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69 lines
2.8 KiB
69 lines
2.8 KiB
/* Copyright (c) 2006, 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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Without limiting anything contained in the foregoing, this file,
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which is part of C Driver for MySQL (Connector/C), is also subject to the
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Universal FOSS Exception, version 1.0, a copy of which can be found at
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http://oss.oracle.com/licenses/universal-foss-exception.
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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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#include "my_user.h"
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#include "m_string.h"
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#include "my_hostname.h" // HOSTNAME_LENGTH
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#include "mysql_com.h" // USERNAME_LENGTH
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/*
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Parse user value to user name and host name parts.
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SYNOPSIS
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user_id_str [IN] User value string (the source).
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user_id_len [IN] Length of the user value.
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user_name_str [OUT] Buffer to store user name part.
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Must be not less than USERNAME_LENGTH + 1.
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user_name_len [OUT] A place to store length of the user name part.
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host_name_str [OUT] Buffer to store host name part.
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Must be not less than HOSTNAME_LENGTH + 1.
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host_name_len [OUT] A place to store length of the host name part.
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*/
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void parse_user(const char *user_id_str, size_t user_id_len,
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char *user_name_str, size_t *user_name_len, char *host_name_str,
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size_t *host_name_len) {
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const char *p = strrchr(user_id_str, '@');
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if (!p) {
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*user_name_len = 0;
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*host_name_len = 0;
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} else {
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*user_name_len = (uint)(p - user_id_str);
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*host_name_len = (uint)(user_id_len - *user_name_len - 1);
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if (*user_name_len > USERNAME_LENGTH) *user_name_len = USERNAME_LENGTH;
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if (*host_name_len > HOSTNAME_LENGTH) *host_name_len = HOSTNAME_LENGTH;
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memcpy(user_name_str, user_id_str, *user_name_len);
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memcpy(host_name_str, p + 1, *host_name_len);
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}
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user_name_str[*user_name_len] = 0;
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host_name_str[*host_name_len] = 0;
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}
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