root/interbase/interbase.c

/* [<][>][^][v][top][bottom][index][help] */

DEFINITIONS

This source file includes following definitions.
  1. ZEND_GET_MODULE
  2. PHP_FUNCTION
  3. _php_ibase_error
  4. _php_ibase_module_error
  5. _php_ibase_get_link_trans
  6. _php_ibase_commit_link
  7. php_ibase_commit_link_rsrc
  8. _php_ibase_close_link
  9. _php_ibase_close_plink
  10. _php_ibase_free_trans
  11. PHP_INI_DISP
  12. PHP_INI_BEGIN
  13. PHP_MINIT_FUNCTION
  14. PHP_MSHUTDOWN_FUNCTION
  15. PHP_RSHUTDOWN_FUNCTION
  16. PHP_MINFO_FUNCTION
  17. _php_ibase_attach_db
  18. _php_ibase_connect
  19. PHP_FUNCTION
  20. PHP_FUNCTION
  21. PHP_FUNCTION
  22. PHP_FUNCTION
  23. PHP_FUNCTION
  24. _php_ibase_def_trans
  25. _php_ibase_trans_end
  26. PHP_FUNCTION
  27. PHP_FUNCTION
  28. PHP_FUNCTION
  29. PHP_FUNCTION
  30. PHP_FUNCTION

/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2013 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:           |
   | http://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.               |
   +----------------------------------------------------------------------+
   | Authors: Jouni Ahto <jouni.ahto@exdec.fi>                            |
   |          Andrew Avdeev <andy@rsc.mv.ru>                              |
   |          Ard Biesheuvel <a.k.biesheuvel@ewi.tudelft.nl>              |
   +----------------------------------------------------------------------+
 */

/* $Id$ */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#define _GNU_SOURCE

#include "php.h"

#if HAVE_IBASE

#include "php_ini.h"
#include "ext/standard/php_standard.h"
#include "ext/standard/md5.h"
#include "php_interbase.h"
#include "php_ibase_includes.h"
#include "SAPI.h"

#include <time.h>

#define ROLLBACK                0
#define COMMIT                  1
#define RETAIN                  2

#define CHECK_LINK(link) { if (link==-1) { php_error_docref(NULL TSRMLS_CC, E_WARNING, "A link to the server could not be established"); RETURN_FALSE; } }

ZEND_DECLARE_MODULE_GLOBALS(ibase)
static PHP_GINIT_FUNCTION(ibase);

/* {{{ arginfo */
ZEND_BEGIN_ARG_INFO(arginfo_ibase_errmsg, 0)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO(arginfo_ibase_errcode, 0)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_connect, 0, 0, 1)
        ZEND_ARG_INFO(0, database)
        ZEND_ARG_INFO(0, username)
        ZEND_ARG_INFO(0, password)
        ZEND_ARG_INFO(0, charset)
        ZEND_ARG_INFO(0, buffers)
        ZEND_ARG_INFO(0, dialect)
        ZEND_ARG_INFO(0, role)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_pconnect, 0, 0, 1)
        ZEND_ARG_INFO(0, database)
        ZEND_ARG_INFO(0, username)
        ZEND_ARG_INFO(0, password)
        ZEND_ARG_INFO(0, charset)
        ZEND_ARG_INFO(0, buffers)
        ZEND_ARG_INFO(0, dialect)
        ZEND_ARG_INFO(0, role)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_close, 0, 0, 0)
        ZEND_ARG_INFO(0, link_identifier)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_drop_db, 0, 0, 0)
        ZEND_ARG_INFO(0, link_identifier)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_trans, 0, 0, 0)
        ZEND_ARG_INFO(0, trans_args)
        ZEND_ARG_INFO(0, link_identifier)
        ZEND_ARG_INFO(0, trans_args)
        ZEND_ARG_INFO(0, link_identifier)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_commit, 0, 0, 1)
        ZEND_ARG_INFO(0, link_identifier)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_rollback, 0, 0, 1)
        ZEND_ARG_INFO(0, link_identifier)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_commit_ret, 0, 0, 1)
        ZEND_ARG_INFO(0, link_identifier)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_rollback_ret, 0, 0, 1)
        ZEND_ARG_INFO(0, link_identifier)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_gen_id, 0, 0, 1)
        ZEND_ARG_INFO(0, generator)
        ZEND_ARG_INFO(0, increment)
        ZEND_ARG_INFO(0, link_identifier)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_blob_create, 0, 0, 0)
        ZEND_ARG_INFO(0, link_identifier)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_blob_open, 0, 0, 0)
        ZEND_ARG_INFO(0, link_identifier)
        ZEND_ARG_INFO(0, blob_id)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_blob_add, 0, 0, 2)
        ZEND_ARG_INFO(0, blob_handle)
        ZEND_ARG_INFO(0, data)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_blob_get, 0, 0, 2)
        ZEND_ARG_INFO(0, blob_handle)
        ZEND_ARG_INFO(0, len)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_blob_close, 0, 0, 1)
        ZEND_ARG_INFO(0, blob_handle)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_blob_cancel, 0, 0, 1)
        ZEND_ARG_INFO(0, blob_handle)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_blob_info, 0, 0, 0)
        ZEND_ARG_INFO(0, link_identifier)
        ZEND_ARG_INFO(0, blob_id)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_blob_echo, 0, 0, 0)
        ZEND_ARG_INFO(0, link_identifier)
        ZEND_ARG_INFO(0, blob_id)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_blob_import, 0, 0, 0)
        ZEND_ARG_INFO(0, link_identifier)
        ZEND_ARG_INFO(0, file)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_query, 0, 0, 0)
        ZEND_ARG_INFO(0, link_identifier)
        ZEND_ARG_INFO(0, link_identifier)
        ZEND_ARG_INFO(0, query)
        ZEND_ARG_INFO(0, bind_arg)
        ZEND_ARG_INFO(0, bind_arg)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_affected_rows, 0, 0, 0)
        ZEND_ARG_INFO(0, link_identifier)
ZEND_END_ARG_INFO()

#if abies_0
ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_num_rows, 0, 0, 1)
        ZEND_ARG_INFO(0, result_identifier)
ZEND_END_ARG_INFO()
#endif

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_fetch_row, 0, 0, 1)
        ZEND_ARG_INFO(0, result)
        ZEND_ARG_INFO(0, fetch_flags)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_fetch_assoc, 0, 0, 1)
        ZEND_ARG_INFO(0, result)
        ZEND_ARG_INFO(0, fetch_flags)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_fetch_object, 0, 0, 1)
        ZEND_ARG_INFO(0, result)
        ZEND_ARG_INFO(0, fetch_flags)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_name_result, 0, 0, 2)
        ZEND_ARG_INFO(0, result)
        ZEND_ARG_INFO(0, name)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_free_result, 0, 0, 1)
        ZEND_ARG_INFO(0, result)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_prepare, 0, 0, 0)
        ZEND_ARG_INFO(0, link_identifier)
        ZEND_ARG_INFO(0, query)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_execute, 0, 0, 1)
        ZEND_ARG_INFO(0, query)
        ZEND_ARG_INFO(0, bind_arg)
        ZEND_ARG_INFO(0, bind_arg)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_free_query, 0, 0, 1)
        ZEND_ARG_INFO(0, query)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_num_fields, 0, 0, 1)
        ZEND_ARG_INFO(0, query_result)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_field_info, 0, 0, 2)
        ZEND_ARG_INFO(0, query_result)
        ZEND_ARG_INFO(0, field_number)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_num_params, 0, 0, 1)
        ZEND_ARG_INFO(0, query)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_param_info, 0, 0, 2)
        ZEND_ARG_INFO(0, query)
        ZEND_ARG_INFO(0, field_number)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_add_user, 0, 0, 3)
        ZEND_ARG_INFO(0, service_handle)
        ZEND_ARG_INFO(0, user_name)
        ZEND_ARG_INFO(0, password)
        ZEND_ARG_INFO(0, first_name)
        ZEND_ARG_INFO(0, middle_name)
        ZEND_ARG_INFO(0, last_name)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_modify_user, 0, 0, 3)
        ZEND_ARG_INFO(0, service_handle)
        ZEND_ARG_INFO(0, user_name)
        ZEND_ARG_INFO(0, password)
        ZEND_ARG_INFO(0, first_name)
        ZEND_ARG_INFO(0, middle_name)
        ZEND_ARG_INFO(0, last_name)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_delete_user, 0, 0, 3)
        ZEND_ARG_INFO(0, service_handle)
        ZEND_ARG_INFO(0, user_name)
        ZEND_ARG_INFO(0, password)
        ZEND_ARG_INFO(0, first_name)
        ZEND_ARG_INFO(0, middle_name)
        ZEND_ARG_INFO(0, last_name)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_service_attach, 0, 0, 3)
        ZEND_ARG_INFO(0, host)
        ZEND_ARG_INFO(0, dba_username)
        ZEND_ARG_INFO(0, dba_password)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_service_detach, 0, 0, 1)
        ZEND_ARG_INFO(0, service_handle)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_backup, 0, 0, 3)
        ZEND_ARG_INFO(0, service_handle)
        ZEND_ARG_INFO(0, source_db)
        ZEND_ARG_INFO(0, dest_file)
        ZEND_ARG_INFO(0, options)
        ZEND_ARG_INFO(0, verbose)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_restore, 0, 0, 3)
        ZEND_ARG_INFO(0, service_handle)
        ZEND_ARG_INFO(0, source_file)
        ZEND_ARG_INFO(0, dest_db)
        ZEND_ARG_INFO(0, options)
        ZEND_ARG_INFO(0, verbose)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_maintain_db, 0, 0, 3)
        ZEND_ARG_INFO(0, service_handle)
        ZEND_ARG_INFO(0, db)
        ZEND_ARG_INFO(0, action)
        ZEND_ARG_INFO(0, argument)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_db_info, 0, 0, 3)
        ZEND_ARG_INFO(0, service_handle)
        ZEND_ARG_INFO(0, db)
        ZEND_ARG_INFO(0, action)
        ZEND_ARG_INFO(0, argument)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_server_info, 0, 0, 2)
        ZEND_ARG_INFO(0, service_handle)
        ZEND_ARG_INFO(0, action)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_wait_event, 0, 0, 1)
        ZEND_ARG_INFO(0, link_identifier)
        ZEND_ARG_INFO(0, event)
        ZEND_ARG_INFO(0, event2)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_set_event_handler, 0, 0, 2)
        ZEND_ARG_INFO(0, link_identifier)
        ZEND_ARG_INFO(0, handler)
        ZEND_ARG_INFO(0, event)
        ZEND_ARG_INFO(0, event2)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_free_event_handler, 0, 0, 1)
        ZEND_ARG_INFO(0, event)
ZEND_END_ARG_INFO()
/* }}} */

/* {{{ extension definition structures */
const zend_function_entry ibase_functions[] = {
        PHP_FE(ibase_connect,           arginfo_ibase_connect)
        PHP_FE(ibase_pconnect,          arginfo_ibase_pconnect)
        PHP_FE(ibase_close,             arginfo_ibase_close)
        PHP_FE(ibase_drop_db,           arginfo_ibase_drop_db)
        PHP_FE(ibase_query,             arginfo_ibase_query)
        PHP_FE(ibase_fetch_row,         arginfo_ibase_fetch_row)
        PHP_FE(ibase_fetch_assoc,       arginfo_ibase_fetch_assoc)
        PHP_FE(ibase_fetch_object,      arginfo_ibase_fetch_object)
        PHP_FE(ibase_free_result,       arginfo_ibase_free_result)
        PHP_FE(ibase_name_result,       arginfo_ibase_name_result)
        PHP_FE(ibase_prepare,           arginfo_ibase_prepare)
        PHP_FE(ibase_execute,           arginfo_ibase_execute)
        PHP_FE(ibase_free_query,        arginfo_ibase_free_query)
        PHP_FE(ibase_gen_id,            arginfo_ibase_gen_id)
        PHP_FE(ibase_num_fields,        arginfo_ibase_num_fields)
        PHP_FE(ibase_num_params,        arginfo_ibase_num_params)
#if abies_0
        PHP_FE(ibase_num_rows,          arginfo_ibase_num_rows)
#endif
        PHP_FE(ibase_affected_rows, arginfo_ibase_affected_rows)
        PHP_FE(ibase_field_info,        arginfo_ibase_field_info)
        PHP_FE(ibase_param_info,        arginfo_ibase_param_info)

        PHP_FE(ibase_trans,             arginfo_ibase_trans)
        PHP_FE(ibase_commit,            arginfo_ibase_commit)
        PHP_FE(ibase_rollback,          arginfo_ibase_rollback)
        PHP_FE(ibase_commit_ret,        arginfo_ibase_commit_ret)
        PHP_FE(ibase_rollback_ret,      arginfo_ibase_rollback_ret)

        PHP_FE(ibase_blob_info,         arginfo_ibase_blob_info)
        PHP_FE(ibase_blob_create,       arginfo_ibase_blob_create)
        PHP_FE(ibase_blob_add,          arginfo_ibase_blob_add)
        PHP_FE(ibase_blob_cancel,       arginfo_ibase_blob_cancel)
        PHP_FE(ibase_blob_close,        arginfo_ibase_blob_close)
        PHP_FE(ibase_blob_open,         arginfo_ibase_blob_open)
        PHP_FE(ibase_blob_get,          arginfo_ibase_blob_get)
        PHP_FE(ibase_blob_echo,         arginfo_ibase_blob_echo)
        PHP_FE(ibase_blob_import,       arginfo_ibase_blob_import)
        PHP_FE(ibase_errmsg,            arginfo_ibase_errmsg)
        PHP_FE(ibase_errcode,           arginfo_ibase_errcode)

        PHP_FE(ibase_add_user,          arginfo_ibase_add_user)
        PHP_FE(ibase_modify_user,       arginfo_ibase_modify_user)
        PHP_FE(ibase_delete_user,       arginfo_ibase_delete_user)

        PHP_FE(ibase_service_attach, arginfo_ibase_service_attach)
        PHP_FE(ibase_service_detach, arginfo_ibase_service_detach)
        PHP_FE(ibase_backup,            arginfo_ibase_backup)
        PHP_FE(ibase_restore,           arginfo_ibase_restore)
        PHP_FE(ibase_maintain_db,       arginfo_ibase_maintain_db)
        PHP_FE(ibase_db_info,           arginfo_ibase_db_info)
        PHP_FE(ibase_server_info,       arginfo_ibase_server_info)

        PHP_FE(ibase_wait_event,                        arginfo_ibase_wait_event)
        PHP_FE(ibase_set_event_handler,         arginfo_ibase_set_event_handler)
        PHP_FE(ibase_free_event_handler,        arginfo_ibase_free_event_handler)

        /**
        * These aliases are provided in order to maintain forward compatibility. As Firebird
        * and InterBase are developed independently, functionality might be different between
        * the two branches in future versions.
        * Firebird users should use the aliases, so future InterBase-specific changes will
        * not affect their code
        */
        PHP_FALIAS(fbird_connect,               ibase_connect,          arginfo_ibase_connect)
        PHP_FALIAS(fbird_pconnect,              ibase_pconnect,         arginfo_ibase_pconnect)
        PHP_FALIAS(fbird_close,                 ibase_close,            arginfo_ibase_close)
        PHP_FALIAS(fbird_drop_db,               ibase_drop_db,          arginfo_ibase_drop_db)
        PHP_FALIAS(fbird_query,                 ibase_query,            arginfo_ibase_query)
        PHP_FALIAS(fbird_fetch_row,             ibase_fetch_row,        arginfo_ibase_fetch_row)
        PHP_FALIAS(fbird_fetch_assoc,   ibase_fetch_assoc,      arginfo_ibase_fetch_assoc)
        PHP_FALIAS(fbird_fetch_object,  ibase_fetch_object, arginfo_ibase_fetch_object)
        PHP_FALIAS(fbird_free_result,   ibase_free_result,      arginfo_ibase_free_result)
        PHP_FALIAS(fbird_name_result,   ibase_name_result,      arginfo_ibase_name_result)
        PHP_FALIAS(fbird_prepare,               ibase_prepare,          arginfo_ibase_prepare)
        PHP_FALIAS(fbird_execute,               ibase_execute,          arginfo_ibase_execute)
        PHP_FALIAS(fbird_free_query,    ibase_free_query,       arginfo_ibase_free_query)
        PHP_FALIAS(fbird_gen_id,                ibase_gen_id,           arginfo_ibase_gen_id)
        PHP_FALIAS(fbird_num_fields,    ibase_num_fields,       arginfo_ibase_num_fields)
        PHP_FALIAS(fbird_num_params,    ibase_num_params,       arginfo_ibase_num_params)
#if abies_0
        PHP_FALIAS(fbird_num_rows,              ibase_num_rows,         arginfo_ibase_num_rows)
#endif
        PHP_FALIAS(fbird_affected_rows, ibase_affected_rows, arginfo_ibase_affected_rows)
        PHP_FALIAS(fbird_field_info,    ibase_field_info,       arginfo_ibase_field_info)
        PHP_FALIAS(fbird_param_info,    ibase_param_info,       arginfo_ibase_param_info)

        PHP_FALIAS(fbird_trans,                 ibase_trans,            arginfo_ibase_trans)
        PHP_FALIAS(fbird_commit,                ibase_commit,           arginfo_ibase_commit)
        PHP_FALIAS(fbird_rollback,              ibase_rollback,         arginfo_ibase_rollback)
        PHP_FALIAS(fbird_commit_ret,    ibase_commit_ret,       arginfo_ibase_commit_ret)
        PHP_FALIAS(fbird_rollback_ret,  ibase_rollback_ret, arginfo_ibase_rollback_ret)

        PHP_FALIAS(fbird_blob_info,             ibase_blob_info,        arginfo_ibase_blob_info)
        PHP_FALIAS(fbird_blob_create,   ibase_blob_create,      arginfo_ibase_blob_create)
        PHP_FALIAS(fbird_blob_add,              ibase_blob_add,         arginfo_ibase_blob_add)
        PHP_FALIAS(fbird_blob_cancel,   ibase_blob_cancel,      arginfo_ibase_blob_cancel)
        PHP_FALIAS(fbird_blob_close,    ibase_blob_close,       arginfo_ibase_blob_close)
        PHP_FALIAS(fbird_blob_open,             ibase_blob_open,        arginfo_ibase_blob_open)
        PHP_FALIAS(fbird_blob_get,              ibase_blob_get,         arginfo_ibase_blob_get)
        PHP_FALIAS(fbird_blob_echo,             ibase_blob_echo,        arginfo_ibase_blob_echo)
        PHP_FALIAS(fbird_blob_import,   ibase_blob_import,      arginfo_ibase_blob_import)
        PHP_FALIAS(fbird_errmsg,                ibase_errmsg,           arginfo_ibase_errmsg)
        PHP_FALIAS(fbird_errcode,               ibase_errcode,          arginfo_ibase_errcode)

        PHP_FALIAS(fbird_add_user,              ibase_add_user,         arginfo_ibase_add_user)
        PHP_FALIAS(fbird_modify_user,   ibase_modify_user,      arginfo_ibase_modify_user)
        PHP_FALIAS(fbird_delete_user,   ibase_delete_user,      arginfo_ibase_delete_user)

        PHP_FALIAS(fbird_service_attach,        ibase_service_attach, arginfo_ibase_service_attach)
        PHP_FALIAS(fbird_service_detach,        ibase_service_detach, arginfo_ibase_service_detach)
        PHP_FALIAS(fbird_backup,                ibase_backup,           arginfo_ibase_backup)
        PHP_FALIAS(fbird_restore,               ibase_restore,          arginfo_ibase_restore)
        PHP_FALIAS(fbird_maintain_db,   ibase_maintain_db,      arginfo_ibase_maintain_db)
        PHP_FALIAS(fbird_db_info,               ibase_db_info,          arginfo_ibase_db_info)
        PHP_FALIAS(fbird_server_info,   ibase_server_info,      arginfo_ibase_server_info)

        PHP_FALIAS(fbird_wait_event,    ibase_wait_event,       arginfo_ibase_wait_event)
        PHP_FALIAS(fbird_set_event_handler,     ibase_set_event_handler,        arginfo_ibase_set_event_handler)
        PHP_FALIAS(fbird_free_event_handler,    ibase_free_event_handler, arginfo_ibase_free_event_handler)
        PHP_FE_END
};

zend_module_entry ibase_module_entry = {
        STANDARD_MODULE_HEADER,
        "interbase",
        ibase_functions,
        PHP_MINIT(ibase),
        PHP_MSHUTDOWN(ibase),
        NULL,
        PHP_RSHUTDOWN(ibase),
        PHP_MINFO(ibase),
        NO_VERSION_YET,
        PHP_MODULE_GLOBALS(ibase),
        PHP_GINIT(ibase),
        NULL,
        NULL,
        STANDARD_MODULE_PROPERTIES_EX
};

#ifdef COMPILE_DL_INTERBASE
ZEND_GET_MODULE(ibase)
#endif

/* True globals, no need for thread safety */
int le_link, le_plink, le_trans;

/* }}} */

/* error handling ---------------------------- */

/* {{{ proto string ibase_errmsg(void) 
   Return error message */
PHP_FUNCTION(ibase_errmsg)
{
        if (zend_parse_parameters_none() == FAILURE) {
                return;
        }

        if (IBG(sql_code) != 0) {
                RETURN_STRING(IBG(errmsg), 1);
        }

        RETURN_FALSE;
}
/* }}} */

/* {{{ proto int ibase_errcode(void) 
   Return error code */
PHP_FUNCTION(ibase_errcode)
{
        if (zend_parse_parameters_none() == FAILURE) {
                return;
        }

        if (IBG(sql_code) != 0) {
                RETURN_LONG(IBG(sql_code));
        }
        RETURN_FALSE;
}
/* }}} */

/* print interbase error and save it for ibase_errmsg() */
void _php_ibase_error(TSRMLS_D) /* {{{ */
{
        char *s = IBG(errmsg);
        ISC_STATUS *statusp = IB_STATUS;

        IBG(sql_code) = isc_sqlcode(IB_STATUS);
        
        while ((s - IBG(errmsg)) < MAX_ERRMSG - (IBASE_MSGSIZE + 2) && isc_interprete(s, &statusp)) {
                strcat(IBG(errmsg), " ");
                s = IBG(errmsg) + strlen(IBG(errmsg));
        }

        php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", IBG(errmsg));
}
/* }}} */

/* print php interbase module error and save it for ibase_errmsg() */
void _php_ibase_module_error(char *msg TSRMLS_DC, ...) /* {{{ */
{
        va_list ap;

#ifdef ZTS
        va_start(ap, TSRMLS_C);
#else
        va_start(ap, msg);
#endif

        /* vsnprintf NUL terminates the buf and writes at most n-1 chars+NUL */
        vsnprintf(IBG(errmsg), MAX_ERRMSG, msg, ap);
        va_end(ap);

        IBG(sql_code) = -999; /* no SQL error */

        php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", IBG(errmsg));
}
/* }}} */

/* {{{ internal macros, functions and structures */
typedef struct {
        isc_db_handle *db_ptr;
        long tpb_len;
        char *tpb_ptr;
} ISC_TEB;

/* }}} */

/* Fill ib_link and trans with the correct database link and transaction. */
void _php_ibase_get_link_trans(INTERNAL_FUNCTION_PARAMETERS, /* {{{ */
        zval **link_id, ibase_db_link **ib_link, ibase_trans **trans)
{
        int type;

        IBDEBUG("Transaction or database link?");
        if (zend_list_find(Z_LVAL_PP(link_id), &type)) {
                if (type == le_trans) {
                        /* Transaction resource: make sure it refers to one link only, then 
                           fetch it; database link is stored in ib_trans->db_link[]. */
                        IBDEBUG("Type is le_trans");
                        ZEND_FETCH_RESOURCE(*trans, ibase_trans *, link_id, -1, LE_TRANS, le_trans);
                        if ((*trans)->link_cnt > 1) {
                                _php_ibase_module_error("Link id is ambiguous: transaction spans multiple connections."
                                        TSRMLS_CC);
                                return;
                        }                               
                        *ib_link = (*trans)->db_link[0];
                        return;
                }
        } 
        IBDEBUG("Type is le_[p]link or id not found");
        /* Database link resource, use default transaction. */
        *trans = NULL;
        ZEND_FETCH_RESOURCE2(*ib_link, ibase_db_link *, link_id, -1, LE_LINK, le_link, le_plink);
}
/* }}} */       

/* destructors ---------------------- */

static void _php_ibase_commit_link(ibase_db_link *link TSRMLS_DC) /* {{{ */
{
        unsigned short i = 0, j;
        ibase_tr_list *l;
        ibase_event *e;
        IBDEBUG("Checking transactions to close...");

        for (l = link->tr_list; l != NULL; ++i) {
                ibase_tr_list *p = l;
                if (p->trans != NULL) {
                        if (i == 0) {
                                if (p->trans->handle != NULL) {
                                        IBDEBUG("Committing default transaction...");
                                        if (isc_commit_transaction(IB_STATUS, &p->trans->handle)) {
                                                _php_ibase_error(TSRMLS_C);
                                        }
                                }
                                efree(p->trans); /* default transaction is not a registered resource: clean up */
                        } else {
                                if (p->trans->handle != NULL) { 
                                        /* non-default trans might have been rolled back by other call of this dtor */
                                        IBDEBUG("Rolling back other transactions...");
                                        if (isc_rollback_transaction(IB_STATUS, &p->trans->handle)) {
                                                _php_ibase_error(TSRMLS_C);
                                        }
                                }
                                /* set this link pointer to NULL in the transaction */
                                for (j = 0; j < p->trans->link_cnt; ++j) {
                                        if (p->trans->db_link[j] == link) {
                                                p->trans->db_link[j] = NULL;
                                                break;
                                        }
                                }
                        }
                }
                l = l->next;
                efree(p);
        }
        link->tr_list = NULL;
        
        for (e = link->event_head; e; e = e->event_next) {
                _php_ibase_free_event(e TSRMLS_CC);
                e->link = NULL;
        }
}

/* }}} */

static void php_ibase_commit_link_rsrc(zend_rsrc_list_entry *rsrc TSRMLS_DC) /* {{{ */
{
        ibase_db_link *link = (ibase_db_link *) rsrc->ptr;

        _php_ibase_commit_link(link TSRMLS_CC);
}
/* }}} */

static void _php_ibase_close_link(zend_rsrc_list_entry *rsrc TSRMLS_DC) /* {{{ */
{
        ibase_db_link *link = (ibase_db_link *) rsrc->ptr;

        _php_ibase_commit_link(link TSRMLS_CC);
        if (link->handle != NULL) {
                IBDEBUG("Closing normal link...");
                isc_detach_database(IB_STATUS, &link->handle);
        }
        IBG(num_links)--;
        efree(link);
}
/* }}} */

static void _php_ibase_close_plink(zend_rsrc_list_entry *rsrc TSRMLS_DC) /* {{{ */
{
        ibase_db_link *link = (ibase_db_link *) rsrc->ptr;

        _php_ibase_commit_link(link TSRMLS_CC);
        IBDEBUG("Closing permanent link...");
        if (link->handle != NULL) {
                isc_detach_database(IB_STATUS, &link->handle);
        }
        IBG(num_persistent)--;
        IBG(num_links)--;
        free(link);
}
/* }}} */

static void _php_ibase_free_trans(zend_rsrc_list_entry *rsrc TSRMLS_DC) /* {{{ */
{
        ibase_trans *trans = (ibase_trans *)rsrc->ptr;
        unsigned short i;
        
        IBDEBUG("Cleaning up transaction resource...");
        if (trans->handle != NULL) {
                IBDEBUG("Rolling back unhandled transaction...");
                if (isc_rollback_transaction(IB_STATUS, &trans->handle)) {
                        _php_ibase_error(TSRMLS_C);
                }
        }

        /* now remove this transaction from all the connection-transaction lists */
        for (i = 0; i < trans->link_cnt; ++i) {
                if (trans->db_link[i] != NULL) {
                        ibase_tr_list **l;
                        for (l = &trans->db_link[i]->tr_list; *l != NULL; l = &(*l)->next) {
                                if ( (*l)->trans == trans) {
                                        ibase_tr_list *p = *l;
                                        *l = p->next;
                                        efree(p);
                                        break;
                                }
                        }
                }
        }
        efree(trans);
}
/* }}} */

/* TODO this function should be part of either Zend or PHP API */
static PHP_INI_DISP(php_ibase_password_displayer_cb)
{
        TSRMLS_FETCH();

        if ((type == PHP_INI_DISPLAY_ORIG && ini_entry->orig_value) 
                        || (type == PHP_INI_DISPLAY_ACTIVE && ini_entry->value)) {
                PUTS("********");
        } else if (!sapi_module.phpinfo_as_text) {
                PUTS("<i>no value</i>");
        } else {
                PUTS("no value");
        }
}

/* {{{ startup, shutdown and info functions */
PHP_INI_BEGIN()
        PHP_INI_ENTRY_EX("ibase.allow_persistent", "1", PHP_INI_SYSTEM, NULL, zend_ini_boolean_displayer_cb)
        PHP_INI_ENTRY_EX("ibase.max_persistent", "-1", PHP_INI_SYSTEM, NULL, display_link_numbers)
        PHP_INI_ENTRY_EX("ibase.max_links", "-1", PHP_INI_SYSTEM, NULL, display_link_numbers)
        PHP_INI_ENTRY("ibase.default_db", NULL, PHP_INI_SYSTEM, NULL)
        PHP_INI_ENTRY("ibase.default_user", NULL, PHP_INI_ALL, NULL)
        PHP_INI_ENTRY_EX("ibase.default_password", NULL, PHP_INI_ALL, NULL, php_ibase_password_displayer_cb)
        PHP_INI_ENTRY("ibase.default_charset", NULL, PHP_INI_ALL, NULL)
        PHP_INI_ENTRY("ibase.timestampformat", IB_DEF_DATE_FMT " " IB_DEF_TIME_FMT, PHP_INI_ALL, NULL)
        PHP_INI_ENTRY("ibase.dateformat", IB_DEF_DATE_FMT, PHP_INI_ALL, NULL)
        PHP_INI_ENTRY("ibase.timeformat", IB_DEF_TIME_FMT, PHP_INI_ALL, NULL)
PHP_INI_END()

static PHP_GINIT_FUNCTION(ibase)
{
        ibase_globals->num_persistent = ibase_globals->num_links = 0;
        ibase_globals->sql_code = *ibase_globals->errmsg = 0;
        ibase_globals->default_link = -1;
}

PHP_MINIT_FUNCTION(ibase)
{
        REGISTER_INI_ENTRIES();

        le_link = zend_register_list_destructors_ex(_php_ibase_close_link, NULL, LE_LINK, module_number);
        le_plink = zend_register_list_destructors_ex(php_ibase_commit_link_rsrc, _php_ibase_close_plink, LE_PLINK, module_number);
        le_trans = zend_register_list_destructors_ex(_php_ibase_free_trans, NULL, LE_TRANS, module_number);

        REGISTER_LONG_CONSTANT("IBASE_DEFAULT", PHP_IBASE_DEFAULT, CONST_PERSISTENT);
        REGISTER_LONG_CONSTANT("IBASE_CREATE", PHP_IBASE_CREATE, CONST_PERSISTENT);
        REGISTER_LONG_CONSTANT("IBASE_TEXT", PHP_IBASE_FETCH_BLOBS, CONST_PERSISTENT); /* deprecated, for BC only */
        REGISTER_LONG_CONSTANT("IBASE_FETCH_BLOBS", PHP_IBASE_FETCH_BLOBS, CONST_PERSISTENT);
        REGISTER_LONG_CONSTANT("IBASE_FETCH_ARRAYS", PHP_IBASE_FETCH_ARRAYS, CONST_PERSISTENT);
        REGISTER_LONG_CONSTANT("IBASE_UNIXTIME", PHP_IBASE_UNIXTIME, CONST_PERSISTENT);

        /* transactions */
        REGISTER_LONG_CONSTANT("IBASE_WRITE", PHP_IBASE_WRITE, CONST_PERSISTENT);
        REGISTER_LONG_CONSTANT("IBASE_READ", PHP_IBASE_READ, CONST_PERSISTENT);
        REGISTER_LONG_CONSTANT("IBASE_COMMITTED", PHP_IBASE_COMMITTED, CONST_PERSISTENT);
        REGISTER_LONG_CONSTANT("IBASE_CONSISTENCY", PHP_IBASE_CONSISTENCY, CONST_PERSISTENT);
        REGISTER_LONG_CONSTANT("IBASE_CONCURRENCY", PHP_IBASE_CONCURRENCY, CONST_PERSISTENT);
        REGISTER_LONG_CONSTANT("IBASE_REC_VERSION", PHP_IBASE_REC_VERSION, CONST_PERSISTENT);
        REGISTER_LONG_CONSTANT("IBASE_REC_NO_VERSION", PHP_IBASE_REC_NO_VERSION, CONST_PERSISTENT);
        REGISTER_LONG_CONSTANT("IBASE_NOWAIT", PHP_IBASE_NOWAIT, CONST_PERSISTENT);
        REGISTER_LONG_CONSTANT("IBASE_WAIT", PHP_IBASE_WAIT, CONST_PERSISTENT);

        php_ibase_query_minit(INIT_FUNC_ARGS_PASSTHRU);
        php_ibase_blobs_minit(INIT_FUNC_ARGS_PASSTHRU);
        php_ibase_events_minit(INIT_FUNC_ARGS_PASSTHRU);
        php_ibase_service_minit(INIT_FUNC_ARGS_PASSTHRU);
        
        return SUCCESS;          
}                            
                             
PHP_MSHUTDOWN_FUNCTION(ibase)
{
#ifndef PHP_WIN32
        /**
         * When the Interbase client API library libgds.so is first loaded, it registers a call to 
         * gds__cleanup() with atexit(), in order to clean up after itself when the process exits.
         * This means that the library is called at process shutdown, and cannot be unloaded beforehand.
         * PHP tries to unload modules after every request [dl()'ed modules], and right before the 
         * process shuts down [modules loaded from php.ini]. This results in a segfault for this module.
         * By NULLing the dlopen() handle in the module entry, Zend omits the call to dlclose(),
         * ensuring that the module will remain present until the process exits. However, the functions
         * and classes exported by the module will not be available until the module is 'reloaded'. 
         * When reloaded, dlopen() will return the handle of the already loaded module. The module will
         * be unloaded automatically when the process exits.
         */
        zend_module_entry *ibase_entry;
        if (SUCCESS == zend_hash_find(&module_registry, ibase_module_entry.name,
                        strlen(ibase_module_entry.name) +1, (void*) &ibase_entry)) {
                ibase_entry->handle = NULL;
        }
#endif
        UNREGISTER_INI_ENTRIES();
        return SUCCESS;
}

PHP_RSHUTDOWN_FUNCTION(ibase)
{
        IBG(num_links) = IBG(num_persistent);
        IBG(default_link)= -1;

        RESET_ERRMSG;

        return SUCCESS;
} 
 
PHP_MINFO_FUNCTION(ibase)
{
        char tmp[64], *s;

        php_info_print_table_start();
        php_info_print_table_row(2, "Firebird/InterBase Support", 
#ifdef COMPILE_DL_INTERBASE
                "dynamic");
#else
                "static");
#endif

#ifdef FB_API_VER
        snprintf( (s = tmp), sizeof(tmp), "Firebird API version %d", FB_API_VER);
#elif (SQLDA_CURRENT_VERSION > 1)
        s =  "Interbase 7.0 and up";
#elif !defined(DSC_null)
        s = "Interbase 6";
#else
        s = "Firebird 1.0";
#endif
        php_info_print_table_row(2, "Compile-time Client Library Version", s);

#if defined(__GNUC__) || defined(PHP_WIN32)
        do {
                info_func_t info_func = NULL;
#ifdef __GNUC__
                info_func = (info_func_t)dlsym(RTLD_DEFAULT, "isc_get_client_version");
#else
                HMODULE l = GetModuleHandle("fbclient");

                if (!l && !(l = GetModuleHandle("gds32"))) {
                        break;
                }
                info_func = (info_func_t)GetProcAddress(l, "isc_get_client_version");
#endif
                if (info_func) {
                        info_func(s = tmp);
                } else {
                        s = "Firebird 1.0/Interbase 6";
                }
                php_info_print_table_row(2, "Run-time Client Library Version", s);
        } while (0);
#endif                  
        php_info_print_table_end();

        DISPLAY_INI_ENTRIES();

}
/* }}} */

enum connect_args { DB = 0, USER = 1, PASS = 2, CSET = 3, ROLE = 4, BUF = 0, DLECT = 1, SYNC = 2 };
        
static char const dpb_args[] = { 
        0, isc_dpb_user_name, isc_dpb_password, isc_dpb_lc_ctype, isc_dpb_sql_role_name, 0
};
        
int _php_ibase_attach_db(char **args, int *len, long *largs, isc_db_handle *db TSRMLS_DC)
{
        short i, dpb_len, buf_len = 257-2;  /* version byte at the front, and a null at the end */
        char dpb_buffer[257] = { isc_dpb_version1, 0 }, *dpb;

        dpb = dpb_buffer + 1;

        for (i = 0; i < sizeof(dpb_args); ++i) {
                if (dpb_args[i] && args[i] && len[i] && buf_len > 0) {
                        dpb_len = slprintf(dpb, buf_len, "%c%c%s", dpb_args[i],(unsigned char)len[i],args[i]);
                        dpb += dpb_len;
                        buf_len -= dpb_len;
                }
        }
        if (largs[BUF] && buf_len > 0) {
                dpb_len = slprintf(dpb, buf_len, "%c\2%c%c", isc_dpb_num_buffers, 
                        (char)(largs[BUF] >> 8), (char)(largs[BUF] & 0xff));
                dpb += dpb_len;
                buf_len -= dpb_len;
        }
        if (largs[SYNC] && buf_len > 0) {
                dpb_len = slprintf(dpb, buf_len, "%c\1%c", isc_dpb_force_write, largs[SYNC] == isc_spb_prp_wm_sync ? 1 : 0);
                dpb += dpb_len;
                buf_len -= dpb_len;
        }
        if (isc_attach_database(IB_STATUS, (short)len[DB], args[DB], db, (short)(dpb-dpb_buffer), dpb_buffer)) {
                _php_ibase_error(TSRMLS_C);
                return FAILURE;
        }
        return SUCCESS;
}
/* }}} */

static void _php_ibase_connect(INTERNAL_FUNCTION_PARAMETERS, int persistent) /* {{{ */
{
        char *c, hash[16], *args[] = { NULL, NULL, NULL, NULL, NULL };
        int i, len[] = { 0, 0, 0, 0, 0 };
        long largs[] = { 0, 0, 0 };
        PHP_MD5_CTX hash_context;
        zend_rsrc_list_entry new_index_ptr, *le;
        isc_db_handle db_handle = NULL;
        ibase_db_link *ib_link;

        RESET_ERRMSG;

        if (FAILURE == zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|ssssllsl",
                        &args[DB], &len[DB], &args[USER], &len[USER], &args[PASS], &len[PASS],
                        &args[CSET], &len[CSET], &largs[BUF], &largs[DLECT], &args[ROLE], &len[ROLE],
                        &largs[SYNC])) {
                RETURN_FALSE;
        }
        
        /* restrict to the server/db in the .ini if in safe mode */
        if ((!len[DB] || PG(sql_safe_mode)) && (c = INI_STR("ibase.default_db"))) { 
                args[DB] = c;
                len[DB] = strlen(c);
        }
        if (!len[USER] && (c = INI_STR("ibase.default_user"))) {
                args[USER] = c;
                len[USER] = strlen(c);
        }
        if (!len[PASS] && (c = INI_STR("ibase.default_password"))) {
                args[PASS] = c;
                len[PASS] = strlen(c);
        }
        if (!len[CSET] && (c = INI_STR("ibase.default_charset"))) {
                args[CSET] = c;
                len[CSET] = strlen(c);
        }
        
        /* don't want usernames and passwords floating around */
        PHP_MD5Init(&hash_context);
        for (i = 0; i < sizeof(args)/sizeof(char*); ++i) {
                PHP_MD5Update(&hash_context,args[i],len[i]);
        }
        for (i = 0; i < sizeof(largs)/sizeof(long); ++i) {
                PHP_MD5Update(&hash_context,(char*)&largs[i],sizeof(long));
        }
        PHP_MD5Final(hash, &hash_context);
        
        /* try to reuse a connection */
        if (SUCCESS == zend_hash_find(&EG(regular_list), hash, sizeof(hash), (void *) &le)) {
                long xlink;
                int type;

                if (Z_TYPE_P(le) != le_index_ptr) {
                        RETURN_FALSE;
                }
                        
                xlink = (long) le->ptr;
                if (zend_list_find(xlink, &type) && ((!persistent && type == le_link) || type == le_plink)) {
                        zend_list_addref(xlink);
                        RETURN_RESOURCE(IBG(default_link) = xlink);
                } else {
                        zend_hash_del(&EG(regular_list), hash, sizeof(hash));
                }
        }               

        /* ... or a persistent one */
        switch (zend_hash_find(&EG(persistent_list), hash, sizeof(hash), (void *) &le)) {
                long l;
                
                static char info[] = { isc_info_base_level, isc_info_end };
                char result[8];
                ISC_STATUS status[20];

        case SUCCESS:

                if (Z_TYPE_P(le) != le_plink) {
                        RETURN_FALSE;
                }
                /* check if connection has timed out */
                ib_link = (ibase_db_link *) le->ptr;
                if (!isc_database_info(status, &ib_link->handle, sizeof(info), info, sizeof(result), result)) {
                        ZEND_REGISTER_RESOURCE(return_value, ib_link, le_plink);
                        break;
                }
                zend_hash_del(&EG(persistent_list), hash, sizeof(hash));
        
        default:

                /* no link found, so we have to open one */
        
                if ((l = INI_INT("ibase.max_links")) != -1 && IBG(num_links) >= l) {
                        _php_ibase_module_error("Too many open links (%ld)" TSRMLS_CC, IBG(num_links));
                        RETURN_FALSE;
                }
        
                /* create the ib_link */
                if (FAILURE == _php_ibase_attach_db(args, len, largs, &db_handle TSRMLS_CC)) {
                        RETURN_FALSE;
                }
        
                /* use non-persistent if allowed number of persistent links is exceeded */
                if (!persistent || ((l = INI_INT("ibase.max_persistent") != -1) && IBG(num_persistent) >= l)) {
                        ib_link = (ibase_db_link *) emalloc(sizeof(ibase_db_link));
                        ZEND_REGISTER_RESOURCE(return_value, ib_link, le_link);
                } else {
                        zend_rsrc_list_entry new_le;

                        ib_link = (ibase_db_link *) malloc(sizeof(ibase_db_link));
                        if (!ib_link) {
                                RETURN_FALSE;
                        }

                        /* hash it up */
                        Z_TYPE(new_le) = le_plink;
                        new_le.ptr = ib_link;
                        if (FAILURE == zend_hash_update(&EG(persistent_list), hash, sizeof(hash),
                                        (void *) &new_le, sizeof(zend_rsrc_list_entry), NULL)) {
                                free(ib_link);
                                RETURN_FALSE;
                        }
                        ZEND_REGISTER_RESOURCE(return_value, ib_link, le_plink);
                        ++IBG(num_persistent);
                }
                ib_link->handle = db_handle;
                ib_link->dialect = largs[DLECT] ? (unsigned short)largs[DLECT] : SQL_DIALECT_CURRENT;
                ib_link->tr_list = NULL;
                ib_link->event_head = NULL;
        
                ++IBG(num_links);
        }

        /* add it to the hash */
        new_index_ptr.ptr = (void *) Z_LVAL_P(return_value);
        Z_TYPE(new_index_ptr) = le_index_ptr;
        if (FAILURE == zend_hash_update(&EG(regular_list), hash, sizeof(hash),
                        (void *) &new_index_ptr, sizeof(zend_rsrc_list_entry), NULL)) {
                RETURN_FALSE;
        }
        zend_list_addref(IBG(default_link) = Z_LVAL_P(return_value));
}
/* }}} */

/* {{{ proto resource ibase_connect(string database [, string username [, string password [, string charset [, int buffers [, int dialect [, string role]]]]]])
   Open a connection to an InterBase database */
PHP_FUNCTION(ibase_connect)
{
        _php_ibase_connect(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */

/* {{{ proto resource ibase_pconnect(string database [, string username [, string password [, string charset [, int buffers [, int dialect [, string role]]]]]])
   Open a persistent connection to an InterBase database */
PHP_FUNCTION(ibase_pconnect)
{
        _php_ibase_connect(INTERNAL_FUNCTION_PARAM_PASSTHRU, INI_INT("ibase.allow_persistent"));
}
/* }}} */

/* {{{ proto bool ibase_close([resource link_identifier])
   Close an InterBase connection */
PHP_FUNCTION(ibase_close)
{
        zval *link_arg = NULL;
        ibase_db_link *ib_link;
        int link_id;

        RESET_ERRMSG;
        
        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|r", &link_arg) == FAILURE) {
                return;
        }
        
        if (ZEND_NUM_ARGS() == 0) {
                link_id = IBG(default_link);
                CHECK_LINK(link_id);
                IBG(default_link) = -1;
        } else {
                link_id = Z_RESVAL_P(link_arg);
        }

        ZEND_FETCH_RESOURCE2(ib_link, ibase_db_link *, &link_arg, link_id, LE_LINK, le_link, le_plink);
        zend_list_delete(link_id);
        RETURN_TRUE;
}
/* }}} */

/* {{{ proto bool ibase_drop_db([resource link_identifier])
   Drop an InterBase database */
PHP_FUNCTION(ibase_drop_db)
{
        zval *link_arg = NULL;
        ibase_db_link *ib_link;
        ibase_tr_list *l;
        int link_id;

        RESET_ERRMSG;
        
        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|r", &link_arg) == FAILURE) {
                return;
        }
        
        if (ZEND_NUM_ARGS() == 0) {
                link_id = IBG(default_link);
                CHECK_LINK(link_id);
                IBG(default_link) = -1;
        } else {
                link_id = Z_RESVAL_P(link_arg);
        }
        
        ZEND_FETCH_RESOURCE2(ib_link, ibase_db_link *, &link_arg, link_id, LE_LINK, le_link, le_plink);

        if (isc_drop_database(IB_STATUS, &ib_link->handle)) {
                _php_ibase_error(TSRMLS_C);
                RETURN_FALSE;
        }

        /* isc_drop_database() doesn't invalidate the transaction handles */
        for (l = ib_link->tr_list; l != NULL; l = l->next) {
                if (l->trans != NULL) l->trans->handle = NULL;
        }

        zend_list_delete(link_id);
        RETURN_TRUE;
}
/* }}} */

/* {{{ proto resource ibase_trans([int trans_args [, resource link_identifier [, ... ], int trans_args [, resource link_identifier [, ... ]] [, ...]]])
   Start a transaction over one or several databases */

#define TPB_MAX_SIZE (8*sizeof(char))

PHP_FUNCTION(ibase_trans)
{
        unsigned short i, link_cnt = 0, tpb_len = 0;
        int argn;
        char last_tpb[TPB_MAX_SIZE];
        ibase_db_link **ib_link = NULL;
        ibase_trans *ib_trans;
        isc_tr_handle tr_handle = NULL;
        ISC_STATUS result;
        
        RESET_ERRMSG;

        argn = ZEND_NUM_ARGS();

        /* (1+argn) is an upper bound for the number of links this trans connects to */
        ib_link = (ibase_db_link **) safe_emalloc(sizeof(ibase_db_link *),1+argn,0);
        
        if (argn > 0) {
                long trans_argl = 0;
                char *tpb;
                ISC_TEB *teb;
                zval ***args = NULL;

                if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "+", &args, &argn) == FAILURE) {
                        efree(args);
                        efree(ib_link);
                        RETURN_FALSE;
                }

                teb = (ISC_TEB *) safe_emalloc(sizeof(ISC_TEB),argn,0);
                tpb = (char *) safe_emalloc(TPB_MAX_SIZE,argn,0);

                /* enumerate all the arguments: assume every non-resource argument 
                   specifies modifiers for the link ids that follow it */
                for (i = 0; i < argn; ++i) {
                        
                        if (Z_TYPE_PP(args[i]) == IS_RESOURCE) {
                                
                                if (!ZEND_FETCH_RESOURCE2_NO_RETURN(ib_link[link_cnt], ibase_db_link *, args[i], -1, LE_LINK, le_link, le_plink)) {
                                        efree(teb);
                                        efree(tpb);
                                        efree(ib_link);
                                        efree(args);
                                        RETURN_FALSE;
                                }
        
                                /* copy the most recent modifier string into tbp[] */
                                memcpy(&tpb[TPB_MAX_SIZE * link_cnt], last_tpb, TPB_MAX_SIZE);

                                /* add a database handle to the TEB with the most recently specified set of modifiers */
                                teb[link_cnt].db_ptr = &ib_link[link_cnt]->handle;
                                teb[link_cnt].tpb_len = tpb_len;
                                teb[link_cnt].tpb_ptr = &tpb[TPB_MAX_SIZE * link_cnt];
                                
                                ++link_cnt;
                                
                        } else {
                                
                                tpb_len = 0;

                                convert_to_long_ex(args[i]);
                                trans_argl = Z_LVAL_PP(args[i]);

                                if (trans_argl != PHP_IBASE_DEFAULT) {
                                        last_tpb[tpb_len++] = isc_tpb_version3;

                                        /* access mode */
                                        if (PHP_IBASE_READ == (trans_argl & PHP_IBASE_READ)) {
                                                last_tpb[tpb_len++] = isc_tpb_read;
                                        } else if (PHP_IBASE_WRITE == (trans_argl & PHP_IBASE_WRITE)) {
                                                last_tpb[tpb_len++] = isc_tpb_write;
                                        }

                                        /* isolation level */
                                        if (PHP_IBASE_COMMITTED == (trans_argl & PHP_IBASE_COMMITTED)) {
                                                last_tpb[tpb_len++] = isc_tpb_read_committed;
                                                if (PHP_IBASE_REC_VERSION == (trans_argl & PHP_IBASE_REC_VERSION)) {
                                                        last_tpb[tpb_len++] = isc_tpb_rec_version;
                                                } else if (PHP_IBASE_REC_NO_VERSION == (trans_argl & PHP_IBASE_REC_NO_VERSION)) {
                                                        last_tpb[tpb_len++] = isc_tpb_no_rec_version; 
                                                }       
                                        } else if (PHP_IBASE_CONSISTENCY == (trans_argl & PHP_IBASE_CONSISTENCY)) {
                                                last_tpb[tpb_len++] = isc_tpb_consistency;
                                        } else if (PHP_IBASE_CONCURRENCY == (trans_argl & PHP_IBASE_CONCURRENCY)) {
                                                last_tpb[tpb_len++] = isc_tpb_concurrency;
                                        }
                                        
                                        /* lock resolution */
                                        if (PHP_IBASE_NOWAIT == (trans_argl & PHP_IBASE_NOWAIT)) {
                                                last_tpb[tpb_len++] = isc_tpb_nowait;
                                        } else if (PHP_IBASE_WAIT == (trans_argl & PHP_IBASE_WAIT)) {
                                                last_tpb[tpb_len++] = isc_tpb_wait;
                                        }
                                }
                        }
                }       
                                        
                if (link_cnt > 0) {
                        result = isc_start_multiple(IB_STATUS, &tr_handle, link_cnt, teb);
                }

                efree(args);
                efree(tpb);
                efree(teb);
        }

        if (link_cnt == 0) {
                link_cnt = 1;
                if (!ZEND_FETCH_RESOURCE2_NO_RETURN(ib_link[0], ibase_db_link *, NULL, IBG(default_link), LE_LINK, le_link, le_plink)) {
                        efree(ib_link);
                        RETURN_FALSE;
                }
                result = isc_start_transaction(IB_STATUS, &tr_handle, 1, &ib_link[0]->handle, tpb_len, last_tpb);
        }
        
        /* start the transaction */
        if (result) {
                _php_ibase_error(TSRMLS_C);
                efree(ib_link);
                RETURN_FALSE;
        }

        /* register the transaction in our own data structures */
        ib_trans = (ibase_trans *) safe_emalloc(link_cnt-1, sizeof(ibase_db_link *), sizeof(ibase_trans));
        ib_trans->handle = tr_handle;
        ib_trans->link_cnt = link_cnt;
        ib_trans->affected_rows = 0;
        for (i = 0; i < link_cnt; ++i) {
                ibase_tr_list **l;
                ib_trans->db_link[i] = ib_link[i];
                
                /* the first item in the connection-transaction list is reserved for the default transaction */
                if (ib_link[i]->tr_list == NULL) {
                        ib_link[i]->tr_list = (ibase_tr_list *) emalloc(sizeof(ibase_tr_list));
                        ib_link[i]->tr_list->trans = NULL;
                        ib_link[i]->tr_list->next = NULL;
                }

                /* link the transaction into the connection-transaction list */
                for (l = &ib_link[i]->tr_list; *l != NULL; l = &(*l)->next);
                *l = (ibase_tr_list *) emalloc(sizeof(ibase_tr_list));
                (*l)->trans = ib_trans;
                (*l)->next = NULL;
        }
        efree(ib_link);
        ZEND_REGISTER_RESOURCE(return_value, ib_trans, le_trans);
}
/* }}} */

int _php_ibase_def_trans(ibase_db_link *ib_link, ibase_trans **trans TSRMLS_DC) /* {{{ */
{
        if (ib_link == NULL) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid database link");
                return FAILURE;
        }

        /* the first item in the connection-transaction list is reserved for the default transaction */
        if (ib_link->tr_list == NULL) {
                ib_link->tr_list = (ibase_tr_list *) emalloc(sizeof(ibase_tr_list));
                ib_link->tr_list->trans = NULL;
                ib_link->tr_list->next = NULL;
        }

        if (*trans == NULL) {
                ibase_trans *tr = ib_link->tr_list->trans;

                if (tr == NULL) {
                        tr = (ibase_trans *) emalloc(sizeof(ibase_trans));
                        tr->handle = NULL;
                        tr->link_cnt = 1;
                        tr->affected_rows = 0;
                        tr->db_link[0] = ib_link;
                        ib_link->tr_list->trans = tr;
                }
                if (tr->handle == NULL) {
                        if (isc_start_transaction(IB_STATUS, &tr->handle, 1, &ib_link->handle, 0, NULL)) {
                                _php_ibase_error(TSRMLS_C);
                                return FAILURE;
                        }
                }
                *trans = tr;
        }
        return SUCCESS;
}
/* }}} */

static void _php_ibase_trans_end(INTERNAL_FUNCTION_PARAMETERS, int commit) /* {{{ */
{
        ibase_trans *trans = NULL;
        int res_id = 0;
        ISC_STATUS result;
        ibase_db_link *ib_link;
        zval *arg = NULL;
        int type;

        RESET_ERRMSG;
        
        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|r", &arg) == FAILURE) {
                return;
        }

        if (ZEND_NUM_ARGS() == 0) {
                ZEND_FETCH_RESOURCE2(ib_link, ibase_db_link *, NULL, IBG(default_link), LE_LINK, le_link, le_plink);
                if (ib_link->tr_list == NULL || ib_link->tr_list->trans == NULL) {
                        /* this link doesn't have a default transaction */
                        _php_ibase_module_error("Default link has no default transaction" TSRMLS_CC);
                        RETURN_FALSE;
                }
                trans = ib_link->tr_list->trans;
        } else {
                /* one id was passed, could be db or trans id */
                if (zend_list_find(Z_RESVAL_P(arg), &type) && type == le_trans) {
                        ZEND_FETCH_RESOURCE(trans, ibase_trans *, &arg, -1, LE_TRANS, le_trans);
                        res_id = Z_RESVAL_P(arg);
                } else {
                        ZEND_FETCH_RESOURCE2(ib_link, ibase_db_link *, &arg, -1, LE_LINK, le_link, le_plink);

                        if (ib_link->tr_list == NULL || ib_link->tr_list->trans == NULL) {
                                /* this link doesn't have a default transaction */
                                _php_ibase_module_error("Link has no default transaction" TSRMLS_CC);
                                RETURN_FALSE;
                        }
                        trans = ib_link->tr_list->trans;
                }
        }

        switch (commit) {
                default: /* == case ROLLBACK: */
                        result = isc_rollback_transaction(IB_STATUS, &trans->handle);
                        break;
                case COMMIT:
                        result = isc_commit_transaction(IB_STATUS, &trans->handle);
                        break;
                case (ROLLBACK | RETAIN):
                        result = isc_rollback_retaining(IB_STATUS, &trans->handle);
                        break;
                case (COMMIT | RETAIN):
                        result = isc_commit_retaining(IB_STATUS, &trans->handle);
                        break;
        }
        
        if (result) {
                _php_ibase_error(TSRMLS_C);
                RETURN_FALSE;
        }

        /* Don't try to destroy implicitly opened transaction from list... */
        if ((commit & RETAIN) == 0 && res_id != 0) {
                zend_list_delete(res_id);
        }
        RETURN_TRUE;
}
/* }}} */

/* {{{ proto bool ibase_commit( resource link_identifier )
   Commit transaction */
PHP_FUNCTION(ibase_commit)
{
        _php_ibase_trans_end(INTERNAL_FUNCTION_PARAM_PASSTHRU, COMMIT);
}
/* }}} */

/* {{{ proto bool ibase_rollback( resource link_identifier )
   Rollback transaction */
PHP_FUNCTION(ibase_rollback)
{
        _php_ibase_trans_end(INTERNAL_FUNCTION_PARAM_PASSTHRU, ROLLBACK);
}
/* }}} */

/* {{{ proto bool ibase_commit_ret( resource link_identifier )
   Commit transaction and retain the transaction context */
PHP_FUNCTION(ibase_commit_ret)
{
        _php_ibase_trans_end(INTERNAL_FUNCTION_PARAM_PASSTHRU, COMMIT | RETAIN);
}
/* }}} */

/* {{{ proto bool ibase_rollback_ret( resource link_identifier )
   Rollback transaction and retain the transaction context */
PHP_FUNCTION(ibase_rollback_ret)
{
        _php_ibase_trans_end(INTERNAL_FUNCTION_PARAM_PASSTHRU, ROLLBACK | RETAIN);
}
/* }}} */

/* {{{ proto int ibase_gen_id(string generator [, int increment [, resource link_identifier ]])
   Increments the named generator and returns its new value */
PHP_FUNCTION(ibase_gen_id)
{
        zval *link = NULL;
        char query[128], *generator;
        int gen_len;
        long inc = 1;
        ibase_db_link *ib_link;
        ibase_trans *trans = NULL;
        XSQLDA out_sqlda;
        ISC_INT64 result;

        RESET_ERRMSG;

        if (FAILURE == zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|lr", &generator, &gen_len,
                        &inc, &link)) {
                RETURN_FALSE;
        }
        
        if (gen_len > 31) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid generator name");
                RETURN_FALSE;
        }

        PHP_IBASE_LINK_TRANS(link, ib_link, trans);
        
        snprintf(query, sizeof(query), "SELECT GEN_ID(%s,%ld) FROM rdb$database", generator, inc);

        /* allocate a minimal descriptor area */
        out_sqlda.sqln = out_sqlda.sqld = 1;
        out_sqlda.version = SQLDA_CURRENT_VERSION;
        
        /* allocate the field for the result */
        out_sqlda.sqlvar[0].sqltype = SQL_INT64;
        out_sqlda.sqlvar[0].sqlscale = 0;
        out_sqlda.sqlvar[0].sqllen = sizeof(result);
        out_sqlda.sqlvar[0].sqldata = (void*) &result;

        /* execute the query */
        if (isc_dsql_exec_immed2(IB_STATUS, &ib_link->handle, &trans->handle, 0, query,
                        SQL_DIALECT_CURRENT, NULL, &out_sqlda)) {
                _php_ibase_error(TSRMLS_C);
                RETURN_FALSE;
        }

        /* don't return the generator value as a string unless it doesn't fit in a long */
#if SIZEOF_LONG < 8
        if (result < LONG_MIN || result > LONG_MAX) {
                char *res;
                int l;

                l = spprintf(&res, 0, "%" LL_MASK "d", result);
                RETURN_STRINGL(res, l, 0);
        }
#endif
        RETURN_LONG((long)result);
}

/* }}} */
    
#endif /* HAVE_IBASE */

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

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