALIZED";
case SCRIPTSTATE_STARTED: return "SCRIPTSTATE_STARTED";
case SCRIPTSTATE_CONNECTED: return "SCRIPTSTATE_CONNECTED";
case SCRIPTSTATE_DISCONNECTED: return "SCRIPTSTATE_DISCONNECTED";
case SCRIPTSTATE_CLOSED: return "SCRIPTSTATE_CLOSED";
default:
return "unknown";
}
}
/* }}} */
/* {{{ TWideString */
/* This class helps manipulate strings from OLE.
* It does not use emalloc, so it is better suited for passing pointers
* between threads. */
class TWideString {
public:
LPOLESTR m_ole;
char *m_ansi;
int m_ansi_strlen;
TWideString(LPOLESTR olestr) {
m_ole = olestr;
m_ansi = NULL;
}
TWideString(LPCOLESTR olestr) {
m_ole = (LPOLESTR)olestr;
m_ansi = NULL;
}
~TWideString() {
if (m_ansi) {
CoTaskMemFree(m_ansi);
}
m_ansi = NULL;
}
char *safe_ansi_string() {
char *ret = ansi_string();
if (ret == NULL)
return "<NULL>";
return ret;
}
int ansi_len(void) {
/* force conversion if it has not already occurred */
if (m_ansi == NULL)
ansi_string();
return m_ansi_strlen;
}
static BSTR bstr_from_ansi(char *ansi) {
OLECHAR *ole = NULL;
BSTR bstr = NULL;
int req = MultiByteToWideChar(CP_ACP, 0, ansi, -1, NULL, 0);
if (req) {
ole = (OLECHAR*)CoTaskMemAlloc((req + 1) * sizeof(OLECHAR));
if (ole) {
req = MultiByteToWideChar(CP_ACP, 0, ansi, -1, ole, req);
req--;
ole[req] = 0;
bstr = SysAllocString(ole);
CoTaskMemFree(ole);
}
}
return bstr;
}
char *ansi_string(void)
{
if (m_ansi)
return m_ansi;
if (m_ole == NULL)
return NULL;
int bufrequired = WideCharToMultiByte(CP_ACP, 0, m_ole, -1, NULL, 0, NULL, NULL);
if (bufrequired) {
m_ansi = (char*)CoTaskMemAlloc(bufrequired + 1);
if (m_ansi) {
m_ansi_strlen = WideCharToMultiByte(CP_ACP, 0, m_ole, -1, m_ansi, bufrequired + 1, NULL, NULL);
if (m_ansi_strlen) {
m_ansi_strlen--;
m_ansi[m_ansi_strlen] = 0;
} else {
trace("conversion failed with return code %08x\n", GetLastError());
}
}
}
return m_ansi;
}
};
/* }}} */
/* {{{ code fragment structures */
enum fragtype {
FRAG_MAIN,
FRAG_SCRIPTLET,
FRAG_PROCEDURE
};
typedef struct {
enum fragtype fragtype;
zend_op_array *opcodes;
char *code;
int persistent; /* should be retained for Clone */
int executed; /* for "main" */
char *functionname;
unsigned int codelen;
unsigned int starting_line;
TPHPScriptingEngine *engine;
void *ptr;
} code_frag;
#define FRAG_CREATE_FUNC (char*)-1
static code_frag *compile_code_fragment(
enum fragtype fragtype,
char *functionname,
LPCOLESTR code,
ULONG starting_line,
EXCEPINFO *excepinfo,
TPHPScriptingEngine *engine
TSRMLS_DC);
static int execute_code_fragment(code_frag *frag,
VARIANT *varResult,
EXCEPINFO *excepinfo
TSRMLS_DC);
static void free_code_fragment(code_frag *frag TSRMLS_DC);
static code_frag *clone_code_fragment(code_frag *frag, TPHPScriptingEngine *engine TSRMLS_DC);
/* }}} */
/* Magic for handling threading correctly */
static inline HRESULT SEND_THREAD_MESSAGE(TPHPScriptingEngine *engine, LONG msg, WPARAM wparam, LPARAM lparam TSRMLS_DC)
{
if (engine->m_enginethread == 0)
return E_UNEXPECTED;
if (tsrm_thread_id() == (engine)->m_enginethread)
return (engine)->engine_thread_handler((msg), (wparam), (lparam), NULL TSRMLS_CC);
return (engine)->SendThreadMessage((msg), (wparam), (lparam));
}
/* These functions do some magic so that interfaces can be
* used across threads without worrying about marshalling
* or not marshalling, as appropriate.
* Win95 without DCOM 1.1, and NT SP 2 or lower do not have
* the GIT; so we emulate the GIT using other means.
* If you trace problems back to this code, installing the relevant
* SP should solve them.
* */
static inline HRESULT GIT_get(DWORD cookie, REFIID riid, void **obj)
{
IGlobalInterfaceTable *git;
HRESULT ret;
if (SUCCEEDED(CoCreateInstance(CLSID_StdGlobalInterfaceTable, NULL,
CLSCTX_INPROC_SERVER, IID_IGlobalInterfaceTable,
(void**)&git))) {
ret = git->GetInterfaceFromGlobal(cookie, riid, obj);
git->Release();
return ret;
}
return CoGetInterfaceAndReleaseStream((LPSTREAM)cookie, riid, obj);
}
static inline HRESULT GIT_put(IUnknown *unk, REFIID riid, DWORD *cookie)
{
IGlobalInterfaceTable *git;
HRESULT ret;
if (SUCCEEDED(CoCreateInstance(CLSID_StdGlobalInterfaceTable, NULL,
CLSCTX_INPROC_SERVER, IID_IGlobalInterfaceTable,
(void**)&git))) {
ret = git->RegisterInterfaceInGlobal(unk, riid, cookie);
git->Release();
return ret;
}
return CoMarshalInterThreadInterfaceInStream(riid, unk, (LPSTREAM*)cookie);
}
static inline HRESULT GIT_revoke(DWORD cookie, IUnknown *unk)
{
IGlobalInterfaceTable *git;
HRESULT ret;
if (SUCCEEDED(CoCreateInstance(CLSID_StdGlobalInterfaceTable, NULL,
CLSCTX_INPROC_SERVER, IID_IGlobalInterfaceTable,
(void**)&git))) {
ret = git->RevokeInterfaceFromGlobal(cookie);
git->Release();
}
/* Kill remote clients */
return CoDisconnectObject(unk, 0);
}
/* {{{ A generic stupid IDispatch implementation */
class IDispatchImpl:
public IDispatch
{
protected:
volatile LONG m_refcount;
public:
/* IUnknown */
STDMETHODIMP QueryInterface(REFIID iid, void **ppvObject) {
*ppvObject = NULL;
if (IsEqualGUID(IID_IDispatch, iid)) {
*ppvObject = (IDispatch*)this;
} else if (IsEqualGUID(IID_IUnknown, iid)) {
*ppvObject = this;
}
if (*ppvObject) {
AddRef();
return S_OK;
}
return E_NOINTERFACE;
}
STDMETHODIMP_(DWORD) AddRef(void) {
return InterlockedIncrement(const_cast<long*> (&m_refcount));
}
STDMETHODIMP_(DWORD) Release(void) {
DWORD ret = InterlockedDecrement(const_cast<long*> (&m_refcount));
trace("%08x: IDispatchImpl: release ref count is now %d\n", this, ret);
if (ret == 0)
delete this;
return ret;
}
/* IDispatch */
STDMETHODIMP GetTypeInfoCount(unsigned int * pctinfo) {
*pctinfo = 0;
trace("%08x: IDispatchImpl: GetTypeInfoCount\n", this);
return S_OK;
}
STDMETHODIMP GetTypeInfo( unsigned int iTInfo, LCID lcid, ITypeInfo **ppTInfo) {
trace("%08x: IDispatchImpl: GetTypeInfo\n", this);
return DISP_E_BADINDEX;
}
STDMETHODIMP GetIDsOfNames( REFIID riid, OLECHAR **rgszNames, unsigned int cNames, LCID lcid, DISPID *rgDispId)
{
unsigned int i;
trace("%08x: IDispatchImpl: GetIDsOfNames: \n", this);
for (i = 0; i < cNames; i++) {
TWideString name(rgszNames[i]);
trace(" %s\n", name.ansi_string());
}
trace("----\n");
return DISP_E_UNKNOWNNAME;
}
STDMETHODIMP Invoke( DISPID dispIdMember, REFIID riid, LCID lcid, WORD wFlags,
DISPPARAMS FAR* pDispParams, VARIANT FAR* pVarResult, EXCEPINFO FAR* pExcepInfo,
unsigned int FAR* puArgErr)
{
trace("%08x: IDispatchImpl: Invoke dispid %08x\n", this, dispIdMember);
return S_OK;
}
IDispatchImpl() {
m_refcount = 1;
}
virtual ~IDispatchImpl() {
}
};
/* }}} */
/* {{{ This object represents the PHP engine to the scripting host.
* Although the docs say it's implementation is optional, I found that
* the Windows Script host would crash if we did not provide it. */
class ScriptDispatch:
public IDispatchImpl
{
public:
ScriptDispatch() {
m_refcount = 1;
}
};
/* }}} */
/* {{{ This object is used in conjunction with IActiveScriptParseProcedure to
* allow scriptlets to be bound to events. IE uses this for declaring
* event handlers such as onclick="...".
* The compiled code is stored in this object; IE will call
* IDispatch::Invoke when the element is clicked.
* */
class ScriptProcedureDispatch:
public IDispatchImpl
{
public:
code_frag *m_frag;
DWORD m_procflags;
TPHPScriptingEngine *m_engine;
DWORD m_gitcookie;
STDMETHODIMP Invoke( DISPID dispIdMember, REFIID riid, LCID lcid, WORD wFlags,
DISPPARAMS FAR* pDispParams, VARIANT FAR* pVarResult, EXCEPINFO FAR* pExcepInfo,
unsigned int FAR* puArgErr)
{
TSRMLS_FETCH();
if (m_frag) {
trace("%08x: Procedure Dispatch: Invoke dispid %08x\n", this, dispIdMember);
SEND_THREAD_MESSAGE(m_engine, PHPSE_EXEC_PROC, 0, (LPARAM)this TSRMLS_CC);
}
return S_OK;
}
ScriptProcedureDispatch() {
m_refcount = 1;
GIT_put((IDispatch*)this, IID_IDispatch, &m_gitcookie);
}
};
/* }}} */
/* {{{ code fragment management */
static code_frag *compile_code_fragment(
enum fragtype fragtype,
char *functionname,
LPCOLESTR code,
ULONG starting_line,
EXCEPINFO *excepinfo,
TPHPScriptingEngine *engine
TSRMLS_DC)
{
zval pv;
int code_offs = 0;
char namebuf[256];
code_frag *frag = (code_frag*)CoTaskMemAlloc(sizeof(code_frag));
memset(frag, 0, sizeof(code_frag));
frag->engine = engine;
/* handle the function name */
if (functionname) {
int namelen;
if (functionname == FRAG_CREATE_FUNC) {
ULONG n = ++engine->m_lambda_count;
sprintf(namebuf, "__frag_%08x_%u", engine, n);
functionname = namebuf;
}
namelen = strlen(functionname);
code_offs = namelen + sizeof("function (){");
frag->functionname = (char*)CoTaskMemAlloc((namelen + 1) * sizeof(char));
memcpy(frag->functionname, functionname, namelen+1);
}
frag->functionname = functionname;
trace("%08x: COMPILED FRAG\n", frag);
frag->codelen = WideCharToMultiByte(CP_ACP, 0, code, -1, NULL, 0, NULL, NULL);
frag->code = (char*)CoTaskMemAlloc(sizeof(char) * (frag->codelen + code_offs + 1));
if (functionname) {
sprintf(frag->code, "function %s(){ ", functionname);
}
frag->codelen = WideCharToMultiByte(CP_ACP, 0, code, -1, frag->code + code_offs, frag->codelen, NULL, NULL) - 1;
if (functionname) {
frag->codelen += code_offs + 1;
frag->code[frag->codelen-1] = '}';
frag->code[frag->codelen] = 0;
}
trace("code to compile is:\ncode_offs=%d func=%s\n%s\n", code_offs, functionname, frag->code);
frag->fragtype = fragtype;
frag->starting_line = starting_line;
pv.type = IS_STRING;
pv.value.str.val = frag->code;
pv.value.str.len = frag->codelen;
frag->opcodes = compile_string(&pv, "fragment" TSRMLS_CC);
if (frag->opcodes == NULL) {
free_code_fragment(frag TSRMLS_CC);
if (excepinfo) {
memset(excepinfo, 0, sizeof(EXCEPINFO));
excepinfo->wCode = 1000;
excepinfo->bstrSource = TWideString::bstr_from_ansi("fragment");
excepinfo->bstrDescription = TWideString::bstr_from_ansi("Problem while parsing/compiling");
}
return NULL;
}
return frag;
}
static void free_code_fragment(code_frag *frag TSRMLS_DC)
{
switch(frag->fragtype) {
case FRAG_PROCEDURE:
if (frag->ptr) {
ScriptProcedureDispatch *disp = (ScriptProcedureDispatch*)frag->ptr;
disp->Release();
GIT_revoke(disp->m_gitcookie, (IDispatch*)disp);
frag->ptr = NULL;
}
break;
}
if (frag->opcodes)
destroy_op_array(frag->opcodes TSRMLS_CC);
if (frag->functionname)
CoTaskMemFree(frag->functionname);
CoTaskMemFree(frag->code);
CoTaskMemFree(frag);
}
static code_frag *clone_code_fragment(code_frag *frag, TPHPScriptingEngine *engine TSRMLS_DC)
{
zval pv;
code_frag *newfrag = (code_frag*)CoTaskMemAlloc(sizeof(code_frag));
memset(newfrag, 0, sizeof(code_frag));
newfrag->engine = engine;
trace("%08x: CLONED FRAG\n", newfrag);
newfrag->persistent = frag->persistent;
newfrag->codelen = frag->codelen;
newfrag->code = (char*)CoTaskMemAlloc(sizeof(char) * frag->codelen + 1);
memcpy(newfrag->code, frag->code, frag->codelen + 1);
if (frag->functionname) {
int namelen = strlen(frag->functionname);
newfrag->functionname = (char*)CoTaskMemAlloc(sizeof(char) * (namelen + 1));
memcpy(newfrag->functionname, frag->functionname, namelen+1);
} else {
newfrag->functionname = NULL;
}
newfrag->fragtype = frag->fragtype;
newfrag->starting_line = frag->starting_line;
pv.type = IS_STRING;
pv.value.str.val = newfrag->code;
pv.value.str.len = newfrag->codelen;
newfrag->opcodes = compile_string(&pv, "fragment" TSRMLS_CC);
if (newfrag->opcodes == NULL) {
free_code_fragment(newfrag TSRMLS_CC);
/*
if (excepinfo) {
memset(excepinfo, 0, sizeof(EXCEPINFO));
excepinfo->wCode = 1000;
excepinfo->bstrSource = TWideString::bstr_from_ansi("fragment");
excepinfo->bstrDescription = TWideString::bstr_from_ansi("Problem while parsing/compiling");
}
*/
return NULL;
}
return newfrag;
}
static int execute_code_fragment(code_frag *frag,
VARIANT *varResult,
EXCEPINFO *excepinfo
TSRMLS_DC)
{
zval *retval_ptr = NULL;
jmp_buf *orig_jmpbuf;
jmp_buf err_trap;
if (frag->fragtype == FRAG_MAIN && frag->executed)
return 1;
orig_jmpbuf = frag->engine->m_err_trap;
frag->engine->m_err_trap = &err_trap;
if (setjmp(err_trap) == 0) {
trace("*** Executing code in thread %08x\n", tsrm_thread_id());
if (frag->functionname) {
zval fname;
fname.type = IS_STRING;
fname.value.str.val = frag->functionname;
fname.value.str.len = strlen(frag->functionname);
call_user_function_ex(CG(function_table), NULL, &fname, &retval_ptr, 0, NULL, 1, NULL TSRMLS_CC);
} else {
zend_op_array *active_op_array = EG(active_op_array);
zend_function_state *function_state_ptr = EG(function_state_ptr);
zval **return_value_ptr_ptr = EG(return_value_ptr_ptr);
zend_op **opline_ptr = EG(opline_ptr);
EG(return_value_ptr_ptr) = &retval_ptr;
EG(active_op_array) = frag->opcodes;
EG(no_extensions) = 1;
zend_execute(frag->opcodes TSRMLS_CC);
EG(no_extensions) = 0;
EG(opline_ptr) = opline_ptr;
EG(active_op_array) = active_op_array;
EG(function_state_ptr) = function_state_ptr;
EG(return_value_ptr_ptr) = return_value_ptr_ptr;
}
} else {
trace("*** --> caught error while executing\n");
if (frag->engine->m_in_main)
frag->engine->m_stop_main = 1;
}
frag->engine->m_err_trap = orig_jmpbuf;
if (frag->fragtype == FRAG_MAIN)
frag->executed = 1;
if (varResult)
VariantInit(varResult);
if (retval_ptr) {
if (varResult)
php_com_variant_from_zval(varResult, retval_ptr, CP_ACP TSRMLS_CC);
zval_ptr_dtor(&retval_ptr);
}
return 1;
}
static void frag_dtor(void *pDest)
{
TSRMLS_FETCH();
code_frag *frag = *(code_frag**)pDest;
free_code_fragment(frag TSRMLS_CC);
}
/* }}} */
/* glue for getting back into the OO land */
static DWORD WINAPI begin_engine_thread(LPVOID param)
{
TPHPScriptingEngine *engine = (TPHPScriptingEngine*)param;
engine->engine_thread_func();
trace("engine thread has really gone away!\n");
return 0;
}
TPHPScriptingEngine::TPHPScriptingEngine()
{
m_scriptstate = SCRIPTSTATE_UNINITIALIZED;
m_pass = NULL;
m_in_main = 0;
m_stop_main = 0;
m_err_trap = NULL;
m_lambda_count = 0;
m_pass_eng = NULL;
m_refcount = 1;
m_basethread = tsrm_thread_id();
m_mutex = tsrm_mutex_alloc();
m_sync_thread_msg = CreateEvent(NULL, TRUE, FALSE, NULL);
TPHPClassFactory::AddToObjectCount();
m_engine_thread_handle = CreateThread(NULL, 0, begin_engine_thread, this, 0, &m_enginethread);
CloseHandle(m_engine_thread_handle);
}
void activescript_run_ticks(int count)
{
MSG msg;
TSRMLS_FETCH();
TPHPScriptingEngine *engine;
trace("ticking %d\n", count);
engine = (TPHPScriptingEngine*)SG(server_context);
/* PostThreadMessage(engine->m_enginethread, PHPSE_DUMMY_TICK, 0, 0); */
while(PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE)) {
if (msg.hwnd) {
PeekMessage(&msg, NULL, 0, 0, PM_REMOVE);
TranslateMessage(&msg);
DispatchMessage(&msg);
} else {
break;
}
}
}
/* Synchronize with the engine thread */
HRESULT TPHPScriptingEngine::SendThreadMessage(LONG msg, WPARAM wparam, LPARAM lparam)
{
HRESULT ret;
if (m_enginethread == 0)
return E_UNEXPECTED;
trace("I'm waiting for a mutex in SendThreadMessage\n this=%08x ethread=%08x msg=%08x\n",
this, m_enginethread, msg);
tsrm_mutex_lock(m_mutex);
ResetEvent(m_sync_thread_msg);
/* If we call PostThreadMessage before the thread has created the queue, the message
* posting fails. MSDN docs recommend the following course of action */
while (!PostThreadMessage(m_enginethread, msg, wparam, lparam)) {
Sleep(50);
if (m_enginethread == 0) {
tsrm_mutex_unlock(m_mutex);
trace("breaking out of dodgy busy wait\n");
return E_UNEXPECTED;
}
}
/* Wait for the event object to be signalled.
* This is a nice "blocking without blocking" wait; window messages are dispatched
* and everything works out quite nicely */
while(1) {
DWORD result = MsgWaitForMultipleObjects(1, &m_sync_thread_msg, FALSE, 4000, QS_ALLINPUT);
if (result == WAIT_OBJECT_0 + 1) {
/* Dispatch some messages */
MSG msg;
while(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
//trace("dispatching message while waiting\n");
TranslateMessage(&msg);
DispatchMessage(&msg);
}
} else if (result == WAIT_TIMEOUT) {
trace("timeout while waiting for thread reply\n");
} else {
/* the event was signalled */
break;
}
}
ret = m_sync_thread_ret;
ResetEvent(m_sync_thread_msg);
tsrm_mutex_unlock(m_mutex);
return ret;
}
TPHPScriptingEngine::~TPHPScriptingEngine()
{
trace("\n\n *** Engine Destructor Called\n\n");
if (m_scriptstate != SCRIPTSTATE_UNINITIALIZED && m_scriptstate != SCRIPTSTATE_CLOSED && m_enginethread)
Close();
PostThreadMessage(m_enginethread, WM_QUIT, 0, 0);
TPHPClassFactory::RemoveFromObjectCount();
tsrm_mutex_free(m_mutex);
}
/* Set some executor globals and execute a zend_op_array.
* The declaration looks wierd because this can be invoked from
* zend_hash_apply_with_argument */
static int execute_main(void *pDest, void *arg TSRMLS_DC)
{
code_frag *frag = *(code_frag**)pDest;
if (frag->fragtype == FRAG_MAIN && !(frag->engine->m_in_main && frag->engine->m_stop_main))
execute_code_fragment(frag, NULL, NULL TSRMLS_CC);
return ZEND_HASH_APPLY_KEEP;
}
static int clone_frags(void *pDest, void *arg TSRMLS_DC)
{
code_frag *frag, *src = *(code_frag**)pDest;
TPHPScriptingEngine *engine = (TPHPScriptingEngine*)arg;
if (src->persistent) {
frag = clone_code_fragment(src, engine TSRMLS_CC);
if (frag)
zend_hash_next_index_insert(&engine->m_frags, &frag, sizeof(code_frag*), NULL);
else
trace("WARNING: clone failed!\n");
}
return ZEND_HASH_APPLY_KEEP;
}
HRESULT TPHPScriptingEngine::engine_thread_handler(LONG msg, WPARAM wparam, LPARAM lParam, int *handled TSRMLS_DC)
{
HRESULT ret = S_OK;
trace("engine_thread_handler: running in thread %08x, should be %08x msg=%08x this=%08x\n",
tsrm_thread_id(), m_enginethread, msg, this);
if (handled)
*handled = 1;
if (m_enginethread == 0)
return E_UNEXPECTED;
switch(msg) {
case PHPSE_ADD_TYPELIB:
{
struct php_active_script_add_tlb_info *info = (struct php_active_script_add_tlb_info*)lParam;
ITypeLib *TypeLib;
if (SUCCEEDED(LoadRegTypeLib(*info->rguidTypeLib, (USHORT)info->dwMajor,
(USHORT)info->dwMinor, LANG_NEUTRAL, &TypeLib))) {
php_com_import_typelib(TypeLib, CONST_CS, CP_ACP TSRMLS_CC);
TypeLib->Release();
}
}
break;
case PHPSE_STATE_CHANGE:
{
/* handle the state change here */
SCRIPTSTATE ss = (SCRIPTSTATE)lParam;
int start_running = 0;
trace("%08x: DoSetScriptState(current=%s, new=%s)\n",
this,
scriptstate_to_string(m_scriptstate),
scriptstate_to_string(ss));
if (m_scriptstate == SCRIPTSTATE_INITIALIZED && (ss == SCRIPTSTATE_STARTED || ss == SCRIPTSTATE_CONNECTED))
start_running = 1;
m_scriptstate = ss;
/* inform host/site of the change */
if (m_pass_eng)
m_pass_eng->OnStateChange(m_scriptstate);
if (start_running) {
/* run "main()", as described in the docs */
if (m_pass_eng)
m_pass_eng->OnEnterScript();
trace("%08x: apply execute main to m_frags\n", this);
m_in_main = 1;
m_stop_main = 0;
zend_hash_apply_with_argument(&m_frags, execute_main, this TSRMLS_CC);
m_in_main = 0;
trace("%08x: --- done execute main\n", this);
if (m_pass_eng)
m_pass_eng->OnLeaveScript();
/* docs are a bit ambiguous here, but it appears that we should
* inform the host that the main script execution has completed,
* and also what the return value is */
VARIANT varRes;
VariantInit(&varRes);
if (m_pass_eng)
m_pass_eng->OnScriptTerminate(&varRes, NULL);
/*
m_scriptstate = SCRIPTSTATE_INITIALIZED;
if (m_pass_eng)
m_pass_eng->OnStateChange(m_scriptstate);
*/
}
}
break;
case PHPSE_INIT_NEW:
{
/* Prepare PHP/ZE for use */
trace("%08x: m_frags : INIT NEW\n", this);
zend_hash_init(&m_frags, 0, NULL, frag_dtor, TRUE);
SG(options) |= SAPI_OPTION_NO_CHDIR;
SG(server_context) = this;
/* override the default PHP error callback */
zend_error_cb = activescript_error_handler;
zend_alter_ini_entry("register_argc_argv", 19, "1", 1, PHP_INI_SYSTEM, PHP_INI_STAGE_ACTIVATE);
zend_alter_ini_entry("html_errors", 12, "0", 1, PHP_INI_SYSTEM, PHP_INI_STAGE_ACTIVATE);
zend_alter_ini_entry("implicit_flush", 15, "1", 1, PHP_INI_SYSTEM, PHP_INI_STAGE_ACTIVATE);
zend_alter_ini_entry("max_execution_time", 19, "0", 1, PHP_INI_SYSTEM, PHP_INI_STAGE_ACTIVATE);
php_request_startup(TSRMLS_C);
PG(during_request_startup) = 0;
trace("\n\n *** ticks func at %08x %08x ***\n\n\n", activescript_run_ticks, &activescript_run_ticks);
// php_add_tick_function(activescript_run_ticks);
}
break;
case PHPSE_CLOSE:
{
/* Close things down */
trace("%08x: m_frags : CLOSE/DESTROY\n", this);
m_scriptstate = SCRIPTSTATE_CLOSED;
if (m_pass_eng) {
m_pass_eng->OnStateChange(m_scriptstate);
trace("%08x: release site from this side\n", this);
m_pass_eng->Release();
m_pass_eng = NULL;
}
zend_hash_destroy(&m_frags);
php_request_shutdown(NULL);
break;
}
break;
case PHPSE_CLONE:
{
/* Clone the engine state. This is semantically equal to serializing all
* the parsed code from the source and unserializing it in the dest (this).
* IE doesn't appear to use it, but Windows Script Host does. I'd expect
* ASP/ASP.NET to do so also.
*
* FIXME: Probably won't work with IActiveScriptParseProcedure scriplets
* */
TPHPScriptingEngine *src = (TPHPScriptingEngine*)lParam;
trace("%08x: m_frags : CLONE\n", this);
zend_hash_apply_with_argument(&src->m_frags, clone_frags, this TSRMLS_CC);
}
break;
case PHPSE_ADD_SCRIPTLET:
{
/* Parse/compile a chunk of script that will act as an event handler.
* If the host supports IActiveScriptParseProcedure, this code will
* not be called.
* The docs are (typically) vague: AFAICT, once the code has been
* compiled, we are supposed to arrange for an IConnectionPoint
* advisory connection to the item/subitem, once the script
* moves into SCRIPTSTATE_CONNECTED.
* That's a lot of work!
*
* FIXME: this is currently almost useless
* */
struct php_active_script_add_scriptlet_info *info = (struct php_active_script_add_scriptlet_info*)lParam;
TWideString
default_name(info->pstrDefaultName),
code(info->pstrCode),
item_name(info->pstrItemName),
sub_item_name(info->pstrSubItemName),
event_name(info->pstrEventName),
delimiter(info->pstrDelimiter);
/* lets invent a function name for the scriptlet */
char sname[256];
/* should check if the name is already used! */
if (info->pstrDefaultName)
strcpy(sname, default_name.ansi_string());
else {
sname[0] = 0;
strcat(sname, "__");
if (info->pstrItemName) {
strcat(sname, item_name.ansi_string());
strcat(sname, "_");
}
if (info->pstrSubItemName) {
strcat(sname, sub_item_name.ansi_string());
strcat(sname, "_");
}
if (info->pstrEventName)
strcat(sname, event_name.ansi_string());
}
trace("%08x: AddScriptlet:\n state=%s\n name=%s\n code=%s\n item=%s\n subitem=%s\n event=%s\n delim=%s\n line=%d\n",
this, scriptstate_to_string(m_scriptstate),
default_name.safe_ansi_string(), code.safe_ansi_string(), item_name.safe_ansi_string(),
sub_item_name.safe_ansi_string(), event_name.safe_ansi_string(), delimiter.safe_ansi_string(),
info->ulStartingLineNumber);
code_frag *frag = compile_code_fragment(
FRAG_SCRIPTLET,
sname,
info->pstrCode,
info->ulStartingLineNumber,
info->pexcepinfo,
this
TSRMLS_CC);
if (frag) {
frag->persistent = (info->dwFlags & SCRIPTTEXT_ISPERSISTENT);
zend_hash_next_index_insert(&m_frags, &frag, sizeof(code_frag*), NULL);
/*
ScriptProcedureDispatch *disp = new ScriptProcedureDispatch;
disp->AddRef();
disp->m_frag = frag;
disp->m_procflags = info->dwFlags;
disp->m_engine = this;
frag->ptr = disp;
*info->ppdisp = disp;
*/
ret = S_OK;
} else {
ret = DISP_E_EXCEPTION;
}
*info->pbstrName = TWideString::bstr_from_ansi(sname);
trace("%08x: done with scriptlet %s\n", this, sname);
}
break;
case PHPSE_GET_DISPATCH:
{
struct php_active_script_get_dispatch_info *info = (struct php_active_script_get_dispatch_info *)lParam;
IDispatch *disp = NULL;
if (info->pstrItemName != NULL) {
zval **tmp;
/* use this rather than php_OLECHAR_to_char because we want to avoid emalloc here */
TWideString itemname(info->pstrItemName);
/* Get that item from the global namespace.
* If it is an object, export it as a dispatchable object.
* */
if (zend_hash_find(&EG(symbol_table), itemname.ansi_string(),
itemname.ansi_len() + 1, (void**)&tmp) == SUCCESS) {
if (Z_TYPE_PP(tmp) == IS_OBJECT) {
/* FIXME: if this causes an allocation (emalloc) and we are
* not in the engine thread, things could get ugly!!! */
disp = php_com_wrapper_export(*tmp TSRMLS_CC);
}
}
} else {
/* This object represents PHP global namespace */
disp = (IDispatch*) new ScriptDispatch;
}
if (disp) {
ret = GIT_put(disp, IID_IDispatch, &info->dispatch);
disp->Release();
} else {
ret = S_FALSE;
}
}
break;
case PHPSE_ADD_NAMED_ITEM:
{
/* The Host uses this to add objects to the global namespace.
* Some objects are intended to have their child properties
* globally visible, so we add those to the global namespace too.
* */
struct php_active_script_add_named_item_info *info = (struct php_active_script_add_named_item_info *)lParam;
TWideString name(info->pstrName);
IDispatch *disp;
if (SUCCEEDED(GIT_get(info->marshal, IID_IDispatch, (void**)&disp)))
add_to_global_namespace(disp, info->dwFlags, name.ansi_string() TSRMLS_CC);
}
break;
case PHPSE_SET_SITE:
{
if (m_pass_eng) {
m_pass_eng->Release();
m_pass_eng = NULL;
}
if (lParam)
GIT_get(lParam, IID_IActiveScriptSite, (void**)&m_pass_eng);
trace("%08x: site (engine-side) is now %08x (base=%08x)\n", this, m_pass_eng, m_pass);
}
break;
case PHPSE_EXEC_PROC:
{
ScriptProcedureDispatch *disp = (ScriptProcedureDispatch *)lParam;
execute_code_fragment(disp->m_frag, NULL, NULL TSRMLS_CC);
}
break;
case PHPSE_PARSE_PROC:
{
/* This is the IActiveScriptParseProcedure implementation.
* IE uses this to request for an IDispatch that it will invoke in
* response to some event, and tells us the code that it wants to
* run.
* We compile the code and pass it back a dispatch object.
* The object will then serialize access to the engine thread and
* execute the opcodes */
struct php_active_script_parse_proc_info *info = (struct php_active_script_parse_proc_info*)lParam;
TWideString
formal_params(info->pstrFormalParams),
procedure_name(info->pstrProcedureName),
item_name(info->pstrItemName),
delimiter(info->pstrDelimiter);
trace("%08x: ParseProc:\n state=%s\nparams=%s\nproc=%s\nitem=%s\n delim=%s\n line=%d\n",
this, scriptstate_to_string(m_scriptstate),
formal_params.ansi_string(), procedure_name.ansi_string(),
item_name.safe_ansi_string(), delimiter.safe_ansi_string(),
info->ulStartingLineNumber);
code_frag *frag = compile_code_fragment(
FRAG_PROCEDURE,
NULL,
info->pstrCode,
info->ulStartingLineNumber,
NULL,
this
TSRMLS_CC);
if (frag) {
frag->persistent = (info->dwFlags & SCRIPTTEXT_ISPERSISTENT);
zend_hash_next_index_insert(&m_frags, &frag, sizeof(code_frag*), NULL);
ScriptProcedureDispatch *disp = new ScriptProcedureDispatch;
disp->m_frag = frag;
disp->m_procflags = info->dwFlags;
disp->m_engine = this;
frag->ptr = disp;
info->dispcookie = disp->m_gitcookie;
} else {
ret = DISP_E_EXCEPTION;
}
}
break;
case PHPSE_PARSE_SCRIPT:
{
struct php_active_script_parse_info *info = (struct php_active_script_parse_info*)lParam;
int doexec;
TWideString
code(info->pstrCode),
item_name(info->pstrItemName),
delimiter(info->pstrDelimiter);
trace("%08x: ParseScriptText:\n state=%s\ncode=%s\n item=%s\n delim=%s\n line=%d\n",
this, scriptstate_to_string(m_scriptstate),
code.safe_ansi_string(), item_name.safe_ansi_string(), delimiter.safe_ansi_string(),
info->ulStartingLineNumber);
code_frag *frag = compile_code_fragment(
FRAG_MAIN,
info->dwFlags & SCRIPTTEXT_ISEXPRESSION ? FRAG_CREATE_FUNC : NULL,
info->pstrCode,
info->ulStartingLineNumber,
info->pexcepinfo,
this
TSRMLS_CC);
doexec = (info->dwFlags & SCRIPTTEXT_ISEXPRESSION) ||
m_scriptstate == SCRIPTSTATE_STARTED ||
m_scriptstate == SCRIPTSTATE_CONNECTED ||
m_scriptstate == SCRIPTSTATE_DISCONNECTED;
if (frag) {
frag->persistent = (info->dwFlags & SCRIPTTEXT_ISPERSISTENT);
ret = S_OK;
if (info->dwFlags & SCRIPTTEXT_ISEXPRESSION) {
if (m_scriptstate == SCRIPTSTATE_INITIALIZED) {
/* not allowed to execute code in this state */
ret = E_UNEXPECTED;
doexec = 0;
}
}
if (doexec) {
/* execute the code as an expression */
if (!execute_code_fragment(frag, info->pvarResult, info->pexcepinfo TSRMLS_CC))
ret = DISP_E_EXCEPTION;
}
zend_hash_next_index_insert(&m_frags, &frag, sizeof(code_frag*), NULL);
} else {
ret = DISP_E_EXCEPTION;
}
if (info->pvarResult) {
VariantInit(info->pvarResult);
}
}
break;
default:
trace("unhandled message type %08x\n", msg);
if (handled)
*handled = 0;
}
return ret;
}
/* The PHP/Zend state actually lives in this thread */
void TPHPScriptingEngine::engine_thread_func(void)
{
TSRMLS_FETCH();
int handled;
int terminated = 0;
MSG msg;
trace("%08x: engine thread started up!\n", this);
CoInitializeEx(0, COINIT_MULTITHREADED);
m_tsrm_hack = tsrm_ls;
while(!terminated) {
DWORD result = MsgWaitForMultipleObjects(0, NULL, FALSE, 4000, QS_ALLINPUT);
switch(result) {
case WAIT_OBJECT_0:
while(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
if (msg.message == WM_QUIT) {
terminated = 1;
} else if (msg.hwnd) {
TranslateMessage(&msg);
DispatchMessage(&msg);
} else {
handled = 1;
m_sync_thread_ret = engine_thread_handler(msg.message, msg.wParam, msg.lParam, &handled TSRMLS_CC);
if (handled)
SetEvent(m_sync_thread_msg);
}
}
break;
case WAIT_TIMEOUT:
trace("thread wait timed out\n");
break;
default:
trace("some strange value\n");
}
}
#if 0
while(GetMessage(&msg, NULL, 0, 0)) {
if (msg.message == WM_QUIT)
break;
handled = 1;
m_sync_thread_ret = engine_thread_handler(msg.message, msg.wParam, msg.lParam, &handled TSRMLS_CC);
if (handled)
SetEvent(m_sync_thread_msg);
}
trace("%08x: engine thread exiting!!!!!\n", this);
#endif
m_enginethread = 0;
CoUninitialize();
}
/* Only call this in the context of the engine thread, or you'll be sorry.
*
* When SCRIPTITEM_GLOBALMEMBERS is set, we're only adding COM objects to the namespace.
* We could add *all* properties, but I don't like this idea; what if the value changes
* while the page is running? We'd be left with stale data.
*
* TODO: evaluate if it is appropriate to register as an auto_global
* */
void TPHPScriptingEngine::add_to_global_namespace(IDispatch *disp, DWORD flags, char *name TSRMLS_DC)
{
zval *val;
ITypeInfo *typ;
int i;
unsigned int namelen;
FUNCDESC *func;
BSTR funcname;
TYPEATTR *attr;
DISPPARAMS dispparams;
VARIANT vres;
ITypeInfo *rettyp;
TYPEATTR *retattr;
trace("Add %s to global namespace\n", name);
php_com_wrap_dispatch(val, disp, CP_ACP TSRMLS_CC);
if (val == NULL) {
disp->Release();
return;
}
ZEND_SET_SYMBOL(&EG(symbol_table), name, val);
if ((flags & SCRIPTITEM_GLOBALMEMBERS) == 0) {
disp->Release();
return;
}
/* Enumerate properties and add those too */
if (FAILED(disp->GetTypeInfo(0, 0, &typ))) {
disp->Release();
return;
}
if (SUCCEEDED(typ->GetTypeAttr(&attr))) {
for (i = 0; i < attr->cFuncs; i++) {
if (FAILED(typ->GetFuncDesc(i, &func)))
continue;
/* Look at its type */
if (func->invkind == INVOKE_PROPERTYGET
&& VT_PTR == func->elemdescFunc.tdesc.vt
&& VT_USERDEFINED == func->elemdescFunc.tdesc.lptdesc->vt
&& SUCCEEDED(typ->GetRefTypeInfo(func->elemdescFunc.tdesc.lptdesc->hreftype, &rettyp)))
{
if (SUCCEEDED(rettyp->GetTypeAttr(&retattr))) {
if (retattr->typekind == TKIND_DISPATCH) {
/* It's dispatchable */
/* get the value */
dispparams.cArgs = 0;
dispparams.cNamedArgs = 0;
VariantInit(&vres);
if (SUCCEEDED(disp->Invoke(func->memid, IID_NULL, 0, func->invkind,
&dispparams, &vres, NULL, NULL))) {
/* Get its dispatch */
IDispatch *sub = NULL;
if (V_VT(&vres) == VT_UNKNOWN)
V_UNKNOWN(&vres)->QueryInterface(IID_IDispatch, (void**)&sub);
else if (V_VT(&vres) == VT_DISPATCH)
sub = V_DISPATCH(&vres);
if (sub) {
/* find out its name */
typ->GetDocumentation(func->memid, &funcname, NULL, NULL, NULL);
name = php_com_olestring_to_string(funcname, &namelen, CP_ACP, 0);
/* add to namespace */
zval *subval;
php_com_wrap_dispatch(subval, sub, CP_ACP TSRMLS_CC);
if (subval) {
ZEND_SET_SYMBOL(&EG(symbol_table), name, subval);
}
efree(name);
SysFreeString(funcname);
}
VariantClear(&vres);
}
}
rettyp->ReleaseTypeAttr(retattr);
}
rettyp->Release();
}
typ->ReleaseFuncDesc(func);
}
typ->ReleaseTypeAttr(attr);
}
disp->Release();
}
STDMETHODIMP_(DWORD) TPHPScriptingEngine::AddRef(void)
{
return InterlockedIncrement(const_cast<long*> (&m_refcount));
}
STDMETHODIMP_(DWORD) TPHPScriptingEngine::Release(void)
{
DWORD ret = InterlockedDecrement(const_cast<long*> (&m_refcount));
if (ret == 0) {
trace("%08x: Release: zero refcount, destroy the engine!\n", this);
delete this;
}
return ret;
}
STDMETHODIMP TPHPScriptingEngine::QueryInterface(REFIID iid, void **ppvObject)
{
*ppvObject = NULL;
if (IsEqualGUID(IID_IActiveScript, iid)) {
*ppvObject = (IActiveScript*)this;
} else if (IsEqualGUID(IID_IActiveScriptParse, iid)) {
*ppvObject = (IActiveScriptParse*)this;
} else if (IsEqualGUID(IID_IActiveScriptParseProcedure, iid)) {
*ppvObject = (IActiveScriptParseProcedure*)this;
} else if (IsEqualGUID(IID_IUnknown, iid)) {
*ppvObject = this;
} else {
LPOLESTR guidw;
StringFromCLSID(iid, &guidw);
{
TWideString guid(guidw);
trace("%08x: QueryInterface for unsupported %s\n", this, guid.ansi_string());
}
CoTaskMemFree(guidw);
}
if (*ppvObject) {
AddRef();
return S_OK;
}
return E_NOINTERFACE;
}
/* This is called by the host to set the scrite site.
* It also defines the base thread. */
STDMETHODIMP TPHPScriptingEngine::SetScriptSite(IActiveScriptSite *pass)
{
TSRMLS_FETCH();
tsrm_mutex_lock(m_mutex);
trace("%08x: -----> Base thread is %08x\n", this, tsrm_thread_id());
if (m_pass) {
m_pass->Release();
m_pass = NULL;
SEND_THREAD_MESSAGE(this, PHPSE_SET_SITE, 0, 0 TSRMLS_CC);
}
if (pass == NULL) {
trace("Closing down site; we should have no references to objects from the host\n"
" m_pass=%08x\n m_pass_eng=%08x\n What about named items??\n",
m_pass, m_pass_eng);
}
m_pass = pass;
if (m_pass) {
m_pass->AddRef();
DWORD cookie;
if (SUCCEEDED(GIT_put(m_pass, IID_IActiveScriptSite, &cookie)))
SEND_THREAD_MESSAGE(this, PHPSE_SET_SITE, 0, cookie TSRMLS_CC);
if (m_scriptstate == SCRIPTSTATE_UNINITIALIZED)
SEND_THREAD_MESSAGE(this, PHPSE_STATE_CHANGE, 0, SCRIPTSTATE_INITIALIZED TSRMLS_CC);
}
tsrm_mutex_unlock(m_mutex);
return S_OK;
}
STDMETHODIMP TPHPScriptingEngine::GetScriptSite(REFIID riid, void **ppvObject)
{
HRESULT ret = S_FALSE;
trace("%08x: GetScriptSite()\n", this);
tsrm_mutex_lock(m_mutex);
if (m_pass)
ret = m_pass->QueryInterface(riid, ppvObject);
tsrm_mutex_unlock(m_mutex);
return ret;
}
STDMETHODIMP TPHPScriptingEngine::SetScriptState(SCRIPTSTATE ss)
{
TSRMLS_FETCH();
trace("%08x: SetScriptState(%s)\n", this, scriptstate_to_string(ss));
return SEND_THREAD_MESSAGE(this, PHPSE_STATE_CHANGE, 0, ss TSRMLS_CC);
}
STDMETHODIMP TPHPScriptingEngine::GetScriptState(SCRIPTSTATE *pssState)
{
trace("%08x: GetScriptState(current=%s)\n", this, scriptstate_to_string(m_scriptstate));
tsrm_mutex_lock(m_mutex);
*pssState = m_scriptstate;
tsrm_mutex_unlock(m_mutex);
return S_OK;
}
STDMETHODIMP TPHPScriptingEngine::Close(void)
{
TSRMLS_FETCH();
if (m_pass) {
m_pass->Release();
m_pass = NULL;
}
SEND_THREAD_MESSAGE(this, PHPSE_CLOSE, 0, 0 TSRMLS_CC);
return S_OK;
}
/* Add an item to global namespace.
* This is called in the context of the base thread (or perhaps some other thread).
* We want to be able to work with the object in the engine thread, so we marshal
* it into a stream and let the engine thread deal with it.
* This works quite nicely when PHP scripts call into the object; threading is
* handled correctly. */
STDMETHODIMP TPHPScriptingEngine::AddNamedItem(LPCOLESTR pstrName, DWORD dwFlags)
{
struct php_active_script_add_named_item_info info;
TSRMLS_FETCH();
info.pstrName = pstrName;
info.dwFlags = dwFlags;
m_pass->GetItemInfo(pstrName, SCRIPTINFO_IUNKNOWN, &info.punk, NULL);
if (SUCCEEDED(GIT_put(info.punk, IID_IDispatch, &info.marshal))) {
SEND_THREAD_MESSAGE(this, PHPSE_ADD_NAMED_ITEM, 0, (LPARAM)&info TSRMLS_CC);
}
info.punk->Release();
return S_OK;
}
/* Bind to a type library */
STDMETHODIMP TPHPScriptingEngine::AddTypeLib(
/* [in] */ REFGUID rguidTypeLib,
/* [in] */ DWORD dwMajor,
/* [in] */ DWORD dwMinor,
/* [in] */ DWORD dwFlags)
{
struct php_active_script_add_tlb_info info;
TSRMLS_FETCH();
info.rguidTypeLib = &rguidTypeLib;
info.dwMajor = dwMajor;
info.dwMinor = dwMinor;
info.dwFlags = dwFlags;
SEND_THREAD_MESSAGE(this, PHPSE_ADD_TYPELIB, 0, (LPARAM)&info TSRMLS_CC);
return S_OK;
}
/* Returns an object representing the PHP Scripting Engine.
* Optionally, a client can request a particular item directly.
* For the moment, we only do the bare minimum amount of work
* for the engine to work correctly; we can flesh out this part
* a little later. */
STDMETHODIMP TPHPScriptingEngine::GetScriptDispatch(
/* [in] */ LPCOLESTR pstrItemName,
/* [out] */ IDispatch **ppdisp)
{
TSRMLS_FETCH();
*ppdisp = NULL;
struct php_active_script_get_dispatch_info info;
info.pstrItemName = pstrItemName;
info.dispatch = NULL;
/* This hack is required because the host is likely to query us
* for a dispatch if we use any of its objects from PHP script.
* Since the engine thread will be waiting for the return from
* a COM call, we need to deliberately poke a hole in thread
* safety so that it is possible to read the symbol table from
* outside the engine thread and give it a valid return value.
* This is "safe" only in this instance, since we are not modifying
* the engine state by looking up the dispatch (I hope).
* The scripting engine rules pretty much guarantee that this
* method is only called in the base thread. */
if (tsrm_thread_id() != m_enginethread) {
tsrm_ls = m_tsrm_hack;
trace("HEY: hacking thread safety!\n");
}
if (S_OK == engine_thread_handler(PHPSE_GET_DISPATCH, 0, (LPARAM)&info, NULL TSRMLS_CC)) {
GIT_get(info.dispatch, IID_IDispatch, (void**)ppdisp);
}
if (*ppdisp) {
return S_OK;
}
return S_FALSE;
}
STDMETHODIMP TPHPScriptingEngine::GetCurrentScriptThreadID(
/* [out] */ SCRIPTTHREADID *pstidThread)
{
// tsrm_mutex_lock(m_mutex);
trace("%08x: GetCurrentScriptThreadID()\n", this);
*pstidThread = m_enginethread;
// tsrm_mutex_unlock(m_mutex);
return S_OK;
}
STDMETHODIMP TPHPScriptingEngine::GetScriptThreadID(
/* [in] */ DWORD dwWin32ThreadId,
/* [out] */ SCRIPTTHREADID *pstidThread)
{
// tsrm_mutex_lock(m_mutex);
trace("%08x: GetScriptThreadID()\n", this);
*pstidThread = dwWin32ThreadId;
// tsrm_mutex_unlock(m_mutex);
return S_OK;
}
STDMETHODIMP TPHPScriptingEngine::GetScriptThreadState(
/* [in] */ SCRIPTTHREADID stidThread,
/* [out] */ SCRIPTTHREADSTATE *pstsState)
{
// tsrm_mutex_lock(m_mutex);
trace("%08x: GetScriptThreadState()\n", this);
*pstsState = SCRIPTTHREADSTATE_NOTINSCRIPT;
switch(stidThread) {
case SCRIPTTHREADID_BASE:
stidThread = m_basethread;
break;
case SCRIPTTHREADID_CURRENT:
stidThread = m_enginethread;
break;
};
if (stidThread == m_basethread) {
*pstsState = SCRIPTTHREADSTATE_NOTINSCRIPT;
} else if (stidThread == m_enginethread) {
*pstsState = SCRIPTTHREADSTATE_NOTINSCRIPT;
}
// tsrm_mutex_unlock(m_mutex);
return S_OK;
}
STDMETHODIMP TPHPScriptingEngine::InterruptScriptThread(
/* [in] */ SCRIPTTHREADID stidThread,
/* [in] */ const EXCEPINFO *pexcepinfo,
/* [in] */ DWORD dwFlags)
{
/* do not serialize this method, or call into the script site */
trace("%08x: InterruptScriptThread()\n", this);
return S_OK;
}
/* Clone is essential when running under Windows Script Host.
* It creates an engine to parse the code. Once it is parsed,
* the host clones other engines from the original and runs those.
* It is intended to be a fast method of running the same script
* multiple times in multiple threads. */
STDMETHODIMP TPHPScriptingEngine::Clone(
/* [out] */ IActiveScript **ppscript)
{
TPHPScriptingEngine *cloned = new TPHPScriptingEngine;
TSRMLS_FETCH();
trace("%08x: Clone()\n", this);
if (ppscript)
*ppscript = NULL;
if (cloned) {
cloned->InitNew();
SEND_THREAD_MESSAGE(cloned, PHPSE_CLONE, 0, (LPARAM)this TSRMLS_CC);
trace("%08x: Cloned OK, returning cloned object ptr %08x\n", this, cloned);
*ppscript = (IActiveScript*)cloned;
return S_OK;
}
return E_FAIL;
}
STDMETHODIMP TPHPScriptingEngine::InitNew( void)
{
TSRMLS_FETCH();
SEND_THREAD_MESSAGE(this, PHPSE_INIT_NEW, 0, 0 TSRMLS_CC);
return S_OK;
}
STDMETHODIMP TPHPScriptingEngine::AddScriptlet(
/* [in] */ LPCOLESTR pstrDefaultName,
/* [in] */ LPCOLESTR pstrCode,
/* [in] */ LPCOLESTR pstrItemName,
/* [in] */ LPCOLESTR pstrSubItemName,
/* [in] */ LPCOLESTR pstrEventName,
/* [in] */ LPCOLESTR pstrDelimiter,
/* [in] */ DWORD dwSourceContextCookie,
/* [in] */ ULONG ulStartingLineNumber,
/* [in] */ DWORD dwFlags,
/* [out] */ BSTR *pbstrName,
/* [out] */ EXCEPINFO *pexcepinfo)
{
struct php_active_script_add_scriptlet_info info;
TSRMLS_FETCH();
info.pstrDefaultName = pstrDefaultName;
info.pstrCode = pstrCode;
info.pstrItemName = pstrItemName;
info.pstrSubItemName = pstrSubItemName;
info.pstrEventName = pstrEventName;
info.pstrDelimiter = pstrDelimiter;
info.dwSourceContextCookie = dwSourceContextCookie;
info.ulStartingLineNumber = ulStartingLineNumber;
info.dwFlags = dwFlags;
info.pbstrName = pbstrName;
info.pexcepinfo = pexcepinfo;
return SEND_THREAD_MESSAGE(this, PHPSE_ADD_SCRIPTLET, 0, (LPARAM)&info TSRMLS_CC);
}
STDMETHODIMP TPHPScriptingEngine::ParseScriptText(
/* [in] */ LPCOLESTR pstrCode,
/* [in] */ LPCOLESTR pstrItemName,
/* [in] */ IUnknown *punkContext,
/* [in] */ LPCOLESTR pstrDelimiter,
/* [in] */ DWORD dwSourceContextCookie,
/* [in] */ ULONG ulStartingLineNumber,
/* [in] */ DWORD dwFlags,
/* [out] */ VARIANT *pvarResult,
/* [out] */ EXCEPINFO *pexcepinfo)
{
struct php_active_script_parse_info info;
TSRMLS_FETCH();
info.pstrCode = pstrCode;
info.pstrItemName = pstrItemName;
info.punkContext = punkContext;
info.pstrDelimiter = pstrDelimiter;
info.dwSourceContextCookie = dwSourceContextCookie;
info.ulStartingLineNumber = ulStartingLineNumber;
info.dwFlags = dwFlags;
info.pvarResult = pvarResult;
info.pexcepinfo = pexcepinfo;
return SEND_THREAD_MESSAGE(this, PHPSE_PARSE_SCRIPT, 0, (LPARAM)&info TSRMLS_CC);
}
STDMETHODIMP TPHPScriptingEngine::ParseProcedureText(
/* [in] */ LPCOLESTR pstrCode,
/* [in] */ LPCOLESTR pstrFormalParams,
/* [in] */ LPCOLESTR pstrProcedureName,
/* [in] */ LPCOLESTR pstrItemName,
/* [in] */ IUnknown *punkContext,
/* [in] */ LPCOLESTR pstrDelimiter,
/* [in] */ DWORD dwSourceContextCookie,
/* [in] */ ULONG ulStartingLineNumber,
/* [in] */ DWORD dwFlags,
/* [out] */ IDispatch **ppdisp)
{
struct php_active_script_parse_proc_info info;
HRESULT ret;
TSRMLS_FETCH();
info.pstrCode = pstrCode;
info.pstrFormalParams = pstrFormalParams;
info.pstrProcedureName = pstrProcedureName;
info.pstrItemName = pstrItemName;
info.punkContext = punkContext;
info.pstrDelimiter = pstrDelimiter;
info.dwSourceContextCookie = dwSourceContextCookie;
info.ulStartingLineNumber = ulStartingLineNumber;
info.dwFlags = dwFlags;
ret = SEND_THREAD_MESSAGE(this, PHPSE_PARSE_PROC, 0, (LPARAM)&info TSRMLS_CC);
if (ret == S_OK)
ret = GIT_get(info.dispcookie, IID_IDispatch, (void**)ppdisp);
trace("ParseProc: ret=%08x disp=%08x\n", ret, *ppdisp);
return ret;
}
extern "C"
void activescript_error_func(int type, const char *error_msg, ...)
{
TSRMLS_FETCH();
TPHPScriptingEngine *engine = (TPHPScriptingEngine*)SG(server_context);
}
class TActiveScriptError:
public IActiveScriptError
{
protected:
volatile LONG m_refcount;
public:
/* IUnknown */
STDMETHODIMP QueryInterface(REFIID iid, void **ppvObject) {
*ppvObject = NULL;
if (IsEqualGUID(IID_IActiveScriptError, iid)) {
*ppvObject = (IActiveScriptError*)this;
} else if (IsEqualGUID(IID_IUnknown, iid)) {
*ppvObject = this;
}
if (*ppvObject) {
AddRef();
return S_OK;
}
return E_NOINTERFACE;
}
STDMETHODIMP_(DWORD) AddRef(void) {
return InterlockedIncrement(const_cast<long*> (&m_refcount));
}
STDMETHODIMP_(DWORD) Release(void) {
DWORD ret = InterlockedDecrement(const_cast<long*> (&m_refcount));
trace("Release: errobj refcount=%d\n", ret);
if (ret == 0)
delete this;
return ret;
}
HRESULT STDMETHODCALLTYPE GetExceptionInfo(
/* [out] */ EXCEPINFO *pexcepinfo)
{
memset(pexcepinfo, 0, sizeof(EXCEPINFO));
pexcepinfo->bstrDescription = SysAllocString(m_message);
pexcepinfo->bstrSource = SysAllocString(m_filename);
pexcepinfo->wCode = 1000;
return S_OK;
}
HRESULT STDMETHODCALLTYPE GetSourcePosition(
/* [out] */ DWORD *pdwSourceContext,
/* [out] */ ULONG *pulLineNumber,
/* [out] */ LONG *plCharacterPosition)
{
*pdwSourceContext = 0;
*pulLineNumber = m_lineno;
*plCharacterPosition = 0;
return S_OK;
}
HRESULT STDMETHODCALLTYPE GetSourceLineText(
/* [out] */ BSTR *pbstrSourceLine)
{
*pbstrSourceLine = NULL;
return E_FAIL;
}
BSTR m_filename, m_message;
UINT m_lineno;
TActiveScriptError(const char *filename, const uint lineno, const char *message)
{
m_refcount = 0; /* start with zero refcount because this object is passed
* directly to the script site; it will call addref */
m_filename = TWideString::bstr_from_ansi((char*)filename);
m_message = TWideString::bstr_from_ansi((char*)message);
m_lineno = lineno;
}
~TActiveScriptError()
{
trace("%08x: cleaning up error object\n", this);
SysFreeString(m_filename);
SysFreeString(m_message);
}
};
extern "C"
void activescript_error_handler(int type, const char *error_filename,
const uint error_lineno, const char *format, va_list args)
{
TSRMLS_FETCH();
char *buf;
int buflen;
TPHPScriptingEngine *engine = (TPHPScriptingEngine*)SG(server_context);
buflen = vspprintf(&buf, PG(log_errors_max_len), format, args);
trace("%08x: Error: %s\n", engine, buf);
/* if it's a fatal error, report it using IActiveScriptError. */
switch(type) {
case E_ERROR:
case E_CORE_ERROR:
case E_COMPILE_ERROR:
case E_USER_ERROR:
case E_PARSE:
/* trigger an error in the host */
TActiveScriptError *eobj = new TActiveScriptError(error_filename, error_lineno, buf);
trace("raising error object!\n");
if (engine->m_pass_eng)
engine->m_pass_eng->OnScriptError(eobj);
/* now throw the exception to abort execution */
if (engine->m_err_trap)
longjmp(*engine->m_err_trap, 1);
break;
}
efree(buf);
}
Reference in New Issue View Git Blame Copy Permalink