Re: Questions about FORK.

I am doing something similar for my accounts. Seperate account file with a 
email validation. Haven't created an automated pfile/account cleaner yet, 
but might get there. What I'm trying to do though is make sure that people 
don't create multiple accounts by using the email address as a unique 
identifier. Now in todays world with 300 free places to get email I know 
this is only a deterent, but it's still something I want to do. I just don't 
want the mud to hang when it scans through all the account files, especially 
if we end up with several hundred or something from new players that didn't 
stick around or what have you.

Any help with using pthreads or any other option would be helpful.

Thanks for the tip on fork() not passing stuff between instances. I didn't 
know it wouldn't do that, especially since you can pass the output back and 
forth using the descriptor.

- Valnir

----- Original Message ----- 
From: "Dale Kinston" <[email protected]>
To: <[email protected]>
Sent: Tuesday, August 15, 2006 1:19 PM
Subject: RE: Questions about FORK.


> I'm not sure how large your player base is, so I don't know how many 
> account
> files you might be fly through but I had a couple of small suggestions. 
> That
> might help you out with your not wanting duplicates and what not.
>
> What I did back on my own mud's account code. I required my players to
> supply valid email addresses. To accomplish this I had them input an email
> in. The code then generated a random "verification code" and emailed it to
> the player. The account then had 7 days from that time to enter that code
> into one of there characters to validate their account. After which my
> pfilecleaner would clean out any invalidated accounts.
>
> Also to save some time again I'm not sure how you do your accounts. But I
> gave each account it's own directory. Then in each folder had a
> <accountname>.acc file in it. I stored just basic information in that 
> file:
>
> #ACCOUNT
> Name  Sarix~
> Email [email protected]~
> Code  Verifyed~
> Code_time 0
> Pass  rommailinglist~
> Flags A
> LogO 1037392543
> Default Sarix~
> Trust 210
> #END
>
> End
> #$
>
> That way when I had to scan I only had to open a small file and quickly 
> grab
> the needed information out that. I never had to use threats or fork, for 
> any
> of my account code or my pfilecleaner, (which was a scrip that ran through
> my entire player file directory found accounts/pfiles that were old and 
> not
> being used and would delete them.)
>
> Figured I would throw out some ideas that might help.
>
> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On Behalf Of Valnir
> Sent: Tuesday, August 15, 2006 10:36 AM
> To: [email protected]
> Subject: Questions about FORK.
>
> Ok.. I'm working on an account system, and want to make sure that no two
> accounts have the same email address. Don't want users having duplicate
> accounts. The issue I'm having is that during account creation I'm 
> scanning
> all the existing user accounts to see if any have the same address. I'm
> using fork() so that I don't have the entire mud come to a screeching halt
> while it scans, but for some reason, although everything in the fork() 
> seems
>
> to be working fine, it doesn't set the d->connected correctly or process 
> the
>
> nanny function again at the end the way I'm wanting it to. Ideas? Thansk!
>
> - Valnir
>
> /* Code snippet */
>
> void check_dup_email ( DESCRIPTOR_DATA *d, char *email )
> {
>    DIR *user_dir;
>    struct dirent *users;
>    USER_DATA *usr;
>    char name[MIL];
>    char buf[MSL];
>    bool duplicate = FALSE;
>    int f;
>
>    if ( ( f = fork() ) == (-1) )
>    {
>        write_to_buffer( d, "\n\r\n\r", 0 );
>        write_to_buffer( d, "An error occured while trying to validate your
> email address!\n\r", 0 );
>        write_to_buffer( d, "You will not be able to complete continue
> creating your account\n\r"
>            "until this problem is solved. The staff has been
> contacted.\n\r\n\r"
>            "Please check back soon!\n\r\n\r"
>            "^e[^fPress Return to Disconnect^e]^0\n\r", 0 );
>
>        d->connected = CON_USER_DISCONNECT;
>        bug( "fork() failed in check_dup_email.", 0 );
>        do_bug( NULL, "fork() failed in check_dup_email." );
>        return;
>    }
>
>    if ( !f )
>    {
>        write_to_buffer( d, "Please wait while we scan for duplicate
> accounts.", 0 );
>        process_output( d, FALSE );
>
>        if ( ( user_dir = opendir(USER_DIR) ) != NULL )
>        {
>            while ( ( users = readdir(user_dir) ) != NULL )
>            {
>                write_to_buffer( d, ".", 0 );
>
>                if ( !str_cmp( users->d_name, "." )
>                || !str_cmp( users->d_name, ".." ) )
>                    continue;
>
>                if ( !strstr( users->d_name, ".usr" ) )
>                    continue;
>
>                /* get name from file filename - still need to parse the
> '.usr' off the filename */
>
>                if ( ( usr = load_account( NULL, name ) ) != NULL )
>                {
>                    if ( !str_cmp( usr->email, email ) )
>                    {
>                        sprintf( buf, "Attempt to use duplicate email
> address detected. "
>                            "Same as '%s'.", usr->name );
>                        log_string( buf );
>                        duplicate = TRUE;
>                    }
>                }
>
>                unload_account( NULL, usr);
>                process_output( d, FALSE );
>
>                if ( duplicate )
>                    break;
>            }
>        }
>        else
>            bug( "Could not open USER_DIR!", 0 );
>
>        closedir( user_dir );
>        write_to_buffer( d, "\n\r\n\r", 0 );
>
>        if ( duplicate )
>        {
>            write_to_buffer( d, "Duplicate email found! We do not allow
> multiple accounts\n\r"
>                "per player. If you have forgotten your account name, 
> please
>
> contact\n\r"
>                "the staff at http://www.legendofthenobles.com/?page=email
> to request\n\r"
>                "your account name.\n\r\n\r"
>                "^e[^fPress Return to Disconnect^e]^0\n\r", 0 );
>
>            process_output( d, TRUE );
>            d->connected = CON_USER_DISCONNECT;
>        }
>        else
>        {
>            write_to_buffer( d, "No duplicate found.\n\r", 0 );
>            process_output( d, TRUE );
>
>            d->connected = CON_CONFIRM_EMAIL;
>            nanny( d, email );
>        }
>
>        exit(0);
>    }
>
>    return;
> }
>
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