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pdo_stmt.c
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/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| https://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP 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. |
+----------------------------------------------------------------------+
| Author: Wez Furlong <[email protected]> |
| Marcus Boerger <[email protected]> |
| Sterling Hughes <[email protected]> |
+----------------------------------------------------------------------+
*/
/* The PDO Statement Handle Class */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "ext/standard/php_var.h"
#include "php_pdo.h"
#include "php_pdo_driver.h"
#include "php_pdo_int.h"
#include "zend_exceptions.h"
#include "zend_interfaces.h"
#include "php_memory_streams.h"
#include "pdo_stmt_arginfo.h"
#define PHP_STMT_GET_OBJ \
pdo_stmt_t *stmt = Z_PDO_STMT_P(ZEND_THIS); \
if (!stmt->dbh) { \
zend_throw_error(NULL, "%s object is uninitialized", ZSTR_VAL(Z_OBJ(EX(This))->ce->name)); \
RETURN_THROWS(); \
} \
static inline bool rewrite_name_to_position(pdo_stmt_t *stmt, struct pdo_bound_param_data *param) /* {{{ */
{
if (stmt->bound_param_map) {
/* rewriting :name to ? style.
* We need to fixup the parameter numbers on the parameters.
* If we find that a given named parameter has been used twice,
* we will raise an error, as we can't be sure that it is safe
* to bind multiple parameters onto the same zval in the underlying
* driver */
zend_string *name;
int position = 0;
if (stmt->named_rewrite_template) {
/* this is not an error here */
return 1;
}
if (!param->name) {
/* do the reverse; map the parameter number to the name */
if ((name = zend_hash_index_find_ptr(stmt->bound_param_map, param->paramno)) != NULL) {
param->name = zend_string_copy(name);
return 1;
}
/* TODO Error? */
pdo_raise_impl_error(stmt->dbh, stmt, "HY093", "parameter was not defined");
return 0;
}
ZEND_HASH_FOREACH_PTR(stmt->bound_param_map, name) {
if (!zend_string_equals(name, param->name)) {
position++;
continue;
}
if (param->paramno >= 0) {
/* TODO Error? */
pdo_raise_impl_error(stmt->dbh, stmt, "IM001", "PDO refuses to handle repeating the same :named parameter for multiple positions with this driver, as it might be unsafe to do so. Consider using a separate name for each parameter instead");
return -1;
}
param->paramno = position;
return 1;
} ZEND_HASH_FOREACH_END();
/* TODO Error? */
pdo_raise_impl_error(stmt->dbh, stmt, "HY093", "parameter was not defined");
return 0;
}
return 1;
}
/* }}} */
/* trigger callback hook for parameters */
static bool dispatch_param_event(pdo_stmt_t *stmt, enum pdo_param_event event_type) /* {{{ */
{
bool ret = 1, is_param = 1;
struct pdo_bound_param_data *param;
HashTable *ht;
if (stmt->dbh->skip_param_evt & (1 << event_type)) {
return 1;
}
if (!stmt->methods->param_hook) {
return 1;
}
ht = stmt->bound_params;
iterate:
if (ht) {
ZEND_HASH_FOREACH_PTR(ht, param) {
if (!stmt->methods->param_hook(stmt, param, event_type)) {
ret = 0;
break;
}
} ZEND_HASH_FOREACH_END();
}
if (ret && is_param) {
ht = stmt->bound_columns;
is_param = 0;
goto iterate;
}
return ret;
}
/* }}} */
bool pdo_stmt_describe_columns(pdo_stmt_t *stmt) /* {{{ */
{
int col;
stmt->columns = ecalloc(stmt->column_count, sizeof(struct pdo_column_data));
for (col = 0; col < stmt->column_count; col++) {
if (!stmt->methods->describer(stmt, col)) {
return false;
}
/* if we are applying case conversions on column names, do so now */
if (stmt->dbh->native_case != stmt->dbh->desired_case && stmt->dbh->desired_case != PDO_CASE_NATURAL) {
zend_string *orig_name = stmt->columns[col].name;
switch (stmt->dbh->desired_case) {
case PDO_CASE_LOWER:
stmt->columns[col].name = zend_string_tolower(orig_name);
zend_string_release(orig_name);
break;
case PDO_CASE_UPPER: {
stmt->columns[col].name = zend_string_separate(orig_name, 0);
char *s = ZSTR_VAL(stmt->columns[col].name);
while (*s != '\0') {
*s = toupper(*s);
s++;
}
break;
}
EMPTY_SWITCH_DEFAULT_CASE()
}
}
/* update the column index on named bound parameters */
if (stmt->bound_columns) {
struct pdo_bound_param_data *param;
if ((param = zend_hash_find_ptr(stmt->bound_columns,
stmt->columns[col].name)) != NULL) {
param->paramno = col;
}
}
}
return true;
}
/* }}} */
static void pdo_stmt_reset_columns(pdo_stmt_t *stmt) {
if (stmt->columns) {
int i;
struct pdo_column_data *cols = stmt->columns;
for (i = 0; i < stmt->column_count; i++) {
if (cols[i].name) {
zend_string_release_ex(cols[i].name, 0);
}
}
efree(stmt->columns);
}
stmt->columns = NULL;
stmt->column_count = 0;
}
/**
* Change the column count on the statement. If it differs from the previous one,
* discard existing columns information.
*/
PDO_API void php_pdo_stmt_set_column_count(pdo_stmt_t *stmt, int new_count)
{
/* Columns not yet "described". */
if (!stmt->columns) {
stmt->column_count = new_count;
return;
}
/* The column count has not changed: No need to reload columns description.
* Note: Do not handle attribute name change, without column count change. */
if (new_count == stmt->column_count) {
return;
}
/* Free previous columns to force reload description. */
pdo_stmt_reset_columns(stmt);
stmt->column_count = new_count;
}
static void get_lazy_object(pdo_stmt_t *stmt, zval *return_value) /* {{{ */
{
if (Z_ISUNDEF(stmt->lazy_object_ref)) {
pdo_row_t *row = ecalloc(1, sizeof(pdo_row_t));
row->stmt = stmt;
zend_object_std_init(&row->std, pdo_row_ce);
ZVAL_OBJ(&stmt->lazy_object_ref, &row->std);
GC_ADDREF(&stmt->std);
GC_DELREF(&row->std);
}
ZVAL_COPY(return_value, &stmt->lazy_object_ref);
}
/* }}} */
static void param_dtor(zval *el) /* {{{ */
{
struct pdo_bound_param_data *param = (struct pdo_bound_param_data *)Z_PTR_P(el);
/* tell the driver that it is going away */
if (param->stmt->methods->param_hook) {
param->stmt->methods->param_hook(param->stmt, param, PDO_PARAM_EVT_FREE);
}
if (param->name) {
zend_string_release_ex(param->name, 0);
}
if (!Z_ISUNDEF(param->parameter)) {
zval_ptr_dtor(¶m->parameter);
ZVAL_UNDEF(¶m->parameter);
}
if (!Z_ISUNDEF(param->driver_params)) {
zval_ptr_dtor(¶m->driver_params);
}
efree(param);
}
/* }}} */
static bool really_register_bound_param(struct pdo_bound_param_data *param, pdo_stmt_t *stmt, bool is_param) /* {{{ */
{
HashTable *hash;
zval *parameter;
struct pdo_bound_param_data *pparam = NULL;
hash = is_param ? stmt->bound_params : stmt->bound_columns;
if (!hash) {
ALLOC_HASHTABLE(hash);
zend_hash_init(hash, 13, NULL, param_dtor, 0);
if (is_param) {
stmt->bound_params = hash;
} else {
stmt->bound_columns = hash;
}
}
if (!Z_ISREF(param->parameter)) {
parameter = ¶m->parameter;
} else {
parameter = Z_REFVAL(param->parameter);
}
if (PDO_PARAM_TYPE(param->param_type) == PDO_PARAM_STR && param->max_value_len <= 0 && !Z_ISNULL_P(parameter)) {
if (!try_convert_to_string(parameter)) {
return 0;
}
} else if (PDO_PARAM_TYPE(param->param_type) == PDO_PARAM_INT && (Z_TYPE_P(parameter) == IS_FALSE || Z_TYPE_P(parameter) == IS_TRUE)) {
convert_to_long(parameter);
} else if (PDO_PARAM_TYPE(param->param_type) == PDO_PARAM_BOOL && Z_TYPE_P(parameter) == IS_LONG) {
convert_to_boolean(parameter);
}
param->stmt = stmt;
param->is_param = is_param;
if (Z_REFCOUNTED(param->driver_params)) {
Z_ADDREF(param->driver_params);
}
if (!is_param && param->name && stmt->columns) {
/* try to map the name to the column */
int i;
for (i = 0; i < stmt->column_count; i++) {
if (zend_string_equals(stmt->columns[i].name, param->name)) {
param->paramno = i;
break;
}
}
/* if you prepare and then execute passing an array of params keyed by names,
* then this will trigger, and we don't want that */
if (param->paramno == -1) {
/* Should this always be an Error? */
char *tmp;
/* TODO Error? */
spprintf(&tmp, 0, "Did not find column name '%s' in the defined columns; it will not be bound", ZSTR_VAL(param->name));
pdo_raise_impl_error(stmt->dbh, stmt, "HY000", tmp);
efree(tmp);
}
}
if (param->name) {
if (is_param && ZSTR_VAL(param->name)[0] != ':') {
zend_string *temp = zend_string_alloc(ZSTR_LEN(param->name) + 1, 0);
ZSTR_VAL(temp)[0] = ':';
memmove(ZSTR_VAL(temp) + 1, ZSTR_VAL(param->name), ZSTR_LEN(param->name) + 1);
param->name = temp;
} else {
param->name = zend_string_init(ZSTR_VAL(param->name), ZSTR_LEN(param->name), 0);
}
}
if (is_param && !rewrite_name_to_position(stmt, param)) {
if (param->name) {
zend_string_release_ex(param->name, 0);
param->name = NULL;
}
return 0;
}
/* ask the driver to perform any normalization it needs on the
* parameter name. Note that it is illegal for the driver to take
* a reference to param, as it resides in transient storage only
* at this time. */
if (stmt->methods->param_hook) {
if (!stmt->methods->param_hook(stmt, param, PDO_PARAM_EVT_NORMALIZE)) {
PDO_HANDLE_STMT_ERR();
if (param->name) {
zend_string_release_ex(param->name, 0);
param->name = NULL;
}
return 0;
}
}
/* delete any other parameter registered with this number.
* If the parameter is named, it will be removed and correctly
* disposed of by the hash_update call that follows */
if (param->paramno >= 0) {
zend_hash_index_del(hash, param->paramno);
}
/* allocate storage for the parameter, keyed by its "canonical" name */
if (param->name) {
pparam = zend_hash_update_mem(hash, param->name, param, sizeof(struct pdo_bound_param_data));
} else {
pparam = zend_hash_index_update_mem(hash, param->paramno, param, sizeof(struct pdo_bound_param_data));
}
/* tell the driver we just created a parameter */
if (stmt->methods->param_hook) {
if (!stmt->methods->param_hook(stmt, pparam, PDO_PARAM_EVT_ALLOC)) {
PDO_HANDLE_STMT_ERR();
/* undo storage allocation; the hash will free the parameter
* name if required */
if (pparam->name) {
zend_hash_del(hash, pparam->name);
} else {
zend_hash_index_del(hash, pparam->paramno);
}
/* param->parameter is freed by hash dtor */
ZVAL_UNDEF(¶m->parameter);
return 0;
}
}
return 1;
}
/* }}} */
/* {{{ Execute a prepared statement, optionally binding parameters */
PHP_METHOD(PDOStatement, execute)
{
zval *input_params = NULL;
int ret = 1;
ZEND_PARSE_PARAMETERS_START(0, 1)
Z_PARAM_OPTIONAL
Z_PARAM_ARRAY_OR_NULL(input_params)
ZEND_PARSE_PARAMETERS_END();
PHP_STMT_GET_OBJ;
PDO_STMT_CLEAR_ERR();
if (input_params) {
struct pdo_bound_param_data param;
zval *tmp;
zend_string *key = NULL;
zend_ulong num_index;
if (stmt->bound_params) {
zend_hash_destroy(stmt->bound_params);
FREE_HASHTABLE(stmt->bound_params);
stmt->bound_params = NULL;
}
ZEND_HASH_FOREACH_KEY_VAL(Z_ARRVAL_P(input_params), num_index, key, tmp) {
memset(¶m, 0, sizeof(param));
if (key) {
/* yes this is correct. we don't want to count the null byte. ask wez */
param.name = key;
param.paramno = -1;
} else {
/* we're okay to be zero based here */
/* num_index is unsignend */
param.paramno = num_index;
}
param.param_type = PDO_PARAM_STR;
ZVAL_COPY(¶m.parameter, tmp);
if (!really_register_bound_param(¶m, stmt, 1)) {
if (!Z_ISUNDEF(param.parameter)) {
zval_ptr_dtor(¶m.parameter);
}
RETURN_FALSE;
}
} ZEND_HASH_FOREACH_END();
}
if (PDO_PLACEHOLDER_NONE == stmt->supports_placeholders) {
/* handle the emulated parameter binding,
* stmt->active_query_string holds the query with binds expanded and
* quoted.
*/
/* string is leftover from previous calls so PDOStatement::debugDumpParams() can access */
if (stmt->active_query_string) {
zend_string_release(stmt->active_query_string);
stmt->active_query_string = NULL;
}
ret = pdo_parse_params(stmt, stmt->query_string, &stmt->active_query_string);
if (ret == 0) {
/* no changes were made */
stmt->active_query_string = zend_string_copy(stmt->query_string);
ret = 1;
} else if (ret == -1) {
/* something broke */
RETURN_FALSE;
}
} else if (!dispatch_param_event(stmt, PDO_PARAM_EVT_EXEC_PRE)) {
PDO_HANDLE_STMT_ERR();
RETURN_FALSE;
}
if (stmt->methods->executer(stmt)) {
if (!stmt->executed) {
/* this is the first execute */
if (stmt->dbh->alloc_own_columns && !stmt->columns) {
/* for "big boy" drivers, we need to allocate memory to fetch
* the results into, so lets do that now */
ret = pdo_stmt_describe_columns(stmt);
}
stmt->executed = 1;
}
if (ret && !dispatch_param_event(stmt, PDO_PARAM_EVT_EXEC_POST)) {
PDO_HANDLE_STMT_ERR();
RETURN_FALSE;
}
RETURN_BOOL(ret);
}
PDO_HANDLE_STMT_ERR();
RETURN_FALSE;
}
/* }}} */
static inline void fetch_value(pdo_stmt_t *stmt, zval *dest, int colno, enum pdo_param_type *type_override) /* {{{ */
{
if (colno < 0) {
zend_value_error("Column index must be greater than or equal to 0");
ZVAL_NULL(dest);
return;
}
if (colno >= stmt->column_count) {
zend_value_error("Invalid column index");
ZVAL_NULL(dest);
return;
}
ZVAL_NULL(dest);
stmt->methods->get_col(stmt, colno, dest, type_override);
if (Z_TYPE_P(dest) == IS_STRING && Z_STRLEN_P(dest) == 0
&& stmt->dbh->oracle_nulls == PDO_NULL_EMPTY_STRING) {
zval_ptr_dtor_str(dest);
ZVAL_NULL(dest);
}
/* If stringification is requested, override with PDO_PARAM_STR. */
enum pdo_param_type pdo_param_str = PDO_PARAM_STR;
if (stmt->dbh->stringify) {
type_override = &pdo_param_str;
}
if (type_override && Z_TYPE_P(dest) != IS_NULL) {
switch (*type_override) {
case PDO_PARAM_INT:
convert_to_long(dest);
break;
case PDO_PARAM_BOOL:
convert_to_boolean(dest);
break;
case PDO_PARAM_STR:
if (Z_TYPE_P(dest) == IS_FALSE) {
/* Return "0" rather than "", because this is what database drivers that
* don't have a dedicated boolean type would return. */
zval_ptr_dtor_nogc(dest);
ZVAL_INTERNED_STR(dest, ZSTR_CHAR('0'));
} else if (Z_TYPE_P(dest) == IS_RESOURCE) {
/* Convert LOB stream to string */
php_stream *stream;
php_stream_from_zval_no_verify(stream, dest);
zend_string *str = php_stream_copy_to_mem(stream, PHP_STREAM_COPY_ALL, 0);
zval_ptr_dtor_nogc(dest);
if (str == NULL) {
ZVAL_EMPTY_STRING(dest);
} else {
ZVAL_STR(dest, str);
}
} else {
convert_to_string(dest);
}
break;
case PDO_PARAM_NULL:
convert_to_null(dest);
break;
case PDO_PARAM_LOB:
if (Z_TYPE_P(dest) == IS_STRING) {
php_stream *stream =
php_stream_memory_open(TEMP_STREAM_READONLY, Z_STR_P(dest));
zval_ptr_dtor_str(dest);
php_stream_to_zval(stream, dest);
}
break;
default:
break;
}
}
if (Z_TYPE_P(dest) == IS_NULL && stmt->dbh->oracle_nulls == PDO_NULL_TO_STRING) {
ZVAL_EMPTY_STRING(dest);
}
}
/* }}} */
static bool do_fetch_common(pdo_stmt_t *stmt, enum pdo_fetch_orientation ori, zend_long offset) /* {{{ */
{
if (!stmt->executed) {
return 0;
}
if (!dispatch_param_event(stmt, PDO_PARAM_EVT_FETCH_PRE)) {
return 0;
}
if (!stmt->methods->fetcher(stmt, ori, offset)) {
return 0;
}
/* some drivers might need to describe the columns now */
if (!stmt->columns && !pdo_stmt_describe_columns(stmt)) {
return 0;
}
if (!dispatch_param_event(stmt, PDO_PARAM_EVT_FETCH_POST)) {
return 0;
}
if (stmt->bound_columns) {
/* update those bound column variables now */
struct pdo_bound_param_data *param;
ZEND_HASH_FOREACH_PTR(stmt->bound_columns, param) {
if (param->paramno >= 0) {
if (!Z_ISREF(param->parameter)) {
continue;
}
/* delete old value */
zval_ptr_dtor(Z_REFVAL(param->parameter));
/* set new value */
fetch_value(stmt, Z_REFVAL(param->parameter), param->paramno, ¶m->param_type);
/* TODO: some smart thing that avoids duplicating the value in the
* general loop below. For now, if you're binding output columns,
* it's better to use LAZY or BOUND fetches if you want to shave
* off those cycles */
}
} ZEND_HASH_FOREACH_END();
}
return 1;
}
/* }}} */
static bool do_fetch_class_prepare(pdo_stmt_t *stmt) /* {{{ */
{
zend_class_entry *ce = stmt->fetch.cls.ce;
zend_fcall_info *fci = &stmt->fetch.cls.fci;
zend_fcall_info_cache *fcc = &stmt->fetch.cls.fcc;
fci->size = sizeof(zend_fcall_info);
if (!ce) {
stmt->fetch.cls.ce = ZEND_STANDARD_CLASS_DEF_PTR;
ce = ZEND_STANDARD_CLASS_DEF_PTR;
}
if (ce->constructor) {
ZVAL_UNDEF(&fci->function_name);
fci->retval = &stmt->fetch.cls.retval;
fci->param_count = 0;
fci->params = NULL;
zend_fcall_info_args_ex(fci, ce->constructor, &stmt->fetch.cls.ctor_args);
fcc->function_handler = ce->constructor;
fcc->called_scope = ce;
return 1;
} else if (!Z_ISUNDEF(stmt->fetch.cls.ctor_args)) {
zend_throw_error(NULL, "User-supplied statement does not accept constructor arguments");
return 0;
} else {
return 1; /* no ctor no args is also ok */
}
}
/* }}} */
static bool make_callable_ex(pdo_stmt_t *stmt, zval *callable, zend_fcall_info * fci, zend_fcall_info_cache * fcc, int num_args) /* {{{ */
{
char *is_callable_error = NULL;
if (zend_fcall_info_init(callable, 0, fci, fcc, NULL, &is_callable_error) == FAILURE) {
if (is_callable_error) {
zend_type_error("%s", is_callable_error);
efree(is_callable_error);
} else {
zend_type_error("User-supplied function must be a valid callback");
}
return false;
}
if (is_callable_error) {
/* Possible error message */
efree(is_callable_error);
}
fci->param_count = num_args; /* probably less */
fci->params = safe_emalloc(sizeof(zval), num_args, 0);
return true;
}
/* }}} */
static bool do_fetch_func_prepare(pdo_stmt_t *stmt) /* {{{ */
{
zend_fcall_info *fci = &stmt->fetch.cls.fci;
zend_fcall_info_cache *fcc = &stmt->fetch.cls.fcc;
if (!make_callable_ex(stmt, &stmt->fetch.func.function, fci, fcc, stmt->column_count)) {
return false;
} else {
stmt->fetch.func.values = safe_emalloc(sizeof(zval), stmt->column_count, 0);
return true;
}
}
/* }}} */
static void do_fetch_opt_finish(pdo_stmt_t *stmt, int free_ctor_agrs) /* {{{ */
{
/* fci.size is used to check if it is valid */
if (stmt->fetch.cls.fci.size && stmt->fetch.cls.fci.params) {
if (!Z_ISUNDEF(stmt->fetch.cls.ctor_args)) {
/* Added to free constructor arguments */
zend_fcall_info_args_clear(&stmt->fetch.cls.fci, 1);
} else {
efree(stmt->fetch.cls.fci.params);
}
stmt->fetch.cls.fci.params = NULL;
}
stmt->fetch.cls.fci.size = 0;
if (!Z_ISUNDEF(stmt->fetch.cls.ctor_args) && free_ctor_agrs) {
zval_ptr_dtor(&stmt->fetch.cls.ctor_args);
ZVAL_UNDEF(&stmt->fetch.cls.ctor_args);
stmt->fetch.cls.fci.param_count = 0;
}
if (stmt->fetch.func.values) {
efree(stmt->fetch.func.values);
stmt->fetch.func.values = NULL;
}
}
/* }}} */
/* perform a fetch.
* Stores values into return_value according to HOW. */
static bool do_fetch(pdo_stmt_t *stmt, zval *return_value, enum pdo_fetch_type how, enum pdo_fetch_orientation ori, zend_long offset, zval *return_all) /* {{{ */
{
int flags, idx, old_arg_count = 0;
zend_class_entry *ce = NULL, *old_ce = NULL;
zval grp_val, *pgrp, retval, old_ctor_args = {{0}, {0}, {0}};
int colno;
int i = 0;
if (how == PDO_FETCH_USE_DEFAULT) {
how = stmt->default_fetch_type;
}
flags = how & PDO_FETCH_FLAGS;
how = how & ~PDO_FETCH_FLAGS;
if (!do_fetch_common(stmt, ori, offset)) {
return 0;
}
if (how == PDO_FETCH_BOUND) {
RETVAL_TRUE;
return 1;
}
if ((flags & PDO_FETCH_GROUP) && stmt->fetch.column == -1) {
colno = 1;
} else {
colno = stmt->fetch.column;
}
if (how == PDO_FETCH_LAZY) {
get_lazy_object(stmt, return_value);
return 1;
}
RETVAL_FALSE;
switch (how) {
case PDO_FETCH_USE_DEFAULT:
case PDO_FETCH_ASSOC:
case PDO_FETCH_BOTH:
case PDO_FETCH_NUM:
case PDO_FETCH_NAMED:
if (!return_all) {
array_init_size(return_value, stmt->column_count);
} else {
array_init(return_value);
}
break;
case PDO_FETCH_KEY_PAIR:
if (stmt->column_count != 2) {
/* TODO: Error? */
pdo_raise_impl_error(stmt->dbh, stmt, "HY000", "PDO::FETCH_KEY_PAIR fetch mode requires the result set to contain exactly 2 columns.");
return 0;
}
if (!return_all) {
array_init(return_value);
}
break;
case PDO_FETCH_COLUMN:
if (colno < 0 ) {
zend_value_error("Column index must be greater than or equal to 0");
return false;
}
if (colno >= stmt->column_count) {
zend_value_error("Invalid column index");
return false;
}
if (flags == PDO_FETCH_GROUP && stmt->fetch.column == -1) {
fetch_value(stmt, return_value, 1, NULL);
} else if (flags == PDO_FETCH_GROUP && colno) {
fetch_value(stmt, return_value, 0, NULL);
} else {
fetch_value(stmt, return_value, colno, NULL);
}
if (!return_all) {
return 1;
}
break;
case PDO_FETCH_OBJ:
object_init_ex(return_value, ZEND_STANDARD_CLASS_DEF_PTR);
break;
case PDO_FETCH_CLASS:
if (flags & PDO_FETCH_CLASSTYPE) {
zval val;
zend_class_entry *cep;
old_ce = stmt->fetch.cls.ce;
ZVAL_COPY_VALUE(&old_ctor_args, &stmt->fetch.cls.ctor_args);
old_arg_count = stmt->fetch.cls.fci.param_count;
do_fetch_opt_finish(stmt, 0);
fetch_value(stmt, &val, i++, NULL);
if (Z_TYPE(val) != IS_NULL) {
if (!try_convert_to_string(&val)) {
return 0;
}
if ((cep = zend_lookup_class(Z_STR(val))) == NULL) {
stmt->fetch.cls.ce = ZEND_STANDARD_CLASS_DEF_PTR;
} else {
stmt->fetch.cls.ce = cep;
}
}
do_fetch_class_prepare(stmt);
zval_ptr_dtor_str(&val);
}
ce = stmt->fetch.cls.ce;
/* TODO: Make this an assertion and ensure this is true higher up? */
if (!ce) {
/* TODO Error? */
pdo_raise_impl_error(stmt->dbh, stmt, "HY000", "No fetch class specified");
return 0;
}
if ((flags & PDO_FETCH_SERIALIZE) == 0) {
if (UNEXPECTED(object_init_ex(return_value, ce) != SUCCESS)) {
return 0;
}
if (!stmt->fetch.cls.fci.size) {
if (!do_fetch_class_prepare(stmt)) {
zval_ptr_dtor(return_value);
return 0;
}
}
if (ce->constructor && (flags & PDO_FETCH_PROPS_LATE)) {
stmt->fetch.cls.fci.object = Z_OBJ_P(return_value);
stmt->fetch.cls.fcc.object = Z_OBJ_P(return_value);
if (zend_call_function(&stmt->fetch.cls.fci, &stmt->fetch.cls.fcc) == FAILURE) {
/* TODO Error? */
pdo_raise_impl_error(stmt->dbh, stmt, "HY000", "could not call class constructor");
return 0;
} else {
if (!Z_ISUNDEF(stmt->fetch.cls.retval)) {
zval_ptr_dtor(&stmt->fetch.cls.retval);
ZVAL_UNDEF(&stmt->fetch.cls.retval);
}
}
}
}
break;
case PDO_FETCH_INTO:
/* TODO: Make this an assertion and ensure this is true higher up? */
if (Z_ISUNDEF(stmt->fetch.into)) {
/* TODO ArgumentCountError? */
pdo_raise_impl_error(stmt->dbh, stmt, "HY000", "No fetch-into object specified.");
return 0;
break;
}
ZVAL_COPY(return_value, &stmt->fetch.into);
if (Z_OBJ_P(return_value)->ce == ZEND_STANDARD_CLASS_DEF_PTR) {
how = PDO_FETCH_OBJ;
}
break;
case PDO_FETCH_FUNC:
/* TODO: Make this an assertion and ensure this is true higher up? */
if (Z_ISUNDEF(stmt->fetch.func.function)) {
/* TODO ArgumentCountError? */
pdo_raise_impl_error(stmt->dbh, stmt, "HY000", "No fetch function specified");
return 0;
}
if (!stmt->fetch.func.fci.size) {
if (!do_fetch_func_prepare(stmt))
{
return 0;
}
}
break;
EMPTY_SWITCH_DEFAULT_CASE();
}
if (return_all && how != PDO_FETCH_KEY_PAIR) {
if (flags == PDO_FETCH_GROUP && how == PDO_FETCH_COLUMN && stmt->fetch.column > 0) {
fetch_value(stmt, &grp_val, colno, NULL);
} else {
fetch_value(stmt, &grp_val, i, NULL);
}
convert_to_string(&grp_val);
if (how == PDO_FETCH_COLUMN) {
i = stmt->column_count; /* no more data to fetch */
} else {
i++;
}
}
for (idx = 0; i < stmt->column_count; i++, idx++) {
zval val;
fetch_value(stmt, &val, i, NULL);
switch (how) {
case PDO_FETCH_ASSOC:
zend_symtable_update(Z_ARRVAL_P(return_value), stmt->columns[i].name, &val);
break;
case PDO_FETCH_KEY_PAIR:
{
zval tmp;
fetch_value(stmt, &tmp, ++i, NULL);
if (Z_TYPE(val) == IS_LONG) {
zend_hash_index_update((return_all ? Z_ARRVAL_P(return_all) : Z_ARRVAL_P(return_value)), Z_LVAL(val), &tmp);
} else {
convert_to_string(&val);
zend_symtable_update((return_all ? Z_ARRVAL_P(return_all) : Z_ARRVAL_P(return_value)), Z_STR(val), &tmp);
}
zval_ptr_dtor(&val);
return 1;
}
break;
case PDO_FETCH_USE_DEFAULT:
case PDO_FETCH_BOTH:
zend_symtable_update(Z_ARRVAL_P(return_value), stmt->columns[i].name, &val);
if (zend_hash_index_add(Z_ARRVAL_P(return_value), i, &val) != NULL) {
Z_TRY_ADDREF(val);
}
break;
case PDO_FETCH_NAMED:
/* already have an item with this name? */
{
zval *curr_val;
if ((curr_val = zend_hash_find(Z_ARRVAL_P(return_value), stmt->columns[i].name))) {
zval arr;
if (Z_TYPE_P(curr_val) != IS_ARRAY) {
/* a little bit of black magic here:
* we're creating a new array and swapping it for the
* zval that's already stored in the hash under the name
* we want. We then add that zval to the array.
* This is effectively the same thing as:
* if (!is_array($hash[$name])) {
* $hash[$name] = array($hash[$name]);
* }
* */
zval cur;
array_init(&arr);
ZVAL_COPY_VALUE(&cur, curr_val);
ZVAL_COPY_VALUE(curr_val, &arr);
zend_hash_next_index_insert_new(Z_ARRVAL(arr), &cur);
} else {
ZVAL_COPY_VALUE(&arr, curr_val);
}
zend_hash_next_index_insert_new(Z_ARRVAL(arr), &val);
} else {
zend_hash_update(Z_ARRVAL_P(return_value), stmt->columns[i].name, &val);
}
}
break;
case PDO_FETCH_NUM:
zend_hash_next_index_insert_new(Z_ARRVAL_P(return_value), &val);
break;
case PDO_FETCH_OBJ:
case PDO_FETCH_INTO:
zend_update_property_ex(NULL, Z_OBJ_P(return_value),
stmt->columns[i].name,
&val);
zval_ptr_dtor(&val);
break;
case PDO_FETCH_CLASS:
if ((flags & PDO_FETCH_SERIALIZE) == 0 || idx) {
zend_update_property_ex(ce, Z_OBJ_P(return_value),
stmt->columns[i].name,
&val);
zval_ptr_dtor(&val);
} else {
if (!ce->unserialize) {
zval_ptr_dtor(&val);
pdo_raise_impl_error(stmt->dbh, stmt, "HY000", "cannot unserialize class");
return 0;