Patch NotApatch for PDO_IBM Bug #80238
Patch version 2020-10-15 09:12 UTC
Return to Bug #80238 |
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Patch Revisions:
Developer: christian.koelbl@stahlgruber.de
/*
+----------------------------------------------------------------------+
| (C) Copyright IBM Corporation 2006. |
+----------------------------------------------------------------------+
| |
| Licensed under the Apache License, Version 2.0 (the "License"); you |
| may not use this file except in compliance with the License. You may |
| obtain a copy of the License at |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| implied. See the License for the specific language governing |
| permissions and limitations under the License. |
+----------------------------------------------------------------------+
| Authors: Rick McGuire, Dan Scott, Krishna Raman, Kellen Bombardier, |
| Ambrish Bhargava, Rahul Priyadarshi |
+----------------------------------------------------------------------+
Changes:
14.10.2020 Koelbl (Company: Stahlgruber/LKQ)
- function stmt_bind_parameter(): some bugs in PHP7-case with
curr->parameter solved
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "pdo/php_pdo.h"
#include "pdo/php_pdo_driver.h"
#include "php_pdo_ibm.h"
#include "php_pdo_ibm_int.h"
#ifdef PASE
# define SQL_LEN_DATA_AT_EXEC(length) length
#else
# if !defined(SQL_LEN_DATA_AT_EXEC) && !defined(SQL_LEN_DATA_AT_EXEC_OFFSET)
# define SQL_LEN_DATA_AT_EXEC_OFFSET (-100)
# define SQL_LEN_DATA_AT_EXEC(length) (-(length)+SQL_LEN_DATA_AT_EXEC_OFFSET)
# endif
#endif
#ifdef PASE
/* i5/OS V6R1 introduced incompatible change at the compile level
* adding from v6r1 sqlcli.h to allow one binary for
* v5r3, v5r4, v6r1+
*/
#define SQL_BINARY_V6 -2
#define SQL_VARBINARY_V6 -3
#define SQL_C_BINARY_V6 SQL_BINARY_V6
#define SQL_ATTR_INFO_USERID 10103
#define SQL_ATTR_INFO_WRKSTNNAME 10104
#define SQL_ATTR_INFO_APPLNAME 10105
#define SQL_ATTR_INFO_ACCTSTR 10106
#endif /* PASE */
struct lob_stream_data
{
stmt_handle *stmt_res;
pdo_stmt_t *stmt;
int colno;
};
#ifdef PASE
static int get_lob_length(pdo_stmt_t *stmt, column_data *col_res)
{
SQLRETURN rc = 0;
SQLHANDLE new_hstmt;
conn_handle *conn_res = (conn_handle *)stmt->dbh->driver_data;
rc = SQLAllocHandle(SQL_HANDLE_STMT, conn_res->hdbc, &new_hstmt);
if (rc != SQL_SUCCESS) {
return rc;
}
rc = SQLGetLength((SQLHSTMT)new_hstmt,
col_res->loc_type,
col_res->lob_loc,
&col_res->lob_data_length,
&col_res->loc_ind);
check_stmt_error(rc, "SQLGetLength");
if (rc != SQL_SUCCESS) {
col_res->lob_data_length=0;
}
SQLFreeHandle(SQL_HANDLE_STMT, new_hstmt);
return rc;
}
static int get_lob_substring(pdo_stmt_t *stmt, column_data *col_res,
SQLSMALLINT ctype, SQLINTEGER *out_length)
{
SQLRETURN rc = 0;
SQLHANDLE new_hstmt;
conn_handle *conn_res = (conn_handle *)stmt->dbh->driver_data;
*out_length=0;
col_res->lob_data_offset = 0;
col_res->lob_data[col_res->lob_data_length]='\0';
rc = SQLAllocHandle(SQL_HANDLE_STMT, conn_res->hdbc, &new_hstmt);
if (rc != SQL_SUCCESS) {
return rc;
}
rc = SQLGetSubString(
(SQLHSTMT)new_hstmt,
col_res->loc_type,
col_res->lob_loc,
1,
col_res->lob_data_length,
ctype,
col_res->lob_data,
col_res->lob_data_length+1,
out_length,
&col_res->loc_ind);
check_stmt_error(rc, "SQLGetSubString");
col_res->lob_data[col_res->lob_data_length]='\0';
SQLFreeHandle(SQL_HANDLE_STMT, new_hstmt);
return rc;
}
#endif
size_t lob_stream_read(php_stream *stream, char *buf, size_t count TSRMLS_DC)
{
SQLINTEGER readBytes = 0;
struct lob_stream_data *data = stream->abstract;
column_data *col_res = &data->stmt_res->columns[data->colno];
stmt_handle *stmt_res = data->stmt_res;
pdo_stmt_t *stmt = data->stmt;
int ctype = 0;
SQLRETURN rc = 0;
long sLength;
switch (col_res->data_type) {
default:
#ifndef PASE
case SQL_LONGVARCHAR:
#else /* i5os string type required for the ascii->ebcdic conversion */
case SQL_CLOB:
case SQL_DBCLOB:
#endif
ctype = SQL_C_CHAR;
break;
#ifndef PASE
case SQL_LONGVARBINARY:
#endif
#ifdef PASE /* i5/OS incompatible v6r1 change */
case SQL_VARBINARY_V6:
case SQL_BINARY_V6:
#endif /* PASE */
case SQL_VARBINARY:
case SQL_BINARY:
case SQL_BLOB:
#ifndef PASE
case SQL_CLOB:
#endif
case SQL_XML:
#ifdef PASE /* i5/OS V6R1 incompatible change */
if (PDO_IBM_G(is_i5os_classic)){
ctype = SQL_C_BINARY;
} else {
ctype = SQL_C_BINARY_V6;
}
#else
ctype = SQL_C_BINARY;
#endif /* not PASE */
break;
}
#ifdef PASE
if (buf == NULL) {
rc = get_lob_length(stmt, col_res);
if (rc != SQL_ERROR && col_res->lob_data_length > 0) {
col_res->lob_data = emalloc(col_res->lob_data_length+1);
rc = get_lob_substring(stmt, col_res, ctype, &readBytes);
}
} else {
readBytes = MIN(count, col_res->lob_data_length - col_res->lob_data_offset);
if (readBytes > 0) {
memcpy( buf, col_res->lob_data + col_res->lob_data_offset, readBytes);
col_res->lob_data_offset +=readBytes;
}
}
if (readBytes <= 0) {
readBytes = -1;
if (buf != NULL) {
/* EOF reached */
stream->eof = 1;
}
}
#else
rc = SQLGetData(stmt_res->hstmt, data->colno + 1, ctype, buf, count, &readBytes);
check_stmt_error(rc, "SQLGetData");
if (readBytes == -1) { /*For NULL CLOB/BLOB values */
return (size_t) readBytes;
}
if (readBytes > count) {
if (col_res->data_type == SQL_LONGVARCHAR) { /*Dont return the NULL at end of CLOB buffer */
readBytes = count - 1;
} else {
readBytes = count;
}
}
#endif
return (size_t) readBytes;
}
size_t lob_stream_write(php_stream *stream, const char *buf, size_t count TSRMLS_DC)
{
return 0;
}
int lob_stream_flush(php_stream *stream TSRMLS_DC)
{
return 0;
}
int lob_stream_close(php_stream *stream, int close_handle TSRMLS_DC)
{
struct lob_stream_data *data = stream->abstract;
efree(data);
return 0;
}
php_stream_ops lob_stream_ops = {
lob_stream_write, /* Write */
lob_stream_read, /* Read */
lob_stream_close, /* Close */
lob_stream_flush, /* Flush */
"ibm PDO Lob stream",
NULL, /* Seek */
NULL, /* GetS */
NULL, /* Cast */
NULL /* Stat */
};
php_stream* create_lob_stream( pdo_stmt_t *stmt , stmt_handle *stmt_res , int colno TSRMLS_DC )
{
struct lob_stream_data *data;
column_data *col_res;
php_stream *retval;
data = emalloc(sizeof(struct lob_stream_data));
data->stmt_res = stmt_res;
data->stmt = stmt;
data->colno = colno;
col_res = &data->stmt_res->columns[data->colno];
retval = (php_stream *) php_stream_alloc(&lob_stream_ops, data, NULL, "r");
/* Find out if the column contains NULL data */
if (lob_stream_read(retval, NULL, 0 TSRMLS_CC) == SQL_NULL_DATA) {
php_stream_close(retval);
return NULL;
} else
return retval;
}
/*
* Clear up our column descriptors. This is done either from
* the statement constructors or whenever we traverse from one
* result set to the next.
*/
static void stmt_free_column_descriptors(pdo_stmt_t *stmt TSRMLS_DC)
{
stmt_handle *stmt_res = (stmt_handle *) stmt->driver_data;
if (stmt_res->columns != NULL) {
int i;
/* see if any of the columns have attached storage too. */
for (i = 0; i < stmt->column_count; i++) {
/*
* Was this a string form? We have an allocated string
* buffer that also needs releasing.
*/
if (stmt_res->columns[i].returned_type == PDO_PARAM_STR) {
efree(stmt_res->columns[i].data.str_val);
}
if (stmt_res->columns[i].returned_type == PDO_PARAM_LOB && (stmt_res->columns[i].lob_data != NULL)) {
efree(stmt_res->columns[i].lob_data);
}
}
/* free the entire column list. */
efree(stmt_res->columns);
stmt_res->columns = NULL;
}
}
/*
* Cleanup any driver-allocated control blocks attached to a statement
* instance. This cleans up the driver_data control block, as
* well as any temporary allocations used during execution.
*/
void stmt_cleanup(pdo_stmt_t *stmt TSRMLS_DC)
{
stmt_handle *stmt_res = (stmt_handle *) stmt->driver_data;
if (stmt_res != NULL) {
if (stmt_res->converted_statement != NULL) {
efree(stmt_res->converted_statement);
}
if (stmt_res->lob_buffer != NULL) {
stmt_res->lob_buffer = NULL;
}
/* free any descriptors we're keeping active */
stmt_free_column_descriptors(stmt TSRMLS_CC);
efree(stmt_res);
}
stmt->driver_data = NULL;
}
/* get the parameter description information for a positional bound parameter. */
static int stmt_get_parameter_info(pdo_stmt_t * stmt, struct pdo_bound_param_data *param
TSRMLS_DC)
{
param_node *param_res = (param_node *) param->driver_data;
stmt_handle *stmt_res = NULL;
int rc = 0;
/* do we have the parameter information yet? */
if (param_res == NULL) {
/* allocate a new one and attach to the PDO param structure */
param_res = (param_node *) emalloc(sizeof(param_node));
check_stmt_allocation(param_res, "stmt_get_parameter",
"Unable to allocate parameter driver data");
/* get the statement specifics */
stmt_res = (stmt_handle *) stmt->driver_data;
/*
* NB: The PDO parameter numbers are origin zero, but the
* SQLDescribeParam() ones start with 1.
*/
rc = SQLDescribeParam((SQLHSTMT)stmt_res->hstmt, (SQLUSMALLINT)param->paramno + 1, ¶m_res->data_type,
¶m_res->param_size, ¶m_res->scale, ¶m_res->nullable);
/* Free the memory if SQLDescribeParam failed */
if (rc == SQL_ERROR) {
efree(param_res);
param_res = NULL;
}
check_stmt_error(rc, "SQLDescribeParam");
/* only attach this if we succeed */
param->driver_data = param_res;
/*
* but see if we need to alter this for binary forms or
* can optimize numerics a little.
*/
switch (param_res->data_type) {
/*
* The binary forms need to be transferred as binary
* data, not as char data.
*/
#ifdef PASE /* i5/OS incompatible v6r1 change */
case SQL_VARBINARY_V6:
case SQL_BINARY_V6:
#endif /* PASE */
case SQL_BINARY:
case SQL_BLOB:
#ifndef PASE /* i5/OS CLOB is char not binary (default) */
case SQL_CLOB:
#endif
case SQL_XML:
case SQL_VARBINARY:
#ifndef PASE
case SQL_LONGVARBINARY:
#endif
#ifdef PASE /* i5/OS V6R1 incompatible change */
if (PDO_IBM_G(is_i5os_classic)){
param_res->ctype = SQL_C_BINARY;
} else {
param_res->ctype = SQL_C_BINARY_V6;
}
#else
param_res->ctype = SQL_C_BINARY;
#endif /* not PASE */
break;
/*
* Numeric forms we can map directly to a long
* int value
*/
case SQL_SMALLINT:
case SQL_INTEGER:
param_res->ctype = SQL_C_LONG;
break;
/* everything else will transfer as binary */
default:
/* by default, we transfer as character data */
param_res->ctype = SQL_C_CHAR;
break;
}
}
return TRUE;
}
/*
* Bind a statement parameter to the PHP value supplying or receiving the
* parameter data.
*/
int stmt_bind_parameter(pdo_stmt_t *stmt, struct pdo_bound_param_data *curr TSRMLS_DC)
{
int rc, is_num = 0;
stmt_handle *stmt_res = (stmt_handle *) stmt->driver_data;
param_node *param_res = NULL;
SQLSMALLINT inputOutputType;
#ifdef PASE
char *data_buf = NULL;
#endif
/* make sure we have current description information. */
if (stmt_get_parameter_info(stmt, curr TSRMLS_CC) == FALSE) {
return FALSE;
}
param_res = (param_node *) curr->driver_data;
/*
* Now figure out the parameter type so we can tell the database code
* how to handle this.
* this is rare, really only used for stored procedures.
*/
if (curr->param_type & PDO_PARAM_INPUT_OUTPUT > 0) {
inputOutputType = SQL_PARAM_INPUT_OUTPUT;
}
/*
* If this is a non-positive length, we can't assign a value,
* so this is by definition an INPUT param.
*/
else if (curr->max_value_len <= 0) {
inputOutputType = SQL_PARAM_INPUT;
} else {
/* everything else is output. */
inputOutputType = SQL_PARAM_OUTPUT;
}
/*
* Now do the actual binding, which is controlled by the
* PDO supplied type.
*/
switch (PDO_PARAM_TYPE(curr->param_type)) {
/* not implemented yet */
case PDO_PARAM_STMT:
RAISE_IBM_STMT_ERROR("IM001", "param_hook",
"Driver does not support statement parameters");
return FALSE;
/* this is a long value for PHP */
case PDO_PARAM_INT:
/*
* If the parameter type is a numeric type, we'll bind this
* directly,
*/
if (param_res->ctype == SQL_C_LONG) {
#ifdef PASE /* i5/OS SQLBindParameter null issues */
if (Z_TYPE_P(curr->parameter) == IS_NULL)
convert_to_long(curr->parameter);
#endif /* PASE */
#if PHP_MAJOR_VERSION >= 7
zval *parameter;
if (Z_ISREF(curr->parameter)) {
parameter = Z_REFVAL(curr->parameter);
} else {
parameter = &curr->parameter;
}
if ( parameter == NULL || Z_TYPE_P(parameter) == IS_NULL ) {
#else
if (Z_TYPE_P(curr->parameter) == IS_NULL) {
#endif
/* null value was found */
param_res->transfer_length = SQL_NULL_DATA;
rc = SQLBindParameter(stmt_res->hstmt,
curr->paramno + 1,
inputOutputType,
param_res->ctype,
param_res->data_type,
param_res->param_size,
param_res->scale, NULL,
curr->max_value_len <=
0 ? 0 : curr->max_value_len,
¶m_res->transfer_length);
check_stmt_error(rc, "SQLBindParameter");
return TRUE;
} else {
#ifdef PASE /* i5/OS SQLBindParameter string ptr to null byte issues */
if (Z_TYPE_P(curr->parameter) == IS_STRING
&& !strcmp(curr->parameter->value.str.val, ""))
convert_to_long(curr->parameter);
#endif /* PASE */
#if PHP_MAJOR_VERSION >= 7
convert_to_string(parameter);
#else
convert_to_string(curr->parameter);
#endif
#if PHP_MAJOR_VERSION >= 7
// Koelbl 14.10.2020 change
if (!strcmp(parameter->value.str->val, "")) {
#else
if (!strcmp(curr->parameter->value.str.val, "")) {
#endif
/* empty string was found */
param_res->transfer_length = SQL_NULL_DATA;
rc = SQLBindParameter(stmt_res->hstmt,
curr->paramno + 1,
inputOutputType,
param_res->ctype,
param_res->data_type,
param_res->param_size,
param_res->scale, NULL,
curr->max_value_len <=
0 ? 0 : curr->max_value_len,
¶m_res->transfer_length);
check_stmt_error(rc, "SQLBindParameter");
return TRUE;
} else {
/* force this to be a real boolean value */
#if PHP_MAJOR_VERSION >= 7
convert_to_string(parameter);
#else
convert_to_string(curr->parameter);
#endif
rc = SQLBindParameter(stmt_res->hstmt,
curr->paramno + 1,
inputOutputType, SQL_C_LONG,
param_res->data_type,
param_res->param_size,
param_res->scale,
#if PHP_MAJOR_VERSION >= 7
// Koelbl 14.10.2020 change
&((parameter)->value.lval),
#else
&((curr->parameter)->value.lval),
#endif
0, NULL);
check_stmt_error(rc, "SQLBindParameter");
return TRUE;
}
}
}
/*
* NOTE: We fall through from above if there is a
* type mismatch.
*/
/* a string value (very common) */
case PDO_PARAM_BOOL:
case PDO_PARAM_STR:
/*
* If we're capable of handling an integer value, but
* PDO is telling us string, then change this now.
*/
if (param_res->ctype == SQL_C_LONG) {
/* change this to a character type */
#ifdef PASE /* i5/OS SQLBindParameter string ptr to null byte issues */
if (!strcmp(curr->parameter->value.str.val, ""))
convert_to_long(curr->parameter);
#endif /* PASE */
param_res->ctype = SQL_C_CHAR;
is_num = 1;
}
#ifdef PASE /* i5/OS SQLBindParameter null issues */
if ((param_res->data_type == SQL_CLOB
|| param_res->data_type == SQL_DBCLOB)
&& Z_TYPE_P(curr->parameter) == IS_NULL)
convert_to_string(curr->parameter);
#endif /* PASE */
#if PHP_MAJOR_VERSION >= 7
zval *parameter;
if (Z_ISREF(curr->parameter)) {
parameter = Z_REFVAL(curr->parameter);
} else {
parameter = &curr->parameter;
}
if ( parameter == NULL || Z_TYPE_P(parameter) == IS_NULL ||
(is_num && Z_STRVAL_P(parameter) != NULL &&
(Z_STRVAL_P(parameter) == '\0'))) {
#else
if (Z_TYPE_P(curr->parameter) == IS_NULL
|| (is_num && Z_STRVAL_P(curr->parameter) != NULL
&& (Z_STRVAL_P(curr->parameter) == '\0'))) {
#endif
#ifdef PASE /* i5/OS DBCLOB */
if (param_res->data_type != SQL_BLOB &&
param_res->data_type != SQL_CLOB &&
param_res->data_type != SQL_DBCLOB)
param_res->ctype = SQL_C_LONG;
#else
if (param_res->data_type != SQL_BLOB &&
param_res->data_type != SQL_CLOB)
param_res->ctype = SQL_C_LONG;
#endif /* PASE */
if (param_res->data_type != SQL_DECIMAL) {
param_res->param_size = 0;
}
param_res->scale = 0;
curr->max_value_len = 0;
param_res->transfer_length = SQL_NULL_DATA;
switch(param_res->data_type) {
case SQL_TYPE_DATE:
case SQL_DATETIME:
case SQL_TYPE_TIME:
case SQL_TYPE_TIMESTAMP:
param_res->transfer_length = SQL_NULL_DATA;
param_res->ctype = SQL_C_CHAR;
rc = SQLBindParameter(stmt_res->hstmt, curr->paramno + 1,
inputOutputType, param_res->ctype,
param_res->data_type,
param_res->param_size,
param_res->scale, NULL,
curr->max_value_len <=
0 ? 0 : curr->max_value_len,
¶m_res->transfer_length);
break;
default:
rc = SQLBindParameter(stmt_res->hstmt, curr->paramno + 1,
inputOutputType, param_res->ctype,
param_res->data_type,
param_res->param_size,
param_res->scale,
#if PHP_MAJOR_VERSION >= 7
// Koelbl 14.10.2020 change
&((parameter)->value.lval),
#else
&((curr->parameter)->value.lval),
#endif
curr->max_value_len,
¶m_res->transfer_length);
}
check_stmt_error(rc, "SQLBindParameter");
} else {
/* force this to be a real string value */
#if PHP_MAJOR_VERSION >= 7
convert_to_string(parameter);
#else
convert_to_string(curr->parameter);
#endif
/*
* The transfer length to zero now...this
* gets updated at EXEC_PRE time.
*/
param_res->transfer_length = 0;
#if PHP_MAJOR_VERSION >= 7
param_res->param_size = Z_STRLEN_P(parameter);
#else
param_res->param_size = Z_STRLEN_P(curr->parameter);
#endif
/*
* Now we need to make sure the string buffer
* is large enough to receive a new value if
* this is an output or in/out parameter
*/
#if PHP_MAJOR_VERSION >= 7
if (inputOutputType != SQL_PARAM_INPUT &&
curr->max_value_len > Z_STRLEN_P(parameter)) {
/* reallocate this to the new size */
Z_PTR_P(parameter) = erealloc(Z_STRVAL_P(parameter),
curr->max_value_len + 1);
check_stmt_allocation(Z_STRVAL_P(parameter),
"stmt_bind_parameter",
"Unable to allocate bound parameter");
}
#else
if (inputOutputType != SQL_PARAM_INPUT &&
curr->max_value_len > Z_STRLEN_P(curr->parameter)) {
/* reallocate this to the new size */
Z_STRVAL_P(curr->parameter) = erealloc(Z_STRVAL_P(curr->parameter),
curr->max_value_len + 1);
check_stmt_allocation(Z_STRVAL_P(curr->parameter),
"stmt_bind_parameter",
"Unable to allocate bound parameter");
}
#endif
rc = SQLBindParameter(stmt_res->hstmt, curr->paramno + 1,
inputOutputType, param_res->ctype,
param_res->data_type,
param_res->param_size,
param_res->scale,
#if PHP_MAJOR_VERSION >= 7
Z_STRVAL_P(parameter),
#else
Z_STRVAL_P(curr->parameter),
#endif
curr->max_value_len <=
0 ? 0 : curr->max_value_len,
¶m_res->transfer_length);
check_stmt_error(rc, "SQLBindParameter");
}
return TRUE;
/*
* This is either a string, or, if the length is zero,
* then this is a pointer to a PHP stream.
*/
case PDO_PARAM_LOB:
if (inputOutputType != SQL_PARAM_INPUT) {
inputOutputType = SQL_PARAM_INPUT;
}
/* have we bound a LOB to a long type for some reason? */
if (param_res->ctype == SQL_C_LONG) {
/* transfer this as character data. */
param_res->ctype = SQL_C_CHAR;
}
#ifndef PASE
if (param_res->data_type == SQL_BLOB ||
param_res->data_type == SQL_XML ||
param_res->data_type == SQL_CLOB) {
/* transfer this as binary data. */
param_res->ctype = SQL_C_BINARY;
}
#else
if (param_res->data_type == SQL_CLOB
|| param_res->data_type == SQL_DBCLOB) {
param_res->ctype = SQL_C_CHAR;
} else {
if (PDO_IBM_G(is_i5os_classic)){
param_res->ctype = SQL_C_BINARY;
} else {
param_res->ctype = SQL_C_BINARY_V6;
}
}
#endif
/* indicate we're going to transfer the data at exec time. */
#ifndef PASE
param_res->transfer_length = SQL_DATA_AT_EXEC;
#else
if (Z_TYPE_P(curr->parameter) == IS_RESOURCE) {
param_res->transfer_length = SQL_DATA_AT_EXEC;
data_buf = (char *)curr;
} else {
param_res->transfer_length = SQL_LEN_DATA_AT_EXEC(Z_STRLEN_P(curr->parameter));
/* get the pointer to the string data */
data_buf = Z_STRVAL_P(curr->parameter);
/* to cause a conversion to ebcdic */
}
#endif
/*
* We can't bind LOBs at this point...we process all
* of this at execute time. However, we set the value
* data to the PDO binding control block and set the
* SQL_DATA_AT_EXEC value to cause it to prompt us for
* the data at execute time. The pointer is recoverable
* at that time by using SQLParamData(), and we can
* then process the request.
*/
rc = SQLBindParameter(stmt_res->hstmt, curr->paramno + 1,
inputOutputType, param_res->ctype,
param_res->data_type,
param_res->param_size, param_res->scale,
#ifndef PASE
(SQLPOINTER) curr,
#else
(SQLPOINTER) data_buf,
#endif
4096,
¶m_res->transfer_length);
check_stmt_error(rc, "SQLBindParameter");
return TRUE;
/* this is an unknown type */
default:
RAISE_IBM_STMT_ERROR( "IM001", "SQLBindParameter", "Unknown parameter type" );
return FALSE;
}
return TRUE;
}
/* handle the pre-execution phase for bound parameters. */
static int stmt_parameter_pre_execute(pdo_stmt_t *stmt, struct pdo_bound_param_data *curr TSRMLS_DC)
{
stmt_handle *stmt_res = (stmt_handle *) stmt->driver_data;
param_node *param_res = (param_node *) curr->driver_data;
/*
* Now we need to prepare the parameter binding information
* for execution. If this is a LOB, then we need to ensure
* the LOB data is going to be available and make sure
* the binding is tagged to provide the data at exec time.
*/
#if PHP_MAJOR_VERSION >= 7
zval *parameter;
if (Z_ISREF(curr->parameter)) {
parameter = Z_REFVAL(curr->parameter);
} else {
parameter = &curr->parameter;
}
#endif
if (PDO_PARAM_TYPE(curr->param_type) == PDO_PARAM_LOB) {
/*
* If the LOB data is a stream, we need to make sure it is
* really there.
*/
#if PHP_MAJOR_VERSION >= 7
if (Z_TYPE_P(parameter) == IS_RESOURCE) {
#else
if (Z_TYPE_P(curr->parameter) == IS_RESOURCE) {
#endif
php_stream *stm;
php_stream_statbuf sb;
/* make sure we have a stream to work with */
#if PHP_MAJOR_VERSION >= 7
php_stream_from_zval_no_verify(stm, parameter);
#else
php_stream_from_zval_no_verify(stm, &curr->parameter);
#endif
if (stm == NULL) {
RAISE_IBM_STMT_ERROR( "HY000" , "SQLBindParameter" ,
"PDO_PARAM_LOB file stream is invalid");
}
/*
* Now see if we can retrieve length information from
* the stream
*/
if (php_stream_stat(stm, &sb) == 0) {
/*
* Yes, we're able to give the statement some
* hints about the size.
*/
#ifndef PASE
param_res->transfer_length = SQL_LEN_DATA_AT_EXEC(sb.sb.st_size);
#endif
} else {
/*
* Still unknown...we'll have to do everything
* at execute size.
*/
param_res->transfer_length = SQL_LEN_DATA_AT_EXEC(0);
}
} else {
/*
* Convert this to a string value now. We bound the
* data pointer to our parameter descriptor, so we
* can't just supply this directly yet, but we can
* at least give the size hint information.
*/
#if PHP_MAJOR_VERSION >= 7
convert_to_string(parameter);
param_res->transfer_length = SQL_LEN_DATA_AT_EXEC(Z_STRLEN_P(parameter));
#else
convert_to_string(curr->parameter);
param_res->transfer_length = SQL_LEN_DATA_AT_EXEC(Z_STRLEN_P(curr->parameter));
#endif
}
} else {
#if PHP_MAJOR_VERSION >= 7
if (Z_TYPE_P(parameter) != IS_NULL && param_res != NULL) {
#else
if (Z_TYPE_P(curr->parameter) != IS_NULL && param_res != NULL) {
#endif
/*
* if we're processing this as string or binary data,
* then directly update the length to the real value.
*/
if (param_res->ctype == SQL_C_LONG) {
/* make sure this is a long value */
#if PHP_MAJOR_VERSION >= 7
convert_to_long(parameter);
#else
convert_to_long(curr->parameter);
#endif
} else {
/*
* Make sure this is a string value...it might
* have been changed between the bind and the
* execute
*/
#if PHP_MAJOR_VERSION >= 7
convert_to_string(parameter);
param_res->transfer_length = Z_STRLEN_P(parameter);
#else
convert_to_string(curr->parameter);
param_res->transfer_length = Z_STRLEN_P(curr->parameter);
#endif
}
}
}
return TRUE;
}
/* post-execution bound parameter handling. */
static int stmt_parameter_post_execute(pdo_stmt_t *stmt, struct pdo_bound_param_data *curr TSRMLS_DC)
{
param_node *param_res = (param_node *) curr->driver_data;
/*
* If the type of the parameter is a string, we need to update the
* string length and make sure that these are null terminated.
* Values returned from the DB are just copied directly into the bound
* locations, so we need to update the PHP control blocks so that the
* data is processed correctly.
*/
#if PHP_MAJOR_VERSION >= 7
zval *parameter;
if (Z_ISREF(curr->parameter)) {
parameter = Z_REFVAL(curr->parameter);
} else {
parameter = &curr->parameter;
}
if (Z_TYPE_P(parameter) == IS_STRING) {
#else
if (Z_TYPE_P(curr->parameter) == IS_STRING) {
#endif
if (param_res->transfer_length < 0 || param_res->transfer_length == SQL_NULL_DATA) {
#if PHP_MAJOR_VERSION >= 7
Z_STRLEN_P(parameter) = 0;
Z_STRVAL_P(parameter)[0] = '\0';
#else
Z_STRLEN_P(curr->parameter) = 0;
Z_STRVAL_P(curr->parameter)[0] = '\0';
#endif
} else if (param_res->transfer_length == 0) {
#if PHP_MAJOR_VERSION >= 7
ZVAL_EMPTY_STRING(parameter);
#else
ZVAL_EMPTY_STRING(curr->parameter);
#endif
} else {
#if PHP_MAJOR_VERSION >= 7
Z_STRLEN_P(parameter) = param_res->transfer_length;
Z_STRVAL_P(parameter)[param_res->transfer_length] = '\0';
#else
Z_STRLEN_P(curr->parameter) = param_res->transfer_length;
Z_STRVAL_P(curr->parameter)[param_res->transfer_length] = '\0';
#endif
}
}
return TRUE;
}
/* bind a column to an internally allocated buffer location. */
static int stmt_bind_column(pdo_stmt_t *stmt, int colno TSRMLS_DC)
{
stmt_handle *stmt_res;
column_data *col_res;
struct pdo_column_data *col;
int rc;
int in_length = 1;
stmt_res = (stmt_handle *) stmt->driver_data;
col_res = &stmt_res->columns[colno];
col = &stmt->columns[colno];
switch (col_res->data_type) {
#ifndef PASE
case SQL_LONGVARBINARY:
case SQL_VARBINARY:
case SQL_BINARY:
#endif
case SQL_BLOB:
case SQL_CLOB:
#ifdef PASE /* i5 DBCLOB locator */
case SQL_DBCLOB:
#else
case SQL_XML:
#endif /* PASE */
{
/* we're going to need to do getdata calls to retrieve these */
col_res->out_length = 0;
/* and this is returned as a stream */
col_res->returned_type = PDO_PARAM_LOB;
col->param_type = PDO_PARAM_LOB;
col_res->lob_loc = 0;
if(col_res->data_type == SQL_CLOB) {
col_res->loc_type = SQL_CLOB_LOCATOR;
#ifdef PASE /* i5 DBCLOB locator */
} else if(col_res->data_type == SQL_DBCLOB) {
col_res->loc_type = SQL_DBCLOB_LOCATOR;
#endif /* PASE */
} else {
col_res->loc_type = SQL_C_CHAR;
}
col_res->loc_ind = 0;
col_res->lob_data_length = 0;
col_res->lob_data_offset = 0;
col_res->lob_data = NULL;
rc = SQLBindCol( (SQLHSTMT) stmt_res->hstmt,
(SQLUSMALLINT) (colno + 1),
col_res->loc_type,
&col_res->lob_loc,
4,
&col_res->loc_ind);
}
break;
/*
* A form we need to force into a string value...
* this includes any unknown types
*/
#ifdef PASE
case SQL_VARBINARY:
case SQL_BINARY:
case SQL_XML:
#endif
#ifdef PASE /* i5/OS incompatible v6r1 change */
case SQL_VARBINARY_V6:
case SQL_BINARY_V6:
#endif /* PASE */
case SQL_LONGVARCHAR:
case SQL_CHAR:
case SQL_VARCHAR:
case SQL_TYPE_TIME:
case SQL_TYPE_TIMESTAMP:
case SQL_BIGINT:
case SQL_REAL:
case SQL_FLOAT:
case SQL_DOUBLE:
case SQL_DECIMAL:
case SQL_NUMERIC:
default:
in_length = (col_res->data_size + in_length) * 2;
col_res->data.str_val = (char *) emalloc(in_length+1);
check_stmt_allocation(col_res->data.str_val,
"stmt_bind_column",
"Unable to allocate column buffer");
col_res->data.str_val[in_length] = '\0';
rc = SQLBindCol((SQLHSTMT) stmt_res->hstmt,
(SQLUSMALLINT) (colno + 1), SQL_C_CHAR,
col_res->data.str_val, in_length,
(SQLINTEGER *) (&col_res->out_length));
col_res->returned_type = PDO_PARAM_STR;
col->param_type = PDO_PARAM_STR;
}
return TRUE;
}
/* allocate a set of internal column descriptors for a statement. */
static int stmt_allocate_column_descriptors(pdo_stmt_t *stmt TSRMLS_DC)
{
stmt_handle *stmt_res = (stmt_handle *) stmt->driver_data;
SQLSMALLINT nResultCols = 0;
/* not sure */
int rc = SQLNumResultCols((SQLHSTMT) stmt_res->hstmt, &nResultCols);
check_stmt_error(rc, "SQLNumResultCols");
/*
* Make sure we set the count in the PDO stmt structure so the driver
* knows how many columns we're dealing with.
*/
stmt->column_count = nResultCols;
/*
* Allocate the column descriptors now. We'll bind each column
* individually before the first fetch. The binding process will
* allocate any additional buffers we might need for the data.
*/
stmt_res->columns = (column_data *) ecalloc(sizeof(column_data), stmt->column_count);
check_stmt_allocation(stmt_res->columns, "stmt_allocate_column_descriptors",
"Unable to allocate column descriptor tables");
memset(stmt_res->columns, '\0', sizeof(column_data) * stmt->column_count);
return TRUE;
}
/*
* This is also used for error cleanup for errors that occur while
* the stmt is still half constructed.
*/
int ibm_stmt_dtor( pdo_stmt_t *stmt TSRMLS_DC)
{
stmt_handle *stmt_res = (stmt_handle *) stmt->driver_data;
if (stmt_res != NULL) {
if (stmt_res->hstmt != SQL_NULL_HANDLE) {
/* if we've done some work, we need to clean up. */
if (stmt->executed) {
/* cancel anything we have pending at this point */
SQLCancel(stmt_res->hstmt);
}
SQLFreeHandle(SQL_HANDLE_STMT, stmt_res->hstmt);
stmt_res->hstmt = SQL_NULL_HANDLE;
}
/* release any control blocks we have attached to this statement */
stmt_cleanup(stmt TSRMLS_CC);
}
return TRUE;
}
/*
* Execute a PDOStatement. Used for both the PDOStatement::execute() method
* as well as the PDO:query() method.
*/
static int ibm_stmt_executer( pdo_stmt_t * stmt TSRMLS_DC)
{
stmt_handle *stmt_res = (stmt_handle *) stmt->driver_data;
int rc = 0;
SQLINTEGER rowCount;
/*
* If this statement has already been executed, then we need to
* cancel the previous execution before doing this again.
*/
if (stmt->executed) {
rc = SQLFreeStmt(stmt_res->hstmt, SQL_CLOSE);
check_stmt_error(rc, "SQLFreeStmt");
}
/*
* We're executing now...this tells error handling to Cancel
* if there's an error.
*/
stmt_res->executing = 1;
/* clear the current error information to get ready for new execute */
clear_stmt_error(stmt);
stmt_res->lob_buffer = NULL;
/*
* Execute the statement. All parameters should be bound at
* this point, but we might need to pump data in for some of
* the parameters.
*/
rc = SQLExecute((SQLHSTMT) stmt_res->hstmt);
check_stmt_error(rc, "SQLExecute");
/*
* Now check if we have indirectly bound parameters. If we do,
* then we need to push the data for those parameters into the
* processing pipe.
*/
if (rc == SQL_NEED_DATA) {
struct pdo_bound_param_data *param;
/*
* Get the associated parameter data. The bind process should have
* stored a pointer to the parameter control block, so we identify
* which one needs data from that.
*/
while ((SQLParamData(stmt_res->hstmt, (SQLPOINTER) & param)) == SQL_NEED_DATA) {
/*
* OK, we have a LOB. This is either in string form, in
* which case we can supply it directly, or is a PHP stream.
* If it is a stream, then the type is IS_RESOURCE, and we
* need to pump the data in a buffer at a time.
*/
#if PHP_MAJOR_VERSION >= 7
zval *parameter;
if (Z_ISREF(param->parameter)) {
parameter = Z_REFVAL(param->parameter);
} else {
parameter = ¶m->parameter;
}
if (Z_TYPE_P(parameter) != IS_RESOURCE) {
convert_to_string(parameter);
rc = SQLPutData(stmt_res->hstmt, Z_STRVAL_P(parameter),
Z_STRLEN_P(parameter));
check_stmt_error(rc, "SQLPutData");
continue;
#else
if (Z_TYPE_P(param->parameter) != IS_RESOURCE) {
convert_to_string(param->parameter);
rc = SQLPutData(stmt_res->hstmt, Z_STRVAL_P(param->parameter),
Z_STRLEN_P(param->parameter));
check_stmt_error(rc, "SQLPutData");
continue;
#endif
} else {
/*
* The LOB is a stream. This better still be good, else we
* can't supply the data.
*/
php_stream *stm = NULL;
int len;
#if PHP_MAJOR_VERSION >= 7
php_stream_from_zval_no_verify(stm, parameter);
#else
php_stream_from_zval_no_verify(stm, &(param->parameter));
#endif
if (!stm) {
RAISE_IBM_STMT_ERROR("HY000", "execute",
"Input parameter LOB is no longer a valid stream");
return FALSE;
}
/* allocate a buffer if we haven't prior to this */
if (stmt_res->lob_buffer == NULL) {
stmt_res->lob_buffer = emalloc(LOB_BUFFER_SIZE);
check_stmt_allocation(stmt_res->lob_buffer,
"stmt_execute", "Unable to allocate parameter data buffer");
}
/* read a buffer at a time and push into the execution pipe. */
for (;;) {
len = php_stream_read(stm, stmt_res->lob_buffer, LOB_BUFFER_SIZE);
if (len == 0) {
break;
}
/* add the buffer */
rc = SQLPutData(stmt_res->hstmt, stmt_res->lob_buffer, len);
check_stmt_error(rc, "SQLPutData");
}
}
}
/* Free any LOB buffer we might have */
if (stmt_res->lob_buffer != NULL) {
efree(stmt_res->lob_buffer);
}
}
else
{
/*
* Now set the rowcount field in the statement. This will be the
* number of rows affected by the SQL statement, not the number of
* rows in the result set.
*/
rc = SQLRowCount(stmt_res->hstmt, &rowCount);
check_stmt_error(rc, "SQLRowCount");
/* store the affected rows information. */
stmt->row_count = rowCount;
/* Is this the first time we've executed this statement? */
if (!stmt->executed) {
if (stmt_allocate_column_descriptors(stmt TSRMLS_CC) == FALSE) {
return FALSE;
}
}
}
/* Set the last serial id inserted */
rc = record_last_insert_id(stmt, stmt->dbh, stmt_res->hstmt TSRMLS_CC);
if( rc == FALSE ) {
return FALSE;
}
/* we can turn off the cleanup flag now */
stmt_res->executing = 0;
return TRUE;
}
/* fetch the next row of the result set. */
static int ibm_stmt_fetcher(
pdo_stmt_t *stmt,
enum pdo_fetch_orientation ori,
long offset
TSRMLS_DC)
{
stmt_handle *stmt_res = (stmt_handle *) stmt->driver_data;
/* by default, we're just fetching the next one */
SQLSMALLINT direction = SQL_FETCH_NEXT;
int rc = 0;
#ifdef PASE /* i5/OS problem with SQL_FETCH out_length */
int i;
for (i = 0; i < stmt->column_count; i++) {
stmt_res->columns[i].out_length = 0;
}
#endif
/* convert the PDO orientation information to the SQL one */
switch (ori) {
case PDO_FETCH_ORI_NEXT:
direction = SQL_FETCH_NEXT;
break;
case PDO_FETCH_ORI_PRIOR:
direction = SQL_FETCH_PRIOR;
break;
case PDO_FETCH_ORI_FIRST:
direction = SQL_FETCH_FIRST;
break;
case PDO_FETCH_ORI_LAST:
direction = SQL_FETCH_LAST;
break;
case PDO_FETCH_ORI_ABS:
direction = SQL_FETCH_ABSOLUTE;
break;
case PDO_FETCH_ORI_REL:
direction = SQL_FETCH_RELATIVE;
break;
}
#ifdef PASE /* i5/OS problem with SQL_FETCH_ABSOLUTE */
if (direction == SQL_FETCH_ABSOLUTE) {
rc = SQLFetchScroll((SQLHSTMT)stmt_res->hstmt, SQL_FETCH_FIRST, (SQLINTEGER)offset);
if (offset > 1 && (rc == SQL_SUCCESS || rc == SQL_SUCCESS_WITH_INFO)) {
rc = SQLFetchScroll((SQLHSTMT)stmt_res->hstmt, SQL_FETCH_RELATIVE, (SQLINTEGER)offset - 1);
}
} else {
rc = SQLFetchScroll((SQLHSTMT)stmt_res->hstmt, direction, (SQLINTEGER)offset);
}
#else
/* go fetch it. */
rc = SQLFetchScroll((SQLHSTMT)stmt_res->hstmt, direction, (SQLINTEGER) offset);
#endif
check_stmt_error(rc, "SQLFetchScroll");
/*
* The fetcher() routine has an overloaded return value.
* A false return can indicate either an error or the end
* of the row data.
*/
if (rc == SQL_NO_DATA) {
/*
* We are scrolling forward, then close the cursor
* to release resources tied up by this statement.
*/
if (stmt_res->cursor_type == PDO_CURSOR_FWDONLY) {
SQLCloseCursor(stmt_res->hstmt);
}
return FALSE;
} else if (rc == SQL_ERROR) {
return FALSE;
}
return TRUE;
}
/* process the various bound parameter events. */
static int ibm_stmt_param_hook(
pdo_stmt_t *stmt,
struct pdo_bound_param_data *param,
enum pdo_param_event event_type
TSRMLS_DC)
{
/*
* We get called for both parameters and bound columns.
* We only need to process the parameters
*/
if (param->is_param) {
switch (event_type) {
case PDO_PARAM_EVT_ALLOC:
break;
case PDO_PARAM_EVT_FREE:
/*
* During the alloc event, we attached some driver
* specific data. We need to free this now.
*/
if (param->driver_data != NULL) {
efree(param->driver_data);
param->driver_data = NULL;
}
break;
case PDO_PARAM_EVT_EXEC_PRE:
/* we're allocating a bound parameter, go do the binding */
if (stmt_bind_parameter(stmt, param TSRMLS_CC) == TRUE) {
return stmt_parameter_pre_execute(stmt, param TSRMLS_CC);
} else {
return FALSE;
}
case PDO_PARAM_EVT_EXEC_POST:
return stmt_parameter_post_execute(stmt, param TSRMLS_CC);
/* parameters aren't processed at the fetch phase. */
case PDO_PARAM_EVT_FETCH_PRE:
case PDO_PARAM_EVT_FETCH_POST:
break;
}
} else {
switch (event_type) {
case PDO_PARAM_EVT_ALLOC:
break;
case PDO_PARAM_EVT_FREE:
break;
case PDO_PARAM_EVT_EXEC_PRE:
break;
case PDO_PARAM_EVT_EXEC_POST:
break;
case PDO_PARAM_EVT_FETCH_PRE:
if (param->param_type == PDO_PARAM_LOB) {
(&((stmt_handle *) stmt->driver_data)->
columns[param->paramno])->returned_type = PDO_PARAM_LOB;
}
break;
case PDO_PARAM_EVT_FETCH_POST:
break;
}
}
return TRUE;
}
/* describe a column for the PDO driver. */
static int ibm_stmt_describer(
pdo_stmt_t *stmt,
int colno
TSRMLS_DC)
{
stmt_handle *stmt_res = (stmt_handle *)stmt->driver_data;
/* access the information for this column */
column_data *col_res = &stmt_res->columns[colno];
struct pdo_column_data *col = NULL;
char tmp_name[BUFSIZ];
/* get the column descriptor information */
int rc = SQLDescribeCol((SQLHSTMT)stmt_res->hstmt, (SQLSMALLINT)(colno + 1 ),
tmp_name, BUFSIZ, &col_res->namelen, &col_res->data_type, &col_res->data_size,
&col_res->scale, &col_res->nullable);
check_stmt_error(rc, "SQLDescribeCol");
#ifndef PASE
rc = SQLColAttribute(stmt_res->hstmt, colno+1, SQL_DESC_DISPLAY_SIZE,
NULL, 0, NULL, &col_res->data_size);
check_stmt_error(rc, "SQLColAttribute");
#else
rc = SQLColAttributes((SQLHSTMT)stmt_res->hstmt,(SQLSMALLINT)colno+1,SQL_DESC_DISPLAY_SIZE,
NULL,0,NULL,&col_res->data_size);
check_stmt_error(rc, "SQLColAttributes");
#endif
#ifdef PASE /* i5/OS size changes for "common" converts to string */
switch (col_res->data_type) {
/* BIGINT 9223372036854775807 (2^63-1) string convert */
case SQL_BIGINT:
case SQL_SMALLINT:
case SQL_INTEGER:
case SQL_REAL:
case SQL_FLOAT:
case SQL_DOUBLE:
col_res->data_size = 20;
break;
default:
break;
}
#endif /* PASE */
/*
* Make sure we get a name properly. If the name is too long for our
* buffer (which in theory should never happen), allocate a longer one
* and ask for the information again.
*/
if (col_res->namelen <= 0) {
col_res->name = estrdup("");
check_stmt_allocation(col_res->name, "ibm_stmt_describer",
"Unable to allocate column name");
} else if (col_res->namelen >= BUFSIZ ) {
/* column name is longer than BUFSIZ */
col_res->name = emalloc(col_res->namelen + 1);
check_stmt_allocation(col_res->name, "ibm_stmt_describer", "Unable to allocate column name");
rc = SQLDescribeCol((SQLHSTMT)stmt_res->hstmt, (SQLSMALLINT)(colno + 1 ), col_res->name,
BUFSIZ, &col_res->namelen, &col_res->data_type, &col_res->data_size, &col_res->scale,
&col_res->nullable);
check_stmt_error(rc, "SQLDescribeCol");
} else {
#if PHP_MAJOR_VERSION >= 7
// col_res->name = estrdup(tmp_name);
col_res->name = zend_string_init(tmp_name, strlen(tmp_name), 0);
#else
col_res->name = estrdup(tmp_name);
#endif
check_stmt_allocation(col_res->name, "ibm_stmt_describer", "Unable to allocate column name");
}
col = &stmt->columns[colno];
/*
* Copy the information back into the PDO control block. Note that
* PDO will release the name information, so we don't have to.
*/
col->name = col_res->name;
#if PHP_MAJOR_VERSION < 7
col->namelen = col_res->namelen;
#endif
col->maxlen = col_res->data_size;
col->precision = col_res->scale;
/* bind the columns */
stmt_bind_column(stmt, colno TSRMLS_CC);
return TRUE;
}
/*
* Fetch the data for a specific column. This should be sitting in our
* allocated buffer already, and easy to return.
*/
static int ibm_stmt_get_col(
pdo_stmt_t *stmt,
int colno,
char **ptr,
unsigned long *len,
int *caller_frees
TSRMLS_DC)
{
stmt_handle *stmt_res = (stmt_handle *) stmt->driver_data;
/* access our look aside data */
column_data *col_res = &stmt_res->columns[colno];
if (col_res->returned_type == PDO_PARAM_LOB) {
php_stream *stream = create_lob_stream(stmt, stmt_res, colno TSRMLS_CC); /* already opened */
if (stream != NULL) {
*ptr = (char *) stream;
} else {
*ptr = NULL;
}
*len = 0;
}
/* see if this is a null value */
else if (col_res->out_length == SQL_NULL_DATA) {
/* return this as a real null */
*ptr = NULL;
*len = 0;
}
/* see if length is SQL_NTS ("count the length yourself"-value) */
else if (col_res->out_length == SQL_NTS) {
if (col_res->data.str_val && col_res->data.str_val[0] != '\0') {
/* it's not an empty string */
*ptr = col_res->data.str_val;
*len = strlen(col_res->data.str_val);
} else if (col_res->data.str_val && col_res->data.str_val[0] == '\0') {
/* it's an empty string */
*ptr = col_res->data.str_val;
*len = 0;
} else {
/* it's NULL */
*ptr = NULL;
*len = 0;
}
}
/* string type...very common */
else if (col_res->returned_type == PDO_PARAM_STR) {
/* set the info */
*ptr = col_res->data.str_val;
*len = col_res->out_length;
} else {
/* binary numeric form */
*ptr = (char *) &col_res->data.l_val;
*len = col_res->out_length;
}
return TRUE;
}
/* step to the next result set of the query. */
static int ibm_stmt_next_rowset(
pdo_stmt_t *stmt
TSRMLS_DC)
{
stmt_handle *stmt_res = (stmt_handle *) stmt->driver_data;
/*
* Now get the next result set. This has the side effect
* of cleaning up the current cursor, if it exists.
*/
int rc = SQLMoreResults(stmt_res->hstmt);
/*
* We don't raise errors here. A success return codes
* signals we have more result sets to process, so we
* set everything up to read that info. Otherwise, we just
* signal the main driver we're finished.
*/
if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
return FALSE;
}
/*
* The next result set may have different column information, so
* we need to clear out our existing set.
*/
stmt_free_column_descriptors(stmt TSRMLS_CC);
/* Now allocate a new set of column descriptors */
if (stmt_allocate_column_descriptors(stmt TSRMLS_CC) == FALSE) {
return FALSE;
}
/* more results to process */
return TRUE;
}
/*
* Return all of the meta data information that makes sense for
* this database driver.
*/
static int ibm_stmt_get_column_meta(
pdo_stmt_t *stmt,
long colno,
zval *return_value
TSRMLS_DC)
{
stmt_handle *stmt_res = NULL;
column_data *col_res = NULL;
#define ATTRIBUTEBUFFERSIZE 256
char attribute_buffer[ATTRIBUTEBUFFERSIZE];
#ifdef PASE /* i5/OS SQLColAttributes not small int */
SQLINTEGER length;
#else
SQLSMALLINT length;
#endif
SQLINTEGER numericAttribute;
#if PHP_MAJOR_VERSION >= 7
zval flags;
#else
zval *flags;
#endif
if (colno >= stmt->column_count) {
RAISE_IBM_STMT_ERROR("HY097", "getColumnMeta",
"Column number out of range");
return FAILURE;
}
stmt_res = (stmt_handle *) stmt->driver_data;
/* access our look aside data */
if (stmt_res->columns == NULL) {
return FAILURE;
}
col_res = &stmt_res->columns[colno];
/* make sure the return value is initialized as an array. */
array_init(return_value);
add_assoc_long(return_value, "scale", col_res->scale);
/* see if we can retrieve the table name */
#ifndef PASE
if (SQLColAttribute (stmt_res->hstmt, colno + 1, SQL_DESC_BASE_TABLE_NAME,
(SQLPOINTER) attribute_buffer, ATTRIBUTEBUFFERSIZE, &length,
(SQLPOINTER) & numericAttribute) != SQL_ERROR) {
/*
* Most of the time, this seems to return a null string. only
* return this if we have something real.
*/
if (length > 0) {
#if PHP_MAJOR_VERSION >= 7
add_assoc_stringl(return_value, "table", attribute_buffer, length);
#else
add_assoc_stringl(return_value, "table", attribute_buffer, length, 1);
#endif
}
}
#endif
/* see if we can retrieve the type name */
#ifndef PASE
if (SQLColAttribute(stmt_res->hstmt, colno + 1, SQL_DESC_TYPE_NAME,
(SQLPOINTER) attribute_buffer, ATTRIBUTEBUFFERSIZE, &length,
(SQLPOINTER) & numericAttribute) != SQL_ERROR) {
#if PHP_MAJOR_VERSION >= 7
add_assoc_stringl(return_value, "native_type", attribute_buffer, length);
#else
add_assoc_stringl(return_value, "native_type", attribute_buffer, length, 1);
#endif
}
#else
if (SQLColAttributes(stmt_res->hstmt, colno + 1, SQL_DESC_TYPE_NAME,
(SQLPOINTER) attribute_buffer, ATTRIBUTEBUFFERSIZE, (SQLPOINTER)&length,
(SQLPOINTER) & numericAttribute) != SQL_ERROR) {
#if PHP_MAJOR_VERSION >= 7
add_assoc_stringl(return_value, "native_type", attribute_buffer, length);
#else
add_assoc_stringl(return_value, "native_type", attribute_buffer, length, 1);
#endif
}
#endif
#if PHP_MAJOR_VERSION >= 7
array_init(&flags);
add_assoc_bool(&flags, "not_null", !col_res->nullable);
#else
MAKE_STD_ZVAL(flags);
array_init(flags);
add_assoc_bool(flags, "not_null", !col_res->nullable);
#endif
/* see if we can retrieve the unsigned attribute */
#ifndef PASE
if (SQLColAttribute(stmt_res->hstmt, colno + 1, SQL_DESC_UNSIGNED,
(SQLPOINTER) attribute_buffer, ATTRIBUTEBUFFERSIZE, &length,
(SQLPOINTER) & numericAttribute) != SQL_ERROR) {
#if PHP_MAJOR_VERSION >= 7
add_assoc_bool(&flags, "unsigned", numericAttribute == SQL_TRUE);
#else
add_assoc_bool(flags, "unsigned", numericAttribute == SQL_TRUE);
#endif
}
#endif
/* see if we can retrieve the autoincrement attribute */
#ifndef PASE
if (SQLColAttribute (stmt_res->hstmt, colno + 1, SQL_DESC_AUTO_UNIQUE_VALUE,
(SQLPOINTER) attribute_buffer, ATTRIBUTEBUFFERSIZE, &length,
(SQLPOINTER) & numericAttribute) != SQL_ERROR) {
#if PHP_MAJOR_VERSION >= 7
add_assoc_bool(&flags, "auto_increment",
numericAttribute == SQL_TRUE);
#else
add_assoc_bool(flags, "auto_increment",
numericAttribute == SQL_TRUE);
#endif
}
#endif
/* add the flags to the result bundle. */
#if PHP_MAJOR_VERSION >= 7
add_assoc_zval(return_value, "flags", &flags);
#else
add_assoc_zval(return_value, "flags", flags);
#endif
return SUCCESS;
}
#define CURSOR_NAME_BUFFER_LENGTH 256
/* get driver specific attributes. We only support CURSOR_NAME. */
static int ibm_stmt_get_attribute(
pdo_stmt_t *stmt,
long attr,
zval *return_value
TSRMLS_DC)
{
stmt_handle *stmt_res = (stmt_handle *) stmt->driver_data;
/* anything we can't handle is an error */
switch (attr) {
case PDO_ATTR_CURSOR_NAME:
{
char buffer[CURSOR_NAME_BUFFER_LENGTH];
SQLSMALLINT length;
int rc = SQLGetCursorName(stmt_res->hstmt, buffer,
CURSOR_NAME_BUFFER_LENGTH, &length);
check_stmt_error(rc, "SQLGetCursorName");
/* this is a string value */
#if PHP_MAJOR_VERSION >= 7
ZVAL_STRINGL(return_value, buffer, length);
#else
ZVAL_STRINGL(return_value, buffer, length, 1);
#endif
return TRUE;
}
/* unknown attribute */
default:
{
/* raise a driver error, and give the special -1 return. */
RAISE_IBM_STMT_ERROR("IM001", "getAttribute", "Unknown attribute");
return -1;
/* the -1 return does not raise an error immediately. */
}
}
}
/* set a driver-specific attribute. We only support CURSOR_NAME. */
static int ibm_stmt_set_attribute(
pdo_stmt_t *stmt,
long attr,
zval *value
TSRMLS_DC)
{
stmt_handle *stmt_res = (stmt_handle *) stmt->driver_data;
int rc = 0;
switch (attr) {
case PDO_ATTR_CURSOR_NAME:
{
/* we need to force this to a string value */
convert_to_string(value);
/* set the cursor value */
rc = SQLSetCursorName(stmt_res->hstmt, Z_STRVAL_P(value), Z_STRLEN_P(value));
check_stmt_error(rc, "SQLSetCursorName");
return TRUE;
}
default:
{
/* raise a driver error, and give the special -1 return. */
RAISE_IBM_STMT_ERROR("IM001", "getAttribute", "Unknown attribute");
return -1;
/* the -1 return does not raise an error immediately. */
}
}
}
/* This function updates the last_insert_id value of the connection handle,
* when a row with serial type column inserted in IDS.
*/
int record_last_insert_id( pdo_stmt_t * stmt, pdo_dbh_t *dbh, SQLHANDLE hstmt TSRMLS_DC)
{
int rc;
long int returnValue;
conn_handle *conn_res = (conn_handle *) dbh->driver_data;
char id[ MAX_IDENTITY_DIGITS ] = "";
char server[MAX_DBMS_IDENTIFIER_NAME];
rc = SQLGetInfo(conn_res->hdbc, SQL_DBMS_NAME, (SQLPOINTER)server, MAX_DBMS_IDENTIFIER_NAME, NULL);
check_dbh_error(rc, "SQLGetInfo");
if( strncmp( server, "IDS", 3 ) == 0 ) {
rc = SQLGetStmtAttr( (SQLHSTMT)hstmt, SQL_ATTR_GET_GENERATED_VALUE, (SQLPOINTER)id,
MAX_IDENTITY_DIGITS, NULL );
/* If this function is being called from ibm_handle_doer() after direct exec of an
* sql stmt, we have not have a pdo_stmt_t handler for the stmt, and NULL is being passed.
* In this case we do not have to free pdo_stmt_t handler.
*/
if( stmt != NULL ) {
check_stmt_error(rc, "SQLGetStmtAttr");
} else {
if (rc == SQL_ERROR) {
/*
* We raise the error before freeing the handle so that
* we catch the proper error record.
*/
raise_sql_error(dbh, NULL, hstmt, SQL_HANDLE_STMT,
"SQLGetStmtAttr", __FILE__, __LINE__ TSRMLS_CC);
SQLFreeHandle(SQL_HANDLE_STMT, hstmt);
return FALSE;
}
}
returnValue = strtol( id, NULL, 10 );
/* Do not update the last_insert_id value if the insert statement does not have a serial type column
or when queries other than insert is being executed. */
if( returnValue !=0 ) {
conn_res->last_insert_id = returnValue;
}
}
return TRUE;
}
struct pdo_stmt_methods ibm_stmt_methods = {
ibm_stmt_dtor,
ibm_stmt_executer,
ibm_stmt_fetcher,
ibm_stmt_describer,
ibm_stmt_get_col,
ibm_stmt_param_hook,
ibm_stmt_set_attribute,
ibm_stmt_get_attribute,
ibm_stmt_get_column_meta,
ibm_stmt_next_rowset
};
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