root/ext/sybase_ct/php_sybase_ct.c

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

DEFINITIONS

This source file includes following definitions.
  1. ZEND_GET_MODULE
  2. _clean_invalid_results
  3. _free_sybase_result
  4. php_free_sybase_result
  5. _close_sybase_link
  6. _close_sybase_plink
  7. _client_message_handler
  8. _call_message_handler
  9. _server_message_handler
  10. PHP_INI_BEGIN
  11. PHP_GSHUTDOWN_FUNCTION
  12. PHP_MINIT_FUNCTION
  13. PHP_RINIT_FUNCTION
  14. PHP_MSHUTDOWN_FUNCTION
  15. PHP_RSHUTDOWN_FUNCTION
  16. php_sybase_do_connect_internal
  17. php_sybase_do_connect
  18. php_sybase_get_default_link
  19. PHP_FUNCTION
  20. PHP_FUNCTION
  21. php_sybase_connection_id
  22. PHP_FUNCTION
  23. exec_cmd
  24. PHP_FUNCTION
  25. php_sybase_finish_results
  26. php_sybase_fetch_result_row
  27. php_sybase_fetch_result_set
  28. php_sybase_query
  29. PHP_FUNCTION
  30. PHP_FUNCTION
  31. PHP_FUNCTION
  32. PHP_FUNCTION
  33. PHP_FUNCTION
  34. PHP_FUNCTION
  35. PHP_FUNCTION
  36. php_sybase_fetch_hash
  37. PHP_FUNCTION
  38. PHP_FUNCTION
  39. PHP_FUNCTION
  40. PHP_FUNCTION
  41. php_sybase_get_field_name
  42. PHP_FUNCTION
  43. PHP_FUNCTION
  44. PHP_FUNCTION
  45. PHP_FUNCTION
  46. PHP_MINFO_FUNCTION
  47. PHP_FUNCTION
  48. PHP_FUNCTION
  49. PHP_FUNCTION
  50. PHP_FUNCTION

/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2015 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: Zeev Suraski <zeev@zend.com>                                |
   |          Tom May <tom@go2net.com>                                    |
   |          Timm Friebe <php_sybase_ct@thekid.de>                       |
   +----------------------------------------------------------------------+
 */

/* $Id$ */


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

#include "php.h"
#include "php_sybase_ct.h"
#include "ext/standard/php_standard.h"
#include "ext/standard/info.h"
#include "php_globals.h"
#include "php_ini.h"

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

#if HAVE_SYBASE_CT

ZEND_DECLARE_MODULE_GLOBALS(sybase)
static PHP_GINIT_FUNCTION(sybase);
static PHP_GSHUTDOWN_FUNCTION(sybase);

/* {{{ arginfo */
ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_connect, 0, 0, 0)
        ZEND_ARG_INFO(0, host)
        ZEND_ARG_INFO(0, user)
        ZEND_ARG_INFO(0, password)
        ZEND_ARG_INFO(0, charset)
        ZEND_ARG_INFO(0, appname)
        ZEND_ARG_INFO(0, new)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_pconnect, 0, 0, 0)
        ZEND_ARG_INFO(0, host)
        ZEND_ARG_INFO(0, user)
        ZEND_ARG_INFO(0, password)
        ZEND_ARG_INFO(0, charset)
        ZEND_ARG_INFO(0, appname)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_close, 0, 0, 0)
        ZEND_ARG_INFO(0, link_id)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_select_db, 0, 0, 1)
        ZEND_ARG_INFO(0, database)
        ZEND_ARG_INFO(0, link_id)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_query, 0, 0, 1)
        ZEND_ARG_INFO(0, query)
        ZEND_ARG_INFO(0, link_id)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_unbuffered_query, 0, 0, 1)
        ZEND_ARG_INFO(0, query)
        ZEND_ARG_INFO(0, link_id)
ZEND_END_ARG_INFO()

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

ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_get_last_message, 0, 0, 1)
        ZEND_ARG_INFO(0, d)
ZEND_END_ARG_INFO()

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

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

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

ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_fetch_object, 0, 0, 1)
        ZEND_ARG_INFO(0, result)
        ZEND_ARG_INFO(0, object)
ZEND_END_ARG_INFO()

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

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

ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_data_seek, 0, 0, 2)
        ZEND_ARG_INFO(0, result)
        ZEND_ARG_INFO(0, offset)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_fetch_field, 0, 0, 1)
        ZEND_ARG_INFO(0, result)
        ZEND_ARG_INFO(0, offset)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_field_seek, 0, 0, 2)
        ZEND_ARG_INFO(0, result)
        ZEND_ARG_INFO(0, offset)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_result, 0, 0, 3)
        ZEND_ARG_INFO(0, result)
        ZEND_ARG_INFO(0, row)
        ZEND_ARG_INFO(0, field)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_affected_rows, 0, 0, 0)
        ZEND_ARG_INFO(0, link_id)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_min_client_severity, 0, 0, 1)
        ZEND_ARG_INFO(0, severity)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_min_server_severity, 0, 0, 1)
        ZEND_ARG_INFO(0, severity)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_deadlock_retry_count, 0, 0, 1)
        ZEND_ARG_INFO(0, retry_count)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_set_message_handler, 0, 0, 1)
        ZEND_ARG_INFO(0, error_func)
        ZEND_ARG_INFO(0, connection)
ZEND_END_ARG_INFO()
/* }}} */

const zend_function_entry sybase_functions[] = {
        PHP_FE(sybase_connect,                          arginfo_sybase_connect)
        PHP_FE(sybase_pconnect,                         arginfo_sybase_pconnect)
        PHP_FE(sybase_close,                            arginfo_sybase_close)
        PHP_FE(sybase_select_db,                        arginfo_sybase_select_db)
        PHP_FE(sybase_query,                            arginfo_sybase_query)
        PHP_FE(sybase_unbuffered_query,         arginfo_sybase_unbuffered_query)
        PHP_FE(sybase_free_result,                      arginfo_sybase_free_result)
        PHP_FE(sybase_get_last_message,         arginfo_sybase_get_last_message)
        PHP_FE(sybase_num_rows,                         arginfo_sybase_num_rows)
        PHP_FE(sybase_num_fields,                       arginfo_sybase_num_fields)
        PHP_FE(sybase_fetch_row,                        arginfo_sybase_fetch_row)
        PHP_FE(sybase_fetch_array,                      arginfo_sybase_fetch_array)
        PHP_FE(sybase_fetch_assoc,                      arginfo_sybase_fetch_assoc)
        PHP_FE(sybase_fetch_object,                     arginfo_sybase_fetch_object)
        PHP_FE(sybase_data_seek,                        arginfo_sybase_data_seek)
        PHP_FE(sybase_fetch_field,                      arginfo_sybase_fetch_field)
        PHP_FE(sybase_field_seek,                       arginfo_sybase_field_seek)
        PHP_FE(sybase_result,                           arginfo_sybase_result)
        PHP_FE(sybase_affected_rows,            arginfo_sybase_affected_rows)
        PHP_FE(sybase_min_client_severity,      arginfo_sybase_min_client_severity)
        PHP_FE(sybase_min_server_severity,      arginfo_sybase_min_server_severity)
        PHP_FE(sybase_set_message_handler,      arginfo_sybase_set_message_handler)
        PHP_FE(sybase_deadlock_retry_count, arginfo_sybase_deadlock_retry_count)

#if !defined(PHP_WIN32) && !defined(HAVE_MSSQL)
        PHP_FALIAS(mssql_connect,       sybase_connect,         arginfo_sybase_connect)
        PHP_FALIAS(mssql_pconnect,      sybase_pconnect,        arginfo_sybase_pconnect)
        PHP_FALIAS(mssql_close,         sybase_close,           arginfo_sybase_close)
        PHP_FALIAS(mssql_select_db, sybase_select_db,   arginfo_sybase_select_db)
        PHP_FALIAS(mssql_query,         sybase_query,           arginfo_sybase_query)
        PHP_FALIAS(mssql_unbuffered_query,      sybase_unbuffered_query,        arginfo_sybase_unbuffered_query)
        PHP_FALIAS(mssql_free_result,           sybase_free_result,             arginfo_sybase_free_result)
        PHP_FALIAS(mssql_get_last_message,      sybase_get_last_message,        arginfo_sybase_get_last_message)
        PHP_FALIAS(mssql_num_rows,              sybase_num_rows,                arginfo_sybase_num_rows)
        PHP_FALIAS(mssql_num_fields,    sybase_num_fields,              arginfo_sybase_num_fields)
        PHP_FALIAS(mssql_fetch_row,     sybase_fetch_row,               arginfo_sybase_fetch_row)
        PHP_FALIAS(mssql_fetch_array,   sybase_fetch_array,     arginfo_sybase_fetch_array)
        PHP_FALIAS(mssql_fetch_assoc,   sybase_fetch_assoc,     arginfo_sybase_fetch_assoc)
        PHP_FALIAS(mssql_fetch_object,  sybase_fetch_object,    arginfo_sybase_fetch_object)
        PHP_FALIAS(mssql_data_seek,     sybase_data_seek,               arginfo_sybase_data_seek)
        PHP_FALIAS(mssql_fetch_field,   sybase_fetch_field,     arginfo_sybase_fetch_field)
        PHP_FALIAS(mssql_field_seek,    sybase_field_seek,              arginfo_sybase_field_seek)
        PHP_FALIAS(mssql_result,                sybase_result,                  arginfo_sybase_result)
        PHP_FALIAS(mssql_affected_rows, sybase_affected_rows,   arginfo_sybase_affected_rows)
        PHP_FALIAS(mssql_min_client_severity,   sybase_min_client_severity,     arginfo_sybase_min_client_severity)
        PHP_FALIAS(mssql_min_server_severity,   sybase_min_server_severity,     arginfo_sybase_min_server_severity)
        PHP_FALIAS(mssql_set_message_handler,   sybase_set_message_handler,     arginfo_sybase_set_message_handler)
        PHP_FALIAS(mssql_deadlock_retry_count,  sybase_deadlock_retry_count,    arginfo_sybase_deadlock_retry_count)
#endif
        PHP_FE_END
};

zend_module_entry sybase_module_entry = {
        STANDARD_MODULE_HEADER,
        "sybase_ct",
        sybase_functions,
        PHP_MINIT(sybase),
        PHP_MSHUTDOWN(sybase),
        PHP_RINIT(sybase),
        PHP_RSHUTDOWN(sybase),
        PHP_MINFO(sybase),
        NO_VERSION_YET,
        PHP_MODULE_GLOBALS(sybase),
        PHP_GINIT(sybase),
        PHP_GSHUTDOWN(sybase),
        NULL,
        STANDARD_MODULE_PROPERTIES_EX
};

/* static CS_CONTEXT *context; */

#ifdef COMPILE_DL_SYBASE_CT
ZEND_GET_MODULE(sybase)
#endif

ZEND_DECLARE_MODULE_GLOBALS(sybase)

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


static int _clean_invalid_results(zend_rsrc_list_entry *le TSRMLS_DC)
{
        if (Z_TYPE_P(le) == le_result) {
                sybase_link *sybase_ptr = ((sybase_result *) le->ptr)->sybase_ptr;

                if (!sybase_ptr->valid) {
                        return 1;
                }
        }
        return 0;
}

#define efree_n(x)  { efree(x); x = NULL; }
#define efree_if(x) if (x) efree_n(x)

#ifdef PHP_SYBASE_DEBUG
#define FREE_SYBASE_RESULT(result)                                                            \
        if (result) {                                                                             \
            fprintf(stderr, "_free_sybase_result(%p) called from line #%d\n", result, __LINE__);  \
                fflush(stderr);                                                                       \
                _free_sybase_result(result);                                                          \
                result = NULL;                                                                        \
        }
#else
#define FREE_SYBASE_RESULT(result)                                                            \
        if (result) {                                                                             \
                _free_sybase_result(result);                                                          \
                result = NULL;                                                                        \
        }
#endif
static void _free_sybase_result(sybase_result *result)
{
        int i, j;

        if (result->data) {
                for (i = 0; i < (result->store ? result->num_rows : MIN(1, result->num_rows)); i++) {
                        for (j=0; j<result->num_fields; j++) {
                                zval_dtor(&result->data[i][j]);
                        }
                        efree(result->data[i]);
                }
                efree(result->data);
        }

        if (result->fields) {
                for (i=0; i<result->num_fields; i++) {
                        STR_FREE(result->fields[i].name);
                        STR_FREE(result->fields[i].column_source);
                }
                efree(result->fields);
        }

        if (result->tmp_buffer) {
                for (i=0; i<result->num_fields; i++) {
                        efree(result->tmp_buffer[i]);
                }
                efree(result->tmp_buffer);
        }

        efree_if(result->lengths);
        efree_if(result->indicators);
        efree_if(result->datafmt);
        efree_if(result->numerics);
        efree_if(result->types);

        efree(result);
}

/* Forward declaration */
static int php_sybase_finish_results (sybase_result *result TSRMLS_DC);

static void php_free_sybase_result(zend_rsrc_list_entry *rsrc TSRMLS_DC)
{
        sybase_result *result = (sybase_result *)rsrc->ptr;

        /* Check to see if we've read all rows */
        if (result->sybase_ptr && result->sybase_ptr->active_result_index) {
                if (result->sybase_ptr->cmd) {
                        ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_ALL);
                }
                php_sybase_finish_results(result TSRMLS_CC);
        }

        FREE_SYBASE_RESULT(result);
}

static void _close_sybase_link(zend_rsrc_list_entry *rsrc TSRMLS_DC)
{
        sybase_link *sybase_ptr = (sybase_link *)rsrc->ptr;
        CS_INT con_status;

        sybase_ptr->valid = 0;
        if (sybase_ptr->callback_name != NULL) {
                zval_ptr_dtor(&sybase_ptr->callback_name);
                sybase_ptr->callback_name= NULL;
        }
        zend_hash_apply(&EG(regular_list), (apply_func_t) _clean_invalid_results TSRMLS_CC);

        /* Non-persistent connections will always be connected or we wouldn't
         * get here, but since we want to check the death status anyway
         * we might as well double-check the connect status.
         */
        if (ct_con_props(sybase_ptr->connection, CS_GET, CS_CON_STATUS,
                                         &con_status, CS_UNUSED, NULL)!=CS_SUCCEED) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to get connection status on close");
                /* Assume the worst. */
                con_status = CS_CONSTAT_CONNECTED | CS_CONSTAT_DEAD;
        }
        if (con_status & CS_CONSTAT_CONNECTED) {
                if ((con_status & CS_CONSTAT_DEAD) || ct_close(sybase_ptr->connection, CS_UNUSED)!=CS_SUCCEED) {
                        ct_close(sybase_ptr->connection, CS_FORCE_CLOSE);
                }
        }

        ct_cmd_drop(sybase_ptr->cmd);
        ct_con_drop(sybase_ptr->connection);
        efree(sybase_ptr);
        SybCtG(num_links)--;
}


static void _close_sybase_plink(zend_rsrc_list_entry *rsrc TSRMLS_DC)
{
        sybase_link *sybase_ptr = (sybase_link *)rsrc->ptr;
        CS_INT con_status;

        /* Persistent connections may have been closed before a failed
         * reopen attempt.
         */
        if (ct_con_props(sybase_ptr->connection, CS_GET, CS_CON_STATUS,
                                         &con_status, CS_UNUSED, NULL)!=CS_SUCCEED) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to get connection status on close");
                /* Assume the worst. */
                con_status = CS_CONSTAT_CONNECTED | CS_CONSTAT_DEAD;
        }
        if (con_status & CS_CONSTAT_CONNECTED) {
                if ((con_status & CS_CONSTAT_DEAD) || ct_close(sybase_ptr->connection, CS_UNUSED)!=CS_SUCCEED) {
                        ct_close(sybase_ptr->connection, CS_FORCE_CLOSE);
                }
        }

        ct_con_drop(sybase_ptr->connection);
        free(sybase_ptr);
        SybCtG(num_persistent)--;
        SybCtG(num_links)--;
}


static CS_RETCODE CS_PUBLIC _client_message_handler(CS_CONTEXT *context, CS_CONNECTION *connection, CS_CLIENTMSG *errmsg)
{
        TSRMLS_FETCH();

        if (CS_SEVERITY(errmsg->msgnumber) >= SybCtG(min_client_severity)) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Client message:  %s (severity %ld)", errmsg->msgstring, (long)CS_SEVERITY(errmsg->msgnumber));
        }
        STR_FREE(SybCtG(server_message));
        SybCtG(server_message) = estrdup(errmsg->msgstring);


        /* If this is a timeout message, return CS_FAIL to cancel the
         * operation and mark the connection as dead.
         */
        if (CS_SEVERITY(errmsg->msgnumber) == CS_SV_RETRY_FAIL &&
                CS_NUMBER(errmsg->msgnumber) == 63 &&
                CS_ORIGIN(errmsg->msgnumber) == 2 &&
                CS_LAYER(errmsg->msgnumber) == 1)
        {
                return CS_FAIL;
        }

        return CS_SUCCEED;
}

static int _call_message_handler(zval *callback_name, CS_SERVERMSG *srvmsg TSRMLS_DC)
{
        int handled = 0;
        zval *msgnumber, *severity, *state, *line, *text, *retval = NULL;
        zval **args[5];

        /* Border case - empty fcall */
        if (NULL == callback_name) return 0;

        /* Build arguments */
        MAKE_STD_ZVAL(msgnumber);
        ZVAL_LONG(msgnumber, srvmsg->msgnumber);
        args[0] = &msgnumber;

        MAKE_STD_ZVAL(severity);
        ZVAL_LONG(severity, srvmsg->severity);
        args[1] = &severity;

        MAKE_STD_ZVAL(state);
        ZVAL_LONG(state, srvmsg->state);
        args[2] = &state;

        MAKE_STD_ZVAL(line);
        ZVAL_LONG(line, srvmsg->line);
        args[3] = &line;

        MAKE_STD_ZVAL(text);    
        ZVAL_STRING(text, srvmsg->text, 1);
        args[4] = &text;

        if (call_user_function_ex(EG(function_table), NULL, callback_name, &retval, 5, args, 0, NULL TSRMLS_CC) == FAILURE) {
                zval expr_copy;
                int use_copy;

                zend_make_printable_zval(callback_name, &expr_copy, &use_copy);
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Cannot call the messagehandler %s", Z_STRVAL(expr_copy));
                zval_dtor(&expr_copy);
        }

        if (retval) {
                handled = ((Z_TYPE_P(retval) != IS_BOOL) || (Z_BVAL_P(retval) != 0));
                zval_ptr_dtor(&retval);
        } else {
                handled = 0;
        }

        zval_ptr_dtor(&msgnumber);
        zval_ptr_dtor(&severity);
        zval_ptr_dtor(&state);
        zval_ptr_dtor(&line);
        zval_ptr_dtor(&text);

        return handled;
}

static CS_RETCODE CS_PUBLIC _server_message_handler(CS_CONTEXT *context, CS_CONNECTION *connection, CS_SERVERMSG *srvmsg)
{
        sybase_link *sybase;
        int handled = 0;
        TSRMLS_FETCH();

        /* Remember the last server message in any case */
        STR_FREE(SybCtG(server_message));
        SybCtG(server_message) = estrdup(srvmsg->text);

        /* Retrieve sybase link */
        if (ct_con_props(connection, CS_GET, CS_USERDATA, &sybase, CS_SIZEOF(sybase), NULL) != CS_SUCCEED) {
                sybase = NULL;
        }

        /* If this is a deadlock message, set the connection's deadlock flag
         * so we will retry the request.  Sorry about the bare constant here,
         * but it's not defined anywhere and it's a "well-known" number.
         */
        if (sybase && (srvmsg->msgnumber == 1205)) {
                sybase->deadlock = 1;
        }

        /* Check mininum server severity level */
        if (srvmsg->severity < SybCtG(min_server_severity)) {
                return CS_SUCCEED;
        }

        /* Call global message handler */
        handled = handled | _call_message_handler(SybCtG(callback_name), srvmsg TSRMLS_CC);

        /* Call link specific message handler */
        if (sybase) {
                handled = handled | _call_message_handler(sybase->callback_name, srvmsg TSRMLS_CC);
        }

        /* Spit out a warning if neither of them has handled this message */
        if (!handled) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Server message:  %s (severity %ld, procedure %s)",
                                srvmsg->text, (long)srvmsg->severity, ((srvmsg->proclen>0) ? srvmsg->proc : "N/A"));
        }

        return CS_SUCCEED;
}


PHP_INI_BEGIN()
        STD_PHP_INI_BOOLEAN("sybct.allow_persistent", "1", PHP_INI_SYSTEM, OnUpdateLong, allow_persistent, zend_sybase_globals, sybase_globals)
        STD_PHP_INI_ENTRY_EX("sybct.max_persistent", "-1", PHP_INI_SYSTEM, OnUpdateLong, max_persistent, zend_sybase_globals, sybase_globals, display_link_numbers)
        STD_PHP_INI_ENTRY_EX("sybct.max_links", "-1", PHP_INI_SYSTEM, OnUpdateLong, max_links, zend_sybase_globals, sybase_globals, display_link_numbers)
        STD_PHP_INI_ENTRY("sybct.min_server_severity", "10", PHP_INI_ALL, OnUpdateLong, min_server_severity, zend_sybase_globals, sybase_globals)
        STD_PHP_INI_ENTRY("sybct.min_client_severity", "10", PHP_INI_ALL, OnUpdateLong, min_client_severity, zend_sybase_globals, sybase_globals)
        STD_PHP_INI_ENTRY("sybct.login_timeout", "-1", PHP_INI_ALL, OnUpdateLong, login_timeout, zend_sybase_globals, sybase_globals)
        STD_PHP_INI_ENTRY("sybct.hostname", NULL, PHP_INI_ALL, OnUpdateString, hostname, zend_sybase_globals, sybase_globals)
        STD_PHP_INI_ENTRY_EX("sybct.deadlock_retry_count", "0", PHP_INI_ALL, OnUpdateLong, deadlock_retry_count, zend_sybase_globals, sybase_globals, display_link_numbers)
PHP_INI_END()


static PHP_GINIT_FUNCTION(sybase)
{
        long opt;

        if (cs_ctx_alloc(CTLIB_VERSION, &sybase_globals->context)!=CS_SUCCEED || ct_init(sybase_globals->context, CTLIB_VERSION)!=CS_SUCCEED) {
                return;
        }

        /* Initialize message handlers */
        if (ct_callback(sybase_globals->context, NULL, CS_SET, CS_SERVERMSG_CB, (CS_VOID *)_server_message_handler)!=CS_SUCCEED) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to set server message handler");
        }

        if (ct_callback(sybase_globals->context, NULL, CS_SET, CS_CLIENTMSG_CB, (CS_VOID *)_client_message_handler)!=CS_SUCCEED) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to set client message handler");
        }

        /* Set datetime conversion format to "Nov  3 1998  8:06PM".
         * This is the default format for the ct-lib that comes with
         * Sybase ASE 11.5.1 for Solaris, but the Linux libraries that
         * come with 11.0.3.3 default to "03/11/98" which is singularly
         * useless.  This levels the playing field for all platforms.
         */
        {
                CS_INT dt_convfmt = CS_DATES_SHORT;
                if (cs_dt_info(sybase_globals->context, CS_SET, NULL, CS_DT_CONVFMT, CS_UNUSED, &dt_convfmt, sizeof(dt_convfmt), NULL)!=CS_SUCCEED) {
                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to set datetime conversion format");
                }
        }

        /* Set the timeout, which is per context and can't be set with 
         * ct_con_props(), so set it globally from the config value if 
         * requested.  The default is CS_NO_LIMIT.
         * 
         * Note that despite some noise in the documentation about using
         * signals to implement timeouts, they are actually implemented
         * by using poll() or select() on Solaris and Linux.
         */
        if (cfg_get_long("sybct.timeout", &opt)==SUCCESS) {
                CS_INT cs_timeout = opt;
                if (ct_config(sybase_globals->context, CS_SET, CS_TIMEOUT, &cs_timeout, CS_UNUSED, NULL)!=CS_SUCCEED) {
                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to update the timeout");
                }
        }

        sybase_globals->num_persistent=0;
        sybase_globals->callback_name = NULL;
}


static PHP_GSHUTDOWN_FUNCTION(sybase)
{
        ct_exit(sybase_globals->context, CS_UNUSED);
        cs_ctx_drop(sybase_globals->context);
}

PHP_MINIT_FUNCTION(sybase)
{
        REGISTER_INI_ENTRIES();

        le_link = zend_register_list_destructors_ex(_close_sybase_link, NULL, "sybase-ct link", module_number);
        le_plink = zend_register_list_destructors_ex(NULL, _close_sybase_plink, "sybase-ct link persistent", module_number);
        le_result = zend_register_list_destructors_ex(php_free_sybase_result, NULL, "sybase-ct result", module_number);

        return SUCCESS;
}



PHP_RINIT_FUNCTION(sybase)
{
        SybCtG(default_link)=-1;
        SybCtG(num_links) = SybCtG(num_persistent);
        SybCtG(appname) = estrndup("PHP " PHP_VERSION, sizeof("PHP " PHP_VERSION));
        SybCtG(server_message) = STR_EMPTY_ALLOC();
        return SUCCESS;
}



PHP_MSHUTDOWN_FUNCTION(sybase)
{
        UNREGISTER_INI_ENTRIES();
#if 0
        ct_exit(context, CS_UNUSED);
        cs_ctx_drop(context);
#endif
        return SUCCESS;
}


PHP_RSHUTDOWN_FUNCTION(sybase)
{
        efree(SybCtG(appname));
        SybCtG(appname) = NULL;
        if (SybCtG(callback_name)) {
                zval_ptr_dtor(&SybCtG(callback_name));
                SybCtG(callback_name)= NULL;
        }
        STR_FREE(SybCtG(server_message));
        SybCtG(server_message) = NULL;
        return SUCCESS;
}


static int php_sybase_do_connect_internal(sybase_link *sybase, char *host, char *user, char *passwd, char *charset, char *appname TSRMLS_DC)
{
        CS_LOCALE *tmp_locale;
        long packetsize;

        /* set a CS_CONNECTION record */
        if (ct_con_alloc(SybCtG(context), &sybase->connection)!=CS_SUCCEED) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to allocate connection record");
                return 0;
        }

        /* Note - this saves a copy of sybase, not a pointer to it. */
        if (ct_con_props(sybase->connection, CS_SET, CS_USERDATA, &sybase, CS_SIZEOF(sybase), NULL)!=CS_SUCCEED) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to set userdata");
                ct_con_drop(sybase->connection);
                return 0;
        }

        if (user) {
                ct_con_props(sybase->connection, CS_SET, CS_USERNAME, user, CS_NULLTERM, NULL);
        }
        if (passwd) {
                ct_con_props(sybase->connection, CS_SET, CS_PASSWORD, passwd, CS_NULLTERM, NULL);
        }
        if (appname) {
                ct_con_props(sybase->connection, CS_SET, CS_APPNAME, appname, CS_NULLTERM, NULL);
        } else { 
                ct_con_props(sybase->connection, CS_SET, CS_APPNAME, SybCtG(appname), CS_NULLTERM, NULL);
        }

        if (SybCtG(hostname)) {
                ct_con_props(sybase->connection, CS_SET, CS_HOSTNAME, SybCtG(hostname), CS_NULLTERM, NULL);
        }

        if (charset) {
                if (cs_loc_alloc(SybCtG(context), &tmp_locale)!=CS_SUCCEED) {
                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase: Unable to allocate locale information");
                } else {
                        if (cs_locale(SybCtG(context), CS_SET, tmp_locale, CS_LC_ALL, NULL, CS_NULLTERM, NULL)!=CS_SUCCEED) {
                                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase: Unable to load default locale data");
                        } else {
                                if (cs_locale(SybCtG(context), CS_SET, tmp_locale, CS_SYB_CHARSET, charset, CS_NULLTERM, NULL)!=CS_SUCCEED) {
                                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase: Unable to update character set");
                                } else {
                                        if (ct_con_props(sybase->connection, CS_SET, CS_LOC_PROP, tmp_locale, CS_UNUSED, NULL)!=CS_SUCCEED) {
                                                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase: Unable to update connection properties");
                                        }
                                }
                        }
                }
        }
        
        if (cfg_get_long("sybct.packet_size", &packetsize) == SUCCESS) {
                if (ct_con_props(sybase->connection, CS_SET, CS_PACKETSIZE, (CS_VOID *)&packetsize, CS_UNUSED, NULL) != CS_SUCCEED) {
                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase: Unable to update connection packetsize");
                }
        }

        /* Set the login timeout. Actually, the login timeout is per context
         * and not per connection, but we will update the context here to 
         * allow for code such as the following:
         * 
         *   ini_set('sybct.login_timeout', $timeout);
         *   sybase_connect(...)
         * 
         * Note that preceding calls to sybase_connect() will now use the 
         * updated value and not the default one!
         * 
         * The default value for CS_LOGIN_TIMEOUT is 60 (1 minute).
         */
        if (SybCtG(login_timeout) != -1) {
                CS_INT cs_login_timeout = SybCtG(login_timeout);
                if (ct_config(SybCtG(context), CS_SET, CS_LOGIN_TIMEOUT, &cs_login_timeout, CS_UNUSED, NULL)!=CS_SUCCEED) {
                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to update the login timeout");
                }
        }

        sybase->valid = 1;
        sybase->dead = 0;
        sybase->active_result_index = 0;
        sybase->callback_name = NULL;

        /* create the link */
        if (ct_connect(sybase->connection, host, CS_NULLTERM)!=CS_SUCCEED) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to connect");
                ct_con_drop(sybase->connection);
                return 0;
        }

        if (ct_cmd_alloc(sybase->connection, &sybase->cmd)!=CS_SUCCEED) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to allocate command record");
                ct_close(sybase->connection, CS_UNUSED);
                ct_con_drop(sybase->connection);
                return 0;
        }

        return 1;
}


static void php_sybase_do_connect(INTERNAL_FUNCTION_PARAMETERS, int persistent)
{
        char *user = NULL, *passwd = NULL, *host = NULL, *charset = NULL, *appname = NULL;
        char *hashed_details;
        int hashed_details_length, len;
        zend_bool new = 0;
        sybase_link *sybase_ptr;

        host= user= passwd= charset= appname= NULL;
        if (persistent) {
                if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s!s!s!s!s!", &host, &len, &user, &len, &passwd, &len, &charset, &len, &appname, &len) == FAILURE) {
                        return;
                }
        } else {
                if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s!s!s!s!s!b", &host, &len, &user, &len, &passwd, &len, &charset, &len, &appname, &len, &new) == FAILURE) {
                        return;
                }
        }
        hashed_details_length = spprintf(
                &hashed_details, 
                0, 
                "sybase_%s_%s_%s_%s_%s",
                host ? host : "", 
                user ? user : "", 
                passwd ? passwd : "", 
                charset ? charset : "", 
                appname ? appname : ""
        );

        if (!SybCtG(allow_persistent)) {
                persistent=0;
        }
        if (persistent) {
                zend_rsrc_list_entry *le;

                /* try to find if we already have this link in our persistent list */
                if (zend_hash_find(&EG(persistent_list), hashed_details, hashed_details_length+1, (void **) &le)==FAILURE) {  /* we don't */
                        zend_rsrc_list_entry new_le;

                        if (SybCtG(max_links)!=-1 && SybCtG(num_links)>=SybCtG(max_links)) {
                                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Too many open links (%ld)", SybCtG(num_links));
                                efree(hashed_details);
                                RETURN_FALSE;
                        }
                        if (SybCtG(max_persistent)!=-1 && SybCtG(num_persistent)>=SybCtG(max_persistent)) {
                                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Too many open persistent links (%ld)", SybCtG(num_persistent));
                                efree(hashed_details);
                                RETURN_FALSE;
                        }

                        sybase_ptr = (sybase_link *) malloc(sizeof(sybase_link));
                        if (!sybase_ptr) {
                                efree(hashed_details);
                                RETURN_FALSE;
                        }
                        if (!php_sybase_do_connect_internal(sybase_ptr, host, user, passwd, charset, appname TSRMLS_CC)) {
                                free(sybase_ptr);
                                efree(hashed_details);
                                RETURN_FALSE;
                        }

                        /* hash it up */
                        Z_TYPE(new_le) = le_plink;
                        new_le.ptr = sybase_ptr;
                        if (zend_hash_update(&EG(persistent_list), hashed_details, hashed_details_length+1, (void *) &new_le, sizeof(zend_rsrc_list_entry), NULL)==FAILURE) {
                                ct_close(sybase_ptr->connection, CS_UNUSED);
                                ct_con_drop(sybase_ptr->connection);
                                free(sybase_ptr);
                                efree(hashed_details);
                                RETURN_FALSE;
                        }
                        SybCtG(num_persistent)++;
                        SybCtG(num_links)++;
                } else {  /* we do */
                        CS_INT con_status;

                        if (Z_TYPE_P(le) != le_plink) {
                                efree(hashed_details);
                                RETURN_FALSE;
                        }

                        sybase_ptr = (sybase_link *) le->ptr;

                        /* If the link has died, close it and overwrite it with a new one. */

                        if (ct_con_props(sybase_ptr->connection, CS_GET, CS_CON_STATUS,
                                                         &con_status, CS_UNUSED, NULL)!=CS_SUCCEED) {
                                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to get connection status");
                                efree(hashed_details);
                                RETURN_FALSE;
                        }
                        if (!(con_status & CS_CONSTAT_CONNECTED) || (con_status & CS_CONSTAT_DEAD) || sybase_ptr->dead) {
                                sybase_link sybase;

                                if (con_status & CS_CONSTAT_CONNECTED) {
                                        ct_close(sybase_ptr->connection, CS_FORCE_CLOSE);
                                }
                                /* Create a new connection, then replace the old
                                 * connection.  If we fail to create a new connection,
                                 * put the old one back so there will be a connection,
                                 * even if it is a non-functional one.  This is because
                                 * code may still be holding an id for this connection
                                 * so we can't free the CS_CONNECTION.
                                 * (This is actually totally hokey, it would be better
                                 * to just ct_con_drop() the connection and set
                                 * sybase_ptr->connection to NULL, then test it for
                                 * NULL before trying to use it elsewhere . . .)
                                 */
                                memcpy(&sybase, sybase_ptr, sizeof(sybase_link));
                                if (!php_sybase_do_connect_internal(sybase_ptr, host, user, passwd, charset, appname TSRMLS_CC)) {
                                        memcpy(sybase_ptr, &sybase, sizeof(sybase_link));
                                        efree(hashed_details);
                                        RETURN_FALSE;
                                }
                                ct_con_drop(sybase.connection); /* drop old connection */
                        }
                }
                ZEND_REGISTER_RESOURCE(return_value, sybase_ptr, le_plink);
        } else { /* non persistent */
                zend_rsrc_list_entry *index_ptr, new_index_ptr;

                /* first we check the hash for the hashed_details key.  if it exists,
                 * it should point us to the right offset where the actual sybase link sits.
                 * if it doesn't, open a new sybase link, add it to the resource list,
                 * and add a pointer to it with hashed_details as the key.
                 */
                if (!new && zend_hash_find(&EG(regular_list), hashed_details, hashed_details_length+1, (void **) &index_ptr)==SUCCESS) {
                        int type, link;
                        void *ptr;

                        if (Z_TYPE_P(index_ptr) != le_index_ptr) {
                                efree(hashed_details);
                                RETURN_FALSE;
                        }
                        link = (int) index_ptr->ptr;
                        ptr = zend_list_find(link, &type);   /* check if the link is still there */
                        if (ptr && (type==le_link || type==le_plink)) {
                                zend_list_addref(link);
                                Z_LVAL_P(return_value) = SybCtG(default_link) = link;
                                Z_TYPE_P(return_value) = IS_RESOURCE;
                                efree(hashed_details);
                                return;
                        } else {
                                zend_hash_del(&EG(regular_list), hashed_details, hashed_details_length+1);
                        }
                }
                if (SybCtG(max_links)!=-1 && SybCtG(num_links)>=SybCtG(max_links)) {
                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Too many open links (%ld)", SybCtG(num_links));
                        efree(hashed_details);
                        RETURN_FALSE;
                }

                sybase_ptr = (sybase_link *) emalloc(sizeof(sybase_link));
                if (!php_sybase_do_connect_internal(sybase_ptr, host, user, passwd, charset, appname TSRMLS_CC)) {
                        efree(sybase_ptr);
                        efree(hashed_details);
                        RETURN_FALSE;
                }

                /* add it to the list */
                ZEND_REGISTER_RESOURCE(return_value, sybase_ptr, le_link);

                /* add it to the hash */
                new_index_ptr.ptr = (void *) Z_LVAL_P(return_value);
                Z_TYPE(new_index_ptr) = le_index_ptr;
                if (zend_hash_update(&EG(regular_list), hashed_details, hashed_details_length+1, (void *) &new_index_ptr, sizeof(zend_rsrc_list_entry), NULL)==FAILURE) {
                        ct_close(sybase_ptr->connection, CS_UNUSED);
                        ct_con_drop(sybase_ptr->connection);
                        efree(sybase_ptr);
                        efree(hashed_details);
                        RETURN_FALSE;
                }
                SybCtG(num_links)++;
        }
        efree(hashed_details);
        SybCtG(default_link)=Z_LVAL_P(return_value);
        zend_list_addref(SybCtG(default_link));
}


static int php_sybase_get_default_link(INTERNAL_FUNCTION_PARAMETERS)
{
        if (SybCtG(default_link)==-1) { /* no link opened yet, implicitly open one */
                ht = 0;
                php_sybase_do_connect(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
        }
        return SybCtG(default_link);
}


/* {{{ proto int sybase_connect([string host [, string user [, string password [, string charset [, string appname [, bool new]]]]]])
   Open Sybase server connection */
PHP_FUNCTION(sybase_connect)
{
        php_sybase_do_connect(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}

/* }}} */

/* {{{ proto int sybase_pconnect([string host [, string user [, string password [, string charset [, string appname]]]]])
   Open persistent Sybase connection */
PHP_FUNCTION(sybase_pconnect)
{
        php_sybase_do_connect(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}

/* }}} */

inline static int php_sybase_connection_id(zval *sybase_link_index, int *id TSRMLS_DC)
{
        if (NULL == sybase_link_index) {
                if (-1 == SybCtG(default_link)) {
                        return FAILURE;
                }
                *id = SybCtG(default_link);
        } else {
                *id = -1;   /* explicit resource number */
        }
        return SUCCESS;
}

/* {{{ proto bool sybase_close([resource link_id])
   Close Sybase connection */
PHP_FUNCTION(sybase_close)
{
        zval *sybase_link_index = NULL;
        sybase_link *sybase_ptr;
        int id;

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

        if (php_sybase_connection_id(sybase_link_index, &id TSRMLS_CC) == FAILURE) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  No connection to close");
                RETURN_FALSE;
        }

        ZEND_FETCH_RESOURCE2(sybase_ptr, sybase_link *, &sybase_link_index, id, "Sybase-Link", le_link, le_plink);

        if (id == -1) {
                zend_list_delete(Z_RESVAL_P(sybase_link_index));
        }
        if (id != -1 || (sybase_link_index && Z_RESVAL_P(sybase_link_index) == SybCtG(default_link))) {
                zend_list_delete(SybCtG(default_link));
                SybCtG(default_link) = -1;
        }

        RETURN_TRUE;
}

/* }}} */


static int exec_cmd(sybase_link *sybase_ptr, char *cmdbuf)
{
        CS_RETCODE retcode;
        CS_INT restype;
        int failure=0;

        /* Fail if we already marked this connection dead. */

        if (sybase_ptr->dead) {
                return FAILURE;
        }

        /*
         ** Get a command handle, store the command string in it, and
         ** send it to the server.
         */

        if (ct_command(sybase_ptr->cmd, CS_LANG_CMD, cmdbuf, CS_NULLTERM, CS_UNUSED)!=CS_SUCCEED) {
                sybase_ptr->dead = 1;
                return FAILURE;
        }
        if (ct_send(sybase_ptr->cmd)!=CS_SUCCEED) {
                sybase_ptr->dead = 1;
                return FAILURE;
        }

        while ((retcode = ct_results(sybase_ptr->cmd, &restype))==CS_SUCCEED) {
                switch ((int) restype) {
                        case CS_CMD_SUCCEED:
                        case CS_CMD_DONE:
                                break;

                        case CS_CMD_FAIL:
                                failure=1;
                                break;

                        case CS_STATUS_RESULT:
                                ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_CURRENT);
                                break;

                        default:
                                failure=1;
                                break;
                }
                if (failure) {
                        ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
                        return FAILURE;
                }
        }

        switch (retcode) {
                case CS_END_RESULTS:
                        return SUCCESS;
                        break;

                case CS_FAIL:
                        /* Hopefully this either cleans up the connection, or the
                         * connection ends up marked dead so it will be reopened
                         * if it is persistent.  We may want to do
                         * ct_close(CS_FORCE_CLOSE) if ct_cancel() fails; see the
                         * doc for ct_results()==CS_FAIL.
                         */
                        ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
                        /* Don't take chances with the vagaries of ct-lib.  Mark it
                         * dead ourselves.
                         */
                        sybase_ptr->dead = 1;
                        return FAILURE;

                default:
                        return FAILURE;
        }
}


/* {{{ proto bool sybase_select_db(string database [, resource link_id])
   Select Sybase database */
PHP_FUNCTION(sybase_select_db)
{
        zval *sybase_link_index = NULL;
        char *db, *cmdbuf;
        int id, len;
        sybase_link *sybase_ptr;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|r", &db, &len, &sybase_link_index) == FAILURE) {
                return;
        }

        if (php_sybase_connection_id(sybase_link_index, &id TSRMLS_CC) == FAILURE) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  No connection");
                RETURN_FALSE;
        }

        ZEND_FETCH_RESOURCE2(sybase_ptr, sybase_link *, &sybase_link_index, id, "Sybase-Link", le_link, le_plink);

        spprintf(&cmdbuf, 4 + len + 1, "use %s", db);
        if (exec_cmd(sybase_ptr, cmdbuf) == FAILURE) {
                efree(cmdbuf);
                RETURN_FALSE;
        } else {
                efree(cmdbuf);
                RETURN_TRUE;
        }
}

/* }}} */

static int php_sybase_finish_results(sybase_result *result TSRMLS_DC) 
{
        int i, fail;
        CS_RETCODE retcode;
        CS_INT restype;
        
        efree_n(result->datafmt);
        efree_n(result->lengths);
        efree_n(result->indicators);
        efree_n(result->numerics);
        efree_n(result->types);
        for (i=0; i<result->num_fields; i++) {
                efree(result->tmp_buffer[i]);
        }
        efree_n(result->tmp_buffer);

        /* Indicate we have read all rows */
        result->sybase_ptr->active_result_index= 0;

        /* The only restype we should get now is CS_CMD_DONE, possibly
         * followed by a CS_STATUS_RESULT/CS_CMD_SUCCEED/CS_CMD_DONE
         * sequence if the command was a stored procedure call.  But we
         * still need to read and discard unexpected results.  We might
         * want to return a failure in this case because the application
         * won't be getting all the results it asked for.
         */
        fail = 0;
        while ((retcode = ct_results(result->sybase_ptr->cmd, &restype))==CS_SUCCEED) {
                switch ((int) restype) {
                        case CS_CMD_SUCCEED:
                        case CS_CMD_DONE:
                                break;

                        case CS_CMD_FAIL:
                                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Command failed, canceling rest");
                                ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_ALL);
                                fail = 1;
                                break;

                        case CS_COMPUTE_RESULT:
                        case CS_CURSOR_RESULT:
                        case CS_PARAM_RESULT:
                        case CS_ROW_RESULT:
                                /* Unexpected results, cancel them. */
                                php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Sybase:  Unexpected results, canceling current");
                                ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_CURRENT);
                                break;

                        case CS_STATUS_RESULT:
                                /* Status result from a stored procedure, cancel it but do not tell user */
                                ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_CURRENT);
                                break;

                        default:
                                php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Sybase:  Unexpected results, canceling all");
                                ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_ALL);
                                break;
                }

                if (fail) {
                        break;
                }
        }

        switch (retcode) {
                case CS_END_RESULTS:
                        /* Normal. */
                        break;

                case CS_FAIL:
                        /* Hopefully this either cleans up the connection, or the
                         * connection ends up marked dead so it will be reopened
                         * if it is persistent.  We may want to do
                         * ct_close(CS_FORCE_CLOSE) if ct_cancel() fails; see the
                         * doc for ct_results()==CS_FAIL.
                         */
                        ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_ALL);
                        /* Don't take chances with the vagaries of ct-lib.  Mark it
                         * dead ourselves.
                         */
                        result->sybase_ptr->dead = 1;
                        
                case CS_CANCELED:
                default:
                        retcode = CS_FAIL;
                        break;
        }

        return retcode;
}

#define RETURN_DOUBLE_VAL(result, buf, length)          \
        if ((length - 1) <= EG(precision)) {                \
                errno = 0;                                      \
                Z_DVAL(result) = zend_strtod(buf, NULL);        \
                if (errno != ERANGE) {                          \
                        Z_TYPE(result) = IS_DOUBLE;                 \
                } else {                                        \
                        ZVAL_STRINGL(&result, buf, length- 1, 1);   \
                }                                               \
        } else {                                            \
                ZVAL_STRINGL(&result, buf, length- 1, 1);       \
        }

static int php_sybase_fetch_result_row(sybase_result *result, int numrows TSRMLS_DC)
{
        int i, j;
        CS_INT retcode;
        
        /* We've already fetched everything */
        if (result->last_retcode == CS_END_DATA || result->last_retcode == CS_END_RESULTS) {
                return result->last_retcode;
        }
        
        if (numrows!=-1) numrows+= result->num_rows;
        while ((retcode=ct_fetch(result->sybase_ptr->cmd, CS_UNUSED, CS_UNUSED, CS_UNUSED, NULL))==CS_SUCCEED || retcode == CS_ROW_FAIL) {
                result->num_rows++;
                i= result->store ? result->num_rows- 1 : 0;
                if (i >= result->blocks_initialized*SYBASE_ROWS_BLOCK) {
                        result->data = (zval **) safe_erealloc(result->data, SYBASE_ROWS_BLOCK*(++result->blocks_initialized), sizeof(zval *), 0);
                }
                if (result->store || 1 == result->num_rows) {
                        result->data[i] = (zval *) safe_emalloc(sizeof(zval), result->num_fields, 0);
                }

                for (j = 0; j < result->num_fields; j++) {

                        /* If we are in non-storing mode, free the previous result */
                        if (!result->store && result->num_rows > 1 && Z_TYPE(result->data[i][j]) == IS_STRING) {
                                efree(Z_STRVAL(result->data[i][j]));
                        }

                        if (result->indicators[j] == -1) { /* null value */
                                ZVAL_NULL(&result->data[i][j]);
                        } else {
                                switch (result->numerics[j]) {
                                        case 1: {
                                                /* This indicates a long */
                                                ZVAL_LONG(&result->data[i][j], strtol(result->tmp_buffer[j], NULL, 10));
                                                break;
                                        }
                                        
                                        case 2: {
                                                /* This indicates a float */
                                                RETURN_DOUBLE_VAL(result->data[i][j], result->tmp_buffer[j], result->lengths[j]); 
                                                break;
                                        }

                                        case 3: {
                                                /* This indicates either a long or a float, which ever fits */
                                                errno = 0;
                                                Z_LVAL(result->data[i][j]) = strtol(result->tmp_buffer[j], NULL, 10);
                                                if (errno == ERANGE) {
                                                
                                                        /* An overflow occurred, so try to fit it into a double */
                                                        RETURN_DOUBLE_VAL(result->data[i][j], result->tmp_buffer[j], result->lengths[j]); 
                                                        break;
                                                }
                                                Z_TYPE(result->data[i][j]) = IS_LONG;
                                                break;
                                        }
                                        
                                        default: {
                                                /* This indicates anything else, return it as string
                                                 * FreeTDS doesn't correctly set result->indicators[j] correctly
                                                 * for NULL fields in some version in conjunction with ASE 12.5
                                                 * but instead sets result->lengths[j] to 0, which would lead to
                                                 * a negative memory allocation (and thus a segfault).
                                                 */
                                                if (result->lengths[j] < 1) {
                                                        ZVAL_NULL(&result->data[i][j]);
                                                } else {
                                                        ZVAL_STRINGL(&result->data[i][j], result->tmp_buffer[j], result->lengths[j]- 1, 1);
                                                }
                                                break;
                                        }
                                }
                        }
                }
                if (numrows!=-1 && result->num_rows>=numrows) break;
        }

        if (retcode==CS_ROW_FAIL) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Error reading row %d", result->num_rows);
                return retcode;
        }
        result->last_retcode= retcode;
        switch (retcode) {
                case CS_END_DATA:
                        retcode = php_sybase_finish_results(result TSRMLS_CC);
                        break;
                        
                case CS_ROW_FAIL:
                case CS_SUCCEED:
                        break;
                        
                default:
                        FREE_SYBASE_RESULT(result);
                        result = NULL;
                        retcode = CS_FAIL;              /* Just to be sure */
                        break;
        }
        
        return retcode;
}

static sybase_result * php_sybase_fetch_result_set(sybase_link *sybase_ptr, int buffered, int store TSRMLS_DC)
{
        int num_fields;
        sybase_result *result;
        int i, j;
        CS_INT retcode;

        /* The following (if unbuffered) is more or less the equivalent of mysql_store_result().
         * fetch all rows from the server into the row buffer, thus:
         * 1)  Being able to fire up another query without explicitly reading all rows
         * 2)  Having numrows accessible
         */
        if (ct_res_info(sybase_ptr->cmd, CS_NUMDATA, &num_fields, CS_UNUSED, NULL)!=CS_SUCCEED) {
                return NULL;
        }
        
        result = (sybase_result *) emalloc(sizeof(sybase_result));
        result->data = (zval **) safe_emalloc(sizeof(zval *), SYBASE_ROWS_BLOCK, 0);
        result->fields = NULL;
        result->sybase_ptr = sybase_ptr;
        result->cur_field=result->cur_row=result->num_rows=0;
        result->num_fields = num_fields;
        result->last_retcode = 0;
        result->store= store;
        result->blocks_initialized= 1;
        result->tmp_buffer = (char **) safe_emalloc(sizeof(char *), num_fields, 0);
        result->lengths = (CS_INT *) safe_emalloc(sizeof(CS_INT), num_fields, 0);
        result->indicators = (CS_SMALLINT *) safe_emalloc(sizeof(CS_INT), num_fields, 0);
        result->datafmt = (CS_DATAFMT *) safe_emalloc(sizeof(CS_DATAFMT), num_fields, 0);
        result->numerics = (unsigned char *) safe_emalloc(sizeof(unsigned char), num_fields, 0);
        result->types = (CS_INT *) safe_emalloc(sizeof(CS_INT), num_fields, 0);
        
        for (i=0; i<num_fields; i++) {
                ct_describe(sybase_ptr->cmd, i+1, &result->datafmt[i]);
                result->types[i] = result->datafmt[i].datatype;
                switch (result->datafmt[i].datatype) {
                        case CS_CHAR_TYPE:
                        case CS_VARCHAR_TYPE:
                        case CS_TEXT_TYPE:
                        case CS_IMAGE_TYPE:
                                result->datafmt[i].maxlength++;
                                result->numerics[i] = 0;
                                break;
                        case CS_BINARY_TYPE:
                        case CS_VARBINARY_TYPE:
                                result->datafmt[i].maxlength *= 2;
                                result->datafmt[i].maxlength++;
                                result->numerics[i] = 0;
                                break;
                        case CS_BIT_TYPE:
                        case CS_TINYINT_TYPE:
                                result->datafmt[i].maxlength = 4;
                                result->numerics[i] = 1;
                                break;
                        case CS_SMALLINT_TYPE:
                                result->datafmt[i].maxlength = 7;
                                result->numerics[i] = 1;
                                break;
                        case CS_INT_TYPE:
                                result->datafmt[i].maxlength = 12;
                                result->numerics[i] = 1;
                                break;
                        case CS_REAL_TYPE:
                        case CS_FLOAT_TYPE:
                                result->datafmt[i].maxlength = 24;
                                result->numerics[i] = 2;
                                break;
                        case CS_MONEY_TYPE:
                        case CS_MONEY4_TYPE:
                                result->datafmt[i].maxlength = 24;
                                result->numerics[i] = 2;
                                break;
                        case CS_DATETIME_TYPE:
                        case CS_DATETIME4_TYPE:
                                result->datafmt[i].maxlength = 30;
                                result->numerics[i] = 0;
                                break;
                        case CS_NUMERIC_TYPE:
                        case CS_DECIMAL_TYPE:
                                result->datafmt[i].maxlength = result->datafmt[i].precision + 3;
                                /* numeric(10) vs numeric(10, 1) */
                                result->numerics[i] = (result->datafmt[i].scale == 0) ? 3 : 2;
                                break;
                        default:
                                result->datafmt[i].maxlength++;
                                result->numerics[i] = 0;
                                break;
                }
                result->tmp_buffer[i] = (char *)emalloc(result->datafmt[i].maxlength);
                result->datafmt[i].datatype = CS_CHAR_TYPE;
                result->datafmt[i].format = CS_FMT_NULLTERM;
                ct_bind(sybase_ptr->cmd, i+1, &result->datafmt[i], result->tmp_buffer[i], &result->lengths[i], &result->indicators[i]);
        }

        result->fields = (sybase_field *) safe_emalloc(sizeof(sybase_field), num_fields, 0);
        j=0;
        for (i=0; i<num_fields; i++) {
                char computed_buf[16];

                if (result->datafmt[i].namelen>0) {
                        result->fields[i].name = estrndup(result->datafmt[i].name, result->datafmt[i].namelen);
                } else {
                        if (j>0) {
                                snprintf(computed_buf, 16, "computed%d", j);
                        } else {
                                strcpy(computed_buf, "computed");
                        }
                        result->fields[i].name = estrdup(computed_buf);
                        j++;
                }
                result->fields[i].column_source = STR_EMPTY_ALLOC();
                result->fields[i].max_length = result->datafmt[i].maxlength-1;
                result->fields[i].numeric = result->numerics[i];
                Z_TYPE(result->fields[i]) = result->types[i];
        }
        
        if (buffered) {
                retcode = CS_SUCCEED;
        } else {
                if ((retcode = php_sybase_fetch_result_row(result, -1 TSRMLS_CC)) == CS_FAIL) {
                        return NULL;
                }
        }

        result->last_retcode = retcode;
        return result;
}

static void php_sybase_query (INTERNAL_FUNCTION_PARAMETERS, int buffered)
{
        zval *sybase_link_index = NULL;
        zend_bool store = 1;
        char *query;
        int len, id, deadlock_count;
        sybase_link *sybase_ptr;
        sybase_result *result;
        CS_INT restype;
        CS_RETCODE retcode;
        enum {
                Q_RESULT,                               /* Success with results. */
                Q_SUCCESS,                              /* Success but no results. */
                Q_FAILURE,                              /* Failure, no results. */
        } status;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|rb", &query, &len, &sybase_link_index, &store) == FAILURE) {
                return;
        }

        if (!store && !buffered) {
                php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Sybase:  Cannot use non-storing mode with buffered queries");
                store = 1;
        }

        if (php_sybase_connection_id(sybase_link_index, &id TSRMLS_CC) == FAILURE) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  No connection");
                RETURN_FALSE;
        }

        ZEND_FETCH_RESOURCE2(sybase_ptr, sybase_link *, &sybase_link_index, id, "Sybase-Link", le_link, le_plink);

        /* Fail if we already marked this connection dead. */
        if (sybase_ptr->dead) {
                RETURN_FALSE;
        }
        
        /* Check to see if a previous sybase_unbuffered_query has read all rows */
        if (sybase_ptr->active_result_index) {
                zval *tmp = NULL;
                
                php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Sybase:  Called without first fetching all rows from a previous unbuffered query");
                if (sybase_ptr->cmd) {
                        ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
                }
                
                /* Get the resultset and free it */
                ALLOC_ZVAL(tmp);
                Z_LVAL_P(tmp)= sybase_ptr->active_result_index;
                Z_TYPE_P(tmp)= IS_RESOURCE;
                INIT_PZVAL(tmp);
                ZEND_FETCH_RESOURCE(result, sybase_result *, &tmp, -1, "Sybase result", le_result);
                
                if (result) {
                        php_sybase_finish_results(result TSRMLS_CC);
                }
                
                zval_ptr_dtor(&tmp);
                zend_list_delete(sybase_ptr->active_result_index);
                sybase_ptr->active_result_index= 0;
        }

        /* Repeat until we don't deadlock. */
        deadlock_count= 0;
        for (;;) {
                result = NULL;
                sybase_ptr->deadlock = 0;
                sybase_ptr->affected_rows = 0;

                /* On Solaris 11.5, ct_command() can be moved outside the
                 * loop, but not on Linux 11.0.
                 */
                if (ct_command(sybase_ptr->cmd, CS_LANG_CMD, query, CS_NULLTERM, CS_UNUSED)!=CS_SUCCEED) {
                        /* If this didn't work, the connection is screwed but
                         * ct-lib might not set CS_CONSTAT_DEAD.  So set our own
                         * flag.  This happens sometimes when the database is restarted
                         * and/or its machine is rebooted, and ct_command() returns
                         * CS_BUSY for some reason.
                         */
                        sybase_ptr->dead = 1;
                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Connection is dead");
                        RETURN_FALSE;
                }

                if (ct_send(sybase_ptr->cmd)!=CS_SUCCEED) {
                        ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
                        sybase_ptr->dead = 1;
                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Cannot send command");
                        RETURN_FALSE;
                }

                /* Use the first result set or succeed/fail status and discard the
                 * others.  Applications really shouldn't be making calls that
                 * return multiple result sets, but if they do then we need to
                 * properly read or cancel them or the connection will become
                 * unusable.
                 */
                if (ct_results(sybase_ptr->cmd, &restype)!=CS_SUCCEED) {
                        ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
                        sybase_ptr->dead = 1;
                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Cannot read results");
                        RETURN_FALSE;
                }
                switch ((int) restype) {
                        case CS_CMD_FAIL:
                        default:
                                status = Q_FAILURE;
                                break;
                        case CS_CMD_SUCCEED:
                        case CS_CMD_DONE: {
                                        CS_INT row_count;
                                        if (ct_res_info(sybase_ptr->cmd, CS_ROW_COUNT, &row_count, CS_UNUSED, NULL)==CS_SUCCEED) {
                                                sybase_ptr->affected_rows = (long)row_count;
                                        }
                                }
                                /* Fall through */
                        case CS_COMPUTEFMT_RESULT:
                        case CS_ROWFMT_RESULT:
                        case CS_DESCRIBE_RESULT:
                        case CS_MSG_RESULT:
                                buffered= 0;                            /* These queries have no need for buffering */
                                status = Q_SUCCESS;
                                break;
                        case CS_COMPUTE_RESULT:
                        case CS_CURSOR_RESULT:
                        case CS_PARAM_RESULT:
                        case CS_ROW_RESULT:
                        case CS_STATUS_RESULT:
                                result = php_sybase_fetch_result_set(sybase_ptr, buffered, store TSRMLS_CC);
                                if (result == NULL) {
                                        ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
                                        RETURN_FALSE;
                                }
                                status = Q_RESULT;
                                break;
                }
                
                /* Check for left-over results */
                if (!buffered && status != Q_RESULT) {
                        while ((retcode = ct_results(sybase_ptr->cmd, &restype))==CS_SUCCEED) {
                                switch ((int) restype) {
                                        case CS_CMD_SUCCEED:
                                        case CS_CMD_DONE:
                                                break;

                                        case CS_CMD_FAIL:
                                                status = Q_FAILURE;
                                                break;

                                        case CS_COMPUTE_RESULT:
                                        case CS_CURSOR_RESULT:
                                        case CS_PARAM_RESULT:
                                        case CS_ROW_RESULT:
                                                if (status != Q_RESULT) {
                                                        result = php_sybase_fetch_result_set(sybase_ptr, buffered, store TSRMLS_CC);
                                                        if (result == NULL) {
                                                                ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
                                                                sybase_ptr->dead = 1;
                                                                RETURN_FALSE;
                                                        }
                                                        status = Q_RESULT;
                                                        retcode = result->last_retcode; 
                                                } else {
                                                        /* Unexpected results, cancel them. */
                                                        ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_CURRENT);
                                                }
                                                break;
                                        case CS_STATUS_RESULT:
                                                /* Unexpected results, cancel them. */
                                                ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_CURRENT);
                                                break;

                                        default:
                                                status = Q_FAILURE;
                                                break;
                                }
                                if (status == Q_FAILURE) {
                                        ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
                                }
                                if (retcode == CS_END_RESULTS) {
                                        break;
                                }
                        }
                        switch (retcode) {
                                case CS_END_RESULTS:
                                        /* Normal. */
                                        break;

                                case CS_FAIL:
                                        /* Hopefully this either cleans up the connection, or the
                                         * connection ends up marked dead so it will be reopened
                                         * if it is persistent.  We may want to do
                                         * ct_close(CS_FORCE_CLOSE) if ct_cancel() fails; see the
                                         * doc for ct_results()==CS_FAIL.
                                         */
                                        ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
                                        /* Don't take chances with the vagaries of ct-lib.  Mark it
                                         * dead ourselves.
                                         */
                                        sybase_ptr->dead = 1;
                                case CS_CANCELED:
                                default:
                                        status = Q_FAILURE;
                                        break;
                        }
                }

                /* Retry deadlocks up until deadlock_retry_count times */               
                if (sybase_ptr->deadlock && SybCtG(deadlock_retry_count) != -1 && ++deadlock_count > SybCtG(deadlock_retry_count)) {
                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Retried deadlock %d times [max: %ld], giving up", deadlock_count- 1, SybCtG(deadlock_retry_count));
                        FREE_SYBASE_RESULT(result);
                        break;
                }

                /* If query completed without deadlock, break out of the loop.
                 * Sometimes deadlock results in failures and sometimes not,
                 * it seems to depend on the server flavor.  But we want to
                 * retry all deadlocks.
                 */
                if (sybase_ptr->dead || sybase_ptr->deadlock == 0) {
                        break;
                }

                /* Get rid of any results we may have fetched.  This happens:
                 * e.g., our result set may be a stored procedure status which
                 * is returned even if the stored procedure deadlocks.  As an
                 * optimization, we could try not to fetch results in known
                 * deadlock conditions, but deadlock is (should be) rare.
                 */
                FREE_SYBASE_RESULT(result);
        }

        if (status == Q_SUCCESS) {
                RETURN_TRUE;
        }

        if (status == Q_FAILURE) {
                FREE_SYBASE_RESULT(result);
                RETURN_FALSE;
        }

        /* Indicate we have data in case of buffered queries */
        id= ZEND_REGISTER_RESOURCE(return_value, result, le_result);
        sybase_ptr->active_result_index= buffered ? id : 0;
}

/* {{{ proto int sybase_query(string query [, resource link_id])
   Send Sybase query */
PHP_FUNCTION(sybase_query)
{
        php_sybase_query(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */

/* {{{ proto int sybase_unbuffered_query(string query [, resource link_id])
   Send Sybase query */
PHP_FUNCTION(sybase_unbuffered_query)
{
        php_sybase_query(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}

/* {{{ proto bool sybase_free_result(resource result)
   Free result memory */
PHP_FUNCTION(sybase_free_result)
{
        zval *sybase_result_index = NULL;
        sybase_result *result;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &sybase_result_index) == FAILURE) {
                return;
        }
        ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
        
        /* Did we fetch up until the end? */
        if (result->last_retcode != CS_END_DATA && result->last_retcode != CS_END_RESULTS) {
                /* php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  canceling the rest of the results"); */
                ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_ALL);
                php_sybase_finish_results(result TSRMLS_CC);
        }
        
        zend_list_delete(Z_LVAL_P(sybase_result_index));
        RETURN_TRUE;
}

/* }}} */

/* {{{ proto string sybase_get_last_message(void)
   Returns the last message from server (over min_message_severity) */
PHP_FUNCTION(sybase_get_last_message)
{
        RETURN_STRING(SybCtG(server_message), 1);
}
/* }}} */

/* {{{ proto int sybase_num_rows(resource result)
   Get number of rows in result */
PHP_FUNCTION(sybase_num_rows)
{
        zval *sybase_result_index = NULL;
        sybase_result *result;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &sybase_result_index) == FAILURE) {
                return;
        }
        ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);

        Z_LVAL_P(return_value) = result->num_rows;
        Z_TYPE_P(return_value) = IS_LONG;
}

/* }}} */

/* {{{ proto int sybase_num_fields(resource result)
   Get number of fields in result */
PHP_FUNCTION(sybase_num_fields)
{
        zval *sybase_result_index = NULL;
        sybase_result *result;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &sybase_result_index) == FAILURE) {
                return;
        }
        ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);

        Z_LVAL_P(return_value) = result->num_fields;
        Z_TYPE_P(return_value) = IS_LONG;
}

/* }}} */

/* {{{ proto array sybase_fetch_row(resource result)
   Get row as enumerated array */
PHP_FUNCTION(sybase_fetch_row)
{
        zval *sybase_result_index = NULL;
        int i;
        sybase_result *result;
        zval *field_content;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &sybase_result_index) == FAILURE) {
                return;
        }
        ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);

        /* Unbuffered? */
        if (result->last_retcode != CS_END_DATA && result->last_retcode != CS_END_RESULTS) {
                php_sybase_fetch_result_row(result, 1 TSRMLS_CC);
        }
        
        /* At the end? */
        if (result->cur_row >= result->num_rows) {
                RETURN_FALSE;
        }

        array_init(return_value);
        for (i=0; i<result->num_fields; i++) {
                ALLOC_ZVAL(field_content);
                *field_content = result->data[result->store ? result->cur_row : 0][i];
                INIT_PZVAL(field_content);
                zval_copy_ctor(field_content);
                zend_hash_index_update(Z_ARRVAL_P(return_value), i, (void *) &field_content, sizeof(zval* ), NULL);
        }
        result->cur_row++;
}

/* }}} */

static void php_sybase_fetch_hash(INTERNAL_FUNCTION_PARAMETERS, int numerics)
{
        zval *sybase_result_index = NULL;
        sybase_result *result;
        int i, j;
        zval *tmp;
        char name[32];

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &sybase_result_index) == FAILURE) {
                return;
        }
        ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);

        /* Unbuffered ? Fetch next row */
        if (result->last_retcode != CS_END_DATA && result->last_retcode != CS_END_RESULTS) {
                php_sybase_fetch_result_row(result, 1 TSRMLS_CC);
        }

        /* At the end? */
        if (result->cur_row >= result->num_rows) {
                RETURN_FALSE;
        }

        array_init(return_value);
        
        j= 1;
        for (i=0; i<result->num_fields; i++) {
                ALLOC_ZVAL(tmp);
                *tmp = result->data[result->store ? result->cur_row : 0][i];
                INIT_PZVAL(tmp);
                zval_copy_ctor(tmp);
                if (numerics) {
                        zend_hash_index_update(Z_ARRVAL_P(return_value), i, (void *) &tmp, sizeof(zval *), NULL);
                        Z_ADDREF_P(tmp);
                }
                
                if (zend_hash_exists(Z_ARRVAL_P(return_value), result->fields[i].name, strlen(result->fields[i].name)+1)) {
                        snprintf(name, 32, "%s%d", result->fields[i].name, j);
                        result->fields[i].name= estrdup(name);
                        j++;
                }
                zend_hash_update(Z_ARRVAL_P(return_value), result->fields[i].name, strlen(result->fields[i].name)+1, (void *) &tmp, sizeof(zval *), NULL);
        }
        result->cur_row++;
}


/* {{{ proto object sybase_fetch_object(resource result [, mixed object])
   Fetch row as object */
PHP_FUNCTION(sybase_fetch_object)
{
        zval *object = NULL;
        zval *sybase_result_index = NULL;
        zend_class_entry *ce = NULL;
        sybase_result *result;
        
        /* Was a second parameter given? */
        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r|z", &sybase_result_index, &object) == FAILURE) {
                return;
        }
        ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);

        ce = ZEND_STANDARD_CLASS_DEF_PTR;
        if (NULL != object) {           
                switch (Z_TYPE_P(object)) {
                        case IS_OBJECT: {
                                ce = Z_OBJCE_P(object);
                                break;
                        }

                        case IS_NULL: {
                                /* Use default (ZEND_STANDARD_CLASS_DEF_PTR) */
                                break;
                        }

                        default: {
                                zend_class_entry **pce = NULL;
                                convert_to_string(object);

                                if (zend_lookup_class(Z_STRVAL_P(object), Z_STRLEN_P(object), &pce TSRMLS_CC) == FAILURE) {
                                        php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Sybase:  Class %s has not been declared", Z_STRVAL_P(object));
                                        /* Use default (ZEND_STANDARD_CLASS_DEF_PTR) */
                                } else {
                                        ce = *pce;
                                }
                        }
                }
        }

        /* Reset no. of arguments to 1 so that we can use INTERNAL_FUNCTION_PARAM_PASSTHRU */
        ht= 1;
        php_sybase_fetch_hash(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
        if (Z_TYPE_P(return_value) == IS_ARRAY) {
                object_and_properties_init(return_value, ce, Z_ARRVAL_P(return_value));
        }
}
/* }}} */

/* {{{ proto array sybase_fetch_array(resource result)
   Fetch row as array */
PHP_FUNCTION(sybase_fetch_array)
{
        php_sybase_fetch_hash(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
/* }}} */

/* {{{ proto array sybase_fetch_assoc(resource result)
   Fetch row as array without numberic indices */
PHP_FUNCTION(sybase_fetch_assoc)
{
        php_sybase_fetch_hash(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */

/* {{{ proto bool sybase_data_seek(resource result, int offset)
   Move internal row pointer */
PHP_FUNCTION(sybase_data_seek)
{
        zval *sybase_result_index = NULL;
        long offset;
        sybase_result *result;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rl", &sybase_result_index, &offset) == FAILURE) {
                return;
        }
        ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);

        /* Unbuffered ? */
        if (result->last_retcode != CS_END_DATA && result->last_retcode != CS_END_RESULTS && offset >= result->num_rows) {
                php_sybase_fetch_result_row(result, offset+ 1 TSRMLS_CC);
        }
        
        if (offset < 0 || offset >= result->num_rows) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Bad row offset %ld, must be betweem 0 and %d", offset, result->num_rows - 1);
                RETURN_FALSE;
        }

        result->cur_row = offset;
        RETURN_TRUE;
}
/* }}} */

static char *php_sybase_get_field_name(CS_INT type)
{
        switch (type) {
                case CS_CHAR_TYPE:
                case CS_VARCHAR_TYPE:
                case CS_TEXT_TYPE:
                        return "string";
                        break;
                case CS_IMAGE_TYPE:
                        return "image";
                        break;
                case CS_BINARY_TYPE:
                case CS_VARBINARY_TYPE:
                        return "blob";
                        break;
                case CS_BIT_TYPE:
                        return "bit";
                        break;
                case CS_TINYINT_TYPE:
                case CS_SMALLINT_TYPE:
                case CS_INT_TYPE:
                        return "int";
                        break;
                case CS_REAL_TYPE:
                case CS_FLOAT_TYPE:
                case CS_NUMERIC_TYPE:
                case CS_DECIMAL_TYPE:
                        return "real";
                        break;
                case CS_MONEY_TYPE:
                case CS_MONEY4_TYPE:
                        return "money";
                        break;
                case CS_DATETIME_TYPE:
                case CS_DATETIME4_TYPE:
                        return "datetime";
                        break;
                default:
                        return "unknown";
                        break;
        }
}


/* {{{ proto object sybase_fetch_field(resource result [, int offset])
   Get field information */
PHP_FUNCTION(sybase_fetch_field)
{
        zval *sybase_result_index = NULL;
        long field_offset = -1;
        sybase_result *result;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r|l", &sybase_result_index, &field_offset) == FAILURE) {
                return;
        }
        ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);

        if (field_offset == -1) {
                field_offset = result->cur_field;
                result->cur_field++;
        }

        if (field_offset < 0 || field_offset >= result->num_fields) {
                if (ZEND_NUM_ARGS() == 2) { /* field specified explicitly */
                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Bad column offset");
                }
                RETURN_FALSE;
        }

        object_init(return_value);

        add_property_string(return_value, "name", result->fields[field_offset].name, 1);
        add_property_long(return_value, "max_length", result->fields[field_offset].max_length);
        add_property_string(return_value, "column_source", result->fields[field_offset].column_source, 1);
        add_property_long(return_value, "numeric", result->fields[field_offset].numeric);
        add_property_string(return_value, "type", php_sybase_get_field_name(Z_TYPE(result->fields[field_offset])), 1);
}
/* }}} */


/* {{{ proto bool sybase_field_seek(resource result, int offset)
   Set field offset */
PHP_FUNCTION(sybase_field_seek)
{
        zval *sybase_result_index = NULL;
        long field_offset;
        sybase_result *result;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rl", &sybase_result_index, &field_offset) == FAILURE) {
                return;
        }
        ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);

        if (field_offset < 0 || field_offset >= result->num_fields) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Bad column offset");
                RETURN_FALSE;
        }

        result->cur_field = field_offset;
        RETURN_TRUE;
}
/* }}} */


/* {{{ proto string sybase_result(resource result, int row, mixed field)
   Get result data */
PHP_FUNCTION(sybase_result)
{
        zval *field;
        zval *sybase_result_index = NULL;
        long row;
        int field_offset = 0;
        sybase_result *result;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rlz", &sybase_result_index, &row, &field) == FAILURE) {
                return;
        }
        ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
        
        /* Unbuffered ? */
        if (result->last_retcode != CS_END_DATA && result->last_retcode != CS_END_RESULTS && row >= result->num_rows) {
                php_sybase_fetch_result_row(result, row TSRMLS_CC);
        }

        if (row < 0 || row >= result->num_rows) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Bad row offset (%ld)", row);
                RETURN_FALSE;
        }

        switch(Z_TYPE_P(field)) {
                case IS_STRING: {
                        int i;

                        for (i = 0; i < result->num_fields; i++) {
                                if (strcasecmp(result->fields[i].name, Z_STRVAL_P(field)) == 0) {
                                        field_offset = i;
                                        break;
                                }
                        }
                        if (i >= result->num_fields) { /* no match found */
                                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  %s field not found in result", Z_STRVAL_P(field));
                                RETURN_FALSE;
                        }
                        break;
                }
                default:
                        convert_to_long(field);
                        field_offset = Z_LVAL_P(field);
                        if (field_offset < 0 || field_offset >= result->num_fields) {
                                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Bad column offset specified");
                                RETURN_FALSE;
                        }
                        break;
        }

        *return_value = result->data[row][field_offset];
        zval_copy_ctor(return_value);
}
/* }}} */


/* {{{ proto int sybase_affected_rows([resource link_id])
   Get number of affected rows in last query */
PHP_FUNCTION(sybase_affected_rows)
{
        zval *sybase_link_index = NULL;
        sybase_link *sybase_ptr;
        int id;

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

        if (php_sybase_connection_id(sybase_link_index, &id TSRMLS_CC) == FAILURE) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  No connection");
                RETURN_FALSE;
        }

        ZEND_FETCH_RESOURCE2(sybase_ptr, sybase_link *, &sybase_link_index, id, "Sybase-Link", le_link, le_plink);

        Z_LVAL_P(return_value) = sybase_ptr->affected_rows;
        Z_TYPE_P(return_value) = IS_LONG;
}
/* }}} */


PHP_MINFO_FUNCTION(sybase)
{
        char buf[32];

        php_info_print_table_start();
        php_info_print_table_header(2, "Sybase_CT Support", "enabled" );
        snprintf(buf, sizeof(buf), "%ld", SybCtG(num_persistent));
        php_info_print_table_row(2, "Active Persistent Links", buf);
        snprintf(buf, sizeof(buf), "%ld", SybCtG(num_links));
        php_info_print_table_row(2, "Active Links", buf);
        snprintf(buf, sizeof(buf), "%ld", SybCtG(min_server_severity));
        php_info_print_table_row(2, "Min server severity", buf);
        snprintf(buf, sizeof(buf), "%ld", SybCtG(min_client_severity));
        php_info_print_table_row(2, "Min client severity", buf);        
        php_info_print_table_row(2, "Application Name", SybCtG(appname));
        snprintf(buf, sizeof(buf), "%ld", SybCtG(deadlock_retry_count));
        php_info_print_table_row(2, "Deadlock retry count", buf);
        php_info_print_table_end();

        DISPLAY_INI_ENTRIES();
}


/* {{{ proto void sybase_min_client_severity(int severity)
   Sets minimum client severity */
PHP_FUNCTION(sybase_min_client_severity)
{
        long severity;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &severity) == FAILURE) {
                return;
        }
        
        SybCtG(min_client_severity) = severity;
}
/* }}} */


/* {{{ proto void sybase_min_server_severity(int severity)
   Sets minimum server severity */
PHP_FUNCTION(sybase_min_server_severity)
{
        long severity;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &severity) == FAILURE) {
                return;
        }
        
        SybCtG(min_server_severity) = severity;
}
/* }}} */

/* {{{ proto void sybase_deadlock_retry_count(int retry_count)
   Sets deadlock retry count */
PHP_FUNCTION(sybase_deadlock_retry_count)
{
        long retry_count;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &retry_count) == FAILURE) {
                return;
        }
        
        SybCtG(deadlock_retry_count) = retry_count;
}
/* }}} */


/* {{{ proto bool sybase_set_message_handler(mixed error_func [, resource connection])
   Set the error handler, to be called when a server message is raised. 
   If error_func is NULL the handler will be deleted */
PHP_FUNCTION(sybase_set_message_handler)
{
        zend_fcall_info fci = empty_fcall_info;
        zend_fcall_info_cache cache = empty_fcall_info_cache;
        zval *sybase_link_index= NULL;
        sybase_link *sybase_ptr;
        zval **callback;
        int id;

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "f!|r", &fci, &cache, &sybase_link_index) == FAILURE) {
                return;
        }

        if (php_sybase_connection_id(sybase_link_index, &id TSRMLS_CC) == FAILURE) {

                /* Doesn't matter if we're not connected yet, use default */
                callback= &SybCtG(callback_name);
        } else if (-1 == id) {

                /* Connection-based message handler */
                ZEND_FETCH_RESOURCE2(sybase_ptr, sybase_link *, &sybase_link_index, id, "Sybase-Link", le_link, le_plink);
                callback= &sybase_ptr->callback_name;
        } else {

                /* Default message handler */
                callback= &SybCtG(callback_name);
        }

        /* Clean old callback */
        if (*callback) {
                zval_ptr_dtor(callback);
                *callback = NULL;
        }

        if (ZEND_FCI_INITIALIZED(fci)) {
                ALLOC_ZVAL(*callback);
                **callback = *fci.function_name;
                INIT_PZVAL(*callback);
                zval_copy_ctor(*callback);
        } else {
                callback= NULL;
        }

        RETURN_TRUE;
}
/* }}} */


#endif

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 */

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