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PHP - Serving A File Download Of A Remote File
Dear PHPFreak members,
I have been searching a solution for serving a file download via my website. The file to be downloaded is actually on a remote server. What i need is a code that serves as a download medium without actually downloading the file to my web server. Something like masking file url Can anyone help me with it ??? Have been trying this since days. But no solution till date. Similar Tutorialsim trying to play large files from under the webroot to an html5 video tag. Nothing is working. So i made a sym link to the folder and just header_location to the file. and now when i tell html5 to play /video/play it works but, when i open firebug net tab, i can see the requests are for the full URL to the video file, not the video/play that html5 is using. Obviously because header_location will show the full path. Is there any ways you guys think what im doing is possible? If not, how can i make it that the browser can play the video files, but the user can't go there directly in their browser? Hello I already know this is possible with php <?php $file = 'monkey.gif'; if (file_exists($file)) { header('Content-Description: File Transfer'); header('Content-Type: application/octet-stream'); header('Content-Disposition: attachment; filename='.basename($file)); header('Content-Transfer-Encoding: binary'); header('Expires: 0'); header('Cache-Control: must-revalidate, post-check=0, pre-check=0'); header('Pragma: public'); header('Content-Length: ' . filesize($file)); ob_clean(); flush(); readfile($file); exit; } ?> But I am wondering is it possible to just send over a string of data stored in like $data and create a file clientside (nothing server side). So i'm guessing readfile() has to be replaced with something Hello I am in need of writting to a txt file on a remote server. When trying I get this error: "failed to open stream: HTTP wrapper does not support writeable connections in /home....." How can I write to a siply txt file on a remote server? Hello everyone. I have a script which opens a remote file, downloads it into a buffer and then sends it out to the user. At the moment, I'm using fopen() to retrieve the remote file. Everything works correctly, except when the user requests a range of the file. To do this, I tried fseek() but the problem is that fseek() does not work with remote files and gives me an error. Is there any other way I can go about doing this? Thanks. Hello everyone. I have a problem with some of my php script. I have some php code that downloads a remote file and directly outputs it to the user. It works and all, it's just that when I do it on my Ubuntu LAMP server, downloading a file takes up a lot of ram. On my Windows WAMP server it works correctly and doesn't use up so much ram. Is this a problem with my code, or is it a server configuration? Below is the code I use to download the file. Code: [Select] public function output_file($file, $name, $mime_type='', $size) { session_write_close(); /* This function takes a path to a file to output ($file), the filename that the browser will see ($name) and the MIME type of the file ($mime_type, optional). If you want to do something on download abort/finish, register_shutdown_function('function_name'); */ if(is_readable($file)) die('File not found or inaccessible!'); /* $size = $size; $name = rawurldecode($name); */ /* Figure out the MIME type (if not specified) */ $known_mime_types=array( "pdf" => "application/pdf", "txt" => "text/plain", "html" => "text/html", "htm" => "text/html", "exe" => "application/octet-stream", "zip" => "application/zip", "doc" => "application/msword", "xls" => "application/vnd.ms-excel", "ppt" => "application/vnd.ms-powerpoint", "gif" => "image/gif", "png" => "image/png", "jpeg"=> "image/jpg", "jpg" => "image/jpg", "php" => "text/plain" ); if($mime_type==''){ $file_extension = strtolower(substr(strrchr($file,"."),1)); if(array_key_exists($file_extension, $known_mime_types)){ $mime_type=$known_mime_types[$file_extension]; } else { $mime_type="application/x-rar-compressed"; }; }; @ob_end_clean(); //turn off output buffering to decrease cpu usage // required for IE, otherwise Content-Disposition may be ignored if(ini_get('zlib.output_compression')) ini_set('zlib.output_compression', 'Off'); header('Content-Type: ' . $mime_type); header('Content-Disposition: attachment; filename="'.$name.'"'); header("Content-Transfer-Encoding: binary"); header('Accept-Ranges: bytes'); /* The three lines below basically make the download non-cacheable */ header("Cache-control: no-cache"); //header('Pragma: private'); // header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); // multipart-download and download resuming support if(isset($_SERVER['HTTP_RANGE'])) { list($a, $range) = explode("=",$_SERVER['HTTP_RANGE'],2); list($range) = explode(",",$range,2); list($range, $range_end) = explode("-", $range); $range=intval($range); if(!$range_end) { $range_end=$size-1; } else { $range_end=intval($range_end); } $new_length = $range_end-$range+1; header("HTTP/1.1 206 Partial Content"); header("Content-Length: $new_length"); header("Content-Range: bytes $range-$range_end/$size"); } else { $new_length=$size; header("Content-Length: ".$size); } /* output the file itself */ $chunksize = 1*(1024)*(1024); //you may want to change this $bytes_send = 0; if ($file = fopen($file, 'r')) { if(isset($_SERVER['HTTP_RANGE'])) fseek($file, $range); while(!feof($file) && (!connection_aborted()) && ($bytes_send<$new_length) ) { $buffer = fread($file, $chunksize); print($buffer); //echo($buffer); // is also possible flush(); $bytes_send += strlen($buffer); } fclose($file); } else die('Error - can not open file.'); die(); } // END OUTPUT_FILE function I need to check a file's size with php and ssh. Everything I've seen online for remote files uses curl and port 80. I'll be checking a LAN computer that isn't running a webserver, but is running an SSH server. How can I do this? I've tried this: Code: [Select] <?php $tomorrow = date ('n-j-y'); echo system(ssh root@192.168.2.169 ls -lah "/MacRadio X/WMIS Logs/WMIS $tomorrow Log" | awk {print $5}); ?> but it didn't work. I got a T_VARIAABLE error. This was the same command I used right from the command line, and it worked. I'll also need to add a check to the file size, and if it's less than 175K, send me an email...but I'll work on that after I have the first part working. Thanks! Would this work to prevent remote file inclusion vulnerability? $file = "../include/links.php"; if ($file = '../include/links.php'){ include $file; } This one stumped me, but maybe someone has figured it out. I'm trying to write a script that is able to decide whether a remote url is a directory or a file, this is fine until it comes to mod_rewrite(rewritten?) urls. ex. http://www.example.com/test Now this could be test.php,test.html etc., but in the rare case, it could also be a folder (example.com/test/index.php). Anyone have any ideas? Hello, this script originally works by reading a physical copy of 'bans.txt' located in the same directory. How could I get it to read the remote bans.txt located here and parse info from it like the on-site copy? the remote file: http://108.163.211.219/bans.txt Code: [Select] <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Data Tables and Cascading Style Sheets Gallery</title> <style>/* Tema: Soft Table - A Simple table style with the use of the soft brown color Author: Newton de G?es Horta Site: -- Country Origin: Brazil */ table { font-size:0.9em; font-family: Arial, Helvetica, verdana sans-serif; background-color:#fff; border-collapse: collapse; width: 100%; } caption { font-size: 25px; color: #1ba6b2; font-weight: bold; text-align: left; background: url(http://www.nghorta.com/csstg/header_bg.jpg) no-repeat top left; padding: 10px; margin-bottom: 2px; } thead th { border-right: 1px solid #fff; color:#fff; text-align:center; padding:2px; text-transform:uppercase; height:25px; background-color: #a3c159; font-weight: normal; } tfoot { color:#1ba6b2; padding:2px; text-transform:uppercase; font-size:1.2em; font-weigth: bold; margin-top:6px; border-top: 6px solid #e9f7f6; } tbody tr { background-color:#fff; border-bottom: 1px solid #f0f0f0; } tbody td { color:#414141; padding:5px; text-align:left; } tbody th { text-align:left; padding:2px; } tbody td a, tbody th a { color:#6C8C37; text-decoration:none; font-weight:normal; display:block; background: transparent url(http://www.nghorta.com/csstg/links_yellow.gif) no-repeat 0% 50%; padding-left:15px; } tbody td a:hover, tbody th a:hover { color:#009193; text-decoration:none; } /* tr:nth-child(even) { background-color: grey; } */ </style></head> <body> <table summary="Submitted table designs"> <thead><tr> <th style="font-size:12px" scope="col"><center>Nickname</center></th> <th style="font-size:12px" scope="col"><center>Admin</center></th> <th style="font-size:12px" scope="col"><center>Banned</center></th> <th style="font-size:12px" scope="col"><center>Reason</center></th> <th style="font-size:12px" scope="col"><center>SteamID</center></th> <th style="font-size:12px" scope="col"><center>Length</center></th> <th style="font-size:12px" scope="col"><center>Status</center></th> </tr></thead> <tbody> <!-- <tr><th scope="row" id="r100"><a href="100.php">rows table template</a></th> <td><a href="http://www.adobati.it">Omar '0m4r' Adobati</a></td><td>Italy</td> <td>Simple, clean and a quite classic table template :)</td> <td><a href="http://www.adobati.it/labs/CSSTable/0m4r.table.css" title="Download the rows table template CSS file">Download</a></td> <td>test</td> <td>test2</td> </tr> --> <?php // Credits to justin as he was able to understand my messy PHP code and do this much better code for me. function buildBanList($arr) { $filename = "bans.txt"; $bans = array(); $tmp_array = array(); // Build Ban Array if (file_exists($filename)) { foreach( $arr as $line ) { if( substr(trim($line), 0, 7) == '"STEAM_' ) { $tmp_array["user_steamid"] = str_replace('"', '', trim($line)); } if( substr(trim($line), 0, 6) == '"time"' ) { $tmp = explode(' ', trim($line)); $tmp_array["user_bantime"] = str_replace('"', '', $tmp[1]); } if( substr(trim($line), 0, 15) == '"modified_time"' ) { $tmp = explode(' ', trim($line)); $tmp_array["user_modified"] = str_replace('"', '', $tmp[1]); } if( substr(trim($line), 0, 7) == '"unban"' ) { $tmp = explode(' ', trim($line)); $tmp_array["user_unban"] = str_replace('"', '', $tmp[1]); } if( substr(trim($line), 0, 7) == '"admin"' ) { $tmp = explode('" "', trim($line)); $tmp2 = explode('(', $tmp[1]); $tmp_array["admin_name"] = str_replace('"', '', $tmp2[0]); } if( substr(trim($line), 0, 6) == '"name"' ) { $tmp = explode('" "', trim($line)); $tmp_array["user_name"] = str_replace('"', '', $tmp[1]); } if( substr(trim($line), 0, 8) == '"reason"' ) { $tmp = explode('" "', trim($line)); $tmp_array["user_reason"] = str_replace('"', '', $tmp[1]); } // Save ban record to main array once detected end. if( substr(trim($line), 0, 1) == '}' ) { // If console ban then set required fields. if( $tmp_array["admin_name"] == "") $tmp_array["admin_name"] = "Console"; array_push($bans, $tmp_array); $tmp_array = array(); } } } //Sort Array by Ban Date $tmp = array(); foreach($bans as &$ma) $tmp[] = &$ma["user_bantime"]; array_multisort($tmp, SORT_DESC, $bans); return $bans; } //Begin Presentation $file = file("./bans.txt"); date_default_timezone_set("Europe/London"); $bans = buildBanList($file); foreach ($bans as $ban) { echo '<tr> '; // Output if ($ban["user_name"] != '') echo '<td style="text-align:center; font-size: 12px">'.$ban["user_name"].'</td><td style="text-align:center; font-size: 12px" class="admin">'; else echo '<td style="text-align:center; font-size: 12px"><span style="color:#FF0000">N/A</span></td><td style="text-align:center; font-size: 12px" class="admin">'; echo $ban["admin_name"].'</td><td style="text-align:center; font-size: 12px">'.date('H:i - d/m/y',$ban["user_bantime"]).'</td>'; /* Unban date. if ($ban["user_unban"] != "0") { echo date('H:i - d/m/y',$ban["user_unban"]); } else { echo "Never"; }*/ echo '<td style="text-align:left; font-size: 11px">'.$ban["user_reason"].'</td>'; // Status $today = strtotime("now"); echo '</td><td style="text-align:center; font-size: 12px">'.$ban["user_steamid"].' </td>'; // Ban Length $date1 = date('y-m-d H:i:s',$ban["user_bantime"]); $date2 = date('y-m-d H:i:s',$ban["user_unban"]); $to_time=strtotime($date1); $from_time=strtotime($date2); $ban_length = round(abs($to_time - $from_time) / 60,0); if ($ban["user_unban"] != "0") { // Days if ($ban_length >= 1440) { $ban_length = round(abs($to_time - $from_time) / 24 / 60 / 60,0); // Years couldn't be arsed to think of another way to do it. if ( $ban_length >= 365 ) { $ban_length = round(abs($to_time - $from_time) / 360 / 24 / 60 / 60,0); if ($bans_length > 1) echo "<td style=\"text-align:center; font-size: 12px\">".$ban_length." Years </td>"; else echo "<td style=\"text-align:center; font-size: 12px\">".$ban_length." Year </td>"; } else echo "<td style=\"text-align:center; font-size: 12px\">".$ban_length." Days </td>"; } // Hours else if ($bans_length >= 60) { $ban_length = round(abs($to_time - $from_time) / 60 / 60,0); if ($bans_length > 1) echo "<td style=\"text-align:center; font-size: 12px\">".$ban_length." Hours </td>"; else echo "<td style=\"text-align:center; font-size: 12px\">".$ban_length." Hour </td>"; } else echo "<td style=\"text-align:center; font-size: 12px\">".$ban_length." Minutes </td>"; } else { echo "<td style=\"text-align:center; font-size: 12px\">Permanent</td>"; } if ($ban["user_unban"] == "0") echo '<td style="text-align:center; font-size: 12px"><span style="color:#FF0000">Banned</span></td>'; else if ( $today > $ban["user_unban"] ) echo '<td style="text-align:center; font-size: 12px"><span style="color:#008000">Expired</span></td>'; else echo '<td style="text-align:center; font-size: 12px"><span style="color:#FF0000">Banned</span></td>'; echo '</tr>'; } ?></table> <center><p>Web-based ULX bans by Russy.</p></center> </div> </body> </html> I've tried experimenting w/ stuff like Code: [Select] $filename = "http://108.163.211.219/bans.txt"; $contents = file_get_contents($filename); but it doesn't seem to want to work. Hi, I have a video site with a lot of content hosted. I recently shifted to a CDN solution. The problem now is that I cannot force user to download the file. The files just open in the browser window. When the user clicks on download, I just use header ("location: http://cndserver/file.mov"); What can I do to force download a file stored on a remote server? Any help is appreciated. Thanks in advance. What's the proper way to check if a file exists on a remote server? I know file_exists() works for you local files. I think i need to use something like the following. BUT if the file is not found PHP throws a warning. I know i can put a '@' before fopen() but that just masks the error. Code: [Select] <?php if(fopen("http://www.othersite.com/imageXYZ.jpg", "r")) { echo "File exists."; } else { echo "File does not exist."; } ?> Following on from a discussion in the IRC #help chat I wanted to open a discussion on the best method to upload an file to a remote server through a web service. It is a little more complex than that simple explanation so let me go into more detail. You have the client accessing a website which is hosted on ServerA, through their computer which is the files origin. The web service is housed on ServerB and the remote upload target server is ServerC. I'm looking to upload the file through the web service on ServerB. The purpose of this is to prevent ServerA from knowing the target location for the upload, ServerC. ServerA must be able to take the file from the computer, pass it to the web service on ServerB which streams it through to ServerC. The file shoul not be saved on any one of the hops through to ServerC, it should be streamed straight through. Computer (file) ---> ServerA (Apache) ---> ServerB (Web Service) ---> ServerC (File target location) If youn think this is possible, what is your best suggested method of uploading the file. Currently, I'm looking at using cURL and the SoapClient to access the web service and upload the file. I'm yet to research if this is possible and would like to know if anyone else has a better method/suggestion? Regarding my job, I just need to connect ServerA with ServerB and stream the file somehow for the clients computer... hey friends i badly need one help i want to read some remote file say http://xyz.com/my.file when i download using wget in shell its reading with more than 4mbps but when i use fread/file_get_contents/curl function in php script its read with too slow speed please help me please I need to check (from a Debian server to a Mac CLIENT (not server) machine) to see if a file exists on the file system...not an http server. Here's what I've tried (based on reading at http://www.php.net/manual/en/function.ssh2-exec.php) Code: [Select] <?php function check_remote_files($username, $hostname, $remote_file) { $connection = ssh2_connect($hostname, 22, array('hostkey'=>'ssh-rsa')); if (ssh2_auth_pubkey_file($connection, $username, '/root/.ssh/id_rsa.pub', '/root/.ssh/id_rsa', '')) { echo "Public Key Authentication On Server #2 Successful\n"; } $url = "if ssh $hostname stat $remote_file \> /dev/null 2\>\&1"; $stream=ssh2_exec($connection,$url); stream_set_blocking( $stream, true ); $cmd=fread($stream,4096); fclose($stream); $stream=ssh2_exec($connection,"then"); stream_set_blocking( $stream, true ); $cmd=fread($stream,4096); fclose($stream); $stream=ssh2_exec($connection,"echo File exists"); stream_set_blocking( $stream, true ); $cmd=fread($stream,4096); fclose($stream); $stream=ssh2_exec($connection,"else"); stream_set_blocking( $stream, true ); $cmd=fread($stream,4096); fclose($stream); $stream=ssh2_exec($connection,"echo Not found"); stream_set_blocking( $stream, true ); $cmd=fread($stream,4096); fclose($stream); $stream=ssh2_exec($connection,"fi"); stream_set_blocking( $stream, true ); $cmd=fread($stream,4096); fclose($stream); } ?> NOTHING happens after the echo of Public Key Authentication On Server #2 Successful. I'm running this script from a bash shell. Any ideas what might be wrong? Thanks. Purpose: To get time zone of a remote file in my time zone. I have to download a file daily (mp3, don't worry its legal!) from BBC. Problem is that sometimes BBC doesn't update the file and i have to download entire file to check if it has been updated or not. Hence i decided to code a page that gives me date and time of that remote file. I have successfully compiled the code (that i got from internet). But the time returns in EST. I want the time in IST (indian std time Asia/Calcutta). CURLINFO_FILETIME has bee used. Below is code. Pls suggest me how to convert EST to IST - Warning: I am a newbie. But i can follow instructions Code: [Select] <?php $curl = curl_init('http://wsdownload.bbc.co.uk/hindi/tx/32mp3/din_bhar.mp3'); //don't fetch the actual page, you only want headers curl_setopt($curl, CURLOPT_NOBODY, true); //stop it from outputting stuff to stdout curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); // attempt to retrieve the modification date curl_setopt($curl, CURLOPT_FILETIME, true); $result = curl_exec($curl); if ($result === false) { die (curl_error($curl)); } $timestamp = curl_getinfo($curl, CURLINFO_FILETIME); if ($timestamp != -1) { //otherwise unknown echo "BBC Hindi was last modified" . date("d-m-Y h:i:s A T", $timestamp); //etc } ?> I have used it with custom getRemoteFileSize function he - Code: [Select] http://island.web44.net/bbc.php Hey guys I m developing a download system for my server that reads files from a third party server and enables MY USER to download it via my URL. What mechanisms should i use to manage this efficiently ??? file_get_contents(); fopen(); Or should I use some kind of buffer mechanism ??? Please do provide a code sample as I'm stuck here very badly. Note: The file sizes may be >500MB Hello! I'm making a interface in a website do manage files in a ftp hosted on other server. I'm using the function ftp_get() to download a file but I've tried different aways but I dosent seem do be able to download the file directly from the FTP server do the user the only way it works is if I download the file to the website server first then to the client. Is there any way that I can download the file directly to the user without have to hosting it permanently on the website server? Thank you Hi all, I'm trying to make a PHP script that downloads a file off a remote FTP server and serves the file to the visitor with a limited download speed. Right now I'm using fopen() like this: Code: [Select] $path = "ftp://".$username.":".$password."@".$server."/"; $fullPath = ($path.$fileName); $speed = 400; // 400 kb/s download rate header("Cache-control: private"); header("Content-Type: application/octet-stream"); //header("Content-Length: ".filesize($fullPath)); header("Content-Disposition: filename=\"".$fileName."\""); flush(); $fd = fopen($fullPath, "r"); while(!feof($fd)) { echo fread($fd, round($speed*1024)); flush(); sleep(1); } fclose ($fd); The file does download but with the wrong speed (8kb/s), does anyone know why? When I run the same code with a local file instead of a file on FTP it works fine and downloads at the speed I set it to.. Thanks I've written the following code: Code: [Select] <?php echo '<img src="Sheph.png" />'; function Wad(){ if (file_exists("Sheph.png")) { header('Content-Description: File Transfer'); header('Content-Type: application/octet-stream'); header('Content-Disposition: attachment; filename='.basename("Sheph.png")); header('Content-Transfer-Encoding: binary'); header('Expires: 0'); header('Cache-Control: must-revalidate'); header('Pragma: public'); header('Content-Length: ' . filesize("Sheph.png")); ob_clean(); flush(); readfile("Sheph.png"); exit; } } Wad(); ?> What I want to do is show the image AND show a file download window. The problem is that it shows the download window but the image doesn't appear. and if I comment the function and keep the echo part only,the image appears normally. What's wrong ? The other day I noticed someone had post something like this, well this was actually the solution to the problem. But it got me thinking about a project of mine that I am working on and the need to pump out a downloadable file. We are storing most of the files in a database using base64 encoding the 2 key types of files we are storing are images and PDF's mostly pdf's anyway where I am wanting to go with this is, is there anyway to take the base64 encoded file and get it to download through this, or am I tackling the idea in the wrong way? <?php $filename = 'somename.txt'; //this would obviously be changed according to the file type we would output $data =<<<DATA I know my data would go here for the given file once decoded. DATA; header('Content-Description: File Transfer'); header('Content-Type: application/octet-stream'); header('Content-Disposition: attachment; filename=' . $filename); header('Content-Transfer-Encoding: binary'); header('Expires: 0'); header('Cache-Control: must-revalidate, post-check=0, pre-check=0'); header('Pragma: public'); header('Content-Length: ' . strlen($data)); echo $data; ?> |
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