void
odbc_set_return_params(struct _hstmt *stmt)
{
TDSSOCKET *tds = stmt->dbc->tds_socket;
TDSPARAMINFO *info = tds->curr_resinfo;
TDSCONTEXT *context = stmt->dbc->env->tds_ctx;
int i_begin = stmt->prepared_query_is_func ? 1 : 0;
int i;
int nparam = i_begin;
/* I don't understand why but this happen -- freddy77 */
/* TODO check why, put an assert ? */
if (!info)
return;
for (i = 0; i < info->num_cols; ++i) {
struct _drecord *drec_apd, *drec_ipd;
TDSCOLINFO *colinfo = info->columns[i];
TDS_CHAR *src;
int srclen;
SQLINTEGER len;
int c_type;
/* find next output parameter */
for (;;) {
drec_apd = NULL;
/* TODO best way to stop */
if (nparam >= stmt->apd->header.sql_desc_count || nparam >= stmt->ipd->header.sql_desc_count)
return;
drec_apd = &stmt->apd->records[nparam];
drec_ipd = &stmt->ipd->records[nparam];
if (stmt->ipd->records[nparam++].sql_desc_parameter_type != SQL_PARAM_INPUT)
break;
}
/* null parameter ? */
if (tds_get_null(info->current_row, i)) {
/* FIXME error if NULL */
if (drec_apd->sql_desc_indicator_ptr)
*drec_apd->sql_desc_indicator_ptr = SQL_NULL_DATA;
continue;
}
src = (TDS_CHAR *) & info->current_row[colinfo->column_offset];
if (is_blob_type(colinfo->column_type))
src = ((TDSBLOBINFO *) src)->textvalue;
srclen = colinfo->column_cur_size;
c_type = drec_apd->sql_desc_concise_type;
if (c_type == SQL_C_DEFAULT)
c_type = odbc_sql_to_c_type_default(drec_ipd->sql_desc_concise_type);
len = convert_tds2sql(context, tds_get_conversion_type(colinfo->column_type, colinfo->column_size), src, srclen,
c_type, drec_apd->sql_desc_data_ptr, drec_apd->sql_desc_octet_length);
/* TODO error handling */
if (len < 0)
return /* SQL_ERROR */ ;
if (drec_apd->sql_desc_indicator_ptr)
*drec_apd->sql_desc_indicator_ptr = 0;
*drec_apd->sql_desc_octet_length_ptr = len;
}
}
int
continue_parse_prepared_query(struct _hstmt *stmt, SQLPOINTER DataPtr, SQLLEN StrLen_or_Ind)
{
struct _drecord *drec_apd, *drec_ipd;
SQLLEN len;
int need_bytes;
TDSCOLUMN *curcol;
TDSBLOB *blob;
int sql_src_type;
assert(stmt);
tdsdump_log(TDS_DBG_FUNC, "continue_parse_prepared_query with parameter %d\n", stmt->param_num);
if (!stmt->params) {
tdsdump_log(TDS_DBG_FUNC, "error? continue_parse_prepared_query: no parameters provided");
return SQL_ERROR;
}
if (stmt->param_num > stmt->apd->header.sql_desc_count || stmt->param_num > stmt->ipd->header.sql_desc_count)
return SQL_ERROR;
drec_apd = &stmt->apd->records[stmt->param_num - 1];
drec_ipd = &stmt->ipd->records[stmt->param_num - 1];
curcol = stmt->params->columns[stmt->param_num - (stmt->prepared_query_is_func ? 2 : 1)];
blob = NULL;
if (is_blob_col(curcol))
blob = (TDSBLOB *) curcol->column_data;
assert(curcol->column_cur_size <= curcol->column_size);
need_bytes = curcol->column_size - curcol->column_cur_size;
if (DataPtr == NULL) {
switch(StrLen_or_Ind) {
case SQL_NULL_DATA:
case SQL_DEFAULT_PARAM:
break; /* OK */
default:
odbc_errs_add(&stmt->errs, "HY009", NULL); /* Invalid use of null pointer */
return SQL_ERROR;
}
}
/* get C type */
sql_src_type = drec_apd->sql_desc_concise_type;
if (sql_src_type == SQL_C_DEFAULT)
sql_src_type = odbc_sql_to_c_type_default(drec_ipd->sql_desc_concise_type);
switch(StrLen_or_Ind) {
case SQL_NTS:
if (sql_src_type == SQL_C_WCHAR)
len = sqlwcslen((SQLWCHAR *) DataPtr);
else
len = strlen((char *) DataPtr);
break;
case SQL_NULL_DATA:
len = 0;
break;
case SQL_DEFAULT_PARAM:
/* FIXME: use the default if the parameter has one. */
odbc_errs_add(&stmt->errs, "07S01", NULL); /* Invalid use of default parameter */
return SQL_ERROR;
default:
if (DataPtr && StrLen_or_Ind < 0) {
/*
* "The argument DataPtr was not a null pointer, and
* the argument StrLen_or_Ind was less than 0
* but not equal to SQL_NTS or SQL_NULL_DATA."
*/
odbc_errs_add(&stmt->errs, "HY090", NULL);
return SQL_ERROR;
}
len = StrLen_or_Ind;
break;
}
if (!blob && len > need_bytes)
len = need_bytes;
/* copy to destination */
if (blob) {
TDS_CHAR *p;
int binary_convert = 0;
SQLLEN orig_len = len;
if (sql_src_type == SQL_C_CHAR || sql_src_type == SQL_C_WCHAR) {
switch (tds_get_conversion_type(curcol->column_type, curcol->column_size)) {
case SYBBINARY:
case SYBVARBINARY:
case XSYBBINARY:
case XSYBVARBINARY:
case SYBLONGBINARY:
case SYBIMAGE:
if (len && sql_src_type == SQL_C_CHAR && !*((char*)DataPtr+len-1))
--len;
if (sql_src_type == SQL_C_WCHAR)
len /= sizeof(SQLWCHAR);
if (!len)
return SQL_SUCCESS;
binary_convert = 1;
orig_len = len;
len = len / 2u + 1u;
break;
}
}
if (!len)
return SQL_SUCCESS;
if (blob->textvalue)
p = (TDS_CHAR *) realloc(blob->textvalue, len + curcol->column_cur_size);
else {
assert(curcol->column_cur_size == 0);
p = (TDS_CHAR *) malloc(len);
}
if (!p) {
odbc_errs_add(&stmt->errs, "HY001", NULL); /* Memory allocation error */
return SQL_ERROR;
}
blob->textvalue = p;
p += curcol->column_cur_size;
if (binary_convert) {
int res;
len = orig_len;
if (curcol->column_cur_size > 0
&& curcol->column_text_sqlputdatainfo) {
SQLWCHAR data[2];
data[0] = curcol->column_text_sqlputdatainfo;
data[1] = (sql_src_type == SQL_C_CHAR) ? *(unsigned char*)DataPtr : *(SQLWCHAR*)DataPtr;
res = odbc_wchar2hex(p, 1, data, 2);
if (res < 0) {
odbc_convert_err_set(&stmt->errs, res);
return SQL_ERROR;
}
p += res;
DataPtr = (SQLPOINTER) (((char*)DataPtr) +
(sql_src_type == SQL_C_CHAR ? 1 : sizeof(SQLWCHAR)));
--len;
}
if (len&1) {
--len;
curcol->column_text_sqlputdatainfo = (sql_src_type == SQL_C_CHAR) ? ((char*)DataPtr)[len] : ((SQLWCHAR*)DataPtr)[len];
}
res = (sql_src_type == SQL_C_CHAR) ?
tds_char2hex(p, len / 2u, (const TDS_CHAR*) DataPtr, len):
odbc_wchar2hex(p, len / 2u, (const SQLWCHAR*) DataPtr, len);
if (res < 0) {
odbc_convert_err_set(&stmt->errs, res);
return SQL_ERROR;
}
p += res;
len = p - (blob->textvalue + curcol->column_cur_size);
} else {
memcpy(blob->textvalue + curcol->column_cur_size, DataPtr, len);
}
} else {
memcpy(curcol->column_data + curcol->column_cur_size, DataPtr, len);
}
curcol->column_cur_size += len;
if (blob && curcol->column_cur_size > curcol->column_size)
curcol->column_size = curcol->column_cur_size;
return SQL_SUCCESS;
}
/**
* Convert parameters to libtds format
* @return SQL_SUCCESS, SQL_ERROR or SQL_NEED_DATA
*/
SQLRETURN
sql2tds(TDS_STMT * stmt, const struct _drecord *drec_ipd, const struct _drecord *drec_apd, TDSCOLUMN *curcol,
int compute_row, const TDS_DESC* axd, unsigned int n_row)
{
TDS_DBC * dbc = stmt->dbc;
int dest_type, src_type, sql_src_type, res;
CONV_RESULT ores;
TDSBLOB *blob;
char *src;
unsigned char *dest;
int len;
TDS_DATETIME dt;
TDS_NUMERIC num;
SQL_NUMERIC_STRUCT *sql_num;
SQLINTEGER sql_len;
int need_data = 0, i;
/* TODO handle bindings of char like "{d '2002-11-12'}" */
tdsdump_log(TDS_DBG_INFO2, "type=%d\n", drec_ipd->sql_desc_concise_type);
/* what type to convert ? */
dest_type = odbc_sql_to_server_type(dbc->tds_socket, drec_ipd->sql_desc_concise_type);
if (dest_type == TDS_FAIL)
return SQL_ERROR;
tdsdump_log(TDS_DBG_INFO2, "trace\n");
/* TODO what happen for unicode types ?? */
tds_set_param_type(dbc->tds_socket, curcol, dest_type);
if (is_numeric_type(curcol->column_type)) {
curcol->column_prec = drec_ipd->sql_desc_precision;
curcol->column_scale = drec_ipd->sql_desc_scale;
}
if (drec_ipd->sql_desc_parameter_type != SQL_PARAM_INPUT)
curcol->column_output = 1;
/* compute destination length */
if (curcol->column_varint_size != 0) {
/* curcol->column_size = drec_apd->sql_desc_octet_length; */
/*
* TODO destination length should come from sql_desc_length,
* however there is the encoding problem to take into account
* we should fill destination length after conversion keeping
* attention to fill correctly blob/fixed type/variable type
*/
/* TODO location of this test is correct here ?? */
if (dest_type != SYBUNIQUE && dest_type != SYBBITN && !is_fixed_type(dest_type)) {
curcol->column_cur_size = 0;
curcol->column_size = drec_ipd->sql_desc_length;
if (curcol->column_size < 0)
curcol->column_size = 0x7FFFFFFFl;
}
} else if (dest_type != SYBBIT) {
/* TODO only a trick... */
tds_set_param_type(dbc->tds_socket, curcol, tds_get_null_type(dest_type));
}
/* get C type */
sql_src_type = drec_apd->sql_desc_concise_type;
if (sql_src_type == SQL_C_DEFAULT)
sql_src_type = odbc_sql_to_c_type_default(drec_ipd->sql_desc_concise_type);
/* test source type */
/* TODO test intervals */
src_type = odbc_c_to_server_type(sql_src_type);
if (src_type == TDS_FAIL)
return SQL_ERROR;
/* we have no data to convert, just return */
if (!compute_row)
return TDS_SUCCEED;
src = drec_apd->sql_desc_data_ptr;
if (src && n_row) {
SQLLEN len;
if (axd->header.sql_desc_bind_type != SQL_BIND_BY_COLUMN) {
len = axd->header.sql_desc_bind_type;
if (axd->header.sql_desc_bind_offset_ptr)
src += *axd->header.sql_desc_bind_offset_ptr;
} else {
len = odbc_get_octet_len(sql_src_type, drec_apd);
if (len < 0)
/* TODO sure ? what happen to upper layer ?? */
return SQL_ERROR;
}
src += len * n_row;
}
/* if only output assume input is NULL */
if (drec_ipd->sql_desc_parameter_type == SQL_PARAM_OUTPUT) {
sql_len = SQL_NULL_DATA;
} else {
sql_len = odbc_get_param_len(drec_apd, drec_ipd, axd, n_row);
/* special case, MS ODBC handle conversion from "\0" to any to NULL, DBD::ODBC require it */
if (src_type == SYBVARCHAR && sql_len == 1 && drec_ipd->sql_desc_parameter_type == SQL_PARAM_INPUT_OUTPUT
&& src && *src == 0) {
sql_len = SQL_NULL_DATA;
}
}
/* compute source length */
switch (sql_len) {
case SQL_NULL_DATA:
len = 0;
break;
case SQL_NTS:
/* check that SQLBindParameter::ParameterValuePtr is not zero for input parameters */
if (!src) {
odbc_errs_add(&stmt->errs, "HY090", NULL);
return SQL_ERROR;
}
len = strlen(src);
break;
case SQL_DEFAULT_PARAM:
case SQL_DATA_AT_EXEC:
/* TODO */
return SQL_ERROR;
break;
default:
len = sql_len;
if (sql_len < 0) {
/* test for SQL_C_CHAR/SQL_C_BINARY */
switch (sql_src_type) {
case SQL_C_CHAR:
case SQL_C_BINARY:
break;
default:
return SQL_ERROR;
}
len = SQL_LEN_DATA_AT_EXEC(sql_len);
need_data = 1;
/* dynamic length allowed only for BLOB fields */
switch (drec_ipd->sql_desc_concise_type) {
case SQL_LONGVARCHAR:
case SQL_LONGVARBINARY:
break;
default:
return SQL_ERROR;
}
}
}
/* allocate given space */
if (!tds_alloc_param_data(curcol))
return SQL_ERROR;
if (need_data) {
curcol->column_cur_size = 0;
return SQL_NEED_DATA;
}
/* set null */
assert(drec_ipd->sql_desc_parameter_type != SQL_PARAM_OUTPUT || sql_len == SQL_NULL_DATA);
if (sql_len == SQL_NULL_DATA) {
curcol->column_cur_size = -1;
return TDS_SUCCEED;
}
if (!src) {
odbc_errs_add(&stmt->errs, "HY090", NULL);
return SQL_ERROR;
}
/* convert special parameters (not libTDS compatible) */
switch (src_type) {
case SYBDATETIME:
convert_datetime2server(drec_apd->sql_desc_concise_type, src, &dt);
src = (char *) &dt;
break;
case SYBDECIMAL:
case SYBNUMERIC:
sql_num = (SQL_NUMERIC_STRUCT *) src;
num.precision = sql_num->precision;
num.scale = sql_num->scale;
num.array[0] = sql_num->sign ^ 1;
/* test precision so client do not crash our library */
if (num.precision <= 0 || num.precision > 38 || num.scale > num.precision)
/* TODO add proper error */
return SQL_ERROR;
i = tds_numeric_bytes_per_prec[num.precision];
memcpy(num.array + 1, sql_num->val, i - 1);
tds_swap_bytes(num.array + 1, i - 1);
if (i < sizeof(num.array))
memset(num.array + i, 0, sizeof(num.array) - i);
src = (char *) #
break;
/* TODO intervals */
}
dest = curcol->column_data;
switch ((TDS_SERVER_TYPE) dest_type) {
case SYBCHAR:
case SYBVARCHAR:
case XSYBCHAR:
case XSYBVARCHAR:
ores.cc.c = (TDS_CHAR*) dest;
ores.cc.len = curcol->column_size;
res = tds_convert(dbc->env->tds_ctx, src_type, src, len, TDS_CONVERT_CHAR, &ores);
if (res > curcol->column_size)
res = curcol->column_size;
break;
case SYBBINARY:
case SYBVARBINARY:
case XSYBBINARY:
case XSYBVARBINARY:
ores.cb.ib = (TDS_CHAR*) dest;
ores.cb.len = curcol->column_size;
res = tds_convert(dbc->env->tds_ctx, src_type, src, len, TDS_CONVERT_BINARY, &ores);
if (res > curcol->column_size)
res = curcol->column_size;
break;
case SYBTEXT:
case SYBLONGBINARY:
case SYBIMAGE:
res = tds_convert(dbc->env->tds_ctx, src_type, src, len, dest_type, &ores);
if (res < 0)
return SQL_ERROR;
blob = (TDSBLOB *) dest;
free(blob->textvalue);
blob->textvalue = ores.ib;
break;
case SYBNUMERIC:
case SYBDECIMAL:
((TDS_NUMERIC *) dest)->precision = drec_ipd->sql_desc_precision;
((TDS_NUMERIC *) dest)->scale = drec_ipd->sql_desc_scale;
case SYBINTN:
case SYBINT1:
case SYBINT2:
case SYBINT4:
case SYBINT8:
case SYBFLT8:
case SYBDATETIME:
case SYBBIT:
case SYBMONEY4:
case SYBMONEY:
case SYBDATETIME4:
case SYBREAL:
case SYBBITN:
case SYBFLTN:
case SYBMONEYN:
case SYBDATETIMN:
case SYBSINT1:
case SYBUINT2:
case SYBUINT4:
case SYBUINT8:
case SYBUNIQUE:
res = tds_convert(dbc->env->tds_ctx, src_type, src, len, dest_type, (CONV_RESULT*) dest);
break;
default:
case XSYBNVARCHAR:
case XSYBNCHAR:
case SYBNVARCHAR:
case SYBNTEXT:
case SYBVOID:
case SYBVARIANT:
/* TODO ODBC 3.5 */
assert(0);
res = -1;
break;
}
if (res < 0)
return SQL_ERROR;
curcol->column_cur_size = res;
return SQL_SUCCESS;
}
/**
* Convert parameters to libtds format
* @return SQL_SUCCESS, SQL_ERROR or SQL_NEED_DATA
*/
SQLRETURN
sql2tds(TDS_DBC * dbc, struct _drecord *drec_ipd, struct _drecord *drec_apd, TDSPARAMINFO * info, int nparam)
{
int dest_type, src_type, res;
CONV_RESULT ores;
TDSBLOBINFO *blob_info;
char *src;
unsigned char *dest;
TDSCOLINFO *curcol = info->columns[nparam];
int len;
TDS_DATETIME dt;
TDS_NUMERIC num;
SQL_NUMERIC_STRUCT *sql_num;
SQLINTEGER sql_len;
int need_data = 0, i;
/* TODO handle bindings of char like "{d '2002-11-12'}" */
tdsdump_log(TDS_DBG_INFO2, "%s:%d type=%d\n", __FILE__, __LINE__, drec_ipd->sql_desc_concise_type);
/* what type to convert ? */
dest_type = odbc_sql_to_server_type(dbc->tds_socket, drec_ipd->sql_desc_concise_type);
if (dest_type == TDS_FAIL)
return SQL_ERROR;
tdsdump_log(TDS_DBG_INFO2, "%s:%d\n", __FILE__, __LINE__);
/* TODO what happen for unicode types ?? */
tds_set_param_type(dbc->tds_socket, curcol, dest_type);
if (is_numeric_type(curcol->column_type)) {
curcol->column_prec = drec_ipd->sql_desc_precision;
curcol->column_scale = drec_ipd->sql_desc_scale;
}
if (drec_ipd->sql_desc_parameter_type != SQL_PARAM_INPUT)
curcol->column_output = 1;
/* compute destination length */
if (curcol->column_varint_size != 0) {
/* curcol->column_size = drec_apd->sql_desc_octet_length; */
/*
* TODO destination length should come from sql_desc_length,
* however there is the encoding problem to take into account
* we should fill destination length after conversion keeping
* attention to fill correctly blob/fixed type/variable type
*/
curcol->column_cur_size = 0;
curcol->column_size = drec_ipd->sql_desc_length;
if (curcol->column_size < 0)
curcol->column_size = 0x7FFFFFFFl;
} else {
/* TODO only a trick... */
if (curcol->column_varint_size == 0)
tds_set_param_type(dbc->tds_socket, curcol, tds_get_null_type(dest_type));
}
/* get C type */
src_type = drec_apd->sql_desc_concise_type;
if (src_type == SQL_C_DEFAULT)
src_type = odbc_sql_to_c_type_default(drec_ipd->sql_desc_concise_type);
/* if only output assume input is NULL */
if (drec_ipd->sql_desc_parameter_type == SQL_PARAM_OUTPUT)
sql_len = SQL_NULL_DATA;
else
sql_len = odbc_get_param_len(dbc->tds_socket, drec_apd, drec_ipd);
/* compute source length */
switch (sql_len) {
case SQL_NULL_DATA:
len = 0;
break;
case SQL_NTS:
len = strlen(drec_apd->sql_desc_data_ptr);
break;
case SQL_DEFAULT_PARAM:
case SQL_DATA_AT_EXEC:
/* TODO */
return SQL_ERROR;
break;
default:
len = sql_len;
if (sql_len < 0) {
/* test for SQL_C_CHAR/SQL_C_BINARY */
switch (src_type) {
case SQL_C_CHAR:
case SQL_C_BINARY:
break;
default:
return SQL_ERROR;
}
len = SQL_LEN_DATA_AT_EXEC(sql_len);
need_data = 1;
/* other trick, set length of destination */
switch (odbc_sql_to_c_type_default(drec_ipd->sql_desc_concise_type)) {
case SQL_C_CHAR:
case SQL_C_BINARY:
curcol->column_size = len;
break;
}
}
}
/* allocate given space */
if (!tds_alloc_param_row(info, curcol))
return SQL_ERROR;
/* test source type */
/* TODO test intervals */
src_type = odbc_c_to_server_type(src_type);
if (src_type == TDS_FAIL)
return SQL_ERROR;
if (need_data) {
curcol->column_cur_size = 0;
return SQL_NEED_DATA;
}
/* set null */
assert(drec_ipd->sql_desc_parameter_type != SQL_PARAM_OUTPUT || sql_len == SQL_NULL_DATA);
if (sql_len == SQL_NULL_DATA) {
curcol->column_cur_size = 0;
tds_set_null(info->current_row, nparam);
return TDS_SUCCEED;
}
/* convert special parameters (not libTDS compatible) */
src = drec_apd->sql_desc_data_ptr;
switch (src_type) {
case SYBDATETIME:
convert_datetime2server(drec_apd->sql_desc_concise_type, src, &dt);
src = (char *) &dt;
break;
case SYBDECIMAL:
case SYBNUMERIC:
sql_num = (SQL_NUMERIC_STRUCT *) src;
num.precision = sql_num->precision;
num.scale = sql_num->scale;
num.array[0] = sql_num->sign ^ 1;
/* TODO test precision so client do not crash our library ?? */
i = tds_numeric_bytes_per_prec[num.precision];
memcpy(num.array + 1, sql_num->val, i);
tds_swap_bytes(num.array + 1, i);
++i;
if (i < sizeof(num.array))
memset(num.array + i, 0, sizeof(num.array) - i);
src = (char *) #
/* set output */
/* TODO use descriptors informations ?? */
ores.n.precision = 18;
ores.n.scale = 2;
break;
/* TODO intervals */
}
res = tds_convert(dbc->env->tds_ctx, src_type, src, len, dest_type, &ores);
if (res < 0)
return SQL_ERROR;
tdsdump_log(TDS_DBG_INFO2, "%s:%d\n", __FILE__, __LINE__);
/* truncate ?? */
/* TODO what happen for blobs ?? */
if (res > curcol->column_size)
res = curcol->column_size;
curcol->column_cur_size = res;
/* free allocated memory */
dest = &info->current_row[curcol->column_offset];
switch ((TDS_SERVER_TYPE) dest_type) {
case SYBCHAR:
case SYBVARCHAR:
case XSYBCHAR:
case XSYBVARCHAR:
memcpy(&info->current_row[curcol->column_offset], ores.c, res);
free(ores.c);
break;
case SYBTEXT:
blob_info = (TDSBLOBINFO *) dest;
if (blob_info->textvalue)
free(blob_info->textvalue);
blob_info->textvalue = ores.c;
break;
case SYBBINARY:
case SYBVARBINARY:
case XSYBBINARY:
case XSYBVARBINARY:
memcpy(&info->current_row[curcol->column_offset], ores.ib, res);
free(ores.ib);
break;
case SYBLONGBINARY:
case SYBIMAGE:
blob_info = (TDSBLOBINFO *) dest;
if (blob_info->textvalue)
free(blob_info->textvalue);
blob_info->textvalue = ores.ib;
break;
case SYBINTN:
case SYBINT1:
case SYBINT2:
case SYBINT4:
case SYBINT8:
case SYBFLT8:
case SYBDATETIME:
case SYBBIT:
case SYBMONEY4:
case SYBMONEY:
case SYBDATETIME4:
case SYBREAL:
case SYBBITN:
case SYBNUMERIC:
case SYBDECIMAL:
case SYBFLTN:
case SYBMONEYN:
case SYBDATETIMN:
case SYBSINT1:
case SYBUINT2:
case SYBUINT4:
case SYBUINT8:
case SYBUNIQUE:
memcpy(&info->current_row[curcol->column_offset], &ores, res);
break;
case XSYBNVARCHAR:
case XSYBNCHAR:
case SYBNVARCHAR:
case SYBNTEXT:
case SYBVOID:
case SYBVARIANT:
/* TODO ODBC 3.5 */
assert(0);
break;
}
return SQL_SUCCESS;
}
/**
* Convert parameters to libtds format
* @return SQL_SUCCESS, SQL_ERROR or SQL_NEED_DATA
*/
SQLRETURN
odbc_sql2tds(TDS_STMT * stmt, const struct _drecord *drec_ipd, const struct _drecord *drec_apd, TDSCOLUMN *curcol,
int compute_row, const TDS_DESC* axd, unsigned int n_row)
{
TDS_DBC * dbc = stmt->dbc;
TDSCONNECTION * conn = dbc->tds_socket->conn;
int dest_type, src_type, sql_src_type, res;
CONV_RESULT ores;
TDSBLOB *blob;
char *src, *converted_src;
unsigned char *dest;
int len;
TDS_DATETIMEALL dta;
TDS_NUMERIC num;
SQL_NUMERIC_STRUCT *sql_num;
SQLINTEGER sql_len;
int need_data = 0, i;
/* TODO handle bindings of char like "{d '2002-11-12'}" */
tdsdump_log(TDS_DBG_INFO2, "type=%d\n", drec_ipd->sql_desc_concise_type);
/* what type to convert ? */
dest_type = odbc_sql_to_server_type(conn, drec_ipd->sql_desc_concise_type, drec_ipd->sql_desc_unsigned);
if (!dest_type) {
odbc_errs_add(&stmt->errs, "07006", NULL); /* Restricted data type attribute violation */
return SQL_ERROR;
}
tdsdump_log(TDS_DBG_INFO2, "trace\n");
/* get C type */
sql_src_type = drec_apd->sql_desc_concise_type;
if (sql_src_type == SQL_C_DEFAULT)
sql_src_type = odbc_sql_to_c_type_default(drec_ipd->sql_desc_concise_type);
/* TODO what happen for unicode types ?? */
if (is_char_type(dest_type) && sql_src_type == SQL_C_WCHAR) {
TDSICONV *conv = conn->char_convs[is_unicode_type(dest_type) ? client2ucs2 : client2server_chardata];
tds_set_param_type(conn, curcol, dest_type);
curcol->char_conv = tds_iconv_get(conn, odbc_get_wide_name(conn), conv->to.charset.name);
memcpy(curcol->column_collation, conn->collation, sizeof(conn->collation));
} else {
#ifdef ENABLE_ODBC_WIDE
TDSICONV *conv = conn->char_convs[is_unicode_type(dest_type) ? client2ucs2 : client2server_chardata];
tds_set_param_type(conn, curcol, dest_type);
/* use binary format for binary to char */
if (is_char_type(dest_type))
curcol->char_conv = sql_src_type == SQL_C_BINARY ? NULL : tds_iconv_get(conn, tds_dstr_cstr(&dbc->original_charset), conv->to.charset.name);
#else
tds_set_param_type(conn, curcol, dest_type);
/* use binary format for binary to char */
if (sql_src_type == SQL_C_BINARY && is_char_type(dest_type))
curcol->char_conv = NULL;
#endif
}
if (is_numeric_type(curcol->column_type)) {
curcol->column_prec = drec_ipd->sql_desc_precision;
curcol->column_scale = drec_ipd->sql_desc_scale;
}
if (drec_ipd->sql_desc_parameter_type != SQL_PARAM_INPUT)
curcol->column_output = 1;
/* compute destination length */
if (curcol->column_varint_size != 0) {
/* curcol->column_size = drec_apd->sql_desc_octet_length; */
/*
* TODO destination length should come from sql_desc_length,
* however there is the encoding problem to take into account
* we should fill destination length after conversion keeping
* attention to fill correctly blob/fixed type/variable type
*/
/* TODO location of this test is correct here ?? */
if (dest_type != SYBUNIQUE && dest_type != SYBBITN && !is_fixed_type(dest_type)) {
curcol->column_cur_size = 0;
curcol->column_size = drec_ipd->sql_desc_length;
if (curcol->column_size < 0) {
curcol->on_server.column_size = curcol->column_size = 0x7FFFFFFFl;
} else {
if (is_unicode_type(dest_type))
curcol->on_server.column_size = curcol->column_size * 2;
else
curcol->on_server.column_size = curcol->column_size;
}
}
} else if (dest_type != SYBBIT) {
/* TODO only a trick... */
tds_set_param_type(conn, curcol, tds_get_null_type(dest_type));
}
/* test source type */
/* TODO test intervals */
src_type = odbc_c_to_server_type(sql_src_type);
if (!src_type) {
odbc_errs_add(&stmt->errs, "07006", NULL); /* Restricted data type attribute violation */
return SQL_ERROR;
}
/* we have no data to convert, just return */
if (!compute_row)
return SQL_SUCCESS;
src = drec_apd->sql_desc_data_ptr;
if (src && n_row) {
SQLLEN len;
if (axd->header.sql_desc_bind_type != SQL_BIND_BY_COLUMN) {
len = axd->header.sql_desc_bind_type;
if (axd->header.sql_desc_bind_offset_ptr)
src += *axd->header.sql_desc_bind_offset_ptr;
} else {
len = odbc_get_octet_len(sql_src_type, drec_apd);
if (len < 0)
/* TODO sure ? what happen to upper layer ?? */
/* TODO fill error */
return SQL_ERROR;
}
src += len * n_row;
}
/* if only output assume input is NULL */
if (drec_ipd->sql_desc_parameter_type == SQL_PARAM_OUTPUT) {
sql_len = SQL_NULL_DATA;
} else {
sql_len = odbc_get_param_len(drec_apd, drec_ipd, axd, n_row);
/* special case, MS ODBC handle conversion from "\0" to any to NULL, DBD::ODBC require it */
if (src_type == SYBVARCHAR && sql_len == 1 && drec_ipd->sql_desc_parameter_type == SQL_PARAM_INPUT_OUTPUT
&& src && *src == 0) {
sql_len = SQL_NULL_DATA;
}
}
/* compute source length */
switch (sql_len) {
case SQL_NULL_DATA:
len = 0;
break;
case SQL_NTS:
/* check that SQLBindParameter::ParameterValuePtr is not zero for input parameters */
if (!src) {
odbc_errs_add(&stmt->errs, "HY090", NULL);
return SQL_ERROR;
}
if (sql_src_type == SQL_C_WCHAR)
len = sqlwcslen((const SQLWCHAR *) src) * sizeof(SQLWCHAR);
else
len = strlen(src);
break;
case SQL_DEFAULT_PARAM:
odbc_errs_add(&stmt->errs, "07S01", NULL); /* Invalid use of default parameter */
return SQL_ERROR;
break;
case SQL_DATA_AT_EXEC:
default:
len = sql_len;
if (sql_len < 0) {
/* test for SQL_C_CHAR/SQL_C_BINARY */
switch (sql_src_type) {
case SQL_C_CHAR:
case SQL_C_WCHAR:
case SQL_C_BINARY:
break;
default:
odbc_errs_add(&stmt->errs, "HY090", NULL);
return SQL_ERROR;
}
len = SQL_LEN_DATA_AT_EXEC(sql_len);
need_data = 1;
/* dynamic length allowed only for BLOB fields */
switch (drec_ipd->sql_desc_concise_type) {
case SQL_LONGVARCHAR:
case SQL_WLONGVARCHAR:
case SQL_LONGVARBINARY:
break;
default:
odbc_errs_add(&stmt->errs, "HY090", NULL);
return SQL_ERROR;
}
}
}
/* set NULL. For NULLs we don't need to allocate row buffer so avoid it */
if (!need_data) {
assert(drec_ipd->sql_desc_parameter_type != SQL_PARAM_OUTPUT || sql_len == SQL_NULL_DATA);
if (sql_len == SQL_NULL_DATA) {
curcol->column_cur_size = -1;
return SQL_SUCCESS;
}
}
switch (dest_type) {
case SYBCHAR:
case SYBVARCHAR:
case XSYBCHAR:
case XSYBVARCHAR:
case XSYBNVARCHAR:
case XSYBNCHAR:
case SYBNVARCHAR:
case SYBNTEXT:
case SYBTEXT:
if (!need_data && (sql_src_type == SQL_C_CHAR || sql_src_type == SQL_C_WCHAR || sql_src_type == SQL_C_BINARY)) {
if (curcol->column_data && curcol->column_data_free)
curcol->column_data_free(curcol);
curcol->column_data_free = NULL;
if (is_blob_col(curcol)) {
/* trick to set blob without freeing it, _odbc_blob_free does not free TDSBLOB->textvalue */
TDSBLOB *blob = (TDSBLOB *) calloc(1, sizeof(TDSBLOB));
if (!blob) {
odbc_errs_add(&stmt->errs, "HY001", NULL);
return SQL_ERROR;
}
blob->textvalue = src;
curcol->column_data = (TDS_UCHAR*) blob;
curcol->column_data_free = _odbc_blob_free;
} else {
curcol->column_data = (TDS_UCHAR*) src;
}
curcol->column_size = len;
curcol->column_cur_size = len;
return SQL_SUCCESS;
}
}
/* allocate given space */
if (!tds_alloc_param_data(curcol)) {
odbc_errs_add(&stmt->errs, "HY001", NULL);
return SQL_ERROR;
}
/* fill data with SQLPutData */
if (need_data) {
curcol->column_cur_size = 0;
return SQL_NEED_DATA;
}
if (!src) {
odbc_errs_add(&stmt->errs, "HY090", NULL);
return SQL_ERROR;
}
/* convert special parameters (not libTDS compatible) */
switch (src_type) {
case SYBMSDATETIME2:
convert_datetime2server(drec_apd->sql_desc_concise_type, src, &dta);
src = (char *) &dta;
break;
case SYBDECIMAL:
case SYBNUMERIC:
sql_num = (SQL_NUMERIC_STRUCT *) src;
num.precision = sql_num->precision;
num.scale = sql_num->scale;
num.array[0] = sql_num->sign ^ 1;
/* test precision so client do not crash our library */
if (num.precision <= 0 || num.precision > 38 || num.scale > num.precision)
/* TODO add proper error */
return SQL_ERROR;
i = tds_numeric_bytes_per_prec[num.precision];
memcpy(num.array + 1, sql_num->val, i - 1);
tds_swap_bytes(num.array + 1, i - 1);
if (i < sizeof(num.array))
memset(num.array + i, 0, sizeof(num.array) - i);
src = (char *) #
break;
/* TODO intervals */
}
converted_src = NULL;
if (sql_src_type == SQL_C_WCHAR) {
converted_src = src = odbc_wstr2str(stmt, src, &len);
if (!src)
return SQL_ERROR;
src_type = SYBVARCHAR;
}
dest = curcol->column_data;
switch ((TDS_SERVER_TYPE) dest_type) {
case SYBCHAR:
case SYBVARCHAR:
case XSYBCHAR:
case XSYBVARCHAR:
case XSYBNVARCHAR:
case XSYBNCHAR:
case SYBNVARCHAR:
ores.cc.c = (TDS_CHAR*) dest;
ores.cc.len = curcol->column_size;
res = tds_convert(dbc->env->tds_ctx, src_type, src, len, TDS_CONVERT_CHAR, &ores);
if (res > curcol->column_size)
res = curcol->column_size;
break;
case SYBBINARY:
case SYBVARBINARY:
case XSYBBINARY:
case XSYBVARBINARY:
ores.cb.ib = (TDS_CHAR*) dest;
ores.cb.len = curcol->column_size;
res = tds_convert(dbc->env->tds_ctx, src_type, src, len, TDS_CONVERT_BINARY, &ores);
if (res > curcol->column_size)
res = curcol->column_size;
break;
case SYBNTEXT:
dest_type = SYBTEXT;
case SYBTEXT:
case SYBLONGBINARY:
case SYBIMAGE:
res = tds_convert(dbc->env->tds_ctx, src_type, src, len, dest_type, &ores);
if (res >= 0) {
blob = (TDSBLOB *) dest;
free(blob->textvalue);
blob->textvalue = ores.ib;
}
break;
case SYBNUMERIC:
case SYBDECIMAL:
((TDS_NUMERIC *) dest)->precision = drec_ipd->sql_desc_precision;
((TDS_NUMERIC *) dest)->scale = drec_ipd->sql_desc_scale;
case SYBINTN:
case SYBINT1:
case SYBINT2:
case SYBINT4:
case SYBINT8:
case SYBFLT8:
case SYBDATETIME:
case SYBBIT:
case SYBMONEY4:
case SYBMONEY:
case SYBDATETIME4:
case SYBREAL:
case SYBBITN:
case SYBFLTN:
case SYBMONEYN:
case SYBDATETIMN:
case SYBSINT1:
case SYBUINT2:
case SYBUINT4:
case SYBUINT8:
case SYBUNIQUE:
case SYBMSTIME:
case SYBMSDATE:
case SYBMSDATETIME2:
case SYBMSDATETIMEOFFSET:
res = tds_convert(dbc->env->tds_ctx, src_type, src, len, dest_type, (CONV_RESULT*) dest);
break;
default:
case SYBVOID:
case SYBVARIANT:
/* TODO ODBC 3.5 */
assert(0);
res = -1;
break;
}
free(converted_src);
if (res < 0) {
odbc_convert_err_set(&stmt->errs, res);
return SQL_ERROR;
}
curcol->column_cur_size = res;
return SQL_SUCCESS;
}
