Nginx HttpSecureLinkModule php streaming

I have for hours been trying to understand and figure out how this is
working, and searched and tried a lot, but still… No hair left on my
head
:frowning:

Sources for trial and errors
http://nginx.org/en/docs/http/ngx_http_secure_link_module.html#variables
http://stackoverflow.com/questions/8848919/secure-pseudo-streaming-flv-files/8863219#8863219
http://stackoverflow.com/questions/27468743/nginx-secure-link-module-not-working-with-php-files-but-working-on-static-files
http://stackoverflow.com/questions/30065870/nginx-httpsecurelinkmodule-php-example

The question is how do I get Nginx and php to make a timed encrypted
link to
play a video?

The final output should be looking like

http://domain.tld/videos/529d86c4ff560cb559df7eb794aeb4b1/56f5bec4/5/4/d/f/e/54dfee5c43e6e.mp4

real path for this video is

/var/www/domain.tld/media/videos/5/4/d/f/e/54dfee5c43e6e.mp4

The php snippet that should be left unaltered if possible, since it will
be
updated from time to time from the developer. So all modifications have
to
made in NginX

//generate lighttpd hash
function getMediaLink($filename) {
  global $modsec_secret; // example: s3cr3tk3y (from your lighttpd

config)
global $modsec_url; // example: http://media.asfd.com/dl/ with
trailing slash
$filename = rawurldecode($filename);
$f = “/”.$filename;
$t = time();
$t_hex = sprintf("%08x", $t);
$m = md5($modsec_secret.$f.$t_hex);
$link = $modsec_url.$m.’/’.$t_hex.$f;
return $link;
}

And to the NginX conf file i have this head:

    server {
        listen       80; # http2;
        server_name  localhost;
          index  index.php index.html index.htm;

        #charset koi8-r;
        access_log  /var/log/nginx/access.log  main;
        root   /var/www/domain.tld;

        location / {

..... (the latest attempt)

location /videos/ {
  secure_link $arg_st,$arg_e;
  secure_link_md5 secretstring$uri$arg_e;

 location ~ \.mp4$ {

    if ($secure_link = "") {
      return 403;
      }

    mp4;
    mp4_buffer_size       1m;
    mp4_max_buffer_size   5m;
    gzip off;

  }

location ~ \.flv$ {

  if ($secure_link = "") {
    return 403;
    }

  flv;
  }
}

Could some one please try to tell me how to make this happen, but maybe
more
important why, in a passion that mae me understand how and why?

Posted at Nginx Forum:
https://forum.nginx.org/read.php?2,265663,265663#msg-265663

Have strogled with this for 4 days now… could someone please help me?

Posted at Nginx Forum:
https://forum.nginx.org/read.php?2,265663,265681#msg-265681

On Fri, Mar 25, 2016 at 10:01:28PM -0400, JoakimR wrote:

Hi there,

The question is how do I get Nginx and php to make a timed encrypted link to
play a video?

I’m not sure what specifically your question is.

If it is “how do I use the nginx secure-link module?”, then the content
at http://nginx.org/en/docs/http/ngx_http_secure_link_module.html should
be helpful.

If it is “how do I use the nginx secure-link module with mp4 streams?”,
then the first hit on a web search for “site:nginx.org secure link mp4”
for me is https://forum.nginx.org/read.php?2,228161,228183 which seems
to show a working example.

If it is “how do I create the url in php?”, then the shell examples on
the first page should give a hint; just implement that in php.

The php snippet that should be left unaltered if possible, since it will be
updated from time to time from the developer. So all modifications have to
made in NginX

That makes it sound like the question is “how do I use the nginx
secure-link module, when the algorithm to create the link can be
anything
at all?”.

And the answer there is “you don’t”.

If you want your own secure-link creation system, you write your own
module to match that. If you want to use the nginx secure-link module,
you write you external link-creation tool to match it.

location /videos/ {
  secure_link $arg_st,$arg_e;
  secure_link_md5 secretstring$uri$arg_e;

What request do you make for this test? What values do these variables
have, when nginx receives that request?

Could some one please try to tell me how to make this happen, but maybe more
important why, in a passion that mae me understand how and why?

Start small. What is the first specific thing you want to do?

Do you have it working? If not, what do you have, what do you do, what
response do you get, what response do you want?

Repeat, for each other specific thing that you want to do.

Good luck with it,

f

Francis D. [email protected]

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