php-src/Zend/zend_API.c
Zeev Suraski 2a6da7814c Step 4:
Move to a 7-bit counter (not fully implemented yet)
1999-07-09 20:43:59 +00:00

768 lines
20 KiB
C

/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998, 1999 Andi Gutmans, Zeev Suraski |
+----------------------------------------------------------------------+
| This source file is subject to the Zend license, that is bundled |
| with this package in the file LICENSE. If you did not receive a |
| copy of the Zend license, please mail us at zend@zend.com so we can |
| send you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
#include "zend.h"
#include "zend_variables.h"
#include "zend_execute.h"
#include "zend_API.h"
#include "modules.h"
#include "zend_constants.h"
#include "zend_operators.h"
#if HAVE_STDARG_H
#include <stdarg.h>
#endif
/* these variables are true statics/globals, and have to be mutex'ed on every access */
static int module_count=0;
HashTable list_destructors, module_registry;
/* this function doesn't check for too many parameters */
ZEND_API int getParameters(int ht, int param_count,...)
{
void **p;
int arg_count;
va_list ptr;
zval **param, *param_ptr;
ELS_FETCH();
ALS_FETCH();
p = EG(argument_stack).top_element-1;
arg_count = (ulong) *p;
if (param_count>arg_count) {
return FAILURE;
}
va_start(ptr, param_count);
while (param_count>0) {
param = va_arg(ptr, zval **);
param_ptr = *(p-param_count);
if (!PZVAL_IS_REF(param_ptr) && param_ptr->refcount>1) {
zval *new_tmp;
new_tmp = (zval *) emalloc(sizeof(zval));
*new_tmp = *param_ptr;
zval_copy_ctor(new_tmp);
INIT_PZVAL(new_tmp);
param_ptr = new_tmp;
((zval *) *(p-param_count))->refcount--;
*(p-param_count) = param_ptr;
}
*param = param_ptr;
param_count--;
}
va_end(ptr);
return SUCCESS;
}
ZEND_API int getParametersArray(int ht, int param_count, zval **argument_array)
{
void **p;
int arg_count;
zval *param_ptr;
ELS_FETCH();
p = EG(argument_stack).top_element-1;
arg_count = (ulong) *p;
if (param_count>arg_count) {
return FAILURE;
}
while (param_count>0) {
param_ptr = *(p-param_count);
if (!PZVAL_IS_REF(param_ptr) && param_ptr->refcount>1) {
zval *new_tmp;
new_tmp = (zval *) emalloc(sizeof(zval));
*new_tmp = *param_ptr;
zval_copy_ctor(new_tmp);
INIT_PZVAL(new_tmp);
param_ptr = new_tmp;
((zval *) *(p-param_count))->refcount--;
*(p-param_count) = param_ptr;
}
*(argument_array++) = param_ptr;
param_count--;
}
return SUCCESS;
}
/* Zend-optimized Extended functions */
/* this function doesn't check for too many parameters */
ZEND_API int getParametersEx(int param_count,...)
{
void **p;
int arg_count;
va_list ptr;
zval ***param;
ELS_FETCH();
p = EG(argument_stack).top_element-1;
arg_count = (ulong) *p;
if (param_count>arg_count) {
return FAILURE;
}
va_start(ptr, param_count);
while (param_count>0) {
param = va_arg(ptr, zval ***);
*param = (zval **) p-(param_count--);
}
va_end(ptr);
return SUCCESS;
}
ZEND_API int getParametersArrayEx(int param_count, zval ***argument_array)
{
void **p;
int arg_count;
ELS_FETCH();
p = EG(argument_stack).top_element-1;
arg_count = (ulong) *p;
if (param_count>arg_count) {
return FAILURE;
}
while (param_count>0) {
*(argument_array++) = (zval **) p-(param_count--);
}
return SUCCESS;
}
ZEND_API int ParameterPassedByReference(int ht, uint n)
{
void **p;
ulong arg_count;
zval *arg;
ELS_FETCH();
p = EG(argument_stack).elements+EG(argument_stack).top-1;
arg_count = (ulong) *p;
if (n>arg_count) {
return FAILURE;
}
arg = (zval *) *(p-arg_count+n-1);
return PZVAL_IS_REF(arg);
}
ZEND_API void wrong_param_count()
{
zend_error(E_WARNING,"Wrong parameter count for %s()",get_active_function_name());
}
ZEND_API inline int array_init(zval *arg)
{
arg->value.ht = (HashTable *) emalloc(sizeof(HashTable));
if (!arg->value.ht || zend_hash_init(arg->value.ht, 0, NULL, PVAL_PTR_DTOR, 0)) {
zend_error(E_CORE_ERROR, "Cannot allocate memory for array");
return FAILURE;
}
arg->type = IS_ARRAY;
return SUCCESS;
}
static void zval_update_const_and_ref(zval **p)
{
zval_update_constant(*p);
zval_add_ref(p);
}
ZEND_API inline int object_init_ex(zval *arg, zend_class_entry *class_type)
{
zval *tmp;
arg->value.obj.properties = (HashTable *) emalloc(sizeof(HashTable));
zend_hash_init(arg->value.obj.properties, 0, NULL, PVAL_PTR_DTOR, 0);
zend_hash_copy(arg->value.obj.properties, &class_type->default_properties, (void (*)(void *)) zval_update_const_and_ref, (void *) &tmp, sizeof(zval *));
arg->type = IS_OBJECT;
arg->value.obj.ce = class_type;
return SUCCESS;
}
ZEND_API inline int object_init(zval *arg)
{
return object_init_ex(arg, &zend_standard_class_def);
}
ZEND_API inline int add_assoc_long(zval *arg, char *key, long n)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_LONG;
tmp->value.lval = n;
INIT_PZVAL(tmp);
return zend_hash_update(arg->value.ht, key, strlen(key)+1, (void *) &tmp, sizeof(zval *), NULL);
}
ZEND_API inline int add_assoc_double(zval *arg, char *key, double d)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_DOUBLE;
tmp->value.dval = d;
INIT_PZVAL(tmp);
return zend_hash_update(arg->value.ht, key, strlen(key)+1, (void *) &tmp, sizeof(zval *), NULL);
}
ZEND_API inline int add_assoc_string(zval *arg, char *key, char *str, int duplicate)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_STRING;
tmp->value.str.len = strlen(str);
if (duplicate) {
tmp->value.str.val = estrndup(str,tmp->value.str.len);
} else {
tmp->value.str.val = str;
}
INIT_PZVAL(tmp);
return zend_hash_update(arg->value.ht, key, strlen(key)+1, (void *) &tmp, sizeof(zval *), NULL);
}
ZEND_API inline int add_assoc_stringl(zval *arg, char *key, char *str, uint length, int duplicate)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_STRING;
tmp->value.str.len = length;
if (duplicate) {
tmp->value.str.val = estrndup(str,tmp->value.str.len);
} else {
tmp->value.str.val = str;
}
INIT_PZVAL(tmp);
return zend_hash_update(arg->value.ht, key, strlen(key)+1, (void *) &tmp, sizeof(zval *), NULL);
}
ZEND_API inline int add_assoc_function(zval *arg, char *key,void (*function_ptr)(INTERNAL_FUNCTION_PARAMETERS))
{
zend_error(E_WARNING, "add_assoc_function() is no longer supported");
return FAILURE;
}
ZEND_API inline int add_index_long(zval *arg, uint index, long n)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_LONG;
tmp->value.lval = n;
INIT_PZVAL(tmp);
return zend_hash_index_update(arg->value.ht, index, (void *) &tmp, sizeof(zval *),NULL);
}
ZEND_API inline int add_index_double(zval *arg, uint index, double d)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_DOUBLE;
tmp->value.dval = d;
INIT_PZVAL(tmp);
return zend_hash_index_update(arg->value.ht, index, (void *) &tmp, sizeof(zval *),NULL);
}
ZEND_API inline int add_index_string(zval *arg, uint index, char *str, int duplicate)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_STRING;
tmp->value.str.len = strlen(str);
if (duplicate) {
tmp->value.str.val = estrndup(str,tmp->value.str.len);
} else {
tmp->value.str.val = str;
}
INIT_PZVAL(tmp);
return zend_hash_index_update(arg->value.ht, index, (void *) &tmp, sizeof(zval *), NULL);
}
ZEND_API inline int add_index_stringl(zval *arg, uint index, char *str, uint length, int duplicate)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_STRING;
tmp->value.str.len = length;
if (duplicate) {
tmp->value.str.val = estrndup(str,tmp->value.str.len);
} else {
tmp->value.str.val = str;
}
INIT_PZVAL(tmp);
return zend_hash_index_update(arg->value.ht, index, (void *) &tmp, sizeof(zval *),NULL);
}
ZEND_API inline int add_next_index_long(zval *arg, long n)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_LONG;
tmp->value.lval = n;
INIT_PZVAL(tmp);
return zend_hash_next_index_insert(arg->value.ht, &tmp, sizeof(zval *), NULL);
}
ZEND_API inline int add_next_index_double(zval *arg, double d)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_DOUBLE;
tmp->value.dval = d;
INIT_PZVAL(tmp);
return zend_hash_next_index_insert(arg->value.ht, &tmp, sizeof(zval *), NULL);
}
ZEND_API inline int add_next_index_string(zval *arg, char *str, int duplicate)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_STRING;
tmp->value.str.len = strlen(str);
if (duplicate) {
tmp->value.str.val = estrndup(str,tmp->value.str.len);
} else {
tmp->value.str.val = str;
}
INIT_PZVAL(tmp);
return zend_hash_next_index_insert(arg->value.ht, &tmp, sizeof(zval *),NULL);
}
ZEND_API inline int add_next_index_stringl(zval *arg, char *str, uint length, int duplicate)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_STRING;
tmp->value.str.len = length;
if (duplicate) {
tmp->value.str.val = estrndup(str,tmp->value.str.len);
} else {
tmp->value.str.val = str;
}
INIT_PZVAL(tmp);
return zend_hash_next_index_insert(arg->value.ht, &tmp, sizeof(zval *),NULL);
}
ZEND_API inline int add_get_assoc_string(zval *arg, char *key, char *str, void **dest, int duplicate)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_STRING;
tmp->value.str.len = strlen(str);
if (duplicate) {
tmp->value.str.val = estrndup(str,tmp->value.str.len);
} else {
tmp->value.str.val = str;
}
INIT_PZVAL(tmp);
return zend_hash_update(arg->value.ht, key, strlen(key)+1, (void *) &tmp, sizeof(zval *), dest);
}
ZEND_API inline int add_get_assoc_stringl(zval *arg, char *key, char *str, uint length, void **dest, int duplicate)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_STRING;
tmp->value.str.len = length;
if (duplicate) {
tmp->value.str.val = estrndup(str,tmp->value.str.len);
} else {
tmp->value.str.val = str;
}
INIT_PZVAL(tmp);
return zend_hash_update(arg->value.ht, key, strlen(key)+1, (void *) &tmp, sizeof(zval *), dest);
}
ZEND_API inline int add_get_index_long(zval *arg, uint index, long l, void **dest)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_LONG;
tmp->value.lval = l;
INIT_PZVAL(tmp);
return zend_hash_index_update(arg->value.ht, index, (void *) &tmp, sizeof(zval *),dest);
}
ZEND_API inline int add_get_index_double(zval *arg, uint index, double d, void **dest)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_DOUBLE;
tmp->value.dval= d;
INIT_PZVAL(tmp);
return zend_hash_index_update(arg->value.ht, index, (void *) &tmp, sizeof(zval *),dest);
}
ZEND_API inline int add_get_index_string(zval *arg, uint index, char *str, void **dest, int duplicate)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_STRING;
tmp->value.str.len = strlen(str);
if (duplicate) {
tmp->value.str.val = estrndup(str,tmp->value.str.len);
} else {
tmp->value.str.val = str;
}
INIT_PZVAL(tmp);
return zend_hash_index_update(arg->value.ht, index, (void *) &tmp, sizeof(zval *),dest);
}
ZEND_API inline int add_get_index_stringl(zval *arg, uint index, char *str, uint length, void **dest, int duplicate)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_STRING;
tmp->value.str.len = length;
if (duplicate) {
tmp->value.str.val = estrndup(str,tmp->value.str.len);
} else {
tmp->value.str.val = str;
}
INIT_PZVAL(tmp);
return zend_hash_index_update(arg->value.ht, index, (void *) &tmp, sizeof(zval *),dest);
}
ZEND_API inline int add_property_long(zval *arg, char *key, long n)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_LONG;
tmp->value.lval = n;
INIT_PZVAL(tmp);
return zend_hash_update(arg->value.obj.properties, key, strlen(key)+1, (void *) &tmp, sizeof(zval *), NULL);
}
ZEND_API inline int add_property_double(zval *arg, char *key, double d)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_DOUBLE;
tmp->value.dval = d;
INIT_PZVAL(tmp);
return zend_hash_update(arg->value.obj.properties, key, strlen(key)+1, (void *) &tmp, sizeof(zval *), NULL);
}
ZEND_API inline int add_property_string(zval *arg, char *key, char *str, int duplicate)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_STRING;
tmp->value.str.len = strlen(str);
if (duplicate) {
tmp->value.str.val = estrndup(str,tmp->value.str.len);
} else {
tmp->value.str.val = str;
}
INIT_PZVAL(tmp);
return zend_hash_update(arg->value.obj.properties, key, strlen(key)+1, (void *) &tmp, sizeof(zval *), NULL);
}
ZEND_API inline int add_property_stringl(zval *arg, char *key, char *str, uint length, int duplicate)
{
zval *tmp = (zval *) emalloc(sizeof(zval));
tmp->type = IS_STRING;
tmp->value.str.len = length;
if (duplicate) {
tmp->value.str.val = estrndup(str,tmp->value.str.len);
} else {
tmp->value.str.val = str;
}
INIT_PZVAL(tmp);
return zend_hash_update(arg->value.obj.properties, key, strlen(key)+1, (void *) &tmp, sizeof(zval *), NULL);
}
int zend_startup_module(zend_module_entry *module)
{
if (module) {
module->module_number = zend_next_free_module();
if (module->module_startup_func) {
if (module->module_startup_func(MODULE_PERSISTENT, module->module_number)==FAILURE) {
zend_error(E_CORE_ERROR,"Unable to start %s module",module->name);
return FAILURE;
}
}
module->type = MODULE_PERSISTENT;
zend_register_module(module);
}
return SUCCESS;
}
ZEND_API int _register_list_destructors(void (*list_destructor)(void *), void (*plist_destructor)(void *), int module_number)
{
list_destructors_entry ld;
#if 0
printf("Registering destructors %d for module %d\n", list_destructors.nNextFreeElement, module_number);
#endif
ld.list_destructor=(void (*)(void *)) list_destructor;
ld.plist_destructor=(void (*)(void *)) plist_destructor;
ld.module_number = module_number;
ld.resource_id = list_destructors.nNextFreeElement;
if (zend_hash_next_index_insert(&list_destructors,(void *) &ld,sizeof(list_destructors_entry),NULL)==FAILURE) {
return FAILURE;
}
return list_destructors.nNextFreeElement-1;
}
/* registers all functions in *library_functions in the function hash */
int zend_register_functions(zend_function_entry *functions, HashTable *function_table)
{
zend_function_entry *ptr = functions;
zend_internal_function internal_function;
int count=0,unload=0;
HashTable *target_function_table = function_table;
CLS_FETCH();
if (!target_function_table) {
target_function_table = CG(function_table);
}
internal_function.type = ZEND_INTERNAL_FUNCTION;
while (ptr->fname) {
internal_function.handler = ptr->handler;
internal_function.arg_types = ptr->func_arg_types;
internal_function.function_name = ptr->fname;
if (!internal_function.handler) {
zend_error(E_CORE_WARNING,"Null function defined as active function");
zend_unregister_functions(functions, count, target_function_table);
return FAILURE;
}
if (zend_hash_add(target_function_table, ptr->fname, strlen(ptr->fname)+1, &internal_function, sizeof(zend_internal_function), NULL) == FAILURE) {
unload=1;
break;
}
ptr++;
count++;
}
if (unload) { /* before unloading, display all remaining bad function in the module */
while (ptr->fname) {
if (zend_hash_exists(target_function_table, ptr->fname, strlen(ptr->fname)+1)) {
zend_error(E_CORE_WARNING, "Function registration failed - duplicate name - %s",ptr->fname);
}
ptr++;
}
zend_unregister_functions(functions, count, target_function_table);
return FAILURE;
}
return SUCCESS;
}
/* count=-1 means erase all functions, otherwise,
* erase the first count functions
*/
void zend_unregister_functions(zend_function_entry *functions, int count, HashTable *function_table)
{
zend_function_entry *ptr = functions;
int i=0;
HashTable *target_function_table = function_table;
CLS_FETCH();
if (!target_function_table) {
target_function_table = CG(function_table);
}
while (ptr->fname) {
if (count!=-1 && i>=count) {
break;
}
#if 0
zend_printf("Unregistering %s()\n", ptr->fname);
#endif
zend_hash_del(target_function_table, ptr->fname, strlen(ptr->fname)+1);
ptr++;
i++;
}
}
ZEND_API int zend_register_module(zend_module_entry *module)
{
#if 0
zend_printf("%s: Registering module %d\n",module->name, module->module_number);
#endif
if (module->functions && zend_register_functions(module->functions, NULL)==FAILURE) {
zend_error(E_CORE_WARNING,"%s: Unable to register functions, unable to load",module->name);
return FAILURE;
}
module->module_started=1;
return zend_hash_add(&module_registry, module->name,strlen(module->name)+1,(void *)module,sizeof(zend_module_entry),NULL);
}
void module_destructor(zend_module_entry *module)
{
if (module->type == MODULE_TEMPORARY) {
zend_hash_apply_with_argument(&list_destructors, (int (*)(void *,void *)) clean_module_resource_destructors, (void *) &(module->module_number));
clean_module_constants(module->module_number);
}
if (module->request_started && module->request_shutdown_func) {
#if 0
zend_printf("%s: Request shutdown\n",module->name);
#endif
module->request_shutdown_func(module->type, module->module_number);
}
module->request_started=0;
if (module->module_started && module->module_shutdown_func) {
#if 0
zend_printf("%s: Module shutdown\n",module->name);
#endif
module->module_shutdown_func(module->type, module->module_number);
}
module->module_started=0;
if (module->functions) {
zend_unregister_functions(module->functions, -1, NULL);
}
#if HAVE_LIBDL
if (module->handle) {
dlclose(module->handle);
}
#endif
}
/* call request startup for all modules */
int module_registry_request_startup(zend_module_entry *module)
{
if (!module->request_started && module->request_startup_func) {
#if 0
zend_printf("%s: Request startup\n",module->name);
#endif
module->request_startup_func(module->type, module->module_number);
}
module->request_started=1;
return 0;
}
/* for persistent modules - call request shutdown and flag NOT to erase
* for temporary modules - do nothing, and flag to erase
*/
int module_registry_cleanup(zend_module_entry *module)
{
switch(module->type) {
case MODULE_PERSISTENT:
if (module->request_started && module->request_shutdown_func) {
#if 0
zend_printf("%s: Request shutdown\n",module->name);
#endif
module->request_shutdown_func(module->type, module->module_number);
}
module->request_started=0;
return 0;
break;
case MODULE_TEMPORARY:
return 1;
break;
}
return 0;
}
/* return the next free module number */
int zend_next_free_module(void)
{
return ++module_count;
}
ZEND_API zend_class_entry *register_internal_class(zend_class_entry *class_entry)
{
zend_class_entry *register_class;
char *lowercase_name = zend_strndup(class_entry->name, class_entry->name_length);
CLS_FETCH();
zend_str_tolower(lowercase_name, class_entry->name_length);
class_entry->type = ZEND_INTERNAL_CLASS;
class_entry->parent = NULL;
class_entry->refcount = (int *) malloc(sizeof(int));
*class_entry->refcount = 1;
zend_hash_init(&class_entry->default_properties, 0, NULL, PVAL_PTR_DTOR, 1);
zend_hash_init(&class_entry->function_table, 0, NULL, ZEND_FUNCTION_DTOR, 1);
zend_hash_update(CG(class_table), lowercase_name, class_entry->name_length+1, class_entry, sizeof(zend_class_entry), (void **) &register_class);
free(lowercase_name);
if (class_entry->builtin_functions) {
zend_register_functions(class_entry->builtin_functions, &class_entry->function_table);
}
return register_class;
}
ZEND_API zend_module_entry *zend_get_module(int module_number)
{
zend_module_entry *module;
if (zend_hash_index_find(&module_registry, module_number, (void **) &module)==SUCCESS) {
return module;
} else {
return NULL;
}
}