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pdo_dbh.c
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pdo_dbh.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 Database Handle Class */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "php_pdo.h"
#include "php_pdo_driver.h"
#include "php_pdo_int.h"
#include "zend_attributes.h"
#include "zend_exceptions.h"
#include "zend_object_handlers.h"
#include "zend_hash.h"
#include "pdo_dbh_arginfo.h"
#include "zend_observer.h"
#include "zend_extensions.h"
static bool pdo_dbh_attribute_set(pdo_dbh_t *dbh, zend_long attr, zval *value);
void pdo_throw_exception(unsigned int driver_errcode, char *driver_errmsg, pdo_error_type *pdo_error)
{
zval error_info,pdo_exception;
char *pdo_exception_message;
object_init_ex(&pdo_exception, php_pdo_get_exception());
array_init(&error_info);
add_next_index_string(&error_info, *pdo_error);
add_next_index_long(&error_info, driver_errcode);
add_next_index_string(&error_info, driver_errmsg);
spprintf(&pdo_exception_message, 0,"SQLSTATE[%s] [%d] %s",*pdo_error, driver_errcode, driver_errmsg);
zend_update_property(php_pdo_get_exception(), Z_OBJ(pdo_exception), "errorInfo", sizeof("errorInfo")-1, &error_info);
zend_update_property_long(php_pdo_get_exception(), Z_OBJ(pdo_exception), "code", sizeof("code")-1, driver_errcode);
zend_update_property_string(
php_pdo_get_exception(),
Z_OBJ(pdo_exception),
"message",
sizeof("message")-1,
pdo_exception_message
);
efree(pdo_exception_message);
zval_ptr_dtor(&error_info);
zend_throw_exception_object(&pdo_exception);
}
void pdo_raise_impl_error(pdo_dbh_t *dbh, pdo_stmt_t *stmt, pdo_error_type sqlstate, const char *supp) /* {{{ */
{
pdo_error_type *pdo_err = &dbh->error_code;
char *message = NULL;
const char *msg;
if (dbh->error_mode == PDO_ERRMODE_SILENT) {
#if 0
/* BUG: if user is running in silent mode and hits an error at the driver level
* when they use the PDO methods to call up the error information, they may
* get bogus information */
return;
#endif
}
if (stmt) {
pdo_err = &stmt->error_code;
}
memcpy(*pdo_err, sqlstate, sizeof(pdo_error_type));
/* hash sqlstate to error messages */
msg = pdo_sqlstate_state_to_description(*pdo_err);
if (!msg) {
msg = "<<Unknown error>>";
}
if (supp) {
spprintf(&message, 0, "SQLSTATE[%s]: %s: %s", *pdo_err, msg, supp);
} else {
spprintf(&message, 0, "SQLSTATE[%s]: %s", *pdo_err, msg);
}
if (dbh->error_mode != PDO_ERRMODE_EXCEPTION) {
php_error_docref(NULL, E_WARNING, "%s", message);
} else {
zval ex, info;
zend_class_entry *pdo_ex = php_pdo_get_exception();
object_init_ex(&ex, pdo_ex);
zend_update_property_string(zend_ce_exception, Z_OBJ(ex), "message", sizeof("message")-1, message);
zend_update_property_string(zend_ce_exception, Z_OBJ(ex), "code", sizeof("code")-1, *pdo_err);
array_init(&info);
add_next_index_string(&info, *pdo_err);
add_next_index_long(&info, 0);
zend_update_property(pdo_ex, Z_OBJ(ex), "errorInfo", sizeof("errorInfo")-1, &info);
zval_ptr_dtor(&info);
zend_throw_exception_object(&ex);
}
if (message) {
efree(message);
}
}
/* }}} */
PDO_API void pdo_handle_error(pdo_dbh_t *dbh, pdo_stmt_t *stmt) /* {{{ */
{
pdo_error_type *pdo_err = &dbh->error_code;
const char *msg = "<<Unknown>>";
char *supp = NULL;
zend_long native_code = 0;
zend_string *message = NULL;
zval info;
if (dbh->error_mode == PDO_ERRMODE_SILENT) {
return;
}
if (stmt) {
pdo_err = &stmt->error_code;
}
/* hash sqlstate to error messages */
msg = pdo_sqlstate_state_to_description(*pdo_err);
if (!msg) {
msg = "<<Unknown error>>";
}
ZVAL_UNDEF(&info);
if (dbh->methods->fetch_err) {
zval *item;
array_init(&info);
add_next_index_string(&info, *pdo_err);
dbh->methods->fetch_err(dbh, stmt, &info);
if ((item = zend_hash_index_find(Z_ARRVAL(info), 1)) != NULL
&& Z_TYPE_P(item) == IS_LONG) {
native_code = Z_LVAL_P(item);
}
if ((item = zend_hash_index_find(Z_ARRVAL(info), 2)) != NULL) {
supp = estrndup(Z_STRVAL_P(item), Z_STRLEN_P(item));
}
}
if (native_code && supp) {
message = strpprintf(0, "SQLSTATE[%s]: %s: " ZEND_LONG_FMT " %s", *pdo_err, msg, native_code, supp);
} else if (supp) {
message = strpprintf(0, "SQLSTATE[%s]: %s: %s", *pdo_err, msg, supp);
} else {
message = strpprintf(0, "SQLSTATE[%s]: %s", *pdo_err, msg);
}
if (dbh->error_mode == PDO_ERRMODE_WARNING) {
php_error_docref(NULL, E_WARNING, "%s", ZSTR_VAL(message));
} else if (EG(exception) == NULL) {
zval ex;
zend_class_entry *pdo_ex = php_pdo_get_exception();
object_init_ex(&ex, pdo_ex);
zend_update_property_str(zend_ce_exception, Z_OBJ(ex), "message", sizeof("message") - 1, message);
zend_update_property_string(zend_ce_exception, Z_OBJ(ex), "code", sizeof("code") - 1, *pdo_err);
if (!Z_ISUNDEF(info)) {
zend_update_property(pdo_ex, Z_OBJ(ex), "errorInfo", sizeof("errorInfo") - 1, &info);
}
zend_throw_exception_object(&ex);
}
if (!Z_ISUNDEF(info)) {
zval_ptr_dtor(&info);
}
zend_string_release_ex(message, false);
if (supp) {
efree(supp);
}
}
/* }}} */
static char *dsn_from_uri(char *uri, char *buf, size_t buflen) /* {{{ */
{
php_stream *stream;
char *dsn = NULL;
stream = php_stream_open_wrapper(uri, "rb", REPORT_ERRORS, NULL);
if (stream) {
dsn = php_stream_get_line(stream, buf, buflen, NULL);
php_stream_close(stream);
}
return dsn;
}
/* }}} */
static bool create_driver_specific_pdo_object(pdo_driver_t *driver, zend_class_entry *called_scope, zval *new_object)
{
zend_class_entry *ce;
zend_class_entry *ce_based_on_driver_name = NULL, *ce_based_on_called_object = NULL;
ce_based_on_driver_name = zend_hash_str_find_ptr(&pdo_driver_specific_ce_hash, driver->driver_name, driver->driver_name_len);
ZEND_HASH_MAP_FOREACH_PTR(&pdo_driver_specific_ce_hash, ce) {
if (called_scope != pdo_dbh_ce && instanceof_function(called_scope, ce)) {
ce_based_on_called_object = called_scope;
break;
}
} ZEND_HASH_FOREACH_END();
if (ce_based_on_called_object) {
if (ce_based_on_driver_name) {
if (instanceof_function(ce_based_on_called_object, ce_based_on_driver_name) == false) {
zend_throw_exception_ex(pdo_exception_ce, 0,
"%s::connect() cannot be called when connecting to the \"%s\" driver, "
"either %s::connect() or PDO::connect() must be called instead",
ZSTR_VAL(called_scope->name), driver->driver_name, ZSTR_VAL(ce_based_on_driver_name->name));
return false;
}
/* A driver-specific implementation was instantiated via the connect() method of the appropriate driver class */
object_init_ex(new_object, ce_based_on_called_object);
return true;
} else {
zend_throw_exception_ex(pdo_exception_ce, 0,
"%s::connect() cannot be called when connecting to an unknown driver, "
"PDO::connect() must be called instead",
ZSTR_VAL(called_scope->name));
return false;
}
}
if (ce_based_on_driver_name) {
if (called_scope != pdo_dbh_ce) {
/* A driver-specific implementation was instantiated via the connect method of a wrong driver class */
zend_throw_exception_ex(pdo_exception_ce, 0,
"%s::connect() cannot be called when connecting to the \"%s\" driver, "
"either %s::connect() or PDO::connect() must be called instead",
ZSTR_VAL(called_scope->name), driver->driver_name, ZSTR_VAL(ce_based_on_driver_name->name));
return false;
}
/* A driver-specific implementation was instantiated via PDO::__construct() */
object_init_ex(new_object, ce_based_on_driver_name);
} else {
/* No driver-specific implementation found */
object_init_ex(new_object, called_scope);
}
return true;
}
static void internal_construct(INTERNAL_FUNCTION_PARAMETERS, zend_object *object, zend_class_entry *current_scope, zval *new_zval_object)
{
pdo_dbh_t *dbh = NULL;
bool is_persistent = 0;
char *data_source;
size_t data_source_len;
char *colon;
char *username=NULL, *password=NULL;
size_t usernamelen, passwordlen;
pdo_driver_t *driver = NULL;
zval *options = NULL;
char alt_dsn[512];
int call_factory = 1;
zend_error_handling zeh;
ZEND_PARSE_PARAMETERS_START(1, 4)
Z_PARAM_STRING(data_source, data_source_len)
Z_PARAM_OPTIONAL
Z_PARAM_STRING_OR_NULL(username, usernamelen)
Z_PARAM_STRING_OR_NULL(password, passwordlen)
Z_PARAM_ARRAY_OR_NULL(options)
ZEND_PARSE_PARAMETERS_END();
/* parse the data source name */
colon = strchr(data_source, ':');
if (!colon) {
/* let's see if this string has a matching dsn in the php.ini */
char *ini_dsn = NULL;
snprintf(alt_dsn, sizeof(alt_dsn), "pdo.dsn.%s", data_source);
if (FAILURE == cfg_get_string(alt_dsn, &ini_dsn)) {
zend_argument_error(php_pdo_get_exception(), 1, "must be a valid data source name");
RETURN_THROWS();
}
data_source = ini_dsn;
colon = strchr(data_source, ':');
if (!colon) {
zend_throw_exception_ex(php_pdo_get_exception(), 0, "invalid data source name (via INI: %s)", alt_dsn);
RETURN_THROWS();
}
}
if (!strncmp(data_source, "uri:", sizeof("uri:")-1)) {
/* the specified URI holds connection details */
data_source = dsn_from_uri(data_source + sizeof("uri:")-1, alt_dsn, sizeof(alt_dsn));
if (!data_source) {
zend_argument_error(php_pdo_get_exception(), 1, "must be a valid data source URI");
RETURN_THROWS();
}
colon = strchr(data_source, ':');
if (!colon) {
zend_argument_error(php_pdo_get_exception(), 1, "must be a valid data source name (via URI)");
RETURN_THROWS();
}
}
driver = pdo_find_driver(data_source, colon - data_source);
if (!driver) {
/* NB: don't want to include the data_source in the error message as
* it might contain a password */
zend_throw_exception_ex(php_pdo_get_exception(), 0, "could not find driver");
RETURN_THROWS();
}
if (new_zval_object != NULL) {
ZEND_ASSERT((driver->driver_name != NULL) && "PDO driver name is null");
if (!create_driver_specific_pdo_object(driver, current_scope, new_zval_object)) {
RETURN_THROWS();
}
dbh = Z_PDO_DBH_P(new_zval_object);
} else {
dbh = php_pdo_dbh_fetch_inner(object);
}
/* is this supposed to be a persistent connection ? */
if (options) {
int plen = 0;
char *hashkey = NULL;
zend_resource *le;
pdo_dbh_t *pdbh = NULL;
zval *v;
if ((v = zend_hash_index_find_deref(Z_ARRVAL_P(options), PDO_ATTR_PERSISTENT)) != NULL) {
if (Z_TYPE_P(v) == IS_STRING &&
!is_numeric_string(Z_STRVAL_P(v), Z_STRLEN_P(v), NULL, NULL, 0) && Z_STRLEN_P(v) > 0) {
/* user specified key */
plen = spprintf(&hashkey, 0, "PDO:DBH:DSN=%s:%s:%s:%s", data_source,
username ? username : "",
password ? password : "",
Z_STRVAL_P(v));
is_persistent = 1;
} else {
is_persistent = zval_get_long(v) ? 1 : 0;
plen = spprintf(&hashkey, 0, "PDO:DBH:DSN=%s:%s:%s", data_source,
username ? username : "",
password ? password : "");
}
}
if (is_persistent) {
/* let's see if we have one cached.... */
if ((le = zend_hash_str_find_ptr(&EG(persistent_list), hashkey, plen)) != NULL) {
if (le->type == php_pdo_list_entry()) {
pdbh = (pdo_dbh_t*)le->ptr;
/* is the connection still alive ? */
if (pdbh->methods->check_liveness && FAILURE == (pdbh->methods->check_liveness)(pdbh)) {
/* nope... need to kill it */
pdbh->refcount--;
zend_list_close(le);
pdbh = NULL;
}
}
}
if (pdbh) {
call_factory = 0;
} else {
/* need a brand new pdbh */
pdbh = pecalloc(1, sizeof(*pdbh), 1);
pdbh->refcount = 1;
pdbh->is_persistent = 1;
pdbh->persistent_id = pemalloc(plen + 1, 1);
memcpy((char *)pdbh->persistent_id, hashkey, plen+1);
pdbh->persistent_id_len = plen;
pdbh->def_stmt_ce = dbh->def_stmt_ce;
}
}
if (pdbh) {
efree(dbh);
/* switch over to the persistent one */
php_pdo_dbh_fetch_object(object)->inner = pdbh;
pdbh->refcount++;
dbh = pdbh;
}
if (hashkey) {
efree(hashkey);
}
}
if (call_factory) {
dbh->data_source_len = strlen(colon + 1);
dbh->data_source = (const char*)pestrdup(colon + 1, is_persistent);
dbh->username = username ? pestrdup(username, is_persistent) : NULL;
dbh->password = password ? pestrdup(password, is_persistent) : NULL;
dbh->default_fetch_type = PDO_FETCH_BOTH;
}
dbh->auto_commit = pdo_attr_lval(options, PDO_ATTR_AUTOCOMMIT, 1);
dbh->error_mode = pdo_attr_lval(options, PDO_ATTR_ERRMODE, PDO_ERRMODE_EXCEPTION);
if (!dbh->data_source || (username && !dbh->username) || (password && !dbh->password)) {
php_error_docref(NULL, E_ERROR, "Out of memory");
}
/* pdo_dbh_attribute_set() can emit a Warning if the ERR_MODE is set to warning
* As we are in a constructor we override the behaviour by replacing the error handler */
zend_replace_error_handling(EH_THROW, pdo_exception_ce, &zeh);
if (!call_factory) {
/* we got a persistent guy from our cache */
goto options;
}
if (driver->db_handle_factory(dbh, options)) {
/* all set */
if (is_persistent) {
/* register in the persistent list etc. */
/* we should also need to replace the object store entry,
since it was created with emalloc */
if ((zend_register_persistent_resource(
(char*)dbh->persistent_id, dbh->persistent_id_len, dbh, php_pdo_list_entry())) == NULL) {
php_error_docref(NULL, E_ERROR, "Failed to register persistent entry");
}
}
dbh->driver = driver;
options:
if (options) {
zval *attr_value;
zend_ulong long_key;
zend_string *str_key = NULL;
ZEND_HASH_FOREACH_KEY_VAL(Z_ARRVAL_P(options), long_key, str_key, attr_value) {
if (str_key) {
continue;
}
ZVAL_DEREF(attr_value);
/* TODO: Should the constructor fail when the attribute cannot be set? */
pdo_dbh_attribute_set(dbh, long_key, attr_value);
} ZEND_HASH_FOREACH_END();
}
zend_restore_error_handling(&zeh);
return;
}
/* the connection failed; things will tidy up in free_storage */
if (is_persistent) {
dbh->refcount--;
}
/* XXX raise exception */
zend_restore_error_handling(&zeh);
if (!EG(exception)) {
zend_throw_exception(pdo_exception_ce, "Constructor failed", 0);
}
}
/* {{{ */
PHP_METHOD(PDO, __construct)
{
internal_construct(INTERNAL_FUNCTION_PARAM_PASSTHRU, Z_OBJ(EX(This)), EX(This).value.ce, NULL);
}
/* }}} */
/* {{{ */
PHP_METHOD(PDO, connect)
{
internal_construct(INTERNAL_FUNCTION_PARAM_PASSTHRU, Z_OBJ(EX(This)), EX(This).value.ce, return_value);
}
/* }}} */
static zval *pdo_stmt_instantiate(pdo_dbh_t *dbh, zval *object, zend_class_entry *dbstmt_ce, zval *ctor_args) /* {{{ */
{
if (!Z_ISUNDEF_P(ctor_args)) {
/* This implies an error within PDO if this does not hold */
ZEND_ASSERT(Z_TYPE_P(ctor_args) == IS_ARRAY);
if (!dbstmt_ce->constructor) {
zend_throw_error(NULL, "User-supplied statement does not accept constructor arguments");
return NULL;
}
}
if (UNEXPECTED(object_init_ex(object, dbstmt_ce) != SUCCESS)) {
if (EXPECTED(!EG(exception))) {
zend_throw_error(NULL, "Cannot instantiate user-supplied statement class");
}
return NULL;
}
return object;
} /* }}} */
static void pdo_stmt_construct(pdo_stmt_t *stmt, zval *object, zend_class_entry *dbstmt_ce, HashTable *ctor_args)
{
zval query_string;
zend_string *key;
ZVAL_STR(&query_string, stmt->query_string);
key = ZSTR_INIT_LITERAL("queryString", 0);
zend_std_write_property(Z_OBJ_P(object), key, &query_string, NULL);
zend_string_release_ex(key, 0);
if (dbstmt_ce->constructor) {
zend_call_known_function(dbstmt_ce->constructor, Z_OBJ_P(object), Z_OBJCE_P(object), NULL, 0, NULL, ctor_args);
}
}
/* {{{ Prepares a statement for execution and returns a statement object */
PHP_METHOD(PDO, prepare)
{
pdo_stmt_t *stmt;
zend_string *statement;
zval *options = NULL, *value, *item, ctor_args;
zend_class_entry *dbstmt_ce, *pce;
pdo_dbh_object_t *dbh_obj = Z_PDO_OBJECT_P(ZEND_THIS);
pdo_dbh_t *dbh = dbh_obj->inner;
ZEND_PARSE_PARAMETERS_START(1, 2)
Z_PARAM_STR(statement)
Z_PARAM_OPTIONAL
Z_PARAM_ARRAY(options)
ZEND_PARSE_PARAMETERS_END();
PDO_CONSTRUCT_CHECK;
if (ZSTR_LEN(statement) == 0) {
zend_argument_must_not_be_empty_error(1);
RETURN_THROWS();
}
PDO_DBH_CLEAR_ERR();
if (options && (value = zend_hash_index_find(Z_ARRVAL_P(options), PDO_ATTR_STATEMENT_CLASS)) != NULL) {
if (Z_TYPE_P(value) != IS_ARRAY) {
zend_type_error("PDO::ATTR_STATEMENT_CLASS value must be of type array, %s given",
zend_zval_value_name(value));
RETURN_THROWS();
}
if ((item = zend_hash_index_find(Z_ARRVAL_P(value), 0)) == NULL) {
zend_value_error("PDO::ATTR_STATEMENT_CLASS value must be an array with the format "
"array(classname, constructor_args)");
RETURN_THROWS();
}
if (Z_TYPE_P(item) != IS_STRING || (pce = zend_lookup_class(Z_STR_P(item))) == NULL) {
zend_type_error("PDO::ATTR_STATEMENT_CLASS class must be a valid class");
RETURN_THROWS();
}
dbstmt_ce = pce;
if (!instanceof_function(dbstmt_ce, pdo_dbstmt_ce)) {
zend_type_error("PDO::ATTR_STATEMENT_CLASS class must be derived from PDOStatement");
RETURN_THROWS();
}
if (dbstmt_ce->constructor && !(dbstmt_ce->constructor->common.fn_flags & (ZEND_ACC_PRIVATE|ZEND_ACC_PROTECTED))) {
zend_type_error("User-supplied statement class cannot have a public constructor");
RETURN_THROWS();
}
if ((item = zend_hash_index_find(Z_ARRVAL_P(value), 1)) != NULL) {
if (Z_TYPE_P(item) != IS_ARRAY) {
zend_type_error("PDO::ATTR_STATEMENT_CLASS constructor_args must be of type ?array, %s given",
zend_zval_value_name(value));
RETURN_THROWS();
}
ZVAL_COPY_VALUE(&ctor_args, item);
} else {
ZVAL_UNDEF(&ctor_args);
}
} else {
dbstmt_ce = dbh->def_stmt_ce;
ZVAL_COPY_VALUE(&ctor_args, &dbh->def_stmt_ctor_args);
}
if (!pdo_stmt_instantiate(dbh, return_value, dbstmt_ce, &ctor_args)) {
RETURN_THROWS();
}
stmt = Z_PDO_STMT_P(return_value);
/* unconditionally keep this for later reference */
stmt->query_string = zend_string_copy(statement);
stmt->default_fetch_type = dbh->default_fetch_type;
stmt->dbh = dbh;
/* give it a reference to me */
ZVAL_OBJ_COPY(&stmt->database_object_handle, &dbh_obj->std);
/* we haven't created a lazy object yet */
ZVAL_UNDEF(&stmt->lazy_object_ref);
if (dbh->methods->preparer(dbh, statement, stmt, options)) {
if (Z_TYPE(ctor_args) == IS_ARRAY) {
pdo_stmt_construct(stmt, return_value, dbstmt_ce, Z_ARRVAL(ctor_args));
} else {
pdo_stmt_construct(stmt, return_value, dbstmt_ce, /* ctor_args */ NULL);
}
return;
}
PDO_HANDLE_DBH_ERR();
/* kill the object handle for the stmt here */
zval_ptr_dtor(return_value);
RETURN_FALSE;
}
/* }}} */
static bool pdo_is_in_transaction(pdo_dbh_t *dbh) {
if (dbh->methods->in_transaction) {
return dbh->methods->in_transaction(dbh);
}
return dbh->in_txn;
}
/* {{{ Initiates a transaction */
PHP_METHOD(PDO, beginTransaction)
{
pdo_dbh_t *dbh = Z_PDO_DBH_P(ZEND_THIS);
ZEND_PARSE_PARAMETERS_NONE();
PDO_CONSTRUCT_CHECK;
if (pdo_is_in_transaction(dbh)) {
zend_throw_exception_ex(php_pdo_get_exception(), 0, "There is already an active transaction");
RETURN_THROWS();
}
if (!dbh->methods->begin) {
/* Throw an exception when the driver does not support transactions */
zend_throw_exception_ex(php_pdo_get_exception(), 0, "This driver doesn't support transactions");
RETURN_THROWS();
}
if (dbh->methods->begin(dbh)) {
dbh->in_txn = true;
RETURN_TRUE;
}
PDO_HANDLE_DBH_ERR();
RETURN_FALSE;
}
/* }}} */
/* {{{ Commit a transaction */
PHP_METHOD(PDO, commit)
{
pdo_dbh_t *dbh = Z_PDO_DBH_P(ZEND_THIS);
ZEND_PARSE_PARAMETERS_NONE();
PDO_CONSTRUCT_CHECK;
if (!pdo_is_in_transaction(dbh)) {
zend_throw_exception_ex(php_pdo_get_exception(), 0, "There is no active transaction");
RETURN_THROWS();
}
if (dbh->methods->commit(dbh)) {
dbh->in_txn = false;
RETURN_TRUE;
}
PDO_HANDLE_DBH_ERR();
RETURN_FALSE;
}
/* }}} */
/* {{{ roll back a transaction */
PHP_METHOD(PDO, rollBack)
{
pdo_dbh_t *dbh = Z_PDO_DBH_P(ZEND_THIS);
ZEND_PARSE_PARAMETERS_NONE();
PDO_CONSTRUCT_CHECK;
if (!pdo_is_in_transaction(dbh)) {
zend_throw_exception_ex(php_pdo_get_exception(), 0, "There is no active transaction");
RETURN_THROWS();
}
if (dbh->methods->rollback(dbh)) {
dbh->in_txn = false;
RETURN_TRUE;
}
PDO_HANDLE_DBH_ERR();
RETURN_FALSE;
}
/* }}} */
/* {{{ determine if inside a transaction */
PHP_METHOD(PDO, inTransaction)
{
pdo_dbh_t *dbh = Z_PDO_DBH_P(ZEND_THIS);
ZEND_PARSE_PARAMETERS_NONE();
PDO_CONSTRUCT_CHECK;
RETURN_BOOL(pdo_is_in_transaction(dbh));
}
/* }}} */
PDO_API bool pdo_get_long_param(zend_long *lval, zval *value)
{
switch (Z_TYPE_P(value)) {
case IS_LONG:
case IS_TRUE:
case IS_FALSE:
*lval = zval_get_long(value);
return true;
case IS_STRING:
if (IS_LONG == is_numeric_str_function(Z_STR_P(value), lval, NULL)) {
return true;
}
ZEND_FALLTHROUGH;
default:
zend_type_error("Attribute value must be of type int for selected attribute, %s given", zend_zval_value_name(value));
return false;
}
}
PDO_API bool pdo_get_bool_param(bool *bval, zval *value)
{
switch (Z_TYPE_P(value)) {
case IS_TRUE:
*bval = true;
return true;
case IS_FALSE:
*bval = false;
return true;
case IS_LONG:
*bval = zval_is_true(value);
return true;
case IS_STRING: /* TODO Should string be allowed? */
default:
zend_type_error("Attribute value must be of type bool for selected attribute, %s given", zend_zval_value_name(value));
return false;
}
}
/* Return false on failure, true otherwise */
static bool pdo_dbh_attribute_set(pdo_dbh_t *dbh, zend_long attr, zval *value) /* {{{ */
{
zend_long lval;
bool bval;
switch (attr) {
case PDO_ATTR_ERRMODE:
if (!pdo_get_long_param(&lval, value)) {
return false;
}
switch (lval) {
case PDO_ERRMODE_SILENT:
case PDO_ERRMODE_WARNING:
case PDO_ERRMODE_EXCEPTION:
dbh->error_mode = lval;
return true;
default:
zend_value_error("Error mode must be one of the PDO::ERRMODE_* constants");
return false;
}
return false;
case PDO_ATTR_CASE:
if (!pdo_get_long_param(&lval, value)) {
return false;
}
switch (lval) {
case PDO_CASE_NATURAL:
case PDO_CASE_UPPER:
case PDO_CASE_LOWER:
dbh->desired_case = lval;
return true;
default:
zend_value_error("Case folding mode must be one of the PDO::CASE_* constants");
return false;
}
return false;
case PDO_ATTR_ORACLE_NULLS:
if (!pdo_get_long_param(&lval, value)) {
return false;
}
/* TODO Check for valid value (NULL_NATURAL, NULL_EMPTY_STRING, NULL_TO_STRING)? */
dbh->oracle_nulls = lval;
return true;
case PDO_ATTR_DEFAULT_FETCH_MODE:
if (Z_TYPE_P(value) == IS_ARRAY) {
zval *tmp;
if ((tmp = zend_hash_index_find(Z_ARRVAL_P(value), 0)) != NULL && Z_TYPE_P(tmp) == IS_LONG) {
if (Z_LVAL_P(tmp) == PDO_FETCH_INTO || Z_LVAL_P(tmp) == PDO_FETCH_CLASS) {
zend_value_error("PDO::FETCH_INTO and PDO::FETCH_CLASS cannot be set as the default fetch mode");
return false;
}
}
lval = zval_get_long(value);
} else {
if (!pdo_get_long_param(&lval, value)) {
return false;
}
}
if (lval == PDO_FETCH_USE_DEFAULT) {
zend_value_error("Fetch mode must be a bitmask of PDO::FETCH_* constants");
return false;
}
dbh->default_fetch_type = lval;
return true;
case PDO_ATTR_STRINGIFY_FETCHES:
if (!pdo_get_bool_param(&bval, value)) {
return false;
}
dbh->stringify = bval;
if (dbh->methods->set_attribute) {
dbh->methods->set_attribute(dbh, attr, value);
}
return true;
case PDO_ATTR_STATEMENT_CLASS: {
/* array(string classname, array(mixed ctor_args)) */
zend_class_entry *pce;
zval *item;
if (dbh->is_persistent) {
/* TODO: ValueError/ PDOException? */
pdo_raise_impl_error(dbh, NULL, "HY000",
"PDO::ATTR_STATEMENT_CLASS cannot be used with persistent PDO instances"
);
PDO_HANDLE_DBH_ERR();
return false;
}
if (Z_TYPE_P(value) != IS_ARRAY) {
zend_type_error("PDO::ATTR_STATEMENT_CLASS value must be of type array, %s given",
zend_zval_value_name(value));
return false;
}
if ((item = zend_hash_index_find(Z_ARRVAL_P(value), 0)) == NULL) {
zend_value_error("PDO::ATTR_STATEMENT_CLASS value must be an array with the format "
"array(classname, constructor_args)");
return false;
}
if (Z_TYPE_P(item) != IS_STRING || (pce = zend_lookup_class(Z_STR_P(item))) == NULL) {
zend_type_error("PDO::ATTR_STATEMENT_CLASS class must be a valid class");
return false;
}
if (!instanceof_function(pce, pdo_dbstmt_ce)) {
zend_type_error("PDO::ATTR_STATEMENT_CLASS class must be derived from PDOStatement");
return false;
}
if (pce->constructor && !(pce->constructor->common.fn_flags & (ZEND_ACC_PRIVATE|ZEND_ACC_PROTECTED))) {
zend_type_error("User-supplied statement class cannot have a public constructor");
return false;
}
dbh->def_stmt_ce = pce;
if (!Z_ISUNDEF(dbh->def_stmt_ctor_args)) {
zval_ptr_dtor(&dbh->def_stmt_ctor_args);
ZVAL_UNDEF(&dbh->def_stmt_ctor_args);
}
if ((item = zend_hash_index_find(Z_ARRVAL_P(value), 1)) != NULL) {
if (Z_TYPE_P(item) != IS_ARRAY) {
zend_type_error("PDO::ATTR_STATEMENT_CLASS constructor_args must be of type ?array, %s given",
zend_zval_value_name(value));
return false;
}
ZVAL_COPY(&dbh->def_stmt_ctor_args, item);
}
return true;
}
/* Don't throw a ValueError as the attribute might be a driver specific one */
default:;
}
if (!dbh->methods->set_attribute) {
goto fail;
}
PDO_DBH_CLEAR_ERR();
if (dbh->methods->set_attribute(dbh, attr, value)) {
return true;
}
fail:
if (!dbh->methods->set_attribute) {
pdo_raise_impl_error(dbh, NULL, "IM001", "driver does not support setting attributes");
} else {
PDO_HANDLE_DBH_ERR();
}
return false;
}
/* }}} */
/* {{{ Set an attribute */
PHP_METHOD(PDO, setAttribute)
{
pdo_dbh_t *dbh = Z_PDO_DBH_P(ZEND_THIS);
zend_long attr;
zval *value;
ZEND_PARSE_PARAMETERS_START(2, 2)
Z_PARAM_LONG(attr)
Z_PARAM_ZVAL(value)
ZEND_PARSE_PARAMETERS_END();
PDO_DBH_CLEAR_ERR();
PDO_CONSTRUCT_CHECK;
RETURN_BOOL(pdo_dbh_attribute_set(dbh, attr, value));
}
/* }}} */
/* {{{ Get an attribute */
PHP_METHOD(PDO, getAttribute)
{
pdo_dbh_t *dbh = Z_PDO_DBH_P(ZEND_THIS);
zend_long attr;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_LONG(attr)
ZEND_PARSE_PARAMETERS_END();
PDO_DBH_CLEAR_ERR();
PDO_CONSTRUCT_CHECK;
/* handle generic PDO-level attributes */
switch (attr) {
case PDO_ATTR_PERSISTENT:
RETURN_BOOL(dbh->is_persistent);
case PDO_ATTR_CASE:
RETURN_LONG(dbh->desired_case);
case PDO_ATTR_ORACLE_NULLS:
RETURN_LONG(dbh->oracle_nulls);
case PDO_ATTR_ERRMODE:
RETURN_LONG(dbh->error_mode);
case PDO_ATTR_DRIVER_NAME:
RETURN_STRINGL((char*)dbh->driver->driver_name, dbh->driver->driver_name_len);
case PDO_ATTR_STATEMENT_CLASS:
array_init(return_value);
add_next_index_str(return_value, zend_string_copy(dbh->def_stmt_ce->name));
if (!Z_ISUNDEF(dbh->def_stmt_ctor_args)) {
Z_TRY_ADDREF(dbh->def_stmt_ctor_args);
add_next_index_zval(return_value, &dbh->def_stmt_ctor_args);
}
return;
case PDO_ATTR_DEFAULT_FETCH_MODE:
RETURN_LONG(dbh->default_fetch_type);
case PDO_ATTR_STRINGIFY_FETCHES:
RETURN_BOOL(dbh->stringify);
default:
break;
}
if (!dbh->methods->get_attribute) {
pdo_raise_impl_error(dbh, NULL, "IM001", "driver does not support getting attributes");