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Bug#37428 Potential security issue with UDFs - linux shellcode execution.

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plugin_dir option backported from 5.1

per-file messages:
  sql/mysql_priv.h
    Bug#37428 Potential security issue with UDFs - linux shellcode execution.
    
    opt_plugin_dir and opt_plugin_dir_ptr declared.
  sql/mysqld.cc
    Bug#37428 Potential security issue with UDFs - linux shellcode execution.
    
    'plugin_dir' option added
  sql/set_var.cc
    Bug#37428 Potential security issue with UDFs - linux shellcode execution.
    
    'plugin_dir' option added.
  sql/sql_udf.cc
    Bug#37428 Potential security issue with UDFs - linux shellcode execution.
    
    opt_plugin_dir added to the udf->dl path. Warn if it's not specified.
  sql/unireg.h
    Bug#37428 Potential security issue with UDFs - linux shellcode execution.
    
    PLUGINDIR defined.
This commit is contained in:
Alexey Botchkov
2008-07-28 19:22:12 +05:00
parent fab14a4782
commit 2d590c2825
5 changed files with 41 additions and 3 deletions
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11
sql/mysqld.cc
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@ -324,6 +324,9 @@ arg_cmp_func Arg_comparator::comparator_matrix[5][2] =
/* static variables */
char opt_plugin_dir[FN_REFLEN];
char *opt_plugin_dir_ptr;
static bool lower_case_table_names_used= 0;
static bool volatile select_thread_in_use, signal_thread_in_use;
static bool volatile ready_to_exit;
@ -4984,6 +4987,7 @@ enum options_mysqld
OPT_OLD_STYLE_USER_LIMITS,
OPT_LOG_SLOW_ADMIN_STATEMENTS,
OPT_TABLE_LOCK_WAIT_TIMEOUT,
OPT_PLUGIN_DIR,
OPT_PORT_OPEN_TIMEOUT,
OPT_MERGE,
OPT_PROFILING,
@ -6223,6 +6227,10 @@ The minimum value for this variable is 4096.",
(gptr*) &global_system_variables.optimizer_search_depth,
(gptr*) &max_system_variables.optimizer_search_depth,
0, GET_ULONG, OPT_ARG, MAX_TABLES+1, 0, MAX_TABLES+2, 0, 1, 0},
{"plugin_dir", OPT_PLUGIN_DIR,
"Directory for plugins.",
(gptr*) &opt_plugin_dir_ptr, (gptr*) &opt_plugin_dir_ptr, 0,
GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
{"preload_buffer_size", OPT_PRELOAD_BUFFER_SIZE,
"The size of the buffer that is allocated when preloading indexes",
(gptr*) &global_system_variables.preload_buff_size,
@ -7761,6 +7769,9 @@ static void fix_paths(void)
(void) my_load_path(mysql_home,mysql_home,""); // Resolve current dir
(void) my_load_path(mysql_real_data_home,mysql_real_data_home,mysql_home);
(void) my_load_path(pidfile_name,pidfile_name,mysql_real_data_home);
(void) my_load_path(opt_plugin_dir, opt_plugin_dir_ptr ? opt_plugin_dir_ptr :
"", "");
opt_plugin_dir_ptr= opt_plugin_dir;
char *sharedir=get_relative_path(SHAREDIR);
if (test_if_hard_path(sharedir))