Login
User Name:

Password:



Register
Forgot your password?
Vote for Us!
 Couple bugs
Yesterday, 5:42 pm
By Remcon
Bug in disarm( )
Nov 12, 2017, 6:54 pm
By GatewaySysop
Bug in will_fall( )
Oct 23, 2017, 1:35 am
By GatewaySysop
Bug in do_zap( ), do_brandish( )
Oct 18, 2017, 1:52 pm
By GatewaySysop
Bug in get_exp_worth( )
Oct 10, 2017, 1:26 am
By GatewaySysop
LOP 1.45
Author: Remcon
Submitted by: Remcon
LOP Heroes Edition
Author: Vladaar
Submitted by: Vladaar
Heroes sound extras
Author: Vladaar
Submitted by: Vladaar
6Dragons 4.3
Author: Vladaar
Submitted by: Vladaar
Memwatch
Author: Johan Lindh
Submitted by: Vladaar
Users Online
CommonCrawl, Yahoo!, DotBot

Members: 0
Guests: 14
Stats
Files
Topics
Posts
Members
Newest Member
477
3,705
19,232
608
LAntorcha
Today's Birthdays
There are no member birthdays today.
Related Links
» SmaugMuds.org » Bugfix Lists » SWR FUSS Bugfix List » [Bug] Help editor allows NULL...
Forum Rules | Mark all | Recent Posts

[Bug] Help editor allows NULL topic string to be edited
< Newer Topic :: Older Topic >

Pages:<< prev 1 next >>
Post is unread #1 May 1, 2006, 8:40 pm
Go to the top of the page
Go to the bottom of the page

Samson
Black Hand
GroupAdministrators
Posts3,639
JoinedJan 1, 2002

Bug: Help editor allows NULL topic string to be edited
Danger: Critical - Leads to a crash
Found by: Halcyon
Fixed by: The Smaug Devs

---

act_info.c, do_hedit

Locate:
   if( ( pHelp = get_help( ch, argument ) ) == NULL ) /* new help */
   {
      char argnew[MAX_INPUT_LENGTH];
      int lev;

      if( isdigit( argument[0] ) )
      {
         lev = number_argument( argument, argnew );
         argument = argnew;
      }
      else
         lev = get_trust( ch );
      CREATE( pHelp, HELP_DATA, 1 );
      pHelp->keyword = STRALLOC( strupper( argument ) );
      pHelp->text = STRALLOC( "" );
      pHelp->level = lev;
      add_help( pHelp );
   }


Change to:
   if( ( pHelp = get_help( ch, argument ) ) == NULL ) /* new help */
   {
      HELP_DATA *tHelp;
      char argnew[MAX_INPUT_LENGTH];
      int lev;
      bool new_help = TRUE;

      for( tHelp = first_help; tHelp; tHelp = tHelp->next )
         if( !str_cmp( argument, tHelp->keyword ) )
         {
            pHelp = tHelp;
            new_help = FALSE;
            break;
         }
      if( new_help )
      {
         if( isdigit( argument[0] ) )
         {
            lev = number_argument( argument, argnew );
            argument = argnew;
         }
         else
            lev = get_trust( ch );
         CREATE( pHelp, HELP_DATA, 1 );
         pHelp->keyword = STRALLOC( strupper( argument ) );
         pHelp->text = STRALLOC( "" );
         pHelp->level = lev;
         add_help( pHelp );
      }
   }


The topic field for the hedit command is never checked to see if it is NULL and later trying to edit the same thing again will crash the system. This was one of the bugfixes that was introduced in Smaug 1.4a when it came out, so fixing it just meant copying what they already did.
       
Pages:<< prev 1 next >>