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664ebfa499
php-src/ext/pdo/pdo.c
Wez Furlong 664ebfa499 expand oracle null handling compatability by offering the ability to convert 
NULLs into empty strings as well as the other way around.  It still doesn't
help a great deal in the long run, but at least the option is there.

Make sure hash tables are nulled out to avoid double freeing them.
2005-07-12 02:40:59 +00:00

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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2005 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.0 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: |
| http://www.php.net/license/3_0.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> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#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"
#if defined(HAVE_SPL) && ((PHP_MAJOR_VERSION > 5) || (PHP_MAJOR_VERSION == 5 && PHP_MINOR_VERSION >= 1))
extern PHPAPI zend_class_entry *spl_ce_RuntimeException;
#endif
ZEND_DECLARE_MODULE_GLOBALS(pdo)
/* True global resources - no need for thread safety here */
/* the registry of PDO drivers */
static HashTable pdo_driver_hash;
/* we use persistent resources for the driver connection stuff */
static int le_ppdo;
int php_pdo_list_entry(void)
{
return le_ppdo;
}
/* for exceptional circumstances */
zend_class_entry *pdo_exception_ce;
PDO_API zend_class_entry *php_pdo_get_exception(void)
{
return pdo_exception_ce;
}
zend_class_entry *pdo_dbh_ce, *pdo_dbstmt_ce, *pdo_row_ce;
/* proto array pdo_drivers()
Return array of available PDO drivers */
PHP_FUNCTION(pdo_drivers)
{
HashPosition pos;
pdo_driver_t **pdriver;
array_init(return_value);
zend_hash_internal_pointer_reset_ex(&pdo_driver_hash, &pos);
while (SUCCESS == zend_hash_get_current_data_ex(&pdo_driver_hash, (void**)&pdriver, &pos)) {
add_next_index_stringl(return_value, (char*)(*pdriver)->driver_name, (*pdriver)->driver_name_len, 1);
zend_hash_move_forward_ex(&pdo_driver_hash, &pos);
}
}
/* }}} */
/* {{{ pdo_functions[] */
function_entry pdo_functions[] = {
PHP_FE(pdo_drivers, NULL)
{NULL, NULL, NULL}
};
/* }}} */
/* {{{ pdo_functions[] */
#if ZEND_EXTENSION_API_NO >= 220050617
static zend_module_dep pdo_deps[] = {
#ifdef HAVE_SPL
ZEND_MOD_REQUIRED("spl")
#endif
{NULL, NULL, NULL}
};
#endif
/* }}} */
/* {{{ pdo_module_entry */
zend_module_entry pdo_module_entry = {
#if ZEND_EXTENSION_API_NO >= 220050617
STANDARD_MODULE_HEADER_EX, NULL,
pdo_deps,
#else
STANDARD_MODULE_HEADER,
#endif
"PDO",
pdo_functions,
PHP_MINIT(pdo),
PHP_MSHUTDOWN(pdo),
PHP_RINIT(pdo),
PHP_RSHUTDOWN(pdo),
PHP_MINFO(pdo),
"0.3",
STANDARD_MODULE_PROPERTIES
};
/* }}} */
#ifdef COMPILE_DL_PDO
ZEND_GET_MODULE(pdo)
#endif
/* {{{ PHP_INI */
PHP_INI_BEGIN()
STD_PHP_INI_ENTRY("pdo.global_value", "42", PHP_INI_ALL, OnUpdateLong, global_value, zend_pdo_globals, pdo_globals)
PHP_INI_END()
/* }}} */
/* {{{ php_pdo_init_globals */
static void php_pdo_init_globals(zend_pdo_globals *pdo_globals)
{
pdo_globals->global_value = 0;
}
/* }}} */
PDO_API int php_pdo_register_driver(pdo_driver_t *driver)
{
if (driver->api_version != PDO_DRIVER_API) {
zend_error(E_ERROR, "PDO: driver %s requires PDO API version %ld; this is PDO version %d",
driver->driver_name, driver->api_version, PDO_DRIVER_API);
return FAILURE;
}
if (!zend_hash_exists(&module_registry, "pdo", sizeof("pdo"))) {
zend_error(E_ERROR, "You MUST load PDO before loading any PDO drivers");
return FAILURE; /* NOTREACHED */
}
return zend_hash_add(&pdo_driver_hash, (char*)driver->driver_name, driver->driver_name_len,
(void**)&driver, sizeof(driver), NULL);
}
PDO_API void php_pdo_unregister_driver(pdo_driver_t *driver)
{
if (!zend_hash_exists(&module_registry, "pdo", sizeof("pdo"))) {
return;
}
zend_hash_del(&pdo_driver_hash, (char*)driver->driver_name, driver->driver_name_len);
}
pdo_driver_t *pdo_find_driver(const char *name, int namelen)
{
pdo_driver_t **driver = NULL;
zend_hash_find(&pdo_driver_hash, (char*)name, namelen, (void**)&driver);
return driver ? *driver : NULL;
}
PDO_API int php_pdo_parse_data_source(const char *data_source,
unsigned long data_source_len, struct pdo_data_src_parser *parsed,
int nparams)
{
int i, j;
int valstart = -1;
int semi = -1;
int optstart = 0;
int nlen;
int n_matches = 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;
while (i < data_source_len) {
if (data_source[i] == '\0') {
semi = i++;
break;
}
if (data_source[i] == ';') {
semi = i++;
break;
}
++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);
}
parsed[j].optval = estrndup(data_source + valstart, semi - valstart);
parsed[j].freeme = 1;
++n_matches;
break;
}
}
while (i < data_source_len && isspace(data_source[i])) {
i++;
}
optstart = i;
}
return n_matches;
}
static const char digit_vec[] = "0123456789";
PDO_API char *php_pdo_int64_to_str(pdo_int64_t i64 TSRMLS_DC)
{
char buffer[65];
char outbuf[65] = "";
register char *p;
long long_val;
char *dst = outbuf;
if (i64 < 0) {
i64 = -i64;
*dst++ = '-';
}
if (i64 == 0) {
*dst++ = '0';
*dst++ = '\0';
return estrdup(outbuf);
}
p = &buffer[sizeof(buffer)-1];
*p = '\0';
while ((pdo_uint64_t)i64 > (pdo_uint64_t)LONG_MAX) {
pdo_uint64_t quo = (pdo_uint64_t)i64 / (unsigned int)10;
unsigned int rem = (unsigned int)(i64 - quo*10U);
*--p = digit_vec[rem];
i64 = (pdo_int64_t)quo;
}
long_val = (long)i64;
while (long_val != 0) {
long quo = long_val / 10;
*--p = digit_vec[(unsigned int)(long_val - quo * 10)];
long_val = quo;
}
while ((*dst++ = *p++) != 0)
;
*dst = '\0';
return estrdup(outbuf);
}
/* {{{ PHP_MINIT_FUNCTION */
PHP_MINIT_FUNCTION(pdo)
{
zend_class_entry ce;
ZEND_INIT_MODULE_GLOBALS(pdo, php_pdo_init_globals, NULL);
REGISTER_INI_ENTRIES();
if (FAILURE == pdo_sqlstate_init_error_table()) {
return FAILURE;
}
zend_hash_init(&pdo_driver_hash, 0, NULL, NULL, 1);
le_ppdo = zend_register_list_destructors_ex(NULL, php_pdo_pdbh_dtor,
"PDO persistent database", module_number);
REGISTER_LONG_CONSTANT("PDO_PARAM_NULL", (long)PDO_PARAM_NULL, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_PARAM_INT", (long)PDO_PARAM_INT, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_PARAM_STR", (long)PDO_PARAM_STR, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_PARAM_LOB", (long)PDO_PARAM_LOB, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_PARAM_STMT", (long)PDO_PARAM_STMT, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_PARAM_INPUT_OUTPUT", (long)PDO_PARAM_INPUT_OUTPUT, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_LAZY", (long)PDO_FETCH_LAZY, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_ASSOC",(long)PDO_FETCH_ASSOC, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_NUM", (long)PDO_FETCH_NUM, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_BOTH", (long)PDO_FETCH_BOTH, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_OBJ", (long)PDO_FETCH_OBJ, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_BOUND",(long)PDO_FETCH_BOUND, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_COLUMN",(long)PDO_FETCH_COLUMN, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_CLASS",(long)PDO_FETCH_CLASS, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_INTO", (long)PDO_FETCH_INTO, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_FUNC", (long)PDO_FETCH_FUNC, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_GROUP",(long)PDO_FETCH_GROUP, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_UNIQUE",(long)PDO_FETCH_UNIQUE, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_CLASSTYPE",(long)PDO_FETCH_CLASSTYPE, CONST_CS|CONST_PERSISTENT);
#if PHP_MAJOR_VERSION > 5 || PHP_MINOR_VERSION >= 1
REGISTER_LONG_CONSTANT("PDO_FETCH_SERIALIZE",(long)PDO_FETCH_SERIALIZE, CONST_CS|CONST_PERSISTENT);
#endif
REGISTER_LONG_CONSTANT("PDO_FETCH_NAMED",(long)PDO_FETCH_NAMED, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_AUTOCOMMIT", (long)PDO_ATTR_AUTOCOMMIT, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_PREFETCH", (long)PDO_ATTR_PREFETCH, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_TIMEOUT", (long)PDO_ATTR_TIMEOUT, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_ERRMODE", (long)PDO_ATTR_ERRMODE, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_SERVER_VERSION", (long)PDO_ATTR_SERVER_VERSION, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_CLIENT_VERSION", (long)PDO_ATTR_CLIENT_VERSION, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_SERVER_INFO", (long)PDO_ATTR_SERVER_INFO, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_CONNECTION_STATUS", (long)PDO_ATTR_CONNECTION_STATUS, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_CASE", (long)PDO_ATTR_CASE, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_CURSOR_NAME", (long)PDO_ATTR_CURSOR_NAME, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_CURSOR", (long)PDO_ATTR_CURSOR, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_ORACLE_NULLS", (long)PDO_ATTR_ORACLE_NULLS, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_PERSISTENT", (long)PDO_ATTR_PERSISTENT, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_STATEMENT_CLASS", (long)PDO_ATTR_STATEMENT_CLASS, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_FETCH_TABLE_NAMES", (long)PDO_ATTR_FETCH_TABLE_NAMES, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_FETCH_CATALOG_NAMES", (long)PDO_ATTR_FETCH_CATALOG_NAMES, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_DRIVER_NAME", (long)PDO_ATTR_DRIVER_NAME, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ATTR_STRINGIFY_FETCHES",(long)PDO_ATTR_STRINGIFY_FETCHES, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ERRMODE_SILENT", (long)PDO_ERRMODE_SILENT, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ERRMODE_WARNING", (long)PDO_ERRMODE_WARNING, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ERRMODE_EXCEPTION", (long)PDO_ERRMODE_EXCEPTION, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_CASE_NATURAL", (long)PDO_CASE_NATURAL, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_CASE_LOWER", (long)PDO_CASE_LOWER, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_CASE_UPPER", (long)PDO_CASE_UPPER, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_NULL_NATURAL", (long)PDO_NULL_NATURAL, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_NULL_EMPTY_STRING", (long)PDO_NULL_EMPTY_STRING, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_NULL_TO_STRING", (long)PDO_NULL_TO_STRING, CONST_CS|CONST_PERSISTENT);
REGISTER_STRING_CONSTANT("PDO_ERR_NONE", PDO_ERR_NONE, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_ORI_NEXT", (long)PDO_FETCH_ORI_NEXT, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_ORI_PRIOR", (long)PDO_FETCH_ORI_PRIOR, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_ORI_FIRST", (long)PDO_FETCH_ORI_FIRST, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_ORI_LAST", (long)PDO_FETCH_ORI_LAST, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_ORI_ABS", (long)PDO_FETCH_ORI_ABS, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_FETCH_ORI_REL", (long)PDO_FETCH_ORI_REL, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_CURSOR_FWDONLY", (long)PDO_CURSOR_FWDONLY,CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_CURSOR_SCROLL", (long)PDO_CURSOR_SCROLL,CONST_CS|CONST_PERSISTENT);
#if 0
REGISTER_LONG_CONSTANT("PDO_ERR_CANT_MAP", (long)PDO_ERR_CANT_MAP, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ERR_SYNTAX", (long)PDO_ERR_SYNTAX, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ERR_CONSTRAINT", (long)PDO_ERR_CONSTRAINT, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ERR_NOT_FOUND", (long)PDO_ERR_NOT_FOUND, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ERR_ALREADY_EXISTS", (long)PDO_ERR_ALREADY_EXISTS, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ERR_NOT_IMPLEMENTED", (long)PDO_ERR_NOT_IMPLEMENTED, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ERR_MISMATCH", (long)PDO_ERR_MISMATCH, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ERR_TRUNCATED", (long)PDO_ERR_TRUNCATED, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ERR_DISCONNECTED", (long)PDO_ERR_DISCONNECTED, CONST_CS|CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PDO_ERR_NO_PERM", (long)PDO_ERR_NO_PERM, CONST_CS|CONST_PERSISTENT);
#endif
INIT_CLASS_ENTRY(ce, "PDOException", NULL);
#if can_handle_soft_dependency_on_SPL && defined(HAVE_SPL) && ((PHP_MAJOR_VERSION > 5) || (PHP_MAJOR_VERSION == 5 && PHP_MINOR_VERSION >= 1))
pdo_exception_ce = zend_register_internal_class_ex(&ce, spl_ce_RuntimeException, NULL TSRMLS_CC);
#else
pdo_exception_ce = zend_register_internal_class_ex(&ce, zend_exception_get_default(), NULL TSRMLS_CC);
#endif
zend_declare_property_null(pdo_exception_ce, "errorInfo", sizeof("errorInfo")-1, ZEND_ACC_PUBLIC TSRMLS_CC);
pdo_dbh_init(TSRMLS_C);
pdo_stmt_init(TSRMLS_C);
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MSHUTDOWN_FUNCTION */
PHP_MSHUTDOWN_FUNCTION(pdo)
{
UNREGISTER_INI_ENTRIES();
zend_hash_destroy(&pdo_driver_hash);
pdo_sqlstate_fini_error_table();
return SUCCESS;
}
/* }}} */
/* {{{ PHP_RINIT_FUNCTION */
PHP_RINIT_FUNCTION(pdo)
{
return SUCCESS;
}
/* }}} */
/* {{{ PHP_RSHUTDOWN_FUNCTION */
PHP_RSHUTDOWN_FUNCTION(pdo)
{
/* TODO: visit persistent handles: for each persistent statement handle,
* remove bound parameter associations */
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MINFO_FUNCTION */
PHP_MINFO_FUNCTION(pdo)
{
HashPosition pos;
char *drivers = NULL, *ldrivers = estrdup("");
pdo_driver_t **pdriver;
php_info_print_table_start();
php_info_print_table_header(2, "PDO support", "enabled");
zend_hash_internal_pointer_reset_ex(&pdo_driver_hash, &pos);
while (SUCCESS == zend_hash_get_current_data_ex(&pdo_driver_hash, (void**)&pdriver, &pos)) {
spprintf(&drivers, 0, "%s, %s", ldrivers, (*pdriver)->driver_name);
zend_hash_move_forward_ex(&pdo_driver_hash, &pos);
efree(ldrivers);
ldrivers = drivers;
}
php_info_print_table_row(2, "PDO drivers", drivers ? drivers+2 : "");
if (drivers) {
efree(drivers);
}
php_info_print_table_end();
#if 0
DISPLAY_INI_ENTRIES();
#endif
}
/* }}} */
/*
* 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
*/
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