How to store only zip files downloaded from other website

Question

I am building a application based in codeigniter. Here I need to download only files that have .zip extension and upload in my local drive. But to do it I had been given a function named get_zip contents are as follows:

<?php
function get_file($file, $localpath, $newfilename)
{
    $err_msg = '';
    $out = fopen($localpath.$newfilename,"wb");
    if ($out == FALSE){
        print "File not opened<br>";
        exit;
    }

    $ch = curl_init();

    curl_setopt($ch, CURLOPT_FILE, $out);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_URL, $file);

    curl_exec($ch);
    if( curl_error($ch) )
    {
        echo "<br>Error is : ".curl_error ( $ch);
    }


    curl_close($ch);
    //fclose($ch);
    return $localpath.$newfilename;

}//end function


function directory_map_echo($source_dir, $directory_depth = 0, $hidden = FALSE)
{
    if ($fp = @opendir($source_dir))
    {
        $filedata   = '';
        $new_depth  = $directory_depth - 1;
        $source_dir = rtrim($source_dir, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR;

        while (FALSE !== ($file = readdir($fp)))
        {
            // Remove '.', '..', and hidden files [optional]
            if ( ! trim($file, '.') OR ($hidden == FALSE && $file[0] == '.'))
            {
                continue;
            }

            if (($directory_depth < 1 OR $new_depth > 0) && @is_dir($source_dir.$file))
            {
                $filedata .= 'directory:'.$file.directory_map($source_dir.$file.DIRECTORY_SEPARATOR, $new_depth, $hidden);
            }
            else
            {
                $filedata .= $file;
            }
        }

        closedir($fp);
        return $filedata;
    }

    return FALSE;
}

But the problem is how I can restrict that only .zip files will be downloaded and uploaded to my local drive.

You could get the extension off the end of the filename and check to see if it is .zip or not... Have you tried anything? — scrappedcola, Sep 21 '12 at 20:04
For this I would recommend using [DirectoryIterator](http://php.net/manual/en/class.directoryiterator.php) or for PHP 5.3 >= [FilesystemIterator](http://php.net/manual/en/class.filesystemiterator.php) — dbf, Sep 21 '12 at 20:09

score 1 · Answer 1 · edited May 23 '17 at 12:12

1

Since the filename is just a string you could use/modify the answer from this SO question:

$rex = "/^.*\.(zip)$/i";
preg_match($rex, $file)

Edit:

For error codes try:

$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 if($httpCode == 404){ //do some error handling }

edited May 23 '17 at 12:12

Community

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1

answered Sep 21 '12 at 20:11

scrappedcola

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Thanks but how can i make sure its a file i mean if the address of the site is wrong then it displays a error page and that file is being uploaded For example return http://stackoverflow.com/test.zip the files does not belong it just uploading the page not found file – user1684080 Sep 21 '12 at 20:31
You can check the status of your curl call and see what the status of the call is. http://php.net/manual/en/book.curl.php. In the comments check out the comment by frank at interactinet dot com 11-Mar-2011 01:29. – scrappedcola Sep 21 '12 at 20:50

How to store only zip files downloaded from other website

1 Answers1