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Thread: Email header how to fix it

  1. #1
    Join Date
    Aug 2013
    Posts
    40

    Email header how to fix it

    Hi All,

    I am on the project of email attachment where i am facing some strange problem, my email attachment is working fine when i upload my php script to my personal hosting server, but when i test the similar php script inside of my company network the attachment arrived in the corrupt form, i don't know where is the problem and how to fix it .

    Code:
    <html>
    <head>
    <title>Sending attachment using PHP</title>
    </head>
    <body>
    	<?php //echo dirname(__FILE__); ?>
    <?php
    $max_allowed_file_size = 10000000; // size in KB 
    $allowed_extensions = array("jpg", "jpeg", "gif", "bmp", "doc", "docx");
    $upload_folder = 'upload/'; //<-- this folder must be writeable by the script
    $your_email = 'test@abc.com';//<<--  update this to your email address
    
    $errors ='';
    //Get the uploaded file information
    	$name_of_uploaded_file =  basename($_FILES['attachment']['name']);
    	
    	//get the file extension of the file
    	$type_of_uploaded_file = substr($name_of_uploaded_file, 
    							strrpos($name_of_uploaded_file, '.') + 1);
    	
    	$size_of_uploaded_file = $_FILES["attachment"]["size"]/1024;
    	
    	///------------Do Validations-------------
    	/*if(empty($_POST['name'])||empty($_POST['email']))
    	{
    		$errors .= "\n Name and Email are required fields. ";	
    	}*/
    	/*if(IsInjected($visitor_email))
    	{
    		$errors .= "\n Bad email value!";
    	}*/
    	
    	if($size_of_uploaded_file > $max_allowed_file_size ) 
    	{
    		$errors .= "\n Size of file should be less than $max_allowed_file_size";
    	}
    	
    	//------ Validate the file extension -----
    	$allowed_ext = false;
    	for($i=0; $i<sizeof($allowed_extensions); $i++) 
    	{ 
    		if(strcasecmp($allowed_extensions[$i],$type_of_uploaded_file) == 0)
    		{
    			$allowed_ext = true;		
    		}
    	}
    	
    	if(!$allowed_ext)
    	{
    		$errors .= "\n The uploaded file is not supported file type. ".
    		" Only the following file types are supported: ".implode(',',$allowed_extensions);
    	}
    	
    	//send the email 
    	if(empty($errors))
    	{
    		//copy the temp. uploaded file to uploads folder
    		$path_of_uploaded_file = $upload_folder . $name_of_uploaded_file;
    		$tmp_path = $_FILES["attachment"]["tmp_name"];
    		
    		if(is_uploaded_file($tmp_path))
    		{
    		    if(!copy($tmp_path,$path_of_uploaded_file))
    		    {
    		    	$errors .= '\n error while copying the uploaded file';
    		    }
    		}
    
    
      $to = "test@xyz.com";
      $subject = "Testing";
      $message = htmlspecialchars($_POST['comments']);
      # Open a file
      $file = fopen( "upload/".$name_of_uploaded_file, "r" );
      if( $file == false )
      {
         echo "Error in opening file";
         exit();
      }
    
      # Read the file into a variable
      $size = filesize("upload/".$name_of_uploaded_file);
      $content = fread( $file, $size);
      fclose($file);
    
      # encode the data for safe transit
      # and insert \r\n after every 76 chars.
      $encoded_content = chunk_split(base64_encode($content));
      
      # Get a random 32 bit number using time() as seed.
      $num = md5( time() );
    
      # Define the main headers.
      $header = "From:$your_email\r\n";
      $header .= "MIME-Version: 1.0\r\n";
      $header .= "Content-Type: multipart/mixed; ";
      $header .= "boundary=$num\r\n";
      $header .= "--$num\r\n";
    
      # Define the message section
      $header .= "Content-Type: text/plain\r\n";
      $header .= "Content-Transfer-Encoding:8bit\r\n\n";
      $header .= "$message\r\n";
      $header .= "--$num\r\n";
    
      # Define the attachment section
      $header .= "Content-Type:  multipart/mixed; ";
      $header .= "name=\"$name_of_uploaded_file\"\r\n";
      $header .= "Content-Transfer-Encoding:base64\r\n";
      $header .= "Content-Disposition:attachment; ";
      $header .= "filename=\"$name_of_uploaded_file\"\r\n\n";
      $header .= "$encoded_content\r\n";
      $header .= "--$num--";
    
      # Send email now
      $retval = mail ( $to, $subject, $message, $header );
      if( $retval == true )
       {
          echo "Messageaahh sent successfully...";
       }
       else
       {
          echo "Message could not be sent...";
       }
     }  
    ?>
    </body>
    </html>

  2. #2
    Join Date
    Aug 2013
    Posts
    40
    Its happened with word files, pdf files but not with txt, png, bmp files

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