src/Core/Protocol.php

   1 <?php
   2 /*
   3  * @file src/Core/Protocol.php
   4  */
   5 namespace Friendica\Core;
   6
   7 use Friendica\Util\Network;
   8
   9 /**
  10  * Manage compatibility with federated networks
  11  *
  12  * @author Hypolite Petovan <hypolite@mrpetovan.com>
  13  */
  14 class Protocol
  15 {
  16         // Native support
  17         const ACTIVITYPUB = 'apub';    // ActivityPub (Pleroma, Mastodon, Osada, ...)
  18         const DFRN        = 'dfrn';    // Friendica, Mistpark, other DFRN implementations
  19         const DIASPORA    = 'dspr';    // Diaspora, Hubzilla, Socialhome, Ganggo
  20         const FEED        = 'feed';    // RSS/Atom feeds with no known "post/notify" protocol
  21         const MAIL        = 'mail';    // IMAP/POP
  22         const OSTATUS     = 'stat';    // GNU Social and other OStatus implementations
  23
  24         const NATIVE_SUPPORT = [self::DFRN, self::DIASPORA, self::OSTATUS, self::FEED, self::MAIL, self::ACTIVITYPUB];
  25
  26         // Supported through a connector
  27         const DIASPORA2 = 'dspc';    // Diaspora connector
  28         const LINKEDIN  = 'lnkd';    // LinkedIn
  29         const PUMPIO    = 'pump';    // pump.io
  30         const STATUSNET = 'stac';    // Statusnet connector
  31         const TWITTER   = 'twit';    // Twitter
  32
  33         // Dead protocols
  34         const APPNET    = 'apdn';    // app.net - Dead protocol
  35         const FACEBOOK  = 'face';    // Facebook API - Not working anymore, API is closed
  36         const GPLUS     = 'goog';    // Google+ - Dead in 2019
  37
  38         // Currently unsupported
  39         const ICALENDAR = 'ical';    // iCalendar
  40         const MYSPACE   = 'mysp';    // MySpace
  41         const NEWS      = 'nntp';    // Network News Transfer Protocol
  42         const PNUT      = 'pnut';    // pnut.io
  43         const XMPP      = 'xmpp';    // XMPP
  44         const ZOT       = 'zot!';    // Zot!
  45
  46         const PHANTOM   = 'unkn';    // Place holder
  47
  48         /**
  49          * Returns the address string for the provided profile URL
  50          *
  51          * @param string $profile_url
  52          * @return string
  53          * @throws Exception
  54          */
  55         public static function getAddrFromProfileUrl($profile_url)
  56         {
  57                 $network = self::matchByProfileUrl($profile_url, $matches);
  58
  59                 if ($network === self::PHANTOM) {
  60                         return "";
  61                 }
  62
  63                 $addr = $matches[2] . '@' . $matches[1];
  64
  65                 return $addr;
  66         }
  67
  68         /**
  69          * Guesses the network from a profile URL
  70          *
  71          * @param string $profile_url
  72          * @param array  $matches     preg_match return array: [0] => Full match [1] => hostname [2] => username
  73          * @return type
  74          */
  75         public static function matchByProfileUrl($profile_url, &$matches = [])
  76         {
  77                 if (preg_match('=https?://(twitter\.com)/(.*)=ism', $profile_url, $matches)) {
  78                         return self::TWITTER;
  79                 }
  80
  81                 if (preg_match('=https?://(alpha\.app\.net)/(.*)=ism', $profile_url, $matches)) {
  82                         return self::APPNET;
  83                 }
  84
  85                 if (preg_match('=https?://(plus\.google\.com)/(.*)=ism', $profile_url, $matches)) {
  86                         return self::GPLUS;
  87                 }
  88
  89                 if (preg_match('=https?://(.*)/profile/(.*)=ism', $profile_url, $matches)) {
  90                         return self::DFRN;
  91                 }
  92
  93                 if (preg_match('=https?://(.*)/u/(.*)=ism', $profile_url, $matches)) {
  94                         return self::DIASPORA;
  95                 }
  96
  97                 if (preg_match('=https?://(.*)/channel/(.*)=ism', $profile_url, $matches)) {
  98                         // RedMatrix/Hubzilla is identified as Diaspora - friendica can't connect directly to it
  99                         return self::DIASPORA;
 100                 }
 101
 102                 if (preg_match('=https?://(.*)/user/(.*)=ism', $profile_url, $matches)) {
 103                         $statusnet_host = $matches[1];
 104                         $statusnet_user = $matches[2];
 105                         $UserData = Network::fetchUrl('http://' . $statusnet_host . '/api/users/show.json?user_id=' . $statusnet_user);
 106                         $user = json_decode($UserData);
 107                         if ($user) {
 108                                 $matches[2] = $user->screen_name;
 109                                 return self::STATUSNET;
 110                         }
 111                 }
 112
 113                 // Mastodon, Pleroma
 114                 if (preg_match('=https?://(.+?)/users/(.+)=ism', $profile_url, $matches)
 115                         || preg_match('=https?://(.+?)/@(.+)=ism', $profile_url, $matches)
 116                 ) {
 117                         return self::ACTIVITYPUB;
 118                 }
 119
 120                 // pumpio (http://host.name/user)
 121                 if (preg_match('=https?://([\.\w]+)/([\.\w]+)$=ism', $profile_url, $matches)) {
 122                         return self::PUMPIO;
 123                 }
 124
 125                 return self::PHANTOM;
 126         }
 127
 128         /**
 129          * Returns a formatted mention from a profile URL and a display name
 130          *
 131          * @param string $profile_url
 132          * @param string $display_name
 133          * @return string
 134          */
 135         public static function formatMention($profile_url, $display_name)
 136         {
 137                 return $display_name . ' (' . self::getAddrFromProfileUrl($profile_url) . ')';
 138         }
 139 }