diff options
Diffstat (limited to 'sql/sql_connect.cc')
| -rw-r--r-- | sql/sql_connect.cc | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/sql/sql_connect.cc b/sql/sql_connect.cc index 1c2ae915259..def0c8dd951 100644 --- a/sql/sql_connect.cc +++ b/sql/sql_connect.cc @@ -780,8 +780,23 @@ void update_global_user_stats(THD *thd, bool create_user, time_t now) } -void thd_init_client_charset(THD *thd, uint cs_number) +/** + Set thread character set variables from the given ID + + @param thd thread handle + @param cs_number character set and collation ID + + @retval 0 OK; character_set_client, collation_connection and + character_set_results are set to the new value, + or to the default global values. + + @retval 1 error, e.g. the given ID is not supported by parser. + Corresponding SQL error is sent. +*/ + +bool thd_init_client_charset(THD *thd, uint cs_number) { + CHARSET_INFO *cs; /* Use server character set and collation if - opt_character_set_client_handshake is not set @@ -790,10 +805,10 @@ void thd_init_client_charset(THD *thd, uint cs_number) - client character set doesn't exists in server */ if (!opt_character_set_client_handshake || - !(thd->variables.character_set_client= get_charset(cs_number, MYF(0))) || + !(cs= get_charset(cs_number, MYF(0))) || !my_strcasecmp(&my_charset_latin1, global_system_variables.character_set_client->name, - thd->variables.character_set_client->name)) + cs->name)) { thd->variables.character_set_client= global_system_variables.character_set_client; @@ -804,10 +819,18 @@ void thd_init_client_charset(THD *thd, uint cs_number) } else { + if (!is_supported_parser_charset(cs)) + { + /* Disallow non-supported parser character sets: UCS2, UTF16, UTF32 */ + my_error(ER_WRONG_VALUE_FOR_VAR, MYF(0), "character_set_client", + cs->csname); + return true; + } thd->variables.character_set_results= thd->variables.collation_connection= - thd->variables.character_set_client; + thd->variables.character_set_client= cs; } + return false; } |