90 lines
2.9 KiB
C++
90 lines
2.9 KiB
C++
/*
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Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "sql/conn_handler/channel_info.h"
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#include <stddef.h>
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#include <stdio.h>
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#include <new>
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#include "my_dbug.h"
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#include "my_stacktrace.h" // my_safe_snprintf
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#include "mysql_com.h"
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#include "sql/derror.h" // ER_DEFAULT
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#include "sql/protocol_classic.h"
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#include "sql/sql_class.h" // THD
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#include "violite.h"
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THD *Channel_info::create_thd() {
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DBUG_EXECUTE_IF("simulate_resource_failure", return NULL;);
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Vio *vio_tmp = create_and_init_vio();
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if (vio_tmp == NULL) return NULL;
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THD *thd = new (std::nothrow) THD;
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if (thd == NULL) {
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vio_delete(vio_tmp);
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return NULL;
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}
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thd->get_protocol_classic()->init_net(vio_tmp);
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return thd;
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}
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void Channel_info::send_error_and_close_channel(uint errorcode, int error,
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bool senderror) {
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DBUG_ASSERT(errorcode != 0);
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if (!errorcode) return;
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char error_message_buff[MYSQL_ERRMSG_SIZE];
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if (senderror) {
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NET net_tmp;
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Vio *vio_tmp = create_and_init_vio();
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if (vio_tmp && !my_net_init(&net_tmp, vio_tmp)) {
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if (error)
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snprintf(error_message_buff, sizeof(error_message_buff),
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ER_DEFAULT_NONCONST(errorcode), error);
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net_send_error(
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&net_tmp, errorcode,
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error ? error_message_buff : ER_DEFAULT_NONCONST(errorcode));
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net_end(&net_tmp);
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}
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if (vio_tmp != NULL) {
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vio_tmp->inactive = true; // channel is already closed.
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vio_delete(vio_tmp);
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}
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} else // fatal error like out of memory.
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{
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if (error)
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my_safe_snprintf(error_message_buff, sizeof(error_message_buff),
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ER_DEFAULT_NONCONST(errorcode), error);
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my_safe_printf_stderr(
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"[Warning] %s\n",
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error ? error_message_buff : ER_DEFAULT_NONCONST(errorcode));
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}
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}
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