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zend_API.c
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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend 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.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <[email protected]> |
| Zeev Suraski <[email protected]> |
| Andrei Zmievski <[email protected]> |
| Dmitry Stogov <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "zend.h"
#include "zend_execute.h"
#include "zend_API.h"
#include "zend_modules.h"
#include "zend_extensions.h"
#include "zend_constants.h"
#include "zend_interfaces.h"
#include "zend_exceptions.h"
#include "zend_closures.h"
#include "zend_inheritance.h"
#include "zend_ini.h"
#include <stdarg.h>
/* these variables are true statics/globals, and have to be mutex'ed on every access */
ZEND_API HashTable module_registry;
static zend_module_entry **module_request_startup_handlers;
static zend_module_entry **module_request_shutdown_handlers;
static zend_module_entry **module_post_deactivate_handlers;
static zend_class_entry **class_cleanup_handlers;
ZEND_API int _zend_get_parameters_array_ex(int param_count, zval *argument_array) /* {{{ */
{
zval *param_ptr;
int arg_count;
param_ptr = ZEND_CALL_ARG(EG(current_execute_data), 1);
arg_count = ZEND_CALL_NUM_ARGS(EG(current_execute_data));
if (param_count>arg_count) {
return FAILURE;
}
while (param_count-->0) {
ZVAL_COPY_VALUE(argument_array, param_ptr);
argument_array++;
param_ptr++;
}
return SUCCESS;
}
/* }}} */
ZEND_API int zend_copy_parameters_array(int param_count, zval *argument_array) /* {{{ */
{
zval *param_ptr;
int arg_count;
param_ptr = ZEND_CALL_ARG(EG(current_execute_data), 1);
arg_count = ZEND_CALL_NUM_ARGS(EG(current_execute_data));
if (param_count>arg_count) {
return FAILURE;
}
while (param_count-->0) {
Z_TRY_ADDREF_P(param_ptr);
zend_hash_next_index_insert_new(Z_ARRVAL_P(argument_array), param_ptr);
param_ptr++;
}
return SUCCESS;
}
/* }}} */
ZEND_API ZEND_COLD void zend_wrong_param_count(void) /* {{{ */
{
const char *space;
const char *class_name = get_active_class_name(&space);
zend_argument_count_error("Wrong parameter count for %s%s%s()", class_name, space, get_active_function_name());
}
/* }}} */
/* Argument parsing API -- andrei */
ZEND_API const char *zend_get_type_by_const(int type) /* {{{ */
{
switch(type) {
case IS_FALSE:
case IS_TRUE:
case _IS_BOOL:
return "bool";
case IS_LONG:
return "int";
case IS_DOUBLE:
return "float";
case IS_STRING:
return "string";
case IS_OBJECT:
return "object";
case IS_RESOURCE:
return "resource";
case IS_NULL:
return "null";
case IS_CALLABLE:
return "callable";
case IS_ITERABLE:
return "iterable";
case IS_ARRAY:
return "array";
case IS_VOID:
return "void";
case IS_MIXED:
return "mixed";
case _IS_NUMBER:
return "number";
EMPTY_SWITCH_DEFAULT_CASE()
}
}
/* }}} */
ZEND_API const char *zend_zval_type_name(const zval *arg) /* {{{ */
{
ZVAL_DEREF(arg);
if (Z_ISUNDEF_P(arg)) {
return "null";
}
if (Z_TYPE_P(arg) == IS_OBJECT) {
return ZSTR_VAL(Z_OBJCE_P(arg)->name);
}
return zend_get_type_by_const(Z_TYPE_P(arg));
}
/* }}} */
/* This API exists *only* for use in gettype().
* For anything else, you likely want zend_zval_type_name(). */
ZEND_API zend_string *zend_zval_get_legacy_type(const zval *arg) /* {{{ */
{
switch (Z_TYPE_P(arg)) {
case IS_NULL:
return ZSTR_KNOWN(ZEND_STR_NULL);
case IS_FALSE:
case IS_TRUE:
return ZSTR_KNOWN(ZEND_STR_BOOLEAN);
case IS_LONG:
return ZSTR_KNOWN(ZEND_STR_INTEGER);
case IS_DOUBLE:
return ZSTR_KNOWN(ZEND_STR_DOUBLE);
case IS_STRING:
return ZSTR_KNOWN(ZEND_STR_STRING);
case IS_ARRAY:
return ZSTR_KNOWN(ZEND_STR_ARRAY);
case IS_OBJECT:
return ZSTR_KNOWN(ZEND_STR_OBJECT);
case IS_RESOURCE:
if (zend_rsrc_list_get_rsrc_type(Z_RES_P(arg))) {
return ZSTR_KNOWN(ZEND_STR_RESOURCE);
} else {
return ZSTR_KNOWN(ZEND_STR_CLOSED_RESOURCE);
}
default:
return NULL;
}
}
/* }}} */
ZEND_API ZEND_COLD int ZEND_FASTCALL zend_wrong_parameters_none_error(void) /* {{{ */
{
int num_args = ZEND_CALL_NUM_ARGS(EG(current_execute_data));
zend_function *active_function = EG(current_execute_data)->func;
const char *class_name = active_function->common.scope ? ZSTR_VAL(active_function->common.scope->name) : "";
zend_argument_count_error(
"%s%s%s() expects %s %d parameter%s, %d given",
class_name, \
class_name[0] ? "::" : "", \
ZSTR_VAL(active_function->common.function_name),
"exactly",
0,
"s",
num_args);
return FAILURE;
}
/* }}} */
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_wrong_parameters_count_error(int min_num_args, int max_num_args) /* {{{ */
{
int num_args = ZEND_CALL_NUM_ARGS(EG(current_execute_data));
zend_function *active_function = EG(current_execute_data)->func;
const char *class_name = active_function->common.scope ? ZSTR_VAL(active_function->common.scope->name) : "";
zend_argument_count_error(
"%s%s%s() expects %s %d parameter%s, %d given",
class_name, \
class_name[0] ? "::" : "", \
ZSTR_VAL(active_function->common.function_name),
min_num_args == max_num_args ? "exactly" : num_args < min_num_args ? "at least" : "at most",
num_args < min_num_args ? min_num_args : max_num_args,
(num_args < min_num_args ? min_num_args : max_num_args) == 1 ? "" : "s",
num_args);
}
/* }}} */
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_wrong_parameter_type_error(int num, zend_expected_type expected_type, zval *arg) /* {{{ */
{
static const char * const expected_error[] = {
Z_EXPECTED_TYPES(Z_EXPECTED_TYPE_STR)
NULL
};
if (EG(exception)) {
return;
}
zend_argument_type_error(num, "must be %s, %s given", expected_error[expected_type], zend_zval_type_name(arg));
}
/* }}} */
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_wrong_parameter_class_error(int num, const char *name, zval *arg) /* {{{ */
{
if (EG(exception)) {
return;
}
zend_argument_type_error(num, "must be of type %s, %s given", name, zend_zval_type_name(arg));
}
/* }}} */
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_wrong_parameter_class_or_null_error(int num, const char *name, zval *arg) /* {{{ */
{
if (EG(exception)) {
return;
}
zend_argument_type_error(num, "must be of type ?%s, %s given", name, zend_zval_type_name(arg));
}
/* }}} */
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_wrong_parameter_string_or_class_error(int num, const char *name, zval *arg) /* {{{ */
{
if (EG(exception)) {
return;
}
zend_argument_type_error(num, "must be of type %s|string, %s given", name, zend_zval_type_name(arg));
}
/* }}} */
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_wrong_parameter_string_or_class_or_null_error(int num, const char *name, zval *arg) /* {{{ */
{
if (EG(exception)) {
return;
}
zend_argument_type_error(num, "must be of type %s|string|null, %s given", name, zend_zval_type_name(arg));
}
/* }}} */
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_wrong_callback_error(int num, char *error) /* {{{ */
{
if (EG(exception)) {
return;
}
zend_argument_type_error(num, "must be a valid callback, %s", error);
efree(error);
}
/* }}} */
static ZEND_COLD void ZEND_FASTCALL zend_argument_error_variadic(zend_class_entry *error_ce, uint32_t arg_num, const char *format, va_list va) /* {{{ */
{
const char *space;
const char *class_name;
const char *arg_name;
char *message = NULL;
if (EG(exception)) {
return;
}
class_name = get_active_class_name(&space);
arg_name = get_active_function_arg_name(arg_num);
zend_vspprintf(&message, 0, format, va);
zend_throw_error(error_ce, "%s%s%s(): Argument #%d%s%s%s %s",
class_name, space, get_active_function_name(), arg_num,
arg_name ? " ($" : "", arg_name ? arg_name : "", arg_name ? ")" : "", message
);
efree(message);
}
/* }}} */
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_argument_error(zend_class_entry *error_ce, uint32_t arg_num, const char *format, ...) /* {{{ */
{
va_list va;
va_start(va, format);
zend_argument_error_variadic(error_ce, arg_num, format, va);
va_end(va);
}
/* }}} */
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_argument_type_error(uint32_t arg_num, const char *format, ...) /* {{{ */
{
va_list va;
va_start(va, format);
zend_argument_error_variadic(zend_ce_type_error, arg_num, format, va);
va_end(va);
}
/* }}} */
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_argument_value_error(uint32_t arg_num, const char *format, ...) /* {{{ */
{
va_list va;
va_start(va, format);
zend_argument_error_variadic(zend_ce_value_error, arg_num, format, va);
va_end(va);
}
/* }}} */
ZEND_API int ZEND_FASTCALL zend_parse_arg_class(zval *arg, zend_class_entry **pce, int num, int check_null) /* {{{ */
{
zend_class_entry *ce_base = *pce;
if (check_null && Z_TYPE_P(arg) == IS_NULL) {
*pce = NULL;
return 1;
}
if (!try_convert_to_string(arg)) {
*pce = NULL;
return 0;
}
*pce = zend_lookup_class(Z_STR_P(arg));
if (ce_base) {
if ((!*pce || !instanceof_function(*pce, ce_base))) {
zend_argument_type_error(num, "must be a class name derived from %s, '%s' given", ZSTR_VAL(ce_base->name), Z_STRVAL_P(arg));
*pce = NULL;
return 0;
}
}
if (!*pce) {
zend_argument_type_error(num, "must be a valid class name, '%s' given", Z_STRVAL_P(arg));
return 0;
}
return 1;
}
/* }}} */
ZEND_API int ZEND_FASTCALL zend_parse_arg_bool_weak(zval *arg, zend_bool *dest) /* {{{ */
{
if (EXPECTED(Z_TYPE_P(arg) <= IS_STRING)) {
*dest = zend_is_true(arg);
} else {
return 0;
}
return 1;
}
/* }}} */
ZEND_API int ZEND_FASTCALL zend_parse_arg_bool_slow(zval *arg, zend_bool *dest) /* {{{ */
{
if (UNEXPECTED(ZEND_ARG_USES_STRICT_TYPES())) {
return 0;
}
return zend_parse_arg_bool_weak(arg, dest);
}
/* }}} */
ZEND_API int ZEND_FASTCALL zend_parse_arg_long_weak(zval *arg, zend_long *dest) /* {{{ */
{
if (EXPECTED(Z_TYPE_P(arg) == IS_DOUBLE)) {
if (UNEXPECTED(zend_isnan(Z_DVAL_P(arg)))) {
return 0;
}
if (UNEXPECTED(!ZEND_DOUBLE_FITS_LONG(Z_DVAL_P(arg)))) {
return 0;
} else {
*dest = zend_dval_to_lval(Z_DVAL_P(arg));
}
} else if (EXPECTED(Z_TYPE_P(arg) == IS_STRING)) {
double d;
int type;
if (UNEXPECTED((type = is_numeric_str_function(Z_STR_P(arg), dest, &d)) != IS_LONG)) {
if (EXPECTED(type != 0)) {
if (UNEXPECTED(zend_isnan(d))) {
return 0;
}
if (UNEXPECTED(!ZEND_DOUBLE_FITS_LONG(d))) {
return 0;
} else {
*dest = zend_dval_to_lval(d);
}
} else {
return 0;
}
}
if (UNEXPECTED(EG(exception))) {
return 0;
}
} else if (EXPECTED(Z_TYPE_P(arg) < IS_TRUE)) {
*dest = 0;
} else if (EXPECTED(Z_TYPE_P(arg) == IS_TRUE)) {
*dest = 1;
} else {
return 0;
}
return 1;
}
/* }}} */
ZEND_API int ZEND_FASTCALL zend_parse_arg_long_slow(zval *arg, zend_long *dest) /* {{{ */
{
if (UNEXPECTED(ZEND_ARG_USES_STRICT_TYPES())) {
return 0;
}
return zend_parse_arg_long_weak(arg, dest);
}
/* }}} */
ZEND_API int ZEND_FASTCALL zend_parse_arg_double_weak(zval *arg, double *dest) /* {{{ */
{
if (EXPECTED(Z_TYPE_P(arg) == IS_LONG)) {
*dest = (double)Z_LVAL_P(arg);
} else if (EXPECTED(Z_TYPE_P(arg) == IS_STRING)) {
zend_long l;
int type;
if (UNEXPECTED((type = is_numeric_str_function(Z_STR_P(arg), &l, dest)) != IS_DOUBLE)) {
if (EXPECTED(type != 0)) {
*dest = (double)(l);
} else {
return 0;
}
}
if (UNEXPECTED(EG(exception))) {
return 0;
}
} else if (EXPECTED(Z_TYPE_P(arg) < IS_TRUE)) {
*dest = 0.0;
} else if (EXPECTED(Z_TYPE_P(arg) == IS_TRUE)) {
*dest = 1.0;
} else {
return 0;
}
return 1;
}
/* }}} */
ZEND_API int ZEND_FASTCALL zend_parse_arg_double_slow(zval *arg, double *dest) /* {{{ */
{
if (EXPECTED(Z_TYPE_P(arg) == IS_LONG)) {
/* SSTH Exception: IS_LONG may be accepted instead as IS_DOUBLE */
*dest = (double)Z_LVAL_P(arg);
} else if (UNEXPECTED(ZEND_ARG_USES_STRICT_TYPES())) {
return 0;
}
return zend_parse_arg_double_weak(arg, dest);
}
/* }}} */
ZEND_API int ZEND_FASTCALL zend_parse_arg_number_slow(zval *arg, zval **dest) /* {{{ */
{
if (UNEXPECTED(ZEND_ARG_USES_STRICT_TYPES())) {
return 0;
}
if (Z_TYPE_P(arg) == IS_STRING) {
zend_string *str = Z_STR_P(arg);
zend_long lval;
double dval;
zend_uchar type = is_numeric_string(ZSTR_VAL(str), ZSTR_LEN(str), &lval, &dval, -1);
if (type == IS_LONG) {
ZVAL_LONG(arg, lval);
} else if (type == IS_DOUBLE) {
ZVAL_DOUBLE(arg, dval);
} else {
return 0;
}
zend_string_release(str);
} else if (Z_TYPE_P(arg) < IS_TRUE) {
ZVAL_LONG(arg, 0);
} else if (Z_TYPE_P(arg) == IS_TRUE) {
ZVAL_LONG(arg, 1);
} else {
return 0;
}
*dest = arg;
return 1;
}
/* }}} */
ZEND_API int ZEND_FASTCALL zend_parse_arg_str_weak(zval *arg, zend_string **dest) /* {{{ */
{
if (EXPECTED(Z_TYPE_P(arg) < IS_STRING)) {
convert_to_string(arg);
*dest = Z_STR_P(arg);
} else if (UNEXPECTED(Z_TYPE_P(arg) == IS_OBJECT)) {
zend_object *zobj = Z_OBJ_P(arg);
zval obj;
if (zobj->handlers->cast_object(zobj, &obj, IS_STRING) == SUCCESS) {
OBJ_RELEASE(zobj);
ZVAL_COPY_VALUE(arg, &obj);
*dest = Z_STR_P(arg);
return 1;
}
return 0;
} else {
return 0;
}
return 1;
}
/* }}} */
ZEND_API int ZEND_FASTCALL zend_parse_arg_str_slow(zval *arg, zend_string **dest) /* {{{ */
{
if (UNEXPECTED(ZEND_ARG_USES_STRICT_TYPES())) {
return 0;
}
return zend_parse_arg_str_weak(arg, dest);
}
/* }}} */
ZEND_API int ZEND_FASTCALL zend_parse_arg_str_or_long_slow(zval *arg, zend_string **dest_str, zend_long *dest_long) /* {{{ */
{
if (UNEXPECTED(ZEND_ARG_USES_STRICT_TYPES())) {
return 0;
}
if (zend_parse_arg_long_weak(arg, dest_long)) {
*dest_str = NULL;
return 1;
} else if (zend_parse_arg_str_weak(arg, dest_str)) {
*dest_long = 0;
return 1;
} else {
return 0;
}
}
/* }}} */
static const char *zend_parse_arg_impl(zval *arg, va_list *va, const char **spec, char **error) /* {{{ */
{
const char *spec_walk = *spec;
char c = *spec_walk++;
int check_null = 0;
int separate = 0;
zval *real_arg = arg;
/* scan through modifiers */
ZVAL_DEREF(arg);
while (1) {
if (*spec_walk == '/') {
SEPARATE_ZVAL_NOREF(arg);
real_arg = arg;
separate = 1;
} else if (*spec_walk == '!') {
check_null = 1;
} else {
break;
}
spec_walk++;
}
switch (c) {
case 'l':
{
zend_long *p = va_arg(*va, zend_long *);
zend_bool *is_null = NULL;
if (check_null) {
is_null = va_arg(*va, zend_bool *);
}
if (!zend_parse_arg_long(arg, p, is_null, check_null)) {
return check_null ? "?int" : "int";
}
}
break;
case 'd':
{
double *p = va_arg(*va, double *);
zend_bool *is_null = NULL;
if (check_null) {
is_null = va_arg(*va, zend_bool *);
}
if (!zend_parse_arg_double(arg, p, is_null, check_null)) {
return check_null ? "?float" : "float";
}
}
break;
case 'n':
{
zval **p = va_arg(*va, zval **);
if (!zend_parse_arg_number(arg, p, check_null)) {
return check_null ? "int|float|null" : "int|float";
}
}
break;
case 's':
{
char **p = va_arg(*va, char **);
size_t *pl = va_arg(*va, size_t *);
if (!zend_parse_arg_string(arg, p, pl, check_null)) {
return check_null ? "?string" : "string";
}
}
break;
case 'p':
{
char **p = va_arg(*va, char **);
size_t *pl = va_arg(*va, size_t *);
if (!zend_parse_arg_path(arg, p, pl, check_null)) {
zend_spprintf(error, 0, "a valid path%s, %s given",
check_null ? " or null" : "", zend_zval_type_name(arg)
);
return "";
}
}
break;
case 'P':
{
zend_string **str = va_arg(*va, zend_string **);
if (!zend_parse_arg_path_str(arg, str, check_null)) {
zend_spprintf(error, 0, "a valid path%s, %s given",
check_null ? " or null" : "", zend_zval_type_name(arg)
);
return "";
}
}
break;
case 'S':
{
zend_string **str = va_arg(*va, zend_string **);
if (!zend_parse_arg_str(arg, str, check_null)) {
return check_null ? "?string" : "string";
}
}
break;
case 'b':
{
zend_bool *p = va_arg(*va, zend_bool *);
zend_bool *is_null = NULL;
if (check_null) {
is_null = va_arg(*va, zend_bool *);
}
if (!zend_parse_arg_bool(arg, p, is_null, check_null)) {
return check_null ? "?bool" : "bool";
}
}
break;
case 'r':
{
zval **p = va_arg(*va, zval **);
if (!zend_parse_arg_resource(arg, p, check_null)) {
return check_null ? "resource or null" : "resource";
}
}
break;
case 'A':
case 'a':
{
zval **p = va_arg(*va, zval **);
if (!zend_parse_arg_array(arg, p, check_null, c == 'A')) {
return check_null ? "?array" : "array";
}
}
break;
case 'H':
case 'h':
{
HashTable **p = va_arg(*va, HashTable **);
if (!zend_parse_arg_array_ht(arg, p, check_null, c == 'H', separate)) {
return check_null ? "?array" : "array";
}
}
break;
case 'o':
{
zval **p = va_arg(*va, zval **);
if (!zend_parse_arg_object(arg, p, NULL, check_null)) {
return check_null ? "?object" : "object";
}
}
break;
case 'O':
{
zval **p = va_arg(*va, zval **);
zend_class_entry *ce = va_arg(*va, zend_class_entry *);
if (!zend_parse_arg_object(arg, p, ce, check_null)) {
if (ce) {
if (check_null) {
zend_spprintf(error, 0, "of type ?%s, %s given", ZSTR_VAL(ce->name), zend_zval_type_name(arg));
return "";
} else {
return ZSTR_VAL(ce->name);
}
} else {
return check_null ? "?object" : "object";
}
}
}
break;
case 'C':
{
zend_class_entry *lookup, **pce = va_arg(*va, zend_class_entry **);
zend_class_entry *ce_base = *pce;
if (check_null && Z_TYPE_P(arg) == IS_NULL) {
*pce = NULL;
break;
}
if (!try_convert_to_string(arg)) {
*pce = NULL;
return ""; /* try_convert_to_string() throws an exception */
}
if ((lookup = zend_lookup_class(Z_STR_P(arg))) == NULL) {
*pce = NULL;
} else {
*pce = lookup;
}
if (ce_base) {
if ((!*pce || !instanceof_function(*pce, ce_base))) {
zend_spprintf(error, 0, "a class name derived from %s%s, '%s' given",
ZSTR_VAL(ce_base->name), check_null ? " or null" : "", Z_STRVAL_P(arg));
*pce = NULL;
return "";
}
}
if (!*pce) {
zend_spprintf(error, 0, "a valid class name%s, '%s' given",
check_null ? " or null" : "", Z_STRVAL_P(arg));
return "";
}
break;
}
break;
case 'f':
{
zend_fcall_info *fci = va_arg(*va, zend_fcall_info *);
zend_fcall_info_cache *fcc = va_arg(*va, zend_fcall_info_cache *);
char *is_callable_error = NULL;
if (check_null && Z_TYPE_P(arg) == IS_NULL) {
fci->size = 0;
fcc->function_handler = 0;
break;
}
if (zend_fcall_info_init(arg, 0, fci, fcc, NULL, &is_callable_error) == SUCCESS) {
ZEND_ASSERT(!is_callable_error);
break;
}
if (is_callable_error) {
zend_spprintf(error, 0, "a valid callback%s, %s", check_null ? " or null" : "", is_callable_error);
efree(is_callable_error);
return "";
} else {
return check_null ? "a valid callback or null" : "a valid callback";
}
}
case 'z':
{
zval **p = va_arg(*va, zval **);
zend_parse_arg_zval_deref(real_arg, p, check_null);
}
break;
case 'Z': /* replace with 'z' */
case 'L': /* replace with 'l' */
ZEND_ASSERT(0 && "ZPP modifier no longer supported");
default:
return "unknown";
}
*spec = spec_walk;
return NULL;
}
/* }}} */
static int zend_parse_arg(uint32_t arg_num, zval *arg, va_list *va, const char **spec, int flags) /* {{{ */
{
const char *expected_type = NULL;
char *error = NULL;
expected_type = zend_parse_arg_impl(arg, va, spec, &error);
if (expected_type) {
if (EG(exception)) {
return FAILURE;
}
if (!(flags & ZEND_PARSE_PARAMS_QUIET) && (*expected_type || error)) {
if (error) {
zend_argument_type_error(arg_num, "must be %s", error);
efree(error);
} else {
zend_argument_type_error(arg_num, "must be of type %s, %s given", expected_type, zend_zval_type_name(arg));
}
} else if (error) {
efree(error);
}
return FAILURE;
}
return SUCCESS;
}
/* }}} */
ZEND_API int zend_parse_parameter(int flags, uint32_t arg_num, zval *arg, const char *spec, ...)
{
va_list va;
int ret;
va_start(va, spec);
ret = zend_parse_arg(arg_num, arg, &va, &spec, flags);
va_end(va);
return ret;
}
static ZEND_COLD void zend_parse_parameters_debug_error(const char *msg) {
zend_function *active_function = EG(current_execute_data)->func;
const char *class_name = active_function->common.scope
? ZSTR_VAL(active_function->common.scope->name) : "";
zend_error_noreturn(E_CORE_ERROR, "%s%s%s(): %s",
class_name, class_name[0] ? "::" : "",
ZSTR_VAL(active_function->common.function_name), msg);
}
static int zend_parse_va_args(uint32_t num_args, const char *type_spec, va_list *va, int flags) /* {{{ */
{
const char *spec_walk;
char c;
uint32_t i;
uint32_t min_num_args = 0;
uint32_t max_num_args = 0;
uint32_t post_varargs = 0;
zval *arg;
zend_bool have_varargs = 0;
zend_bool have_optional_args = 0;
zval **varargs = NULL;
int *n_varargs = NULL;
for (spec_walk = type_spec; *spec_walk; spec_walk++) {
c = *spec_walk;
switch (c) {
case 'l': case 'd':
case 's': case 'b':
case 'r': case 'a':
case 'o': case 'O':
case 'z': case 'Z':
case 'C': case 'h':
case 'f': case 'A':
case 'H': case 'p':
case 'S': case 'P':
case 'L': case 'n':
max_num_args++;
break;
case '|':
min_num_args = max_num_args;
have_optional_args = 1;
break;
case '/':
case '!':
/* Pass */
break;
case '*':
case '+':
if (have_varargs) {
zend_parse_parameters_debug_error(
"only one varargs specifier (* or +) is permitted");
return FAILURE;
}
have_varargs = 1;
/* we expect at least one parameter in varargs */
if (c == '+') {
max_num_args++;
}
/* mark the beginning of varargs */
post_varargs = max_num_args;
break;
default:
zend_parse_parameters_debug_error("bad type specifier while parsing parameters");
return FAILURE;
}
}
/* with no optional arguments the minimum number of arguments must be the same as the maximum */
if (!have_optional_args) {
min_num_args = max_num_args;
}
if (have_varargs) {
/* calculate how many required args are at the end of the specifier list */
post_varargs = max_num_args - post_varargs;
max_num_args = UINT32_MAX;
}
if (num_args < min_num_args || num_args > max_num_args) {
if (!(flags & ZEND_PARSE_PARAMS_QUIET)) {
zend_function *active_function = EG(current_execute_data)->func;
const char *class_name = active_function->common.scope ? ZSTR_VAL(active_function->common.scope->name) : "";
zend_argument_count_error("%s%s%s() expects %s %d parameter%s, %d given",
class_name,
class_name[0] ? "::" : "",
ZSTR_VAL(active_function->common.function_name),
min_num_args == max_num_args ? "exactly" : num_args < min_num_args ? "at least" : "at most",
num_args < min_num_args ? min_num_args : max_num_args,
(num_args < min_num_args ? min_num_args : max_num_args) == 1 ? "" : "s",
num_args);
}
return FAILURE;
}
if (num_args > ZEND_CALL_NUM_ARGS(EG(current_execute_data))) {
zend_parse_parameters_debug_error("could not obtain parameters for parsing");
return FAILURE;
}
i = 0;
while (num_args-- > 0) {
if (*type_spec == '|') {
type_spec++;
}
if (*type_spec == '*' || *type_spec == '+') {
int num_varargs = num_args + 1 - post_varargs;
/* eat up the passed in storage even if it won't be filled in with varargs */
varargs = va_arg(*va, zval **);
n_varargs = va_arg(*va, int *);
type_spec++;
if (num_varargs > 0) {
*n_varargs = num_varargs;
*varargs = ZEND_CALL_ARG(EG(current_execute_data), i + 1);
/* adjust how many args we have left and restart loop */
num_args += 1 - num_varargs;
i += num_varargs;
continue;
} else {
*varargs = NULL;
*n_varargs = 0;
}
}
arg = ZEND_CALL_ARG(EG(current_execute_data), i + 1);
if (zend_parse_arg(i+1, arg, va, &type_spec, flags) == FAILURE) {
/* clean up varargs array if it was used */