I have a website which I'll call website.com that is located on server1. website.com has a field to upload a file. When someone uploads a file on website.com, I don't want the file uploaded to server1, I want it to upload to another server, server2. What is the best way to do this? Can I do this using php, a shell script?
After the file is uploaded to server2, I have a shell script to execute on the file which I will also eventually have to figure out how to run from server1.
I hope this makes sense, thanks in advance.
another possible way to do this is by uploading this file to your website.com site and use CURL to send the image to another server. once this completes you can remove the image again.
see CURL PHP send image for more information.
-- UPDATE --
For SSH connection you need to install additional libraries in order to allow php to make SSH connection. an excellent tutorial can be found here.
-- UPDATE 2 --
The question intrigued me, so i expanded my research. there seems to be another PHP Library phpseclib around on Sourceforge. In the documentation on page 5 there is some information on how it works.
The only good way to make this to work is to read the image to binary, and send it over the the other server, as text and write that into an file, hence creating an image from the source of the original.
Also place the image in a public folder that is accepts calls from your website1 domain, this way you also prevent hot linking your images and saves considerable data.
I also came across this for help with phpseclib.
in the end i wouldnt choose for a solution like this. I would swap your website from server1 to server2, just to keep everything in one place.
Cant you put the script to handle the upload on Server 2?
You can have your HTML pages with the form served for server 1, but call the PHP for the upload from server 2.
Update
For example...
Server 1 has a file index.php which has a form:
<form action='http://server2.com/some_directory/uploader.php' method='POST'>
.... Some form code
</form>
The form on index.php points to a PHP script on server 2, via a URL. That PHP script can now handle the input.
Of course this will only work if server2 is connected accessible from the internet, if not you will have to use some sort of shell script on server 1 to move the files on the internal network when they are uploaded to server 1.
Related
I will try to explain on example.
There're files on the web I publish (let's say, something.pdf or thefile.zip). I want, before actual download when user follows the link to file, some php script to be invoked which then will return the requested file. How to do it? Please advise. Thank you!
Edit 1: thanks amadeus. In my case PHP script is located on the other server than web site and files to download = PHP script will need to read file from remote web server and send to client, which is extra traffic... I actually does not need PHP to control file download. It is ok to have it downloaded from the web server, but I want PHP script to be invoked when download is requested (to gather info on who is downloading and how many times).
Edit 2: thank you Pekka. I just realized that it is even more complex. Imagine server1 is webserver with downloadable files on it (no php), and server2 is php server. If I just give "server1/thefile.zip" I will be unable to invoke script from php server. Then it seems I should use "server2/script.php?thefile.zip" which will then just redirect client to the file on server1. Is it the best implementation in given conditions?
It is ok to have it downloaded from the web server, but I want PHP script to be invoked when download is requested (to gather info on who is downloading and how many times).
That's easy to do by calling
header("location: http://externaldomain.com/externalresource.zip
from your PHP script when you are done counting.
This will redirect the browser to the external resource.
I need to send a file from one PHP page (on which client uploads their files) to another PHP page on another server were files will be finaly stored.
To comunicate now I use JSON-RPC protocol; is it wise to send the file this way?
$string = file_get_contents("uploaded_file_path");
send the string to remote server and then
file_put_contents("file_name", $recieved_string_from_remte);
I understand that this approach takes twice the time than uploading directly to the second server.
Thanks
[edit]
details:
i need to write a service allowing some php (may be joomla) user to use a simple api to upload files and send some other data to my server which analyze them , put in a db and send back a response
[re edit]
i need to create a Simple method allowing the final user to do that, who will use this the interface on server 1 (the uploading) use the php and stop, so remote ssh mount ore strange funny stuff
If I were you, I'd send the file directly to the second server and store its file name and/or some hash of the file name (for easier retrieval) in a database on the first server.
Using this approach, you could query the second server from the first one for the status of the operation. This way, you can leave the file processing to the second machine, and assign user interaction to the first machine.
As i said in my comment, THIS IS NOT RECOMMENDABLE but anyway....
You can use sockets reading byte by byte:
http://php.net/manual/en/book.sockets.php
or you can use ftp:
http://php.net/manual/en/book.ftp.php
Anyway, the problem in your approuch is doing the process async or sync with the user navigation? I really suggest you passed it by sql or ftp and give the user a response based on another event (like a file watching, then email, etc) or using sql (binary, blob, etc)
Use SSHFS on machine 1 to map a file path to machine 2 (using SSH) and save the uploaded file to machine 2. After the file is uploaded, trigger machine 2 to do the processing and report back as normal.
This would allow you to upload to machine 1, but actually stream it to machine 2's HD so it can be processed faster on that machine.
This will be faster than any SQL or manual file copy solution, because the file transfer happens while the user is uploading the file.
If you don't need the files immediately after receiving them (for processing etc), then you can save them all in one folder on Server 1 and set up a cron to scp the contents of the folder to Server 2. All this assuming you are using linux servers, this is one of the most secure and efficient ways to do it.
For more info please take a look at http://en.wikipedia.org/wiki/Secure_copy or google scp.
I've hosted a site on a shared hosting server.
I've a given permission 776 to a folder, is it possible for someone to upload a file using move_upload_file to my server from his home pc or own server ?
Edit
If i do not provide the front panel or some UI to the user is it still possible to upload file ?
You use move_uploaded_file (note: upload*ed*) to move/rename files in your PHP scripts on your server. The special thing about move_uploaded_file vs. rename is that it will check whether the file was just uploaded in the same HTTP request. If it wasn't, it will fail with an error.
This is to prevent errors in your script or malicious users from tricking your server into moving any other sort of files around that you didn't intend to move. Using it you can be sure that you're only moving uploaded files out of the temp directory to some other destination.
That's all it does. It does not upload files to some other server. You cannot simply upload files to some other server without that server handling that upload somehow (like through a PHP script, FTP, SCP etc).
Not sure what you're asking exactly.
If you're saying, can you make an HTML form and have someone hit that from their browser to upload. That depends what user apache runs as. You can make an HTML form, catch it with PHP and use move_uploaded_file if whatever user apache runs as can create a file in that directory.
If you're thinking someone can write a php script on another computer, and use the function move_uploaded_file, then no, you definitely can't. That's not what that function does. I'd recommend using SCP for something like that.
No, if you do not provide a script which receives the file and moves it, some other user can't upload a file to your server.
All move_uploaded_file does is move a file from the temporary directory on the hard drive to a different location on the same hard drive. It cannot put files on someone else's computer.
Your question is equivalent to asking whether your next door neighbor can copy child pornography onto your home PC's hard drive over the internet. You should be happy that the answer is no.
I was wondering is there any tutorial out there that can teach you how to push multiple files from desktop to a PHP based web server with use of Python application?
Edited
I am going to be writing this so I am wondering in general what would be the best method to push files from my desktop to web server. As read from some responses about FTP so I will look into that (no sFTP support sadly) so just old plain FTP, or my other option is to push the data and have PHP read the data thats being send to it pretty much like Action Script + Flash file unloader I made which pushes the files to the server and they are then fetched by PHP and it goes on from that point on.
I'm assuming you own the PHP server.
Use FTP. See here and here.
Make a file upload form with PHP, and use python to fill out the form. See this and this.
(Usually a bad idea) Use PHP to write small server that listens for data and then writes it to a file.
I think you're referring to a application made in php running on some website in which case thats just normal HTTP stuff.
So just look at what name the file field has on the html form generated by that php script and then do a normal post. (urllib2 or whatever you use)
I'm using CURL to upload files to a service.
currently I'm getting the file content with $GLOBALS["HTTP_RAW_POST_DATA"] then save it on my server.
after that, I'm using CURLOPT_POSTFIELDS with the file's full path.
Is there a way to send the file content directly, without saving it on my server, as if I saved it?
Or is there a way to upload a Photo from a flash app to facebook album, without saving it on the server?
Thanks
If you are uploading data you might consider using the file upload mechanism in PHP http://php.net/manual/en/features.file-upload.php It automatically handls file upload PHP.
If you want to redirect the upload to another (third party service) without needing to be in the chain of commands (i.e. user->3rd party server), you might want to look into AJAX. AFAIK when you upload a file using PHP/forms the file will be uploaded to your PHP temp directory and there is no way to prevent this because:
1. To access the file it needs to be on the server (PHP is server execute meaning it can not execute on the user side)
2. I do not believe any user will want you to access their files on their computer nor will you be able to do so(Firewall, AV), if that were to happen it will be a major security issue
As I said above, what you want to look into is AJAX (I used jquery and their AJAX methods are very simple). Because AJAX is user execute javascript it can run on the machine and initiate a connection to any URL. This way you can directly access the service without submitting the file to your server.
Here is an exmaple AJAX upload (you can google for more):
http://valums.com/ajax-upload/
Hope this helps