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Nuke bogus BLOB ids 

# User-space BLOB id no longer contains transaction handle, so BLOB ids
# now remain valid throughout multiple transactions.
# Oh, and they look better too :-)
PEAR_1_4DEV
Ard Biesheuvel 23 years ago
parent
744dd20520
commit
f96efcbf90
2 changed files with 145 additions and 110 deletions
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  1. 244
      ext/interbase/interbase.c
  2. 11
      ext/interbase/php_interbase.h

244
ext/interbase/interbase.c
View File

@ -51,6 +51,9 @@
#define SAFE_STRING(s) ((s)?(s):"")
#define BLOB_ID_LEN 18
#define BLOB_ID_MASK "0x%08lx%08lx"
/* {{{ extension definition structures */
function_entry ibase_functions[] = {
PHP_FE(ibase_connect, NULL)
@ -264,24 +267,6 @@ typedef struct {
short sqlind;
} BIND_BUF;
/* get blob identifier from argument
* on empty unset argument ib_blob set to NULL
*/
static int _php_ibase_get_blob_id(zval **blob_arg, ibase_blob_handle **ib_blob)
{
if (Z_TYPE_PP(blob_arg) == IS_STRING && Z_STRLEN_PP(blob_arg) == 0) {
*ib_blob = NULL;
} else if (Z_TYPE_PP(blob_arg) != IS_STRING
|| Z_STRLEN_PP(blob_arg) != sizeof(ibase_blob_handle)
|| ((ibase_blob_handle *)(Z_STRVAL_PP(blob_arg)))->bl_handle != 0) {
_php_ibase_module_error("Invalid blob id");
return FAILURE;
} else {
*ib_blob = (ibase_blob_handle *)Z_STRVAL_PP(blob_arg);
}
return SUCCESS;
}
/* get blob handle from argument
* note: blob already open when handle active
@ -582,7 +567,6 @@ static void _php_ibase_free_event(zend_rsrc_list_entry *rsrc TSRMLS_DC)
}
_php_ibase_event_free(event->event_buffer,event->result_buffer);
}
/* }}} */
/* {{{ startup, shutdown and info functions */
@ -664,6 +648,8 @@ PHP_RINIT_FUNCTION(ibase)
RESET_ERRMSG;
zend_hash_init(&IBG(blob_table), 0, NULL, NULL, 0);
return SUCCESS;
}
@ -690,6 +676,8 @@ PHP_RSHUTDOWN_FUNCTION(ibase)
}
IBG(timeformat) = NULL;
zend_hash_destroy(&IBG(blob_table));
return SUCCESS;
}
@ -864,15 +852,15 @@ static void _php_ibase_connect(INTERNAL_FUNCTION_PARAMETERS, int persistent)
int open_new_connection = 1;
if (zend_hash_find(&EG(persistent_list), hashed_details, hashed_details_length + 1, (void **) &le) != FAILURE) {
char tmp_1[] = {isc_info_base_level, isc_info_end};
char tmp_2[8]; /* Enough? Hope so... */
static char info[] = {isc_info_base_level, isc_info_end};
char result[8]; /* Enough? Hope so... */
if (Z_TYPE_P(le) != le_plink) {
RETURN_FALSE;
}
/* Check if connection has timed out */
ib_link = (ibase_db_link *) le->ptr;
if (!isc_database_info(IB_STATUS, &ib_link->handle, sizeof(tmp_1), tmp_1, sizeof(tmp_2), tmp_2)) {
if (!isc_database_info(IB_STATUS, &ib_link->handle, sizeof(info), info, sizeof(result), result)) {
open_new_connection = 0;
}
}
@ -1027,6 +1015,7 @@ PHP_FUNCTION(ibase_close)
}
ZEND_FETCH_RESOURCE2(ib_link, ibase_db_link *, link_arg, link_id, "InterBase link", le_link, le_plink);
zend_hash_clean(&IBG(blob_table)); /* TODO only remove entries that belong to closed link */
zend_list_delete(link_id);
RETURN_TRUE;
}
@ -1072,6 +1061,7 @@ PHP_FUNCTION(ibase_drop_db)
}
zend_list_delete(link_id);
zend_hash_clean(&IBG(blob_table)); /* TODO only remove entries that belong to closed link */
RETURN_TRUE;
}
/* }}} */
@ -1172,7 +1162,8 @@ static int _php_ibase_alloc_array(ibase_array **ib_arrayp, int *array_cntp, XSQL
static int _php_ibase_alloc_query(ibase_query **ib_queryp, ibase_db_link *link, ibase_trans *trans, char *query, unsigned short dialect, int trans_res_id TSRMLS_DC)
{
#define IB_QUERY (*ib_queryp)
char info_type[] = {isc_info_sql_stmt_type}, result[8];
static char info_type[] = {isc_info_sql_stmt_type};
char result[8];
IB_QUERY = emalloc(sizeof(ibase_query));
IB_QUERY->link = link;
@ -1462,33 +1453,38 @@ static int _php_ibase_bind(XSQLDA *sqlda, zval **b_vars, BIND_BUF *buf, ibase_qu
#endif
break;
case SQL_BLOB:
if (Z_TYPE_P(b_var) != IS_STRING || Z_STRLEN_P(b_var) != sizeof(ibase_blob_handle) ||
((ibase_blob_handle *)(Z_STRVAL_P(b_var)))->bl_handle != 0) {
ibase_blob_handle ib_blob;
ib_blob.trans_handle = ib_query->trans->handle;
ib_blob.link = ib_query->link->handle;
ib_blob.bl_handle = NULL;
if (isc_create_blob(IB_STATUS, &ib_blob.link, &ib_blob.trans_handle, &ib_blob.bl_handle, &ib_blob.bl_qd)) {
_php_ibase_error(TSRMLS_C);
return FAILURE;
}
{
ibase_blob_handle *blob;
convert_to_string(b_var);
if (_php_ibase_blob_add(&b_var, &ib_blob TSRMLS_CC) != SUCCESS) {
return FAILURE;
}
if (Z_STRLEN_P(b_var) != BLOB_ID_LEN ||
zend_hash_find(&IBG(blob_table),Z_STRVAL_P(b_var),Z_STRLEN_P(b_var),(void **) &blob) != SUCCESS) {
ibase_blob_handle ib_blob;
ib_blob.link = ib_query->link;
ib_blob.bl_handle = NULL;
if (isc_create_blob(IB_STATUS, &ib_blob.link->handle, &ib_query->trans->handle, &ib_blob.bl_handle, &ib_blob.bl_qd)) {
_php_ibase_error(TSRMLS_C);
return FAILURE;
}
if (_php_ibase_blob_add(&b_var, &ib_blob TSRMLS_CC) != SUCCESS) {
return FAILURE;
}
if (isc_close_blob(IB_STATUS, &ib_blob.bl_handle)) {
_php_ibase_error(TSRMLS_C);
return FAILURE;
}
buf[i].val.qval = ib_blob.bl_qd;
var->sqldata = (void ISC_FAR *) &buf[i].val.qval;
if (isc_close_blob(IB_STATUS, &ib_blob.bl_handle)) {
_php_ibase_error(TSRMLS_C);
return FAILURE;
} else {
var->sqldata = (void ISC_FAR *) &blob->bl_qd;
}
buf[i].val.qval = ib_blob.bl_qd;
var->sqldata = (void ISC_FAR *) &buf[i].val.qval;
} else {
var->sqldata = (void ISC_FAR *) &((ibase_blob_handle *) Z_STRVAL_P(b_var))->bl_qd;
}
break;
case SQL_ARRAY:
@ -1568,7 +1564,8 @@ static int _php_ibase_exec(INTERNAL_FUNCTION_PARAMETERS, ibase_result **ib_resul
XSQLDA *in_sqlda = NULL, *out_sqlda = NULL;
BIND_BUF *bind_buf = NULL;
int rv = FAILURE;
char info_count[] = {isc_info_sql_records}, result[64];
static char info_count[] = {isc_info_sql_records};
char result[64];
ISC_STATUS isc_result;
RESET_ERRMSG;
@ -1639,8 +1636,8 @@ static int _php_ibase_exec(INTERNAL_FUNCTION_PARAMETERS, ibase_result **ib_resul
if (ib_query->out_sqlda) { /* output variables in select, select for update */
IBDEBUG("Query wants XSQLDA for output");
IB_RESULT = emalloc(sizeof(ibase_result));
IB_RESULT->link = ib_query->link->handle;
IB_RESULT->trans = ib_query->trans->handle;
IB_RESULT->link = ib_query->link;
IB_RESULT->trans = ib_query->trans;
IB_RESULT->stmt = ib_query->stmt;
IB_RESULT->statement_type = ib_query->statement_type;
IB_RESULT->drop_stmt = 0; /* when free result close but not drop!*/
@ -2272,7 +2269,8 @@ PHP_FUNCTION(ibase_num_rows)
zval **result_arg;
ibase_result *ib_result;
char info_count[] = {isc_info_sql_records}, result[64];
static char info_count[] = {isc_info_sql_records};
char result[64];
RESET_ERRMSG;
@ -2627,12 +2625,13 @@ static void _php_ibase_fetch_hash(INTERNAL_FUNCTION_PARAMETERS, int fetch_type)
ibase_blob_handle blob_handle;
unsigned long max_len = 0;
char bl_items[] = {isc_info_blob_total_length}, bl_info[20], *p;
static char bl_items[] = {isc_info_blob_total_length};
char bl_info[20], *p;
blob_handle.bl_handle = NULL;
blob_handle.bl_qd = *(ISC_QUAD ISC_FAR *) var->sqldata;
if (isc_open_blob(IB_STATUS, &ib_result->link, &ib_result->trans, &blob_handle.bl_handle, &blob_handle.bl_qd)) {
if (isc_open_blob(IB_STATUS, &ib_result->link->handle, &ib_result->trans->handle, &blob_handle.bl_handle, &blob_handle.bl_qd)) {
_php_ibase_error(TSRMLS_C);
RETURN_FALSE;
}
@ -2671,14 +2670,12 @@ static void _php_ibase_fetch_hash(INTERNAL_FUNCTION_PARAMETERS, int fetch_type)
}
} else { /* blob id only */
ibase_blob_handle *ib_blob_id = (ibase_blob_handle *) ecalloc(1, sizeof(ibase_blob_handle) + 1);
ib_blob_id->link = ib_result->link;
ib_blob_id->trans_handle = ib_result->trans;
ib_blob_id->bl_qd = *(ISC_QUAD ISC_FAR *) var->sqldata;
char result[BLOB_ID_LEN];
ibase_blob_handle ib_blob = { ib_result->link, NULL, *(ISC_QUAD ISC_FAR *) var->sqldata };
ZVAL_STRINGL(&tmp, (char *) ib_blob_id, sizeof(ibase_blob_handle),0);
sprintf(result, BLOB_ID_MASK, ib_blob.bl_qd.gds_quad_high, ib_blob.bl_qd.gds_quad_low);
zend_hash_update(&IBG(blob_table), result, BLOB_ID_LEN, &ib_blob, sizeof(ibase_blob_handle), NULL);
ZVAL_STRINGL(&tmp, result, BLOB_ID_LEN,1);
}
break;
case SQL_ARRAY: {
@ -2691,7 +2688,7 @@ static void _php_ibase_fetch_hash(INTERNAL_FUNCTION_PARAMETERS, int fetch_type)
ar_data = emalloc(ib_array->ar_size);
if (isc_array_get_slice(IB_STATUS, &ib_result->link, &ib_result->trans, &ar_qd, &ib_array->ar_desc, ar_data, &ib_array->ar_size)) {
if (isc_array_get_slice(IB_STATUS, &ib_result->link->handle, &ib_result->trans->handle, &ar_qd, &ib_array->ar_desc, ar_data, &ib_array->ar_size)) {
_php_ibase_error(TSRMLS_C);
efree(ar_data);
RETURN_FALSE;
@ -3298,6 +3295,10 @@ static int _php_ibase_blob_info(isc_blob_handle bl_handle, IBASE_BLOBINFO *bl_in
/* {{{ proto int ibase_blob_create([resource link_identifier])
Create blob for adding data */
#define BLOB_INPUT 1
#define BLOB_OUTPUT 2
PHP_FUNCTION(ibase_blob_create)
{
zval **link_arg;
@ -3328,11 +3329,11 @@ PHP_FUNCTION(ibase_blob_create)
}
ib_blob = (ibase_blob_handle *) emalloc(sizeof(ibase_blob_handle));
ib_blob->trans_handle = trans->handle;
ib_blob->link = ib_link->handle;
ib_blob->link = ib_link;
ib_blob->bl_handle = NULL;
ib_blob->type = BLOB_INPUT;
if (isc_create_blob(IB_STATUS, &ib_blob->link, &ib_blob->trans_handle, &ib_blob->bl_handle, &ib_blob->bl_qd)) {
if (isc_create_blob(IB_STATUS, &ib_blob->link->handle, &trans->handle, &ib_blob->bl_handle, &ib_blob->bl_qd)) {
efree(ib_blob);
_php_ibase_error(TSRMLS_C);
RETURN_FALSE;
@ -3348,6 +3349,7 @@ PHP_FUNCTION(ibase_blob_open)
{
zval **blob_arg;
ibase_blob_handle *ib_blob, *ib_blob_id;
ibase_trans *trans = NULL;
RESET_ERRMSG;
@ -3357,20 +3359,23 @@ PHP_FUNCTION(ibase_blob_open)
ib_blob = (ibase_blob_handle *) emalloc(sizeof(ibase_blob_handle));
if (_php_ibase_get_blob_id(blob_arg, &ib_blob_id) != SUCCESS) {
efree(ib_blob);
RETURN_FALSE;
}
if (ib_blob_id == NULL) { /* blob IS NULL or argument unset */
convert_to_string_ex(blob_arg);
if (zend_hash_find(&IBG(blob_table), Z_STRVAL_PP(blob_arg), Z_STRLEN_PP(blob_arg), (void **) &ib_blob_id) != SUCCESS) {
efree(ib_blob);
RETURN_FALSE;
}
*ib_blob = *ib_blob_id;
ib_blob->bl_handle = NULL;
ib_blob->type = BLOB_OUTPUT;
/* open default transaction */
if (_php_ibase_def_trans(ib_blob->link, &trans TSRMLS_CC) == FAILURE) {
RETURN_FALSE;
}
if (isc_open_blob(IB_STATUS, &ib_blob->link, &ib_blob->trans_handle, &ib_blob->bl_handle, &ib_blob->bl_qd)) {
if (isc_open_blob(IB_STATUS, &ib_blob->link->handle, &trans->handle, &ib_blob->bl_handle, &ib_blob->bl_qd)) {
efree(ib_blob);
_php_ibase_error(TSRMLS_C);
RETURN_FALSE;
@ -3396,6 +3401,11 @@ PHP_FUNCTION(ibase_blob_add)
if (_php_ibase_get_blob_handle(blob_arg, &ib_blob TSRMLS_CC) != SUCCESS) {
RETURN_FALSE;
}
if (ib_blob->type != BLOB_INPUT) {
_php_ibase_module_error("BLOB is not open for input");
RETURN_FALSE;
}
if (_php_ibase_blob_add(string_arg, ib_blob TSRMLS_CC) != SUCCESS) {
RETURN_FALSE;
}
@ -3419,7 +3429,13 @@ PHP_FUNCTION(ibase_blob_get)
RETURN_FALSE;
}
if (ib_blob->type != BLOB_OUTPUT) {
_php_ibase_module_error("BLOB is not open for output");
RETURN_FALSE;
}
convert_to_long_ex(len_arg);
if (_php_ibase_blob_get(return_value, ib_blob, Z_LVAL_PP(len_arg) TSRMLS_CC) != SUCCESS) {
RETURN_FALSE;
}
@ -3435,6 +3451,7 @@ static void _php_ibase_blob_end(INTERNAL_FUNCTION_PARAMETERS, int bl_end)
{
zval **blob_arg;
ibase_blob_handle *ib_blob;
char *result;
RESET_ERRMSG;
@ -3447,6 +3464,7 @@ static void _php_ibase_blob_end(INTERNAL_FUNCTION_PARAMETERS, int bl_end)
}
if (bl_end == BLOB_CLOSE) { /* return id here */
if (ib_blob->bl_qd.gds_quad_high || ib_blob->bl_qd.gds_quad_low) { /*not null ?*/
if (isc_close_blob(IB_STATUS, &ib_blob->bl_handle)) {
_php_ibase_error(TSRMLS_C);
@ -3454,17 +3472,23 @@ static void _php_ibase_blob_end(INTERNAL_FUNCTION_PARAMETERS, int bl_end)
}
}
ib_blob->bl_handle = NULL;
RETVAL_STRINGL((char *) ib_blob, sizeof(ibase_blob_handle), 1);
zend_list_delete(Z_LVAL_PP(blob_arg));
result = (char *) emalloc(BLOB_ID_LEN+1);
sprintf(result, BLOB_ID_MASK, ib_blob->bl_qd.gds_quad_high, ib_blob->bl_qd.gds_quad_low);
result[BLOB_ID_LEN] = '\0';
if (ib_blob->type == BLOB_INPUT) {
zend_hash_update(&IBG(blob_table), result, BLOB_ID_LEN, ib_blob, sizeof(ibase_blob_handle), NULL);
}
RETVAL_STRINGL(result, BLOB_ID_LEN, 0);
} else { /* discard created blob */
if (isc_cancel_blob(IB_STATUS, &ib_blob->bl_handle)) {
_php_ibase_error(TSRMLS_C);
RETURN_FALSE;
}
ib_blob->bl_handle = NULL;
zend_list_delete(Z_LVAL_PP(blob_arg));
RETURN_TRUE;
RETVAL_BOOL(1);
}
zend_list_delete(Z_LVAL_PP(blob_arg));
}
/* }}} */
@ -3490,6 +3514,7 @@ PHP_FUNCTION(ibase_blob_info)
{
zval **blob_arg, **result_var;
ibase_blob_handle *ib_blob_id;
ibase_trans *trans = NULL;
IBASE_BLOBINFO bl_info;
RESET_ERRMSG;
@ -3498,14 +3523,19 @@ PHP_FUNCTION(ibase_blob_info)
WRONG_PARAM_COUNT;
}
if (_php_ibase_get_blob_id(blob_arg, &ib_blob_id) != SUCCESS) {
if (zend_hash_find(&IBG(blob_table), Z_STRVAL_PP(blob_arg), Z_STRLEN_PP(blob_arg), (void **) &ib_blob_id) != SUCCESS) {
RETURN_FALSE;
}
/* open default transaction */
if (_php_ibase_def_trans(ib_blob_id->link, &trans TSRMLS_CC) == FAILURE) {
RETURN_FALSE;
}
array_init(return_value);
if (ib_blob_id->bl_qd.gds_quad_high || ib_blob_id->bl_qd.gds_quad_low) { /* not null ? */
if (isc_open_blob(IB_STATUS, &ib_blob_id->link, &ib_blob_id->trans_handle, &ib_blob_id->bl_handle, &ib_blob_id->bl_qd)) {
if (isc_open_blob(IB_STATUS, &ib_blob_id->link->handle, &trans->handle, &ib_blob_id->bl_handle, &ib_blob_id->bl_qd)) {
_php_ibase_error(TSRMLS_C);
RETURN_FALSE;
}
@ -3561,6 +3591,7 @@ PHP_FUNCTION(ibase_blob_echo)
char bl_data[IBASE_BLOB_SEG];
unsigned short seg_len;
ibase_blob_handle *ib_blob_id;
ibase_trans *trans = NULL;
RESET_ERRMSG;
@ -3568,32 +3599,34 @@ PHP_FUNCTION(ibase_blob_echo)
WRONG_PARAM_COUNT;
}
if (_php_ibase_get_blob_id(blob_arg, &ib_blob_id) != SUCCESS) {
if (zend_hash_find(&IBG(blob_table), Z_STRVAL_PP(blob_arg), Z_STRLEN_PP(blob_arg), (void **) &ib_blob_id) != SUCCESS) {
RETURN_FALSE;
}
if (ib_blob_id) { /* not null? */
if (isc_open_blob(IB_STATUS, &ib_blob_id->link, &ib_blob_id->trans_handle, &ib_blob_id->bl_handle, &ib_blob_id->bl_qd)) {
_php_ibase_error(TSRMLS_C);
RETURN_FALSE;
}
/* open default transaction */
if (_php_ibase_def_trans(ib_blob_id->link, &trans TSRMLS_CC) == FAILURE) {
RETURN_FALSE;
}
while (!isc_get_segment(IB_STATUS, &ib_blob_id->bl_handle, &seg_len, sizeof(bl_data), bl_data) || IB_STATUS[1] == isc_segment) {
PHPWRITE(bl_data, seg_len);
}
if (IB_STATUS[0] && (IB_STATUS[1] != isc_segstr_eof)) {
_php_ibase_error(TSRMLS_C);
RETURN_FALSE;
}
if (isc_open_blob(IB_STATUS, &ib_blob_id->link->handle, &trans->handle, &ib_blob_id->bl_handle, &ib_blob_id->bl_qd)) {
_php_ibase_error(TSRMLS_C);
RETURN_FALSE;
}
if (isc_close_blob(IB_STATUS, &ib_blob_id->bl_handle)) {
_php_ibase_error(TSRMLS_C);
RETURN_FALSE;
}
ib_blob_id->bl_handle = NULL;
} /* not null ? */
while (!isc_get_segment(IB_STATUS, &ib_blob_id->bl_handle, &seg_len, sizeof(bl_data), bl_data) || IB_STATUS[1] == isc_segment) {
PHPWRITE(bl_data, seg_len);
}
if (IB_STATUS[0] && (IB_STATUS[1] != isc_segstr_eof)) {
_php_ibase_error(TSRMLS_C);
RETURN_FALSE;
}
if (isc_close_blob(IB_STATUS, &ib_blob_id->bl_handle)) {
_php_ibase_error(TSRMLS_C);
RETURN_FALSE;
}
ib_blob_id->bl_handle = NULL;
RETURN_TRUE;
}
@ -3606,7 +3639,7 @@ PHP_FUNCTION(ibase_blob_import)
zval **link_arg, **file_arg;
int link_id = 0, size;
unsigned short b;
ibase_blob_handle ib_blob = { NULL, NULL, { 0, 0 }, NULL };
ibase_blob_handle ib_blob = { NULL, NULL, { 0, 0 }, 0 };
ibase_db_link *ib_link;
ibase_trans *trans = NULL;
#if (IBASE_BLOB_SEG > USHRT_MAX)
@ -3614,6 +3647,7 @@ PHP_FUNCTION(ibase_blob_import)
#else
char bl_data[IBASE_BLOB_SEG];
#endif
char result[BLOB_ID_LEN];
php_stream *stream;
RESET_ERRMSG;
@ -3644,10 +3678,9 @@ PHP_FUNCTION(ibase_blob_import)
php_stream_from_zval(stream, file_arg);
ib_blob.link = ib_link->handle;
ib_blob.trans_handle = trans->handle;
ib_blob.link = ib_link;
if (isc_create_blob(IB_STATUS, &ib_blob.link, &ib_blob.trans_handle, &ib_blob.bl_handle, &ib_blob.bl_qd)) {
if (isc_create_blob(IB_STATUS, &ib_blob.link->handle, &trans->handle, &ib_blob.bl_handle, &ib_blob.bl_qd)) {
_php_ibase_error(TSRMLS_C);
RETURN_FALSE;
}
@ -3667,8 +3700,9 @@ PHP_FUNCTION(ibase_blob_import)
RETURN_FALSE;
}
ib_blob.bl_handle = NULL;
RETVAL_STRINGL((char *) &ib_blob, sizeof(ibase_blob_handle), 1);
sprintf(result, BLOB_ID_MASK, ib_blob.bl_qd.gds_quad_high, ib_blob.bl_qd.gds_quad_low);
zend_hash_update(&IBG(blob_table), result, BLOB_ID_LEN, &ib_blob, sizeof(ibase_blob_handle), NULL);
RETURN_STRINGL(result, BLOB_ID_LEN, 1);
}
/* }}} */

11
ext/interbase/php_interbase.h
View File

@ -114,6 +114,7 @@ ZEND_BEGIN_MODULE_GLOBALS(ibase)
char *cfg_timeformat;
char errmsg[MAX_ERRMSG];
long sql_code;
HashTable blob_table;
ZEND_END_MODULE_GLOBALS(ibase)
typedef struct {
@ -142,10 +143,10 @@ typedef struct {
} ibase_array;
typedef struct {
isc_tr_handle trans_handle;
isc_db_handle link;
ISC_QUAD bl_qd;
ibase_db_link *link;
isc_blob_handle bl_handle;
ISC_QUAD bl_qd;
unsigned short type;
} ibase_blob_handle;
typedef struct {
@ -164,8 +165,8 @@ typedef struct {
} ibase_query;
typedef struct {
isc_db_handle link; /* db link for this result */
isc_tr_handle trans;
ibase_db_link *link;
ibase_trans *trans;
isc_stmt_handle stmt;
int drop_stmt;
XSQLDA *out_sqlda;

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