Re: Best Secure practice for uploading a csv file to import
| From: | Joshua Kehn | Date: | Sat, 19 Oct 2013 23:40:23 +0000 |
| Subject: | Re: Best Secure practice for uploading a csv file to import | ||
| References: | 1 2 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-322326@lists.php.net to get a copy of this message | ||
> On Oct 19, 2013, at 7:06 PM, Ashley Sheridan <ash@ashleysheridan.co.uk> wrote:
>
>> On Sat, 2013-10-19 at 18:57 -0400, Joey J wrote:
>>
>> Hello All,
>>
>> I just wanted to see the best way to securely accomplish this task.
>> when we want to update a DB we upload to a writable directory instead of
>> writing it directly to MySQL, I don't like having writable directories if
>> possible.
>> Is there a right or better way to accomplish this?
>>
>> Thanks!
>
>
> There's nothing inherently wrong with having a directory writeable on
> your web server, but you should ensure it's running with the least
> privileges it requires to complete your task.
>
> So, make sure that the Apache user is also the owner of the directory,
> then you only need to give it 755 permissions (it's always unwise to use
> 777 on a production server).
>
> Another thing you can do is to place the upload directory outside your
> web root so that it's not accessible via a browser.
>
> I can see why you wouldn't want to import it directly into the database
> though. I recently had to "fix" a script of mine because someone thought
> it would be a good idea to change the order of a bunch of fields in a
> CSV, and added a new field in the middle rather than at the end. Having
> a script in between the CSV and the database can ensure some sort of
> data quality check is in-place before importing bad data.
>
> Thanks,
> Ash
> http://www.ashleysheridan.co.uk
Good points by Ash above.
I'd like to mention that because this is user input make sure any database access is escaped
correctly (prepared statements are good) and when/if you output it should all be HTML escaped.
Best,
-Josh
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