src/Worker/DiscoverPoCo.php

   1 <?php
   2 /**
   3  * @file src/Worker/DiscoverPoCo.php
   4  */
   5 namespace Friendica\Worker;
   6
   7 use Friendica\Core\Cache;
   8 use Friendica\Core\Config;
   9 use Friendica\Core\Worker;
  10 use Friendica\Database\DBM;
  11 use Friendica\Model\GContact;
  12 use Friendica\Network\Probe;
  13 use Friendica\Protocol\PortableContact;
  14 use Friendica\Util\Network;
  15
  16 require_once 'include/datetime.php';
  17
  18 class DiscoverPoCo {
  19         /// @todo Clean up this mess of a parameter hell and split it in several classes
  20         public static function execute($command = '', $param1 = '', $param2 = '', $param3 = '', $param4 = '')
  21         {
  22                 /*
  23                 This function can be called in these ways:
  24                 - dirsearch <search pattern>: Searches for "search pattern" in the directory. "search pattern" is url encoded.
  25                 - checkcontact: Updates gcontact entries
  26                 - suggestions: Discover other servers for their contacts.
  27                 - server <poco url>: Searches for the poco server list. "poco url" is base64 encoded.
  28                 - update_server: Frequently check the first 250 servers for vitality.
  29                 - update_server_directory: Discover the given server id for their contacts
  30                 - PortableContact::load: Load POCO data from a given POCO address
  31                 - check_profile: Update remote profile data
  32                 */
  33
  34                 if ($command == "dirsearch") {
  35                         $search = urldecode($param1);
  36                         $mode = 1;
  37                 } elseif ($command == "checkcontact") {
  38                         $mode = 2;
  39                 } elseif ($command == "suggestions") {
  40                         $mode = 3;
  41                 } elseif ($command == "server") {
  42                         $mode = 4;
  43                 } elseif ($command == "update_server") {
  44                         $mode = 5;
  45                 } elseif ($command == "update_server_directory") {
  46                         $mode = 6;
  47                 } elseif ($command == "load") {
  48                         $mode = 7;
  49                 } elseif ($command == "check_profile") {
  50                         $mode = 8;
  51                 } elseif ($command == '') {
  52                         $search = "";
  53                         $mode = 0;
  54                 } else {
  55                         logger("Unknown or missing parameter ".$command."\n");
  56                         return;
  57                 }
  58
  59                 logger('start '.$search);
  60
  61                 if ($mode == 8) {
  62                         if ($param1 != "") {
  63                                 PortableContact::lastUpdated($param1, true);
  64                         }
  65                 } elseif ($mode == 7) {
  66                         if (!empty($param4)) {
  67                                 $url = $param4;
  68                         } else {
  69                                 $url = '';
  70                         }
  71                         PortableContact::load(intval($param1), intval($param2), intval($param3), $url);
  72                 } elseif ($mode == 6) {
  73                         PortableContact::discoverSingleServer(intval($param1));
  74                 } elseif ($mode == 5) {
  75                         self::updateServer();
  76                 } elseif ($mode == 4) {
  77                         $server_url = $param1;
  78                         if ($server_url == "") {
  79                                 return;
  80                         }
  81                         $server_url = filter_var($server_url, FILTER_SANITIZE_URL);
  82                         if (substr(normalise_link($server_url), 0, 7) != "http://") {
  83                                 return;
  84                         }
  85                         $result = "Checking server ".$server_url." - ";
  86                         $ret = PortableContact::checkServer($server_url);
  87                         if ($ret) {
  88                                 $result .= "success";
  89                         } else {
  90                                 $result .= "failed";
  91                         }
  92                         logger($result, LOGGER_DEBUG);
  93                 } elseif ($mode == 3) {
  94                         GContact::updateSuggestions();
  95                 } elseif (($mode == 2) && Config::get('system', 'poco_completion')) {
  96                         self::discoverUsers();
  97                 } elseif (($mode == 1) && ($search != "") && Config::get('system', 'poco_local_search')) {
  98                         self::discoverDirectory($search);
  99                         self::gsSearchUser($search);
 100                 } elseif (($mode == 0) && ($search == "") && (Config::get('system', 'poco_discovery') > 0)) {
 101                         // Query Friendica and Hubzilla servers for their users
 102                         PortableContact::discover();
 103
 104                         // Query GNU Social servers for their users ("statistics" addon has to be enabled on the GS server)
 105                         if (!Config::get('system', 'ostatus_disabled')) {
 106                                 GContact::discoverGsUsers();
 107                         }
 108                 }
 109
 110                 logger('end '.$search);
 111
 112                 return;
 113         }
 114
 115         /**
 116          * @brief Updates the first 250 servers
 117          *
 118          */
 119         private static function updateServer() {
 120                 $r = q("SELECT `url`, `created`, `last_failure`, `last_contact` FROM `gserver` ORDER BY rand()");
 121
 122                 if (!DBM::is_result($r)) {
 123                         return;
 124                 }
 125
 126                 $updated = 0;
 127
 128                 foreach ($r AS $server) {
 129                         if (!PortableContact::updateNeeded($server["created"], "", $server["last_failure"], $server["last_contact"])) {
 130                                 continue;
 131                         }
 132                         logger('Update server status for server '.$server["url"], LOGGER_DEBUG);
 133
 134                         Worker::add(PRIORITY_LOW, "DiscoverPoCo", "server", $server["url"]);
 135
 136                         if (++$updated > 250) {
 137                                 return;
 138                         }
 139                 }
 140         }
 141
 142         private static function discoverUsers() {
 143                 logger("Discover users", LOGGER_DEBUG);
 144
 145                 $starttime = time();
 146
 147                 $users = q("SELECT `url`, `created`, `updated`, `last_failure`, `last_contact`, `server_url`, `network` FROM `gcontact`
 148                                 WHERE `last_contact` < UTC_TIMESTAMP - INTERVAL 1 MONTH AND
 149                                         `last_failure` < UTC_TIMESTAMP - INTERVAL 1 MONTH AND
 150                                         `network` IN ('%s', '%s', '%s', '%s', '') ORDER BY rand()",
 151                                 dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA),
 152                                 dbesc(NETWORK_OSTATUS), dbesc(NETWORK_FEED));
 153
 154                 if (!$users) {
 155                         return;
 156                 }
 157                 $checked = 0;
 158
 159                 foreach ($users AS $user) {
 160
 161                         $urlparts = parse_url($user["url"]);
 162                         if (!isset($urlparts["scheme"])) {
 163                                 q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 164                                         dbesc(NETWORK_PHANTOM), dbesc(normalise_link($user["url"])));
 165                                 continue;
 166                          }
 167
 168                         if (in_array($urlparts["host"], ["www.facebook.com", "facebook.com", "twitter.com",
 169                                                                 "identi.ca", "alpha.app.net"])) {
 170                                 $networks = ["www.facebook.com" => NETWORK_FACEBOOK,
 171                                                 "facebook.com" => NETWORK_FACEBOOK,
 172                                                 "twitter.com" => NETWORK_TWITTER,
 173                                                 "identi.ca" => NETWORK_PUMPIO,
 174                                                 "alpha.app.net" => NETWORK_APPNET];
 175
 176                                 q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 177                                         dbesc($networks[$urlparts["host"]]), dbesc(normalise_link($user["url"])));
 178                                 continue;
 179                         }
 180
 181                         $server_url = PortableContact::detectServer($user["url"]);
 182                         $force_update = false;
 183
 184                         if ($user["server_url"] != "") {
 185
 186                                 $force_update = (normalise_link($user["server_url"]) != normalise_link($server_url));
 187
 188                                 $server_url = $user["server_url"];
 189                         }
 190
 191                         if ((($server_url == "") && ($user["network"] == NETWORK_FEED)) || $force_update || PortableContact::checkServer($server_url, $user["network"])) {
 192                                 logger('Check profile '.$user["url"]);
 193                                 Worker::add(PRIORITY_LOW, "DiscoverPoCo", "check_profile", $user["url"]);
 194
 195                                 if (++$checked > 100) {
 196                                         return;
 197                                 }
 198                         } else {
 199                                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 200                                         dbesc(datetime_convert()), dbesc(normalise_link($user["url"])));
 201                         }
 202
 203                         // Quit the loop after 3 minutes
 204                         if (time() > ($starttime + 180)) {
 205                                 return;
 206                         }
 207                 }
 208         }
 209
 210         private static function discoverDirectory($search) {
 211
 212                 $data = Cache::get("dirsearch:".$search);
 213                 if (!is_null($data)) {
 214                         // Only search for the same item every 24 hours
 215                         if (time() < $data + (60 * 60 * 24)) {
 216                                 logger("Already searched for ".$search." in the last 24 hours", LOGGER_DEBUG);
 217                                 return;
 218                         }
 219                 }
 220
 221                 $x = Network::fetchUrl(get_server()."/lsearch?p=1&n=500&search=".urlencode($search));
 222                 $j = json_decode($x);
 223
 224                 if (count($j->results)) {
 225                         foreach ($j->results as $jj) {
 226                                 // Check if the contact already exists
 227                                 $exists = q("SELECT `id`, `last_contact`, `last_failure`, `updated` FROM `gcontact` WHERE `nurl` = '%s'", normalise_link($jj->url));
 228                                 if (DBM::is_result($exists)) {
 229                                         logger("Profile ".$jj->url." already exists (".$search.")", LOGGER_DEBUG);
 230
 231                                         if (($exists[0]["last_contact"] < $exists[0]["last_failure"]) &&
 232                                                 ($exists[0]["updated"] < $exists[0]["last_failure"])) {
 233                                                 continue;
 234                                         }
 235                                         // Update the contact
 236                                         PortableContact::lastUpdated($jj->url);
 237                                         continue;
 238                                 }
 239
 240                                 $server_url = PortableContact::detectServer($jj->url);
 241                                 if ($server_url != '') {
 242                                         if (!PortableContact::checkServer($server_url)) {
 243                                                 logger("Friendica server ".$server_url." doesn't answer.", LOGGER_DEBUG);
 244                                                 continue;
 245                                         }
 246                                         logger("Friendica server ".$server_url." seems to be okay.", LOGGER_DEBUG);
 247                                 }
 248
 249                                 $data = Probe::uri($jj->url);
 250                                 if ($data["network"] == NETWORK_DFRN) {
 251                                         logger("Profile ".$jj->url." is reachable (".$search.")", LOGGER_DEBUG);
 252                                         logger("Add profile ".$jj->url." to local directory (".$search.")", LOGGER_DEBUG);
 253
 254                                         if ($jj->tags != "") {
 255                                                 $data["keywords"] = $jj->tags;
 256                                         }
 257
 258                                         $data["server_url"] = $data["baseurl"];
 259
 260                                         GContact::update($data);
 261                                 } else {
 262                                         logger("Profile ".$jj->url." is not responding or no Friendica contact - but network ".$data["network"], LOGGER_DEBUG);
 263                                 }
 264                         }
 265                 }
 266                 Cache::set("dirsearch:".$search, time(), CACHE_DAY);
 267         }
 268
 269         /**
 270          * @brief Search for GNU Social user with gstools.org
 271          *
 272          * @param string $search User name
 273          */
 274         private static function gsSearchUser($search) {
 275
 276                 // Currently disabled, since the service isn't available anymore.
 277                 // It is not removed since I hope that there will be a successor.
 278                 return false;
 279
 280                 $a = get_app();
 281
 282                 $url = "http://gstools.org/api/users_search/".urlencode($search);
 283
 284                 $result = Network::curl($url);
 285                 if (!$result["success"]) {
 286                         return false;
 287                 }
 288
 289                 $contacts = json_decode($result["body"]);
 290
 291                 if ($contacts->status == 'ERROR') {
 292                         return false;
 293                 }
 294
 295                 /// @TODO AS is considered as a notation for constants (as they usually being written all upper-case)
 296                 /// @TODO find all those and convert to all lower-case which is a keyword then
 297                 foreach ($contacts->data AS $user) {
 298                         $contact = Probe::uri($user->site_address."/".$user->name);
 299                         if ($contact["network"] != NETWORK_PHANTOM) {
 300                                 $contact["about"] = $user->description;
 301                                 GContact::update($contact);
 302                         }
 303                 }
 304         }
 305 }