--safe-show-db and have_xxx variables

Docs/manual.texi:
  Added MySQL usage & MySQL supporters
sql/gen_lex_hash.cc:
  Smaller region
sql/mysql_priv.h:
  --safe-show-db

sql/gen_lex_hash.cc

@@ -472,7 +472,7 @@ int main(int argc,char **argv)
   int error;
 
   MY_INIT(argv[0]);
-  start_value=5206280L; best_t1=590774L;  best_t2=5977654L;  best_type=1; /* mode=6229  add=2  func_type: 0 */
+  start_value=5307411L; best_t1=4597287L;  best_t2=3375760L;  best_type=1; /* mode=4783  add=5  func_type: 0 */
   if (get_options(argc,(char **) argv))
     exit(1);
 

sql/mysql_priv.h

@@ -520,7 +520,7 @@ extern ulong keybuff_size,sortbuff_size,max_item_sort_length,table_cache_size,
 	     binlog_cache_size, max_binlog_cache_size;
 extern ulong specialflag, current_pid;
 extern bool low_priority_updates;
-extern bool opt_sql_bin_update;
+extern bool opt_sql_bin_update, opt_safe_show_db;
 extern char language[LIBLEN],reg_ext[FN_EXTLEN],blob_newline;
 extern const char **errmesg;			/* Error messages */
 extern byte last_ref[MAX_REFLENGTH];		/* Index ref of keys */

sql/mysqld.cc

@@ -146,6 +146,33 @@ static uint handler_count;
 static bool opt_console=0;
 #endif
 
+#ifdef HAVE_BERKELEY_DB
+SHOW_COMP_OPTION have_berkeley_db=SHOW_OPTION_YES;
+#else
+SHOW_COMP_OPTION have_berkeley_db=SHOW_OPTION_NO;
+#endif
+#ifdef HAVE_GEMENI_DB
+SHOW_COMP_OPTION have_gemeni=SHOW_OPTION_YES;
+#else
+SHOW_COMP_OPTION have_gemeni=SHOW_OPTION_NO;
+#endif
+#ifdef HAVE_INNOBASE_DB
+SHOW_COMP_OPTION have_innobase=SHOW_OPTION_YES;
+#else
+SHOW_COMP_OPTION have_innobase=SHOW_OPTION_NO;
+#endif
+#ifdef USE_RAID
+SHOW_COMP_OPTION have_raid=SHOW_OPTION_YES;
+#else
+SHOW_COMP_OPTION have_raid=SHOW_OPTION_NO;
+#endif
+#ifdef HAVE_OPENSSL
+SHOW_COMP_OPTION have_ssl=SHOW_OPTION_YES;
+#else
+SHOW_COMP_OPTION have_ssl=SHOW_OPTION_NO;
+#endif
+
+
 static bool opt_skip_slave_start = 0; // if set, slave is not autostarted
 static ulong opt_specialflag=SPECIAL_ENGLISH;
 static my_socket unix_sock= INVALID_SOCKET,ip_sock= INVALID_SOCKET;
@@ -155,9 +182,10 @@ static my_string opt_logname=0,opt_update_logname=0,
 static char mysql_home[FN_REFLEN],pidfile_name[FN_REFLEN];
 static pthread_t select_thread;
 static bool opt_log,opt_update_log,opt_bin_log,opt_slow_log,opt_noacl,
-            opt_disable_networking=0, opt_bootstrap=0,opt_skip_show_db=0,
-	    opt_ansi_mode=0,opt_myisam_log=0, opt_large_files=sizeof(my_off_t) > 4;
-bool opt_sql_bin_update = 0, opt_log_slave_updates = 0;
+	    opt_disable_networking=0, opt_bootstrap=0,opt_skip_show_db=0,
+            opt_ansi_mode=0,opt_myisam_log=0,
+            opt_large_files=sizeof(my_off_t) > 4;
+bool opt_sql_bin_update = 0, opt_log_slave_updates = 0, opt_safe_show_db=0;
 FILE *bootstrap_file=0;
 int segfaulted = 0; // ensure we do not enter SIGSEGV handler twice
 extern MASTER_INFO glob_mi;
@@ -2322,7 +2350,7 @@ enum options {
 	       OPT_INNOBASE_DATA_HOME_DIR,OPT_INNOBASE_DATA_FILE_PATH,
 	       OPT_INNOBASE_LOG_GROUP_HOME_DIR,
 	       OPT_INNOBASE_LOG_ARCH_DIR, OPT_INNOBASE_LOG_ARCHIVE,
-	       OPT_INNOBASE_FLUSH_LOG_AT_TRX_COMMIT
+	       OPT_INNOBASE_FLUSH_LOG_AT_TRX_COMMIT, OPT_SAFE_SHOW_DB
 };
 
 static struct option long_options[] = {
@@ -2424,6 +2452,7 @@ static struct option long_options[] = {
   {"replicate-rewrite-db",   required_argument, 0,
      (int) OPT_REPLICATE_REWRITE_DB},
   {"safe-mode",             no_argument,       0, (int) OPT_SAFE},
+  {"safe-show-database",    no_argument,       0, (int) OPT_SAFE_SHOW_DB},
   {"socket",                required_argument, 0, (int) OPT_SOCKET},
   {"server-id",		    required_argument, 0, (int) OPT_SERVER_ID},
   {"set-variable",          required_argument, 0, 'O'},
@@ -2593,6 +2622,11 @@ struct show_var_st init_vars[]= {
   {"delayed_queue_size",      (char*) &delayed_queue_size,          SHOW_LONG},
   {"flush",                   (char*) &myisam_flush,                SHOW_MY_BOOL},
   {"flush_time",              (char*) &flush_time,                  SHOW_LONG},
+  {"have_bdb",		      (char*) &have_berkeley_db,	    SHOW_HAVE},
+  {"have_gemeni",	      (char*) &have_gemeni,		    SHOW_HAVE},
+  {"have_innobase",	      (char*) &have_innobase,		    SHOW_HAVE},
+  {"have_raid",		      (char*) &have_raid,		    SHOW_HAVE},
+  {"have_ssl",		      (char*) &have_ssl,		    SHOW_HAVE},
   {"init_file",               (char*) &opt_init_file,               SHOW_CHAR_PTR},
   {"interactive_timeout",     (char*) &net_interactive_timeout,     SHOW_LONG},
   {"join_buffer_size",        (char*) &join_buff_size,              SHOW_LONG},
@@ -2631,6 +2665,7 @@ struct show_var_st init_vars[]= {
   {"protocol_version",        (char*) &protocol_version,            SHOW_INT},
   {"record_buffer",           (char*) &my_default_record_cache_size,SHOW_LONG},
   {"query_buffer_size",       (char*) &query_buff_size,		    SHOW_LONG},
+  {"safe_show_database",      (char*) &opt_safe_show_db,            SHOW_BOOL},
   {"server_id",               (char*) &server_id,		    SHOW_LONG},
   {"skip_locking",            (char*) &my_disable_locking,          SHOW_MY_BOOL},
   {"skip_networking",         (char*) &opt_disable_networking,      SHOW_BOOL},
@@ -3347,11 +3382,13 @@ static void get_options(int argc,char **argv)
       break;
     case OPT_BDB_SKIP:
       berkeley_skip=1;
+      have_berkeley_db=SHOW_OPTION_DISABLED;
       break;
 #endif
 #ifdef HAVE_INNOBASE_DB
     case OPT_INNOBASE_SKIP:
       innobase_skip=1;
+      have_innobase_db=SHOW_HAVE_DISABLED;
       break;
     case OPT_INNOBASE_DATA_HOME_DIR:
       innobase_data_home_dir=optarg;
@@ -3410,6 +3447,9 @@ static void get_options(int argc,char **argv)
     case OPT_MASTER_CONNECT_RETRY:
       master_connect_retry= atoi(optarg);
       break;
+    case (int) OPT_SAFE_SHOW_DB:
+      opt_safe_show_db=1;
+      break;
 
     default:
       fprintf(stderr,"%s: Unrecognized option: %c\n",my_progname,c);

sql/sql_show.cc

@@ -21,8 +21,6 @@
 #include "sql_select.h"                         // For select_describe
 #include "sql_acl.h"
 #include <my_dir.h>
-#undef USE_RAID
-#define USE_RAID
 
 #ifdef HAVE_BERKELEY_DB
 #include "ha_berkeley.h"			// For berkeley_show_logs
@@ -77,10 +75,17 @@ mysqld_show_dbs(THD *thd,const char *wild)
   List_iterator<char> it(files);
   while ((file_name=it++))
   {
-    thd->packet.length(0);
-    net_store_data(&thd->packet,file_name);
-    if (my_net_write(&thd->net,(char*) thd->packet.ptr(),thd->packet.length()))
-      DBUG_RETURN(-1);
+    if (!opt_safe_show_db || thd->master_access ||
+	acl_get(thd->host, thd->ip, (char*) &thd->remote.sin_addr,
+		thd->priv_user, file_name) ||
+	(grant_option && !check_grant_db(thd, file_name)))
+      {
+      thd->packet.length(0);
+      net_store_data(&thd->packet,file_name);
+      if (my_net_write(&thd->net, (char*) thd->packet.ptr(),
+		       thd->packet.length()))
+	DBUG_RETURN(-1);
+    }
   }
   send_eof(&thd->net);
   DBUG_RETURN(0);
@@ -1088,6 +1093,14 @@ int mysqld_show(THD *thd, const char *wild, show_var_st *variables)
       case SHOW_INT:
         net_store_data(&packet2,(uint32) *(int*) variables[i].value);
         break;
+      case SHOW_HAVE:
+      {
+	SHOW_COMP_OPTION tmp= *(SHOW_COMP_OPTION*) variables[i].value;
+        net_store_data(&packet2, (tmp == SHOW_OPTION_NO ? "NO" :
+				  tmp == SHOW_OPTION_YES ? "YES" :
+				  "DISABLED"));
+        break;
+      }
       case SHOW_CHAR:
         net_store_data(&packet2,variables[i].value);
         break;

sql/structs.h

@@ -125,7 +125,9 @@ typedef struct {
 
 enum SHOW_TYPE { SHOW_LONG,SHOW_CHAR,SHOW_INT,SHOW_CHAR_PTR,SHOW_BOOL,
 		 SHOW_MY_BOOL,SHOW_OPENTABLES,SHOW_STARTTIME,SHOW_QUESTION,
-		 SHOW_LONG_CONST, SHOW_INT_CONST};
+		 SHOW_LONG_CONST, SHOW_INT_CONST, SHOW_HAVE};
+
+enum SHOW_COMP_OPTION { SHOW_OPTION_YES, SHOW_OPTION_NO, SHOW_OPTION_DISABLED};
 
 struct show_var_st {
   const char *name;