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upload.pm

This Nginx module implements the HTTP server's part of the XMPP extension XEP-0363: HTTP File Upload. It can be used with either ejabberd's mod_http_upload or Prosody's mod_http_upload_external.

Nginx setup

  1. Create a directory and move upload.pm into it, e.g.:

    # mkdir -p /usr/local/lib/perl
# wget -O /usr/local/lib/perl/upload.pm https://git.io/fNZgL

  2. Install the ngx_http_perl_module. On Debian/Ubuntu-based distributions, the package is called libnginx-mod-http-perl, on RedHat/CentOS-based distributions, it's nginx-mod-http-perl. If you're using Docker, make sure you use the image ending in -perl.

  3. Add the following snippets to the appropriate sections of your Nginx configuration:

    # This directive was probably added by the distribution package already:
load_module modules/ngx_http_perl_module.so;

http {
    # Add the following two lines to the existing "http" block.
    perl_modules /usr/local/lib/perl; # Path to upload.pm.
    perl_require upload.pm;
}

server {
    # Specify directives such as "listen", "server_name", and TLS-related
    # settings for the "server" that handles the uploads.

    # Uploaded files will be stored below the "root" directory. To minimize
    # disk I/O, make sure the specified path is on the same file system as
    # the directory used by Nginx to store temporary files holding request
    # bodies ("client_body_temp_path", often some directory below /var).
    root /var/www/upload;

    # Specify this "location" block (if you don't use "/", see below):
    location / {
        perl upload::handle;
    }

    # Upload file size limit (default: 1m), also specified in your XMPP
    # server's upload module configuration (see below):
    client_max_body_size 100m;
}

  4. Open upload.pm in an editor and adjust the configuration at the top of the file:

    • The $external_secret must match the one specified in your XMPP server's upload module configuration (see below).

    • If the root path of the upload URIs (the location specified in the Nginx server block) isn't / but /some/prefix/, $uri_prefix_components must be set to the number of directory levels. So, for /some/prefix/, it would be 2.

ejabberd setup

Let the mod_http_upload option put_url point to Nginx, and specify exactly the same external_secret as in the upload.pm settings:

modules:
  mod_http_upload:
    put_url: "https://upload.example.com"
    external_secret: "it-is-secret"
    max_size: 104857600 # 100 MiB, also specified in the Nginx configuration.

Prosody setup

Let the mod_http_upload_external option http_upload_external_base_url point to Nginx, and specify exactly the same http_upload_external_secret as in the upload.pm settings:

http_upload_external_base_url = "https://upload.example.com"
http_upload_external_secret = "it-is-secret"
http_upload_external_file_size_limit = 104857600 -- 100 MiB

Contact

If you have any questions, you could ask in the ejabberd room: [email protected] (the maintainer of this module is usually joined as Holger).