+
+function poco_discover_federation() {
+ $last = get_config('poco','last_federation_discovery');
+
+ if($last) {
+ $next = $last + (24 * 60 * 60);
+ if($next > time())
+ return;
+ }
+
+ // Discover Friendica, Hubzilla and Diaspora servers
+ $serverdata = fetch_url("http://the-federation.info/pods.json");
+
+ if ($serverdata) {
+ $servers = json_decode($serverdata);
+
+ foreach($servers->pods AS $server)
+ poco_check_server("https://".$server->host);
+ }
+
+ // Discover GNU Social Servers
+ if (!get_config('system','ostatus_disabled')) {
+ $serverdata = "http://gstools.org/api/get_open_instances/";
+
+ $result = z_fetch_url($serverdata);
+ if ($result["success"]) {
+ $servers = json_decode($result["body"]);
+
+ foreach($servers->data AS $server)
+ poco_check_server($server->instance_address);
+ }
+ }
+
+ set_config('poco','last_federation_discovery', time());
+}
+
+function poco_discover($complete = false) {
+
+ // Update the server list
+ poco_discover_federation();
+
+ $no_of_queries = 5;
+
+ $requery_days = intval(get_config("system", "poco_requery_days"));
+
+ if ($requery_days == 0)
+ $requery_days = 7;
+
+ $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
+
+ $r = q("SELECT `poco`, `nurl`, `url`, `network` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `poco` != '' AND `last_poco_query` < '%s' ORDER BY RAND()", dbesc($last_update));
+ if ($r)
+ foreach ($r AS $server) {
+
+ if (!poco_check_server($server["url"], $server["network"])) {
+ // The server is not reachable? Okay, then we will try it later
+ q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
+ continue;
+ }
+
+ // Fetch all users from the other server
+ $url = $server["poco"]."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
+
+ logger("Fetch all users from the server ".$server["nurl"], LOGGER_DEBUG);
+
+ $retdata = z_fetch_url($url);
+ if ($retdata["success"]) {
+ $data = json_decode($retdata["body"]);
+
+ poco_discover_server($data, 2);
+
+ if (get_config('system','poco_discovery') > 1) {
+
+ $timeframe = get_config('system','poco_discovery_since');
+ if ($timeframe == 0)
+ $timeframe = 30;
+
+ $updatedSince = date("Y-m-d H:i:s", time() - $timeframe * 86400);
+
+ // Fetch all global contacts from the other server (Not working with Redmatrix and Friendica versions before 3.3)
+ $url = $server["poco"]."/@global?updatedSince=".$updatedSince."&fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
+
+ $success = false;
+
+ $retdata = z_fetch_url($url);
+ if ($retdata["success"]) {
+ logger("Fetch all global contacts from the server ".$server["nurl"], LOGGER_DEBUG);
+ $success = poco_discover_server(json_decode($retdata["body"]));
+ }
+
+ if (!$success AND (get_config('system','poco_discovery') > 2)) {
+ logger("Fetch contacts from users of the server ".$server["nurl"], LOGGER_DEBUG);
+ poco_discover_server_users($data, $server);
+ }
+ }
+
+ q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
+ if (!$complete AND (--$no_of_queries == 0))
+ break;
+ } else {
+ // If the server hadn't replied correctly, then force a sanity check
+ poco_check_server($server["url"], $server["network"], true);
+
+ // If we couldn't reach the server, we will try it some time later
+ q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
+ }
+ }
+}
+
+function poco_discover_server_users($data, $server) {
+
+ if (!isset($data->entry))
+ return;
+
+ foreach ($data->entry AS $entry) {
+ $username = "";
+ if (isset($entry->urls)) {
+ foreach($entry->urls as $url)
+ if($url->type == 'profile') {
+ $profile_url = $url->value;
+ $urlparts = parse_url($profile_url);
+ $username = end(explode("/", $urlparts["path"]));
+ }
+ }
+ if ($username != "") {
+ logger("Fetch contacts for the user ".$username." from the server ".$server["nurl"], LOGGER_DEBUG);
+
+ // Fetch all contacts from a given user from the other server
+ $url = $server["poco"]."/".$username."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
+
+ $retdata = z_fetch_url($url);
+ if ($retdata["success"])
+ poco_discover_server(json_decode($retdata["body"]), 3);
+ }
+ }
+}
+
+function poco_discover_server($data, $default_generation = 0) {
+
+ if (!isset($data->entry) OR !count($data->entry))
+ return false;
+
+ $success = false;
+
+ foreach ($data->entry AS $entry) {
+ $profile_url = '';
+ $profile_photo = '';
+ $connect_url = '';
+ $name = '';
+ $network = '';
+ $updated = '0000-00-00 00:00:00';
+ $location = '';
+ $about = '';
+ $keywords = '';
+ $gender = '';
+ $generation = $default_generation;
+
+ $name = $entry->displayName;
+
+ if(isset($entry->urls)) {
+ foreach($entry->urls as $url) {
+ if($url->type == 'profile') {
+ $profile_url = $url->value;
+ continue;
+ }
+ if($url->type == 'webfinger') {
+ $connect_url = str_replace('acct:' , '', $url->value);
+ continue;
+ }
+ }
+ }
+
+ if(isset($entry->photos)) {
+ foreach($entry->photos as $photo) {
+ if($photo->type == 'profile') {
+ $profile_photo = $photo->value;
+ continue;
+ }
+ }
+ }
+
+ if(isset($entry->updated))
+ $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
+
+ if(isset($entry->network))
+ $network = $entry->network;
+
+ if(isset($entry->currentLocation))
+ $location = $entry->currentLocation;
+
+ if(isset($entry->aboutMe))
+ $about = html2bbcode($entry->aboutMe);
+
+ if(isset($entry->gender))
+ $gender = $entry->gender;
+
+ if(isset($entry->generation) AND ($entry->generation > 0))
+ $generation = ++$entry->generation;
+
+ if(isset($entry->tags))
+ foreach($entry->tags as $tag)
+ $keywords = implode(", ", $tag);
+
+ if ($generation > 0) {
+ $success = true;
+
+ logger("Store profile ".$profile_url, LOGGER_DEBUG);
+ poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, 0, 0, 0);
+ logger("Done for profile ".$profile_url, LOGGER_DEBUG);
+ }
+ }
+ return $success;
+}
+
+/**
+ * @brief Fetch the gcontact id, add an entry if not existed
+ *
+ * @param arr $contact contact array
+ * @return bool|int Returns false if not found, integer if contact was found
+ */
+function get_gcontact_id($contact) {
+
+ $gcontact_id = 0;
+
+ if ($contact["network"] == NETWORK_STATUSNET)
+ $contact["network"] = NETWORK_OSTATUS;
+
+ $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
+ dbesc(normalise_link($contact["url"])));
+
+ if ($r)
+ $gcontact_id = $r[0]["id"];
+ else {
+ q("INSERT INTO `gcontact` (`name`, `nick`, `addr` , `network`, `url`, `nurl`, `photo`, `created`, `updated`, `location`, `about`, `generation`)
+ VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d)",
+ dbesc($contact["name"]),
+ dbesc($contact["nick"]),
+ dbesc($contact["addr"]),
+ dbesc($contact["network"]),
+ dbesc($contact["url"]),
+ dbesc(normalise_link($contact["url"])),
+ dbesc($contact["photo"]),
+ dbesc(datetime_convert()),
+ dbesc(datetime_convert()),
+ dbesc($contact["location"]),
+ dbesc($contact["about"]),
+ intval($contact["generation"])
+ );
+
+ $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
+ dbesc(normalise_link($contact["url"])));
+
+ if ($r)
+ $gcontact_id = $r[0]["id"];
+ }
+
+ return $gcontact_id;
+}
+
+/**
+ * @brief Updates the gcontact table from a given array
+ *
+ * @param arr $contact contact array
+ * @return bool|int Returns false if not found, integer if contact was found
+ */
+function update_gcontact($contact) {
+
+ /// @todo update contact table as well
+
+ $gcontact_id = get_gcontact_id($contact);
+
+ if (!$gcontact_id)
+ return false;
+
+ $r = q("SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`, `hide`, `nsfw`, `network`, `alias`, `notify`, `url`
+ FROM `gcontact` WHERE `id` = %d LIMIT 1",
+ intval($gcontact_id));
+
+ if ($contact["generation"] == 0)
+ $contact["generation"] = $r[0]["generation"];
+
+ if ($contact["photo"] == "")
+ $contact["photo"] = $r[0]["photo"];
+
+ if ($contact["name"] == "")
+ $contact["name"] = $r[0]["name"];
+
+ if ($contact["nick"] == "")
+ $contact["nick"] = $r[0]["nick"];
+
+ if ($contact["addr"] == "")
+ $contact["addr"] = $r[0]["addr"];
+
+ if ($contact["location"] =="")
+ $contact["location"] = $r[0]["location"];
+
+ if ($contact["about"] =="")
+ $contact["about"] = $r[0]["about"];
+
+ if ($contact["birthday"] =="")
+ $contact["birthday"] = $r[0]["birthday"];
+
+ if ($contact["gender"] =="")
+ $contact["gender"] = $r[0]["gender"];
+
+ if ($contact["keywords"] =="")
+ $contact["keywords"] = $r[0]["keywords"];
+
+ if (!isset($contact["hide"]))
+ $contact["hide"] = $r[0]["hide"];
+
+ if (!isset($contact["nsfw"]))
+ $contact["nsfw"] = $r[0]["nsfw"];
+
+ if ($contact["network"] =="")
+ $contact["network"] = $r[0]["network"];
+
+ if ($contact["alias"] =="")
+ $contact["alias"] = $r[0]["alias"];
+
+ if ($contact["url"] =="")
+ $contact["url"] = $r[0]["url"];
+
+ if ($contact["notify"] =="")
+ $contact["notify"] = $r[0]["notify"];
+
+ if ($contact["network"] == NETWORK_STATUSNET)
+ $contact["network"] = NETWORK_OSTATUS;
+
+ if (($contact["photo"] != $r[0]["photo"]) OR ($contact["name"] != $r[0]["name"]) OR ($contact["nick"] != $r[0]["nick"]) OR ($contact["addr"] != $r[0]["addr"]) OR
+ ($contact["birthday"] != $r[0]["birthday"]) OR ($contact["gender"] != $r[0]["gender"]) OR ($contact["keywords"] != $r[0]["keywords"]) OR
+ ($contact["hide"] != $r[0]["hide"]) OR ($contact["nsfw"] != $r[0]["nsfw"]) OR ($contact["network"] != $r[0]["network"]) OR
+ ($contact["alias"] != $r[0]["alias"]) OR ($contact["notify"] != $r[0]["notify"]) OR ($contact["url"] != $r[0]["url"]) OR
+ ($contact["location"] != $r[0]["location"]) OR ($contact["about"] != $r[0]["about"]) OR ($contact["generation"] < $r[0]["generation"])) {
+
+ q("UPDATE `gcontact` SET `photo` = '%s', `name` = '%s', `nick` = '%s', `addr` = '%s', `network` = '%s',
+ `birthday` = '%s', `gender` = '%s', `keywords` = %d, `hide` = %d, `nsfw` = %d,
+ `alias` = '%s', `notify` = '%s', `url` = '%s',
+ `location` = '%s', `about` = '%s', `generation` = %d, `updated` = '%s'
+ WHERE `nurl` = '%s' AND (`generation` = 0 OR `generation` >= %d)",
+ dbesc($contact["photo"]), dbesc($contact["name"]), dbesc($contact["nick"]),
+ dbesc($contact["addr"]), dbesc($contact["network"]), dbesc($contact["birthday"]),
+ dbesc($contact["gender"]), dbesc($contact["keywords"]), intval($contact["hide"]),
+ intval($contact["nsfw"]), dbesc($contact["alias"]), dbesc($contact["notify"]),
+ dbesc($contact["url"]), dbesc($contact["location"]), dbesc($contact["about"]),
+ intval($contact["generation"]), dbesc(datetime_convert()),
+ dbesc(normalise_link($contact["url"])), intval($contact["generation"]));
+ }
+
+ return $gcontact_id;
+}
+
+/**
+ * @brief Updates the gcontact entry from probe
+ *
+ * @param str $url profile link
+ */
+function update_gcontact_from_probe($url) {
+ $data = probe_url($url);
+
+ if ($data["network"] != NETWORK_PHANTOM)
+ update_gcontact($data);
+}
+
+/**
+ * @brief Fetches users of given GNU Social server
+ *
+ * If the "Statistics" plugin is enabled (See http://gstools.org/ for details) we query user data with this.
+ *
+ * @param str $server Server address
+ */
+function gs_fetch_users($server) {
+
+ logger("Fetching users from GNU Social server ".$server, LOGGER_DEBUG);
+
+ $a = get_app();
+
+ $url = $server."/main/statistics";
+
+ $result = z_fetch_url($url);
+ if (!$result["success"])
+ return false;
+
+ $statistics = json_decode($result["body"]);
+
+ if (is_object($statistics->config)) {
+ if ($statistics->config->instance_with_ssl)
+ $server = "https://";
+ else
+ $server = "http://";
+
+ $server .= $statistics->config->instance_address;
+
+ $hostname = $statistics->config->instance_address;
+ } else {
+ if ($statistics->instance_with_ssl)
+ $server = "https://";
+ else
+ $server = "http://";
+
+ $server .= $statistics->instance_address;
+
+ $hostname = $statistics->instance_address;
+ }
+
+ foreach ($statistics->users AS $nick => $user) {
+ $profile_url = $server."/".$user->nickname;
+
+ $contact = array("url" => $profile_url,
+ "name" => $user->fullname,
+ "addr" => $user->nickname."@".$hostname,
+ "nick" => $user->nickname,
+ "about" => $user->bio,
+ "network" => NETWORK_OSTATUS,
+ "photo" => $a->get_baseurl()."/images/person-175.jpg");
+ get_gcontact_id($contact);
+ }
+}
+
+/**
+ * @brief Asking GNU Social server on a regular base for their user data
+ *
+ */
+function gs_discover() {
+
+ $requery_days = intval(get_config("system", "poco_requery_days"));
+
+ $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
+
+ $r = q("SELECT `nurl`, `url` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `network` = '%s' AND `last_poco_query` < '%s' ORDER BY RAND() LIMIT 5",
+ dbesc(NETWORK_OSTATUS), dbesc($last_update));
+
+ if (!$r)
+ return;
+
+ foreach ($r AS $server) {
+ gs_fetch_users($server["url"]);
+ q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
+ }
+}
+?>