diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/mysql_com.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/mysql_com.h b/include/mysql_com.h index 96eb8f21d3f..d39414bbea6 100644 --- a/include/mysql_com.h +++ b/include/mysql_com.h @@ -27,6 +27,31 @@ #define NAME_LEN (NAME_CHAR_LEN*SYSTEM_CHARSET_MBMAXLEN) #define USERNAME_LENGTH (USERNAME_CHAR_LENGTH*SYSTEM_CHARSET_MBMAXLEN) +/* + MDEV-4088 + + MySQL (and MariaDB 5.x before the fix) was using the first character of the + server version string (as sent in the first handshake protocol packet) to + decide on the replication event formats. And for 10.x the first character + is "1", which the slave thought comes from some ancient 1.x version + (ignoring the fact that the first ever MySQL version was 3.x). + + To support replication to these old clients, we fake the version in the + first handshake protocol packet to start from "5.5.5-" (for example, + it might be "5.5.5-10.0.1-MariaDB-debug-log". + + On the client side we remove this fake version prefix to restore the + correct server version. The version "5.5.5" did not support + pluggable authentication, so any version starting from "5.5.5-" and + claiming to support pluggable auth, must be using this fake prefix. +*/ +#ifdef EMBEDDED_LIBRARY +#define RPL_VERSION_HACK "" +#else +/* this version must be the one that *does not* support pluggable auth */ +#define RPL_VERSION_HACK "5.5.5-" +#endif + #define SERVER_VERSION_LENGTH 60 #define SQLSTATE_LENGTH 5 @@ -145,6 +170,8 @@ enum enum_server_command #define CLIENT_MULTI_STATEMENTS (1UL << 16) /* Enable/disable multi-stmt support */ #define CLIENT_MULTI_RESULTS (1UL << 17) /* Enable/disable multi-results */ +#define CLIENT_PLUGIN_AUTH (1UL << 19) /* Client supports plugin authentication */ + #define CLIENT_SSL_VERIFY_SERVER_CERT (1UL << 30) #define CLIENT_REMEMBER_OPTIONS (1UL << 31) |