mirror of
https://github.com/phpv8/v8js.git
synced 2024-11-09 22:08:40 +00:00
525 lines
15 KiB
C++
525 lines
15 KiB
C++
/*
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+----------------------------------------------------------------------+
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| PHP Version 7 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2017 The PHP Group |
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+----------------------------------------------------------------------+
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| http://www.opensource.org/licenses/mit-license.php MIT License |
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+----------------------------------------------------------------------+
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| Author: Jani Taskinen <jani.taskinen@iki.fi> |
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| Author: Patrick Reilly <preilly@php.net> |
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| Author: Stefan Siegl <stesie@php.net> |
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+----------------------------------------------------------------------+
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "php_v8js_macros.h"
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#include "v8js_commonjs.h"
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#include "v8js_exceptions.h"
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extern "C" {
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#include "zend_exceptions.h"
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}
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/* global.exit - terminate execution */
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V8JS_METHOD(exit) /* {{{ */
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{
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v8::Isolate *isolate = info.GetIsolate();
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v8js_terminate_execution(isolate);
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}
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/* }}} */
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/* global.sleep - sleep for passed seconds */
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V8JS_METHOD(sleep) /* {{{ */
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{
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php_sleep(info[0]->Int32Value());
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}
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/* }}} */
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/* global.print - php print() */
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V8JS_METHOD(print) /* {{{ */
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{
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v8::Isolate *isolate = info.GetIsolate();
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zend_long ret = 0;
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for (int i = 0; i < info.Length(); i++) {
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v8::String::Utf8Value str(info[i]);
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const char *cstr = ToCString(str);
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ret = PHPWRITE(cstr, strlen(cstr));
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}
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info.GetReturnValue().Set(zend_long_to_v8js(ret, isolate));
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}
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/* }}} */
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static void v8js_dumper(v8::Isolate *isolate, v8::Local<v8::Value> var, int level) /* {{{ */
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{
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if (level > 1) {
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php_printf("%*c", (level - 1) * 2, ' ');
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}
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if (var.IsEmpty())
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{
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php_printf("<empty>\n");
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return;
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}
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if (var->IsNull() || var->IsUndefined() /* PHP compat */)
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{
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php_printf("NULL\n");
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return;
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}
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if (var->IsInt32())
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{
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php_printf("int(%ld)\n", (long) var->IntegerValue());
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return;
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}
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if (var->IsUint32())
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{
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php_printf("int(%lu)\n", (unsigned long) var->IntegerValue());
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return;
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}
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if (var->IsNumber())
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{
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php_printf("float(%f)\n", var->NumberValue());
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return;
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}
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if (var->IsBoolean())
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{
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php_printf("bool(%s)\n", var->BooleanValue() ? "true" : "false");
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return;
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}
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v8::TryCatch try_catch; /* object.toString() can throw an exception */
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v8::Local<v8::String> details;
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if(var->IsRegExp()) {
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v8::RegExp *re = v8::RegExp::Cast(*var);
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details = re->GetSource();
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}
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else {
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details = var->ToDetailString();
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if (try_catch.HasCaught()) {
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details = V8JS_SYM("<toString threw exception>");
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}
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}
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v8::String::Utf8Value str(details);
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const char *valstr = ToCString(str);
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size_t valstr_len = details->ToString()->Utf8Length();
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if (var->IsString())
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{
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php_printf("string(%zu) \"", valstr_len);
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PHPWRITE(valstr, valstr_len);
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php_printf("\"\n");
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}
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else if (var->IsDate())
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{
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// fake the fields of a PHP DateTime
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php_printf("Date(%s)\n", valstr);
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}
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else if (var->IsRegExp())
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{
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php_printf("regexp(/%s/)\n", valstr);
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}
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else if (var->IsArray())
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{
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v8::Local<v8::Array> array = v8::Local<v8::Array>::Cast(var);
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uint32_t length = array->Length();
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php_printf("array(%d) {\n", length);
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for (unsigned i = 0; i < length; i++) {
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php_printf("%*c[%d] =>\n", level * 2, ' ', i);
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v8js_dumper(isolate, array->Get(i), level + 1);
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}
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if (level > 1) {
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php_printf("%*c", (level - 1) * 2, ' ');
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}
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ZEND_PUTS("}\n");
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}
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else if (var->IsObject())
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{
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v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(var);
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V8JS_GET_CLASS_NAME(cname, object);
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int hash = object->GetIdentityHash();
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if (var->IsFunction() && strcmp(ToCString(cname), "Closure") != 0)
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{
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v8::String::Utf8Value csource(object->ToString());
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php_printf("object(Closure)#%d {\n%*c%s\n", hash, level * 2 + 2, ' ', ToCString(csource));
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}
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else
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{
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v8::Local<v8::Array> keys = object->GetOwnPropertyNames();
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uint32_t length = keys->Length();
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if (strcmp(ToCString(cname), "Array") == 0 ||
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strcmp(ToCString(cname), "V8Object") == 0) {
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php_printf("array");
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} else {
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php_printf("object(%s)#%d", ToCString(cname), hash);
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}
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php_printf(" (%d) {\n", length);
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for (unsigned i = 0; i < length; i++) {
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v8::Local<v8::String> key = keys->Get(i)->ToString();
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v8::String::Utf8Value kname(key);
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php_printf("%*c[\"%s\"] =>\n", level * 2, ' ', ToCString(kname));
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v8js_dumper(isolate, object->Get(key), level + 1);
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}
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}
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if (level > 1) {
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php_printf("%*c", (level - 1) * 2, ' ');
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}
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ZEND_PUTS("}\n");
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}
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else /* null, undefined, etc. */
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{
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php_printf("<%s>\n", valstr);
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}
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}
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/* }}} */
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/* global.var_dump - Dump JS values */
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V8JS_METHOD(var_dump) /* {{{ */
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{
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v8::Isolate *isolate = info.GetIsolate();
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for (int i = 0; i < info.Length(); i++) {
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v8js_dumper(isolate, info[i], 1);
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}
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info.GetReturnValue().Set(V8JS_NULL);
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}
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/* }}} */
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V8JS_METHOD(require)
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{
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v8::Isolate *isolate = info.GetIsolate();
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// Get the extension context
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v8::Local<v8::External> data = v8::Local<v8::External>::Cast(info.Data());
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v8js_ctx *c = static_cast<v8js_ctx*>(data->Value());
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// Check that we have a module loader
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if(Z_TYPE(c->module_loader) == IS_NULL) {
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info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("No module loader")));
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return;
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}
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v8::String::Utf8Value module_id_v8(info[0]);
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const char *module_id = ToCString(module_id_v8);
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char *normalised_path, *module_name;
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if (Z_TYPE(c->module_normaliser) == IS_NULL) {
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// No custom normalisation routine registered, use internal one
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normalised_path = (char *)emalloc(PATH_MAX);
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module_name = (char *)emalloc(PATH_MAX);
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v8js_commonjs_normalise_identifier(c->modules_base.back(), module_id, normalised_path, module_name);
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}
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else {
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// Call custom normaliser
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int call_result;
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zval params[2];
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zval normaliser_result;
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zend_try {
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{
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isolate->Exit();
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v8::Unlocker unlocker(isolate);
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ZVAL_STRING(¶ms[0], c->modules_base.back());
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ZVAL_STRING(¶ms[1], module_id);
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call_result = call_user_function_ex(EG(function_table), NULL, &c->module_normaliser,
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&normaliser_result, 2, params, 0, NULL);
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}
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isolate->Enter();
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if (call_result == FAILURE) {
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info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Module normaliser callback failed")));
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}
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}
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zend_catch {
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v8js_terminate_execution(isolate);
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V8JSG(fatal_error_abort) = 1;
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call_result = FAILURE;
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}
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zend_end_try();
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zval_ptr_dtor(¶ms[0]);
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zval_ptr_dtor(¶ms[1]);
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if(call_result == FAILURE) {
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return;
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}
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// Check if an exception was thrown
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if (EG(exception)) {
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// Clear the PHP exception and throw it in V8 instead
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zend_clear_exception(TSRMLS_C);
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info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Module normaliser callback exception")));
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return;
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}
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if (Z_TYPE(normaliser_result) != IS_ARRAY) {
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zval_ptr_dtor(&normaliser_result);
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info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Module normaliser didn't return an array")));
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return;
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}
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HashTable *ht = HASH_OF(&normaliser_result);
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int num_elements = zend_hash_num_elements(ht);
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if(num_elements != 2) {
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zval_ptr_dtor(&normaliser_result);
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info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Module normaliser expected to return array of 2 strings")));
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return;
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}
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zval *data;
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ulong index = 0;
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ZEND_HASH_FOREACH_VAL(ht, data) {
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if (Z_TYPE_P(data) != IS_STRING) {
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convert_to_string(data);
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}
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switch(index++) {
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case 0: // normalised path
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normalised_path = estrndup(Z_STRVAL_P(data), Z_STRLEN_P(data));
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break;
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case 1: // normalised module id
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module_name = estrndup(Z_STRVAL_P(data), Z_STRLEN_P(data));
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break;
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}
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}
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ZEND_HASH_FOREACH_END();
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zval_ptr_dtor(&normaliser_result);
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}
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char *normalised_module_id = (char *)emalloc(strlen(normalised_path)+1+strlen(module_name)+1);
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*normalised_module_id = 0;
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if (strlen(normalised_path) > 0) {
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strcat(normalised_module_id, normalised_path);
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strcat(normalised_module_id, "/");
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}
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strcat(normalised_module_id, module_name);
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efree(module_name);
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// Check for module cyclic dependencies
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for (std::vector<char *>::iterator it = c->modules_stack.begin(); it != c->modules_stack.end(); ++it)
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{
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if (!strcmp(*it, normalised_module_id)) {
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efree(normalised_module_id);
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efree(normalised_path);
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info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Module cyclic dependency")));
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return;
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}
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}
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// If we have already loaded and cached this module then use it
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if (c->modules_loaded.count(normalised_module_id) > 0) {
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v8::Persistent<v8::Object> newobj;
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newobj.Reset(isolate, c->modules_loaded[normalised_module_id]);
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info.GetReturnValue().Set(newobj);
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efree(normalised_module_id);
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efree(normalised_path);
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return;
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}
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// Callback to PHP to load the module code
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zval module_code;
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int call_result;
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zval params[1];
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{
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isolate->Exit();
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v8::Unlocker unlocker(isolate);
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zend_try {
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ZVAL_STRING(¶ms[0], normalised_module_id);
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call_result = call_user_function_ex(EG(function_table), NULL, &c->module_loader, &module_code, 1, params, 0, NULL);
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}
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zend_catch {
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v8js_terminate_execution(isolate);
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V8JSG(fatal_error_abort) = 1;
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}
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zend_end_try();
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}
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isolate->Enter();
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if (V8JSG(fatal_error_abort)) {
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call_result = FAILURE;
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}
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else if (call_result == FAILURE) {
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info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Module loader callback failed")));
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}
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zval_ptr_dtor(¶ms[0]);
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if (call_result == FAILURE) {
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efree(normalised_module_id);
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efree(normalised_path);
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return;
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}
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// Check if an exception was thrown
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if (EG(exception)) {
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efree(normalised_module_id);
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efree(normalised_path);
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// Clear the PHP exception and throw it in V8 instead
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zend_clear_exception(TSRMLS_C);
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info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Module loader callback exception")));
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return;
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}
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// Convert the return value to string
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if (Z_TYPE(module_code) != IS_STRING) {
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convert_to_string(&module_code);
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}
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// Create a template for the global object and set the built-in global functions
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v8::Local<v8::ObjectTemplate> global_template = v8::ObjectTemplate::New();
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global_template->Set(V8JS_SYM("print"), v8::FunctionTemplate::New(isolate, V8JS_MN(print)), v8::ReadOnly);
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global_template->Set(V8JS_SYM("var_dump"), v8::FunctionTemplate::New(isolate, V8JS_MN(var_dump)), v8::ReadOnly);
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global_template->Set(V8JS_SYM("sleep"), v8::FunctionTemplate::New(isolate, V8JS_MN(sleep)), v8::ReadOnly);
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global_template->Set(V8JS_SYM("require"), v8::FunctionTemplate::New(isolate, V8JS_MN(require), v8::External::New(isolate, c)), v8::ReadOnly);
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// Add the exports object in which the module can return its API
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v8::Local<v8::ObjectTemplate> exports_template = v8::ObjectTemplate::New();
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global_template->Set(V8JS_SYM("exports"), exports_template);
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// Add the module object in which the module can have more fine-grained control over what it can return
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v8::Local<v8::ObjectTemplate> module_template = v8::ObjectTemplate::New();
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module_template->Set(V8JS_SYM("id"), V8JS_STR(normalised_module_id));
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global_template->Set(V8JS_SYM("module"), module_template);
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// Each module gets its own context so different modules do not affect each other
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v8::Local<v8::Context> context = v8::Local<v8::Context>::New(isolate, v8::Context::New(isolate, NULL, global_template));
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// Catch JS exceptions
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v8::TryCatch try_catch;
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v8::Locker locker(isolate);
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v8::Isolate::Scope isolate_scope(isolate);
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v8::HandleScope handle_scope(isolate);
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// Enter the module context
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v8::Context::Scope scope(context);
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// Set script identifier
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v8::Local<v8::String> sname = V8JS_STR(normalised_module_id);
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if (Z_STRLEN(module_code) > std::numeric_limits<int>::max()) {
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zend_throw_exception(php_ce_v8js_exception,
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"Module code size exceeds maximum supported length", 0);
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return;
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}
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v8::Local<v8::String> source = V8JS_STRL(Z_STRVAL(module_code), static_cast<int>(Z_STRLEN(module_code)));
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zval_ptr_dtor(&module_code);
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// Create and compile script
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v8::Local<v8::Script> script = v8::Script::Compile(source, sname);
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// The script will be empty if there are compile errors
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if (script.IsEmpty()) {
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efree(normalised_module_id);
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efree(normalised_path);
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info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Module script compile failed")));
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return;
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}
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// Add this module and path to the stack
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c->modules_stack.push_back(normalised_module_id);
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c->modules_base.push_back(normalised_path);
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// Run script
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script->Run();
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// Remove this module and path from the stack
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c->modules_stack.pop_back();
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c->modules_base.pop_back();
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efree(normalised_path);
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// Script possibly terminated, return immediately
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if (!try_catch.CanContinue()) {
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info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Module script compile failed")));
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efree(normalised_module_id);
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return;
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}
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// Handle runtime JS exceptions
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if (try_catch.HasCaught()) {
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// Rethrow the exception back to JS
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info.GetReturnValue().Set(try_catch.ReThrow());
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efree(normalised_module_id);
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return;
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}
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v8::Local<v8::Object> newobj;
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// Cache the module so it doesn't need to be compiled and run again
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// Ensure compatibility with CommonJS implementations such as NodeJS by playing nicely with module.exports and exports
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if (context->Global()->Has(V8JS_SYM("module"))
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&& context->Global()->Get(V8JS_SYM("module"))->IsObject()
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&& context->Global()->Get(V8JS_SYM("module"))->ToObject()->Has(V8JS_SYM("exports"))
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&& context->Global()->Get(V8JS_SYM("module"))->ToObject()->Get(V8JS_SYM("exports"))->IsObject()) {
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// If module.exports has been set then we cache this arbitrary value...
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newobj = context->Global()->Get(V8JS_SYM("module"))->ToObject()->Get(V8JS_SYM("exports"))->ToObject();
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} else {
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// ...otherwise we cache the exports object itself
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newobj = context->Global()->Get(V8JS_SYM("exports"))->ToObject();
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}
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|
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c->modules_loaded[normalised_module_id].Reset(isolate, newobj);
|
||
info.GetReturnValue().Set(newobj);
|
||
}
|
||
|
||
void v8js_register_methods(v8::Local<v8::ObjectTemplate> global, v8js_ctx *c) /* {{{ */
|
||
{
|
||
v8::Isolate *isolate = c->isolate;
|
||
global->Set(V8JS_SYM("exit"), v8::FunctionTemplate::New(isolate, V8JS_MN(exit)), v8::ReadOnly);
|
||
global->Set(V8JS_SYM("sleep"), v8::FunctionTemplate::New(isolate, V8JS_MN(sleep)), v8::ReadOnly);
|
||
global->Set(V8JS_SYM("print"), v8::FunctionTemplate::New(isolate, V8JS_MN(print)), v8::ReadOnly);
|
||
global->Set(V8JS_SYM("var_dump"), v8::FunctionTemplate::New(isolate, V8JS_MN(var_dump)), v8::ReadOnly);
|
||
|
||
c->modules_base.push_back("");
|
||
global->Set(V8JS_SYM("require"), v8::FunctionTemplate::New(isolate, V8JS_MN(require), v8::External::New(isolate, c)), v8::ReadOnly);
|
||
}
|
||
/* }}} */
|
||
|
||
/*
|
||
* Local variables:
|
||
* tab-width: 4
|
||
* c-basic-offset: 4
|
||
* indent-tabs-mode: t
|
||
* End:
|
||
* vim600: noet sw=4 ts=4 fdm=marker
|
||
* vim<600: noet sw=4 ts=4
|
||
*/
|