SQLLEN
odbc_tds2sql(TDS_STMT * stmt, TDSCOLUMN *curcol, int srctype, TDS_CHAR * src, TDS_UINT srclen, int desttype, TDS_CHAR * dest, SQLULEN destlen,
const struct _drecord *drec_ixd)
{
TDS_INT nDestSybType;
TDS_INT nRetVal = TDS_CONVERT_FAIL;
TDSCONTEXT *context = stmt->dbc->env->tds_ctx;
CONV_RESULT ores;
SQLLEN ret = SQL_NULL_DATA;
int i, cplen;
int binary_conversion = 0;
TDS_CHAR conv_buf[256];
tdsdump_log(TDS_DBG_FUNC, "odbc_tds2sql: src is %d dest = %d\n", srctype, desttype);
assert(desttype != SQL_C_DEFAULT);
if (curcol) {
if (is_blob_col(curcol)) {
if (srctype == SYBLONGBINARY && (
curcol->column_usertype == USER_UNICHAR_TYPE ||
curcol->column_usertype == USER_UNIVARCHAR_TYPE))
srctype = SYBTEXT;
if (curcol->column_type == SYBVARIANT)
srctype = ((TDSVARIANT *) src)->type;
src = ((TDSBLOB *) src)->textvalue;
}
if (is_variable_type(curcol->column_type)) {
src += curcol->column_text_sqlgetdatapos;
srclen -= curcol->column_text_sqlgetdatapos;
}
}
nDestSybType = odbc_c_to_server_type(desttype);
if (!nDestSybType) {
odbc_errs_add(&stmt->errs, "HY003", NULL);
return SQL_NULL_DATA;
}
/* special case for binary type */
if (desttype == SQL_C_BINARY) {
tdsdump_log(TDS_DBG_FUNC, "odbc_tds2sql: outputting binary data destlen = %lu \n", (unsigned long) destlen);
if (is_numeric_type(srctype)) {
desttype = SQL_C_NUMERIC;
nDestSybType = SYBNUMERIC;
/* prevent buffer overflow */
if (destlen < sizeof(SQL_NUMERIC_STRUCT)) {
odbc_errs_add(&stmt->errs, "07006", NULL);
return SQL_NULL_DATA;
}
ores.n.precision = ((TDS_NUMERIC *) src)->precision;
ores.n.scale = ((TDS_NUMERIC *) src)->scale;
} else {
return odbc_convert_to_binary(stmt, curcol, srctype, src, srclen, dest, destlen);
}
} else if (is_numeric_type(nDestSybType)) {
/* TODO use descriptor information (APD) ?? However APD can contain SQL_C_DEFAULT... */
if (drec_ixd)
ores.n.precision = drec_ixd->sql_desc_precision;
else
ores.n.precision = 38;
ores.n.scale = 0;
}
if (is_char_type(srctype)) {
if (desttype == SQL_C_CHAR || desttype == SQL_C_WCHAR)
return odbc_convert_char(stmt, curcol, src, srclen, desttype, dest, destlen);
if (is_unicode_type(srctype)) {
/*
* convert to single and then process normally.
* Here we processed SQL_C_BINARY and SQL_C_*CHAR so only fixed types are left
*/
i = odbc_tds_convert_wide_iso(curcol, src, srclen, conv_buf, sizeof(conv_buf));
if (i < 0)
return SQL_NULL_DATA;
src = conv_buf;
srclen = i;
srctype = SYBVARCHAR;
}
}
if (desttype == SQL_C_WCHAR)
destlen /= sizeof(SQLWCHAR);
if (desttype == SQL_C_CHAR || desttype == SQL_C_WCHAR) {
switch (srctype) {
case SYBLONGBINARY:
case SYBBINARY:
case SYBVARBINARY:
case SYBIMAGE:
case XSYBBINARY:
case XSYBVARBINARY:
binary_conversion = 1;
if (destlen && !(destlen % 2))
--destlen;
}
nDestSybType = TDS_CONVERT_CHAR;
ores.cc.len = destlen;
ores.cc.c = dest;
}
if (desttype == SQL_C_CHAR || desttype == SQL_C_WCHAR) {
char buf[48];
TDSDATEREC when;
int prec = 3;
const char *fmt = NULL;
const TDS_DATETIMEALL *dta = (const TDS_DATETIMEALL *) src;
switch (srctype) {
case SYBMSDATETIMEOFFSET:
case SYBMSDATETIME2: prec = dta->time_prec;
case SYBDATETIME: fmt = "%Y-%m-%d %H:%M:%S.%z"; if (prec) break;
case SYBDATETIME4: fmt = "%Y-%m-%d %H:%M:%S"; break;
case SYBMSTIME:
prec = dta->time_prec;
fmt = prec ? "%H:%M:%S.%z" : "%H:%M:%S";
break;
case SYBMSDATE: fmt = "%Y-%m-%d"; break;
}
if (!fmt) goto normal_conversion;
tds_datecrack(srctype, src, &when);
tds_strftime(buf, sizeof(buf), fmt, &when, prec);
if (srctype == SYBMSDATETIMEOFFSET) {
char sign = '+';
int off = dta->offset;
if (off < 0) {
sign = '-';
off = -off;
}
sprintf(buf + strlen(buf), " %c%02d:%02d", sign, off / 60, off % 60);
}
nRetVal = strlen(buf);
memcpy(dest, buf, destlen < nRetVal ? destlen : nRetVal);
} else {
normal_conversion:
nRetVal = tds_convert(context, srctype, src, srclen, nDestSybType, &ores);
}
if (nRetVal < 0) {
odbc_convert_err_set(&stmt->errs, nRetVal);
return SQL_NULL_DATA;
}
switch (desttype) {
case SQL_C_CHAR:
tdsdump_log(TDS_DBG_FUNC, "odbc_tds2sql: outputting character data destlen = %lu \n", (unsigned long) destlen);
ret = nRetVal;
/* TODO handle not terminated configuration */
if (destlen > 0) {
cplen = (destlen - 1) > nRetVal ? nRetVal : (destlen - 1);
assert(cplen >= 0);
/*
* odbc always terminate but do not overwrite
* destination buffer more than needed
*/
/* update datapos only for binary source (char already handled) */
if (curcol && binary_conversion)
curcol->column_text_sqlgetdatapos += cplen / 2;
dest[cplen] = 0;
} else {
/* if destlen == 0 we return only length */
}
break;
case SQL_C_WCHAR:
tdsdump_log(TDS_DBG_FUNC, "odbc_tds2sql: outputting character data destlen = %lu \n", (unsigned long) destlen);
ret = nRetVal * sizeof(SQLWCHAR);
/* TODO handle not terminated configuration */
if (destlen > 0) {
SQLWCHAR *wp = (SQLWCHAR *) dest;
SQLCHAR *p = (SQLCHAR *) dest;
cplen = (destlen - 1) > nRetVal ? nRetVal : (destlen - 1);
assert(cplen >= 0);
/*
* odbc always terminate but do not overwrite
* destination buffer more than needed
*/
/* update datapos only for binary source (char already handled) */
if (curcol && binary_conversion)
curcol->column_text_sqlgetdatapos += cplen / 2;
/* convert in place and terminate */
wp[cplen] = 0;
while (cplen > 0) {
--cplen;
wp[cplen] = p[cplen];
}
} else {
/* if destlen == 0 we return only length */
}
break;
case SQL_C_TYPE_DATE:
case SQL_C_DATE:
{
TDSDATEREC dr;
DATE_STRUCT *dsp = (DATE_STRUCT *) dest;
/*
* we've already converted the returned value to a SYBMSDATETIME2
* now decompose date into constituent parts...
*/
tds_datecrack(SYBMSDATETIME2, &(ores.dt), &dr);
dsp->year = dr.year;
dsp->month = dr.month + 1;
dsp->day = dr.day;
ret = sizeof(DATE_STRUCT);
}
break;
case SQL_C_TYPE_TIME:
case SQL_C_TIME:
{
TDSDATEREC dr;
TIME_STRUCT *tsp = (TIME_STRUCT *) dest;
/*
* we've already converted the returned value to a SYBMSDATETIME2
* now decompose date into constituent parts...
*/
tds_datecrack(SYBMSDATETIME2, &(ores.dt), &dr);
tsp->hour = dr.hour;
tsp->minute = dr.minute;
tsp->second = dr.second;
ret = sizeof(TIME_STRUCT);
}
break;
case SQL_C_TYPE_TIMESTAMP:
case SQL_C_TIMESTAMP:
{
TDSDATEREC dr;
TIMESTAMP_STRUCT *tssp = (TIMESTAMP_STRUCT *) dest;
/*
* we've already converted the returned value to a SYBMSDATETIME2
* now decompose date into constituent parts...
*/
tds_datecrack(SYBMSDATETIME2, &(ores.dt), &dr);
tssp->year = dr.year;
tssp->month = dr.month + 1;
tssp->day = dr.day;
tssp->hour = dr.hour;
tssp->minute = dr.minute;
tssp->second = dr.second;
tssp->fraction = dr.decimicrosecond * 100u;
ret = sizeof(TIMESTAMP_STRUCT);
}
break;
#ifdef SQL_C_SBIGINT
case SQL_C_SBIGINT:
case SQL_C_UBIGINT:
*((TDS_INT8 *) dest) = ores.bi;
ret = sizeof(TDS_INT8);
break;
#endif
case SQL_C_LONG:
case SQL_C_SLONG:
case SQL_C_ULONG:
*((TDS_INT *) dest) = ores.i;
ret = sizeof(TDS_INT);
break;
case SQL_C_SHORT:
case SQL_C_SSHORT:
case SQL_C_USHORT:
*((TDS_SMALLINT *) dest) = ores.si;
ret = sizeof(TDS_SMALLINT);
break;
case SQL_C_TINYINT:
case SQL_C_STINYINT:
case SQL_C_UTINYINT:
case SQL_C_BIT:
*((TDS_TINYINT *) dest) = ores.ti;
ret = sizeof(TDS_TINYINT);
break;
case SQL_C_DOUBLE:
*((TDS_FLOAT *) dest) = ores.f;
ret = sizeof(TDS_FLOAT);
break;
case SQL_C_FLOAT:
*((TDS_REAL *) dest) = ores.r;
ret = sizeof(TDS_REAL);
break;
case SQL_C_NUMERIC:
{
/* ODBC numeric is quite different from TDS one ... */
SQL_NUMERIC_STRUCT *num = (SQL_NUMERIC_STRUCT *) dest;
num->precision = ores.n.precision;
num->scale = ores.n.scale;
num->sign = ores.n.array[0] ^ 1;
/*
* TODO can be greater than SQL_MAX_NUMERIC_LEN ??
* seeing Sybase manual wire support bigger numeric but currently
* DBs so not support such precision
*/
i = ODBC_MIN(tds_numeric_bytes_per_prec[ores.n.precision] - 1, SQL_MAX_NUMERIC_LEN);
memcpy(num->val, ores.n.array + 1, i);
tds_swap_bytes(num->val, i);
if (i < SQL_MAX_NUMERIC_LEN)
memset(num->val + i, 0, SQL_MAX_NUMERIC_LEN - i);
ret = sizeof(SQL_NUMERIC_STRUCT);
}
break;
#ifdef SQL_C_GUID
case SQL_C_GUID:
memcpy(dest, &(ores.u), sizeof(TDS_UNIQUE));
ret = sizeof(TDS_UNIQUE);
break;
#endif
case SQL_C_BINARY:
/* type already handled */
assert(desttype != SQL_C_BINARY);
default:
break;
}
return ret;
}
/**
* 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;
}
/**
* 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;
}
static SQLLEN
_tdsodbc_dbconvert(TDS_DBC *dbc, int srctype, const TDS_CHAR * src, SQLLEN src_len, int desttype, BYTE * dest, TDSCOLUMN *bindcol)
{
CONV_RESULT dres;
SQLLEN ret;
SQLLEN len;
SQLLEN destlen = bindcol->column_size;
TDS_DATETIMEALL dta;
TDS_NUMERIC num;
SQL_NUMERIC_STRUCT * sql_num;
int always_convert = 0;
assert(src_len >= 0);
assert(src != NULL);
assert(dest != NULL);
assert(destlen > 0);
tdsdump_log(TDS_DBG_FUNC, "tdsodbc_dbconvert(%p, %d, %p, %d, %d, %p, %d)\n",
dbc, srctype, src, (int)src_len, desttype, dest, (int)destlen);
switch (srctype) {
case SYBMSDATETIME2:
convert_datetime2server(SQL_C_TYPE_TIMESTAMP, src, &dta);
dta.time_prec = (destlen - 40) / 2;
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 -1;
len = tds_numeric_bytes_per_prec[num.precision];
memcpy(num.array + 1, sql_num->val, len - 1);
tds_swap_bytes(num.array + 1, len - 1);
if (len < sizeof(num.array))
memset(num.array + len, 0, sizeof(num.array) - len);
src = (char *) #
always_convert = num.scale != bindcol->column_scale;
break;
/* TODO intervals */
}
/* oft times we are asked to convert a data type to itself */
if ((srctype == desttype || is_similar_type(srctype, desttype)) && !always_convert) {
if (is_char_type(desttype)) {
ret = _bcp_iconv_helper(dbc, bindcol, src, src_len, (char *)dest, destlen);
}
else {
ret = destlen < src_len ? destlen : src_len;
memcpy(dest, src, ret);
}
return ret;
}
tdsdump_log(TDS_DBG_INFO1, "dbconvert() calling tds_convert\n");
if (is_numeric_type(desttype)) {
dres.n.precision = bindcol->column_prec;
dres.n.scale = bindcol->column_scale;
}
len = tds_convert(dbc->env->tds_ctx, srctype, src, src_len, desttype, &dres);
tdsdump_log(TDS_DBG_INFO1, "dbconvert() called tds_convert returned %d\n", (int)len);
if (len < 0) {
odbc_convert_err_set(&dbc->errs, len);
return -1;
}
switch (desttype) {
case SYBBINARY:
case SYBVARBINARY:
case SYBIMAGE:
ret = destlen < len ? destlen : len;
memcpy(dest, dres.ib, ret);
free(dres.ib);
break;
case SYBINT1:
case SYBINT2:
case SYBINT4:
case SYBINT8:
case SYBFLT8:
case SYBREAL:
case SYBBIT:
case SYBBITN:
case SYBMONEY:
case SYBMONEY4:
case SYBDATETIME:
case SYBDATETIME4:
case SYBNUMERIC:
case SYBDECIMAL:
case SYBUNIQUE:
case SYBMSDATE:
case SYBMSTIME:
case SYBMSDATETIME2:
case SYBMSDATETIMEOFFSET:
memcpy(dest, &dres, len);
ret = len;
break;
case SYBCHAR:
case SYBVARCHAR:
case SYBTEXT:
ret = _bcp_iconv_helper(dbc, bindcol, dres.c, len, (char *)dest, destlen);
free(dres.c);
break;
default:
tdsdump_log(TDS_DBG_INFO1, "error: dbconvert(): unrecognized desttype %d \n", desttype);
ret = -1;
break;
}
return (ret);
}
