protect against malicious server trying to crash command-line client :)

client/mysql.cc

@@ -172,7 +172,7 @@ static char *shared_memory_base_name=0;
 #endif
 static uint opt_protocol=0;
 static CHARSET_INFO *charset_info= &my_charset_latin1;
-			   
+
 #include "sslopt-vars.h"
 
 const char *default_dbug_option="d:t:o,/tmp/mysql.trace";
@@ -1520,7 +1520,7 @@ You can turn off this feature to get a quicker startup with -A\n\n");
       j=0;
       while ((sql_field=mysql_fetch_field(fields)))
       {
-	sprintf(buf,"%s.%s",table_row[0],sql_field->name);
+	sprintf(buf,"%.64s.%.64s",table_row[0],sql_field->name);
 	field_names[i][j] = strdup_root(&hash_mem_root,buf);
 	add_word(&ht,field_names[i][j]);
 	field_names[i][num_fields+j] = strdup_root(&hash_mem_root,
@@ -1597,7 +1597,7 @@ int mysql_real_query_for_lazy(const char *buf, int length)
   for (uint retry=0;; retry++)
   {
     if (!mysql_real_query(&mysql,buf,length))
-      return 0;    
+      return 0;
     int error= put_error(&mysql);
     if (mysql_errno(&mysql) != CR_SERVER_GONE_ERROR || retry > 1 ||
       !opt_reconnect)
@@ -2526,7 +2526,7 @@ com_connect(String *buffer, char *line)
   {
     sprintf(buff,"Connection id:    %lu",mysql_thread_id(&mysql));
     put_info(buff,INFO_INFO);
-    sprintf(buff,"Current database: %s\n",
+    sprintf(buff,"Current database: %.128s\n",
 	    current_db ? current_db : "*** NONE ***");
     put_info(buff,INFO_INFO);
   }