/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2015 The PHP Group |
+----------------------------------------------------------------------+
| http://www.opensource.org/licenses/mit-license.php MIT License |
+----------------------------------------------------------------------+
| Author: Jani Taskinen <jani.taskinen@iki.fi> |
| Author: Patrick Reilly <preilly@php.net> |
| Author: Stefan Siegl <stesie@php.net> |
+----------------------------------------------------------------------+
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
extern "C" {
#include "php.h"
#include "ext/date/php_date.h"
#include "ext/standard/php_string.h"
#include "zend_interfaces.h"
#include "zend_closures.h"
#include "zend_exceptions.h"
}
#if !defined(_WIN32) && PHP_V8_API_VERSION >= 3029036
#include <libplatform/libplatform.h>
#endif
#include "php_v8js_macros.h"
#include "v8js_v8.h"
#include "v8js_timer.h"
#include "v8js_exceptions.h"
void v8js_v8_init(TSRMLS_D) /* {{{ */
{
/* Run only once; thread-local test first */
if (V8JSG(v8_initialized)) {
return;
}
/* Set thread-local flag, that V8 was initialized. */
V8JSG(v8_initialized) = 1;
#ifdef ZTS
v8js_process_globals.lock.lock();
if(v8js_process_globals.v8_initialized) {
/* V8 already has been initialized by another thread */
v8js_process_globals.lock.unlock();
return;
}
#endif
#if !defined(_WIN32) && PHP_V8_API_VERSION >= 3029036
v8js_process_globals.v8_platform = v8::platform::CreateDefaultPlatform();
v8::V8::InitializePlatform(v8js_process_globals.v8_platform);
#endif
/* Set V8 command line flags (must be done before V8::Initialize()!) */
if (v8js_process_globals.v8_flags) {
v8::V8::SetFlagsFromString(v8js_process_globals.v8_flags,
strlen(v8js_process_globals.v8_flags));
}
/* Initialize V8 */
v8::V8::Initialize();
#ifdef ZTS
v8js_process_globals.v8_initialized = 1;
v8js_process_globals.lock.unlock();
#endif
}
/* }}} */
void v8js_v8_call(v8js_ctx *c, zval **return_value,
long flags, long time_limit, long memory_limit,
std::function< v8::Local<v8::Value>(v8::Isolate *) >& v8_call TSRMLS_DC) /* {{{ */
{
char *tz = NULL;
V8JS_CTX_PROLOGUE(c);
V8JSG(timer_mutex).lock();
c->time_limit_hit = false;
c->memory_limit_hit = false;
V8JSG(timer_mutex).unlock();
/* Catch JS exceptions */
v8::TryCatch try_catch;
/* Set flags for runtime use */
c->flags = flags;
/* Check if timezone has been changed and notify V8 */
tz = getenv("TZ");
if (tz != NULL) {
if (c->tz == NULL) {
c->tz = strdup(tz);
}
else if (strcmp(c->tz, tz) != 0) {
v8::Date::DateTimeConfigurationChangeNotification(c->isolate);
free(c->tz);
c->tz = strdup(tz);
}
}
if (time_limit > 0 || memory_limit > 0) {
// If timer thread is not running then start it
if (!V8JSG(timer_thread)) {
// If not, start timer thread
V8JSG(timer_thread) = new std::thread(v8js_timer_thread TSRMLS_CC);
}
}
/* Always pass the timer to the stack so there can be follow-up changes to
* the time & memory limit. */
v8js_timer_push(time_limit, memory_limit, c TSRMLS_CC);
/* Execute script */
c->in_execution++;
v8::Local<v8::Value> result = v8_call(c->isolate);
c->in_execution--;
/* Pop our context from the stack and read (possibly updated) limits
* into local variables. */
V8JSG(timer_mutex).lock();
v8js_timer_ctx *timer_ctx = V8JSG(timer_stack).front();
V8JSG(timer_stack).pop_front();
V8JSG(timer_mutex).unlock();
time_limit = timer_ctx->time_limit;
memory_limit = timer_ctx->memory_limit;
efree(timer_ctx);
/* Check for fatal error marker possibly set by v8js_error_handler; just
* rethrow the error since we're now out of V8. */
if(V8JSG(fatal_error_abort)) {
zend_bailout();
}
char exception_string[64];
if (c->time_limit_hit) {
// Execution has been terminated due to time limit
sprintf(exception_string, "Script time limit of %lu milliseconds exceeded", time_limit);
zend_throw_exception(php_ce_v8js_time_limit_exception, exception_string, 0 TSRMLS_CC);
return;
}
if (c->memory_limit_hit) {
// Execution has been terminated due to memory limit
sprintf(exception_string, "Script memory limit of %lu bytes exceeded", memory_limit);
zend_throw_exception(php_ce_v8js_memory_limit_exception, exception_string, 0 TSRMLS_CC);
return;
}
if (!try_catch.CanContinue()) {
// At this point we can't re-throw the exception
return;
}
/* There was pending exception left from earlier executions -> throw to PHP */
if (c->pending_exception) {
zend_throw_exception_object(c->pending_exception TSRMLS_CC);
c->pending_exception = NULL;
}
/* Handle runtime JS exceptions */
if (try_catch.HasCaught()) {
/* Pending exceptions are set only in outer caller, inner caller exceptions are always rethrown */
if (c->in_execution < 1) {
/* Report immediately if report_uncaught is true */
if (c->report_uncaught) {
v8js_throw_script_exception(c->isolate, &try_catch TSRMLS_CC);
return;
}
/* Exception thrown from JS, preserve it for future execution */
if (result.IsEmpty()) {
MAKE_STD_ZVAL(c->pending_exception);
v8js_create_script_exception(c->pending_exception, c->isolate, &try_catch TSRMLS_CC);
return;
}
}
/* Rethrow back to JS */
try_catch.ReThrow();
return;
}
/* Convert V8 value to PHP value */
if (!result.IsEmpty()) {
v8js_to_zval(result, *return_value, flags, c->isolate TSRMLS_CC);
}
}
/* }}} */
void v8js_terminate_execution(v8::Isolate *isolate) /* {{{ */
{
if(v8::V8::IsExecutionTerminating(isolate)) {
/* Execution already terminating, needn't trigger it again and
* especially must not execute the spinning loop (which would cause
* crashes in V8 itself, at least with 4.2 and 4.3 version lines). */
return;
}
/* Unfortunately just calling TerminateExecution on the isolate is not
* enough, since v8 just marks the thread as "to be aborted" and doesn't
* immediately do so. Hence we enter an endless loop after signalling
* termination, so we definitely don't execute JS code after the exit()
* statement. */
v8::Locker locker(isolate);
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Local<v8::String> source = V8JS_STR("for(;;);");
v8::Local<v8::Script> script = v8::Script::Compile(source);
v8::V8::TerminateExecution(isolate);
script->Run();
}
/* }}} */
int v8js_get_properties_hash(v8::Handle<v8::Value> jsValue, HashTable *retval, int flags, v8::Isolate *isolate TSRMLS_DC) /* {{{ */
{
v8::Local<v8::Object> jsObj = jsValue->ToObject();
if (!jsObj.IsEmpty()) {
v8::Local<v8::Array> jsKeys = jsObj->GetPropertyNames();
for (unsigned i = 0; i < jsKeys->Length(); i++)
{
v8::Local<v8::String> jsKey = jsKeys->Get(i)->ToString();
/* Skip any prototype properties */
if (!jsObj->HasOwnProperty(jsKey) && !jsObj->HasRealNamedProperty(jsKey) && !jsObj->HasRealNamedCallbackProperty(jsKey)) {
continue;
}
v8::Local<v8::Value> jsVal = jsObj->Get(jsKey);
v8::String::Utf8Value cstr(jsKey);
const char *key = ToCString(cstr);
zval *value = NULL;
v8::Local<v8::Value> php_object;
if (jsVal->IsObject()) {
php_object = v8::Local<v8::Object>::Cast(jsVal)->GetHiddenValue(V8JS_SYM(PHPJS_OBJECT_KEY));
}
if (!php_object.IsEmpty()) {
/* This is a PHP object, passed to JS and back. */
value = reinterpret_cast<zval *>(v8::External::Cast(*php_object)->Value());
Z_ADDREF_P(value);
}
else {
MAKE_STD_ZVAL(value);
if (v8js_to_zval(jsVal, value, flags, isolate TSRMLS_CC) == FAILURE) {
zval_ptr_dtor(&value);
return FAILURE;
}
}
if ((flags & V8JS_FLAG_FORCE_ARRAY) || jsValue->IsArray()) {
zend_symtable_update(retval, key, strlen(key) + 1, (void *)&value, sizeof(zval *), NULL);
} else {
zend_hash_update(retval, key, strlen(key) + 1, (void *) &value, sizeof(zval *), NULL);
}
}
return SUCCESS;
}
return FAILURE;
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/