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 <mrpetovan@gmail.com>
  13  */
  14 class Protocol
  15 {
  16         // Native support
  17         const ACTIVITYPUB = 'apub';    // ActivityPub
  18         const DFRN        = 'dfrn';    // Friendica, Mistpark, other DFRN implementations
  19         const DIASPORA    = 'dspr';    // Diaspora
  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, Pleroma, Mastodon, 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 APPNET    = 'apdn';    // app.net - Dead protocol
  28         const DIASPORA2 = 'dspc';    // Diaspora connector
  29         const FACEBOOK  = 'face';    // Facebook API
  30         const GPLUS     = 'goog';    // Google+
  31         const LINKEDIN  = 'lnkd';    // LinkedIn
  32         const PUMPIO    = 'pump';    // pump.io
  33         const STATUSNET = 'stac';    // Statusnet connector
  34         const TWITTER   = 'twit';    // Twitter
  35
  36         // Currently unsupported
  37         const ICALENDAR = 'ical';    // iCalendar
  38         const MYSPACE   = 'mysp';    // MySpace
  39         const NEWS      = 'nntp';    // Network News Transfer Protocol
  40         const PNUT      = 'pnut';    // pnut.io
  41         const XMPP      = 'xmpp';    // XMPP
  42         const ZOT       = 'zot!';    // Zot!
  43
  44         const PHANTOM   = 'unkn';    // Place holder
  45
  46         /**
  47          * Returns the address string for the provided profile URL
  48          *
  49          * @param string $profile_url
  50          * @return string
  51          * @throws Exception
  52          */
  53         public static function getAddrFromProfileUrl($profile_url)
  54         {
  55                 $network = self::matchByProfileUrl($profile_url, $matches);
  56
  57                 if ($network === self::PHANTOM) {
  58                         return "";
  59                 }
  60
  61                 $addr = $matches[2] . '@' . $matches[1];
  62
  63                 return $addr;
  64         }
  65
  66         /**
  67          * Guesses the network from a profile URL
  68          *
  69          * @param string $profile_url
  70          * @param array  $matches     preg_match return array: [0] => Full match [1] => hostname [2] => username
  71          * @return type
  72          */
  73         public static function matchByProfileUrl($profile_url, &$matches = [])
  74         {
  75                 if (preg_match('=https?://(twitter\.com)/(.*)=ism', $profile_url, $matches)) {
  76                         return self::TWITTER;
  77                 }
  78
  79                 if (preg_match('=https?://(alpha\.app\.net)/(.*)=ism', $profile_url, $matches)) {
  80                         return self::APPNET;
  81                 }
  82
  83                 if (preg_match('=https?://(plus\.google\.com)/(.*)=ism', $profile_url, $matches)) {
  84                         return self::GPLUS;
  85                 }
  86
  87                 if (preg_match('=https?://(.*)/profile/(.*)=ism', $profile_url, $matches)) {
  88                         return self::DFRN;
  89                 }
  90
  91                 if (preg_match('=https?://(.*)/u/(.*)=ism', $profile_url, $matches)) {
  92                         return self::DIASPORA;
  93                 }
  94
  95                 if (preg_match('=https?://(.*)/channel/(.*)=ism', $profile_url, $matches)) {
  96                         // RedMatrix/Hubzilla is identified as Diaspora - friendica can't connect directly to it
  97                         return self::DIASPORA;
  98                 }
  99
 100                 if (preg_match('=https?://(.*)/user/(.*)=ism', $profile_url, $matches)) {
 101                         $statusnet_host = $matches[1];
 102                         $statusnet_user = $matches[2];
 103                         $UserData = Network::fetchUrl('http://' . $statusnet_host . '/api/users/show.json?user_id=' . $statusnet_user);
 104                         $user = json_decode($UserData);
 105                         if ($user) {
 106                                 $matches[2] = $user->screen_name;
 107                                 return self::STATUSNET;
 108                         }
 109                 }
 110
 111                 // pumpio (http://host.name/user)
 112                 if (preg_match('=https?://([\.\w]+)/([\.\w]+)$=ism', $profile_url, $matches)) {
 113                         return self::PUMPIO;
 114                 }
 115
 116                 return self::PHANTOM;
 117         }
 118
 119         /**
 120          * Returns a formatted mention from a profile URL and a display name
 121          *
 122          * @param string $profile_url
 123          * @param string $display_name
 124          * @return string
 125          */
 126         public static function formatMention($profile_url, $display_name)
 127         {
 128                 return $display_name . ' (' . self::getAddrFromProfileUrl($profile_url) . ')';
 129         }
 130 }