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-rw-r--r--sql-common/my_user.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/sql-common/my_user.c b/sql-common/my_user.c
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+/* Copyright (c) 2006-2008 MySQL AB, 2009 Sun Microsystems, Inc.
+ Use is subject to license terms.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; version 2 of the License.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
+
+#include <my_global.h>
+#include <my_user.h>
+#include <m_string.h>
+#include <mysql_com.h>
+
+/*
+ Parse user value to user name and host name parts.
+
+ SYNOPSIS
+ user_id_str [IN] User value string (the source).
+ user_id_len [IN] Length of the user value.
+ user_name_str [OUT] Buffer to store user name part.
+ Must be not less than USERNAME_LENGTH + 1.
+ user_name_len [OUT] A place to store length of the user name part.
+ host_name_str [OUT] Buffer to store host name part.
+ Must be not less than HOSTNAME_LENGTH + 1.
+ host_name_len [OUT] A place to store length of the host name part.
+
+ RETURN
+ 0 - if only a user was set, no '@' was found
+ 1 - if both user and host were set
+*/
+
+int parse_user(const char *user_id_str, size_t user_id_len,
+ char *user_name_str, size_t *user_name_len,
+ char *host_name_str, size_t *host_name_len)
+{
+ char *p= strrchr(user_id_str, '@');
+
+ if (!p)
+ {
+ *user_name_len= user_id_len;
+ *host_name_len= 0;
+ }
+ else
+ {
+ *user_name_len= (uint) (p - user_id_str);
+ *host_name_len= (uint) (user_id_len - *user_name_len - 1);
+ }
+
+ if (*user_name_len > USERNAME_LENGTH)
+ *user_name_len= USERNAME_LENGTH;
+
+ if (*host_name_len > HOSTNAME_LENGTH)
+ *host_name_len= HOSTNAME_LENGTH;
+
+ memcpy(user_name_str, user_id_str, *user_name_len);
+ memcpy(host_name_str, p + 1, *host_name_len);
+
+ user_name_str[*user_name_len]= 0;
+ host_name_str[*host_name_len]= 0;
+
+ return p != NULL;
+}