I would like to start a upload and download website for huge files (up to 1gb). I thought that it would be better to download the files using FTP (with PHP), because this protocol is especially used for these types of transfers.
The cliënt gets an email, including a download link to download the file (like yousendit.com). When they click on the link a download box appears. My problem is that I don't know how to show a download box using ftp and php. I have read that it isn't possible to immediately download a file by PHP, using FTP. Is this correct?
Do I have to create a temporary files on the server to let the client download the file? If yes, is this also a good solution for huge files?
What do you advice me to give the clients the possibility to download these huge files?
Thanks for your reply!
You can generate unique address based on session_id (create this folder on runtime and move huge file there) and redirect user to this link
For example, you have file huge.tgz
1. Send you client link http://***/user/john/file/huge.tgz
2. Ask user for auth in this page if they lost session
3. get session id
4. create on your server folder with name equals session id and move huge.tgz here
5. redirect user to unique ftp link ftp://***/17oe5kf8iYmpt66bjs89hcuo83/huge.tgz
You should disallow list files and directories on ftp server
Can't you send them an FTP link ? Why do you need PHP?
ftp://ftp12.freebsd.org/pub/FreeBSD/ls-lR.gz
You probably want to use PHP to handle everything but the file transfer. Once you have done all the checks you want you can redirect the browser to the file specifying the protocol as ftp. though you won't be able to have a progression bar in your site, the browser/ftp app will probably display one.
Related
I'm developing a new website with PHP & MySQL.
The website is for an online eBook library that grant access to its books based on paid subscription plans.
So, I need to make sure the PDF files of these books are well protected and can't be saved, downloaded, or in anyway copied.
How can I do that?
I suggest you to convert the PDF into an image , and display the first page or as you like, check this library it can be useful
Imagemagick
I think this is not a PHP or MYSQL solution. PDF's have a "protected mode". There you can disable printing the pdf. You should look for a server side pdf recreation tool that can recreate the pdf in protected mode and serve the user this file. Take a deeper look into PDF functions. I think i can remember that there should also a trial mode also and the ability to view only on 1 device.
Here a link for more info: http://www.dummies.com/software/adobe/acrobat/restrict-who-can-edit-or-print-pdf-documents/
You'll be able lock down the files from unwanted downloads. But redistribution or sharing login details will be a battle.
Some options I can think of
Option 1:
You can handle this yourself on the server. Housing the PDFs outside of the public Apache directory (so there is no way a URL can reach it). Then with a PHP function read the contents of the file and stream it to the browser.
Streaming a large file using PHP
Option 2:
Use something like AWS S3. You can lock down the bucket so there is no public access. And generate signed URLs as needed. They'll be unique urls which you can specify a time limit of availablity. AWS S3 The security of a signed URL as a hyperlink
I sell video in my website. users must pay to have access to files (to download or stream them online)
problem: the video files are not on my main server! i store them on another server.(special server for download. i don't want to use the bandwidth of my main server) i don't want to provide the users with the direct link. (not to let them share the links with others...). how can i let them to download the files or stream the videos without giving them the direct links?
points:
- I can not have database(mysql) in my download server.
- i don't want to use the bandwidth of my main site. just checking payments and controlling user accounts.
- streaming is not so important. but i have to let them download the files.
- i have seen in woo commerce plugin(wordpress) which creates temporary download links even for remote server. i checked solutions for temp download link but all works for the same server not remote one....
The easiest way I think this could happen is:
The public server must be able to establish an SSH (preferably) connection to the other server with appropriate permissions.
Upon successful request, create a random symlink pointing to the original file.
Store the symlink filename in a database, and save the user's IP as well - or some other unique identifier (or md5'd IP + User Agent - it's up to you).
If the request is valid (matches the record in the database), let him download the file. Otherwise redirect him to an error page.
Set up a cron to delete symlinks older than X hours.
I'm trying to build a basic web application using the Dropbox API. I have the file upload/folder listing etc. working but cannot find in the documentation how to force the file to download to the user's browser. Is this possible?
If it is can someone point me in the right direction? I'm using the standard PHP SDK.
Dropbox.com: How do I force a file to download from the web
Force a file or folder to download
To cause the browser to download a file or folder rather than display
it, you can use dl=1 as a query parameter in your URL. For example:
https://www.dropbox.com/s/qmocfrco2t0d28o/Fluffbeast.docx?dl=1 Note
that the original share link URL may contain query string parameters
already (e.g. dl=0), so app developers should make sure to properly
parse the URL and add or modify parameters as needed.
And if that doesn't suffice you can check Wikihow: How to Force a File to Download from the Web on Dropbox, with nice screenshots.
If this is not what you had in mind you have clarified that in your question. You still can do that now.
I am making an online streaming website where users can listen to audio or video files. Currently I am calling an mp3 file in an audio tag using below code.
Play
In my website a user can stream a song but cannot download it. DOWNLOADS ARE PAID. Above code is the worst thing to stream an audio file because when a user copies and pastes the above link on his browser, the song will be downloaded.
How can I securely stream the file without URL download option(user cannot copy the song url and download it).
I am using CodeIgniter(PHP framework), so how can I restrict a user to download the file directly.
You can use some .htaccess to direct all download requests to your PHP Script and not call the real files. Then your script can validate if the user is logged in, only then it will issue a download response. Otherwise even if someone gets the url it won't work for them because the request goes to your PHP Script and file itself is not served automatically
Take a look at this Create temporary URLs. You can do similar for your domain as well.
I have an ASP page, in which the user chooses a value (e.g drawingId) from a list box, and according to this value, ASP builds/calculates a file path, e.g. c:\drawings\file1.pdf, in order to show this pdf file to the user. This path refers to the client's computer, where these pdf files are stored. The server queries the database and knows only the association between the drawingId and the path at the client's computer.
How can I open this pdf file?
I've read similar questions, like How can my web application written in Java open a file on the client side? or Can javascript access a filesystem?, but I haven't understood how to proceed.
I would like this to work with all browsers and also implement this functionality in a PHP site.
Use file:///
e.g. file:///c:/filename.pdf
Well I guess after user selects option from a list box, you could construct the path and redirect user to that path which should open the pdf file
eg.
file:///C:/foldername/filename.pdf
it not possible to open client side file from server side code as it running at server side, also due to some security reason browser does not allow to browse client location
refer link Open local folder from link