msgpack_unpack.c

#include "php.h"
#include "php_ini.h"
#include "ext/standard/php_incomplete_class.h"

#include "php_msgpack.h"
#include "msgpack_pack.h"
#include "msgpack_unpack.h"
#include "msgpack_errors.h"

#define VAR_ENTRIES_MAX 1024

typedef struct {
    zval data[VAR_ENTRIES_MAX];
    int32_t used_slots;
    void *next;
} var_entries;

#define MSGPACK_UNSERIALIZE_ALLOC_STACK(_unpack)                 \
	if (UNEXPECTED(_unpack->deps == 0)) {                        \
		*obj = _unpack->retval;                                  \
	} else {                                                     \
		*obj = msgpack_stack_push(_unpack->var_hash);            \
	}

#define MSGPACK_UNSERIALIZE_ALLOC_VALUE(_unpack)                 \
	if (UNEXPECTED(_unpack->deps <= 0)) {                        \
		*obj = _unpack->retval;                                  \
	} else {                                                     \
		*obj = msgpack_var_push(_unpack->var_hash);              \
	}

#define MSGPACK_UNSERIALIZE_DEC_DEP(_unpack)                     \
    _unpack->stack[_unpack->deps-1]--;                           \
    if (_unpack->stack[_unpack->deps-1] <= 0) {                  \
        _unpack->deps--;                                         \
    }

#define MSGPACK_UNSERIALIZE_FINISH_ITEM(_unpack, _v1, _v2)       \
	if ((_v2) && MSGPACK_IS_STACK_VALUE((_v2))) {                \
		msgpack_stack_pop(_unpack->var_hash, (_v2));             \
	}                                                            \
	if ((_v1) && MSGPACK_IS_STACK_VALUE((_v1))) {                \
		msgpack_stack_pop(_unpack->var_hash, (_v1));             \
	}                                                            \
	MSGPACK_UNSERIALIZE_DEC_DEP(_unpack);

#define MSGPACK_UNSERIALIZE_FINISH_MAP_ITEM(_unpack, _key, _val) \
    zval_ptr_dtor(_key);                                         \
    zval_ptr_dtor(_val);                                         \
    MSGPACK_UNSERIALIZE_FINISH_ITEM(_unpack, _key, _val);

#define UNSET_MAGIC_METHODS(_ce)                                 \
    __get = _ce->__get;                                          \
    _ce->__get = NULL;                                           \
    __set = _ce->__set;                                          \
    _ce->__set = NULL;                                           \

#define RESET_MAGIC_METHODS(_ce)                                 \
    ce->__set = __set;                                           \
    ce->__get = __get;                                           \

#define MSGPACK_IS_STACK_VALUE(_v)   (Z_TYPE_P((zval *)(_v)) < IS_ARRAY)

static zval *msgpack_var_push(msgpack_unserialize_data_t *var_hashx) /* {{{ */ {
    var_entries *var_hash, *prev = NULL;

    if (!var_hashx) {
        return NULL;
    }

    var_hash = var_hashx->first;

    while (var_hash && var_hash->used_slots == VAR_ENTRIES_MAX) {
        prev = var_hash;
        var_hash = var_hash->next;
    }

    if (!var_hash) {
        var_hash = emalloc(sizeof(var_entries));
        var_hash->used_slots = 0;
        var_hash->next = 0;

        if (!var_hashx->first) {
            var_hashx->first = var_hash;
        } else {
            prev->next = var_hash;
        }
    }

    return &var_hash->data[var_hash->used_slots++];
}
/* }}} */

static inline void msgpack_var_replace(zval *old, zval *new) /* {{{ */ {
	if (!MSGPACK_IS_STACK_VALUE(old)) {
		ZVAL_INDIRECT(old, new);
	}
}
/* }}} */

static zval *msgpack_var_access(msgpack_unserialize_data_t *var_hashx, long id) /* {{{ */ {
    var_entries *var_hash = var_hashx->first;

    while (id >= VAR_ENTRIES_MAX && var_hash && var_hash->used_slots == VAR_ENTRIES_MAX) {
        var_hash = var_hash->next;
        id -= VAR_ENTRIES_MAX;
    }

    if (!var_hash) {
		return NULL;
    }

    if (id > 0 && id < var_hash->used_slots) {
		zval *zv = &var_hash->data[id - 1];
		if (UNEXPECTED(Z_TYPE_P(zv) == IS_INDIRECT)) {
			zv = Z_INDIRECT_P(zv);
		}
		return zv;
	}

	return NULL;
}
/* }}} */

static zval *msgpack_stack_push(msgpack_unserialize_data_t *var_hashx) /* {{{ */ {
    var_entries *var_hash, *prev = NULL;

    if (!var_hashx) {
        return NULL;
    }

    var_hash = var_hashx->first_dtor;

    while (var_hash && var_hash->used_slots == VAR_ENTRIES_MAX) {
        prev = var_hash;
        var_hash = var_hash->next;
    }

    if (!var_hash) {
        var_hash = emalloc(sizeof(var_entries));
        var_hash->used_slots = 0;
        var_hash->next = 0;

        if (!var_hashx->first_dtor) {
            var_hashx->first_dtor = var_hash;
        } else {
            prev->next = var_hash;
        }
    }

    return &var_hash->data[var_hash->used_slots++];
}
/* }}} */

static void msgpack_stack_pop(msgpack_unserialize_data_t *var_hashx, zval *v) /* {{{ */ {
	var_entries *var_hash = var_hashx->first_dtor;

	while (var_hash && var_hash->used_slots == VAR_ENTRIES_MAX) {
		var_hash = var_hash->next;
	}

	if (!var_hash) {
		return;
	}

	ZEND_ASSERT((&(var_hash->data[var_hash->used_slots -1]) == v));
	if ((&(var_hash->data[var_hash->used_slots -1]) == v)) {
		var_hash->used_slots--;
		ZVAL_UNDEF(v);
	}

	/*
	for (i = count; i > 0; i--) {
		var_hash->used_slots--;
		if (var_hash->used_slots < 0) {
			var_hash->used_slots = 0;
			ZVAL_UNDEF(&var_hash->data[var_hash->used_slots]);
			break;
		} else {
			ZVAL_UNDEF(&var_hash->data[var_hash->used_slots]);
		}
	}
	*/
}
/* }}} */

static zend_class_entry* msgpack_unserialize_class(zval **container, zend_string *class_name, zend_bool init_class) /* {{{ */ {
    zend_class_entry *ce;
    int func_call_status;
    zend_bool incomplete_class = 0;
    zval user_func, retval, args[1], *container_val, container_tmp, *val;
    zend_string *str_key;

    container_val = Z_ISREF_P(*container) ? Z_REFVAL_P(*container) : *container;
    ZVAL_UNDEF(&container_tmp);

    do {
        /* Try to find class directly */
        ce = zend_lookup_class(class_name);
        if (ce != NULL) {
            break;
        }

        /* Check for unserialize callback */
        if ((PG(unserialize_callback_func) == NULL) ||
            (PG(unserialize_callback_func)[0] == '\0')) {
            incomplete_class = 1;
            ce = PHP_IC_ENTRY;
            break;
        }

        /* Call unserialize callback */
        ZVAL_STRING(&user_func, PG(unserialize_callback_func));
        ZVAL_STR(&args[0], class_name);

        func_call_status = call_user_function_ex(CG(function_table), NULL, &user_func, &retval, 1, args, 0, NULL);
        zval_ptr_dtor(&user_func);
        if (func_call_status != SUCCESS) {
            MSGPACK_WARNING("[msgpack] (%s) defined (%s) but not found",
                            __FUNCTION__, ZSTR_VAL(class_name));

            incomplete_class = 1;
            ce = PHP_IC_ENTRY;
            break;
        }

        if ((ce = zend_lookup_class(class_name)) == NULL) {
            MSGPACK_WARNING("[msgpack] (%s) Function %s() hasn't defined "
                            "the class it was called for",
                            __FUNCTION__, ZSTR_VAL(class_name));

            incomplete_class = 1;
            ce = PHP_IC_ENTRY;
        }
    }
    while(0);

    if (EG(exception)) {
        MSGPACK_WARNING("[msgpack] (%s) Exception error", __FUNCTION__);
        return NULL;
    }

    if (init_class || incomplete_class) {
        if (Z_TYPE_P(container_val) == IS_ARRAY) {
            ZVAL_COPY_VALUE(&container_tmp, container_val);
        }
        object_init_ex(container_val, ce);

		if (Z_TYPE(container_tmp) != IS_UNDEF) {
			ZEND_HASH_FOREACH_STR_KEY_VAL(HASH_OF(&container_tmp), str_key, val) {
				const char *class_name, *prop_name;
				size_t prop_len;
				zend_class_entry *ce = Z_OBJCE_P(container_val);
				zend_function *__set, *__get;

				UNSET_MAGIC_METHODS(ce);
				zend_unmangle_property_name_ex(str_key, &class_name, &prop_name, &prop_len);
				zend_update_property(ce, container_val, prop_name, prop_len, val);
				RESET_MAGIC_METHODS(ce);

			} ZEND_HASH_FOREACH_END();
            zval_dtor(&container_tmp);
        }

    }

    /* store incomplete class name */
    if (incomplete_class) {
        php_store_class_name(container_val, ZSTR_VAL(class_name), ZSTR_LEN(class_name));
    }

    return ce;
}
/* }}} */

void msgpack_unserialize_var_init(msgpack_unserialize_data_t *var_hashx) /* {{{ */ {
    var_hashx->first = 0;
    var_hashx->first_dtor = 0;
}
/* }}} */

void msgpack_unserialize_var_destroy(msgpack_unserialize_data_t *var_hashx, zend_bool err) /* {{{ */ {
	size_t i;
    void *next;
    var_entries *var_hash = var_hashx->first;

    while (var_hash) {
		if (err) {
			for (i = var_hash->used_slots; i > 0; i--) {
				zval_ptr_dtor(&var_hash->data[i - 1]);
			}
		}
        next = var_hash->next;
        efree(var_hash);
        var_hash = next;
    }

    var_hash = var_hashx->first_dtor;
    while (var_hash) {
		for (i = var_hash->used_slots; i > 0; i--) {
			zval_ptr_dtor(&var_hash->data[i-1]);
		}
        next = var_hash->next;
        efree(var_hash);
        var_hash = next;
    }
}
/* }}} */

void msgpack_unserialize_init(msgpack_unserialize_data *unpack) /* {{{ */ {
    unpack->deps = 0;
    unpack->type = MSGPACK_SERIALIZE_TYPE_NONE;
}
/* }}} */

int msgpack_unserialize_uint8(msgpack_unserialize_data *unpack, uint8_t data, zval **obj) /* {{{ */ {
    MSGPACK_UNSERIALIZE_ALLOC_STACK(unpack);

    ZVAL_LONG(*obj, data);

    return 0;
}
/* }}} */

int msgpack_unserialize_uint16(msgpack_unserialize_data *unpack, uint16_t data, zval **obj) /* {{{ */ {
    MSGPACK_UNSERIALIZE_ALLOC_STACK(unpack);

    ZVAL_LONG(*obj, data);

    return 0;
}
/* }}} */

int msgpack_unserialize_uint32(msgpack_unserialize_data *unpack, uint32_t data, zval **obj) /* {{{ */ {
    MSGPACK_UNSERIALIZE_ALLOC_STACK(unpack);

    ZVAL_LONG(*obj, data);

    return 0;
}
/* }}} */

int msgpack_unserialize_uint64(msgpack_unserialize_data *unpack, uint64_t data, zval **obj) /* {{{ */ {
    MSGPACK_UNSERIALIZE_ALLOC_STACK(unpack);

    ZVAL_LONG(*obj, data);

    return 0;
}
/* }}} */

int msgpack_unserialize_int8(msgpack_unserialize_data *unpack, int8_t data, zval **obj) /* {{{ */ {
    MSGPACK_UNSERIALIZE_ALLOC_STACK(unpack);

    ZVAL_LONG(*obj, data);

    return 0;
}
/* }}} */

int msgpack_unserialize_int16(msgpack_unserialize_data *unpack, int16_t data, zval **obj) /* {{{ */ {
    MSGPACK_UNSERIALIZE_ALLOC_STACK(unpack);

    ZVAL_LONG(*obj, data);

    return 0;
}
/* }}} */

int msgpack_unserialize_int32(msgpack_unserialize_data *unpack, int32_t data, zval **obj) /* {{{ */ {
    MSGPACK_UNSERIALIZE_ALLOC_STACK(unpack);

    ZVAL_LONG(*obj, data);

    return 0;
}
/* }}} */

int msgpack_unserialize_int64(msgpack_unserialize_data *unpack, int64_t data, zval **obj) /* {{{ */ {
    MSGPACK_UNSERIALIZE_ALLOC_STACK(unpack);

    ZVAL_LONG(*obj, data);

    return 0;
}
/* }}} */

int msgpack_unserialize_float(msgpack_unserialize_data *unpack, float data, zval **obj) /* {{{ */ {
    MSGPACK_UNSERIALIZE_ALLOC_STACK(unpack);

    ZVAL_DOUBLE(*obj, data);

    return 0;
}
/* }}} */

int msgpack_unserialize_double(msgpack_unserialize_data *unpack, double data, zval **obj) /* {{{ */ {
    MSGPACK_UNSERIALIZE_ALLOC_STACK(unpack);

    ZVAL_DOUBLE(*obj, data);

    return 0;
}
/* }}} */

int msgpack_unserialize_nil(msgpack_unserialize_data *unpack, zval **obj) /* {{{ */ {
    MSGPACK_UNSERIALIZE_ALLOC_STACK(unpack);

    ZVAL_NULL(*obj);

    return 0;
}
/* }}} */

int msgpack_unserialize_true(msgpack_unserialize_data *unpack, zval **obj) /* {{{ */ {
    MSGPACK_UNSERIALIZE_ALLOC_STACK(unpack);

    ZVAL_BOOL(*obj, 1);

    return 0;
}
/* }}} */

int msgpack_unserialize_false(msgpack_unserialize_data *unpack, zval **obj) /* {{{ */ {
    MSGPACK_UNSERIALIZE_ALLOC_STACK(unpack);

    ZVAL_BOOL(*obj, 0);

    return 0;
}
/* }}} */

int msgpack_unserialize_raw(msgpack_unserialize_data *unpack, const char* base, const char* data, unsigned int len, zval **obj) /* {{{ */ {
    MSGPACK_UNSERIALIZE_ALLOC_STACK(unpack);

	if (len == 0) {
		ZVAL_EMPTY_STRING(*obj);
	} else {
		/* TODO: check malformed input? */
		ZVAL_STRINGL(*obj, data, len);
	}

    return 0;
}
/* }}} */

int msgpack_unserialize_bin(msgpack_unserialize_data *unpack, const char* base, const char* data, unsigned int len, zval **obj) /* {{{ */ {
    MSGPACK_UNSERIALIZE_ALLOC_STACK(unpack);

	ZVAL_STRINGL(*obj, data, len);

    return 0;
}
/* }}} */

int msgpack_unserialize_array(msgpack_unserialize_data *unpack, unsigned int count, zval **obj) /* {{{ */ {
    MSGPACK_UNSERIALIZE_ALLOC_VALUE(unpack);

    array_init(*obj);

    if (count) {
		unpack->stack[unpack->deps++] = count;
	}

    return 0;
}
/* }}} */

int msgpack_unserialize_array_item(msgpack_unserialize_data *unpack, zval **container, zval *obj) /* {{{ */ {
    zval *nval = zend_hash_next_index_insert(Z_ARRVAL_P(*container), obj);

	if (MSGPACK_IS_STACK_VALUE(obj)) {
		MSGPACK_UNSERIALIZE_FINISH_ITEM(unpack, obj, NULL);
	} else {
		msgpack_var_replace(obj, nval);
		MSGPACK_UNSERIALIZE_DEC_DEP(unpack);
	}

    return 0;
}
/* }}} */

int msgpack_unserialize_map(msgpack_unserialize_data *unpack, unsigned int count, zval **obj) /* {{{ */ {
    MSGPACK_UNSERIALIZE_ALLOC_VALUE(unpack);

    if (count) {
		unpack->stack[unpack->deps++] = count;
	}

    unpack->type = MSGPACK_SERIALIZE_TYPE_NONE;

    if (count == 0) {
        if (MSGPACK_G(php_only)) {
            object_init(*obj);
        } else {
            array_init(*obj);
        }
    } else {
		ZVAL_NULL(*obj);
    }

    return 0;
}
/* }}} */

int msgpack_unserialize_map_item(msgpack_unserialize_data *unpack, zval **container, zval *key, zval *val) /* {{{ */ {
    long deps;
	zval *nval;
	zval *container_val;

    if (MSGPACK_G(php_only)) {
        zend_class_entry *ce;

        if (Z_TYPE_P(key) == IS_NULL) {
            unpack->type = MSGPACK_SERIALIZE_TYPE_NONE;

            if (Z_TYPE_P(val) == IS_LONG) {
                switch (Z_LVAL_P(val)) {
                    case MSGPACK_SERIALIZE_TYPE_REFERENCE:
                        ZVAL_MAKE_REF(*container);
                        break;
                    case MSGPACK_SERIALIZE_TYPE_RECURSIVE:
                        unpack->type = MSGPACK_SERIALIZE_TYPE_RECURSIVE;
                        break;
                    case MSGPACK_SERIALIZE_TYPE_CUSTOM_OBJECT:
                        unpack->type = MSGPACK_SERIALIZE_TYPE_CUSTOM_OBJECT;
                        break;
                    case MSGPACK_SERIALIZE_TYPE_OBJECT_REFERENCE:
                        unpack->type = MSGPACK_SERIALIZE_TYPE_OBJECT_REFERENCE;
                        break;
                    case MSGPACK_SERIALIZE_TYPE_OBJECT:
                        unpack->type = MSGPACK_SERIALIZE_TYPE_OBJECT;
                        break;
                    default:
                        break;
                }
            } else if (Z_TYPE_P(val) == IS_STRING) {
                ce = msgpack_unserialize_class(container, Z_STR_P(val), 1);
                if (ce == NULL) {
                    MSGPACK_UNSERIALIZE_FINISH_MAP_ITEM(unpack, key, val);
                    return 0;
                }
            }
            MSGPACK_UNSERIALIZE_FINISH_MAP_ITEM(unpack, key, val);
            return 0;
        } else {
            switch (unpack->type) {
                case MSGPACK_SERIALIZE_TYPE_CUSTOM_OBJECT:
                    unpack->type = MSGPACK_SERIALIZE_TYPE_NONE;

                    ce = msgpack_unserialize_class(container, Z_STR_P(key), 0);
                    if (ce == NULL) {
                        MSGPACK_UNSERIALIZE_FINISH_MAP_ITEM(unpack, key, val);
                        return 0;
                    }
                    /* implementing Serializable */
                    if (ce->unserialize == NULL) {
                        MSGPACK_WARNING(
                            "[msgpack] (%s) Class %s has no unserializer",
                            __FUNCTION__, ce->name);

                        MSGPACK_UNSERIALIZE_FINISH_MAP_ITEM(unpack, key, val);

                        return 0;
                    }

                    ce->unserialize(*container, ce, (const unsigned char *)Z_STRVAL_P(val), Z_STRLEN_P(val) + 1, NULL);

                    MSGPACK_UNSERIALIZE_FINISH_MAP_ITEM(unpack, key, val);

                    return 0;
                case MSGPACK_SERIALIZE_TYPE_RECURSIVE:
                case MSGPACK_SERIALIZE_TYPE_OBJECT:
                case MSGPACK_SERIALIZE_TYPE_OBJECT_REFERENCE:
                {
                    zval *rval;
                    int type = unpack->type;

                    unpack->type = MSGPACK_SERIALIZE_TYPE_NONE;
                    if ((rval = msgpack_var_access(unpack->var_hash, Z_LVAL_P(val) - 1)) == NULL)  {
						if (UNEXPECTED(Z_LVAL_P(val) == 1 /* access the retval */)) {
							rval = unpack->retval;
						} else {
							MSGPACK_WARNING("[msgpack] (%s) Invalid references value: %ld",
									__FUNCTION__, Z_LVAL_P(val) - 1);

							MSGPACK_UNSERIALIZE_FINISH_MAP_ITEM(unpack, key, val);
                        	return 0;
						}
                    }

                    if (container != NULL) {
                        zval_ptr_dtor(*container);
					}

                    ZVAL_COPY_VALUE(*container, rval);
                    if (type == MSGPACK_SERIALIZE_TYPE_OBJECT_REFERENCE) {
                        ZVAL_MAKE_REF(*container);
                    }

					Z_TRY_ADDREF_P(*container);

                    MSGPACK_UNSERIALIZE_FINISH_MAP_ITEM(unpack, key, val);
                    return 0;
                }
            }
        }
    }

    container_val = Z_ISREF_P(*container) ? Z_REFVAL_P(*container) : *container;

    if (Z_TYPE_P(container_val) == IS_OBJECT) {
		switch (Z_TYPE_P(key)) {
			case IS_LONG:
                if ((nval = zend_hash_index_update(Z_OBJPROP_P(container_val), Z_LVAL_P(key), val)) == NULL) {
                    zval_ptr_dtor(val);
                    MSGPACK_WARNING(
                            "[msgpack] (%s) illegal offset type, skip this decoding",
                            __FUNCTION__);
                }
                break;
			case IS_STRING:
				if (Z_OBJCE_P(container_val) != PHP_IC_ENTRY) {
					const char *class_name, *prop_name;
					zend_class_entry *ce = Z_OBJCE_P(container_val);
					zval rv;
					size_t prop_len;
					zend_function *__get, *__set;

					UNSET_MAGIC_METHODS(ce);
					zend_unmangle_property_name_ex(Z_STR_P(key), &class_name, &prop_name, &prop_len);
					zend_update_property(ce, container_val, prop_name, prop_len, val);
					nval = zend_read_property(Z_OBJCE_P(container_val), container_val, prop_name, prop_len, 1, &rv);
					RESET_MAGIC_METHODS(ce);

					zval_ptr_dtor(key);
					zval_ptr_dtor(val);
				} else {
					if ((nval = zend_symtable_update(Z_OBJPROP_P(container_val), Z_STR_P(key), val)) == NULL) {
						zval_ptr_dtor(val);
						MSGPACK_WARNING(
								"[msgpack] (%s) illegal offset type, skip this decoding",
								__FUNCTION__);
					}
					zval_ptr_dtor(key);
				}
				break;
			default:
                MSGPACK_WARNING("[msgpack] (%s) illegal key type", __FUNCTION__);

                if (MSGPACK_G(illegal_key_insert)) {
                    if ((nval = zend_hash_next_index_insert(Z_OBJPROP_P(container_val), key)) == NULL) {
                        zval_ptr_dtor(key);
                    }
                    if ((nval = zend_hash_next_index_insert(Z_OBJPROP_P(container_val), val)) == NULL) {
                        zval_ptr_dtor(val);
                    }
                } else {
					zend_string *skey = zval_get_string(key);
                    if ((nval = zend_symtable_update(Z_OBJPROP_P(container_val), skey, val)) == NULL) {
                        zval_ptr_dtor(val);
                    }
					zend_string_release(skey);
                }
				break;
		}
    } else {
		if (Z_TYPE_P(container_val) != IS_ARRAY) {
			array_init(container_val);
		}
        switch (Z_TYPE_P(key)) {
            case IS_LONG:
                if ((nval = zend_hash_index_update(Z_ARRVAL_P(container_val), Z_LVAL_P(key), val)) == NULL) {
                    zval_ptr_dtor(val);
                    MSGPACK_WARNING(
                            "[msgpack] (%s) illegal offset type, skip this decoding",
                            __FUNCTION__);
                }
                break;
            case IS_STRING:
                if ((nval = zend_symtable_update(Z_ARRVAL_P(container_val), Z_STR_P(key), val)) == NULL) {
                    zval_ptr_dtor(val);
                    MSGPACK_WARNING(
                            "[msgpack] (%s) illegal offset type, skip this decoding",
                            __FUNCTION__);
                }
                zval_ptr_dtor(key);
                break;
            default:
                MSGPACK_WARNING("[msgpack] (%s) illegal key type", __FUNCTION__);

                if (MSGPACK_G(illegal_key_insert)) {
                    if ((nval = zend_hash_next_index_insert(Z_ARRVAL_P(container_val), key)) == NULL) {
                        zval_ptr_dtor(key);
                    }
                    if ((nval = zend_hash_next_index_insert(Z_ARRVAL_P(container_val), val)) == NULL) {
                        zval_ptr_dtor(val);
                    }
                } else {
					zend_string *skey = zval_get_string(key);
                    if ((nval = zend_symtable_update(Z_ARRVAL_P(container_val), skey, val)) == NULL) {
                        zval_ptr_dtor(val);
                    }
					zend_string_release(skey);
                }
                break;
        }
    }

	if (MSGPACK_IS_STACK_VALUE(val)) {
		msgpack_stack_pop(unpack->var_hash, val);
	} else {
		msgpack_var_replace(val, nval);
	}
	if (MSGPACK_IS_STACK_VALUE(key)) {
		/* just in case for malformed data */
		msgpack_stack_pop(unpack->var_hash, key);
	}

    deps = unpack->deps - 1;
    unpack->stack[deps]--;
	if (unpack->stack[deps] == 0) {
		/* wakeup */
		unpack->deps--;
		if (MSGPACK_G(php_only) &&
				Z_TYPE_P(container_val) == IS_OBJECT &&
				Z_OBJCE_P(container_val) != PHP_IC_ENTRY &&
				zend_hash_str_exists(&Z_OBJCE_P(container_val)->function_table, "__wakeup", sizeof("__wakeup") - 1)) {
			zval wakeup, r;
			ZVAL_STRING(&wakeup, "__wakeup");
			call_user_function_ex(CG(function_table), container_val, &wakeup, &r, 0, NULL, 1, NULL);
			zval_ptr_dtor(&r);
			zval_ptr_dtor(&wakeup);
        }
    }

    return 0;
}
/* }}} */

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: noet sw=4 ts=4 fdm=marker
 * vim<600: noet sw=4 ts=4
 */