93 lines
4.0 KiB
C++
93 lines
4.0 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_RESV
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#include "sql/resolver/dcl/ob_rename_user_resolver.h"
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#include "sql/session/ob_sql_session_info.h"
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using namespace oceanbase::sql;
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using namespace oceanbase::common;
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ObRenameUserResolver::ObRenameUserResolver(ObResolverParams ¶ms)
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: ObDCLResolver(params)
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{
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}
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ObRenameUserResolver::~ObRenameUserResolver()
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{
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}
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int ObRenameUserResolver::resolve(const ParseNode &parse_tree)
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{
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int ret = OB_SUCCESS;
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ParseNode *node = const_cast<ParseNode*>(&parse_tree);
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ObRenameUserStmt *rename_user_stmt = NULL;
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if (OB_ISNULL(params_.session_info_)) {
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ret = OB_NOT_INIT;
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LOG_WARN("Session info is not inited", K(ret));
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} else if (node != NULL && T_RENAME_USER == node->type_ && node->num_child_ > 0) {
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if (OB_ISNULL(rename_user_stmt = create_stmt<ObRenameUserStmt>())) {
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ret = OB_ALLOCATE_MEMORY_FAILED;
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LOG_ERROR("Failed to create ObRenameUserStmt", K(ret));
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} else {
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stmt_ = rename_user_stmt;
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rename_user_stmt->set_tenant_id(session_info_->get_effective_tenant_id());
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for (int i = 0; i < node->num_child_ && OB_SUCCESS == ret; ++i) {
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ParseNode *rename_info = NULL;
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if (OB_ISNULL(rename_info = node->children_[i])) {
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ret = OB_ERR_PARSE_SQL;
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LOG_WARN("Child should not be NULL", K(ret), K(i));
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} else if (4 == rename_info->num_child_ && T_RENAME_INFO == rename_info->type_
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&& NULL != rename_info->children_[0] && NULL != rename_info->children_[2]) {
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ObString from_user(rename_info->children_[0]->str_len_, rename_info->children_[0]->str_value_);
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ObString from_host;
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ObString to_user(rename_info->children_[2]->str_len_, rename_info->children_[2]->str_value_);
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ObString to_host;
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if (NULL == rename_info->children_[1]) {
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from_host.assign_ptr(OB_DEFAULT_HOST_NAME, static_cast<int32_t>(STRLEN(OB_DEFAULT_HOST_NAME)));
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} else {
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from_host.assign_ptr(rename_info->children_[1]->str_value_,
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static_cast<int32_t>(rename_info->children_[1]->str_len_));
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}
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if (NULL == rename_info->children_[3]) {
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to_host.assign_ptr(OB_DEFAULT_HOST_NAME, static_cast<int32_t>(STRLEN(OB_DEFAULT_HOST_NAME)));
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} else {
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to_host.assign_ptr(rename_info->children_[3]->str_value_,
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static_cast<int32_t>(rename_info->children_[3]->str_len_));
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}
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if ((0 == to_user.case_compare(OB_RESTORE_USER_NAME)) || (0 == from_user.case_compare(OB_RESTORE_USER_NAME))) {
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ret = OB_ERR_NO_PRIVILEGE;
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LOG_WARN("__oceanbase_inner_restore_user is reserved", K(ret));
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} else if (from_user.length() > OB_MAX_USER_NAME_LENGTH) {
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LOG_USER_ERROR(OB_WRONG_USER_NAME_LENGTH, from_user.length(), from_user.ptr());
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} else if (to_user.length() > OB_MAX_USER_NAME_LENGTH) {
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LOG_USER_ERROR(OB_WRONG_USER_NAME_LENGTH, to_user.length(), to_user.ptr());
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} else if (OB_FAIL(rename_user_stmt->add_rename_info(from_user, from_host, to_user, to_host))) {
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LOG_WARN("Failed to add user to ObRenameUserStmt", K(ret));
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} else {
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//do nothing
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}
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} else {
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ret = OB_ERR_PARSE_SQL;
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LOG_WARN("sql_parser parse rename_info error", K(ret));
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}
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} // end for
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}
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} else {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("rename user ParseNode error", K(ret));
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}
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return ret;
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}
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