diff options
Diffstat (limited to 'sql/sql_parse.cc')
| -rw-r--r-- | sql/sql_parse.cc | 93 |
1 files changed, 91 insertions, 2 deletions
diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc index 5b316f130b9..54365da5496 100644 --- a/sql/sql_parse.cc +++ b/sql/sql_parse.cc @@ -2578,6 +2578,43 @@ mysql_execute_command(THD *thd) { select_result *result; + /* + If: + a) we inside an SP and there was NAME_CONST substitution, + b) binlogging is on (STMT mode), + c) we log the SP as separate statements + raise a warning, as it may cause problems + (see 'NAME_CONST issues' in 'Binary Logging of Stored Programs') + */ + if (thd->query_name_consts && + mysql_bin_log.is_open() && + thd->variables.binlog_format == BINLOG_FORMAT_STMT && + !mysql_bin_log.is_query_in_union(thd, thd->query_id)) + { + List_iterator_fast<Item> it(select_lex->item_list); + Item *item; + uint splocal_refs= 0; + /* Count SP local vars in the top-level SELECT list */ + while ((item= it++)) + { + if (item->is_splocal()) + splocal_refs++; + } + /* + If it differs from number of NAME_CONST substitution applied, + we may have a SOME_FUNC(NAME_CONST()) in the SELECT list, + that may cause a problem with binary log (see BUG#35383), + raise a warning. + */ + if (splocal_refs != thd->query_name_consts) + push_warning(thd, + MYSQL_ERROR::WARN_LEVEL_WARN, + ER_UNKNOWN_ERROR, +"Invoked routine ran a statement that may cause problems with " +"binary log, see 'NAME_CONST issues' in 'Binary Logging of Stored Programs' " +"section of the manual."); + } + select_lex->options|= SELECT_NO_UNLOCK; unit->set_limit(select_lex); @@ -4151,9 +4188,32 @@ end_with_restore_list: res= (sp_result= lex->sphead->create(thd)); switch (sp_result) { - case SP_OK: + case SP_OK: { #ifndef NO_EMBEDDED_ACCESS_CHECKS /* only add privileges if really neccessary */ + + Security_context security_context; + bool restore_backup_context= false; + Security_context *backup= NULL; + LEX_USER *definer= thd->lex->definer; + /* + Check if the definer exists on slave, + then use definer privilege to insert routine privileges to mysql.procs_priv. + + For current user of SQL thread has GLOBAL_ACL privilege, + which doesn't any check routine privileges, + so no routine privilege record will insert into mysql.procs_priv. + */ + if (thd->slave_thread && is_acl_user(definer->host.str, definer->user.str)) + { + security_context.change_security_context(thd, + &thd->lex->definer->user, + &thd->lex->definer->host, + &thd->lex->sphead->m_db, + &backup); + restore_backup_context= true; + } + if (sp_automatic_privileges && !opt_noacl && check_routine_access(thd, DEFAULT_CREATE_PROC_ACLS, lex->sphead->m_db.str, name, @@ -4165,8 +4225,19 @@ end_with_restore_list: ER_PROC_AUTO_GRANT_FAIL, ER(ER_PROC_AUTO_GRANT_FAIL)); } + + /* + Restore current user with GLOBAL_ACL privilege of SQL thread + */ + if (restore_backup_context) + { + DBUG_ASSERT(thd->slave_thread == 1); + thd->security_ctx->restore_security_context(thd, backup); + } + #endif break; + } case SP_WRITE_ROW_FAILED: my_error(ER_SP_ALREADY_EXISTS, MYF(0), SP_TYPE_STRING(lex), name); break; @@ -6878,8 +6949,26 @@ uint kill_one_thread(THD *thd, ulong id, bool only_kill_query) VOID(pthread_mutex_unlock(&LOCK_thread_count)); if (tmp) { + + /* + If we're SUPER, we can KILL anything, including system-threads. + No further checks. + + KILLer: thd->security_ctx->user could in theory be NULL while + we're still in "unauthenticated" state. This is a theoretical + case (the code suggests this could happen, so we play it safe). + + KILLee: tmp->security_ctx->user will be NULL for system threads. + We need to check so Jane Random User doesn't crash the server + when trying to kill a) system threads or b) unauthenticated users' + threads (Bug#43748). + + If user of both killer and killee are non-NULL, proceed with + slayage if both are string-equal. + */ + if ((thd->security_ctx->master_access & SUPER_ACL) || - !strcmp(thd->security_ctx->user, tmp->security_ctx->user)) + thd->security_ctx->user_matches(tmp->security_ctx)) { tmp->awake(only_kill_query ? THD::KILL_QUERY : THD::KILL_CONNECTION); error=0; |
