Added new option MARIADB_OPT_RPL_REGISTER_REPLICA which expects
two parameters, host and port. When this option was set, rpl_open
will send a COM_REGISTER_SLAVE command with server_id, host and
port to the connected server. This information can be retrieved
by "SHOW SLAVE STATUS" command.
Example:
rc= mysql_optionsv(mysql, MARIADB_OPT_RPL_REGISTER_REPLICA,
"myhost", 123);
Since alerts may happen after handshake (for example with described
test in CONC-587 using TLSv1.3 protocol or by renegotiation) the
tls error message needs to be retrieved if error is a protocol error
(SSL_ERROR_SSL) and/or if errno was not set.
ZSTD compression is now supported for connections
to a MySQL Server 8.0.
Compression algorithms are supported via compression
plugins, which can be found in plugins/compress.
- For reconnection/and multi host tests specify also socket location,
since mtr doesn't use default socket for localhost connections
- parse_connection_string now returns NULL for empty password in
curly braces
Added new options MARIADB_CONNECTION_BYTES_READ and
MARIADB_CONNECTION_BYTES_SENT which can be passed to
mariadb_get_infov() api funcion to obtain the bytes sent
or read to/from database server.
host parameter of mysql_real_connect (and corresponding configuration
settings MYSQL_OPT_HOST for mysql_options() api call and host key in
configuration files) now accepts to specify multiple hosts and ports.
When establishing a connection, the list of specified hosts is run
through until a connection can be established. If no connection
can be established to any of the specified hosts, an error is returned.
Specifications for multiple hosts/ports:
- hostname and port must be seperated by a colon (:)
- IPv6 addresses must be enclosed within square brackets
- hostname:port pairs must be be seperated by a comma (,)
- if only one host:port was specified, the host string needs to end
with a comma.
- if no port was specified, the default port will be used.
Examples for failover host string:
host=[::1]:3306,192.168.0.1:3306,test.example.com
host=localhost:3306,
A connection string contains key/value pairs, separated by a semicolon
as used in ODBC. Supported keys are all configuration options which can
be used in MariaDB configuration files. For a complete list check
https://github.com/mariadb-corporation/mariadb-connector-c/wiki/config_files#configuration-options.
The connection string must contain at least one semicolon, otherwise
it wil be interpreted as hostname. Unknown or invalid keys will be ignored.
To connect via connection string, the following methods might be used:
- by specifing connection option in configuration file:
connection=host=localhost;ssl_enforce=1;
- by using mariadb_connect() macro
mariadb_connect(mysql, "host=localhost;ssl_enforce=1")
- by passing connection string in host parameter to mysql_real_connect
mysql_real_connect(mysql, "host=localhost;ssl_enforce=1", NULL, NULL, NULL, 0, NULL, 0)
If multiple threads attempt to connect to a server using a
dynamically loaded authentication plugin the error
"plugin is already loaded" might occur. This is caused
by a race condition if one thread waits for a lock to
load the plugin, while another process which obtained the lock
already loaded the plugin.
The API function mysql_load_plugin_v() now returns
the plugin handle (instead of raising an error and returning
a NULL handle) even if the plugin was already loaded.
Added new option MARIADB_OPT_RESTRICTED_AUTH (and corresponding
"restricted-auth" option for configuration files) which specifies
on or more comma spearated authentication plugins which are allowed
for authenication.
If the server asks for an authentication plugin not listed in this
option the connect attempt will fail with error CR_PLUGIN_NOT_ALLOWED.
- removed unused methods from MYSQL_STMT handle,
(left over from PHP's mysqlnd)
- Added execute_generate_request method: This will allow
Connector/Python to prefill the execute buffer without
numerous GIL acquire/release calls.
Added a new option MARIADB_OPT_SKIP_READ_RESPONSE which skips automatic
reading of server response after sending a command to the server.
Server packets have to be retrieved by calling the corresponding methods,
e.g:
Send command Read method
mysql_real_query/mysql_send_query db_read_query_result
mysql_stmt_prepare db_read_prepare_response
mysql_stmt_execute,
mariadb_stmt_execute_direct db_read_execute_response
To allow static linking with GnuTLS hash lookup functions are now
prefixed with ma_hashtbl_. The files hash.c and hash.h were renamed
to ma_hashtbl.c and ma_hashtbl.h
With implementation of MDEV-16708 (support all commands in binary protocol) we
need to check for local infile in text and binary protocol. Therefore the local
infile relevant part from ma_simple_command was moved to mthd_my_send_cmd method.
Instead of getlogin() we first try to determine the current user of the process
by calling getpwuid(). If for some reaon getpwuid() will fail, we will use getlogin() instead.
mysql_list_processlists was marked as deprecated in MySQL 4.0 and not
updated anymore. It exists still in latest MySQL and MariaDB connectors.
It now supports the 4.1 protocol, using 7 instead of 5 fields.
The following functions are now marked deprecated in source:
* mysql_list_dbs
* mysql_list_tables
* mysql_list_processes
Various coverity scan fixes, including CONC-452 and CONC-453.
Special thanks to Lukas Javorsky for fixing numerous covscan
issues (This patch includes part of his pull request #126).
Coverity scan build was using the following cmake parameters:
-WITH_EXTERNAL_ZLIB=ON -DWITH_UNIT_TESTS=OFF.
CWE-416 (use after free) in dtoa.c (from netlib) is still open.
