+
+/**
+ * @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;
+
+ $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
+ dbesc(normalise_link($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"])
+ );
+
+ $r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
+ dbesc(normalise_link($contact["url"])));
+
+ if ($r)
+ $gcontact_id = $r[0]["id"];
+ }
+
+ if ((count($r) > 1) AND ($gcontact_id > 0) AND ($contact["url"] != ""))
+ q("DELETE FROM `gcontact` WHERE `nurl` = '%s' AND `id` != %d",
+ dbesc(normalise_link($contact["url"])),
+ intval($gcontact_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;
+
+ $r = q("SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`,
+ `hide`, `nsfw`, `network`, `alias`, `notify`, `server_url`, `connect`, `updated`, `url`
+ FROM `gcontact` WHERE `id` = %d LIMIT 1",
+ intval($gcontact_id));
+
+ // Get all field names
+ $fields = array();
+ foreach ($r[0] AS $field => $data)
+ $fields[$field] = $data;
+
+ unset($fields["url"]);
+ unset($fields["updated"]);
+
+ // Bugfix: We had an error in the storing of keywords which lead to the "0"
+ // This value is still transmitted via poco.
+ if ($contact["keywords"] == "0")
+ unset($contact["keywords"]);
+
+ if ($r[0]["keywords"] == "0")
+ $r[0]["keywords"] = "";
+
+ // assign all unassigned fields from the database entry
+ foreach ($fields AS $field => $data)
+ if (!isset($contact[$field]) OR ($contact[$field] == ""))
+ $contact[$field] = $r[0][$field];
+
+ if ($contact["network"] == NETWORK_STATUSNET)
+ $contact["network"] = NETWORK_OSTATUS;
+
+ if (!isset($contact["updated"]))
+ $contact["updated"] = datetime_convert();
+
+ if ($contact["server_url"] == "") {
+ $server_url = $contact["url"];
+
+ $server_url = matching_url($server_url, $contact["alias"]);
+ if ($server_url != "")
+ $contact["server_url"] = $server_url;
+
+ $server_url = matching_url($server_url, $contact["photo"]);
+ if ($server_url != "")
+ $contact["server_url"] = $server_url;
+
+ $server_url = matching_url($server_url, $contact["notify"]);
+ if ($server_url != "")
+ $contact["server_url"] = $server_url;
+ } else
+ $contact["server_url"] = normalise_link($contact["server_url"]);
+
+ if (($contact["addr"] == "") AND ($contact["server_url"] != "") AND ($contact["nick"] != "")) {
+ $hostname = str_replace("http://", "", $contact["server_url"]);
+ $contact["addr"] = $contact["nick"]."@".$hostname;
+ }
+
+ // Check if any field changed
+ $update = false;
+ unset($fields["generation"]);
+
+ if ((($contact["generation"] > 0) AND ($contact["generation"] <= $r[0]["generation"])) OR ($r[0]["generation"] == 0)) {
+ foreach ($fields AS $field => $data)
+ if ($contact[$field] != $r[0][$field]) {
+ logger("Difference for contact ".$contact["url"]." in field '".$field."'. New value: '".$contact[$field]."', old value '".$r[0][$field]."'", LOGGER_DEBUG);
+ $update = true;
+ }
+
+ if ($contact["generation"] < $r[0]["generation"]) {
+ logger("Difference for contact ".$contact["url"]." in field 'generation'. new value: '".$contact["generation"]."', old value '".$r[0]["generation"]."'", LOGGER_DEBUG);
+ $update = true;
+ }
+ }
+
+ if ($update) {
+ logger("Update gcontact for ".$contact["url"]." Callstack: ".App::callstack(), LOGGER_DEBUG);
+
+ q("UPDATE `gcontact` SET `photo` = '%s', `name` = '%s', `nick` = '%s', `addr` = '%s', `network` = '%s',
+ `birthday` = '%s', `gender` = '%s', `keywords` = '%s', `hide` = %d, `nsfw` = %d,
+ `alias` = '%s', `notify` = '%s', `url` = '%s',
+ `location` = '%s', `about` = '%s', `generation` = %d, `updated` = '%s',
+ `server_url` = '%s', `connect` = '%s'
+ WHERE `nurl` = '%s' AND (`generation` = 0 OR `generation` >= %d)",
+ dbesc($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($contact["generation"]), dbesc($contact["updated"]),
+ dbesc($contact["server_url"]), dbesc($contact["connect"]),
+ dbesc(normalise_link($contact["url"])), intval($contact["generation"]));
+
+
+ // Now update the contact entry with the user id "0" as well.
+ // This is used for the shadow copies of public items.
+ $r = q("SELECT `id` FROM `contact` WHERE `nurl` = '%s' AND `uid` = 0 ORDER BY `id` LIMIT 1",
+ dbesc(normalise_link($contact["url"])));
+
+ if ($r) {
+ logger("Update shadow contact ".$r[0]["id"], LOGGER_DEBUG);
+
+ update_contact_avatar($contact["photo"], 0, $r[0]["id"]);
+
+ q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `addr` = '%s',
+ `network` = '%s', `bd` = '%s', `gender` = '%s',
+ `keywords` = '%s', `alias` = '%s', `url` = '%s',
+ `location` = '%s', `about` = '%s'
+ WHERE `id` = %d",
+ dbesc($contact["name"]), dbesc($contact["nick"]), dbesc($contact["addr"]),
+ dbesc($contact["network"]), dbesc($contact["birthday"]), dbesc($contact["gender"]),
+ dbesc($contact["keywords"]), dbesc($contact["alias"]), dbesc($contact["url"]),
+ dbesc($contact["location"]), dbesc($contact["about"]), intval($r[0]["id"]));
+ }
+ }
+
+ 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 ($data["network"] == NETWORK_PHANTOM)
+ return;
+
+ update_gcontact($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 = $statistics->instance_address;
+ }
+
+ if (is_object($statistics->users))
+ 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"]));
+ }
+}