diff options
Diffstat (limited to 'libmysql/libmysql.c')
| -rw-r--r-- | libmysql/libmysql.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/libmysql/libmysql.c b/libmysql/libmysql.c index f2d77d495c9..6a4189b6b18 100644 --- a/libmysql/libmysql.c +++ b/libmysql/libmysql.c @@ -1612,6 +1612,56 @@ mysql_connect(MYSQL *mysql,const char *host, #endif +#ifdef CHECK_LICENSE +/* + Check server side variable 'license'. + If the variable does not exist or does not contain 'Commercial', + we're talking to non-commercial server from commercial client. + SYNOPSIS + check_license() + RETURN VALUE + 0 success + !0 network error or the server is not commercial. + Error code is saved in mysql->net.last_errno. +*/ + +static int check_license(MYSQL *mysql) +{ + MYSQL_ROW row; + MYSQL_RES *res; + NET *net= &mysql->net; + static const char query[]= "SELECT @@license"; + static const char required_license[]= LICENSE; + + if (mysql_real_query(mysql, query, sizeof(query)-1)) + { + if (net->last_errno == ER_UNKNOWN_SYSTEM_VARIABLE) + { + net->last_errno= CR_WRONG_LICENSE; + sprintf(net->last_error, ER(net->last_errno), required_license); + } + return 1; + } + if (!(res= mysql_use_result(mysql))) + return 1; + row= mysql_fetch_row(res); + /* + If no rows in result set, or column value is NULL (none of these + two is ever true for server variables now), or column value + mismatch, set wrong license error. + */ + if (!net->last_errno && + (!row || !row[0] || + strncmp(row[0], required_license, sizeof(required_license)))) + { + net->last_errno= CR_WRONG_LICENSE; + sprintf(net->last_error, ER(net->last_errno), required_license); + } + mysql_free_result(res); + return net->last_errno; +} +#endif /* CHECK_LICENSE */ + /* The following union is used to force a struct to be double allgined. This is to avoid warings with gethostname_r() on Linux itanium systems @@ -2048,6 +2098,10 @@ mysql_real_connect(MYSQL *mysql,const char *host, const char *user, net->compress=1; if (mysql->options.max_allowed_packet) net->max_packet_size= mysql->options.max_allowed_packet; +#ifdef CHECK_LICENSE + if (check_license(mysql)) + goto error; +#endif if (db && mysql_select_db(mysql,db)) goto error; if (mysql->options.init_command) |