PHP Downloading a file from a different password protected server - php

I am building an application that will allow users to download some pdf files, but these files are stored on a different server which is password protected, the password is known.
What is the best way to pass these files on to the user.
MyAppIP/applicationfiles.php
FilesIP/PDF-Files/file1.pdf <-- this is password protected, but I know the pass.
I was thinking on saving the files on my own server first since they have a maximum size of 100kb. Then passing them to the user and deleting the local file again, but I haven't completely figured out how to obtain the file from the other server in the first place.
So how do I obtain files from the different server in php?

You can use CURL for download file from protected server. CURL also support many authorization methods. http://www.php.net/manual/en/function.curl-setopt.php
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'FilesIP/PDF-Files/file1.pdf');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERPWD, "Login:Password");
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
$file = curl_exec($ch);
curl_close($ch);
file_put_contents('/var/www/file.pdf', $file);
// return download link to user
// Download

If the auth is basic http and you have installed curl, you can use this:
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERPWD, "$username:$password");
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
$output = curl_exec($ch);
curl_close($ch);

Related

Rapidgator API Direct Download Link Error

Guys, I am currently working on file hosting premium link generator basically it will be a website from where you can get a premium link of uptobox,rapidgator,uploaded.net and other file hosts sites without purchasing the premium account. Basically, We are purchasing the accounts of this website on behalf of the users and offering this service at a low price. So when I was setting up API of direct download link of rapidgator I was able to get that link but I was getting session is over. I was trying to that API via a software, not via manual coding and I am facing this problem
So I have been getting Rapidgator API reference from Tihs Site:- https://gist.github.com/Chak10/f097b77c32a9ce83d05ef3574a30367d
So I am doing the following Thing With My Debugging Software And I am getting success response but when I just open that URL in my browser it shows Session Id Failed.
So Here Are Steps What I am Doing
Sending a post request on https://rapidgator.net/api/user/login with username and data and I am getting this output
{"response":{"session_id":"g8a13f32hr4cbbbo54qdigrcb3","expire_date":1542688501,"traffic_left":"13178268723435"},"response_status":200,"response_details":null}
Now I am sending a get request (I tried Post Request Too But the Same Thing Happened) on this url with session id and URL embedded in URL https://rapidgator.net/api/file/download?sid=&url=
and I am getting this output
{"response":{"url":"http:\/\/pr56.rapidgator.net\/\/?r=download\/index&session_id=uB9st0rVfhX2bNgPrFUri01a9i5xmxan"},"response_status":200,"response_details":null}
When I try to download the file from the Url through my browser It says Invalid Session and sometimes too many open connections error
Link of the error:- https://i.imgur.com/wcZ2Rh7.png
Success Response:- https://i.imgur.com/MqTsB8Q.png
Rapidgator needs its api to be hit three times with different URLs.
$cookie = $working_dir.rand();
$headers = array("header"=>"Referer: https://rapidgator.net");
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://rapidgator.net/api/user/login");
curl_setopt($ch, CURLOPT_ENCODING, 'gzip, deflate');
curl_setopt($ch, CURLOPT_POSTFIELDS, "username=email#domain.ext&password=myplaintextpassword");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_VERBOSE, 0);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
$result = curl_exec($ch);
curl_close ($ch);
$rapidgator_json = json_decode($result,true);
return array($rapidgator_json['response']['session_id'],$cookie);
http://rapidgator.net/api/user/login (this is the initial login)
Above link gives you a session id that you need. The response is in JSON
Now we need to request a download link that will allow us to download without having to log in to a human input form. So we will use its api to request a download link using the intial session id we got from the 1st url.
$headers = array("header"=>"Referer: http://rapidgator.net/api/user/login");
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://rapidgator.net/api/file/download?sid=$rapidgator_session&url=$rapidgator_file");
curl_setopt($ch, CURLOPT_ENCODING, 'gzip, deflate');
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_VERBOSE, 0);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_COOKIEJAR, $working_dir.$rapidgator_cookie);
curl_setopt($ch, CURLOPT_COOKIEFILE, $working_dir.$rapidgator_cookie);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
$result = curl_exec($ch);
curl_close ($ch);
$rapidgator_json = json_decode($result,true);
return array($rapidgator_json['response']['url']);
Basically, we pass the session id Rapidgator gave us assuming you have properly passed a valid account. Then we include the source url you had obtained (Link to file) http://rapidgator.net/api/file/download?sid=$rapidgator_session&url=$rapidgator_file
After that. Rapidgator will return a JSON response with an url that u can use to obtain the file in question. This allows you to use whatever download method you want
as that link is a session url is valid for a short period of time.
$rapidgator_json['response']['url']
All code above is somewhat incomplete. Some extra checks on the json responces for possible errors/limits are recommended. I used functions on my end but this is enough for you to see what you should be doing. Rapidshare API has other data that can be useful in determining if you have gone over your daily quota. How long the session url is going to last and so on.

PHP NTLM Authentication to Active Directory + keeping session

I've got NTLM (Active Directory) based service, and I need to write a PHP application. Normally, users are logging in to website with Activre Directory credentials, and it's ok.
But what I want to do, is to let them type in their credentials to PHP-written site, which in next step will use cURL to authenticate users to that Active Directory based site where they normally log in.
And this part is hard. I need then to keep session of users that through PHP cURL script authenticated to Active Directory based site in order to use them again later
(CRON querying site to determine that it has changed and automatically do some operations when this happens, which normally user has do manually).
In order to NOT store their credentials to authenticate again when this change happens, I somehow need to store NTLM session in PHP cURL site to every user that authenticated to
that site through this PHP cURL site.
My question is: Is that even possible?
Thanks in advance.
#Willem Mulder
The code you've posted actually does cookie-storing, but that is not my point becouse I've already done that (sorry for not writing it before). What I got so far is:
$cookie_file_path = dirname(__FILE__) . '/cookies.txt';
$ch = curl_init();
//==========================================================================
curl_setopt($ch, CURLOPT_USERPWD, $username. ':' . $password);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_USERAGENT, $user_agent);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file_path);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file_path);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLINFO_HEADER_OUT, true);
curl_setopt($ch, CURLOPT_FAILONERROR, 0);
curl_setopt($ch, CURLOPT_MAXREDIRS, 100);
//==========================================================================
$ret = curl_exec($ch);
By using options CURLOPT_COOKIEFILE and CURLOPT_COOKIEJAR, cURL does the cookie storing in local file "cookies.txt". The problem is, that when I comment CURLOPT_USERPWD option (after authenticating and storing cookie, so theoretically I have session), I cannot authorize to website. Perhaps it reinitializes NTLM Handshake authorisation and is expecting username and password, which I don't want to store.
I want to store session info only, to provide service this session info and omit second authentication, but cURL seems to not take this data from cookie file, and REWRITES it with not relevant data send to me from service as response to NOT AUTHRORISED access request.
Well, yes you could
$ch = curl_init('http://www.google.com/');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
// Get headers too with this line
curl_setopt($ch, CURLOPT_HEADER, 1);
$result = curl_exec($ch);
// Get cookie
preg_match('/^Set-Cookie:\s*([^;]*)/mi', $result, $m);
var_dump(parse_url($m[1]));
// And then of course store it somewhere :-)
As seen here how to get the cookies from a php curl into a variable

PHP cURL/Socket and HTTP authentication

I have a webpage with a list of HTML links for images in a protected subfolder.
This folder is protected via .htaccess and HTTP authentication.
Is there a way to use cURL/Socket, or something like that, to access to the subfolder?
If you are talking about HTTP Basic authentication, then you can provide the necessary credentials with
curl_setopt($curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC); // enable HTTP Basic auth
curl_setopt($curl, CURLOPT_USERPWD, "username:password"); // credentials
There are also some other options that may be of interest such as CURLOPT_PROXYUSERPWD (if you are going through a proxy) and CURLOPT_UNRESTRICTED_AUTH (if the initial host redirects you to another domain where the actual authentication takes place).
<?php
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'http://www.example.com');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt(CURLOPT_USERPWD, '[username]:[password]')
$data = curl_exec();
curl_close($ch);
?>
Source

PHP - How to login via curl and download files?

Im using php, using curl Im accessing a directory on a server via http using httpauth. I pass it a username and password and it seems to work, but once I login how do I get the current directory and then proceed to download the files in that directory? Im using this curl code to authenticate:
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERPWD, "$username:$password");
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
$output = curl_exec($ch);
$info = curl_getinfo($ch);
curl_close($ch);
Just resend the credentials for any future requests. HTTP authentication doesn't keep track of logins; the client simply needs to resend the username / password pair for each request.

Using PHP CURL to download a file

I am trying to download a .exe file using PHP CURL from the web server to the PC, using CURL to make the webserver login automatic. The problem I'm having is that the file is being written to the browser window instead of asking the user to save or run the file. I'm using the code below, how can I fix this to make it work like I want?
$username = "myuser";
$password = "mypassword";
$url="http://www.mywebsite.com/files/softwaredownload/myfile.exe";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_USERPWD, "$username:$password");
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_exec ($ch);
curl_close($ch);
You should set the headers so the browser knows it has to display the save dialog.
Content-Disposition: attachment; filename=<file name.ext>
Also, bear in mind that Content-Type header should be before Content-Disposition.
Add to your code these lines:
curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
... and replace curl_exec($ch) with $response = curl_exec($ch);, so $response content might be saved into a local file with file_put_contents() of fwrite() methods.

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