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         const FEDERATED = [self::DFRN, self::DIASPORA, self::OSTATUS, self::ACTIVITYPUB];
  27
  28         // Supported through a connector
  29         const DIASPORA2 = 'dspc';    // Diaspora connector
  30         const LINKEDIN  = 'lnkd';    // LinkedIn
  31         const PUMPIO    = 'pump';    // pump.io
  32         const STATUSNET = 'stac';    // Statusnet connector
  33         const TWITTER   = 'twit';    // Twitter
  34
  35         // Dead protocols
  36         const APPNET    = 'apdn';    // app.net - Dead protocol
  37         const FACEBOOK  = 'face';    // Facebook API - Not working anymore, API is closed
  38         const GPLUS     = 'goog';    // Google+ - Dead in 2019
  39
  40         // Currently unsupported
  41         const ICALENDAR = 'ical';    // iCalendar
  42         const MYSPACE   = 'mysp';    // MySpace
  43         const NEWS      = 'nntp';    // Network News Transfer Protocol
  44         const PNUT      = 'pnut';    // pnut.io
  45         const XMPP      = 'xmpp';    // XMPP
  46         const ZOT       = 'zot!';    // Zot!
  47
  48         const PHANTOM   = 'unkn';    // Place holder
  49
  50         /**
  51          * Returns the address string for the provided profile URL
  52          *
  53          * @param string $profile_url
  54          * @return string
  55          * @throws \Exception
  56          */
  57         public static function getAddrFromProfileUrl($profile_url)
  58         {
  59                 $network = self::matchByProfileUrl($profile_url, $matches);
  60
  61                 if ($network === self::PHANTOM) {
  62                         return "";
  63                 }
  64
  65                 $addr = $matches[2] . '@' . $matches[1];
  66
  67                 return $addr;
  68         }
  69
  70         /**
  71          * Guesses the network from a profile URL
  72          *
  73          * @param string $profile_url
  74          * @param array  $matches preg_match return array: [0] => Full match [1] => hostname [2] => username
  75          * @return string
  76          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  77          */
  78         public static function matchByProfileUrl($profile_url, &$matches = [])
  79         {
  80                 if (preg_match('=https?://(twitter\.com)/(.*)=ism', $profile_url, $matches)) {
  81                         return self::TWITTER;
  82                 }
  83
  84                 if (preg_match('=https?://(alpha\.app\.net)/(.*)=ism', $profile_url, $matches)) {
  85                         return self::APPNET;
  86                 }
  87
  88                 if (preg_match('=https?://(plus\.google\.com)/(.*)=ism', $profile_url, $matches)) {
  89                         return self::GPLUS;
  90                 }
  91
  92                 if (preg_match('=https?://(.*)/profile/(.*)=ism', $profile_url, $matches)) {
  93                         return self::DFRN;
  94                 }
  95
  96                 if (preg_match('=https?://(.*)/u/(.*)=ism', $profile_url, $matches)) {
  97                         return self::DIASPORA;
  98                 }
  99
 100                 if (preg_match('=https?://(.*)/channel/(.*)=ism', $profile_url, $matches)) {
 101                         // RedMatrix/Hubzilla is identified as Diaspora - friendica can't connect directly to it
 102                         return self::DIASPORA;
 103                 }
 104
 105                 if (preg_match('=https?://(.*)/user/(.*)=ism', $profile_url, $matches)) {
 106                         $statusnet_host = $matches[1];
 107                         $statusnet_user = $matches[2];
 108                         $UserData = Network::fetchUrl('http://' . $statusnet_host . '/api/users/show.json?user_id=' . $statusnet_user);
 109                         $user = json_decode($UserData);
 110                         if ($user) {
 111                                 $matches[2] = $user->screen_name;
 112                                 return self::STATUSNET;
 113                         }
 114                 }
 115
 116                 // Mastodon, Pleroma
 117                 if (preg_match('=https?://(.+?)/users/(.+)=ism', $profile_url, $matches)
 118                         || preg_match('=https?://(.+?)/@(.+)=ism', $profile_url, $matches)
 119                 ) {
 120                         return self::ACTIVITYPUB;
 121                 }
 122
 123                 // pumpio (http://host.name/user)
 124                 if (preg_match('=https?://([\.\w]+)/([\.\w]+)$=ism', $profile_url, $matches)) {
 125                         return self::PUMPIO;
 126                 }
 127
 128                 return self::PHANTOM;
 129         }
 130
 131         /**
 132          * Returns a formatted mention from a profile URL and a display name
 133          *
 134          * @param string $profile_url
 135          * @param string $display_name
 136          * @return string
 137          * @throws \Exception
 138          */
 139         public static function formatMention($profile_url, $display_name)
 140         {
 141                 return $display_name . ' (' . self::getAddrFromProfileUrl($profile_url) . ')';
 142         }
 143 }