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dis-bench / src /php /php-src /ext /pdo /pdo.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 |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Wez Furlong <wez@php.net> |
| Marcus Boerger <helly@php.net> |
| Sterling Hughes <sterling@php.net> |
+----------------------------------------------------------------------+
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <ctype.h>
#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_exceptions.h"
#include "ext/spl/spl_exceptions.h"
#include "pdo_arginfo.h"
zend_class_entry *pdo_dbh_ce, *pdo_dbstmt_ce, *pdo_row_ce;
/* for exceptional circumstances */
zend_class_entry *pdo_exception_ce;
/* True global resources - no need for thread safety here */
/* the registry of PDO drivers */
HashTable pdo_driver_hash;
/* the registry of PDO driver specific class entries */
HashTable pdo_driver_specific_ce_hash;
/* we use persistent resources for the driver connection stuff */
static int le_ppdo;
int php_pdo_list_entry(void) /* {{{ */
{
return le_ppdo;
}
/* }}} */
PDO_API zend_class_entry *php_pdo_get_dbh_ce(void) /* {{{ */
{
return pdo_dbh_ce;
}
/* }}} */
PDO_API zend_class_entry *php_pdo_get_exception(void) /* {{{ */
{
return pdo_exception_ce;
}
/* }}} */
/* {{{ Return array of available PDO drivers */
PHP_FUNCTION(pdo_drivers)
{
pdo_driver_t *pdriver;
ZEND_PARSE_PARAMETERS_NONE();
array_init(return_value);
ZEND_HASH_MAP_FOREACH_PTR(&pdo_driver_hash, pdriver) {
add_next_index_stringl(return_value, pdriver->driver_name, pdriver->driver_name_len);
} ZEND_HASH_FOREACH_END();
}
/* }}} */
/* {{{ pdo_functions[] */
static const zend_module_dep pdo_deps[] = {
ZEND_MOD_REQUIRED("spl")
ZEND_MOD_END
};
/* }}} */
/* {{{ pdo_module_entry */
zend_module_entry pdo_module_entry = {
STANDARD_MODULE_HEADER_EX, NULL,
pdo_deps,
"PDO",
ext_functions,
PHP_MINIT(pdo),
PHP_MSHUTDOWN(pdo),
NULL,
NULL,
PHP_MINFO(pdo),
PHP_PDO_VERSION,
STANDARD_MODULE_PROPERTIES
};
/* }}} */
/* TODO: visit persistent handles: for each persistent statement handle,
* remove bound parameter associations */
#ifdef COMPILE_DL_PDO
ZEND_GET_MODULE(pdo)
#endif
PDO_API zend_result php_pdo_register_driver(const pdo_driver_t *driver) /* {{{ */
{
if (driver->api_version != PDO_DRIVER_API) {
zend_error_noreturn(E_ERROR, "PDO: driver %s requires PDO API version " ZEND_ULONG_FMT "; this is PDO version %d",
driver->driver_name, driver->api_version, PDO_DRIVER_API);
return FAILURE;
}
if (!zend_hash_str_exists(&module_registry, "pdo", sizeof("pdo") - 1)) {
zend_error_noreturn(E_ERROR, "The PDO extension must be loaded first in order to load PDO drivers");
return FAILURE; /* NOTREACHED */
}
return zend_hash_str_add_ptr(&pdo_driver_hash, driver->driver_name, driver->driver_name_len, (void*)driver) != NULL ? SUCCESS : FAILURE;
}
/* }}} */
PDO_API void php_pdo_unregister_driver(const pdo_driver_t *driver) /* {{{ */
{
if (!zend_hash_str_exists(&module_registry, "pdo", sizeof("pdo") - 1)) {
return;
}
zend_hash_str_del(&pdo_driver_specific_ce_hash, driver->driver_name, driver->driver_name_len);
zend_hash_str_del(&pdo_driver_hash, driver->driver_name, driver->driver_name_len);
}
/* }}} */
PDO_API zend_result php_pdo_register_driver_specific_ce(const pdo_driver_t *driver, zend_class_entry *ce) /* {{{ */
{
if (!zend_hash_str_exists(&module_registry, "pdo", sizeof("pdo") - 1)) {
zend_error_noreturn(E_ERROR, "The PDO extension must be loaded first in order to load PDO drivers");
return FAILURE; /* NOTREACHED */
}
return zend_hash_str_add_ptr(&pdo_driver_specific_ce_hash, driver->driver_name,
driver->driver_name_len, (void*)ce) != NULL ? SUCCESS : FAILURE;
}
pdo_driver_t *pdo_find_driver(const char *name, int namelen) /* {{{ */
{
return zend_hash_str_find_ptr(&pdo_driver_hash, name, namelen);
}
/* }}} */
PDO_API int php_pdo_parse_data_source(const char *data_source, zend_ulong data_source_len, struct pdo_data_src_parser *parsed, int nparams) /* {{{ */
{
zend_ulong i;
int j;
int valstart = -1;
int semi = -1;
int optstart = 0;
int nlen;
int n_matches = 0;
int n_semicolumns = 0;
i = 0;
while (i < data_source_len) {
/* looking for NAME= */
if (data_source[i] == '\0') {
break;
}
if (data_source[i] != '=') {
++i;
continue;
}
valstart = ++i;
/* now we're looking for VALUE; or just VALUE<NUL> */
semi = -1;
n_semicolumns = 0;
while (i < data_source_len) {
if (data_source[i] == '\0') {
semi = i++;
break;
}
if (data_source[i] == ';') {
if ((i + 1 >= data_source_len) || data_source[i+1] != ';') {
semi = i++;
break;
} else {
n_semicolumns++;
i += 2;
continue;
}
}
++i;
}
if (semi == -1) {
semi = i;
}
/* find the entry in the array */
nlen = valstart - optstart - 1;
for (j = 0; j < nparams; j++) {
if (0 == strncmp(data_source + optstart, parsed[j].optname, nlen) && parsed[j].optname[nlen] == '\0') {
/* got a match */
if (parsed[j].freeme) {
efree(parsed[j].optval);
}
if (n_semicolumns == 0) {
parsed[j].optval = estrndup(data_source + valstart, semi - valstart - n_semicolumns);
} else {
int vlen = semi - valstart;
const char *orig_val = data_source + valstart;
char *new_val = (char *) emalloc(vlen - n_semicolumns + 1);
parsed[j].optval = new_val;
while (vlen && *orig_val) {
*new_val = *orig_val;
new_val++;
if (*orig_val == ';') {
orig_val+=2;
vlen-=2;
} else {
orig_val++;
vlen--;
}
}
*new_val = '\0';
}
parsed[j].freeme = 1;
++n_matches;
break;
}
}
while (i < data_source_len && isspace(data_source[i])) {
i++;
}
optstart = i;
}
return n_matches;
}
/* }}} */
/* {{{ PHP_MINIT_FUNCTION */
PHP_MINIT_FUNCTION(pdo)
{
pdo_sqlstate_init_error_table();
zend_hash_init(&pdo_driver_hash, 0, NULL, NULL, 1);
zend_hash_init(&pdo_driver_specific_ce_hash, 0, NULL, NULL, 1);
le_ppdo = zend_register_list_destructors_ex(NULL, php_pdo_pdbh_dtor,
"PDO persistent database", module_number);
pdo_exception_ce = register_class_PDOException(spl_ce_RuntimeException);
pdo_dbh_init(module_number);
pdo_stmt_init();
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MSHUTDOWN_FUNCTION */
PHP_MSHUTDOWN_FUNCTION(pdo)
{
zend_hash_destroy(&pdo_driver_hash);
zend_hash_destroy(&pdo_driver_specific_ce_hash);
pdo_sqlstate_fini_error_table();
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MINFO_FUNCTION */
PHP_MINFO_FUNCTION(pdo)
{
char *drivers = NULL, *ldrivers = estrdup("");
pdo_driver_t *pdriver;
php_info_print_table_start();
php_info_print_table_row(2, "PDO support", "enabled");
ZEND_HASH_MAP_FOREACH_PTR(&pdo_driver_hash, pdriver) {
spprintf(&drivers, 0, "%s, %s", ldrivers, pdriver->driver_name);
efree(ldrivers);
ldrivers = drivers;
} ZEND_HASH_FOREACH_END();
php_info_print_table_row(2, "PDO drivers", drivers ? drivers + 2 : "");
if (drivers) {
efree(drivers);
} else {
efree(ldrivers);
}
php_info_print_table_end();
}
/* }}} */