In development - Backpack

boionfire81 · April 25, 2016

So I'm working on a backpack system. The idea is members will buy more space for their backpack with crystals (or my case credits). And when traveling they will only be able to access the items they have in their backpack. But getting the items transferred to the backpack is an issue. Here's the form that I have for the transfer

<?php

require_once('globals.php');

global $db, $userid, $ir;

$_GET['ID'] =
       (isset($_GET['ID']) && is_numeric($_GET['ID']))
               ? abs(intval($_GET['ID'])) : '';
$_GET['user'] =
       (isset($_GET['user']) && is_numeric($_GET['user']))
               ? abs(intval($_GET['user'])) : '';
$_POST['qty'] =
       (isset($_POST['qty']) && is_numeric($_POST['qty']))
               ? abs(intval($_POST['qty'])) : '';
if (!empty($_POST['qty']) && !empty($_GET['user']))
{
   $id =
           $db->query(
                   "SELECT `inv_qty`, `inv_itemid`, `itmname`, `itmid`
                    FROM `inventory` AS `iv`
                    INNER JOIN `backpack` AS `it`
                    ON `iv`.`inv_itemid` = `it`.`itmid`
                    WHERE `iv`.`inv_id` = {$_GET['ID']}
                    AND iv.`inv_userid` = {$_GET['user']}
                    LIMIT 1");
   if ($db->num_rows($id) == 0)
   {
       echo 'Invalid item ID';
   }
   else
   {
       $r = $db->fetch_row($id);        
       $space = ($ir['maxbackpack'] - $ir['backpack']);
       $m =
               $db->query(
                       "SELECT `lastip`,`username`
                        FROM `users`
                        WHERE `userid` = {$_POST['user']}
                        LIMIT 1");
       if (!isset($_POST['verf'])
               || !verify_csrf_code("senditem_{$_GET['ID']}",
                       stripslashes($_POST['verf'])))
       {
           echo '<h3>Error</h3><hr />
              This transaction has been blocked for your security.<br />
           Please send items quickly after you open the form - do not leave it open in tabs.<br />
           > <a href="itemsend.php?ID=' . $_GET['ID'] . '">Try Again</a>';
           die($h->endpage());
       }
       else if ($_POST['qty'] > $r['inv_qty'])
       {
           echo 'You are trying to pack more than you have!';
       }
       else if ($_POST['qty'] > $space)
       {
       echo 'You do not have that much room in your backpack';
       }
       else
       {
           $rm = $db->fetch_row($m);
           item_remove($userid, $r['inv_itemid'], $_POST['qty']);
           $db->query("INSERT INTO `backpack`(`inv_id`, `inv_itemid`, `inv_userid`, `inv_qty`, `inv_lent`, `equip_helmet`, `equip_boots`, `equip_amulet`, `equip_braclet`, `equip_ring`, `equip_special`) VALUES ('',{$_POST['itemid']},{$_POST['userid']},{$_POST['qty']},'','','','','','','')");
           echo 'You packed ' . $_POST['qty'] . ' ' . $r['itmname'] . '(s)';

                   }
       $db->free_result($m);
   }
   $db->free_result($id);
}
else if (!empty($_GET['ID']))
{
   $id =
           $db->query(
                   "SELECT `inv_qty`, `itmname`
                    FROM `inventory` iv
                    INNER JOIN `items` AS `it`
                    ON `iv`.`inv_itemid` = `it`.`itmid`
                    WHERE `iv`.`inv_id` = {$_GET['ID']}
                    AND `iv`.`inv_userid` = $userid
                    LIMIT 1");
   if ($db->num_rows($id) == 0)
   {
       echo 'Invalid item ID';
   }
   else
   {
       $r = $db->fetch_row($id);
       $code = request_csrf_code("senditem_{$_GET['ID']}");
       $space = ($ir['maxbackpack'] - $ir['backpack']);
       echo "
       <b>Enter how many {$r['itmname']} you want to pack.
           You have {$r['inv_qty']} and $space spaces available.</b>
       <br />
       <form action='packit.php' method='post'>

           Quantity: <input type='text' name='qty' value='' />
           <br />
           <input type='hidden' name='userid' value='{$_GET['user']}' />
           <input type='hidden' name='ID' value='{$_GET['ID']}'>
           <input type='hidden' name='verf' value='{$code}' />
           <input type='submit' value='Pack' />
       </form>
          ";
   }
   $db->free_result($id);
}
else
{
   echo 'Invalid use of file.';
}
$h->endpage();

with the inventory page having this link

<a href='packit.php?user={$ir['userid']}&ID={$i['inv_id']}' class='button'>Pack</a>

but every submit is a invalid use. btw this is my code, mixed with a multitracker, and the itemsend. Thus the reason, I'm confused here.

Edited April 25, 2016 by boionfire81

Zettieee · April 25, 2016

You don't need to get the user's ID...

TheMasterGeneral · April 25, 2016

Yeah, get rid of the user={$ir['userid']}. You can call the user's ID using {$userid} inside the code itself.

Basic troubleshooting tells me that you should first echo out the variables you're testing for at the top of the page after they're sanitized.

echo $_GET['ID'];
echo $_GET['user'];

If any of those return nothing, that means you need to recheck your link you setup.

I do believe its 100% how you have your conditional setup.

Change:

if (!empty($_POST['qty']) && !empty($_GET['user']))

To:

if ((!empty($_POST['qty'])) && (!empty($_GET['user'])))

Let me know the results.

Edited April 25, 2016 by TheMasterGeneral

boionfire81 · April 26, 2016

yeah, it's in the link structure.

{$i['inv_id']}

produces the inventory item id. Not the general item id.

But, on submit it echos invalid use, maybe because it needs to go to backpack.php afterwards instead of reloading the same page?

boionfire81 · April 26, 2016

Ok, UPDATE

else
       {

           item_remove($userid, $_GET['ID'], $_POST['qty']);
           $db->query("INSERT INTO `backpack`(`inv_id`, `inv_itemid`, `inv_userid`, `inv_qty`, `inv_lent`, `equip_helmet`, `equip_boots`, `equip_amulet`, `equip_braclet`, `equip_ring`, `equip_special`) VALUES ('{$_POST['ID']}',{$_POST['ID']},{$userid},{$_POST['qty']},'','','','','','','')");
           echo 'You packed ' . $_POST['qty'] . ' ' . $r['itmname'] . '(s)';

                   }

A critical error has occurred, and page execution has stopped. Below are the details:

1052: Column 'inv_qty' in field list is ambiguous

Action taken: Attempted to execute query: SELECT `inv_qty`, `inv_itemid`, `itmname`, `itmid`, `inv_id`

FROM `inventory` AS `iv`

INNER JOIN `backpack` AS `it`

ON `iv`.`inv_itemid` = `it`.`itmid`

WHERE `iv`.`inv_id` = 156

AND iv.`inv_userid` = 1

LIMIT 1

KyleMassacre · April 26, 2016

do you have inv_qty in your backpack and inventory table? If so, it may not know which one you are talking about so you need to prefix your column names in your select with the table alias'. Much like: select iv.inv_qty, etc, etc

boionfire81 · April 26, 2016

ok changed all instances of inv_ to bp_ in phpmyadmin

modified the item insert to

$db->query("INSERT INTO `backpack`(`bp_id`, `bp_itemid`, `bp_userid`, `bp_qty`, `bp_lent`, `bp_helmet`, `bp_boots`, `bp_amulet`, `bp_braclet`, `bp_ring`, `bp_special`) VALUES ('',{$_POST['ID']},{$userid},{$_POST['qty']},'','','','','','','')");

but not sure about how to mod this part

$id =
           $db->query(
                   "SELECT `inv_qty`, `itmname`
                    FROM `inventory` iv
                    INNER JOIN `items` AS `it`
                    ON `iv`.`inv_itemid` = `it`.`itmid`
                    WHERE `iv`.`inv_id` = {$_GET['ID']}
                    AND `iv`.`inv_userid` = $userid
                    LIMIT 1");

as is it gives this error:

A critical error has occurred, and page execution has stopped. Below are the details:

1054: Unknown column 'itmname' in 'field list'

Action taken: Attempted to execute query: SELECT `inv_qty`, `inv_itemid`, `itmname`, `itmid`, `inv_id`

FROM `inventory` AS `iv`

INNER JOIN `backpack` AS `bp`

ON `iv`.`inv_itemid` = `bp`.`itmid`

WHERE `iv`.`inv_id` = 156

AND iv.`inv_userid` = 1

LIMIT 1

Coly010 · April 26, 2016

unless itmname is a field in your backpack you are trying to access a field that doesn't exist. Consider joining the items table

boionfire81 · April 26, 2016

Yeah, I'm not good with Inner joins. So here is the new pack it file.

<?php
/*********
Created by: Boi
Fixed By: MWG Community
This is a FREE mod
for McCodes V2
Distribution is ok BUT
It is NOT to be sold
**********/
require_once('globals.php');

global $db, $userid, $ir;

$_GET['ID'] =
       (isset($_GET['ID']) && is_numeric($_GET['ID']))
               ? abs(intval($_GET['ID'])) : '';
$_POST['qty'] =
       (isset($_POST['qty']) && is_numeric($_POST['qty']))
               ? abs(intval($_POST['qty'])) : '';
if (!empty($_POST['qty']) && !empty($_POST['ID']))
{
   $id =
           $db->query(
                   "SELECT `inv_qty`, `inv_itemid`, `itmname`, `itmid`, `inv_id`, `bp_qty`, `bp_itemid`, `bp_id`
                    FROM `inventory` AS `iv`
                    INNER JOIN `items` AS `it`
                    ON `iv`.`inv_itemid` = `it`.`itmid`
                    INNER JOIN `backpack` AS `bp`
                    ON `iv`.`inv_itemid` = `bp`.`bp_itemid`
                    WHERE `iv`.`inv_id` = {$_POST['ID']}
                    AND `bp`.`bp_id` = {$_POST['ID']}
                    AND iv.`inv_userid` = {$userid}
                    LIMIT 1");

   if ($db->num_rows($id) == 0)
   {
       echo 'Invalid item ID';
   }

   else
   {
       $r = $db->fetch_row($id);        
       $space = ($ir['maxbackpack'] - $ir['backpack']);

       if ($_POST['qty'] > $r['inv_qty'])
       {
           echo 'You are trying to pack more than you have!';
       }
       else if ($_POST['qty'] > $space)
       {
       echo 'You do not have that much room in your backpack!';
       }
       else
       {

           item_remove($userid, $_GET['ID'], $_POST['qty']);
           $db->query("INSERT INTO `backpack`(`bp_id`, `bp_itemid`, `bp_userid`, `bp_qty`, `bp_lent`, `bp_helmet`, `bp_boots`, `bp_amulet`, `bp_braclet`, `bp_ring`, `bp_special`) VALUES ('',{$_POST['ID']},{$userid},{$_POST['qty']},'','','','','','','')");
           echo 'You packed ' . $_POST['qty'] . ' ' . $r['itmname'] . '(s)';

                   }

   }
   $db->free_result($id);
}
else if (!empty($_GET['ID']))
{
   $id =
           $db->query(
                   "SELECT `inv_qty`, `itmname`
                    FROM `inventory` iv
                    INNER JOIN `items` AS `it`
                    ON `iv`.`inv_itemid` = `it`.`itmid`
                    WHERE `iv`.`inv_id` = {$_GET['ID']}
                    AND `iv`.`inv_userid` = $userid
                    LIMIT 1");
   if ($db->num_rows($id) == 0)
   {
       echo 'Invalid item ID';
   }
   else
   {
       $r = $db->fetch_row($id);
       $space = ($ir['maxbackpack'] - $ir['backpack']);
       echo "
       <b>Enter how many {$r['itmname']} you want to pack.
           You have {$r['inv_qty']} and $space spaces available.</b>
       <br />
       <form action='packit.php' method='post'>

           Quantity: <input type='text' name='qty' value='' />
           <br />
           <input type='hidden' name='userid' value='{$userid}' />
           <input type='hidden' name='ID' value='{$_GET['ID']}'>
           <input type='submit' value='Pack' />
       </form>";

       }
       echo $_GET['ID'];


   $db->free_result($id);
}
else
{
   echo 'Invalid use of file.';
}
$h->endpage();

now it is Invalid item ID

Edited April 26, 2016 by boionfire81

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