mirror of
https://github.com/phpv8/v8js.git
synced 2025-01-03 19:11:53 +00:00
Don't use zend_string for registerExtension- It may be freed
... before module shutdown (In NTS builds of PHP 7 (e.g. 7.0.9) only) Fixes https://github.com/phpv8/v8js/issues/247 This no longer returns getExtensions() in the order in which they were registered. This is slightly wasteful of memory - A custom hash function and equality for `const char*` might be possible.
This commit is contained in:
Tyson Andre
Tyson Andre
parent
4161008417
commit
a612ce9bdc
@ -27,6 +27,7 @@
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#include <list>
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#include <vector>
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#include <mutex>
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#include <unordered_map>
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#include <cmath>
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#ifndef isnan
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@ -77,7 +78,6 @@ extern "C" {
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#define ZEND_SLEEP_FUNC_NAME "__sleep"
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#define ZEND_SET_STATE_FUNC_NAME "__set_state"
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/* Convert zval into V8 value */
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v8::Handle<v8::Value> zval_to_v8js(zval *, v8::Isolate * TSRMLS_DC);
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@ -97,8 +97,10 @@ void v8js_register_accessors(std::vector<v8js_accessor_ctx*> *accessor_list, v8:
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/* Forward declarations */
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struct v8js_jsext;
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struct v8js_timer_ctx;
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/* Module globals */
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ZEND_BEGIN_MODULE_GLOBALS(v8js)
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// Thread-local cache whether V8 has been initialized so far
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@ -145,7 +147,7 @@ struct _v8js_process_globals {
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std::mutex lock;
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#endif
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HashTable *extensions;
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std::unordered_map<std::string, v8js_jsext*> extensions;
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/* V8 command line flags */
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char *v8_flags;
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7
v8js.cc
7
v8js.cc
@ -163,11 +163,10 @@ static PHP_MSHUTDOWN_FUNCTION(v8js)
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v8js_process_globals.v8_flags = NULL;
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}
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if (v8js_process_globals.extensions) {
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zend_hash_destroy(v8js_process_globals.extensions);
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free(v8js_process_globals.extensions);
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v8js_process_globals.extensions = NULL;
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for (auto& it: v8js_process_globals.extensions) {
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v8js_jsext_free_storage(it.second);
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}
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v8js_process_globals.extensions.clear();
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return SUCCESS;
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}
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@ -18,6 +18,8 @@
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#include <functional>
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#include <algorithm>
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#include <string>
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#include <unordered_map>
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#include "php_v8js_macros.h"
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#include "v8js_v8.h"
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@ -62,11 +64,10 @@ int le_v8js_script;
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/* {{{ Extension container */
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struct v8js_jsext {
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zend_bool auto_enable;
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HashTable *deps_ht;
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const char **deps;
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int deps_count;
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zend_string *name;
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zend_string *source;
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const char *name;
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const char *source;
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v8::Extension *extension;
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};
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/* }}} */
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@ -260,29 +261,19 @@ static void v8js_free_ext_strarr(const char **arr, int count) /* {{{ */
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}
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/* }}} */
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static void v8js_jsext_free_storage(v8js_jsext *jsext) /* {{{ */
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void v8js_jsext_free_storage(v8js_jsext *jsext) /* {{{ */
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{
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if (jsext->deps_ht) {
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zend_hash_destroy(jsext->deps_ht);
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free(jsext->deps_ht);
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}
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if (jsext->deps) {
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v8js_free_ext_strarr(jsext->deps, jsext->deps_count);
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}
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delete jsext->extension;
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zend_string_release(jsext->name);
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zend_string_release(jsext->source);
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free((char*) jsext->name);
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free((char*) jsext->source);
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free(jsext);
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}
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/* }}} */
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static void v8js_jsext_dtor(zval *zv) /* {{{ */
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{
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v8js_jsext_free_storage(reinterpret_cast<v8js_jsext *>(Z_PTR_P(zv)));
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}
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/* }}} */
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static int v8js_create_ext_strarr(const char ***retval, int count, HashTable *ht) /* {{{ */
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{
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const char **exts = NULL;
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@ -897,13 +888,6 @@ static void v8js_persistent_zval_ctor(zval *p) /* {{{ */
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}
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/* }}} */
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static void v8js_persistent_zval_dtor(zval *p) /* {{{ */
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{
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assert(Z_TYPE_P(p) == IS_STRING);
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free(Z_STR_P(p));
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}
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/* }}} */
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static void v8js_script_free(v8js_script *res)
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{
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efree(res->name);
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@ -925,18 +909,24 @@ static void v8js_script_dtor(zend_resource *rsrc) /* {{{ */
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}
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/* }}} */
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static char* zend_string_to_new_cstring(zend_string *string) { /* {{{ */
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char* s = (char*) malloc(ZSTR_LEN(string) + 1);
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memcpy(s, ZSTR_VAL(string), ZSTR_LEN(string));
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s[ZSTR_LEN(string)] = '\0';
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return s;
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}
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/* }}} */
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static int v8js_register_extension(zend_string *name, zend_string *source, zval *deps_arr, zend_bool auto_enable TSRMLS_DC) /* {{{ */
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{
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v8js_jsext *jsext = NULL;
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std::string key(ZSTR_VAL(name), ZSTR_LEN(name));
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#ifdef ZTS
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v8js_process_globals.lock.lock();
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#endif
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if (!v8js_process_globals.extensions) {
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v8js_process_globals.extensions = (HashTable *) malloc(sizeof(HashTable));
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zend_hash_init(v8js_process_globals.extensions, 1, NULL, v8js_jsext_dtor, 1);
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} else if (zend_hash_exists(v8js_process_globals.extensions, name)) {
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if (v8js_process_globals.extensions.find(key) != v8js_process_globals.extensions.end()) {
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#ifdef ZTS
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v8js_process_globals.lock.unlock();
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#endif
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@ -959,24 +949,15 @@ static int v8js_register_extension(zend_string *name, zend_string *source, zval
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}
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jsext->auto_enable = auto_enable;
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jsext->name = zend_string_dup(name, 1);
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jsext->source = zend_string_dup(source, 1);
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// TODO helper method
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// Allocate character pointers, which need to outlive the allocated v8::Extension
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jsext->name = zend_string_to_new_cstring(name);
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jsext->source = zend_string_to_new_cstring(source);
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if (jsext->deps) {
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jsext->deps_ht = (HashTable *) malloc(sizeof(HashTable));
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zend_hash_init(jsext->deps_ht, jsext->deps_count, NULL, v8js_persistent_zval_dtor, 1);
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zend_hash_copy(jsext->deps_ht, Z_ARRVAL_P(deps_arr), v8js_persistent_zval_ctor);
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}
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// TODO: custom comparators
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jsext->extension = new v8::Extension(jsext->name, jsext->source, jsext->deps_count, jsext->deps);
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jsext->extension = new v8::Extension(ZSTR_VAL(jsext->name), ZSTR_VAL(jsext->source), jsext->deps_count, jsext->deps);
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if (!zend_hash_add_ptr(v8js_process_globals.extensions, jsext->name, jsext)) {
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v8js_jsext_free_storage(jsext);
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#ifdef ZTS
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v8js_process_globals.lock.unlock();
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#endif
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return FAILURE;
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}
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v8js_process_globals.extensions.insert(std::pair<std::string, v8js_jsext*>(key, jsext));
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#ifdef ZTS
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v8js_process_globals.lock.unlock();
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@ -1021,9 +1002,6 @@ static PHP_METHOD(V8Js, registerExtension)
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static PHP_METHOD(V8Js, getExtensions)
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{
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v8js_jsext *jsext;
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ulong index;
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zend_string *key;
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zval *val, ext;
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if (zend_parse_parameters_none() == FAILURE) {
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return;
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@ -1035,21 +1013,25 @@ static PHP_METHOD(V8Js, getExtensions)
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v8js_process_globals.lock.lock();
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#endif
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if (v8js_process_globals.extensions) {
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ZEND_HASH_FOREACH_KEY_VAL(v8js_process_globals.extensions, index, key, val) {
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if (key) {
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jsext = (v8js_jsext *) Z_PTR_P(val);
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if (v8js_process_globals.extensions.size() > 0) {
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for (auto &it: v8js_process_globals.extensions) {
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zval ext;
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jsext = it.second;
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array_init(&ext);
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add_assoc_bool_ex(&ext, ZEND_STRL("auto_enable"), jsext->auto_enable);
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if (jsext->deps_ht) {
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if (jsext->deps) {
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zval deps_arr;
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array_init(&deps_arr);
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zend_hash_copy(Z_ARRVAL_P(&deps_arr), jsext->deps_ht, (copy_ctor_func_t) zval_add_ref);
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int i;
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array_init_size(&deps_arr, jsext->deps_count);
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for (i = 0; i < jsext->deps_count; i++) {
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zval z;
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ZVAL_STRING(&z, jsext->deps[i]);
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zend_hash_next_index_insert(Z_ARRVAL_P(&deps_arr), &z);
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}
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add_assoc_zval_ex(&ext, ZEND_STRL("deps"), &deps_arr);
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}
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add_assoc_zval_ex(return_value, ZSTR_VAL(key), ZSTR_LEN(key), &ext);
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add_assoc_zval_ex(return_value, it.first.data(), it.first.size(), &ext);
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}
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} ZEND_HASH_FOREACH_END();
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}
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#ifdef ZTS
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@ -15,6 +15,8 @@
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#ifndef V8JS_CLASS_H
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#define V8JS_CLASS_H
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/* Forward declarations */
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struct v8js_jsext;
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/* Abbreviate long type names */
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typedef v8::Persistent<v8::FunctionTemplate, v8::CopyablePersistentTraits<v8::FunctionTemplate> > v8js_tmpl_t;
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@ -88,6 +90,8 @@ struct v8js_ctx {
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# define V8JS_TSRMLS_FETCH()
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#endif
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void v8js_jsext_free_storage(v8js_jsext *jsext);
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static inline struct v8js_ctx *v8js_ctx_fetch_object(zend_object *obj) {
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return (struct v8js_ctx *)((char *)obj - XtOffsetOf(struct v8js_ctx, std));
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}
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