include/discover_poco.php

   1 <?php
   2
   3 use \Friendica\Core\Config;
   4
   5 require_once("boot.php");
   6 require_once("include/socgraph.php");
   7
   8 function discover_poco_run(&$argv, &$argc){
   9         global $a, $db;
  10
  11         if(is_null($a)) {
  12                 $a = new App;
  13         }
  14
  15         if(is_null($db)) {
  16             @include(".htconfig.php");
  17         require_once("include/dba.php");
  18             $db = new dba($db_host, $db_user, $db_pass, $db_data);
  19         unset($db_host, $db_user, $db_pass, $db_data);
  20         };
  21
  22         require_once('include/session.php');
  23         require_once('include/datetime.php');
  24
  25         Config::load();
  26
  27         // Don't check this stuff if the function is called by the poller
  28         if (App::callstack() != "poller_run")
  29                 if ($a->maxload_reached())
  30                         return;
  31
  32         /*
  33         This function can be called in these ways:
  34         - dirsearch <search pattern>: Searches for "search pattern" in the directory. "search pattern" is url encoded.
  35         - checkcontact: Updates gcontact entries
  36         - suggestions: Discover other servers for their contacts.
  37         - server <poco url>: Searches for the poco server list. "poco url" is base64 encoded.
  38         */
  39
  40         if(($argc > 2) && ($argv[1] == "dirsearch")) {
  41                 $search = urldecode($argv[2]);
  42                 $mode = 1;
  43         } elseif(($argc == 2) && ($argv[1] == "checkcontact")) {
  44                 $mode = 2;
  45         } elseif(($argc == 2) && ($argv[1] == "suggestions")) {
  46                 $mode = 3;
  47         } elseif(($argc == 3) && ($argv[1] == "server")) {
  48                 $mode = 4;
  49         } elseif ($argc == 1) {
  50                 $search = "";
  51                 $mode = 0;
  52         } else {
  53                 die("Unknown or missing parameter ".$argv[1]."\n");
  54         }
  55
  56         // Don't check this stuff if the function is called by the poller
  57         if (App::callstack() != "poller_run")
  58                 if (App::is_already_running('discover_poco'.$mode.urlencode($search), 'include/discover_poco.php', 1140))
  59                         return;
  60
  61         $a->set_baseurl(get_config('system','url'));
  62
  63         load_hooks();
  64
  65         logger('start '.$search);
  66
  67         if ($mode == 4) {
  68                 $server_url = base64_decode($argv[2]);
  69                 if ($server_url == "") {
  70                         return;
  71                 }
  72                 $server_url = filter_var($server_url, FILTER_SANITIZE_URL);
  73                 if (substr(normalise_link($server_url), 0, 7) != "http://") {
  74                         return;
  75                 }
  76                 $result = "Checking server ".$server_url." - ";
  77                 $ret = poco_check_server($server_url);
  78                 if ($ret) {
  79                         $result .= "success";
  80                 } else {
  81                         $result .= "failed";
  82                 }
  83                 logger($result, LOGGER_DEBUG);
  84         } elseif ($mode == 3) {
  85                 update_suggestions();
  86         } elseif (($mode == 2) AND get_config('system','poco_completion')) {
  87                 discover_users();
  88         } elseif (($mode == 1) AND ($search != "") and get_config('system','poco_local_search')) {
  89                 discover_directory($search);
  90                 gs_search_user($search);
  91         } elseif (($mode == 0) AND ($search == "") and (get_config('system','poco_discovery') > 0)) {
  92                 // Query Friendica and Hubzilla servers for their users
  93                 poco_discover();
  94
  95                 // Query GNU Social servers for their users ("statistics" addon has to be enabled on the GS server)
  96                 if (!get_config('system','ostatus_disabled'))
  97                         gs_discover();
  98         }
  99
 100         logger('end '.$search);
 101
 102         return;
 103 }
 104
 105 function discover_users() {
 106         logger("Discover users", LOGGER_DEBUG);
 107
 108         $users = q("SELECT `url`, `created`, `updated`, `last_failure`, `last_contact`, `server_url` FROM `gcontact`
 109                         WHERE `last_contact` < UTC_TIMESTAMP - INTERVAL 1 MONTH AND
 110                                 `last_failure` < UTC_TIMESTAMP - INTERVAL 1 MONTH AND
 111                                 `network` IN ('%s', '%s', '%s', '%s', '') ORDER BY rand()",
 112                         dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA),
 113                         dbesc(NETWORK_OSTATUS), dbesc(NETWORK_FEED));
 114
 115         if (!$users)
 116                 return;
 117
 118         $checked = 0;
 119
 120         foreach ($users AS $user) {
 121
 122                 $urlparts = parse_url($user["url"]);
 123                 if (!isset($urlparts["scheme"])) {
 124                         q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 125                                 dbesc(NETWORK_PHANTOM), dbesc(normalise_link($user["url"])));
 126                         continue;
 127                  }
 128
 129                 if (in_array($urlparts["host"], array("www.facebook.com", "facebook.com", "twitter.com",
 130                                                         "identi.ca", "alpha.app.net"))) {
 131                         $networks = array("www.facebook.com" => NETWORK_FACEBOOK,
 132                                         "facebook.com" => NETWORK_FACEBOOK,
 133                                         "twitter.com" => NETWORK_TWITTER,
 134                                         "identi.ca" => NETWORK_PUMPIO,
 135                                         "alpha.app.net" => NETWORK_APPNET);
 136
 137                         q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 138                                 dbesc($networks[$urlparts["host"]]), dbesc(normalise_link($user["url"])));
 139                         continue;
 140                 }
 141
 142                 if ($user["server_url"] != "")
 143                         $server_url = $user["server_url"];
 144                 else
 145                         $server_url = poco_detect_server($user["url"]);
 146
 147                 if (($server_url == "") OR poco_check_server($server_url, $gcontacts[0]["network"])) {
 148                         logger('Check user '.$user["url"]);
 149                         poco_last_updated($user["url"], true);
 150
 151                         if (++$checked > 100)
 152                                 return;
 153                 } else
 154                         q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 155                                 dbesc(datetime_convert()), dbesc(normalise_link($user["url"])));
 156         }
 157 }
 158
 159 function discover_directory($search) {
 160
 161         $data = Cache::get("dirsearch:".$search);
 162         if (!is_null($data)){
 163                 // Only search for the same item every 24 hours
 164                 if (time() < $data + (60 * 60 * 24)) {
 165                         logger("Already searched for ".$search." in the last 24 hours", LOGGER_DEBUG);
 166                         return;
 167                 }
 168         }
 169
 170         $x = fetch_url(get_server()."/lsearch?p=1&n=500&search=".urlencode($search));
 171         $j = json_decode($x);
 172
 173         if(count($j->results))
 174                 foreach($j->results as $jj) {
 175                         // Check if the contact already exists
 176                         $exists = q("SELECT `id`, `last_contact`, `last_failure`, `updated` FROM `gcontact` WHERE `nurl` = '%s'", normalise_link($jj->url));
 177                         if ($exists) {
 178                                 logger("Profile ".$jj->url." already exists (".$search.")", LOGGER_DEBUG);
 179
 180                                 if (($exists[0]["last_contact"] < $exists[0]["last_failure"]) AND
 181                                         ($exists[0]["updated"] < $exists[0]["last_failure"]))
 182                                         continue;
 183
 184                                 // Update the contact
 185                                 poco_last_updated($jj->url);
 186                                 continue;
 187                         }
 188
 189                         // Harcoded paths aren't so good. But in this case it is okay.
 190                         // First: We only will get Friendica contacts (which always are using this url schema)
 191                         // Second: There will be no further problems if we are doing a mistake
 192                         $server_url = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$1$2", $jj->url);
 193                         if ($server_url != $jj->url)
 194                                 if (!poco_check_server($server_url)) {
 195                                         logger("Friendica server ".$server_url." doesn't answer.", LOGGER_DEBUG);
 196                                         continue;
 197                                 }
 198                                         logger("Friendica server ".$server_url." seems to be okay.", LOGGER_DEBUG);
 199
 200                         logger("Check if profile ".$jj->url." is reachable (".$search.")", LOGGER_DEBUG);
 201                         $data = probe_url($jj->url);
 202                         if ($data["network"] == NETWORK_DFRN) {
 203                                 logger("Add profile ".$jj->url." to local directory (".$search.")", LOGGER_DEBUG);
 204                                 poco_check($data["url"], $data["name"], $data["network"], $data["photo"], "", "", "", $jj->tags, $data["addr"], "", 0);
 205                         }
 206                 }
 207         Cache::set("dirsearch:".$search, time(), CACHE_DAY);
 208 }
 209
 210 /**
 211  * @brief Search for GNU Social user with gstools.org
 212  *
 213  * @param str $search User name
 214  */
 215 function gs_search_user($search) {
 216
 217         // Currently disabled, since the service isn't available anymore.
 218         // It is not removed since I hope that there will be a successor.
 219         return false;
 220
 221         $a = get_app();
 222
 223         $url = "http://gstools.org/api/users_search/".urlencode($search);
 224
 225         $result = z_fetch_url($url);
 226         if (!$result["success"])
 227                 return false;
 228
 229         $contacts = json_decode($result["body"]);
 230
 231         if ($contacts->status == 'ERROR')
 232                 return false;
 233
 234         foreach($contacts->data AS $user) {
 235                 $contact = probe_url($user->site_address."/".$user->name);
 236                 if ($contact["network"] != NETWORK_PHANTOM) {
 237                         $contact["about"] = $user->description;
 238                         update_gcontact($contact);
 239                 }
 240         }
 241 }
 242
 243
 244 if (array_search(__file__,get_included_files())===0){
 245   discover_poco_run($_SERVER["argv"],$_SERVER["argc"]);
 246   killme();
 247 }