146 lines
4.2 KiB
C++
146 lines
4.2 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#define USING_LOG_PREFIX SQL_ENG
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#include <string.h>
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#include "objit/common/ob_item_type.h"
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#include "sql/engine/expr/ob_expr_int2ip.h"
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//#include "sql/engine/expr/ob_expr_promotion_util.h"
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using namespace oceanbase::common;
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namespace oceanbase
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{
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namespace sql
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{
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ObExprInt2ip::ObExprInt2ip(ObIAllocator &alloc)
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: ObStringExprOperator(alloc, T_FUN_SYS_INT2IP, N_INT2IP, 1)
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{
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}
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ObExprInt2ip::~ObExprInt2ip()
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{
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}
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int ObExprInt2ip::calc(ObObj &result, const ObObj &text, common::ObExprStringBuf &string_buf)
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{
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int ret = OB_SUCCESS;
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if (text.is_null()) {
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result.set_null();
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} else {
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TYPE_CHECK(text, ObIntType);
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int64_t int_val = text.get_int();
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if (OB_FAIL(int2ip(result, int_val, string_buf))) {
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LOG_WARN("fail to convert int 2 ip", K(ret), K(int_val));
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}
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}
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return ret;
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}
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int ObExprInt2ip::int2ip(ObObj &result, const int64_t int_val, ObExprStringBuf &string_buf)
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{
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int ret = OB_SUCCESS;
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ObString str_result;
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char *buf = static_cast<char *>(string_buf.alloc(16));
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if (OB_ISNULL(buf)) {
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result.set_null();
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ret = OB_ALLOCATE_MEMORY_FAILED;
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LOG_ERROR("alloc memory failed", K(ret));
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} else {
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if ((int_val >> 32) > 0 || int_val < 0) {
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result.set_null();
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} else {
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in_addr addr;
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addr.s_addr = htonl(static_cast<uint32_t>(int_val));
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const char *iret = inet_ntop(AF_INET, &addr, buf, 16);
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// Fixme : The problem with inet_ntop() is that it is available starting from Windows Vista,
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// but the minimum supported version is Windows 2000.
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if (OB_ISNULL(iret)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_ERROR("fail to inet_ntop", K(ret), K(int_val), K(addr.s_addr));
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} else {
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str_result.assign_ptr(buf, static_cast<ObString::obstr_size_t>(strlen(buf)));
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result.set_varchar(str_result);
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}
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}
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}
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return ret;
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}
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int ObExprInt2ip::int2ip(ObDatum &result, const int64_t int_val)
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{
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int ret = OB_SUCCESS;
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ObString str_result = result.get_string();
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char *buf = str_result.ptr();
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if ((int_val >> 32) > 0 || int_val < 0) {
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result.set_null();
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} else {
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in_addr addr;
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addr.s_addr = htonl(static_cast<uint32_t>(int_val));
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const char *iret = inet_ntop(AF_INET, &addr, buf, 16);
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if (OB_ISNULL(iret)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_ERROR("fail to inet_ntop", K(ret), K(int_val), K(addr.s_addr));
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} else {
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str_result.assign_ptr(buf, static_cast<ObString::obstr_size_t>(strlen(buf)));
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result.set_string(str_result);
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}
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}
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return ret;
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}
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int ObExprInt2ip::cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const
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{
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UNUSED(op_cg_ctx);
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UNUSED(raw_expr);
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int ret = OB_SUCCESS;
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if (rt_expr.arg_cnt_ != 1) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("int2ip expr should have one param", K(ret), K(rt_expr.arg_cnt_));
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} else if (OB_ISNULL(rt_expr.args_) || OB_ISNULL(rt_expr.args_[0])) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("children of int2ip expr is null", K(ret), K(rt_expr.args_));
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} else {
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CK(ObIntType == rt_expr.args_[0]->datum_meta_.type_);
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rt_expr.eval_func_ = ObExprInt2ip::int2ip_varchar;
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}
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return ret;
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}
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int ObExprInt2ip::int2ip_varchar(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum)
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{
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int ret = OB_SUCCESS;
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if (OB_FAIL(expr.eval_param_value(ctx))) {
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LOG_WARN("int2ip expr eval param value failed", K(ret));
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} else {
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ObDatum &text = expr.locate_param_datum(ctx, 0);
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if (text.is_null()) {
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expr_datum.set_null();
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} else {
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CK(expr.res_buf_len_ >= 16);
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int64_t int_val = text.get_int();
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if (OB_FAIL(int2ip(expr_datum, int_val))) {
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LOG_WARN("fail to convert int 2 ip", K(ret), K(int_val));
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}
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}
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}
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return ret;
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}
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}
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}
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