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???Please read - PHP input using get and securing it.???
Old 06-03-2008, 01:13 AM ???Please read - PHP input using get and securing it.???
goheadtry's Avatar
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Posts: 730
Name: John
Location: United States of America, California
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Okay I have the following code and I only want it to except text strings no commands etc.
PHP Code:
  $title $_GET['title'];
  
$descr $_GET['descr'];
  
$src $_GET['src']; 
How do I do this?

PHP Code:
<?php
  
  $filepath 
'/home/forbushj/www/vidtemp/';
  
$filetypes = array('video/x-ms-asf''video/x-msvideo''video/x-flv''video/quicktime''video/mp4''video/mpeg''video/x-ms-wmv');
  
$error_msg '';
  
$title $_GET['title'];
  
$descr $_GET['descr'];
  
$src $_GET['src'];
  
// Check for errors:
  
if ($uploaded_size 350000$error_msg .= 'Your file is too large.<br />';
  if (!
in_array($uploaded_type$filetypes)) $error_msg .= 'You may only upload movies.<br />';
  
  if (
$error_msg)
  {
    echo 
$error_msg 'Sorry your file was not uploaded';
  }
  else if (
move_uploaded_file($_FILES['uploaded']['tmp_name'], $target))
  {
    
$file $_FILES['uploaded']['tmp_name'];
    
$ext substr($file, ((strrpos($file'.') !== false) ? strrpos($file'.') : strlen($file)), strlen($file));
    
$filename date('Y-m-d-H-i-s') . '_' str_replace(' ''_'basename($file$ext));
    
$filename preg_replace('/[\\\/:*?"<>|]/'''$filename);
    
    if (
is_file($filepath $file))
    {
      
$output = array();
      
      
exec('ffmpeg -i "' escapeshellarg($file) . '" -an -ss 00:00:03 -t 00:00:01 -r 1 -y -s 150x100 -f mjpeg "/home/forbushj/www/pic/video/' escapeshellarg($filename) . '.jpg"'$output$exit_code_pic);
      
exec('ffmpeg -i "' escapeshellarg($file) . '" -ar 22050 -ab 32 -f flv -s 320x240 "/home/forbushj/www/vidd/' escapeshellarg($filename) . '.flv"'$output$exit_code_vid);
      
      if (!
is_array($output)) $error_msg 'Sorry, there was a problem uploading your file.';
      
      if (
$exit_code)
      {
        
error_log('ffmpeg exec returned ' $exit_code);
        
$error_msg 'Sorry, there was a problem uploading your file.';
      }
      
      if (!
$error_msg)
      {
mysql_connect("localhost""REMOVED""REMOVED") or die(mysql_error());
        
mysql_query("
          INSET INTO forbushj_onetest.video (title, descr, pic, locat, src)
          VALUES (
            '" 
mysql_real_escape_string($title) . "',
            '" 
mysql_real_escape_string($descr) . "',
            '" 
mysql_real_escape_string($filename ".jpg") . "',
            '" 
mysql_real_escape_string($filename ".flv") . "',
            '" 
mysql_real_escape_string($src) . "'
          )
        "
);
        echo 
"upload successful";
      }
    }
    else
    {
      
$error_msg 'Sorry, there was a problem uploading your file.';
    }
  }
  else
  {
    
$error_msg 'Sorry, there was a problem uploading your file.';
  }
  
  if (
$error_msg) echo $error_msg;
  
?>
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Old 06-03-2008, 01:17 PM Re: ???Please read - PHP input using get and securing it.???
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Name: Andy
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Do you mean something like $title = addslashes($_GET['title']); to stop people putting commands in your form?

Not quite sure what your asking...
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Old 06-03-2008, 06:36 PM Re: ???Please read - PHP input using get and securing it.???
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Yes, how is it done?
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Old 06-03-2008, 07:13 PM Re: ???Please read - PHP input using get and securing it.???
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Name: Andy
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Like that.

$title = addslashes($_GET['title']);
$descr = addslashes($_GET['descr']);
$src = addslashes($_GET['src']);

It stops anyone using a ' or " to inject code into your script.

It will also escape legitimate 's. So "Jeffery's house" becomes "Jeffery\'s house". Make sure you then use stripslashes($src) when you want to output the data.
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Old 06-04-2008, 01:01 AM Re: ???Please read - PHP input using get and securing it.???
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Actualy, http://us2.php.net/manual/en/functio...ape-string.php will be useful.
Also http://www.webmaster-talk.com/php-fo...injection.html and http://www.webmaster-talk.com/php-fo...s-attacks.html
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PHP Code:
<?php echo "Hello World"?>
HTML Code:
<html><head><title>Hello World</title></head><body><p>Hello World</p></body></html>
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