[DOCUMENTATION] New socialfy solution
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Diogo Cordeiro
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#Simple way to Webfinger enable your domain -- needs PHP
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##Step 1
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Put the 'dot-well-known' on your website, so it loads at:
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https://another_cool.org/.well-known/
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(Remember the . at the beginning of this one, which is common practice
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for "hidden" files and why we have renamed it "dot-")
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## Step 2
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Edit the .well-known/webfinger/index.php file and replace "https://www.example.org/gnusocial/index.php" with the domain name
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you're hosting the .well-known handler on.
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Initial simple way to Webfinger enable your domain -- needs PHP.
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================================================================
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This guide needs some updating, since it will only guide you to present
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XML data (while the curl command likely gives you JSON). The workaround
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is to simply make curl get 'webfinger.xml' instead, and/or have another
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file that contains JSON, but that requires editing the PHP file as well.
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Step 1
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======
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Put the 'dot-well-known' on your website, so it loads at:
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https://example.com/.well-known/
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(Remember the . at the beginning of this one, which is common practice
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for "hidden" files and why we have renamed it "dot-")
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Step 2
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======
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Edit the .well-known/host-meta file and replace "example.com" with the
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domain name you're hosting the .well-known directory on.
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Using vim you can do this as a quick method:
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$ vim .well-known/host-meta [ENTER]
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:%s/example.com/domain.com/ [ENTER]
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:wq [ENTER]
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Step 3
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======
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For each user on your site, and this might only be you...
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In the webfinger directory, make a copy of the example@example.com.xml file
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so that it's called (replace username and example.com with appropriate
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values, the domain name should be the same as you're "socialifying"):
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username@example.com.xml
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Then edit the file contents, replacing "social.example.com" with your
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GNU social instance's base path, and change the user ID number (and
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nickname for the FOAF link) to that of your account on your social
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site. If you don't know your user ID number, you can see this on your
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GNU social profile page by looking at the destination URLs in the
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Feeds links.
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PROTIP: You can get the bulk of the contents (note the <Subject> element though)
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from curling down your real webfinger data:
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$ curl https://social.example.com/.well-known/webfinger?resource=acct:username@social.example.com
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Finally
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=======
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Using this method, though fiddly, you can now be @user@domain without
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the need for any prefixes for subdomains, etc.
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<?xml version="1.0" encoding="UTF-8"?>
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<XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0" xmlns:hm="http://host-meta.net/xrd/1.0">
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<Link rel="lrdd" type="application/xrd+xml"
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template="https://example.com/.well-known/webfinger?resource={uri}"/>
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</XRD>
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<?xml version="1.0" encoding="UTF-8"?>
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<XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0">
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<Subject>acct:username@example.com</Subject>
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<Alias>acct:username@social.example.com</Alias>
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<Alias>https://social.example.com/user/1</Alias>
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<Link rel="http://webfinger.net/rel/profile-page"
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type="text/html"
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href="https://social.example.com/user/1"/>
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<Link rel="http://schemas.google.com/g/2010#updates-from"
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type="application/atom+xml"
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href="https://social.example.com/api/statuses/user_timeline/1.atom"/>
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<!-- Is this/was this ever supported?
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<Link rel="http://microformats.org/profile/hcard"
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type="text/html"
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href="https://social.example.com/hcard"/> -->
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<Link rel="http://gmpg.org/xfn/11"
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type="text/html"
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href="https://social.example.com/user/1"/>
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<Link rel="describedby"
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type="application/rdf+xml"
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href="https://social.example.com/username/foaf"/>
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<Link rel="http://salmon-protocol.org/ns/salmon-replies"
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href="https://social.example.com/main/salmon/user/1"/>
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<Link rel="http://salmon-protocol.org/ns/salmon-mention"
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href="https://social.example.com/main/salmon/user/1"/>
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<Link rel="http://ostatus.org/schema/1.0/subscribe"
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template="https://social.example.com/main/ostatussub?profile={uri}"/>
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</XRD>
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<?php
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/*
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* GNU social
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* Copyright (C) 2010, Free Software Foundation, Inc
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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// FIXME: REPLACE \/ here
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define('MY_GNUSOCIAL', 'https://www.example.org/gnusocial/index.php');
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/**
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* This is a general solution for when you can't have your GNU social instance in the domain root and for when you want to
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* socialfy from another domain.
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*/
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// basename should make sure we can't escape this directory
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$u = basename($_GET['resource']);
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if (!strpos($u, '@')) {
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throw new Exception('Bad resource');
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exit(1);
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// From https://www.php.net/manual/en/function.getallheaders.php#84262 (joyview at gmail dot com)
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if (!function_exists('getallheaders')) {
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function getallheaders()
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{
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$headers = [];
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foreach ($_SERVER as $name => $value) {
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if (substr($name, 0, 5) == 'HTTP_') {
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$headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value;
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}
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}
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return $headers;
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}
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}
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$ch = curl_init();
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curl_setopt($ch, CURLOPT_HTTPHEADER, getallheaders());
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curl_setopt($ch, CURLOPT_URL, MY_GNUSOCIAL . str_replace('webfinger/', 'webfinger', $_SERVER['REQUEST_URI']));
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_HEADER, true);
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$response = curl_exec($ch);
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$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
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$body = substr($response, $header_size);
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// From https://stackoverflow.com/a/10590242 (c.hill)
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function get_headers_from_curl_response($response)
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{
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$headers = array();
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if (mb_strpos($u, 'acct:')===0) {
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$u = substr($u, 5);
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$header_text = substr($response, 0, strpos($response, "\r\n\r\n"));
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foreach (explode("\r\n", $header_text) as $i => $line) {
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if ($i === 0) {
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$headers['http_code'] = $line;
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} else {
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list($key, $value) = explode(': ', $line);
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$headers[$key] = $value;
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}
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}
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return $headers;
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}
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// Just to be a little bit safer, you know, with all the unicode stuff going on
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$u = filter_var($u, FILTER_SANITIZE_EMAIL);
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$f = $u . ".xml";
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if (file_exists($f)) {
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header('Content-Disposition: attachment; filename="'.urlencode($f).'"');
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header('Content-type: application/xrd+xml');
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echo file_get_contents($f);
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$headers = get_headers_from_curl_response($response);
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foreach ($headers as $name => $value) {
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header("{$name}: $value");
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}
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echo $body;
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curl_close($ch);
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